Cooling pipe for heat dissipation of battery

Abstract

The utility model relates to a cooling pipe for heat dissipation of a battery, which comprises a cooling pipe which is bent for multiple times to form a heat dissipation groove for inserting the battery; the cooling tank penetrates through the cooling pipe in a shape matching manner; the liquid inlet assembly is fixed on one side of the cooling pipe and is connected with the cooling tank; the liquid return assembly is fixed on the other side of the cooling pipe and is connected with the cooling tank; and the cooling pipes are used for cooling three surfaces of the battery inserted in the heat dissipation groove. According to the cooling pipe for heat dissipation of the battery, cooling liquid is introduced into the liquid inlet through groove of the liquid inlet plate, flows to the circulating groove through the liquid inlet flow channel above the cooling pipe, then flows to the liquid return through groove of the liquid inlet plate through the liquid return flow channel below the cooling pipe, and is finally discharged. The three side surfaces of the square battery can be cooled at the same time, so that the heat dissipation efficiency of the battery is improved, the heat dissipation time is shortened, and the safety coefficient of the battery during charging is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery heat dissipation technical field, concretely relates to a cooling pipe for battery heat dissipation. BACKGROUND

[0002] At present, according to market demand, the efficiency of charging is continuously improved, and the heat generation is continuously increased, so it is necessary to improve the heat dissipation efficiency of battery, to ensure that the battery can operate in the safe working temperature range, to maintain its high performance and long life, to avoid the fire or explosion caused by the excessive heating of battery.

[0003] Square cell generally adopts liquid cooling plate to heat exchange, that is, square cell is placed on liquid cooling plate in turn, and the bottom of square cell is heat dissipated by liquid cooling plate. This heat dissipation mode can cope with the heat dissipation of small capacity battery, but when facing large capacity battery, its heat dissipation efficiency is low, and it is easy to cause the combustion or explosion accident of battery. UTILITY MODEL CONTENTS

[0004] The utility model provides a cooling pipe for battery heat dissipation, solves the defect that the heat dissipation mode of existing liquid cooling plate can only heat dissipate the bottom of square cell, and the heat dissipation efficiency is low.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of a cooling pipe for battery heat dissipation, which comprises:

[0006] Cooling pipe, the cooling pipe is bent multiple times to form a heat dissipation groove for inserting battery;

[0007] Cooling groove, the cooling groove is matched and penetrates the cooling pipe;

[0008] Liquid inlet assembly, the liquid inlet assembly is fixed on one side of the cooling pipe and connected with the cooling groove;

[0009] Liquid return assembly, the liquid return assembly is fixed on the other side of the cooling pipe and connected with the cooling groove;

[0010] The cooling pipe cools the battery inserted in the heat dissipation groove from three sides.

[0011] Optimally, the liquid inlet assembly comprises a liquid inlet plate, a through groove in the liquid inlet plate, a first insertion slot in one side of the liquid inlet plate and connected with the through groove, and at least two liquid delivery pipes fixed on the liquid inlet plate, one side of the cooling pipe is inserted in the first insertion slot, so as to connect the cooling groove and the through groove.

[0012] Optimally, the liquid return assembly comprises a circulation pipe, a circulation groove in the circulation pipe, and a second insertion slot in one side of the circulation pipe and connected with the circulation groove, the other side of the cooling pipe is inserted in the second insertion slot, so as to connect the cooling groove and the circulation groove.

[0013] Optimally, it also includes a cooling baffle fixed in the cooling pipe in a matching shape and dividing the cooling tank into an upper cooling tank and a lower cooling tank, a first baffle fixed in the upper cooling tank in a matching shape and spaced apart, an inlet channel formed between adjacent first baffles, a second baffle fixed in the lower cooling tank in a matching shape and spaced apart, and a return channel formed between adjacent second baffles.

[0014] Optimally, the liquid inlet assembly further includes a side slot formed on one side of the liquid inlet plate and connected to the through groove, a main partition plate inserted into the side slot, and a limiting groove formed on the side of the main partition plate near the cooling pipe, wherein one side of the cooling pipe is inserted into the first slot and abuts against the limiting groove.

[0015] The main partition divides the channel into an upper liquid inlet channel and a lower liquid return channel. The liquid inlet channel is connected to the liquid inlet flow channel, and the liquid return channel is connected to the liquid return flow channel.

[0016] Optimally, the liquid inlet assembly further includes a liquid inlet groove that penetrates the liquid inlet pipe and communicates with the through groove, a liquid inlet abutment plate integrally connected to the periphery of the liquid inlet pipe and abutting against the liquid inlet plate, a cover plate fastened to both sides of the through groove, and a contact plate integrally connected to the cover plate and abutting against the liquid inlet plate.

[0017] Optimally, the liquid inlet assembly further includes at least two connecting pipes fixed on the liquid inlet plate and arranged opposite to the liquid delivery pipe, a pipe groove passing through the connecting pipe and communicating with the through groove, and a connecting abutment plate integrally connected to the periphery of the connecting pipe and abutting against the liquid inlet plate.

[0018] Ideally, the thickness of the main partition is equal to the height of the side slot.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] This utility model relates to a battery cooling pipe that introduces coolant into the inlet channel of an inlet plate. The coolant flows through the inlet channel above the cooling pipe to a circulation tank, and then through the return channel below the cooling pipe to the return channel of the inlet plate, finally being discharged. This allows for simultaneous cooling of three sides of a square battery, improving heat dissipation efficiency, shortening cooling time, and thus enhancing battery charging safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the cooling pipe of this utility model;

[0023] Figure 3 This is a right view of the cooling pipe of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the circulation tube of this utility model;

[0025] Figure 5 This is a cross-sectional view of the circulation pipe of this utility model;

[0026] Figure 6 This is a cross-sectional view of the liquid inlet plate of this utility model;

[0027] Figure 7 This utility model Figure 6 Enlarged view of point A in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of the liquid inlet plate and the main partition plate of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the present invention after the liquid inlet plate and the main partition plate are separated;

[0030] Figure 10 This is a schematic diagram of the structure of the present invention after multiple cooling pipes are assembled.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Cooling pipe; 2. Heat dissipation tank; 3. Cooling tank; 4. Cooling baffle; 5. First baffle; 6. Liquid inlet channel; 7. Second baffle; 8. Liquid return channel; 9. Liquid inlet plate; 10. Through groove; 11. First slot; 12. Side slot; 13. Main baffle; 14. Limiting groove; 15. Extension block; 16. Liquid delivery pipe; 17. Liquid delivery tank; 18. Liquid delivery stop plate; 19. Connecting pipe; 20. Pipe groove; 21. Connecting stop plate; 22. Cover plate; 23. Contact plate; 24. Circulation pipe; 25. Circulation tank; 26. Second slot; 27. Sealing plug. Detailed Implementation

[0033] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0034] like Figure 1 The diagram shows the structure of the cooling pipe for battery heat dissipation according to this invention. This cooling pipe is typically used for heat dissipation of prismatic batteries, and can simultaneously cool three sides of the prismatic battery, improving the battery's heat dissipation efficiency and shortening the heat dissipation time. It includes a cooling pipe 1, a heat dissipation tank 2, a cooling tank 3, an inlet assembly, and a return assembly.

[0035] like Figure 2The diagram shows the structure of cooling pipe 1. After being bent, cooling pipe 1 forms a "snake" shape, and a "U"-shaped heat dissipation groove 2 is formed at the bend. The square battery to be cooled is inserted into the heat dissipation groove 2. Because the heat dissipation groove 2 is "U"-shaped, it can dissipate heat from three sides of the battery at the same time, thereby improving the battery's heat dissipation efficiency and shortening the heat dissipation time.

[0036] Cooling tank 3 is shaped to fit through cooling pipe 1, and coolant is introduced into cooling tank 3 to dissipate heat from the battery. To improve heat dissipation efficiency, the coolant in cooling tank 3 does not flow from left to right, but rather from left, circulates on the right side, and then exits from the left.

[0037] like Figure 3 As shown, the cooling baffle 4 is fixed inside the cooling pipe 1 in a matching shape and divides the cooling tank 3 into an upper cooling tank and a lower cooling tank. The coolant enters from the inlet assembly, flows through the upper cooling tank, passes through the return assembly, and is then circulated out from the lower cooling tank.

[0038] The first baffle 5 is fixed in the upper cooling tank with a matching shape and is spaced apart. The liquid inlet channel 6 is formed between two adjacent first baffles 5. The second baffle 7 is fixed in the lower cooling tank with a matching shape and is spaced apart. The liquid return channel 8 is formed between two adjacent second baffles 7. The first baffle 5 and the second baffle 7 can improve the structural strength of the cooling pipe 1.

[0039] The liquid inlet assembly is fixed to one side of cooling pipe 1, such as... Figure 6 , 7 As shown, the liquid inlet assembly includes an inlet plate 9, a through groove 10, a first slot 11, a side slot 12, a main partition 13, a limiting groove 14, an extension block 15, a liquid delivery pipe 16, a liquid delivery trough 17, a liquid delivery abutment 18, a connecting pipe 19, a pipe groove 20, a connecting abutment 21, a cover plate 22, and a contact plate 23. The through groove 10 vertically penetrates the inlet plate 9 and is connected to the cooling tank 3. There are at least two liquid delivery pipes 16, fixed to one side of the inlet plate 9. One liquid delivery pipe 16 is used to introduce coolant into the through groove 10, and the other liquid delivery pipe 16 is used to discharge the coolant after the cooling cycle.

[0040] A through hole is provided on the side of the liquid inlet plate 9. The liquid delivery pipe 16 is fixed in the through hole by an interference fit. The liquid delivery groove 17 passes through the liquid delivery pipe 16 and is connected to the through groove 10. The liquid delivery abutment plate 18 is integrally connected to the outer peripheral surface of the liquid delivery pipe 16. When the liquid delivery pipe 16 is inserted into the through hole of the liquid inlet plate 9, the liquid delivery abutment plate 18 abuts against the side of the liquid inlet plate 9 to prevent the liquid delivery pipe 16 from being inserted too deeply.

[0041] The cover plate 22 is fastened to both sides of the liquid inlet plate 9 to seal the through groove 10 and prevent coolant leakage from the through groove 10. The contact plate 23 is integrally connected to the outer peripheral surface of the cover plate 22. When the cover plate 22 is fastened to both sides of the liquid inlet plate 9, the contact plate 23 abuts against the liquid inlet plate 9 to limit the insertion of the cover plate 22.

[0042] There are at least two connecting pipes 19, fixed on the other side of the liquid inlet plate 9 and arranged opposite to the liquid delivery pipe 16, such as Figure 10 As shown, the connecting pipe 19 is used to connect multiple cooling pipes 1. A through hole is provided on the side of the liquid inlet plate 9, and the connecting pipe 19 is fixed in the through hole by an interference fit. The pipe groove 20 passes through the connecting pipe 19 and communicates with the through groove 10. The connecting abutment plate 21 is integrally connected to the outer circumferential surface of the connecting pipe 19. When the connecting pipe 19 is inserted into the through hole of the liquid inlet plate 9, the connecting abutment plate 21 abuts against the side of the liquid inlet plate 9 to prevent the connecting pipe 19 from being inserted too deeply.

[0043] like Figure 8 , 9 As shown, the first slot 11 is vertically opened on the side of the liquid inlet plate 9 near the cooling pipe 1 and is connected to the through groove 10. In actual assembly, the cooling pipe 1 is inserted into the first slot 11 and then fixed at the connection by welding. At this time, the through groove 10 is connected to the cooling groove 3 in the cooling pipe 1.

[0044] The side slot 12 is horizontally opened on the side of the liquid inlet plate 9 near the cooling pipe 1 and is connected to the through slot 10. The main partition plate 13 is horizontally inserted into the side slot 12 and extends into the through slot 10 of the liquid inlet plate 9. Therefore, the main partition plate 13 divides the through slot 10 into an upper liquid inlet through slot and a lower liquid return through slot. The upper liquid inlet through slot is connected to the liquid inlet channel 6 above the cooling pipe 1, and the lower liquid return through slot is connected to the liquid return channel 8 below the cooling pipe 1.

[0045] The coolant enters the upper inlet channel, flows through the inlet channel 6 above the cooling pipe 1 to the return assembly, and then flows through the return channel 8 below the cooling pipe 1 to the lower return channel, and finally is discharged.

[0046] The thickness of the main partition 13 is equal to the height of the side slot 12 to prevent gaps at the insertion point that could cause liquid backflow. A limiting groove 14 is provided on the side of the main partition 13 near the cooling pipe 1. During actual assembly, the cooling pipe 1 is inserted into the first slot 11. The limiting groove 14 prevents the cooling pipe 1 from being misaligned, ensuring that the cooling pipe 1 can be smoothly inserted into both the first slot 11 and the limiting groove 14. The insertion of the cooling pipe 1 is limited when it abuts against the main partition 13, preventing it from being inserted too deeply and affecting the flow of coolant.

[0047] The extension block 15 is integrally connected to both sides of the main partition 13. When the main partition 13 is inserted into the first slot 11, the extension block 15 abuts against the root of the side slot 12 to prevent leakage of internal coolant.

[0048] like Figure 4 , 5 As shown, the liquid return assembly includes a circulation pipe 24, a circulation groove 25, a second slot 26, and a sealing plug 27. The circulation groove 25 vertically penetrates the circulation pipe 24. The second slot 26 is opened on one side of the circulation pipe 24 and is connected to the circulation groove 25. The other side of the cooling pipe 1 is inserted into the second slot 26 and then fixed at the connection by welding. At this time, the circulation groove 25 is connected to the cooling groove 3 in the cooling pipe 1.

[0049] The sealing plugs 27 are attached to both sides of the circulation pipe 24 to seal the circulation groove 25 and prevent leakage of internal coolant.

[0050] The cooling pipe for battery heat dissipation of this utility model is made entirely of aluminum alloy. The pipe body is obtained by extrusion and bending. A three-meter profile is extruded and bent multiple times. The main partition 13 is inserted into the side slot 12. Then, one side of the cooling pipe 1 is inserted into the first slot 11 and the limiting slot 14. Finally, the other side of the cooling pipe 1 is inserted into the second slot 26. Finally, they are combined into a whole by brazing.

[0051] Coolant is introduced into the inlet channel of the inlet plate 9. The coolant flows through the inlet channel 6 above the cooling pipe 1 to the circulation tank 25, and then through the return channel 8 below the cooling pipe 1 back to the return channel of the inlet plate 9, finally being discharged. Once the coolant circulation is stable, the battery to be cooled can be inserted into the heat dissipation tank 2. Cooling is then applied to the three sides of the square battery through the cooling pipe 1, improving the battery's heat dissipation efficiency and shortening the cooling time.

[0052] The cooling pipe 1 is divided into an upper liquid inlet channel and a lower liquid return channel by the cooling baffle 4, instead of a whole left-in-right-out passage structure. By reducing the amount of water entering the first cooling pipe 1, the pressure is reduced, thereby reducing the impact on the first cooling pipe 1 and preventing the first cooling pipe 1 from deforming and breaking when subjected to large pressure, thus affecting its cooling effect.

[0053] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cooling pipe for battery heat dissipation, characterized in that, It includes: Cooling pipe (1), which is bent multiple times to form a heat dissipation groove (2) for inserting batteries; Cooling tank (3), the cooling tank (3) being shaped to fit through the cooling pipe (1); Liquid inlet assembly, which is fixed to one side of the cooling pipe (1) and connected to the cooling tank (3); A liquid return assembly is fixed on the other side of the cooling pipe (1) and connected to the cooling tank (3); The cooling pipe (1) cools the battery inserted in the heat sink (2) from three sides.

2. The cooling pipe for battery heat dissipation according to claim 1, characterized in that: The liquid inlet assembly includes a liquid inlet plate (9), a through groove (10) opened in the liquid inlet plate (9), a first slot (11) opened on one side of the liquid inlet plate (9) and connected to the through groove (10), and at least two liquid delivery pipes (16) fixed on the liquid inlet plate (9). One side of the cooling pipe (1) is inserted into the first slot (11) to connect the cooling tank (3) and the through groove (10).

3. A cooling pipe for battery heat dissipation according to claim 2, characterized in that: The liquid return assembly includes a circulation pipe (24), a circulation groove (25) opened in the circulation pipe (24), and a second slot (26) opened on one side of the circulation pipe (24) and connected to the circulation groove (25). The other side of the cooling pipe (1) is inserted into the second slot (26), thereby connecting the cooling groove (3) and the circulation groove (25).

4. A cooling pipe for battery heat dissipation according to claim 2, characterized in that: It also includes a cooling baffle (4) that is fixed in the cooling pipe (1) in a matching shape and divides the cooling tank (3) into an upper cooling tank and a lower cooling tank, a first baffle (5) that is fixed in the upper cooling tank in a matching shape and spaced apart, an inlet channel (6) formed between adjacent first baffles (5), a second baffle (7) that is fixed in the lower cooling tank in a matching shape and spaced apart, and a return channel (8) formed between adjacent second baffles (7).

5. A cooling pipe for battery heat dissipation according to claim 4, characterized in that: The liquid inlet assembly also includes a side slot (12) opened on one side of the liquid inlet plate (9) and connected to the through slot (10), a main partition plate (13) inserted in the side slot (12), and a limiting groove (14) opened on the side of the main partition plate (13) near the cooling pipe (1). One side of the cooling pipe (1) is inserted in the first slot (11) and abuts against the limiting groove (14). The main partition (13) divides the channel (10) into an upper liquid inlet channel and a lower liquid return channel. The liquid inlet channel is connected to the liquid inlet flow channel (6), and the liquid return channel is connected to the liquid return flow channel (8).

6. A cooling pipe for battery heat dissipation according to claim 2, characterized in that: The liquid inlet assembly also includes a liquid delivery trough (17) that passes through the liquid delivery pipe (16) and communicates with the through groove (10), a liquid delivery abutment plate (18) integrally connected to the periphery of the liquid delivery pipe (16) and abutting against the liquid inlet plate (9), a cover plate (22) fastened to both sides of the through groove (10), and a contact plate (23) integrally connected to the cover plate (22) and abutting against the liquid inlet plate (9).

7. A cooling pipe for battery heat dissipation according to claim 2, characterized in that: The liquid inlet assembly also includes at least two connecting pipes (19) fixed on the liquid inlet plate (9) and arranged opposite to the liquid delivery pipe (16), a pipe groove (20) that passes through the connecting pipe (19) and communicates with the through groove (10), and a connecting abutment plate (21) integrally connected to the periphery of the connecting pipe (19) and abutting against the liquid inlet plate (9).

8. A cooling pipe for battery heat dissipation according to claim 5, characterized in that: The thickness of the main partition (13) is equal to the height of the side slot (12).

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