Liquid cooling cable structure

Abstract

The invention discloses a liquid cooling cable structure which comprises a cooling tank, a refrigerant is arranged in an inner cavity of the cooling tank close to the top, an evaporator is arranged in the refrigerant, a circulating pump is arranged in the inner cavity of the cooling tank close to the center, a compressor is arranged at the bottom of the circulating pump, and the refrigerant is conveyed into a cooling medium inlet pipeline in a cable through the circulating pump. A sealing device is additionally arranged at the charging gun, the refrigerant flows back into a cooling medium backflow pipeline through a pipeline, the backflow refrigerant flows into a cooling tank, the refrigerant heated by the cable is cooled by a cooling device, and the cooled refrigerant is input into the cable through a circulating pump to continue to work; the temperature measuring device in the charging gun sends temperature data to the controller at the circulating pump device, the controller adjusts the flow and the flow velocity of a refrigerant conveyed by the circulating pump according to the fed-back temperature, and the stability of high-current work of the high-power cooling cable is guaranteed through the whole device.

Description

Technical Field

[0001] The present invention relates to the technical field of cables for liquid-cooled charging guns, and in particular to a liquid-cooled cable structure. Background Art

[0002] As new energy electric vehicles have huge development prospects and huge market sales statistics in the automobile market, the performance requirements of new energy vehicles are getting higher and higher, and the charging equipment supporting electric vehicles has also been vigorously developed. The liquid-cooled charging guns on the market can fully charge your car in a short time.

[0003] However, there are some problems in the use of the existing liquid-cooled cable structure. The existing liquid-cooled cable structure is not convenient for recycling the refrigerant. When the charging gun is in use, the cable will heat up, and the refrigerant will cool the temperature of the cable. The refrigerant itself will be heated, which is not convenient for cooling the heated refrigerant. At the same time, it is not convenient to control the flow rate and flow velocity of the refrigerant, which will affect the stability of the cable operation. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a liquid-cooled cable structure. The main key indicators of the liquid-cooled cable are the selection of liquid medium, the support and corrosion resistance of the liquid flow pipeline, the flow rate and flow adjustment of the coolant, and the sealing of the cable end during actual use.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a liquid-cooled cable structure, comprising a cooling tank, a refrigerant is arranged near the top of the inner cavity of the cooling tank, an evaporator is arranged in the refrigerant, a circulating pump is arranged near the center of the inner cavity of the cooling tank, and a compressor is arranged at the bottom of the circulating pump.

[0006] Preferably, a cable is provided on the right side of the cooling tank, and a charging gun is fixedly connected to the right end of the cable.

[0007] Preferably, the cable inner cavity is provided with a cooling medium reflux channel, and the cable inner cavity is provided with a cooling medium inlet channel.

[0008] Preferably, the left end of the cable is fixedly connected to a transverse tube, the top of the transverse tube is fixedly connected to an L-shaped tube, the transverse tube and the inner cavity of the L-shaped tube are arranged to penetrate each other, the end of the L-shaped tube away from the transverse tube is fixedly connected to a connecting tube, the left end of the connecting tube is fixedly connected to one side of the cooling tank, the left end of the transverse tube is fixedly connected to a fixed tube, the end of the fixed tube away from the transverse tube is fixedly connected to one side of the circulating pump, the top of the circulating pump is fixedly connected to a vertical tube, and the top of the vertical tube is fixedly connected to one side of the cooling tank.

[0009] Preferably, the compressor and the evaporator match each other.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The refrigerant of the present invention is transported into the cooling medium in the cable through a circulating pump and enters the pipeline, taking away the heat generated by the cable during operation. A sealing device is installed at the charging gun, and the refrigerant flows back into the cooling medium return pipeline through the pipeline. The returned refrigerant flows into the cooling tank, and the cooling device is used to cool the refrigerant heated by the cable. The cooled refrigerant is then input into the cable through the circulating pump to continue working. The temperature measuring device inside the charging gun sends the temperature data to the controller at the circulating pump device. The controller adjusts the flow rate and flow velocity of the refrigerant transported by the circulating pump according to the feedback temperature, and the stability of the high-current operation of the high-power cooling cable is guaranteed by the whole set of devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the present invention;

[0013] Figure 2 for Figure 1 Schematic diagram of the AA structure.

[0014] Numbers in the figure: 1. Cooling tank; 2. Refrigerant; 3. Evaporator; 4. Compressor; 5. Circulation pump; 6. Cable; 7. Charging gun; 8. Cooling medium return channel; 9. Cooling medium inlet channel; 10. Connecting pipe; 11. L-shaped pipe; 12. Horizontal pipe; 13. Fixed pipe; 14. Vertical pipe. DETAILED DESCRIPTION

[0015] See also Figure 1-2 The present invention provides a technical solution: a liquid cooling cable structure, including a cooling tank 1, a refrigerant 2 is provided near the top of the inner cavity of the cooling tank 1, an evaporator 3 is provided in the refrigerant 2, a circulating pump 5 is provided near the center of the inner cavity of the cooling tank 1, a compressor 4 is provided at the bottom of the circulating pump 5, a cable 6 is provided on the right side of the cooling tank 1, a charging gun 7 is fixedly connected to the right end of the cable 6, a cooling medium reflux channel 8 is provided in the inner cavity of the cable 6, a cooling medium inlet channel 9 is provided in the inner cavity of the cable 6, a cross pipe 12 is fixedly connected to the left end of the cable 6, and the cross pipe 1 An L-shaped tube 11 is fixedly connected to the top, the transverse tube 12 and the inner cavity of the L-shaped tube 11 are mutually connected, the end of the L-shaped tube 11 away from the transverse tube 12 is fixedly connected to the connecting tube 10, the left end of the connecting tube 10 is fixedly connected to one side of the cooling tank 1, the left end of the transverse tube 12 is fixedly connected to the fixed tube 13, the end of the fixed tube 13 away from the transverse tube 12 is fixedly connected to one side of the circulating pump 5, the top of the circulating pump 5 is fixedly connected to the vertical tube 14, the top of the vertical tube 14 is fixedly connected to one side of the cooling tank 1, and the compressor 4 and the evaporator 3 match each other;

[0016] The selection of refrigerant medium, the properties of refrigerant 2 are the primary key. It is necessary to ensure that the cooling liquid is not corrosive to the liquid flow pipeline, and has a large heat carrying capacity, which can effectively take away the heat generated by the conductor when it is energized. At the same time, refrigerant 2 has good insulation properties. Automobile refrigerant 2 can be selected. Through cooperation with universities, a suitable flow medium (large heat carrying capacity and low corrosion to the pipeline) is selected to ensure good physical properties of the pipeline;

[0017] The design of the cooling pipe: the charging cable 6 has no fixed bending direction during actual use. The cooling pipe is a hollow structure and is easily squeezed and deformed when twisted, thereby affecting the flow of the refrigerant 2. Therefore, the support of the coolant pipe is very important. A high-hardness TPU pipe is selected to improve the support of the refrigerant 2 return pipe, ensuring that the pipe can quickly recover to its original state after being bent and squeezed, ensuring the smooth flow of the refrigerant 2.

[0018] Calculation of the flow and flow rate of the refrigerant 2. The development of the high-power charging cable 6 mainly relies on the flow of the refrigerant 2 to carry away the heat generated by the conductor being energized, thereby improving the current-carrying capacity of the cable 6. Therefore, the calculation and design of the flow and flow rate of the refrigerant 2 are very important for improving the current-carrying capacity. It is necessary to cooperate with a third-party unit to design a matching circulating pump 5, select a suitable cooling medium, calculate the heating conditions of the conductor operation and the heat that the cooling medium needs to take away, and then obtain the required flow rate, flow rate and other data.

[0019] Working principle: The refrigerant 2 is transported into the cooling medium in the cable 6 through the circulating pump 5 and enters the pipeline 9, taking away the heat generated by the cable 6 during operation. A sealing device is installed at the charging gun 7, and the refrigerant 2 flows back through the pipeline into the cooling medium return pipeline 8. The returned refrigerant 2 flows into the cooling tank 1, and the cooling device is used to cool the refrigerant 2 heated by the cable 6. The cooled refrigerant 2 is then input into the cable 6 through the circulating pump 5 to continue working. The temperature measuring device inside the charging gun 7 sends the temperature data to the controller at the circulating pump 5 device. The controller adjusts the flow rate and flow velocity of the refrigerant 2 transported by the circulating pump 5 according to the feedback temperature, and the stability of the high-current operation of the high-power cooling cable 6 is guaranteed through the whole set of devices.

Claims

1. A liquid-cooled cable structure, comprising a cooling tank (1), characterized in that: A refrigerant (2) is arranged near the top of the inner cavity of the cooling tank (1), an evaporator (3) is arranged in the refrigerant (2), a circulating pump (5) is arranged near the center of the inner cavity of the cooling tank (1), and a compressor (4) is arranged at the bottom of the circulating pump (5).

2. A liquid cooling cable structure according to claim 1, characterized in that: A cable (6) is provided on the right side of the cooling tank (1), and a charging gun (7) is fixedly connected to the right end of the cable (6).

3. A liquid cooling cable structure according to claim 1, characterized in that: The inner cavity of the cable (6) is provided with a cooling medium return channel (8), and the inner cavity of the cable (6) is provided with a cooling medium inlet channel (9).

4. A liquid cooling cable structure according to claim 1, characterized in that: The left end of the cable (6) is fixedly connected to a transverse tube (12), the top of the transverse tube (12) is fixedly connected to an L-shaped tube (11), the inner cavities of the transverse tube (12) and the L-shaped tube (11) are mutually interpenetrating, the end of the L-shaped tube (11) away from the transverse tube (12) is fixedly connected to a connecting tube (10), the left end of the connecting tube (10) is fixedly connected to one side of a cooling tank (1), the left end of the transverse tube (12) is fixedly connected to a fixed tube (13), the end of the fixed tube (13) away from the transverse tube (12) is fixedly connected to one side of a circulation pump (5), the top of the circulation pump (5) is fixedly connected to a vertical tube (14), the top of the vertical tube (14) is fixedly connected to one side of the cooling tank (1).

5. The liquid cooling cable structure according to claim 1, characterized in that: The compressor (4) and the evaporator (3) match each other.

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