A lifting tool for the protective bottom shell of an electric vehicle battery
By introducing pneumatic thrust mechanism and body transfer mechanism into the battery bottom case hoisting equipment, the equipment can be automatically moved and loaded at intervals, solving the problem of long preparation time for existing equipment and improving the efficiency of battery bottom cover processing.
Patent Information
- Application Number
- CN202211596498.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-12
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2042-12-12
AI Technical Summary
Due to the single structure of the existing battery bottom shell hoisting equipment, it requires manual transfer and loading, resulting in a long preparation time for the equipment, affecting the efficiency of the bottom shell packaging.
An electric vehicle battery protective bottom shell lifting tool is designed, using a pneumatic material pushing mechanism and body transfer mechanism to realize the equipment's independent movement and spaced loading, reducing manual operation.
Through autonomous movement and spaced loading, the time for each preparation of the equipment is shortened, the efficiency of battery back cover processing is improved, and it is suitable for battery back cover processing of multiple cars on the assembly line.
Smart Images

Figure CN115922269B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power battery auxiliary equipment, in particular to a lifting tool for a protective bottom shell of an electric vehicle battery. Background Art
[0002] Power batteries are power sources for tools, mostly referring to batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. They are mainly different from starting batteries used to start car engines. They are mostly valve-sealed lead-acid batteries, open-mouth tubular lead-acid batteries, and lithium iron phosphate batteries. They are used in electronic equipment and electric toys that require high-energy and high-power power sources, and have shown very superior performance. Above medium discharge current, the discharge time of lithium-iron batteries can reach about 6 times that of alkaline manganese batteries, and compared with nickel-hydrogen batteries, their discharge voltage is stable and their storage time has significant advantages.
[0003] With the continuous development of science and technology, the popularity of new energy vehicles is increasing year by year. The most core part of this type of vehicle is the energy supply component, that is, the power battery. Since the battery contains multiple groups of energy storage components and the material used has a low hardness, it is easy to be damaged by various external factors. Therefore, when assembling the battery, a metal shell with higher hardness is needed to protect the internal structure.
[0004] However, the existing battery bottom shell lifting equipment has the following shortcomings:
[0005] The power battery is located in the middle of the car. Because it occupies a large area, the steps of battery assembly are: fixing the outer shell, placing the energy storage components and packaging the bottom shell. The bottom shell packaging requires the use of jacking equipment, but due to the single structure of the existing equipment, manual transfer and loading are required each time it is used. However, with the gradual maturity of automation technology, the operation method at this time cannot match the production progress of the assembly line car manufacturing factory, resulting in a long time consumed for each equipment preparation, which seriously affects the efficiency of the bottom shell packaging.
[0006] Therefore, we proposed a lifting tool for the protective bottom shell of the electric vehicle battery to solve the above-mentioned problems. Summary of the invention
[0007] The purpose of the present invention is to provide a lifting tool for the protective bottom shell of an electric vehicle battery. Through a pneumatic pushing mechanism and a body transfer mechanism connected to an assembly base, when the equipment is working, the driving component in the body transfer mechanism is turned on, so that the active roller obtains the power of rotation, and under the continuous rotation of the traveling track, the equipment as a whole stably moves toward the bottom of the hoisting car. When the equipment reaches the specified position, the driving component in the pneumatic pushing mechanism is turned on to drive the extended push plate on the connecting plate to move forward, so that the extended push plate gradually extends to the inside of the receiving bin. When the front end of the extended push plate contacts the surface of one of the packaging bottom shells, the thrust generated will continue to push the packaging bottom shell out of the inside of the receiving bin. Because the top of the material placement tray is parallel to the load-bearing base in the initial state, and then when the extended push plate is extended to the maximum range, the pushed packaging bottom shell is completely transferred to the lifting mechanism.
[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a lifting tool for a protective bottom shell of an electric vehicle battery, comprising an assembly base, an extension baffle being welded to one side of an outer wall of the assembly base;
[0009] A pneumatic material pushing mechanism is arranged on the top of the extension baffle, a positioning lifting mechanism is arranged on the top of the assembly base, and an organism transfer mechanism is contained inside the assembly base;
[0010] The pneumatic pushing mechanism comprises an L-shaped metal frame, a rectangular groove is provided inside the L-shaped metal frame, a pneumatic push rod is fixedly installed on the inner surface wall of the rectangular groove, a locking collar is welded on the output end of the pneumatic push rod, an inner connecting rod is fixedly inserted on the inner surface wall of the locking collar, a connecting plate is fixedly sleeved on the outer wall of the inner connecting rod, an extended pushing plate is fixedly installed on the top of the connecting plate by screws, a reinforcing plate is fixedly installed on the top of the assembly base, a load-bearing base is provided on the top of the reinforcing plate, a material receiving bin is welded on the top of the load-bearing base, and a plurality of packaging bottom shells are placed inside the material receiving bin;
[0011] The body transfer mechanism includes two linkage rods, and the outer walls of the two linkage rods are fixedly sleeved with active rollers. Internal connecting rods A and internal connecting rods B are fixedly inserted on both sides of the outer wall of the assembly base, and the outer walls of the two internal connecting rods A and the internal connecting rod B are movably sleeved with driven rollers A and driven rollers B respectively, and a traveling track is movably sleeved between the outer walls of each of the active rollers, driven rollers A and driven rollers B.
[0012] Preferably, a metal slide rail is welded to the top of the extended baffle plate, and a T-shaped slider is fixedly installed on the bottom of the connecting plate. The outer wall of the T-shaped slider is movably inserted into the interior of the metal slide rail. The metal slide rail is set, and the movable connection between the metal slide rail and the T-shaped slider is utilized. When the extended push plate moves laterally, the T-shaped slider can effectively limit the left and right shaking amplitude thereof, thereby improving the stability of the extended push plate when pushing materials.
[0013] Preferably, an inner groove A is provided on the outer wall of the material receiving bin, and the inner wall width of the inner groove A is matched with the outer wall width of the extended push plate. Through the matching of the inner groove A and the extended push plate, the extended push plate can be flexibly moved inside the material receiving bin.
[0014] Preferably, an inner groove B is formed at the bottom of the assembly base, and a grafting plate is fixedly installed on the top of the inner wall of the inner groove B, and forward and reverse servo motors are fixedly installed on both sides of the outer wall of the grafting plate. The output ends of the two forward and reverse servo motors are respectively connected to one end of the outer wall of the linkage rod. The forward and reverse servo motors can provide continuous power support for the equipment and provide conditions for the transfer of the jacking mechanism.
[0015] Preferably, the positioning and lifting mechanism includes two mounting holes, and the two mounting holes are both opened on the top of the assembly base. The inner surfaces of the two mounting holes are fixedly installed with external connecting rings, and the inner surfaces of the two external connecting rings are fixedly inserted with a group of connecting blocks. A connecting ring is fixedly sleeved between the outer surfaces of the two groups of connecting blocks. The connecting ring is provided to fix the driving components of the mechanism and limit the longitudinal swing amplitude generated when the hydraulic rod is working.
[0016] Preferably, a hydraulic rod is fixedly inserted into the inner wall of the two connecting rings, and a reinforcing buckle is fixedly sleeved on the output end of the two hydraulic rods. A load-bearing support plate is fixedly installed between the tops of the two reinforcing buckles. The provision of the reinforcing buckles can increase the connection strength between the hydraulic rod and the load-bearing support plate, thereby avoiding structural breakage caused by extended service life of the equipment.
[0017] Preferably, an inner open ring groove A is opened at the top center of the load-bearing support plate, and a material placement tray is fixedly installed on the inner surface wall of the inner open ring groove A. The provision of the material placement tray can increase the loading area of the mechanism and reduce the limitations of the use of the equipment.
[0018] Preferably, an inner open ring groove B is opened at the top center of the material placement tray, and a powered magnetic disk is fixedly installed inside the inner open ring groove B. The wiring terminal of the powered magnetic disk is connected to the internal wiring in the assembly base. The powered magnetic disk is set to fix the bottom shell of the package to be processed by utilizing the principle of electromagnetic adsorption, so that it will fall off when it is lifted, causing damage to the workpiece.
[0019] Preferably, the bottom of the L-shaped metal frame is fixedly mounted on the top of the extended baffle, and the outer walls of the two linkage rods are movably inserted on both sides of the outer wall of the assembly base to determine the connection relationship between the L-shaped metal frame and the linkage rod and the entire equipment.
[0020] Compared with the prior art, the present invention has the following beneficial effects:
[0021] The present invention is provided with a pneumatic material pushing mechanism and a machine body transfer mechanism. When the equipment is working, the driving component in the machine body transfer mechanism is turned on, so that the active roller obtains the power of rotation. Because the traveling crawler is fully in contact with the driven roller B, the traction force generated by the rotation of the traveling crawler will gradually drive the driven roller A and the driven roller B to rotate synchronously, so that the whole equipment moves stably toward the bottom of the hoisting car. When the equipment reaches the specified position, the driving component in the pneumatic material pushing mechanism is turned on to drive the extended push plate on the connecting plate to move forward, so that the extended push plate gradually extends to the inside of the receiving bin. When the front end of the extended push plate is in contact with the After the surface of a packaging bottom shell is contacted, the thrust generated will continue to push the packaging bottom shell out of the interior of the receiving bin. Because the top of the loading tray is parallel to the load-bearing base in the initial state, and then when the extended push plate is extended to the maximum range, the pushed packaging bottom shell is completely transferred to the lifting mechanism. The mechanism adopts mechanical transmission to realize autonomous movement and intermittent loading of the equipment, replacing the disadvantages of manual operation, effectively solving the shortcomings of the above-mentioned background technology, shortening the time consumed by each preparation of the equipment, and quickly performing battery bottom sealing processing on multiple cars included in an assembly line, thereby improving the workmanship efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a main structural stereogram of a lifting tool for a battery protective bottom shell of an electric vehicle according to the present invention;
[0023] Figure 2 This is a side structural stereogram of a lifting tool for a battery protective bottom shell of an electric vehicle according to the present invention;
[0024] Figure 3 A three-dimensional diagram of the bottom structure of a lifting tool for the protective bottom shell of an electric vehicle battery according to the present invention;
[0025] Figure 4 It is an enlarged stereoscopic view of the structure of a pneumatic material pushing mechanism in a lifting tool for a protective bottom shell of an electric vehicle battery according to the present invention;
[0026] Figure 5 It is an enlarged stereoscopic view of the positioning and lifting mechanism structure in a lifting tool for the protective bottom shell of an electric vehicle battery of the present invention;
[0027] Figure 6 The present invention is a lifting tool for the protective bottom shell of an electric vehicle battery. Figure 4 A magnified stereoscopic image of the structure at center A;
[0028] Figure 7 The present invention is a lifting tool for the protective bottom shell of an electric vehicle battery. Figure 2 Enlarged stereoscopic image of the structure at point B in the middle.
[0029] In the figure:
[0030] 1. Assemble the base;
[0031] 2. Extended baffle;
[0032] 3. Pneumatic push mechanism; 301. L-shaped metal frame; 302. Rectangular groove; 303. Pneumatic push rod; 304. Locking ring; 305. Internal connecting rod; 306. Connecting plate; 307. Extended push plate; 308. Metal slide rail; 309. T-shaped slide block; 310. Reinforcement plate; 311. Load-bearing base; 312. Material storage bin; 313. Encapsulation bottom shell;
[0033] 4. Positioning and lifting mechanism; 401. Installation hole; 402. External connecting ring; 403. Connecting block; 404. Connecting ring; 405. Hydraulic rod; 406. Load-bearing support plate; 407. Inner open ring groove A; 408. Material tray; 409. Inner open ring groove B; 410. Power-on magnetic disk;
[0034] 5. Machine body transfer mechanism; 501. Linkage rod; 502. Active roller; 503. Driven roller A; 504. Driven roller B; 505. Traveling track; 506. Grafting plate; 507. Forward and reverse servo motor. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not 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.
[0036] See also Figure 1 - Figure 7 As shown, the present invention provides a technical solution: a lifting tool for the protective bottom shell of an electric vehicle battery, comprising an assembly base 1, an extension baffle 2 is welded on one side of the outer wall of the assembly base 1, a pneumatic pushing mechanism 3 is arranged on the top of the extension baffle 2, a positioning lifting mechanism 4 is arranged on the top of the assembly base 1, and the interior of the assembly base 1 contains an organism transfer mechanism 5.
[0037] according to Figure 1 - Figure 2 and Figure 4As shown, the pneumatic pushing mechanism 3 includes an L-shaped metal frame 301, a rectangular groove 302 is opened inside the L-shaped metal frame 301, a pneumatic push rod 303 is fixedly installed on the inner surface wall of the rectangular groove 302, a locking ring 304 is welded on the output end of the pneumatic push rod 303, an inner connecting rod 305 is fixedly inserted on the inner surface wall of the locking ring 304, a connecting plate 306 is fixedly sleeved on the outer wall of the inner connecting rod 305, an extended pushing plate 307 is fixedly installed on the top of the connecting plate 306 by screws, a reinforcing plate 310 is fixedly installed on the top of the assembly base 1, a load-bearing base 311 is arranged on the top of the reinforcing plate 310, a material receiving bin 312 is welded on the top of the load-bearing base 311, and a plurality of packaging bottom shells 313 are placed inside the material receiving bin 312.
[0038] according to Figure 1 - Figure 3 As shown, the body transfer mechanism 5 includes two linkage rods 501, and the outer walls of the two linkage rods 501 are fixedly sleeved with active rollers 502, and both sides of the outer wall of the assembly base 1 are fixedly inserted with inner connecting rods A and inner connecting rods B, and the outer walls of the two inner connecting rods A and inner connecting rods B are movably sleeved with driven rollers A503 and driven rollers B504 respectively, and a traveling track 505 is movably sleeved between the outer walls of each active roller 502, driven roller A503 and driven roller B504.
[0039] according to Figure 4 and Figure 6 As shown, a metal slide rail 308 is welded on the top of the extended baffle 2, and a T-shaped slider 309 is fixedly installed on the bottom of the connecting plate 306. The outer wall of the T-shaped slider 309 is movably inserted into the inside of the metal slide rail 308. By setting the metal slide rail 308 and utilizing the movable connection between the metal slide rail 308 and the T-shaped slider 309, when the extended push plate 307 moves laterally, the T-shaped slider 309 can effectively limit the left and right shaking amplitude thereof, thereby improving the stability of the extended push plate 307 when pushing materials.
[0040] according to Figure 4 and Figure 7 As shown, the outer wall of the material receiving bin 312 is provided with an inner groove A, and the inner wall width of the inner groove A is adapted to the outer wall width of the extended push plate 307. Through the matching of the inner groove A and the extended push plate 307, the extended push plate 307 can be flexibly moved inside the material receiving bin 312.
[0041] according to Figure 3As shown, an inner groove B is provided at the bottom of the assembly base 1, and a grafting plate 506 is fixedly installed on the top of the inner wall of the inner groove B, and forward and reverse servo motors 507 are fixedly installed on both sides of the outer wall of the grafting plate 506. The output ends of the two forward and reverse servo motors 507 are respectively connected to one end of the outer wall of the linkage rod 501. By setting the forward and reverse servo motors 507, continuous power support can be provided for the equipment, providing conditions for the transfer of the jacking mechanism.
[0042] according to Figure 1 - Figure 2 and Figure 5 As shown, the positioning and lifting mechanism 4 includes two mounting holes 401, and the two mounting holes 401 are both opened on the top of the assembly base 1. The inner surface walls of the two mounting holes 401 are fixedly installed with external rings 402, and the inner surface walls of the two external rings 402 are fixedly inserted with a group of connecting blocks 403. A connecting ring 404 is fixedly sleeved between the outer walls of the two groups of connecting blocks 403. By setting the connecting ring 404, it is used to fix the mechanism driving components and limit the longitudinal swing amplitude generated by the hydraulic rod 405 during operation.
[0043] according to Figure 5 As shown, hydraulic rods 405 are fixedly inserted into the inner walls of the two connecting rings 404, and reinforcing buckles are fixedly sleeved on the output ends of the two hydraulic rods 405. A load-bearing support plate 406 is fixedly installed between the tops of the two reinforcing buckles. By providing the reinforcing buckles, the connection strength between the hydraulic rods 405 and the load-bearing support plate 406 can be increased to avoid structural breakage caused by prolonged equipment service life.
[0044] according to Figure 5 As shown, an inner open ring groove A407 is opened at the top center of the load-bearing support plate 406, and a material placement tray 408 is fixedly installed on the inner surface wall of the inner open ring groove A407. By setting the material placement tray 408, the loading area of the mechanism can be increased and the limitations of the use of the equipment can be reduced.
[0045] according to Figure 5 As shown, an inner open ring groove B409 is opened at the top center of the material placement tray 408, and a powered magnetic disk 410 is fixedly installed inside the inner open ring groove B409. The wiring terminals of the powered magnetic disk 410 are connected to the internal wiring in the assembly base 1. By setting the powered magnetic disk 410 and utilizing the principle of electromagnetic adsorption, the bottom shell 313 to be processed is fixed, and it may fall off when it is placed and lifted, causing damage to the workpiece.
[0046] according to Figure 1 - Figure 3 As shown, the bottom of the L-shaped metal frame 301 is fixedly installed on the top of the extended baffle 2, and the outer walls of the two linkage rods 501 are movably inserted on both sides of the outer wall of the assembly base 1 to determine the connection relationship between the L-shaped metal frame 301 and the linkage rods 501 and the entire equipment.
[0047] The effect achieved by the entire mechanism is: multiple packaging bottom shells 313 of specified sizes are placed in the interior of the receiving bin 312 in sequence, the forward and reverse servo motors 507 in the grafting plate 506 are turned on, and act on the linkage rod 501, so that the active roller 502 obtains the power of rotation. Since the traveling track 505 is in full contact with the driven roller B504, the traction force generated by the rotation of the traveling track 505 will gradually drive the driven roller A503 and the driven roller B504 to rotate synchronously, so that the whole equipment can move stably toward the bottom of the lifting vehicle.
[0048] When the equipment reaches the designated position, the pneumatic push rod 303 in the rectangular groove 302 is opened and acts on the inner connecting rod 305 in the locking collar 304, driving the extended push plate 307 on the connecting plate 306 to move forward, so that the extended push plate 307 gradually extends to the interior of the receiving bin 312. When the front end of the extended push plate 307 contacts the surface of one of the packaging bottom shells 313, the thrust generated will continue to push the packaging bottom shell 313 out of the receiving bin 312. Because the top of the material tray 408 is parallel to the load-bearing base 311 in the initial state, when the extended push plate 307 is extended to the maximum range, the pushed packaging bottom shell 313 is completely transferred to the surface of the powered magnetic disk 410.
[0049] Subsequently, the extended push plate 307 is gradually evacuated from the interior of the material receiving bin 312 under the action of the rectangular groove 302. At this time, the other packaging bottom shells 313 fall downward under the action of gravity. At the same time, the powered magnetic disk 410 in the inner open ring groove B409 is turned on. The magnetic material attracts the metal material, and the magnetic force generated on its surface will fully adsorb the bottom of the packaging bottom shell 313 to the surface of the inner open ring groove B409 to prevent the packaging bottom shell 313 from falling off during jacking.
[0050] The hydraulic rod 405 in the connecting ring 404 is further opened, and the packaging bottom shell 313 on the inner open ring groove B409 is driven to move upward at a uniform speed until the top of the packaging bottom shell 313 is fully in contact with the bottom of the protective shell. At this time, the operator uses the designated fixing parts to completely fix the packaging bottom shell 313 to the protective shell, turns off the powered magnetic disk 410, and opens the hydraulic rod 405 again to restore the inner open ring groove B409 to its original position. The equipment is further transferred to the bottom of the next car through the above method, and the bottom sealing process of the car battery is completed.
[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A lifting tool for the protective bottom shell of an electric vehicle battery, characterized in that: It comprises an assembly base (1), an extension baffle (2) being welded to one side of an outer wall of the assembly base (1); A pneumatic material pushing mechanism (3) is arranged on the top of the extension baffle (2), a positioning lifting mechanism (4) is arranged on the top of the assembly base (1), and an organism transfer mechanism (5) is contained inside the assembly base (1); The pneumatic push mechanism (3) comprises an L-shaped metal frame (301), a rectangular groove (302) is provided inside the L-shaped metal frame (301), a pneumatic push rod (303) is fixedly mounted on the inner surface wall of the rectangular groove (302), a locking collar (304) is welded to the output end of the pneumatic push rod (303), an inner connecting rod (305) is fixedly inserted into the inner surface wall of the locking collar (304), a connecting plate (306) is fixedly sleeved on the outer wall of the inner connecting rod (305), an extended push plate (307) is fixedly mounted on the top of the connecting plate (306) by screws, a reinforcing plate (310) is fixedly mounted on the top of the assembly base (1), a load-bearing base (311) is provided on the top of the reinforcing plate (310), a material receiving bin (312) is welded to the top of the load-bearing base (311), and a plurality of packaging bottom shells (313) are placed inside the material receiving bin (312); The machine body transfer mechanism (5) comprises two linkage rods (501), the outer surfaces of the two linkage rods (501) are fixedly sleeved with driving rollers (502), the outer walls of the assembly base (1) are fixedly inserted with inner connecting rods A and inner connecting rods B on both sides of the outer wall, and the outer surfaces of the two inner connecting rods A and inner connecting rods B are movably sleeved with driven rollers A (503) and driven rollers B (504), respectively, and the outer surfaces of each of the driving rollers (502), driven rollers A (503) and driven rollers B (504) are movably sleeved with traveling tracks (505); A metal slide rail (308) is welded to the top of the extended baffle (2), a T-shaped slider (309) is fixedly mounted to the bottom of the connecting plate (306), and the outer wall of the T-shaped slider (309) is movably inserted into the interior of the metal slide rail (308); an inner groove A is formed on the outer wall of the material receiving bin (312), and the inner wall width of the inner groove A is adapted to the outer wall width of the extended push plate (307).
2. The electric vehicle battery protective bottom shell lifting tool according to claim 1 is characterized in that: The positioning and lifting mechanism (4) comprises two mounting holes (401), the two mounting holes (401) are both opened at the top of the assembly base (1), the inner surface walls of the two mounting holes (401) are fixedly mounted with external connecting rings (402), the inner surface walls of the two external connecting rings (402) are fixedly inserted with a group of connecting blocks (403), and the outer surface walls of the two groups of connecting blocks (403) are fixedly sleeved with connecting rings (404).
3. The electric vehicle battery protective bottom shell lifting tool according to claim 2 is characterized in that: The inner surfaces of the two connecting rings (404) are both fixedly inserted with hydraulic rods (405), the output ends of the two hydraulic rods (405) are both fixedly sleeved with reinforcing buckles, and a load-bearing support plate (406) is fixedly installed between the tops of the two reinforcing buckles.
4. The electric vehicle battery protective bottom shell lifting tool according to claim 3 is characterized in that: An inner open ring groove A (407) is provided at the center of the top of the load-bearing support plate (406), and a material placement tray (408) is fixedly mounted on the inner surface wall of the inner open ring groove A (407).
5. The electric vehicle battery protective bottom shell lifting tool according to claim 4 is characterized in that: An inner open ring groove B (409) is provided at the top center of the material placement tray (408), and a powered magnetic disk (410) is fixedly installed inside the inner open ring groove B (409), and the wiring terminal of the powered magnetic disk (410) is connected to the internal wiring in the assembly base (1).
6. The electric vehicle battery protective bottom shell lifting tool according to claim 1 is characterized in that: The bottom of the L-shaped metal frame (301) is fixedly mounted on the top of the extended baffle (2), and the outer walls of the two linkage rods (501) are movably inserted on both sides of the outer wall of the assembly base (1).
Citation Information
Patent Citations
Electric vehicle battery protection bottom shell jacking tool
CN115848535A