A heat dissipation mechanism for a new energy automobile battery

Abstract

The application discloses a heat dissipation mechanism for a new energy automobile battery, and relates to the technical field of new energy automobile batteries. Batteries are installed in a box through a bottom mounting strip and a vertically fixed partition plate. A box cover is connected to the top of the box. An upper air inlet is formed through the box cover. A fan is installed in the upper half of the upper air inlet. The box cover is embedded in the lower half of the upper air inlet. A driving assembly is arranged on the top of the box cover. The driving assembly is used to push out the box cover. A liquid cooling box is arranged below the batteries. A lower air inlet is arranged at the bottom of the contact rod. The lower air inlet is formed through the bottom of the box. The heat dissipation mechanism for the new energy automobile battery is improved in heat dissipation efficiency through cooperation of liquid cooling and air cooling. When the temperature is high, air circulation is cut off, and the interior is extinguished.

Description

TECHNICAL FIELD

[0001] The application relates to a heat dissipation mechanism for a new energy automobile battery. BACKGROUND

[0002] The use of new energy automobiles mainly provides power through batteries and drives the vehicle body to move through motors, which is an innovative use of clean energy. In the operation process of the new energy automobile, the battery occupies an important part in the vehicle body, and a large amount of heat is generated during operation, so that the heat dissipation mechanism needs to be used for heat dissipation, so as to ensure the long-term safe operation of the battery. However, the existing heat dissipation mechanism has the following problems during use:

[0003] When the new energy automobile is used, the most concerned is the risk of spontaneous combustion after high heat. The existing heat dissipation mechanism is inconvenient for timely isolation and fire extinguishing treatment of the battery in the high-temperature area. On the one hand, due to the requirements of space and overall weight, adding too many fire extinguishing mechanisms is easy to affect the overall layout. On the other hand, the internal structure is relatively complex, and in order to ensure the pain, the isolation effect from the external air is poor, and it is difficult to reduce the entry of external oxygen in time, so that the fire range of the battery is easy to expand quickly.

[0004] In view of the above problems, it is urgent to make innovative design on the basis of the original. SUMMARY

[0005] The purpose of the present application is to provide a heat dissipation mechanism for a new energy automobile battery to solve the problem that the existing battery heat dissipation mechanism is inconvenient for timely isolation and fire extinguishing treatment of the battery in the high-temperature area. The technical scheme of the present application provides a solution significantly different from the prior art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a heat dissipation mechanism for a new energy automobile battery, comprising a box body, the box body is internally partitioned and mounted with batteries through a bottom mounting strip and a vertically fixed partition plate, a box cover is connected to the top of the box body, an upper air inlet is formed through the box cover, and a fan is mounted in the upper half of the upper air inlet;

[0007] It also includes a sealing box, the sealing box is embedded in the side wall cavity of the lower half of the upper air inlet, a driving assembly is arranged on the top of the sealing box, the driving assembly is used for pushing out the sealing box, a liquid cooling box is arranged below the battery, a bottom plate is arranged in the bottom cavity of the liquid cooling box, a contact rod is fixed to the bottom of the bottom plate, a lower air inlet is arranged at the bottom of the contact rod, the lower air inlet is formed through the bottom of the box body, and a limiting block is fixed to the inner wall of the lower air inlet.

[0008] A down-pressing assembly is arranged in the side wall of the box body and the partition plate, and is used to drive the liquid cooling box to move downward.

[0009] Preferably, temperature sensors are arranged at each partition in the box body, and a controller is installed in the box body.

[0010] Preferably, the cross section of the box is designed as a semicircular structure, and the two boxes are used to close the upper air outlet.

[0011] Preferably, the box is filled with sodium bicarbonate, and a low-temperature hot melt adhesive is fixed at the opening of the bottom of the box.

[0012] Preferably, the driving assembly comprises a gear installed in the box cover and driven by a motor, one side of the gear is engaged with a toothed disc, the bottom of the toothed disc is provided with a driving groove, a driving rod is arranged in the driving groove, and the driving rod is fixed to the top of the box.

[0013] Preferably, the driving rod slides in the driving groove, and the driving groove is designed as an inclined arc structure on the toothed disc.

[0014] Preferably, the liquid cooling box is provided with a liquid outlet hole at the top, and two rubber sheets are fixed in the liquid outlet hole and arranged in close contact with each other, and the two rubber sheets are used to initially seal the liquid outlet hole.

[0015] Preferably, the bottom plate slides in the liquid cooling box, and the abutting rod at the bottom of the bottom plate is in convex-concave cooperation with the lower air outlet.

[0016] Preferably, the down-pressing assembly comprises a down-pressing rod, the down-pressing rod is embeddedly vertically slid in the side wall of the box body and the partition plate through a spring, and the bottom of the down-pressing rod is connected with the outside of the liquid cooling box.

[0017] Preferably, the top of the down-pressing rod penetrates the box body and is located at the bottom of the outside of the box, and the bottom of the outside of the box is designed as an inclined surface structure.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. When the internal temperature is too high, the controller controls the motor to operate, the gear drives the toothed disc to rotate, and then the two boxes of the corresponding area are pushed out through the driving groove and the driving rod, the upper air outlet at the top is blocked by the two semicircular structure boxes, and the movement of the box pushes the down-pressing rod downward through the inclined surface, drives the liquid cooling box to move downward, makes the abutting rod enter the lower air outlet and block it, and then the upper and lower flow spaces in the corresponding partition are quickly blocked, avoiding the entry of external air, on the one hand, avoiding the spread of internal flame, and on the other hand, reducing the oxygen content in time to assist in fire extinguishing.

[0020] 2. The invention, the push-out of the sealing box, the low-temperature hot melt glue at the bottom opening is heated and melted, so that the sodium bicarbonate in the sealing box is exposed, and the sodium bicarbonate is decomposed into sodium carbonate, water and carbon dioxide by heating, and the water and carbon dioxide are in contact with the battery to cool and oxygen isolation, on the other hand, the lower movement of the liquid cooling box, the limiting of the limiting block makes the bottom plate stressed in the liquid cooling box relative to the upward movement, the internal liquid is squeezed out through the liquid outlet hole, and contacts with the bottom of the battery to cool and oxygen isolation, through the synchronous action of up and down position, greatly improve the internal fire extinguishing efficiency, at the same time, the use of sodium bicarbonate occupies less space, and no additional fire extinguishing parts are needed, which reduces the cost and improves the space utilization rate, and the bottom liquid cooling box can also squeeze out the internal liquid for fire extinguishing and cooling in the conventional use, which is multi-functional, further saves the cost and reduces the space occupation, and greatly improves the safety and cost performance of the whole vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the cross-sectional structure of the invention;

[0022] Figure 2 It is a schematic view of the cross-sectional structure of the invention; Figure 1 It is a schematic view of the enlarged structure at A in the invention;

[0023] Figure 3 It is a schematic view of the cross-sectional structure of the invention;

[0024] Figure 4 It is a schematic view of the cross-sectional structure of the invention;

[0025] Figure 5 It is a schematic view of the cross-sectional structure of the invention; Figure 1 It is a schematic view of the enlarged structure at B in the invention;

[0026] Figure 6 It is a schematic view of the cross-sectional structure of the invention;

[0027] Figure 7 It is a schematic view of the cross-sectional structure of the invention; Figure 6 It is a schematic view of the enlarged structure at C in the invention.

[0028] In the figure: 1, box; 101, partition plate; 2, battery; 3, box cover; 4, upper air inlet; 5, fan; 6, sealing box; 71, gear; 72, gear disc; 73, drive groove; 74, drive rod; 8, liquid cooling box; 81, liquid outlet hole; 82, rubber sheet; 9, bottom plate; 10, abutting rod; 11, lower air inlet; 12, limiting block; 131, pressing rod; 132, spring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0030] Please refer to Figures 1-7 The present application provides a technical solution: a heat dissipation mechanism for a new energy automobile battery, comprising a box body 1, a battery 2 is installed in the box body 1 through a bottom mounting strip and a vertically fixed partition plate 101, a box cover 3 is connected to the top of the box body 1, an upper air inlet 4 is provided through the box cover 3, and a fan 5 is installed in the upper half of the upper air inlet 4; the fan 5 operates to extract hot air inside the box body 1.

[0031] A liquid cooling tank 8 is arranged below the battery 2, a bottom plate 9 is installed in the bottom cavity of the liquid cooling tank 8, a contact rod 10 is fixed to the bottom of the bottom plate 9, a lower air inlet 11 is provided at the bottom of the contact rod 10, the lower air inlet 11 is provided through the bottom of the box body 1, and a limiting block 12 is fixed to the inner wall of the lower air inlet 11; an outlet hole 81 is provided through the top of the liquid cooling tank 8, two rubber sheets 82 are fixed in the outlet hole 81, and the two rubber sheets 82 are used for initial sealing of the outlet hole 81; a temperature sensor is arranged at each partition in the box body 1, and a controller is installed in the box body 1; the bottom plate 9 slides in the liquid cooling tank 8, and the contact rod 10 at the bottom of the bottom plate 9 is matched with the lower air inlet 11.

[0032] External air enters through the lower air inlet 11, passes through the liquid cooling tank 8, is delivered by an external liquid cooling system, and is cooled by the liquid cooling tank 8 to make the air pass through the battery 2 and be discharged from the top, so that the internal battery 2 is cooled by liquid cooling and air cooling.

[0033] As an embodiment of the present application, the sealing box 6 is embedded in the sidewall cavity of the lower half of the upper air inlet 4, a driving assembly is arranged at the top of the sealing box 6, the driving assembly is used for pushing out the sealing box 6, the top view of the sealing box 6 is designed as a semicircular structure, two sealing boxes 6 are used for closing the upper air inlet 4, the sealing box 6 is filled with sodium bicarbonate, and low-temperature hot melt glue is fixed at the opening of the bottom of the sealing box 6; the driving assembly comprises a gear 71 driven by a motor and installed in the box cover 3, a gear plate 72 engaged with one side of the gear 71, a driving groove 73 provided at the bottom of the gear plate 72, and a driving rod 74 provided in the driving groove 73 and fixed to the top of the sealing box 6; the driving rod 74 slides in the driving groove 73, and the driving groove 73 is arranged as an inclined arc structure on the gear plate 72.

[0034] When the temperature sensor detects that the temperature in the corresponding area is too high, the motor is controlled to operate by the controller, the gear 71 is driven to rotate by the motor, and then the gear disc 72 is driven to rotate, the box 6 is pushed out through the driving groove 73 and the driving rod 74, so that the two boxes 6 close the upper air inlet 4, and the fan 5 is controlled to stop running. After the box 6 is pushed out, the low-temperature hot melt glue at the bottom opening is melted by heat, so that the internal sodium bicarbonate is exposed to heat, and the sodium bicarbonate is decomposed into sodium carbonate, water and carbon dioxide. By contacting the battery 2 with water and carbon dioxide, the top of the battery 2 is isolated and cooled, achieving the function of fire extinguishing and cooling.

[0035] As an embodiment of the present application, a pressing assembly is arranged in the side wall of the box body 1 and the partition plate 101, and the pressing assembly is used to drive the liquid cooling box 8 to move downward. The pressing assembly comprises a pressing rod 131 which is vertically embedded and slid in the side wall of the box body 1 and the partition plate 101 through a spring 132, and the bottom of the pressing rod 131 is connected with the outside of the liquid cooling box 8. The top of the pressing rod 131 penetrates the box body 1 and is located at the bottom outside of the box 6, and the bottom outside of the box 6 is designed as a slope structure.

[0036] When the box 6 is pushed out, the pressing rod 131 is pushed downward by the slope at the bottom of the box 6, and the liquid cooling box 8 is driven to move downward by the downward movement of the pressing rod 131, so that the bottom plate 9 and the abutting rod 10 move downward, the abutting rod 10 enters the lower air inlet 11 to block it, and then the internal space is isolated from the outside to avoid air entering. When the liquid cooling box 8 continues to move downward, the abutting rod 10 is forced to drive the bottom plate 9 to move upward relatively in the liquid cooling box 8, the liquid in the liquid cooling box 8 is pressed to push away the rubber sheet 82, and the liquid flows into the bottom of the battery 2 through the liquid outlet hole 81, and the liquid isolates the air at the bottom of the battery 2.

[0037] Working principle: in use, the fan 5 operates to exhaust the hot air in the box body 1, and the outside air enters through the lower air inlet 11, passes through the liquid cooling box 8, and is cooled by the external liquid cooling delivery system. The air passes through the battery 2 and is discharged from the top, and the internal battery 2 is cooled by liquid cooling and air cooling. When the temperature sensor detects that the temperature in the corresponding area is too high, the motor is controlled to operate by the controller, the gear 71 is driven to rotate by the motor, and then the gear disc 72 is driven to rotate, the box 6 is pushed out through the driving groove 73 and the driving rod 74, so that the two boxes 6 close the upper air inlet 4, and the fan 5 is controlled to stop running. When the box 6 is pushed out, the pressing rod 131 is pushed downward by the slope at the bottom of the box 6, and the liquid cooling box 8 is driven to move downward by the downward movement of the pressing rod 131, so that the bottom plate 9 and the abutting rod 10 move downward, the abutting rod 10 enters the lower air inlet 11 to block it, and then the internal space is isolated from the outside to avoid air entering.

[0038] When the contact bar 10 enters the lower air port 11 and contacts the limiting block 12, the contact bar 10 is forced to drive the bottom plate 9 to move upward in the liquid cooling box 8 when the liquid cooling box 8 continues to move downward. The liquid in the liquid cooling box 8 is forced to push away the rubber sheet 82 and flow into the bottom of the battery 2 through the liquid outlet hole 81, so as to isolate the air at the bottom of the battery 2 by the liquid. After the box cover 6 is pushed out, the low-temperature hot melt glue at the bottom opening of the box cover 6 is melted by heat, so that the internal sodium bicarbonate is exposed and heated, and the sodium bicarbonate is decomposed into sodium carbonate, water and carbon dioxide by heat. The water and carbon dioxide contact the battery 2 to isolate and cool the top of the battery 2, so as to realize the fire extinguishing and cooling function.

[0039] In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specified; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A heat dissipation mechanism for new energy automobile battery, comprising a box body (1), the battery (2) is installed in the box body (1) through the bottom mounting strip and the vertically fixed partition plate (101), the top of the box body (1) is connected with the box cover (3), the upper air inlet (4) is formed in the box cover (3), the upper half of the upper air inlet (4) is installed with the fan (5); characterized in that It also includes the sealing box (6), the sealing box (6) is embedded in the lower half of the sidewall cavity of the upper air inlet (4), the top of the sealing box (6) is provided with a driving assembly, the driving assembly is used for pushing out the sealing box (6), the bottom of the battery (2) is provided with a liquid cooling box (8), the bottom of the liquid cooling box (8) is provided with a bottom plate (9), the bottom of the bottom plate (9) is fixed with a contact rod (10), the bottom of the contact rod (10) is provided with a lower air inlet (11), the lower air inlet (11) is formed in the bottom of the box body (1), the inner wall of the lower air inlet (11) is fixed with a limiting block (12), the top view of the sealing box (6) is designed as a semicircular structure, two sealing boxes (6) are used for closing the upper air inlet (4), the sealing box (6) is filled with sodium bicarbonate, the bottom opening of the sealing box (6) is fixed with low-temperature hot melt adhesive, the bottom plate (9) is attached to the liquid cooling box (8), and the contact rod (10) at the bottom of the bottom plate (9) is matched with the lower air inlet (11). The lower pressing assembly is arranged in the sidewall of the box body (1) and the partition plate (101), and is used for driving the liquid cooling box (8) to move downward.

2. The heat dissipation mechanism for a new energy vehicle battery according to claim 1, characterized in that: The bottom of the bottom plate (9) is fixed with a contact rod (10), and the bottom of the contact rod (10) is provided with a lower air inlet (11).

3. The heat dissipation mechanism for a new energy vehicle battery according to claim 1, characterized in that: The box body (1) is provided with a temperature sensor at each partition.

4. The heat dissipation mechanism for a new energy vehicle battery according to claim 3, characterized in that: The driving assembly comprises a gear (71) driven by a motor and mounted in the box cover (3), one side of the gear (71) is engaged with a toothed disc (72), the bottom of the toothed disc (72) is provided with a driving groove (73), the driving groove (73) is provided with a driving rod (74), and the driving rod (74) is fixed to the top of the sealing box (6).

5. The heat dissipation mechanism for a new energy vehicle battery according to claim 1, characterized in that: The driving rod (74) slides in the driving groove (73), and the driving groove (73) is arranged as an inclined arc structure on the toothed disc (72).

6. The heat dissipation mechanism for a new energy vehicle battery according to claim 1, characterized in that: The top of the liquid cooling box (8) is provided with a liquid outlet (81), and two rubber sheets (82) are fixed in the liquid outlet (81). The lower pressing rod (131) is embedded and vertically slides in the sidewall of the box body (1) and the partition plate (101) through the spring (132), and the bottom of the lower pressing rod (131) is connected with the outside of the liquid cooling box (8).

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