Heat-dissipation explosion-proof lithium battery shell

Abstract

The utility model discloses a heat dissipation explosion-proof lithium battery shell which comprises an explosion-proof shell of a hollow square structure, the top end of the explosion-proof shell is provided with a shell top plate, the front end of the explosion-proof shell is fixedly provided with a signal receiving port, a lithium battery is arranged in the explosion-proof shell, and the lithium battery is arranged in the shell. A damping protection mechanism is arranged in the explosion-proof shell, and the lithium battery in the explosion-proof shell is protected through the damping protection mechanism; the damping protection mechanism further comprises a clamping plate which is movably installed in the explosion-proof shell, and a steel pipe is fixedly installed on the clamping plate. The lithium battery in the explosion-proof shell is clamped and fixed through the clamping plates arranged on the two sides, and when the explosion-proof shell is impacted by the outside world through the damper, the damping spring, the limiting plate and the limiting spring, the elastic force of the spring and the impact force borne by the outside world are mutually counteracted, so that the situation that the outside impact directly acts on the lithium battery is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a heat dissipation and explosion-proof lithium battery shell. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive and negative electrode materials and a non-aqueous electrolyte solution. Due to the extremely active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements on the environment.

[0003] For example, publication number: CN219226381U discloses a heat dissipation housing for a lithium battery pack, which belongs to the technical field of lithium battery pack housings. The housing includes: a housing, the open end of which faces upward; a plurality of limit grooves for limiting lithium battery cells are arranged at the bottom of the inner side of the housing; a top cover, which is snap-connected with the housing; a heat dissipation assembly, which includes a fan; a plurality of fans are arranged on the top cover; and the fans face the bottom of the housing.

[0004] The above-mentioned device separates the lithium battery cells by limiting grooves, leaving gaps between adjacent lithium battery cells. When the fan is started, wind blows from top to bottom, blowing towards each lithium battery cell to dissipate heat from the top of the lithium battery cell. However, the heat dissipation and pressure relief of the above-mentioned device are discharged through the ventilation grooves, resulting in a high pressure inside the shell, causing the inside of the explosion-proof shell to shake and vibrate, which can easily cause the lithium battery to collide with its inner wall, thereby causing damage or explosion of the lithium battery. Utility Model Content

[0005] The utility model aims to provide a heat dissipation explosion-proof lithium battery casing to solve the problem in the above background technology that shaking and vibration occur inside the explosion-proof casing, which easily causes the lithium battery to collide with its inner wall, thereby causing damage or explosion of the lithium battery.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation explosion-proof lithium battery shell, comprising an explosion-proof shell in a hollow square structure, wherein a shell top plate is arranged at the top of the explosion-proof shell, and a signal receiving port is fixedly installed at the front end of the explosion-proof shell, a lithium battery is arranged inside the explosion-proof shell, and a shock-absorbing protection mechanism is provided inside the explosion-proof shell, and the lithium battery inside the explosion-proof shell is protected by the shock-absorbing protection mechanism;

[0007] The above-mentioned shock absorbing protection mechanism also includes:

[0008] A clamping plate, which is movably mounted inside the explosion-proof housing, a steel pipe is fixedly mounted on the clamping plate, and a limit spring is fixedly mounted inside the clamping plate;

[0009] A fixing frame, which is fixedly mounted on the inner wall of the explosion-proof housing, and a shock-absorbing damper is fixedly mounted on the fixing frame;

[0010] A connecting rod, which is fixedly mounted inside the explosion-proof housing, and a shock-absorbing spring is mounted around the connecting rod, and a sliding block is slidably mounted on the connecting rod;

[0011] A connecting shaft 1, which is fixedly mounted on the sliding block, and a rotating rod is connected and mounted on the connecting shaft 1;

[0012] A limiting plate is slidably mounted on the clamping plate.

[0013] Preferably, a second connecting shaft is installed on the clamping plate, a rotating rod is connected to the second connecting shaft, and the clamping plate is fixedly connected to the shock absorbing damper.

[0014] Preferably, the sliding block is fixedly connected to the shock absorbing spring, and the sliding block forms an elastic structure on the connecting rod through the shock absorbing spring, and the connecting rod is symmetrically arranged in two groups about the horizontal midline of the fixing frame.

[0015] Preferably, a movable plate is provided on the side of the explosion-proof housing, and a heat dissipation and pressure relief structure is provided inside the explosion-proof housing, and the movable plate is pushed outward by the heat dissipation and pressure relief mechanism to dissipate heat and relieve pressure inside the explosion-proof housing.

[0016] Preferably, the heat dissipation and pressure relief structure further includes:

[0017] A movable block, which is fixedly mounted on the movable plate, and a pressure spring is fixedly mounted on the movable block, and a bellows is fixedly mounted on the movable block;

[0018] A cooling fan is fixedly installed inside the explosion-proof housing, and a temperature sensor is fixedly installed at the bottom of the explosion-proof housing;

[0019] Heat dissipation holes are provided on the movable plate at equal distances;

[0020] A heat conducting plate is fixedly mounted on the clamping plate.

[0021] Preferably, the bottom of the temperature sensor is in contact with the steel pipe, and the steel pipe forms a heat conduction structure through a clamping plate and a heat conducting plate.

[0022] Preferably, the bellows is fixedly installed inside the explosion-proof housing, and the bellows and the movable block form an integrated structure, and the movable block forms an elastic structure in the explosion-proof housing through a pressure spring.

[0023] Compared with the prior art, the utility model has the following beneficial effects: the lithium battery inside the explosion-proof housing is clamped and fixed by the clamping plates arranged on both sides, and when the explosion-proof housing is impacted by the outside world, the elastic force of the spring and the impact force received by the outside world are offset by each other through the damper, the shock absorbing spring, the limit plate and the limit spring, thereby reducing the external impact directly acting on the lithium battery. The specific contents are as follows:

[0024] 1. The lithium battery placed inside the explosion-proof housing is clamped and fixed by the limit plate and the limit spring movably installed on the clamping plate. The sliding range of the limit plate is adapted to the width of different lithium batteries to increase the practicality of the device;

[0025] Furthermore, when the lithium battery is impacted by the outside world, the lithium battery will move in the direction of the impact force, and drive the clamping plate and the connecting shaft 2 to push the two symmetrical rotating rods to change the angle. At the same time, the rotating rod pushes the connecting shaft 1 to move on the connecting rod. At the same time, the connecting shaft 1 squeezes the limit spring through the sliding block, and the spring elastic force and the impact force offset each other.

[0026] 2. The lithium battery placed inside is clamped by the limit plate on the clamping plate, and the heat is conducted through the heat conducting plate in the clamping plate, so that the temperature generated by the lithium battery is transmitted into the explosion-proof housing through heat conduction, thereby reducing the temperature of the lithium battery itself;

[0027] Furthermore, when the temperature of the explosion-proof casing rises to a certain temperature, the internal temperature sensor will transmit an electrical signal to the cooling fan, thereby starting the cooling fan to blow the internal gas, accelerating the interaction with the external gas and improving the heat dissipation effect of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the top view of the explosion-proof housing of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the movable plate of the utility model from a top view;

[0032] Figure 5 This is a schematic diagram of the side view structure of the clamping plate of the utility model;

[0033] Figure 6 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0034] In the figure: 1. explosion-proof casing; 2. casing top plate; 3. movable plate; 4. signal receiving port; 5. clamping plate; 6. fixing frame; 7. sliding block; 8. movable block; 9. pressure spring; 10. bellows; 11. cooling fan; 12. temperature sensor; 13. steel pipe; 14. connecting rod; 15. shock-absorbing spring; 16. shock-absorbing damping; 17. connecting shaft one; 18. rotating rod; 19. limit plate; 20. limit spring; 21. connecting shaft two; 22. heat dissipation hole; 23. lithium battery; 24. heat conduction plate. DETAILED DESCRIPTION

[0035] 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. Example

[0036] In this embodiment, in order to solve the problem that shaking and vibration inside the explosion-proof housing may easily cause the lithium battery 23 to collide with its inner wall, thereby causing the lithium battery 23 to be damaged or exploded, the following solution is disclosed. The specific contents are as follows: Figure 1 , Figure 2 , Figure 3 and Figure 5 , including an explosion-proof shell 1 with a hollow square structure, and a shell top plate 2 is arranged at the top of the explosion-proof shell 1, and a signal receiving port 4 is fixedly installed at the front end of the explosion-proof shell 1, a lithium battery 23 is arranged inside the explosion-proof shell 1, and a shock-absorbing protection mechanism is provided inside the explosion-proof shell 1, and the lithium battery 23 inside the explosion-proof shell 1 is protected by the shock-absorbing protection mechanism; the above-mentioned shock-absorbing protection mechanism also includes: a clamping plate 5, which is movably installed inside the explosion-proof shell 1, and a steel pipe 13 is fixedly installed on the clamping plate 5, and a limit spring 20 is fixedly installed inside the clamping plate 5; a fixing frame 6, which is fixedly installed on the inner wall of the explosion-proof shell 1, and a shock-absorbing damper 16 is fixedly installed on the fixing frame 6; a connecting rod 14, which is fixedly installed inside the explosion-proof casing 1, and a shock-absorbing spring 15 is installed around the connecting rod 14, and a sliding block 7 is slidably installed on the connecting rod 14; a connecting shaft 17, which is fixedly installed on the sliding block 7, and a rotating rod 18 is connected and installed on the connecting shaft 17; a limiting plate 19, which is slidably installed on the clamping plate 5, a connecting shaft 21 is installed on the clamping plate 5, and the connecting shaft 21 is connected to the rotating rod 18, and the clamping plate 5 is fixedly connected to the shock-absorbing damping 16, the sliding block 7 is fixedly connected to the shock-absorbing spring 15, and the sliding block 7 forms an elastic structure on the connecting rod 14 through the shock-absorbing spring 15, and the connecting rod 14 is symmetrically arranged in two groups about the horizontal midline of the fixed frame 6.

[0037] When using the device, the lithium battery 23 is placed in the middle of the clamping plate 5 in the explosion-proof housing 1. At the same time, the lithium battery 23 is fixed and limited by the limit plate 19 on the clamping plate 5 to prevent it from shaking. At the same time, when the explosion-proof housing 1 is impacted, the lithium battery 23 will move along the direction of the impact force, and drive the clamping plate 5 and the connecting shaft 2 21 to push the two symmetrical rotating rods 18 to change the angle. At the same time, the rotating rod 18 pushes the sliding block 7 on the connecting rod 14 through the connecting shaft 1 17 to squeeze the shock-absorbing spring 15, and then offset the impact through the elastic deformation of the shock-absorbing spring 15. Example

[0038] In this embodiment, in order to solve the problem that the internal temperature of the lithium battery 23 is high and the air pressure is large during long-term use, the following solution is disclosed: Figure 4-Figure 6 , including a movable plate 3 provided on the side of the explosion-proof shell 1, and a heat dissipation and pressure relief structure provided inside the explosion-proof shell 1, through which the movable plate 3 is pushed to move outward, and the inside of the explosion-proof shell 1 is heat-dissipated and pressure-relieved, the heat dissipation and pressure relief structure also includes: a movable block 8, which is fixedly mounted on the movable plate 3, and a pressure spring 9 is fixedly mounted on the movable block 8, and a bellows 10 is fixedly mounted on the movable block 8; a heat dissipation fan 11, which is fixedly mounted inside the explosion-proof shell 1, and a temperature sensor 12 is fixedly mounted on the bottom of the explosion-proof shell 1; heat dissipation holes 22, which are equidistantly opened on the movable plate 3; a heat conducting plate 24, which is fixedly mounted on the clamping plate 5, the bellows 10 is fixedly mounted inside the explosion-proof shell 1, and the bellows 10 and the movable block 8 form an integrated structure, and the movable block 8 forms an elastic structure in the explosion-proof shell 1 through the pressure spring 9.

[0039] After the lithium battery 23 is heated up, heat is conducted through the heat conducting plate 24 on the clamping plate 5, and the temperature of the surface of the lithium battery 23 is transferred to the explosion-proof housing 1. At the same time, the bellows 10 in the explosion-proof housing 1 undergoes a certain amount of deformation in a high temperature environment, pushing the movable block 8 and the movable plate 3 to move to the outside of the explosion-proof housing 1, and cooperating with the heat dissipation holes 22 opened on the movable plate 3 to release pressure to prevent excessive internal gas pressure. Example

[0040] Based on the second embodiment, this embodiment further discloses: a structure for assisting the lithium battery 23 in heat transfer, including the bottom of the temperature sensor 12 in contact with the steel pipe 13, and the steel pipe 13 forms a heat conduction structure with the heat conducting plate 24 through the clamping plate 5.

[0041] As the temperature is continuously transmitted to the explosion-proof housing 1 through the heat conducting plate 24, when the temperature reaches the preset value of the temperature sensor 12 in the explosion-proof housing 1, the temperature sensor 12 transmits an electrical signal to the cooling fan 11 to rotate it, and cooperates with the opened movable plate 3 to accelerate the interaction between the explosion-proof housing 1 and the external gas, thereby achieving rapid cooling inside.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] 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 heat dissipation explosion-proof lithium battery casing, comprising an explosion-proof casing (1) in a hollow square structure, wherein a casing top plate (2) is arranged at the top of the explosion-proof casing (1), and a signal receiving port (4) is fixedly installed at the front end of the explosion-proof casing (1), characterized in that: A lithium battery (23) is arranged inside the explosion-proof housing (1), and a shock-absorbing protection mechanism is provided inside the explosion-proof housing (1), and the lithium battery (23) inside the explosion-proof housing (1) is protected by the shock-absorbing protection mechanism; The above-mentioned shock absorbing protection mechanism also includes: A clamping plate (5) is movably mounted inside the explosion-proof housing (1), a steel pipe (13) is fixedly mounted on the clamping plate (5), and a limit spring (20) is fixedly mounted inside the clamping plate (5); A fixing frame (6) fixedly mounted on the inner wall of the explosion-proof housing (1), and a shock absorbing damper (16) fixedly mounted on the fixing frame (6); A connecting rod (14) fixedly mounted inside the explosion-proof housing (1), a shock-absorbing spring (15) being mounted around the connecting rod (14), and a sliding block (7) being slidably mounted on the connecting rod (14); A connecting shaft (17) fixedly mounted on the sliding block (7), and a rotating rod (18) is connected and mounted on the connecting shaft (17); A limiting plate (19) is slidably mounted on the clamping plate (5).

2. The heat dissipation and explosion-proof lithium battery casing according to claim 1, characterized in that: A second connecting shaft (21) is mounted on the clamping plate (5), a rotating rod (18) is connected to the second connecting shaft (21), and the clamping plate (5) is fixedly connected to the shock absorbing damper (16).

3. The heat dissipation and explosion-proof lithium battery casing according to claim 1, characterized in that: The sliding block (7) is fixedly connected to the shock absorbing spring (15), and the sliding block (7) forms an elastic structure on the connecting rod (14) through the shock absorbing spring (15), and the connecting rod (14) is symmetrically arranged in two groups up and down about the horizontal center line of the fixed frame (6).

4. The heat dissipation explosion-proof lithium battery casing according to claim 1, characterized in that: A movable plate (3) is arranged on the side of the explosion-proof housing (1), and a heat dissipation and pressure relief structure is arranged inside the explosion-proof housing (1). The movable plate (3) is pushed outward by the heat dissipation and pressure relief structure to dissipate heat and relieve pressure inside the explosion-proof housing (1).

5. The heat dissipation and explosion-proof lithium battery casing according to claim 4, characterized in that: The heat dissipation and pressure relief structure further includes: A movable block (8) is fixedly mounted on the movable plate (3), a pressure spring (9) is fixedly mounted on the movable block (8), and a bellows (10) is fixedly mounted on the movable block (8); A cooling fan (11) is fixedly mounted inside the explosion-proof housing (1), and a temperature sensor (12) is fixedly mounted on the bottom of the explosion-proof housing (1); Heat dissipation holes (22) are provided on the movable plate (3) at equal intervals; A heat conducting plate (24) is fixedly mounted on the clamping plate (5).

6. The heat dissipation explosion-proof lithium battery casing according to claim 5, characterized in that: The bottom of the temperature sensor (12) is in contact with the steel pipe (13), and the steel pipe (13) forms a heat conduction structure through the clamping plate (5) and the heat conducting plate (24).

7. The heat dissipation explosion-proof lithium battery casing according to claim 5, characterized in that: The bellows (10) is fixedly installed inside the explosion-proof housing (1), and the bellows (10) and the movable block (8) form an integrated structure, and the movable block (8) forms an elastic structure in the explosion-proof housing (1) via a pressure spring (9).

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