Split type liquid cooling charging device
By designing a split liquid-cooled charging device in the charging device of the electric vehicle, and using the circulating cooling system and refrigeration module, the problem of difficult temperature control of the charging head and charging wire harness is solved, efficient cooling and energy-saving effects are achieved, and charging safety is improved.
Patent Information
- Application Number
- CN202421450022.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-24
AI Technical Summary
With the increase in charging current of electric vehicles, the temperature of the charging head and charging wire harness is difficult to control. Especially in summer, the air convection cooling method cannot meet the cooling requirements of high-power charging, resulting in heat accumulation, electrical failures and even burning, forcing the charging power to be reduced.
Design a split liquid-cooled charging device, by wrapping the cooling tube on the cable of the charging gun, and setting up a cooling mechanism on the side of the charging cabinet, including a liquid reservoir, coolant, refrigeration module, infusion pump, dispenser and collector The liquid container forms a circulating cooling system, which uses the refrigeration module to cool at high loads, and saves energy by air cooling at low loads.
Effectively reduce the temperature of the charging gun, avoid high temperature damaging the charging gun, improve charging safety, and select cooling methods according to the ambient temperature to achieve energy saving purposes.
Smart Images
Figure CN222512155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of charging devices, in particular to a split type liquid cooling charging device. Background Art
[0002] In recent years, the development of new energy vehicles is unstoppable. As the range of electric vehicles increases, it is necessary to increase the charging power to solve the problem of charging speed. At present, the voltage platform of electric vehicles cannot increase the charging power by increasing the charging voltage, so increasing the charging current has become an inevitable choice.
[0003] However, with the increase of charging current, the heat generated by various components increases greatly, especially the temperature of the charging head and charging harness is difficult to control. With the help of the air in the natural environment of the charging station, especially in summer, due to the high temperature in the natural environment in summer, air convection is obviously unable to meet the cooling needs of the charging gun during high-power charging. The accumulation of heat can cause electrical failures or even burning, so the charging power has to be reduced. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a split liquid-cooled charging device, which can cool multiple charging guns through a set of cooling mechanisms, thereby reducing the temperature of the charging guns and preventing high temperature from damaging the charging guns. At the same time, the cooling method for the coolant can be selected according to the outdoor temperature.
[0005] In order to achieve the above technical objectives, the utility model proposes the following technical solutions: a split liquid-cooled charging device, comprising a charging cabinet and a plurality of charging guns installed on the charging cabinet, the cables of the charging guns are wrapped with cooling tubes, a cooling mechanism is provided on one side of the charging cabinet, the cooling mechanism comprises a liquid reservoir, a coolant arranged in the liquid reservoir and a refrigeration module for cooling the coolant, the liquid outlet end of the liquid reservoir is connected to a liquid distributor through a liquid outlet pipeline, an infusion pump is provided on the liquid outlet pipeline, the input ends of the cooling tubes are respectively connected to the outlet ends of the liquid distributors, the output ends of the cooling tubes are connected to the liquid collectors, and the outlet end of the liquid collectors is connected to the liquid inlet end of the liquid reservoir through the refrigeration module.
[0006] Furthermore, the refrigeration module includes a compressor, a condenser, a liquid storage tank, a drying filter, an expansion valve and a coil heat exchanger in sequence, which are connected by a circulation pipeline. The coil heat exchanger is arranged in the liquid storage tank. A fan is provided on one side of the condenser. The condenser includes a first heat exchange element and a second heat exchange element. The first heat exchange element and the second heat exchange element are arranged in parallel and staggered. The inlet end of the first heat exchange element is connected to the outlet end of the liquid collector, and the outlet end of the first heat exchange element is connected to the inlet end of the liquid storage tank through a conveying pipeline. The inlet end of the second heat exchange element is connected to the outlet end of the compressor, and the outlet end of the second heat exchange element is connected to the inlet end of the liquid storage tank.
[0007] Furthermore, the first heat exchange component includes a first liquid distributor and a plurality of first heat exchange tubes, the inlet and outlet ends of the first heat exchange tube are both connected to the first liquid distributor, the second heat exchange component includes a second liquid distributor and a plurality of second heat exchange tubes, the inlet and outlet ends of the second heat exchange tube are both connected to the second liquid distributor, the first heat exchange tube and the second heat exchange tube are both U-shaped structures, the inlet and outlet of the first heat exchange tube on the first liquid distributor are not connected, and the inlet and outlet of the second heat exchange tube on the second liquid distributor are not connected.
[0008] Furthermore, a flow sensor, a solenoid valve and a temperature sensor are respectively arranged on the cooling pipe in sequence, and a liquid level switch is arranged on the liquid reservoir.
[0009] Furthermore, an adjustable overflow valve is provided on one side of the liquid outlet pipeline close to the liquid distributor, and the overflow valve is connected to the liquid reservoir through an overflow pipe.
[0010] Compared with the prior art, the beneficial effects produced by the utility model are: the utility model has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: a set of cooling mechanisms can be used to cool multiple charging guns, reduce the temperature of the charging guns, and avoid high temperature damage to the charging guns; the utility model can select different cooling methods according to actual conditions to achieve the purpose of energy saving; when the ambient temperature is low, the coolant is cooled by air cooling; when the ambient temperature and load are high, the refrigeration compressor participates in refrigeration to cool the coolant, and the cooled coolant can be heat exchanged with the cable on the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0012] Figure 2 It is a structural schematic diagram of the condenser of the utility model.
[0013] In the figure, 1. charging cabinet; 2. charging gun; 3. cooling pipe; 4. liquid reservoir; 5. liquid outlet pipeline; 6. liquid distributor; 7. infusion pump; 8. liquid collector; 9. compressor; 10. condenser; 11. liquid storage tank; 12. expansion valve; 13. coil heat exchanger; 14. circulation pipeline; 15. fan; 16. first heat exchange element; 161. first liquid distributor; 162. first heat exchange tube; 17. second heat exchange element; 171. second liquid distributor; 172. second heat exchange tube; 18. delivery pipeline; 19. flow sensor; 20. solenoid valve; 21. temperature sensor; 22. liquid level switch; 23. drying filter; 24. adjustable overflow valve; 25. overflow pipe; 26. pressure sensor. DETAILED DESCRIPTION
[0014] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.
[0015] like Figure 1 and 2 As shown, the utility model provides a split liquid-cooled charging device, including a charging cabinet 1 and a plurality of charging guns 2 installed on the charging cabinet 1, the cables of the charging guns 2 are all wound with cooling tubes 3, so as to increase the contact area between the cooling tubes 3 and the cables and increase the heat exchange effect, a cooling mechanism is provided on one side of the charging cabinet 1, the cooling mechanism includes a liquid reservoir 4, a coolant arranged in the liquid reservoir 4 and a refrigeration module for cooling the coolant, the liquid outlet end of the liquid reservoir 4 is connected to a liquid distributor 6 through a liquid outlet pipeline 5, an infusion pump 7 is provided on the liquid outlet pipeline 5, the input ends of the cooling tubes 3 are respectively connected to the outlet ends of the liquid distributor 6, the output ends of the cooling tubes 3 are connected to a liquid collector 8, the outlet end of the liquid collector 8 is connected to the liquid inlet end of the liquid reservoir 4 through a refrigeration module, a drain valve is provided at the bottom of the liquid reservoir 4, and the liquid reservoir 4 can be cleaned regularly.
[0016] like Figure 1 As shown, the utility model can cool multiple charging guns through a set of cooling mechanisms, reduce the temperature of the charging guns, and avoid high temperature damage to the charging guns; the coolant in the liquid reservoir 4 is cooled by the refrigeration module, and the cooled coolant is transported to the liquid distributor 6 by the infusion pump 7, and is evenly distributed to the cooling tube 3 by the liquid distributor 6 to cool the charging gun 2. After the coolant absorbs the heat of the charging gun 2, it enters the liquid collector 8, and is then cooled by the cooling mechanism. The cooled coolant is again transported to each cooling tube 3 by the infusion pump 7 to cool the charging gun 2.
[0017] The refrigeration module includes a compressor 9, a condenser 10, a liquid storage tank 11, a drying filter 23, an expansion valve 12 and a coil heat exchanger 13 in sequence, and the six are connected by a circulation pipeline 14. The coil heat exchanger 13 is arranged in the liquid storage tank 4. A fan 15 is provided on one side of the condenser 10. The condenser 15 includes a first heat exchange element 16 and a second heat exchange element 17. The first heat exchange element 16 and the second heat exchange element 17 are arranged in parallel and staggered. The inlet end of the first heat exchange element 16 is connected to the outlet end of the liquid collector 8, and the outlet end of the first heat exchange element 16 is connected to the inlet end of the liquid storage tank 4 through a conveying pipeline 18. The inlet end of the second heat exchange element 17 is connected to the outlet end of the compressor 9, and the outlet end of the second heat exchange element 17 is connected to the inlet end of the liquid storage tank 11.
[0018] like Figure 1As shown, the compressor 9, the condenser 10, the liquid storage tank 11, the drying filter 23, the expansion valve 12 and the coil heat exchanger 13 form a set of air conditioning refrigeration system. When the temperature and load in the outdoor environment are high, the refrigeration system can be used to cool the coolant in the liquid storage tank 4, that is, the refrigerant comes out of the compressor 9, passes through the second heat exchange element 17, the liquid storage tank 11, the expansion valve 12, the tube coil evaporator 13 in sequence, and finally flows through the compressor 9 again, and the cycle is repeated, and the coolant in the liquid storage tank 4 is cooled by the coil heat exchanger 13; when the temperature in the outdoor environment is low, the coolant that absorbs heat enters the first heat exchange element 16 from the liquid collector 8, and the heat of the coolant in the first heat exchange element 16 is blown away by the fan 15. After the coolant is cooled, it enters the liquid storage tank 4 along the delivery pipe 18. The utility model can select different cooling methods for the coolant according to actual conditions, so as to achieve the purpose of energy saving.
[0019] The first heat exchange component 16 includes a first liquid distributor 161 and a plurality of first heat exchange tubes 162, the inlet end of the first liquid distributor 162 is connected to the liquid collector 8, the outlet end of the second liquid distributor 162 is connected to the inlet end of the delivery pipeline 18, and both the inlet and outlet ends of the first heat exchange tube 162 are connected to the first liquid distributor 161. The second heat exchange component 17 includes a second liquid distributor 171 and a plurality of second heat exchange tubes 172, and both the inlet and outlet ends of the second heat exchange tube 172 are connected to the second liquid distributor 171. The first heat exchange tube 162 and the first heat exchange tube 172 are both U-shaped structures, and the inlet and outlet of the first heat exchange tube 162 on the first liquid distributor 161 are not connected, and the inlet and outlet of the second heat exchange tube 172 on the second liquid distributor 171 are not connected.
[0020] like Figure 2 As shown, the coolant enters from the inlet end of the first distributor tube 161, then flows to the first heat exchange tube 162 of the first group, and then flows from the outlet of the first heat exchange tube 162 of the first group to the first distributor tube 161, and then flows from the first distributor tube 162 to the first heat exchange tube 162 of the second group, and flows from the outlet end of the first heat exchange tube 162 of the second group to the first distributor tube 161, and thus flows back and forth to the third group, the fourth group, etc. The flow direction of the coolant in the first heat exchange element 16 is arranged in an S shape as a whole, and the fan 15 blows out the heat on the first heat exchange tube 162 to cool the coolant. Similarly, the refrigerant in the second heat exchange element 17 is also distributed in an S shape as a whole, which is conducive to the fan 15 blowing out the heat.
[0021] The cooling pipe 3 is provided with a flow sensor 19, a solenoid valve 20 and a temperature sensor 21 in sequence. The flow sensor 91 is used to detect whether the cooling pipe 3 is leaking or blocked. The temperature sensor 21 is arranged at one end of the cooling pipe 3 close to the liquid collector 8. The liquid reservoir 4 is provided with a liquid level switch 22 for detecting the coolant in the liquid reservoir 4. If the amount of coolant is small, the coolant can be added to the liquid reservoir 4 through the liquid filling port of the liquid reservoir 4.
[0022] like Figure 1 As shown, in the present invention, when the charging gun 2 is charging, the cable on the charging gun 2 generates heat, and the temperature sensor 21 is used to detect the temperature of the coolant in the cooling tube 3, that is, to detect the heat exchange effect between the coolant in the cooling tube 3 and the cable.
[0023] An adjustable overflow valve 24 is provided on one side of the liquid outlet pipeline 5 close to the liquid distributor 6 . The overflow valve 24 is connected to the liquid reservoir 4 through an overflow pipe 25 . A pressure sensor 26 is provided on the liquid distributor 6 .
[0024] like Figure 1 As shown, the pressure sensor 26 is used to detect the pressure of the coolant in the liquid distributor 6, and the adjustable overflow valve 24 can ensure the pressure in the liquid distributor 6.
[0025] Principle of use: During use, when the outdoor environment and load are high, the refrigerant is compressed by the compressor 9, enters the second liquid distributor 171 and the second heat exchange tube 172 along the circulation pipeline, exchanges heat with the outside air through the fan 15, the temperature of the refrigerant is reduced, and part of it is liquefied, and then enters the liquid storage tank 8, passes through the drying filter 23, and the high-temperature and high-pressure liquid refrigerant is throttled by the throttle hole of the expansion valve 12 to become a low-temperature and low-pressure mist-like hydraulic refrigerant, and enters the coil heat exchanger 13. The coil heat exchanger 13 absorbs the heat of the coolant in the liquid storage tank 4 to cool the coolant. The refrigerant flows along the circulation pipeline to the compressor 9 again, and the cooled coolant in the liquid storage tank 4 is transported to the distributor 6 by the infusion pump 7. The coolant in the distributor 6 is then dispersed into the cooling tube 3. The cooling tube 3 contacts the cable of the charging gun 2 and exchanges heat with the heat on the cable. Then the coolant flows into the collector 8 and then enters the first distributor 161 and the first heat exchange tube 162 from the collector 8. The coolant enters the reservoir 4 along the delivery pipe 18, and the cycle is repeated to cool the coolant through the refrigeration module. When the outdoor environment is low, the refrigeration compressor does not participate in cooling the coolant. The coolant is cooled by distributing the coolant to the first distributor 161 and the first heat exchange tube 162, and heat exchanging the first heat exchange tube 162 through the fan 15 to cool the coolant in the first heat exchange tube 162. The cooled coolant enters the reservoir 4 along the delivery pipe 18.
[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A split liquid-cooled charging device, characterized in that: The invention comprises a charging cabinet (1) and a plurality of charging guns (2) mounted on the charging cabinet (1), wherein the cables of the charging guns (2) are all wound with cooling tubes (3), and a cooling mechanism is provided on one side of the charging cabinet (1), wherein the cooling mechanism comprises a liquid reservoir (4), a coolant arranged in the liquid reservoir (4), and a refrigeration module for cooling the coolant, wherein the liquid outlet of the liquid reservoir (4) is connected to a liquid distributor (6) via a liquid outlet pipeline (5), and an infusion pump (7) is provided on the liquid outlet pipeline (5), the input ends of the cooling tubes (3) are respectively connected to the outlet ends of the liquid distributor (6), the output ends of the cooling tubes (3) are connected to a liquid collector (8), and the outlet end of the liquid collector (8) is connected to the liquid inlet end of the liquid reservoir (4) via the refrigeration module.
2. A split type liquid-cooled charging device according to claim 1, characterized in that: The refrigeration module comprises a compressor (9), a condenser (10), a liquid storage tank (11), a drying filter (23), an expansion valve (12) and a coil heat exchanger (13) in sequence, the six being connected via a circulation pipeline (14); the coil heat exchanger (13) being arranged in the liquid storage tank (4); a fan (15) being arranged on one side of the condenser (10); the condenser (10) comprising a first heat exchange element (16) and a second heat exchange element (17); the first heat exchange element (16) and the second heat exchange element (17) being arranged in parallel and staggered; the inlet end of the first heat exchange element (16) being connected to the outlet end of the liquid collector (8); the outlet end of the first heat exchange element (16) being connected to the inlet end of the liquid storage tank (4) via a delivery pipeline (18); the inlet end of the second heat exchange element (17) being connected to the outlet end of the compressor (9); and the outlet end of the second heat exchange element (17) being connected to the inlet end of the liquid storage tank (11).
3. A split type liquid-cooled charging device according to claim 2, characterized in that: The first heat exchange component (16) comprises a first liquid distributor (161) and a plurality of first heat exchange tubes (162), the inlet end and the outlet end of the first heat exchange tube (162) being connected to the first liquid distributor (161), the second heat exchange component (17) comprises a second liquid distributor (171) and a plurality of second heat exchange tubes (172), the inlet end and the outlet end of the second heat exchange tube (172) being connected to the second liquid distributor (171), the first heat exchange tube (162) and the second heat exchange tube (172) both being U-shaped structures, the inlet and outlet of the first liquid distributor (161) and located on the first heat exchange tube (162) are not connected, and the inlet and outlet of the second liquid distributor (171) and located on the second heat exchange tube (172) are not connected.
4. A split type liquid-cooled charging device according to claim 1, characterized in that: The cooling pipe (3) is provided with a flow sensor (19), a solenoid valve (20) and a temperature sensor (21) in sequence, and the liquid reservoir (4) is provided with a liquid level switch (22).
5. The split type liquid cooling charging device according to claim 1, characterized in that: An adjustable overflow valve (24) is provided on one side of the liquid outlet pipeline (5) close to the liquid distributor (6); the overflow valve (24) is connected to the liquid reservoir (4) via an overflow pipe (25); and a pressure sensor (26) is provided on the liquid distributor (6).