A new energy vehicle battery cooling device

Abstract

The present invention relates to the field of battery manufacturing technology, and specifically to a new energy vehicle battery heat dissipation device, including a cabinet, the front of the cabinet is set to be an opening, the front of the cabinet is hinged with a cabinet door, a placement rack is installed inside the cabinet, a plurality of separate cavities are arranged inside the placement rack, the inner side of the cavity is used to place batteries, a plurality of air inlet pipes corresponding to the cavities are installed on the cabinet door, one end of the air inlet pipe runs through the cabinet door, a fan is installed inside the air inlet pipe, and an air storage box is fixedly connected to the bottom of the cabinet. The present invention absorbs external air into the cabinet through the fan on the cabinet door and the induced draft fan on the air outlet, takes away the heat of the battery and then discharges it upward from the air outlet, thereby avoiding the heat dissipation between adjacent placement racks affecting each other's heat dissipation, and the hot air discharged upward can be easily discharged from the factory during air circulation.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a heat dissipation device for a battery of a new energy vehicle. Background Art

[0002] Batteries, motors and electronic control systems are the three key components of new energy vehicles. Among them, power batteries are the most critical link. With the continuous development of new energy vehicles, power batteries are also receiving more and more attention. The storage and charging involved in the production of power batteries will generate heat. Generally, the factory area places the batteries on the storage rack and circulates the air in the factory area through fans and other structures to dissipate the heat of the batteries.

[0003] There is technology to dissipate heat for stored batteries. However, since multiple storage racks are arranged together, when the heat emitted by the batteries on one storage rack is conducted to the surrounding air, it will affect the heat dissipation of the batteries on adjacent storage racks. In addition, when the air circulates in the factory, the air circulation effect at the storage rack is poor, and the heat dissipation is slow. In addition, if a battery on a storage rack fails, it will directly affect the surrounding batteries, and it will be inconvenient for subsequent processing. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a new energy vehicle battery heat dissipation device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A new energy vehicle battery heat dissipation device comprises a cabinet, wherein the front of the cabinet is set as an opening, a cabinet door is hinged on the front of the cabinet, a placement rack is installed inside the cabinet, a plurality of separate cavities are arranged inside the placement rack, and the inner side of the cavity is used to place storage batteries; a plurality of air intake pipes corresponding to the cavities are installed on the cabinet door, one end of the air intake pipe passes through the cabinet door, a fan is installed inside the air intake pipe, an air storage box is fixedly connected to the bottom of the cabinet, a carbon dioxide gas cylinder for supplying air to the inside of the air intake pipe is installed inside the air storage box, and a temperature detection probe for detecting the temperature inside the cavity is also installed on the cabinet door; a Several exhaust pipes adapted to the cavity, one end of the exhaust pipe passes through the back of the cabinet, and the back of the cabinet is designed with several vertically arranged air outlets, an induced fan is installed on the upper end of the air outlet, and the end of the exhaust pipe away from the cabinet is connected with the interior of the air outlet; a heat-conducting copper tube is installed on the side of the placement rack in contact with the battery, the interior of the heat-conducting copper tube is filled with heat-conducting liquid, one end of the heat-conducting copper tube is fixedly connected with a connecting tube, and the end of the connecting tube away from the heat-conducting copper tube is fixedly connected with a heat dissipation pipe, a convex ring protruding toward the inside of the exhaust pipe is installed on the exhaust pipe, and a plurality of air inlet holes are opened on the convex ring, and the heat dissipation pipe is located on the outside of the air inlet hole.

[0007] In the above-mentioned new energy vehicle battery cooling device, the outer wall of the intake pipe is fixedly connected to a solenoid valve, the inner wall of the intake pipe is fixedly connected to a gas nozzle connected to the output end of the solenoid valve, the input end of the solenoid valve is fixedly connected to a gas pipeline, and the end of the gas pipeline away from the solenoid valve is connected to the output end of the carbon dioxide gas tank.

[0008] In the above-mentioned new energy vehicle battery cooling device, the fan is composed of a first motor, a long shaft rod and fan blades. The first motor is fixedly connected to the inner wall of the air intake pipe through a set connecting rod, and the output shaft of the first motor is fixedly connected to one end of the long shaft rod. The end of the long shaft rod away from the first motor is fixedly connected to the middle part of the fan blade. The air nozzle is located between the fan blade and the first motor. The interior of the air intake pipe is rotatably connected with a plurality of air guide plates, and the plurality of air guide plates are located between the air nozzle and the first motor. The outer wall of the air intake pipe is also fixedly connected with a driving structure for driving the plurality of air guide plates to rotate.

[0009] In the above-mentioned new energy vehicle battery cooling device, the driving structure is internally rotatably connected with a connecting shaft, one end of the driving structure is fixedly connected with a second motor for driving the connecting shaft to rotate, the outer wall of the connecting shaft is fixedly connected with a plurality of active bevel gears, one end of the air guide plate is fixedly connected with a driven bevel gear, the driven bevel gear is located inside the driving structure, and the driven bevel gear is meshed with the active bevel gear.

[0010] In the above-mentioned new energy vehicle battery cooling device, a cooling fin is fixedly installed on the outside of the heat dissipation tube, a branch pipe is fixedly connected to the lower end of the heat dissipation fin, the lower end of the branch pipe is connected to the inside of the connecting pipe, and an annular baffle is fixedly connected to the outer wall of the exhaust pipe, and the annular baffle is located on the outside of the heat dissipation tube.

[0011] In the above-mentioned new energy vehicle battery heat dissipation device, a baffle is installed at one end of the exhaust pipe close to the cabinet.

[0012] In the above-mentioned new energy vehicle battery heat dissipation device, the lower end of the air outlet is detachably connected with an ash discharge cover, and a filter is installed at the end of the air inlet pipe away from the cabinet door.

[0013] In the above-mentioned new energy vehicle battery heat dissipation device, the air guide plate is made of a heat insulating material, and the heat insulating material is a high-pressure fire-resistant board made of resin.

[0014] Compared with the existing technology, the advantages of this new energy vehicle battery cooling device are:

[0015] 1. The fan on the cabinet door and the exhaust fan on the air outlet absorb the external air into the cabinet, take away the heat of the battery and then discharge it upward from the air outlet, so as to avoid the heat dissipation between adjacent racks affecting each other. The hot air discharged upward can be easily discharged from the factory during air circulation;

[0016] 2. The setting of the heat-conducting copper tube absorbs the heat emitted by the battery. The heat-conducting liquid inside it has a low boiling point. It evaporates after being heated and is transmitted to the inside of the heat-dissipating pipe along the connecting pipe. After heat dissipation, it condenses and returns to the inside of the heat-conducting copper tube. The setting of the convex ring inside the exhaust pipe reduces the cross-sectional area of ​​the convex ring inside the exhaust pipe. The flow rate of the airflow will increase when it flows through the convex ring, and then negative pressure will be generated at the convex ring, so that the air outside the convex ring will enter the inside of the exhaust pipe through the air inlet hole, thereby improving the cooling efficiency at the heat-dissipating pipe and further improving the heat dissipation effect of the battery;

[0017] 3. The cabinet doors are divided into independent cavities, which can reduce the impact on surrounding batteries when a battery fails. The temperature detection probe will also detect the temperature inside the cavity. When the temperature is abnormal, it will control carbon dioxide to be ejected from the air nozzle. At the same time, the driving structure will be controlled to drive the air guide plate to rotate, so that multiple air guide plates will close the air intake pipe to reduce the air entering the interior of the air intake pipe. The ejected carbon dioxide can not only cool the battery surface, but also discharge the oxygen inside the cavity, thereby preventing the battery from catching fire, thereby avoiding danger after battery failure, and making it convenient for staff to handle faulty batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention in the main viewing direction;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in another direction;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 5 It is an enlarged schematic diagram of the cabinet door structure of the present invention;

[0023] Figure 6 The present invention Figure 5 Schematic diagram of the cross-sectional structure at the CC line;

[0024] Figure 7 The present invention Figure 3 A schematic diagram of the structure enlargement at the center A;

[0025] Figure 8 The present invention Figure 6 A schematic diagram of the structure at D in the middle is enlarged;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the punching bag of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the heat-conducting copper tube of the present invention;

[0028] Fig.11 The present invention Figure 3 Schematic diagram of the enlarged structure at B in the middle.

[0029] In the figure: 1. cabinet; 2. rack; 3. cabinet door; 4. air inlet pipe; 5. air storage box; 6. carbon dioxide gas tank; 7. air pipeline; 8. solenoid valve; 9. air nozzle; 10. air guide plate; 11. driving structure; 12. exhaust pipe; 13. air outlet; 14. exhaust fan; 15. heat-conducting copper tube; 16. connecting pipe; 17. heat dissipation pipe; 18. convex ring; 19. air inlet hole; 20. temperature detection probe; 21. battery; 22. first motor; 23. long shaft; 24. fan blade; 25. filter screen; 26. driven bevel gear; 27. connecting shaft; 28. driving bevel gear; 29. ​​second motor; 30. baffle; 31. annular baffle; 32. heat dissipation fin; 33. branch pipe; 34. ash discharge cover. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 on the present invention.

[0032] Reference Figure 1-Figure 11A new energy vehicle battery heat dissipation device comprises a cabinet 1, the front of the cabinet 1 is set as an opening, a cabinet door 3 is hinged on the front of the cabinet 1, a placement rack 2 is installed inside the cabinet 1, a plurality of separate cavities are arranged inside the placement rack 2, and the inner side of the cavity is used to place a battery 21; a plurality of air intake pipes 4 corresponding to the cavities are installed on the cabinet door 3, one end of the air intake pipe 4 passes through the cabinet door 3, a fan is installed inside the air intake pipe 4, an air storage box 5 is fixedly connected to the bottom of the cabinet 1, a carbon dioxide gas tank 6 for supplying air to the inside of the air intake pipe 4 is installed inside the air storage box 5, an outer wall of the air intake pipe 4 is fixedly connected to a solenoid valve 8, and the inner wall of the air intake pipe 4 is fixedly connected to the electric The output end of the solenoid valve 8 is connected to the air nozzle 9, the input end of the solenoid valve 8 is fixedly connected to the air pipeline 7, the end of the air pipeline 7 away from the solenoid valve 8 is connected to the output end of the carbon dioxide gas tank 6, the carbon dioxide gas tank 6 is used to output carbon dioxide, after the solenoid valve 8 is opened, the carbon dioxide inside the carbon dioxide gas tank 6 will pass through the air pipeline 7 and the solenoid valve 8 and then be sprayed out from the air nozzle 9, the cabinet door 3 is also equipped with a temperature detection probe 20 for detecting the temperature in the cavity, when the battery temperature is abnormally high, the solenoid valve 8 will be controlled to be turned on to spray carbon dioxide, wherein the fan is composed of a first motor 22, a long shaft rod 23 and a fan blade 24, the first motor 22 is set The connecting rod is fixedly connected to the inner wall of the air intake pipe 4, the output shaft of the first motor 22 is fixedly connected to one end of the long shaft rod 23, the end of the long shaft rod 23 away from the first motor 22 is fixedly connected to the middle of the fan blade 24, the air nozzle 9 is located between the fan blade 24 and the first motor 22, and the internal rotation of the air intake pipe 4 is connected to a plurality of air guide plates 10, and the plurality of air guide plates 10 are located between the air nozzle 9 and the first motor 22. The outer wall of the air intake pipe 4 is also fixedly connected to a driving structure 11 for driving the plurality of air guide plates 10 to rotate. When the temperature is abnormal, the driving structure 11 will be controlled to drive the air guide plates 10 to rotate, so that the plurality of air guide plates 10 will close the air intake pipe 4 to reduce the amount of air entering. , and the setting of the longer long shaft rod 23 enables the carbon dioxide to be blown into the cavity by the fan blade 24 after being sprayed out from the air nozzle 9, and the interference of carbon dioxide on the first motor 22 can also be avoided. The sprayed carbon dioxide can not only cool the surface of the battery, but also discharge the oxygen inside the cavity, thereby preventing the battery from catching fire; a plurality of exhaust pipes 12 adapted to the cavity are fixedly connected to the back of the cabinet 1, one end of the exhaust pipe 12 passes through the back of the cabinet 1, and a plurality of vertically arranged air outlets 13 are designed on the back of the cabinet 1. An induced fan 14 is installed on the upper end of the air outlet 13, and the end of the exhaust pipe 12 away from the cabinet 1 is connected to the inside of the air outlet 13;A heat-conducting copper tube 15 is installed on the side of the placement rack 2 that contacts the battery 21. The inside of the heat-conducting copper tube 15 is filled with heat-conducting liquid. A connecting tube 16 is fixedly connected to one end of the heat-conducting copper tube 15. A heat-dissipating tube 17 is fixedly connected to the end of the connecting tube 16 away from the heat-conducting copper tube 15. A convex ring 18 protruding toward the inside of the exhaust pipe 12 is installed on the exhaust pipe 12. A plurality of air inlet holes 19 are opened on the convex ring 18. The heat-dissipating tube 17 is located outside the air inlet holes 19. The heat-conducting copper tube 15 contacts the battery 21 and absorbs the heat emitted by the battery 21. The heat-conducting liquid inside it has a low boiling point. It evaporates after being heated and is transmitted to the inside of the heat-dissipating tube 17 along the connecting tube 16. After heat dissipation, it condenses and returns to the inside of the heat-conducting copper tube 15. ;

[0033] When the present invention is in use, the battery 21 is placed in the cavity on the placement rack 2, and the cabinet door 3 is closed. The fan on the cabinet door 3 and the exhaust fan 14 on the air outlet 13 absorb the external air into the cabinet 1, take away the heat of the battery 21, and then discharge it upward from the air outlet 13, thereby avoiding the heat dissipation between adjacent placement racks affecting each other. Since the top of the factory building is relatively open, the hot air discharged upward can be easily discharged from the factory building during air circulation, and with the arrangement of the heat-conducting copper pipe 15, the heat of the battery 21 is absorbed. 1, the heat dissipated by the heat transfer fluid inside has a low boiling point, evaporates after being heated, and is transmitted to the inside of the heat dissipation pipe 17 along the connecting pipe 16, and condenses and returns to the inside of the heat conduction copper pipe 15 after heat dissipation. The setting of the convex ring 18 inside the exhaust pipe 12 reduces the cross-sectional area of ​​the convex ring 18 inside the exhaust pipe 12. When the airflow flows through the convex ring 18, the flow rate will increase, and then negative pressure will be generated at the convex ring 18, so that the air outside the convex ring 18 will enter the inside of the exhaust pipe 12 along the air inlet 19, thereby improving the heat dissipation of the heat pipe. The cooling efficiency at 17 further improves the heat dissipation effect on the battery 21, and the cabinet door 3 is divided into independent cavities, which can reduce the impact on surrounding batteries when the battery fails. The temperature detection probe 20 will also detect the temperature inside the cavity. When the temperature is abnormal, the carbon dioxide will be controlled to be ejected from the gas nozzle 9, and the driving structure 11 will be controlled to drive the air guide plate 10 to rotate, so that the multiple air guide plates 10 will close the air intake pipe 4 to reduce the air entering the interior of the air intake pipe 4. The setting of the longer long shaft rod 23 allows the carbon dioxide to be ejected from the gas nozzle 9 and then blown into the interior of the cavity by the fan blade 24, which can also avoid the interference of carbon dioxide on the first motor 22. The ejected carbon dioxide can not only cool the battery surface, but also discharge the oxygen inside the cavity, thereby preventing the battery from catching fire and burning, thereby avoiding danger after battery failure. Since the battery will be cooled in time after overheating, and will not catch fire after discharging oxygen, the generated smoke will also be sent to the top, which is convenient for the staff to handle the faulty battery.

[0034] Among them, the driving structure 11 is internally rotatably connected with a connecting shaft 27, one end of the driving structure 11 is fixedly connected with a second motor 29 for driving the connecting shaft 27 to rotate, the outer wall of the connecting shaft 27 is fixedly connected with a plurality of active bevel gears 28, one end of the air guide plate 10 is fixedly connected with a driven bevel gear 26, the driven bevel gear 26 is located inside the driving structure 11, the driven bevel gear 26 is meshed with the active bevel gear 28, the second motor 29 drives the connecting shaft 27 to rotate, the active bevel gear 28 on the connecting shaft 27 drives the driven bevel gear 26 to rotate, thereby causing the air guide plate 10 to rotate, and the inside of the intake pipe 4 is relatively closed.

[0035] Among them, a heat dissipation fin 32 is fixedly installed on the outer side of the heat dissipation pipe 17, and a branch pipe 33 is fixedly connected to the lower end of the heat dissipation fin 32. The lower end of the branch pipe 33 is connected to the interior of the connecting pipe 16. An annular baffle 31 is fixedly connected to the outer wall of the exhaust pipe 12. The annular baffle 31 is located on the outer side of the heat dissipation pipe 17. The heat dissipation fin 32 is used to increase the contact area with the air and accelerate the heat dissipation. The branch pipe 33 is used for the reflux of the condensed heat transfer liquid.

[0036] A blocking net 30 is installed at one end of the exhaust pipe 12 close to the cabinet 1 , and the blocking net 30 is used to block the soot generated when the battery 21 fails at high temperature.

[0037] Among them, the lower end of the air outlet 13 is detachably connected with an ash discharge cover 34, and a filter 25 is installed at the end of the air inlet pipe 4 away from the cabinet door 3. The filter 25 is used to filter dust in the air. After the ash discharge cover 34 is opened, the dust that falls into the inside of the air outlet 13 can be easily cleaned.

[0038] The air guide plate 10 is made of a heat-insulating material, and the heat-insulating material is a high-pressure fire-resistant plate made of resin. The setting of the air guide plate 10 can reduce the impact of temperature changes on the first motor 22 .

[0039] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy vehicle battery heat dissipation device, characterized in that: The cabinet (1) comprises a cabinet body (1), the front of which is arranged to be open, a cabinet door (3) being hingedly connected to the front of the cabinet body (1), a placement rack (2) being installed inside the cabinet body (1), a plurality of separate cavities being arranged inside the placement rack (2), and the inner side of the cavities being used to place storage batteries (21); The cabinet door (3) is provided with a plurality of air inlet pipes (4) corresponding to the cavities, one end of the air inlet pipe (4) passes through the cabinet door (3), a fan is installed inside the air inlet pipe (4), a gas storage box (5) is fixedly connected to the bottom of the cabinet body (1), a carbon dioxide gas cylinder (6) for supplying gas to the inside of the air inlet pipe (4) is installed inside the gas storage box (5), and a temperature detection probe (20) for detecting the temperature inside the cavity is also installed on the cabinet door (3); The back of the cabinet (1) is fixedly connected with a plurality of exhaust pipes (12) adapted to the cavity, one end of the exhaust pipe (12) passes through the back of the cabinet (1), the back of the cabinet (1) is designed with a plurality of vertically arranged air outlets (13), the upper end of the air outlets (13) is equipped with an exhaust fan (14), and the end of the exhaust pipe (12) away from the cabinet (1) is connected to the interior of the air outlet (13); A heat-conducting copper tube (15) is installed on the side of the placement rack (2) in contact with the storage battery (21); the interior of the heat-conducting copper tube (15) is filled with heat-conducting liquid; one end of the heat-conducting copper tube (15) is fixedly connected to a connecting tube (16); one end of the connecting tube (16) away from the heat-conducting copper tube (15) is fixedly connected to a heat dissipation tube (17); a convex ring (18) protruding toward the interior of the exhaust pipe (12) is installed on the exhaust pipe (12); a plurality of air inlet holes (19) are opened on the convex ring (18); and the heat dissipation tube (17) is located outside the air inlet hole (19).

2. A new energy vehicle battery heat dissipation device according to claim 1, characterized in that: The outer wall of the air intake pipe (4) is fixedly connected to a solenoid valve (8), the inner wall of the air intake pipe (4) is fixedly connected to a gas nozzle (9) connected to the output end of the solenoid valve (8), the input end of the solenoid valve (8) is fixedly connected to a gas pipeline (7), and the end of the gas pipeline (7) away from the solenoid valve (8) is connected to the output end of the carbon dioxide gas tank (6).

3. A new energy vehicle battery heat dissipation device according to claim 2, characterized in that: The fan is composed of a first motor (22), a long shaft (23) and a fan blade (24); the first motor (22) is fixedly connected to the inner wall of the air intake pipe (4) through a set connecting rod; the output shaft of the first motor (22) is fixedly connected to one end of the long shaft (23); the end of the long shaft (23) away from the first motor (22) is fixedly connected to the middle of the fan blade (24); the air nozzle (9) is located between the fan blade (24) and the first motor (22); the interior of the air intake pipe (4) is rotatably connected to a plurality of air guide plates (10); the plurality of air guide plates (10) are located between the air nozzle (9) and the first motor (22); the outer wall of the air intake pipe (4) is also fixedly connected to a driving structure (11) for driving the plurality of air guide plates (10) to rotate.

4. A new energy vehicle battery heat dissipation device according to claim 3, characterized in that: The driving structure (11) is rotatably connected to a connecting shaft (27) inside, one end of the driving structure (11) is fixedly connected to a second motor (29) for driving the connecting shaft (27) to rotate, the outer wall of the connecting shaft (27) is fixedly connected to a plurality of driving bevel gears (28), one end of the air guide plate (10) is fixedly connected to a driven bevel gear (26), the driven bevel gear (26) is located inside the driving structure (11), and the driven bevel gear (26) is meshed with the driving bevel gear (28).

5. A new energy vehicle battery heat dissipation device according to claim 1, characterized in that: A heat dissipation fin (32) is fixedly mounted on the outer side of the heat dissipation pipe (17); a branch pipe (33) is fixedly connected to the lower end of the heat dissipation fin (32); the lower end of the branch pipe (33) is connected to the interior of the connecting pipe (16); an annular baffle (31) is fixedly connected to the outer wall of the exhaust pipe (12); and the annular baffle (31) is located on the outer side of the heat dissipation pipe (17).

6. A new energy vehicle battery heat dissipation device according to claim 1, characterized in that: A blocking net (30) is installed at one end of the exhaust pipe (12) close to the cabinet (1).

7. A new energy vehicle battery heat dissipation device according to claim 1, characterized in that: The lower end of the air outlet tube (13) is detachably connected to a dust discharge cover (34), and a filter screen (25) is installed at one end of the air inlet pipe (4) away from the cabinet door (3).

8. A new energy vehicle battery heat dissipation device according to claim 3, characterized in that: The air guide plate (10) is made of heat insulating material.

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