Anti-overflow lithium battery liquid injection and weighing integrated device

Abstract

The invention relates to an anti-overflow lithium battery liquid injection and weighing integrated device which comprises a frame, a liquid injection assembly, a liquid stopping assembly, a bearing assembly and a weighing assembly, a bearing table is arranged on the frame, the bearing assembly comprises a bearing plate arranged on the bearing table in a sliding mode, and the liquid injection assembly comprises a liquid injection needle arranged above the bearing table in a sliding mode; the liquid stopping assembly comprises a plug arranged on a battery liquid injection opening and a liquid stopping block arranged on the plug in a sliding mode, ejector rods are arranged on the two sides of the liquid stopping block in a sliding mode, a buoy is arranged between the ejector rods, and the buoy is driven to ascend in the process that the liquid injection needle injects liquid into the battery, so that the ejector rods drive the liquid stopping block to move to wrap the liquid injection needle, and liquid injection is stopped; the weighing assembly comprises a weighing table arranged on the frame, the weighing table drives the bearing plate to be separated in the ascending process, so that the battery falls on the weighing table to be weighed, and the problem that the battery deviates from a battery liquid injection opening in the subsequent capping process due to the fact that the battery slightly deviates in the moving process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and specifically relates to a lithium battery liquid injection and weighing integrated device that prevents overflow. Background Art

[0002] The working principle of a lithium battery mainly depends on the movement of lithium ions between the positive electrode and the negative electrode. During charging, lithium ions are deintercalated from the positive electrode and embedded in the negative electrode through the electrolyte; during discharging, the opposite occurs. This working mechanism enables lithium batteries to have a high energy density and a long service life. As the battery is used for a longer time, the lithium ions in the electrolyte will gradually be consumed, which will lead to a reduction in battery performance or abnormal operation. In order to maintain the chemical reaction environment inside the battery, liquid injection becomes a necessary process.

[0003] A Chinese invention patent with the application publication number CN115036654A discloses a lithium battery liquid injection device, including: a conveying mechanism, a first reset mechanism, and a liquid injection mechanism provided on the first reset mechanism. The liquid injection mechanism can inject electrolyte into the lithium battery to be injected on the conveying mechanism; a pushing mechanism, and the output end of the pushing mechanism can push the liquid injection mechanism to move towards the conveying mechanism, realizing automatic liquid injection and having a relatively high production line operation efficiency; while realizing liquid injection, an insulating cover is added to the upper part of the lithium battery, reducing the subsequent processing workload of the lithium battery; compared with the prior art, this device realizes a complete assembly line operation with less power input, has a reasonable structure and strong practicability.

[0004] However, the inventor found that the device has the following problems: the battery will show a slight deviation during movement, resulting in a deviation from the battery liquid injection port during the subsequent capping process. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art by inventing a lithium battery liquid injection and weighing integrated device that prevents overflow. When the liquid injection needle injects liquid into the battery, the water surface of the electrolyte will drive the float to rise, the float will drive the top rod to rise, and the top rod will drive the liquid stop block to move to cover the liquid injection needle and stop liquid injection. During the process of the hydraulic cylinder driving the weighing assembly to rise, the rack drives the threaded rod to rotate, thereby driving the bearing plate to move so that the battery falls on the weighing platform to complete weighing, solving the problem that the battery will show a slight deviation during movement, resulting in a deviation from the battery liquid injection port during the subsequent capping process.

[0006] For the above technical problems, the technical solution adopted by the present invention is as follows: A lithium battery liquid injection and weighing integrated device for preventing overflow, including a frame, a liquid injection component, a liquid stop component, a bearing component, and a weighing component. A bearing platform is provided on the frame. The bearing component includes a bearing plate slidably arranged on the bearing platform. The liquid injection component includes a liquid injection needle slidably arranged above the bearing platform. The liquid stop component includes a plug arranged at the battery liquid injection port and a liquid stop block slidably arranged on the plug. Thrust rods are slidably arranged on both sides of the liquid stop block, and a float is arranged between the thrust rods. During the process of injecting liquid into the battery by the liquid injection needle, the float rises, thereby driving the liquid stop block to move through the thrust rods to wrap the liquid injection needle and stop the liquid injection. The weighing component includes a hydraulic cylinder arranged on the frame and a weighing platform driven by the hydraulic cylinder. During the process of the weighing platform rising with the hydraulic cylinder, the bearing plate is separated, so that the battery falls onto the weighing platform for weighing.

[0007] As a preference, the liquid injection component further includes a support plate arranged on the frame. A plurality of adjusting rods are slidably arranged on the support plate, and an adjusting plate is arranged on the adjusting rods. The adjusting plate is provided with a fixing rod and a fixing plate arranged on the fixing rod. A first motor is arranged on the support plate, and a threaded rod a driven by the first motor is arranged. The support plate and the fixing plate are meshed and arranged on the threaded rod a. A second motor is arranged on the fixing plate, and a threaded rod b driven by the second motor is arranged. A liquid injection plate meshed with the threaded rod b is slidably arranged on the fixing rod. The liquid injection needle is arranged on the liquid injection plate.

[0008] As a preference, a plurality of sliding grooves are opened on the bearing platform, and limiting grooves are further opened on the surfaces of the sliding grooves. Limiting blocks are opened on the bearing plate. While the bearing plate slides on the sliding grooves, it is limited by the limiting blocks. Threaded rods are rotatably arranged on both sides of the sliding grooves. Slide rods are arranged on both sides of the bearing plate, and the slide rods are meshed and arranged on the threaded rods. Gear teeth are arranged on the threaded rods. A rack meshed with the gear teeth is slidably arranged on the bearing platform, and one end of the rack is arranged on the weighing platform.

[0009] As a preference, a covering opening is opened on the liquid stop block, an inclined block is arranged on the side surface of the liquid stop block, the end surface of the thrust rod is arranged as an inclined surface, a sliding block is arranged on the side surface of the plug, a round rod is arranged in the plug, the sliding block is slidably arranged on the round rod, a spring sleeved on the round rod is arranged between the two sliding blocks on both sides, and a clamping block is further arranged on the side surface of the thrust rod.

[0010] As a preference, the weighing component includes a base arranged on the frame and an electronic scale arranged on the base. The output shaft of the hydraulic cylinder is connected to the base. A support guide rod is arranged on the electronic scale, and the weighing platform is arranged on the support guide rod. Protective covers are arranged on the bottom surface and the side surface of the base, and a diversion block is further arranged on one side of the base.

[0011] As an optimization, an operation panel and warning lights are arranged on the frame, and a liquid storage tank and a liquid injection pump are also arranged inside the frame.

[0012] As an optimization, a blanking groove for the battery to fall is opened below the liquid injection needle on the bearing platform, and the length and width of the blanking groove are greater than those of the battery.

[0013] As an optimization, a plurality of thread segments a and thread segments b are arranged on the threaded rod, the thread segments a and b have opposite helix directions, and the bearing plates engaged on the thread segments a and b are arranged facing each other.

[0014] As an optimization, a water-absorbing sponge is arranged on the surface of the covering opening, and the diameter of the covering opening is set to be the same as the outer diameter of the liquid injection needle.

[0015] As an optimization, the distance between the two sides after the bearing plates are closed driven by the threaded rod is equal to the width of the battery.

[0016] Advantages of the present invention:

[0017] 1. While the hydraulic cylinder drives the weighing platform to descend and reset, it drives the rack to descend, thereby driving the threaded rod to rotate through the rack. The rotation of the threaded rod drives the two side bearing plates 7 to close, making the distance between the two sides of the bearing plates 7 equal to the distance between the batteries, so that the bearing plates 7 can be used to carry the batteries while limiting the left and right sides of the batteries, preventing the batteries from shaking during the liquid injection process and improving the liquid injection stability.

[0018] 2. During the process of the liquid injection needle injecting liquid into the battery, the liquid level of the electrolyte gradually rises. However, when the electrolyte touches the float, it drives the float to rise, and the float drives the ejector rod to rise. The ejector rod drives the two side liquid stop blocks to move towards the middle through the inclined plane, thereby covering the liquid injection needle, and the liquid injection needle stops injecting liquid through the sensor on the liquid stop block, avoiding excessive liquid injection and causing the electrolyte to overflow in subsequent processes.

[0019] In summary, the device has the advantages of high liquid injection stability and preventing electrolyte overflow, and is especially suitable for the technical field of lithium battery production. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2Partial front view of the present invention;

[0023] Figure 3 Partial view of the present invention;

[0024] Figure 4 Schematic structural diagram of the present invention;

[0025] Figure 5 Schematic structural diagram of the weighing component in the present invention;

[0026] Figure 6 Schematic structural diagram of the liquid injection component in the present invention;

[0027] Figure 7 Partial schematic structural diagram of the present invention;

[0028] Figure 8 Cross-sectional view of the liquid stopping component in the present invention;

[0029] Figure 9 Schematic structural diagram of the ejector rod in the present invention;

[0030] Figure 10 Schematic structural diagram of the liquid stopping block in the present invention;

[0031] Figure 11 Schematic structural diagram of the threaded rod in the present invention;

[0032] Figure 12 Working state diagram of the present invention.

[0033] Reference numerals in the drawings: 1. Frame; 2. Liquid injection component; 3. Liquid stopping component; 4. Carrying component; 5. Weighing component; 6. Carrying table; 7. Carrying plate; 8. Liquid injection needle; 9. Plug; 10. Liquid stopping block; 11. Ejector rod; 12. Floating buoy; 13. Hydraulic cylinder; 14. Weighing table; 21. Support plate; 22. Adjusting rod; 23. Adjusting plate; 24. Fixed rod; 25. Fixed plate; 26. First motor; 27. Threaded rod a; 28. Second motor; 29. Threaded rod b; 30. Liquid injection plate; 31. Chute; 32. Limiting groove; 33. Limiting block; 34. Threaded rod; 35. Slide bar; 36. Gear teeth; 37. Rack; 41. Wrapping opening; 42. Inclined block; 43. Slide block; 44. Round rod; 45. Block; 51. Base; 52. Electronic rod; 53. Support guide rod; 54. Protective cover; 55. Diversion block; 61. Operation panel; 62. Warning lamp; 71. Feeding chute; 81. Threaded section a; 82. Threaded section b. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] Embodiment 1

[0036] As Figures 1 to 12 shown, an integrated device for weighing and injecting liquid of a lithium battery to prevent overflow includes a frame 1, a liquid injection assembly 2, a liquid stop assembly 3, a bearing assembly 4, and a weighing assembly 5. A bearing platform 6 is arranged on the frame 1. The bearing assembly 4 includes a bearing plate 7 slidably arranged on the bearing platform 6. The liquid injection assembly 2 includes a liquid injection needle 8 slidably arranged above the bearing platform 6. The liquid stop assembly 3 includes a plug 9 arranged at the battery liquid injection port and a liquid stop block 10 slidably arranged on the plug 9. Thrust rods 11 are slidably arranged on both sides of the liquid stop block 10, and a float 12 is arranged between the thrust rods 11. During the process of injecting liquid into the battery by the liquid injection needle 8, the float 12 is driven to rise, so that the liquid stop block 10 is driven to move by the thrust rods 11 to wrap the liquid injection needle 8 to stop the liquid injection. The weighing assembly 5 includes a hydraulic cylinder 13 arranged on the frame 1 and a weighing platform 14 driven by the hydraulic cylinder 13. During the process of the weighing platform 14 rising with the hydraulic cylinder 13, the bearing plate 7 is driven to separate, so that the battery falls onto the weighing platform 14 for weighing.

[0037] In addition, before injecting liquid into the battery, the worker installs the liquid stop assembly 3 on the battery liquid injection port. Then, after the hydraulic cylinder 13 drives the weighing platform 14 to reset, the bearing plate 7 closes. The worker places the battery on the bearing plate 7 for liquid injection.

[0038] As Figure 6 shown, the liquid injection assembly 2 further includes a support plate 21 arranged on the frame 1. A plurality of adjusting rods 22 are slidably arranged on the support plate 21, and an adjusting plate 23 is arranged on the adjusting rods 22. A fixing rod 24 is arranged on the adjusting plate 23, and a fixing plate 25 is arranged on the fixing rod 24. A first motor 26 is arranged on the support plate 21, and a threaded rod a 27 driven by the first motor 26 is arranged. The support plate 21 and the fixing plate 25 are meshed and arranged on the threaded rod a 27. A second motor 28 is arranged on the fixing plate 25, and a threaded rod b 29 driven by the second motor 28 is arranged. A liquid injection plate 30 meshed with the threaded rod b 29 is slidably arranged on the fixing rod 24. The liquid injection needle 8 is arranged on the liquid injection plate 30.

[0039] It is worth mentioning that after the battery is placed, the first motor 26 is started to drive the threaded rod a 27 to rotate. Under the limit of the adjusting rods 22, the fixing plate 25 and the adjusting plate 23 are driven to descend to drive the liquid injection plate 30 to approach the battery initially and make the adjusting plate 23 abut against the battery. Then, the second motor 28 rotates to drive the liquid injection plate 30 to descend through the threaded rod b 29, so that the liquid injection needle 8 is driven to descend through the liquid injection plate 30, and the liquid injection needle 8 extends into the battery for liquid injection. By first adjusting the fixing plate 25 to descend and approach the battery initially, the liquid injection assembly 2 can adapt to batteries of different heights.

[0040] As Figure 2 、 Figure 3, Figure 4 As shown, a plurality of sliding grooves 31 are formed on the carrying platform 6, a limiting groove 32 is further formed on the surface of the sliding groove 31, a limiting block 33 is formed on the carrying plate 7, and the carrying plate 7 is limited by the limiting block 33 while sliding on the sliding groove 31. Threaded rods 34 are rotatably arranged on both sides of the sliding groove 31, sliding rods 35 are arranged on both sides of the carrying plate 7, the sliding rods 35 are engaged with the threaded rods 34, gear teeth 36 are arranged on the threaded rods 34, and a rack 37 engaged with the gear teeth 36 is slidably arranged on the carrying platform 6. One end of the rack 37 is arranged on the weighing platform 14.

[0041] It should be noted here that when the weighing platform 14 rises with the hydraulic cylinder 13, the rack 37 is driven to rise. The rack 37 drives the threaded rod 34 to rotate, so that the carrying platform 6 is separated from and disengaged from the battery by the threaded rod 34, causing the battery to fall onto the weighing platform 14 for weighing. After the battery weighing is completed and the battery is taken out, when the hydraulic cylinder 13 drives the weighing platform 14 to descend and reset, the rack 37 descends to drive the threaded rod 34 to reverse, thereby driving the carrying platform 6 to close for subsequent battery carrying and liquid injection processes.

[0042] As Figure 10 shown, a covering port 41 is formed on the liquid stopping block 10, an inclined block 42 is arranged on the side surface of the liquid stopping block 10, the end surface of the ejector rod 11 is arranged as an inclined surface, a sliding block 43 is arranged on the side surface of the plug 9, a round rod 44 is arranged inside the plug 9, the sliding block 43 is slidably arranged on the round rod 44, a spring sleeved on the round rod 44 is arranged between the two sliding blocks 43, and a clamping block 45 is further arranged on the side surface of the ejector rod 11.

[0043] It should be noted that during the liquid injection process, the liquid level gradually rises. After contacting the float 12, the float 12 is driven to rise by buoyancy, and at the same time, the ejector rod 11 is driven to rise. The ejector rod 11 moves through the inclined surface and the inclined block 42 to drive the two liquid stopping blocks 10 to close. By arranging the clamping block 44 on the ejector rod 11, it is to prevent the ejector rod 11 from falling.

[0044] As Figure 5 shown, the weighing assembly 5 includes a base 51 arranged on the frame 1 and an electronic scale 52 arranged on the base 51. The output shaft of the hydraulic cylinder 13 is connected to the base 51. A support guide rod 53 is arranged on the electronic scale 52, the weighing platform 14 is arranged on the support guide rod 53, protective covers 54 are arranged on the bottom surface and the side surface of the base 51, and a diversion block 55 is further arranged on one side of the base 51.

[0045] It should be further noted that after the liquid injection needle 8 finishes stopping the liquid injection, there is still electrolyte remaining in the liquid injection needle 8. After the battery is taken out, the electrolyte in the liquid injection needle 8 is likely to drip. By providing a protective cover 54 on the electronic scale 52, it is possible to prevent the electrolyte from dripping onto the electronic scale 52 and causing a short circuit in the internal circuit, which affects the service life of the electronic scale 52. Moreover, by providing a diversion block 55 on the side, the electrolyte on the protective cover 54 can flow to the diversion block 55 and then from the diversion block 55 to the working area.

[0046] As Figure 1 shown, an operation panel 61 and a warning light 62 are provided on the frame 1, and a liquid storage tank and a liquid injection pump are also provided inside the frame 1.

[0047] It should be noted here that while the operation panel 61 performs process operations on the device, it can effectively monitor the operation of the device, and monitor the liquid injection situation through the warning light 62.

[0048] As Figure 7 shown, a blanking groove 71 for the battery to fall is provided below the liquid injection needle 8 on the carrier table 6, and the length and width of the blanking groove 71 are greater than the length and width of the battery.

[0049] It should be emphasized that by setting the length and width of the blanking groove 71 to be greater than the length and width of the battery, it is possible to prevent the blanking groove 71 from interfering with the battery and causing the battery to get stuck when it falls.

[0050] As Figure 11 shown, a plurality of thread segments a81 and thread segments b82 are provided on the threaded rod 34, the thread segments a81 and b82 have opposite helix directions, and the carrier plates 7 engaged on the thread segments a81 and b82 are arranged facing each other.

[0051] It is worth mentioning here that by setting the helix directions of the thread segments a81 and b82 to be opposite, it is possible to drive the carrier plates 7 on the thread segments a81 and b82 to move apart and close while the threaded rod 34 rotates.

[0052] The surface of the covering port 41 is provided with a water-absorbing sponge, and the diameter of the covering port 41 is set to be the same as the outer diameter of the liquid injection needle 8.

[0053] As Figure 2 shown, after the carrier plates 7 are closed under the drive of the threaded rod 34, the distance between the two sides is equal to the width of the battery.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0055] Certainly, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be understood as a limitation on the quantity.

[0056] As mentioned above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art under the technical disclosure of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An integrated device for liquid injection and weighing of a lithium battery to prevent overflow, comprising a frame (1), a liquid injection assembly (2), a liquid stop assembly (3), a bearing assembly (4), and a weighing assembly (5), characterized in that, A carrier platform (6) is arranged on the frame (1). The carrier assembly (4) includes a carrier plate (7) slidably arranged on the carrier platform (6). The liquid injection assembly (2) includes a liquid injection needle (8) slidably arranged above the carrier platform (6). The liquid stop assembly (3) includes a plug (9) arranged at the battery liquid injection port and a liquid stop block (10) slidably arranged on the plug (9). Thrust rods (11) are slidably arranged on both sides of the liquid stop block (10), and a float (12) is arranged between the thrust rods (11). During the process of injecting liquid into the battery by the liquid injection needle (8), the float (12) is driven to rise, so that the liquid stop block (10) is driven to move by the thrust rods (11) to wrap the liquid injection needle (8) to stop the liquid injection. The weighing assembly (5) includes a hydraulic cylinder (13) arranged on the frame (1) and a weighing platform (14) driven by the hydraulic cylinder (13). During the process of the weighing platform (14) rising with the hydraulic cylinder (13), the carrier plate (7) is driven to separate, so that the battery falls onto the weighing platform (14) for weighing.

2. The integrated device for weighing and liquid injection of a spill-proof lithium battery according to claim 1, characterized in that, The liquid injection assembly (2) further includes a support plate (21) arranged on the frame (1). A plurality of adjusting rods (22) are slidably arranged on the support plate (21), and an adjusting plate (23) is arranged on the adjusting rods (22). A fixing rod (24) is arranged on the adjusting plate (23), and a fixing plate (25) is arranged on the fixing rod (24). A first motor (26) and a threaded rod a (27) driven by the first motor (26) are arranged on the support plate (21). The support plate (21) and the fixing plate (25) are meshed on the threaded rod a (27). A second motor (28) and a threaded rod b (29) driven by the second motor (28) are arranged on the fixing plate (25). A liquid injection plate (30) meshed with the threaded rod b (29) is slidably arranged on the fixing rod (24). The liquid injection needle (8) is arranged on the liquid injection plate (30).

3. The integrated device for weighing and injecting liquid of a spill-proof lithium battery according to claim 1, wherein A plurality of chutes (31) are formed on the carrier platform (6), and limiting grooves (32) are further formed on the surfaces of the chutes (31). Limiting blocks (33) are formed on the carrier plate (7). When the carrier plate (7) slides on the chutes (31), it is limited by the limiting blocks (33). Threaded rods (34) are rotatably arranged on both sides of the chutes (31). Slide rods (35) are arranged on both sides of the carrier plate (7), and the slide rods (35) are meshed on the threaded rods (34). Gear teeth (36) are arranged on the threaded rods (34). A rack (37) meshed with the gear teeth (36) is slidably arranged on the carrier platform (6), and one end of the rack (37) is arranged on the weighing platform (14).

4. The integrated device for weighing and liquid injection of a spill-proof lithium battery according to claim 1, characterized in that, The liquid stop block (10) is provided with a covering opening (41), a bevel block (42) is arranged on the side surface of the liquid stop block (10), the end surface of the ejector rod (11) is arranged as an inclined surface, a slider (43) is arranged on the side surface of the plug (9), a round rod (44) is arranged in the plug (9), the slider (43) is slidably arranged on the round rod (44), a spring sleeved on the round rod (44) is arranged between the two sliders (43), and a clamping block (45) is further arranged on the side surface of the ejector rod (11).

5. The integrated device for weighing and injecting liquid of a lithium battery with anti-overflow function according to claim 1, characterized in that, The weighing assembly (5) includes a base (51) arranged on the frame (1) and an electronic scale (52) arranged on the base (51). The output shaft of the hydraulic cylinder (13) is connected to the base (51). A support guide rod (53) is arranged on the electronic scale (52), the weighing table (14) is arranged on the support guide rod (53), protective covers (54) are arranged on the bottom surface and the side surface of the base (51), and a diversion block (55) is further arranged on one side of the base (51).

6. The integrated device for weighing and injecting liquid of a lithium battery with anti-overflow function according to claim 1, wherein, An operation panel (61) and a warning lamp (62) are arranged on the frame (1), and a liquid storage tank and a liquid injection pump are further arranged in the frame (1).

7. An integrated device for weighing and injecting liquid into a lithium battery to prevent overflow according to claim 3, characterized in that, The loading platform (6) is provided with a blanking groove (71) for the battery to fall below the liquid injection needle (8), and the length and width of the blanking groove (71) are larger than those of the battery.

8. The integrated device for weighing and injecting liquid of a spill-proof lithium battery according to claim 3, characterized in that, A plurality of thread segments a (81) and thread segments b (82) are arranged on the threaded rod (34). The thread segments a (81) and the thread segments b (82) have opposite helix directions, and a bearing plate (7) is engaged with the thread segments a (81) and the thread segments b (82).

9. The integrated device for weighing and injecting liquid of a spill - proof lithium battery according to claim 4, wherein, The surface of the covering opening (41) is provided with a water-absorbing sponge, and the diameter of the covering opening (41) is set to be the same as the outer diameter of the liquid injection needle (8).

10. The integrated device for weighing and liquid injection of a spill-proof lithium battery according to claim 3, wherein, The distance between the two sides of the bearing plate (7) after being closed under the drive of the threaded rod (34) is equal to the width of the battery.

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