Battery pack connecting device for vehicle

Abstract

The utility model discloses a vehicle battery pack connecting device, and belongs to the technical field of battery pack charging for battery swapping, the vehicle battery pack connecting device comprises a base, an electric connector and a trigger piece, when a battery pack is placed on the trigger piece, the trigger piece can be displaced under the pressure effect of the battery pack, and the electric connector is connected with the base; the electric connector is driven by the trigger piece to move downwards and move in the horizontal direction at the same time so that the electric connector can get close to the battery pack and be electrically connected with the battery pack. In the process that the battery pack is placed on the triggering piece till the battery pack is electrically connected with the electric connector, the placing stability of the battery pack on the triggering piece is high, and meanwhile due to the fact that the movement track of the electric connector is constant, the battery pack can be stably placed on the triggering piece. The electric connector certainly moves along the fixed movement track until the electric connector is electrically connected with the battery pack, the phenomenon of connection dislocation caused by movement deviation of the battery pack does not exist in the electric connection process of the battery pack, and the electric connection efficiency and the electric connection stability of the battery pack connecting device are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery pack charging for battery replacement, and particularly relates to a battery pack connecting device for vehicles. BACKGROUND

[0002] In daily life, more and more automobiles have been used, and the use of a large number of fuel vehicles not only increases the use of some non-renewable resources, but also pollutes the environment by exhaust emission. In the face of the serious situation of the imbalance between supply and demand of traditional energy and global climate warming, electric vehicles as a new energy transportation tool have emerged as the times require. Electric vehicles have the advantages of low noise, high energy utilization rate, no mobile exhaust emission, etc. With the entry of electric vehicles into the market, the cruising range has become an important influencing factor hindering the development of electric vehicles. By learning from the way of refueling for traditional vehicles, for electric vehicles, charging the battery pack with insufficient power or directly disassembling the battery pack with insufficient power to replace the battery pack with sufficient power has become the key research and development direction for increasing the cruising range of electric vehicles.

[0003] Due to the limitations of battery material technology and charging technology, it takes at least tens of minutes for a new energy vehicle to be fully charged after running out of power. For some new energy freight vehicles with large battery pack capacity, more charging time is required, which greatly affects the driving experience of users, especially for some commercial vehicle owners. Waiting for charging means reducing their working time, and the time required for replacing the battery pack is greatly reduced compared with the battery pack charging time. Therefore, the power supplement method of directly replacing the battery pack has become the first choice for more and more vehicle owners, especially commercial vehicle owners.

[0004] The disassembled battery pack with insufficient power needs to be transported to a charging position for charging. Each charging position is provided with an electrical connector. When the battery pack enters the charging position, the electrical connector needs to be connected with the battery pack to realize the charging of the battery pack. Therefore, a simple and practical electrical connector needs to be designed to realize automatic connection for charging after the battery pack enters the charging position. CONTENT OF THE UTILITY MODEL

[0005] The application provides a battery pack connecting device for vehicles to solve the technical problems of complex connection process of the battery pack and the charging connector, and difficult alignment of the charging structure and the battery pack in the prior art.

[0006] The technical scheme adopted by the application is as follows:

[0007] A battery pack connecting device for vehicles, which comprises a base, an electrical connector and a trigger piece. When the battery pack is placed on the trigger piece, the trigger piece will be displaced under the pressure of the battery pack. The electrical connector will be displaced downward and horizontally under the driving of the trigger piece to approach the battery pack and realize electrical connection with the battery pack.

[0008] By adopting the above technical solutions, when the battery pack is electrically connected by using the battery pack connecting device for vehicle of the application, the battery pack is first placed on the trigger piece, the trigger piece moves relative to the base under the gravity of the battery pack, and the trigger piece drives the electric connector to move towards the battery pack during the relative movement of the trigger piece and the base until the electric connector is connected with the battery pack and the battery pack is charged. In this process, only the battery pack needs to be placed on the trigger piece, and the gravity of the battery pack is used as a power source to drive the electric connector to move towards the battery pack through the trigger piece. In this way, on the one hand, the structure of the electric connector is simple and reliable, and the automation of the electric connection between the electric connector and the battery pack is realized, which greatly reduces the manual operation link. On the other hand, during the process of placing the battery pack on the trigger piece until the electric connection between the battery pack and the electric connector is realized, the stability of the battery pack placed on the trigger piece is high, and since the movement trajectory of the electric connector is constant, the electric connector will necessarily move along the fixed movement trajectory until the electric connection with the battery pack is realized under the premise of ensuring the stability of the battery pack placed on the trigger piece. The phenomenon of mispositioning between the electric connector and the battery pack is avoided, thereby avoiding the friction or jamming phenomenon between the electric connector and the battery pack, avoiding the wear of the electric connector and the battery pack, and improving the electric connection efficiency and stability of the battery pack connecting device.

[0009] Preferably, the electric connector is rotationally connected to the base through the linkage piece, and the electric connector is slidingly or rotationally connected to the trigger piece. When the trigger piece moves downward or overturns downward under the pressure of the battery pack, the electric connector moves downward with the trigger piece, and then the electric connector rotates relative to the base to move horizontally towards the battery pack.

[0010] By adopting the technical scheme, when the battery pack is electrically connected, the battery pack is placed behind the trigger piece, the trigger piece is displaced under the pressure of the battery pack, the connecting piece is also driven to move the electric connector towards the battery pack, that is, the connecting piece provides a transmission channel for the driving force between the trigger piece and the electric connector, the electric connector is displaced towards the battery pack by the connecting piece while the trigger piece moves relative to the base, and the electric connector is electrically connected with the battery pack; meanwhile, the electric connector is vertically displaced under the driving of the trigger piece and is horizontally displaced under the action of the connecting piece, that is, the trigger piece provides the driving force for the electric connector to displace in the vertical direction, the connecting piece provides the driving force for the electric connector to displace in the horizontal direction, the trigger piece and the connecting piece cooperate with each other to reduce the force exerted on the electric connector by the trigger piece and the connecting piece, and the structural design of the battery pack connecting device is optimized; in addition, the electric connector is slidingly or rotatably connected with the base, so that the friction between the electric connector and the base is reduced, the driving force required when the electric connector is moved by the connecting piece is reduced, and the smoothness of the electric connector is improved.

[0011] Preferably, the first end of the connecting piece is movably connected with the electric connector, the second end is movably connected with the base, and the connecting piece is obliquely arranged to form an included angle with the base; the electric connector is slidingly connected with the trigger piece, and when the trigger piece is moved downward or turned downward under the pressure of the battery pack, the electric connector moves downward with the trigger piece, and the included angle between the connecting piece and the base changes to drive the electric connector to move towards the battery pack in the horizontal direction.

[0012] By adopting the technical scheme, when the battery pack is electrically connected, the battery pack applies gravity to the trigger piece, the electric connector is displaced in the vertical direction together with the trigger piece, and the connecting piece movably connected with the electric connector and the base changes the included angle with the base to change the horizontal distance between the first end and the second end, so as to change the horizontal distance between the electric connector movably connected with the first end and the second end and the base, that is, the connecting piece drives the electric connector to displace in the horizontal direction relative to the base, so as to realize the approach of the electric connector to the battery pack in the horizontal direction.

[0013] Preferably, the trigger piece is provided with a first trigger part on the side close to the battery pack, the first trigger part is used for bearing the battery pack, the trigger piece is provided with a first connecting part connected with the first trigger part on the side away from the battery pack, and the first connecting part is slidingly or rotatably connected with the base.

[0014] By adopting the technical scheme, on one hand, the first trigger part can provide a separate bearing position for the battery pack, and the trigger piece can bear the battery pack more stably; on the other hand, by setting the first connecting part in sliding or rotating connection with the base, the relative movement in the sliding or rotating connection can reduce the frictional resistance of the trigger piece and the base in the relative movement, so that the relative movement of the trigger piece and the base is more smooth, thereby increasing the real-time performance of the relative movement of the trigger piece and the base under the pressure of the battery pack, and reducing the possibility of the occurrence of the jamming phenomenon caused by the large relative movement resistance between the trigger piece and the base. In addition, the first trigger part and the first connecting part are connected with each other and independently work, which ensures the independence of the battery pack bearing position and improves the smoothness of the relative movement of the trigger piece and the base, and reduces the possibility of the interference of the battery pack with the working process of other components of the battery pack connecting device, which is helpful for optimizing the structural design of the battery pack connecting device.

[0015] Preferably, the trigger piece further has a hollow region between the first connecting part and the first trigger part to accommodate the electric connector, and the two sides of the hollow region have enclosing parts connected with the first connecting part and the first trigger part respectively, and the two enclosing parts on the two sides of the hollow region are respectively provided with a first guide sliding block or a first guide sliding groove, the electric connector is correspondingly provided with a first guide sliding groove matched with the first guide sliding block or a first guide sliding block matched with the first guide sliding groove, and the first guide sliding groove extends in the direction close to or away from the battery pack.

[0016] By adopting the technical scheme, the hollow region provides a space for accommodating the electric connector, so that the electric connector and the trigger piece overlap in the vertical direction, which is helpful for optimizing the structural design of the battery pack connecting device. On the other hand, the hollow region provides a space for the movement of the electric connector, so that the electric connector does not interfere with the remaining components of the battery pack connecting device during the movement, which is helpful for improving the smoothness of the movement of the electric connector. In addition, the enclosing part connects the first trigger part and the first connecting part, so that the first connecting part moves relative to the base when the first trigger part moves under the pressure of the battery pack, and the electric connector moves relative to the enclosing part through the first guide sliding block and the first guide sliding groove, which reduces the frictional resistance of the relative movement of the electric connector and the trigger piece. At the same time, the first guide sliding block and the first guide sliding groove provide a guide for the horizontal movement of the electric connector, so that the electric connector moves along the extension direction of the first guide sliding groove until the electric connector is connected with the battery pack, which avoids the misalignment of the electric connector and the battery pack caused by the movement of the electric connector, and improves the connection accuracy of the electric connector and the battery pack.

[0017] Preferably, the enclosure is provided with an extension part having a first fold edge extending downward from a side of the enclosure close to the hollow region and a second fold edge extending from the first fold edge to the hollow region, and the first guide sliding groove or the first guide sliding block is arranged on the second fold edge.

[0018] By adopting the above technical solution, the first guide sliding block or the first guide sliding groove is arranged on the second fold edge of the extension part including the first fold edge and the second fold edge, so that the electric connector and the first guide sliding block or the first guide sliding groove share the space of the hollow region, the space outside the hollow region is reduced, and the interference of the electric connector with other components during movement is further reduced. In addition, the overall position of the extension part is lower than that of the enclosure, and the first guide sliding block or the first guide sliding groove is arranged on the second fold edge of the extension part, so that the enclosure and the first guide sliding block or the first guide sliding groove overlap at least partially in the vertical space, the space utilization efficiency is improved, and the miniaturization of the battery pack connecting device is facilitated.

[0019] Preferably, the first connecting part is slidingly connected with the base, and the first connecting part is provided with a second guide sliding block or a second guide sliding groove on a side away from the first trigger part or on both ends perpendicular to the horizontal movement direction of the electric connector. The base is correspondingly provided with a second guide sliding groove matched with the second guide sliding block or a second guide sliding block matched with the second guide sliding groove. The second guide sliding groove extends in the vertical direction, so that the first trigger part can move downward relative to the base under the pressure of the battery pack. Alternatively, the first connecting part is rotatably connected with the base, and the first connecting part is provided with a rotating shaft connected with the base at both ends perpendicular to the horizontal movement direction of the electric connector, so that the first trigger part can be flipped downward relative to the base under the pressure of the battery pack.

[0020] By adopting the technical scheme, the sliding fit of the second guide sliding block and the second guide sliding groove is adopted to realize the sliding fit of the first connecting part and the base. On the one hand, the relative sliding of the first connecting part and the base helps to reduce the frictional resistance when the first connecting part and the base relatively move, and improve the smoothness of the movement of the first connecting part under the driving of the first trigger part. On the other hand, the second guide sliding groove and the second guide sliding block also provide the movement guiding function for the first connecting part, so as to ensure that the first connecting part moves vertically according to the layout track of the second guide sliding groove, avoid the movement deviation of the first connecting part when the first connecting part relatively moves, and help to improve the alignment and connection precision of the electric connector and the battery pack. By arranging the two rotating shafts at the two ends of the horizontal movement direction of the electric connector to rotatably connect the first connecting part and the base, the first connecting part only needs a small working space to realize the rotation relative to the base due to the small space required during the rotation. Meanwhile, the two rotating shafts are respectively located at the two sides of the first connecting part, so that the connection of the first connecting part and the base is more stable, thereby improving the connection stability of the trigger part and the base, and providing a more stable placement platform for the battery pack.

[0021] Preferably, a first elastic reset member is further arranged and connected between the first trigger part and the base. When the battery pack cancels the pressure applied to the first trigger part, the trigger part is reset under the action of the first elastic reset member, and drives the electric connector to move upward and move in the horizontal direction away from the battery pack to separate from the battery pack.

[0022] By adopting the technical scheme, when the battery pack is fully charged, the battery pack is removed from the first trigger part. The pressure applied by the battery pack to the first trigger part is cancelled. The first elastic reset member drives the trigger part to reset by relying on the elasticity of the first elastic reset member, and drives the electric connector to move away from the battery pack and separate from the battery pack. The operation of manually or by other ways to remove the electric connector from the battery pack in the unloading process after the charging work of the battery pack is completed is saved. The complexity of the whole charging process of the battery pack is reduced, thereby improving the charging efficiency of the battery pack. In addition, after the charging process of one battery pack is completed, the trigger part is reset under the elastic action of the first elastic reset member. Before the charging work of the next battery pack is performed, the battery pack connecting device does not need to be reset. Each battery pack is sequentially charged through the battery pack connecting device, thereby improving the continuity of the assembly line type charging process of multiple battery packs through the battery pack connecting device.

[0023] Preferably, the first end of the linkage is fixed with the electric connector, the second end is movably connected with the base, and the linkage is obliquely arranged to form an included angle with the base; and the first end of the linkage is rotationally connected with the trigger, when the trigger is downwardly moved under the pressure of the battery pack, the first end of the linkage moves downwardly with the trigger, and the included angle between the linkage and the base changes to drive the electric connector to rotate and move towards the battery pack.

[0024] By adopting the above technical scheme, when the trigger moves downwardly under the pressure of the battery pack, since the first end of the linkage is rotationally connected with the trigger and the second end is movably connected with the base, to meet the downward displacement of the trigger, the first end of the linkage moves downwardly with the trigger to change the included angle between the linkage and the base, i.e. the first end rotates around the second end, and since the electric connector is fixed to the first end of the linkage, the electric connector rotates around the second end with the first end, thereby realizing the displacement in the horizontal direction and the vertical direction to approach the battery pack; that is, by arranging the linkage, the electric connector is provided with a mounting position and is driven to rotate around the second end to move towards the battery pack until the electric connector is electrically connected with the battery pack, and the linkage has a high degree of functional integration, which is helpful to optimize the structural design of the battery pack connecting device.

[0025] Preferably, the trigger is connected with the base through a connecting rod at one end close to the battery pack, the connecting rod is rotationally connected with the trigger and the base at two ends and is obliquely arranged to form an included angle with the base; the linkage comprises an obliquely arranged connecting plate and a first fixed plate extending upwardly perpendicularly to the connecting plate, two ends of the connecting plate are rotationally connected with the base and the trigger, and the first fixed plate is provided with the electric connector in the middle, two sides of the first fixed plate are connected with one end of the base away from the battery pack through second elastic return members, when the battery pack removes the pressure applied to the trigger, the linkage rotates back to position under the action of the second elastic return members and drives the trigger to return to position, the electric connector moves upwardly with the linkage and moves away from the battery pack in the horizontal direction.

[0026] By adopting the technical scheme, the connecting rod is rotatably connected with the trigger and the base, and the two ends of the connecting plate are rotatably connected with the base and the trigger, so that the connecting rod, the connecting plate, the trigger and the base jointly form a four-bar linkage mechanism. The trigger has small wear during movement under the pressure of the battery pack and synchronous rotation under the action of the connecting plate, and the connecting plate has a long movement range under the pressure of the trigger, so that the electric connector mounted on the mounting plate fixedly connected with the connecting plate also has a large stroke range, ensuring that the electric connector has a long enough movement trajectory under the driving action of the connecting member to realize electrical connection with the battery pack. In addition, the first fixed plate perpendicular to the connecting plate is arranged as the mounting platform of the electric connector, which provides a relatively stable mounting position for the electric connector and reduces the possibility of relative position deviation of the electric connector under the driving action of the connecting member, thereby ensuring the connection stability of the electric connector and the battery pack. Furthermore, the two sides of the first fixed plate are connected with the end of the base away from the battery pack through the second elastic reset member. When the battery pack is fully charged, the battery pack is removed from the trigger, the pressure of the battery pack on the trigger is removed, and the second elastic reset member drives the connecting member to reset by relying on the elasticity of the second elastic reset member, thereby driving the electric connector away from the battery pack and achieving separation from the battery pack. The operation of manually or by other means to remove the electric connector from the battery pack during the unloading process after the charging of the battery pack is completed, which helps to reduce the complexity of the whole charging process of the battery pack, thereby improving the charging efficiency of the battery pack. After the charging process of one battery pack is completed, the trigger resets under the elastic action of the second elastic reset member, and no reset operation is required for the battery pack connecting device before the charging of the next battery pack. Each battery pack is sequentially charged through the battery pack connecting device, thereby improving the continuity of the assembly line charging process of multiple battery packs through the battery pack connecting device. At the same time, since the electric connector is fixed to the first fixed plate and located on the side of the first fixed plate facing the battery pack, the electric connector will apply a force to the first fixed plate in the direction of the battery pack. Over a long period of time, the long-term action of the gravity of the electric connector may cause the connection between the first fixed plate and the connecting plate to be unstable. By arranging the second elastic reset member, the elastic force of the second elastic reset member applied to the first fixed plate is in the direction away from the battery pack, which can partially or even completely offset the force applied by the electric connector to the first fixed plate, thereby greatly improving the bearing pressure of the first fixed plate and helping to improve the connection stability of the first fixed plate and the connecting plate.

[0027] Preferably, the electric connector is fixed to the trigger, the trigger is slidably connected with the base and can move obliquely along the base, and when the trigger moves obliquely downward relative to the base under the pressure of the battery pack, the electric connector moves synchronously obliquely downward with the trigger and moves toward the battery pack.

[0028] By adopting the technical scheme, when the battery pack is placed on the trigger piece, the trigger piece slides relative to the base under the gravity of the battery pack and moves along the inclined direction, the relative position between the trigger piece and the battery pack in the vertical direction remains unchanged during the inclined movement of the trigger piece, but the relative position between the trigger piece and the battery pack in the horizontal direction changes, therefore, the relative movement between the trigger piece and the battery pack in the horizontal direction occurs during the inclined movement of the trigger piece, and the electric connector fixed to the trigger piece is driven to move relative to the battery pack in the horizontal direction synchronously, so that the electric connector moves relative to the battery pack in the horizontal direction towards the battery pack until the electric connector is electrically connected with the battery pack; since the electric connector is fixed to the trigger piece, the installation stability of the electric connector is high, and the electric connector can move along the preset track with the trigger piece under the pressure of the battery pack and realize the stable electrical connection with the battery pack.

[0029] Preferably, the trigger piece is provided with a second trigger part on the side close to the battery pack, the second trigger part is used for bearing the battery pack, the trigger piece is provided with a second connecting part connected with the second trigger part on the side away from the battery pack, the second connecting part is in sliding connection with the base, and the second trigger part and / or the second connecting part is provided with an upwardly extending second fixing plate at one end close to the second connecting part and / or one end close to the second trigger part, and the electric connector is mounted in the middle of the second fixing plate.

[0030] By adopting the technical scheme, on the one hand, the second trigger part can provide a separate bearing position for the battery pack, and the trigger piece can bear the battery pack more stably; on the other hand, by setting the second connecting part in sliding connection with the base, the relative movement mode of the sliding connection can reduce the frictional resistance of the trigger piece during the relative movement with the base, so that the relative movement of the trigger piece with the base is more smooth, thereby increasing the real-time performance of the relative movement of the trigger piece with the base under the pressure of the battery pack, and reducing the possibility of the jamming phenomenon caused by the large relative movement resistance between the trigger piece and the base; in addition, the second trigger part and the second connecting part are connected with each other and independently work, which ensures the independence of the battery pack bearing position and improves the smoothness of the relative movement of the trigger piece with the base, and reduces the possibility of the interference of the battery pack with the working process of other components of the battery pack connecting device, which is helpful to optimize the structural design of the battery pack connecting device; furthermore, by setting the second fixing plate, a relatively stable mounting platform is provided for the electric connector, and the risk of shaking of the electric connector during the movement is reduced.

[0031] Preferably, the second connecting part is provided with a third guide sliding block or a third guide sliding groove at both ends in a direction perpendicular to the movement direction of the electric connector towards the battery pack, and the base is correspondingly provided with a third guide sliding groove matched with the third guide sliding block or a third guide sliding block matched with the third guide sliding groove, and the third guide sliding groove is obliquely arranged and gradually extends downward from an end far away from the battery pack to an end close to the battery pack, so that the trigger piece can be obliquely moved downward relative to the base under the pressure of the battery pack.

[0032] By adopting the above technical scheme, the sliding cooperation of the third guide sliding block and the third guide sliding groove is adopted to realize the sliding cooperation of the second connecting part and the base. On the one hand, the relative sliding of the second connecting part and the base helps to reduce the frictional resistance when the second connecting part and the base move relative to each other, and improves the smoothness of the movement of the second connecting part under the driving of the second trigger part. On the other hand, the arrangement of the second guide sliding groove and the second guide sliding block also provides the movement guiding function for the second connecting part, ensures the oblique movement of the second connecting part according to the arrangement track of the second guide sliding groove, avoids the movement deviation of the second connecting part when moving relative to the base, and helps to improve the alignment and connection precision of the electric connector and the battery pack.

[0033] Preferably, the end of the base far away from the battery pack has an upwardly extending mounting plate, and the second fixed plate is connected to the mounting plate through a third elastic reset member at both sides corresponding to the electric connector. When the battery pack cancels the pressure applied to the trigger piece, the second fixed plate is reset under the action of the third elastic reset member and drives the trigger piece to move obliquely upward relative to the base, away from the battery pack, and disengage from the battery pack.

[0034] By adopting the technical scheme, when the battery pack is removed from the trigger after being fully charged, the pressure applied by the battery pack to the trigger is removed, the third elastic reset member drives the second fixed plate back to the original position by relying on the elasticity of the third elastic reset member, thereby driving the electric connector away from the battery pack to achieve separation from the battery pack and the trigger returns along the inclined direction, which saves the operation of removing the electric connector from the battery pack by manual or other means during the unloading process after the charging of the battery pack is completed, helps to reduce the complexity of the whole charging process of the battery pack, and thus improves the charging efficiency of the battery pack; after the charging process of one battery pack is completed, the trigger moves obliquely and returns under the elastic action of the third elastic reset member, and no reset operation is required for the battery pack connecting device before the charging of the next battery pack, each battery pack is sequentially charged through the battery pack connecting device, and the continuity of the assembly line type charging process of multiple battery packs through the battery pack connecting device is improved; meanwhile, since the electric connector is fixed to the second fixed plate and located on the side of the second fixed plate facing the battery pack, the electric connector will apply a force to the second fixed plate in the direction of the battery pack, and under the long-term action of the gravity of the electric connector, the connection between the second fixed plate and the second trigger part and / or the second connecting part may become unstable, and by arranging the third elastic reset member, the elastic force applied by the third elastic reset member to the second fixed plate is in the direction away from the battery pack, which can partially or even completely offset the force applied by the electric connector to the first fixed plate, thereby greatly improving the bearing pressure of the second fixed plate and helping to improve the connection stability of the second fixed plate and the second trigger part and / or the second connecting part.

[0035] Preferably, the mounting plate is further provided with a limiting piece extending from the mounting plate towards the battery pack, and an upwardly extending limiting plate is arranged at one end of the second connecting part away from the second trigger part, and the limiting plate and the limiting piece abut each other during the returning process of the second connecting part under the action of the third elastic reset member, so that the trigger returns to the original position.

[0036] By adopting the technical scheme, when the battery pack is removed from the trigger after being fully charged, the pressure applied by the battery pack to the trigger is removed, the third elastic reset member drives the second fixed plate back to the original position by relying on the elasticity of the third elastic reset member, thereby driving the electric connector away from the battery pack to achieve separation from the battery pack and the trigger returns along the inclined direction, which saves the operation of removing the electric connector from the battery pack by manual or other means during the unloading process after the charging of the battery pack is completed, helps to reduce the complexity of the whole charging process of the battery pack, and thus improves the charging efficiency of the battery pack; after the charging process of one battery pack is completed, the trigger moves obliquely and returns under the elastic action of the third elastic reset member, and no reset operation is required for the battery pack connecting device before the charging of the next battery pack, each battery pack is sequentially charged through the battery pack connecting device, and the continuity of the assembly line type charging process of multiple battery packs through the battery pack connecting device is improved; meanwhile, since the electric connector is fixed to the second fixed plate and located on the side of the second fixed plate facing the battery pack, the electric connector will apply a force to the second fixed plate in the direction of the battery pack, and under the long-term action of the gravity of the electric connector, the connection between the second fixed plate and the second trigger part and / or the second connecting part may become unstable, and by arranging the third elastic reset member, the elastic force applied by the third elastic reset member to the second fixed plate is in the direction away from the battery pack, which can partially or even completely offset the force applied by the electric connector to the first fixed plate, thereby greatly improving the bearing pressure of the second fixed plate and helping to improve the connection stability of the second fixed plate and the second trigger part and / or the second connecting part.

[0037] As a result of adopting the above technical scheme, the application has the following beneficial effects:

[0038] In the process of electrically connecting the battery pack by using the battery pack connecting device for vehicle of the application, the battery pack is first placed on the trigger piece, the trigger piece moves relative to the base under the gravity of the battery pack, and the trigger piece drives the electric connector to move towards the battery pack during the relative movement between the trigger piece and the base until the electric connector is connected with the battery pack and the battery pack is charged; in this process, only the battery pack needs to be placed on the trigger piece, the gravity of the battery pack is used as a power source and the electric connector is driven to move towards the battery pack through the trigger piece; in this way, on the one hand, the electric connector has a simple and reliable structure and realizes the automation of the electrical connection between the electric connector and the battery pack, greatly reducing the manual operation link; on the other hand, during the process of placing the battery pack on the trigger piece until the electrical connection between the battery pack and the electric connector is realized, the stability of the battery pack placed on the trigger piece is high, and at the same time, since the movement trajectory of the electric connector is constant, under the premise of ensuring the stability of the battery pack placed on the trigger piece, the electric connector will necessarily move along the fixed movement trajectory until the electrical connection with the battery pack is realized, avoiding the mispositioning phenomenon between the electric connector and the battery pack, thereby avoiding the friction or jamming phenomenon between the electric connector and the battery pack, avoiding the wear of the electric connector and the battery pack, and improving the electrical connection efficiency and stability of the battery pack connecting device. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application. In the drawings:

[0040] Figure 1 Structure diagram of the battery pack connecting device according to the first embodiment of the application Figure 1

[0041] Figure 2 Structure diagram of the battery pack connecting device according to the first embodiment of the application Figure 2

[0042] Figure 3 Structure diagram of the battery pack connecting device according to the second embodiment of the application Figure 1

[0043] Figure 4 Structure diagram of the battery pack connecting device according to the second embodiment of the application Figure 2

[0044] Figure 5 Structure diagram of the battery pack connecting device according to the third embodiment of the application Figure 1

[0045] Figure 6 ​​​​​Structure diagram of the battery pack connecting device according to the third embodiment of the present application Figure 2 ;

[0046] Figure 7 Structure diagram of the battery pack connecting device according to the fourth embodiment of the present application Figure 1 ;

[0047] Figure 8 Structure diagram of the battery pack connecting device according to the fourth embodiment of the present application Figure 2 ;

[0048] Figure 9 Structure diagram of the battery pack connecting device according to the first embodiment of the present application

[0049] Figure 10 Structure diagram of the battery pack connecting device according to the first embodiment of the present application

[0050] Figure 11 Structure diagram of the battery pack connecting device according to the first, second or third embodiment of the present application

[0051] Figure 12 Structure diagram of the trigger according to the second embodiment of the present application

[0052] Wherein:

[0053] 1 base, 11 mounting plate, 111 limiting piece, 12 second bending part;

[0054] 2 electric connector, 21 connecting head, 22 first bending part;

[0055] 3 trigger, 31 first trigger part, 32 first connecting part, 33 hollow area, 34 enclosing part, 341 extension part, 3411 first folding edge, 3412 second folding edge, 35 second trigger part, 36 second connecting part, 361 limiting plate, 37 second fixing plate;

[0056] 4 linkage, 41 first end, 42 second end, 43 connecting plate, 44 first fixing plate;

[0057] 51 first guide sliding block, 52 first guide sliding slot, 53 second guide sliding block, 54 second guide sliding slot, 55 third guide sliding block, 56 third guide sliding slot;

[0058] 61 first elastic reset piece, 62 second elastic reset piece, 63 third elastic reset piece;

[0059] 7 connecting rod;

[0060] 8 rotating shaft;

[0061] 9 first rotating through hole;

[0062] 10 second rotating through hole;

[0063] 110 first rotating insertion shaft;

[0064] 120 second rotating insertion shaft. DETAILED DESCRIPTION

[0065] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0066] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details and other implementations can be employed. In other instances, well-known methods have not been described in detail in order to avoid obscuring the present application. It will be appreciated that embodiments of the present application can be combined with one another, and features of the embodiments can be combined with one another, unless the context clearly dictates otherwise.

[0067] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0068] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0070] The application provides a battery pack connecting device for vehicle, as shown in the four embodiments, which comprises a base 1, an electric connector 2 and a trigger 3. When the battery pack is placed on the trigger 3, the trigger 3 will be displaced under the pressure of the battery pack, and the electric connector 2 will be displaced downward and horizontally under the driving of the trigger 3 to approach the battery pack and realize the electrical connection with the battery pack. Figures 1 to 8

[0071] When the battery pack is connected by the battery pack connecting device for vehicle, the battery pack is first placed on the trigger 3, and the trigger 3 is relatively moved with the base 1 under the gravity of the battery pack. The trigger 3 drives the electric connector 2 to move towards the battery pack during the relative movement with the base 1, until the electric connector 2 is connected with the battery pack and realizes the charging of the battery pack. In this process, only the battery pack needs to be placed on the trigger 3, and the gravity of the battery pack is used as the power source to drive the electric connector 2 to move towards the battery pack through the trigger 3. In this way, on the one hand, the structure of the electric connector is simple and reliable, and the automation of the electrical connection between the electric connector 2 and the battery pack is realized, which greatly reduces the manual operation link. On the other hand, during the process of placing the battery pack on the trigger 3 until the electrical connection with the electric connector 2 is realized, the stability of the battery pack placed on the trigger 3 is high, and since the movement track of the electric connector 2 is constant, the electric connector 2 will necessarily move along the fixed movement track until the electrical connection with the battery pack is realized under the premise of ensuring the stability of the battery pack placed on the trigger 3, thereby avoiding the mispositioning phenomenon between the electric connector 2 and the battery pack, avoiding the friction or jamming phenomenon between the electric connector 2 and the battery pack, avoiding the wear of the electric connector 2 and the battery pack, and improving the electrical connection efficiency and stability of the battery pack connecting device.

[0072] Specifically, the electric connector 2 comprises a connecting head 21, which is connected with the connecting head of the battery pack and communicates with the battery pack when the electric connector 2 is in the connected state, and the connecting head 21 extends horizontally towards the trigger 3.

[0073] The application does not limit the connection mode between the electric connector and the base. In the first, second and third embodiments, as shown in Figures 1 to 6 , Figure 11 the electric connector 2 is rotationally connected with the base 1 through a linkage 4, and the electric connector 2 is slidingly or rotationally connected with the trigger 3. When the trigger 3 is moved downward or turned downward under the pressure of the battery pack, the electric connector 2 is moved downward with the trigger 3, and then the electric connector 2 is rotated relative to the base 1 to move horizontally towards the battery pack.

[0074] ​When the battery pack is electrically connected, the battery pack is placed behind the trigger 3, and the trigger 3 will be displaced under the pressure of the battery pack, and the connecting member 4 will drive the electric connector 2 to move towards the battery pack, that is, the connecting member 4 is provided between the trigger 3 and the electric connector 2 to provide a transmission channel for the driving force, and the trigger 3 drives the electric connector 2 to move towards the battery pack through the connecting member 4 until the electric connection with the battery pack is achieved; at the same time, the electric connector 2 is vertically displaced under the driving action of the trigger 3 and is horizontally displaced under the action of the connecting member 4, that is, the trigger 3 provides a driving force for the electric connector 2 to move in the vertical direction, and the connecting member 4 provides a driving force for the electric connector 2 to move in the horizontal direction, and the trigger 3 and the connecting member 4 cooperate to reduce the force exerted on the electric connector 2 by the trigger 3 and the connecting member 4, and the structure design of the battery pack connecting device is optimized; in addition, the electric connector 2 is slidingly or rotatably connected to the base 1, which can reduce the friction between the electric connector 2 and the base 1, thereby reducing the driving force required when the electric connector 2 is moved by the connecting member 4 and improving the smoothness of the movement of the electric connector 2.

[0075] As a preferred embodiment of the first embodiment and the second embodiment, as shown in Figures 1 to 4 、 Figures 9 to 11 , the first end 41 of the connecting member 4 is movably connected to the electric connector 2, the second end 42 is movably connected to the base 1, and the connecting member 4 is inclinedly arranged to form an included angle with the base 1; the electric connector 2 is slidingly connected to the trigger 3, and when the trigger 3 is moved downward or turned downward under the pressure of the battery pack, the electric connector 2 moves downward with the trigger 3, and the included angle between the connecting member 4 and the base 1 changes to drive the electric connector 2 to move towards the battery pack in the horizontal direction.

[0076] When the battery pack is electrically connected, the battery pack applies a gravitational force to the trigger 3, and the electric connector 2 moves in the vertical direction with the trigger 3, and the connecting member 4 movably connected to the electric connector 2 and the base 1 must move relative to the base 1 to change the included angle between the connecting member 4 and the base 1 to meet the vertical displacement requirement of the electric connector 2, and the horizontal distance between the first end 41 and the second end 42 of the connecting member 4 changes, and then the horizontal distance between the electric connector 2 and the base 1 connected to the first end 41 and the second end 42 changes, that is, the electric connector 2 moves relative to the base 1 in the horizontal direction driven by the connecting member 4, thereby realizing the movement of the electric connector 2 towards the battery pack in the horizontal direction.

[0077] Preferably, as shown in Figures 1 to 4 、 Figures 9 to 11As shown, the electric connector 2 is provided with a first bending part 22, the base 1 is provided with a second bending part 12, the first end 41 and the first bending part 22 are provided with a first rotating through hole 9 in opposite positions, the second end 42 and the second bending part 12 are provided with a second rotating through hole 10 in opposite positions, the first rotating through hole 9 is provided with a first rotating plug shaft 110 to be inserted therein to movably connect the first end 41 and the first bending part 22, and the second rotating through hole 10 is provided with a second rotating plug shaft 120 to be inserted therein to movably connect the second end 42 and the second bending part 12.

[0078] Further, the linkage 4 is in a plate structure, the first bending part 22 and the second bending part 12 each include two pairs of first outer protruding plates and second outer protruding plates arranged in opposite positions, the first end 41 of the linkage 4 is attached to the first bending part 22, and the second end 42 of the linkage 4 is attached to the second bending part 12. In this way, after the first end 41 and the second end 42 of the linkage 4 are arranged in opposite positions with the first bending part 22 and the second bending part 12 respectively, no gap exists between the two first rotating through holes 9 and the two second rotating through holes 10, and after the linkage 4 is connected to the trigger 3 and the electric connector 2 through the first rotating plug shaft 110 and the second rotating plug shaft 120 respectively, the linkage 4 always remains attached to the first bending part 22 and the second bending part 12 during the rotation process, which helps to improve the rotation stability of the linkage 4.

[0079] As a preferred example under the present embodiment, as shown in the accompanying drawings, Figures 1 to 4 As shown, the trigger 3 is provided with a first trigger part 31 on the side close to the battery pack, the first trigger part 31 is used to carry the battery pack, the trigger 3 is provided with a first connecting part 32 connected to the first trigger part 31 on the side away from the battery pack, and the first connecting part 32 is in sliding connection or rotary connection with the base 1.

[0080] In this way, on the one hand, the first trigger part 31 can provide a separate carrying position for the battery pack, realizing more stable carrying of the battery pack by the trigger 3; on the other hand, by arranging the first connecting part 32 in sliding or rotary connection with the base 1, the relative movement mode of the sliding or rotary connection can reduce the frictional resistance suffered by the trigger 3 and the base 1 during the relative movement process, so that the relative movement of the trigger 3 and the base 1 is more smooth, thereby increasing the real-time performance of the relative movement of the trigger 3 and the base 1 under the pressure of the battery pack, and reducing the possibility of the occurrence of jamming phenomenon caused by the large relative movement resistance between the trigger 3 and the base 1; in addition, the first trigger part 31 and the first connecting part 32 are connected with each other and independently work, which ensures the independence of the battery pack carrying position while improving the smoothness of the relative movement of the trigger 3 and the base 1, and reduces the possibility of the interference of the battery pack with the working process of other components of the battery pack connecting device, which helps to optimize the structural design of the battery pack connecting device.

[0081] As a preferred mode of the present example, as shown in Figures 1 to 4 、 Figure 11 The trigger piece 3 also has a hollow area 33 between the first connecting part 32 and the first trigger part 31 to accommodate the electric connector 2, and the two sides of the hollow area 33 have enclosing parts 34 connected with the first connecting part 32 and the first trigger part 31 respectively, and the two enclosing parts 34 on both sides of the hollow area 33 are respectively provided with a first guide sliding block 51 or a first guide sliding groove 52, and the electric connector 2 is correspondingly provided with a first guide sliding groove 52 matched with the first guide sliding block 51 or a first guide sliding block 51 matched with the first guide sliding groove 52, and the first guide sliding groove 52 extends along the direction close to or away from the battery pack.

[0082] The hollow area 33 provides accommodation space for the electric connector 2, so that the electric connector 2 overlaps the trigger piece 3 in the vertical direction, which helps to optimize the space design of the battery pack connecting device; on the other hand, the hollow area 33 provides a clearance space for the movement of the electric connector 2 in the vertical direction, avoiding interference between the electric connector 2 and the rest of the components of the battery pack connecting device during movement, which helps to improve the smoothness of the movement of the electric connector 2; in addition, the enclosing part 34 serves to connect the first trigger part 31 and the first connecting part 32, and when the first trigger part 31 moves under the pressure of the battery pack, the first connecting part 32 is driven by the enclosing part 34 to slide or rotate relative to the base 1, and the electric connector 2 slides relative to the enclosing part 34 through the first guide sliding block 51 and the first guide sliding groove 52, which reduces the frictional resistance of the relative movement of the electric connector 2 and the trigger piece 3, and the first guide sliding block 51 and the first guide sliding groove 52 provide guidance for the movement of the electric connector 2 in the horizontal direction, so that the electric connector 2 moves along the extension direction of the first guide sliding groove 52 until it is electrically connected with the battery pack, avoiding the misalignment of the electric connector 2 with the battery pack due to movement deviation, and improving the connection accuracy of the electric connector 2 with the battery pack.

[0083] Preferably, in the second embodiment, as shown in Figure 3 、 Figure 4 、 Figure 12 The enclosing part 34 is provided with an extension part 341, the extension part 341 has a first fold edge 3411 extending downward from one side of the enclosing part 34 close to the hollow area 33, and a second fold edge 3412 extending from the first fold edge 3411 to the hollow area 33, and the second fold edge 3412 is provided with a first guide sliding groove 52 or a first guide sliding block 51.

[0084] By setting the extension 341 including the first fold 3411 and the second fold 3412, and setting the first guide slider 51 or the first guide sliding groove 52 on the second fold 3412, the space of the hollow area 33 is shared by the electric connector 2 and the first guide slider 51 or the first guide sliding groove 52, the space outside the hollow area 33 is reduced, and the interference of the remaining components during the movement of the electric connector 2 is further reduced. In addition, the overall position of the extension 341 is lower than the enclosing part 34, and the first guide slider 51 or the first guide sliding groove 52 is arranged on the second fold 3412 of the extension 341, so that the enclosing part 34 and the first guide slider 51 or the first guide sliding groove 52 overlap at least partially in the vertical space, improving the space utilization efficiency and helping to miniaturize the battery pack connecting device.

[0085] The present mode does not limit the setting position of the first guide sliding groove 52 or the first guide slider 51. In the first embodiment, the enclosing part 34 includes an upward mounting surface, and the first guide sliding groove 52 or the first guide slider 51 is arranged on the mounting surface.

[0086] The present application does not limit the relative movement mode of the first connecting part 32 and the base 1. In the first embodiment, as shown in Figure 1 、 Figure 2 , the first connecting part 32 and the base 1 are in sliding connection, and the first connecting part 32 is provided with a second guide slider 53 or a second guide sliding groove 54 on the side away from the first trigger part 31 or on both ends perpendicular to the horizontal movement direction of the electric connector 2, and the base 1 is correspondingly provided with a second guide sliding groove 54 matched with the second guide slider 53 or a second guide slider 53 matched with the second guide sliding groove 54. The second guide sliding groove 54 extends in the vertical direction, so that the first trigger part 31 can move downward relative to the base 1 under the pressure of the battery pack. The sliding cooperation of the second guide slider 53 and the second guide sliding groove 54 realizes the sliding cooperation of the first connecting part 32 and the base 1. On the one hand, the relative sliding of the first connecting part 32 and the base 1 helps to reduce the frictional resistance when the first connecting part 32 moves relative to the base 1, and improves the smoothness of the movement of the first connecting part 32 under the driving of the first trigger part 31. On the other hand, the arrangement of the second guide sliding groove 54 and the second guide slider 53 also provides the first connecting part 32 with a movement guide function, ensuring that the first connecting part 32 moves vertically according to the layout track of the second guide sliding groove 54, avoiding movement deviation of the first connecting part 32 relative to the base 1, and helping to improve the alignment and connection accuracy of the electric connector 2 and the battery pack.

[0087] In the second embodiment, as shown in Figure 3 、 Figure 4As shown, the first connecting part 32 is rotationally connected with the base 1, and the first connecting part 32 is provided with rotation shafts 8 connected with the base 1 at both ends in the horizontal moving direction of the electrical connector 2, so that the first trigger part 31 can be flipped downward relative to the base 1 under the pressure of the battery pack. By providing two rotation shafts 8 at both ends in the horizontal moving direction of the electrical connector 2 to rotationally connect the first connecting part 32 with the base 1, the first connecting part 32 only needs a small working space to realize rotation relative to the base 1, and the two rotation shafts 8 are respectively located at both sides of the first connecting part 32, so that the connection of the first connecting part 32 with the base 1 is more stable, thereby improving the connection stability of the trigger 3 with the base 1 and providing a more stable placement platform for the battery pack.

[0088] As a preferred embodiment of the first embodiment and the second embodiment, as shown in Figures 1 to 4 The first elastic reset member 61 is connected between the first trigger part 31 and the base 1, and when the battery pack removes the pressure applied to the first trigger part 31, the trigger 3 is reset under the action of the first elastic reset member 61 and drives the electrical connector 2 to move upward and in the horizontal direction away from the battery pack to move away from the battery pack.

[0089] When the battery pack is fully charged, the battery pack is removed from the first trigger part 31, the pressure applied by the battery pack to the first trigger part 31 is removed, the first elastic reset member 61 drives the trigger 3 to reset by relying on its own elasticity, and drives the electrical connector 2 away from the battery pack and realizes separation from the battery pack, which saves the operation of taking out the electrical connector 2 from the battery pack by artificial or other ways in the unloading process after the charging work of the battery pack is completed, helps to reduce the complexity of the whole process of charging the battery pack, and thereby improves the charging efficiency of the battery pack; in addition, after the charging process of one battery pack is completed, the trigger 3 is reset under the elastic action of the first elastic reset member 61, and no reset operation is needed for the battery pack connecting device before the charging work of the next battery pack, and each battery pack is sequentially charged through the battery pack connecting device, thereby improving the continuity of the assembly line charging process of multiple battery packs through the battery pack connecting device.

[0090] Preferably, the first elastic reset member 61 is a spring, and the base 1 has a bending part arranged towards the first trigger part 31 for the spring to be sleeved.

[0091] The bending part provided by the base 1 provides a mounting position for the spring, so that the spring is stably sleeved on the bending part and can be contracted or relaxed along the extension direction of the bending part under the extrusion of the first trigger part 31, improving the accuracy of the force direction of the spring on the first trigger part 31, thereby helping to improve the stability of the return process of the first trigger part 31. In addition, the bending part can also support and stop the first trigger part 31. When the electric connector 2 is connected with the battery pack, the bending part abuts against the first trigger part 31 to prevent the first trigger part 31 from moving continuously under the gravity of the battery pack, thereby ensuring the connection stability of the electric connector 2 and the battery pack.

[0092] As a preferred embodiment of the third implementation mode, as shown in Figure 5 、 Figure 6 , the first end 41 of the connecting member 4 is fixed with the electric connector 2, the second end 42 is movably connected with the base 1, and the connecting member 4 is obliquely arranged to form an included angle with the base 1. The first end 41 of the connecting member 4 is rotatably connected with the trigger member 3. When the trigger member 3 moves downward under the pressure of the battery pack, the first end 41 of the connecting member 4 moves downward with the trigger member 3, thereby changing the included angle between the connecting member 4 and the base 1 to drive the electric connector 2 to rotate and move towards the battery pack.

[0093] When the trigger member 3 moves downward under the pressure of the battery pack, since the first end 41 of the connecting member 4 is rotatably connected with the trigger member 3 and the second end 42 is movably connected with the base 1, in order to meet the downward displacement of the trigger member 3, the first end 41 of the connecting member 4 moves downward synchronously with the downward movement of the trigger member 3, thereby changing the included angle between the connecting member 4 and the base 1, i.e. the rotation of the first end 41 around the second end 42. Since the electric connector 2 is fixed to the first end 41 of the connecting member 4, the electric connector 2 rotates synchronously around the second end 42 with the rotation of the first end 41, thereby realizing the displacement in the horizontal direction and the vertical direction to approach the battery pack. That is, by arranging the connecting member 4, the mounting position of the electric connector 2 is provided, and the rotation of the electric connector 2 around the second end 42 is driven to move the electric connector 2 towards the battery pack until the electric connector 2 is connected with the battery pack. The connecting member 4 has a high degree of functional integration, which helps to optimize the structural design of the battery pack connecting device.

[0094] As a preferred example of the embodiment, as shown in Figure 5 、 Figure 6As shown, the trigger 3 is connected with the base 1 through a connecting rod 7 at one end close to the battery pack, the connecting rod 7 is rotatably connected with the trigger 3 and the base 1 at two ends respectively and is obliquely arranged to form an included angle with the base 1; the connecting member 4 includes an obliquely arranged connecting plate 43 and a first fixed plate 44 extending upward perpendicularly to the connecting plate 43, two ends of the connecting plate 43 are rotatably connected with the base 1 and the trigger 3 respectively, the middle of the first fixed plate 44 is provided with the electric connector 2, two sides of the first fixed plate 44 are connected with one end of the base 1 away from the battery pack through second elastic reset members 62, when the battery pack removes the pressure applied to the trigger 3, the connecting member 4 rotates back to the original position under the action of the second elastic reset members 62 and drives the trigger 3 to return to the original position, the electric connector 2 moves upward along with the connecting member 4 and moves in the horizontal direction away from the battery pack to be separated from the battery pack.

[0095] The connecting rod 7 is rotatably connected with the trigger piece 3 and the base 1 respectively, and the two ends of the connecting plate 43 are rotatably connected with the base 1 and the trigger piece 3 respectively, so that the connecting rod 7, the connecting plate 43, the trigger piece 3 and the base 1 together form a four-bar linkage mechanism. The trigger piece 3 has small wear during movement under the pressure of the battery pack and synchronous rotation under the action of the trigger piece 3, and the connecting plate 43 can have a long movement range under the pressure of the trigger piece 3, so that the electrical connector 2 mounted on the mounting plate 11 fixedly connected with the connecting plate 43 also has a large stroke range, ensuring that the electrical connector 2 has a long enough movement trajectory under the driving action of the linkage piece 4 to realize electrical connection with the battery pack. In addition, by arranging the first fixed plate 44 perpendicular to the connecting plate 43 as the mounting platform of the electrical connector 2, a relatively stable mounting position is provided for the electrical connector 2, reducing the possibility of positional deviation of the electrical connector 2 from the linkage piece 4 under the driving action of the linkage piece 4, thereby ensuring the connection stability of the electrical connector 2 and the battery pack. Furthermore, the two sides of the first fixed plate 44 are connected to the end of the base 1 away from the battery pack through the second elastic reset piece 62. When the battery pack is fully charged, the battery pack is removed from the trigger piece 3, the pressure of the battery pack on the trigger piece 3 is removed, and the second elastic reset piece 62 drives the linkage piece 4 back to the original position by relying on its own elasticity, thereby driving the electrical connector 2 away from the battery pack and achieving separation from the battery pack. This saves the operation of manually or by other means to remove the electrical connector 2 from the battery pack during the unloading process after the charging of the battery pack is completed, which helps to reduce the complexity of the whole charging process of the battery pack, thereby improving the charging efficiency of the battery pack. After the charging process of one battery pack is completed, the trigger piece 3 is reset under the elastic action of the second elastic reset piece 62, and no reset operation is required for the battery pack connecting device before the charging of the next battery pack. Each battery pack is sequentially charged through the battery pack connecting device, improving the continuity of the assembly line charging process of multiple battery packs through the battery pack connecting device. At the same time, since the electrical connector 2 is fixed to the first fixed plate 44 and located on the side of the first fixed plate 44 facing the battery pack, the electrical connector 2 will exert a force on the first fixed plate 44 in the direction of the battery pack. Over a long period of time, the connection between the first fixed plate 44 and the connecting plate 43 may become unstable under the long-term action of the gravity of the electrical connector 2. By arranging the second elastic reset piece 62, the elastic force of the second elastic reset piece 62 applied to the first fixed plate 44 is in the direction away from the battery pack, which can partially or even completely offset the force exerted by the electrical connector 2 on the first fixed plate 44, thereby greatly improving the bearing pressure of the first fixed plate 44 and helping to improve the connection stability of the first fixed plate 44 and the connecting plate 43.

[0096] Specifically, as Figure 5 、 Figure 6As shown, the battery pack connecting device has a separated state separated from the battery pack and a connected state electrically connected with the battery pack. When the battery pack is placed on the trigger 3, the trigger 3 simultaneously applies a vertical downward force to the connecting rod 7 and the linkage 4. The connecting rod 7 rotates downward around the end portion connected with the base 1 under the action of the trigger 3. The linkage 4 rotates downward around the end portion connected with the base 1 under the action of the trigger 3. The linkage 4 drives the first fixed plate 44 at the end portion thereof and the electric connector 2 mounted on the first fixed plate 44 to overturn in the rotating process. The electric connector 2 gradually approaches the battery pack in the overturning movement until the electric connector 2 is electrically connected with the battery pack, so as to realize the switching of the battery pack connecting device from the separated state to the connected state. When the battery pack is removed from the trigger 3, the gravity of the battery pack applied to the trigger 3 is removed. At this time, the second elastic reset member 62 reversely overturns the first fixed plate 44, so as to separate the electric connector 2 mounted on the first fixed plate 44 from the battery pack. The second elastic reset member 62 drives the linkage 4 to reversely rotate around the rotating connection point of the linkage 4 with the base 1 through the first fixed plate 44. The linkage 4 drives the trigger 3 to reversely move in the reversely rotating process. The connecting rod 7 reversely rotates around the rotating connection point of the connecting rod 7 with the base 1 synchronously with the reversely moving of the trigger 3, so as to realize the switching of the battery pack connecting device from the connected state to the separated state.

[0097] Preferably, the second elastic reset member 62 is a spring. When the battery pack connecting device is in the separated state, the included angle between the plane where the axis of the second elastic reset member 62 is located and the plane where the extension direction of the connecting plate 43 is located is ≤5°.

[0098] As a fourth embodiment of the present application, as shown in Figure 7 , Figure 8 The electric connector 2 is fixed on the trigger 3. The trigger 3 is slidingly connected with the base 1 and can move obliquely along the base 1. When the trigger 3 is inclined downward relative to the base 1 under the pressure of the battery pack, the electric connector 2 is synchronously inclined downward with the trigger 3 and moves towards the battery pack.

[0099] When the battery pack is placed on the trigger piece 3, the trigger piece 3 slides on the base 1 under the gravity of the battery pack and moves obliquely, and the relative position of the trigger piece 3 and the battery pack in the vertical direction remains unchanged during the oblique movement, but the relative position of the trigger piece 3 and the battery pack in the horizontal direction changes, so that the trigger piece 3 moves relative to the battery pack in the horizontal direction during the oblique movement and drives the electric connector 2 fixed on the trigger piece 3 to move relative to the battery pack in the horizontal direction synchronously, so that the electric connector 2 moves relative to the battery pack in the horizontal direction to the direction close to the battery pack until the electric connector 2 is electrically connected with the battery pack; since the electric connector 2 is fixed with the trigger piece 3, the installation stability of the electric connector 2 is high, and the electric connector 2 can move along the preset track with the trigger piece 3 under the pressure of the battery pack and stably realize the electrical connection with the battery pack.

[0100] As a preferred embodiment of the fourth implementation mode, as shown in Figure 7 、 Figure 8 , the trigger piece 3 is provided with a second trigger part 35 on the side close to the battery pack, the second trigger part 35 is used for bearing the battery pack, the trigger piece 3 is provided with a second connecting part 36 connected with the second trigger part 35 on the side away from the battery pack, the second connecting part 36 is in sliding connection with the base 1, and the second trigger part 35 and / or the second connecting part 36 has a second fixed plate 37 extending upward on the end close to the second connecting part 36 and / or the end close to the second trigger part 35, and the second fixed plate 37 is provided with the electric connector 2 installed in the middle.

[0101] In this way, on the one hand, the second trigger part 35 can provide a separate bearing position for the battery pack, and realize more stable bearing of the trigger piece 3 for the battery pack; on the other hand, by providing the second connecting part 36 in sliding connection with the base 1, the relative movement mode of the sliding connection can reduce the frictional resistance of the trigger piece 3 and the base 1 during the relative movement, so that the relative movement of the trigger piece 3 and the base 1 is more smooth, thereby increasing the real-time performance of the relative movement of the trigger piece 3 and the base 1 under the pressure of the battery pack, and reducing the possibility of the jamming phenomenon caused by the large relative movement resistance between the trigger piece 3 and the base 1; in addition, the second trigger part 35 and the second connecting part 36 are connected with each other and independently work, which ensures the independence of the battery pack bearing position and improves the smoothness of the relative movement of the trigger piece 3 and the base 1, and reduces the possibility of the battery pack interfering with the working process of other components of the battery pack connecting device, which is helpful to optimize the structural design of the battery pack connecting device; furthermore, by providing the first fixed plate 44, a relatively stable mounting platform is provided for the electric connector 2, which reduces the risk of shaking of the electric connector 2 during the movement.

[0102] As a preferred example of the embodiment, as shown in Figure 7 、 Figure 8As shown, the second connecting part 36 is provided with a third guide sliding block 55 or a third guide sliding groove 56 at both ends in the direction perpendicular to the moving direction of the electric connector 2 towards the battery pack, and the base 1 is correspondingly provided with the third guide sliding groove 56 matched with the third guide sliding block 55 or the third guide sliding block 55 matched with the third guide sliding groove 56, and the third guide sliding groove 56 is obliquely arranged and gradually extends downward from the end far away from the battery pack to the end close to the battery pack, so that the trigger 3 can be obliquely moved downward relative to the base 1 under the pressure of the battery pack.

[0103] The sliding cooperation between the third guide sliding block 55 and the third guide sliding groove 56 realizes the sliding cooperation between the second connecting part 36 and the base 1. On the one hand, the relative sliding between the second connecting part 36 and the base 1 helps to reduce the frictional resistance when the second connecting part 36 moves relative to the base 1, and improves the smoothness of the movement of the second connecting part 36 driven by the second trigger part 35. On the other hand, the arrangement of the second guide sliding groove 54 and the second guide sliding block 53 also provides the movement guiding function for the second connecting part 36, ensures the oblique movement of the second connecting part 36 according to the arrangement track of the second guide sliding groove 54, avoids the movement deviation of the second connecting part 36 when moving relative to the base 1, and helps to improve the alignment connection precision between the electric connector 2 and the battery pack.

[0104] As a preferred mode in this example, as shown in the drawings, Figure 8 As shown, the end of the base 1 far away from the battery pack has an upwardly extending mounting plate 11, and the second fixed plate 37 is connected to the mounting plate 11 through the third elastic reset member 63 at both sides corresponding to the electric connector 2. When the battery pack cancels the pressure applied to the trigger 3, the second fixed plate 37 is reset under the action of the third elastic reset member 63 and drives the trigger 3 to move obliquely upward relative to the base 1, moves away from the battery pack and is separated from the battery pack.

[0105] When the battery pack is removed from the trigger 3 after being fully charged, the pressure applied by the battery pack to the trigger 3 is removed, the third elastic reset member 63 drives the second fixed plate 37 to reset by relying on its own elasticity, thereby driving the electric connector 2 to move away from the battery pack to achieve separation from the battery pack and the trigger 3 to reset in a diagonal direction, which saves the operation of removing the electric connector 2 from the battery pack by manual or other means during the unloading process after the charging of the battery pack is completed, helps to reduce the complexity of the whole charging process of the battery pack, and thus improves the charging efficiency of the battery pack; after the charging process of one battery pack is completed, the trigger 3 moves diagonally and resets under the elastic action of the third elastic reset member 63, and no reset operation is required for the battery pack connecting device before the charging of the next battery pack, each battery pack is sequentially charged through the battery pack connecting device, and the continuity of the assembly line type charging process of multiple battery packs through the battery pack connecting device is improved; at the same time, since the electric connector 2 is fixed to the second fixed plate 37 and located on the side of the second fixed plate 37 facing the battery pack, the electric connector 2 will apply a force to the second fixed plate 37 in the direction of the battery pack, and over a long period of time, the connection between the second fixed plate 37 and the second trigger part 35 and / or the second connecting part 36 may be unstable under the long-term action of the gravity of the electric connector 2, and by arranging the third elastic reset member 63, the elastic force applied by the third elastic reset member 63 to the second fixed plate 37 is in the direction away from the battery pack, which can partially or even completely offset the force applied by the electric connector 2 to the first fixed plate 44, thereby greatly improving the bearing pressure of the second fixed plate 37 and helping to improve the connection stability of the second fixed plate 37 and the second trigger part 35 and / or the second connecting part 36.

[0106] Preferably, as shown in Figure 8 The mounting plate 11 is also provided with a limiting piece 111 extending from the mounting plate 11 in the direction facing the battery pack, and the second connecting part 36 is provided with an upwardly extending limiting plate 361 at the end away from the second trigger part 35, and during the resetting process of the second connecting part 36 under the action of the force of the third elastic reset member 63, the limiting plate 361 abuts against the limiting piece 111 to make the trigger 3 reset in place.

[0107] By adopting the above technical scheme, when the battery pack is removed from the trigger 3, the trigger 3 moves diagonally to reset under the elastic force of the third elastic reset member 63, and when the trigger 3 moves to the position where the limiting plate 361 abuts against the limiting piece 111, the trigger 3 stops moving under the abutting action of the limiting piece 111, that is, by arranging the limiting piece 111 and the limiting plate 361, the reset position of the trigger 3 under the elastic force of the third elastic reset member 63 is locked, which provides a guarantee for the reset accuracy of the trigger 3.

[0108] The places not mentioned in the application can be realized by using or referring to the existing technology.

[0109] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments.

[0110] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A battery pack connecting device for vehicle, characterized in that, it comprises a base, an electrical connector and a trigger, when the battery pack is placed on the trigger, the trigger is displaced by the pressure of the battery pack, and the electrical connector is displaced downward and horizontally to approach the battery pack and achieve electrical connection with the battery pack.

2. The battery pack connecting device for vehicle according to claim 1, characterized in that, the electrical connector is rotationally connected to the base through a linkage, and the electrical connector is slidingly or rotationally connected to the trigger, when the trigger is moved downward or flipped downward by the pressure of the battery pack, the electrical connector is moved downward with the trigger, and then the electrical connector is rotated relative to the base to move horizontally towards the battery pack.

3. The battery pack connecting device for vehicle according to claim 2, characterized in that, a first end of the linkage is movably connected to the electrical connector, a second end of the linkage is movably connected to the base, and the linkage is obliquely arranged to form an included angle with the base; the electrical connector is slidingly connected to the trigger, when the trigger is moved downward or flipped downward by the pressure of the battery pack, the electrical connector is moved downward with the trigger, and then the included angle between the linkage and the base changes to drive the electrical connector to move horizontally towards the battery pack.

4. The battery pack connecting device for vehicle according to claim 3, characterized in that, the trigger is provided with a first trigger part on a side close to the battery pack, the first trigger part is used to bear the battery pack, and a first connecting part connected to the first trigger part is provided on a side of the trigger away from the battery pack, the first connecting part is slidingly or rotationally connected to the base.

5. The battery pack connecting device for vehicle according to claim 4, characterized in that, the trigger further has a hollow area between the first connecting part and the first trigger part to accommodate the electrical connector, both sides of the hollow area are provided with enclosing parts connected to the first connecting part and the first trigger part respectively, both of the enclosing parts on both sides of the hollow area are provided with first guide sliding blocks or first guide sliding grooves, the electrical connector is correspondingly provided with first guide sliding grooves matched with the first guide sliding blocks or first guide sliding blocks matched with the first guide sliding grooves, and the first guide sliding grooves extend in a direction close to or away from the battery pack.

6. The battery pack connecting device for vehicle according to claim 5, characterized in that, the enclosing part is provided with an extension, the extension has a first fold edge extending downward from a side of the enclosing part close to the hollow area, and a second fold edge extending from the first fold edge to the hollow area, and the first guide sliding groove or the first guide sliding block is arranged on the second fold edge.

7. The battery pack connecting device for vehicle according to claim 4, characterized in that, The first connecting part is slidingly connected with the base, and the first connecting part is provided with a second guide sliding block or a second guide sliding groove at one side away from the first trigger part or at both ends perpendicular to the horizontal moving direction of the electric connector, and the base is correspondingly provided with a second guide sliding groove matched with the second guide sliding block or a second guide sliding block matched with the second guide sliding groove, and the second guide sliding groove extends along the vertical direction, so that the first trigger part can move downward relative to the base under the pressure of the battery pack; Or, the first connecting part is rotatably connected with the base, and the first connecting part is provided with a rotating shaft connected with the base at both ends perpendicular to the horizontal moving direction of the electric connector, so that the first trigger part can be flipped downward relative to the base under the pressure of the battery pack.

8. The battery pack connecting device for vehicle according to any one of claims 4-7, characterized in that, It further comprises a first elastic reset member connected between the first trigger part and the base, when the battery pack removes the pressure applied to the first trigger part, the trigger part resets under the action of the first elastic reset member and drives the electric connector to move upward and move away from the battery pack along the horizontal direction.

9. The battery pack connecting device for vehicle according to claim 2, characterized in that, The first end of the connecting member is fixed with the electric connector, the second end is movably connected with the base, and the connecting member is obliquely arranged to form an included angle with the base; and the first end of the connecting member is rotatably connected with the trigger part, when the trigger part moves downward under the pressure of the battery pack, the first end of the connecting member moves downward with the trigger part, and the included angle between the connecting member and the base changes to drive the electric connector to rotate and move towards the battery pack.

10. The battery pack connecting device for vehicle according to claim 9, characterized in that, The trigger part is connected with the base through a connecting rod at one end close to the battery pack, the connecting rod is rotatably connected with the trigger part and the base at both ends respectively, and the connecting rod is obliquely arranged to form an included angle with the base; the connecting member comprises an obliquely arranged connecting plate and a first fixed plate extending upward perpendicular to the connecting plate, both ends of the connecting plate are rotatably connected with the base and the trigger part respectively, and the middle of the first fixed plate is provided with the electric connector, both sides of the first fixed plate are connected with one end of the base away from the battery pack through a second elastic reset member, when the battery pack removes the pressure applied to the trigger part, the connecting member rotates back under the action of the second elastic reset member and drives the trigger part to reset and the electric connector to move upward along the horizontal direction away from the battery pack.

11. The battery pack connecting device for vehicle according to claim 1, characterized in that, The electric connector is fixed on the trigger, the trigger is in sliding connection with the base and can move obliquely along the base, when the trigger is tilted downward relative to the base under the pressure of the battery pack, the electric connector is tilted downward synchronously with the trigger and moves toward the battery pack.

12. The battery pack connecting device for vehicle according to claim 11, characterized in that, The trigger is provided with a second trigger part on the side close to the battery pack, the second trigger part is used for bearing the battery pack, the trigger is provided with a second connecting part connected with the second trigger part on the side away from the battery pack, the second connecting part is in sliding connection with the base, the second trigger part is provided with a second fixed plate extending upward on the end close to the second connecting part and / or the second connecting part is provided with a second fixed plate extending upward on the end close to the second trigger part, and the electric connector is installed in the middle of the second fixed plate.

13. The battery pack connecting device for vehicle according to claim 12, characterized in that, The second connecting part is provided with a third guide sliding block or a third guide sliding groove on both ends perpendicular to the moving direction of the electric connector toward the battery pack, the base is correspondingly provided with a third guide sliding groove matched with the third guide sliding block or a third guide sliding block matched with the third guide sliding groove, and the third guide sliding groove is obliquely arranged and gradually extends downward from the end away from the battery pack to the end close to the battery pack, so that the trigger can be tilted downward relative to the base under the pressure of the battery pack.

14. The battery pack connecting device for vehicle according to claim 12, characterized in that, The base is provided with an installation plate extending upward on the end away from the battery pack, the second fixed plate is connected with the installation plate through a third elastic reset member on both sides corresponding to the electric connector, when the pressure applied by the battery pack to the trigger is removed, the second fixed plate is reset under the action of the third elastic reset member and drives the trigger to move obliquely upward relative to the base, so that the trigger moves away from the battery pack and is separated from the battery pack.

15. The battery pack connecting device for vehicle according to claim 14, characterized in that, The installation plate is further provided with a limiting piece extending from the installation plate toward the battery pack, the second connecting part is provided with a limiting plate extending upward on the end away from the second trigger part, and the limiting plate abuts against the limiting piece when the second connecting part is reset under the action of the third elastic reset member, so that the trigger is reset to the position.

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