CN117039313A - Flame-retardant new energy battery box - Google Patents

Abstract

The invention discloses a flame-retardant new energy battery box, which relates to the technical field of battery boxes. It includes a box body and several battery storage modules arranged in an array in the box body. The box body is provided with a heat dissipation hole structure; the battery storage module The module includes: a flame-retardant box, inside which is formed a first storage chamber containing fire extinguishing fluid; and a battery storage box. Several square heat-insulating frames of the present invention can form equidistant gaps between adjacent square-shaped heat insulating frames under normal conditions, driven by linkage components, and the airflow flowing inside the box can enter the battery from multiple equidistant gaps. During storage, all parts of the battery are evenly dissipated. When the battery is burned, several square heat-insulating frames can move synchronously driven by the linkage component, which can quickly change the equidistant gap formed by adjacent square heat-insulating frames into O, to quickly isolate the burning battery and spray fire extinguishing fluid into the battery storage room to extinguish the flames.

Description

A flame-retardant new energy battery box

Technical field

The invention relates to the technical field of battery boxes, specifically a flame-retardant new energy battery box.

Background technique

In today's era, technological changes in new energy vehicles have become the inevitable direction for the development of the automobile industry. However, research has found that the core technology of my country's new energy vehicles still needs to be improved. Power batteries are the most important components of new energy vehicles and the key to the development of the entire industry. Taking the initiative in power batteries means controlling the future of electric vehicles in this country.

During the use of power batteries, especially when discharged at high rates, the battery will generate a large amount of heat. The traditional liquid cooling system cannot efficiently dissipate this heat in a timely manner, which reduces the battery's capacity retention rate and greatly weakens the battery's performance. In severe cases, thermal runaway may occur, causing the battery to overheat, catch fire, or explode. In addition, when the battery is subject to external collisions and strong impacts, it will cause the battery to short-circuit and explode, seriously affecting personal safety.

Contents of the invention

The purpose of the present invention is to provide a flame-retardant new energy battery box to solve the problems raised in the above background technology.

In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

The invention provides a flame-retardant new energy battery box, which is characterized in that it includes a box body and several battery storage modules arranged in an array in the box body, and the box body is provided with a heat dissipation hole structure;

The battery storage module includes:

A flame-retardant box, the interior of which forms a first storage chamber containing fire-extinguishing fluid;

The battery storage box includes limit plates that are symmetrically and vertically fixed at both ends of the top of the heat dissipation and flame-retardant box, several square heat-insulating frames that are vertically slid and assembled between the two limit plates, and several square heat-insulating frames connected to each other. The linkage assembly on the heat-insulating frame. The insides of several square heat-insulating frames are surrounded by battery storage rooms. Positioning pieces are evenly arranged on the insides of several square heat-insulating frames. The square heat-insulating frame located at the top The top of the battery is hinged with a cover, and the bottom of the cover is equipped with an elastic shrinkage member. The elastic shrinkage member can resist the top of the battery and be compressed. Fixed connection, the linkage component is used to drive the other square heat insulation frames except the bottom square heat insulation frame to slide vertically between the two limit plates, so that the adjacent square heat insulation frames form an equal distance gap;

A fire extinguishing assembly, which includes nozzles arranged vertically inside several square heat-insulating frames, and a liquid injection part arranged in the first storage room and connected to the input end of the nozzle, and the liquid injection part is used for the first storage Indoor fire extinguishing fluid is injected into the nozzle, and nozzle holes are evenly arranged on the outside of the nozzle;

A temperature control component includes a temperature sensor arranged in the storage chamber.

Further, the fire extinguishing agent is perfluorohexanone.

Further, the linkage assembly includes scissor-type telescopic frames that are symmetrically and vertically arranged on both sides of several square heat-insulating frames. The hinge axes of each middle hinge node in the length direction of the scissor-type telescopic frames are respectively connected with several square partitions. The thermal frame is fixedly connected, and a linear drive for driving the telescopic scissor-type telescopic frame is arranged in one of the diamond grids.

Further, the heat dissipation hole structure includes an air inlet and an air outlet respectively symmetrically arranged at both ends of the box; an inlet fan and an outlet fan are respectively provided at the air inlet and the air outlet.

Further, a second storage chamber containing cooling liquid is formed in the flame-retardant box above the first storage chamber. The square heat-insulating frame has a hollow inside with a frame-shaped liquid cooling channel, and the positioning piece is Heat dissipation fins, and one end of the heat dissipation fins extends into the liquid cooling channel, and connecting pipes are provided in the middle of both ends of the square heat insulation frame;

Except for the lowermost square heat insulating frame and the uppermost square heat insulating frame, among the two connecting pipes of the other square heat insulating frames, one of the connecting pipes and the connecting pipe of the square heat insulating frame below pass through the hose connection, another connecting pipe is connected to the square heat-insulating frame above it through a hose;

One of the two connecting pipes of the lowermost square heat insulating frame is connected to the liquid pump installed in the second storage room through a pipeline, and the other connecting pipe is connected to the connecting pipe of the square heat insulating frame above it through a soft pipe. pipe connection;

One of the two connecting pipes of the uppermost square heat insulating frame is connected to the coolant storage chamber through a telescopic pipe, and the other connecting pipe is connected to the connecting pipe of the square heat insulating frame below it through a hose.

Furthermore, the positioning piece has an included angle with the top surface of the square heat-insulating frame.

Further, the cover is also provided with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve.

Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

Under normal conditions, several square heat insulating frames of the present invention can form equidistant gaps between adjacent square heat insulating frames under the drive of the linkage components, and the airflow flowing inside the box can enter from multiple equidistant gaps. During battery storage, all parts of the battery are evenly dissipated. When the battery is burned, several square heat-insulating frames can move synchronously driven by the linkage components, which can quickly change the equidistant gaps between adjacent square heat-insulating frames. is O to quickly isolate the burning battery and spray fire extinguishing fluid into the battery storage room to extinguish the flames.

It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention.

Description of the drawings

The description and drawings that constitute a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

Figure 1 is a schematic structural diagram of the present invention from a first perspective;

Figure 2 is a schematic structural diagram of the present invention from a second perspective;

Figure 3 is a schematic structural diagram of the battery storage module of the present invention from a first perspective;

Figure 4 is a schematic top view of the structural battery storage module of the present invention;

Figure 5 is a schematic diagram of the B-B direction structure of Figure 4;

Figure 6 is a schematic structural diagram of the battery storage module of the present invention from a second perspective;

Figure 7 is a schematic front structural view of the battery storage module of the present invention;

Figure 8 is a schematic diagram of the C-C structure in Figure 7;

Figure 9 is a schematic structural diagram of the linkage component of the present invention.

In the picture:

1. Cabinet; 2. Battery storage module; 21. Flame retardant box; 211. First storage room; 212. Second storage room; 22. Battery storage box; 221. Limiting plate; 222. Square heat insulation frame ; 2221. Liquid cooling channel; 2222. Connecting pipe; 223. Linkage component; 2231. Middle hinged node; 2232. Diamond grid; 225. Positioning piece; 226. Cover body; 2261. Pressure relief pipe; 2262. Pressure relief valve; 2263. Elastic shrinkage parts; 23. Fire extinguishing components; 231. Nozzle; 232. Liquid injection parts; 24. Temperature control components;

31. Air inlet; 32. Air outlet; 4. Liquid pump.

Detailed ways

In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of this application.

Please refer to Figures 1 to 9. The present invention provides a flame-retardant new energy battery box, which includes a box 1 and a plurality of battery storage modules 2 arranged in an array in the box 1. The box 1 is provided with a heat dissipation device. Pore structure. During use, the battery can be stored in the battery storage module 2 in the box 1, and the heat dissipation hole structure on the box 1 connects the box 1 to the outside world, and the heat in the box 1 can be conducted outward through the heat dissipation hole structure.

Further, the heat dissipation hole structure includes an air inlet 31 and an air outlet 32 respectively symmetrically arranged at both ends of the box 1; an inlet fan and an outlet fan are respectively provided at the air inlet 31 and the air outlet 32. The inlet fan and the outlet fan can force a flowing airflow to be formed in the box 1 to dissipate heat to the battery, thereby improving the heat dissipation effect.

The battery storage module 2 serves as a mechanism for storing batteries, and includes a flame retardant box 21, a battery storage box 22, a fire extinguishing component 23 and a temperature control component 24. They can timely remove the burning battery from the box when preventing the battery from burning. Isolate other batteries in body 1 and extinguish the flames of burning batteries to prevent the flames from spreading.

A first storage chamber 211 containing fire extinguishing fluid is formed inside the flame retardant box 21 . Under normal conditions, the fire-extinguishing fluid is stored in the first storage chamber 211. When the battery burns, the fire-extinguishing fluid can be discharged to extinguish the flame.

The battery storage box 22 includes limit plates 221 symmetrically and vertically fixed at both ends of the top of the heat dissipation flame-retardant box 21, several square heat-insulating frames 222 vertically slidably assembled between the two limit plates 221, and connected to The linkage components 223 on several square heat insulating frames 222 form a battery storage chamber 224 on the inside of the several square heat insulating frames 222, and positioning pieces 225 are evenly arranged on the inside of the several square heat insulating frames 222. , the top of the uppermost square heat insulation frame 222 is provided with a cover 226, and the bottom of the cover 226 is provided with an elastic shrinkage member 2263. The elastic shrinkage member 2263 can resist the top of the battery and be compressed, located at The lowermost square heat insulating frame 222 is fixedly connected to the top of the heat dissipation and flame retardant box 21, and the linkage assembly 223 is used to drive the other square heat insulating frames 222 except the lowermost square heat insulating frame 222 at two limits. The position plates 221 slide vertically to form equidistant gaps between adjacent square heat insulation frames 222 . Under normal conditions, the battery is in the battery storage chamber 224 and is limited by the positioning pieces 225 on the inside of several square heat-insulating frames 222. At this time, the linkage assembly 223 can drive the lowermost square heat-insulating frame to be removed. Other square heat insulating frames 222 outside 222 slide vertically between the two limiting plates 221, so that an equidistant gap (the gap is greater than O) is formed between adjacent square heat insulating frames 222, and the flow in the box 1 The airflow can enter the battery storage chamber 224 through the equidistant gaps between adjacent square heat insulation frames 222, and take away the heat generated by the battery to dissipate the heat of the battery. When the battery burns, driven by the linkage assembly 223 The equidistant gap formed between adjacent square heat insulating frames 222 is zero, that is, the adjacent square heat insulating frames 222 abut each other. At this time, several square heat insulating frames 222 and the cover 226 form a The airtight insulated chamber isolates the burning battery from other batteries. On the one hand, it prevents the spread of fire and blocks the conduction of heat. On the other hand, it isolates oxygen to prevent the battery from burning.

It is worth mentioning that several square heat-insulating frames 222 in this technical solution can, under normal conditions, be driven by the linkage assembly 223 to form equidistant gaps (the equidistant gaps) between adjacent square-shaped heat insulating frames 222 . The gap is greater than O), the airflow flowing inside the box 1 can enter the battery storage from multiple equidistant gaps to evenly dissipate heat to all parts of the battery, and when the battery burns (generally speaking, the battery burns faster, Therefore, if the insulation speed is slow, the fire may spread to other locations.) This technical solution can synchronously move several square heat insulation frames 222 driven by the linkage assembly 223, which can quickly move adjacent square heat insulation frames The equidistant gap formed by 222 becomes O to quickly isolate the burning battery. In winter, in this technical solution, the linkage component 223 can be used to form an equidistant gap between adjacent square heat insulation frames 222 and become O. Store the battery closed to prevent the battery temperature from being too low and affecting the use of the battery.

The fire extinguishing assembly 23 includes a nozzle 231 arranged vertically inside several square heat insulation frames 222, and a liquid injection part 232 arranged in the first storage chamber 211 and connected to the input end of the nozzle 231. 232 is used to inject the fire extinguishing fluid in the first storage chamber 211 into the nozzle 231, and the nozzle 231 is evenly provided with nozzle holes on the outside. When the battery burns, the liquid injection part 232 can inject the fire extinguishing agent in the first storage chamber 211 into the nozzle 231 and then discharge it from the nozzle hole of the nozzle 231 to extinguish the burning flame of the battery.

The temperature control assembly 24 includes a temperature sensor disposed in the storage chamber. The temperature sensor can monitor the temperature in the battery storage chamber 224 in real time. When the battery temperature reaches the threshold, that is, when the battery is burning, it can promptly isolate the burning battery and start the liquid injection part 232 to extinguish the flame through the fire extinguishing agent, preventing The fire spread further.

In this specific embodiment, the fire extinguishing agent is perfluorohexanone. On the one hand, the fire-extinguishing concentration of perfluorohexanone is 4-6%, and its safety margin is relatively high, making it safer for the human body when used. On the other hand, perfluorohexanone is a liquid at room temperature and is not considered a hazardous material. It can be safely stored and transported (including air transport) in ordinary containers under normal pressure in a wide temperature range, unlike other halons. Alternatives require pressure vessels for storage and transportation. Of course, it is not limited to this, and other fire-extinguishing fluids can also be used as the fire-extinguishing fluid.

In this specific embodiment, the linkage component 223 includes a scissor-type telescopic frame symmetrically arranged vertically on both sides of a plurality of square heat-insulating frames 222. The hinge axes of each middle hinge node 2231 in the telescopic direction of the scissor-type telescopic frame. They are respectively fixedly connected to several square heat-insulating frames 222, and a linear actuator for driving the expansion and contraction of the scissor-type telescopic frame is provided in one of the diamond-shaped grids 2232 of the scissor-type telescopic frame. The scissor-type telescopic frame is an existing technology. When one of the diamond-shaped grids 2232 changes, the entire diamond-shaped grid 2232 changes at the same time to achieve telescopicity. The linear drive is an electric telescopic rod, the two ends of which are respectively hinged on both sides of one of the diamond-shaped grids 2232 of the scissor-type telescopic frame to drive the telescopic scissor-type telescopic frame.

Further, a second storage chamber 212 containing cooling liquid is formed in the flame-retardant box 21 above the first storage chamber 211. The square heat-insulating frame 222 has a hollow frame-shaped liquid cooling channel 2221 inside. The positioning piece 225 is an elastic reed, and one end of the elastic reed extends into the liquid cooling channel 2221. A connecting pipe 2222 is provided in the middle of both ends of the square heat insulation frame 222; except for the bottom square heat insulation frame 222 and Except for the uppermost square heat insulating frame 222, among the two connecting pipes 2222 of the other square heat insulating frames 222, one of the connecting pipes 2222 is connected to the connecting pipe 2222 of the square heat insulating frame 222 below it by a hose, and the other one is connected to the connecting pipe 2222 of the square heat insulating frame 222 below. The connecting pipe 2222 is connected to the square heat insulating frame 222 above it through a hose; one of the two connecting pipes 2222 of the lowermost square heat insulating frame 222 is connected to the second storage chamber 212 through a pipeline. The liquid pump 4 is connected, and the other connecting pipe 2222 is connected to the connecting pipe 2222 of the square heat insulating frame 222 above it through a hose; the two connecting pipes 2222 of the uppermost square heat insulating frame 222, one of the connecting pipes 2222 It is connected to the second storage chamber 212 through a telescopic pipe 2223, and another connecting pipe 2222 is connected to the connecting pipe 2222 of the square heat insulation frame 222 below it through a hose. Under normal conditions, the airflow flowing in the box 1 dissipates heat to the battery. When the temperature sensor detects that the temperature of a certain battery storage chamber 224 rises to the first preset value, at this time, the liquid pump 4 is started. 4. The cooling liquid inside the second storage chamber 212 can be continuously introduced into the bottom square heat insulation frame 222 through the pipeline, so that the cooling liquid enters the liquid cooling channel 2221 of the square heat insulation frame 222 from bottom to top, where The elastic reeds of the square heat insulation frame 222 can absorb the heat of the battery through thermal conduction, and then the heat is taken away by the cooling liquid through the liquid cooling channel 2221 to dissipate heat from the battery through both air cooling and water cooling. When the temperature of the battery storage chamber 224 rises to the second preset value, that is, when the battery burns, the flowing cooling liquid in the liquid cooling channel 2221 of the square heat insulation frame 222 can improve the insulation of the square heat insulation frame 222. The thermal effect is to prevent the temperature in the battery storage chamber 224 from being transmitted to other battery storage chambers 224 and causing the temperature of other batteries to rise.

In this specific embodiment, the positioning piece 225 has an included angle with the top surface of the square heat insulation frame 222 . It can increase the contact area with the battery and improve the heat dissipation and limiting effect.

In this specific embodiment, the cover 226 is also provided with a pressure relief pipe 2261, and the pressure relief pipe 2261 is provided with a pressure relief valve 2262. During the fire extinguishing process, when the air pressure in the battery storage chamber 224 increases, it will be discharged outward through the pressure relief pipe 2261 to avoid an explosion.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed in the present invention, implement the technical solutions of the present invention. Equivalent substitutions or changes of the inventive concept thereof shall be included in the protection scope of the present invention.

Claims (7)

1. A flame-retardant new energy battery box, which is characterized in that it includes a box body and several battery storage modules arranged in an array in the box body, and the box body is provided with a heat dissipation hole structure; The battery storage module includes: A flame-retardant box, the interior of which forms a first storage chamber containing fire-extinguishing fluid; The battery storage box includes limit plates that are symmetrically and vertically fixed at both ends of the top of the heat dissipation and flame-retardant box, several square heat-insulating frames that are vertically slid and assembled between the two limit plates, and several square heat-insulating frames connected to each other. The linkage assembly on the heat-insulating frame. The insides of several square heat-insulating frames are surrounded by battery storage rooms. Positioning pieces are evenly arranged on the insides of several square heat-insulating frames. The square heat-insulating frame located at the top The top of the battery is hinged with a cover, and the bottom of the cover is equipped with an elastic shrinkage member. The elastic shrinkage member can resist the top of the battery and be compressed. Fixed connection, the linkage component is used to drive the other square heat insulation frames except the bottom square heat insulation frame to slide vertically between the two limit plates, so that the adjacent square heat insulation frames form an equal distance gap; A fire extinguishing assembly, which includes nozzles arranged vertically inside several square heat-insulating frames, and a liquid injection part arranged in the first storage room and connected to the input end of the nozzle, and the liquid injection part is used for the first storage Indoor fire extinguishing fluid is injected into the nozzle, and nozzle holes are evenly arranged on the outside of the nozzle; A temperature control component includes a temperature sensor arranged in the storage chamber. 2. The flame-retardant new energy battery box according to claim 1, characterized in that the fire extinguishing agent is perfluorohexanone. 3. The flame-retardant new energy battery box according to claim 1, characterized in that the linkage assembly includes a scissor-type telescopic frame symmetrically and vertically arranged on both sides of a plurality of square heat-insulating frames. The hinge axes of each middle hinge node in the length direction of the frame are fixedly connected to several square heat-insulating frames. A linear drive for driving the expansion of the scissor-type telescopic frame is provided in one of the diamond grids. 4. The flame-retardant new energy battery box according to claim 3, characterized in that the heat dissipation hole structure includes an air inlet and an air outlet respectively symmetrically arranged at both ends of the box; the air inlet and the air outlet are respectively arranged. There are inlet fans and outlet fans. 5. The flame-retardant new energy battery box according to claim 3, wherein a second storage chamber containing coolant is formed in the flame-retardant box above the first storage chamber, and the square heat-insulating frame The interior is hollow and has a frame-shaped liquid cooling channel, the positioning pieces are heat dissipation fins, and one end of the heat dissipation fin extends into the liquid cooling channel, and connecting pipes are provided in the middle of both ends of the square heat insulation frame; Except for the lowermost square heat insulating frame and the uppermost square heat insulating frame, among the two connecting pipes of the other square heat insulating frames, one of the connecting pipes and the connecting pipe of the square heat insulating frame below pass through the hose connection, another connecting pipe is connected to the square heat-insulating frame above it through a hose; One of the two connecting pipes of the lowermost square heat insulating frame is connected to the liquid pump installed in the second storage room through a pipeline, and the other connecting pipe is connected to the connecting pipe of the square heat insulating frame above it through a soft pipe. pipe connection; One of the two connecting pipes of the uppermost square heat insulating frame is connected to the coolant storage chamber through a telescopic pipe, and the other connecting pipe is connected to the connecting pipe of the square heat insulating frame below it through a hose. 6. The flame-retardant new energy battery box according to claim 5, characterized in that the positioning piece has an included angle with the top surface of the square heat insulation frame. 7. The flame-retardant new energy battery box according to claim 5, wherein the cover is further provided with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve.