A battery quick-change device and method capable of being controlled by a vehicle

Abstract

The present invention belongs to the technical field of new energy electric vehicles, and discloses a vehicle-side controllable battery quick-change device and method. The vehicle-side controllable battery quick-change device includes a battery-side assembly and a vehicle-side assembly, and also includes a driving member and a controller. The controller is communicatively connected to the driving member, and the driving member is connected to the connecting rod of the vehicle-side assembly to realize automatic driving unlocking and locking of the vehicle-side assembly. The vehicle-side assembly includes a lock body, a first connecting rod and a second connecting rod. The driving member drives the second connecting rod to move and drives the first connecting rod so that the rotating part in the lock body can tighten and unlock the lock tongue of the battery-side assembly. The present invention realizes the automatic control of battery pack unlocking and locking, and improves the efficiency of quick change; the unlocking linkage is good and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy electric vehicles, and in particular to a battery quick-change device and method that can be controlled by a vehicle. Background Art

[0002] At present, the existing electric vehicle battery replacement mechanisms all need to rely on the exclusive battery replacement equipment of the battery replacement station, that is, the battery replacement equipment of the battery replacement station is bound to the battery replacement structure. This battery replacement platform has poor versatility, resulting in waste of battery replacement platform resources; currently, battery pack battery replacement is mainly divided into side battery replacement and bottom battery replacement, and the battery replacement mechanism is divided into semi-fixed bolt fastening method, ratchet buckle method and unlocking connecting rod slider method and other implementation methods. The mechanical life of the card connection is longer, but the mechanism is complex, the locking and unlocking control is manual operation, and the automation is not high. Summary of the invention

[0003] The object of the present invention is to provide a battery quick-change device and method that can be controlled by the vehicle end, so as to solve the problems of complexity and low automation of the battery quick-change mechanism.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A battery quick-change device controllable by a vehicle end, comprising:

[0006] A battery terminal assembly, the battery terminal assembly comprising a locking tongue, a plurality of the locking tongues being provided, the plurality of the locking tongues being fixedly mounted at the hanging point of the battery pack and being evenly spaced;

[0007] A vehicle end assembly, the vehicle end assembly comprises a lock body, a first connecting rod and a second connecting rod, the lock bodies are provided with a plurality of, each of the lock bodies comprises a fixed part and a rotating part, the fixed part is fixed on the vehicle body, the rotating part is rotatably connected to the fixed part, a locking hole is provided at the bottom end of the rotating part, the locking tongue can extend into the locking hole to lock or disengage from the locking hole to unlock; one end of the first connecting rod is rotatably connected to the eccentric position of the rotating part; a plurality of sliders are arranged at intervals on the second connecting rod, the fixed part is provided with a sliding groove, a plurality of the sliders are slidably connected to the sliding grooves of the plurality of the fixed parts in a one-to-one correspondence, and the other end of the first connecting rod is rotatably connected to the slider; the rotating part, the first connecting rod and the slider constitute a crank slider mechanism;

[0008] A driving member, wherein an output end of the driving member is connected to the second connecting rod to drive the second connecting rod to drive the slider to slide relative to the fixed portion, and then drive the rotating portion to rotate through the first connecting rod to unlock the lock tongue;

[0009] A controller is communicatively connected with the driving member to control the action of the driving member.

[0010] Optionally, a pin hole is provided at the hanging point of the battery pack, the pin hole is spaced apart from the lock tongue, and a pin is provided on the vehicle body, and the pin cooperates with the pin hole for positioning.

[0011] Optionally, when the rotating portion is in a locked or unlocked state, the sliding block respectively stops at two ends of the sliding groove to limit the position.

[0012] Optionally, the vehicle body includes a vehicle body floor panel, the vehicle body floor panel is provided with a through hole, and the fixing portion is embedded in the through hole for fixing.

[0013] Optionally, the fixed part is provided with a first accommodating cavity and a second accommodating cavity which are interconnected, the rotating part is rotatably connected to the first accommodating cavity, the sliding groove is provided on the side wall of the second accommodating cavity, and the sliding block passes through the sliding groove and is provided in the second accommodating cavity.

[0014] Optionally, the second accommodating cavity is provided with a guide block, the guide block is arranged along the sliding direction, and the sliding block is slidably connected to the guide block.

[0015] Optionally, the rotating part includes balls, which are evenly arranged around the circumference of the rotating part, and the balls can be clamped between the inner wall of the first accommodating cavity and the outer wall of the rotating part to realize the rotation of the rotating part.

[0016] Optionally, the fixing portion is provided with a clamping spring, which is clamped to the inner wall of the second accommodating cavity and is located at the top end of the rotating portion to axially limit the rotating portion.

[0017] Optionally, the battery pack is provided with a thermal runaway sensor, and the thermal runaway sensor is communicatively connected to the controller.

[0018] The present invention also provides a battery quick-change method that can be controlled by a vehicle end. According to the battery quick-change device that can be controlled by a vehicle end, the battery quick-change method that can be controlled by a vehicle end comprises the following steps:

[0019] When the battery end components and vehicle end components need to be locked,

[0020] S11, the controller issues an unlocking command, the driving member drives the second connecting rod to move, the second connecting rod drives the slider to slide in the slide groove of the fixed part, and the slider drives the rotating part to rotate to the position and maintain it through the first connecting rod;

[0021] S12, facing the locking tongue of the battery terminal assembly upward and lifting the battery pack from bottom to top so that the locking tongue is aligned with the locking hole of the rotating part;

[0022] S13, continue to lift the battery pack upward until the lock tongue is inserted into the lock hole and in place;

[0023] S14, the controller issues a locking instruction, and the driving member drives the second connecting rod to move in the reverse direction to lock the locking tongue;

[0024] When the battery end component and the vehicle end component need to be unlocked,

[0025] S21, lifting the battery pack under the battery pack;

[0026] S22, the controller issues an unlocking instruction, the driving member drives the second connecting rod to move, the second connecting rod drives the slider to slide in the sliding groove of the fixed part, and the slider drives the rotating part to rotate to a certain position and maintain it through the first connecting rod;

[0027] S23, lifting the battery pack and moving it downward so that the lock tongue gradually disengages from the lock hole;

[0028] S24, the controller issues a locking command, and the driving member drives the second connecting rod to move in the reverse direction to reset the rotating part.

[0029] Beneficial effects of the present invention:

[0030] The vehicle-side controllable battery quick-change device of the present invention controls the action of the driving member through the controller to realize the driving control of the vehicle-side component to unlock or lock the battery-side component, which is convenient for the vehicle controller to control the battery pack quick change at the vehicle end, thereby realizing the automatic control of battery pack unlocking and locking, and improving the quick change efficiency. The present invention drives multiple sliders to drive multiple first connecting rods to drive multiple rotating parts to rotate to unlock multiple lock tongues through a second connecting rod, and the unlocking linkage of multiple battery-side components and vehicle-side components is good and efficient.

[0031] The vehicle-side controllable battery quick-change method of the present invention controls the action of the driving member through the controller to drive the second connecting rod to move, thereby increasing the reliability of the second connecting rod driving the rotating parts of multiple lock bodies to unlock and lock. The controller can communicate with the vehicle controller to realize the automatic control of the vehicle-side battery assembly, and the battery quick-change efficiency is high and the safety performance is good. The battery pack is moved from bottom to top for installation, and only a lifting plate is required, without the need for clamping and other matching parts, so it is easier to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of installing a battery quick-change device that can be controlled by a vehicle end on a vehicle body floor provided by an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of installing a battery quick-change device that can be controlled by a vehicle end on a battery pack provided by an embodiment of the present invention;

[0034] Figure 3It is a structural schematic diagram of a battery end assembly in a battery quick-change device that can be controlled by a vehicle end provided by an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the connection structure between a battery terminal assembly and a battery pack in a battery quick-change device that can be controlled by a vehicle end provided by an embodiment of the present invention;

[0036] Figure 5 It is a structural schematic diagram of a locking tongue in a battery quick-change device that can be controlled by a vehicle end provided by an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the exploded structure of a vehicle-side component in a battery quick-change device that can be controlled by the vehicle-side provided by an embodiment of the present invention;

[0038] Figure 7 A schematic structural diagram of a locking hole on a rotating part in a battery quick-change device that can be controlled by a vehicle end provided by an embodiment of the present invention.

[0039] In the figure:

[0040] 100, battery pack; 101, pin hole; 200, vehicle body floor;

[0041] 1. Battery end assembly; 11. Lock tongue; 12. Nut; 13. Annular limiting boss; 14. Pin; 2. Vehicle end assembly; 21. Lock body; 211. Fixing part; 2111. Slide groove; 2112. First accommodating chamber; 2113. Second accommodating chamber; 2114. Guide block; 212. Rotating part; 2121. Lock hole; 22. First connecting rod; 23. Second connecting rod; 231. Sliding block. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] The present invention provides a battery quick-change device that can be controlled by the vehicle end, such as Figure 1-Figure 7 As shown, it includes a battery end assembly 1 and a vehicle end assembly 2, a driver and a controller, and the controller is connected to the driver to control the action of the driver. The controller controls the action of the driver to realize the driving control of the vehicle end assembly 2 to unlock or lock the battery end assembly 1. When the controller is connected to the vehicle controller, it is convenient for the vehicle controller to control the battery pack 100 quickly, thereby realizing the automatic control of unlocking and locking the battery pack 100 and improving the efficiency of quick change.

[0047] The battery terminal assembly 1 is arranged on the battery pack 100, and the battery terminal assembly 1 includes a locking tongue 11, and a plurality of locking tongues 11 are provided, and the plurality of locking tongues 11 are fixedly installed at the hanging point position of the battery pack 100 and are evenly spaced; Figure 2 As shown, a step surface is formed between the hanging point of the battery pack 100 and the battery pack 100 body, and the lock tongue 11 is arranged on the step surface. Hanging points are arranged on both sides of the length direction of the battery pack 100, and the lock tongue 11 is arranged at intervals along the hanging points on both sides, and the two sides are symmetrically arranged. Figure 3-Figure 5As shown, the bottom end of the lock tongue 11 passes through the hanging point and cooperates with the nut on the other end face to achieve a detachable connection. An annular limiting boss 13 is provided on the lock tongue 11, and the annular limiting boss 13 can stop on the surface of the hanging point of the battery pack 100 so that the nut 12 can lock the lock tongue 11 and fix it. In this embodiment, three evenly spaced protrusions are provided at the end of the lock tongue 11 to form a blade shape to facilitate locking with the vehicle end component 2. Furthermore, a positioning pin can be provided on the side of the annular limiting boss 13 facing the battery pack 100, and when the lock tongue 11 is connected, it cooperates with the positioning hole on the battery pack 100 to limit the position by pinning, so as to prevent the lock tongue 11 from rotating relative to the battery pack 100.

[0048] like Figure 6 and Figure 7 The vehicle end assembly 2 includes a lock body 21, a first connecting rod 22 and a second connecting rod 23. There are multiple lock bodies 21, and each lock body 21 is arranged in a one-to-one correspondence with the lock tongue 11. Each lock body 21 includes a fixed portion 211 and a rotating portion 212, wherein the fixed portion 211 is fixed to the vehicle body, and the rotating portion 212 is rotatably connected to the fixed portion 211. A lock hole 2121 is provided at the bottom end of the rotating portion 212, and the lock tongue 11 can extend into the lock hole 2121 to lock or disengage from the lock hole to unlock; one end of the first connecting rod 22 is rotatably connected to the eccentric position of the rotating portion 212; a plurality of sliders 231 are arranged at intervals on the second connecting rod 23, a sliding groove 2111 is provided on the fixed portion 211, and the plurality of sliders 231 are slidably connected to the sliding grooves 2111 of the plurality of fixed portions 211 in a one-to-one manner, and the other end of the first connecting rod 22 is rotatably connected to the slider 231; the rotating portion 212, the first connecting rod 22 and the slider 231 form a crank slider mechanism; the output end of the driving member is connected to the second connecting rod 22 to drive the second connecting rod 22 to drive the slider 231 to slide relative to the fixed portion 211, and then drive the rotating portion 212 to rotate through the first connecting rod 22 to unlock the lock tongue 11.

[0049] It can be understood that the second connecting rod 23 is provided with a plurality of sliders 231 at intervals along the length direction of the battery pack 100, and the number of the sliders 231 and the lock body 21 is equal to the number of the lock tongues 11 in the battery terminal assembly 1, and the two are arranged in a one-to-one correspondence. When the driving member drives the second connecting rod 23 to move, the second connecting rod 23 drives the plurality of sliders 231 to slide in the plurality of lock bodies 21 at the same time and drives the rotating part 212 in the lock body 21 to rotate, thereby locking and unlocking the lock tongues 11, thereby realizing locking and unlocking of the battery pack 100. The unlocking linkage of the plurality of battery terminal assemblies 1 and the vehicle terminal assembly 2 is good, and the efficiency is high.

[0050] Specifically, two ends of the first connecting rod 22 are respectively connected to the top of the rotating part 212 and the slider 231 to form a crank slider mechanism, which converts the movement of the second connecting rod 23 into the rotation of the rotating part 212 to achieve locking and unlocking of the battery pack 100.

[0051] Optionally, a pin hole 101 is provided at the hanging point of the battery pack 100 , and the pin hole 101 is spaced apart from the locking tongue 11 . The battery terminal assembly 1 further includes a pin 14 , and the pin 14 cooperates with the pin hole 101 for positioning.

[0052] like Figure 1 and Figure 3 As shown, the battery pack 100 is locked and unlocked by locking the lock tongue 11 and the vehicle-end assembly 2. The vehicle body includes a vehicle body floor 200, and a through hole is provided on the vehicle body floor 200, and a fixing portion 211 is embedded in the through hole for fixing. It can be understood that the vehicle-end assembly 2 is fixed to the vehicle body floor 200 by the fixing portion 211, and the pin 14 is successively passed through the pin hole 101 of the vehicle body floor 200 and the battery pack 100, and is fixedly connected in the pin hole 101. The pin 14 and the pin hole 101 can be plugged, snapped or screwed together, etc., to limit the installation plane of the battery pack 100 during the assembly process of the battery pack 100. As shown Figure 1 The vehicle body floor 200 is provided with a bending portion that matches the step surface of the hanging point position of the battery pack 100. When the bending portion is installed, the vertical surface is fitted and fixed to the vertical surface of the battery pack 100, and an annular limiting boss 13 on the locking tongue 11 is sandwiched between the bottom surface and the step surface of the hanging point position of the battery pack 100 to achieve positioning of the bottom surface and the installation surface of the battery pack 100.

[0053] Optionally, when the rotating portion 212 is in a locked or unlocked state, the slider 231 respectively stops at two ends of the sliding groove 2111 to limit the position.

[0054] like Figure 6 As shown, in order to prevent excessive movement or loss of control when the driving member drives the second connecting rod 23 to move, the moving distance of the second connecting rod 23 can be limited by setting the length of the sliding groove 2111 to ensure smooth locking and unlocking of the lock tongue 11.

[0055] Optionally, the fixed part 211 is provided with a first accommodating cavity 2112 and a second accommodating cavity 2113 which are interconnected, the rotating part 212 is rotatably connected to the first accommodating cavity 2112, the slide groove 2111 is provided on the side wall of the second accommodating cavity 2113, and the slider 231 passes through the slide groove 2111 and is provided in the second accommodating cavity 2113.

[0056] like Figure 6 As shown, the first accommodating cavity 2112 is a cylindrical cavity, and the second accommodating cavity 2113 is a long groove cavity, which are coaxial and connected, so that a centering crank slider mechanism is formed between the first connecting rod 22, the slider 231 and the rotating part 212, that is, the center of the rotating part 212 is located in the sliding direction of the slider 231. The second accommodating cavity 2113 can limit the sliding distance of the slider 231, so that the slider 231 can just lock and unlock the lock tongue 11 when it slides to the limit position.

[0057] Optionally, the second accommodating cavity 2113 is provided with a guide block 2114 , the guide block 2114 is arranged along the sliding direction, and the slider 231 is slidably connected to the guide block 2114 .

[0058] like Figure 6 As shown, the bottom end of the guide block 2114 is fixed on the fixed portion 211 and is located in the second accommodating cavity 2113. The slider 231 is provided with a U-shaped groove that cooperates with the guide block 2114 to limit the position. The opening of the U-shaped groove is downwardly buckled on the guide block 2114 to achieve axial and vertical limitation of the slider 231, so that the slider 231 has only one movement along the sliding direction, which is beneficial to improve the locking and unlocking accuracy of the rotating portion 212.

[0059] Optionally, the rotating part 212 includes balls (not shown in the figure), which are evenly arranged around the circumference of the rotating part 212. The balls can be clamped between the inner wall of the first accommodating cavity 2112 and the outer wall of the rotating part 212 to realize the rotation of the rotating part 212.

[0060] It should be noted that there are multiple balls, and the multiple balls are arranged around the annular groove on the outer peripheral wall of the rotating part 212 so that the rotating part 212 and the first accommodating chamber 2112 can form a relative rotation. The first accommodating chamber 2112 can be filled with lubricants to reduce the rotation friction of the rotating part 212 and ensure smooth rotation. Of course, the rotating part 212 and the fixed part 211 can also be connected to each other by setting a rotating bearing to achieve a rotation connection.

[0061] Optionally, the fixing portion 211 is provided with a retaining spring (not shown in the figure), which is clamped to the inner wall of the second accommodating cavity 2112 and located at the top end of the rotating portion 212 to axially limit the rotating portion 212 .

[0062] The function of the clamping spring is to axially limit the top of the rotating part 212 to prevent the rotating part 212 from slipping out of the first accommodating cavity 2112 when rotating. The clamping spring is preferably in the shape of an open sheet and is clamped in the slot on the inner wall of the first accommodating cavity 2112 for fixing, and the fixing method is simple and reliable.

[0063] Optionally, the battery pack 100 is provided with a thermal runaway sensor, and the thermal runaway sensor is communicatively connected to the controller.

[0064] The present invention provides a battery quick-change device that can be controlled by the vehicle end. The battery pack 100 can be locked and unlocked by locking and unlocking the battery end component 1 and the vehicle end component 2, and the battery pack 100 and the whole vehicle can be fixedly installed and locked or unlocked for battery replacement, and the locking process and unlocking process of the battery pack 100 can be realized; through the controller, it is responsible for controlling the locking movement state and the locking state of the whole vehicle condition monitoring. The battery quick-change device that can be controlled by the vehicle end can be independent of the dedicated battery replacement equipment of the battery replacement station, that is, at any battery replacement station and any occasion, as long as there is an ordinary lifting plate, the rapid battery replacement or the removal of the battery pack 100 can be completed; and it is a card-type quick-change mechanism with a fast battery replacement speed. When thermal runaway occurs in the battery pack 100, the thermal runaway sensor set on the battery pack 100 alarms and transmits the alarm signal to the battery management system, resulting in a change in the threshold of the battery management system, and then the signal is fed back to the vehicle controller. The vehicle controller controls the vehicle end component 2 to unlock the battery end component 1 through the driving member connected to the controller communication, so that the battery pack 100 is separated from the vehicle body floor 200, so that the heat can be dissipated as soon as possible.

[0065] The present invention also provides a battery quick-change method that can be controlled by a vehicle end. According to the battery quick-change device that can be controlled by a vehicle end, the battery quick-change method that can be controlled by a vehicle end includes the following steps:

[0066] When the battery end assembly 1 and the vehicle end assembly 2 need to be locked,

[0067] S11, the controller issues an unlocking command, the driving member drives the second connecting rod 23 to move, the second connecting rod 23 drives the slider 231 to slide in the slide groove 2111 of the fixed part 211, and the slider 231 drives the rotating part 212 to rotate to the position and maintain it through the first connecting rod 22;

[0068] S12, facing the locking tongue 11 of the battery terminal assembly 1 upwards and lifting the battery pack 100 from bottom to top so that the locking tongue 11 is aligned with the locking hole 2121 of the rotating part 212;

[0069] S13, continue to lift the battery pack 100 upward until the lock tongue 11 is inserted into the lock hole 2121 and in place;

[0070] S14, the controller issues a locking command, and the driving member drives the second connecting rod 23 to move in the reverse direction to lock the locking tongue 11;

[0071] When the battery end component 1 and the vehicle end component 2 need to be unlocked,

[0072] S21, lifting the battery pack 100 from below the battery pack 100;

[0073] S22, the controller issues an unlocking command, the driving member drives the second connecting rod 23 to move, the second connecting rod 23 drives the slider 231 to slide in the slide groove 2111 of the fixed part 211, and the slider 231 drives the rotating part 212 to rotate to the position and maintain it through the first connecting rod 22;

[0074] S23, lifting the battery pack 100 and moving it downward so that the lock tongue 11 gradually disengages from the lock hole 2121;

[0075] S24, the controller issues a locking command, and the driving member drives the second connecting rod 23 to move in the reverse direction to reset the rotating part 212.

[0076] The above-mentioned in-place detection can be performed by setting an in-place sensor, and the in-place sensor is communicatively connected with the controller.

[0077] In the vehicle-side controllable battery quick-change method of the present invention, the controller is set at the vehicle side, and the controller controls the action of the driving member to drive the second connecting rod 23 to move, thereby increasing the reliability of the second connecting rod 23 driving the rotating parts 212 of multiple lock bodies 21 to unlock and lock. The controller set at the vehicle side can communicate with the vehicle controller to realize the automatic control of the vehicle-side component 2, and the battery pack 100 has high quick-change efficiency and good safety performance. The battery pack 100 is moved and installed from bottom to top, and only a lifting plate is required, without the need for clamping and fixing parts, so it is easier to disassemble and assemble.

[0078] It should be noted that, in a specific embodiment, when the vehicle is to replace the battery pack 100, the battery exchange site needs to be equipped with a mechanical locking and unlocking device and a corresponding linkage drive mechanism. This device acts as a backup to avoid the vehicle-side function from failing due to the actuator of the whole vehicle, resulting in the phenomenon of unlocking and locking being not smooth. Optionally, the battery exchange site can also be equipped with a stacking system, a conveying system and a station-end control system. The main function of the stacking system is to place the battery pack 100 and charge the battery pack 100. The main function of the conveying system is to transport the battery pack 100, which can be an automatic trolley or a manual transfer trolley. The main function of the station-end control system is to control the normal operation of the electronic equipment in the battery exchange site, vehicle identification, communication with the whole vehicle, etc. It can be a simple device or a large-scale equipment in a battery exchange station.

[0079] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery quick-change device that can be controlled by the vehicle end, characterized in that: include: A battery terminal assembly (1), the battery terminal assembly (1) comprising a locking tongue (11), a plurality of the locking tongues (11) being provided, the plurality of the locking tongues (11) being fixedly mounted at the hanging point position of the battery pack (100) and being evenly spaced; A vehicle end assembly (2), the vehicle end assembly (2) comprising a lock body (21), a first connecting rod (22) and a second connecting rod (23), the lock body (21) being provided with a plurality of lock bodies, each of the lock bodies (21) comprising a fixed portion (211) and a rotating portion (212), the fixed portion (211) being fixed on the vehicle body, the rotating portion (212) being rotatably connected to the fixed portion (211), a locking hole (2121) being provided at the bottom end of the rotating portion (212), the locking tongue (11) being able to extend into the locking hole (2121) to lock or to disengage from the locking hole (2121) to unlock; one end of the first connecting rod (22) being rotatably connected to the rotating portion (2 12) eccentric position; a plurality of sliders (231) are arranged at intervals on the second connecting rod (23); the fixed part (211) is provided with a slide groove (2111); the plurality of sliders (231) are slidably connected in the slide grooves (2111) of the plurality of fixed parts (211) in a one-to-one correspondence; the other end of the first connecting rod (22) is rotatably connected to the slider (231); the rotating part (212), the first connecting rod (22) and the slider (231) constitute a crank slider mechanism; when the rotating part (212) is in a locked or unlocked state, the slider (231) respectively stops at the two ends of the slide groove (2111) to limit the position; a driving member, wherein the output end of the driving member is connected to the second connecting rod (23) so as to drive the second connecting rod (23) to drive the sliding block (231) to slide relative to the fixing portion (211), thereby driving the rotating portion (212) to rotate through the first connecting rod (22) to unlock the locking tongue (11); A controller, the controller being in communication with the driving member to control the movement of the driving member; The vehicle body comprises a vehicle body bottom plate, the vehicle body bottom plate is provided with a through hole, and the fixing part (211) is embedded in the through hole for fixing; The fixed portion (211) is provided with a first accommodating cavity (2112) and a second accommodating cavity (2113) which are interconnected, the rotating portion (212) is rotatably connected to the first accommodating cavity (2112), the sliding groove (2111) is provided on the side wall of the second accommodating cavity (2113), and the sliding block (231) passes through the sliding groove (2111) and is provided in the second accommodating cavity (2113); The second accommodating cavity (2113) is provided with a guide block (2114), the guide block (2114) is arranged along the sliding direction, and the sliding block (231) is slidably connected to the guide block (2114).

2. The vehicle-side controllable battery quick-change device according to claim 1, characterized in that: A pin hole (101) is provided at the hanging point of the battery pack (100), the pin hole (101) and the lock tongue (11) are arranged at intervals, and a pin (14) is provided on the vehicle body, the pin (14) and the pin hole (101) are matched for positioning.

3. The vehicle-side controllable battery quick-change device according to claim 1, characterized in that: The rotating part (212) comprises balls, which are evenly arranged around the circumference of the rotating part (212), and the balls can be clamped between the inner wall of the first accommodating cavity (2112) and the outer wall of the rotating part (212) to realize the rotation of the rotating part (212).

4. The vehicle-side controllable battery quick-change device according to claim 1, characterized in that: The fixing portion (211) is provided with a clamping spring, which is clamped to the inner wall of the second accommodating cavity (2113) and is located at the top end of the rotating portion (212) to axially limit the rotating portion (212).

5. The vehicle-side controllable battery quick-change device according to claim 1, characterized in that: The battery pack (100) is provided with a thermal runaway sensor, and the thermal runaway sensor is communicatively connected to the controller.

6. A vehicle-side controllable battery quick-change method, characterized in that: According to the vehicle-side controllable battery quick-change device according to any one of claims 1 to 5, the vehicle-side controllable battery quick-change method comprises the following steps: When the battery end assembly (1) and the vehicle end assembly (2) need to be locked, S11, the controller issues an unlocking command, the driving member drives the second connecting rod (23) to move, the second connecting rod (23) drives the slider (231) to slide in the slide groove (2111) of the fixed part (211), and the slider (231) drives the rotating part (212) to rotate to the position and maintain it through the first connecting rod (22); S12, facing the locking tongue (11) of the battery terminal assembly (1) upwards and lifting the battery pack (100) from bottom to top so that the locking tongue (11) is aligned with the locking hole (2121) of the rotating part (212); S13, continue to lift the battery pack (100) upward until the locking tongue (11) is inserted into the locking hole (2121) and is in place; S14, the controller issues a locking command, and the driving member drives the second connecting rod (23) to move in the opposite direction to lock the locking tongue (11); When the battery end assembly (1) and the vehicle end assembly (2) need to be unlocked, S21, lifting the battery pack (100) below the battery pack (100); S22, the controller issues an unlocking instruction, the driving member drives the second connecting rod (23) to move, the second connecting rod (23) drives the sliding block (231) to slide in the sliding groove (2111) of the fixed part (211), and the sliding block (231) drives the rotating part (212) to rotate to a certain position and maintain the position through the first connecting rod (22); S23, lifting the battery pack (100) to move downward so that the locking tongue (11) gradually disengages from the locking hole (2121); S24, the controller issues a locking command, and the driving member drives the second connecting rod (23) to move in the reverse direction to reset the rotating part (212).

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