Patent Publication Number: US-2023163609-A1

Title: Charging compartment, charging frame comprising same, battery swap station, and energy storage station

Description:
This application claims the priority of Chinese patent application 202010093469X filed on February 14th, 2020. The contents of which are incorporated herein by reference in their entirety. 
     FIELD OF INVENTION 
     The application relates to a charging compartment, a charging frame comprising the same, a battery swap station and an energy storage station. 
     PRIOR ARTS 
     In the prior art, an energy storage station or a battery swap station is usually provided with several charging compartments to charge the batteries. The battery located in the charging compartment is transported by the battery pack transfer device, after the battery pack transfer device places the battery pack on a carrying frame of the charging compartment through an extension mechanism, an extra provided avoidance structure needs to be set between the carrying mechanism and the battery pack so that the extension mechanism can be drawn out from the charging compartment, such additionally provided avoidance structures may cause the structure of the charging compartment to be complicated. At the same time, the battery pack transfer device also needs to set a relatively complex movement track to avoid the carrying frame of the charging compartment located under the battery pack, which makes the process flow of the battery pack transfer device to pick up and place the battery pack very complicated. 
     CONTENT OF THE PRESENT INVENTION 
     The technical problem to be solved in this application is to overcome the defects of the prior art that the process of taking out and placing a battery pack from a charging compartment by the battery pack transfer device is complicated, which also easily leads to the defect of the complicated structure of the charging compartment itself, and this application provides a charging compartment, a charging frame comprising the same, a battery swap station and an energy storage station. 
     The present application solves the above-mentioned technical problem through the following technical solutions: 
     A charging compartment, configured such that a battery pack is placed by a battery pack transfer device, wherein the charging compartment comprises: 
     a carrying mechanism, the carrying mechanism carries the battery pack by means of a frame structure, and the carrying mechanism is provided with a frameless space allowing an extension mechanism of the battery pack transfer device to enter when the battery pack transfer device places the battery pack in the carrying mechanism;   and an electric connection mechanism, the electric connection mechanism is arranged at the carrying mechanism, and the electric connection mechanism is configured to be electrically connected to the battery pack after the battery pack is placed in the carrying mechanism.   

     The charging compartment is provided with a frameless space on the carrying mechanism for the extension mechanism of the battery pack transfer device to enter, so as to avoid the battery pack transfer device from interfering with the carrying mechanism when placing or taking out the battery pack relative to the carrying mechanism, and at the same time save the space reserved for avoiding the extension and retraction of the extension mechanism of the battery pack transfer device, and reduce the space occupied by the charging compartment from the height, and also simplify the structure of the charging compartment and the process flow of the battery pack transfer device for taking out and placing battery packs. 
     Preferably, the carrying mechanism comprises a front carrying frame and a rear carrying frame, the front carrying frame and the rear carrying frame jointly carry the battery pack, and the frameless space is formed between the front carrying frame and the rear carrying frame, and the electrical connection mechanism is arranged on the front carrying frame, in order to form the frameless space on the carrying mechanism by arranging the frame separately. 
     Preferably, two sides of the front carrying frame are respectively provided with a first alignment mechanism, when the battery pack transfer device places the battery pack on the carrying mechanism from top to bottom, the first alignment mechanism will match with a second alignment mechanism on the side of the battery pack, so as to achieve the purpose of positioning and placing the battery pack on the carrying mechanism. 
     Preferably, the first alignment mechanism is a guide fork, and the second alignment mechanism is an alignment block, and the alignment block is arranged to be matchable with and positioned in a clamping groove between two fork portions of the guide fork, so that the horizontal displacement of the second alignment mechanism is limited by the two fork portions, so as to achieve the purpose of positioning the battery pack relative to the carrying mechanism. 
     Preferably, the top of at least one of the two fork portions of the guide fork is provided with an inclined surface or an arc surface facing the inside of the guide fork, so as to use the inclined surface or arc surface to form a guiding structure for the battery pack, the position of the battery pack is guided in a way that the inner side surface of the fork portion is in contact with the side surface of the battery pack, which can effectively improve the position accuracy of placing the battery pack. 
     Preferably, the top of the fork portion of the guide fork is turned outward toward outer side of the charging compartment, so as to form a guiding structure for the battery pack on the inner side of the fork portion, so as to realize the alignment adjustment in the width direction of the battery pack, and accurately position and place it on the battery bracket. 
     Preferably, both sides of the rear carrying frame are respectively provided with a third alignment mechanism, when the battery pack transfer device places the battery pack on the carrying mechanism from top to bottom, the battery pack is limited to be placed between the two third alignment mechanisms, through the guiding alignment function of the third alignment mechanism, the carrying mechanism is increased from two guiding alignment points to a guiding alignment surface with four guiding alignment points, which increases the alignment accuracy and success rate of battery pack placement-entrance, and realizes the horizontal positioning of the battery pack relative to the carrying mechanism. 
     Preferably, the third alignment mechanism is a sheet structure, and the top of the third alignment mechanism is turned outward toward the outside of the charging compartment, so as to form a guiding structure for the batteries on the inner side of the top of the third alignment mechanism, so as to realize the alignment adjustment in the width direction of the battery pack. 
     Preferably, the front carrying frame and the rear carrying frame are provided with reinforcing beams at an entry side away from the extension mechanism of the battery pack transfer device; both ends of the reinforcing beam are respectively connected to the front carrying frame and the rear carrying frame, or the reinforcing beam, the front carrying frame and the rear carrying frame are integrated, and the reinforcing beam is used for reinforcing the front carrying frame and the rear carrying frame at the same time, so as to make up for the reduction of the frame strength caused by the arranging the frame separately. 
     Preferably, the carrying mechanism is provided with a first carrying platform, the electrical connection mechanism is disposed on the first carrying platform, and the first carrying platform further is provided with a push-pull mechanism for driving the electrical connection mechanism; 
     after the battery pack is placed on the first carrying platform, the push-pull mechanism drives the electrical connection mechanism to be electrically connected with an electrical connector on the battery pack;   after the battery pack is lifted up relative to the first carrying platform, the push-pull mechanism drives the electrical connection mechanism to be disengaged from the electrical connector on the battery pack, so as to achieve the purpose of plugging and unplugging the electrical connector relative to the battery pack by setting the push-pull mechanism.   

     Preferably, the push-pull mechanism is a horizontal electric push-pull mechanism or an oblique guide push-pull mechanism. 
     Preferably, the carrying mechanism further comprises a front carrying frame, and the first carrying platform is arranged above the front carrying frame; 
     the push-pull mechanism is an oblique guide push-pull mechanism, and the oblique guide push-pull mechanism comprises a mounting seat, the mounting seat is formed on the outer surface of the housing of the electrical connection mechanism, and the mounting seat is connected to the first carrying platform by means of a slide rail device, and connected with the front carrying frame through an orientation device, the sliding rail device cooperates with the orientation device so that the electrical connection mechanism can move back and forth, so that the electrical connection mechanism can be electrically connected with or separated from the electrical connector on the battery pack. With this structure, the purpose of the electrical connection mechanism being automatically electrically connected to or disengaged from the electrical connector on the battery pack can be achieved when the battery pack is taken and placed on the carrying mechanism. 
     Preferably, the slide rail device comprises vertical plates arranged on both sides of the first carrying platform, and slide rails or pulleys arranged on both sides of the mounting seat, and corresponding positions on the vertical plate are provided with slide grooves of the horizontal direction matched with the slide rails or pulleys, so that the mounting seat can move in the horizontal direction relative to the first carrying platform, through the matching of the slide rail or the pulley with the slide groove, the purpose can be realized that the mounting seat can move in the horizontal direction relative to the first carrying platform. 
     Preferably, the orientation device comprises a guide plate with an oblique groove installed on the mounting seat, and a limiting rod installed on the front carrying frame, the oblique groove is inclined downward along the direction of the electrical connection mechanism towards the battery pack, and the limiting rod penetrates through the oblique groove, so that the first carrying platform moves downward when the battery is placed on it, and driving the electrical connection mechanism through the orientation device and the sliding device, to move in a direction close to the battery pack to be electrically connected with the electrical connector on the battery pack. And the battery pack moves upward when the battery pack on the first carrying platform is lifted up, and driving the electrical connection mechanism through the orienting device and the sliding device, to move in a direction away from the battery pack so as to disengage from the electrical connector on the battery pack. 
     The above structure guides the movement direction of the mounting seat relative to the front carrying frame through the oblique grooves arranged obliquely, so that after the battery pack is placed on the first carrying platform, the first carrying platform is driven by the gravity exerted by the battery pack on the first carrying platform to move downward with the mounting seat, under the guidance of the oblique groove, the mounting seat is moved horizontally relative to the front carrying frame and the first carrying platform, and the electrical connector is driven to plug and unplug relative to the battery pack, so as to realize the purpose of connecting or detaching the electrical connector. 
     Preferably, the carrying mechanism further comprises an elastic device, the elastic device is arranged between the front carrying frame and the first carrying platform, and the elastic device is used to be configured that the first carrying platform is elastically supported by the front carrying frame. 
     With the above structure, when the battery pack is detached from the first carrying platform, the elastic device can make the first carrying platform rebound back to the original position, so as to achieve the purpose of moving the first carrying platform upwards when the battery pack is taken out through the elastic device. 
     Preferably, the carrying mechanism further comprises a guide device, the guide device is used for guiding the elastic device to elastically move in a vertical direction, so that the first carrying platform is elastically supported in the vertical direction by the front carrying frame, so as to ensure the first carrying platform can move vertically relative to the front carrying frame. 
     Preferably, the guide device comprises a guide rod arranged under the first carrying platform, and a guide hole arranged on the front carrying frame, the guide hole is correspondingly arranged with the guide rod, and the guide hole is used for inserting the guide rod, and the elastic device is sleeved on the guide rod arranged between the guide hole and the first carrying platform. 
     With the above structure, through the precise fit between the guide hole and the guide rod, the first carrying platform can only move relative to the front carrying frame in the vertical direction. 
     Preferably, the guide device further comprises a limiting member, which is arranged on the lower end of the guide rod and used to abut against the lower edge of the guide hole when the elastic device drives the first carrying platform to reset upward. 
     The limiting member is used to limit the position limit of the upward reset of the first carrying platform, so as to prevent the first carrying platform and the guide rod connected thereto from moving upward and out of the guide hole. 
     Preferably, the elastic device is a compression spring, so as to use the elastic force generated when the compression spring is compressed to drive the first carrying platform to reset upward when the battery pack is separated from the first carrying platform. 
     A charging frame, comprising:
     the charging compartment as described above;   a charging machine, the charging machine is electrically connected to the electrical connection mechanism, so as to supply power to the battery pack through the charging machine, after the battery pack transfer device places the battery pack in the charging compartment to achieve the purpose of charging. The charging compartment with this structure can reduce the space occupied by the charging frame in the vertical direction, or increase the number of charging compartments without increasing the space occupied by the charging frame.   

     Preferably, the charging frame further comprises an emergency compartment and an emergency push-out mechanism. 
     The emergency compartment can quickly remove the battery pack from a base frame through a transfer frame of the emergency push-out mechanism, so as to prevent the risk of burning or even explosion of the battery pack with thermally runaway from spreading to the battery packs on other charging compartments in the charging frame. Through setting the battery pack transfer frame corresponding to the battery pack, it can quickly respond and remove the thermally runaway battery pack in time, reduce the risk in the shortest time, and improve the overall safety factor of the charging frame. 
     Preferably, the charging frame comprises a plurality of the charging compartments, the plurality of the charging compartments are distributed in a matrix, and the frameless spaces of the plurality of the charging compartments in the same vertical direction are communicated with each other along the vertical direction, in order to facilitate the extension mechanism of the battery pack transfer device to move downward after placing the battery pack and quickly withdraw from the corresponding charging compartment area. 
     Preferably, the charging frame further comprises a fixing column extending in a vertical direction, and the carrying mechanisms of the plurality of charging compartments are respectively connected to the fixing column, so as to improve the overall strength of the charging frame. 
     Preferably, the connection point between the carrying mechanism and the fixing column is provided with a reinforced plate structure, so as to effectively improve the structural rigidity of the charging frame along the vertical direction. 
     A battery swap station or an energy storage station, which comprises the charging frame as described above. 
     The charging compartment of the battery swap station or energy storage station is provided with a frameless space on the carrying mechanism for the extension mechanism of the battery pack transfer device to enter, so as to avoid the battery pack transfer device from interfering with the carrying mechanism when placing or taking out the battery pack relative to the carrying mechanism, or save the space reserved for avoiding the extension and retraction of the extension mechanism of the battery pack transfer device, and reduce the space occupied by the charging compartment from the height, and also simplify the structure of the charging compartment and the process flow of the battery pack transfer device for taking out and placing battery packs, so as to achieve the purpose of reducing cost. 
     Preferably, the carrying mechanism of the charging compartment comprises a front carrying frame and a rear carrying frame, the front carrying frame and the rear carrying frame jointly carry the battery pack, and the frameless space is formed between the front carrying frame and the rear carrying frame, and the electrical connection mechanism is arranged on the front carrying frame; the front carrying frame and the rear carrying frame are provided with reinforcing beams at the entry side away from the extension mechanism of the battery pack transfer device, and two ends of the reinforcing beams are respectively connected to the front carrying frame and the rear carrying frame, the reinforcing beam is arranged on the inner wall of the battery swap station or the inner wall of the energy storage station. 
     By directly fixing the carrying mechanism of the charging compartment to the frame structure of the battery swap station or the energy storage station, the structural strength of the carrying mechanism is ensured, so that setting the frameless space on the carrying mechanism will not affect the ability of the carrying mechanism to carry battery packs. 
     The positive and progressive effects of this application are: 
     In the charging compartment, the charging frame comprising the same, the battery swap station and the energy storage station, the charging compartment is provided with a frameless space on the carrying mechanism for the extension mechanism of the battery pack transfer device to enter, so as to avoid the battery pack transfer device from interfering with the carrying mechanism when placing or taking out the battery pack relative to the carrying mechanism, and also simplify the structure of the charging compartment and the process flow of the battery pack transfer device for taking out and placing battery packs, so as to achieve the purpose of reducing cost. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a schematic structural diagram of a charging compartment according to an embodiment of the present application. 
         FIG.  2    is a schematic structural diagram of a carrying mechanism according to an embodiment of the application. 
         FIG.  3    is a schematic structural diagram of a first alignment mechanism according to an embodiment of the present application. 
         FIG.  4    is a partial enlarged view of part A in  FIG.  1   . 
         FIG.  5    is a partial enlarged view of part B in  FIG.  1   . 
         FIG.  6    is a schematic structural diagram of a first carrying platform according to an embodiment of the present application. 
         FIG.  7    is a schematic structural diagram of a mounting seat according to an embodiment of the present application. 
         FIG.  8    is a schematic diagram of the combined state of the first carrying platform and the mounting seat according to an embodiment of the present application. 
         FIG.  9    is a schematic diagram of a motion state of an orientation device according to an embodiment of the present application. 
         FIG.  10    is a schematic structural diagram of a charging frame according to an embodiment of the present application. 
         FIG.  11    is a schematic structural diagram of a battery pack transfer frame of an emergency push-out mechanism according to an embodiment of the application. 
         FIG.  12    is a schematic diagram of a partial internal structure of an energy storage station according to an embodiment of the present application. 
     
    
    
     DESCRIPTION OF REFERENCE NUMBERS 
     charging frame  100 ; charging compartment  10 ; carrying mechanism  1 , frameless space  1   a ; front carrying frame  111 ; rear carrying frame  112 ; reinforcing beam  113 ; first carrying platform  12 , buffer pad  121 , opening  122 ; mounting seat  131 ; slide rail device  132 , vertical plate  1321 , pulley  1322 , slide groove  1323 ; orientation device  133 , guide plate  1331 , oblique groove  1331   a , limiting rod  1332 ; elastic device  14 ; guide device  15 , guide rod  151 , guide hole  152 , limiting member  153 ; first alignment mechanism  16 , fork portion  161 , clamping groove  162 ; third alignment mechanism  17 ; electric connection mechanism  2 ; battery pack  30 , second alignment mechanism  301 ; emergency compartment  50 ; emergency push-out mechanism  60 ; base frame  603  , battery pack transfer frame  602  , roller  603  ; fixing column  70  . 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The present application is further described below by way of examples, but the present application is not limited to the scope of the described embodiments. 
     The present application provides a charging frame  100 , which is used for placing the battery pack  30  by a battery pack transfer device, the charging frame  100  comprises a carrying mechanism  1  and an electric connection mechanism  2 . Wherein, the carrying mechanism  1  realizes the purpose of carrying the battery pack  30  by means of the carrying frame. As shown in  FIG.  1    and  FIG.  2   , the carrying mechanism  1  is provided with a frameless space  1   a  allowing an extension mechanism of the battery pack transfer device to enter when the battery pack transfer device places the battery pack  30  in the carrying mechanism  1 ; the electrical connection mechanism  2  is arranged on the carrying mechanism  1 , and the electric connection mechanism  2  is used to electrically connect with the battery pack  30  after the battery pack  30  is placed on the carrying mechanism  1 , so as to achieve the purpose of charging the battery pack  30  . 
     Specifically, the extension mechanism of the battery pack transfer device is usually a plug plate arranged on the lower surface of the battery pack  30 , after such extension mechanism transports the battery pack  30  and places it down on the carrying mechanism  1 , the extension mechanism can continue to move down to quickly withdraw from the charging frame  100  without interfering with other parts of the charging frame  100 . Therefore, the charging compartment  10  is provided with a frameless space  1   a  on the carrying mechanism  1  for the extension mechanism of the battery pack transfer device to enter, so as to avoid the battery pack transfer device from interfering with the carrying mechanism  1  when placing or taking out the battery pack  30  relative to the carrying mechanism  1 , and at the same time, the structure of the charging compartment  10  can be simplified. On the other hand, the charging compartment  10  is provided with a frameless space  1   a  on the carrying mechanism  1  for the extension mechanism of the battery pack transfer device to enter, which can save the space reserved for avoiding the extension and retraction of the extension mechanism of the battery pack transfer device under the battery pack, and reduces the space occupied by the charging compartment from the height. 
     That is to say, the extension mechanism of the battery pack transfer device only needs to continuously move downwards, and the two steps of placing the battery pack  30  on the carrying frame and withdrawing from the charging frame  100  can be realized continuously. On the contrary, the extension mechanism of the battery pack transfer device also only needs to move upward continuously, to continuously realize two steps of entering the charging compartment  10  and taking out the battery pack  30  from the carrying frame, thus effectively simplifying the process steps of picking and placing the battery pack  30 . 
     Taking this embodiment as an example, the carrying frame of the carrying mechanism  1  may specifically comprise a front carrying frame  111  and a rear carrying frame  112 , and the front carrying frame  111  and the rear carrying frame  112  are distributed at both ends of the battery pack  30  to jointly carry the battery pack.  30 . The above-mentioned frameless space  1   a  is formed in the gap formed between the front carrying frame  111  and the rear carrying frame  112 , and the electric connection mechanism  2  is arranged on the front carrying frame  111  to form the frameless space  1   a  on the carrying mechanism  1  by means of separately arranging the frames. 
     Wherein, as shown in  FIGS.  2 -  4   , a first alignment mechanism  16  is respectively arranged on the left and right sides of the front carrying frame  111 , and a second alignment mechanism  301  is arranged on the side of the battery pack  30  at the position corresponding to the first alignment mechanism  16 . When the battery pack transfer device places the battery pack  30  on the carrying mechanism  1  from top to bottom, the first alignment mechanism  16  and the second alignment mechanism  301  on the battery pack  30  match with each other, so that the purpose of the positioning on the placement of the battery pack  30  is placed on the carrying mechanism  1  is realized. 
     In this embodiment, as shown in  FIG.  3   , the first alignment mechanism  16  is a guide fork, and the second alignment mechanism  301  is an alignment block, and the alignment block is arranged to be matched and positioned in a clamping groove  162  between two fork portions  161  of the guide fork, so that the horizontal displacement of the second alignment mechanism  301  is limited by the two fork portions  161 , so as to achieve the purpose of positioning the battery pack  30  relative to the carrying mechanism  1 . Wherein, for the fork portion  161  of the guide fork, the top of the fork portion  161  can preferably have an inclined surface or arc surface set toward the inner direction of the guide fork, to use the inclined surface or arc surface to form a guide structure, the position of the battery pack  30  can be guided by the way that the inner side surface of the fork portion  161  is in contact with the side surface of the battery pack  30 , which can effectively improve the accuracy and reliability of the position of the battery pack  30 . In addition, the top of the fork portion  161  of the guide fork can also be turned outward toward the outer side of the charging compartment  10  to form a guide structure for the battery pack  30  on the inner side of the fork portion  161 , so as to realize the alignment adjustment of the battery pack  30  in the width direction, and accurately position and place it on the carrying frame. 
     As shown in  FIG.  2   , the carrying mechanism  1  further comprises a third alignment mechanism  17 , the third alignment mechanism  17  is respectively disposed on the left and right sides of the rear carrying frame  112 , the third alignment mechanism  17  is also used for positioning of the battery pack  30 , so as to define the position the battery pack  30  to be placed between the two third alignment mechanisms  17  when the battery pack transfer device places the battery pack  30  on the carrying mechanism  1  from top to bottom. In this embodiment, the third alignment mechanism  17  is a vertically arranged sheet structure, and the top of the third alignment mechanism  17  is turned outward toward the outer side of the charging compartment  10 , so as to form a guiding structure for the battery pack  30  on the inside of the top of the third alignment mechanism  17 . Through the guiding alignment function of the third alignment mechanism  17 , the carrying mechanism  1  is increased from two guiding alignment points to a guiding alignment surface with four guiding alignment points, which increases the alignment accuracy and success rate of placement-entrance for the battery pack  30 , and realizes the horizontal positioning of the battery pack  30  relative to the carrying mechanism  1 . 
     In addition, the front carrying frame  111  and the rear carrying frame  112  are provided with reinforcing beams  113  at positions away from the entry side of the extension mechanism of the battery pack transfer device, that is, the reinforcing beams  113  are arranged on the rear side of the charging compartment  10 , and both ends of the reinforcing beams  113  are connected to the front carrying frame  111  and the rear carrying frame  112  respectively, so as to strengthen the front carrying frame  111  and the rear carrying frame  112  at the same time, so as to make up for the reduction of the frame strength caused by the separate setting of the frame structure, and at the same time, the location of the reinforcing beam  113  avoids occupying the location of the intermediate frameless space  1   a . In other embodiments, the reinforcing beam  113  can also be directly integrally formed with the front carrying frame  111  or the rear carrying frame  112  to improve the fixing effect. 
     As shown in  FIG.  5   - FIG.  8   , the carrying mechanism  1  is provided with a first carrying platform  12 , the first carrying platform  12  is arranged on the carrying frame, and the electrical connecting mechanism  2  is arranged on the first carrying platform  12 , and the electric connection mechanism  2  can be electrically connected with the battery pack  30  after it is placed on the first carrying platform  12 . By arranging the electric connection mechanism  2  directly on the first carrying platform  12  for placing the battery pack  30 , it can be ensured that the accuracy of the relative position between the electric connection mechanism  2  and the battery pack  30  when the battery pack  30  is placed on the first carrying platform  12 , so as to improve the reliability and accuracy of the connection between the electric connection mechanism  2  and the battery pack  30 . In this embodiment, the first carrying platform  12  is disposed above the front carrying frame  111 . 
     In addition, a push-pull mechanism for driving the electric connection mechanism  2  to be connected to the battery pack  30  is also provided on the first carrying platform12. When the battery pack  30  is placed on the first carrying platform  12 , the push-pull mechanism drives the electric connection mechanism  2  to be electrically connected to an electrical connector on the battery pack  30 ; and when the battery pack  30  is lifted up relative to the first carrying platform  12 , the push-pull mechanism drives the electrical connection mechanism to be disengaged from the electrical connector on the battery pack  30 , so as to achieve the purpose of plugging and unplugging the electrical connector relative to the battery pack  30  by setting the push-pull mechanism. 
     Wherein, a buffer pad  121  may also be provided on the upper surface of the first carrying platform  12 , and the buffer pad  121  is used for in direct contact with the battery pack  30  to reduce the impact generated when the battery pack  30  is placed on the first carrying platform  12 . Preferably, the surface of the buffer pad  121  in contact with the battery pack  30  may be a smooth surface to avoid horizontal friction between the buffer pad  121  and the battery pack  30 . 
     Wherein, the push-pull mechanism may be a horizontal electric push-pull mechanism, so as to realize the purpose of driving the electrical connector to achieve horizontal reciprocating motion and plug-in with respect to the battery pack  30  by inputting electric power to the horizontal driver connected to the electrical connector. In this embodiment, however, the push-pull mechanism is an obliquely guided push-pull mechanism, and the obliquely guided push-pull mechanism comprises a mounting seat  131  formed on the outer surface of the housing of the electric connection mechanism  2 , and the mounting seat  131  passes through the slide rail device  132  is connected to the first carrying platform  12  to achieve relative horizontal movement with the first carrying platform  12 , and to achieve relative oblique movement with the front carrying frame  111  through the orientation device  133  connected to the front carrying frame  111 . The slide rail device  132  and the orientation device  133  cooperate with each other, so that the electric connection mechanism  2  can move back and forth, so that after the battery pack  30  is placed on the first carrying platform  12 , the gravity exerted by the battery pack  30  on the first carrying platform  12  is used as the driving force, to achieve the purpose of electrically connecting or disconnecting between the electrical connection mechanism  2  and the electrical connector on the battery pack  30 . 
     Specifically, as shown in  FIGS.  6 - 8   , the slide rail device  132  comprises vertical plates  1321  arranged on both sides of the first carrying platform  12 , and pulleys  1322  arranged on surfaces of both sides of the mounting seat  131 , the vertical plates  1321  are provided with slide grooves  1323  which extend in the horizontal direction and match with the pulleys  1322  corresponding to the position of the pulley  1322 , so that the mounting seat  131  can move horizontally relative to the first carrying platform  12  by means of the slide groove  1323  after being mounted on the first carrying platform  12 . Of course, the structure of the slide rail device  132  is not limited to this, in other embodiments, the slide rails can also be provided at the corresponding positions of the pulleys  1322 , so that the slide rails can cooperate with the slide grooves  1323  on the vertical plate  1321 , similarly to achieve the purpose of moving in the horizontal direction. 
     As for the orientation device  133 , this embodiment also provides a relatively preferred implementation structure. As shown in  FIG.  5    and  FIG.  9   , the orientation device  133  may comprise a guide plate  1331  with an oblique groove  1331   a  mounted on the mounting seat  131 , and a horizontal limiting rod  1332  mounted on the front carrying frame  111 , the oblique groove  1331   a  is inclined downward along the direction of the electric connection mechanism  2  approaching the battery pack  30 , and the limiting rod  1332  passes through the above-mentioned oblique groove  1331   a , so that when the battery is placed on the first carrying platform  12 , the first carrying platform  12  uses the gravity of the battery pack  30  to move downward, and drives the mounting seat  131  to move downward, so that the mounting seat  131  moves downward obliquely along the extending direction of the oblique groove  1331   a , so as to drive the electric connection mechanism  2  to the direction close to the battery pack  30  move, to achieve the purpose of electrical connection with the electrical connector on the battery pack  30 . And when the battery pack  30  is lifted up on the first carrying platform  12 , the first carrying platform  12  moves upward, so that the mounting seat  131  moves in the opposite direction and drives the electric connection mechanism  2  to move away from the battery pack  30 , thereby realizing the purpose of separating the battery pack  30  from the electrical connector. Wherein, as shown in  FIG.  6   , an opening  122  is provided on the surface of the first carrying platform  12 , the opening  122  is used for the mounting seat  131  located above to extend its guide plate  1331  downward, so as to engage with the limiting rod  1332  by means of the shaft-hole fit fixed on the front carrying frame  111  through its oblique groove  1331   a . 
     In addition, the carrying mechanism  1  further comprises an elastic device  14 , the elastic device  14  is arranged at a position between the front carrying frame  111  and the first carrying platform  12 , and the elastic device  14  is used to be configured that the first carrying platform  12  is elastically supported by the front carrying frame  111 , so that when the battery pack  30  is detached from the first carrying platform  12 , the elastic device  14  can enable the first carrying platform  12  to rebound back to the original position, to achieve the purpose of moving the first carrying platform  12  upward through the elastic device  14  when the battery pack  30  is taken out. 
     In this embodiment, the number of the elastic devices  14  is three, and the three elastic devices  14  are distributed in a triangle shape, that is, they are arranged under the first carrying platform  12  along the way of a non-identical straight line, so as to effectively support the first carrying platform  12  elastically and avoid the first carrying platform  12  swinging left and right. Of course, if the number of the elastic devices  14  is more than three, the supporting capacity of the first carrying platform  12  will also be correspondingly improved. 
     The carrying mechanism  1  further comprises a guide device  15 , which is used to guide the elastic movement of the elastic device  14  in the vertical direction, so as to ensure the vertical movement of the first carrying platform  12  relative to the front carrying frame  111 , so that the front carrying frame  111  elastically supports the first carrying platform  12  in the vertical direction. Specifically, the guide device  15  comprises a guide rod  151  disposed below the first carrying platform  12 , and a guide hole  152  formed on the upper surface of the front carrying frame  111 , the guide hole  152  is disposed corresponding to the guide rod  151 , and the guide rod  151  is inserted into the guide hole  152 , so that the first carrying platform  12  can only move relative to the front carrying frame  111  in the vertical direction through the precision fit between the guide hole  152  and the guide rod  151 . At the same time, the elastic device  14  in this embodiment is a compression spring, which is sleeved on the guide rod  151  and located between the guide hole  152  and the first carrying platform  12 , so as to utilize the rebound force generated when the compression spring is compressed, when the battery pack  30  is separated from the first carrying platform  12 , the first carrying platform  12  is driven to reset upward. 
     In addition, the guide device  15  further comprises a limiting member  153 , the limiting member  153  is disposed at the lower end of the guide rod  151 , when the guide rod  151  is inserted into the guide hole  152 , the limiting member  153  is located below the front carrying frame  111 . When the elastic device  14  drives the first carrying platform  12  to reset upward, the limiting member  153  abuts against the lower edge of the guide hole  152  to limit the position limit of the first carrying platform  12  to reset upward, to prevent the first carrying platform  12  and the guide rod  151  connected with it from moving upward and separating from the guide hole  152 . 
     An in-position sensor (not shown in the figure) corresponding to the first carrying platform  12  may also be provided on the front carrying frame  111 , and the in-position sensor detects the relative position along the vertical direction between the first carrying platform  12  and the carrying frame, to determine whether the carrying frame carries the battery pack  30 . In this embodiment, the in-position sensor is specifically a proximity sensor, and its detection end is horizontally arranged below the first carrying platform  12  and located on one side of the first carrying platform  12 . When the first carrying platform  12  made of metal material moves downward due to the placement of the battery pack  30 , the first carrying platform  12  is close to the above-mentioned detection end, so that the in-position sensor can detect the approach data of the first carrying platform  12 , and accordingly to judge whether the carrying frame is provided with carried the battery pack  30  or not. 
     The present application also provides a charging frame  100 , which adopts the charging compartment  10  as described above, and also is provided with a charging machine (not shown in the figure) docked with the electric connection mechanism  2  of the charging compartment  10 , and the charging machine is used to supply power to the electric connection mechanism  2 , so that after the battery pack transfer device places the battery pack  30  in the charging compartment  10 , the battery pack  30  is powered by the charging machine to achieve the charging purpose. The charging compartment  10  with this structure can reduce the space occupied by the charging frame in the vertical direction, or increase the number of charging compartments  10  without increasing the space occupied by the charging frame  100 . 
     In addition, as shown in  FIG.  10   , the charging frame  100  further comprises an emergency compartment  50  and an emergency push-out mechanism  60  disposed in the emergency compartment  50 , the emergency compartment  50  is arranged below the charging compartment  10  , wherein the emergency push-out mechanism  60  comprises a base frame  603  and a battery pack transfer frame  602  arranged on the base frame  603 , wherein, as shown in  FIG.  11   , a moving mechanism (comprising rollers  603 ) is provided between the base frame  603  and the battery pack transfer frame  602 , the moving mechanism moves the battery pack transfer frame  602  on the base frame  603  along the side direction of the battery pack  30  by sliding or rolling . 
     The emergency compartment  50  can quickly remove the battery pack  30  from the base frame  603  through the transfer frame of the emergency push-out mechanism  60 , so as to avoid the risk of burning or even explosion of the thermally runaway battery pack  30  from affecting the battery pack  30  of other charging compartments  10  in the charging frame  100 . By setting the battery pack transfer frame  602  corresponding to the battery pack  30 , it is possible to quickly respond and remove the thermally runaway battery pack  30  in time, reducing risks in the shortest time, and improving the overall safety factor of the charging frame  100 . 
     At the same time, a plurality of charging compartments  10  are arranged above the emergency compartment  50 , and these charging compartments  10  are distributed in a matrix,  FIG.  10    shows the specific structure of the plurality of charging compartments  10  in the same vertical direction, the frameless spaces  1   a  of charging compartments  10  communicate with each other along the vertical direction, so that the extension mechanism of the battery pack transfer device can move downward and quickly withdraw from the corresponding area of the charging compartment  10  after placing the battery pack  30 . 
     In addition, both sides of the charging frame  100  further comprise fixing columns  70  extending in the vertical direction, and the carrying mechanisms  1  of the plurality of charging compartments  10  arranged in the same vertical direction are respectively connected to the fixing columns  70 , and the fixing columns  70  also extends downward and are connected to the base frame  603  of the emergency push-out mechanism  60  to improve the overall strength of the charging frame  100 . In this embodiment, since the carrying frame of the carrying mechanism  1  is divided into a front carrying frame  111  and a rear carrying frame  112 , the two fixing columns  70  arranged on both sides of the charging frame  100  are respectively fixed to the front carrying frame  111  and the rear carrying frame  112 . 
     In addition, a reinforcing plate structure should also be provided at the connection position between the carrying frame and the fixing column  70 . In this embodiment, it is a triangular reinforcing plate (not shown in the figure) arranged in the vertical direction, which connects the fixed column  70  and the front carrying frame  111  or the rear carrying frame  112  by welding, so as to effectively improve the structural rigidity of the charging frame  100  in the vertical direction. 
     The present application also provides an energy storage station, which adopts the charging frame  100  as described above. The charging compartment  10  of the energy storage station is provided with a frameless space  1   a  on the carrying mechanism  1  for the extension mechanism of the battery pack transfer device to enter, so as to avoid the battery pack transfer device from interfering with the carrying mechanism when placing or taking out the battery pack  30  relative to the carrying mechanism  1 , or save the space reserved for avoiding the extension and retraction of the extension mechanism of the battery pack transfer device, and reduce the space occupied by the battery swap station or the energy storage station from the height, and at the same time also simplify the structure of the charging compartment  10  and the process flow of picking and placing battery packs  30  by the pack transfer device, which can achieve the purpose of reducing cost. As shown in  FIG.  12   , which is a schematic diagram of a partial structure of the energy storage station, wherein the reinforcing beams  113  respectively connecting the front carrying frame  111  and the rear carrying frame  112  are fixed on the inner wall  1000   a  of the energy storage station, so that the carrying mechanism of the charging compartment  10  can be directly fixed with the frame structure of the energy storage station, thereby ensuring the structural strength of the carrying mechanism  1 , so as to ensure that the frameless space  1   a  on the carrying mechanism  1  will not affect the ability of the carrying mechanism  1  to carry the battery pack  30 . 
     Of course, in other embodiments, the charging frame  100  can also be applied to the battery swap station, since the structure of the charging area of the battery swap station and the energy storage station is very similar, the specific scheme of setting the charging frame  100  inside the battery swap station will not be described in detail. 
     Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.