A kind of automotive lithium-ion battery with anti-collision protection effect

Abstract

The present invention discloses an automotive lithium-ion battery with anti-collision protection effect, which relates to the field of automotive lithium-ion battery structure, including an outer cylinder, the outer cylinder is tubular and has a lower cover installed at its bottom end, and an upper cover installed at its top end, and a cylindrical battery pack assembly is arranged inside the outer cylinder, and a plurality of tension springs are evenly installed on the top end, bottom end and outer peripheral side wall of the cylindrical battery pack assembly, and one end of the plurality of tension springs is installed on the bottom side of the corresponding upper cover, the top side of the lower cover and the inner side wall of the outer cylinder through an adjustment unit. In the present invention, the lithium battery body is fixed in a relatively suspended state inside the outer cylinder by a plurality of tension springs, and when the outer cylinder is hit, the elasticity of the tension spring will play a certain buffering role, which can reduce the impact force of foreign objects on the lithium battery body, and when the lithium battery body in a relatively suspended state is hit at any angle, the lithium battery body can be buffered by the tension spring to reduce the impact.

Description

Technical Field

[0001] The present invention relates to the field of automotive lithium-ion battery structures, and in particular to an automotive lithium-ion battery with anti-collision protection effect. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as a power source (or use conventional automotive fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. We are currently vigorously developing electric vehicles. Lithium-ion batteries are often used as power batteries for new energy vehicles due to their high voltage, high specific energy, and long cycle life. However, the current manufacturing process of lithium-ion batteries makes lithium ions extremely susceptible to external impacts. When an impact occurs, causing an internal short circuit or external puncture damage, they will release more energy in a short period of time, and even cause an explosion, which seriously threatens the safety of new energy vehicles.

[0003] In the prior art, in order to reduce the impact of lithium-ion batteries on impact, the battery frame is usually reinforced to reduce deformation caused by impact, thereby reducing the squeezing of the battery. However, the volume of automobile batteries is relatively large, and the direction of impact is random, so it is difficult to reinforce all the outer surfaces of the battery frame. Otherwise, the weight of the battery frame is easily greatly increased, which increases the driving burden. Therefore, we disclose an automobile lithium-ion battery with anti-collision protection effect to meet people's needs. Summary of the invention

[0004] The purpose of the present application is to provide an automotive lithium-ion battery with anti-collision protection effect, so as to solve the problem proposed in the above background technology that in order to reduce the impact of lithium-ion batteries on the lithium-ion batteries, the battery frame is usually reinforced to reduce the deformation caused by the impact, thereby reducing the squeezing of the battery. However, the volume of automotive batteries is relatively large, and the direction of the impact is random, so it is difficult to reinforce all the outer surfaces of the battery frame, otherwise it is easy to greatly increase the mass of the battery frame and increase the driving burden.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an automotive lithium-ion battery with anti-collision protection effect, comprising an outer cylinder, the outer cylinder is tubular and has a lower cover installed at its bottom end, and an upper cover installed at its top end, a cylindrical battery pack assembly is arranged inside the outer cylinder, and a plurality of tension springs are evenly installed at the top end, bottom end and outer peripheral side wall of the cylindrical battery pack assembly, one end of each of the plurality of tension springs is installed on the corresponding bottom side of the upper cover, the top side of the lower cover and the inner side wall of the outer cylinder through an adjustment unit, and the cylindrical battery pack assembly is arranged inside the outer cylinder. The cylindrical battery pack assembly is in a suspended state, the lower cover is provided with a plurality of mounting holes and is provided with a plurality of one-way valve units, and a fixing unit is provided on the outer side of the outer cylinder; the cylindrical battery pack assembly consists of an inner cylinder and a lithium battery body, the lithium battery body is installed in the inner cylinder, a closing plate is installed on the top side of the inner cylinder, the closing plate is fixed to the inner cylinder by a plurality of first bolts, and the lithium battery body is in a fixed state, and one end of the plurality of tension springs is installed on the outer side wall corresponding to the inner cylinder and the top side of the closing plate.

[0006] Based on the above structure, the lithium battery body is fixed by the setting of the inner cylinder, and is closed by the closing plate to form an integral structure, the lithium battery body is wrapped to form an inner layer of protection, and the lithium battery body is connected to form a relatively suspended state inside the outer cylinder. When the outer cylinder is hit, the elasticity of the tension spring will play a certain buffering role, reducing the direct impact of the outer cylinder on the lithium battery body. Even if the external object pierces the outer cylinder and reaches the inside of the outer cylinder, due to a certain gap between the lithium battery body and the outer cylinder, under the buffering effect of the tension spring, the impact force of the external object on the lithium battery body can be reduced, and the lithium battery body in a relatively suspended state can be buffered by the tension spring when it is hit at any angle, reducing the impact. Through the setting of multiple one-way valve units, in case the lithium battery body is severely damaged and catches fire, when the air pressure inside the outer cylinder increases, the one-way valve unit can be automatically pushed open for automatic pressure relief to prevent explosion and further increase safety.

[0007] Preferably, a buffer pad is installed on the inner wall of the inner cylinder and the bottom side of the closing plate, and one side of the buffer pad matches the outer wall of the lithium battery body.

[0008] Furthermore, by providing the buffer pad, the lithium battery body can be further buffered to reduce the impact force.

[0009] Preferably, flanges are installed on the inner cylinder near the top and bottom ends, a plurality of reinforcing ribs are evenly installed on the outer wall of the inner cylinder, a plurality of screw holes corresponding to the reinforcing ribs are evenly opened on the top side of the inner cylinder, and one end of the first bolt is threadedly matched with the corresponding screw hole.

[0010] Furthermore, by providing flanges and reinforcing ribs, the overall rigidity of the inner cylinder can be increased, preventing the inner cylinder from deforming and squeezing the lithium battery body, thereby further improving anti-collision safety.

[0011] Preferably, the adjustment unit includes a threaded column, and one side of the upper cover, the lower cover and the outer cylinder are provided with mounting holes and fixed blocks, one side of multiple fixing blocks are provided with threaded holes, the threaded column is screwed and installed in the corresponding threaded holes, one end of the threaded column is rotatably installed with a hook, one end of multiple tension springs is provided with a ring, the hook is hung and matched with the corresponding ring, and an identification unit is installed on one side of the threaded column.

[0012] Furthermore, by setting the threaded column, rotating the threaded column can make one end of the threaded column screw in or out, thereby adjusting the tension of the tension spring by the threaded column and adjusting the elasticity of the tension spring.

[0013] Preferably, the identification unit includes an L-shaped sliding rod, and one side of each of the plurality of fixed blocks is provided with a sliding hole, the L-shaped sliding rod is slidably installed in the corresponding sliding hole, one side of the L-shaped sliding rod is engraved with a scale mark, one end of the threaded column matches one side of the L-shaped sliding rod, and the scale mark matches the corresponding side of the fixed block.

[0014] Furthermore, by setting the L-shaped slide rod, when the threaded column is rotated, one side of the L-shaped slide rod is close to one end of the threaded column, and the extended length of the threaded column can be quickly judged by observing the scale mark, thereby determining the adjustment amount of the threaded column.

[0015] Preferably, the one-way valve unit includes a square shell, a groove is provided on one side of the square shell, a vent hole is provided on the bottom side wall of the groove, the square shell is installed on the lower cover, and the vent hole is connected to the interior of the outer cylinder, a rotating plate is rotatably installed on the groove wall of the groove via a rotating shaft, one side of the rotating plate matches the vent hole, and a pushing unit is installed on the other side.

[0016] Furthermore, through the setting of the square shell, the pushing unit pushes the rotating plate to rotate along the rotating axis, and blocks the vent on one side of the rotating plate to prevent water vapor or foreign matter from entering the interior of the outer cylinder. When the air pressure inside the outer cylinder increases, the air pressure pushes the rotating plate to rotate, so that the vent opens to release the pressure, thereby realizing the one-way opening function.

[0017] Preferably, the pushing unit comprises an elastic sheet, one end of which is mounted on a groove wall of the groove, and the other end of which matches with one side of the rotating plate.

[0018] Furthermore, by providing the elastic sheet, the elastic force pushes the rotating plate to rotate toward one side of the vent hole, and when subjected to a reverse pressure force, the elastic sheet deforms to open the vent hole.

[0019] Preferably, the fixing unit includes a plurality of positioning columns, and flange edges are installed on the outer walls of the outer cylinder close to the top side and the bottom side. The bottom ends of the plurality of positioning columns are installed on the flange edge located on the top side of the outer cylinder, and a plurality of fixing holes are evenly opened on the flange edge located at the bottom end of the outer cylinder.

[0020] Furthermore, by setting the positioning column, the outer cylinder is pushed upward along the bottom of the vehicle and positioned through the positioning column, and then the outer cylinder is fixed through the fixing hole using a fastener to achieve the installation of the outer cylinder.

[0021] Preferably, a plurality of reinforcing ribs are installed on the inner wall of the outer cylinder, screw holes are provided at both ends of the reinforcing ribs, the bottom side of the upper cover matches the top end of the reinforcing ribs, the top side of the lower cover matches the bottom end of the reinforcing ribs, and mounting holes are provided on one side of the upper cover and the lower cover respectively, a second bolt passes through the mounting hole, and one end of the second bolt is threadedly matched with the corresponding screw hole.

[0022] Furthermore, by providing reinforcing ribs and mounting holes, both the upper cover and the lower cover can be disassembled, thereby facilitating the installation of the inner cylinder. By using a hook to connect and install the upper cover or the lower cover, adjusting the corresponding tension spring to a relaxed state, and then installing the lower cover or the upper cover, the operation is facilitated.

[0023] Preferably, the inner side wall of the outer cylinder, the bottom side of the upper cover and the top side of the lower cover are all provided with a flame retardant layer.

[0024] Furthermore, by providing the flame retardant layer, when the lithium battery body is damaged and burns, the flame retardant layer can prevent the burning from spreading to the outside of the outer cylinder and causing a greater impact.

[0025] In summary, the technical effects and advantages of the present invention are as follows:

[0026] 1. In the present invention, the lithium battery body is fixed in a relatively suspended state inside the outer cylinder by multiple tension springs. When the outer cylinder is hit, the elasticity of the tension spring will play a certain buffering role, reducing the direct impact of the outer cylinder on the lithium battery body. Even if an external object pierces the outer cylinder and reaches the inside of the outer cylinder, due to a certain gap between the lithium battery body and the outer cylinder, the impact force of the external object on the lithium battery body can be reduced under the buffering effect of the tension spring. Moreover, when the lithium battery body in a relatively suspended state is hit at any angle, the lithium battery body can be buffered by the tension spring to reduce the impact.

[0027] 2. In the present invention, by setting the buffer pad, the lithium battery body can be further buffered to reduce the impact force. By setting the flange and reinforcing ribs, the overall stiffness of the inner cylinder can be increased to prevent the deformation of the inner cylinder from squeezing the lithium battery body, thereby further improving the anti-collision safety. By setting the threaded column, the threaded column can be rotated to make one end of the threaded column screw in or out, thereby adjusting the tension of the tension spring by the threaded column and adjusting the elasticity of the tension spring.

[0028] 3. In the present invention, by setting a plurality of one-way valve units, in case the lithium battery body is severely damaged and catches fire, when the air pressure inside the outer cylinder increases, the one-way valve unit can be automatically pushed open to release the pressure automatically, thereby preventing the explosion from occurring and further increasing safety. By setting a flame retardant layer, when the lithium battery body is damaged and burns, the flame retardant layer can prevent the burning from spreading to the outside of the outer cylinder and causing a greater impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention without the outer cylinder;

[0032] Figure 3 is a cross-sectional view of the present invention;

[0033] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure of the middle A area;

[0034] Figure 5 It is a schematic diagram of the partial cross-section structure of the thread column area in the present invention;

[0035] Figure 6 It is a schematic diagram of the partial cross-section structure of the rotating plate area in the present invention.

[0036] In the figure: 1. outer cylinder; 2. flange edge; 3. fixing hole; 4. positioning column; 5. upper cover; 6. threaded column; 7. second bolt; 8. fixing block; 9. closing plate; 10. first bolt; 11. tension spring; 12. inner cylinder; 13. reinforcing rib; 14. reinforcing rib; 15. lithium battery body; 17. buffer pad; 18. lower cover; 19. flame retardant layer; 20. rotating plate; 21. hook; 22. L-shaped slide bar; 23. scale mark; 24. square shell; 25. vent hole; 26. rotating shaft; 27. elastic sheet. DETAILED DESCRIPTION

[0037] 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 described embodiments 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.

[0038] Example: Reference Figure 1-6 The lithium-ion battery for automobiles with anti-collision protection effect shown in the figure comprises an outer cylinder 1, which is tubular and has a lower cover 18 installed at its bottom end, and an upper cover 5 installed at its top end. A cylindrical battery pack assembly is arranged inside the outer cylinder 1, and a plurality of tension springs 11 are evenly installed at the top end, bottom end and outer peripheral side wall of the cylindrical battery pack assembly, and one end of each of the plurality of tension springs 11 is installed on the bottom side of the corresponding upper cover 5, the top side of the lower cover 18 and the inner side wall of the outer cylinder 1 through an adjustment unit, so that the cylindrical battery pack assembly is suspended in the air A plurality of mounting holes are provided on the lower cover 18 and a plurality of one-way valve units are installed thereon, and a fixing unit is provided on the outer side of the outer cylinder 1; the cylindrical battery pack assembly is composed of an inner cylinder 12 and a lithium battery body 15, and the lithium battery body 15 is installed in the inner cylinder 12, and a closing plate 9 is installed on the top side of the inner cylinder 12, and the closing plate 9 is fixed to the inner cylinder 12 by a plurality of first bolts 10, and the lithium battery body 15 is in a fixed state, and one end of a plurality of tension springs 11 is installed on the outer side wall of the corresponding inner cylinder 12 and the top side of the closing plate 9.

[0039] Based on the above structure, the lithium battery body 15 is fixed by the setting of the inner cylinder 12, and is closed by the closing plate 9 to form an integral structure, and the lithium battery body 15 is wrapped to form an inner layer protection. Under the connection of multiple tension springs 11, the lithium battery body 15 is relatively suspended inside the outer cylinder 1. When the outer cylinder 1 is hit, the elasticity of the tension spring 11 will play a certain buffering role, reducing the direct impact of the outer cylinder 1 on the lithium battery body 15. Even if an external object pierces the outer cylinder 1 and reaches the inside of the outer cylinder 1, due to the lithium battery There is a certain gap between the main body 15 and the outer cylinder 1. Under the buffering effect of the tension spring 11, the impact force of foreign objects on the lithium battery main body 15 can be reduced. When the lithium battery main body 15 in a relatively suspended state is hit at any angle, the lithium battery main body 15 can be buffered by the tension spring 11 to reduce the impact. Through the arrangement of multiple one-way valve units, in case the lithium battery main body 15 is severely damaged and catches fire, when the internal air pressure of the outer cylinder 1 increases, the one-way valve unit can be automatically pushed open for automatic pressure relief to prevent the occurrence of explosion, thereby further increasing safety.

[0040] like Figure 3 As shown, a buffer pad 17 is installed on the inner wall of the inner cylinder 12 and the bottom side of the closing plate 9. One side of the buffer pad 17 matches the outer wall of the lithium battery body 15. Through the setting of the buffer pad 17, the lithium battery body 15 can be further buffered to reduce the impact force.

[0041] like Figure 2 , 3 As shown in Figure 4, flanges are installed near the top and bottom ends of the inner cylinder 12, a plurality of reinforcing ribs 13 are evenly installed on the outer wall of the inner cylinder 12, a plurality of screw holes corresponding to the reinforcing ribs 13 are evenly opened on the top side of the inner cylinder 12, and one end of the first bolt 10 is screwed and matched with the corresponding screw hole. By setting the flanges and reinforcing ribs 13, the overall rigidity of the inner cylinder 12 can be increased, and the deformation of the inner cylinder 12 can be prevented from squeezing the lithium battery body 15, thereby further improving the anti-collision safety.

[0042] like Figure 5 As shown, the adjustment unit includes a threaded column 6, and mounting holes are provided on one side of the upper cover 5, the lower cover 18 and the outer cylinder 1, and a fixing block 8 is installed thereon. A plurality of fixing blocks 8 are provided with threaded holes on one side, and the threaded column 6 is screwed and installed in the corresponding threaded hole. A hook 21 is rotatably installed on one end of the threaded column 6, and a plurality of tension springs 11 are provided with a ring at one end, and the hook 21 is hooked and matched with the corresponding ring. An identification unit is installed on one side of the threaded column 6. Through the setting of the threaded column 6, rotating the threaded column 6 can make one end of the threaded column 6 screw in or out, so that the tension of the tension spring 11 by the threaded column 6 can be adjusted, and the elasticity of the tension spring 11 can be adjusted.

[0043] like Figure 5As shown, the identification unit includes an L-shaped slide bar 22, and one side of each of the plurality of fixed blocks 8 is provided with a slide hole. The L-shaped slide bar 22 is slidably installed in the corresponding slide hole. One side of the L-shaped slide bar 22 is engraved with a scale mark 23. One end of the threaded column 6 matches with one side of the L-shaped slide bar 22, and the scale mark 23 matches with one side of the corresponding fixed block 8. Through the setting of the L-shaped slide bar 22, when the threaded column 6 is rotated, one side of the L-shaped slide bar 22 is made to be close to one end of the threaded column 6. By observing the scale mark 23, the extended length of the threaded column 6 can be quickly judged, thereby determining the adjustment amount of the threaded column 6.

[0044] like Figure 3 and 6 As shown, the one-way valve unit includes a square shell 24, a groove is provided on one side of the square shell 24, a vent hole 25 is provided on the bottom side wall of the groove, the square shell 24 is mounted on the lower cover 18, and the vent hole 25 is connected to the inside of the outer cylinder 1, a rotating plate 20 is rotatably mounted on the groove wall of the groove through a rotating shaft 26, one side of the rotating plate 20 matches the vent hole 25, and a pushing unit is installed on the other side. Through the setting of the square shell 24, the pushing unit pushes the rotating plate 20 to rotate along the rotating shaft 26, and blocks the vent hole 25 on one side of the rotating plate 20 to prevent water vapor or foreign matter from entering the inside of the outer cylinder 1. When the internal air pressure of the outer cylinder 1 increases, the air pressure pushes the rotating plate 20 to rotate, so that the vent hole 25 opens to release the pressure, thereby realizing the one-way opening function.

[0045] like Figure 6 As shown, the pushing unit includes an elastic sheet 27, one end of which is installed on the groove wall of the groove, and the other end matches one side of the rotating plate 20. Through the setting of the elastic sheet 27, the elastic force pushes the rotating plate 20 to rotate toward one side of the vent 25. When subjected to a reverse pressure force, the elastic sheet 27 is deformed to open the vent 25.

[0046] like Figure 1 As shown, the fixing unit includes a plurality of positioning columns 4, and flange edges 2 are installed on the outer side walls of the outer cylinder 1 near the top side and the bottom side. The bottom ends of the plurality of positioning columns 4 are installed on the flange edge 2 located on the top side of the outer cylinder 1, and a plurality of fixing holes 3 are evenly opened on the flange edge 2 located at the bottom end of the outer cylinder 1. Through the arrangement of the positioning columns 4, the outer cylinder 1 is pushed upward along the bottom of the vehicle and positioned through the positioning columns 4, and then the outer cylinder 1 is fixed through the fixing holes 2 using fasteners to achieve the installation of the outer cylinder 1.

[0047] like Figure 3 and 5As shown, a plurality of reinforcing ribs 14 are installed on the inner wall of the outer cylinder 1, and screw holes are provided at both ends of the reinforcing ribs 14. The bottom side of the upper cover 5 matches the top end of the reinforcing rib 14, and the top side of the lower cover 18 matches the bottom end of the reinforcing rib 14. One side of the upper cover 5 and the lower cover 18 are correspondingly provided with mounting holes, and the second bolts 7 pass through the mounting holes, and one end of the second bolts 7 is screwed and matched with the corresponding screw holes. Through the arrangement of the reinforcing ribs 14 and the mounting holes, the upper cover 5 and the lower cover 18 can be disassembled, thereby facilitating the installation of the inner cylinder 12. The upper cover 5 or the lower cover 18 is connected and installed by using the hook 21, the corresponding tension spring 11 is adjusted to a relaxed state, and then the lower cover 18 or the upper cover 5 is installed, which is easy to operate.

[0048] like Figure 3 As shown, the inner wall of the outer cylinder 1, the bottom side of the upper cover 5 and the top side of the lower cover 18 are all installed with a flame retardant layer 19. Through the setting of the flame retardant layer 19, when the lithium battery body 15 is damaged and burns, the flame retardant layer 19 can prevent the burning and prevent it from spreading to the outside of the outer cylinder 1 and causing a greater impact.

[0049] Working principle of the present invention:

[0050] The inner cylinder 12 is provided to fix the lithium battery body 15, and the closing plate 9 is used to close the lithium battery body 15 to form an integral structure. The lithium battery body 15 is wrapped to form an inner layer of protection. With the connection of multiple tension springs 11, the lithium battery body 15 is relatively suspended inside the outer cylinder 1. When the outer cylinder 1 is hit, the elasticity of the tension spring 11 will play a certain buffering role, reducing the direct impact of the outer cylinder 1 on the lithium battery body 15. Even if an external object pierces the outer cylinder 1 and reaches the inside of the outer cylinder 1, the lithium battery body 1 5 and the outer cylinder 1, under the buffering effect of the tension spring 11, the impact force of foreign objects on the lithium battery body 15 can be reduced, and when the lithium battery body 15 in a relatively suspended state is hit at any angle, the lithium battery body 15 can be buffered by the tension spring 11 to reduce the impact. Through the arrangement of multiple one-way valve units, in case the lithium battery body 15 is severely damaged and catches fire, when the internal air pressure of the outer cylinder 1 increases, the one-way valve unit can be automatically pushed open to automatically release the pressure, thereby preventing the occurrence of explosion and further increasing safety.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 lithium-ion battery for automobiles having an anti-collision protection effect, comprising an outer cylinder (1), Features: The outer cylinder (1) is tubular and has a lower cover (18) installed at its bottom end and an upper cover (5) installed at its top end. A cylindrical battery pack assembly is provided inside the outer cylinder (1). A plurality of tension springs (11) are evenly installed at the top end, bottom end and outer peripheral side wall of the cylindrical battery pack assembly. One end of each of the plurality of tension springs (11) is installed on the bottom side of the corresponding upper cover (5), the top side of the lower cover (18) and the inner side wall of the outer cylinder (1) through an adjustment unit, so that the cylindrical battery pack assembly is suspended. A plurality of mounting holes are opened on the lower cover (18) and a plurality of one-way valve units are installed thereon. A fixing unit is provided on the outer side of the outer cylinder (1); The cylindrical battery pack assembly is composed of an inner cylinder (12) and a lithium battery body (15), wherein the lithium battery body (15) is installed in the inner cylinder (12), a closing plate (9) is installed on the top side of the inner cylinder (12), the closing plate (9) is fixed to the inner cylinder (12) by a plurality of first bolts (10), and the lithium battery body (15) is fixed, and one end of a plurality of tension springs (11) is installed on the outer side wall corresponding to the inner cylinder (12) and the top side of the closing plate (9); The adjustment unit comprises a threaded column (6), the upper cover (5), the lower cover (18) and one side of the outer cylinder (1) are provided with mounting holes and fixed blocks (8) are installed thereon, a plurality of the fixed blocks (8) are provided with threaded holes on one side, the threaded column (6) is threadedly installed in the corresponding threaded holes, a hook (21) is rotatably installed at one end of the threaded column (6), a plurality of the tension springs (11) are provided with rings at one end, the hooks (21) are connected and matched with the corresponding rings, and an identification unit is installed on one side of the threaded column (6); The identification unit comprises an L-shaped sliding rod (22), one side of each of the plurality of fixed blocks (8) is provided with a sliding hole, the L-shaped sliding rod (22) is slidably mounted in the corresponding sliding hole, one side of the L-shaped sliding rod (22) is engraved with a scale mark (23), one end of the threaded column (6) matches one side of the L-shaped sliding rod (22), and the scale mark (23) matches one side of the corresponding fixed block (8).

2. A lithium-ion battery for automobiles having an anti-collision protection effect according to claim 1, Features: A buffer pad (17) is installed on the inner side wall of the inner cylinder (12) and on the bottom side of the closing plate (9), and one side of the buffer pad (17) matches the outer side wall of the lithium battery body (15).

3. The automotive lithium-ion battery with anti-collision protection effect according to claim 1, Features: The inner cylinder (12) is provided with flanges near the top and bottom ends, a plurality of reinforcing ribs (13) are evenly installed on the outer wall of the inner cylinder (12), a plurality of screw holes corresponding to the reinforcing ribs (13) are evenly opened on the top side of the inner cylinder (12), and one end of the first bolt (10) is threadedly connected to the corresponding screw hole.

4. The automotive lithium-ion battery with anti-collision protection effect according to claim 1, Features: The one-way valve unit comprises a square shell (24), one side of the square shell (24) is provided with a groove, a bottom side wall of the groove is provided with a vent hole (25), the square shell (24) is mounted on the lower cover (18), and the vent hole (25) is connected to the interior of the outer cylinder (1), a rotating plate (20) is rotatably mounted on the groove wall of the groove via a rotating shaft (26), one side of the rotating plate (20) matches the vent hole (25), and the other side is provided with a pushing unit.

5. A lithium-ion battery for automobiles having an anti-collision protection effect according to claim 4, Features: The pushing unit comprises an elastic sheet (27), one end of the elastic sheet (27) being mounted on the groove wall of the groove, and the other end of the elastic sheet (27) being matched with one side of the rotating plate (20).

6. A lithium-ion battery for automobiles having an anti-collision protection effect according to claim 1, Features: The fixing unit comprises a plurality of positioning columns (4), and flange edges (2) are installed on the outer side walls of the outer cylinder (1) close to the top side and the bottom side. The bottom ends of the plurality of positioning columns (4) are installed on the flange edge (2) located on the top side of the outer cylinder (1), and a plurality of fixing holes (3) are evenly opened on the flange edge (2) located at the bottom end of the outer cylinder (1).

7. The automotive lithium-ion battery with anti-collision protection effect according to claim 1, Features: A plurality of reinforcing ribs (14) are mounted on the inner wall of the outer cylinder (1), screw holes are provided at both ends of the reinforcing ribs (14), the bottom side of the upper cover (5) matches the top end of the reinforcing ribs (14), the top side of the lower cover (18) matches the bottom end of the reinforcing ribs (14), and mounting holes are provided on one side of the upper cover (5) and the lower cover (18), a second bolt (7) passes through the mounting hole, and one end of the second bolt (7) is threadedly connected to the corresponding screw hole.

8. The automotive lithium-ion battery with anti-collision protection effect according to claim 1, Features: The inner side wall of the outer cylinder (1), the bottom side of the upper cover (5) and the top side of the lower cover (18) are all provided with a flame retardant layer (19).

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