Lightweight heat dissipation device of new energy automobile battery box

Abstract

This utility model discloses a lightweight heat dissipation device for a new energy vehicle battery box, relating to the field of automotive battery technology. It includes a battery body with a heat-conducting plate below it and a protective base plate below the heat-conducting plate. This utility model uses a heat-conducting plate, a protective base plate, heat-conducting fins, and extended fins. The heat-conducting plate and the protective base plate are stacked and installed below the battery body to form a heat dissipation structure. The heat from the battery body is transferred to the heat-conducting fins and extended fins through the heat-conducting plate. During vehicle operation, air passes between the heat-conducting plate and the protective base plate, exchanging heat with the heat-conducting fins and extended fins, thereby achieving heat dissipation and cooling of the battery body. Compared to existing technologies, this solution guides air through the heat-conducting plate and the protective base plate for heat dissipation, eliminating the need for cooling fans and other structures. Furthermore, its overall thickness is thinner, facilitating its placement under the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of automotive battery technology, and in particular to a lightweight heat dissipation device for a new energy vehicle battery box. Background Technology

[0002] New energy vehicles are powered by batteries. A large number of battery modules are installed in the chassis of the car. During driving, the batteries will generate a lot of heat. If the batteries cannot be effectively cooled, it will not only accelerate the consumption of electrical energy, but may also cause the batteries to catch fire and explode.

[0003] In the prior art, such as the new energy battery vehicle housing with good heat dissipation (publication number CN216450726U), specifically relating to the field of new energy battery technology, a housing is included. The battery is placed inside the housing, and a fixed cover is hinged to one side of the housing. The fixed cover has a placement groove inside, and a fixed frame is slidably connected inside the placement groove. Multiple primary coolant pipes are placed inside the fixed frame, and two through slots are formed on the upper surface of the fixed cover. This invention absorbs heat from the battery through multiple primary coolant pipes while simultaneously dissipating heat from the inside of the housing through the activation of a cooling fan, thus cooling the surface of the battery. Secondary coolant pipes absorb heat from the housing itself. Since the battery is placed inside the housing, when the battery itself generates heat, the heat is transferred to the housing, and the secondary coolant pipes cool the heat absorbed by the housing, thereby improving the heat dissipation effect on the battery.

[0004] The above technical solution has some problems in practical application. The technical solution dissipates heat from the battery by setting up structures such as cooling fans. However, since the batteries of new energy vehicles are generally installed at the bottom of the car, the design of structures such as cooling fans will make the car battery heavy and inconvenient to place at the bottom of the car.

[0005] Therefore, it is necessary to invent a lightweight heat dissipation device for the battery box of new energy vehicles to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a lightweight heat dissipation device for the battery box of a new energy vehicle, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight heat dissipation device for a new energy vehicle battery box, comprising a battery body, a heat-conducting plate below the battery body, a protective base plate below the heat-conducting plate, a wind guide plate rotatably mounted on one end of the protective base plate via a pin, a plurality of horizontally distributed heat-conducting fins fixedly mounted on the lower surface of the heat-conducting plate, the plurality of heat-conducting fins being perpendicular to the wind guide plate, the bottom ends of the plurality of heat-conducting fins being in contact with the upper surface of the protective base plate, and an inclined portion being provided at one end of the plurality of heat-conducting fins near the wind guide plate, a drive motor fixedly mounted on the middle of the upper surface of the wind guide plate, an adjusting screw fixedly mounted on the output shaft of the drive motor, a screw sleeve slidably mounted on the middle of the adjusting screw, transmission rods fixedly mounted on both sides of the screw sleeve, a transmission plate fixedly mounted on one end of each of the two transmission rods, a transmission shaft rotatably mounted on the top of each of the two transmission plates, and the transmission shaft being fixedly mounted on one end of the lower surface of the heat-conducting plate.

[0008] Preferably, a fixing block is fixedly provided at one end of the upper surface of the air guide plate, the adjusting screw is rotatably provided on one side of the fixing block, and the side of the fixing block away from the protective base plate is provided with an arc-shaped structure.

[0009] Preferably, the lower surface of the protective base plate is provided with multiple air outlets, and all the air outlets are designed as strip structures.

[0010] Preferably, the outer side walls of both the heat-conducting plate and the protective base plate are fixedly provided with multiple connecting ears, and each of the multiple connecting ears is provided with a through hole in the middle.

[0011] Preferably, each of the multiple connecting ears has a detachable mounting bolt inside the through hole in the middle, and the lower surface of the battery body has multiple screw holes that are compatible with the mounting bolts.

[0012] Preferably, an inclined extension fin is provided between the plurality of heat-conducting fins, and a gap is provided between the top end of the extension fin and the lower surface of the heat-conducting plate.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model provides a heat dissipation structure by setting a heat-conducting plate, a protective base plate, heat-conducting fins, and extended fins. The heat-conducting plate and the protective base plate are stacked and installed below the battery body to form a heat dissipation structure. The heat of the battery body is transferred to the heat-conducting fins and extended fins through the heat-conducting plate. During the driving process, the air passes between the heat-conducting plate and the protective base plate and exchanges heat with the heat-conducting fins and extended fins, thereby achieving heat dissipation and cooling of the battery body. Compared with the prior art, this technical solution dissipates heat by guiding air through the heat-conducting plate and the protective base plate, eliminating the need for structures such as cooling fans, making the device lighter and thinner overall, which facilitates its placement under the car.

[0015] 2. This utility model features an air guide plate located at one end of the protective base plate and capable of rotation. By controlling the rotation of the air guide plate, the air intake between the heat-conducting plate and the protective base plate can be adjusted. When the battery body is used in a low-temperature environment, the air guide plate can be rotated upward to reduce heat dissipation. When the battery body is used in a high-temperature environment, the air guide plate can be rotated downward to increase heat dissipation. The rotatable design of the air guide plate improves the device's control range over the battery body temperature, thus facilitating the efficient use of the battery body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an exploded view of the overall structure of this utility model.

[0018] Figure 3 This is a side view of the overall structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the heat-conducting plate structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the protective base plate structure of this utility model.

[0021] In the diagram: 1. Battery body; 2. Heat-conducting plate; 3. Protective base plate; 4. Air guide plate; 5. Heat-conducting fins; 6. Inclined part; 7. Extended fins; 8. Drive motor; 9. Adjusting screw; 10. Screw sleeve; 11. Transmission rod; 12. Transmission plate; 13. Transmission shaft; 14. Fixing block; 15. Air outlet; 16. Connecting ear; 17. Mounting bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 1-5The lightweight heat dissipation device for a new energy vehicle battery box includes a battery body 1, a heat-conducting plate 2 below the battery body 1, a protective base plate 3 below the heat-conducting plate 2, a guide plate 4 rotatably mounted on one end of the protective base plate 3 via a pin, a plurality of horizontally distributed heat-conducting fins 5 fixed on the lower surface of the heat-conducting plate 2, and the plurality of heat-conducting fins 5 are all vertically arranged with the guide plate 4, the bottom ends of the plurality of heat-conducting fins 5 are all attached to the upper surface of the protective base plate 3, and an inclined part 6 is provided at the end of the plurality of heat-conducting fins 5 near the guide plate 4, the inclined part 6 facilitates the attachment of the guide plate 4 and the heat-conducting fins 5;

[0024] A drive motor 8 is fixedly installed in the middle of the upper surface of the air guide plate 4. An adjusting screw 9 is fixedly installed on the output shaft of the drive motor 8. A screw sleeve 10 is slidably installed in the middle of the adjusting screw 9. A transmission rod 11 is fixedly installed on both sides of the screw sleeve 10. A transmission plate 12 is fixedly installed at one end of each of the two transmission rods 11. A transmission shaft 13 is rotatably installed at the top of the two transmission plates 12. The transmission shaft 13 is fixedly installed at one end of the lower surface of the heat conduction plate 2. It should be noted that the drive motor 8 is equipped with a battery, controller and other structures. The drive motor 8 is used to provide power for the rotation of the air guide plate 4.

[0025] A fixing block 14 is fixedly provided on one end of the upper surface of the air guide plate 4. The adjusting screw 9 is rotatably located on one side of the fixing block 14, and the side of the fixing block 14 away from the protective base plate 3 is designed with an arc shape. The arc shape design can reduce the wind resistance of the fixing block 14.

[0026] The lower surface of the protective base plate 3 is provided with multiple air outlets 15, and all the air outlets 15 are designed as strip structures. The air outlets 15 are used to assist in exhaust to improve the heat dissipation efficiency of the device.

[0027] Multiple connecting ears 16 are fixedly provided on the outer side walls of the heat-conducting plate 2 and the protective base plate 3, and each of the multiple connecting ears 16 has a through hole in the middle. Each of the multiple connecting ears 16 has a detachable mounting bolt 17 in the through hole. Multiple screw holes that are compatible with the mounting bolt 17 are opened on the lower surface of the battery body 1. It should be noted that when it is inconvenient to machine screw holes on the lower surface of the battery body 1, nuts can be directly welded to the lower surface of the battery body 1 to facilitate the installation of the heat-conducting plate 2 and the protective base plate 3.

[0028] An inclined extension fin 7 is provided between multiple heat-conducting fins 5, and a gap is provided between the top of the extension fin 7 and the lower surface of the heat-conducting plate 2. Some air is guided by the inclined extension fin 7 to move obliquely upward and pass through multiple extension fins 7 in sequence, while some air moves obliquely downward and is discharged through the air outlet 15. The dispersed discharge of air can improve the efficiency of air passing between the heat-conducting plate 2 and the protective base plate 3, thereby improving the heat dissipation efficiency of the device.

[0029] Working principle of this utility model:

[0030] When this device is in use, the heat-conducting plate 2 and the protective base plate 3 are fixed to the lower surface of the battery body 1 by mounting bolts 17, and the heat-conducting plate 2 is in contact with the lower surface of the battery body 1. When the battery body 1 is in use, it moves with the car. During this process, the heat-conducting plate 2 and the protective base plate 3 move horizontally relative to the ground. Air enters between the heat-conducting plate 2 and the protective base plate 3 under the guidance of the air guide plate 4. At this time, the heat generated by the battery body 1 is transferred to the heat-conducting plate 2 and the heat-conducting fins 5 through heat transfer. The flowing air comes into contact with the heat-conducting fins 5 as it passes between the heat-conducting plate 2 and the protective base plate 3. The heat-conducting fins 5 exchange heat with the air and expel the heat. During this process, some air is guided by the inclined extension fins 7 to move obliquely upward and passes through multiple extension fins 7 in sequence. Some air moves obliquely downward and then passes through the air outlet 15 and is discharged. During this process, the air carries away the heat from the heat-conducting plate 2 and the battery body 1 to achieve heat dissipation and cooling of the battery body 1.

[0031] When the battery body 1 is used in a low-temperature environment, it is necessary to reduce the heat dissipation of the device to ensure that the battery body 1 is at a suitable temperature. At this time, the drive motor 8 is controlled to drive the adjusting screw 9 to rotate. The adjusting screw 9 drives the screw sleeve 10 to slide horizontally. The screw sleeve 10 drives the air guide plate 4 to move through the transmission rod 11, the transmission plate 12 and the transmission shaft 13, so that the air guide plate 4 rotates towards the heat conduction plate 2. At this time, the gap between the air guide plate 4 and the heat conduction plate 2 becomes smaller. At this time, the amount of air entering between the heat conduction plate 2 and the protective base plate 3 is reduced, and the heat dissipation of the device is reduced. When the battery body 1 is used in a high-temperature environment, it is necessary to increase the heat dissipation of the device to avoid the battery body 1 from overheating. At this time, the drive motor 8 is controlled to rotate so that the air guide plate 4 rotates away from the heat conduction plate 2. At this time, the gap between the air guide plate 4 and the heat conduction plate 2 becomes larger. The amount of air entering between the heat conduction plate 2 and the protective base plate 3 is increased, and the heat dissipation of the device is increased.

[0032] It should be noted that the battery body 1 adopts the existing structure in the prior art, and has a liquid cooling system inside. In this embodiment, heat dissipation is assisted by adding a heat conduction plate 2 and a protective base plate 3 below the battery body 1. This embodiment is only applicable to the heat dissipation of the battery body 1 during the driving process. When the car is parked, the battery body 1 dissipates heat through its internal liquid cooling system.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight heat dissipation device for a new energy vehicle battery box, comprising a battery main body (1), characterized in that: A heat-conducting plate (2) is provided below the battery body (1), and a protective base plate (3) is provided below the heat-conducting plate (2). A guide plate (4) is rotatably provided at one end of the protective base plate (3) via a pin. A plurality of horizontally distributed heat-conducting fins (5) are fixedly provided on the lower surface of the heat-conducting plate (2), and the plurality of heat-conducting fins (5) are all arranged perpendicularly to the guide plate (4). The bottom ends of the plurality of heat-conducting fins (5) are all attached to the upper surface of the protective base plate (3), and an inclined portion (6) is provided at one end of the plurality of heat-conducting fins (5) near the guide plate (4). A drive motor (8) is fixedly provided in the middle of the upper surface of the air guide plate (4). An adjusting screw (9) is fixedly provided on the output shaft of the drive motor (8). A screw sleeve (10) is slidably provided in the middle of the adjusting screw (9). A transmission rod (11) is fixedly provided on both sides of the screw sleeve (10). A transmission plate (12) is fixedly provided at one end of each of the two transmission rods (11). A transmission shaft (13) is rotatably provided at the top of each of the two transmission plates (12). The transmission shaft (13) is fixedly provided at one end of the lower surface of the heat conduction plate (2).

2. The lightweight heat dissipation device for a new energy vehicle battery box according to claim 1, characterized in that: A fixing block (14) is fixedly provided on one end of the upper surface of the air guide plate (4). The adjusting screw (9) is rotatably provided on one side of the fixing block (14), and the side of the fixing block (14) away from the protective base plate (3) is set with an arc structure.

3. A lightweight heat dissipation device for a new energy vehicle battery box according to claim 1, characterized in that: The lower surface of the protective base plate (3) is provided with multiple air outlets (15), and all the air outlets (15) are designed as strip structures.

4. A lightweight heat dissipation device for a new energy vehicle battery box according to claim 1, characterized in that: The outer walls of the heat-conducting plate (2) and the protective base plate (3) are both fixed with multiple connecting ears (16), and the middle of each of the multiple connecting ears (16) is provided with a through hole.

5. A lightweight heat dissipation device for a new energy vehicle battery box according to claim 4, characterized in that: Each of the multiple connecting ears (16) has a detachable mounting bolt (17) in the middle of the through hole, and the lower surface of the battery body (1) has multiple screw holes that are compatible with the mounting bolt (17).

6. A lightweight heat dissipation device for a new energy vehicle battery box according to claim 1, characterized in that: An inclined extension fin (7) is provided between the plurality of heat-conducting fins (5), and a gap is provided between the top of the extension fin (7) and the lower surface of the heat-conducting plate (2).

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