Fireproof device for battery pack of electric vehicle

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to an electric vehicle battery pack fireproof device which comprises a containing box. The top of the containing box is fixedly connected with a water storage tank; a micro water pump is fixedly connected to the side wall of the water storage tank; the output end of the micro water pump is fixedly connected with a first liquid conveying pipe; the first liquid conveying pipe penetrates through the side wall of the containing box and extends into the containing box, the first liquid conveying pipe is in sliding connection with the containing box, and during working, a switch of the micro water pump is turned on, so that the micro water pump drives a water source in the water storage tank to flow into the first liquid conveying pipe; and cooling water circularly flows in the containing box through the first liquid conveying pipe, so that heat, caused by charging of the battery pack, in the containing box is brought out, high-temperature heat generated in the charging process of the battery pack is reduced, and the problem of explosion and fire caused by overheating in the charging process of the battery pack is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, in particular to a fire prevention device for a battery pack of an electric vehicle. Background Art

[0002] An electric vehicle is a motor vehicle that is powered by an electric motor and is powered by a battery or lithium battery. It is one of the means of transportation for people.

[0003] The battery life of an electric vehicle is between 300 and 500 times, while the lithium battery life is between 2,000 and 3,000 times. Compared to the battery, the lithium battery, which can be removed for charging and is lighter in weight, has become the mainstream of electric vehicles.

[0004] Through long-term observation of use, it is found that existing battery packs are usually lithium batteries. When high-rise users charge the battery packs, they will bring the battery packs indoors for charging, and then the battery packs are usually unattended during the charging process. The battery pack's own temperature will rise during the continuous charging process. Overheating of the battery pack will cause a short circuit, which can easily cause the battery pack to explode and catch fire.

[0005] To this end, the utility model provides a fire protection device for an electric vehicle battery pack. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes an electric vehicle battery pack fire prevention device, comprising a containing box; a water tank is fixedly connected to the top of the containing box; a micro water pump is fixedly connected to the side wall of the water tank; a first infusion tube is fixedly connected to the output end of the micro water pump; the first infusion tube penetrates the side wall of the containing box and extends to the inside of the containing box, and the first infusion tube and the containing box are slidably connected; the other end of the first infusion tube away from the micro water pump is fixedly connected to the water tank, and the first infusion tube connects the water tank and the micro water pump to each other; a second infusion tube is fixedly connected between the input end of the micro water pump and the water tank; a plurality of groups of legs are fixedly connected to the bottom of the containing box; a fixed component is arranged inside the containing box, and the high-temperature heat generated during the charging process of the battery pack is reduced by the above-mentioned structure, thereby reducing the problem of explosion and fire caused by overheating during the charging process of the battery pack.

[0008] Preferably, the fixing assembly includes a spring telescopic rod; a plurality of spring telescopic rods are provided inside the containing box and are fixedly connected to the inner wall of the containing box; a fixing plate is fixedly connected to the end of the spring telescopic rod; the fixing plate is arranged around the inside of the containing box. Through the above structure, battery packs of different specifications can be fixed by the cooperation of the spring telescopic rod and the fixing plate, thereby reducing the problem of loosening of the battery pack during charging, resulting in failure to charge.

[0009] Preferably, a ventilation hole is provided in the middle of the fixing plate; a plurality of groups of ventilation holes are provided on the fixing plate, and the temperature of the charging environment of the battery pack is reduced by the above structure.

[0010] Preferably, the bottom end of the leg is slidably connected to a support rod; a socket is provided in the middle of the leg; a plurality of adjustment holes are provided in the middle of the support rod; the adjustment holes correspond to the socket; a fixing rod is slidably fitted inside the socket, and the above structure enables the charging of the battery pack to adapt to the position of a socket at a high place, thereby increasing the safety and adaptability of the battery pack when charging.

[0011] Preferably, a plurality of limiting rings are fixedly connected to the inner wall and the side wall of the containing box; the limiting rings are sleeved on the first infusion tube. The above structure reduces the possibility of the first infusion tube being entangled and causing knots, thereby improving the working stability of the first infusion tube.

[0012] Preferably, a pull rope is fixedly connected to the end of the fixing rod; the end of the pull rope away from the fixing rod is fixedly connected to the side wall of the supporting leg. The above structure reduces the problem that the fixing rod is difficult to pick up after falling because the parts are too small.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a fire prevention device for an electric vehicle battery pack. By turning on the switch of a micro water pump, the micro water pump drives the water source inside the water tank to flow into the first infusion tube, so that the cooling water circulates inside the containing box through the first infusion tube, thereby taking out the heat inside the containing box caused by the charging of the battery pack, reducing the high temperature heat generated during the charging process of the battery pack, and thus reducing the problem of explosion and fire caused by overheating during the charging process of the battery pack.

[0015] 2. The utility model describes an electric vehicle battery pack fire prevention device, which is provided with a spring telescopic rod. When the battery pack is placed in the middle of a fixed plate, the battery pack is squeezed by its own volume, causing the fixed plate to move away from the battery pack. Then, under the elastic action of the spring telescopic rod, the fixed plate is pushed to clamp the battery pack, thereby fixing the battery pack. The cooperation of the spring telescopic rod and the fixed plate can fix battery packs of different specifications, thereby reducing the problem of loosening of the battery pack during charging, resulting in failure to charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

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

[0018] Figure 2 It is a structural schematic diagram of the support rod in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the fixed plate in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the first infusion tube in the utility model;

[0021] In the figure: 1. containing box; 2. water storage tank; 3. micro water pump; 4. first infusion tube; 5. second infusion tube; 6. supporting leg; 7. spring telescopic rod; 8. fixing plate; 9. air vent; 10. supporting rod; 11. adjusting hole; 12. plug-in socket; 13. fixing rod; 14. pull rope; 15. limiting ring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 4As shown, a fire prevention device for an electric vehicle battery pack described in an embodiment of the utility model comprises a containing box 1; a water tank 2 is fixedly connected to the top of the containing box 1; a micro water pump 3 is fixedly connected to the side wall of the water tank 2; a first infusion tube 4 is fixedly connected to the output end of the micro water pump 3; the first infusion tube 4 passes through the side wall of the containing box 1 and extends to the inside of the containing box 1, and the first infusion tube 4 and the containing box 1 are slidably connected; the other end of the first infusion tube 4 away from the micro water pump 3 is fixedly connected to the water tank 2, and the first infusion tube 4 connects the water tank 2 and the micro water pump 3 to each other; a second infusion tube 5 is fixedly connected between the input end of the micro water pump 3 and the water tank 2; a plurality of groups of legs 6 are fixedly connected to the bottom of the containing box 1; a fixing component is provided inside the containing box 1, and when working, by placing the battery pack to be charged into The inside of the containing box 1 is fixed by a fixing assembly, and then the battery pack is plugged into a power source for charging. At this time, by turning on the switch of the micro water pump 3, the micro water pump 3 drives the water source inside the water tank 2 to flow into the first infusion tube 4, so that the cooling water circulates through the first infusion tube 4 inside the containing box 1, thereby taking out the heat caused by the charging of the battery pack inside the containing box 1, reducing the high-temperature heat generated during the charging process of the battery pack, and thereby reducing the explosion and fire problems caused by overheating during the charging process of the battery pack. At the same time, even if the battery pack explodes accidentally, when the water tank 2 located above the battery pack is ruptured by the explosion impact, the cooling water inside the water tank 2 leaks out, thereby being able to extinguish the battery pack, further reducing the occurrence of fires, and improving the safety of battery pack charging.

[0024] like Figure 3 to Figure 4 As shown, the fixing assembly includes a spring telescopic rod 7; a plurality of spring telescopic rods 7 are provided inside the containing box 1, and are fixedly connected to the inner wall of the containing box 1; a fixing plate 8 is fixedly connected to the end of the spring telescopic rod 7; the fixing plate 8 is arranged around the containing box 1. During operation, battery packs on the market have different sizes, so battery packs of different sizes require different fixing positions. At this time, by providing a spring telescopic rod 7, when the battery pack is placed in the middle of the fixing plate 8, it is squeezed by the volume of the battery pack itself, so that the fixing plate 8 moves away from the battery pack, and then the fixing plate 8 is pushed to clamp the battery pack under the elastic action of the spring telescopic rod 7, thereby fixing the battery pack. By cooperating with the spring telescopic rod 7 and the fixing plate 8, battery packs of different specifications can be fixed, thereby reducing the problem of loosening of the battery pack during charging, resulting in failure to charge.

[0025] like Figure 4 As shown, a ventilation hole 9 is opened in the middle of the fixing plate 8; a plurality of ventilation holes 9 are opened on the fixing plate 8. During operation, by opening a plurality of ventilation holes 9 on the fixing plate 8, the heat dissipation of the battery pack can be increased, so that the heat can be better brought out by the cooling water, thereby reducing the temperature of the charging environment of the battery pack.

[0026] like Figure 2 As shown, the bottom end of the leg 6 is slidably connected to the support rod 10; a socket 12 is provided in the middle of the leg 6; a plurality of adjustment holes 11 are provided in the middle of the support rod 10; the adjustment holes 11 correspond to the socket 12; a fixing rod 13 is slidably fitted inside the socket 12. When working, the height of the containing box 1 can be adjusted by adjusting the length between the support rod 10 and the leg 6, thereby reducing the possibility of accidents caused by children touching the battery pack when charging, and at the same time enabling the battery pack to be charged to adapt to the high socket position, thereby increasing the safety and adaptability of the battery pack when charging.

[0027] like Figure 2 As shown, a plurality of limiting rings 15 are fixedly connected to the inner wall and the side wall of the containing box 1; the limiting rings 15 are sleeved on the first infusion tube 4. When working, by providing a plurality of limiting rings 15 on the containing box 1, the limiting rings 15 can limit and straighten the first infusion tube 4, thereby reducing the possibility of the first infusion tube 4 being entangled and knotted, and improving the working stability of the first infusion tube 4.

[0028] like Figure 3 As shown, a pull rope 14 is fixedly connected to the end of the fixing rod 13; the end of the pull rope 14 away from the fixing rod 13 is fixedly connected to the side wall of the support leg 6. When working, the fixing rod 13 is fixed by providing the pull rope 14, thereby reducing the problem of the fixing rod 13 being difficult to pick up after falling due to the small parts.

[0029] like Figure 4 As shown, the first infusion tube 4 is arranged around the fixing plate 8 inside the containing box 1. When working, by making the first infusion tube 4 surround the fixing plate 8, the heat dissipation effect of the cooling water inside the first infusion tube 4 on the battery pack can be increased.

[0030] During operation, the battery pack to be charged is placed into the containing box 1, fixed by the fixing assembly, and then the battery pack is plugged into a power source for charging. At this time, the switch of the micro water pump 3 is turned on to drive the water source in the water storage tank 2 to flow into the first infusion tube 4, so that the cooling water circulates through the first infusion tube 4 in the containing box 1, thereby taking out the heat caused by the charging of the battery pack in the containing box 1, reducing the high temperature heat generated during the charging process of the battery pack, and thereby reducing the explosion and fire caused by overheating during the charging process of the battery pack. There are different sizes of battery packs on the market, so different sizes of battery packs require different fixed positions. At this time, a spring telescopic rod 7 is provided, and when the battery pack is placed in the middle of the fixing plate 8, it is electrically The extrusion of the battery pack's own volume causes the fixing plate 8 to move away from the battery pack, and then the fixing plate 8 is pushed to clamp the battery pack under the elastic action of the spring telescopic rod 7, thereby fixing the battery pack. By providing multiple sets of air holes 9 on the fixing plate 8, the heat dissipation of the battery pack can be increased, so that the heat can be better taken out by the cooling water. By adjusting the length between the support rod 10 and the support leg 6, the height of the containing box 1 can be adjusted, thereby reducing the possibility of accidents caused by children touching the battery pack when charging. By providing multiple limiting rings 15 on the containing box 1, the limiting ring 15 can limit and straighten the first infusion tube 4. By providing a pull rope 14 to fix the fixing rod 13, the problem of the fixing rod 13 being difficult to pick up after falling due to small parts is reduced.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fire protection device for an electric vehicle battery pack, comprising a containing box (1); characterized in that: The top of the containing box (1) is fixedly connected to a water storage tank (2); the side wall of the water storage tank (2) is fixedly connected to a micro water pump (3); the output end of the micro water pump (3) is fixedly connected to a first infusion tube (4); the first infusion tube (4) penetrates the side wall of the containing box (1) and extends into the interior of the containing box (1), and the first infusion tube (4) and the containing box (1) are slidably connected; the other end of the first infusion tube (4) away from the micro water pump (3) is fixedly connected to the water storage tank (2), and the first infusion tube (4) connects the water storage tank (2) and the micro water pump (3) to each other; a second infusion tube (5) is fixedly connected between the input end of the micro water pump (3) and the water storage tank (2); a plurality of groups of legs (6) are fixedly connected to the bottom of the containing box (1); and a fixing component is provided inside the containing box (1).

2. The fire protection device for an electric vehicle battery pack according to claim 1, characterized in that: The fixing assembly comprises a spring telescopic rod (7); a plurality of spring telescopic rods (7) are provided inside the containing box (1) and are fixedly connected to the inner wall of the containing box (1); a fixing plate (8) is fixedly connected to the end of the spring telescopic rod (7); the fixing plate (8) is arranged around the inside of the containing box (1).

3. The fire protection device for an electric vehicle battery pack according to claim 2, characterized in that: A ventilation hole (9) is provided in the middle of the fixing plate (8); a plurality of groups of ventilation holes (9) are provided on the fixing plate (8).

4. The fire protection device for an electric vehicle battery pack according to claim 3, characterized in that: The bottom end of the support leg (6) is slidably connected to a support rod (10); a plug hole (12) is provided in the middle of the support leg (6); a plurality of adjustment holes (11) are provided in the middle of the support rod (10); the adjustment holes (11) correspond to the plug hole (12); and a fixing rod (13) is slidably fitted inside the plug hole (12).

5. The fire protection device for an electric vehicle battery pack according to claim 4, characterized in that: A plurality of groups of limiting rings (15) are fixedly connected to the inner wall and the side wall of the containing box (1); the limiting rings (15) are sleeved on the first infusion tube (4).

6. The fire protection device for an electric vehicle battery pack according to claim 5, characterized in that: A pull rope (14) is fixedly connected to the end of the fixing rod (13); and one end of the pull rope (14) away from the fixing rod (13) is fixedly connected to the side wall of the supporting leg (6).

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