Integrated liquid-cooled battery pack box body

Abstract

The invention belongs to the technical field of battery packs, and particularly relates to an integrated liquid-cooled battery pack box body, which comprises a box body assembly and a heat dissipation assembly arranged on the box body assembly, the heat dissipation assembly comprises an air cooling mechanism arranged in the box body assembly in a surrounding mode and a filtering mechanism arranged at the bottom of the box body assembly. The air cooling mechanism comprises a fixed seat embedded in the box body assembly, an air hole formed in the bottom of the fixed seat, and a ventilation plate vertically embedded in the fixed seat. Through the heat dissipation assembly, external air can be sucked into the air storage box from the heat dissipation opening, the air holes and the ventilation plates through the air pump, heat in each group of liquid cooling boxes is absorbed, then hot air flow is discharged into the heat dissipation opening from the other group of ventilation plates through the air pump, and then the hot air flow is discharged; and meanwhile, heat around the other group of ventilation plates can be taken out during exhaust, so that circulating air cooling is realized, the air inlet and outlet amount can be controlled, and the design is reasonable.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and in particular to an integrated liquid-cooled battery pack box. Background Art

[0002] At present, new energy vehicle power batteries are mainly divided into two categories, one is lithium iron phosphate battery, the other is ternary lithium battery. The energy density of lithium iron phosphate battery is higher than that of ternary lithium battery, but its safety is poorer and its low-temperature performance is insufficient, while the ternary lithium battery is just the opposite.

[0003] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new vehicle power devices), integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include four major types: hybrid electric vehicles (HEV), pure electric vehicles (BEV, including solar vehicles), fuel cell electric vehicles (FCEV), and other new energy vehicles (such as supercapacitors, flywheels and other high-efficiency energy storage devices). The promotion of new energy vehicles is to meet the needs of environmental protection and the oil crisis, and to reduce or abandon the current mainstream models that burn traditional gasoline or diesel to drive internal combustion engines.

[0004] To protect the car from early deterioration of the battery pack's range, many (though not all) electric vehicles are equipped with sophisticated thermal management systems that keep the battery at a safe temperature through liquid cooling, which is particularly important for electric vehicles operating in particularly hot climates.

[0005] Existing liquid-cooled battery pack cases generally use natural heat dissipation to diffuse heat from the inside of the battery pack to the outside. The way to improve heat dissipation efficiency is to increase the thermal conductivity of the material. However, for battery packs in hot weather, conventional liquid cooling is also inadequate. Even if air cooling can improve heat dissipation efficiency, the battery pack is generally located on the chassis of new energy vehicles, where there is a lot of dust and dirt, and air cooling is difficult to implement. Therefore, we propose an integrated liquid-cooled battery pack case, which can greatly improve the heat dissipation efficiency of liquid cooling when combined with air cooling, ensuring that the battery pack operates in a high temperature environment. Summary of the invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0007] To this end, the technical solution adopted in the present invention is: An integrated liquid-cooled battery pack box, comprising: a box assembly and a heat dissipation assembly arranged on the box assembly; the heat dissipation assembly comprises an air cooling mechanism arranged around the box assembly and a filtering mechanism arranged at the bottom of the box assembly; the air cooling mechanism comprises a fixing seat embedded in the box assembly, an air hole opened at the bottom of the fixing seat, a ventilation plate vertically embedded in the fixing seat, a heat dissipation port opened at the bottom of the box assembly, a filter plate 1 installed on the outside of the heat dissipation port, an air storage box embedded in the top of the box assembly and connected to the ventilation plate, and an air pump connected to the air storage box; the filtering mechanism comprises a protective plate fixed to the top of the heat dissipation port, an electric telescopic rod fixed to the middle of the protective plate, a filter plate 2 inserted into the driving end of the electric telescopic rod, a filter hole opened on the filter plate 2, a torsion spring shaft fixed to both ends of the filter hole, a movable plate fixed to the torsion spring shaft, a guide groove opened at the bottom of the box assembly for the movable plate to be clamped, and a top rod fixed to the bottom of the filter plate 2.

[0008] In a preferred example, the present invention can be further configured as follows: the box body assembly includes a box base, a fixed frame embedded in the box base, a box cover assembled on the top of the box base, a liquid cooling box arranged on the inner side of the box base, and a battery pack placed inside the liquid cooling box.

[0009] In a preferred example, the present invention can be further configured as follows: the fixing seat includes an L-shaped plate structure arranged around the side of the box assembly and a plate structure arranged in the middle of the bottom surface of the box assembly.

[0010] In a preferred example, the present invention can be further configured as follows: filter cotton is arranged in the air hole.

[0011] In a preferred example, the present invention can be further configured as follows: a second liquid cooling box located on the side of the air hole and the heat dissipation port is further provided at the bottom of the battery pack.

[0012] In a preferred example, the present invention can be further configured as follows: a support frame is inserted into the ventilation plate.

[0013] In a preferred example, the present invention can be further configured as follows: a heat sink is provided at the bottom of the air storage box, and a liquid cooling box 3 is provided below the heat sink.

[0014] In a preferred example, the present invention can be further configured as follows: a filter screen is fixed at the bottom of the filter plate 2.

[0015] In a preferred example, the present invention can be further configured as follows: the filter holes are arranged alternately with the filter holes on the first filter plate.

[0016] The above technical solution of the present invention has the following beneficial technical effects: 1. In the present invention, through the heat dissipation component, an air pump can be used to suck outside air from the heat dissipation port, the air hole, and the ventilation plate into the air storage box to absorb the heat in each group of liquid cooling boxes, and then the air pump is used to discharge the hot air flow from the ventilation plate of another group to the heat dissipation port, and then discharged. At the same time, the heat around the other group of ventilation plates can also be taken out during the discharge, thus realizing circulating air cooling. This solution can control the amount of inlet and outlet air, and the design is reasonable.

[0017] 2. In the present invention, the heat dissipation component can be used to perform double filtration on the incoming air by using filter plate one and filter plate two. When air cooling is not needed, filter plate two pushes filter plate two to move downward so that filter plate two is pressed on filter plate one. The filter holes are staggered with the filter holes on filter plate one to prevent the entry of outside air and play a sealing role. In addition, the push rod can enter the filter holes on filter plate one to clean the filtered material on the outside of filter plate one, which has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A cross-sectional view of an integrated liquid-cooled battery pack box according to an embodiment of the present invention; Figure 2 This is an enlarged view of the integrated liquid-cooled battery pack box A according to an embodiment of the present invention; Figure 3 The figure is a schematic diagram of a support frame structure according to an embodiment of the present invention.

[0019] Reference numerals: 100, box assembly; 110, box seat; 120, fixing frame; 130, box cover; 140, liquid cooling box 1; 150, battery pack; 151, liquid cooling box 2; 200, heat dissipation assembly; 210, fixing seat; 220, air hole; 221, filter cotton; 230, heat dissipation port; 240, filter plate 1; 250, air storage box; 251, heat dissipation plate; 252, liquid cooling box 3; 260, air pump; 270, ventilation plate; 271, support frame; 310, protective plate; 320, electric telescopic rod; 330, filter plate 2; 331, filter screen; 340, filter hole; 350, torsion spring shaft; 360, movable plate; 370, guide groove; 380, push rod. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0022] An integrated liquid-cooled battery pack case provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0023] Combination Figure 1-3 As shown, the present invention provides an integrated liquid-cooled battery pack case, comprising: a case assembly 100 and a heat dissipation assembly 200 disposed on the case assembly 100 .

[0024] Specifically, the box assembly 100 includes a box base 110, a fixed frame 120 embedded in the box base 110, a box cover 130 assembled on the top of the box base 110, a liquid cooling box 140 arranged on the inner side of the box base 110, and a battery pack 150 placed on the inner side of the liquid cooling box 140. The fixed frame 120 is arranged in the box base 110 to ensure the structural strength of the battery pack, which is more reasonable.

[0025] The heat dissipation assembly 200 includes an air cooling mechanism arranged around the box assembly 100 and a filtering mechanism arranged at the bottom of the box assembly 100; the air cooling mechanism includes a fixing seat 210 embedded in the box assembly 100, an air hole 220 opened at the bottom of the fixing seat 210, a ventilation plate 270 vertically embedded in the fixing seat 210, a heat dissipation port 230 opened at the bottom of the box assembly 100, a filter plate 240 installed on the outside of the heat dissipation port 230, and a filter plate 240 embedded at the top of the box assembly 100 and connected to the ventilation plate 270. The connected air storage box 250 and the air pump 260 connected to the air storage box 250 can use the air pump 260 to suck the outside air from the heat dissipation port 230, the air hole 220, and the ventilation plate 270 into the air storage box 250 through the heat dissipation component 200, absorb the heat in each group of liquid cooling boxes, and then use the air pump 260 to discharge the hot air flow from the ventilation plate 270 of another group to the heat dissipation port 230, and then discharge it. At the same time, when discharging, the heat around the other group of ventilation plates 270 can also be taken out, so as to realize circulating air cooling. This solution can control the amount of inlet and outlet air, and the design is reasonable.

[0026] Further, the filtering mechanism includes a protective plate 310 fixed to the top of the heat dissipation port 230, an electric telescopic rod 320 fixed to the middle of the protective plate 310, a filter plate 330 inserted into the driving end of the electric telescopic rod 320, a filter hole 340 provided on the filter plate 330, a torsion spring shaft 350 fixed to both ends of the filter hole 340, a movable plate 360 ​​fixed to the torsion spring shaft 350, a guide groove 370 provided at the bottom of the box seat 110 for the movable plate 360 ​​to be clamped, and a top rod 370 fixed to the bottom of the filter plate 330. 80, the filter plate 1 240 and the filter plate 2 330 can be used to perform double filtering on the incoming air. When air cooling is not needed, the electric telescopic rod 320 pushes the filter plate 2 330 to move downward, so that the filter plate 2 330 is pressed on the filter plate 1 240. The filter holes 340 and the filter holes on the filter plate 1 240 are staggered. The filter holes 340 and the filter holes on the filter plate 1 240 are staggered to avoid the entry of outside air and play a sealing role. In addition, the top rod 380 can enter the filter holes on the filter plate 1 240 to clean the filtered matter outside the filter plate 1 240, which is highly practical.

[0027] Furthermore, the fixing base 210 includes an L-shaped plate structure arranged around the side of the box assembly 100 and a plate structure arranged in the middle of the bottom surface of the box assembly 100. The fixing base 210 can be used as a base for the battery pack, allowing heat dissipation airflow to pass through, and has good stability and strength.

[0028] On the other hand, the air hole 220 is provided with filter cotton 221, which can further improve the filtering effect of the incoming airflow and prevent dirt from entering the air storage box 250, thereby having high practicality.

[0029] Furthermore, the bottom of the battery pack 150 is also provided with a liquid cooling box 151 located on the side of the air hole 220 and the heat dissipation port 230. The liquid cooling box 151 can improve the heat dissipation effect on the bottom of the battery pack 150, and then discharge the heat from the air hole 220.

[0030] It should be noted that a support frame 271 is inserted into the ventilation plate 270, and the support frame 271 can improve the structural strength of the box without affecting the passage of airflow.

[0031] Furthermore, a heat sink 251 is provided at the bottom of the air storage box 250, and a liquid cooling box 252 is provided below the heat sink 251. The heat above the battery pack 150 can be dissipated through the heat sink 251 and the liquid cooling box 252. The air can be properly stored in the air storage box 250 and can also be discharged in time according to the heat dissipation requirements.

[0032] Furthermore, a filter screen 331 is fixed to the bottom of the filter plate 2 330 , and the air passing through the filter plate 1 240 can be further filtered by the filter screen 331 , thereby improving the filtering effect of the air entering.

[0033] The working principle and use process of the present invention are as follows: when heat dissipation is required, the air pump 260 is first used to suck the outside air from the heat dissipation port 230, the air hole 220, and the ventilation plate 270 into the air storage box 250 to absorb the heat in each group of liquid cooling boxes, and then the air pump 260 is used to discharge the hot air flow from the ventilation plate 270 of another group to the heat dissipation port 230, and then discharge it. At the same time, the heat around the other group of ventilation plates 270 can also be taken out during the discharge, so as to realize circulating air cooling. During the heat dissipation process, the filter plate 1 240 and the filter plate 2 330 are used to perform double filtering on the incoming air. When air cooling is not required, the electric telescopic rod 320 pushes the filter plate 2 330 to move downward, so that the filter plate 2 330 is pressed on the filter plate 1 240, and the filter hole 340 is staggered with the filter hole on the filter plate 1 240, so as to avoid the entry of outside air and play a sealing role, and the top rod 380 can enter the filter hole on the filter plate 1 240 to clean the filter on the outside of the filter plate 1 240.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An integrated liquid-cooled battery pack box, characterized in that: include: A box assembly (100) and a heat dissipation assembly (200) arranged on the box assembly (100); The heat dissipation component (200) comprises an air cooling mechanism disposed around the box component (100) and a filtering mechanism disposed at the bottom of the box component (100); The air cooling mechanism comprises a fixing seat (210) embedded in the box assembly (100), an air hole (220) opened at the bottom of the fixing seat (210), a ventilation plate (270) vertically embedded in the fixing seat (210), a heat dissipation port (230) opened at the bottom of the box assembly (100), a filter plate 1 (240) installed on the outside of the heat dissipation port (230), an air storage box (250) embedded in the top of the box assembly (100) and connected to the ventilation plate (270), and an air pump (260) connected to the air storage box (250); The filtering mechanism comprises a protective plate (310) fixed to the top of the heat dissipation port (230), an electric telescopic rod (320) fixed to the middle of the protective plate (310), a second filter plate (330) inserted into the driving end of the electric telescopic rod (320), a filter hole (340) provided on the second filter plate (330), a torsion spring shaft (350) fixed to both ends of the filter hole (340), a movable plate (360) fixed to the torsion spring shaft (350), a guide groove (370) provided at the bottom of the box assembly (100) for the movable plate (360) to be clamped, and a top rod (380) fixed to the bottom of the second filter plate (330).

2. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: The box assembly (100) comprises a box seat (110), a fixing frame (120) embedded in the box seat (110), a box cover (130) mounted on the top of the box seat (110), a liquid cooling box (140) arranged inside the box seat (110), and a battery pack (150) placed inside the liquid cooling box (140).

3. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: The fixing seat (210) comprises an L-shaped plate structure arranged around the side of the box assembly (100) and a plate structure arranged in the middle of the bottom surface of the box assembly (100).

4. The integrated liquid-cooled battery pack box according to claim 3, characterized in that: Filter cotton (221) is arranged in the air hole (220).

5. The integrated liquid-cooled battery pack box according to claim 2, characterized in that: The bottom of the battery pack (150) is also provided with a second liquid cooling box (151) located on the side of the air hole (220) and the heat dissipation port (230).

6. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: A support frame (271) is inserted into the ventilation plate (270).

7. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: A heat sink (251) is provided at the bottom of the air storage box (250), and a liquid cooling box (252) is provided below the heat sink (251).

8. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: A filter screen (331) is fixed at the bottom of the second filter plate (330).

9. The integrated liquid-cooled battery pack box according to claim 1, characterized in that: The filter holes (340) are arranged in an alternating manner with the filter holes on the first filter plate (240).

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