A car power battery

Abstract

The present invention relates to an automotive power battery, belonging to the technical field of battery assemblies, comprising a top cover snap-fitted on a battery shell, the top sides of the battery shell are respectively connected with a positive pole and a negative pole, the bottom ends of the positive pole and the negative pole both penetrate the battery shell and extend into a bus bar inside the battery shell, the bus bar is provided with a positive plate and a negative plate adapted thereto in the length direction, and also comprising: a frame assembly, the frame assembly comprising a rectangular frame placed outside the battery shell, the top sides of the rectangular frame are provided with stepped grooves connected to the extended ends of the top cover, the bottom end of the rectangular frame is sleeved in a notch on a bottom plate, and the top of the bottom plate is provided with a lateral enclosure placed on the outer wall of the rectangular frame. The present invention can solve the technical problem that when a battery leaks, the current will be transmitted to the battery pack, causing a risk of leakage, and the protective clamping assembly cannot be clamped and fixed adaptively, further reducing the safety of vehicle operation.

Description

Technical Field

[0001] The present invention relates to the technical field of battery components, in particular to an automotive power battery. Background Art

[0002] Electric vehicle batteries are divided into two categories, storage batteries and fuel cells. Storage batteries are suitable for pure electric vehicles, including lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries.

[0003] A battery is a device that converts chemical energy directly into electrical energy. It is designed to be rechargeable and is recharged through a reversible chemical reaction. Its working principle is: when charging, it uses external electrical energy to regenerate the internal active substances, storing the electrical energy as chemical energy, and converting the chemical energy into electrical energy output again when it needs to be discharged.

[0004] As an industrial product, batteries play an important role in modern life. The lower shell and upper shell of the battery pack installation mechanism on the existing market are usually made of metal. If the battery leaks, the current will be transmitted to the battery pack, causing the risk of leakage and posing a major safety hazard. In addition, since battery shells are generally non-standard products, their sizes vary and need to be set according to the actual vehicle conditions. Therefore, the existing protective clamping components cannot be adaptively clamped and fixed, further reducing the safety of vehicle operation. Summary of the invention

[0005] The purpose of the present invention is to provide an automotive power battery to solve the technical problem that when the battery leaks, the current will be transmitted to the battery pack, causing the risk of leakage, and the protective clamping assembly cannot be adaptively clamped and fixed, further reducing the safety of the vehicle operation.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A car power battery, comprising a battery shell, a top cover snap-fitted on the battery shell, a positive electrode column and a negative electrode column placed on both sides of the top of the battery shell, and a frame assembly, wherein the bottom edge of the top cover is provided with a protrusion, the protrusion is connected to the embedding groove at the top of the battery shell, and the top cover is provided with a liquid filling hole screw plug extending to the inside of the battery shell; the bottom ends of the positive electrode column and the negative electrode column both penetrate the battery shell and extend into the bus bar inside the battery shell, the bus bar is provided with positive and negative plates adapted thereto in the length direction, and the frame assembly comprises a protrusion placed outside the battery shell The top of the rectangular frame and the bottom plate are provided with stepped grooves connected to the extended ends of the top cover on both sides of the top of the rectangular frame, the bottom end of the rectangular frame is sleeved in the notch on the bottom plate, and the top of the bottom plate is provided with lateral panels placed on the outer wall of the rectangular frame, wherein the connection between the lateral panels and the bottom plate is provided with positioning holes and locked and fixed by bolt assemblies, and the top of the rectangular frame is snap-connected with an insulating sealing plate; base blocks are fixedly installed around the bottom end of the bottom plate, and a clamping protection assembly is provided between the base blocks and arranged at the center of the bottom end of the bottom plate, and the clamping protection assembly includes a cover body The first motor and the second motor and the first gear and the second gear are at the top and bottom ends of the inner wall, the output shaft of the first motor and the output shaft of the second motor extend to the first gear and the second gear respectively, and a partition on the inner wall of the cover is provided between the first gear and the second gear; wherein, rolling grooves connected to the first gear and the second gear are provided at both ends of the outer wall of the partition, and the output shaft of the first motor and the central axis of the first gear and the output shaft of the second motor and the central axis of the second gear are locked and fixed by a coupling, both ends of the first gear are meshed with a first gear plate, one end of the first gear plate is connected to a crossbeam through a first bracket penetrating the cover body, and both ends of the crossbeam are fixedly mounted on the first protective plate away from the first bracket; both ends of the second gear are meshed with a second gear plate, one end of the second gear plate is connected to a stopper through a second bracket penetrating the cover body, and both ends of the stopper are fixedly mounted on the second protective plate away from the second bracket, and both ends of the second protective plate are movably connected with a second telescopic plate adapted thereto, and the second telescopic plate contacts and fits with the outer wall of the first protective plate.

[0008] Furthermore, an insulating support plate is integrally formed and installed on the inner wall of the rectangular frame, a first accommodating cavity is jointly formed between the insulating support plate, the insulating sealing plate and the inner wall of the rectangular frame, a second accommodating cavity is jointly formed between the insulating support plate, the bottom plate and the inner wall of the rectangular frame, and both ends of the outer wall of the rectangular frame are rotatably connected to side panels by hinges, the interior of the side panels is hollow and both ends are movably connected to the first telescopic plates, and the side panels and the first telescopic plates are provided with mounting holes connected to the external panel.

[0009] Furthermore, a clamping cavity is formed between the first protective plate, the second protective plate and the second telescopic plate, the base plate is respectively provided with a first slide groove and a second slide groove connected to the first bracket and the second bracket, and the insulating support plate is provided with a movable opening connected to the second bracket.

[0010] Furthermore, the first protective plate and the second protective plate are kept vertically arranged. As the first rotating tooth and the second rotating tooth rotate, the first bracket drives the first protective plate to move horizontally in the opposite direction of the Y-axis, and the second bracket drives the second telescopic plate on the second protective plate to move horizontally in the opposite direction of the X-axis, so that the first protective plate and the second protective plate can be fitted with or separated from the battery shell.

[0011] Furthermore, the rectangular frame is provided with a wire connection hole extending to the interior of the battery shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the battery shell, top cover and frame assembly of the present invention are effectively snap-fitted and installed through the stepped groove on the rectangular frame and the extended end on the top cover; the insulating support plate on the inner wall of the rectangular frame cooperates with the insulating sealing plate to increase the insulation of the battery accommodating space, which can effectively reduce the danger of current leakage when the power battery leaks during use, and improve the safety performance of the power battery placement frame assembly; the second accommodating cavity inside the rectangular frame can be filled with elastic material, so that even if the insulating support plate is damaged, the elastic material can have a corresponding buffering effect while ensuring its supporting connection, thereby further improving the safety of the device; in addition, bolt assemblies are arranged around the side enclosure and at the connection between the bottom plate, and the bolt assemblies can be screwed until they are in contact with the top of the bottom plate. The arranged bolt assemblies can facilitate the reinforcement operation of the installed rectangular frame to ensure stable installation of the frame assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0014] Figure 1 is a schematic structural diagram of a power battery in one embodiment of the present invention;

[0015] Figure 2 It is a structural schematic diagram of a frame assembly in one embodiment of the present invention;

[0016] Figure 3 is a front view of a frame assembly in one embodiment of the present invention;

[0017] Figure 4 The explosion of the frame assembly in one embodiment of the present invention Figure 1 ;

[0018] Figure 5 The explosion of the frame assembly in one embodiment of the present invention Figure 2 ;

[0019] Figure 6 It is a schematic diagram of the structure of a rectangular frame in one embodiment of the present invention;

[0020] Figure 7 is a top view of a rectangular frame in one embodiment of the present invention;

[0021] Figure 8 is a schematic diagram of a clamping protection assembly in one embodiment of the present invention;

[0022] Figure numerals: 1. battery shell; 2. top cover; 3. positive electrode column; 4. negative electrode column; 5. frame assembly; 6. rectangular frame; 7. bottom plate; 8. side enclosure; 9. insulating sealing plate; 10. insulating support plate; 11. first accommodating chamber; 12. second accommodating chamber; 13. side plate; 14. first telescopic plate; 15. mounting hole; 16. clamping protection assembly; 17. first motor; 18. second motor; 19. first rotating tooth; 20. second rotating tooth; 21. partition; 22. first gear plate; 23. first bracket; 24. crossbeam; 25. first protective plate; 26. second gear plate; 27. second bracket; 28. block; 29. ​​second protective plate; 30. second telescopic plate; 31. first slide groove; 32. second slide groove; 33. movable port; 34. filling hole screw plug. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] Reference Manual Attached Figure 1 -Attached Figure 8 , an automotive power battery, comprising a top cover 2 mounted on a battery shell 1, a positive electrode column 3 and a negative electrode column 4 are connected to the top and bottom of the battery shell 1, respectively, the bottom ends of the positive electrode column 3 and the negative electrode column 4 penetrate the battery shell 1 and extend to the bus bar inside the battery shell 1, and the bus bar is provided with positive and negative plates adapted thereto in the length direction, and also comprises:

[0026] The frame assembly 5 includes a rectangular frame 6 placed outside the battery shell 1, and both sides of the top of the rectangular frame 6 are provided with step grooves connected to the extended ends of the top cover 2. The bottom end of the rectangular frame 6 is sleeved in the notch on the bottom plate 7. The top of the bottom plate 7 is provided with a lateral enclosure 8 placed on the outer wall of the rectangular frame 6, wherein the connection between the lateral enclosure 8 and the bottom plate 7 is provided with a positioning hole and is locked and fixed by a bolt assembly, and the top of the rectangular frame 6 is snap-connected with an insulating sealing plate 9.

[0027] An insulating support plate 10 is integrally formed and installed on the inner wall of the rectangular frame 6, a first accommodating cavity 11 is formed between the insulating support plate 10, the insulating sealing plate 9 and the inner wall of the rectangular frame 6, a second accommodating cavity 12 is formed between the insulating support plate 10, the bottom plate 7 and the inner wall of the rectangular frame 6, and both ends of the outer wall of the rectangular frame 6 are rotatably connected to side panels 13 through hinges, the inside of the side panels 13 is hollow and both ends are movably connected to first telescopic plates 14, and mounting holes 15 connected to external panels are provided on the side panels 13 and the first telescopic plates 14, wherein base blocks are fixedly installed around the bottom end of the bottom plate 7, and a clamping protection component 16 is provided between the base blocks and is placed at the center of the bottom end of the bottom plate 7.

[0028] The first accommodating chamber 11 provides a corresponding storage space for the battery shell 1, and also ensures a good insulation effect. Even if the battery cell leaks, the current will not be conducted, ensuring the safety of the device. The setting of the second accommodating chamber 12 can facilitate the formation of a buffer space to improve the protection of the battery after installation, and avoid the force generated by the collision directly acting on the battery in the event of an accidental collision. In addition, the side panel 13 rotatably connected to the rectangular frame 6 can, on the one hand, be rotated and stored and adjusted by a hinge to reduce the excessive space resources occupied when not in use. On the other hand, the number of connected mounting holes 15 can be expanded through the first telescopic plate 14, thereby facilitating movement and corresponding positioning and installation work. The stability of the structural connector can be effectively improved through the selective multi-point connection method.

[0029] The battery shell 1, top cover 2 and frame assembly 5 of the present invention are effectively snap-fitted and installed through the stepped groove on the rectangular frame 6 and the extended end on the top cover 2. The insulating support plate 10 on the inner wall of the rectangular frame 6 cooperates with the insulating sealing plate 9 to increase the insulation of the battery accommodating space, which can effectively reduce the danger of current leakage when the power battery leaks during use, and improve the safety performance of the power battery placement frame assembly 5. The second accommodating cavity 12 inside the rectangular frame 6 can be filled with elastic material. Even in the case that the insulating support plate 10 is damaged, the elastic material can have a corresponding buffering effect while ensuring its support connection, thereby further improving the safety of the device.

[0030] The mounting assembly on the frame assembly 5 not only provides corresponding storage space for the outside of the battery shell 1, but also plays a good insulation protection role. The entire structure is easy to install and simple to operate. The side panels 8 set on the rectangular frame 6 can further improve the stability of the device connection, and can also provide better protection for the outside of the battery, thereby ensuring the safety of battery storage.

[0031] Example 2

[0032] Reference Manual Attached Figure 1 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 8 The clamping protection assembly 16 includes a first motor 17 and a second motor 18 disposed at the top and bottom ends of the inner wall of the cover body, the output shaft of the first motor 17 and the output shaft of the second motor 18 extend to the first rotating tooth 19 and the second rotating tooth 20 respectively, and a partition 21 on the inner wall of the cover body is provided between the first rotating tooth 19 and the second rotating tooth 20; wherein, rolling grooves connected to the first rotating tooth 19 and the second rotating tooth 20 are provided at both ends of the outer wall of the partition 21, and the output shaft of the first motor 17 and the central axis of the first rotating tooth 19 and the central axis of the output shaft of the second motor 18 and the central axis of the second rotating tooth 20 are locked and fixed by couplings.

[0033] Both ends of the first rotating tooth 19 are meshed with a first gear plate 22 , one end of the first gear plate 22 is connected to a beam 24 via a first bracket 23 penetrating the cover body, and both ends of the beam 24 are fixedly mounted on a first protective plate 25 away from the first bracket 23 .

[0034] Both ends of the second rotating tooth 20 are meshed with a second gear plate 26, one end of the second gear plate 26 is connected to a stopper 28 through a second bracket 27 that penetrates the cover body, both ends of the stopper 28 are fixedly mounted on a second protective plate 29 away from the second bracket 27, and both ends of the second protective plate 29 are movably connected with a second telescopic plate 30 that matches it, and the second telescopic plate 30 is in contact with and fits against the outer wall of the first protective plate 25.

[0035] When encountering a battery with a longer length and a smaller width, the second motor 18 is started to drive the movement of the second rotating tooth 20. Through the meshing transmission between the gears, the second protective plate 29 connected to the second bracket 27 on the second gear plate 26 moves in the opposite direction away from the center of the rectangular frame 6 to adapt to the longer battery. At the same time, the first motor 17 is started to drive the rotation of the first rotating tooth 19. Through the meshing transmission between the gears, the first protective plate 25 on the first bracket 23 moves inward to the center to adapt to the smaller battery. In addition, during the process of the first protective plate 25 moving inward to the center, even if it is in conflict with the second protective plate 29, due to the movable setting of the second telescopic plate 30 on the second protective plate 29, the second protective plate 29 can move normally horizontally to avoid interference between the two.

[0036] When encountering a battery with a shorter length and a larger width, the first motor 17 is started to drive the first rotating tooth 19 to rotate, and the first protective plate 25 on the first bracket 23 moves away from the center of the rectangular frame 6 through the meshing transmission between the gears, so as to adapt to the battery with a larger width. At the same time, the second motor 18 is started to drive the movement of the second rotating tooth 20, and the meshing transmission between the gears makes the second protective plate 29 connected to the second bracket 27 on the second gear plate 26 move in the opposite direction toward the center of the rectangular frame 6 to adapt to the battery with a shorter length.

[0037] Through the coordinated movement of the transmission parts and the telescopic parts, it is possible to adapt to the clamping work of batteries of different sizes. The transmission clamping parts are connected to each other in a coordinated manner to avoid mutual interference, and can truly adapt to the installation and clamping actions of batteries of different sizes. Instead of traditional clamping parts, which only achieve clamping on both sides or achieve multilateral clamping through multiple transmission mechanisms, or are unable to perform comprehensive and effective clamping and fixing of the battery, the present invention can achieve effective fixation of all sides of the battery through the transmission parts, thereby facilitating the clamping work of the battery and improving the stability of the structural connection.

[0038] The clamping protection component 16 is provided with a first motor 17 and a second motor 18. The first motor 17 and the second motor 18 drive their respective transmission parts, so that the corresponding first protective plate 25 and the second protective plate 29 can move horizontally in the Y-axis direction and the X-axis direction respectively. At the same time, the second protective plate 29 is provided with a second telescopic plate 30 that is in contact with the first protective plate 25. There will be no interference between the second protective plate 29 and the first protective plate 25 during the movement. In this way, batteries of different sizes can be adaptively clamped and fixed, thereby improving the stability of the connection and facilitating effective clamping work.

[0039] A clamping cavity is formed between the first protective plate 25, the second protective plate 29 and the second telescopic plate 30, and the bottom plate 7 is respectively provided with a first slide groove 31 and a second slide groove 32 connected to the first bracket 23 and the second bracket 27, and the insulating support plate 10 is provided with a movable opening 33 connected to the second bracket 27. The first protective plate 25 and the second protective plate 29 are kept vertically arranged. As the first rotating tooth 19 and the second rotating tooth 20 rotate, the first bracket 23 drives the first protective plate 25 to move horizontally in the opposite direction of the Y axis, and the second bracket 27 drives the second telescopic plate 30 on the second protective plate 29 to move horizontally in the opposite direction of the X axis, so that the first protective plate 25 and the second protective plate 29 can be fitted or separated from the battery shell 1.

[0040] The output shaft of the first motor 17 and the output shaft of the second motor 18 extend to the first rotating tooth 19 and the second rotating tooth 20 respectively. A partition plate 21 on the inner wall of the cover body is provided between the first rotating tooth 19 and the second rotating tooth 20. The partition plate 21 on the inner wall of the cover body can divide the inside of the cover body into two active areas, so that the transmission parts connected to the first motor 17 and the second motor 18 can perform their own movements to avoid affecting the work of their respective transmission parts. In addition, the rolling groove on the partition plate 21 also provides corresponding rotation support force for the first rotating tooth 19 and the second rotating tooth 20 to prevent position deviation during rotation. In the case of the first motor 17 output shaft and the center shaft of the first rotating tooth 19, and the second motor 18 output shaft and the center shaft of the second rotating tooth 20 are locked and fixed by the coupling, and the center shaft and the output shaft are locked and fixed by the coupling, and rotate together during the transmission of motion and power, and also serve as a safety device to prevent the connected parts from being subjected to excessive loads, play a role in overload protection, and are also used to firmly connect the center shafts of different mechanisms and the output shafts of the first motor 17 and the second motor 18 to rotate together and transmit motion and torque. Example 3 Refer to the attached manual Figure 1 , Attachment Figure 2 , Attachment Figure 4 and attached Figure 5, a liquid filling hole screw plug 34 is connected to the top of the battery shell 1, and a wire connection hole extending to the inside of the battery shell 1 is provided on the rectangular frame 6, and a first slide groove 31 and a second slide groove 32 connected to the first bracket 23 and the second bracket 27 are respectively provided on the bottom plate 7, and a movable opening 33 connected to the second bracket 27 is provided on the insulating support plate 10, and the first protective plate 25 and the second protective plate 29 are vertically arranged. The first slide groove 31 and the second slide groove 32 provided on the bottom plate 7 not only provide corresponding activity space for the first bracket 23 and the second bracket 27, but also prevent the first bracket 23 and the second bracket 27 from deviating from their positions during horizontal activities. In addition, since the second bracket 27 will contact the insulating support plate 10 when it moves, in order to allow the second bracket 27 to move normally horizontally, a movable opening 33 is provided on the insulating support plate 10, so that the second bracket 27 can move freely, which can ensure the normal movement of the entire transmission member. Bolt assemblies are arranged around the side enclosure 8 and at the connection between the bottom plate 7, and the bolt assemblies can be screwed until they are in contact with the top of the bottom plate 7. The bolt assemblies can facilitate the reinforcement operation of the installed rectangular frame 6 to ensure that the frame assembly 5 is installed stably. Side panels 13 rotatably connected by hinges are also arranged on the outer side of the rectangular frame 6. The side panels 13 are hollow and movably connected to the first telescopic plate 14. At the same time, a number of mounting holes 15 are provided on the side panels 13 and the first telescopic plate 14. By setting the side panels 13, the movement of the frame assembly 5 and the subsequent installation of the battery can be facilitated. At the same time, the side panel 13 structural parts can be rotated and stored, thereby reducing space occupied when not in use. The vertical center axes of the output shaft of the first motor 17 and the center axis of the first rotating tooth 19 are maintained on the same axis. This arrangement can ensure the stability of the transmission on the one hand, and can effectively transfer the rotational torque of the output shaft to the first rotating tooth 19 on the other hand. The first protective plate 25 and the second protective plate 29 are maintained in a vertical arrangement. The above-mentioned vertical arrangement allows the rectangular clamping assembly to fully clamp the battery. The first bracket 23 drives the first protective plate 25 to move horizontally in the opposite direction of the Y-axis, and the second bracket 27 drives the second telescopic plate 30 on the second protective plate 29 to move horizontally in the opposite direction of the X-axis. The above-mentioned transmission parts can effectively divide and wrap the clamping area through the movement in the X-axis and Y-axis directions, so that all-round clamping and fixing work can be performed, improving the stability of the structural connection and the application effect of the device. In summary, the beneficial effects of the present invention include at least:

[0041] The battery case 1, the top cover 2 and the frame assembly 5 of the present invention are effectively mounted by the stepped groove on the rectangular frame 6 and the extended end on the top cover 2. The insulating support plate 10 on the inner wall of the rectangular frame 6 cooperates with the insulating sealing plate 9 to increase the insulation of the battery accommodating space, which can effectively reduce the danger of current leakage when the power battery is in use and the battery cell leaks, thereby improving the safety performance of the power battery placement frame assembly 5. The second accommodating cavity 12 inside the rectangular frame 6 can be filled with elastic material. In this way, even if the insulating support plate 10 is damaged, the elastic material can have a corresponding buffering effect while ensuring its support connection, thereby further improving the safety of the device; Lateral Bolt assemblies are provided at the connection between the surrounding plate 8 and the bottom plate 7, and the bolt assemblies can be screwed until they are in contact with the top of the bottom plate 7. The bolt assemblies can facilitate the reinforcement operation of the installed rectangular frame 6 to ensure that the frame assembly 5 is installed stably. Side panels 13 rotatably connected by hinges are also provided on the outer side of the rectangular frame 6. The side panels 13 are hollow and movably connected to the first telescopic plate 14. At the same time, a number of mounting holes 15 are provided on the side panels 13 and the first telescopic plate 14. By providing the side panels 13, the movement of the frame assembly 5 and the subsequent installation of the battery can be facilitated. At the same time, the side panel structural parts can be rotated and stored, thereby reducing space occupied when not in use. 3. The clamping protection component 16 is provided with a first motor 17 and a second motor 18. The first motor 17 and the second motor 18 drive their respective transmission parts, so that the corresponding first protective plate 25 and the second protective plate 29 can move horizontally in the Y-axis direction and the X-axis direction respectively. At the same time, the second protective plate 29 is provided with a second telescopic plate 30 which is in contact with the first protective plate 25. There will be no interference between the second protective plate 29 and the first protective plate 25 during the movement. In this way, batteries of different sizes can be adaptively clamped and fixed, the stability of the connection is improved, and effective clamping work is facilitated.

Claims

1. An automotive power battery, characterized in that: The battery case comprises a battery shell, a top cover snap-fitted on the battery shell, a positive electrode column and a negative electrode column placed on both sides of the top of the battery shell, and a frame assembly, wherein a protrusion is provided on the bottom edge of the top cover, the protrusion is connected to the embedding groove at the top of the battery shell, and a liquid filling hole plug extending to the inside of the battery shell is provided on the top cover; the bottom ends of the positive electrode column and the negative electrode column both penetrate the battery shell and extend to the bus bar inside the battery shell, and the bus bar is provided with positive and negative plates adapted thereto in the length direction, and the frame assembly comprises a rectangular frame placed outside the battery shell, a bottom The top of the rectangular frame is provided with stepped grooves connected to the extended ends of the top cover on both sides, the bottom end of the rectangular frame is sleeved in the notch on the bottom plate, the top of the bottom plate is provided with lateral enclosures placed on the outer wall of the rectangular frame, wherein the connection between the lateral enclosures and the bottom plate is provided with positioning holes and is locked and fixed by bolt assemblies, and the top of the rectangular frame is snap-connected with an insulating sealing plate; base blocks are fixedly installed around the bottom end of the bottom plate, and a clamping protection assembly is provided between the base blocks and is placed at the center of the bottom end of the bottom plate, and the clamping protection assembly includes a clamping protection assembly placed at the top end of the inner wall of the cover body, and a clamping protection assembly is provided at the top end of the inner wall of the cover body. and a first motor and a second motor at the bottom end and a first rotating tooth and a second rotating tooth, the output shaft of the first motor and the output shaft of the second motor extend to the first rotating tooth and the second rotating tooth respectively, and a partition on the inner wall of the cover body is provided between the first rotating tooth and the second rotating tooth; wherein, rolling grooves connected to the first rotating tooth and the second rotating tooth are provided at both ends of the outer wall of the partition, and the output shaft of the first motor and the central axis of the first rotating tooth and the output shaft of the second motor and the central axis of the second rotating tooth are locked and fixed by a coupling, both ends of the first rotating tooth are meshed with a first gear plate for transmission, one end of the first gear plate is connected to a cross beam through a first bracket penetrating the cover body, and both ends of the cross beam are fixedly mounted on the first protective plate away from the first bracket; both ends of the second rotating tooth are meshed with a second gear plate for transmission, one end of the second gear plate is connected to a stopper through a second bracket penetrating the cover body, and both ends of the stopper are fixedly mounted on the second protective plate away from the second bracket, and both ends of the second protective plate are movably connected with a second telescopic plate adapted thereto, and the second telescopic plate is in contact with and fits against the outer wall of the first protective plate.

2. The automotive power battery according to claim 1, characterized in that: An insulating support plate is integrally formed and installed on the inner wall of the rectangular frame, a first accommodating cavity is formed between the insulating support plate, the insulating sealing plate and the inner wall of the rectangular frame, a second accommodating cavity is formed between the insulating support plate, the bottom plate and the inner wall of the rectangular frame, and both ends of the outer wall of the rectangular frame are rotatably connected to side panels by hinges, the inside of the side panel is hollow and both ends are movably connected to the first telescopic plate, and the side panel and the first telescopic plate are provided with mounting holes connected to the external panel.

3. The automotive power battery according to claim 2, characterized in that: A clamping cavity is formed between the first protective plate, the second protective plate and the second telescopic plate, a first slide groove and a second slide groove connected to the first bracket and the second bracket are respectively provided on the bottom plate, and a movable opening connected to the second bracket is provided on the insulating support plate.

4. The automotive power battery according to claim 3, characterized in that: The first protective plate and the second protective plate are kept vertically arranged. As the first rotating tooth and the second rotating tooth rotate, the first bracket drives the first protective plate to move horizontally in the opposite direction of the Y-axis, and the second bracket drives the second telescopic plate on the second protective plate to move horizontally in the opposite direction of the X-axis, so that the first protective plate and the second protective plate can be fitted with or separated from the battery shell.

5. The automotive power battery according to claim 1, characterized in that: The rectangular frame is provided with a wire connection hole extending to the interior of the battery shell.

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