Protective device of lithium battery

Abstract

The utility model discloses a lithium battery protection device, which comprises a box body and a box door, both sides of the back of the box door are movably connected with both sides of the top of the back of the box body through hinges, and both the top and the bottom of the surface of the box body are fixedly connected with fixed frames. Through the arrangement of the first springs, the force equalizing plates are briefly collided in the transportation process, so that the first springs are extruded and deformed, the first springs generate resilience force at the same time, force generated by collision is buffered and weakened, after collision is finished, the first springs recover to the original shape, and next collision is facilitated; the problems that vibration force can be generated when protection boxes are bumped and shaken or collide with one another in the transportation process, the protection boxes are lack of buffer structures, the vibration force can directly penetrate through the protection boxes to vibrate the lithium batteries, and if the vibration force is repeatedly generated in the transportation process, the interiors of the lithium batteries are affected, and the transportation efficiency is poor are solved. Therefore, the problem of short circuit or damage is solved, and the auxiliary buffering effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection, in particular to a lithium battery protection device. Background Art

[0002] Lithium battery is a primary battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. It is different from rechargeable lithium-ion battery and lithium-ion polymer battery. The inventor of lithium battery is Edison. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium battery has not been used for a long time. With the development of microelectronics technology in the late 20th century, the number of miniaturized devices has increased, which puts high demands on power sources. Lithium battery has entered the large-scale practical stage.

[0003] For example, the application number is CN201822242880.X. The utility model discloses a lithium battery protection box, including a box body, a box door is hinged on the top rear side of the box body, and a rubber pad is bonded to the top outer side of the box door, a first sponge pad is bonded to the bottom of the inner cavity of the box body, rectangular grooves are opened in the center of the left and right sides of the inner cavity of the box body along the front and rear directions, and a groove connected to the rectangular groove is opened in the center of the front side of the inner cavity of the box body along the left and right directions, and the inner cavity of the rectangular groove is interference-fitted with the outer ring of the bearing on the front and rear sides, and the inner ring of the bearing is interference-fitted with a lead screw, and the outer wall of the lead screw is screwed with rectangular blocks on the front and rear sides. The lithium battery protection box can realize the clamping and fixing of lithium batteries, is simple to operate, and can be effectively fixed according to the size of the lithium battery. When the box body is vibrated during transportation, the lithium battery will not collide with the inner cavity of the protection box, thereby not causing damage to the lithium battery, which is convenient for use.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that when the above equipment is used, although it can solve the problem that the lithium battery protection box plays a protective role for the lithium battery during transportation and use, and prevents the lithium battery from vibrating and reducing the service life after being impacted by the outside, the protective space inside the existing lithium battery protection box cannot be adjusted, and cannot be effectively fixed according to the different sizes of the lithium battery. When the protection box is vibrated during transportation, the lithium battery will collide with the inner cavity of the protection box, which may easily cause damage to the lithium battery and is not conducive to use. However, during use, the protection box will be bumped and shaken during transportation or the protection boxes will collide with each other, which will generate vibration force. The protection box lacks a buffer structure, and the vibration force will directly pass through the protection box to vibrate the lithium battery. If the vibration force is repeatedly generated during transportation, the internal part of the lithium battery will be affected, causing short circuit or damage. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a protective device for lithium batteries, which has the advantage of auxiliary buffering and solves the vibration force generated by the protective box being bumped and shaken or the protective boxes colliding with each other during transportation. However, the protective box lacks a buffer structure, and the vibration force will directly pass through the protective box to vibrate the lithium battery. If the vibration force is repeatedly generated during transportation, the internal part of the lithium battery will be affected, causing short circuit or damage.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a lithium battery, comprising a box body and a box door, the two sides of the back side of the box door are movably connected to the two sides of the top of the back side of the box body through hinges, the top and bottom of the box body surface are fixedly connected to a fixed frame, a main body plate is provided on the outside of the fixed frame, the surface of the main body plate is plugged into the inner wall of the fixed frame, a first spring is fixedly connected to the outside of the main body plate, a force equalizing plate is provided on the outside of the main body plate, a plurality of first springs are provided and are distributed equidistantly in a rectangular shape, the other end of the first spring is fixedly connected to the inner side of the force equalizing plate, and the bottom of the fixed frame is fixedly connected to a limiting component.

[0007] As a preferred embodiment of the utility model, the limit assembly includes a limit block, the top of the limit block is fixedly connected to the bottom of the fixed frame, a plurality of limit blocks are provided and are distributed equidistantly in a rectangular shape, limit bolts are provided on both sides of the fixed frame, and the inner sides of the limit bolts penetrate into the interior of the fixed frame and are threadedly connected to both sides of the main plate.

[0008] As a preferred embodiment of the present invention, both sides of the outer side of the main body plate are fixedly connected with folding frames, and the front side of the folding frames is fixedly connected to both sides of the inner side of the force equalizing plate.

[0009] As a preferred embodiment of the present invention, a connecting frame is provided on the inner side of the force equalizing plate, positioning pieces are fixedly connected to both sides of the inner side of the force equalizing plate, and a surface of the connecting frame is movably connected to a surface of the positioning piece.

[0010] As a preferred embodiment of the present invention, both sides of the top and bottom of the connecting frame are provided with placement grooves, the outer side of the placement groove is provided with a sliding groove, the sliding groove is connected with the placement groove, both sides of the inner side of the force equalizing plate are provided with docking grooves, the docking groove is connected with the placement groove, the inner wall of the placement groove is slidably connected with a connecting shaft, the surface of the connecting shaft is slidably connected with the inner wall of the docking groove, the outer side of the connecting shaft away from the side of the force equalizing plate is fixedly connected with a fixing rod, the surface of the fixing rod is slidably connected with the inner wall of the sliding groove, the outer side of the front side of the inner wall of the sliding groove is provided with a first clamping groove, the fixing rod is clamped with the first clamping groove, the inner side of the surface of the connecting shaft is fixedly connected with a second spring, and the other end of the second spring is fixedly connected to the inner side of the inner wall of the placement groove.

[0011] As a preferred embodiment of the present invention, a second slot is provided on the inner side of the front side of the inner wall of the slide slot, and the fixing rod is engaged with the second slot.

[0012] As a preferred embodiment of the present invention, dampers are fixedly connected to the four corners of the bottom of the box body, and an anti-slip pad is fixedly connected to the bottom of the damper.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a first spring. During transportation, a brief collision occurs between the force equalizing plates, causing the first spring to be squeezed and deformed. The first spring also generates a rebound force to buffer and weaken the force generated by the collision. After the collision, the first spring returns to its original state, which is beneficial for facing the next collision. This solves the problem of vibration force generated by the bumps and shakes of the protective box or collisions between the protective boxes during transportation. However, the protective box lacks a buffer structure, and the vibration force will directly pass through the protective box to vibrate the lithium battery. If the vibration force is repeatedly generated during transportation, the internal part of the lithium battery will be affected, causing short circuit or damage, thereby achieving the effect of auxiliary buffering.

[0015] 2. The utility model sets a limit assembly, which makes it convenient for the operator to put the main body panel into the fixed frame, limit the main body panel by the limit block, and then pass the limit bolt through the fixed frame to connect with the main body panel, so that the main body panel and the fixed frame are fixed to prevent the main body panel from being separated from the fixed frame due to bumps during transportation, thereby improving the connection stability between the main body panel and the fixed frame.

[0016] 3. The utility model provides a folding frame. When the force equalizing plate is subjected to a short-term external force of collision, the first spring is deformed, the first spring generates a rebound force, and the folding frame is also subjected to the extrusion force and folds. When the short-term external force of collision ends, the folding frame returns to its original state due to the rebound force of the first spring, thereby preventing the main plate and the force equalizing plate from being connected only by the first spring. The downward self-hanging force of the force equalizing plate causes the first spring to deform, thereby reducing the effect of the first spring in buffering and weakening the vibration force generated by the collision, thereby improving the stability of the first spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the exploded parts of the main plate of the utility model;

[0019] Figure 3 It is a partial cross-sectional schematic diagram of the connecting frame of the utility model;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the three-dimensional structure of Fangda at A in the middle.

[0021] In the figure: 1. box body; 2. box door; 3. fixed frame; 4. main body plate; 5. first spring; 6. force equalizing plate; 7. limit assembly; 701. limit block; 702. limit bolt; 8. folding frame; 9. connecting frame; 10. positioning member; 11. placement groove; 12. slide groove; 13. docking groove; 14. connecting shaft; 15. fixing rod; 16. first slot; 17. second spring; 18. second slot; 19. damper; 20. anti-slip pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 4 As shown, the utility model provides a protective device for a lithium battery, comprising a box body 1 and a box door 2, the two sides of the back side of the box door 2 are movably connected to the two sides of the top of the back side of the box body 1 through hinges, the top and bottom of the surface of the box body 1 are fixedly connected with a fixed frame 3, a main body plate 4 is arranged on the outer side of the fixed frame 3, the surface of the main body plate 4 is plugged into the inner wall of the fixed frame 3, a first spring 5 is fixedly connected to the outer side of the main body plate 4, a force equalizing plate 6 is arranged on the outer side of the main body plate 4, a plurality of first springs 5 ​​are arranged and distributed at equal distances in a rectangular shape, the other end of the first spring 5 is fixedly connected to the inner side of the force equalizing plate 6, and a limiting component 7 is fixedly connected to the bottom of the fixed frame 3.

[0024] refer to Figure 2 and Figure 4 The limiting assembly 7 includes a limiting block 701, the top of which is fixedly connected to the bottom of the fixed frame 3, and a plurality of limiting blocks 701 are arranged and are distributed equidistantly in a rectangular shape. Limiting bolts 702 are arranged on both sides of the fixed frame 3, and the inner sides of the limiting bolts 702 penetrate into the interior of the fixed frame 3 and are threadedly connected to both sides of the main plate 4.

[0025] As a technical optimization scheme of the utility model, by setting a limit assembly 7, after the operator puts the main body panel 4 into the fixed frame 3, the main body panel 4 is limited by the limit block 701, and then the limit bolt 702 is passed through the fixed frame 3 to connect with the main body panel 4, so that the main body panel 4 and the fixed frame 3 are fixed, preventing the main body panel 4 from being separated from the fixed frame 3 due to bumps during transportation, thereby improving the connection stability between the main body panel 4 and the fixed frame 3.

[0026] refer to Figure 1 and Figure 2 Both sides of the outer side of the main body plate 4 are fixedly connected with a folding frame 8, and the front side of the folding frame 8 is fixedly connected to both sides of the inner side of the force equalizing plate 6.

[0027] As a technical optimization scheme of the utility model, by setting a folding frame 8, when the force equalizing plate 6 is subjected to a short-term collision external force to squeeze the first spring 5 to deform, the first spring 5 generates a rebound force, and the folding frame 8 is also subjected to the squeezing force and folds. When the short-term collision external force ends, the folding frame 8 returns to its original state due to the rebound force of the first spring 5, preventing the main plate 4 and the force equalizing plate 6 from being connected only by the first spring 5. The downward self-hanging force of the force equalizing plate 6 causes the first spring 5 to deform, thereby reducing the effect of the first spring 5 in buffering and weakening the vibration force generated by the collision, thereby improving the stability of the first spring 5.

[0028] refer to Figure 1 and Figure 2 A connecting frame 9 is provided on the inner side of the force equalizing plate 6 , and positioning members 10 are fixedly connected to both sides of the inner side of the force equalizing plate 6 , and the surface of the connecting frame 9 is movably connected to the surface of the positioning member 10 .

[0029] As a technical optimization scheme of the utility model, by setting a connecting frame 9 and a positioning piece 10, before the force equalizing plate 6 is hit during transportation, the user can quickly place the connecting frame 9 into the inner side of the force equalizing plate 6 through the positioning piece 10, and connect the blank area inside the force equalizing plate 6 to prevent the blank area inside the force equalizing plate 6 from being hit without protective measures during a collision. As a result, when the blank area inside the force equalizing plate 6 is hit, it is blocked by the connecting frame 9 and the collision force is transmitted to the force equalizing plate 6 and weakened by the first spring 5 at the same time, and the production cost of the force equalizing plate 6 and the first spring 5 is reduced.

[0030] refer to Figure 2 and Figure 3, both sides of the top and bottom of the connecting frame 9 are provided with placement grooves 11, the outer side of the placement groove 11 is provided with a slide groove 12, and the slide groove 12 is connected to the placement groove 11, and both sides of the inner side of the force equalizing plate 6 are provided with docking grooves 13, and the docking groove 13 is connected to the placement groove 11, and the inner wall of the placement groove 11 is slidably connected with a connecting shaft 14, and the surface of the connecting shaft 14 is slidably connected to the inner wall of the docking groove 13, and the outer side of the connecting shaft 14 away from the side of the force equalizing plate 6 is fixedly connected with a fixing rod 15, and the surface of the fixing rod 15 is slidably connected to the inner wall of the slide groove 12, and the outer side of the front side of the inner wall of the slide groove 12 is provided with a first card groove 16, and the fixing rod 15 is engaged with the first card groove 16, and the inner side of the surface of the connecting shaft 14 is fixedly connected with a second spring 17, and the other end of the second spring 17 is fixedly connected to the inner side of the inner wall of the placement groove 11.

[0031] As a technical optimization solution of the utility model, by setting the placement groove 11, the slide groove 12, the docking groove 13, the connecting shaft 14, the fixing rod 15, the first clamping groove 16 and the second spring 17, before the connecting frame 9 is quickly connected to the force equalizing plate 6 through the positioning member 10, the user first pulls the fixing rod 15 along the track of the slide groove 12 to move the connecting shaft 14 in the placement groove 11. When the connecting shaft 14 moves to a certain position, the fixing rod 15 is flush with the first clamping groove 16, and then the fixing rod 15 is moved to make The fixing rod 15 is engaged with the first slot 16, and the second spring 17 is squeezed and deformed to generate a rebound force, so that the fixing rod 15 applies a pressing force to the first slot 16, and the connecting frame 9 can be connected with the force equalizing plate 6. At this time, the user only needs to move the fixing rod 15 to disengage the fixing rod 15 from the first slot 16. The rebound force of the first spring 5 will push the connecting shaft 14, so that the connecting shaft 14 is located on the inner wall of the placement groove 11 and the docking groove 13 at the same time, thereby achieving the effect of quick installation of the connecting frame 9 and the force equalizing plate 6.

[0032] refer to Figure 3 A second slot 18 is formed on the inner side of the front side of the inner wall of the slide slot 12 , and the fixing rod 15 is engaged with the second slot 18 .

[0033] As a technical optimization scheme of the utility model, by setting the second card slot 18, after the connecting frame 9 is connected to the force equalizing plate 6, the user moves the fixing rod 15 to engage with the second card slot 18 to prevent the shaking caused by the bumps during transportation from making it difficult for the connecting shaft 14 to be supported due to the rebound force of the second spring 17, thereby causing the second spring 17 to be squeezed and deformed, causing the connecting shaft 14 to disengage from the docking groove 13, causing the connecting plate and the force equalizing plate 6 to fall off, thereby improving the stability of the connection between the connecting frame 9 and the force equalizing plate 6.

[0034] refer to Figure 1The four corners of the bottom of the box body 1 are fixedly connected with dampers 19, and the bottom of the damper 19 is fixedly connected with an anti-slip pad 20.

[0035] As a technical optimization scheme of the utility model, by arranging the damper 19 and the anti-skid pad 20, when encountering a continuous bumpy section during the transportation of lithium batteries, the damper 19 will buffer the shaking force generated by the continuous bumps, and at the same time the anti-skid pad 20 will increase the friction between the damper 19 and the transport carriage, preventing the box 1 from bumping up and down due to the bumps and shakes during transportation or causing the box 1 to slide due to the bevel angle and cause damage to the lithium batteries protected in the box 1, thereby improving the stability of the box 1 during transportation.

[0036] The working principle and use process of the utility model are as follows: when in use, the user puts the lithium battery into the box body 1, moves the box cover, closes the box cover and the box body 1, puts the main body plate 4 into the fixed frame 3, limits the main body plate 4 through the limit block 701, passes the limit bolt 702 through the fixed frame 3 and is threadedly connected to the main body plate 4, and after the main body plate 4 and the fixed frame 3 are fixed, the user first pulls the fixing rod 15 to move along the track of the slide groove 12, so that the connecting shaft 14 in the placement groove 11 moves to be flush with the first clamping groove 16, and then moves the fixing rod 15 to make the fixing rod 15 clamped with the first clamping groove 16. At the same time, the second spring 17 is squeezed and deformed to generate a rebound force, so that the fixing rod 15 applies a pressing force to the first slot 16, so that the connecting frame 9 can be quickly connected to the force equalizing plate 6 through the positioning piece 10, and then the fixing rod 15 is moved to disengage the fixing rod 15 from the first slot 16. The rebound force of the first spring 5 will push the connecting shaft 14, so that the connecting shaft 14 is located at the inner wall of the placement groove 11 and the docking groove 13 at the same time, and then the fixing rod 15 is rotated and moved into the second slot 18, and is engaged with the second slot 18, so that the connecting frame 9 is stably connected to the force equalizing plate 6, thereby having the advantage of auxiliary buffering.

[0037] To sum up: the protection device of the lithium battery is provided with a first spring 5. During transportation, a brief collision occurs between the force equalizing plates 6 and the force equalizing plates 6, causing the first spring 5 to be squeezed and deformed. The first spring 5 also generates a rebound force to buffer and weaken the force generated by the collision. After the collision, the first spring 5 returns to its original state, which is conducive to facing the next collision. It solves the vibration force generated by the bumps and shakes of the protective box or the collision of the protective boxes during transportation. However, the protective box lacks a buffer structure, and the vibration force will directly pass through the protective box to vibrate the lithium battery. If the vibration force is repeatedly generated during transportation, the internal part of the lithium battery will be affected, causing short circuit or damage.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery protection device, comprising a box body (1) and a box door (2), characterized in that: Both sides of the back side of the box door (2) are movably connected to both sides of the top side of the back side of the box body (1) through hinges; the top and bottom of the surface of the box body (1) are fixedly connected to a fixed frame (3); a main body plate (4) is arranged on the outside of the fixed frame (3); the surface of the main body plate (4) is plugged into the inner wall of the fixed frame (3); a first spring (5) is fixedly connected to the outside of the main body plate (4); a force equalizing plate (6) is arranged on the outside of the main body plate (4); a plurality of first springs (5) are arranged and are distributed at equal distances in a rectangular shape; the other end of the first spring (5) is fixedly connected to the inner side of the force equalizing plate (6); and a limiting component (7) is fixedly connected to the bottom of the fixed frame (3).

2. A lithium battery protection device according to claim 1, characterized in that: The limiting assembly (7) comprises a limiting block (701), the top of the limiting block (701) being fixedly connected to the bottom of the fixed frame (3), a plurality of limiting blocks (701) being arranged and distributed in a rectangular shape with equal distances, limiting bolts (702) being arranged on both sides of the fixed frame (3), the inner sides of the limiting bolts (702) penetrating into the interior of the fixed frame (3) and being threadedly connected to both sides of the main plate (4).

3. A lithium battery protection device according to claim 2, characterized in that: Both sides of the outer side of the main body plate (4) are fixedly connected with folding frames (8), and the front side of the folding frame (8) is fixedly connected to both sides of the inner side of the force equalizing plate (6).

4. A lithium battery protection device according to claim 3, characterized in that: A connecting frame (9) is provided on the inner side of the force equalizing plate (6), positioning members (10) are fixedly connected to both sides of the inner side of the force equalizing plate (6), and a surface of the connecting frame (9) is movably connected to a surface of the positioning member (10).

5. A lithium battery protection device according to claim 4, characterized in that: The connection frame (9) is provided with a placement groove (11) on both sides of the top and bottom, and a slide groove (12) is provided on the outer side of the placement groove (11), and the slide groove (12) is connected to the placement groove (11). The force equalizing plate (6) is provided with a docking groove (13) on both sides of the inner side, and the docking groove (13) is connected to the placement groove (11). The inner wall of the placement groove (11) is slidably connected with a connecting shaft (14), and the surface of the connecting shaft (14) is slidably connected to the inner wall of the docking groove (13). A fixing rod (15) is fixedly connected to the outer side of the connecting shaft (14) away from the force equalizing plate (6); the surface of the fixing rod (15) is slidably connected to the inner wall of the slide groove (12); a first clamping groove (16) is provided on the outer side of the front side of the inner wall of the slide groove (12); the fixing rod (15) is clamped with the first clamping groove (16); a second spring (17) is fixedly connected to the inner side of the surface of the connecting shaft (14); the other end of the second spring (17) is fixedly connected to the inner side of the inner wall of the placement groove (11).

6. A lithium battery protection device according to claim 5, characterized in that: A second clamping groove (18) is provided on the inner side of the front side of the inner wall of the slide groove (12), and the fixing rod (15) is clamped with the second clamping groove (18).

7. A lithium battery protection device according to claim 1, characterized in that: The four corners of the bottom of the box body (1) are fixedly connected to dampers (19), and the bottom of the damper (19) is fixedly connected to an anti-slip pad (20).

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