Battery with explosion-proof structure

Abstract

The utility model discloses a battery with an explosion-proof structure, which relates to the technical field of batteries and comprises an explosion-proof shell, the top of the explosion-proof shell is fixedly connected with an explosion-proof cover through a bolt, an explosion-proof valve is arranged in the middle of the upper surface of the explosion-proof cover, radiating grooves are formed in the left and right symmetrical positions of the upper surface of the explosion-proof cover, and the radiating grooves are communicated with the explosion-proof shell. Fixing plates are fixedly connected to the left side and the right side of the top of the anti-explosion cover correspondingly, and two electric push rods are installed on the sides, away from each other, of the two fixing plates correspondingly. The temperature in the explosion-proof shell is monitored through the temperature sensor, after the battery is used for a long time, the battery generates heat, when the temperature is too high, the fan is controlled to be turned on, the electric push rod is started to drive the sealing plate to move left and right, then the heat dissipation groove is communicated with the outside, and then the fan discharges the heat through the heat dissipation groove; the interior of the explosion-proof shell is at a normal temperature level, and the situation of explosion caused by short circuit of the battery due to over-high temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to batteries, and in particular to a battery with an explosion-proof structure. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy for the storage and supply of electricity. It consists of one or more battery cells, each of which contains a positive electrode, a negative electrode and an electrolyte. The positive and negative electrodes are connected by ions in the electrolyte to generate current. When an external circuit is connected to the battery, ions move in the electrolyte to generate electricity.

[0003] The Chinese patent provides an explosion-proof structure and battery (CN202120789734.8), including a cover plate, an explosion-proof valve and a protective film. The cover plate is provided with an explosion-proof hole, and a groove is concavely provided on the cover plate. The groove and the explosion-proof hole are spaced apart, and the groove wall and the edge of the explosion-proof hole are provided with a through hole. The protective film and the explosion-proof valve block the explosion-proof hole, and the protective film is higher than the through hole, and the explosion-proof valve is lower than the through hole. The explosion-proof structure of the utility model has timely pressure relief and good pressure relief effect, and also prevents the pressure in the battery from exceeding the rated bearing value, and also prevents foreign matter from entering the battery and polluting the internal environment of the battery.

[0004] The explosion-proof measures of the battery in the above scheme are too simple and the explosion-proof function is relatively single. Due to the chemical reaction and stored energy inside the battery, the battery is easily short-circuited or externally damaged when affected by external physical factors, which will cause the battery to overheat and then create the risk of explosion. In order to reduce this risk, a battery with an explosion-proof structure is provided to solve the above problem. Utility Model Content

[0005] In order to solve the above technical problems, a battery with an explosion-proof structure is provided. The technical solution solves the problem that the explosion-proof measures of the battery in the existing solution proposed in the above background technology are too simple. Due to the chemical reaction and stored energy inside the battery, when affected by external physical factors, the battery is prone to short circuit or external damage, resulting in battery overheating and explosion.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a battery with an explosion-proof structure, comprising an explosion-proof shell, the top of the explosion-proof shell is fixedly connected to the explosion-proof cover by bolts, an explosion-proof valve is arranged at the center position of the upper surface of the explosion-proof cover, heat dissipation grooves are opened at left and right symmetrical positions on the upper surface of the explosion-proof cover, the left and right sides of the top of the explosion-proof cover are fixedly connected with fixing plates, two electric push rods are installed on the sides of the two fixing plates away from each other, the output end of the electric push rod passes through the outer wall of the fixing plate and is fixedly connected to the sealing plate, the inner wall of the explosion-proof shell is provided with a temperature sensor, the temperature sensor is electrically connected to the external control terminal, the inner wall of the explosion-proof shell is fixedly connected with a guide rod at a lower position, and dampers are arranged at both ends of the guide rod.

[0007] Optionally, a sliding block is provided at the bottom of the sealing plate, a sliding groove is provided on the inner side wall of the heat dissipation groove, and the sliding block is slidably connected to the inside of the sliding groove.

[0008] Optionally, a mounting groove is provided on the inner bottom surface of the explosion-proof housing, a fan is fixedly installed inside the mounting groove, the fan is electrically connected to the battery, and a wiring port is provided at the lower right corner of the front side of the explosion-proof housing.

[0009] Optionally, both sides of the surface of the guide rod are slidably connected with moving blocks, the top of the moving block is fixedly connected with a connecting block 1, and the connecting block 1 is transmission-connected to the connecting rod via a connecting shaft.

[0010] Optionally, one end of the connecting rod away from the connecting block one is transmission-connected to the connecting block two via a connecting shaft, and a mounting plate is fixedly connected to the top of the connecting block two.

[0011] Optionally, both left and right sides of the mounting plate are fixed to the inner wall of the explosion-proof housing through a second spring.

[0012] Optionally, a battery is fixedly mounted on the upper surface of the mounting plate, and an output terminal of the battery is electrically connected to an external electrical device via a wiring port.

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

[0014] 1. This solution first monitors the temperature inside the explosion-proof housing through a temperature sensor. After using the battery for a long time, the battery will generate heat. When the temperature is too high, the fan will be turned on and the electric push rod will be started to drive the sealing plate to move left and right, thereby connecting the heat sink to the outside. The fan will then discharge the heat through the heat sink, so that the inside of the explosion-proof housing is at a normal temperature level, avoiding excessive temperature causing a short circuit in the battery, which in turn causes an explosion.

[0015] 2. Then, the damper, the first spring and the second spring are used to buffer the impact force of the outside on the battery, thereby ensuring that the external impact force does not affect the battery inside the explosion-proof housing, thereby avoiding the battery being damaged and exploded due to the impact force.

[0016] 3. Finally, an explosion-proof valve is used to prevent battery explosion. The explosion-proof valve has a built-in pressure sensor that can sense the pressure changes inside the explosion-proof shell. When the pressure rises to the set safety threshold, the valve will automatically open. Once the valve is opened, it will allow the internal pressure of the explosion-proof shell to be released and exhaust excess gas, thus preventing the battery from exploding due to excessive pressure. When the internal pressure drops to a safe range, the valve will automatically close to keep the explosion-proof shell closed. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Description of reference numerals:

[0020] 1. Explosion-proof housing; 11. Explosion-proof cover; 12. Explosion-proof valve; 13. Heat dissipation slot; 14. Fixing plate; 15. Electric push rod; 16. Sealing plate; 17. Slider; 18. Slide; 19. Mounting slot; 110. Fan; 111. Wiring port;

[0021] 2. Temperature sensor;

[0022] 3. Guide rod; 31. Damper; 32. Moving block; 33. First spring; 34. Connecting block 1; 35. Connecting rod; 36. Connecting block 2; 37. Mounting plate; 38. Second spring;

[0023] 4. Battery. DETAILED DESCRIPTION

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0025] Reference Figure 1As shown, a battery with an explosion-proof structure includes an explosion-proof shell 1, the top of the explosion-proof shell 1 is fixedly connected to the explosion-proof cover 11 by bolts, and an explosion-proof valve 12 is arranged at the center of the upper surface of the explosion-proof cover 11. The explosion-proof valve 12 is used to prevent the battery 4 from exploding. The explosion-proof valve 12 has a built-in pressure sensor, which can sense the pressure change inside the explosion-proof shell 1. When the pressure rises to a set safety threshold, the valve will automatically open. Once the valve is opened, it will allow the internal pressure of the explosion-proof shell 1 to be released and the excess gas will be discharged, so as to prevent the battery 4 from exploding due to excessive pressure. When the internal pressure drops to a safe range, the valve will automatically close to keep the explosion-proof shell 1 in a closed state.

[0026] Optional, such as Figure 1-2 As shown, heat dissipation grooves 13 are provided at left and right symmetrical positions on the upper surface of the explosion-proof cover 11, and fixed plates 14 are fixedly connected to the left and right sides of the top of the explosion-proof cover 11. Two electric push rods 15 are installed on the sides of the two fixed plates 14 that are away from each other. The output end of the electric push rod 15 passes through the outer wall of the fixed plate 14 and is fixedly connected to the sealing plate 16. A slider 17 is provided at the bottom of the sealing plate 16. A slide groove 18 is provided on the inner wall of the heat dissipation groove 13. The slider 17 is slidably connected to the inside of the slide groove 18. An installation groove 19 is provided on the inner bottom surface of the explosion-proof housing 1. A fan 110 is fixedly installed inside the installation groove 19. The fan 110 is electrically connected to the battery 4. The positive side of the explosion-proof housing 1 A wiring port 111 is provided at the lower right corner of the surface, and a temperature sensor 2 is provided on the inner wall of the explosion-proof housing 1. The temperature sensor 2 is electrically connected to the external control terminal, and the temperature inside the explosion-proof housing 1 is monitored by the temperature sensor 2. After the battery 4 is used for a long time, the battery 4 will generate heat. When the temperature is too high, the fan 110 will be controlled to turn on, and the electric push rod 15 will be started. The output end of the electric push rod 15 drives the sealing plate 16 to move left and right, thereby connecting the heat dissipation groove 13 with the outside, and then the fan 110 discharges the heat through the heat dissipation groove 13, so that the inside of the explosion-proof housing 1 is at a normal temperature level, thereby avoiding the situation where the temperature is too high and the battery 4 short-circuits, thereby causing an explosion.

[0027] Further, such as Figure 2As shown, a guide rod 3 is fixedly connected to the lower position of the inner wall of the explosion-proof housing 1, and dampers 31 are arranged at both ends of the guide rod 3. Moving blocks 32 are slidably connected to both sides of the surface of the guide rod 3. A connecting block 1 34 is fixedly connected to the top of the moving block 32. The connecting block 1 34 is transmission-connected to a connecting rod 35 through a connecting shaft, and one end of the connecting rod 35 away from the connecting block 1 34 is transmission-connected to a connecting block 2 36 through a connecting shaft. A mounting plate 37 is fixedly connected to the top of the connecting block 2 36. The left and right sides of the mounting plate 37 are fixedly arranged on the inner wall of the explosion-proof housing 1 through a second spring 38. The top of the mounting plate 37 A battery 4 is fixedly arranged on the surface, and the output end of the battery 4 is electrically connected to the external electrical equipment through the wiring port 111. When the external impact force is generated on the explosion-proof housing 1, the battery 4 will move up and down with the mounting plate 37, and then the moving blocks 32 on both sides will move in opposite directions through the connecting block 1 34, the connecting rod 35 and the connecting block 2 36, and then the impact force brought by the outside to the battery 4 will be buffered by the damper 31, the first spring 33 and the second spring 38, so as to ensure that the external impact force will not affect the battery 4 inside the explosion-proof housing 1, thereby avoiding the situation where the battery 4 is damaged and exploded due to the impact force.

[0028] The explosion-proof principle of the utility model is as follows: first, when the outside generates an impact force on the explosion-proof housing 1, the battery 4 will move up and down with the mounting plate 37, and then the moving blocks 32 on both sides will move in opposite directions through the connecting block 1 34, the connecting rod 35 and the connecting block 2 36, and then the impact force brought by the outside to the battery 4 will be buffered by the damper 31, the first spring 33 and the second spring 38, so as to avoid the battery 4 being damaged and exploded due to the impact force; then the temperature inside the explosion-proof housing 1 is monitored by the temperature sensor 2. After the battery 4 is used for a long time, the battery 4 will generate heat. When the temperature is too high, the temperature sensor 2 will control the fan 110 to turn on, and start the electric push rod 15. The electric push rod 15 will turn on the fan 110, and the electric push rod 15 will turn on the fan 110. The output end of the rod 15 drives the sealing plate 16 to move left and right, thereby connecting the heat dissipation groove 13 with the outside, and then the fan 110 discharges the heat through the heat dissipation groove 13, so that the inside of the explosion-proof housing 1 is at a normal temperature level, thereby avoiding the situation where the temperature is too high and the battery 4 short-circuits, thereby causing an explosion; finally, the explosion-proof valve 12 is used to prevent the battery 4 from exploding. The explosion-proof valve 12 has a built-in pressure sensor that can sense the pressure changes inside the explosion-proof housing 1. When the pressure rises to the set safety threshold, the valve will automatically open. Once the valve is opened, it will allow the internal pressure of the explosion-proof housing 1 to be released and the excess gas will be discharged, which can also prevent the battery 4 from exploding due to excessive pressure.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A battery with an explosion-proof structure, characterized in that: The invention comprises an explosion-proof housing (1), the top of which is fixedly connected to an explosion-proof cover (11) by bolts, an explosion-proof valve (12) is arranged at a central position on the upper surface of the explosion-proof cover (11), heat dissipation grooves (13) are arranged at left and right symmetrical positions on the upper surface of the explosion-proof cover (11), a fixing plate (14) is fixedly connected to the left and right sides of the top of the explosion-proof cover (11), two electric push rods (15) are installed on the sides of the two fixing plates (14) away from each other, the output end of the electric push rod (15) passes through the outer wall of the fixing plate (14) and is fixedly connected to a sealing plate (16), a temperature sensor (2) is arranged on the inner wall of the explosion-proof housing (1), and the temperature sensor (2) is electrically connected to an external control terminal, a guide rod (3) is fixedly connected to the lower position of the inner wall of the explosion-proof housing (1), and dampers (31) are arranged at both ends of the guide rod (3).

2. A battery with an explosion-proof structure according to claim 1, characterized in that: A sliding block (17) is provided at the bottom of the sealing plate (16), a sliding groove (18) is provided on the inner side wall of the heat dissipation groove (13), and the sliding block (17) is slidably connected to the inside of the sliding groove (18).

3. The battery with explosion-proof structure according to claim 1, characterized in that: The inner bottom surface of the explosion-proof housing (1) is provided with a mounting groove (19), a fan (110) is fixedly installed inside the mounting groove (19), the fan (110) is electrically connected to the battery (4), and a wiring port (111) is provided at the lower right corner of the front side of the explosion-proof housing (1).

4. The battery with an explosion-proof structure according to claim 1, characterized in that: Both sides of the surface of the guide rod (3) are slidably connected with moving blocks (32), the top of the moving block (32) is fixedly connected with a connecting block (34), and the connecting block (34) is transmission-connected to a connecting rod (35) via a connecting shaft.

5. A battery with an explosion-proof structure according to claim 4, characterized in that: One end of the connecting rod (35) away from the connecting block 1 (34) is transmission-connected to the connecting block 2 (36) via a connecting shaft, and a mounting plate (37) is fixedly connected to the top of the connecting block 2 (36).

6. A battery with an explosion-proof structure according to claim 5, characterized in that: The left and right sides of the mounting plate (37) are fixed to the inner side wall of the explosion-proof housing (1) via second springs (38).

7. A battery with an explosion-proof structure according to claim 6, characterized in that: A battery (4) is fixedly mounted on the upper surface of the mounting plate (37), and an output end of the battery (4) is electrically connected to an external electrical device via a wiring port (111).

Images