Battery box system, vehicle and vehicle battery replacement method

Abstract

The present invention relates to the field of vehicle battery replacement technology, and specifically, to a battery box system, a vehicle, and a vehicle battery replacement method. The battery box system includes a battery box assembly and a locking assembly. The battery box assembly includes a box body and a base. The locking assembly includes a base and a locking unit. The locking unit includes a driving module, a resistance block, a first connecting rod, a second connecting rod, and a limiting module. The battery box system includes a first state and a second state. In the first state, the resistance block is separated from the base, and the first connecting rod is separated from the limiting module. In the second state, the base is clamped between the resistance block and the base, and a reference normal is defined to be perpendicular to the surface of the base that is in contact with the resistance block. The axis point of the rotational connection between the first connecting rod and the resistance block is located on the reference normal line, and the axis point of the rotational connection between the first connecting rod and the second connecting rod is located on the side of the reference normal line close to the center of the base. The first connecting rod resists the limiting module, and the battery box system is thus stably installed on the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle battery replacement, and in particular to a battery box system, a vehicle and a vehicle battery replacement method. Background Art

[0002] Car battery swapping means that car owners can quickly replace the exhausted or insufficient power batteries of electric vehicles with fully charged batteries through professional battery swap stations, thereby quickly restoring the vehicle's endurance. In the process of replacing the battery box of a car, the last step is to fix the battery box, and the locking assembly needs to be used to firmly fix the battery box to the frame. As the energy source of electric vehicles, the stability of the battery box is directly related to the safety of the vehicle during driving. The locking assembly needs to be able to withstand vibration, impact and acceleration changes under various road conditions to ensure that the battery box will not accidentally fall or loosen.

[0003] The existing battery box locking assembly's lock tongue design often lacks the necessary buffer device. During vehicle driving, especially when encountering bumpy roads, the lock tongue directly bears the impact force, which can easily cause deformation and wear, thereby affecting the locking effect and shortening the service life. More seriously, long-term force may cause the lock tongue to break, causing the battery box to loosen, posing a major threat to driving safety. Therefore, optimizing the lock tongue structure and adding a buffer device to reduce impact and protect the lock tongue have become key measures to improve the battery box locking stability and vehicle driving safety. Summary of the invention

[0004] In order to solve the problem of low installation reliability of a battery box system, the present invention provides a battery box system, a vehicle and a vehicle battery replacement method.

[0005] In a first aspect, the present invention provides a battery box system, the battery box system comprising:

[0006] A battery box assembly, the battery box assembly comprising a box body and a base, the base being detachably connected to the box body;

[0007] A locking assembly, wherein the locking assembly comprises a base and a locking unit, wherein the locking unit is arranged in at least two groups relatively along a first direction; wherein the locking unit comprises: a driving module, which is detachably connected to the base; a resistance block, wherein the resistance block is detachably connected to the driving module, and wherein the driving module drives the resistance block to move; a first connecting rod, wherein one end of the first connecting rod is rotatably connected to the resistance block; a second connecting rod, wherein one end of the first connecting rod away from the resistance block is rotatably connected to one end of the second connecting rod, and one end of the second connecting rod away from the first connecting rod is rotatably connected to the base; a limiting module, wherein the limiting module is located on a side of the first connecting rod away from the center of the base, and wherein the limiting module limits the movement path of the first connecting rod;

[0008] The battery box system includes a first state and a second state; the first state includes: the abutment block is separated from the base, and the first connecting rod is separated from the limit module;

[0009] The second state includes: the base is clamped between the interference block and the base, a reference normal is defined to be perpendicular to the surface where the base and the interference block interfere with each other, the axis point where the first connecting rod is rotationally connected to the interference block is located on the reference normal line, the axis point where the first connecting rod is rotationally connected to the second connecting rod is located on the side of the reference normal line close to the center of the base, and the first connecting rod interferes with the limit module.

[0010] In some embodiments, a plurality of snap-in blocks are detachably connected to the base, the snap-in blocks are located on a side of the base facing away from the base support, the snap-in blocks correspond one-to-one with the locking units, the abutment blocks abut against the snap-in blocks in the second state, and the surfaces where the snap-in blocks abut against the abutment blocks are inclined toward the center of the base support.

[0011] In some embodiments, a mounting frame is detachably connected to the base support, the end of the second connecting rod away from the first connecting rod is rotatably connected to the mounting frame, and when the abutment block is in the first state, the side of the second connecting rod away from the center of the base support abuts against the mounting frame.

[0012] In some embodiments, the limiting module is detachably connected to the second connecting rod.

[0013] In some embodiments, the locking units are further arranged in two groups relatively along a second direction, and the first direction is perpendicular to the second direction.

[0014] In some embodiments, the driving module is a driving cylinder, a piston rod of the driving cylinder is rotatably connected to the abutment block, and one end of the driving cylinder away from the abutment block is rotatably connected to the base.

[0015] In a second aspect, the present invention provides a vehicle, the vehicle comprising any battery box system in the first aspect, the vehicle further comprising:

[0016] The vehicle body assembly includes a vehicle head, a frame and a driving unit, wherein the vehicle head is connected to the frame, the driving unit drives the vehicle head and the frame to travel, the base is detachably connected to the frame, the battery box assembly is locked on the frame by the locking assembly, and the vehicle head is located in a first direction of the frame.

[0017] In a third aspect, the present invention provides a vehicle battery replacement method, the vehicle battery replacement method is applied to the vehicle in the second aspect, and the vehicle battery replacement method includes:

[0018] The vehicle battery replacement method comprises:

[0019] Step S10, based on all the locking units on the frame being in the first state, the driving module away from the vehicle head in the first direction drives the abutment block to move until the locking unit away from the vehicle head in the first direction reaches the second state;

[0020] Step S20, based on the locking unit away from the vehicle head in the first direction reaching the second state, the driving module close to the vehicle head in the first direction drives the resistance block to move until the locking unit close to the vehicle head in the first direction reaches the second state.

[0021] In some embodiments, the locking units are further arranged in two groups along the second direction of the base, and the first direction is perpendicular to the second direction and both are arranged horizontally;

[0022] The method further comprises:

[0023] Step S30: based on the locking unit close to the vehicle head in the first direction reaching the second state, the driving module in the second direction drives the abutment block to move until the locking unit in the second direction reaches the second state.

[0024] In some embodiments, the locking angle of the locking unit is defined as the angle between the corresponding first connecting rod and the reference normal, the locking angle of the locking unit away from the vehicle front in the first direction is greater than a preset angle threshold, and the locking angle of the locking unit close to the vehicle front in the first direction is less than or equal to the preset angle threshold.

[0025] In some embodiments, the vehicle battery replacement method further includes:

[0026] Step S40, based on the locking unit in the first direction away from the vehicle head reaching the second state, accumulating the actual consumed life of the locking unit in the first direction away from the vehicle head;

[0027] Step S50, based on the fact that the actual life of the locking unit in the first direction away from the vehicle front is greater than or equal to the preset life, and the actual life of the locking unit in the first direction close to the vehicle front is less than the preset life, an instruction to swap the positions of the two groups of locking units in the first direction is issued during the next battery replacement.

[0028] In order to solve the problem of low installation reliability of the battery box system, the present invention has the following advantages:

[0029] The present invention optimizes the locking assembly, and utilizes the cooperation of the first connecting rod, the second connecting rod and the limiting module to clamp the base between the interference block and the bottom bracket. The reference normal is defined to be perpendicular to the surface of the base and the interference block, the axis point of the rotational connection between the first connecting rod and the interference block is located on the reference normal, and the axis point of the rotational connection between the first connecting rod and the second connecting rod is located on the side of the reference normal close to the center of the bottom bracket. When the vehicle body is bumpy, the locking assembly is subjected to an upward force, and the component of the upward force will act on the limiting module through the first connecting rod, while the force acting on the cylinder will be reduced, thereby reducing the wear on the drive module and extending the life of the locking assembly. In addition, the reaction force generated by the abutment of the limiting module and the first connecting rod can ensure that the interference block remains stable and effectively prevent loosening, thereby significantly improving the locking effect of the battery box, providing a solid guarantee for the safe operation of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic cross-sectional view of a locking unit according to an embodiment is shown;

[0031] Figure 2 A schematic diagram of a locking assembly according to an embodiment is shown;

[0032] Figure 3 It shows a Figure 2 An enlarged schematic diagram of point A of the locking assembly shown in the embodiment;

[0033] Figure 4 It shows a Figure 2 An enlarged schematic diagram of point B of the locking assembly shown in the embodiment;

[0034] Figure 5 A schematic diagram of a battery box system according to an embodiment is shown;

[0035] Figure 6 A schematic diagram of a vehicle according to an embodiment is shown;

[0036] Figure 7 A schematic flow chart of a vehicle battery replacement method according to an embodiment is shown.

[0037] Figure numerals: 10 battery box assembly; 11 box body; 12 base; 13 clamping block; 20 locking assembly; 21 bottom bracket; 22 locking unit; 221 driving module; 2211 driving cylinder; 222 resistance block; 223 first connecting rod; 224 second connecting rod; 225 limiting module; 226 mounting frame; 2261 making way; 30 vehicle body assembly; 31 vehicle front; 32 vehicle frame; 33 driving unit. DETAILED DESCRIPTION

[0038] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0039] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0040] During the battery replacement process of the vehicle, the last step is to fix the battery box, and the locking assembly 20 is required to firmly fix the battery box to the frame 32. However, the lock tongue design of the existing battery box locking assembly 20 often lacks the necessary buffer device. When the vehicle encounters bumpy road conditions during driving, the lock tongue is easily deformed or worn due to the impact force, which affects the locking effect, shortens the service life, and causes accidents such as the battery box falling off.

[0041] This embodiment discloses a battery box system, such as Figure 5 and Figure 2As shown, the battery box assembly 10 and the locking assembly 20 may be included. The battery box assembly 10 may include a box body 11 and a base 12, the base 12 and the box body 11 may be detachably connected, and the base 12 may be located inside the box body 11. The battery box assembly 10 may be fixed to the vehicle frame 32 by the cooperation of the locking assembly 20 and the base 12.

[0042] The locking assembly 20 may include a base 21 and a locking unit 22. The locking units 22 are arranged in at least two groups along a first direction, and the two groups of locking units 22 are arranged opposite to each other. The first direction includes the direction in which the vehicle travels straight. In this embodiment, as a preferred embodiment, the locking units 22 may be arranged in four groups along the first direction, and two groups are arranged opposite to each other, so as to stably fix the battery box assembly 10. Figure 1 As shown, the locking unit 22 may include a driving module 221, a resistance block 222, a first connecting rod 223, a second connecting rod 224 and a limiting module 225. The driving module 221 may be detachably connected to the base 21. The resistance block 222 may be detachably connected to the driving module 221, and the driving module 221 may drive the resistance block 222 to move. One end of the first connecting rod 223 may be rotatably connected to the resistance block 222, and one end of the first connecting rod 223 away from the resistance block 222 may be rotatably connected to one end of the second connecting rod 224. The limiting module 225 may be located on a side of the first connecting rod 223 away from the center of the base 21, and the limiting module 225 may limit the movement path of the first connecting rod 223. In another embodiment, the limiting module 225 may be V-shaped with a set angle, one end of which may be fixedly connected to the second connecting rod 224 and rotate with the second connecting rod 224, and the other end of which may limit the movement path of the first connecting rod 223.

[0043] like Figure 1 As shown, the bottom bracket 21 can be detachably connected to a mounting bracket 226 by bolts, and the end of the second connecting rod 224 away from the first connecting rod 223 can be rotatably connected to the mounting bracket 226. The mounting bracket 226 provides a rotatable connection position for the second connecting rod 224, so that the second connecting rod 224 can rotate relative to the bottom bracket 21. Figure 4As shown, the mounting frame 226 is also provided with a clearance opening 2261. When the second connecting rod 224 rotates into the clearance opening 2261, the mounting frame 226 can limit the rotation stroke of the second connecting rod 224. The function of the clearance opening 2261 can be: in the second state, the first connecting rod 223, the second connecting rod 224 and the abutment block 222 extend out of the mounting frame 226 to press the clamping block 13; in the first state, the three are retracted into the mounting frame 226. As another alternative embodiment, a limiting structure can be provided to limit the rotation of the second connecting rod 224, and the limiting structure can be fixedly connected to the bottom bracket 21. The mounting frame 226 does not limit the second connecting rod 224, and the shape of the mounting frame 226 can be relatively simple, and it only needs to be fixed on the bottom bracket 21. The mounting frame 226 only plays the role of being rotatably connected to the second connecting rod 224.

[0044] The battery box system may include a first state and a second state. Figure 1 and Figure 3 As shown, the first state may include: under the action of the driving module 221, the contact block 222 moves toward the direction close to the driving module 221, thereby separating from the base 12, and at the same time, the first connecting rod 223 separates from the limiting module 225 under the action of the contact block 222. At this time, the connecting rod is in a retracted state, the contact block 222 does not clamp the base 12, and the battery box assembly 10 is in an unfixed state.

[0045] like Figure 4 As shown, the second state may include: under the action of the driving module 221, the abutment block 222 moves in a direction away from the driving module 221, and the first connecting rod 223 rotates to the limit position and abuts against the limit module 225. At this time, the base 12 is clamped between the abutment block 222 and the bottom bracket 21, and the position of the battery box assembly 10 is fixed. The reference normal is defined to be perpendicular to the surface of the base 12 and the abutment block 222, the axis point of the first connecting rod 223 and the abutment block 222 is located on the reference normal, and the axis point of the first connecting rod 223 and the second connecting rod 224 is located on the side of the reference normal close to the center of the bottom bracket 21. When the vehicle body is bumpy, the locking assembly 20 is subjected to an upward force, and the component of the upward force will act on the limit module 225 through the first connecting rod 223, while the force acting on the cylinder will be reduced, thereby reducing the wear of the driving module 221 and extending the life of the locking assembly 20. In addition, the reaction force generated by the abutment between the limiting module 225 and the first connecting rod 223 can ensure that the abutment block 222 remains stable and effectively prevents loosening, thereby significantly improving the locking effect of the battery box and providing a solid guarantee for the safe operation of new energy vehicles.

[0046] In some embodiments, Figure 1As shown, there may be a plurality of snap-in blocks 13 on the base 12, and the snap-in blocks 13 may be detachably connected to the base 12. The snap-in blocks 13 may be located on the side of the base 12 facing away from the base 21, and may correspond one to one with the locking units 22. In the second state, the snap-in blocks 13 may abut against the abutting blocks 222, and the abutting surfaces of the snap-in blocks 13 and the abutting blocks 222 may be tilted toward the center of the base 21, so that the forces exerted on the abutting blocks 222 in the two groups of locking units 22 arranged relatively to each other can partially offset each other in the horizontal direction, thereby improving the shock-absorbing performance. In addition, the abutting surfaces of the snap-in blocks 13 and the abutting blocks 222 are tilted toward the center of the base 21, so that the driving module 221 is conveniently arranged inside the base 21, thereby saving installation space.

[0047] In some embodiments, Figure 1 As shown, the mounting bracket 226 is used to facilitate the installation of the second connecting rod 224, and the movement path of the second connecting rod 224 can be limited. The inner end of the V-shaped limiting module 225 can be detachably connected to one end of the second connecting rod 224, which has the effect of simplifying the limiting module 225. The limiting module 225 can rotate with the second connecting rod 224, and the other end that is not connected to the second connecting rod 224 can limit the movement path of the first connecting rod 223.

[0048] In some embodiments, Figure 2 As shown, in addition to the four groups of locking units 22 arranged relatively along the first direction, two groups of locking units 22 can be arranged relatively along the second direction, and the first direction can be perpendicular to the second direction, and the first direction can include the direction when the car is traveling in a straight line. The locking unit 22 can be detachably connected to the base 21 to determine the position. Increasing the number of locking units 22 and the direction in which the battery box is locked can achieve a more stable locking of the battery box assembly 10.

[0049] In some embodiments, Figure 1 As shown, the driving module 221 can be a driving cylinder 2211, and the piston rod of the driving cylinder 2211 can be rotatably connected to the abutment block 222, so that the abutment block 222 can more flexibly abut against the clamping block 13 to transmit pressure. The end of the driving cylinder 2211 away from the abutment block 222 can be rotatably connected to the base 21 to fix the position. The rotational connection can avoid vibration damage caused by the rigid connection, which helps to improve the shock absorption performance of the locking assembly 20.

[0050] In this embodiment, a vehicle is provided, which includes any battery box system of the above embodiments, such as Figure 5 and Figure 6As shown, the vehicle may further include a body assembly 30. The body assembly 30 may include a front 31, a frame 32, and a drive unit 33. The front 31 may be detachably connected to the frame 32, and the drive unit 33 may drive the front 31 and the frame 32 to travel. In addition, the base 21 of the locking assembly 20 may be detachably connected to the bottom of the frame 32, and the battery box assembly 10 may be fixed to the frame 32 by connecting to the locking assembly 20. The front 31 may be located in a first direction of the frame 32, and the first direction may include a direction in which the vehicle is traveling straight ahead.

[0051] In this embodiment, a vehicle battery replacement method is provided, and the vehicle battery replacement method is applied to the vehicle in the above embodiment, such as Figure 7 As shown, the vehicle battery replacement method may include steps S10 to S20, and each step is described in detail as follows:

[0052] Step S10, when all the locking units 22 on the vehicle frame 32 are in the first state, the driving modules 221 in the two locking units 22 away from the vehicle head 31 in the first direction can drive the abutment blocks 222 to move until the locking units 22 away from the vehicle head 31 in the first direction reach the second state. The driving module 221 can be operated in a manually controlled manner. In another embodiment, the driving module 221 can also be automatically controlled and automatically operated to lock the base 12 when it is detected that the battery box is placed in a specified position.

[0053] In step S20, after the locking unit 22 far from the vehicle head 31 in the first direction reaches the second state, the driving module 221 in the two locking units 22 close to the vehicle head 31 in the first direction can drive the abutment block 222 to move until the locking unit 22 close to the vehicle head 31 in the first direction reaches the second state. The driving module 221 can be operated in a manually controlled manner. In another embodiment, the driving module 221 can also be automatically controlled and automatically operated to lock the base 12 when it is detected that the battery box is placed in a specified position.

[0054] In some embodiments, Figure 2 As shown, the locking units 22 can also be arranged in two groups along the second direction of the base 21, and the first direction and the second direction are perpendicular and both are arranged horizontally. The first direction may include the direction when the car is traveling in a straight line.

[0055] The vehicle battery replacement method further includes step S30, which is described in detail as follows:

[0056] Step S30, after the locking unit 22 close to the front of the vehicle 31 in the first direction reaches the second state, the driving modules 221 in the two locking units 22 in the second direction can drive the resistance block 222 to move until the locking units 22 along the second direction reach the second state, locking the battery box assembly 10. The driving modules 221 in the two locking units 22 in the second direction can run synchronously to save time. In another embodiment, the driving modules 221 in the two locking units 22 in the second direction can run successively to drive the resistance block 222 to move until both locking units 22 reach the second state, at which time the battery box assembly 10 can be completely locked on the frame 32.

[0057] In some embodiments, the locking angle of the locking unit 22 can be defined as the angle between the corresponding first connecting rod 223 and the reference normal. Ensuring that the locking angle exceeds the preset angle threshold can ensure the limiting effect of the limit module 225 on the first connecting rod 223, and enable the first connecting rod 223 to transmit force to the limit module 225, thereby reducing the possibility of damage to the first connecting rod 223, thereby extending the service life of the locking unit 22. Generally, the stability of the battery box assembly 10 is most damaged during braking, so the strength of the locking assembly 20 away from the front of the vehicle 31 in the first direction can be prioritized. The locking angle of the locking unit 22 away from the front of the vehicle 31 in the first direction can be greater than the preset angle threshold, and the locking angle of the locking unit 22 close to the front of the vehicle 31 in the first direction can be less than or equal to the preset angle threshold.

[0058] In some embodiments, the vehicle battery replacement method further includes steps S40 to S50, which are described in detail as follows:

[0059] Step S40, after the locking unit 22 away from the front of the vehicle 31 in the first direction reaches the second state, the actual consumed life of the locking unit 22 away from the front of the vehicle 31 in the first direction can be accumulated. In other embodiments, the accumulation of the service life can be calculated by calculating the mileage of the vehicle, the duration of the second state, or the number of times the vehicle is replaced.

[0060] In step S50, when the actual lifespan of the locking unit 22 away from the vehicle front 31 in the first direction is greater than or equal to the preset lifespan, and the actual lifespan of the locking unit 22 close to the vehicle front 31 in the first direction is less than the preset lifespan, the locking unit 22 close to the vehicle front 31 in the first direction and the locking unit 22 away from the vehicle front 31 in the first direction can be swapped during the next battery replacement to increase the service life of the locking assembly 20.

[0061] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A battery box system, characterized in that: The battery box system comprises: A battery box assembly, the battery box assembly comprising a box body and a base, the base being detachably connected to the box body; A locking assembly, wherein the locking assembly comprises a base and a locking unit, wherein the locking unit has at least two groups arranged relatively along a first direction; wherein the locking unit comprises: a driving module, which is detachably connected to the base; a resistance block, which is detachably connected to the driving module, and the driving module drives the resistance block to move; a first connecting rod, wherein one end of the first connecting rod is rotatably connected to the resistance block; a second connecting rod, wherein one end of the first connecting rod away from the resistance block is rotatably connected to one end of the second connecting rod; a limiting module, wherein the limiting module is located on a side of the first connecting rod away from the center of the base, and the limiting module limits the movement path of the first connecting rod; The bottom bracket is detachably connected to a mounting frame, the end of the second connecting rod away from the first connecting rod is rotatably connected to the mounting frame, and when the abutment block is in the first state, a side of the second connecting rod away from the center of the bottom bracket abuts against the mounting frame; The battery box system includes a first state and a second state; the first state includes: the abutment block is separated from the base, and the first connecting rod is separated from the limit module; The second state includes: the base is clamped between the interference block and the bottom bracket, a reference normal line is defined to be perpendicular to the surface where the base and the interference block are in contact, the axis point where the first connecting rod is rotatably connected to the interference block is located on the reference normal line, the axis point where the first connecting rod is rotatably connected to the second connecting rod is located on a side of the reference normal line close to the center of the bottom bracket, and the first connecting rod is in contact with the limit module; The base is detachably connected with a plurality of clamping blocks, the clamping blocks are located on a side of the base away from the base, the clamping blocks correspond to the locking units one by one, the abutting blocks abut against the clamping blocks in the second state, and the surfaces of the clamping blocks abutting against the abutting blocks are inclined toward the center of the base; The limiting module is detachably connected to the second connecting rod.

2. A battery box system according to claim 1, characterized in that: The locking units are further arranged in two groups relatively along a second direction, and the first direction is perpendicular to the second direction.

3. A battery box system according to claim 1, characterized in that: The driving module is a driving cylinder, a piston rod of the driving cylinder is rotatably connected to the abutment block, and one end of the driving cylinder away from the abutment block is rotatably connected to the base.

4. A vehicle, characterized in that: include: The battery box system according to any one of claims 1 to 3; as well as The vehicle body assembly includes a vehicle head, a frame and a driving unit, wherein the vehicle head is connected to the frame, the driving unit drives the vehicle head and the frame to travel, the base is detachably connected to the frame, the battery box assembly is locked on the frame by the locking assembly, and the vehicle head is located in a first direction of the frame.

5. A vehicle battery replacement method, applied to the vehicle according to claim 4, characterized in that: The vehicle battery replacement method comprises: Step S10, based on all the locking units on the frame being in the first state, the driving module away from the vehicle head in the first direction drives the abutment block to move until the locking unit away from the vehicle head in the first direction reaches the second state; Step S20, based on the locking unit away from the vehicle head in the first direction reaching the second state, the driving module close to the vehicle head in the first direction drives the resistance block to move until the locking unit close to the vehicle head in the first direction reaches the second state.

6. A vehicle battery replacement method according to claim 5, characterized in that: The locking units are also arranged in two groups along the second direction of the base, and the first direction is perpendicular to the second direction and both are arranged horizontally. The method further comprises: Step S30: based on the locking unit close to the vehicle head in the first direction reaching the second state, the driving module in the second direction drives the abutment block to move until the locking unit in the second direction reaches the second state.

7. A vehicle battery replacement method according to claim 5, characterized in that: The locking angle of the locking unit is defined as the angle between the corresponding first connecting rod and the reference normal line. The locking angle of the locking unit away from the vehicle front in the first direction is greater than a preset angle threshold, and the locking angle of the locking unit close to the vehicle front in the first direction is less than or equal to the preset angle threshold.

8. A vehicle battery replacement method according to claim 5, characterized in that: The vehicle battery replacement method further includes: Step S40, based on the locking unit in the first direction away from the vehicle head reaching the second state, accumulating the actual consumed life of the locking unit in the first direction away from the vehicle head; Step S50, based on the fact that the actual life of the locking unit away from the vehicle front in the first direction is greater than or equal to the preset life, and the actual life of the locking unit close to the vehicle front in the first direction is less than the preset life, an instruction to swap the positions of the two groups of locking units in the first direction is issued during the next battery replacement.

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