Patent Publication Number: US-2022216654-A1

Title: Connection terminal and connector

Description:
TECHNICAL FIELD 
     The present disclosure relates to a connection terminal and a connector. 
     BACKGROUND 
     Conventionally, a vehicle such as a plug-in hybrid vehicle or electric vehicle includes a charging connector for charging an installed power storage device (see, for example, Patent Document 1). The vehicle of this type includes various harnesses and various connectors having terminal connecting portions for connecting the harnesses as members for electrically connecting the charging connector and the power storage device. 
     PRIOR ART DOCUMENT 
     Patent Document 
     Patent Document 1: JP 2018-026273 A 
     SUMMARY OF THE INVENTION 
     Problems to be Solved 
     In the above connector, a large current is required for a larger capacity of the installed power storage device, the shortening of a charging time and the like. However, if the large current is used, a temperature of the connector is increased by heat generation in the terminal connecting portions of the connector caused by energization. Thus, it is desired to suppress a temperature increase during energization in connectors including terminal connecting portions such as a charging connector. 
     The present disclosure aims to provide a connection terminal and a connector capable of suppressing a temperature increase during energization. 
     Means to Solve the Problem 
     The present disclosure is directed to a connection terminal with a terminal made of metal, and a heat storage body held in or on the terminal, wherein the terminal includes a terminal connecting portion to be electrically connected to a mating terminal, a wire connecting portion to be electrically connected to a wire, and a holding portion integrally formed to the terminal connecting portion and the wire connecting portion, and the heat storage body is held in or on the holding portion. 
     Effect of the Invention 
     According to the connection terminal of the present disclosure, an effect of being capable of suppressing a temperature increase during energization is achieved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic perspective view showing a connector of one embodiment. 
         FIG. 2  is a schematic side view showing the connector of the one embodiment. 
         FIG. 3  is a schematic section (section along  3 - 3  in  FIG. 2 ) showing the connector of the one embodiment. 
         FIG. 4  is a schematic exploded perspective view showing a vehicle-side terminal of the one embodiment. 
         FIG. 5  is a schematic section showing the vehicle-side terminal of the one embodiment. 
         FIG. 6  is a schematic perspective view showing a vehicle-side terminal of a modification. 
         FIG. 7  is a schematic section showing the vehicle-side terminal of the modification. 
         FIG. 8  is a schematic perspective view showing a vehicle-side terminal of a modification. 
         FIG. 9  is a schematic section showing the vehicle-side terminal of the modification. 
         FIG. 10  is a schematic perspective view showing a vehicle-side terminal of a modification. 
         FIG. 11  is schematic section showing the vehicle-side terminal of the modification. 
         FIG. 12  is a schematic perspective view showing a vehicle-side terminal of a modification. 
         FIG. 13  is a schematic section showing the vehicle-side terminal of the modification. 
     
    
    
     DETAILED DESCRIPTION TO EXECUTE THE INVENTION 
     Description of Embodiments of Present Disclosure 
     First, embodiments of the present disclosure are listed and described. 
     [1] The connection terminal of the present disclosure includes a terminal made of metal, and a heat storage body held in or on the terminal, wherein the terminal includes a terminal connecting portion to be electrically connected to a mating terminal, a wire connecting portion to be electrically connected to a wire, and a holding portion integrally formed to the terminal connecting portion and the wire connecting portion, and the heat storage body is held in or on the holding portion. 
     According to this configuration, the terminal generates heat due to a current flowing during use. At this time, the heat generated in the terminal can be absorbed by the heat storage body held in or on the holding portion of the terminal. In this way, a sudden temperature increase of the terminal can be suppressed. 
     [2] Preferably, the holding portion is provided between the terminal connecting portion and the wire connecting portion. According to this configuration, the heat storage body is provided between the terminal connecting portion and the wire connecting portion. Thus, the heat storage body can be provided near both the terminal connecting portion and the wire connecting portion. Here, in the terminal, heat is easily generated in the terminal connecting portion connected to the mating terminal and the wire connecting portion connected to the wire. Since the heat storage body can be provided near both the terminal connecting portion and the wire connecting portion, heat generated in the terminal connecting portion and the wire connecting portion can be efficiently absorbed by the heat storage body. In this way, a sudden temperature increase of the terminal can be suppressed. 
     [3] Preferably, the heat storage body is held inside the holding portion. According to this configuration, the heat storage body is arranged inside the holding portion. In this way, the heat storage body can be held in the holding portion without covering an outer surface of the holding portion. Thus, even if the heat storage body is provided, it can be suppressed that heat dissipation from the outer surface of the holding portion is blocked by the heat storage body. For example, if the connection terminal is held in a connector housing, the outer surface of the holding portion can be brought into contact with the connector housing. Thus, the heat generated in the terminal can be transferred to the connector housing through the outer surface of the holding portion of the terminal. In this way, the heat generated in the terminal can be efficiently released to the atmosphere from the outer surface of the connector housing. Therefore, the heat generated in the terminal can be efficiently dissipated. 
     [4] The heat storage body includes a case held in or on the holding portion, and a heat storage material accommodated inside the case. According to this configuration, the heat generated in the terminal can be absorbed by the heat storage material accommodated inside the case. In this way, a sudden temperature increase of the terminal can be suppressed. Further, since the heat storage material can be accommodated in the case separate from the terminal, the heat storage body can be handled separately from the terminal. In this way, the handleability of the heat storage body can be improved. 
     [5] Preferably, the case is made of a thermally expandable material. According to this configuration, the case made of the thermally expandable material expands, for example, due to heat transferred from the terminal. In this way, the case can be suitably held in close contact with the holding portion. As a result, heat transferability between the terminal and the heat storage body can be enhanced. Thus, the heat generated in the terminal can be efficiently absorbed by the heat storage material of the heat storage body and a temperature increase of the terminal can be more effectively suppressed. 
     [6] Preferably, the holding portion is formed into a tubular shape, and the heat storage body is provided in an internal space of the holding portion. According to this configuration, the heat storage body can be held in the holding portion by inserting the heat storage body into the internal space of the tubular holding portion. 
     [7] Preferably, the holding portion includes a projecting piece projecting in a direction intersecting an arrangement direction of the terminal connecting portion and the wire connecting portion, and the holding portion holds the heat storage body by crimping the projecting piece to an outer surface of the heat storage body. 
     According to this configuration, the heat storage body can be held in or on the holding portion by crimping the projecting piece to the outer surface of the heat storage body. In this way, the projecting piece can be suitably held in close contact with the outer surface of the heat storage body. As a result, heat transferability between the terminal and the heat storage body can be enhanced. Thus, the heat generated in the terminal can be efficiently absorbed by the heat storage body and a temperature increase of the terminal can be more effectively suppressed. 
     [8] Preferably, the holding portion includes a bottom wall extending between the terminal connecting portion and the wire connecting portion and a side wall standing on the bottom wall, and the heat storage body includes an engaging portion to be engaged with the side wall. 
     According to this configuration, the heat storage body can be held on the holding portion by engaging the engaging portion of the heat storage body with the side wall of the holding portion. In this way, the heat storage body can be easily held on the holding portion. 
     A connector of the present disclosure preferably includes the connection terminal of any one of [1] to [8] described above, and a connector housing for holding the connection terminal. According to this configuration, the amount of heat transferred from the terminal to the connector housing can be reduced by absorbing the heat generated in the terminal by the heat storage body. Thus, a sudden temperature increase of the connector housing can be suppressed. 
     Details of Embodiment of Present Disclosure 
     A specific example of a connector of the present disclosure is described below with reference to the drawings. In each figure, some of components may be shown in an exaggerated or simplified manner for the convenience of description. A dimensional ratio of each part may be different in each figure. Note that the present invention is not limited to these illustrations and is intended to be represented by claims and include all changes in the scope of claims and in the meaning and scope of equivalents. 
     Schematic Configuration of Vehicle-Side Connector  10   
     A vehicle-side connector  10  shown in  FIG. 1  is for charging a power storage device (not shown) installed in a vehicle V (see  FIG. 2 ) such as an electric vehicle or plug-in hybrid vehicle. 
     As shown in  FIG. 2 , the vehicle-side connector  10  is fixed to the vehicle V by fastening members (not shown) such as bolts. The vehicle-side connector  10  is connected to the power storage device (not shown) via wires  70 . 
     As shown in  FIGS. 2 and 3 , a charger-side connector  80  is connected as a mating connector to the vehicle-side connector  10 . In an example shown in  FIGS. 2 and 3 , the charger-side connector  80  is connected to the vehicle-side connector  10  from a left side. The left side in  FIGS. 2 and 3  is the outside of the vehicle, i.e. the outside of a vehicle interior. Further, a lateral direction in  FIGS. 2 and 3  is an inserting/withdrawing direction of the charger-side connector  80 . In the following description, the lateral direction in  FIGS. 2 and 3  is referred to as a front-rear direction, a vertical direction in  FIG. 2  is referred to as a vertical direction and a vertical direction in  FIG. 3  is referred to as a lateral direction. Further, in the following description, a left side of  FIG. 2  is referred to as a front side, a right side of  FIG. 2  is referred to as a rear side, an upper side of  FIG. 2  is referred to as an upper side, a lower side of  FIG. 2  is referred to as a lower side, an upper side of  FIG. 3  is referred to as a right side, and a lower side of  FIG. 3  is referred to as a left side. 
     Specific Configuration of Vehicle-Side Connector  10   
     As shown in  FIG. 3 , the vehicle-side connector  10  includes a connector housing  20 , one or more (two in this embodiment) vehicle-side terminals  50  and heat storage bodies  60 . The connector housing  20  includes a housing body  30  and a retainer  40 . 
     Configuration of Housing Body  30   
     The housing body  30  is made of insulating synthetic resin. The housing body  30  includes a fitting portion  31 , a flange portion  32 , a tube portion  33 , one or more (two in this embodiment) terminal accommodating portions  34 , and one or more (two in this embodiment) terminal holding portions  35 . 
     The fitting portion  31  is, for example, formed into a tubular shape. The charger-side connector  80  is inserted into the fitting portion  31 . Here, the charger-side connector  80  includes a connector housing  81  and charger-side terminals  82  held in the connector housing  81 . A tip part (here, a rear end part) of the connector housing  81  is fit into the fitting portion  31 . The fitting portion  31  is, for example, in the form of a bottomed tube. The fitting portion  31  of this embodiment is in the form of a bottomed hollow cylinder with an open front end part. The fitting portion  31  includes, for example, a hollow cylindrical receptacle  31 A and a back wall portion  31 B closing the rear end of the receptacle  31 A. 
     As shown in  FIG. 1 , the flange portion  32  is formed to project radially outwardly of the receptacle  31 A from the outer peripheral surface of the receptacle  31 A. The flange portion  32  is, for example, formed to project radially outward over the entire periphery in a circumferential direction of the receptacle  31 A. The flange portion  32  of this embodiment is in the form of a substantially rectangular plate. The flange portion  32  includes a plurality of mounting holes  32 X penetrating through the flange portion  32  in a plate thickness direction (here, front-rear direction). The fastening members (not shown) such as bolts are inserted into the respective mounting holes  32 X. The vehicle-side connector  10  is fixed to the vehicle V (see  FIG. 2 ) by these fastening members. 
     The tube portion  33  extends rearward from the flange portion  32 . The tube portion  33  of this embodiment is formed into a substantially hollow cylindrical shape. As shown in  FIG. 2 , the tube portion  33  of this embodiment is provided at a position shifted downward with respect to the fitting portion  31 . 
     As shown in  FIG. 3 , each terminal accommodating portion  34  extends forward from the back wall portion  31 B. Each terminal accommodating portion  34  is, for example, formed into a tubular shape. Each terminal accommodating portion  34  of this embodiment is formed into a hollow cylindrical shape. The two terminal accommodating portions  34  are, for example, provided side by side in the lateral direction of the vehicle-side connector  10 . 
     Each terminal holding portion  35  extends rearward from the back wall portion  31 B. Each terminal holding portion  35  is, for example, formed into a tubular shape. Each terminal holding portion  35  of this embodiment is formed into a hollow cylindrical shape having an inner diameter larger than an inner diameter of each terminal accommodating portion  34 . The respective terminal holding portions  35  are, for example, provided on the same axes as the respective terminal accommodating portions  34 . Internal spaces of the respective terminal holding portions  35  communicate, for example, with internal spaces of the respective terminal accommodating portions  34 . The vehicle-side terminals  50  are inserted into these terminal accommodating portions  34  and terminal holding portions  35 . That is, the respective terminal accommodating portions  34  and the respective terminal holding portions  35  constitute terminal accommodation tubes for accommodating the vehicle-side terminals  50 . 
     Configuration of Vehicle-Side Terminal  50   
     As shown in  FIGS. 4 and 5 , each vehicle-side terminal  50  includes, for example, a terminal connecting portion  51  to be electrically connected to the charger-side terminal  82  (see  FIG. 3 ) as a mating terminal, and a wire connecting portion  54  to be electrically connected to the wire  70  (see  FIG. 3 ). Each vehicle-side terminal  50  includes a locking portion  55  and a holding portion  56  provided between the terminal connecting portion  51  and the wire connecting portion  54 . Each vehicle-side terminal  50  is, for example, a single component in which the terminal connecting portion  51 , the locking portion  55 , the holding portion  56  and the wire connecting portion  54  are integrally formed while being connected in the front-rear direction. A metal material such as copper, copper alloy, aluminum, aluminum alloy or stainless steel can be, for example, used as a material of each vehicle-side terminal  50 . Surface processing such as silver plating, tin plating or aluminum plating may be applied to each vehicle-side terminal  50  according to the type of the constituent metal and the use environment of the vehicle-side terminal  50 . Each vehicle-side terminal  50  can be formed, for example, by cutting a metal bar material excellent in conductivity. Further, each vehicle-side terminal  50  can be formed, for example, by press-working a metal plate excellent in conductivity. 
     Configuration of Terminal Connecting Portion  51   
     As shown in  FIG. 4 , the terminal connecting portion  51  is, for example, provided on a front end part of the vehicle-side terminal  50 . The terminal connecting portion  51  is, for example, a female terminal. The terminal connecting portion  51  includes a base portion  52  and a tubular connecting portion  53  provided in front of the base portion  52 . In the terminal connecting portion  51 , the base portion  52  and the tubular connecting portion  53  are integrally formed while being connected in the front-rear direction. 
     The base portion  52  is, for example, in the form of a column having a solid internal structure. The base portion  52  is, for example, in the form of a solid cylinder shorter in the front-rear direction than the tubular connecting portion  53 . As shown in  FIG. 3 , the base portion  52  is, for example, accommodated in the terminal accommodating portion  34 . An outer diameter of the base portion  52  is, for example, set to be slightly smaller than the inner diameter of the terminal accommodating portion  34 . With the base portion  52  accommodated in the terminal accommodating portion  34 , the outer peripheral surface of the base portion  52  is, for example, at least partially in contact with the inner peripheral surface of the terminal accommodating portion  34 . The outer peripheral surface of the base portion  52  and the inner peripheral surface of the terminal accommodating portion  34  may be in surface contact, line contact or point contact with each other. 
     The tubular connecting portion  53  is, for example, formed into a substantially hollow cylindrical shape. The charger-side terminal  82  of the charger-side connector  80  is inserted into the tubular connecting portion  53 . The charger-side terminal  82  of this embodiment is a male terminal. As shown in  FIG. 4 , the tubular connecting portion  53  includes, for example, a plurality of resilient pieces  53 A. The plurality of resilient pieces  53 A are, for example, provided at predetermined intervals along a circumferential direction of the base portion  52 . In other words, the tubular connecting portion  53  is provided with slits  53 X formed by being cut rearward from the front end opening edge of the tubular connecting portion  53  and arranged at predetermined intervals. As shown in  FIG. 3 , an inner diameter of the tubular connecting portion  53  is set to be slightly smaller than an outer diameter of the charger-side terminal  82 . If the charger-side terminal  82  is inserted into the tubular connecting portion  53 , the plurality of resilient pieces  53 A contact the outer peripheral surface of the charger-side terminal  82 . In this way, the tubular connecting portion  53  (terminal connecting portion  51 ) and the charger-side terminal  82  are electrically connected. An outer diameter of the tubular connecting portion  53  is, for example, set to be smaller than the inner diameter of the terminal accommodating portion  34 . The base portion  52  and the tubular connecting portion  53  (i.e. terminal connecting portion  51 ) described above are accommodated in the terminal accommodating portion  34 . 
     Configuration of Wire Connecting Portion  54   
     The wire connecting portion  54  is, for example, provided on a rear end part of the vehicle-side terminal  50 . The wire connecting portion  54  is electrically connected to an end part of the wire  70 . Here, the wire  70  is a coated wire including a core  71  made of a metal material excellent in conductivity and an insulation coating  72  for covering the outer periphery of the core  71 . In the end part of the wire  70 , the insulation coating  72  is stripped over a predetermined length range from the end of the wire  70  to expose the core  71 . The wire connecting portion  54  is connected to an end part of the core  71  exposed from the insulation coating  72 . The wire connecting portion  54  is connected to the core  71 , for example, by crimping, ultrasonic welding or the like. The wire connecting portion  54  of this embodiment is in the form of an open barrel and connected to the core  71  by crimping. In this way, the wire connecting portion  54  and the core  71  are electrically connected. 
     Configuration of Locking Portion  55   
     As shown in  FIG. 4 , the locking portion  55  is, for example, provided between the terminal connecting portion  51  and the wire connecting portion  54 . The locking portion  55  is, for example, provided behind the terminal connecting portion  51  (specifically, base portion  52 ). The locking portion  55  is, for example, formed to project further radially outwardly of the base portion  52  than the outer peripheral surface of the base portion  52 . The locking portion  55  is, for example, formed to project radially outward over the entire periphery in the circumferential direction of the base portion  52 . As shown in  FIG. 5 , the locking portion  55  is, for example, formed into a tubular shape having a hollow internal structure. The locking portion  55  of this embodiment is formed into a hollow cylindrical shape. The locking portion  55  includes, for example, an internal space. As shown in  FIG. 3 , the locking portion  55  is, for example, held in the terminal holding portion  35 . An outer diameter of the locking portion  55  is, for example, set to be larger than the inner diameter of the terminal accommodating portion  34  and slightly smaller than the inner diameter of the terminal holding portion  35 . The locking portion  55  is, for example, locked to the rear surface of the back wall portion  31 B. With the locking portion  55  held in the terminal holding portion  35 , the outer peripheral surface of the locking portion  55  is, for example, at least partially in contact with the inner peripheral surface of the terminal holding portion  35 . The outer peripheral surface of the locking portion  55  and the inner peripheral surface of the terminal holding portion  35  may be in surface contact, line contact or point contact with each other. 
     Configuration of Holding Portion  56   
     As shown in  FIG. 5 , the holding portion  56  is, for example, provided between the terminal connecting portion  51  and the wire connecting portion  54 . The holding portion  56  is, for example, provided behind the locking portion  55 . The holding portion  56  of this embodiment is provided between the locking portion  55  and the wire connecting portion  54 . The holding portion  56  is, for example, formed into a hollow cylindrical shape. An internal space of the holding portion  56  communicates, for example, with that of the locking portion  55 . An inner diameter of the holding portion  56  is, for example, equal to that of the locking portion  55 . For example, the inner peripheral surface of the holding portion  56  is formed to be continuous and integral with the inner peripheral surface of the locking portion  55  without any step. An accommodation space  57  for accommodating the heat storage body  60  is constituted by these internal spaces of the holding portion  56  and the locking portion  55 . A bottom part of the accommodation space  57  is, for example, constituted by the rear surface of the base portion  52 . An outer diameter of the holding portion  56  is, for example, set to be smaller than that of the locking portion  55 . The outer diameter of the holding portion  56  is, for example, set about equal to that of the base portion  52 . As shown in  FIGS. 4  and  5 , the holding portion  56  and the terminal connecting portion  51  of the vehicle-side terminal  50  may be arranged in a row, e.g. coaxially or linearly. The terminal connecting portion  51 , the holding portion  56  and the wire connecting portion  54  of the vehicle-side terminal  50  may be arranged in a row, e.g. coaxially or linearly. 
     Configuration of Heat Storage Body  60   
     The heat storage body  60  is held in the holding portion  56  of the vehicle-side terminal  50 . That is, the heat storage body  60  is provided between the terminal connecting portion  51  and the wire connecting portion  54 . The heat storage body  60  of this embodiment is accommodated in the accommodation space  57  formed in the locking portion  55  and the holding portion  56  of the vehicle-side terminal  50 . The heat storage body  60  includes a case  61  and a heat storage material  65  accommodated in the case  61 . 
     Configuration of Case  61   
     The case  61  includes a case body  62  in the form of a bottomed tube formed to contact the inner peripheral surface of the accommodation space  57 , and a cover  63  for closing an opening of the case body  62 . A thermally expandable material or thermally conductive material can be used as materials of the case body  62  and the cover  63 . A rubber, a resin, a metal or the like can be, for example, used as the thermally expandable material. By constituting the case  61  of the thermally expandable material, the outer peripheral surface of the case  61  can be held in close contact with the inner peripheral surface of the accommodation space  57 , regardless of a temperature change. EPDM (ethylene propylene diene rubber), silicon rubber, fluororubber or the like can be, for example, used as the rubber. An epoxy-based resin, a polyethylene-based resin, a polyurethane-based resin or the like can be, for example, used as the resin. A copper-based or aluminum-based metal material can be used as the metal. The case body  62  and the cover  63  may be made of the same material or may be made of different materials. 
     The outer peripheral surface of the case body  62  is, for example, shaped to correspond to the inner peripheral surface of the accommodation space  57 . The case body  62  of this embodiment is in the form of a bottomed hollow cylinder. An outer diameter of the case body  62  is, for example, set to be slightly smaller than an inner diameter of the accommodation space  57 . The case body  62  includes an accommodating portion  64  for accommodating the heat storage material  65 . 
     The cover  63  is fixed to the case body  62  to close an opening of the case body  62 . The cover  63  is secured to the case body  62 , for example, by a method such as ultrasonic welding or laser welding. The cover  63  of this embodiment is in the form of a circular plate. 
     If the opening of the case body  62  is closed by the cover  63  with the heat storage material  65  accommodated in the accommodating portion  64  of the case body  62 , the heat storage material  65  is confined inside the case  61 . 
     Configuration of Heat Storage Member  65   
     The heat storage material  65  can temporarily store heat. A material utilizing latent heat during a phase change between a liquid and a solid can be used as the heat storage material  65 . Further, a material having a melting point in a used temperature range can be used as the heat storage material  65 . For example, paraffine, sodium sulfate tetrahydrate, sodium acetate trihydrate, vanadium dioxide or the like can be used as the material of the heat storage material  65 . 
     Holding Mode of Heat Storage Body  60   
     The case  61  having the heat storage material  65  accommodated inside, i.e. the heat storage body  60 , is inserted into the accommodation space  57  of the vehicle-side terminal  50 . That is, the heat storage body  60  of this embodiment is provided inside the vehicle-side terminal  50 . In other words, the heat storage body  60  of this embodiment is held in the vehicle-side terminal  50  without covering the outer surface of the vehicle-side terminal  50 . For example, the heat storage body  60  is inserted into the accommodation space  57  along the front-rear direction. 
     With the heat storage body  60  accommodated in the accommodation space  57 , the bottom wall of the case body  62  is at least partially in contact with a bottom part of the accommodation space  57  (i.e. rear surface of the base portion  52 ). With the heat storage body  60  accommodated in the accommodation space  57 , the outer peripheral surface of the case body  62  is at least partially in contact with the inner peripheral surface of the accommodation space  57 . The outer surface of the case body  62  and the inner surface of the accommodation space  57  may be in surface contact, line contact or point contact with each other. The heat storage material  65  accommodated inside the case  61  stores heat generated from the vehicle-side terminal  50 . 
     The case  61  is closed by the cover  63 . The leakage of the heat storage material  65  liquefied inside the case  61  can be suppressed by this cover  63 . For example, the cover  63  is so fixed to the case body  62  that the liquefied heat storage material  65  cannot flow out. 
     Note that an adhesive, thermal interface material (TIM) or the like may be interposed between the inner surface of the accommodation space  57  and the outer surface of the case  61 . An epoxy resin-based, polyurethane-based or acrylic resin-based adhesive can be, for example, used as the adhesive. A soft metal such as indium or silver, silicone gel or an organic resin binder containing a metal filler can be, for example, used as the thermal interface material. 
     The connection terminal is composed of the vehicle-side terminal  50  and the heat storage body  60  described above. 
     Configuration of Retainer  40   
     As shown in  FIG. 3 , the retainer  40  is mounted on the rear end of the tube portion  33  of the housing body  30 . The retainer  40  retains the vehicle-side terminals  50 . The retainer  40  is, for example, made of synthetic resin. A synthetic resin such as polyolefin, polyamide, polyester or ABS resin can be, for example, as a material of the retainer  40 . 
     The retainer  40  includes a base portion  41 , a peripheral wall  42 , terminal pressing portions  43 , wire holding portions  44  and a surrounding wall portion  45 . The base portion  41  is, for example, in the form of a circular plate. The peripheral wall  42  is, for example, formed to project forward from a peripheral edge part of the base portion  41 . The peripheral wall  42  is, for example, formed over the entire periphery in a circumferential direction of the peripheral edge part of the base portion  41 . The peripheral wall  42  is, for example, disposed outside the tube portion  33  of the housing body  30 . That is, the peripheral wall  42  is externally fit to the tube portion  33  of the housing body  30 . For example, engaging portions (not shown) to be engaged with each other are respectively formed on the outer peripheral surfaces of the peripheral wall  42  and the tube portion  33 . The retainer  40  is mounted on the rear end of the tube portion  33 , for example, by engaging the engaging portions of the peripheral wall  42  and the tube portion  33 . 
     The terminal pressing portion  43  is, for example, formed to project forward from the base portion  41 . The terminal pressing portion  43  is provided at a position corresponding to the terminal holding portion  35  of the housing body  30 . The terminal pressing portion  43  is, for example, formed into a tubular shape. The terminal pressing portion  43  of this embodiment is formed into a hollow cylindrical shape. The terminal pressing portion  43  is inserted between the inner surface of the terminal holding portion  35  and the outer surface of the vehicle-side terminal  50 . A tip part (here, a front end part) of the terminal pressing portion  43  comes into contact with the rear surface of the locking portion  55  of the vehicle-side terminal  50 . The vehicle-side terminal  50  can be prevented from coming out rearward by this retainer  40 . 
     The wire holding portion  44  is formed to project rearward from the base portion  41 . The wire holding portion  44  is provided at a position corresponding to the terminal pressing portion  43 . The wire holding portion  44  is, for example, provided on the same axis as the terminal pressing portion  43 . The wire holding portion  44  of this embodiment is formed into a hollow cylindrical shape. An outer diameter of the wire holding portion  44  is, for example, set equal to that of the terminal pressing portion  43 . An inner diameter of the wire holding portion  44  is, for example, set equal to that of the terminal pressing portion  43 . An internal space of the wire holding portion  44  and that of the terminal pressing portion  43  communicate with each other. The wire  70  is accommodated in the internal space of the wire holding portion  44 . 
     The surrounding wall portion  45  projects rearward from the base portion  41 . The surrounding wall portion  45  is, for example, formed to collectively surround a plurality of the wire holding portions  44 . The surrounding wall portion  45  of this embodiment is formed into a hollow cylindrical shape. 
     Functions 
     Next, functions of the vehicle-side connector  10  are described. 
     If the charger-side connector  80  shown in  FIG. 1  is connected to the vehicle-side connector  10 , a charging current is supplied from a charger outside the vehicle to the power storage device installed in the vehicle V through the charger-side connector  80  and the vehicle-side connector  10 . At this time, a large charging current is supplied from the charger outside the vehicle to the power storage device to shorten a charging time. At the start of supply of this charging current, heat is generated in contact parts of the charger-side terminals  82  and the vehicle-side terminals  50  (terminal connecting portions  51 ), the vehicle-side terminals  50 , contact parts of the wires  70  and the vehicle-side terminals  50  (wire connecting portions  54 ) and the like. Particularly, heat is easily generated in the contact parts of the charger-side terminals  82  and the vehicle-side terminals  50  and the contact parts of the wires  70  and the vehicle-side terminals  50  (wire connecting portions  54 ). The heat in the vehicle-side terminals  50  and the like suddenly increases at the start of the charging, and transitions at temperatures lower than a maximum temperature at the start of the charging. 
     At this time, in the vehicle-side connector  10  of this embodiment, the heat storage body  60  including the heat storage material  65  is accommodated in the vehicle-side terminal  50 . Specifically, the heat storage body  60  is held in the holding portion  56  between the terminal connecting portion  51  and the wire connecting portion  54  of the vehicle-side terminal  50 . The heat storage material  65  is for temporarily storing heat. The heat storage material  65  temporarily stores latent heat (heat of dissolution) by a phase change from a solid to a liquid caused by heat generated in the vehicle-side terminal  50  and the like. That is, the heat storage material  65  absorbs the heat generated in the vehicle-side terminal  50 . In this way, a sudden temperature increase of the vehicle-side terminal  50  can be suppressed. Further, by the absorption of heat by the heat storage material  65 , the amount of heat transferred from the vehicle-side terminal  50  to the wire  70 , the connector housing  20  and the like can be reduced. Thus, sudden temperature increases of the wire  70 , the connector housing  20  and the like can also be suppressed. By using the heat storage material  65 , maximum temperatures of the vehicle-side terminal  50  and the connector housing  20  at the start of the charging can be reduced to temperatures lower than maximum temperatures when the heat storage material  65  is not used. 
     When a predetermined time elapses from the start of the charging, the temperature of the vehicle-side terminal  50  transitions at the predetermined temperatures lower than the maximum temperature. Here, for example, a thickness of the vehicle-side terminal  50 , a thickness of the wire  70  and the like are so set that the vehicle-side terminal  50  and the wire  70  can withstand highest maximum temperatures rising even temporarily. In this embodiment, temperature increases of the vehicle-side terminal  50  and the wire  70  can be suppressed by using the heat storage body  60 . Thus, cross-sectional areas of the vehicle-side terminal  50  and the wire  70  can be set small. In this way, the vehicle-side terminal  50  can be formed to be thin and the wire  70  can be formed to be thin. Therefore, the vehicle-side terminal  50  and the wire  70  can be reduced in weight. 
     Here, the heat storage body  60  is held in a part of the vehicle-side terminal  50 . That is, the heat storage body  60  is directly in contact with the vehicle-side terminal  50 . Thus, heat generated in the vehicle-side terminal  50  is more easily absorbed by the heat storage material  65  of the heat storage body  60 . Therefore, temperature increases of the vehicle-side terminal  50  and the wire  70  can be effectively suppressed. Further, the heat storage body  60  is provided between the terminal connecting portion  51  and the wire connecting portion  54 . Thus, the heat storage body  60  is provided near both the terminal connecting portion  51  and the wire connecting portion  54 . In this way, the heat storage body  60  can be provided in a part where heat is easily generated at the start of the charging, i.e. in the contact part of the terminal connecting portion  51  and the charger-side terminal  82  and the contact part of the wire connecting portion  54  and the wire  70 . Therefore, heat generated in the part where heat is easily generated can be efficiently absorbed by the heat storage material  65  of the heat storage body  60 . As a result, temperature increases of the vehicle-side terminal  50  and the wire  70  can be effectively suppressed. 
     When the charging of the power storage device installed in the vehicle V is finished, the charger-side connector  80  is detached from the vehicle-side connector  10 . Then, the heat stored in the heat storage materials  65  of the vehicle-side connector  10  is gradually dissipated through the vehicle-side terminals  50  and the connector housing  20 . By this heat dissipation, the heat storage materials  65  are solidified. Unless the charging is performed, no current flows in the vehicle-side terminals  50 . Thus, the vehicle-side terminals  50  do not generate heat. The heat storage materials  65  in this case are solidified by dissipating heat. 
     Next, effects of this embodiment are described. 
     (1) The vehicle-side connector  10  includes the vehicle-side terminals  50  made of metal and the heat storage bodies  60  held in the vehicle-side terminals  50 . The vehicle-side terminal  50  includes the terminal connecting portion  51  to be electrically connected to the charger-side terminal  82 , the wire connecting portion  54  to be electrically connected to the wire  70  and the holding portion  56  integrally formed to the terminal connecting portion  51  and the wire connecting portion  54 . The heat storage body  60  is held in the holding portion  56 . 
     In this configuration, the vehicle-side terminal  50  generates heat by a current flowing during use. At this time, the heat generated in the vehicle-side terminal  50  can be absorbed by the heat storage body  60  held in the holding portion  56  of the vehicle-side terminal  50 . In this way, a sudden temperature increase of the vehicle-side terminal  50  can be suppressed. Thus, the cross-sectional area of the vehicle-side terminal  50  can be set small. In this way, the vehicle-side terminal  50  can be formed to be thin. Therefore, the vehicle-side terminal  50  can be reduced in weight. 
     (2) The holding portion  56  is provided between the terminal connecting portion  51  and the wire connecting portion  54 . According to this configuration, the heat storage body  60  held in the holding portion  56  is provided between the terminal connecting portion  51  and the wire connecting portion  54 . Thus, the heat storage body  60  can be provided near both the terminal connecting portion  51  and the wire connecting portion  54 . Here, in the terminal, heat is easily generated in the terminal connecting portion  51  connected to the charger-side terminal  82  and the wire connecting portion  54  connected to the wire  70 . Since the heat storage body  60  can be provided near both the terminal connecting portion  51  and the wire connecting portion  54 , heat generated in the terminal connecting portion  51  and the wire connecting portion  54  can be efficiently absorbed by the heat storage body  60 . In this way, a sudden temperature increase of the vehicle-side terminal  50  can be suppressed. 
     (3) The heat storage body  60  is held inside the holding portion  56 . According to this configuration, the heat storage body  60  is arranged inside the holding portion  56 . In this way, the heat storage body  60  can be held in the holding portion  56  without covering the outer surface of the holding portion  56 . Thus, even if the heat storage body  60  is provided, it can be suppressed that heat dissipation from the outer surface of the holding portion  56  is blocked by the heat storage body  60 . For example, the outer surface of the holding portion can be brought into contact with the connector housing when the vehicle-side terminal  50  is held in the connector housing. Thus, the heat generated in the terminal can be transferred to the connector housing through the outer surface of the holding portion of the terminal. In this way, the heat generated in the terminal can be efficiently released to the atmosphere from the outer surface of the connector housing. Therefore, the heat generated in the terminal can be efficiently dissipated. 
     (4) The heat storage body  60  includes the case  61  held in the holding portion  56  and the heat storage material  65  accommodated inside the case  61 . According to this configuration, the heat generated in the vehicle-side terminal  50  can be absorbed by the heat storage material  65  accommodated inside the case  61 . In this way, a sudden temperature increase of the vehicle-side terminal  50  can be suppressed. Further, since the heat storage material  65  can be accommodated in the case  61  separate from the vehicle-side terminal  50 , the heat storage body  60  can be handled separately from the vehicle-side terminal  50 . In this way, the handleability of the heat storage body  60  can be improved. 
     (5) The case  61  is made of the thermally expandable material. According to this configuration, the case  61  made of the thermally expandable material expands, for example, due to heat transferred from the vehicle-side terminal  50 . In this way, the case  61  can be suitably held in close contact with the holding portion  56 . In this embodiment, the outer surface of the case  61  can be suitably held in close contact with the inner surface of the accommodation space  57  of the vehicle-side terminal  50 . As a result, heat transferability between the vehicle-side terminal  50  and the heat storage body  60  can be enhanced. Thus, the heat generated in the vehicle-side terminal  50  can be efficiently absorbed by the heat storage material  65  of the heat storage body  60  and a temperature increase of the vehicle-side terminal  50  can be more effectively suppressed. 
     (6) The holding portion  56  is formed into a tubular shape and the heat storage body  60  is provided in the internal space of the holding portion  56 . According to this configuration, the heat storage body  60  can be held in the holding portion  56  by inserting the heat storage body  60  into the internal space of the tubular holding portion  56 . 
     (7) The vehicle-side connector  10  includes the vehicle-side terminals  50 , the heat storage bodies  60  held in the vehicle-side terminals  50  and the connector housing  20  for holding the vehicle-side terminals  50 . According to this configuration, the amount of heat transferred from the vehicle-side terminals  50  to the connector housing  20  can be reduced by absorbing the heat generated in the vehicle-side terminals  50  by the heat storage bodies  60 . Thus, a sudden temperature increase of the connector housing  20  can be suppressed. 
     Other Embodiments 
     The above embodiment can be modified and carried out as follows. The above embodiment and the following modifications can be carried out in combination without technically contradicting each other.
         The structure of the holding portion  56  in the above embodiment is not particularly limited. That is, the structure of the holding portion  56  is not particularly limited as long as the heat storage body  60  can be held.   For example, as shown in  FIGS. 6 and 7 , a holding portion  90  may be adopted instead of the holding portion  56 . The holding portion  90  includes, for example, a bottom wall  91  extending between the locking portion  55  and the wire connecting portion  54  and a pair of projecting pieces  92  projecting upward from both end parts in the lateral direction of the bottom wall  91 . The bottom wall  91  is, for example, formed to expand in the front-rear direction and lateral direction. The respective projecting pieces  92  are formed to project in a direction (here, upward) intersecting an arrangement direction (here, front-rear direction) of the terminal connecting portion  51 , the holding portion  90  and the wire connecting portion  54 . The holding portion  90  in this case holds the heat storage body  60  by crimping the projecting pieces  92  to the outer surface of the heat storage body  60 . In this way, the projecting pieces  92  can be suitably held in close contact with the outer surface of the heat storage body  60 . The projecting pieces  92  are shaped in conformity with the outer peripheral surface of the case body  62 . The projecting pieces  92  are formed to cover the outer peripheral surface of the case body  62 .       

     In this modification, the locking portion  55  is in the form of a column having a solid internal structure. The locking portion  55  of this modification is in the form of a solid cylinder. At this time, the bottom wall of the case body  62  of the heat storage body  60  is at least partially in contact with the rear surface of the locking portion  55  as shown in  FIG. 7 . The outer surface of the case body  62  and the rear surface of the locking portion  55  may be in surface contact, line contact or point contact with each other. 
     The heat storage body  60  of this modification is placed on the bottom wall  91  of the holding portion  90  in a state where the pair of projecting pieces  92  are projecting upward, i.e. on the bottom wall  91  exposed from the pair of projecting pieces  92 . Subsequently, the pair of projecting pieces  92  are crimped along the outer surface of the heat storage body  60 . In this way, the heat storage body  60  can be held in the holding portion  90  with the projecting pieces  92  held in close contact with the outer surface of the heat storage body  60 . As a result, heat transferability between the vehicle-side terminal  50  and the heat storage body  60  can be enhanced. Thus, heat generated in the vehicle-side terminal  50  can be efficiently absorbed by the heat storage body  60  and a temperature increase of the vehicle-side terminal  50  can be effectively suppressed.
         For example, as shown in  FIGS. 8 and 9 , a holding portion  100  may be adopted instead of the holding portion  56 . The holding portion  100  includes, for example, a bottom wall  101  extending between the locking portion  55  and the wire connecting portion  54  and a pair of side walls  102  rising on both end parts in the lateral direction of the bottom wall  101 . The bottom wall  101  is, for example, formed to expand in the front-rear direction and lateral direction.       

     As shown in  FIG. 8 , the respective side walls  102  are formed to project in a direction (here, upward) intersecting an arrangement direction (here, front-rear direction) of the terminal connecting portion  51 , the holding portion  100  and the wire connecting portion  54 . The respective side walls  102  are, for example, formed to rise perpendicularly from the upper surfaces of the both end parts in the lateral direction of the bottom wall  101 . Recesses  102 X recessed toward the bottom wall  101  are formed in the upper end surfaces of the respective side walls  102 . Note that “perpendicular” in this specification means not only strictly perpendicular, but also substantially perpendicular within a range where functions and effects in this modification are achieved. 
     A groove-like accommodation space  104  is formed by the bottom wall  101  and the pair of side walls  102 . The accommodation space  104  is, for example, formed into a rectangular tube shape. The accommodation space  104  is, for example, formed to be open upward. The accommodation space  104  is, for example, formed to penetrate in the front-rear direction. Here, the locking portion  55  of this modification is in the form of a solid cylinder. Thus, as shown in  FIG. 9 , a part of the rear surface of the locking portion  55  is exposed from the accommodation space  104 . 
     A heat storage body  110  is held in the holding portion  100 . That is, the heat storage body  110  is provided between the terminal connecting portion  51  and the wire connecting portion  54 . The heat storage body  110  of this modification is accommodated in the accommodation space  104  of the vehicle-side terminal  50 . The heat storage body  110  includes a case  111  and the heat storage material  65  accommodated in the case  111 . 
     The case  111  includes s a case body  112  in the form of a bottomed tube formed to contact the inner surface of the accommodation space  104 , and a cover  113  for closing an opening of the case body  112 . Similarly to the case body  62  and the cover  63  (see  FIG. 5 ), a thermally expandable material or thermally conductive material can be used as materials of the case body  112  and the cover  113 . The case body  112  and the cover  113  may be made of the same material or may be made of different materials. 
     The outer surface of the case body  112  is, for example, shaped to correspond to the inner surface of the accommodation space  104 . The case body  112  of this embodiment is in the form of a bottomed rectangular tube. External dimensions of the case body  112  are, for example, set to be fittable into the accommodation space  104 . The case body  112  includes an accommodating portion  114  for accommodating the heat storage material  65 . 
     As shown in  FIG. 8 , the cover  113  is fixed to the case body  112  to close an opening of the case body  112 . The cover  113  is secured to the case body  112 , for example, by a method such as ultrasonic welding or laser welding. The cover  113  is, for example, in the form of a substantially rectangular plate. The cover  113  includes a pair of engaging portions  113 A to be engaged with the side walls  102  of the holding portion  100 . The respective engaging portions  113 A are, for example, formed to project in the lateral direction. The respective engaging portions  113 A are, for example, formed at positions corresponding to the recesses  102 X of the side walls  102 . For example, the engaging portion  113 A is formed to engage an engaging portion (not shown) formed in the recess  102 X of the side wall  102 . 
     As shown in  FIG. 9 , if the opening of the case body  112  is closed by the cover  113  with the heat storage material  65  accommodated in the accommodating portion  114  of the case body  112 , the heat storage material  65  is confined inside the case  111 . For example, the cover  113  is so fixed to the case body  112  that the liquefied heat storage material  65  cannot flow out. 
     The heat storage body  110  of this modification is, for example, inserted into the accommodation space  104  of the holding portion  100  from above along the vertical direction. The heat storage body  110  at this time is, for example, such that the cover  113  is fixed to the case body  112  and the heat storage material  65  is confined inside the case  111 . Then, as shown in  FIG. 8 , the engaging portions  113 A of the cover  113  are engaged with the engaging portions (not shown) formed in the recesses  102 X of the side walls  102 , whereby the heat storage body  110  is held in the holding portion  100 . In this way, the heat storage body  110  can be easily held in the holding portion  100 . 
     With the heat storage body  110  held in the holding portion  100 , the upper surface of the cover  113  is, for example, exposed from the holding portion  100 . With the heat storage body  110  held in the holding portion  100 , the bottom wall of the case body  112  is, for example, at least partially in contact with the inner surface of the accommodation space  104 , specifically the upper surface of the bottom wall  101 . With the heat storage body  110  held in the holding portion  100 , the side walls of the case body  112  are, for example, at least partially in contact with the inner surface of the accommodation space  104 , specifically the inner side surfaces of the side walls  102 . The outer surface of the case body  112  and the inner surface of the accommodation space  104  may be in surface contact, line contact or point contact with each other.
         Although the engaging portions  113 A to be engaged with the side walls  102  of the holding portion  100  are provided on the cover  113  in the modification shown in  FIG. 8 , the formation positions of the engaging portions  113 A are not particularly limited. For example, the engaging portions  113 A may be provided on the case body  112 .   Although the terminal connecting portion  51  is embodied as a female terminal including the tubular connecting portion  53  in the above embodiment, there is no limitation to this.       

     For example, as shown in  FIGS. 10 and 11 , a terminal connecting portion  51 A may be adopted instead of the terminal connecting portion  51 . The terminal connecting portion  51 A is a male terminal. The terminal connecting portion  51  is, for example, in the form of a column having a solid internal structure. The terminal connecting portion  51 A of this modification is in the form of a solid cylinder. In this case, the charger-side terminal  82  (see  FIG. 3 ) is, for example, a female terminal. 
     For example, as shown in  FIGS. 12 and 13 , a terminal connecting portion  51 B may be adopted instead of the terminal connecting portion  51 . The terminal connecting portion  51 B is, for example, in the form of a flat plate. The charger-side terminal  82  (see  FIG. 3 ) in this case may be a female terminal or flat plate-like terminal.
         Although the heat storage body  60  is held inside the holding portion  56  in the above embodiment, there is no limitation to this. For example, the heat storage body  60  may be held outside the holding portion  56 . For example, the heat storage body  60  may be held on the holding portion  56  to cover the outer surface of the holding portion  56 .       

     For example, as shown in  FIGS. 12 and 13 , a heat storage body  120  may be held outside a holding portion  58  provided between the terminal connecting portion  51 B and the wire connecting portion  54 . The heat storage body  120  is held on the holding portion  58  to partially cover the outer surface of the holding portion  58 . 
     As shown in  FIG. 13 , the heat storage body  120  includes a case  121  and the heat storage material  65  accommodated in the case  121 . The case  121  includes a case body  122  in the form of a bottomed tube and a cover  123  for closing an opening of the case body  122 . Similarly to the case body  62  and the cover  63  (see  FIG. 5 ), a thermally expandable material or thermally conductive material can be used as materials of the case body  122  and the cover  123 . The case body  122  and the cover  123  may be made of the same material or may be made of different materials. 
     The case body  122  of this embodiment is in the form of a bottomed rectangular tube. The case body  122  is dimensioned to be fittable to the holding portion  58  from outside. The case body  122  includes an accommodating portion  124  for accommodating the heat storage material  65 . The cover  123  is fixed to the case body  122  to close an opening of the case body  122 . The cover  123  is secured to the case body  122 , for example, by a method such as ultrasonic welding or laser welding. The cover  123  is, for example, in the form of a substantially rectangular plate. With the heat storage body  120  held on the holding portion  58 , the lower surface of the cover  123  is, for example, in contact with the upper surface of the holding portion  58 . The lower surface of the cover  123  and the upper surface of the holding portion  58  may be in surface contact, line contact or point contact with each other. 
     If the opening of the case body  122  is closed by the cover  123  with the heat storage material  65  accommodated in the accommodating portion  124  of the case body  122 , the heat storage material  65  is confined inside the case  121 . For example, the cover  123  is so fixed to the case body  122  that the liquefied heat storage material  65  cannot flow out. 
     As shown in  FIG. 12 , the case body  122  includes a pair of engaging portions  126  to be engaged with the holding portion  58 . The respective engaging portions  126  are, for example, formed to project downward from side walls of the case body  122  located on both end parts in the lateral direction. For example, the respective engaging portions  126  are formed to project further downward than the accommodating portion  124  (see  FIG. 13 ). An engaging claw  126 A to be engaged with the lower surface of the holding portion  58  is formed on a lower end part of the engaging portion  126 . The engaging claw  126 A is formed to project toward a laterally central part of the holding portion  58 . The heat storage body  120  is held on the holding portion  58  by the engagement of the engaging claws  126 A with the lower surface of the holding portion  58 . At this time, the holding portion  58  is sandwiched by the cover  123  (see  FIG. 13 ) and the engaging portions  126  (engaging claws  126 A).
         Although the holding portion  56  is provided between the locking portion  55  and the wire connecting portion  54  in the above embodiment, there is no limitation to this. For example, the holding portion  56  may be provided between the locking portion  55  and the terminal connecting portion  51 .   Although the holding portion  56  and the heat storage body  60  held in the holding portion  56  are provided between the locking portion  55  and the wire connecting portion  54  in the above embodiment, there is no limitation to this. That is, the formation position of the holding portion  56  is not particularly limited as long as the vehicle-side terminal  50  is structured to hold the heat storage body  60  in the holding portion  56 , which is a part of the vehicle-side terminal  50 . For example, the holding portion  56  may be provided at a position vertically overlapping the wire connecting portion  54 .   The retainer  40  in the above embodiment may be omitted.   The connection method of the wire connecting portion  54  and the wire  70  in the above embodiment is not limited to crimping. For example, the wire connecting portion  54  and the wire  70  may be connected by laser welding, ultrasonic welding or bolting.   The structure of the wire  70  in the above embodiment is not particularly limited. For example, the wire  70  may be embodied by a busbar.   Although the heat storage body  60  is installed in the vehicle-side terminal  50  provided in the vehicle-side connector  10  for charging the power storage device installed in the vehicle V in the above embodiment, there is no limitation to this. For example, the heat storage body  60  may be installed in a connection terminal provided in a connector installed in the vehicle V other than the vehicle-side connector  10 .       

     The charger-side connector  80  of the embodiment is an example of a power supply connector including a power supply terminal. The vehicle-side connector  10  of the embodiment is an example of a power receiving connector including a power receiving terminal. The connection terminal of the embodiment is an example of a vehicle charging terminal and may be, for example, a vehicle power receiving terminal. The vehicle-side terminal  50  of the embodiment is an example of a terminal fitting. The case  61 ,  111 ,  121  of the heat storage body  60 ,  110 ,  120  of the embodiment is an example of a heat storage material container prepared independently of the terminal fitting and heat-transferably coupled to the terminal fitting. The accommodating portion  64 ,  114 ,  124  of the embodiment is an example of a heat storage material chamber sealable so that the heat storage material  65  does not leak. The holding portion  56  of the embodiment is an example of a heat storage material container mount to which the heat storage material container is fixedly mounted. 
     The present disclosure includes the following implementation examples. Reference signs of several constituent elements of illustrative embodiments are given not for limitation, but for understanding assistance. Matters described in the following implementation examples may be partly omitted or several of the matters described in the implementation examples may be selected or extracted and combined. 
     [Addendum 1] The present disclosure includes a manufacturing method for vehicle charging terminal. In several implementation examples, the manufacturing method for vehicle charging terminal may include a step of preparing a terminal fitting ( 50 ), a step of preparing a heat storage body ( 60 ;  110 ;  120 ) and a step of fixing the heat storage body ( 60 ;  110 ;  120 ) to the terminal fitting ( 50 ). 
     [Addendum 2] In several implementation examples, the step of preparing the terminal fitting ( 50 ) may include a step of integrally forming a terminal connecting portion ( 51 ;  51 A;  51 B) configured to be connected to a power supply terminal, a wire connecting portion ( 54 ) configured to be connected to a wire and a container mount ( 56 ) provided between the terminal connecting portion ( 51 ;  51 A;  51 B) and the wire connecting portion ( 54 ). The integrally forming step may include a step of press-working a metal plate. 
     [Addendum 3] In several implementation examples, the step of preparing the heat storage body ( 60 ;  110 ;  120 ) may include a step of preparing a heat storage material ( 65 ), a step of preparing a heat storage material container ( 61 ;  111 ;  121 ) and a step of accommodating the heat storage material ( 65 ) into the heat storage material container ( 61 ;  111 ;  121 ). 
     [Addendum 4] In several implementation examples, the step of preparing the heat storage material ( 65 ) may include a step of preparing the heat storage material ( 65 ) as a solid having a predetermined shape, such in the form of powder, particles, flakes or a block. The heat storage material ( 65 ) may be configured to be liquefied, fluidized or softened in the heat storage material container ( 61 ;  111 ;  121 ) by receiving heat of the terminal fitting transferred via the heat storage material container ( 61 ;  111 ;  121 ). 
     [Addendum 5] In several implementation examples, the step of preparing the heat storage material container ( 61 ;  11 ;  121 ) may include a step of preparing the heat storage material container ( 61 ;  111 ;  121 ) configured to thermally couple the terminal fitting ( 50 ) and the heat storage material ( 65 ) and promote heat transfer from the terminal fitting to the heat storage material ( 65 ). 
     [Addendum 6] In several implementation examples, the step of accommodating the heat storage material ( 65 ) into the heat storage material container ( 61 ;  111 ;  121 ) may include a step of sealing the heat storage material container ( 61 ;  111 ;  121 ). 
     [Addendum 7] In several implementation examples, the step of fixing the heat storage body ( 60 ;  110 ;  120 ) to the terminal fitting ( 50 ) may include a step of fixedly mounting the heat storage material container ( 61 ;  111 ;  121 ) to the container mount ( 56 ) of the terminal fitting ( 50 ) after the terminal fitting ( 50 ) is prepared. 
     [Addendum 8] In several implementation examples, the fixedly mounting step may include a step of bringing the heat storage material container ( 61 ;  111 ;  121 ) and the container mount ( 56 ) into close contact over a contact area. 
     The embodiment disclosed this time should be considered illustrative in all aspects, rather than restrictive. The scope of the present invention is represented not by the meaning described above, but by claims and is intended to include all changes in the scope of claims and in the meaning and scope of equivalents. 
     LIST OF REFERENCE NUMERALS 
     V vehicle 
       10  vehicle-side connector 
       20  connector housing 
       30  housing body 
       31  fitting portion 
       31 A receptacle 
       31 B back wall portion 
       32  flange portion 
       32 X mounting hole 
       33  tube portion 
       34  terminal accommodating portion 
       35  terminal holding portion 
       40  retainer 
       41  base portion 
       42  peripheral wall 
       43  terminal pressing portion 
       44  wire holding portion 
       45  surrounding wall portion 
       50  vehicle-side terminal 
       51 ,  51 A,  51 B terminal connecting portion 
       52  base portion 
       53  tubular connecting portion 
       53 A resilient piece 
       53 X slit 
       54  wire connecting portion 
       55  locking portion 
       56  holding portion 
       57  accommodation space 
       58  holding portion 
       60 ,  110 ,  120  heat storage body 
       61 ,  111 ,  121  case 
       62 ,  112 ,  122  case body 
       63 ,  113 ,  123  cover 
       64 ,  114 ,  124  accommodating portion 
       65  heat storage material 
       70  wire 
       71  core 
       72  insulation coating 
       80  charger-side connector 
       81  connector housing 
       82  charger-side terminal 
       90  holding portion 
       91  bottom wall 
       92  projecting piece 
       100  holding portion 
       101  bottom wall 
       102  side wall 
       102 X recess 
       104  accommodation space 
       113 A engaging portion 
       126  engaging portion 
       126 A engaging claw