Explosion-proof storage battery
By designing explosion-proof valves, pressure relief grooves, breathable membranes and explosion-proof blocks in explosion-proof batteries, the problem that the existing technology cannot completely prevent explosions is solved, rapid pressure relief and pressure balance are achieved, and safety is significantly improved and waterproof and breathable are greatly improved. performance.
Patent Information
- Application Number
- CN202323406659.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-13
AI Technical Summary
Existing explosion-proof batteries cannot be 100% prevented from explosions under special circumstances, which may lead to fires.
An explosion-proof battery is designed, using explosion-proof valves, pressure relief grooves, breathable membranes, explosion-proof blocks and buffer chambers. When the internal pressure rises, gas can be quickly released through the pressure relief grooves and breathable membranes to prevent explosions and pass explosion-proof Block shunt pressure to reduce the explosion potential energy.
It effectively prevents the battery from explosion and combustion, greatly improves the safety of users and facilities, and the waterproof and breathable function avoids explosions caused by pressure accumulation, and balances internal and external pressures under normal conditions.
Smart Images
Figure CN222168616U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of storage batteries, in particular to an explosion-proof storage battery. Background Art
[0002] Battery refers to a general term for all chemical energy batteries that can be recharged and used repeatedly after the power is used to a certain extent. It is also called rechargeable battery. The reason why it can be recharged is that its chemical reaction can be reversed after connecting to an external power source. There are many kinds of chemicals used to make batteries, and their designs are also different; therefore, their voltage, capacity, appearance, size, and weight are also different. Explosion-proof battery is a new type of battery product developed for special fields and special application scenarios. It is made of high safety factor materials and can effectively curb the hazards caused by battery explosions. High safety is its biggest feature. Application areas: special equipment, petrochemical, explosion-proof electrical, mining, ships, etc.
[0003] According to the search, Chinese patent literature, announcement number: CN207183324U, discloses an explosion-proof battery, whose structure includes a battery holder, an upper cover, an explosion-proof controller, an electrode generator, a sealing ring, an anode terminal, a cathode terminal, a water inlet, a closing cover, a handle, a bus bar, a fixing groove, and a fixing valve. The utility model is an explosion-proof battery, which is provided with an explosion-proof controller. The control base is provided with a display screen through a control panel. The control panel is provided with three control buttons of the same size and evenly distributed. Through the explosion-proof controller, it can monitor whether the circuit in the battery is overloaded and short-circuited. If a fault occurs, the explosion-proof controller immediately cuts off the circuit to prevent the battery from exploding. However, the above technology still has shortcomings. Although the above existing technology can cut off the circuit in time to prevent explosion, it cannot guarantee the possibility of eliminating the explosion 100%. Once a special situation occurs, the protection system goes wrong, which will cause an explosion, or even a fire. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the utility model provides an explosion-proof battery, which has the advantages of waterproof and breathable, that is, before the gas reaches the explosion limit, the explosion-proof valve can instantly release pressure to release internal pressure and avoid battery pack explosion, thereby solving the above technical problems.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof battery, comprising a battery case, an explosion-proof valve is fixedly connected to the outer surface of the battery case, a pressure relief groove is provided on the outer surface of the explosion-proof valve, a ejector is fixedly installed inside the explosion-proof valve, a membrane block is installed inside the valve body, a breathable membrane is fixedly installed on the membrane block, a pressure channel is provided in the battery case, an explosion-proof block is fixedly arranged in the pressure channel, an explosion-proof waterproof breathable valve is penetrated and connected to the outer surface of the battery case, a buffer cavity is provided in the explosion-proof waterproof breathable valve, and a buffer block is installed and connected in the buffer cavity.
[0008] Preferably, the explosion-proof valve is fixedly mounted on a valve body, and the valve body and the battery box are an integrated structure.
[0009] Through the above technical scheme, the device is used to prevent the explosion or combustion of the battery during overcharge or overdischarge, thereby preventing unnecessary harm to users or surrounding facilities. The valve body is made of steel material with strong texture, good explosion-proof effect, waterproof and flame retardant, and air is not easy to enter. Even if combustion occurs in the battery cavity, it cannot continue.
[0010] Preferably, the pressure relief groove penetrates the inner space of the valve body to form a pressure relief cavity, and the air permeable membrane is located in the space of the pressure relief cavity.
[0011] Through the above technical solution, once thermal runaway occurs in the battery cavity, the air pressure in the battery cavity rises sharply. At this time, the battery is in danger of explosion. The huge pressure generated inside will be released through the pressure relief chamber and the pressure relief groove, which can release the pressure in time, so that the pressure inside and outside the box will instantly reach a balanced state, thereby preventing the occurrence of explosion.
[0012] Preferably, the membrane block is fixedly connected to the valve body, and a breathable membrane is fixedly mounted on one end of the membrane block away from the valve body, and the central position of the breathable membrane faces the tip of the ejector pin.
[0013] Through the above technical solution, this device is designed and installed with a ejector pin inside the explosion-proof valve. When the pressure in the battery cavity is much greater than the ambient pressure or the internal gas pressure reaches the bursting pressure of the explosion-proof valve, the breathable membrane will deform and arch outward under the action of the gas pressure in the battery cavity. After the breathable membrane hits the ejector pin, the ejector pin will pierce the breathable membrane, thereby allowing the battery cavity to directly connect to the outside world, achieving the effect of rapid pressure relief by discharging gas outward.
[0014] Preferably, an even number of explosion-proof blocks are provided in the pressure channel, both ends of the explosion-proof blocks are fixedly connected to the surface of the pressure channel, and one end of the explosion-proof block is flush with the connection between the bottom end of the membrane block and the battery box.
[0015] Through the above technical solution, the role of the explosion-proof blocks in the pressure channel is to prevent the pressure generated by the internal explosion from pouring out to one end unimpeded, acting as a "dam" in flood control facilities, so that the huge internal pressure is greatly weakened and guided by several explosion-proof blocks to be diverted into small airflows, reducing the potential energy generated by the explosion. In this way, even if an explosion occurs, it will not cause serious harm to the surrounding area.
[0016] Preferably, the interior of the battery box is configured as a battery inner cavity, an annular buffer groove is provided on the explosion-proof waterproof breathable valve, a rubber buffer ring adapted to the buffer groove is installed in the buffer groove, a threaded screw is fixedly connected to the explosion-proof waterproof breathable valve, and the buffer cavity is arranged on the outer surface of the threaded screw.
[0017] Through the above technical scheme, the explosion-proof, waterproof and breathable valve has the functions of being waterproof, dustproof and breathable, and can avoid explosions caused by pressure. A large amount of chemical substances are installed in the battery, and a large amount of mixed gas and liquid will be generated during the charging and discharging process, accompanied by the continuous accumulation of pressure. If these pressures are not balanced or released in time, the shell will deform and leak at the least, and explosion will occur at the most serious level. The explosion-proof, waterproof and breathable valve can also quickly ventilate, relieve pressure and prevent explosion, thus solving the problem of battery self-explosion. At the same time, under normal conditions, it plays an important role in balancing internal and external pressures.
[0018] Compared with the prior art, the utility model provides an explosion-proof battery, which has the following beneficial effects:
[0019] 1. Once thermal runaway occurs in the inner cavity of the battery, the gas pressure in the inner cavity of the battery rises sharply. At this time, the battery is in danger of exploding. The huge pressure generated inside will be released through the pressure relief cavity and the pressure relief groove, which can release the pressure in time, so that the pressure inside and outside the box can reach a balanced state instantly, preventing the explosion from happening. The role of the buffer block in the pressure channel is to prevent the pressure generated by the internal explosion from tilting to one end without hindrance, acting as a "dam" in flood control facilities, so that the huge internal pressure is greatly weakened and diverted into small airflows by several explosion-proof blocks, reducing the potential energy generated by the explosion. In this way, even if an explosion occurs, it will not cause serious harm to the surrounding area.
[0020] 2. The utility model is designed to install a ejector pin inside the explosion-proof valve. When the pressure in the battery cavity is much greater than the ambient pressure or the internal gas pressure reaches the bursting pressure of the explosion-proof valve, the breathable membrane will be deformed and arched outward under the action of the gas pressure in the battery cavity. After the breathable membrane hits the ejector pin, the ejector pin will pierce the breathable membrane, thereby allowing the battery cavity to be directly connected to the outside world, achieving the effect of rapid pressure relief by discharging gas outward. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1It is a three-dimensional schematic diagram of the structure of the utility model;
[0022] Figure 2 It is a schematic cross-sectional view of the internal structure of the utility model;
[0023] Figure 3 It is a partially enlarged schematic diagram of the explosion-proof and waterproof breathable valve of the utility model.
[0024] Among them: 1. Battery case; 2. Valve body; 3. Explosion-proof valve; 31. Pressure relief groove; 32. Ejector pin; 33. Pressure relief chamber; 4. Explosion-proof waterproof breathable valve; 41. Buffer groove; 42. Rubber buffer ring; 43. Threaded screw; 5. Buffer chamber; 6. Buffer block; 7. Membrane block; 76. Breathable membrane; 8. Pressure channel; 88. Explosion-proof block; 9. Battery inner cavity. DETAILED DESCRIPTION
[0025] 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.
[0026] See also Figure 1-3 A explosion-proof battery comprises a battery case 1, an explosion-proof valve 3 is fixedly connected to the outer surface of the battery case 1, a pressure relief groove 31 is provided on the outer surface of the explosion-proof valve 3, a ejector pin 32 is fixedly installed inside the explosion-proof valve 3, a membrane block 7 is installed on the inner side of the valve body 2, a breathable membrane 76 is fixedly installed on the membrane block 7, a pressure channel 8 is provided in the battery case 1, an explosion-proof block 88 is fixedly provided in the pressure channel 8, an explosion-proof waterproof breathable valve 4 is penetrated and connected to the outer surface of the battery case 1, the explosion-proof waterproof breathable valve 4 has a buffer cavity 5 provided in the explosion-proof waterproof breathable valve 4, and a buffer block 6 is installed and connected in the buffer cavity 5.
[0027] Specifically, the explosion-proof valve 3 is fixedly mounted on the valve body 2, and the valve body 2 is an integrated structure with the battery box 1. The advantage is that the device is used to prevent the explosion or combustion of the battery during overcharge or overdischarge of the battery to cause unnecessary harm to the user or surrounding facilities. The valve body 2 is made of steel material, which has a strong texture, good explosion-proof effect, waterproof and flame retardant, and air is not easy to enter. Even if the battery cavity 9 burns, it cannot continue.
[0028] Specifically, the pressure relief groove 31 penetrates the inner space of the valve body 2 to form a pressure relief chamber 33, and the air permeable membrane 76 is located in the space of the pressure relief chamber 33. The advantage is that once the battery inner chamber 9 has thermal runaway, the gas pressure in the battery inner chamber 9 rises sharply, and the battery is in danger of exploding. The huge pressure generated inside will pass through the pressure relief chamber 33 and be released by the pressure relief groove 31, so that the pressure can be released in time, so that the pressure inside and outside the box can reach a balanced state instantly, thereby preventing the explosion from occurring.
[0029] Specifically, the membrane block 7 is fixedly connected to the valve body 2, and a breathable membrane 76 is fixedly installed at one end of the membrane block 7 away from the valve body 2, and the central position of the breathable membrane 76 is directly opposite to the tip of the ejector pin 32. The advantage is that the device is designed and installed with an ejector pin 32 inside the explosion-proof valve 3, and when the pressure of the battery cavity 9 is much greater than the ambient pressure or the internal gas pressure reaches the bursting pressure of the explosion-proof valve 3, the breathable membrane 76 will be deformed and arched outwards under the action of the gas pressure in the battery cavity 9, and when the breathable membrane 76 hits the ejector pin 32, the ejector pin 32 will pierce the breathable membrane 76, so that the battery cavity 9 is directly connected to the outside, and the gas is discharged outwards to quickly release the pressure.
[0030] Specifically, an even number of explosion-proof blocks 88 are arranged in the pressure channel 8, and both ends of the explosion-proof blocks 88 are fixedly connected to the surface of the pressure channel 8, and one end of the explosion-proof block 88 is flush with the connection between the bottom end of the membrane block 7 and the battery box 1. The advantage is that the explosion-proof block 88 in the pressure channel 8 prevents the pressure generated by the internal explosion from being unimpededly tilted to one end, acting as a "dam" in the flood control facilities, so that the huge internal pressure is greatly weakened and diverted into small airflows by several explosion-proof blocks 88, reducing the potential energy generated by the explosion. In this way, even if an explosion occurs, it will not cause serious harm to the surrounding area.
[0031] Specifically, the interior of the battery box 1 is set as a battery inner cavity 9, and an annular buffer groove 41 is provided on the explosion-proof waterproof breathable valve 4, and a rubber buffer ring 42 adapted to the buffer groove 41 is installed in the buffer groove 41, and a threaded screw 43 is fixedly connected to the explosion-proof waterproof breathable valve 4, and the buffer cavity 5 is set on the outer surface of the threaded screw 43. The advantage is that the explosion-proof waterproof breathable valve 4 has the functions of waterproof, dustproof and breathable, and can avoid explosions caused by pressure. A large amount of chemical substances are installed in the battery, and a large amount of mixed gas and liquid will be generated during the charging and discharging process, accompanied by the continuous accumulation of pressure. If these pressures are not balanced or released in time, the shell will be deformed and leaked at a lighter level, and an explosion will occur at a more serious level. The explosion-proof waterproof breathable valve 4 can also quickly ventilate and release pressure, and is explosion-proof, solving the problem of battery self-explosion. At the same time, under normal conditions, it plays an important role in balancing internal and external pressures.
[0032] When in use, the device is designed to install a ejector pin 32 inside the explosion-proof valve 3. When the pressure of the battery cavity 9 is much greater than the ambient pressure or the internal gas pressure reaches the bursting pressure of the explosion-proof valve 3, the breathable membrane 76 will be deformed and arched outward under the action of the gas pressure in the battery cavity 9. After the breathable membrane 76 hits the ejector pin 32, the ejector pin 32 will pierce the breathable membrane 76, so that the battery cavity 9 is directly connected to the outside world, achieving the effect of rapid pressure relief by gas discharge. The role of the explosion-proof block 88 in the pressure channel 8 is The pressure generated by the internal explosion is prevented from pouring out to one end without hindrance, acting as a "dam" in flood control facilities, so that the huge internal pressure is greatly weakened and diverted into small airflows by several explosion-proof blocks 88, thereby reducing the potential energy generated by the explosion. The explosion-proof waterproof breathable valve 4 has the functions of waterproof, dustproof and breathable, which can avoid explosions caused by pressure. The explosion-proof waterproof breathable valve 4 can also quickly ventilate, relieve pressure and prevent explosion, thereby solving the problem of battery self-explosion. At the same time, under normal conditions, it plays an important role in balancing internal and external pressures.
[0033] 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. An explosion-proof battery, comprising a battery box (1), characterized in that: The outer surface of the battery case (1) is fixedly connected to an explosion-proof valve (3), the outer surface of the explosion-proof valve (3) is provided with a pressure relief groove (31), a thimble (32) is fixedly installed inside the explosion-proof valve (3), one side of the battery case (1) is fixedly connected to a valve body (2), a membrane block (7) is installed inside the valve body (2), a breathable membrane (76) is fixedly installed on the membrane block (7), a pressure channel (8) is opened inside the battery case (1), an explosion-proof block (88) is fixedly installed inside the pressure channel (8), an explosion-proof waterproof breathable valve (4) is penetrated and connected to the outer surface of the battery case (1), a buffer cavity (5) is opened inside the explosion-proof waterproof breathable valve (4), a buffer block (6) is installed and connected inside the buffer cavity (5).
2. An explosion-proof battery according to claim 1, characterized in that: The explosion-proof valve (3) is fixedly mounted on the valve body (2), and the valve body (2) and the battery box (1) are an integrated structure.
3. An explosion-proof battery according to claim 1, characterized in that: The pressure relief groove (31) penetrates the inner space of the valve body (2) to form a pressure relief chamber (33), and the air permeable membrane (76) is located in the space of the pressure relief chamber (33).
4. An explosion-proof battery according to claim 1, characterized in that: The membrane block (7) is fixedly connected to the valve body (2); a breathable membrane (76) is fixedly mounted on one end of the membrane block (7) away from the valve body (2); the central position of the breathable membrane (76) faces the tip of the ejector pin (32).
5. An explosion-proof battery according to claim 1, characterized in that: An even number of explosion-proof blocks (88) are arranged in the pressure channel (8), both ends of the explosion-proof blocks (88) are fixedly connected to the surface of the pressure channel (8), and one end of the explosion-proof block (88) is flush with the connection between the bottom end of the membrane block (7) and the battery box (1).
6. An explosion-proof battery according to claim 1, characterized in that: The interior of the battery box (1) is arranged as a battery inner cavity (9); the explosion-proof waterproof breathable valve (4) is provided with an annular buffer groove (41); a rubber buffer ring (42) adapted to the buffer groove (41) is installed in the buffer groove (41); a threaded screw rod (43) is fixedly connected to the explosion-proof waterproof breathable valve (4); and the buffer cavity (5) is arranged on the outer surface of the threaded screw rod (43).