Heat dissipation mechanism for new energy automobile battery

Abstract

The invention discloses a heat dissipation mechanism for new energy automobile batteries, and relates to the technical field of new energy automobile batteries, batteries are mounted in a box body in a partitioned manner through bottom mounting strips and vertically fixed partition plates, a box cover is connected to the top of the box body, and an upper air opening is formed in the box cover in a penetrating manner; a fan is mounted in the upper half area of the upper air opening; the device further comprises a sealing box, the sealing box is arranged in a cavity in the side wall of the lower half part area of the upper air opening in an embedded mode, a driving assembly is arranged at the top of the sealing box and used for pushing out the sealing box, a liquid cooling box is arranged below the battery, and a lower air opening is formed in the bottom of the abutting rod and penetrates through the bottom of the box body. According to the heat dissipation mechanism for the new energy automobile battery, through cooperation of liquid cooling and air cooling, the heat dissipation efficiency is improved, and when the temperature is high, on one hand, air circulation is cut off, and on the other hand, fire extinguishing treatment is conducted on the interior.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and specifically relates to a heat dissipation mechanism for new energy vehicle batteries. Background Technique

[0002] The use of new energy vehicles mainly relies on batteries to provide power and cooperate with motors to drive the vehicle body forward. It is an innovative use of clean energy. During the operation of new energy vehicles, the battery occupies an important part in the vehicle body. A large amount of heat will be generated during its operation, and thus a heat dissipation mechanism is required to dissipate the heat to ensure the long-term and safe operation of the battery. However, the existing heat dissipation mechanisms have the following problems when in use:

[0003] When new energy vehicles are in use, the risk of spontaneous combustion after high heat is widely concerned. The existing heat dissipation mechanisms are not convenient for timely isolation and fire extinguishing of batteries in high-temperature areas. On the one hand, due to the requirements of space and overall weight, adding too many fire extinguishing mechanisms is likely to affect the overall layout. On the other hand, its internal structure is relatively complex. In order to ensure ventilation, the isolation effect from external air is poor, and it is difficult to reduce the entry of external oxygen in a timely manner, resulting in the easy and rapid expansion of the battery fire range.

[0004] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat dissipation mechanism for new energy vehicle batteries to solve the problem proposed in the above background technique that the existing battery heat dissipation mechanisms are not convenient for timely isolation and fire extinguishing of batteries in high-temperature areas. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solutions are too single.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A heat dissipation mechanism for new energy vehicle batteries, including a box body. Batteries are partitioned and installed in the box body 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 penetratingly opened on the box cover, and a fan is installed in the upper half area of the upper air inlet;

[0007] It further includes a sealing box, which is embedded in the side wall cavity of the lower half area of the upper air inlet. A driving component is arranged on the top of the sealing box, and the driving component is used to push out the sealing box. A liquid cooling box is arranged below the battery. A bottom plate is installed in the bottom cavity of the liquid cooling box. A resisting rod is fixed to the bottom of the bottom plate. A lower air outlet is arranged at the bottom of the resisting rod. The lower air outlet is penetratingly opened at the bottom of the box body, and a limiting block is fixed to the inner wall of the lower air outlet;

[0008] The pressing-down component is arranged inside the side wall of the box body and the partition board, and is used to drive the liquid cooling box to move downward.

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

[0010] Preferably, the top view cross-section of the sealing box is designed as a semi-circular structure, and the two sealing boxes are used to seal the upper air inlet.

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

[0012] Preferably, the driving component includes a gear driven by a motor and installed inside the box cover. One side of the gear is engaged with a toothed disc. A driving groove is formed at the bottom of the toothed disc, and a driving rod is arranged inside the driving groove. The driving rod is fixed at the top of the sealing box.

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

[0014] Preferably, a liquid outlet hole is formed through the top of the liquid cooling box, and two relatively fitting rubber sheets are fixed inside the liquid outlet hole. The two rubber sheets are used to initially seal the liquid outlet hole.

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

[0016] Preferably, the pressing-down component includes a pressing-down rod which vertically slides in an embedded manner inside the side wall of the box body and the partition board through a spring. The bottom of the pressing-down rod is connected to the outside of the liquid cooling box.

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

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, when the internal temperature is too high, the controller controls the motor to operate. The gear drives the toothed disc to rotate, and then through the driving groove and the driving rod, the two sealing boxes in the corresponding area are pushed out. Through the two semi-circular structure sealing boxes, the upper air inlet at the top is blocked. At the same time, during the movement of the sealing box, its inclined surface pushes the pressing-down rod to move downward, driving the liquid cooling box to move downward, enabling the abutting rod to enter the lower air inlet and block it. Thus, the upper and lower circulation spaces in the corresponding partition are quickly blocked, preventing external air from entering. On the one hand, it avoids the spread of internal flames outside, and on the other hand, it timely reduces the oxygen content to assist in extinguishing the fire.

[0020] 2. In the present invention, when the sealed box is pushed out, the low-temperature hot melt adhesive at the bottom opening thereof is melted by heat, so that the sodium bicarbonate in the sealed box is exposed. The sodium bicarbonate is decomposed into sodium carbonate, water and carbon dioxide by heat, and the water and carbon dioxide are in contact with the battery to cool it and isolate it from oxygen. On the other hand, when the liquid cooling box is moved downward, the bottom plate is forced to move upward relatively in the liquid cooling box through the limiting block, and the internal liquid is squeezed out through the liquid outlet hole to contact the bottom of the battery to cool it and isolate it from oxygen. The internal fire extinguishing efficiency is greatly improved through the synchronization of the upper and lower positions. At the same time, the use of sodium bicarbonate takes up less space and does not require additional fire extinguishing components, thereby reducing costs and improving space utilization. In normal use, the bottom liquid cooling box can also squeeze out the internal liquid to extinguish fire and cool it. It has multiple functions, further saves costs and reduces space occupancy, and greatly improves the safety and cost-effectiveness of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 3 This is a schematic diagram of the top view of the box sealing structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the drive slot structure of the present invention;

[0025] Figure 5 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0026] Figure 6 It is a schematic diagram of the front cross-section structure of the liquid cooling box of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

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

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] Please refer to Figures 1-7 , the present invention provides a technical solution: a heat dissipation mechanism for a new energy vehicle battery, including a box body 1. Inside the box body 1, batteries 2 are partitioned and installed 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 penetrated and opened on the box cover 3. A fan 5 is installed in the upper half area of the upper air inlet 4; when the fan 5 operates, the hot air inside the box body 1 is extracted.

[0031] A liquid cooling box 8 is arranged below the battery 2. A bottom plate 9 is installed in the bottom cavity of the liquid cooling box 8. A resisting rod 10 is fixed to the bottom of the bottom plate 9. A lower air inlet 11 is arranged at the bottom of the resisting rod 10. The lower air inlet 11 is penetrated and opened on the bottom of the box body 1. A limiting block 12 is fixed to the inner wall of the lower air inlet 11; a liquid outlet hole 81 is penetrated and opened on the top of the liquid cooling box 8. Two relatively fitting rubber sheets 82 are fixed in the liquid outlet hole 81. The two rubber sheets 82 are used for initially sealing the liquid outlet hole 81; temperature sensors are arranged at each partition in the box body 1, and a controller is installed in the box body 1; the bottom plate 9 fits and slides in the liquid cooling box 8, and the resisting rod 10 at the bottom of the bottom plate 9 is in concave-convex fit with the lower air inlet 11;

[0032] External air enters through the lower air inlet 11, passes through the liquid cooling box 8, and is cooled by an external liquid cooling delivery system through the liquid cooling box 8 for the bottom air inlet, so that the air passes through the battery 2 and is discharged from the top, and the internal battery 2 is heat-dissipated by the cooperation of liquid cooling and air cooling;

[0033] As an implementation manner of the present invention, a sealing box 6 is embedded in the side wall cavity of the lower half area of the upper air inlet 4. A driving component is arranged on the top of the sealing box 6. The driving component is used to push out the sealing box 6. The top view cross-section of the sealing box 6 is designed as a semi-circular structure. Two sealing boxes 6 are used to close the upper air inlet 4; sodium bicarbonate is filled in the sealing box 6, and a low-temperature hot melt adhesive is fixed at the bottom opening of the sealing box 6; the driving component includes a gear 71 driven by a motor and installed in the box cover 3. A toothed disc 72 is engaged with one side of the gear 71. A driving groove 73 is opened at the bottom of the toothed disc 72. A driving rod 74 is arranged in the driving groove 73. The driving rod 74 is fixed to the top of the sealing box 6; the driving rod 74 fits and slides in the driving groove 73, and the driving groove 73 is arranged as an inclined arc structure on the toothed disc 72;

[0034] When the temperature sensor detects that the temperature in the corresponding area is too high, the controller controls the operation of the motor. The motor drives the gear 71 to rotate, and then drives the gear disc 72 to rotate. Through the driving groove 73 and the driving rod 74, the sealing box 6 is pushed out, so that the two sealing boxes 6 close the upper air inlet 4, and the fan 5 is controlled to stop running. After the sealing box 6 is pushed out, the low-temperature hot melt adhesive at the bottom opening is heated and melted, exposing the internal sodium bicarbonate to heat. The sodium bicarbonate is decomposed by heat into sodium carbonate, water and carbon dioxide. Through the water and carbon dioxide contacting the battery 2, the top of the battery is isolated and cooled, realizing the functions of fire extinguishing and cooling.

[0035] As an implementation manner of the present invention, the pressing-down assembly is arranged in the side wall of the box body 1 and the partition plate 101. The pressing-down assembly is used to drive the liquid cooling box 8 to move downwards; the pressing-down assembly includes a pressing-down rod 131. The pressing-down rod 131 is vertically and slidably embedded in the side wall of the box body 1 and the partition plate 101 through a spring 132. The bottom of the pressing-down rod 131 is connected to the outside of the liquid cooling box 8; the top of the pressing-down rod 131 penetrates through the box body 1 and is located at the bottom outside of the sealing box 6. The bottom outside of the sealing box 6 is designed as an inclined surface structure;

[0036] When the sealing box 6 is pushed out, the bottom inclined surface of the sealing box 6 pushes the pressing-down rod 131 to move downwards. The downward movement of the pressing-down rod 131 drives the liquid cooling box 8 to move downwards, so that the bottom plate 9 and the abutting rod 10 move downwards. The abutting rod 10 enters the lower air inlet 11 to block it, thereby isolating the internal space from the outside and preventing air from entering. When the liquid cooling box 8 continues to move downwards, the abutting rod 10 drives the bottom plate 9 to move upwards relative to the liquid cooling box 8 under force. The liquid in the liquid cooling box 8 is pressurized, pushes open the rubber sheet 82, and floods into the bottom of the battery 2 through the liquid outlet hole 81, isolating the air at the bottom of the battery 2 through the liquid.

[0037] Working principle: During use, the fan 5 operates to extract the hot air inside the box body 1 and introduce the outside air through the lower air inlet 11. The air passes through the liquid cooling box 8 and is cooled by the external liquid cooling delivery system through the liquid cooling box 8 for the bottom air intake, so that the air passes through the battery 2 and is discharged from the top. The internal battery 2 is cooled by the cooperation of liquid cooling and air cooling. When the temperature sensor detects that the temperature in the corresponding area is too high, the controller controls the operation of the motor. The motor drives the gear 71 to rotate, and then drives the gear disc 72 to rotate. Through the driving groove 73 and the driving rod 74, the sealing box 6 is pushed out, so that the two sealing boxes 6 close the upper air inlet 4, and the fan 5 is controlled to stop running. When the sealing box 6 is pushed out, the bottom inclined surface of the sealing box 6 pushes the pressing-down rod 131 to move downwards. The downward movement of the pressing-down rod 131 drives the liquid cooling box 8 to move downwards, so that the bottom plate 9 and the abutting rod 10 move downwards. The abutting rod 10 enters the lower air inlet 11 to block it, thereby isolating the internal space from the outside and preventing air from entering;

[0038] After the resistance rod 10 enters the downwind port 11, it contacts the limit block 12. When the liquid cooling box 8 continues to move downward, the resistance 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 under pressure, pushing the rubber sheet 82 away, and pouring into the bottom of the battery 2 through the liquid outlet 81, so that the air at the bottom of the battery 2 is isolated by the liquid. After the sealing box 6 is pushed out, the low-temperature hot melt adhesive at the bottom opening thereof is melted by the heat, so that the internal sodium bicarbonate is exposed to the heat. The sodium bicarbonate is decomposed into sodium carbonate, water and carbon dioxide by the heat, and contacts the battery 2 through the water and carbon dioxide, so that the top is isolated and cooled, thereby realizing the fire extinguishing and cooling function.

[0039] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position 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 position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation mechanism for a new energy vehicle battery, comprising a box body (1). Inside the box body (1), a battery (2) is partitioned and installed 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 penetratingly opened on the box cover (3), and a fan (5) is installed in the upper half area of the upper air inlet (4); It is characterized in that: It further includes a sealing box (6). The sealing box (6) is embedded in the side wall cavity of the lower half area of the upper air inlet (4). A driving component is arranged on the top of the sealing box (6), and the driving component is used to push out the sealing box (6). A liquid cooling box (8) is arranged below the battery (2). A bottom plate (9) is installed in the bottom cavity of the liquid cooling box (8). A resisting rod (10) is fixed to the bottom of the bottom plate (9). A lower air outlet (11) is arranged at the bottom of the resisting rod (10). The lower air outlet (11) is penetratingly opened on the bottom of the box body (1), and a limiting block (12) is fixed to the inner wall of the lower air outlet (11); A pressing-down component, which is arranged in the side wall of the box body (1) and the partition plate (101), and the pressing-down component is used to drive the liquid cooling box (8) to move downward.

2. The heat dissipation mechanism for a new energy vehicle battery according to claim 1, wherein: Temperature sensors are arranged at each partition in the box body (1), and a controller is installed in the box body (1).

3. The heat dissipation mechanism for a new energy vehicle battery according to claim 2, characterized in that: The top view cross-section of the sealing box (6) is designed as a semi-circular structure, and the two sealing boxes (6) are used to close the upper air inlet (4).

4. A heat dissipation mechanism for a new energy vehicle battery according to claim 31, characterized in that: The sealing box (6) is filled with sodium bicarbonate, and a low-temperature hot melt adhesive is fixed at the bottom opening of the sealing box (6).

5. The heat dissipation mechanism for a new energy vehicle battery according to claim 4, characterized in that: The driving component includes a gear (71) driven by a motor and installed in the box cover (3). A toothed disc (72) is meshed with one side of the gear (71). A driving groove (73) is opened at the bottom of the toothed disc (72), and a driving rod (74) is arranged in the driving groove (73). The driving rod (74) is fixed to the top of the sealing box (6).

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

7. The heat dissipation mechanism for a new energy vehicle battery according to claim 6, characterized in that: A liquid outlet hole (81) is penetratingly opened at the top of the liquid cooling box (8), and two relatively fitting rubber sheets (82) are fixed in the liquid outlet hole (81). The two rubber sheets (82) are used to initially seal the liquid outlet hole (81).

8. A heat dissipation mechanism for a new energy vehicle battery according to claim 7, characterized in that: The bottom plate (9) fits and slides in the liquid cooling box (8), and the resisting rod (10) at the bottom of the bottom plate (9) is in concave-convex fit with the lower air outlet (11).

9. The heat dissipation mechanism for a new energy vehicle battery according to claim 8, wherein: The pressing-down component includes a pressing-down rod (131). The pressing-down rod (131) is vertically and slidably embedded through a spring (132) in the side wall of the box body (1) and the partition plate (101), and the bottom of the pressing-down rod (131) is connected to the outside of the liquid cooling box (8).

10. A heat dissipation mechanism for a new energy vehicle battery according to claim 9, characterized in that: The top of the pressing-down rod (131) penetrates through the box body (1) and is located at the bottom outside the sealing box (6). The bottom outside of the sealing box (6) is designed as an inclined surface structure.

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