Fireproof and explosion-proof liquid cooling device for new energy automobile battery

Abstract

The invention discloses a fire-proof and explosion-proof liquid cooling device for a new energy automobile battery, and relates to the field of new energy automobile batteries, the fire-proof and explosion-proof liquid cooling device comprises a mounting rack, a heat dissipation assembly is mounted on the inner side of the mounting rack, a heat dissipation connecting trough plate is welded to the bottom end of a bottom cover plate, and an oil inlet is formed in the bottom end of the bottom cover plate; the automobile cooling device is scientific and reasonable in structure and safe and convenient to use, air at different flow speeds can be guided into the inner side of an air inlet groove through different running speeds of an automobile, the cooling effect is good, the cooling effect is good, the cooling effect is good, and the service life of the automobile is prolonged. The high-speed flowing air can take away heat more quickly, at the moment, the heat dissipation efficiency of heat dissipation oil in a heat dissipation connecting groove plate can be improved, meanwhile, the high-speed air can dissipate heat of a heat dissipation box, the high-speed air can continuously cool the heat dissipation oil in a liquid storage cavity, and the heat dissipation efficiency of the heat dissipation oil in the liquid storage cavity can be improved. And the cooled heat dissipation oil can be pumped to the inner side of the I-shaped groove plate again, so that high-temperature short-circuit fire is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and particularly to a fire and explosion prevention liquid cooling device for new energy vehicle batteries. Background Art

[0002] As one of the core components of new energy vehicles, the new energy vehicle battery main body group of new energy vehicles is responsible for providing power for new energy vehicles. The quality of it directly affects the safety and service life of the vehicles. Since a large amount of heat will be generated due to the intense chemical reactions inside during the charging and discharging process of the new energy vehicle battery main body group, which leads to a sharp change in the temperature of the new energy vehicle battery main body group and the surrounding environment of the new energy vehicle battery main body group. If heat dissipation is not continued in time, it will be very dangerous for the battery to short-circuit and catch fire or even explode;

[0003] However, the existing battery heat dissipation systems are difficult to increase the heat dissipation efficiency according to the driving speed of electric vehicles, and the heat dissipation amount has a maximum limit, making it difficult to effectively dissipate heat quickly during high-speed driving. This not only limits the output power of the battery, but also the low heat dissipation efficiency makes the batteries under high load more likely to catch fire and explode. To avoid the above technical problems, it is indeed necessary to provide a fire and explosion prevention liquid cooling device for new energy vehicle batteries to overcome the defects in the prior art. Summary of the Invention

[0004] The present invention provides a fire and explosion prevention liquid cooling device for new energy vehicle batteries, which can effectively solve the problems in the above background art that the existing battery heat dissipation systems are difficult to increase the heat dissipation efficiency according to the driving speed of electric vehicles, the heat dissipation amount has a maximum limit, making it difficult to effectively dissipate heat quickly during high-speed driving, not only limiting the output power of the battery, but also the low heat dissipation efficiency makes the batteries under high load more likely to catch fire and explode.

[0005] To achieve the above object, the present invention provides the following technical solution: A fire and explosion prevention liquid cooling device for new energy vehicle batteries, including a mounting frame, and a heat dissipation component is installed inside the mounting frame;

[0006] The heat dissipation component includes an I-shaped groove plate;

[0007] The I-shaped groove plate is installed inside the mounting frame, a positioning groove is opened inside the I-shaped groove plate, and a fixed groove plate is welded to the positioning groove;

[0008] A clamping groove is opened on the outer side of the I-shaped groove plate, a top cover plate is welded to the top end of the I-shaped groove plate, an inner fixed groove cylinder is welded to the bottom end of the top cover plate, a battery cell groove is opened inside the inner fixed groove cylinder, a flow cavity is formed between the inner fixed groove cylinder and the fixed groove plate, and a bottom cover plate is welded to the bottom end of the inner fixed groove cylinder;

[0009] The bottom end of the bottom cover plate is welded with a heat dissipation connection groove plate. An oil inlet is opened at the bottom end of the bottom cover plate. Heat dissipation fins are welded on the outer side of the heat dissipation connection groove plate. A heat dissipation box is welded at the bottom end of the heat dissipation connection groove plate. A pump bracket is welded to one end face of the I-shaped groove plate. A liquid extraction pump is installed inside the pump bracket. The liquid inlet end of the liquid extraction pump is connected with a liquid inlet pipe, and the liquid outlet end of the liquid extraction pump is connected with a liquid extraction pipe.

[0010] According to the above technical solution, a battery cell is embedded inside the battery cell groove. A wind guide groove plate is welded to the bottom end of the pump bracket. An air inlet groove is opened on the front end face of the wind guide groove plate. A heat dissipation groove is opened at the bottom end of the wind guide groove plate. An installation thread groove is opened inside the pump bracket. A liquid storage chamber is opened inside the heat dissipation box.

[0011] According to the above technical solution, there are two I-shaped groove plates, and the two I-shaped groove plates are symmetrically welded to the top end and the bottom end of the fixed groove plate;

[0012] There are two air inlet grooves, and the two air inlet grooves are symmetrically opened on the front and back of the wind guide groove plate.

[0013] According to the above technical solution, there are two pump brackets, and the two pump brackets are symmetrically installed on the front and back of the installation frame.

[0014] According to the above technical solution, the liquid inlet pipe is communicated with the internal cavity of the I-shaped groove plate, and the liquid extraction pipe is communicated with the internal cavity of the heat dissipation box.

[0015] According to the above technical solution, there are several heat dissipation connection groove plates, and the several heat dissipation connection groove plates are equidistantly installed at the bottom position of the bottom cover plate. The heat dissipation connection groove plate is communicated with the internal cavity of the heat dissipation box.

[0016] According to the above technical solution, there are two groups of liquid extraction pumps, and the two groups of liquid extraction pumps are symmetrically installed inside the pump bracket. The input end of the liquid extraction pump is electrically connected to the output end of the internal battery pack.

[0017] According to the above technical solution, an explosion-proof component is installed at the bottom end of the wind guide groove plate;

[0018] The explosion-proof component includes a limiting cylinder;

[0019] Limiting cylinders are welded at the four corners of the bottom end of the wind guide groove plate. A support block is welded to the bottom end of the wind guide groove plate. A fixed screw is threadedly connected inside the limiting cylinder. A bottom guard plate is sleeved on the outer side of the fixed screw. A limiting disc is welded to the top end of the bottom guard plate. A weight-increasing guard plate is sleeved on the outer side of the fixed screw. A limiting groove is opened at the bottom end of the weight-increasing guard plate. An anti-scratch foam is bonded to the bottom end of the weight-increasing guard plate. A noise elimination chamber is opened inside the weight-increasing guard plate. A noise elimination rubber is embedded inside the noise elimination chamber.

[0020] According to the above technical solution, a plurality of weight-increasing guard plates are provided, and the plurality of weight-increasing guard plates are sleeved at equal intervals on the outer side of the fixing screw.

[0021] According to the above technical solution, the limiting groove is opened at the corresponding position of the bottom end of the weight-increasing guard plate and the limiting disk, and the outer diameter of the limiting disk is equal to the inner diameter of the limiting groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use:

[0023] 1. A heat dissipation component is provided. According to the speeds of the vehicle during different driving conditions, air with different flow rates can be introduced into the inner side of the air inlet groove. The high-speed flowing air can carry away heat more quickly. At this time, the heat dissipation efficiency of the heat dissipation oil in the heat dissipation connection groove plate can be accelerated, and at the same time, the high-speed air will dissipate heat from the heat dissipation box. These high-speed airflows will continuously cool the heat dissipation oil in the liquid storage chamber. The cooled heat dissipation oil will be pumped into the inner side of the I-shaped groove plate again, and then flow through the circulation chamber again to conduct high-efficiency cyclic heat dissipation on the battery cells, thereby ensuring that the battery can dissipate heat efficiently at any time and preventing high-temperature short-circuit ignition.

[0024] 2. An explosion-proof component is provided. The weight is balanced through the bottom guard plate to ensure the stability of the battery pack, and further ensure the stability of the vehicle during driving. And when a large amount of weight is required, the limiting disk on the top of the weight-increasing guard plate can be aligned and clamped with the limiting groove, and then multiple weight-increasing guard plates can be installed at the bottom of the battery pack. This can not only achieve weight balance but also ensure that the vehicle will not scrape the bottom and be damaged during driving, further protecting the battery pack. During driving, the anti-scratch foam can prevent the flying gravel from damaging the weight-increasing guard plate, and the noise can be reduced through multiple noise-canceling rubbers, improving the quietness of the vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.

[0026] In the drawings:

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a schematic installation structure diagram of the liquid extraction pump of the present invention;

[0029] Figure 3 is a schematic structural diagram of the heat dissipation component of the present invention;

[0030] Figure 4 is a schematic installation structure diagram of the fixed groove plate of the present invention;

[0031] Figure 5 It is a schematic diagram of the installation structure of the internal fixing drum of the present invention;

[0032] Figure 6 It is a schematic diagram of the installation structure of the heat dissipation fins of the present invention;

[0033] Figure 7 It is a schematic diagram of the installation structure of the support block of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the explosion-proof component of the present invention;

[0035] Figure 9 It is a schematic diagram of the installation structure of the weight-increasing protection plate of the present invention;

[0036] Figure 10 It is a schematic diagram of the installation structure of the noise-canceling rubber of the present invention;

[0037] Reference numerals in the figure: 1. Installation frame;

[0038] 2. Heat dissipation component; 201. I-shaped groove plate; 202. Positioning groove; 203. Fixed groove plate; 204. Clamping groove; 205. Top cover plate; 206. Internal fixing drum; 207. Battery cell groove; 208. Flow chamber; 209. Bottom cover plate; 210. Heat dissipation connection groove plate; 211. Oil inlet; 212. Heat dissipation fins; 213. Heat dissipation box; 214. Pump frame; 215. Liquid extraction pump; 216. Inlet liquid pipe; 217. Liquid extraction pipe; 218. Battery cell; 219. Air guide groove plate; 220. Air inlet groove; 221. Heat dissipation groove; 222. Installation thread groove; 223. Liquid storage chamber;

[0039] 3. Explosion-proof component; 301. Limiting cylinder; 302. Support block; 303. Fixed screw; 304. Bottom protection plate; 305. Limiting disc; 306. Weight-increasing protection plate; 307. Limiting groove; 308. Anti-scratch foam; 309. Noise-canceling chamber; 310. Noise-canceling rubber. Detailed implementation manners

[0040] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0041] Embodiment: As Figures 1-10 shown, the present invention provides a technical solution, a fire and explosion-proof liquid cooling device for a new energy vehicle battery, including an installation frame 1, and a heat dissipation component 2 is installed inside the installation frame 1;

[0042] The heat dissipation component 2 includes an I-shaped groove plate 201, a positioning groove 202, a fixed groove plate 203, a clamping groove 204, a top cover plate 205, an inner fixed groove cylinder 206, a battery cell groove 207, a circulation chamber 208, a bottom cover plate 209, a heat dissipation connection groove plate 210, an oil inlet 211, heat dissipation fins 212, a heat dissipation box 213, a pump bracket 214, a liquid extraction pump 215, a liquid inlet pipe 216, a liquid extraction pipe 217, a battery cell 218, a wind guiding groove plate 219, an air inlet groove 220, a heat dissipation groove 221, an installation thread groove 222, and a liquid storage chamber 223;

[0043] The I-shaped groove plate 201 is installed inside the mounting frame 1. There are two I-shaped groove plates 201, and the two I-shaped groove plates 201 are symmetrically welded to the top and bottom ends of the fixed groove plate 203 to prevent the leakage of heat dissipation oil. A positioning groove 202 is opened inside the I-shaped groove plate 201, and the fixed groove plate 203 is welded to the positioning groove 202. A clamping groove 204 is opened outside the I-shaped groove plate 201. The top cover plate 205 is welded to the top end of the I-shaped groove plate 201. The inner fixed groove cylinder 206 is welded to the bottom end of the top cover plate 205. A battery cell groove 207 is opened inside the inner fixed groove cylinder 206. A circulation chamber 208 is formed between the inner fixed groove cylinder 206 and the fixed groove plate 203. The bottom cover plate 209 is welded to the bottom end of the inner fixed groove cylinder 206;

[0044] The bottom cover plate 209 is welded with a heat dissipation connection groove plate 210. There are several heat dissipation connection groove plates 210, and the several heat dissipation connection groove plates 210 are equidistantly installed at the bottom position of the bottom cover plate 209. Is the heat dissipation connection groove plate 210 connected to the inner cavity of the heat dissipation box 213? It is beneficial to quickly cool the heat dissipation oil. An oil inlet 211 is opened at the bottom end of the bottom cover plate 209. Heat dissipation fins 212 are welded to the outside of the heat dissipation connection groove plate 210. The heat dissipation box 213 is welded to the bottom end of the heat dissipation connection groove plate 210. A pump bracket 214 is welded to one side end face of the I-shaped groove plate 201. There are two pump brackets 214, and the two pump brackets 214 are symmetrically installed on the front and back of the mounting frame 1 to facilitate the circulation of the heat dissipation oil. A liquid extraction pump 215 is installed inside the pump bracket 214. There are two groups of liquid extraction pumps 215, and the two groups of liquid extraction pumps 215 are symmetrically installed inside the pump bracket 214. The input end of the liquid extraction pump 215 is electrically connected to the output end of the internal battery pack to improve the heat dissipation efficiency. The liquid inlet end of the liquid extraction pump 215 is connected with a liquid inlet pipe 216, and the liquid outlet end of the liquid extraction pump 215 is connected with a liquid extraction pipe 217. The liquid inlet pipe 216 is connected to the inner cavity of the I-shaped groove plate 201, and the liquid extraction pipe 217 is connected to the inner cavity of the heat dissipation box 213 to facilitate heat dissipation;

[0045] The inside of the battery cell slot 207 is embedded with a battery cell 218. The bottom end of the pump bracket 214 is welded with an air guide groove plate 219. An air inlet groove 220 is formed on the front end face of the air guide groove plate 219. There are two air inlet grooves 220, and the two air inlet grooves 220 are symmetrically arranged on the front and back of the air guide groove plate 219 to accelerate the air flow rate. A heat dissipation groove 221 is formed at the bottom end of the air guide groove plate 219. An installation thread groove 222 is formed inside the pump bracket 214. A liquid storage chamber 223 is formed inside the heat dissipation box 213.

[0046] An explosion-proof component 3 is installed at the bottom end of the air guide groove plate 219;

[0047] The explosion-proof component 3 includes a limit cylinder 301, a support block 302, a fixing screw 303, a bottom guard plate 304, a limit disc 305, a weight-increasing guard plate 306, a limit groove 307, an anti-scratch foam 308, a noise elimination chamber 309 and a noise elimination rubber 310;

[0048] Limit cylinders 301 are welded at the four corners of the bottom end of the air guide groove plate 219. A support block 302 is welded at the bottom end of the air guide groove plate 219. A fixing screw 303 is threadedly connected inside the limit cylinder 301. A bottom guard plate 304 is sleeved on the outer side of the fixing screw 303. A limit disc 305 is welded at the top end of the bottom guard plate 304. A weight-increasing guard plate 306 is sleeved on the outer side of the fixing screw 303. There are several weight-increasing guard plates 306, and the several weight-increasing guard plates 306 are equidistantly sleeved on the outer side position of the fixing screw 303, which is beneficial to increasing stability. A limit groove 307 is formed at the bottom end of the weight-increasing guard plate 306. The limit groove 307 is formed at the corresponding position between the bottom end of the weight-increasing guard plate 306 and the limit disc 305. The outer diameter of the limit disc 305 is equal to the inner diameter of the limit groove 307, which is beneficial to quick installation. An anti-scratch foam 308 is bonded at the bottom end of the weight-increasing guard plate 306. A noise elimination chamber 309 is formed inside the weight-increasing guard plate 306. A noise elimination rubber 310 is embedded inside the noise elimination chamber 309.

[0049] The working principle and usage process of the present invention: First, during the driving process of an electric vehicle, a large amount of high-speed air flow will pass through the bottom of the electric vehicle. At this time, these large amounts of high-speed air will pour into the inside of the air inlet groove 220. At this time, these high-speed air will pass through the surface of the heat dissipation fins 212, so that the heat dissipation connection groove plate 210 can be cooled through the heat dissipation fins 212;

[0050] When all the liquid extraction pumps 215 are turned on during the running of the electric vehicle, the liquid extraction pumps 215 will extract the heat dissipation oil inside the heat dissipation tank 213 to the inside of the liquid extraction pumps 215 through the liquid inlet pipe 216. Subsequently, these heat dissipation oils will be filled into the inside of the I-shaped groove plate 201 through the liquid inlet pipe 216. Then, the heat dissipation oil will cool the internal fixed groove cylinder 206 through the circulation chamber 208. The cooled internal fixed groove cylinder 206 will continuously cool the internal battery cells 218. The heat dissipation oil that has absorbed the heat will flow to the position of the oil inlet 211, and then flow to the inside of the heat dissipation connection groove plate 210 through the oil inlet 211. At this time, the high-speed flowing air will cool the heat dissipation fins 212, and continue to cool the heat dissipation connection groove plate 210 through the heat dissipation fins 212. At this time, the cooled heat dissipation oil will flow back into the liquid storage chamber 223 to form low-temperature oil;

[0051] As the speed of the vehicle continues to increase, the output power of the battery cells 218 will also increase accordingly. And at this time, the air speed flowing through the vehicle also continuously increases. At this time, the amount of air flowing through the heat dissipation fins 212 will also continuously increase. Thus, the high-speed flowing air will take away the heat more quickly. At this time, the heat dissipation efficiency of the heat dissipation oil inside the heat dissipation connection groove plate 210 can be accelerated. And at the same time, the high-speed air will dissipate heat from the heat dissipation tank 213. These high-speed air will continuously cool the heat dissipation oil inside the liquid storage chamber 223. The cooled heat dissipation oil will be extracted to the inside of the I-shaped groove plate 201 again, and thus flow through the circulation chamber 208 again to conduct cyclic heat dissipation for the battery cells 218;

[0052] And when the vehicle collides, after the mounting frame 1 is deformed, it will squeeze the I-shaped groove plate 201. When the collision force is large, the I-shaped groove plate 201 will break the I-shaped groove plate 201 so that the heat dissipation oil can be quickly discharged from the bottom. And the battery cells 218 are separated by the internal fixed groove cylinder 206, which can prevent the short circuit of the battery cells 218 caused by the heat dissipation oil mixed with impurities, thus preventing the battery from catching fire. And when the vehicle bottoms out, the first to be impacted is the heat dissipation tank 213. At this time, the heat dissipation tank 213 will absorb most of the impact, which can prevent the bottoming out from damaging the battery cells 218 and further ensure the battery safety;

[0053] Through the speed of the vehicle during different driving, air with different flow rates can be introduced into the inside of the air inlet groove 220. The high-speed flowing air will take away the heat more quickly. At this time, the heat dissipation efficiency of the heat dissipation oil inside the heat dissipation connection groove plate 210 can be accelerated. And at the same time, the high-speed air will dissipate heat from the heat dissipation tank 213. These high-speed air will continuously cool the heat dissipation oil inside the liquid storage chamber 223. The cooled heat dissipation oil will be extracted to the inside of the I-shaped groove plate 201 again, and thus flow through the circulation chamber 208 again to conduct high-efficiency cyclic heat dissipation for the battery cells 218, thereby ensuring that the battery can dissipate heat efficiently at any time and preventing high-temperature short circuit and fire;

[0054] Finally, when manufacturing different cars, battery packs of different weights are used. At this time, in order to keep the center of gravity of the battery pack evenly distributed, the bottom guard plate 304 can be moved to the bottom of the limiting cylinder 301, and then the bottom guard plate 304 is fixed at the bottom position of the air guide groove plate 219 through the fixing screw 303, so that weight balancing can be achieved through the bottom guard plate 304, thereby ensuring the stability of the battery pack and further ensuring the stability of the vehicle during driving. And when a large amount of weight is required, the limiting disc 305 at the top of the weight increasing guard plate 306 can be aligned and clamped with the limiting groove 307, and then multiple weight increasing guard plates 306 are installed at the bottom of the battery pack, which can not only be used for weight balancing but also ensure that the vehicle will not scrape the bottom and be damaged during driving, further protecting the battery pack. During driving, the anti-scratch foam 308 can prevent the splashing stones from damaging the weight increasing guard plate 306, and the road noise during vehicle driving can be silenced through multiple noise reduction rubbers 310, improving the quietness of vehicle driving.

[0055] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fire and explosion-proof liquid cooling device for a new energy vehicle battery, comprising a mounting frame (1), characterized in that: A heat dissipation component (2) is installed inside the mounting bracket (1); The heat dissipation component (2) includes an I-shaped groove plate (201); An I-shaped groove plate (201) is installed inside the mounting bracket (1). A positioning groove (202) is formed inside the I-shaped groove plate (201), and a fixed groove plate (203) is welded to the positioning groove (202); A clamping groove (204) is formed on the outer side of the I-shaped groove plate (201). A top cover plate (205) is welded to the top end of the I-shaped groove plate (201). An inner fixed groove cylinder (206) is welded to the bottom end of the top cover plate (205). A battery cell groove (207) is formed inside the inner fixed groove cylinder (206). A flow chamber (208) is formed between the inner fixed groove cylinder (206) and the fixed groove plate (203). A bottom cover plate (209) is welded to the bottom end of the inner fixed groove cylinder (206); A heat dissipation connection groove plate (210) is welded to the bottom end of the bottom cover plate (209). An oil inlet (211) is formed at the bottom end of the bottom cover plate (209). Heat dissipation fins (212) are welded to the outer side of the heat dissipation connection groove plate (210). A heat dissipation box (213) is welded to the bottom end of the heat dissipation connection groove plate (210). A pump bracket (214) is welded to one side end face of the I-shaped groove plate (201). A liquid pumping pump (215) is installed inside the pump bracket (214). An inlet liquid pipe (216) is connected to the inlet liquid end of the liquid pumping pump (215). An extraction liquid pipe (217) is connected to the outlet liquid end of the liquid pumping pump (215).

2. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 1, wherein: A battery cell (218) is embedded inside the battery cell groove (207). A wind guiding groove plate (219) is welded to the bottom end of the pump bracket (214). An air inlet groove (220) is formed on the front end face of the wind guiding groove plate (219). A heat dissipation groove (221) is formed at the bottom end of the wind guiding groove plate (219). A mounting threaded groove (222) is formed inside the pump bracket (214). A liquid storage chamber (223) is formed inside the heat dissipation box (213).

3. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 2, wherein: There are two I-shaped groove plates (201), and the two I-shaped groove plates (201) are symmetrically welded to the top end and the bottom end of the fixed groove plate (203); There are two air inlet grooves (220), and the two air inlet grooves (220) are symmetrically formed on the front and the back of the wind guiding groove plate (219).

4. A new energy vehicle battery fire and explosion prevention liquid cooling device according to claim 1, characterized in that: There are two pump brackets (214), and the two pump brackets (214) are symmetrically installed on the front and the back of the mounting bracket (1).

5. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 1, characterized in that: The inlet liquid pipe (216) is communicated with the internal chamber of the I-shaped groove plate (201), and the extraction liquid pipe (217) is communicated with the internal chamber of the heat dissipation box (213).

6. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 1, wherein: There are several heat dissipation connection groove plates (210), and the several heat dissipation connection groove plates (210) are equidistantly installed at the bottom position of the bottom cover plate (209), and the heat dissipation connection groove plates (210) are communicated with the internal chamber of the heat dissipation box (213).

7. A new energy vehicle battery fire and explosion prevention liquid cooling device according to claim 1, characterized in that: There are two sets of the liquid extraction pumps (215), and the two sets of liquid extraction pumps (215) are symmetrically installed inside the pump frame (214). The input end of the liquid extraction pump (215) is electrically connected to the output end of the internal battery pack.

8. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 2, characterized in that: An explosion-proof component (3) is installed at the bottom end of the air guide groove plate (219); The explosion-proof component (3) includes a limit cylinder (301); Limit cylinders (301) are welded at the four corners of the bottom end of the air guide groove plate (219). A support block (302) is welded at the bottom end of the air guide groove plate (219). A fixing screw (303) is threadedly connected inside the limit cylinder (301). A bottom protection plate (304) is sleeved on the outer side of the fixing screw (303). A limit disc (305) is welded at the top end of the bottom protection plate (304). A weight-increasing protection plate (306) is sleeved on the outer side of the fixing screw (303). A limit groove (307) is opened at the bottom end of the weight-increasing protection plate (306). An anti-scratch foam (308) is bonded at the bottom end of the weight-increasing protection plate (306). A noise elimination chamber (309) is opened inside the weight-increasing protection plate (306). A noise elimination rubber (310) is embedded inside the noise elimination chamber (309).

9. The liquid cooling device for preventing fire and explosion of a new energy vehicle battery according to claim 8, characterized in that: There are several weight-increasing protection plates (306), and the several weight-increasing protection plates (306) are equidistantly sleeved on the outer side of the fixing screw (303).

10. A new energy vehicle battery fire and explosion prevention liquid cooling device according to claim 8, characterized in that: The limit groove (307) is opened at the corresponding position of the bottom end of the weight-increasing protection plate (306) and the limit disc (305), and the outer diameter of the limit disc (305) is equal to the inner diameter of the limit groove (307).

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