Vehicle end charging cooling device, pile end charging cooling device and charging cooling system

Abstract

The utility model discloses a vehicle end charging cooling device, a pile end charging cooling device and a charging cooling system, and relates to the technical field of new energy vehicles. The vehicle end charging cooling device comprises a vehicle end refrigerant circulation loop composed of a first condenser, a first compressor, a first tee joint, a first heat exchanger, a first expansion valve and a second tee joint which are sequentially and circularly connected. And the vehicle end cooling liquid loop comprises a first vehicle end interface, a first heat exchanger, a battery water pump, a battery cooling piece and a second vehicle end interface which are connected in sequence. An evaporator and a second expansion valve are sequentially connected between the first tee joint and the second tee joint. The first vehicle end interface can be connected with a first pile end connector arranged on the charging pile and transmit cooling liquid. Therefore, the device can adjust the temperature of the battery and the passenger compartment through the compressor and the evaporator during charging, and can exchange cooling liquid with the charging pile.

Description

Technical Field

[0001] This specification relates to the field of new energy vehicle technology, and in particular to a vehicle-side charging cooling device, a charging pile-side charging cooling device, and a charging cooling system. Background Technology

[0002] In recent years, the development of charging piles has been rapid, and charging power has gradually increased. Superchargers typically have a charging power of over 250kW, with some even reaching a peak power of 800kW. However, this increase in charging power has also led to a sharp increase in heat generation from new energy vehicles during the charging process.

[0003] Compared to passenger vehicles, new energy commercial vehicles have longer charging times due to their larger battery packs. This causes heat to gradually accumulate during prolonged charging, eventually leading to overheating and current limiting in the battery and / or charging station. Ultimately, this reduces the charging rate, increases charging waiting time, lowers the operating efficiency of a single vehicle, and increases the payback period per vehicle. Utility Model Content

[0004] This specification provides a vehicle-side charging cooling device, a charging pile-side charging cooling device, and a charging cooling system to at least partially solve the aforementioned problems existing in the prior art.

[0005] The following technical solution is adopted in this specification:

[0006] This specification provides a vehicle-side charging cooling device, characterized in that it includes a vehicle-side refrigerant circulation circuit and a vehicle-side coolant circuit.

[0007] The refrigerant circulation loop at the vehicle end includes a first condenser, a first compressor, a first three-way valve, a first heat exchanger, a first expansion valve, and a second three-way valve connected in sequence; an evaporator and a second expansion valve are also connected in sequence between the first three-way valve and the second three-way valve.

[0008] The vehicle-end coolant circuit includes a first vehicle-end interface, a first heat exchanger, a battery water pump, a battery cooling component, and a second vehicle-end interface connected in sequence.

[0009] The first vehicle-end interface can be connected to the first terminal connector of the charging pile and transmit coolant through the first terminal connector.

[0010] The second vehicle-end interface can connect to the second terminal connector of the charging pile and transmit coolant through the second terminal connector; the coolant transmitted by the first vehicle-end interface and the second vehicle-end interface flows in opposite directions.

[0011] Preferably, both the first expansion valve and the second expansion valve are connected to the vehicle control center;

[0012] Both the first expansion valve and the second expansion valve can respond to commands sent by the vehicle control center to adjust the valve opening and the power of the second compressor, thereby adjusting the flow rate of the refrigerant flowing through the first expansion valve and the second expansion valve.

[0013] The vehicle control center and the vehicle-side charging and cooling device both belong to the same vehicle.

[0014] On the other hand, this specification provides a pile-end charging cooling device, including a pile-end refrigerant circulation loop and a pile-end coolant loop.

[0015] The refrigerant circulation loop at the pile end includes a second compressor, a second condenser, a third expansion valve, and a second heat exchanger connected in sequence.

[0016] The pile end cooling fluid circuit includes a first pile end connector, a second heat exchanger, a second pile end connector connected in sequence, and a charging device cooling component; the charging device cooling component is disposed between the first pile end connector and the second heat exchanger, or the charging device cooling component is disposed between the second heat exchanger and the second pile end connector;

[0017] The first pile end connector can be connected to the first vehicle end interface configured on the vehicle and transmit coolant through the first vehicle end interface;

[0018] The second pile end connector can connect to the second vehicle end interface configured on the charging pile and transmit coolant through the second vehicle end interface; the coolant transmitted by the first pile end connector and the second pile end connector flows in opposite directions.

[0019] Preferably, a No. 3 three-way valve is also provided between the first pile end connector and the charging device cooling component;

[0020] A No. 4 tee is also provided between the cooling component of the charging device and the second heat exchanger;

[0021] The No. 3 three-way valve is also connected to the No. 4 three-way valve;

[0022] The No. 3 three-way valve can control the flow rate of coolant to the No. 4 three-way valve and to the cooling component of the charging device, respectively.

[0023] Preferably, the number of cooling components in the charging device is multiple;

[0024] Different charging device cooling components correspond to different heating elements of the charging pile; the heating elements include transformers and / or charging cables and / or charging guns.

[0025] Preferably, the third expansion valve, the third three-way valve, and the second compressor can be connected to the vehicle control center of the vehicle being charged, and receive instructions sent by the vehicle control center to adjust the opening degree of the valves and the power of the second compressor, thereby adjusting the flow rate of the refrigerant or coolant flowing through them.

[0026] On the other hand, this specification provides a charging cooling system, including the vehicle-side charging cooling device provided in the above-mentioned aspect and the charging pile-side charging cooling device provided in the above-mentioned aspect.

[0027] The first pile end connector is connected to the first vehicle end interface;

[0028] The second pile end connector is connected to the second vehicle end interface.

[0029] Preferably, both the first expansion valve and the second expansion valve are open;

[0030] The refrigerant can flow along the first compressor and the first condenser to the second three-way valve, where it splits into two paths. One path flows through the first expansion valve and the first heat exchanger to the first three-way valve and back to the first compressor. The other path flows through the second expansion valve and the evaporator and back to the first compressor. The first heat exchanger cools the coolant while the evaporator cools the passenger compartment.

[0031] The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first terminal connector, the second heat exchanger, the second terminal connector, the second vehicle end interface, and the battery cooling components, and flow back to the battery water pump to complete the cooling of the battery.

[0032] Preferably, the first expansion valve is open, the second expansion valve is closed, and the third expansion valve is open;

[0033] The refrigerant of the vehicle-side charging cooling device can flow along the first compressor, the first condenser, the second three-way valve, the first expansion valve, the first heat exchanger, and the first three-way valve, and then flow back to the first compressor.

[0034] The refrigerant in the charging cooling device can flow along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger, and then flow back to the second compressor.

[0035] The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first pile end connector, the second heat exchanger, the second pile end connector, the second vehicle end interface, and the battery cooling components, and flow back to the battery water pump. At the same time, it cools the battery through the vehicle end refrigerant circulation loop and the pile end refrigerant circulation loop.

[0036] Preferably, the first expansion valve is open, the second expansion valve is closed, and the third expansion valve is open;

[0037] The refrigerant of the vehicle-side charging cooling device can flow along the first compressor, the first condenser, the second three-way valve, the first expansion valve, the first heat exchanger, and the first three-way valve, and then flow back to the first compressor.

[0038] The refrigerant in the charging cooling device can flow along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger, and then flow back to the second compressor.

[0039] The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first pile end connector, the charging device cooling component, the second heat exchanger, the second pile end connector, the second vehicle end interface, and the battery cooling component, and flow back to the battery water pump. At the same time, it cools the charging device cooling component and the battery through the vehicle end refrigerant circulation loop and the pile end refrigerant circulation loop.

[0040] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:

[0041] In the above embodiment, the vehicle-side charging cooling device includes a vehicle-side refrigerant circulation loop and a vehicle-side coolant loop. The vehicle-side refrigerant circulation loop includes a first condenser, a first compressor, a first three-way valve, a first heat exchanger, a first expansion valve, and a second three-way valve connected in sequence. An evaporator and a second expansion valve are also connected in sequence between the first and second three-way valves. The vehicle-side coolant loop includes a first vehicle-side interface, a first heat exchanger, a battery water pump, a battery cooling component, and a second vehicle-side interface connected in sequence. The first vehicle-side interface can connect to a first terminal connector of a charging pile and transmit coolant through the first terminal connector; the second vehicle-side interface can connect to a second terminal connector of a charging pile and transmit coolant through the second terminal connector; the flow directions of the coolant transmitted through the first and second vehicle-side interfaces are opposite.

[0042] As can be seen from the above, the vehicle-side charging cooling device can not only cool the battery through compressor cooling during charging, but also adjust the temperature of the passenger compartment through evaporator. Furthermore, the vehicle-side coolant circuit can exchange coolant with the charging pile. Attached Figure Description

[0043] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0044] Figure 1 A schematic diagram of the architecture of a vehicle-side charging cooling device provided for one embodiment of this specification;

[0045] Figure 2 A schematic diagram of the architecture of a charging cooling device for a pile end provided as an embodiment of this specification;

[0046] Figure 3 A schematic diagram of the architecture of a charging cooling system provided for one embodiment of this specification;

[0047] Figure 4 A schematic diagram of a cooling process provided for one embodiment of this specification;

[0048] Figure 5 A schematic diagram of a cooling process provided for one embodiment of this specification;

[0049] Figure 6 A schematic diagram of a cooling process provided for one embodiment of this specification;

[0050] Figure 7 A schematic diagram of a cooling process provided for one embodiment of this specification;

[0051] Figure 8 A schematic diagram of a cooling process provided for one embodiment of this specification;

[0052] Figure 9 This is a schematic diagram of a cooling process provided for one embodiment of this specification.

[0053] Explanation of reference numerals in the attached figures:

[0054] First condenser 12; First compressor 13; No. 1 tee 14; Evaporator 15; Second expansion valve 16; No. 2 tee 17; First expansion valve 18; First heat exchanger 19; Battery cooling component 20; Battery water pump 21; First vehicle end interface 23; First terminal connector 24; No. 3 tee valve 25; Charging device cooling component 26; No. 4 tee 27; Second terminal connector 28; Second vehicle end interface 29; Second heat exchanger 30; Second compressor 31; Second condenser 32; Third expansion valve 33. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0056] In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or" unless otherwise expressly stated in the content.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0058] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0059] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0060] Figure 1 A schematic diagram of the architecture of a vehicle-side charging cooling device is provided as an embodiment of this specification, such as... Figure 1 As shown, the vehicle-side charging and cooling device includes a vehicle-side refrigerant circulation loop and a vehicle-side coolant loop. The vehicle-side refrigerant circulation loop includes a first condenser 12, a first compressor 13, a first three-way valve 14, a first heat exchanger 19, a first expansion valve 18, and a second three-way valve 17 connected in sequence. An evaporator 15 and a second expansion valve 16 are connected in sequence between the first three-way valve 14 and the second three-way valve 17. The vehicle-side coolant loop includes a first vehicle-side interface 23, a first heat exchanger 19, a battery water pump 21, a battery cooling component 20, and a second vehicle-side interface 29 connected in sequence. The L end of the first three-way valve 14 is connected to the first compressor 13, the K end to the evaporator 15, and the J end to the first heat exchanger 19. The G end of the second three-way valve 17 is connected to the first expansion valve 18, the H end to the second expansion valve 16, and the I end to the first condenser 12.

[0061] Preferably, the flow rate of refrigerant flowing to the first expansion valve 18 and the second expansion valve 16 can be adjusted by adjusting the opening degree of the first expansion valve 18 and the second expansion valve 16.

[0062] Preferably, the vehicle-side charging and cooling device includes a vehicle-side refrigerant circulation circuit and a vehicle-side coolant circuit.

[0063] Preferably, the refrigerant circulation loop at the vehicle end includes a first condenser 12, a first compressor 13, a first three-way valve 14, a first heat exchanger 19, a first expansion valve 18, and a second three-way valve 17 connected in sequence, and an evaporator 15 and a second expansion valve 16 are connected in sequence between the first three-way valve 14 and the second three-way valve 17.

[0064] Preferably, the vehicle-end coolant circuit includes a first vehicle-end interface 23, a first heat exchanger 19, a battery water pump 21, a battery cooling component 20, and a second vehicle-end interface 29 connected in sequence.

[0065] Preferably, the battery cooling element 20 is disposed inside or outside the battery and can be in close contact with the battery cells inside the battery to dissipate heat from the battery.

[0066] Preferably, the first vehicle-end interface 23 can be connected to the first terminal connector 24 configured in the charging pile and transmit coolant through the first terminal connector 24.

[0067] Preferably, the second vehicle-end interface 29 can be connected to the second terminal connector 28 configured on the charging pile, and coolant is transmitted through the second terminal connector 28. It should be noted that the flow direction of the coolant transmitted by the first vehicle-end interface 23 and the second vehicle-end interface 29 is opposite. That is, if coolant flows out of the first vehicle-end interface 23, coolant flows into the second vehicle-end interface 29.

[0068] In the above embodiment, the vehicle-side charging cooling device includes a vehicle-side refrigerant circulation loop and a vehicle-side coolant loop. The vehicle-side refrigerant circulation loop includes a first condenser 12, a first compressor 13, a first three-way valve 14, a first heat exchanger 19, a first expansion valve 18, and a second three-way valve 17 connected in sequence. An evaporator 15 and a second expansion valve 16 are also connected in sequence between the first three-way valve 14 and the second three-way valve 17. The vehicle-side coolant loop includes a first vehicle-side interface 23, a first heat exchanger 19, a battery water pump 21, a battery cooling component 20, and a second vehicle-side interface 29 connected in sequence. The first vehicle-side interface 23 can connect to a first terminal connector 24 of the charging pile and transmit coolant through the first terminal connector 24. The second vehicle-side interface 29 can connect to a second terminal connector 28 of the charging pile and transmit coolant through the second terminal connector 28. The coolant flows in opposite directions to those transmitted through the first vehicle-side interface 23 and the second vehicle-side interface 29.

[0069] As can be seen from the above, the vehicle-side charging cooling device can not only cool the battery through the compressor during charging, but also adjust the temperature of the passenger compartment through the evaporator 15. Furthermore, the vehicle-side coolant circuit can also exchange coolant with the charging pile.

[0070] Preferably, the vehicle-side charging cooling device is installed inside the new energy commercial vehicle.

[0071] Those skilled in the art will understand that charging stations with a charging power of 200 kW or higher are typically classified as superchargers. These high-power superchargers generate significant heat when charging vehicles. For typical passenger cars, due to their smaller battery capacity (generally only 10-80 kWh), superchargers can often complete charging within 20 minutes. In this case, the temperature rise of the passenger car battery is usually limited, and heat dissipation is sufficient thanks to the vehicle's own thermal management system.

[0072] However, for new energy commercial vehicles, the battery capacity is relatively large, typically exceeding 300 kWh. This means that charging at superchargers often requires more than an hour. Under these conditions, the battery temperature can rise dramatically, making it difficult for the vehicle's thermal management system alone to effectively dissipate heat. Therefore, the vehicle-side charging cooling device provided in this manual can transfer coolant to the charging station, utilizing the station's cooling structure to further cool the coolant and improve battery cooling efficiency.

[0073] Typically, new energy commercial vehicles are equipped with a vehicle control center.

[0074] Preferably, the first expansion valve 18, the second three-way valve 17, and the second expansion valve 16 are all connected to the vehicle control center of the new energy commercial vehicle.

[0075] Preferably, the first expansion valve 18, the second three-way valve 17, and the second expansion valve 16 can all respond to commands sent by the vehicle control center, adjusting their opening degrees to adjust the flow rate and volume of the refrigerant flowing through the first expansion valve 18 and the second expansion valve 16, thereby adjusting the cooling effect on the battery and the passenger compartment. Furthermore, the vehicle control center and the vehicle-side charging and cooling device belong to the same vehicle.

[0076] The above are one or more embodiments of the vehicle-side charging cooling device provided in this specification. Based on the same idea, this specification also provides a charging pile-side cooling device.

[0077] Figure 2 A schematic diagram of the structure of a charging cooling device at the pile end is provided for one embodiment of this specification, as shown below. Figure 2As shown, the pile-end charging cooling device includes a pile-end refrigerant circulation loop and a pile-end coolant loop. The pile-end refrigerant circulation loop includes a second compressor 31, a second condenser 32, a third expansion valve 33, and a second heat exchanger 30 connected in sequence. The pile-end coolant loop includes a first pile-end connector 24, a charging device cooling component 26, the second heat exchanger 30, and a second pile-end connector 28 connected in sequence. It should be noted that the charging device cooling component 26 can also be configured between the second heat exchanger 30 and the second pile-end connector 28.

[0078] Preferably, the pile-end charging and cooling device includes a pile-end refrigerant circulation loop and a pile-end coolant loop.

[0079] Preferably, the refrigerant circulation loop at the pile end includes a second compressor 31, a second condenser 32, a third expansion valve 33, and a second heat exchanger 30 connected in sequence.

[0080] Preferably, the first terminal connector 24 can be connected to the first vehicle end interface 23 configured on the vehicle and transmit coolant through the first vehicle end interface 23.

[0081] Preferably, the second terminal connector 28 can be connected to the second vehicle-end interface 29 configured on the charging pile and transmit coolant through the second vehicle-end interface 29, and the flow direction of the coolant transmitted by the first terminal connector 24 and the second terminal connector 28 is opposite.

[0082] Preferably, the charging device cooling component 26 is disposed between the first pile end connector 24 and the second heat exchanger 30, and a No. 3 three-way valve 25 is also disposed between the first pile end connector 24 and the charging device cooling component 26, and a No. 4 three-way valve 27 is also disposed between the charging device cooling component 26 and the second heat exchanger 30, and the No. 3 three-way valve 25 is also connected to the No. 4 three-way valve 27.

[0083] The No. 3 three-way valve 25 can control the flow rate of coolant flowing to the No. 4 three-way valve 27 and to the cooling component 26 of the charging device, respectively.

[0084] Preferably, end A of the three-way valve 25 is connected to the first terminal connector 24, end B is connected to the charging device cooling component 26, end C is connected to end E of the four-way valve 27, end D of the four-way valve 27 is also connected to the charging device cooling component 26, and end F of the four-way valve 27 is connected to the second heat exchanger 30. Coolant flows into end A from the first terminal connector 24. The opening degree of ends B and C of the three-way valve 25 can be controlled, thereby controlling the flow rate of coolant through the charging device cooling component 26.

[0085] Preferably, there are multiple cooling components 26 for the charging device, and different cooling components 26 correspond to different heating elements of the charging pile. These heating elements include transformers and / or charging cables and / or charging guns, etc.

[0086] Preferably, the third expansion valve 33, the third three-way valve 25, and the second compressor 31 can all be connected to the vehicle control center of the vehicle being charged and receive instructions sent by the vehicle control center to adjust the opening degree, thereby adjusting the flow rate of the refrigerant or coolant flowing through them.

[0087] The above are one or more embodiments of the charging cooling device provided in this specification. Based on the same idea, this specification also provides a charging cooling system.

[0088] Figure 3 A schematic diagram of the architecture of a charging and cooling system provided in one embodiment of this specification is shown below. Figure 3 As shown, the charging cooling system includes the vehicle-side charging cooling device and the charging pile-side charging cooling device provided in any of the above embodiments.

[0089] Preferably, the first pile end connector 24 is connected to the first vehicle end interface 23, and the second pile end connector 28 is connected to the second vehicle end interface 29.

[0090] Preferably, the first pile end connector 24 is connected to the second vehicle end interface 29, and the second pile end connector 28 is connected to the first vehicle end interface 23.

[0091] In this specification, the connection between the first pile end connector 24 and the first vehicle end interface 23 is used as an example for illustration.

[0092] Preferably, the vehicle-end coolant circuit and the pile-end coolant circuit can be combined into a charging coolant circulation circuit. That is, when the first pile-end connector 24 is connected to the first vehicle-end interface 23 and the second pile-end connector 28 is connected to the second vehicle-end interface 29, the charging coolant circulation circuit is closed.

[0093] Preferably, in this charging coolant circulation loop, the coolant can circulate along the first heat exchanger 19, the first vehicle end interface 23, the first terminal connector 24, the second heat exchanger 30, the second terminal connector 28, the second vehicle end interface 29, the battery cooling component 20, and the battery water pump 21. After flowing through the first terminal connector 24, the coolant can also flow through the third three-way valve 25, where it is split. One path flows directly to the fourth three-way valve 27, and the other path flows through the charging device cooling component 26 before converging into the fourth three-way valve 27. The coolant then flows to the second heat exchanger 30 through the fourth three-way valve 27.

[0094] Preferably, when the first compressor 13 or the second compressor 31 is operating, the coolant can cool the battery as it flows through the battery cooling element 20. The battery is in close contact with the battery cooling element 20.

[0095] Preferably, when the first compressor 13 is operating, the refrigerant can cool the passenger compartment as it flows through the evaporator 15.

[0096] Preferably, when it is determined that the battery needs cooling and the passenger compartment needs refrigeration, the first expansion valve 18 and the second expansion valve 16 can be controlled to open, with end C open and end B closed, and the first compressor 13 and the battery water pump 21 can be operated. Then, the refrigerant can flow along the first compressor 13 and the first condenser 12 to the second tee 17, where it splits into two paths; one path flows through the first expansion valve 18 and the first heat exchanger 19 to the first tee 14 and back to the first compressor 13; the other path flows through the second expansion valve 16 and the evaporator 15 and back to the first compressor 13. The refrigerant cools the coolant through the first heat exchanger 19 and also refrigerates the passenger compartment through the evaporator 15. The coolant flows along the fluid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle end interface 29, and the battery cooling component 20, and then flows back to the battery water pump 21, thus completing the cooling of the battery. Figure 4 As shown, Figure 4 This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0097] Preferably, when it is determined that the battery has a cooling requirement, and the vehicle-side compressor's cooling is insufficient to meet the requirement, the first expansion valve 18 can be opened, the second expansion valve 16 closed, and the third expansion valve 33 opened, with end C open and end B closed. This also controls the operation of the first compressor 13, the second compressor 31, and the battery water pump 21. Thus, the refrigerant from the vehicle-side charging cooling device can flow along the first compressor 13, the first condenser 12, the second three-way valve 17, the first expansion valve 18, the first heat exchanger 19, and the first three-way valve 14, and return to the first compressor 13. Similarly, the refrigerant from the charging terminal cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and return to the second compressor 31. The coolant can flow along the fluid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle-end interface 29, and the battery cooling component 20, and flow back to the battery water pump 21. Simultaneously, it cools the battery through the vehicle-end refrigerant circulation loop and the terminal refrigerant circulation loop. Figure 5 As shown, Figure 5 This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0098] Preferably, when it is determined that both the battery and the charging pile have cooling requirements, and the vehicle-side compressor cooling is insufficient to meet the battery's requirements, the first expansion valve 18 can be opened, the second expansion valve 16 closed, and the third expansion valve 33 opened, with end B open and end C closed. The first compressor 13, the second compressor 31, and the battery water pump 21 can then be controlled to operate. Thus, the refrigerant from the vehicle-side charging cooling device can flow along the first compressor 13, the first condenser 12, the second three-way valve 17, the first expansion valve 18, the first heat exchanger 19, and the first three-way valve 14, and return to the first compressor 13. Similarly, the refrigerant from the charging pile cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and return to the second compressor 31. The coolant flows along the fluid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the charging device cooling component 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle-end interface 29, and the battery cooling component 20, and flows back to the battery water pump 21. Simultaneously, it cools the charging device cooling component 26 and the battery through the vehicle-end refrigerant circulation loop and the terminal refrigerant circulation loop. Figure 6 As shown, Figure 6 This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0099] Preferably, when it is determined that there is a cooling requirement for the battery and passenger compartment, and the vehicle-side compressor cooling is insufficient to meet the requirements, the first expansion valve 18, the second expansion valve 16, and the third expansion valve 33 can be controlled to open, with end C open and end B closed, and the first compressor 13, the second compressor 31, and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-side charging cooling device can flow along the first compressor 13 and the first condenser 12 to the second tee 17, where it splits into two paths: one path flows through the first expansion valve 18 and the first heat exchanger 19 to the first tee 14 and back to the first compressor 13; the other path flows through the second expansion valve 16 and the evaporator 15 and back to the first compressor 13. The refrigerant of the charging terminal cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and back to the second compressor 31. The coolant can flow along the fluid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle-end interface 29, and the battery cooling component 20, and flow back to the battery water pump 21. Simultaneously, it cools the battery through the vehicle-end refrigerant circulation loop and the terminal refrigerant circulation loop. Figure 7 As shown, Figure 7 This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0100] Preferably, when it is determined that the battery, passenger compartment, and charging pile all have cooling requirements, the first expansion valve 18, the second expansion valve 16, and the third expansion valve 33 can be controlled to open, the B end can be opened, and the C end can be closed. The first compressor 13, the second compressor 31, and the battery water pump 21 can then be controlled to operate. Thus, the refrigerant of the vehicle-side charging cooling device can flow along the first compressor 13 and the first condenser 12 to the second tee 17, where it splits into two paths. One path flows through the first expansion valve 18 and the first heat exchanger 19 to the first tee 14 and back to the first compressor 13; the other path flows through the second expansion valve 16 and the evaporator 15 and back to the first compressor 13. The refrigerant of the charging pile cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and back to the second compressor 31. The coolant can flow along the fluid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the charging device cooling component 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle-end interface 29, and the battery cooling component 20, and flow back to the battery water pump 21. Simultaneously, it cools the battery through the vehicle-end refrigerant circulation loop and the terminal refrigerant circulation loop. Figure 8 As shown, Figure 8 This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0101] Preferably, when a cooling requirement for the battery is determined, the first expansion valve 18 can be opened, the second expansion valve 16 closed, the third expansion valve 33 opened, the C end opened, and the B end closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-side charging cooling device can flow along the first compressor 13, the first condenser 12, the second three-way valve 17, the first expansion valve 18, the first heat exchanger 19, and the first three-way valve 14, and then flow back to the first compressor 13. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-side interface 23, the first terminal connector 24, the third three-way valve 25, the fourth three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle-side interface 29, and the battery cooling component 20, and then flow back to the battery water pump 21, completing the cooling of the battery.

[0102] Preferably, when a cooling requirement is determined for the battery and charging pile, the first expansion valve 18 can be opened, the second expansion valve 16 closed, the third expansion valve 33 opened, end B opened, and end C closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-side charging cooling device can flow along the first compressor 13, the first condenser 12, the second three-way valve 17, the first expansion valve 18, the first heat exchanger 19, and the first three-way valve 14, and flow back to the first compressor 13. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle-side interface 23, the first charging pile connector 24, the third three-way valve 25, the charging device cooling component 26, the fourth three-way valve 27, the second heat exchanger 30, the second charging pile connector 28, the second vehicle-side interface 29, and the battery cooling component 20, and flow back to the battery water pump 21.

[0103] Preferably, when it is determined that the battery, passenger compartment, and charging pile all have cooling requirements, the first expansion valve 18, the second expansion valve 16, and the third expansion valve 33 can be opened, with end B open and end C closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-side charging cooling device can flow along the first compressor 13 and the first condenser 12 to the second tee 17, where it splits into two paths: one path flows through the first expansion valve 18 and the first heat exchanger 19 to the first tee 14 and back to the first compressor 13; the other path flows through the second expansion valve 16 and the evaporator 15 and back to the first compressor 13. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the charging device cooling component 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle end interface 29, and the battery cooling component 20, and flow back to the battery water pump 21, thus completing the cooling of the battery, the passenger compartment, and the charging pile.

[0104] Preferably, when it is determined that both the battery and the charging pile have cooling requirements, the third expansion valve 33 can be controlled to open, end B to open, and end C to close, and the second compressor 31 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the charging pile cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and then flow back to the second compressor 31. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first charging pile connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second charging pile connector 28, the second vehicle end interface 29, and the battery cooling component 20, and then flow back to the battery water pump 21, completing the cooling of the battery and the charging pile. Figure 9 As shown, Figure 9This is a schematic diagram of a cooling process provided for one embodiment of this specification, wherein the bold lines represent the circulation process of the coolant and refrigerant.

[0105] Preferably, when it is determined that both the battery and the charging pile have cooling requirements, the third expansion valve 33 can be controlled to open, with end C open and end B closed, and the second compressor 31 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the charging pile cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and then flow back to the second compressor 31. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first charging pile connector 24, the No. 3 three-way valve 25, the charging device cooling component 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second charging pile connector 28, the second vehicle end interface 29, and the battery cooling component 20, and then flow back to the battery water pump 21, completing the cooling of the battery and the charging pile.

[0106] Preferably, when it is determined that both the battery and the passenger compartment require cooling, the first expansion valve 18 can be closed, the second expansion valve 16 can be opened, the third expansion valve 33 can be opened, the C end can be opened, and the B end can be closed. The first compressor 13 and the battery water pump 21 can then be operated. Thus, the refrigerant in the vehicle-side charging cooling device can circulate along the first compressor 13, the first condenser 12, the second three-way valve 17, the second expansion valve 16, and the evaporator 15. The refrigerant in the charging terminal cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and then flow back to the second compressor 31. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle end interface 29, and the battery cooling component 20, and then flow back to the battery water pump 21, thus completing the cooling of the passenger compartment and the battery.

[0107] Preferably, when it is determined that there is a cooling requirement for the battery, charging pile, and passenger compartment, the first expansion valve 18 can be closed, the second expansion valve 16 can be opened, the third expansion valve 33 can be opened, the B end can be opened, and the C end can be closed, and the first compressor 13 and the battery water pump 21 can be operated. Thus, the refrigerant of the vehicle-side charging cooling device can circulate along the first compressor 13, the first condenser 12, the second three-way valve 17, the second expansion valve 16, and the evaporator 15. The refrigerant of the charging pile-side cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, and the second heat exchanger 30, and then flow back to the second compressor 31. The coolant can flow along the liquid path of the battery water pump 21, the first heat exchanger 19, the first vehicle end interface 23, the first terminal connector 24, the No. 3 three-way valve 25, the charging device cooling component 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second terminal connector 28, the second vehicle end interface 29, and the battery cooling component 20, and flow back to the battery water pump 21, thus completing the cooling of the passenger compartment and the battery.

[0108] It should be noted that all actions involving the acquisition of signals, information, or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where the application is located, and with the authorization granted by the owner of the relevant device.

[0109] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0110] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0111] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this application.

Claims

1. A vehicle-end charging cooling device, characterized in that, This includes the vehicle-side refrigerant circulation circuit and the vehicle-side coolant circuit; The refrigerant circulation loop at the vehicle end includes a first condenser, a first compressor, a first three-way valve, a first heat exchanger, a first expansion valve, and a second three-way valve connected in sequence; an evaporator and a second expansion valve are also connected in sequence between the first three-way valve and the second three-way valve. The vehicle-end coolant circuit includes a first vehicle-end interface, a first heat exchanger, a battery water pump, a battery cooling component, and a second vehicle-end interface connected in sequence. The first vehicle-end interface can be connected to the first terminal connector of the charging pile and transmit coolant through the first terminal connector. The second vehicle-end interface can connect to the second terminal connector of the charging pile and transmit coolant through the second terminal connector; the coolant transmitted by the first vehicle-end interface and the second vehicle-end interface flows in opposite directions.

2. The vehicle-side charging cooling device according to claim 1, characterized in that, Both the first expansion valve and the second expansion valve are connected to the vehicle control center; Both the first expansion valve and the second expansion valve can respond to the instructions sent by the vehicle control center to adjust their opening degree, thereby adjusting the flow rate of the refrigerant flowing through the first expansion valve and the second expansion valve; The vehicle control center and the vehicle-side charging and cooling device both belong to the same vehicle.

3. A charging terminal cooling device, characterized in that, This includes the pile tip refrigerant circulation loop and the pile tip coolant loop; The refrigerant circulation loop at the pile end includes a second compressor, a second condenser, a third expansion valve, and a second heat exchanger connected in sequence. The pile end cooling fluid circuit includes a first pile end connector, a second heat exchanger, a second pile end connector connected in sequence, and a charging device cooling component; the charging device cooling component is disposed between the first pile end connector and the second heat exchanger, or the charging device cooling component is disposed between the second heat exchanger and the second pile end connector; The first pile end connector can be connected to the first vehicle end interface configured on the vehicle and transmit coolant through the first vehicle end interface; The second pile end connector can connect to the second vehicle end interface configured on the charging pile and transmit coolant through the second vehicle end interface; the coolant transmitted by the first pile end connector and the second pile end connector flows in opposite directions.

4. The pile-end charging cooling device according to claim 3, characterized in that, A No. 3 three-way valve is also provided between the first pile end connector and the cooling component of the charging device; A No. 4 tee is also provided between the cooling component of the charging device and the second heat exchanger; The No. 3 three-way valve is also connected to the No. 4 three-way valve; The No. 3 three-way valve can control the flow rate of coolant flowing to the No. 4 three-way valve and to the cooling component of the charging device, respectively.

5. The pile-end charging cooling device according to claim 3, characterized in that, The number of cooling components in the charging device is multiple; Different charging device cooling components correspond to different heating elements of the charging pile; the heating elements include transformers and / or charging cables and / or charging guns.

6. The pile-end charging cooling device according to claim 4, characterized in that, The third expansion valve, the third three-way valve, and the second compressor can be connected to the vehicle control center of the vehicle being charged, and receive instructions sent by the vehicle control center to adjust the opening degree of the valves and the power of the second compressor, thereby adjusting the flow rate of the refrigerant or coolant flowing through them.

7. A charging cooling system, characterized in that, Includes the vehicle-end charging cooling device as described in claim 1 or 2, and the charging-end cooling device as described in any one of claims 3-6; The first pile end connector is connected to the first vehicle end interface; The second pile end connector is connected to the second vehicle end interface.

8. The charging cooling system according to claim 7, characterized in that, Both the first expansion valve and the second expansion valve are open; The refrigerant can flow along the first compressor and the first condenser to the second three-way valve, where it splits into two paths. One path flows through the first expansion valve and the first heat exchanger to the first three-way valve and back to the first compressor. The other path flows through the second expansion valve and the evaporator and back to the first compressor. The first heat exchanger cools the coolant while the evaporator cools the passenger compartment. The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first terminal connector, the second heat exchanger, the second terminal connector, the second vehicle end interface, and the battery cooling components, and flow back to the battery water pump to complete the cooling of the battery.

9. The charging cooling system according to claim 7, characterized in that, The first expansion valve is open, the second expansion valve is closed, and the third expansion valve is open; The refrigerant of the vehicle-side charging cooling device can flow along the first compressor, the first condenser, the second three-way valve, the first expansion valve, the first heat exchanger, and the first three-way valve, and then flow back to the first compressor. The refrigerant in the charging cooling device can flow along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger, and then flow back to the second compressor. The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first pile end connector, the second heat exchanger, the second pile end connector, the second vehicle end interface, and the battery cooling components, and flow back to the battery water pump. At the same time, it cools the battery through the vehicle end refrigerant circulation loop and the pile end refrigerant circulation loop.

10. The charging cooling system according to claim 7, characterized in that, The first expansion valve is open, the second expansion valve is closed, and the third expansion valve is open; The refrigerant of the vehicle-side charging cooling device can flow along the first compressor, the first condenser, the second three-way valve, the first expansion valve, the first heat exchanger, and the first three-way valve, and then flow back to the first compressor. The refrigerant in the charging cooling device can flow along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger, and then flow back to the second compressor. The coolant can flow along the liquid path of the battery water pump, the first heat exchanger, the first vehicle end interface, the first pile end connector, the charging device cooling component, the second heat exchanger, the second pile end connector, the second vehicle end interface, and the battery cooling component, and flow back to the battery water pump. At the same time, it cools the charging device cooling component and the battery through the vehicle end refrigerant circulation loop and the pile end refrigerant circulation loop.

Images