Explosion-proof and high-temperature-proof energy storage battery pack

Abstract

The utility model provides an explosion-proof and high-temperature-proof energy storage battery pack, which belongs to the technical field of energy storage battery packs and comprises a box body, a heat dissipation component and an explosion-proof component, a box cover is mounted at the top of the box body; a handle is mounted at the top of the box cover; a mounting cavity is formed in the top of the inner wall of a box body, a valve seat is mounted in the mounting cavity, a through hole is formed in the bottom of the valve seat in a penetrating manner, when gas in a battery pack is rapidly increased and the pressure is increased, and the pressure in the box body is too large, high-pressure gas enters the through hole to push open a valve membrane, and the valve membrane moves in a limiting groove and extrudes a spring; at the moment, high-pressure gas is exhausted through the through hole and exhausted to the outside of the box body through the exhaust pipe at the top of the valve seat, so that the internal pressure of the box body is reduced, and explosion caused by overhigh internal pressure of the battery pack is prevented.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery pack technology, specifically an explosion-proof and high-temperature resistant energy storage battery pack. Background Technology

[0002] With societal development, energy storage battery packs are becoming increasingly widely used. An energy storage battery pack consists of multiple energy storage batteries connected in series within a housing structure; the more batteries, the greater the charging power. During operation, the batteries continuously generate heat, creating temperature differences between them. If this heat cannot be dissipated promptly, it can shorten the battery's lifespan and even affect the lifespan of the entire battery pack and the entire energy storage system. To prevent overheating, most existing energy storage battery packs use fans to ventilate and cool the battery compartment. However, the temperature changes significantly during charging and discharging. When a short circuit or thermal runaway occurs inside the battery pack, the gas inside rapidly increases, leading to a rapid increase in pressure. If the gas cannot escape from the battery pack casing in time, it can easily cause the battery pack to explode. Utility Model Content

[0003] The purpose of this invention is to provide an explosion-proof and high-temperature resistant energy storage battery pack to solve the problem mentioned in the background art: when a short circuit or thermal runaway occurs inside the battery pack, the gas inside the battery pack increases rapidly, the pressure increases rapidly, and the gas inside the battery pack shell cannot be discharged in time, which can easily lead to the battery pack explosion.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof and high-temperature resistant energy storage battery pack, comprising: a housing, a heat dissipation component, and an explosion-proof component;

[0005] Wherein: the top of the box is equipped with a box cover, and the top of the box cover is equipped with a handle;

[0006] The heat dissipation assembly includes a support frame installed on the inner wall of the casing. Several heat dissipation fins are fixedly connected to the inner wall of the support frame. Cooling pipes are interspersed inside the heat dissipation fins in an S-shape. Thermally conductive silicone pads are connected to the surface of the heat dissipation fins. The thermally conductive silicone pads are in contact with the surface of the internal battery pack. One end of the cooling pipe is connected to a water inlet pipe, and the other end of the cooling pipe is connected to a water outlet pipe.

[0007] The explosion-proof component includes a mounting cavity that extends through the top of the inner wall of the enclosure. A valve seat is installed inside the mounting cavity. A through hole is provided at the bottom of the valve seat. A valve diaphragm is provided inside the through hole. An exhaust pipe is installed at the top of the valve seat. A spring is fitted at one end of the exhaust pipe. The spring is in contact with the valve diaphragm.

[0008] As a preferred embodiment of this utility model: a limiting groove is provided in the middle of the valve seat, and the valve diaphragm slides inside the limiting groove.

[0009] As a preferred embodiment of the present invention: the top of the through hole is provided with a tapered part, the inner wall of the tapered part is provided with an annular groove, and the bottom of the valve diaphragm is fitted with a sealing ring, which is embedded in the annular groove.

[0010] As a preferred embodiment of this utility model: a fixing frame is installed inside the box, and the battery pack is installed inside the fixing frame.

[0011] As a preferred embodiment of this utility model: hooks are installed on both sides of the box body, and latches are installed on both sides of the box cover, and the latches are fastened to the hooks.

[0012] As a preferred embodiment of this utility model, a waterproof sealing strip is installed on the inner edge of the box cover.

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

[0014] (1) A support frame is installed on the inner wall of the box. Heat dissipation fins are fixedly connected inside the support frame. Thermally conductive silicone pads are connected to the surface of the heat dissipation fins. When the battery pack is working, the heat inside is transferred to the surface of the heat dissipation fins through the thermally conductive silicone pads. Cooling pipes are inserted inside the heat dissipation fins. Coolant enters the cooling pipes through the inlet pipe. The cooling pipes are distributed in an S-shape inside the heat dissipation fins to increase the contact area, so that the coolant can carry away more heat when it flows through. The coolant is finally discharged from the outlet pipe, so as to achieve efficient heat dissipation and replace the fan cooling method.

[0015] (2) With the provided explosion-proof components, an installation cavity is provided on the top of the inner wall of the box, and a valve seat is installed inside the installation cavity. A through hole is provided at the bottom of the valve seat. When the gas inside the battery pack increases rapidly and the pressure increases, and the pressure inside the box is too high, the high-pressure gas enters the through hole and opens the valve diaphragm. The valve diaphragm moves inside the limiting groove and squeezes the spring. At this time, the high-pressure gas is discharged through the through hole, and the gas is discharged to the outside of the box through the exhaust pipe on the top of the valve seat, so that the pressure inside the box is reduced and an explosion is prevented when the pressure inside the battery pack is too high. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0019] Figure 4This is a schematic diagram of the explosion-proof component structure of this utility model.

[0020] In the diagram: 1. Box body; 2. Box cover; 3. Handle; 4. Heat dissipation assembly; 41. Support frame; 42. Heat dissipation fins; 43. Cooling pipe; 44. Thermally conductive silicone pad; 45. Water inlet pipe; 46. Water outlet pipe; 5. Explosion-proof assembly; 51. Mounting cavity; 52. Valve seat; 53. Through hole; 54. Valve diaphragm; 55. Exhaust pipe; 56. Spring; 57. Limiting groove; 6. Conical part; 7. Annular groove; 8. Sealing ring; 9. Fixing bracket; 10. Battery pack; 11. Hook; 12. Lock; 13. Waterproof sealing strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: an explosion-proof and high-temperature resistant energy storage battery pack, including: a box body 1, a heat dissipation component 4 and an explosion-proof component 5; a box cover 2 is installed on the top of the box body 1, and a handle 3 is installed on the top of the box cover 2;

[0023] Please see Figure 1 , Figure 3 In this embodiment: the heat dissipation assembly 4 includes a support frame 41 installed on the inner wall of the housing 1. A plurality of heat dissipation fins 42 are fixedly connected to the inner wall of the support frame 41. Cooling pipes 43 are interspersed inside the heat dissipation fins 42 in an S-shape. Thermally conductive silicone pads 44 are connected to the surface of the heat dissipation fins 42. The thermally conductive silicone pads 44 are in contact with the surface of the internal battery pack 10. One end of the cooling pipe 43 is connected to a water inlet pipe 45, and the other end of the cooling pipe 43 is connected to a water outlet pipe 46.

[0024] In practical use: A support frame 41 is installed on the inner wall of the housing 1. A heat dissipation fin 42 is fixedly connected inside the support frame 41. A thermally conductive silicone pad 44 is connected to the surface of the heat dissipation fin 42. When the battery pack 10 is working, the heat inside is transferred to the surface of the heat dissipation fin 42 through the thermally conductive silicone pad 44. A cooling pipe 43 is inserted inside the heat dissipation fin 42. The coolant enters the cooling pipe 43 through the water inlet pipe 45. The cooling pipe 43 is S-shaped and distributed inside the heat dissipation fin 42 to increase the contact area, so that the coolant can carry away more heat when it flows through. The coolant is finally discharged from the water outlet pipe 46, which achieves efficient heat dissipation and replaces the fan cooling method.

[0025] Please seeFigure 1 , Figure 4 In this embodiment: the explosion-proof component 5 includes an installation cavity 51 that extends through the top of the inner wall of the housing 1. A valve seat 52 is installed inside the installation cavity 51. A through hole 53 is provided through the bottom of the valve seat 52. A valve diaphragm 54 is provided inside the through hole 53. An exhaust pipe 55 is installed on the top of the valve seat 52. A spring 56 is sleeved on one end of the exhaust pipe 55. The spring 56 is in contact with the valve diaphragm 54. A limiting groove 57 is provided in the middle of the valve seat 52. The valve diaphragm 54 slides inside the limiting groove 57.

[0026] In practical use: The top of the inner wall of the housing 1 has an installation cavity 51, and a valve seat 52 is installed inside the installation cavity 51. A through hole 53 is opened through the bottom of the valve seat 52. When the gas inside the battery pack 10 increases rapidly and the pressure increases, and the pressure inside the housing 1 becomes too high, the high-pressure gas enters the through hole 53 and pushes open the valve diaphragm 54. The valve diaphragm 54 moves inside the limiting groove 57 and squeezes the spring 56. At this time, the high-pressure gas is discharged through the through hole 53 and the gas is discharged to the outside of the housing 1 through the exhaust pipe 55 at the top of the valve seat 52, so that the pressure inside the housing 1 is reduced and the battery pack 10 is prevented from exploding when the internal pressure is too high.

[0027] Please see Figure 1 , Figure 4 In this embodiment: the top of the through hole 53 is provided with a tapered part 6, the inner wall of the tapered part 6 is provided with an annular groove 7, and the bottom of the valve diaphragm 54 is fitted with a sealing ring 8, which is embedded in the annular groove 7.

[0028] In practical use: The top of the through hole 53 is provided with a conical part 6, and the inner wall of the conical part 6 is provided with an annular groove 7. The bottom of the valve diaphragm 54 is fitted with a sealing ring 8. When the pressure inside the box 1 gradually decreases, the spring 56 pushes the valve diaphragm 54 to move towards the conical part 6 so that the sealing ring 8 is embedded in the annular groove 7, preventing gas from flowing between the box 1 and the outside through the through hole 53.

[0029] Please see Figure 2 In this embodiment: a fixing frame 9 is installed inside the housing 1, and the battery pack 10 is installed inside the fixing frame 9.

[0030] In actual use: A fixing frame 9 is installed inside the housing 1, and the battery pack 10 is fixedly installed in the housing 1 through the fixing frame 9.

[0031] Please see Figure 1 In this embodiment: hooks 11 are installed on both sides of the box body 1, and latches 12 are installed on both sides of the box cover 2, and the latches 12 are fastened to the hooks 11.

[0032] In actual use: Hooks 11 are installed on both sides of the box body 1, and latches 12 are installed on both sides of the box cover 2. When the box body 1 is opened to replace the battery pack 10, the latches 12 and hooks 11 are unlocked to remove the box cover 2.

[0033] Please see Figure 2 In this embodiment, a waterproof sealing strip 13 is installed on the inner edge of the box cover 2.

[0034] In practical use: The inner edge of the lid 2 has a waterproof sealing strip 13 to increase the sealing performance of the box 1.

[0035] An installation cavity 51 is provided at the top of the inner wall of the housing 1. A valve seat 52 is installed inside the installation cavity 51. A through hole 53 is provided at the bottom of the valve seat 52. When the gas inside the battery pack 10 increases rapidly and the pressure increases, the pressure inside the housing 1 becomes too high. The high-pressure gas enters the through hole 53 and pushes open the valve diaphragm 54. The valve diaphragm 54 moves inside the limiting groove 57 and squeezes the spring 56. At this time, the high-pressure gas is discharged through the through hole 53. The gas is discharged to the outside of the housing 1 through the exhaust pipe 55 at the top of the valve seat 52, which reduces the pressure inside the housing 1 and prevents the battery pack 10 from exploding when the internal pressure becomes too high.

[0036] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An explosion-proof and high-temperature resistant energy storage battery pack, characterized in that, include: Box body (1), the top of the box body (1) is fitted with a box cover (2), and the top of the box cover (2) is fitted with a handle (3); The heat dissipation assembly (4) includes a support frame (41) installed on the inner wall of the housing (1). Several heat dissipation fins (42) are fixedly connected to the inner wall of the support frame (41). Cooling pipes (43) are interspersed in an S-shape inside the heat dissipation fins (42). Thermally conductive silicone pads (44) are connected to the surface of the heat dissipation fins (42). The thermally conductive silicone pads (44) are in contact with the surface of the internal battery pack (10). One end of the cooling pipe (43) is connected to a water inlet pipe (45), and the other end of the cooling pipe (43) is connected to a water outlet pipe (46). An explosion-proof component (5) includes an installation cavity (51) that extends through the top of the inner wall of the housing (1). A valve seat (52) is installed inside the installation cavity (51). A through hole (53) is provided at the bottom of the valve seat (52). A valve diaphragm (54) is provided inside the through hole (53). An exhaust pipe (55) is installed at the top of the valve seat (52). A spring (56) is fitted at one end of the exhaust pipe (55). The spring (56) is in contact with the valve diaphragm (54).

2. The explosion-proof and high-temperature resistant energy storage battery pack according to claim 1, characterized in that: A limiting groove (57) is provided in the middle of the valve seat (52), and the valve diaphragm (54) slides inside the limiting groove (57).

3. The explosion-proof and high-temperature resistant energy storage battery pack according to claim 1, characterized in that: The top of the through hole (53) is provided with a tapered part (6), and the inner wall of the tapered part (6) is provided with an annular groove (7). The bottom of the valve diaphragm (54) is provided with a sealing ring (8), and the sealing ring (8) is embedded in the annular groove (7).

4. The explosion-proof and high-temperature resistant energy storage battery pack according to claim 1, characterized in that: The housing (1) is equipped with a mounting bracket (9), and the battery pack (10) is installed inside the mounting bracket (9).

5. The explosion-proof and high-temperature resistant energy storage battery pack according to claim 1, characterized in that: Hooks (11) are installed on both sides of the box body (1), and buckles (12) are installed on both sides of the box cover (2). The buckles (12) are fastened to the hooks (11).

6. The explosion-proof and high-temperature resistant energy storage battery pack according to claim 1, characterized in that: The inner edge of the lid (2) is fitted with a waterproof sealing strip (13).

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