New energy battery pack cooling structure

Abstract

The utility model discloses a new energy battery pack cooling structure, which relates to the field of battery pack cooling and heat dissipation, and comprises a bottom plate and a battery pack, the upper end of the bottom plate is fixedly connected with a cooling plate, the battery pack is arranged at the upper end of the cooling plate, and the right side of the battery pack is provided with a liquid cooling mechanism. Heat conducting plates are fixedly connected to the four side faces of the battery pack, a plurality of sets of cooling fins are fixedly connected to the outer sides of the four heat conducting plates, first fans are arranged on the lower sides of the cooling fins on the left side and the right side, and second fans are arranged at the lower ends of the cooling fins on the front side and the rear side. According to the battery pack heat dissipation device, working heat of the battery pack can be quickly conducted out, meanwhile, heat dissipation treatment is conducted on the heat dissipation fins through the fan, the heat dissipation efficiency of the heat conduction plate and the heat dissipation fins is improved, and meanwhile, after cold air with the low temperature moves upwards along with the fan and makes contact with the heat dissipation fins, the heat dissipation efficiency of the heat dissipation fins is further improved.

Description

Technical Field

[0001] The utility model relates to the field of battery pack cooling and heat dissipation, and in particular to a new energy battery pack cooling structure. Background Art

[0002] New energy vehicles refer to vehicles that utilize new on-board power devices, advanced integrated drive technologies, and new structures. In the manufacture of new energy vehicles, battery packs are generally used. After long-term use of the battery pack, the temperature of the battery pack will rise. In order to ensure the normal use of the battery pack, people generally cool the battery pack to dissipate heat.

[0003] The commonly used basic cooling methods are divided into two types: liquid cooling and air cooling. In the traditional cooling method, a liquid cooling plate is usually arranged at the bottom of the battery pack. There is a liquid channel in the liquid cooling plate. The heat is taken away by the liquid in the liquid channel. However, the liquid cooling plate is cooled at the bottom of the battery pack. The cold air with lower temperature is always in the lower part, and the hot air with higher temperature is always in the upper part. There is no heat exchange in between, so the situation of the battery pack being cold at the bottom and hot at the top will be maintained for a long time. The cooling effect of the battery pack is not ideal. Based on this, this scheme provides a new energy battery pack cooling structure to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the above technical problems, a new energy battery pack cooling structure is provided. The technical solution solves the problem that the liquid cooling plate proposed in the above background technology is used for cooling at the bottom of the battery pack, and the cold air with lower temperature is always in the lower part, and the hot air with higher temperature is always in the upper part, and there is no heat exchange in between, so the situation of the battery pack being cold at the bottom and hot at the top will be maintained for a long time, and the cooling effect of the battery pack is not ideal.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A new energy battery pack cooling structure comprises a base plate and a battery pack, wherein the upper end of the base plate is fixedly connected to a cooling plate, the battery pack is mounted on the upper end of the cooling plate, a liquid cooling mechanism is arranged on the right side of the battery pack, the four side surfaces of the battery pack are fixedly connected to heat conducting plates, the outer sides of the four heat conducting plates are fixedly connected to a plurality of groups of heat dissipating fins, a fan 1 is arranged on the lower side of the heat dissipating fins on the left and right sides, a fan 2 is arranged on the lower end of the heat dissipating fins on the front and rear sides, the fan 1 is fixedly mounted on the upper end of a mounting frame 1, the mounting frame 1 is fixedly connected to the upper end of the cooling plate, the fan 2 is fixedly mounted on the upper end of a mounting frame 2, and the mounting frame 2 is respectively fixedly connected to the front and rear ends of the cooling plate.

[0007] Preferably, the liquid cooling mechanism includes a cooling water tank and a circulating pump, both of which are arranged on the right side of the battery pack and fixedly installed on the upper end of the base plate. A refrigeration component is arranged inside the cooling water tank, the input end of the circulating pump is connected to the interior of the liquid cooling mechanism, and the output end of the circulating pump is connected to connecting pipe 1.

[0008] Preferably, the other end of the connecting tube is connected to the heat exchange tube, and the heat exchange tube is provided in a plurality of groups, and the plurality of groups of heat exchange tubes are all arranged inside the cooling plate.

[0009] Preferably, a plurality of installation grooves are provided inside the cooling plate, and heat exchange tubes are fixedly installed inside the installation grooves.

[0010] Preferably, the heat exchange tube is connected to another heat exchange tube through a U-shaped connecting tube, the right end of the rearmost heat exchange tube is connected to the left end of connecting tube 2, and the other end of connecting tube 2 is connected to the cooling water tank.

[0011] Preferably, the inner wall of the heat exchange tube is provided with a vortex groove.

[0012] Compared with the prior art, the utility model proposes a new energy battery pack cooling structure, which has the following beneficial effects:

[0013] 1. The utility model is provided with a liquid cooling mechanism, in which the cooled liquid is pumped out from the cooling water tank by a circulation pump, and passed into the heat exchange tube through the connecting pipe 1, the heat exchange tube exchanges heat with the cooling plate, and then enters the second heat exchange tube through the U-shaped connecting pipe. After moving several times, it returns to the cooling water tank through the connecting pipe 2. The cooling water tank is equipped with a refrigeration component for cooling the liquid after the heat exchange, thereby forming a cycle to achieve heat dissipation for the battery pack.

[0014] 2. In the utility model, a vortex groove is provided inside the heat exchange tube, which can increase the turbulence in the tube, thereby enhancing the heat conduction effect. The existence of the vortex groove can break the laminar flow state of the fluid, prompting the fluid to contact the tube wall more fully, increase the heat exchange area, and improve the performance and efficiency of the heat exchange tube.

[0015] 3. In the utility model, a heat conducting plate and heat dissipating fins are arranged on the outside of the battery pack, which can quickly conduct heat out. At the same time, cold air with a lower temperature is always in the cooling plate and blown upward by a number of sets of fans, so as to dissipate heat on the heat dissipating fins, so that the heat can be quickly dissipated, thereby improving the heat dissipation efficiency of the heat conducting plate and the heat dissipating fins. At the same time, the cold air with a lower temperature moves upward with the fan, and after contacting the heat dissipating fins, the heat dissipation efficiency of the heat dissipating fins is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the liquid cooling mechanism in the utility model;

[0018] Figure 3 It is a cross-sectional view of the internal structure of the heat exchange tube in the utility model.

[0019] The numbers in the figure are:

[0020] 1. Base plate; 2. Battery pack; 3. Cooling plate; 301. Mounting slot; 4. Heat conduction plate; 5. Heat dissipation fins; 6. Mounting frame 1; 7. Fan 1; 8. Mounting frame 2; 9. Fan 2; 10. Liquid cooling mechanism; 1001. Cooling water tank; 1002. Circulation pump; 1003. Heat exchange tube; 1004. Connecting tube 1; 1005. U-shaped connecting tube; 1006. Connecting tube 2; 1007. Eddy current groove. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Reference Figure 1-3 As shown, a new energy battery pack cooling structure includes a base plate 1 and a battery pack 2, the upper end of the base plate 1 is fixedly connected with a cooling plate 3, the battery pack 2 is installed on the upper end of the cooling plate 3, a liquid cooling mechanism 10 is arranged on the right side of the battery pack 2, the four side surfaces of the battery pack 2 are fixedly connected with heat conducting plates 4, the outer sides of the four heat conducting plates 4 are fixedly connected with a plurality of groups of heat dissipating fins 5, the lower sides of the heat dissipating fins 5 on the left and right sides are provided with fans 1 7, the lower ends of the heat dissipating fins 5 on the front and rear sides are provided with fans 2 9, the fan 1 7 is fixedly installed on the upper end of the mounting frame 1 6, the mounting frame 1 6 is fixedly connected to the upper end of the cooling plate 3, the fan 2 9 is fixedly installed on the upper end of the mounting frame 2 8, and the mounting frame 2 8 is respectively fixedly connected to the front and rear ends of the cooling plate 3. A heat conducting plate 4 and heat dissipating fins 5 are provided on the outside of the battery pack 2, which can quickly dissipate heat. At the same time, cold air with a lower temperature is always on the cooling plate 3 and blown upward by several groups of fans, so as to dissipate heat on the heat dissipating fins 5, so that the heat can be quickly dissipated, thereby improving the heat dissipation efficiency of the heat conducting plate 4 and the heat dissipating fins 5. At the same time, the cold air with a lower temperature moves upward with the fan, and after contacting the heat dissipating fins 5, the heat dissipation efficiency of the heat dissipating fins 5 is further improved.

[0023] Specifically, in this embodiment, the liquid cooling mechanism 10 includes a cooling water tank 1001 and a circulating pump 1002. The cooling water tank 1001 and the circulating pump 1002 are both arranged on the right side of the battery pack 2 and fixedly installed on the upper end of the base plate 1. A refrigeration component is arranged inside the cooling water tank 1001. The input end of the circulating pump 1002 is connected to the interior of the liquid cooling mechanism 10, and the output end of the circulating pump 1002 is connected to the connecting pipe 1004.

[0024] Specifically, in this embodiment, the other end of the connecting tube 1004 is connected to the heat exchange tube 1003 , and the heat exchange tube 1003 is provided in a plurality of groups, and the plurality of groups of heat exchange tubes 1003 are all provided inside the cooling plate 3 .

[0025] Specifically, in this embodiment, a plurality of installation grooves 301 are provided inside the cooling plate 3 , and heat exchange tubes 1003 are fixedly installed inside the installation grooves 301 .

[0026] Specifically, in this embodiment, the heat exchange tube 1003 is connected to another heat exchange tube 1003 through a U-shaped connecting tube 1005, and the right end of the rear heat exchange tube 1003 is connected to the left end of the second connecting tube 1006, and the other end of the second connecting tube 1006 is connected to the cooling water tank 1001. The device is provided with a liquid cooling mechanism 10, and the cooled liquid is pumped out from the cooling water tank 1001 through a circulation pump 1002, and is passed into the heat exchange tube 1003 through the connecting tube 1 1004. The heat exchange tube 1003 exchanges heat with the cooling plate 3, and then enters the second heat exchange tube 1003 through the U-shaped connecting tube 1005. After multiple movements, it returns to the cooling water tank 1001 through the connecting tube 2 1006. A refrigeration component is installed in the cooling water tank 1001 to cool the liquid after heat exchange, thereby forming a cycle to achieve heat dissipation of the battery pack 2.

[0027] Specifically, in this embodiment, the inner wall of the heat exchange tube 1003 is provided with a vortex groove 1007. The vortex groove 1007 is provided inside the heat exchange tube 1003, which can increase the turbulence in the tube, thereby enhancing the heat conduction effect. The presence of the vortex groove can break the laminar flow state of the fluid, promote the fluid to contact the tube wall more fully, increase the heat exchange area, and improve the performance and efficiency of the heat exchange tube.

[0028] The working principle of the utility model is as follows: when the battery pack 2 works for a long time, the battery pack 2 will emit a large amount of heat, and then part of the heat is absorbed by the heat conduction plates 4 on the four sides and dissipated through the heat dissipation fins 5, and the other part is absorbed by the cooling plate 3 and exchanges heat with the heat exchange tube 1003 in the liquid cooling mechanism 10. The liquid cooling mechanism 10 extracts the cooled liquid from the cooling water tank 1001 through the circulation pump 1002, and passes the cooled liquid into the heat exchange tube 1003 through the connecting tube 1004. The heat exchange tube 1003 exchanges heat with the cooling plate 3, and then enters the second heat exchange tube 1003 through the U-shaped connecting tube 1005. After moving for many times, it returns to the cooling water tank 1001 through the connecting tube 2 1006. The cooling water tank 1001 is equipped with a refrigeration component for cooling the liquid after the heat exchange, thereby forming a cycle to achieve heat dissipation for the battery pack 2.

[0029] At the same time, the heat is quickly discharged from the outside of the battery pack 2 through the heat conduction plate 4 and the heat dissipation fins 5. At the same time, the cold air with a lower temperature is always on the cooling plate 3 and blown upward by several groups of fans, so as to dissipate the heat of the heat dissipation fins 5, so that the heat can be quickly dissipated, thereby improving the heat dissipation efficiency of the heat conduction plate 4 and the heat dissipation fins 5. At the same time, the cold air with a lower temperature moves upward with the fan, and after contacting the heat dissipation fins 5, the heat dissipation efficiency of the heat dissipation fins 5 is further improved.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new energy battery pack cooling structure, characterized in that: The invention comprises a base plate (1) and a battery pack (2), wherein the upper end of the base plate (1) is fixedly connected to a cooling plate (3), the battery pack (2) is mounted on the upper end of the cooling plate (3), a liquid cooling mechanism (10) is arranged on the right side of the battery pack (2), the four side surfaces of the battery pack (2) are fixedly connected to heat conducting plates (4), the outer sides of the four heat conducting plates (4) are fixedly connected to a plurality of groups of heat dissipating fins (5), the lower sides of the heat dissipating fins (5) on the left and right sides are provided with a fan 1 (7), the lower ends of the heat dissipating fins (5) on the front and rear sides are provided with a fan 2 (9), the fan 1 (7) is fixedly mounted on the upper end of a mounting frame 1 (6), the mounting frame 1 (6) is fixedly connected to the upper end of the cooling plate (3), the fan 2 (9) is fixedly mounted on the upper end of a mounting frame 2 (8), and the mounting frame 2 (8) is respectively fixedly connected to the front and rear ends of the cooling plate (3).

2. A new energy battery pack cooling structure according to claim 1, characterized in that: The liquid cooling mechanism (10) comprises a cooling water tank (1001) and a circulating pump (1002). The cooling water tank (1001) and the circulating pump (1002) are both arranged on the right side of the battery pack (2) and fixedly mounted on the upper end of the bottom plate (1). A refrigeration component is arranged inside the cooling water tank (1001). The input end of the circulating pump (1002) is connected to the inside of the liquid cooling mechanism (10), and the output end of the circulating pump (1002) is connected to the connecting pipe 1 (1004).

3. A new energy battery pack cooling structure according to claim 2, characterized in that: The other end of the connecting pipe (1004) is connected to the heat exchange tube (1003), and the heat exchange tube (1003) is provided in a plurality of groups, and the plurality of groups of heat exchange tubes (1003) are all arranged inside the cooling plate (3).

4. The new energy battery pack cooling structure according to claim 1, characterized in that: A plurality of groups of mounting grooves (301) are provided inside the cooling plate (3), and heat exchange tubes (1003) are fixedly installed inside the mounting grooves (301).

5. The new energy battery pack cooling structure according to claim 3 is characterized in that: The heat exchange tube (1003) is connected to another heat exchange tube (1003) via a U-shaped connecting tube (1005), and the right end of the heat exchange tube (1003) on the rear side is connected to the left end of the second connecting tube (1006), and the other end of the second connecting tube (1006) is connected to the cooling water tank (1001).

6. A new energy battery pack cooling structure according to claim 3, characterized in that: The inner wall of the heat exchange tube (1003) is provided with a vortex groove (1007).

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