Battery thermal control device based on heat pipe heat exchange

Abstract

A battery thermal control device based on heat pipe heat exchange comprises a heat pipe, a cooling part and a heat exchange part, the plurality of heat pipes are uniformly arranged on the vertical side wall of the battery shell along the edge track of the battery shell, the evaporation sections of the heat pipes are connected with the side wall of the battery shell, the condensation sections of the heat pipes are positioned above the evaporation sections, and the condensation sections are not in contact with the battery shell; the heat exchange part is arranged on the condensation section of the heat pipe; and the cooling part is arranged on the vehicle body frame and is connected with the heat exchange part. According to the utility model, the cooling efficiency of the battery shell is improved.

Description

Technical Field

[0001] This utility model relates to a thermal control device, and more particularly to a device capable of cooling down a battery at high temperatures, belonging to the technical field of battery cooling thermal control equipment. Background Technology

[0002] With the rapid growth of the new energy vehicle market, users are constantly raising their requirements for new energy vehicles in terms of range, fast charging, safety, and lifespan, which places higher demands on the performance of power batteries. Currently, high-temperature battery management mainly uses methods such as liquid cooling or direct cooling to cool batteries under high temperatures. However, current cooling technologies have poor heat dissipation efficiency, cannot cool high-temperature batteries in a timely manner, and consume a lot of energy. Therefore, a more efficient heat dissipation device is needed, which can quickly cool the high temperature of the battery. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery thermal control device based on heat pipe heat exchange, which can efficiently cool the battery.

[0004] The problem described in this utility model is solved by the following technical solution:

[0005] A battery thermal control device based on heat pipe heat exchange includes heat pipes, a cooling section, and a heat exchange section. Multiple heat pipes are evenly distributed along the edge of the battery casing on its vertical sidewall. The evaporation section of the heat pipe is connected to the sidewall of the battery casing, and the condensation section of the heat pipe is located above the evaporation section and does not contact the battery casing. The heat exchange section is disposed on the condensation section of the heat pipe. The cooling section is disposed on the vehicle frame and connected to the heat exchange section.

[0006] The aforementioned battery thermal control device based on heat pipe heat exchange includes a heat exchange section comprising a square outer frame, a square inner frame, a frame-shaped bottom sealing plate, a frame-shaped top sealing plate, and a frame-shaped heat exchange plate. The square inner frame is located inside the square outer frame, and the frame-shaped top sealing plate is located at the top of the square outer and inner frames. The frame-shaped bottom sealing plate is located at the bottom of the square outer and inner frames. The square outer frame, square inner frame, frame-shaped bottom sealing plate, and frame-shaped top sealing plate together form a sealed frame-shaped cavity. The frame-shaped bottom sealing plate has multiple holes, the number of which corresponds to the number of heat pipes. Each hole contains a corresponding heat pipe, and sealant is applied between the hole and the heat pipe. The frame-shaped heat exchange plate is located within the sealed frame-shaped cavity formed by the square outer frame, square inner frame, frame-shaped bottom sealing plate, and frame-shaped top sealing plate. The outer wall of each heat pipe is connected to the inner wall of the frame-shaped heat exchange plate.

[0007] The aforementioned battery thermal control device based on heat pipe heat exchange includes a cooling section comprising a compressor, a condenser, an expansion valve, and an evaporator. The compressor outlet is connected to the condenser inlet via a pipe; the condenser outlet is connected to the expansion valve inlet via a pipe; the expansion valve outlet is connected to the evaporator inlet via a pipe; and the evaporator outlet is connected to the compressor inlet via a pipe. The refrigerant circulates within the compressor, condenser, expansion valve, and evaporator via pipes. Air inlets are located at both ends of the frame-shaped top sealing plate. The fan on the evaporator is connected to an air supply duct, and the ends of the air supply duct branch off and connect to two air inlets on the frame-shaped top sealing plate.

[0008] The aforementioned battery thermal control device based on heat pipe heat exchange has an air outlet on the side wall of the square outer frame, a one-way valve at the air outlet, and the air outlet is connected to the outside of the vehicle body through an air outlet pipe.

[0009] This invention achieves cooling of the high temperature of the battery casing by attaching a heat pipe to the outer wall of the battery casing. The heat pipe transfers the heat of the battery casing to the top. The top of the heat pipe is surrounded by a cavity formed by a square outer frame, a square inner frame, a frame-shaped bottom sealing plate, and a frame-shaped top sealing plate. The cooling part injects cooling gas into the cavity to cool the top of the heat pipe, which accelerates the absorption of heat from the battery casing by the heat pipe. The frame-shaped heat exchange plate is attached to the top of the outer wall of the heat pipe, which accelerates the cooling efficiency of the condensation section at the top of the heat pipe. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention after removing the square outer frame and the square inner frame;

[0011] Figure 2 This is a partially enlarged structural diagram of component A of this utility model;

[0012] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0013] The list of labels in the diagram is as follows: 1. Heat pipe, 2. Square outer frame, 3. Square inner frame, 4. Frame-shaped bottom sealing plate, 5. Frame-shaped top sealing plate, 6. Frame-shaped heat exchange plate, 7. Air inlet. Detailed Implementation

[0014] See Figure 1 , 2 and Figure 3This invention includes a heat pipe 1, a cooling section, and a heat exchange section. Multiple heat pipes 1 are evenly distributed along the edge of the battery casing on its vertical sidewall, surrounding the casing and cooling the casing body. The evaporation section of the heat pipe 1 is connected to the sidewall of the battery casing, while the condensation section is located above the evaporation section and does not contact the battery casing. In the evaporation section, the working fluid absorbs heat and undergoes a phase change from liquid to gas. The gaseous working fluid flows to the condensation section under pressure difference. In the condensation section, the gaseous working fluid releases heat and condenses back to liquid. The liquid working fluid flows back to the evaporation section by gravity, completing one cycle. In other words, the evaporation section of the heat pipe absorbs heat at the battery casing, and the condensation section releases heat at the heat exchange section. The heat exchange section is located on the condensation section of the heat pipe 1. The cooling section is located on the vehicle frame and connected to the heat exchange section. The cooperation of the cooling section and the heat exchange section efficiently cools the condensation section of the heat pipe.

[0015] The heat exchange section includes a square outer frame 2, a square inner frame 3, a frame-shaped bottom sealing plate 4, a frame-shaped top sealing plate 5, and a frame-shaped heat exchange plate 6. The square inner frame 3 is located inside the square outer frame 2, and the frame-shaped top sealing plate 5 is located at the top of the square outer frame 2 and the square inner frame 3. The frame-shaped bottom sealing plate 4 is located at the bottom of the square outer frame 2 and the square inner frame 3. The square outer frame 2, the square inner frame 3, the frame-shaped bottom sealing plate 4, and the frame-shaped top sealing plate 5 together form a sealed frame-shaped cavity. The frame-shaped bottom sealing plate 4 is provided with multiple holes, and the number of holes is the same as the number of heat pipes 1. Each hole is fitted with a corresponding heat pipe 1, and a sealant is applied between the hole and the heat pipe 1. The condensation section of the heat pipe 1 is located within a sealed frame-shaped cavity. When cold air is injected into the sealed frame-shaped cavity, it cools the condensation section of the heat pipe 1. The frame-shaped heat exchange plate 6 is located within the sealed frame-shaped cavity composed of a square outer frame 2, a square inner frame 3, a frame-shaped bottom sealing plate 4, and a frame-shaped top sealing plate 5. The outer wall of each heat pipe 1 is connected to the inner wall of the frame-shaped heat exchange plate 6. The frame-shaped heat exchange plate 6 accelerates the cooling efficiency of the condensation section of the heat pipe 1 and increases the heat dissipation area of ​​the condensation section of the heat pipe 1.

[0016] The cooling section includes a compressor, a condenser, an expansion valve, and an evaporator; the compressor outlet is connected to the condenser inlet via a pipe; the condenser outlet is connected to the expansion valve inlet via a pipe; the expansion valve outlet is connected to the evaporator inlet via a pipe; the evaporator outlet is connected to the compressor inlet via a pipe; the refrigerant circulates within the compressor, condenser, expansion valve, and evaporator via pipes; the frame-shaped top sealing plate 5 has air inlet ports 7 at both ends; the fan on the evaporator is connected to the air supply pipe, and the end of the air supply pipe branches off and connects to the two air inlet ports 7 on the frame-shaped top sealing plate 5 respectively; the compressor is responsible for compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant; the compressor draws in low-temperature, low-pressure refrigerant gas from the evaporator and... The refrigerant gas is compressed using piston or scroll compression methods to increase its pressure and temperature, and then discharged into the condenser. The main function of the condenser is to condense the high-temperature, high-pressure gaseous refrigerant into a high-temperature, high-pressure liquid refrigerant. After flowing out of the condenser, the high-temperature, high-pressure liquid refrigerant enters the expansion valve. In the expansion valve, the pressure and temperature of the refrigerant rapidly decrease, becoming a low-temperature, low-pressure liquid refrigerant. The main function of the evaporator is to evaporate the low-temperature, low-pressure liquid refrigerant into a gaseous refrigerant, while absorbing heat from the indoor air. The evaporator, together with its fan, sends cold air into the sealed frame-shaped cavity composed of a square outer frame 2, a square inner frame 3, a frame-shaped bottom sealing plate 4, and a frame-shaped top sealing plate 5. The cold air cools the condensing section of the heat pipe 1 within the cavity.

[0017] An air outlet is provided on the side wall of the square outer frame 2. A one-way valve is provided at the air outlet. The air outlet is connected to the outside of the vehicle body through an air outlet pipe. Cold air absorbs heat in the sealed frame cavity and is heated before being discharged from the vehicle body.

Claims

1. A battery thermal control device based on heat pipe heat exchange, characterized in that: It includes a heat pipe (1), a cooling section and a heat exchange section; there are multiple heat pipes (1), which are evenly arranged on the vertical sidewall of the battery housing along the edge trajectory. The evaporation section of the heat pipe (1) is connected to the sidewall of the battery housing, and the condensation section of the heat pipe (1) is located above the evaporation section and does not contact the battery housing; the heat exchange section is arranged on the condensation section of the heat pipe (1); the cooling section is arranged on the vehicle frame and is connected to the heat exchange section.

2. The battery thermal control device based on heat pipe heat exchange according to claim 1, characterized in that: The heat exchange section includes a square outer frame (2), a square inner frame (3), a frame-shaped bottom sealing plate (4), a frame-shaped top sealing plate (5), and a frame-shaped heat exchange plate (6); the square inner frame (3) is located inside the square outer frame (2), and the frame-shaped top sealing plate (5) is located at the top of the square outer frame (2) and the square inner frame (3), while the frame-shaped bottom sealing plate (4) is located at the bottom of the square outer frame (2) and the square inner frame (3). The square outer frame (2), square inner frame (3), frame-shaped bottom sealing plate (4), and frame-shaped top sealing plate (6) are connected together. 5) Together they form a sealed frame-shaped cavity; the frame-shaped bottom sealing plate (4) is provided with multiple holes, and the number of holes is the same as the number of heat pipes (1). Each hole is filled with a heat pipe (1) corresponding to its position, and a sealant is provided between the hole and the heat pipe (1); the frame-shaped heat exchange plate (6) is located in the sealed frame-shaped cavity composed of the square outer frame (2), the square inner frame (3), the frame-shaped bottom sealing plate (4) and the frame-shaped top sealing plate (5); the outer wall of each heat pipe (1) is connected to the inner wall of the frame-shaped heat exchange plate (6).

3. The battery thermal control device based on heat pipe heat exchange according to claim 2, characterized in that: The cooling section includes a compressor, a condenser, an expansion valve, and an evaporator; the compressor outlet is connected to the condenser inlet via a pipe; the condenser outlet is connected to the expansion valve inlet via a pipe; the expansion valve outlet is connected to the evaporator inlet via a pipe; the evaporator outlet is connected to the compressor inlet via a pipe; the refrigerant circulates within the compressor, condenser, expansion valve, and evaporator via pipes; the frame-shaped top sealing plate (5) has air inlet ports (7) at both ends; the fan on the evaporator is connected to the air supply pipe, and the end of the air supply pipe branches off and connects to the two air inlet ports (7) on the frame-shaped top sealing plate (5).

4. The battery thermal control device based on heat pipe heat exchange according to claim 3, characterized in that: An air outlet is provided on the side wall of the square outer frame (2), and a one-way valve is provided at the air outlet. The air outlet is connected to the outside of the vehicle body through an air outlet pipe.

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