High-power charging station liquid cooling system

Abstract

The utility model provides a high-power charging station liquid cooling system, and particularly relates to the technical field of new energy automobile charging pile cooling systems, the high-power charging station liquid cooling system comprises a water tank, cooling liquid is pressurized by a cooling liquid water pump, passes through a flow meter and then is divided into two paths to respectively enter a battery and a charging liquid cooling cable for heat exchange and cooling, and the cooling liquid is cooled. A cooling liquid pressure sensor detects the pressure of the cooling liquid and adjusts the flow of the cooling liquid, so that the cooled cooling liquid flows out to a second Y-shaped pipe and enters the heat exchanger, a cooling fan cools the heat exchanger, a liquid return temperature sensor detects the temperature of the cooled cooling liquid, and a liquid supply temperature sensor detects the temperature of the cooled cooling liquid after heat exchange; in the process, no refrigeration compressor system works, electric energy is saved, and the operation energy efficiency of the new energy storage charging station battery and the charging liquid cooling cable system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling systems for charging piles of new energy vehicles, and in particular to a liquid cooling system for a high-power charging station. Background Art

[0002] The current passed through a conventional DC charging gun is generally below 250A, while the current passed through a super-fast charging gun is generally around 500A. Therefore, high-current fast charging brings a significant increase in thermal effects. Continuous high temperatures can easily damage the electronic components of the charging device and even cause burnout accidents. To avoid safety accidents, the heat generated by the charging gun cable must be reduced, which is mainly achieved through air cooling and liquid cooling:

[0003] Air cooling: This combines an air cooling module with natural cooling of the charging cable, relying on heat exchange with air to lower the temperature. Given the trend toward high-voltage fast charging, continuing to use air cooling requires thicker copper wire. This increases costs and weight, making the charging cable heavier and more inconvenient to use and potentially hazardous. Furthermore, air cooling doesn't cool the cable core.

[0004] Liquid cooling: Using a liquid cooling module + liquid cooling gun line, the coolant (ethylene glycol, oil, etc.) flows through the liquid cooling cable to remove heat, allowing small-section cables to carry large currents with low temperature rise. On the one hand, it can enhance heat dissipation and improve safety; on the other hand, because the cable diameter is thinner, it can reduce weight and facilitate use. In addition, because there is no fan, the noise is relatively low.

[0005] Generally, new energy vehicle batteries require cooling liquid during operation. This is achieved by using the air conditioning system's compressor to compress the refrigerant and circulate the cooling water, which is then used to cool the batteries. However, continuous operation of the air conditioning system consumes a lot of electricity. Utility Model Content

[0006] The purpose of this utility model is to provide a high-power charging station liquid cooling system to solve the problem mentioned in the background art that the operating process of new energy vehicle batteries requires refrigeration liquid cooling, mainly using the air conditioning system compressor to compress the refrigerant to circulate the cooling water, and use the cold water to cool the batteries. However, the continuous operation of the air conditioning system consumes a lot of power.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: A high-power charging station liquid cooling system comprises a water tank, one side of the water tank is connected to a valve, the valve is connected to a coolant water pump through a pipeline, the outlet of the coolant water pump is connected to a first liquid supply pipe, the outer side of the first liquid supply pipe is connected to a coolant pressure sensor, one end of the first liquid supply pipe is connected to one end of a liquid inlet of a flow meter, one end of the liquid outlet of the flow meter is connected to a first Y-shaped tube, two liquid outlets of the first Y-shaped tube are respectively provided with a battery and a liquid cooling cable, a coil is provided on the outer side of the battery, one end of the coil is connected to the liquid outlet of the first Y-shaped tube, one end of the liquid outlet of the battery coil and the liquid cooling cable is connected to a second Y-shaped tube, the outer side of the liquid outlet port of the second Y-shaped tube is connected to a return liquid temperature sensor, the liquid outlet port of the second Y-shaped tube is connected to the liquid inlet of a heat exchanger, a cooling fan is fixedly connected to one side of the heat exchanger, the liquid outlet of the heat exchanger is connected to a second liquid supply pipe, and the outer side of the second liquid supply pipe is connected to a liquid supply temperature sensor.

[0008] Preferably, one end of the second liquid supply pipe is connected to the water tank.

[0009] Preferably, a slide groove is provided on the shell of the heat exchanger, a filter screen is slidably connected to the inner side of the slide groove, and a pin hole is provided on the outer side of the filter screen.

[0010] Preferably, the outer side of the filter screen is in contact with the inner side of the chute, and the filter screen is arranged on the air inlet side of the heat exchanger.

[0011] Preferably, a fixing bracket is fixedly connected to the outer side of the heat exchanger, a pull rod is slidably connected to the outer side of the fixing bracket, a fixing plate is fixedly connected to the outer side of the pull rod, and a spring is fixedly connected to one side of the fixing plate.

[0012] Preferably, the spring is sleeved on the outside of the pull rod, and the pull rod slides through one side of the heat exchanger shell.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the high-power charging station liquid cooling system is pressurized by the coolant pump and then divided into two paths after passing through the flow meter to enter the battery and the charging liquid cooling cable for heat exchange and cooling. The coolant pressure sensor detects the coolant pressure and adjusts the flow of the coolant water. The coolant after cooling flows out to the second Y-shaped tube and enters the heat exchanger. The heat dissipation fan cools the heat exchanger. The return liquid temperature sensor detects the coolant temperature after cooling, and the supply liquid temperature sensor detects the coolant temperature after heat exchange. The coolant flows into the water tank again. The temperature difference between the return liquid temperature sensor and the supply liquid temperature sensor can be used by the control system to adjust the speed of the heat dissipation fan and the flow of the coolant water pump. In this process, the refrigeration compressor system does not work, saving electricity. The energy efficiency of the battery and charging liquid cooling cable system of the new energy storage charging station is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model system;

[0015] Figure 2 This is a schematic diagram of the structure of the heat exchanger of the utility model;

[0016] Figure 3 This is a schematic diagram of the battery structure of the utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the figure: 1. Water tank; 2. Valve; 3. Coolant pump; 4. First liquid supply pipe; 5. Coolant pressure sensor; 6. Flow meter; 7. First Y-shaped tube; 8. Battery; 9. Liquid cooling cable; 10. Second Y-shaped tube; 11. Return liquid temperature sensor; 12. Heat exchanger; 13. Cooling fan; 14. Second liquid supply pipe; 15. Liquid supply temperature sensor; 16. Chute; 17. Filter; 18. Fixing bracket; 19. Pull rod; 20. Fixing plate; 21. Spring; 22. Pin hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0021] Example

[0022] See also Figure 1-4The utility model discloses a high-power charging station liquid cooling system: comprising a water tank 1, one side of the water tank 1 is connected to a valve 2, the valve 2 is connected to a coolant pump 3 through a pipeline, the outlet of the coolant pump 3 is connected to a first liquid supply pipe 4, the outer side of the first liquid supply pipe 4 is connected to a coolant pressure sensor 5, one end of the first liquid supply pipe 4 is connected to one end of the liquid inlet of a flow meter 6, one end of the liquid outlet of the flow meter 6 is connected to a first Y-shaped tube 7, and the two liquid outlets of the first Y-shaped tube 7 are respectively provided with A battery 8 and a liquid cooling cable 9 are placed, a coil is provided on the outside of the battery 8, one end of the coil is connected to the liquid outlet of the first Y-shaped tube 7, the coil of the battery 8 and one end of the liquid outlet of the liquid cooling cable 9 are connected to the second Y-shaped tube 10, the outer side of the liquid outlet port of the second Y-shaped tube 10 is connected to the return liquid temperature sensor 11, the liquid outlet port of the second Y-shaped tube 10 is connected to the liquid inlet of the heat exchanger 12, a cooling fan 13 is fixedly connected to one side of the heat exchanger 12, and the liquid outlet of the heat exchanger 12 is connected to the second Y-shaped tube 10. There are two liquid supply pipes 14, and a liquid supply temperature sensor 15 is connected to the outside of the second liquid supply pipe 14. When in use, the coolant is pressurized by the coolant water pump 3 and then passes through the flow meter 6 and is divided into two paths to enter the battery and the charging liquid cooling cable for heat exchange and cooling. The coolant pressure sensor 5 detects the coolant pressure and adjusts the flow of the coolant water 3. The coolant after cooling flows out to the second Y-shaped pipe 10 and enters the heat exchanger 12. The heat dissipation fan 13 cools the heat exchanger 12. The return liquid temperature sensor 11 detects the coolant temperature after cooling, and the supply liquid temperature sensor 15 detects the coolant temperature after heat exchange. The coolant flows into the water tank 1 again. The temperature difference between the return liquid temperature sensor 11 and the supply liquid temperature sensor 15 can be used by the control system to adjust the speed of the heat dissipation fan 13 and the flow of the coolant water pump 3. In this process, the refrigeration compressor system does not work, saving electricity. The energy efficiency of the battery and charging liquid cooling cable system of the new energy storage charging station is improved, and the battery 8 is provided on the outside.

[0023] Furthermore, one end of the second liquid supply pipe 14 is connected to the water tank 1 .

[0024] In order to facilitate the installation of the filter 17, a slide groove 16 is provided on the shell of the heat exchanger 12. The filter 17 is slidably connected to the inner side of the slide groove 16. A pin hole 22 is provided on the outer side of the filter 17. The filter 17 is slid into the slide groove 16. The setting of the filter 17 can prevent dust in the air from covering the surface of the heat exchanger 12.

[0025] Furthermore, the outer side of the filter screen 17 is in contact with the inner side of the chute 16 , and the filter screen 17 is arranged on the air inlet side of the heat exchanger 12 .

[0026] In order to facilitate the installation of the filter 17, a fixing frame 18 is fixedly connected to the outside of the heat exchanger 12, and a pull rod 19 is slidably connected to the outside of the fixing frame 18. A fixing plate 20 is fixedly connected to the outside of the pull rod 19, and a spring 21 is fixedly connected to one side of the fixing plate 20. When installing the filter 17, first pull the pull rod 19 to compress the spring 21. After the filter 17 completely slides into the slide groove 16, release the pull rod 19, and the spring 21 rebounds, so that one end of the pull rod 19 is inserted into the pin hole 22, thereby fixing the filter 17.

[0027] Furthermore, the spring 21 is sleeved on the outside of the pull rod 19 , and the pull rod 19 slides through one side of the shell of the heat exchanger 12 .

[0028] Working principle: When in use, the coolant is pressurized by the coolant pump 3 and then passes through the flow meter 6 and is divided into two paths to enter the battery and the charging liquid cooling cable for heat exchange and cooling. The coolant pressure sensor 5 detects the coolant pressure and adjusts the flow of the coolant water 3. The coolant after cooling flows out to the second Y-shaped tube 10 and enters the heat exchanger 12. The cooling fan 13 cools the heat exchanger 12. The return liquid temperature sensor 11 detects the coolant temperature after cooling, and the supply liquid temperature sensor 15 detects the coolant temperature after heat exchange. The coolant flows into the water tank 1 again. The return liquid temperature sensor 11 and the supply liquid temperature sensor 15 detect the coolant temperature after heat exchange. The temperature difference of the sensor 15 can be used by the control system to adjust the speed of the cooling fan 13 and the flow rate of the coolant pump 3. In this process, the refrigeration compressor system does not work, which saves electricity. The energy efficiency of the battery and charging liquid cooling cable system of the new energy storage charging station is improved. The filter 17 is slid into the slide 16. The setting of the filter 17 can prevent dust in the air from covering the surface of the heat exchanger 12. When installing the filter 17, first pull the pull rod 19 to compress the spring 21. After the filter 17 slides completely into the slide 16, release the pull rod 19 and the spring 21 rebounds, so that one end of the pull rod 19 is inserted into the pin hole 22, thereby fixing the filter 17.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these implementation rules without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-power charging station liquid cooling system, comprising a water tank (1), characterized in that: A valve (2) is connected to one side of the water tank (1), and the valve (2) is connected to a coolant water pump (3) through a pipeline. The liquid outlet of the coolant water pump (3) is connected to a first liquid supply pipe (4), and the outer side of the first liquid supply pipe (4) is connected to a coolant pressure sensor (5). One end of the first liquid supply pipe (4) is connected to one end of the liquid inlet of a flow meter (6), and one end of the liquid outlet of the flow meter (6) is connected to a first Y-shaped tube (7). The two liquid outlets of the first Y-shaped tube (7) are respectively provided with a battery (8) and a liquid cooling cable (9), and a coil is provided on the outer side of the battery (8). One end of the coil is connected to the liquid outlet of the first Y-shaped tube (7), one end of the liquid outlet of the coil of the battery (8) and the liquid cooling cable (9) is connected to the second Y-shaped tube (10), the outer side of the liquid outlet port of the second Y-shaped tube (10) is connected to a return liquid temperature sensor (11), the liquid outlet port of the second Y-shaped tube (10) is connected to the liquid inlet of the heat exchanger (12), one side of the heat exchanger (12) is fixedly connected to a heat dissipation fan (13), the liquid outlet of the heat exchanger (12) is connected to a second liquid supply tube (14), and the outer side of the second liquid supply tube (14) is connected to a liquid supply temperature sensor (15).

2. The high-power charging station liquid cooling system according to claim 1, characterized in that: One end of the second liquid supply pipe (14) is connected to the water tank (1).

3. The high-power charging station liquid cooling system according to claim 1, characterized in that: A slide groove (16) is provided on the shell of the heat exchanger (12), a filter screen (17) is slidably connected to the inner side of the slide groove (16), and a pin hole (22) is provided on the outer side of the filter screen (17).

4. The high-power charging station liquid cooling system according to claim 3, characterized in that: The outer side of the filter (17) is in contact with the inner side of the chute (16), and the filter (17) is arranged on the air inlet side of the heat exchanger (12).

5. The high-power charging station liquid cooling system according to claim 1, characterized in that: The outer side of the heat exchanger (12) is fixedly connected to a fixing frame (18), the outer side of the fixing frame (18) is slidably connected to a pull rod (19), the outer side of the pull rod (19) is fixedly connected to a fixing plate (20), and one side of the fixing plate (20) is fixedly connected to a spring (21).

6. The high-power charging station liquid cooling system according to claim 5, characterized in that: The spring (21) is sleeved on the outside of the pull rod (19), and the pull rod (19) slides through one side of the heat exchanger (12) shell.

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