Patent Publication Number: US-10777930-B2

Title: Mating terminal, multifunctional high-voltage connector and battery product

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority to Chinese patent application No. CN201821314004.7, filed on Aug. 15, 2018, which is incorporated herein by reference in its entirety. 
     FIELD OF THE PRESENT DISCLOSURE 
     The present disclosure relates to the field of connector technology, and particularly relates to a mating terminal, a multifunctional high-voltage connector and a battery product. 
     BACKGROUND OF THE PRESENT DISCLOSURE 
     With the continuous development of the new energy industry, the battery product (such as a battery pack or a high-voltage cartridge) in the market intends to develop toward high energy density and large current, which makes the safety performance of the battery product appear particularly important. In the maintenance process of the battery product, in order to ensure the personal safety of the operator, a Manual Service Disconnect (MSD) is usually used for the operation of turning on or turning off a circuit. 
     The MSD generally comprises a pedestal, two mating terminals, an upper cover and a conductive connection structure. The two mating terminals are spaced apart from each other and each of the mating terminals is fixedly mounted to the pedestal, and the conductive connection structure is fixedly mounted to the upper cover. The existing mating terminal is usually a connection sheet structure (such as a copper bar), when the conductive connection structure is mated with the mating terminal, the following problems will exist: (1) the mating terminal and the conductive connection structure are in single-sided contact, and the poor contact is prone to occur; (2) it requires the high dimensional accuracy between the mating terminal and the conductive connection structure; (3) repeated insertions and extractions easily result in the wearing of the contact surface, which reduces the connection reliability between the mating terminal and the conductive connection structure. 
     SUMMARY OF THE PRESENT DISCLOSURE 
     In view of the problem existing in the background, an object of the present disclosure is to provide a mating terminal, a multifunctional high-voltage connector and a battery product, when the mating terminal is applied to the multifunctional high-voltage connector, the mating terminal directly clamps the conductive connection structure, which improves the connection reliability between the mating terminal and the conductive connection structure, and when the multifunctional high-voltage connector is applied to the battery product, which reduces the connection resistance in the high-voltage circuit of the battery product. 
     In order to achieve the above object, the present disclosure provides a mating terminal, which comprises two elastic sheets and a connection sheet. The two elastic sheets are disposed facing each other in a length direction, each of the elastic sheets has: a body portion; and an elastic contact portion protruding from the body portion in a height direction. The connection sheet has: a first connecting portion extending in the height direction; and a second connecting portion extending in the length direction. The first connecting portion of the connection sheet is fixed between the body portions of the two elastic sheets, the second connecting portion is positioned outside the two elastic sheets in the length direction. 
     The elastic contact portion of each elastic sheet has: a first extending segment connected to the body portion and extending obliquely toward the other elastic sheet in the height direction; and a second extending segment connected to the first extending segment and extending obliquely away from the other elastic sheet in the height direction. 
     The elastic contact portion of each elastic sheet is provided as multiple in number, the multiple elastic contact portions are spaced apart from each other in a width direction. 
     The mating terminal comprise a protective shell having two first side walls disposed facing each other in the length direction. The elastic contact portion of each elastic sheet is positioned between the two first side walls of the protective shell and elastically presses against the corresponding first side wall so as to be fixed to the protective shell. 
     The protective shell further has: two top walls spaced apart from each other in the length direction, each of the top walls is correspondingly connected to one of the first side walls and extends toward the other of the first side walls in the length direction. A top end of the elastic contact portion of the elastic sheet away from the main body portion elastically presses against the top wall from below the top wall of the protective shell. 
     The second connecting portion of the connection sheet is directly connected to the first connecting portion. 
     The second connecting portion is spaced apart from the first connecting portion in the length direction. The connection sheet further has a third connecting portion positioned between the first connecting portion and the second connecting portion, and the third connecting portion is connected with the first connecting portion and the second connecting portion. 
     The present disclosure further provides a multifunctional high-voltage connector, which comprises: an upper cover; a pedestal assembled with the upper cover; a conductive connection structure fixedly mounted to the upper cover; and the two mating terminals described above. The two mating terminals are spaced apart from each other in the length direction, and each of the mating terminals is fixedly mounted to the pedestal, the elastic contact portions of the two elastic sheets of each mating terminal are used for clamping the conductive connection structure. 
     The second connecting portion of one of the mating terminals is spaced apart from the first connecting portion of the one of the mating terminals in the length direction, and the connection sheet of the one of the mating terminals further has a third connecting portion positioned between the first connecting portion and the second connecting portion of the one of the mating terminals, and the third connecting portion is connected with the first connecting portion and the second connecting portion of the one of the mating terminals. The second connecting portion of the connection sheet of the other of the mating terminals is directly connected to the first connecting portion of the other of the mating terminals. 
     The multifunctional high-voltage connector further comprises a harness assembly fixedly mounted to the pedestal, and the harness assembly is directly connected to the second connecting portion of the one of the mating terminals. 
     The present disclosure further provides a battery product, which comprises a battery assembly, a box, and the multifunctional high-voltage connector described above, the pedestal of the multifunctional high-voltage connector is fixedly mounted to the box, the battery assembly is directly connected to the other of the mating terminals. 
     The present disclosure has the following beneficial effects: when the upper cover and the pedestal of the multifunctional high-voltage connector are assembled, the elastic contact portions of the two elastic sheets of the mating terminal directly clamp the conductive connection structure, therefore it is not necessary to make the conductive connection structure to be connected the mating terminal by the adapter sheet, thereby reducing the connection resistance in the high-voltage circuit of the battery product. Moreover, based on the elasticity of the elastic sheet itself, the conductive connection portion of the conductive connection structure is firmly fixed between the two elastic sheets of the corresponding mating terminal, thereby improving the connection reliability between the conductive connection structure and the mating terminal. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  is a perspective view of a multifunctional high-voltage connector according to the present disclosure. 
         FIG. 2  is a schematic view showing an electrical connection relationship of components in the multifunctional high-voltage connector in an embodiment, in which a conductive connection structure is a fuse. 
         FIG. 3  is a schematic view showing an electrical connection relationship of components in the multifunctional high-voltage connector in another embodiment, in which the conductive connection structure is an one-piece structure. 
         FIG. 4  is a perspective view of the multifunctional high-voltage connector of  FIG. 1  with a mounting seat of a pedestal removed. 
         FIG. 5  is a perspective view of the multifunctional high-voltage connector of  FIG. 4  with a harness assembly removed. 
         FIG. 6  is a perspective view of the conductive connection structure of  FIG. 2 . 
         FIG. 7  is a perspective view of a conductive connection portion of  FIG. 6 . 
         FIG. 8  is a perspective view of the conductive connection structure of  FIG. 3 . 
         FIG. 9  is a schematic view showing the assembling of the conductive connection structure of  FIG. 6  and an upper cover. 
         FIG. 10  is a top view of  FIG. 9 . 
         FIG. 11  is a cross sectional view taken along an A-A line of  FIG. 9 . 
         FIG. 12  is a perspective view of  FIG. 9  with an outer shell of the upper cover removed. 
         FIG. 13  is a varied example of  FIG. 12 . 
         FIG. 14  is another varied example of  FIG. 12 . 
         FIG. 15  is a perspective view of an inner shell of the upper cover of  FIG. 9 . 
         FIG. 16  is a perspective view of an insulation sheet of  FIG. 12 . 
         FIG. 17  is a perspective view of an insulation sheet of  FIG. 13 . 
         FIG. 18  is a schematic view showing the assembling of a base of the pedestal and a mating terminal. 
         FIG. 19  is a top view of  FIG. 18  with a protective shell of the mating terminal removed for the sake of clarity. 
         FIG. 20  is a cross sectional view taken along a B-B line of  FIG. 19 . 
         FIG. 21  is a perspective view of the base of the pedestal of  FIG. 18 . 
         FIG. 22  is a perspective view of the mating terminal at left-side of  FIG. 18 . 
         FIG. 23  is a perspective view of the mating terminal at right-side of  FIG. 18 . 
         FIG. 24  is a perspective view of the mating terminal of  FIG. 22  with the protective shell removed. 
         FIG. 25  is a perspective view of the mating terminal of  FIG. 23  with the protective shell removed. 
         FIG. 26  is a perspective view of the protective shell of the mating terminal. 
         FIG. 27  is a schematic view showing the assembling of the base of the pedestal and the mounting seat. 
         FIG. 28  is a perspective view of the mounting seat of  FIG. 27 . 
     
    
    
     Reference numerals are represented as follows:
           1  multifunctional high-voltage connector
             11  upper cover
                 111  outer shell     112  inner shell
                     1121  first receiving portion     11211  limiting projection     1122  second receiving portion     11221  recessed groove     1123  extending portion   
                     113  insulation sheet
                     1131  isolating portion     1132  fixing portion     1133  supporting portion   
                   
                 12  pedestal
                 121  base
                     1211  first bottom plate portion     1212  assembling portion     1213  side plate portion     1214  first latching portion   
                     122  mounting seat
                     1221  second bottom plate portion     1222  mounting portion   
                   
                 13  conductive connection structure
                 131  main body portion     132  conductive connection portion
                     1321  first contact segment     13211  injection-adhesive hole     13212  first connection hole     13213  second connection hole     13214  third connection hole     1322  second contact segment     13221  first avoiding hole     13222  second avoiding hole     1323  transitional connection segment   
                   
                 14  mating terminal
                 141  elastic sheet
                     1411  body portion     1412  elastic contact portion     14121  first extending segment     14122  second extending segment   
                     142  connection sheet
                     1421  first connecting portion     1422  second connecting portion     1423  third connecting portion   
                     143  protective shell
                     1431  first side wall     1432  second side wall     1433  top wall     1434  second latching portion   
                   
                 15  harness assembly
                 151  connection terminal     152  wire   
               
           L length direction   H height direction   W width direction       

     DETAILED DESCRIPTION 
     Hereinafter a mating terminal, a multifunctional high-voltage connector and a battery product according to the present disclosure will be described in detail in combination with the figures. 
     A battery product according to the present disclosure comprises a battery assembly (not shown), a box (not shown) and a multifunctional high-voltage connector  1 . The battery assembly is accommodated in the box and comprises a plurality of batteries, the multifunctional high-voltage connector  1  is fixedly mounted to the box and electrically connected to the battery assembly. 
     Referring to  FIG. 1  to  FIG. 4 , the multifunctional high-voltage connector  1  may comprise an upper cover  11 , a pedestal  12 , a conductive connection structure  13 , two mating terminals  14  and a harness assembly  15 . The upper cover  11  and the pedestal  12  are detachably assembled. The conductive connection structure  13  is fixedly mounted to the upper cover  11 . The two mating terminals  14  are spaced apart from each other in a length direction L, and each of the mating terminals  14  is fixedly mounted to the pedestal  12 . The harness assembly  15  is fixedly mounted to the pedestal  12  and directly connected to one of the mating terminals  14 . 
     The multifunctional high-voltage connector  1  is fixedly mounted to the box via the pedestal  12  and electrically connected to the battery assembly via the other of the mating terminals  14  (which is opposite to the mating terminal  14  directly connected to the harness assembly  15 ), thus the multifunctional high-voltage connector  1  is connected into a high-voltage circuit in the battery product. When the upper cover  11  and the pedestal  12  of the multifunctional high-voltage connector  1  are assembled, the conductive connection structure  13  is simultaneously in contact with the two mating terminals  14 , and at this time the two mating terminals  14  are connected in series, thereby turning on the high-voltage circuit in the battery product. When the battery product requires maintenance, the upper cover  11  is directly detached from the base  12 , and at this time the conductive connection structure  13  is separated from the two mating terminals  14 , thereby turning off the high-voltage circuit in the battery product. Moreover, the battery product can be electrically connected to an external device (such as another battery pack or a high-voltage cartridge) via the harness assembly  15  of the multifunctional high-voltage connector  1 . Therefore, the multifunctional high-voltage connector  1  integrates both a switch function and a high-voltage connection function. 
     The conductive connection structure  13  and the two mating terminals  14  are equivalent to a switch function component, the harness assembly  15  is equivalent to a high-voltage connection function component, and because the high-voltage connection function component is directly electrically connected with the switch function component, the connection resistance in the high voltage circuit of the battery product is greatly reduced; and because the high-voltage connection function component and the switch function component share the same pedestal  12 , the space occupied by the multifunctional high-voltage connector  1  in the battery product is reduced and the integration of the battery product is improved. 
     Referring to  FIG. 2 ,  FIG. 3 ,  FIG. 6  and  FIG. 8 , the conductive connection structure  13  of the multifunctional high-voltage connector  1  may comprise: a main body portion  131 ; and two conductive connection portions  132  respectively positioned at both ends of the main body portion  131  in the length direction L, and each of the conductive connection portions  132  is connected to the main body portion  131 . When the upper cover  11  and the pedestal  12  are assembled, the two conductive connection portions  132  of the conductive connection structure  13  are respectively inserted into the two mating terminals  14 . 
     In an embodiment, the conductive connection structure  13  may be an one-piece structure (that is a whole piece of connection sheet), the conductive connection portion  132  of the conductive connection structure  13  directly protrudes from the main body portion  131  in a height direction H and may be integrally formed with the main body portion  131 , as shown in  FIG. 3  and  FIG. 8 . At this time, the conductive connection structure  13  and the two mating terminals  14  are only equivalent to the switch function component for turning off or turning on the high-voltage circuit in the battery product. 
     In another embodiment, the conductive connection structure  13  can be a fuse, as shown in  FIG. 2  and  FIG. 6 . Because the fuse has a self-fusing function, it can provide an overload protection for the high-voltage circuit in the battery product. Therefore, the multifunctional high-voltage connector  1  not only integrates the switch function and the high-voltage connection function, but also has a circuit overload-protection function, thereby further improving the integration of the battery product. 
     When the conductive connection structure  13  is the fuse, referring to  FIG. 2  and  FIG. 6 , the main body portion  131  of the conductive connection structure  13  may comprise: a tube body having openings formed at both ends in the length direction L; and a conductive fusing body (not shown) accommodated in the tube body via the opening. When the current in the high-voltage circuit of the battery product is excessively large, the conductive fusing body of the conductive connection structure  13  generates sufficient heat under the action of the excessively large current and fuses itself, thereby achieving the over-current protection for the battery product. 
     Referring to  FIG. 2  and  FIG. 6 , the conductive connection portion  132  of the conductive connection structure  13  is an independent connection sheet structure and needs to be assembled with the tube body and the conductive fusing body of the main body portion  131 . Specifically, the conductive connection portion  132  may have: a first contact segment  1321  connected to the conductive fusing body and sealing a corresponding opening of the tube body; a second contact segment  1322  spaced apart from the first contact segment  1321  in the length direction L and extending in the height direction H; and a transitional connection segment  1323  positioned between the second contact segment  1322  and the first contact segment  1321  and connected with the second contact segment  1322  and the first contact segment  1321 . When the upper cover  11  and the pedestal  12  of the multifunctional high-voltage connector  1  are assembled, the second contact segment  1322  of each of the conductive connection portions  132  of the conductive connection structure  13  is directly inserted into the corresponding mating terminal  14  to turn on the high-voltage circuit in the battery product. 
     In order to facilitate the assembling of the fuse, generally, the conventional fuse is additionally provided with a package plate to seal the opening of the tube body, and at this time a part of the conductive connection portion of the fuse needs to pass through the package plate and extend into the tube body so as to be connected with the conductive fusing body, or a part of the conductive fusing body passes through the package plate and extends out of the tube body so as to be connected with the conductive connection portion. In the multifunctional high-voltage connector  1  of the present disclosure, referring to  FIG. 2  and  FIG. 6 , because the first contact segment  1321  of each of the conductive connection portions  132  of the conductive connection structure  13  directly seals the corresponding opening of the tube body, therefore it is not necessary to additionally provide the package plate, thereby making the structure of the conductive connection structure  13  simple and the volume of the conductive connection structure  13  small, reducing the assembling steps, and improving the space utilization of the multifunctional high-voltage connector  1 . Moreover, when the upper cover  11  and the pedestal  12  of the multifunctional high-voltage connector  1  are assembled, the second contact segment  1322  of each of the conductive connection portions  132  of the conductive connection structure  13  is directly inserted into the corresponding mating terminal  14 , therefore it is not necessary to use an adapter sheet to connect the conductive connection structure  13  and the mating terminal  14 , thereby further reducing the connection resistance in the high-voltage circuit of the battery product. 
     Referring to  FIG. 2 ,  FIG. 6  and  FIG. 7 , the first contact segment  1321 , the transitional connection segment  1323  and the second contact segment  1322  of the conductive connection portion  132  of the conductive connection structure  13  form a U-shaped structure. 
     Referring to  FIG. 7 , the first contact segment  1321  of the conductive connection portion  132  may be provided with: a first connection hole  13212  provided on a portion of the first contact segment  1321  close to the transitional connection segment  1323  in the height direction H, and a second connection hole  13213  provided on a portion of the first contact segment  1321  away from the transitional connection segment  1323  in the height direction H. The first contact segment  1321  is fixedly connected to the tube body of the main body portion  131  with the first connection hole  13212  and the second connection hole  13213 . 
     The first contact segment  1321  may be fixedly connected to the tube body of the main body portion  131  by a fastener S (such as a bolt). In order to ensure the heat dissipation of the conductive connection structure  13  itself, the tube body may be made of a ceramic material. 
     Referring to  FIG. 7 , the first contact segment  1321  may further be provided with a third connection hole  13214  provided between the first connection hole  13212  and the second connection hole  13213  in the height direction H. The first contact segment  1321  is fixedly connected to the tube body of the main body portion  131  with the third connection hole  13214 . 
     The first contact segment  1321  may be fixedly connected to the conductive fusing body of the main body portion  131  by a fastener S. Of course, the first contact segment  1321  may also be welded (for example laser welded, ultrasonically welded and so on) to the conductive fusing body of the main body portion  131 . 
     During the assembling process of the conductive connection structure  13 , for the convenience of assembling, the second contact segment  1322  may be provided with: a first avoiding hole  13221  aligned with the first connection hole  13212  in the length direction L; and a second avoiding hole  13222  aligned with the third connection hole  13214  in the length direction L. 
     The assembling process of the conductive connection structure  13  is described as follows: firstly, the first contact segment  1321  of one of the conductive connection portions  132  is fixedly connected with the conductive fusing body of the main body portion  131 ; then, the conductive fusing body and the one of the conductive connection portions  132  connected together pass through the tube body via the opening of the tube body and the first contact segment  1321  of the conductive connection portion  132  is fixed to the tube body of the main body portion  131 ; finally, the first contact segment  1321  of the other of the conductive connection portions  132  is fixedly connected with the conductive fusing body of the main body portion  131  and the first contact segment  1321  of the other of the conductive connection portions  132  is fixed to the tube body of the main body portion  131 . 
     After the assembling of the conductive connection structure  13  is completed, in order to ensure the sealing between the conductive connection portion  132  and the main body portion  131 , the first contact segment  1321  of the conductive connection portion  132  may further be provided with an injection-adhesive hole  13211  for filling a sealing adhesive between the first contact segment  1321  and the tube body. 
     Referring to  FIG. 9  to  FIG. 14 , the upper cover  11  may comprise: an outer shell  111 ; an inner shell  112  fixed inside the outer shell  111 , and the inner shell  112  is provided with an opening facing the outer shell  111  in the height direction H; and at least one insulation sheet  113 , each insulation sheet  113  is fixed to the inner shell  112 . Each conductive connection portion  132  and the main body portion  131  of the conductive connection structure  13  are accommodated in the inner shell  112  via the opening of the inner shell  112 , the insulation sheet  113  isolates the conductive connection structure  13  from the outer shell  111  at the opening of the inner shell  112 . Here, the outer shell  111 , the inner shell  112  and the insulation sheet  113  are separately molded and then assembled together, which replaces the conventional molding process of double injection, thereby simplifying the production process of the multifunctional high-voltage connector  1 , improving the production efficiency, and reducing the weight. 
     In order to ensure the heat dissipation of the upper cover  11 , the outer shell  111  may be made of a metal material, the inner shell  112  may be provided with a plurality of through holes. The material of the inner shell  112  may be PBT, PPT or the like, and the material of the insulation sheet  113  may be PPT, PA66 or the like. 
     Referring to  FIG. 15 , the inner shell  112  may have: a first receiving portion  1121 ; second receiving portions  1122  respectively formed on both sides of the first receiving portion  1121  in the length direction L; and extending portions  1123  respectively formed outside the second receiving portions  1122  in the length direction L. The first receiving portion  1121  and the second receiving portion  1122  of the inner shell  112  are communicated with the opening of the inner shell  112 , the first receiving portion  1121  receives the main body portion  131  of the conductive connection structure  13 , the second receiving portion  1122  receives the corresponding conductive connection portion  132 , and the extending portion  1123  is fixedly connected to the outer shell  111 . 
     Referring to  FIG. 11  to  FIG. 14 ,  FIG. 16  and  FIG. 17 , the insulation sheet  113  may have: an isolating portion  1131  extending in the width direction W; and a fixing portion  1132  positioned on one side of the isolating portion  1131  in the width direction W and extending in the height direction H. The isolating portion  1131  of the insulation sheet  113  isolates the conductive connection structure  13  from the outer shell  111  at the opening of the inner shell  112 , and the fixing portion  1132  is fixed to the inner shell  112 . 
     Referring to  FIG. 15 , a recessed groove  11221  is provided on one side of the second receiving portion  1122  facing the outer shell  111 . The fixing portion  1132  of the insulation sheet  113  is inserted into the corresponding recessed groove  11221  and fitted with the recessed groove  11221  so as to be fixed to the inner shell  112 . 
     Referring to  FIG. 11  to  FIG. 14 ,  FIG. 16  and  FIG. 17 , the insulation sheet  113  may further have: a plurality of supporting portions  1133  extending in the height direction H and disposed opposite to the fixing portion  1132 , and the supporting portion  1133  is supported between the isolating portion  1131  and the outer shell  111 . Here, the plurality of supporting portions  1133  increase the electrical gap between the conductive connection structure  13  and the outer shell  111 , which improves the safety of use of the multifunctional high-voltage connector  1 . In order to further improve the heat dissipation of the upper cover  11 , a heat conductive material, such as a heat conductive adhesive or a heat conductive pad, may be filled between the conductive connection structure  13  and the outer shell  111 . 
     Referring to  FIG. 17 , the fixing portion  1132  of the insulation sheet  113  may be provided as two in number, and the two fixing portions  1132  are respectively formed on both sides of the isolating portion  1131  in the width direction W. 
     In an embodiment, referring to  FIG. 14 , the insulation sheet  113  may be provided as one in number, the isolating portion  1131  of the insulation sheet  113  extends in the length direction L and covers the whole surface of the entire conductive connection structure  13  facing the outer shell  111  at the same time. In another embodiment, referring to  FIG. 13 , the insulation sheet  113  may be provided as two in number, and the two insulation sheets  113  are spaced apart from each other in the length direction L and respectively cover both ends of the conductive connection structure  13  in the length direction L. 
     Referring to  FIG. 12 , the fixing portion  1132  of the insulation sheet  113  may be provided as one in number. Referring to  FIG. 8 , the insulation sheet  113  may be provided as four in number and disposed in two pairs, the two pairs of insulation sheets  113  are spaced apart from each other in the length direction L. The two insulation sheets  113  of each pair are disposed facing each other in the width direction W and respectively cover both ends of the conductive connection structure  13  in the width direction W. In other words, the four insulation sheets  113  are distributed at four corners of the conductive connection structure  13 , and thus isolate the entire conductive connection structure  13  from the outer shell  111 , which not only meets the requirements of the insulating protection design, but also reduces the weight of the multifunctional high-voltage connector  1 . 
     Referring to  FIG. 18  to  FIG. 25 , each of the mating terminals  14  may comprise: two elastic sheets  141  disposed facing each other in the length direction L; and a connection sheet  142 . Each of the elastic sheets  141  may have: a body portion  1411 ; and an elastic contact portion  1412  protruding from the body portion  1411  in the height direction H. The connection sheet  142  may have: a first connecting portion  1421  extending in the height direction H; and a second connecting portion  1422  extending in the length direction L. The first connecting portion  1421  of the connection sheet  142  is fixed between the body portions  1411  of the two elastic sheets  141 , the second connecting portion  1422  is positioned outside the two elastic sheets  141  in the length direction L. 
     When the upper cover  11  and the pedestal  12  are assembled, the elastic contact portions  1412  of the two elastic sheets  141  of the mating terminal  14  directly clamp the second contact segment  1322  of the corresponding conductive connection portion  132  of the conductive connection structure  13 . Here, based on the elasticity of the elastic sheet  141  itself, the conductive connection portion  132  of the conductive connection structure  13  is firmly fixed between the two elastic sheets  141  of the corresponding mating terminal  14 , thereby improving the connection reliability between the conductive connection structure  13  and the mating terminal  14 . 
     For the mating terminal  14  directly connected to the battery assembly, referring to  FIG. 23  and  FIG. 25 , the second connecting portion  1422  of the connection sheet  142  of the mating terminal  14  is directly connected to the first connecting portion  1421 . The second connecting portion  1422  of the connection sheet  142  of the mating terminal  14  is positioned on one side of the pedestal  12  facing the battery assembly and directly connected to the battery assembly, therefore it is not necessary to make the conductive connection structure  13  be connected with the mating terminal  14  by the adapter sheet, thereby reducing the connection resistance in the high-voltage circuit of the battery product. In an embodiment, the second connecting portion  1422  of the connection sheet  142  of the mating terminal  14  and the first connecting portion  1421  may form a L-shaped structure. 
     For the mating terminal  14  electrically connected to the harness assembly  15  directly, referring to  FIG. 22  and  FIG. 24 , the second connecting portion  1422  of the connection sheet  142  of the mating terminal  14  is spaced apart from the first connecting portion  1421  in the length direction L. The second connecting portion  1422  of the connection sheet  142  of the mating terminal  14  is positioned on one side of the pedestal  12  away from the battery assembly and directly connected to the harness assembly  15 , therefore it is not necessary to make the high-voltage connection function component of the multifunctional high-voltage connector  1  be connected with the switch function component by the adapter sheet, thereby reducing the connection resistance in the high-voltage circuit of the battery product. The connection sheet  142  of the mating terminal  14  may further have a third connecting portion  1423  positioned between the first connecting portion  1421  and the second connecting portion  1422 , and the third connecting portion  1423  is connected with the first connecting portion  1421  and the second connecting portion  1422 . In an embodiment, the third connecting portion  1423  of the connection sheet  142  may be formed in a L-shaped structure. 
     Referring to  FIG. 22  to  FIG. 25 , the first connecting portion  1421  of the connection sheet  142  of the mating terminal  14  may be fixedly connected to the body portions  1411  of the two elastic sheets  141  by a fastener S. 
     Referring to  FIG. 24  and  FIG. 25 , the elastic contact portion  1412  of each elastic sheet  141  may have: a first extending segment  14121  connected to the body portion  1411  and extending obliquely toward the other elastic sheet  141  in the height direction H; and a second extending segment  14122  connected to the first extending segment  14121  and extending obliquely away from the other elastic sheet  141  in the height direction H. Here, the first extending segments  14121  and the second extending segments  14122  of the elastic sheets  141  wholly form a structure having a smaller opening at the upper end and a larger waist portion, therefore the clamping force applied to the corresponding conductive connection portion  132  of the conductive connection structure  13  by the elastic sheets  141  of the mating terminal  14  is concentrated on the connected location between the first extending segment  14121  and the second extending segment  14122 , thereby improving the connection reliability between the conductive connection structure  13  and the mating terminal  14  and further reducing the connection resistance in the high-voltage circuit of the battery product. 
     Referring to  FIG. 24  and  FIG. 25 , the elastic contact portion  1412  of each elastic sheet  141  may be provided as multiple in number, the multiple elastic contact portions  1412  are spaced apart from each other in the width direction W. The multiple elastic contact portions  1412  may be formed in a finger-shaped structure. 
     In order to increase the number of insertions and extractions between the conductive connection structure  13  and the mating terminal  14 , a silver may be plated on an outer surface of the elastic contact portion  1412  of the elastic sheet  141 . 
     Referring to  FIG. 22  and  FIG. 23 , the mating terminal  14  may comprise a protective shell  143  having two first side walls  1431  disposed facing each other in the length direction L. The elastic contact portion  1412  of each elastic sheet  141  is positioned between the two first side walls  1431  of the protective shell  143  and elastically presses against the corresponding first side wall  1431  so as to be fixed to the protective shell  143 . 
     Referring to  FIG. 22 ,  FIG. 23  and  FIG. 26 , the protective shell  143  may further have: two second side walls  1432  disposed facing each other in the width direction W, each of the second side walls  1432  is connected to the two first side walls  1431 ; and two top walls  1433  spaced apart from each other in the length direction L, each of the top walls  1433  is correspondingly connected to one of the first side walls  1431  and extends toward the other of the first side walls  1431  in the length direction L. A top end of the elastic contact portion  1412  of the elastic sheet  141  away from the main body portion  1411  elastically presses against the top wall  1433  from below the top wall  1433  of the protective shell  143 , so that the elastic contact portion  1412  of the elastic sheet  141  is firmly fixed in the protective shell  143 . 
     In order to facilitate assembling, the upper cover  11  is formed with a slanted port structure (as shown in  FIG. 9 ), the pedestal  12  (as shown in  FIG. 27 ,  FIG. 28  and  FIG. 21 ) is also formed with a slanted port structure and is assembled with the upper cover  11 . Moreover, the design of the slanted port structures reduces internal space of the multifunctional high-voltage connector  1 , thereby being beneficial to improve the space utilization of the battery product. 
     Referring to  FIG. 18  to  FIG. 21 , the pedestal  12  may comprise a base  121  fixedly mounting the two mating terminals  14 . Specifically, the base  121  may have: a first bottom plate portion  1211 ; two assembling portions  1212  spaced apart from each other in the length direction L, each of the assembling portions  1212  protrudes from the first bottom plate portion  1211  in the height direction H. The connection sheet  142  of the mating terminal  14  and the main body portion  1411  of the elastic sheet  141  are embedded in the first bottom plate portion  1211  of the pedestal  12 , and at least a portion of the elastic contact portion  1412  of the elastic sheet  141  extends out of the corresponding assembling portion  1212 . The protective shell  143  of the mating terminal  14  is fixed to the corresponding assembling portion  1212 . 
     Referring to  FIG. 21 , the base  121  may have two side plate portions  1213  spaced apart from each other in the width direction W, each of the side plate portions  1213  protrudes from the first bottom plate portion  1211  in the height direction H. The assembling portion  1212  is formed between the two side plate portions  1213 . 
     Referring to  FIG. 21 , the base  121  may have a first latching portion  1214  disposed on the assembling portion  1212 . Referring to  FIG. 26 , the protective shell  143  of the mating terminal  14  may further have a second latching portion  1434  latched with the first latching portion  1213  of the base  121  of the pedestal  12  (such as a concave-convex fit) so as to be fixed to the pedestal  12 . Specifically, the first latching portion  1214  may be a protrusion, the second latching portion  1434  may be a through-hole structure; or the first latching portion  1214  may be a through-hole structure, the second latching portion  1434  may be a protrusion. 
     Referring to  FIG. 27 , the pedestal  12  may further comprise a mounting seat  122  fixedly mounting the base  121 . The mounting seat  122  of the pedestal  12  and the box of the battery product may be different components, and the pedestal  12  is fixed to the box via the mounting seat  122 . Of course, the mounting seat  122  may also be one of side walls of the box of the battery product. 
     Referring to  FIG. 28 , the mounting seat  122  may have: a second bottom plate portion  1221 ; and a mounting portion  1222  protruding from the second bottom plate portion  1221  in the height direction H. Referring to  FIG. 27 , the two side plate portions  1213  of the base  121  are positioned in the mounting portion  1222  of the mounting seat  122 , and the upper cover  11  is fixedly connected to the mounting portion  1222  of the mounting seat  122 . 
     Referring to  FIG. 2 ,  FIG. 3  and  FIG. 27 , the harness assembly  15  may comprise: a connection terminal  151 ; and a wire  152  connected to the connection terminal  151 . The connection terminal  151  is positioned in the pedestal  12  and connected to the second connecting portion  1422  of the corresponding mating terminal  14 , and the wire  152  extends out of the pedestal  12  and is used for electrically connected to the external device of the battery product.