CN203800094U - Storage battery with fire prevention function - Google Patents

Abstract

The utility model belongs to the battery field and particularly relates to a storage battery with a fire prevention function. The storage battery comprises a sealing shell and a battery body arranged in the sealing shell. A fire-proof material filling cavity is arranged between the sealing shell and the battery body. A fire-proof board is fixedly arranged on the inner surface of the sealing shell. The fire-proof material filling cavity is arranged between the fire-proof board and the battery body. The fire-proof material filling cavity is filled with dry powder extinguishing agents. According to the storage battery with the fire prevention function, outside oxygen is isolated by the sealing shell, the fireproof board can isolate heat and control fire, and the dry powder extinguishing agents can be directly used for extinguishment, so that a fire source is controlled from all aspects, and the safety of the battery in use is ensured; moreover, the internal fire of the battery can be controlled, and the storage battery can also prevent external fire from invading once the battery body is ignited externally and exploded and the dangerous situation is aggravated; in this way, it is ensured that the external dangerous situation does not continue deteriorating under the effect of the battery, and it can also be guaranteed that the battery body is not damaged.

Description

A storage battery with fireproof function

technical field

The utility model belongs to the field of batteries, in particular to a storage battery with a fireproof function.

Background technique

With the deepening of the global energy crisis and the awareness of energy conservation and environmental protection being deeply rooted in the hearts of the people, batteries as an energy-saving and Due to its own characteristics, there are many unsafe factors, such as short-circuit fire, explosion, etc. The existing batteries on the market do not have the function of self-fire prevention and fire extinguishing. The existing solution is to equip the battery with traditional bottled fire extinguishing equipment. , such as the application publication number CN 102500078 A discloses a battery pack fire-proof and explosion-proof device and its fire-proof and explosion-proof method, including a storage container, a valve and a delivery pipe; the valve is arranged at the opening of the storage container, and the delivery pipe communicates with the valve. The invention connects with the BMS system and is controlled by it to open the valve so as to send the fire extinguishing material in for fire extinguishing. However, the device is not only complex in structure, but also controlled by an external intelligent system to extinguish the fire, and there are many variable factors that may cause the valve to fail to open. Explosion, etc., the time lag and the more parts that transmit information, the greater the danger. Its practicability is poor, and it cannot achieve the expected fire extinguishing effect at all, so it has not been popularized in the existing market so far.

Contents of the invention

The object of the present invention is to provide a storage battery with a fireproof function to solve the above problems.

Above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A storage battery with a fireproof function comprises a sealed casing and a battery body arranged in the sealed casing, and a fireproof material filling cavity is arranged between the sealed casing and the battery body.

A battery generally includes a battery shell and a battery core, namely the battery body, and is used in a battery control system such as a BMS system. The present invention directly sleeves a sealed shell with a fireproof function outside the battery body and then puts it into the battery shell, which can greatly improve the safety of the battery. .

The present invention directly fills the fireproof material in the fireproof material filling cavity outside the battery body, makes the fireproof material directly face the fire source, without any other auxiliary equipment, and directly and effectively extinguishes the fire. The sealed casing can also effectively prevent the entry of external oxygen, increasing the safety of the battery.

Preferably, a fireproof board is fixed on the inner surface of the sealed casing, and the fireproof material filling cavity is arranged between the fireproof board and the battery body.

In the sealed shell, the fireproof board can control the spread of fire.

Preferably, the fireproof material filling cavity is filled with dry powder fire extinguishing agent.

Preferably, the fireproof material filling cavity is filled with a dry powder fire extinguishing agent, and the dry powder fire extinguishing agent is sodium bicarbonate, sodium chloride or potassium chloride dry powder fire extinguishing agent.

The direct color of the invention is filled with dry powder fire extinguishing agent, which does not affect the performance of the battery and is safer to use.

Preferably, the dry powder fire extinguishing agent is sodium bicarbonate dry powder fire extinguishing agent, and the battery body is a lithium battery body.

The batteries commonly used in the existing market include lead-acid batteries and lithium batteries. Although lead-acid batteries are more stable than lithium batteries, lead-acid batteries have been gradually replaced by lithium batteries due to their serious environmental pollution. Lithium batteries are widely used in civilian applications. The application is becoming more and more widespread, especially in the field of new energy vehicles that are constantly being launched. Due to the flammability and danger of electrolytic lithium, new energy vehicles on the existing market still only use lead-acid batteries. In view of the above problems, the applicant applied the structure of the present invention designed through careful research and multiple tests to the field of lithium batteries for testing. The lithium battery was directly wrapped in a dry powder fire extinguishing agent, and the dry powder fire extinguishing agent was mainly used for extinguishing Class B fire extinguishing agents. Sodium bicarbonate for fire, sodium bicarbonate will decompose to produce carbon dioxide and water when it reaches a certain temperature. Oxygen combines with spontaneous combustion to cause a fire, and the outer shell is sealed to increase safety. After repeated tests, it has also been confirmed that sodium bicarbonate has the best effect on lithium battery fire extinguishing, and high-purity sodium bicarbonate has a particularly obvious and effective effect on lithium battery fire extinguishing. The sodium bicarbonate fire extinguishing agent combined with the fireproof board and the sealed casing can achieve the dual effects of fire extinguishing and fire control. The safety of lithium batteries is greatly improved, and it can be safely applied to various fields.

As a preference, a thermally conductive separator fixedly connected to the fireproof board is provided between the fireproof filling cavity and the battery body, and the thermally conductive separator forms a battery inner positioning shell, and the battery body is put into the battery inner positioning shell and the surface of the thermally conductive separator facing the battery body is in close contact with the surface of the battery body.

The setting of the thermally conductive separator enables the battery body to be positioned in the sealed case. At the same time, all surfaces of the battery body are covered with dry powder fire extinguishing agent to ensure uniform distribution. The thermally conductive separator can quickly conduct the heat of the battery body to the The dry powder fire extinguishing agent ensures the sensitivity of the equipment to extinguish the fire. The above advantages can effectively guarantee the fire performance of lithium batteries. Moreover, the heat-conducting partition and the shell form an integral body, and the battery body can be directly placed in the heat-conducting partition, which is convenient for disassembly and assembly as a whole, and is convenient for maintenance and replacement of parts.

Preferably, the sealed enclosure is a fireproof enclosure made of fireproof boards. According to the different battery models and the different materials of the fireproof board, the structure can be arranged reasonably under the premise of energy saving. If the overall structure is small, the directly sealed fireproof board can be used as the sealed shell to achieve the effect of sealing and fire prevention .

As a preference, the sealed casing includes a lower casing and an upper casing cover that are sealed butted together, the lower casing and the upper casing cover are provided with a fireproof material filling cavity, and the upper casing cover is provided with a connecting hole between the upper and lower sides of the casing cover. The wire tube on the side, the wire connected to the battery body is arranged in the wire tube.

Preferably, a sealing ring is provided on the top of the lower housing, a sealing ring or fireproof mud is provided on the upper port and/or lower port of the line pipe, and an exhaust valve is also provided on the upper housing cover , the exhaust valve is provided with a smoke filter.

The above-mentioned structure is not only convenient for installation, but also can ensure the sealing of the shell when the battery is in normal use, ensuring the safety of the battery. When a fire occurs, the dry powder fire extinguishing agent will work, and the exhaust valve will be opened at the same time, and the fire extinguishing gas will discharge the oxygen upward from the shell. Inside, the smoke filter can effectively prevent the harmful dust inside from being discharged into the air, which further ensures safety and is more environmentally friendly. At the same time, it can decompress the inside to prevent explosion.

Preferably, the fireproof board is perlite board, fireproof gypsum board, glass wool board, calcium silicate fiberboard or magnesium oxychloride fireproof board.

During production, a layer of fireproof board can be coated outside the sealed casing, which can not only better control the internal fire of the battery body, but also better isolate the intrusion of external fire.

To sum up, the utility model has the following beneficial effects: the battery body is directly wrapped in the fireproof material.

1. The sealed casing of the present invention isolates the entry of external oxygen, the fireproof board can insulate heat and control the fire, and the dry powder fire extinguishing agent can directly extinguish the fire, thereby controlling the fire source from all sides, ensuring the safety of the battery, and not only inside the battery The fire is controllable. Once the battery body is ignited by the outside world, it will explode and aggravate the danger. The invention can also prevent the intrusion of external fire, ensuring that the outside danger will not continue to deteriorate under the action of the battery, and at the same time ensure that the battery body will not be damaged.

2. The present invention has the advantages of simple structure, low cost, and convenient disassembly and assembly. The fire extinguishing material is directly coated on the battery body, which has high safety and direct and effective fire extinguishing.

3. The present invention is applicable to various types of storage batteries, which have high safety and are suitable for various fields.

4. The equipment of the present invention has changed the traditional concept of spraying out fire extinguishing material under pressure to put out the fire. The fire extinguishing material directly hits the fire source, the fire is quickly extinguished, the fire extinguishing effect is good, and it can also effectively prevent fire.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1;

Fig. 2 is the structural representation of embodiment two;

Fig. 3 is a structural schematic diagram with a shell and a heat-conducting partition;

Fig. 4 is the schematic diagram of embodiment six degree structure;

Fig. 5 is a structural schematic diagram of setting fireproof boards inside and outside the shell;

Fig. 6 is a schematic diagram of the overall structure of the present invention;

Fig. 7 is a schematic structural diagram of the fourth embodiment.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Embodiment one:

A storage battery with a fireproof function comprises a sealed casing 1 and a battery body 2 arranged in the sealed casing, and a fireproof material filling cavity 4 is arranged between the sealed casing 1 and the battery body 2 . A fireproof board 3 is fixed on the inner surface of the sealed casing 1 , and the fireproof material filling cavity 4 is arranged between the fireproof board 3 and the battery body 2 .

The fireproof material filling cavity 4 is filled with dry powder fire extinguishing agent. The dry powder fire extinguishing agent is sodium bicarbonate, sodium chloride or potassium chloride dry powder fire extinguishing agent. The sealed casing 1 includes a lower casing 11 and an upper casing cover 12 which are sealed butted, and the lower casing 11 and the upper casing cover 12 are provided with a fireproof material filling chamber 4, and the upper casing cover 12 is provided with a communicating The wire tubes 13 on the upper and lower sides of the case cover 12 are provided with wires connected to the battery body 2 inside the wire tubes 13 .

The top of the lower housing 11 is provided with a sealing ring 14, the upper port and/or the lower port of the line pipe 13 is provided with a sealing ring or fire-proof mud, and the upper housing cover 12 is also provided with an exhaust port. A valve 121, the exhaust valve 121 is provided with a smoke filter. The fireproof board is perlite board, fireproof gypsum board, glass wool board, calcium silicate fiberboard or magnesium oxychloride fireproof board.

Embodiment two:

Between the fireproof filling chamber 4 and the battery body 2, there is a heat conduction separator 5 fixedly connected to the fireproof board 3, and the heat conduction separator 5 forms a positioning shell inside the battery, and the battery body is put into the battery The surface of the positioning shell and the surface of the thermally conductive separator 5 facing the battery body 2 is in contact with the surface of the battery body 2 . Metal plates can be used for the thermally conductive separator, which not only ensures thermal conductivity but also increases battery strength.

Embodiment three:

The difference from the above embodiments is that the dry powder fire extinguishing agent is sodium bicarbonate dry powder fire extinguishing agent, and the battery body 2 is a lithium battery body.

Embodiment four:

The difference from the above-mentioned embodiments is that the battery structure includes a sealed casing, a fireproof material filling cavity 4, and a battery body directly in contact with the filling cavity. A bracket can be provided in the sealed casing to directly position the battery body to ensure that the surrounding area of the battery body is Directly coated with dry powder fire extinguishing agent. Suitable for small disposable batteries.

Embodiment five:

The difference from the above embodiments is that the battery structure includes a sealed casing, a fireproof material filling cavity 4, and a battery body directly in contact with the filling cavity, and the sealed casing 1 is a fireproof casing made of a fireproof board. In addition, a battery body positioning bracket or a heat-conducting separator can be arranged in the sealed casing to position the battery body.

Embodiment six:

The difference from the above-mentioned embodiments is that there is a fire-proof layer formed by a fire-proof board attached to the shell outside the sealed shell, which can more effectively prevent the spread of internal and external fires and ensure the safety of the battery.

The sealed casing of the present invention isolates the entry of external oxygen, the fireproof board can insulate heat and control the fire, and the dry powder fire extinguishing agent can directly extinguish the fire, thereby controlling the fire source from all sides, ensuring the safety of the battery, and not only the internal fire of the battery can be Control, once the battery body is ignited by the outside, it will also explode, aggravating the danger. The invention can also prevent the intrusion of external fire, ensure that the external danger will not continue to deteriorate under the action of the battery, and at the same time ensure that the battery body will not be damaged. The storage battery of the invention has high safety and is suitable for various fields.

Claims (9)

1. a storage battery with fire-proof function, it is characterized in that: comprise can (1) and be arranged at the battery body (2) in can, between described can (1) and battery body (2), be provided with fire proofing material and fill chamber (4), described fire proofing material is filled in chamber (4) and is filled with powder extinguishing agent.

2. a kind of storage battery with fire-proof function according to claim 1, it is characterized in that: on described can (1) inner surface, be installed with PLASTIC LAMINATED (3), described fire proofing material is filled chamber (4) and is arranged between described PLASTIC LAMINATED (3) and battery body (2).

3. a kind of storage battery with fire-proof function according to claim 2, is characterized in that: described fire proofing material is filled in chamber (4) and is filled with powder extinguishing agent, and described powder extinguishing agent is sodium acid carbonate, sodium chloride or potassium chloride fire-extinguishing agent.

4. a kind of storage battery with fire-proof function according to claim 3, is characterized in that: described powder extinguishing agent is preventing sodium bicarbonate dry-chemical fire extinguishing agent agent, and described battery body (2) is lithium battery body.

5. according to a kind of storage battery with fire-proof function described in the arbitrary claim of claim 1-4, it is characterized in that: described fire prevention is filled between chamber (4) and battery body (2) and is provided with the heat conduction baffle (5) being fixed on PLASTIC LAMINATED (3), described heat conduction baffle (5) forms location shell in a battery, and described battery body is put into described battery location shell and described heat conduction baffle (5) is affixed towards surface and battery body (2) surface of battery body (2).

6. a kind of storage battery with fire-proof function according to claim 1, is characterized in that: the flameproof case of described can (1) for being made by PLASTIC LAMINATED.

7. a kind of storage battery with fire-proof function according to claim 5, it is characterized in that: described can (1) comprises lower house (11) and the upper shell cover (12) of sealing docking, on described lower house (11) and upper shell cover (12), be all provided with fire proofing material and fill chamber (4), on described upper shell cover (12), be provided with the spool (13) that is communicated with the upper and lower both sides of cap (12), the electric wire that is connected in battery body (2) is set in described spool (13).

8. a kind of storage battery with fire-proof function according to claim 7, it is characterized in that: described lower house (11) top is provided with sealing ring (14), the upper port of described spool (13) and/or lower port are provided with sealing and are provided with sealing ring or anti-chamotte, on described upper shell cover (12), be also provided with vent valve (121), described vent valve is provided with smoke filter in (121).

9. a kind of storage battery with fire-proof function according to claim 8, is characterized in that: described PLASTIC LAMINATED is pearlite slab, fire-resistant gypsum panel, block of glass wool, ca silicate fibre plate or chlorine oxygen magnesium PLASTIC LAMINATED.