Temperature adjusting system and vehicle

Abstract

The utility model is suitable for the technical field of vehicles, and provides a temperature adjusting system and a vehicle, the temperature adjusting system comprises a battery temperature adjusting unit, an air conditioner unit, a heat production unit, a first multi-way valve and a second multi-way valve; the heat production unit comprises a first water pump, a heat production part and a first heat exchanger; the air conditioning unit comprises a compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first expansion valve, a first stop valve and a second stop valve; the battery temperature adjusting unit comprises a second water pump, a third water pump, a battery pack, a heater and a fifth heat exchanger. According to the temperature adjusting system provided by the embodiment of the invention, rapid heating or rapid cooling of the battery pack can be realized, and the temperature of the battery pack can be rapidly adjusted to a proper temperature, so that the charging efficiency of the battery pack is improved, namely the charging speed of a vehicle is improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular, relates to a temperature control system and a vehicle. Background Art

[0002] With the popularization of electric vehicles, more and more users are starting to use electric vehicles, and their requirements for electric vehicles are getting higher and higher, including the charging speed requirements for electric vehicles. Based on the user's requirements for the charging speed of electric vehicles, car companies have designed electric vehicles that can be charged quickly or extremely quickly.

[0003] Since temperature is an important factor affecting the charging speed of the battery pack, in order to improve the charging speed of the electric vehicle, the temperature of the battery pack needs to be quickly adjusted to a suitable temperature, thereby improving the charging speed of the electric vehicle. However, the existing electric vehicles cannot achieve rapid adjustment of the battery pack temperature, which affects the charging speed of the electric vehicle. Utility Model Content

[0004] The embodiments of the present application provide a temperature regulation system and a vehicle, which can solve the problem that the temperature of the battery pack cannot be quickly regulated, thus affecting the charging speed of the electric vehicle.

[0005] In a first aspect, an embodiment of the present application provides a temperature adjustment system, including a battery temperature adjustment unit, an air conditioning unit, a heat generating unit, a first multi-way valve, and a second multi-way valve;

[0006] The heat generating unit comprises a first water pump, a heat generating component and a first heat exchanger; the first water pump, the heat generating component, the first multi-way valve, the first heat exchanger and the second multi-way valve constitute a first temperature regulating loop;

[0007] The air conditioning unit includes a compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first expansion valve, a first stop valve and a second stop valve; the compressor, the second heat exchanger, the first stop valve, the third heat exchanger, the first expansion valve and the first heat exchanger constitute a second temperature regulating loop; the compressor, the second heat exchanger, the second stop valve, the fourth heat exchanger, the first expansion valve and the first heat exchanger constitute a third temperature regulating loop;

[0008] The battery temperature regulation unit includes a second water pump, a third water pump, a battery pack, a heater and a fifth heat exchanger; the second water pump, the battery pack, the first multi-way valve, the heater, the second multi-way valve, the second heat exchanger and the third water pump constitute a fourth temperature regulation loop; the third water pump, the second multi-way valve, the heater, the first multi-way valve, the fifth heat exchanger and the second heat exchanger constitute a fifth temperature regulation loop; the second water pump, the battery pack, the first multi-way valve, the first heat exchanger and the second multi-way valve constitute a sixth temperature regulation loop.

[0009] In a possible implementation of the first aspect, the liquid outlet of the first water pump is connected to the liquid inlet of the heat generating component, the liquid outlet of the heat generating component is connected to the first port of the first multi-way valve, the second port of the first multi-way valve is connected to the first liquid inlet of the first heat exchanger, the first liquid outlet of the first heat exchanger is connected to the first port of the second multi-way valve, and the second port of the second multi-way valve is connected to the liquid inlet of the first water pump.

[0010] In a possible implementation of the first aspect, the liquid outlet of the second water pump is connected to the liquid inlet of the battery pack, the liquid outlet of the battery pack is connected to the third port of the first multi-way valve, the fourth port of the first multi-way valve is connected to the first liquid port of the heater, the second liquid port of the heater is connected to the third port of the second multi-way valve, the fourth port of the second multi-way valve is connected to the second liquid inlet of the second heat exchanger, the second liquid outlet of the second heat exchanger is connected to the liquid inlet of the third water pump, the liquid outlet of the third water pump is connected to the fifth port of the second multi-way valve, the sixth port of the second multi-way valve is connected to the liquid inlet of the second water pump, the liquid inlet of the fifth heat exchanger is respectively connected to the liquid outlet of the heat generating component and the first port of the first multi-way valve, and the liquid outlet of the fifth heat exchanger is connected to the seventh port of the second multi-way valve.

[0011] In a possible implementation of the first aspect, the battery temperature adjustment unit also includes a three-way valve, a first port of the three-way valve is respectively connected to the fourth port of the second multi-way valve and the second liquid inlet of the second heat exchanger, a second port of the three-way valve is connected to the liquid inlet of the third water pump, and a third port of the three-way valve is connected to the second liquid outlet of the second heat exchanger.

[0012] In a possible implementation of the first aspect, the liquid outlet of the compressor is connected to the first liquid inlet of the second heat exchanger, the first liquid outlet of the second heat exchanger is respectively connected to the liquid inlet of the first stop valve and the liquid inlet of the second stop valve, the liquid outlet of the first stop valve is connected to the liquid inlet of the third heat exchanger, the liquid outlet of the second stop valve is connected to the liquid inlet of the fourth heat exchanger, the liquid outlet of the third heat exchanger and the liquid outlet of the fourth heat exchanger are both connected to the liquid inlet of the first expansion valve, the liquid outlet of the first expansion valve is connected to the second liquid inlet of the first heat exchanger, and the second liquid outlet of the first heat exchanger is connected to the liquid inlet of the compressor.

[0013] In a possible implementation of the first aspect, the air-conditioning unit also includes a first one-way valve and a second one-way valve, the liquid inlet of the first one-way valve is connected to the liquid outlet of the third heat exchanger, the liquid inlet of the second one-way valve is connected to the liquid outlet of the fourth heat exchanger, and the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are both connected to the liquid inlet of the first expansion valve.

[0014] In a possible implementation of the first aspect, the air-conditioning unit also includes a coaxial tube, a first liquid inlet of the coaxial tube is respectively connected to the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve, the first liquid outlet of the coaxial tube is connected to the liquid inlet of the first expansion valve, the second liquid inlet of the coaxial tube is connected to the second liquid outlet of the first heat exchanger, and the second liquid outlet of the coaxial tube is connected to the liquid inlet of the compressor.

[0015] In a possible implementation of the first aspect, the air-conditioning unit also includes a second expansion valve and a third stop valve, the liquid inlet of the second expansion valve is connected to the first liquid outlet of the coaxial tube, the liquid outlet of the second expansion valve is connected to the liquid inlet of the fourth heat exchanger, the liquid inlet of the third stop valve is connected to the liquid outlet of the fourth heat exchanger, and the liquid outlet of the third stop valve is connected to the second liquid inlet of the coaxial tube.

[0016] In a possible implementation of the first aspect, the air conditioning unit further includes a liquid storage-drying tank, a liquid inlet of the liquid storage-drying tank being respectively connected to a liquid outlet of the first one-way valve and a liquid outlet of the second one-way valve, and a liquid outlet of the liquid storage-drying tank being connected to a first liquid inlet of the coaxial tube.

[0017] In a second aspect, an embodiment of the present application provides an electric vehicle, comprising the temperature control system described in any one of the first aspects.

[0018] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0019] When the vehicle needs to quickly heat up the battery pack during charging, the heat-generating components on the vehicle (for example, the power supply, bridge, etc. on the vehicle) generate heat, and the first water pump works. Under the action of the first water pump, the coolant circulates in the first temperature regulating loop composed of the first water pump, the heat-generating components, the first multi-way valve, the first heat exchanger, and the second multi-way valve, and the heat generated by the heat-generating components is transferred to the first heat exchanger. The compressor generates heat when it works. Under the action of the compressor, the refrigerant circulates in the second temperature regulating loop composed of the compressor, the second heat exchanger, the first stop valve, the third heat exchanger, the first expansion valve, and the first heat exchanger. When the refrigerant flows through the first heat exchanger, it absorbs the heat generated by the heat-generating components, so that the temperature of the refrigerant increases. The heated refrigerant is further heated up under the action of the compressor and transferred to the second heat exchanger. At this time, the heat generated by the heat-generating components and the heat generated by the compressor are transferred to the second heat exchanger. The heater generates heat, and the second water pump and the third water pump work. Under the action of the second water pump and the third water pump, the coolant circulates in the fourth temperature regulating loop composed of the second water pump, the battery pack, the first multi-way valve, the heater, the second multi-way valve, the second heat exchanger and the third water pump. The coolant absorbs heat and heats up in the second heat exchanger. At the same time, the heater heats the coolant to increase the temperature of the coolant. The heated coolant flows through the battery pack to increase the temperature of the battery pack. Thus, the temperature of the battery pack is increased by the cooperation of the first temperature regulating loop, the second temperature regulating loop and the fourth temperature regulating loop, that is, the heat-generating components, the heater and the compressor all generate heat to heat the battery pack, which improves the heating capacity of the battery pack and can quickly increase the temperature of the battery pack.

[0020] When the battery pack needs to be cooled down quickly during vehicle charging, the heater does not work and the third water pump works. Under the action of the third water pump, the coolant circulates in the fifth temperature regulating loop composed of the third water pump, the second multi-way valve, the heater, the first multi-way valve, the fifth heat exchanger and the second heat exchanger. The coolant releases heat at the fifth heat exchanger and the temperature is reduced. The low-temperature coolant is transferred to the second heat exchanger under the action of the third water pump. The coolant absorbs heat at the second heat exchanger, so that the temperature of the refrigerant in the second heat exchanger is reduced. The compressor works. Under the action of the compressor, the refrigerant circulates in the third temperature regulating loop composed of the compressor, the second heat exchanger, the second stop valve, the fourth heat exchanger, the first expansion valve and the first heat exchanger. The refrigerant releases heat when flowing through the second heat exchanger and the temperature of the refrigerant is further reduced. The low-temperature refrigerant absorbs heat when flowing through the first heat exchanger, so that the coolant in the first heat exchanger is cooled. The second water pump is working. Under the action of the second water pump, the coolant circulates in the sixth temperature regulation loop composed of the second water pump, the battery pack, the first multi-way valve, the first heat exchanger and the second multi-way valve. The coolant absorbs heat when flowing through the first heat exchanger, and the temperature of the coolant will decrease. The low-temperature coolant absorbs heat when flowing through the battery pack, which reduces the temperature of the battery pack. Therefore, the third temperature regulation loop, the fifth temperature regulation loop and the sixth temperature regulation loop cooperate to achieve cooling of the battery pack, improve the cooling capacity of the battery pack, and can quickly reduce the temperature of the battery.

[0021] It can be seen from this that the temperature control system provided in the embodiment of the present application can achieve rapid heating or cooling of the battery pack, and can quickly adjust the temperature of the battery pack to a suitable temperature, thereby improving the charging efficiency of the battery pack, that is, increasing the charging speed of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 is a connection diagram of a temperature adjustment system provided in one embodiment of the present application;

[0024] Figure 2 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0025] Figure 3 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0026] Figure 4 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0027] Figure 5 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0028] Figure 6 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0029] Figure 7 is a connection diagram of a temperature adjustment system provided by another embodiment of the present application;

[0030] Figure 8 It is a connection diagram of a temperature control system provided in another embodiment of the present application.

[0031] In the figure: 10, first multi-way valve; 20, second multi-way valve; 101, first water pump; 102, heat generating component; 103, first heat exchanger; 201, compressor; 202, second heat exchanger; 203, first stop valve; 204, third heat exchanger; 205, first expansion valve; 206, second stop valve; 207, fourth heat exchanger; 208, first non-return valve; 209, second non-return valve; 210, third stop valve; 211, coaxial tube; 212, second expansion valve; 213, liquid storage drying tank; 301, second water pump; 302, third water pump; 303, battery pack; 304, heater; 305, fifth heat exchanger; 306, three-way valve. DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0033] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0034] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0035] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0036] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0037] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0038] Since temperature is an important factor affecting the charging speed of the battery pack, in order to improve the charging speed of the electric vehicle, the temperature of the battery pack needs to be quickly adjusted to a suitable temperature, thereby improving the charging speed of the electric vehicle. However, the existing electric vehicles cannot achieve rapid adjustment of the battery pack temperature, which affects the charging speed of the electric vehicle.

[0039] Based on the above problems, Figure 1As shown, an embodiment of the present application provides a temperature adjustment system, including a battery temperature adjustment unit, an air conditioning unit, a heat generating unit, a first multi-way valve 10 and a second multi-way valve 20. The heat generating unit includes a first water pump 101, a heat generating component 102 and a first heat exchanger 103; the first water pump 101, the heat generating component 102, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20 constitute a first temperature adjustment loop. The air conditioning unit includes a compressor 201, a second heat exchanger 202, a third heat exchanger 204, a fourth heat exchanger 207, a first expansion valve 205, a first stop valve 203 and a second stop valve 206; the compressor 201, the second heat exchanger 202, the first stop valve 203, the third heat exchanger 204, the first expansion valve 205 and the first heat exchanger 103 constitute a second temperature regulating loop; the compressor 201, the second heat exchanger 202, the second stop valve 206, the fourth heat exchanger 207, the first expansion valve 205 and the first heat exchanger 103 constitute a third temperature regulating loop. The battery temperature regulation unit includes a second water pump 301, a third water pump 302, a battery pack 303, a heater 304 and a fifth heat exchanger 305; the second water pump 301, the battery pack 303, the first multi-way valve 10, the heater 304, the second multi-way valve 20, the second heat exchanger 202 and the third water pump 302 constitute a fourth temperature regulation loop; the third water pump 302, the second multi-way valve 20, the heater 304, the first multi-way valve 10, the fifth heat exchanger 305 and the second heat exchanger 202 constitute a fifth temperature regulation loop; the second water pump 301, the battery pack 303, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20 constitute a sixth temperature regulation loop.

[0040] Specifically, when the battery pack 303 needs to be heated up quickly during vehicle charging, the heat-generating component 102 on the vehicle (for example, the power supply, the electric bridge, etc. on the vehicle) generates heat, and the first water pump 101 works. Under the action of the first water pump 101, the coolant circulates in the first temperature regulating loop formed by the first water pump 101, the heat-generating component 102, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20, and the heat generated by the heat-generating component 102 is transferred to the first heat exchanger 103.

[0041] The first stop valve 203 is opened and the second stop valve 206 is closed, and the compressor 201 generates heat when it works. Under the action of the compressor 201, the refrigerant circulates in the second temperature regulating loop formed by the compressor 201, the second heat exchanger 202, the first stop valve 203, the third heat exchanger 204, the first expansion valve 205 and the first heat exchanger 103. When flowing through the first heat exchanger 103, the refrigerant absorbs the heat generated by the heat-generating component 102, so that the temperature of the refrigerant increases. The heated refrigerant is further heated up by the compressor 201 and transmitted to the second heat exchanger 202. At this time, the heat generated by the heat-generating component 102 and the heat generated by the compressor 201 are transmitted to the second heat exchanger 202.

[0042] The heater 304 generates heat when it is working, and the second water pump 301 and the third water pump 302 are working. Under the action of the second water pump 301 and the third water pump 302, the coolant circulates in the fourth temperature regulating loop composed of the second water pump 301, the battery pack 303, the first multi-way valve 10, the heater 304, the second multi-way valve 20, the second heat exchanger 202 and the third water pump 302. The coolant absorbs the heat generated by the heat-generating component 102 and the compressor 201 in the second heat exchanger 202, so that the temperature of the coolant increases. At the same time, the heater 304 heats the coolant to further increase the temperature of the coolant. The heated coolant flows through the battery pack 303, so that the temperature of the battery pack 303 increases. Therefore, the temperature of the battery pack 303 is increased by the cooperation of the first temperature regulation circuit, the second temperature regulation circuit and the fourth temperature regulation circuit, that is, the heat generating component 102, the heater 304 and the compressor 201 all generate heat to heat the battery pack 303, thereby improving the heating capacity of the battery pack 303 and allowing the temperature of the battery pack 303 to increase rapidly.

[0043] When the battery pack 303 needs to be cooled down quickly during vehicle charging, the heater 304 does not work and the third water pump 302 works. Under the action of the third water pump 302, the coolant circulates in the fifth temperature regulating loop formed by the third water pump 302, the second multi-way valve 20, the heater 304, the first multi-way valve 10, the fifth heat exchanger 305 and the second heat exchanger 202. The coolant releases heat at the fifth heat exchanger 305 and the temperature is lowered. The low-temperature coolant is transmitted to the second heat exchanger 202 under the action of the third water pump 302, and the coolant absorbs heat at the second heat exchanger 202, thereby reducing the temperature of the refrigerant in the second heat exchanger 202.

[0044] The first stop valve 203 is closed, the second stop valve 206 is opened, and the compressor 201 is working. Under the action of the compressor 201, the refrigerant circulates in the third temperature regulating circuit composed of the compressor 201, the second heat exchanger 202, the second stop valve 206, the fourth heat exchanger 207, the first expansion valve 205 and the first heat exchanger 103. The heat release temperature of the refrigerant will decrease when flowing through the second heat exchanger 202. The cooled refrigerant releases heat when flowing through the fourth heat exchanger 207, and the temperature of the refrigerant is further reduced. The low-temperature refrigerant absorbs heat when flowing through the first heat exchanger 103, thereby cooling the coolant in the first heat exchanger 103.

[0045] The second water pump 301 is working. Under the action of the second water pump 301, the coolant circulates in the sixth temperature regulation loop composed of the second water pump 301, the battery pack 303, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20. The coolant absorbs heat when flowing through the first heat exchanger 103, and the temperature of the coolant will decrease. The low-temperature coolant absorbs heat when flowing through the battery pack 303, so that the temperature of the battery pack 303 decreases. Therefore, the third temperature regulation loop, the fifth temperature regulation loop and the sixth temperature regulation loop cooperate to achieve the cooling of the battery pack 303, improve the cooling capacity of the battery pack 303, and can quickly reduce the temperature of the battery.

[0046] It can be seen from this that the temperature control system provided in the embodiment of the present application can achieve rapid heating or cooling of the battery pack 303, and can quickly adjust the temperature of the battery pack 303 to a suitable temperature, thereby improving the charging efficiency of the battery pack 303, that is, increasing the charging speed of the vehicle.

[0047] In some embodiments, Figure 1 As shown, the liquid outlet of the compressor 201 is connected to the first liquid inlet of the second heat exchanger 202, the first liquid outlet of the second heat exchanger 202 is respectively connected to the liquid inlet of the first stop valve 203 and the liquid inlet of the second stop valve 206, the liquid outlet of the first stop valve 203 is connected to the liquid inlet of the third heat exchanger 204, the liquid outlet of the second stop valve 206 is connected to the liquid inlet of the fourth heat exchanger 207, the liquid outlet of the third heat exchanger 204 and the liquid outlet of the fourth heat exchanger 207 are both connected to the liquid inlet of the first expansion valve 205, the liquid outlet of the first expansion valve 205 is connected to the second liquid inlet of the first heat exchanger 103, and the second liquid outlet of the first heat exchanger 103 is connected to the liquid inlet of the compressor 201.

[0048] Specifically, when the battery pack 303 needs to be heated, Figure 2As shown, the first stop valve 203 is controlled to be opened, the second stop valve 206 is controlled to be closed, and the compressor 201 is controlled to work. At this time, the compressor 201 compresses the refrigerant to increase the temperature of the refrigerant, and the high-temperature refrigerant releases heat in the second heat exchanger 202. The heat released by the high-temperature refrigerant in the second heat exchanger 202 can be transferred to the battery pack 303 under the action of the second water pump 301 and the third water pump 302 to heat the battery pack 303. After releasing heat in the second heat exchanger 202, the refrigerant passes through the first stop valve 203, the third heat exchanger 204 and the first expansion valve 205 in sequence and enters the first heat exchanger 103. The refrigerant absorbs heat in the first heat exchanger 103, and the heat absorbed by the refrigerant comes from the heat generated by the heat generating component 102. After absorbing heat in the first heat exchanger 103, the refrigerant flows back to the compressor 201, and the compressor 201 compresses the refrigerant to increase the temperature of the refrigerant. Therefore, under the action of the compressor 201, the refrigerant circulates in the second temperature regulating loop formed by the compressor 201, the second heat exchanger 202, the first stop valve 203, the third heat exchanger 204, the first expansion valve 205 and the first heat exchanger 103. When flowing through the first heat exchanger 103, the refrigerant absorbs the heat generated by the heat-generating component 102, so that the temperature of the refrigerant increases. The heated refrigerant is further heated up by the compressor 201 and transmitted to the second heat exchanger 202. At this time, the heat generated by the heat-generating component 102 and the heat generated by the compressor 201 are transmitted to the second heat exchanger 202, so that the temperature of the coolant in the second heat exchanger 202 increases, and the high-temperature coolant heats the battery pack 303.

[0049] When the battery pack 303 needs to be cooled, Figure 3As shown, the first stop valve 203 is controlled to be closed, the second stop valve 206 is controlled to be opened, and the compressor 201 is controlled to work. At this time, the compressor 201 compresses the refrigerant to increase the temperature of the refrigerant, and the high-temperature refrigerant releases heat in the second heat exchanger 202. The heat released by the high-temperature refrigerant in the second heat exchanger 202 can be transferred to the fifth heat exchanger 305 under the action of the third water pump 302, and the fifth heat exchanger 305 dissipates the heat into the air. After releasing heat in the second heat exchanger 202, the refrigerant passes through the second stop valve 206, the fourth heat exchanger 207 and the first expansion valve 205 in sequence and enters the first heat exchanger 103. The refrigerant absorbs heat in the first heat exchanger 103, so that the temperature of the coolant in the first heat exchanger 103 is reduced. The low-temperature coolant is transferred to the battery pack 303 under the action of the second water pump 301 to cool the battery pack 303. After absorbing heat in the first heat exchanger 103, the refrigerant flows back to the compressor 201, and the compressor 201 compresses the refrigerant to increase the temperature of the refrigerant. Therefore, under the action of the compressor 201, the refrigerant circulates in the third temperature regulating loop composed of the compressor 201, the second heat exchanger 202, the second stop valve 206, the fourth heat exchanger 207, the first expansion valve 205 and the first heat exchanger 103. The refrigerant releases heat when passing through the second heat exchanger 202, and the temperature of the refrigerant is further reduced when the cooled refrigerant flows through the fourth heat exchanger 207. The low-temperature refrigerant absorbs heat when flowing through the first heat exchanger 103, so that the coolant in the first heat exchanger 103 is cooled down, and the cooled coolant cools the battery pack 303.

[0050] In some embodiments, Figure 4 As shown, the air-conditioning unit also includes a first one-way valve 208 and a second one-way valve 209, the liquid inlet of the first one-way valve 208 is connected to the liquid outlet of the third heat exchanger 204, the liquid inlet of the second one-way valve 209 is connected to the liquid outlet of the fourth heat exchanger 207, and the liquid outlet of the first one-way valve 208 and the liquid outlet of the second one-way valve 209 are both connected to the liquid inlet of the first expansion valve 205.

[0051] Specifically, when the battery pack 303 needs to be heated up, the first stop valve 203 is controlled to open, the second stop valve 206 is controlled to close, and the compressor 201 is controlled to work. At this time, the compressor 201, the second heat exchanger 202, the first stop valve 203, the third heat exchanger 204, the first one-way valve 208, the first expansion valve 205 and the first heat exchanger 103 constitute a second temperature regulation circuit, and the refrigerant can circulate in the second temperature regulation circuit. Due to the presence of the second one-way valve 209, the refrigerant in the second temperature regulation circuit will not flow into the fourth heat exchanger 207, ensuring that the second temperature regulation circuit can heat up the battery pack 303.

[0052] When the battery pack 303 needs to be cooled, the first stop valve 203 is controlled to be closed, the second stop valve 206 is controlled to be opened, and the compressor 201 is controlled to work. At this time, the compressor 201, the second heat exchanger 202, the second stop valve 206, the fourth heat exchanger 207, the second one-way valve 209, the first expansion valve 205 and the first heat exchanger 103 constitute a third temperature regulation loop. Due to the presence of the first one-way valve 208, the refrigerant in the third temperature regulation loop will not flow into the third heat exchanger 204, ensuring that the third temperature regulation loop can cool the battery pack 303.

[0053] In some embodiments, Figure 5 As shown, the air-conditioning unit also includes a coaxial tube 211, a first liquid inlet of the coaxial tube 211 is respectively connected to the liquid outlet of the first one-way valve 208 and the liquid outlet of the second one-way valve 209, the first liquid outlet of the coaxial tube 211 is connected to the liquid inlet of the first expansion valve 205, the second liquid inlet of the coaxial tube 211 is connected to the second liquid outlet of the first heat exchanger 103, and the second liquid outlet of the coaxial tube 211 is connected to the liquid inlet of the compressor 201.

[0054] Specifically, the first liquid inlet and the first liquid outlet of the coaxial tube 211 are connected, and the second liquid inlet and the second liquid outlet of the coaxial tube 211 are connected. When the air conditioning unit is in cooling mode, the coaxial tube 211 can improve the cooling effect of the air conditioning unit, reduce the energy consumption of the compressor 201, and thus reduce the energy consumption of the vehicle. At the same time, the use of the coaxial tube 211 can also reduce the displacement requirement of the compressor 201. Under the premise of ensuring the cooling effect, the vehicle can use a compressor 201 with a smaller displacement, thereby reducing the cost of the vehicle.

[0055] In some embodiments, Figure 6 As shown, the air-conditioning unit also includes a second expansion valve 212 and a third stop valve 210, the liquid inlet of the second expansion valve 212 is connected to the first liquid outlet of the coaxial tube 211, the liquid outlet of the second expansion valve 212 is connected to the liquid inlet of the fourth heat exchanger 207, the liquid inlet of the third stop valve 210 is connected to the liquid outlet of the fourth heat exchanger 207, and the liquid outlet of the third stop valve 210 is connected to the second liquid inlet of the coaxial tube 211.

[0056] Specifically, when the battery pack 303 is heated, the first stop valve 203 can be controlled to open, the second stop valve 206 can be controlled to close, the third stop valve 210 can be controlled to open, and the compressor 201 can be controlled to work. At this time, under the action of the compressor 201, the refrigerant can circulate in the circulation loop formed by the compressor 201, the third heat exchanger 204, the first one-way valve 208, the coaxial tube 211, the second expansion valve 212, the fourth heat exchanger 207, the third stop valve 210 and the coaxial tube 211. The compressor 201 compresses the refrigerant to increase the temperature of the refrigerant, and the high-temperature refrigerant dissipates heat in the second heat exchanger 202. Under the action of the second water pump 301 and the third water pump 302, the heat dissipated in the second heat exchanger 202 is transmitted to the battery pack 303, so as to heat the battery pack 303.

[0057] In some embodiments, Figure 7 As shown, the air conditioning unit also includes a liquid storage drying tank 213, the liquid inlet of the liquid storage drying tank 213 is connected to the liquid outlet of the first one-way valve 208 and the liquid outlet of the second one-way valve 209 respectively, and the liquid outlet of the liquid storage drying tank 213 is connected to the first liquid inlet of the coaxial tube 211.

[0058] Specifically, the liquid storage drying tank 213 is used to store the refrigerant and filter the moisture and other impurities in the refrigerant to ensure the purity of the refrigerant and the normal operation of the air conditioning unit.

[0059] In some embodiments, Figure 1-8 As shown, the liquid outlet of the second water pump 301 is connected to the liquid inlet of the battery pack 303, the liquid outlet of the battery pack 303 is connected to the third port of the first multi-way valve 10, the fourth port of the first multi-way valve 10 is connected to the first liquid port of the heater 304, the second liquid port of the heater 304 is connected to the third port of the second multi-way valve 20, the fourth port of the second multi-way valve 20 is connected to the second liquid inlet of the second heat exchanger 202, the second liquid outlet of the second heat exchanger 202 is connected to the liquid inlet of the third water pump 302, the liquid outlet of the third water pump 302 is connected to the fifth port of the second multi-way valve 20, the sixth port of the second multi-way valve 20 is connected to the liquid inlet of the second water pump 301, the liquid inlet of the fifth heat exchanger 305 is respectively connected to the liquid outlet of the heat generating component 102 and the first port of the first multi-way valve 10, and the liquid outlet of the fifth heat exchanger 305 is connected to the seventh port of the second multi-way valve 20.

[0060] Specifically, when the battery pack 303 needs to be heated, the heater 304 and the second water pump 301 are controlled to work, the third port and the fourth port of the first multi-way valve 10 are controlled to be connected, and the third port and the sixth port of the second multi-way valve 20 are controlled to be connected. At this time, the second water pump 301, the battery pack 303, the first multi-way valve 10, the heater 304 and the second multi-way valve 20 form a circulation loop. Under the action of the second water pump 301, the coolant can circulate in the circulation loop, and the heat generated by the heater 304 is transferred to the battery pack 303, heating the battery pack 303 and raising the temperature of the battery pack 303.

[0061] When the battery pack 303 needs to be heated, the second water pump 301, the third water pump 302 and the heater 304 can also be controlled to work, the third port of the first multi-way valve 10 is controlled to be connected to the fourth port, the third port of the second multi-way valve 20 is controlled to be connected to the fourth port, and the fifth port of the second multi-way valve 20 is controlled to be connected to the sixth port. At this time, the second water pump 301, the battery pack 303, the first multi-way valve 10, the heater 304, the second multi-way valve 20, the second heat exchanger 202 and the third water pump 302 constitute a fourth temperature regulation loop. Under the action of the second water pump 301 and the third water pump 302, the coolant circulates in the fourth temperature regulation loop, and the heat generated by the heater 304 can be transferred to the battery pack 303 to heat the battery pack 303. At the same time, the coolant in the fourth temperature regulation loop can also absorb the heat generated by the compressor 201 in the air conditioning unit in the second heat exchanger 202, and transfer the heat to the battery pack 303 to heat the battery pack 303. Thus, the heat generated by the heater 304 and the compressor 201 is used to heat the battery pack 303, thereby improving the heating efficiency of the battery pack 303 and allowing the battery pack 303 to heat up quickly.

[0062] When the battery pack 303 needs to be cooled down, the second water pump 301 and the third water pump 302 are controlled to work, the heater 304 is controlled not to work, the first port of the first multi-way valve 10 is controlled to be connected to the fourth port, the third port of the second multi-way valve 20 is controlled to be connected to the fifth port, and the seventh port of the second multi-way valve 20 is controlled to be connected to the fourth port. At this time, the third water pump 302, the second multi-way valve 20, the heater 304, the first multi-way valve 10, the fifth heat exchanger 305 and the second heat exchanger 202 constitute a fifth temperature regulating loop. Under the action of the third water pump 302, the coolant circulates in the fifth temperature regulating loop, absorbs heat in the second heat exchanger 202, transfers the absorbed heat to the fifth heat exchange, and dissipates the heat to the air through the fifth heat exchanger 305. Since the coolant in the fifth temperature regulating loop absorbs heat in the second heat exchanger 202, the temperature of the refrigerant in the second heat exchanger 202 will decrease. The cooled refrigerant releases heat again in the fourth heat exchanger 207, and the temperature of the refrigerant further decreases. The low-temperature refrigerant is transferred to the first heat exchanger 103 and absorbs heat in the first heat exchanger 103. Since the refrigerant absorbs heat in the first heat exchanger 103, the temperature of the coolant in the first heat exchanger 103 decreases. Under the action of the first water pump 101, the coolant circulates in the sixth temperature regulating loop composed of the second water pump 301, the battery pack 303, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20, and the low-temperature coolant in the first heat exchanger 103 is transferred to the battery pack 303, so as to achieve rapid cooling of the battery pack 303.

[0063] In some embodiments, Figure 8 As shown, the battery temperature adjustment unit also includes a three-way valve 306, a first port of the three-way valve 306 is respectively connected to the fourth port of the second multi-way valve 20 and the second liquid inlet of the second heat exchanger 202, a second port of the three-way valve 306 is connected to the liquid inlet of the third water pump 302, and a third port of the three-way valve 306 is connected to the second liquid outlet of the second heat exchanger 202.

[0064] Specifically, when the battery pack 303 needs to be cooled down quickly during vehicle charging, the first stop valve 203 is closed, the second stop valve 206 is opened, and the compressor 201 works. Under the action of the compressor 201, the refrigerant circulates in the third temperature regulation circuit formed by the compressor 201, the second heat exchanger 202, the second stop valve 206, the fourth heat exchanger 207, the first expansion valve 205 and the first heat exchanger 103. The heat release temperature of the refrigerant will decrease when it flows through the second heat exchanger 202. The cooled refrigerant releases heat when it flows through the fourth heat exchanger 207, and the temperature of the refrigerant is further reduced. The low-temperature refrigerant absorbs heat when it flows through the first heat exchanger 103, thereby cooling the coolant in the first heat exchanger 103.

[0065] The second water pump 301 is working. Under the action of the second water pump 301, the coolant circulates in the sixth temperature regulation loop composed of the second water pump 301, the battery pack 303, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20. The coolant absorbs heat when flowing through the first heat exchanger 103, and the temperature of the coolant will decrease. The low-temperature coolant absorbs heat when flowing through the battery pack 303, so that the temperature of the battery pack 303 decreases. Therefore, the third temperature regulation loop and the sixth temperature regulation loop cooperate to achieve cooling of the battery pack 303, improve the cooling capacity of the battery pack 303, and can quickly reduce the temperature of the battery.

[0066] When the heat dissipation requirement of the second heat exchanger 202 in the third temperature regulation loop is low (for example, the ambient temperature is low), the first port and the second port of the three-way valve 306 are controlled to be connected, and the third water pump 302 and the heater 304 are controlled not to work. At this time, the fifth heat exchanger 305 is no longer needed to dissipate heat for the second heat exchanger 202. The heat dissipation requirement can be met by mainly dissipating heat through the fourth heat exchanger 207 in the third temperature regulation loop, thereby reducing the energy consumption of the vehicle while achieving rapid cooling of the battery pack 303.

[0067] When the heat dissipation requirement of the second heat exchanger 202 in the third temperature regulating loop is high (for example, the ambient temperature is low), the second port and the third port of the three-way valve 306 are controlled to be connected, the heater 304 is controlled not to work, and the third water pump 302 is controlled to work. Under the action of the third water pump 302, the coolant circulates in the fifth temperature regulating loop composed of the third water pump 302, the second multi-way valve 20, the heater 304, the first multi-way valve 10, the fifth heat exchanger 305 and the second heat exchanger 202. The coolant releases heat at the fifth heat exchanger 305 and the temperature is reduced. The low-temperature coolant is transferred to the second heat exchanger 202 under the action of the third water pump 302. The coolant absorbs heat at the second heat exchanger 202, so that the temperature of the refrigerant in the second heat exchanger 202 is reduced. At this time, the heat is dissipated through the second heat exchanger 202 and the fourth heat exchanger 207 in the third temperature regulating loop, which meets the heat dissipation requirement of the third temperature regulating loop, thereby ensuring the rapid cooling of the battery.

[0068] In some embodiments, the liquid outlet of the first water pump 101 is connected to the liquid inlet of the heat generating component 102, the liquid outlet of the heat generating component 102 is connected to the first port of the first multi-way valve 10, the second port of the first multi-way valve 10 is connected to the first liquid inlet of the first heat exchanger 103, the first liquid outlet of the first heat exchanger 103 is connected to the first port of the second multi-way valve 20, and the second port of the second multi-way valve 20 is connected to the liquid inlet of the first water pump 101.

[0069] Specifically, the heat generating component 102 may be an electrical device such as a power supply and a bridge on the vehicle. When the vehicle is charged, current will flow through the heat generating component 102, so that the component will generate heat.

[0070] When the battery pack 303 needs to be heated, the first water pump 101 is controlled to work, the first port and the second port of the first multi-way valve 10 are controlled to be connected, and the second port and the first port of the second multi-way valve 20 are controlled to be connected. At this time, the first water pump 101, the heat generating component 102, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20 constitute a first temperature regulating loop. Under the action of the first water pump 101, the coolant circulates in the first temperature regulating loop constituted by the first water pump 101, the heat generating component 102, the first multi-way valve 10, the first heat exchanger 103 and the second multi-way valve 20, and the heat generated by the heat generating component 102 is transferred to the first heat exchanger 103. Under the action of the compressor 201, the heat in the first heat exchanger 103 and the heat generated by the compressor 201 are transferred to the second heat exchanger 202. Under the action of the second water pump 301 and the third water pump 302, the heat in the second heat exchanger 202 and the heat generated by the heater 304 are transferred to the battery pack 303 to heat the battery pack 303. Thus, the heat generated by the heat generating component 102, the heat generated by the heater 304 and the heat generated by the compressor 201 heat the battery pack 303 at the same time, thereby improving the heating efficiency of the battery pack 303 and increasing the temperature rise speed of the battery pack 303.

[0071] When the vehicle is in an environment where the temperature is too low, the fourth heat exchanger 207 in the air conditioning unit cannot absorb heat from the air, so that the air conditioning unit cannot heat the vehicle.

[0072] In order to solve the above problems, when the ambient temperature is too low, the first port and the second port of the three-way valve 306 are controlled to be connected, the fifth port and the third port of the second multi-way valve 20 are controlled to be connected, the fourth port and the first port of the second multi-way valve 20 are controlled to be connected, the second port and the fourth port of the first multi-way valve 10 are controlled to be connected, the first stop valve 203 is controlled to be opened, the second stop valve 206 and the third stop valve 210 are controlled to be closed, and the heater 304, the third water pump 302 and the compressor 201 are controlled to work. At this time, the third water pump 302, the second multi-way valve 20, the heater 304, the first multi-way valve 10, the first heat exchanger 103, the second multi-way valve 20 and the three-way valve 306 form a circulation loop, and under the action of the third water pump 302, the heat generated by the heater 304 is transferred to the first heat exchanger 103. The compressor 201, the second heat exchanger 202, the first stop valve 203, the third heat exchanger 204, the first non-return valve 208, the liquid storage drying tank 213, the coaxial tube 211, the first expansion valve 205, the first heat exchanger 103 and the coaxial tube 211 form a circulation loop. Under the action of the compressor 201, the heat absorbed by the refrigerant in the first heat exchanger 103 and the heat generated by the compressor 201 are transferred to the third heat exchanger 204, and the third heat exchanger 204 dissipates the heat into the vehicle's cockpit to achieve heating of the cockpit. Therefore, when the ambient temperature is too low, the heater 304 provides a heat source for the air conditioning unit, so that the air conditioning unit can work normally, achieve heating in the cockpit, and improve the user experience.

[0073] The present application also provides a vehicle, including the temperature control system described above, when the vehicle needs to quickly heat up the battery pack during charging, the heat-generating components on the vehicle (e.g., the power supply, bridge, etc. on the vehicle) generate heat, the first water pump works, under the action of the first water pump, the coolant circulates in the first temperature control loop composed of the first water pump, the heat-generating components, the first multi-way valve, the first heat exchanger and the second multi-way valve, and the heat generated by the heat-generating components is transferred to the first heat exchanger. The compressor works to generate heat, under the action of the compressor, the refrigerant circulates in the second temperature control loop composed of the compressor, the second heat exchanger, the first stop valve, the third heat exchanger, the first expansion valve and the first heat exchanger, the refrigerant absorbs the heat generated by the heat-generating components when flowing through the first heat exchanger, so that the temperature of the refrigerant increases, the heated refrigerant is further heated up under the action of the compressor and transferred to the second heat exchanger, at which time the heat generated by the heat-generating components and the heat generated by the compressor are transferred to the second heat exchanger. The heater generates heat, and the second water pump and the third water pump work. Under the action of the second water pump and the third water pump, the coolant circulates in the fourth temperature regulating loop composed of the second water pump, the battery pack, the first multi-way valve, the heater, the second multi-way valve, the second heat exchanger and the third water pump. The coolant absorbs heat and heats up in the second heat exchanger. At the same time, the heater heats the coolant to increase the temperature of the coolant. The heated coolant flows through the battery pack to increase the temperature of the battery pack. Thus, the temperature of the battery pack is increased by the cooperation of the first temperature regulating loop, the second temperature regulating loop and the fourth temperature regulating loop, that is, the heat-generating components, the heater and the compressor all generate heat to heat the battery pack, which improves the heating capacity of the battery pack and can quickly increase the temperature of the battery pack.

[0074] When the battery pack needs to be cooled down quickly during vehicle charging, the heater does not work and the third water pump works. Under the action of the third water pump, the coolant circulates in the fifth temperature regulating loop composed of the third water pump, the second multi-way valve, the heater, the first multi-way valve, the fifth heat exchanger and the second heat exchanger. The coolant releases heat at the fifth heat exchanger and the temperature is reduced. The low-temperature coolant is transferred to the second heat exchanger under the action of the third water pump. The coolant absorbs heat at the second heat exchanger, so that the temperature of the refrigerant in the second heat exchanger is reduced. The compressor works. Under the action of the compressor, the refrigerant circulates in the third temperature regulating loop composed of the compressor, the second heat exchanger, the second stop valve, the fourth heat exchanger, the first expansion valve and the first heat exchanger. The refrigerant releases heat when flowing through the second heat exchanger and the temperature of the refrigerant is further reduced. The low-temperature refrigerant absorbs heat when flowing through the first heat exchanger, so that the coolant in the first heat exchanger is cooled. The second water pump is working. Under the action of the second water pump, the coolant circulates in the sixth temperature regulation loop composed of the second water pump, the battery pack, the first multi-way valve, the first heat exchanger and the second multi-way valve. The coolant absorbs heat when flowing through the first heat exchanger, and the temperature of the coolant will decrease. The low-temperature coolant absorbs heat when flowing through the battery pack, which reduces the temperature of the battery pack. Therefore, the third temperature regulation loop, the fifth temperature regulation loop and the sixth temperature regulation loop cooperate to achieve cooling of the battery pack, improve the cooling capacity of the battery pack, and can quickly reduce the temperature of the battery.

[0075] It can be seen from this that the vehicle provided in the embodiment of the present application can achieve rapid heating or cooling of the battery pack, and can quickly adjust the temperature of the battery pack to a suitable temperature, thereby improving the charging efficiency of the battery pack, that is, increasing the charging speed of the vehicle.

[0076] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A temperature control system, characterized in that: It includes a battery temperature regulating unit, an air conditioning unit, a heat generating unit, a first multi-way valve and a second multi-way valve; The heat generating unit comprises a first water pump, a heat generating component and a first heat exchanger; the first water pump, the heat generating component, the first multi-way valve, the first heat exchanger and the second multi-way valve constitute a first temperature regulating loop; The air conditioning unit includes a compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first expansion valve, a first stop valve and a second stop valve; the compressor, the second heat exchanger, the first stop valve, the third heat exchanger, the first expansion valve and the first heat exchanger constitute a second temperature regulating loop; the compressor, the second heat exchanger, the second stop valve, the fourth heat exchanger, the first expansion valve and the first heat exchanger constitute a third temperature regulating loop; The battery temperature regulation unit includes a second water pump, a third water pump, a battery pack, a heater and a fifth heat exchanger; the second water pump, the battery pack, the first multi-way valve, the heater, the second multi-way valve, the second heat exchanger and the third water pump constitute a fourth temperature regulation loop; the third water pump, the second multi-way valve, the heater, the first multi-way valve, the fifth heat exchanger and the second heat exchanger constitute a fifth temperature regulation loop; the second water pump, the battery pack, the first multi-way valve, the first heat exchanger and the second multi-way valve constitute a sixth temperature regulation loop.

2. The temperature control system according to claim 1, characterized in that: The liquid outlet of the first water pump is connected to the liquid inlet of the heat generating component, the liquid outlet of the heat generating component is connected to the first port of the first multi-way valve, the second port of the first multi-way valve is connected to the first liquid inlet of the first heat exchanger, the first liquid outlet of the first heat exchanger is connected to the first port of the second multi-way valve, and the second port of the second multi-way valve is connected to the liquid inlet of the first water pump.

3. The temperature control system according to claim 1, characterized in that: The liquid outlet of the second water pump is connected to the liquid inlet of the battery pack, the liquid outlet of the battery pack is connected to the third port of the first multi-way valve, the fourth port of the first multi-way valve is connected to the first liquid port of the heater, the second liquid port of the heater is connected to the third port of the second multi-way valve, the fourth port of the second multi-way valve is connected to the second liquid inlet of the second heat exchanger, the second liquid outlet of the second heat exchanger is connected to the liquid inlet of the third water pump, the liquid outlet of the third water pump is connected to the fifth port of the second multi-way valve, the sixth port of the second multi-way valve is connected to the liquid inlet of the second water pump, the liquid inlet of the fifth heat exchanger is respectively connected to the liquid outlet of the heat generating component and the first port of the first multi-way valve, and the liquid outlet of the fifth heat exchanger is connected to the seventh port of the second multi-way valve.

4. The temperature control system according to claim 3, characterized in that: The battery temperature adjustment unit also includes a three-way valve, a first port of the three-way valve is respectively connected to the fourth port of the second multi-way valve and the second liquid inlet of the second heat exchanger, a second port of the three-way valve is connected to the liquid inlet of the third water pump, and a third port of the three-way valve is connected to the second liquid outlet of the second heat exchanger.

5. The temperature control system according to any one of claims 1 to 4, characterized in that: The liquid outlet of the compressor is connected to the first liquid inlet of the second heat exchanger, the first liquid outlet of the second heat exchanger is respectively connected to the liquid inlet of the first stop valve and the liquid inlet of the second stop valve, the liquid outlet of the first stop valve is connected to the liquid inlet of the third heat exchanger, the liquid outlet of the second stop valve is connected to the liquid inlet of the fourth heat exchanger, the liquid outlet of the third heat exchanger and the liquid outlet of the fourth heat exchanger are both connected to the liquid inlet of the first expansion valve, the liquid outlet of the first expansion valve is connected to the second liquid inlet of the first heat exchanger, and the second liquid outlet of the first heat exchanger is connected to the liquid inlet of the compressor.

6. The temperature control system according to claim 5, characterized in that: The air conditioning unit also includes a first one-way valve and a second one-way valve, the liquid inlet of the first one-way valve is connected to the liquid outlet of the third heat exchanger, the liquid inlet of the second one-way valve is connected to the liquid outlet of the fourth heat exchanger, and the liquid outlets of the first one-way valve and the second one-way valve are both connected to the liquid inlet of the first expansion valve.

7. The temperature control system according to claim 6, characterized in that: The air conditioning unit also includes a coaxial tube, a first liquid inlet of the coaxial tube is respectively connected to the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve, the first liquid outlet of the coaxial tube is connected to the liquid inlet of the first expansion valve, the second liquid inlet of the coaxial tube is connected to the second liquid outlet of the first heat exchanger, and the second liquid outlet of the coaxial tube is connected to the liquid inlet of the compressor.

8. The temperature adjustment system according to claim 7, characterized in that: The air conditioning unit also includes a second expansion valve and a third stop valve, the liquid inlet of the second expansion valve is connected to the first liquid outlet of the coaxial tube, the liquid outlet of the second expansion valve is connected to the liquid inlet of the fourth heat exchanger, the liquid inlet of the third stop valve is connected to the liquid outlet of the fourth heat exchanger, and the liquid outlet of the third stop valve is connected to the second liquid inlet of the coaxial tube.

9. The temperature control system according to claim 8, characterized in that: The air conditioning unit further comprises a liquid storage drying tank, the liquid inlet of the liquid storage drying tank is respectively connected to the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve, and the liquid outlet of the liquid storage drying tank is connected to the first liquid inlet of the coaxial tube.

10. A vehicle, characterized in that: A temperature regulating system comprising any one of claims 1 to 9.

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