Charging cooling system

Abstract

The invention discloses a charging cooling system, and relates to the technical field of new energy commercial vehicles. The charging cooling system comprises a vehicle end heat management 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 circularly connected. And the vehicle end cooling liquid loop consists of 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. The pile end heat management loop is composed of a second compressor, a second condenser, a third expansion valve and a second heat exchanger which are sequentially and circularly connected. And the pile end cooling liquid loop is composed of a first pile end connector, a charging device cooling piece, a second heat exchanger and a second pile end connector which are connected in sequence. Therefore, the charging cooling system can cool the battery and / or the passenger compartment and / or the charging pile through the first compressor in the vehicle and / or the second compressor of the charging pile in the charging process.

Description

Technical Field

[0001] This specification relates to the technical field of new energy commercial vehicles, and in particular to a charging cooling system. Background Art

[0002] In recent years, the development of charging piles has become increasingly rapid, and the charging power has gradually increased. The charging power of super charging piles is usually above 250KW, and the peak power of some super charging piles can even reach 800KW. However, the increase in charging power has also led to a sharp increase in the heat generated by new energy vehicles during the charging process.

[0003] Compared with passenger cars, new energy commercial vehicles have a long charging time due to the large battery capacity of the battery cooling package. As a result, the new energy commercial vehicles will gradually accumulate heat during the long charging process until the battery cooling components and / or charging piles have over-temperature and current limiting phenomena, which ultimately reduces the charging rate, increases the charging waiting time, reduces the single vehicle operating efficiency, and increases the single vehicle payback period. Summary of the invention

[0004] The present specification provides a charging cooling system to at least partially solve the above-mentioned problems existing in the prior art.

[0005] This manual adopts the following technical solutions:

[0006] This specification provides a charging cooling system, including a vehicle-end refrigerant circulation loop, a vehicle-end coolant liquid circuit, a pile-end refrigerant circulation loop, and a pile-end coolant liquid circuit;

[0007] The vehicle-end refrigerant circulation loop includes a first condenser, a first compressor, a No. 1 tee, a first heat exchanger, a first expansion valve, and a No. 2 tee, which are connected in a circular manner in sequence; an evaporator and a second expansion valve are also connected in sequence between the No. 1 tee and the No. 2 tee;

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

[0009] The pile end coolant circuit includes a first pile end interface, a second heat exchanger, a second pile end interface, and a charging device cooling member connected in sequence; the charging device cooling member is arranged between the first pile end interface and the second heat exchanger, or the charging device cooling member is arranged between the second heat exchanger and the second pile end interface; the first vehicle end interface can be detachably connected to the first pile end interface, and the second vehicle end interface can be detachably connected to the second pile end interface;

[0010] The pile end refrigerant circulation loop comprises a second compressor, a second condenser, a third expansion valve and a second heat exchanger which are cyclically connected in sequence; the second heat exchanger is also connected to the second compressor.

[0011] Preferably, the vehicle-end refrigerant circulation loop and the vehicle-end coolant loop are both arranged in a new energy commercial vehicle, and the capacity of the battery cooling component is greater than the minimum value of the commercial vehicle battery capacity; the first vehicle-end interface and the second vehicle-end interface can be exposed to the outside;

[0012] The pile end refrigerant circulation circuit and the pile end coolant circuit are both arranged in the charging pile; the charging pile is equipped with a charging gun, and the first pile end interface and the second pile end interface are integrated on the surface of the charging gun.

[0013] Preferably, the first expansion valve and / or the second expansion valve are connected to a vehicle control center; the vehicle control center is the structure of the new energy commercial vehicle;

[0014] The first expansion valve and / or the second expansion valve can adjust the opening degree in response to the instruction sent by the vehicle control center, thereby adjusting the flow rate of the refrigerant flowing through the first expansion valve and / or the second expansion valve.

[0015] Preferably, a No. 3 three-way valve is further arranged between the first pile end interface and the charging device cooling element;

[0016] A No. 4 tee is also arranged between the charging device cooling element and the second heat exchanger;

[0017] The No. 3 three-way valve is also connected to the No. 4 three-way valve;

[0018] The No. 3 three-way valve can control the flow of coolant flowing to the No. 4 three-way valve and to the cooling element of the charging device respectively.

[0019] Preferably, the number of the charging device cooling elements is multiple;

[0020] Different charging device cooling parts correspond to different heating elements of the charging pile respectively; the heating elements include a transformer and / or a charging cable and / or the charging gun.

[0021] Preferably, the third expansion valve and / or the second compressor and / or the No. 3 three-way valve can be connected to the vehicle control center and receive instructions sent by the vehicle control center to adjust the opening, thereby adjusting the flow rate of the refrigerant or coolant flowing therethrough;

[0022] The vehicle control center is the structure of the new energy commercial vehicle.

[0023] Preferably, the first expansion valve and the second expansion valve are both opened;

[0024] The refrigerant can flow along the first compressor and the first condenser to the No. 2 tee, and is divided into two paths at the No. 2 tee; one path flows to the No. 1 tee via the first expansion valve and the first heat exchanger, and flows back to the first compressor; the other path flows back to the first compressor via the second expansion valve and the evaporator; while the coolant is cooled by the first heat exchanger, the passenger compartment is cooled by the evaporator;

[0025] 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 interface, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooling component, and flow back to the battery water pump to complete the cooling of the battery.

[0026] Preferably, the first expansion valve is opened, the second expansion valve is closed, and the third expansion valve is opened;

[0027] The refrigerant in the vehicle-end refrigerant circulation loop can flow along the first compressor, the first condenser, the No. 2 tee, the first expansion valve, the first heat exchanger, the No. 1 tee, and flow back to the first compressor;

[0028] The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and flow back to the second compressor;

[0029] 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 interface, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooling component, and flow back to the battery water pump, while completing the cooling of the battery through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop.

[0030] Preferably, the first expansion valve is opened, the second expansion valve is closed, and the third expansion valve is opened;

[0031] The refrigerant in the vehicle-end refrigerant circulation loop can flow along the first compressor, the first condenser, the No. 2 tee, the first expansion valve, the first heat exchanger, the No. 1 tee, and flow back to the first compressor;

[0032] The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and flow back to the second compressor;

[0033] 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 interface, the charging device coolant, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery coolant, and flow back to the battery water pump, while passing through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop to complete the cooling of the charging device coolant and the battery.

[0034] Preferably, the third expansion valve is opened;

[0035] The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and flow back to the second compressor;

[0036] 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 interface, the charging device coolant, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooler, and flow back to the battery water pump, and the cooling of the charging device coolant and the battery is achieved only through the pile-end refrigerant circulation loop.

[0037] Preferably, the first expansion valve is closed, the second expansion valve is opened, and the third expansion valve is opened;

[0038] The refrigerant of the vehicle-end refrigerant circulation loop can circulate along the first compressor, the first condenser, the No. 2 tee, the second expansion valve and the evaporator;

[0039] The refrigerant in the pile end refrigerant circulation loop can circulate along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger;

[0040] The coolant can circulate along the battery water pump, the first heat exchanger, the first vehicle-end interface, the first pile-end connector, the No. 3 three-way valve, the No. 4 three-way valve, the second heat exchanger, the second pile-end connector, the second vehicle-end interface, and the battery cooling component to complete the cooling of the passenger compartment and the battery.

[0041] Preferably, the first expansion valve is closed, the second expansion valve is opened, and the third expansion valve is opened;

[0042] The refrigerant of the vehicle-end refrigerant circulation loop can circulate along the first compressor, the first condenser, the No. 2 tee, the second expansion valve and the evaporator;

[0043] The refrigerant in the pile end refrigerant circulation loop can circulate along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger;

[0044] The coolant can circulate along the battery water pump, the first heat exchanger, the first vehicle-end interface, the first pile-end connector, the No. 3 three-way valve, the charging device cooler, the No. 4 three-way valve, the second heat exchanger, the second pile-end connector, the second vehicle-end interface, and the battery cooler to complete the cooling of the passenger compartment and the battery.

[0045] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0046] The present specification provides a charging cooling system including a vehicle-end refrigerant circulation loop, a vehicle-end coolant loop, a pile-end refrigerant circulation loop and a pile-end coolant loop. Among them, the vehicle-end refrigerant circulation loop includes a first condenser, a first compressor, a No. 1 tee, a first heat exchanger, a first expansion valve and a No. 2 tee that are connected in a circular manner, and an evaporator and a second expansion valve are also connected in sequence between the No. 1 tee and the No. 2 tee. The vehicle-end coolant loop includes a first vehicle-end interface, a first heat exchanger, a battery water pump, a battery cooler and a second vehicle-end interface that are connected in sequence. The pile-end refrigerant circulation loop includes a second compressor, a second condenser, a third expansion valve and a second heat exchanger that are connected in a circular manner. The pile-end coolant loop includes a first pile-end connector, a charging device cooler, the second heat exchanger and a second pile-end connector that are connected in sequence. And the vehicle-end coolant loop and the pile-end coolant loop can be combined into a charging coolant circulation loop.

[0047] It can be seen from the above content that the charging cooling system can cool the battery and / or the passenger compartment and / or the charging pile during the charging process through the first compressor in the vehicle and / or the second compressor of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The illustrative embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification. In the drawings:

[0049] Figure 1 A schematic diagram of a split architecture of a charging cooling system provided for one embodiment of this specification;

[0050] Figure 2 A schematic diagram of the overall architecture of a charging cooling system provided for one embodiment of this specification;

[0051] Figure 3 A partial schematic diagram of a charging cooling system provided for one embodiment of the present specification;

[0052] Figure 4 A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0053] Figure 5A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0054] Figure 6 A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0055] Figure 7 A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0056] Figure 8 A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0057] Fig. 9 A schematic diagram of a cooling process cycle provided for one embodiment of the present specification;

[0058] Fig.10 A schematic diagram of the architecture of a vehicle-end point cooling structure provided for one embodiment of this specification;

[0059] Fig.11 A schematic diagram of the structure of a pile end point cooling structure provided for one embodiment of the present specification.

[0060] Description of reference numerals:

[0061] The first condenser 12; the first compressor 13; the No. 1 three-way valve 14; the evaporator 15; the second expansion valve 16; the No. 2 three-way valve 17; the first expansion valve 18; the first heat exchanger 19; the battery cooling element 20; the battery water pump 21; the first vehicle-end interface 23; the first pile-end connector 24; the No. 3 three-way valve 25; the charging device cooling element 26; the No. 4 three-way valve 27; the second pile-end connector 28; the second vehicle-end interface 29; the second heat exchanger 30; the second compressor 31; the second condenser 32; the third expansion valve 33. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] In the description of the present invention, it should be noted that the term "or" is generally used in a meaning including "and / or", unless the content clearly indicates otherwise.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0065] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0067] Figure 1 A schematic diagram of a split architecture of a charging cooling system provided for one embodiment of this specification is shown in FIG. Figure 1 As shown, the charging cooling system includes a vehicle-end refrigerant circulation loop, a vehicle-end coolant circuit, a pile-end refrigerant circulation loop and a pile-end coolant circuit.

[0068] Preferably, the vehicle-end refrigerant circulation loop includes a first condenser 12, a first compressor 13, a No. 1 tee 14, a first heat exchanger 19, a first expansion valve 18 and a No. 2 tee 17 which are connected in a circular manner, and an evaporator 15 and a second expansion valve 16 are connected in sequence between the No. 1 tee 14 and the No. 2 tee 17. The vehicle-end coolant loop includes a first vehicle-end interface 23, a first heat exchanger 19, a battery water pump 21, a battery cooler 20 and a second vehicle-end interface 29 which are connected in sequence. 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 which are connected in a circular manner, and the pile-end coolant loop includes a first pile-end connector 24, a charging device cooler 26, the second heat exchanger 30 and a second pile-end connector 28 which are connected in sequence. It should be noted that the charging device cooler 26 can also be arranged between the second heat exchanger 30 and the second pile-end connector 28.

[0069] The L end of the No. 1 tee 14 is connected to the first compressor 13, the K end is connected to the evaporator 15, and the J end is connected to the first heat exchanger 19. The G end of the No. 2 tee 17 is connected to the first expansion valve 18, the H end is connected to the second expansion valve 16, and the I end is connected to the first condenser 12.

[0070] By adjusting the opening degrees of the first expansion valve 18 and the second expansion valve 16 , the flow rates of the refrigerant flowing through the first expansion valve 18 and the second expansion valve 16 can be adjusted.

[0071] Preferably, the battery cooler 20 is disposed inside or outside the battery cooler and can be in close contact with the battery cells in the battery cooler to dissipate heat for the battery cooler.

[0072] Preferably, the first vehicle-end interface 23 can be connected to a first pile-end connector 24 disposed on the charging pile, and transmit coolant to the first pile-end connector 24 .

[0073] Preferably, the second vehicle-end interface 29 can be connected to the second pile-end connector 28 configured on the charging pile, and transmit coolant to the second pile-end connector 28. It should be noted that the flow direction of the coolant transmitted by the first vehicle-end interface 23 is opposite to that of the second vehicle-end interface 29. In other words, if the first vehicle-end interface 23 flows out coolant, the second vehicle-end interface 29 flows in coolant.

[0074] 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 .

[0075] 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 .

[0076] In this specification, the connection between the first pile end connector 24 and the first vehicle end interface 23 is taken as an example for explanation.

[0077] Figure 2 The overall architecture diagram of the charging cooling system provided by one embodiment of this specification is as follows: Figure 2 As shown, 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 .

[0078] Preferably, 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 vehicle end coolant circuit and the pile end coolant circuit are combined into a charging coolant circulation circuit.

[0079] Figure 3 A partial schematic diagram of a charging cooling system provided for one embodiment of this specification is shown in FIG. Figure 3As shown, in the charging coolant circulation loop, the coolant can circulate along the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, the battery cooler 20 and the battery water pump 21, and after flowing through the first pile-end connector 24, the coolant can also flow through the No. 3 three-way valve 25 and be split at the No. 3 three-way valve 25. One of the paths flows directly to the No. 4 three-way valve 27, and the other flows through the charging device cooling element 26 and then merges into the No. 4 three-way valve 27. The coolant flows to the second heat exchanger 30 at the No. 4 three-way valve 27.

[0080] In the above embodiment, the charging cooling system includes a vehicle-end refrigerant circulation loop, a vehicle-end coolant loop, a pile-end refrigerant circulation loop and a pile-end coolant loop. The vehicle-end refrigerant circulation loop includes a first condenser 12, a first compressor 13, a No. 1 tee 14, a first heat exchanger 19, a first expansion valve 18 and a No. 2 tee 17 which are connected in a circular manner, and an evaporator 15 and a second expansion valve 16 are connected in sequence between the No. 1 tee 14 and the No. 2 tee 17. The vehicle-end coolant loop includes a first vehicle-end interface 23, a first heat exchanger 19, a battery water pump 21, a battery cooler 20 and a second vehicle-end interface 29 which are connected in sequence. 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 which are connected in a circular manner. The pile-end coolant loop includes a first pile-end connector 24, a charging device cooler 26, the second heat exchanger 30 and a second pile-end connector 28 which are connected in sequence. And the vehicle-end coolant circuit and the pile-end coolant circuit can be combined into a charging coolant circulation circuit.

[0081] It can be seen from the above that the charging cooling system can cool the battery and / or the passenger compartment and / or the charging pile during the charging process through the first compressor 13 in the vehicle and / or the second compressor 35 of the charging pile.

[0082] Preferably, the vehicle-end charging cooling device is arranged in a new energy commercial vehicle.

[0083] Those skilled in the art will understand that, generally, a charging pile with a charging power greater than or equal to 250KW is a super charging pile, and such a high-power super charging pile will cause severe heating when charging a vehicle. For general passenger cars, due to the small battery capacity, generally only 10-80 kWh of battery capacity, therefore, when a passenger car is charged using a super charging pile, it can often be charged within 20 minutes. In this case, the temperature increase of the passenger car battery is often limited, and heat dissipation can be achieved solely by relying on the vehicle's own thermal management system.

[0084] However, for new energy commercial vehicles, the battery capacity is relatively large, usually more than 300 kWh, which means that new energy commercial vehicles often need to be charged continuously for more than 1 hour when using super charging piles. In this case, the temperature of the battery of the new energy commercial vehicle tends to rise sharply, and it is difficult to dissipate the heat of the battery only by relying on the thermal management system of the new energy commercial vehicle. To this end, the vehicle-side charging cooling device provided in this manual can transmit coolant with the charging pile, and use the cooling structure of the charging pile to further cool the coolant, thereby improving the efficiency of heat dissipation of the battery.

[0085] Typically, new energy commercial vehicles are equipped with a vehicle control center.

[0086] Preferably, the first expansion valve 18 and / or the second expansion valve 16 are connected to a vehicle control center of the new energy commercial vehicle.

[0087] Preferably, the first expansion valve 18 and / or the second expansion valve 16 can adjust the opening in response to the command sent by the vehicle control center, thereby adjusting the flow rate and flow rate of the refrigerant flowing through the first expansion valve 18 and / or the second expansion valve 16, thereby adjusting the cooling effect on the battery cooling element and the passenger compartment. In addition, the vehicle control center and the vehicle-side charging cooling device belong to the same vehicle.

[0088] Preferably, the charging device cooling component 26 is arranged between the first pile end joint 24 and the second heat exchanger 30, and a No. 3 three-way valve 25 is also arranged between the first pile end joint 24 and the charging device cooling component 26, and a No. 4 three-way valve 27 is also arranged 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.

[0089] The No. 3 three-way valve 25 can control the flow of the coolant flowing to the No. 4 three-way valve 27 and the flow of the coolant flowing to the charging device cooling element 26 respectively.

[0090] Preferably, the A end of the No. 3 three-way valve 25 is connected to the first pile end connector 24, the B end is connected to the charging device cooling member 26, the C end is connected to the E end of the No. 4 three-way valve 27, the D end of the No. 4 three-way valve 27 is also connected to the charging device cooling member 26, and the F end of the No. 4 three-way valve 27 is connected to the second heat exchanger 30. The coolant flows from the first pile end connector 24 to the A end, and the opening of the B end and the C end of the No. 3 three-way valve 25 can be controlled, thereby controlling the flow of the coolant flowing through the charging device cooling member 26.

[0091] Preferably, there are multiple charging device cooling members 26, and different charging device cooling members 26 correspond to different heating elements of the charging pile, respectively. The heating elements include transformers and / or charging cables and / or charging guns, etc.

[0092] Preferably, the third expansion valve 33 and / or the No. 3 three-way valve 25 and / or the second compressor 31 can be connected to the vehicle control center of the charged vehicle, and receive instructions sent by the vehicle control center to adjust the opening and / or start and / or stop, thereby adjusting the flow rate of the refrigerant or coolant flowing through the third expansion valve 33 and / or the No. 3 three-way valve 25, and adjusting the start and stop of the second compressor 31.

[0093] Preferably, when the first compressor 13 or the second compressor 31 is working, the coolant can cool the battery when flowing through the battery cooling element 20 . The battery is in close contact with the battery cooling element 20 .

[0094] Preferably, when the first compressor 13 is working, the refrigerant can cool the passenger compartment when flowing through the evaporator 15 .

[0095] Preferably, when it is determined that the battery cooling element needs to be cooled and the passenger compartment needs to be refrigerated, the first expansion valve 18 and the second expansion valve 16 can be controlled to be opened, the C end is opened, the B end is closed, and the first compressor 13 and the battery water pump 21 are operated. Thus, the refrigerant can flow along the first compressor 13 and the first condenser 12 to the No. 2 tee 17, and is divided into two paths at the No. 2 tee 17; one path passes through the first expansion valve 18 and the first heat exchanger 19, flows to the No. 1 tee 14, and flows back to the first compressor 13; the other path passes through the second expansion valve 16 and the evaporator 15, and flows back to the first compressor 13. While the refrigerant cools the coolant through the first heat exchanger 19, it also cools the passenger compartment through the evaporator 15. 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 pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and then flow back to the battery water pump 21 to complete the cooling of the battery. Figure 4 As shown, Figure 4 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0096] Preferably, when it is determined that there is a cooling demand for the battery cooling component, and the refrigeration of the vehicle-side compressor is difficult to meet the demand, the first expansion valve 18 can be controlled to open, the second expansion valve 16 can be closed, the third expansion valve 33 can be opened, the C end can be opened, the B end can be 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, the first condenser 12, the No. 2 three-way 17, the first expansion valve 18, the first heat exchanger 19, the No. 1 three-way 14, and flow back to the first compressor 13. The refrigerant of the pile-side charging cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and flow back to the second compressor 31. The coolant can flow along the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21, while completing the cooling of the battery through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop. Figure 5 As shown, Figure 5 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0097] Preferably, when it is determined that both the battery cooling element and the charging pile have cooling requirements, and the vehicle-side compressor refrigeration cannot meet the requirements of the battery cooling element, the first expansion valve 18 can be controlled to open, the second expansion valve 16 can be closed, the third expansion valve 33 can be controlled to open, the B end can be opened, the C end can be 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, the first condenser 12, the No. 2 three-way 17, the first expansion valve 18, the first heat exchanger 19, the No. 1 three-way 14, and flow back to the first compressor 13. The refrigerant of the charging cooling device at the pile end can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and flow back to the second compressor 31. The coolant can flow along the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the charging device cooling element 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21, and at the same time, through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop, the charging device cooling element 26 and the battery are cooled. Figure 6 As shown, Figure 6 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0098] Preferably, when it is determined that there is a cooling demand for the battery cooling element and the passenger compartment, and the vehicle-side compressor refrigeration cannot meet the demand, the first expansion valve 18 can be controlled to open, the second expansion valve 16 can be controlled to open, the third expansion valve 33 can be controlled to open, the C end can be opened, the B end can be 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 and cooling device can flow along the first compressor 13 and the first condenser 12 to the No. 2 tee 17, and is divided into two paths at the No. 2 tee 17; one path passes through the first expansion valve 18 and the first heat exchanger 19, flows to the No. 1 tee 14, and flows back to the first compressor 13; the other path passes through the second expansion valve 16 and the evaporator 15, and flows back to the first compressor 13. The refrigerant of the pile-side charging and cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and flows back to the second compressor 31. The coolant can flow along the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21, while completing the cooling of the battery through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop. Figure 7 As shown, Figure 7 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0099] Preferably, when it is determined that the battery cooling element, the passenger compartment and the charging pile all have cooling requirements, the first expansion valve 18 can be controlled to open, the second expansion valve 16 can be controlled to open, the third expansion valve 33 can be controlled to open, the B end can be opened, the C end can be 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-end charging cooling device can flow along the first compressor 13 and the first condenser 12 to the No. 2 tee 17, and is divided into two paths at the No. 2 tee 17; one path passes through the first expansion valve 18 and the first heat exchanger 19, flows to the No. 1 tee 14, and flows back to the first compressor 13; the other path passes through the second expansion valve 16 and the evaporator 15, and flows back to the first compressor 13. The refrigerant of the charging cooling device at the pile end can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and flows back to the second compressor 31. The coolant can flow along the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the charging device cooling element 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21, while completing the cooling of the battery through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop. Figure 8 As shown, Figure 8 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0100] Preferably, when it is determined that the battery cooling element has a cooling demand, the first expansion valve 18 can be controlled to be opened, the second expansion valve 16 can be closed, the third expansion valve 33 can be opened, the C end can be opened, the B end can be closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-end charging cooling device can flow along the first compressor 13, the first condenser 12, the No. 2 three-way 17, the first expansion valve 18, the first heat exchanger 19, the No. 1 three-way 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-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21 to complete the cooling of the battery.

[0101] Preferably, when it is determined that the battery cooling element and the charging pile have cooling requirements, the first expansion valve 18 can be controlled to be opened, the second expansion valve 16 can be closed, the third expansion valve 33 can be opened, the B end can be opened, the C end can be closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-end charging cooling device can flow along the first compressor 13, the first condenser 12, the No. 2 three-way 17, the first expansion valve 18, the first heat exchanger 19, the No. 1 three-way 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-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the charging device cooling element 26, the No. 4 three-way 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21.

[0102] Preferably, when it is determined that the battery cooling element, the passenger compartment and the charging pile all have cooling requirements, the first expansion valve 18 can be controlled to open, the second expansion valve 16 can be controlled to open, the third expansion valve 33 can be controlled to open, the B end can be opened, the C end can be closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Therefore, the refrigerant of the vehicle-end charging cooling device can flow along the first compressor 13 and the first condenser 12 to the No. 2 tee 17, and is divided into two paths at the No. 2 tee 17; one path passes through the first expansion valve 18 and the first heat exchanger 19, flows to the No. 1 tee 14, and flows back to the first compressor 13; the other path passes through the second expansion valve 16 and the evaporator 15, and flows 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 pile-end connector 24, the No. 3 three-way valve 25, the charging device cooler 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooler 20, and flow back to the battery water pump 21 to complete the cooling of the battery cooler, the passenger compartment and the charging pile.

[0103] Preferably, when it is determined that both the battery cooler and the charging pile have cooling requirements, the third expansion valve 33 can be controlled to open, the B end can be opened, and the C end can be closed, and the second compressor 31 and the battery water pump 21 can be controlled to operate. Therefore, the refrigerant of the pile-end charging cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and flow back to the second compressor 31. The coolant can flow along the battery water pump 21, the first heat exchanger 19, the first vehicle-end interface 23, the first pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the liquid path of the battery cooler 20, and flow back to the battery water pump 21, completing the cooling of the battery cooler and the charging pile. Fig. 9 As shown, Fig. 9 A schematic diagram of a cooling process cycle is provided for one embodiment of the present specification, wherein the bold line segments represent the circulation process of the coolant and the refrigerant.

[0104] Preferably, when it is determined that both the battery cooling element and the charging pile have cooling requirements, the third expansion valve 33 can be controlled to open, the C end can be opened, the B end can be closed, and the second compressor 31 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the charging cooling device at the pile end can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and 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 pile-end connector 24, the No. 3 three-way valve 25, the charging device cooling element 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooling element 20, and flow back to the battery water pump 21, completing the cooling of the battery cooling element and the charging pile.

[0105] Preferably, when it is determined that both the battery cooling element and the passenger compartment have cooling requirements, the first expansion valve 18 can be controlled to be closed, the second expansion valve 16 can be opened, the third expansion valve 33 can be opened, the C end can be opened, the B end can be closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-end charging and cooling device can circulate along the first compressor 13, the first condenser 12, the No. 2 three-way 17, the second expansion valve 16 and the evaporator 15. The refrigerant of the pile-end charging and cooling device can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and 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 pile-end connector 24, the No. 3 three-way valve 25, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooler 20, and flow back to the battery water pump 21 to complete the cooling of the passenger compartment and the battery.

[0106] Preferably, when it is determined that the battery cooling element, charging pile, and passenger compartment all have cooling requirements, the first expansion valve 18 can be controlled to be closed, the second expansion valve 16 can be opened, the third expansion valve 33 can be opened, the B end can be opened, the C end can be closed, and the first compressor 13 and the battery water pump 21 can be controlled to operate. Thus, the refrigerant of the vehicle-end charging cooling device can circulate along the first compressor 13, the first condenser 12, the No. 2 three-way 17, the second expansion valve 16, and the evaporator 15. The refrigerant of the charging cooling device at the pile end can flow along the second compressor 31, the second condenser 32, the third expansion valve 33, the second heat exchanger 30, and 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 pile-end connector 24, the No. 3 three-way valve 25, the charging device cooler 26, the No. 4 three-way valve 27, the second heat exchanger 30, the second pile-end connector 28, the second vehicle-end interface 29, and the battery cooler 20, and flow back to the battery water pump 21 to complete the cooling of the passenger compartment and the battery.

[0107] It should be noted that all actions of acquiring signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0108] In addition, this specification also provides a vehicle-side charging cooling structure, which includes a vehicle-side refrigerant circulation loop and a vehicle-side coolant loop. For details, please refer to the above-mentioned charging cooling system. Fig.10 A schematic diagram of the architecture of a vehicle-end point cooling structure provided for one embodiment of the present specification.

[0109] In addition, this specification also provides a charging cooling structure at a pile end, which includes a pile end refrigerant circulation loop and a pile end coolant loop. For details, please refer to the above charging cooling system. Fig.11 A schematic diagram of the structure of a pile end point cooling structure provided for one embodiment of the present specification.

[0110] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0111] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0112] The above description is only an embodiment of this specification and is not intended to limit this specification. For those skilled in the art, this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification should be included in the scope of the claims of this application.

Claims

1. A charging cooling system, characterized in that: It includes a vehicle-end refrigerant circulation loop, a vehicle-end coolant circulation loop, a pile-end refrigerant circulation loop and a pile-end coolant circulation loop; The vehicle-end refrigerant circulation loop includes a first condenser, a first compressor, a No. 1 tee, a first heat exchanger, a first expansion valve, and a No. 2 tee, which are connected in a circular manner in sequence; an evaporator and a second expansion valve are also connected in sequence between the No. 1 tee and the No. 2 tee; The vehicle-end coolant circuit includes a first vehicle-end interface, a first heat exchanger, a battery water pump, a battery cooler, and a second vehicle-end interface connected in sequence; The pile end coolant circuit includes a first pile end interface, a second heat exchanger, a second pile end interface, and a charging device cooling member connected in sequence; the charging device cooling member is arranged between the first pile end interface and the second heat exchanger, or the charging device cooling member is arranged between the second heat exchanger and the second pile end interface; the first vehicle end interface can be detachably connected to the first pile end interface, and the second vehicle end interface can be detachably connected to the second pile end interface; The pile end refrigerant circulation loop comprises a second compressor, a second condenser, a third expansion valve and a second heat exchanger which are cyclically connected in sequence; the second heat exchanger is also connected to the second compressor.

2. The charging cooling system according to claim 1, characterized in that: The vehicle-end refrigerant circulation loop and the vehicle-end coolant loop are both arranged in a new energy commercial vehicle, and the capacity of the battery cooling component is greater than the minimum value of the commercial vehicle battery capacity; the first vehicle-end interface and the second vehicle-end interface can be exposed to the outside; The pile end refrigerant circulation circuit and the pile end coolant circuit are both arranged in the charging pile; the charging pile is equipped with a charging gun, and the first pile end interface and the second pile end interface are integrated on the surface of the charging gun.

3. The charging cooling system according to claim 2, characterized in that: The first expansion valve and / or the second expansion valve are connected to a vehicle control center; the vehicle control center is a structure of the new energy commercial vehicle; The first expansion valve and / or the second expansion valve can adjust the opening degree in response to the instruction sent by the vehicle control center, thereby adjusting the flow rate of the refrigerant flowing through the first expansion valve and / or the second expansion valve.

4. The charging cooling system according to claim 1, characterized in that: A No. 3 three-way valve is also arranged between the first pile end interface and the charging device cooling element; A No. 4 tee is also arranged between the charging device cooling element 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 of coolant flowing to the No. 4 three-way valve and to the cooling element of the charging device respectively.

5. The charging cooling system according to claim 2, characterized in that: The number of the charging device cooling elements is multiple; Different charging device cooling parts correspond to different heating elements of the charging pile respectively; the heating elements include a transformer and / or a charging cable and / or the charging gun.

6. The charging cooling system according to claim 2, characterized in that: The third expansion valve and / or the second compressor and / or the No. 3 three-way valve can be connected to the vehicle control center and receive instructions sent by the vehicle control center to adjust the opening, thereby adjusting the flow rate of the refrigerant or coolant flowing through them; The vehicle control center is the structure of the new energy commercial vehicle.

7. The charging cooling system according to claim 1, characterized in that: The first expansion valve and the second expansion valve are both opened; The refrigerant can flow along the first compressor and the first condenser to the No. 2 tee, and is divided into two paths at the No. 2 tee; one path flows to the No. 1 tee via the first expansion valve and the first heat exchanger, and flows back to the first compressor; the other path flows back to the first compressor via the second expansion valve and the evaporator; while the coolant is cooled by the first heat exchanger, the passenger compartment is cooled by the evaporator; 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 interface, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooling component, and flow back to the battery water pump to complete the cooling of the battery.

8. The charging cooling system according to claim 1, characterized in that: The first expansion valve is opened, the second expansion valve is closed, and the third expansion valve is opened; The refrigerant in the vehicle-end refrigerant circulation loop can flow along the first compressor, the first condenser, the No. 2 tee, the first expansion valve, the first heat exchanger, the No. 1 tee, and flow back to the first compressor; The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and 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 interface, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooling component, and flow back to the battery water pump, while completing the cooling of the battery through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop.

9. The charging cooling system according to claim 1, characterized in that: The first expansion valve is opened, the second expansion valve is closed, and the third expansion valve is opened; The refrigerant in the vehicle-end refrigerant circulation loop can flow along the first compressor, the first condenser, the No. 2 tee, the first expansion valve, the first heat exchanger, the No. 1 tee, and flow back to the first compressor; The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and 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 interface, the charging device coolant, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery coolant, and flow back to the battery water pump, while passing through the vehicle-end refrigerant circulation loop and the pile-end refrigerant circulation loop to complete the cooling of the charging device coolant and the battery.

10. The charging cooling system according to claim 1, characterized in that: The third expansion valve is opened; The refrigerant in the pile end refrigerant circulation loop can flow along the second compressor, the second condenser, the third expansion valve, the second heat exchanger, and 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 interface, the charging device coolant, the second heat exchanger, the second pile-end interface, the second vehicle-end interface, and the battery cooler, and flow back to the battery water pump, and the cooling of the charging device coolant and the battery is achieved only through the pile-end refrigerant circulation loop.

11. The charging cooling system according to claim, characterized in that: The first expansion valve is closed, the second expansion valve is opened, and the third expansion valve is opened; The refrigerant of the vehicle-end refrigerant circulation loop can circulate along the first compressor, the first condenser, the No. 2 tee, the second expansion valve and the evaporator; The refrigerant in the pile end refrigerant circulation loop can circulate along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger; The coolant can circulate along the battery water pump, the first heat exchanger, the first vehicle-end interface, the first pile-end connector, the No. 3 three-way valve, the No. 4 three-way valve, the second heat exchanger, the second pile-end connector, the second vehicle-end interface, and the battery cooling component to complete the cooling of the passenger compartment and the battery.

12. The charging cooling system according to claim, characterized in that: The first expansion valve is closed, the second expansion valve is opened, and the third expansion valve is opened; The refrigerant of the vehicle-end refrigerant circulation loop can circulate along the first compressor, the first condenser, the No. 2 tee, the second expansion valve and the evaporator; The refrigerant in the pile end refrigerant circulation loop can circulate along the second compressor, the second condenser, the third expansion valve, and the second heat exchanger; The coolant can circulate along the battery water pump, the first heat exchanger, the first vehicle-end interface, the first pile-end connector, the No. 3 three-way valve, the charging device cooler, the No. 4 three-way valve, the second heat exchanger, the second pile-end connector, the second vehicle-end interface, and the battery cooler to complete the cooling of the passenger compartment and the battery.

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