New energy automobile power battery cooling device

Abstract

The invention discloses a new energy automobile power battery cooling device which comprises a battery box, a circumferential air cooling frame is installed in the battery box in an embedded mode, a supporting assembly is fixed to the inner wall of the circumferential air cooling frame, and automatic air outlet holes are formed in the rear end of the bottom of the battery box. An air outlet channel is connected to the edge of the top of the automatic air outlet hole in a penetrating mode, mud blocking assemblies, filtering plates and blocking sealing plates are fixed in the automatic air inlet hole and the automatic air outlet hole correspondingly, the blocking sealing plates are installed in cavities in the side walls of the automatic air inlet hole and the automatic air outlet hole in an attached and sliding mode, and the waterproof assembly is installed at the bottom of the battery box. And the cold and heat adjusting assembly is mounted in the bottom of the battery box in an embedded manner. According to the new energy automobile power battery cooling device, heat dissipation is conducted on an internal battery by means of advancing of an automobile, and meanwhile the functions of shock absorption, water prevention and supercooling protection are achieved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle power battery technology, specifically a cooling device for new energy vehicle power batteries. Background Technology

[0002] New energy vehicles are powered primarily by electricity. To protect the power battery, most new energy vehicles use battery boxes for securing and protection. However, in this enclosed environment, the battery heat gradually increases with vehicle use. To protect the battery and improve its safety, a battery cooling device is typically required. However, existing battery cooling devices have the following problems in use: In existing technologies, most power battery cooling devices use air cooling and circulating water cooling. However, traditional air cooling and circulating water cooling methods are not convenient for achieving stable cooling without power and generally require additional drive equipment. For example, air cooling requires a motor to drive the fan, and circulating water cooling requires the use of a water pump. The use of these additional drive equipment will increase power consumption and affect battery range. In addition, the additional drive equipment will generate additional heat, forcing the drive equipment to deal with the heat of the battery while also dealing with its own heat, which can easily lead to a deterioration in cooling effect.

[0003] To address the aforementioned issues, there is an urgent need for innovative designs based on existing power battery cooling devices. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling device for power batteries of new energy vehicles, so as to solve the problem that existing power battery cooling devices mentioned in the background are inconvenient to achieve stable cooling without power. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cooling device for a power battery of a new energy vehicle, including a battery box, a circumferential air-cooling frame embedded in the battery box, a support component fixed on the inner wall of the circumferential air-cooling frame, and a circumferential air-cooling hole through the inner wall of the circumferential air-cooling frame, and a power battery body placed inside the circumferential air-cooling frame. It also includes an automatic air inlet, which is located at the front end of the bottom of the battery box, and an automatic air outlet is located at the rear end of the bottom of the battery box. An air outlet channel is connected through the top edge of the automatic air outlet, and the air outlet channel is located inside the rear side wall of the battery box. The top of the air outlet channel is located above the circumferential air-cooling frame. Mud baffles and filter plates are fixed inside both the automatic air inlet and the automatic air outlet, and the filter plate is located above the mud baffles. A blocking plate is slidably installed in the side wall cavity of the automatic air inlet and the automatic air outlet, and the top protruding part of the blocking plate is installed in the side wall cavity of the automatic air inlet and the automatic air outlet through a first elastic telescopic rod. A waterproof component is installed at the bottom of the battery box and is located in front of the automatic air inlet and automatic air outlet. The waterproof component is used to prevent water from the road surface from entering the automatic air inlet and automatic air outlet. A temperature regulation component is embedded inside the bottom of the battery box and is located in front of the automatic air inlet and automatic air outlet. The temperature regulation component is used to adjust the position of the blocking plate.

[0006] Preferably, the circumferential air-cooling frame is designed with a hollow structure, and the interior of the circumferential air-cooling frame is connected to the automatic air inlet.

[0007] Preferably, the support assembly includes a support base, which is fixed to the inner wall of the circumferential air-cooled frame. A telescopic column is connected to the cavity at the top edge of the support base via a support spring. A shock-absorbing contact plate is fixed to the end of the telescopic column, and a first shock-absorbing magnetic sheet is fixed to the inner wall of the shock-absorbing contact plate. A second shock-absorbing magnetic sheet is fixed to the outer side of the support base.

[0008] Preferably, the support bases are evenly distributed in an array within the circumferential air-cooling frame, and the support bases and circumferential air-cooling holes are staggered. The first damping magnetic sheet and the second damping magnetic sheet are positioned opposite each other, and the first damping magnetic sheet and the second damping magnetic sheet are magnetically repulsive.

[0009] Preferably, the height of the automatic air outlet is higher than the height of the automatic air inlet, and the area around the bottom of the automatic air outlet is designed as a protruding arc-shaped structure.

[0010] Preferably, the mudguard assembly includes a mudguard frame and mudguard plates. The mudguard frame is fixed inside the automatic air inlet and automatic air outlet, and mudguard plates are fixed at equal intervals inside the mudguard frame, and the mudguard plates are inclined.

[0011] Preferably, the waterproof component includes a high-strength floating plate, which is disposed at the bottom of the battery box. A vertical mounting rod is fixed at the top edge of the front end of the high-strength floating plate, and the top of the vertical mounting rod is embedded in the bottom cavity of the battery box via a second elastic telescopic rod. An abutting lifting rod is fixed at the top edge of the rear end of the high-strength floating plate, and the abutting lifting rod slides in contact with the bottom cavity of the battery box, and the abutting lifting rod is located at the bottom edge of the blocking sealing plate.

[0012] Preferably, the top of the abutting lifting rod is designed as a right-angled trapezoidal structure, and the top slope of the abutting lifting rod is parallel and attached to the bottom slope of the front end of the blocking sealing plate.

[0013] Preferably, the temperature regulation assembly includes a temperature regulation airbag, which is embedded in a cavity inside the bottom of the battery box. The rear end of the temperature regulation airbag is connected to a first rack, which is slidably mounted inside the bottom of the battery box via a third elastic telescopic rod. The top of the first rack engages with an adjusting toothed roller, and the top of the adjusting toothed roller engages with a second rack. The rear end of the second rack abuts against the front end of the blocking plate.

[0014] Preferably, the temperature regulating airbag is sealed and filled with mercury, and the first rack at one end of the temperature regulating airbag drives the second rack to slide in the opposite direction through the adjusting toothed roller.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention is equipped with an automatic air inlet and an automatic air outlet. The bottom of the automatic air outlet has an arc-shaped protrusion structure. When the car is in motion, air circulates at the bottom. Utilizing Bernoulli's principle, external air can automatically enter the automatic air outlet. Together with the circumferential air-cooling frame, it can uniformly cool the power battery body in a circumferential manner. The air is then discharged through the automatic air outlet. Cooling of the power battery body can be completed without additional power. In contrast, in traditional technology, cooling is achieved by using a fan or circulating water cooling, which inevitably requires the use of a drive device. Although the use of a drive device can achieve cooling, the drive device itself generates additional heat, leading to an increase in internal heat. On the one hand, this increases energy consumption, and on the other hand, the increased heat also affects the cooling effect on the power battery body. 2. The present invention is equipped with a waterproof component. When a car is driving on a flooded road, the buoyancy will push the blocking plate to move, which will seal the automatic air inlet and automatic air outlet to prevent water from entering the interior. While achieving automatic cooling, it can also provide waterproof protection for the interior. 3. In this invention, a cooling and heating regulating component is set up. In some extremely cold climate areas, the thermal expansion and contraction characteristics of mercury in the cooling and heating regulating airbag can be used to move the blocking plate and seal the automatic air inlet and outlet to prevent cold air from entering the interior. On the basis of achieving automatic cooling, the impact of cold air on the range of the power battery body can be avoided. 4. In summary, the present invention can achieve unpowered cooling, waterproofing, and cold-weather regulation, effectively saving energy and improving the range of the power battery body. While supporting and increasing the cooling area through the support components, the support components can also provide a shock absorption effect to protect the power battery body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front section structure of the present invention; Figure 2 This is a schematic diagram of the supporting component structure of the present invention; Figure 3 This is a schematic cross-sectional view of the support component of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 5 This is a schematic diagram of the mudguard component structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the present invention; Figure 7 This is a schematic diagram of the structure of the heating and cooling control component of the present invention; Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Battery box; 2. Circumferential air-cooled frame; 21. Circumferential air-cooled hole; 3. Support assembly; 31. Support base; 32. Support spring; 33. Telescopic column; 34. Shock-absorbing contact plate; 35. First shock-absorbing magnetic sheet; 36. Second shock-absorbing magnetic sheet; 4. Power battery body; 5. Automatic air inlet; 6. Automatic air outlet; 7. Air outlet channel; 8. Mudguard assembly; 81. Mudguard frame; 82. Mudguard plate; 9. Filter plate; 10. First elastic telescopic rod; 11. Blocking sealing plate; 12. Waterproof assembly; 121. High-strength floating plate; 122. Vertical mounting rod; 123. Second elastic telescopic rod; 124. Anti-lifting rod; 13. Cooling and heating adjustment assembly; 131. Cooling and heating adjustment airbag; 132. First rack; 133. Third elastic telescopic rod; 134. Adjusting toothed roller; 135. Second rack. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 This invention provides a technical solution: a cooling device for a power battery of a new energy vehicle, comprising a battery box 1, a circumferential air-cooled frame 2, a circumferential air-cooled hole 21, a support assembly 3, a support base 31, a support spring 32, a telescopic column 33, a shock-absorbing contact plate 34, a first shock-absorbing magnetic sheet 35, a second shock-absorbing magnetic sheet 36, a power battery body 4, an automatic air inlet 5, an automatic air outlet 6, an air outlet channel 7, a mudguard assembly 8, a mudguard frame 81, a mudguard plate 82, a filter plate 9, a first elastic telescopic rod 10, a blocking sealing plate 11, a waterproof assembly 12, a high-strength floating plate 121, a vertical mounting rod 122, a second elastic telescopic rod 123, an anti-lifting rod 124, a heat and cold adjustment assembly 13, a heat and cold adjustment airbag 131, a first rack 132, a third elastic telescopic rod 133, an adjusting toothed roller 134, and a second rack 135.

[0020] The device includes a battery box 1, in which a circumferential air-cooled frame 2 is embedded. A support component 3 is fixed on the inner wall of the circumferential air-cooled frame 2, and a circumferential air-cooled hole 21 is opened through the inner wall of the circumferential air-cooled frame 2. The power battery body 4 is placed inside the circumferential air-cooled frame 2. The support component 3 of the circumferential air-cooled frame 2 supports the power battery body 4, so that there is a gap between the circumferential air-cooled frame 2 and the power battery body 4, so that the air blown out of the circumferential air-cooled hole 21 can uniformly cool the power battery body 4. An automatic air intake vent 5 is located at the front end of the bottom of the battery box 1, and an automatic air outlet vent 6 is located at the rear end of the bottom of the battery box 1. An air outlet channel 7 is connected through the top edge of the automatic air outlet vent 6, and the air outlet channel 7 is located inside the rear side wall of the battery box 1. The top of the air outlet channel 7 is located above the circumferential air-cooling frame 2. Mudslide assembly 8 and filter plate 9 are fixed inside both the automatic air intake vent 5 and the automatic air outlet vent 6, and the filter plate 9 is located above the mudslide assembly 8. When the vehicle is moving, external air enters the circumferential air-cooling frame 2 through the automatic air intake vent 5, and is then blown out through the circumferential air-cooling hole 21. It is discharged through the air outlet channel 7 and the automatic air outlet vent 6, realizing the circulation of internal air. At the same time, the use of the mudslide assembly 8 and the filter plate 9 prevents mud from entering the interior in rainy weather, and filters the air through the filter plate 9 to prevent dust from entering the interior. The blocking plate 11 is slidably installed in the side wall cavity of the automatic air inlet 5 and the automatic air outlet 6, and the top protruding part of the blocking plate 11 is installed in the side wall cavity of the automatic air inlet 5 and the automatic air outlet 6 through the first elastic telescopic rod 10; by using the blocking plate 11, the automatic air inlet 5 and the automatic air outlet 6 can be sealed to prevent water from entering the interior. The waterproof component 12 is installed at the bottom of the battery box 1 and is located in front of the automatic air inlet 5 and the automatic air outlet 6. The waterproof component 12 is used to prevent road surface water from entering the automatic air inlet 5 and the automatic air outlet 6. When the vehicle is driving in a waterlogged area, the waterproof component 12 can seal the barrier plate 11 to prevent road surface water from entering the automatic air inlet 5 and the automatic air outlet 6. The temperature regulation component 13 is embedded in the bottom of the battery box 1 and is located in front of the automatic air inlet 5 and the automatic air outlet 6. The temperature regulation component 13 is used to adjust the position of the blocking plate 11. In extremely cold weather, the temperature regulation component 13 can be used to close the blocking plate 11 to prevent cold air from entering the interior and affecting the range of the power battery body 4. The circumferential air-cooled frame 2 is designed with a hollow structure inside, and the interior of the circumferential air-cooled frame 2 is connected to the automatic air inlet 5, so that air can pass through the interior of the circumferential air-cooled frame 2 and be blown out through the automatic air inlet 5 to cool the power battery body 4. The support assembly 3 includes a support base 31, which is fixed to the inner wall of the circumferential air-cooled frame 2. A telescopic column 33 is connected to the cavity at the top edge of the support base 31 via a support spring 32. A shock-absorbing contact plate 34 is fixed to the end of the telescopic column 33, and a first shock-absorbing magnetic sheet 35 is fixed to the inner wall of the shock-absorbing contact plate 34. A second shock-absorbing magnetic sheet 36 is fixed to the outer side of the support base 31. The support bases 31 are evenly distributed in an array within the circumferential air-cooled frame 2, and the support bases 31 are staggered with the circumferential air-cooled holes 21. The first shock-absorbing magnetic sheet 35 and the second shock-absorbing magnetic sheet 36 are positioned opposite each other and are magnetically repulsive. The shock-absorbing contact plate 34 slides elastically on the support base 31 via the support spring 32. Combined with the repulsive force of the first shock-absorbing magnetic sheet 35 and the second shock-absorbing magnetic sheet 36, the shock absorption effect is improved, and the power battery body 4 is protected. The height of the automatic air outlet 6 is higher than that of the automatic air inlet 5, and the area around the bottom of the automatic air outlet 6 is designed with a protruding arc structure. With the use of the automatic air outlet 6 and the automatic air inlet 5, when the car is in motion, air circulates at the bottom of the battery box 1. Utilizing Bernoulli's principle, the pressure difference between the automatic air outlet 6 and the automatic air inlet 5 allows air to enter the interior and cool the power battery body 4. The mud-blocking assembly 8 includes a mud-blocking frame 81 and a mud-blocking plate 82. The mud-blocking frame 81 is fixed inside the automatic air inlet 5 and the automatic air outlet 6, and the mud-blocking plate 82 is fixed at equal intervals inside the mud-blocking frame 81, and the mud-blocking plate 82 is inclined. By using the mud-blocking plate 82, when the sludge splashes, it is blocked by the mud-blocking plate 82 and will not enter the interior. The waterproof component 12 includes a high-strength float 121, which is located at the bottom of the battery box 1. A vertical mounting rod 122 is fixed to the top edge of the front end of the high-strength float 121, and the top of the vertical mounting rod 122 is embedded in the bottom cavity of the battery box 1 via a second elastic telescopic rod 123. An abutting lifting rod 124 is fixed to the top edge of the rear end of the high-strength float 121, and the abutting lifting rod 124 slides in contact with the bottom cavity of the battery box 1. The abutting lifting rod 124 is located at the bottom edge of the blocking sealing plate 11. The top of the abutting lifting rod 124 is designed as a right-angled trapezoidal structure, and the top slope of the abutting lifting rod 124 is parallel and in contact with the bottom slope of the front end of the blocking sealing plate 11. When passing through a flooded road surface, the high-strength float 121 is lifted by force, pushing the blocking sealing plate 11 to move and seal the automatic air inlet 5 and the automatic air outlet 6 to prevent water from entering the interior. The temperature regulation assembly 13 includes a temperature regulation airbag 131, which is embedded in a cavity inside the bottom of the battery box 1. The rear end of the temperature regulation airbag 131 is connected to a first rack 132, and the first rack 132 is slidably mounted inside the bottom of the battery box 1 via a third elastic telescopic rod 133. The top of the first rack 132 engages with an adjusting toothed roller 134, and the top of the adjusting toothed roller 134 engages with a second rack 135. The rear end of the second rack 135 abuts against the front end of the blocking plate 11. The temperature regulation airbag 131 is sealed and filled with mercury, and the first rack 132 at one end of the temperature regulation airbag 131 drives the second rack 135 to slide in the opposite direction via the adjusting toothed roller 134. In extremely cold weather, the temperature regulation airbag 131 contracts, causing the blocking plate 11 to move and seal the automatic air inlet 5 and the automatic air outlet 6, preventing cold air from entering the interior.

[0021] Working principle: When using this new energy vehicle power battery cooling device, such as Figures 1-8In the process, when the car is in motion, high-speed airflow circulates at the bottom of the battery box 1 (the battery box 1 is installed in conjunction with the car floor). Due to the arc-shaped protrusion structure at the bottom of the automatic air vent 6, according to Bernoulli's principle, the pressure at the automatic air vent 6 decreases, allowing air to enter the automatic air intake vent 5 and then enter the internal cavity of the circumferential air-cooling frame 2, where it is discharged through the circumferential air-cooling holes 21. Supported by the support component 3, the external air can dissipate heat and cool the power battery body 4. The discharged air enters the automatic air vent 6 through the air outlet duct 7, realizing the circulation of air inside the battery box 1. At the same time, the mudguard component 8 inside the automatic air intake vent 5 and the automatic air vent 6 can prevent mud from entering the battery body during rainy weather. The system blocks splashed mud to prevent it from entering the battery box 1. At the same time, the filter plates 9 in the automatic air inlet 5 and automatic air outlet 6 can filter dust in the air to prevent dust from entering the battery box 1 and affecting the power battery body 4. When the car is bumpy, the support base 31 moves under force. When the power battery body 4 is supported by the shock-absorbing contact plate 34, the support spring 32 and telescopic column 33 can be used for initial shock absorption. At the same time, the repulsive force of the first shock-absorbing magnetic sheet 35 and the second shock-absorbing magnetic sheet 36 can be used for further shock absorption, thus protecting the power battery body 4. The support components 3 distributed around the circumferential air-cooled frame 2 can provide circumferential protection for the power battery body 4. During rainy weather, when a car drives onto a flooded road, the high-strength float 121 rises under pressure. The vertical mounting rod 122 compresses the second elastic telescopic rod 123, maintaining the stable buoyancy of the high-strength float 121. The second elastic telescopic rod 123 allows the high-strength float 121 to be reset and reused. When the high-strength float 121 rises, it causes the abutment lifting rod 124 to move upwards. The top inclined surface of the abutment lifting rod 124 contacts the end inclined surface of the blocking sealing plate 11, pushing the blocking sealing plate 11 towards the automatic air inlet 5 and the automatic... The automatic air inlet 6 moves in a certain direction, which closes the automatic air inlet 5 and the automatic air outlet 6, thus preventing rainwater from entering the automatic air inlet 5 and the automatic air outlet 6 and providing waterproof protection for the internal power battery body 4. When passing through a flooded road surface, the high-strength floating plate 121 resets to the left and right sides of the second elastic telescopic rod 123, so that the resisting lifting rod 124 loses its restrictive force on the blocking sealing plate 11. At this time, the blocking sealing plate 11 resets under the action of the first elastic telescopic rod 10, and the automatic air inlet 5 and the automatic air outlet 6 reopen for cooling. When a car is used in extremely cold winter regions, the mercury inside the thermostatic airbag 131 decreases in volume upon cooling, causing the airbag 131 to contract. This contraction of the airbag 131 moves the first rack 132, which in turn moves the second rack 135 in the opposite direction via the adjusting roller 134. This causes the second rack 135 to move towards the blocking plate 11, allowing the blocking plate 11 to extend into the automatic air intake 5 and the automatic air outlet 6, thus controlling the airflow. The air vent 6 is sealed to prevent cold air from entering the battery box 1, thus preventing the power battery body 4 from becoming too cold and affecting the battery range. Conversely, in a warmer area, the mercury in the temperature regulating airbag 131 expands due to heat, causing the temperature regulating airbag 131 to drive the second rack 135 to move in the opposite direction through the first rack 132 and the adjusting rack 134, losing the thrust on the blocking plate 11. The blocking plate 11 is then reset, and the automatic air inlet vent 5 and the automatic air outlet vent 6 open to allow air circulation.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling device for a power battery of a new energy vehicle, comprising a battery box (1), wherein a circumferential air-cooled frame (2) is embedded in the battery box (1), and a support component (3) is fixed on the inner wall of the circumferential air-cooled frame (2), and a circumferential air-cooled hole (21) is provided through the inner wall of the circumferential air-cooled frame (2), and a power battery body (4) is placed inside the circumferential air-cooled frame (2). Its features are: It also includes an automatic air inlet (5), which is located at the front end of the bottom of the battery box (1), and an automatic air outlet (6) is located at the rear end of the bottom of the battery box (1). An air outlet channel (7) is connected through the top edge of the automatic air outlet (6), and the air outlet channel (7) is located inside the rear side wall of the battery box (1). The top of the air outlet channel (7) is located above the circumferential air-cooled frame (2). A mudguard assembly (8) and a filter plate (9) are fixed inside both the automatic air inlet (5) and the automatic air outlet (6), and the filter plate (9) is located above the mudguard assembly (8). The blocking plate (11) is slidably installed in the side wall cavity of the automatic air inlet (5) and the automatic air outlet (6), and the top protruding position of the blocking plate (11) is installed in the side wall cavity of the automatic air inlet (5) and the automatic air outlet (6) through the first elastic telescopic rod (10); Waterproof component (12) is installed at the bottom of battery box (1) and is located in front of automatic air inlet (5) and automatic air outlet (6). Waterproof component (12) is used to prevent road surface water from entering the automatic air inlet (5) and automatic air outlet (6). The heating and cooling adjustment component (13) is embedded in the bottom of the battery box (1) and is located in front of the automatic air inlet (5) and the automatic air outlet (6). The heating and cooling adjustment component (13) is used to adjust the position of the blocking plate (11).

2. The cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The circumferential air-cooled frame (2) is designed with a hollow structure inside, and the interior of the circumferential air-cooled frame (2) is connected to the automatic air inlet (5).

3. The cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The support assembly (3) includes a support base (31), which is fixed on the inner wall of the circumferential air-cooled frame (2). A telescopic column (33) is connected to the cavity at the top edge of the support base (31) by a support spring (32). A shock-absorbing contact plate (34) is fixed at the end of the telescopic column (33), and a first shock-absorbing magnetic sheet (35) is fixed on the inner wall of the shock-absorbing contact plate (34). A second shock-absorbing magnetic sheet (36) is fixed on the outer side of the support base (31).

4. The cooling device for a new energy vehicle power battery according to claim 3, characterized in that: The support base (31) is evenly distributed in an array within the circumferential air-cooled frame (2), and the support base (31) and the circumferential air-cooled holes (21) are staggered. The first damping magnetic sheet (35) and the second damping magnetic sheet (36) are opposite to each other, and the first damping magnetic sheet (35) and the second damping magnetic sheet (36) are magnetically repulsive.

5. A cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The height of the automatic air outlet (6) is higher than the height of the automatic air inlet (5), and the area around the bottom of the automatic air outlet (6) is designed as a protruding arc structure.

6. A cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The mudguard assembly (8) includes a mudguard frame (81) and a mudguard plate (82). The mudguard frame (81) is fixed inside the automatic air inlet (5) and the automatic air outlet (6), and the mudguard plate (82) is fixed at equal intervals inside the mudguard frame (81), and the mudguard plate (82) is inclined.

7. A cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The waterproof component (12) includes a high-strength float plate (121), which is disposed at the bottom of the battery box (1). A vertical mounting rod (122) is fixed at the top edge of the front end of the high-strength float plate (121), and the top of the vertical mounting rod (122) is embedded in the bottom cavity of the battery box (1) through a second elastic telescopic rod (123). An abutting lifting rod (124) is fixed at the top edge of the rear end of the high-strength float plate (121), and the abutting lifting rod (124) slides in close contact within the bottom cavity of the battery box (1). The abutting lifting rod (124) is located at the bottom edge of the blocking sealing plate (11).

8. A cooling device for a new energy vehicle power battery according to claim 7, characterized in that: The top of the abutting lifting rod (124) is designed as a right-angled trapezoidal structure, and the top slope of the abutting lifting rod (124) is parallel and attached to the bottom slope of the front end of the blocking sealing plate (11).

9. A cooling device for a new energy vehicle power battery according to claim 1, characterized in that: The temperature regulation assembly (13) includes a temperature regulation airbag (131), which is embedded in the cavity inside the bottom of the battery box (1). The rear end of the temperature regulation airbag (131) is connected to a first rack (132), and the first rack (132) is slidably installed inside the bottom of the battery box (1) via a third elastic telescopic rod (133). The top of the first rack (132) is engaged with an adjusting toothed roller (134), and the top of the adjusting toothed roller (134) is engaged with a second rack (135). The rear end of the second rack (135) abuts against the front end of the blocking plate (11).

10. A cooling device for a new energy vehicle power battery according to claim 9, characterized in that: The temperature regulating airbag (131) is sealed and filled with mercury, and the first rack (132) at one end of the temperature regulating airbag (131) drives the second rack (135) to slide in the opposite direction through the adjusting rack (134).

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