CN219591481U - Explosion-proof device of lithium battery pack - Google Patents

Abstract

The utility model discloses an explosion-proof device of a lithium battery pack, which relates to the field of safety of the lithium battery pack, and aims at solving the problems of certain limitation, such as heavy weight, huge volume and poor heat dissipation effect, of the traditional explosion-proof device of the lithium battery pack.

Description

Explosion-proof device of lithium battery pack

Technical Field

The utility model relates to the field of safety of lithium battery packs, in particular to an anti-explosion device of a lithium battery pack.

Background

Along with the development of technology, lithium batteries have been widely used in various electronic devices, such as mobile phones, notebook computers, electric vehicles, etc. However, the lithium battery may have thermal runaway due to internal short circuit, overcharge, overdischarge and other reasons in the charge and discharge process, so as to cause deflagration, and seriously threaten personal and property safety, and the existing anti-explosion device has certain limitations, such as large weight, huge volume, poor heat dissipation effect and the like.

Disclosure of Invention

The utility model provides an explosion-proof device for a lithium battery pack, which solves the problems of certain limitations, such as heavy weight, huge volume and poor heat dissipation effect, of the traditional explosion-proof device for the lithium battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a lithium battery pack anti-explosion device, includes the roof, the top upper end of roof is provided with battery spark detector, one side of battery spark detector is provided with pressure sensor, one side of pressure sensor is provided with alarm device, inside megaphone that is provided with in one side of alarm device, and one side of alarm device is provided with temperature sensor, one side of temperature sensor is provided with the relief valve, one side of relief valve is provided with control module, the bottom lower extreme of roof is connected with battery frame, the bottom lower extreme of battery frame is connected with the heat dissipation frame;

the battery frame comprises a frame outer plate, wherein the frame outer plate is connected with the heat dissipation plate, an explosion-proof plate is arranged in the frame outer plate, and a lithium battery pack is arranged in the explosion-proof plate; the heat dissipation frame comprises a heat dissipation plate, the bottom lower extreme of heat dissipation plate is connected with the fin, the bottom lower extreme of fin is provided with the fan, the bottom lower extreme of fan is connected with the motor, drives the fan through the engine motor and rotates to dispel the heat with higher speed to fin and heating panel.

Preferably, the battery spark detector, the pressure sensor, the alarm device, the temperature sensor, the safety valve and the motor are electrically connected with the control module, so that the control module can collect data of the spark detector, the temperature sensor and the pressure sensor to monitor the safety condition of the lithium battery pack in real time.

Preferably, the surface of the lithium battery pack is connected with an explosion-proof membrane, and the two sides of the lithium battery pack are connected with pole posts, and the pole posts extend to the outside of the battery frame through the notch so as to facilitate connection of the circuit.

Preferably, the notch penetrates through the explosion-proof plate and is formed on the surface of the outer plate of the frame, two pole posts are arranged and divided into positive and negative poles and are respectively arranged on two sides of the lithium battery pack, and short circuits are prevented from being generated by staggered lines.

Preferably, the heating panel passes through the connecting piece to be connected in the both sides top of heat dissipation frame, the motor is connected in heat dissipation frame's inside bottom plate, and it becomes a whole to connect heating panel and heat dissipation frame through the connecting piece, compact structure, and the heat on fin surface is can be assisted to the drive fan through the motor operation runs off with higher speed, drives inside and outside air flow simultaneously, improves the radiating effect.

Preferably, the two sides of the heat dissipation frame are inwards provided with ventilation holes, so that hot air can flow out when the fan rotates, cold air enters, and circulation is formed alternately to accelerate heat loss.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the safety condition of the lithium battery pack is monitored in real time by adopting the battery spark detector, the temperature sensor and the pressure sensor, and the control module is used for collecting information of all safety data of the lithium battery pack, so that potential safety hazards of the lithium battery pack can be timely found and processed, alarm prompt is carried out by the alarm device, and meanwhile, the safety valve is controlled to be automatically opened when the internal pressure of the lithium battery pack is too high, the too high pressure is released, and a certain explosion risk can be reduced.

2. Meanwhile, through the radiating plate, the radiating fins and the fans arranged inside the radiating frame and the ventilation holes formed in the surfaces of the two sides of the radiating frame, redundant heat generated inside the lithium battery pack can be effectively discharged, and the occurrence of thermal runaway phenomenon is avoided.

3. And, through wrapping up the rupture membrane in the outside of lithium cell group, can effectively prevent the deflagration that fire spreading and thermal runaway lead to, through setting up the explosion-proof board between battery frame inside and rupture membrane, can produce double-deck explosion-proof effect, the secondary prevents that the fire spreading and can prevent that the unexpected piece that explodes the production of lithium cell from splashing everywhere and causing personnel's injury, has certain safety protection effect.

In conclusion, after the structure of the utility model is adopted, the explosion-proof device of the lithium battery pack has the functions of real-time monitoring, timely alarming, effective heat dissipation, explosion prevention and the like, the risk of explosion of the lithium battery pack can be greatly reduced, and the safety performance of a lithium battery is improved.

Drawings

FIG. 1 is a schematic diagram of the front structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view of an exploded view of a battery frame according to the present utility model;

FIG. 4 is a schematic view of an explosion structure of a heat dissipation frame according to the present utility model;

fig. 5 is a schematic structural view of a connector according to the present utility model.

Reference numerals in the drawings: 1. a top plate; 2. a battery frame; 3. a heat dissipation frame; 4. a battery spark detector; 5. a pressure sensor; 6. an alarm device; 7. a loudspeaker; 8. a temperature sensor; 9. a safety valve; 10. a control module; 11. a frame outer plate; 12. a lithium battery pack; 13. a pole; 14. an explosion-proof membrane; 15. an explosion-proof plate; 16. a notch; 17. a heat dissipation plate; 18. a heat sink; 19. a connecting piece; 20. a fan; 21. a motor; 22. and (3) a vent hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 5, an explosion-proof device of a lithium battery pack comprises a top plate 1, wherein a battery spark detector 4 is arranged at the upper end of the top plate 1, a pressure sensor 5 is arranged on one side of the battery spark detector 4, an alarm device 6 is arranged on one side of the pressure sensor 5, a loudspeaker 7 is arranged inside one side of the alarm device 6, a temperature sensor 8 is arranged on one side of the alarm device 6, a safety valve 9 is arranged on one side of the temperature sensor 8, a control module 10 is arranged on one side of the safety valve 9, a battery frame 2 is connected to the lower end of the bottom of the top plate 1, and a heat dissipation frame 3 is connected to the lower end of the bottom of the battery frame 2; the battery frame 2 comprises a frame outer plate 11, wherein the frame outer plate 11 is connected with a heat dissipation plate 17, an explosion-proof plate 15 is arranged in the frame outer plate 11, and a lithium battery pack 12 is arranged in the explosion-proof plate 15; the heat dissipation frame 3 includes heating panel 17, and the bottom lower extreme of heating panel 17 is connected with fin 18, and the bottom lower extreme of fin 18 is provided with fan 20, and the bottom lower extreme of fan 20 is connected with motor 21, and fan 20 is used for accelerating the fin radiating effect, and when temperature sensor 8 detects lithium cell group 12 high temperature, fan 20 can start voluntarily, discharges unnecessary heat fast, keeps the normal operating temperature of lithium cell group 12.

Battery spark detector 4, pressure sensor 5, alarm device 6, temperature sensor 8, relief valve 9 and motor 21 and control module 10 electric connection, the surface connection of lithium cell group 12 has explosion-proof membrane 14, and the both sides of lithium cell group 12 are connected with utmost point post 13, utmost point post 13 extends to the outside of battery frame 2 through notch 16, notch 16 runs through explosion-proof plate 15 and sets up to the surface of frame planking 11, utmost point post 13 is equipped with two, divide into positive negative pole and set up respectively in the both sides of lithium cell group 12, heating panel 17 passes through connecting piece 19 and connects in the both sides top of heat dissipation frame 3, motor 21 connects in the inside bottom plate of heat dissipation frame 3, ventilation hole 22 has been inwards seted up to the both sides of heat dissipation frame 3, can be effectively with the inside unnecessary heat of producing of lithium cell group discharge through the ventilation hole, avoid the thermal runaway phenomenon to take place.

Working principle: as shown in fig. 1 to 5, the structure of the present utility model includes a top plate 1, a battery frame 2, and a heat dissipation frame 3; the top surface of the top plate 1 is provided with a battery spark detector 4, a pressure sensor 5, an alarm device 6, a temperature sensor 8 and a control module 10 for collecting the data and controlling the device, wherein the battery spark detector is used for monitoring various safety data information of the lithium battery pack 12; the inside of the battery frame 2 is provided with a double-layer explosion-proof structure, which comprises an explosion-proof plate 15 connected to the inner wall of the battery frame 2 and an explosion-proof film 14 wrapped on the surface of the lithium battery pack 12, can effectively prevent flame and explosion, and the two sides of the lithium battery pack 12 are respectively provided with an anode post 13 and a cathode post 13 for distinguishing the anode from the cathode and separating the anode and the cathode so as to avoid short circuit caused by staggered lines; the ventilation holes 22 are formed in two sides of the outer portion of the heat dissipation frame 3, the heat dissipation plate 17 is arranged in the heat dissipation frame 3, the cooling fins 18 are distributed at the bottom of the heat dissipation plate 17, the motor 21 is arranged at the bottom of the inner wall of the heat dissipation frame 3, the motor 21 is connected with the fan 20, the fan 20 faces the cooling fins 18 and the heat dissipation plate 17, the motor 21 can rotate through the fan 20 to accelerate heat dissipation, heat is enabled to circulate outwards from the cooling fins 18 through the ventilation holes 22, and cold air flows into the heat dissipation frame to drive air circulation to accelerate cooling.

In the use process, various safety information data of the lithium battery pack 12 are collected through the control module 10, the starting and closing of the alarm device 6, the motor 21 and the safety valve 9 are controlled according to the monitoring data, a double explosion-proof structure is arranged at the storage structure of the lithium battery pack 12, the explosion-proof membrane 14 and the explosion-proof plate 15 have good flame retardance and high temperature resistance, and deflagration caused by fire spreading and thermal runaway can be effectively prevented; the heat radiation structure absorbs the redundant heat generated by the operation of the lithium battery pack 12 through the heat radiation plate 17 and the heat radiation fins 18, so that the motor 21 operates to drive the fan 20 to rotate, thereby driving the air in the heat radiation frame 3 to circulate and accelerating the heat radiation speed of the heat radiation fins 18.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a lithium battery pack anti-explosion device, includes roof (1), its characterized in that, the top upper end of roof (1) be provided with battery spark detector (4), one side of battery spark detector (4) be provided with pressure sensor (5), one side of pressure sensor (5) be provided with alarm device (6), one side of alarm device (6) inside be provided with megaphone (7), and one side of alarm device (6) be provided with temperature sensor (8), one side of temperature sensor (8) be provided with relief valve (9), one side of relief valve (9) be provided with control module (10), the bottom lower extreme of roof (1) be connected with battery frame (2), the bottom lower extreme of battery frame (2) be connected with heat dissipation frame (3);

the battery frame (2) comprises a frame outer plate (11), the frame outer plate (11) is connected to a heat dissipation plate (17), an explosion-proof plate (15) is arranged in the frame outer plate (11), and a lithium battery pack (12) is arranged in the explosion-proof plate (15); the heat dissipation frame (3) comprises a heat dissipation plate (17), wherein the lower end of the bottom of the heat dissipation plate (17) is connected with a heat dissipation plate (18), the lower end of the bottom of the heat dissipation plate (18) is provided with a fan (20), and the lower end of the bottom of the fan (20) is connected with a motor (21).

2. The explosion-proof device of a lithium battery pack according to claim 1, wherein the battery spark detector (4), the pressure sensor (5), the alarm device (6), the temperature sensor (8), the safety valve (9) and the motor (21) are electrically connected with the control module (10).

3. The explosion-proof device of a lithium battery pack according to claim 1, wherein the surface of the lithium battery pack (12) is connected with an explosion-proof membrane (14), and two sides of the lithium battery pack (12) are connected with pole posts (13), and the pole posts (13) extend to the outside of the battery frame (2) through the notch (16).

4. A lithium battery pack explosion-proof device according to claim 3, wherein the notch (16) penetrates through the explosion-proof plate (15) and is formed on the surface of the outer plate (11) of the frame, and the two poles (13) are divided into positive and negative poles and are respectively arranged on two sides of the lithium battery pack (12).

5. The explosion-proof device of the lithium battery pack according to claim 1, wherein the heat dissipation plate (17) is connected to the top parts of two sides of the heat dissipation frame (3) through a connecting piece (19), and the motor (21) is connected to the inner bottom plate of the heat dissipation frame (3).

6. The explosion-proof device of the lithium battery pack according to claim 1, wherein the two sides of the heat dissipation frame (3) are provided with vent holes (22) inwards.