CN115891624A

CN115891624A - Thermal management system and vehicle with same

Info

Publication number: CN115891624A
Application number: CN202111164564.5A
Authority: CN
Inventors: 唐一峰; 赵尚仲; 张俊岩; 刘代成
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-04

Abstract

The invention discloses a thermal management system and a vehicle with the same, wherein the thermal management system comprises a heat pump module, a battery water path, a heat exchange water path, a radiator water path, an electric assembly water path and a warm air water path; the first heat exchanger is provided with a first heat exchange passage and a second heat exchange passage; the second heat exchanger is provided with a third heat exchange passage connected with the heat pump module and a fourth heat exchange passage connected with the warm air water path; the control valve group is characterized in that a waterway of the first-state electric assembly is connected with a radiator waterway in series and/or a battery waterway is connected with a heat exchange waterway in series; in the second state, the electric assembly water path is connected with the heat exchange water path in series and/or the battery water path is connected with the radiator water path in series; and in the third state, the battery water path, the heat exchange water path, the radiator water path and the electric assembly water path are connected in series. The heat management system provided by the embodiment of the invention can fully utilize the waste heat of the battery, the electric assembly and the engine, heat or cool the battery and the electric assembly under various working conditions, and has the advantages of high energy utilization rate, high integration level and the like.

Description

Thermal management system and vehicle with same

Technical Field

The invention relates to the technical field of vehicles, in particular to a thermal management system and a vehicle with the same.

Background

The heat management system of the vehicle in the related art can cool the interior of the vehicle through the heat pump module and cool the battery and the electric assembly by utilizing the heat pump module, but the heat management system in the related art cannot fully utilize the waste heat of the electric assembly water path, the battery water path and the warm air water path, cannot realize various working conditions such as independent refrigeration or heating of the battery and the electric assembly, common refrigeration or heating in series connection, heating of the battery by utilizing the waste heat of the electric assembly in series connection and the like, and has low integral integration level and high energy consumption of the vehicle.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a thermal management system, which not only can fully utilize the residual heat of the battery, the electric assembly and the engine, but also can heat or cool the battery and the electric assembly under various working conditions, and has the advantages of high energy utilization rate and integration level, etc.

The invention also provides a vehicle with the thermal management system.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a thermal management system, including: the system comprises a heat pump module, a battery waterway, a heat exchange waterway, a radiator waterway, an electric assembly waterway and a warm air waterway; the first heat exchanger is provided with a first heat exchange passage and a second heat exchange passage, the first heat exchange passage is connected with the heat pump module, and the second heat exchange passage is communicated with the heat exchange waterway; the second heat exchanger is provided with a third heat exchange passage and a fourth heat exchange passage, the third heat exchange passage is communicated with the heat pump module, and the fourth heat exchange passage is connected with the warm air waterway; the control valve group can be switched among a first state, a second state and a third state and is respectively communicated with the battery waterway, the heat exchange waterway, the radiator waterway and the electric assembly waterway; when the control valve group is in the first state, the electric assembly water path is communicated with the radiator water path in series, and/or the battery water path is communicated with the heat exchange water path in series; when the control valve group is in the second state, the electric assembly water path is communicated with the heat exchange water path in series, and/or the battery water path is communicated with the radiator water path in series; when the control valve group is in the third state, the battery water path, the heat exchange water path, the radiator water path and the electric assembly water path are communicated in series.

The thermal management system provided by the embodiment of the invention not only can fully utilize the waste heat of the battery, the electric assembly and the engine, but also can heat or cool the battery and the electric assembly under various working conditions, and has the advantages of high energy utilization rate, high integration level and the like.

According to some embodiments of the invention, the control valve block comprises: the first four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with one end of the radiator water channel, the second valve port is connected with one end of the battery water channel, the third valve port is connected with one end of the heat exchange water channel, and the fourth valve port is connected with one end of the electric assembly water channel; the second four-way valve is provided with a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port, the fifth valve port is connected with the other end of the electric assembly water channel, the sixth valve port is connected with the other end of the radiator water channel, the seventh valve port is connected with the other end of the battery water channel, and the eighth valve port is connected with the other end of the heat exchange water channel; when the control valve group is in the first state, the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port; when the control valve group is in the second state, the first valve port is communicated with the second valve port, the third valve port is communicated with the fourth valve port, the fifth valve port is communicated with the eighth valve port, and the sixth valve port is communicated with the seventh valve port; when the control valve group is in the third state, the first valve port is communicated with the second valve port, the third valve port is communicated with the fourth valve port, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port, or the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, the fifth valve port is communicated with the eighth valve port, and the sixth valve port is communicated with the seventh valve port.

According to some embodiments of the invention, the electric powertrain waterway comprises: an electronic control assembly; the intercooler is connected with the electric control assembly in parallel; the motor, the motor with automatically controlled subassembly is established ties just the motor is located the low reaches of automatically controlled subassembly, or the motor with the intercooler is established ties just the motor is located the low reaches of intercooler.

According to some embodiments of the invention, the radiator water circuit comprises: the radiator is connected with the first straight connecting branch in parallel, and cooling liquid in a radiator water path can selectively flow through the radiator or the first straight connecting branch.

According to some embodiments of the invention, the battery water circuit comprises: the battery and the second directly link the branch road, the battery with the second directly links the branch road parallel connection, just coolant liquid in the battery water route can selectively flow through the battery or the second directly links the branch road.

According to some embodiments of the invention, the battery water circuit comprises: a heater connected to the battery.

According to some embodiments of the invention, the heater is a PTC or a tail gas heat exchanger.

According to some embodiments of the invention, the heat pump module comprises: one end of the third heat exchange passage is connected with one end of the compressor; one end of the outdoor heat exchanger is selectively connected or disconnected with the other end of the third heat exchange passage through a refrigeration front branch, and the other end of the outdoor heat exchanger is selectively connected or disconnected with the other end of the third heat exchange passage through a heating front branch; one end of the in-cabin evaporator is selectively connected or disconnected with the other end of the out-cabin heat exchanger through a refrigeration back branch; the gas-liquid separator is connected between the other end of the compressor and the other end of the in-cabin evaporator, and the one end of the outdoor heat exchanger is selectively connected or disconnected with the other end of the compressor through a heating back branch and the gas-liquid separator; one end of the first heat exchange passage is selectively connected or disconnected with the other end of the third heat exchange passage through the heating front branch, the one end of the first heat exchange passage is selectively connected or disconnected with the other end of the outdoor heat exchanger through the refrigeration rear branch, and the other end of the first heat exchange passage is connected with the other end of the compressor through the gas-liquid separator.

According to some embodiments of the present invention, the plurality of the in-cabin evaporators include a first in-cabin evaporator and a second in-cabin evaporator, one end of the first in-cabin evaporator is connected to the refrigeration back branch line through an expansion valve, the other end of the first in-cabin evaporator is connected to the gas-liquid separator, one end of the second in-cabin evaporator is connected to the refrigeration back branch line through another expansion valve, and the other end of the second in-cabin evaporator is connected to the gas-liquid separator.

According to some embodiments of the invention, a first two-way valve is arranged on the refrigeration front pipeline; a first check valve and a second two-way valve are arranged on the refrigeration rear branch passage, and the first check valve allows the refrigerant of the outdoor heat exchanger to flow to the indoor evaporator and prevents the refrigerant of the indoor evaporator from flowing to the outdoor heat exchanger; a third two-way valve, a first electromagnetic expansion valve and a second one-way valve are arranged on the heating front pipeline, and the second one-way valve allows the refrigerant of the cabin evaporator to flow to the outdoor heat exchanger and prevents the refrigerant of the outdoor heat exchanger from flowing to the cabin evaporator; a fourth two-way valve is arranged on the heating rear branch circuit; and one end of the first heat exchange passage is connected with the heating front branch and the refrigerating rear branch through a second electromagnetic expansion valve.

According to some embodiments of the invention, the heating front road comprises: one end of the first section is connected with the other end of the third heat exchange passage, and the other end of the first section is respectively connected with the first one-way valve, the second two-way valve and the second electromagnetic expansion valve; one end of the second section is connected with the other end of the first section, and the other end of the second section is connected with the other end of the extravehicular heat exchanger; the third two-way valve is arranged on the first section, and the first electromagnetic expansion valve and the second one-way valve are arranged on the second section.

According to some embodiments of the invention, the gas-liquid separator comprises: a first flow path, one end of which is connected to the first check valve and the one end of the first stage, and the other end of which is connected to the second two-way valve, the second electromagnetic expansion valve, and the one end of the second stage; and one end of the second flow path is connected with the other end of the under-cabin evaporator, the heating rear branch and the other end of the first heat exchange path, and the other end of the second flow path is connected with the other end of the compressor.

According to some embodiments of the invention, the warm wind water circuit comprises: an engine; the engine and the fourth heat exchange channel are connected in parallel and then connected in series with the warm air system, and the cooling liquid in the warm air water path can selectively flow through at least one of the engine and the fourth heat exchange channel.

According to some embodiments of the invention, a warm air system is arranged on the warm air waterway, and the warm air system comprises a front warm air and a rear warm air which are connected in parallel.

According to some embodiments of the invention, the thermal management system further comprises: the third heat exchanger is provided with a fifth heat exchange passage and a sixth heat exchange passage, the fifth heat exchange passage is connected with the heat exchange waterway, and the sixth heat exchange passage is connected with the warm air waterway in series.

According to a second aspect of the invention, a vehicle is provided, which comprises the thermal management system according to the first aspect of the invention.

According to the vehicle in the embodiment of the second aspect of the invention, by using the thermal management system in the embodiment of the first aspect of the invention, not only can the waste heat of the battery, the electric assembly and the engine be fully utilized, but also the battery and the electric assembly can be heated or cooled under various working conditions, and the vehicle has the advantages of high energy utilization rate, high integration level and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a valve block of a thermal management system according to an embodiment of the present invention in a first state.

Fig. 3 is another schematic diagram of a valve block of a thermal management system in a first state according to an embodiment of the present invention.

FIG. 4 is a further structural schematic diagram of a valve block of a thermal management system in a first state according to an embodiment of the present invention.

Figure 5 is a schematic diagram of a thermal management system having a set of control valves in a second state according to an embodiment of the present invention.

Fig. 6 is another schematic diagram of a valve block of a thermal management system in a second state according to an embodiment of the present invention.

Figure 7 is yet another structural schematic diagram of a set of control valves of a thermal management system according to an embodiment of the present invention in a second state.

Fig. 8 is another structural schematic diagram of a valve block of a thermal management system in a second state according to an embodiment of the present invention.

Figure 9 is a schematic diagram of a valve block of a thermal management system in a third state according to an embodiment of the present invention.

Figure 10 is a schematic diagram of a heat pump module of a thermal management system according to an embodiment of the present invention.

Reference numerals are as follows:

a heat management system 1,

The heat pump system comprises a heat pump module 100, a compressor 110, an outdoor heat exchanger 130, a refrigeration front branch 131, a refrigeration rear branch 132, a heating front branch 133, a first section 134, a second section 135, a heating rear branch 136, a gas-liquid separator 140, a first flow path 141, a second flow path 142, an indoor evaporator 150, a first indoor evaporator 151, a second indoor evaporator 152, a battery water path 200, a battery 210, a second three-way valve 220, a heater 230, a second direct-connected branch 240,

A heat exchange water path 240,

A radiator water path 300, a radiator 310, a first three-way valve 320, a first direct branch 330,

An electric assembly water circuit 400, an electric control component 410, an intercooler 420, a motor 430,

A first heat exchanger 500, a second heat exchanger 510,

A control valve group 600, a first four-way valve 610, a first valve port 611, a second valve port 612, a third valve port 613, a fourth valve port 614 second four-way valve 620, fifth port 621, sixth port 622, seventh port 623, eighth port 624,

A warm air water path 700, an engine 710,

A third heat exchanger 720, a warm air system 730, a front warm air 731, a rear warm air 732, a third three-way valve 740,

A first two-way valve 800, a third two-way valve 810, a second two-way valve 820, a fourth two-way valve 830,

A first check valve 900, a second check valve 910, a first electromagnetic expansion valve 920, a second electromagnetic expansion valve 930, an expansion valve 940, and a water pump 950.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more, and "several" means one or more.

A thermal management system 1 according to an embodiment of the present invention is first described with reference to the drawings.

As shown in fig. 1-10, a thermal management system 1 according to an embodiment of the present invention includes a heat pump module 100, a battery water circuit 200, a heat exchange water circuit 240, a radiator water circuit 300, an electric assembly water circuit 400, a warm air water circuit 700, a first heat exchanger 500, a second heat exchanger 510, and a control valve group 600.

The first heat exchanger 500 is provided with a first heat exchange passage and a second heat exchange passage, the first heat exchange passage is communicated with the heat pump module 100, the second heat exchange passage is communicated with the heat exchange water channel 240, the second heat exchanger 510 is provided with a third heat exchange passage and a fourth heat exchange passage, the third heat exchange passage is connected with the heat pump module 100, the fourth heat exchange passage is connected with the warm air water channel 710, and the control valve group 600 is switchable among a first state, a second state and a third state and is respectively communicated with the battery water channel 200, the heat exchange water channel 240, the radiator water channel 300 and the electric assembly water channel 400.

For example, the first heat exchanger 500 and the second heat exchanger 510 may be plate heat exchangers, the refrigerant of the heat pump module 100 and the coolant of the heat exchange water channel 240 exchange heat with each other through the first heat exchanger 500, and the refrigerant of the heat pump module 100 and the coolant of the warm air water channel 700 exchange heat with each other through the second heat exchanger 510.

It should be noted that the radiator water path 300 and the heat exchange water path 240 may be provided with water pumps 950, or the electric assembly water path 400 and the battery water path 200 may be provided with water pumps 950, or the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric assembly water path 400 may be provided with water pumps 950. The coolant in the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric motor assembly water path 400 may be the same.

When the control valve group 600 is in the first state, the electric assembly water path 400 is in serial communication with the radiator water path 300, and/or the battery water path 200 is in serial communication with the heat exchange water path 240; when the control valve group 600 is in the second state, the electric assembly water path 400 is communicated with the heat exchange water path 240 in series, and/or the battery water path 200 is communicated with the radiator water path 300 in series; when the valve block 600 is in the third state, the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric assembly water path 400 are connected in series.

For example, the refrigerant of the heat pump module 100 may be R-410A, R-407C, R-134a, etc., and the coolant of the battery water path 200, the heat exchange water path 240, the radiator water path 300, the electric assembly water path 400, and the warm air water path 710 may be a mixture of water and ethylene glycol.

According to the thermal management system 1 of the embodiment of the present invention, the first heat exchanger 500 is provided with the first heat exchange path and the second heat exchange path, the first heat exchange path is connected to the heat pump module 100, the second heat exchange path is connected to the heat exchange water path 240, the first heat exchange path is not connected to the second heat exchange path, the refrigerant of the heat pump module 100 may flow through the first heat exchange path, the coolant of the heat exchange water path 240 may flow through the second heat exchange path, and the refrigerant of the heat pump module 100 and the coolant of the heat exchange water path 240 may exchange heat through the first heat exchanger 500.

As shown in fig. 2-4, when the valve block 600 is in the first state, the electric assembly waterway 400 is in series communication with the radiator waterway 300, and/or the battery waterway 200 is in series communication with the heat exchange waterway 240. In other words, the electric assembly water path 400 and the radiator water path 300 form a single water path, so that the coolant can circulate in the electric assembly water path 400 and the radiator water path 300, and the temperature of the coolant is reduced when the coolant flows through the radiator water path 300, and the coolant flowing out of the radiator water path 300 can cool the electric assembly water path 400, so as to ensure the normal operation of the electric assembly. Meanwhile, the battery water path 200 and the heat exchange water path 240 form a single water path, and the coolant may circulate in the battery water path 200 and the heat exchange water path 240. When the heat pump module 100 is used for cooling, the temperature of the coolant in the heat exchange water path 240 is reduced by the refrigerant in the heat pump module 100, that is, the temperature of the coolant in the battery water path 200 is reduced, and at this time, the coolant can dissipate heat and reduce temperature for the battery 210, so that the battery 210 is prevented from being over-heated, and the normal operation of the battery 210 is ensured; when the heat pump module 100 heats, the heat exchange water path 240 can absorb the waste heat of the battery 210 through the battery water path 200, and then supply heat to the heat pump module 100 through the first heat exchanger 500, so that the heating difficulty of the heat pump module 100 is reduced, the waste heat of the battery 210 is fully utilized, the energy utilization rate is improved, and the energy consumption is reduced.

As shown in fig. 5-8, when valve block 600 is in the second state, electric assembly water path 400 is in series communication with heat exchange water path 240, and/or battery water path 200 is in series communication with radiator water path 300. In other words, the electric assembly water circuit 400 and the heat exchange water circuit 240 form a single water circuit, and the cooling fluid can circulate in the electric assembly water circuit 400 and the heat exchange water circuit 240. When the heat pump module 100 is used for refrigerating, the temperature of the coolant in the heat exchange water channel 240 is reduced by the refrigerant in the heat pump module 100, that is, the temperature of the coolant in the electric assembly water channel 400 is reduced, and at the moment, the coolant is used for dissipating heat and reducing temperature of the electric assembly water channel 400, so that the electric assembly is prevented from being overhigh in temperature, and the normal operation of the electric assembly is ensured; when the heat pump module 100 heats, the heat exchange water path 240 can absorb the waste heat of the electric assembly through the electric assembly water path 400, and then the first heat exchanger 500 supplies heat to the heat pump module 100, so that the heating difficulty of the heat pump module 100 is reduced, the waste heat of the electric assembly is fully utilized, the energy utilization rate is improved, and the energy consumption is reduced. Meanwhile, the battery water path 200 and the radiator water path 300 form an independent water path, and the coolant can circulate in the battery water path 200 and the radiator water path 300, so that the temperature of the coolant is reduced when the coolant flows through the radiator water path 300, and the coolant flowing out of the radiator water path 300 can dissipate heat and reduce the temperature of the battery water path 200, so as to ensure the normal operation of the battery 210.

As shown in fig. 9, when the valve block 600 is in the third state, the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric assembly water path 400 are connected in series. In other words, the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric motor assembly water path 400 form an integrated water path, and the coolant circulates among the battery water path 200, the heat exchange water path 240, the radiator water path 300, and the electric motor assembly water path 400.

When the heat pump module 100 is used for refrigeration, the temperature of the coolant of the heat exchange water path 240 is reduced by the refrigerant of the heat pump module 100, that is, the temperatures of the coolant of the electric assembly water path 400 and the battery water path 200 are reduced, and the coolant is used for heat dissipation and cooling of the electric assembly water path 400 and the battery water path 200, so that the temperature of the electric assembly and the temperature of the battery 210 are prevented from being too high, and the normal operation of the battery 210 and the electric assembly is ensured;

when the heat pump module 100 heats, the heat exchange water path 240 can absorb the waste heat of the electric assembly through the electric assembly water path 400, and simultaneously absorb the waste heat of the battery 210 through the battery water path 200, and then the first heat exchanger 500 supplies heat for the heat pump module 100, so that the heating difficulty of the heat pump module 100 is reduced, the waste heat of the electric assembly and the battery 210 is fully utilized, the energy utilization rate is improved, and the energy consumption is reduced.

In addition, when the vehicle is started, the battery 210 can be heated by using the waste heat of the electric assembly alone, so that the vehicle starting time is shortened.

Through switching of control valve group 600 between first state, second state and third state, adjust the intercommunication state in a plurality of waterways, not only the regulation mode is simple and convenient, can also reduce arranging of pipeline, and then reduce thermal management system 1's whole volume, the integrated level is higher.

Moreover, through the arrangement of the control valve group 600 and the first heat exchanger 500, the heat pump module 100 can realize two functions of cooling and heating, and the waste heat of the battery 210 and the electric assembly is fully utilized, so that the energy consumption is reduced, the performance of the vehicle under various different working conditions is optimized, the service life of the vehicle can be prolonged, and the use cost is reduced.

In addition, the second heat exchanger 510 has a third heat exchange path and a fourth heat exchange path, the third heat exchange path is connected to the heat pump module 100, the fourth heat exchange path is connected to the warm air water path 700, the third heat exchange path is not connected to the fourth heat exchange path, the refrigerant of the heat pump module 100 may flow through the third heat exchange path, the coolant of the warm air water path 700 may flow through the fourth heat exchange path, and the refrigerant of the heat pump module 100 and the coolant of the warm air water path 700 may exchange heat through the second heat exchanger 510. Like this, when heat pump module 100 heats, the gaseous phase refrigerant that compressor 110 came out compresses into high-temperature high-pressure gas, the refrigerant passes through second heat exchanger 510, can be with heat transfer to warm braw water route 700, and bring the heat of refrigerant to passenger's cabin through the warm braw and realize passenger's cabin heating, make the refrigerant condense simultaneously, second heat exchanger 510 can play the effect of condenser this moment, be favorable to improving energy utilization, when heat pump module 100 refrigerates, can regard as ordinary pipeline with the third heat transfer route of second heat exchanger 510, be used for circulating heat pump module 100's refrigerant.

Thus, the thermal management system 1 according to the embodiment of the present invention not only can fully utilize the residual heat of the battery 210, the electric assembly, and the hot air water path 700, but also can heat or cool the battery and the electric assembly under various working conditions, and has the advantages of high energy utilization rate and integration level, etc.

In some embodiments of the present invention, control valve assembly 600 includes a first four-way valve 610 and a second four-way valve 620.

As shown in fig. 1, the first four-way valve 610 has a first port 611, a second port 612, a third port 613 and a fourth port 614, the first port 611 is connected to one end of the radiator water path 300, the second port 612 is connected to one end of the battery water path 200, the third port 613 is connected to one end of the heat exchange water path 240, and the fourth port 614 is connected to one end of the electric motor assembly water path 400.

The second four-way valve 620 has a fifth port 621, a sixth port 622, a seventh port 623 and an eighth port 624, the fifth port 621 is connected to the other end of the electric assembly water circuit 400, the sixth port 622 is connected to the other end of the radiator water circuit 300, the seventh port 623 is connected to the other end of the battery water circuit 200, and the eighth port 624 is connected to the other end of the heat exchange water circuit 240.

Specifically, as shown in fig. 2-4, when the valve group 600 is in the first state, the first port 611 communicates with the fourth port 614, the second port 612 communicates with the third port 613, the fifth port 621 communicates with the sixth port 622, and the seventh port 623 communicates with the eighth port 624. At this point, the electric assembly water path 400 is in series with the radiator water path 300 and the battery water path 200 is in series with the heat exchange water path 240.

The coolant in the heat exchange water path 240 flows through the water pump 950, the second port 612 and the third port 613 of the first four-way valve 610 and the battery 210, flows through the seventh port 623 and the eighth port 624 of the second four-way valve 620 to the second heat exchange path of the first heat exchanger 500, and finally flows back to the water pump 950 to be sequentially circulated. The heat pump module 100 and the heat exchange water path 240 exchange heat with the first heat exchange path through the second heat exchange path, and when the heat pump module 100 refrigerates, the heat pump module 100 indirectly cools the battery 210; when the heat pump module 100 heats, the heat pump module 100 can absorb the residual heat of the battery 210 to heat the passenger compartment.

The coolant in the radiator water circuit 300 flows into the electric assembly water circuit 400 through the first port 611 and the fourth port 614 of the first four-way valve 610, and then flows back to the radiator water circuit 300 through the sixth port 622 and the fifth port 621 of the second four-way valve 620, and circulates sequentially. At this time, the radiator water path 300 radiates heat for the electric assembly.

As shown in fig. 5-8, when the valve control group 600 is in the second state, the first port 611 communicates with the second port 612, the third port 613 communicates with the fourth port 614, the fifth port 621 communicates with the eighth port 624, and the sixth port 622 communicates with the seventh port 623. At this time, the electric assembly water passage 400 is connected in series with the heat exchange water passage 240 and the battery water passage 200 is connected in series with the radiator water passage 300.

The coolant in the radiator water path 300 flows into the battery water path 200 through the first port 611 and the second port 612 of the first four-way valve 610, and then flows back to the radiator water path 300 through the seventh port 623 and the sixth port 622 of the second four-way valve 620, and circulates in sequence. When charging is performed in a high-temperature environment, the radiator water path 300 can independently radiate heat for the battery 210, so that the heat radiation efficiency of the battery 210 can be improved, the over-high temperature of the battery 210 can be avoided, and the service life of the battery 210 can be prolonged.

When the temperature of the coolant in the electric assembly water path 400 is higher than the ambient temperature by "5 ℃, and the heat pump module 100 heats, the coolant in the electric assembly water path 400 flows through the heat exchange water path 240 and the first heat exchange path of the first heat exchanger 500 through the fourth port 614 and the third port 613 of the first four-way valve 610, and then flows back to the electric assembly water path 400 through the eighth port 624 and the fifth port 621 of the second four-way valve 620, and circulates sequentially. At this time, the heat pump module 100 can absorb the waste heat of the electric assembly through the first heat exchanger 500, thereby heating the passenger compartment.

As shown in fig. 9, when the valve control group 600 is in the third state, the first port 611 communicates with the second port 612, the third port 613 communicates with the fourth port 614, the fifth port 621 communicates with the sixth port 622, and the seventh port 623 communicates with the eighth port 624, or the first port 611 communicates with the fourth port 614, the second port 612 communicates with the third port 613, the fifth port 621 communicates with the eighth port 624, and the sixth port 622 communicates with the seventh port 623. At this time, battery water passage 200, heat exchange water passage 240, radiator water passage 300, and electric motor assembly water passage 400 are connected in series.

For example, the coolant in the battery water path 200 flows into the radiator water path 300 through the second port 612 and the first port 611 of the first four-way valve 610, flows into the electromotive assembly water path 400 through the fifth port 621 and the sixth port 622 of the second four-way valve 620, flows into the heat exchange water path 240 through the fourth port 614 and the third port 613 of the first four-way valve 610, flows back into the battery water path 200 through the eighth port 624 and the seventh port 623 of the second four-way valve 620, and circulates in this order. At this time, the battery 210 can be heated by using the waste heat of the electric assembly, so that the temperature of the battery 210 is prevented from being too low when the ambient temperature is low, and the working efficiency of the battery 210 is ensured.

It should be noted that the control valve assembly 600 may also be another kind of combination valve, such as a combination of a five-way valve and a three-way valve, and is not limited to using another combination valve to achieve the above coupling relationship.

In some embodiments of the present invention, as shown in fig. 1-9, the electric assembly water circuit 400 includes an electric control component 410, an intercooler 420, and an electric motor 430.

The motor 430 is located at the downstream of the intercooler 420 and the intercooler 410, because the intercooler 420 and the intercooler 410 belong to control devices, and the high temperature resistance of the intercooler 420 and the high temperature resistance of the intercooler 410 are weaker than the high temperature resistance of the motor 430, therefore, locating the motor 430 at the downstream of the intercooler 420 and the intercooler 420 can make the cooling liquid firstly pass through the intercooler 420 and the intercooler 410, after cooling the intercooler 420 and the intercooler 410, pass through the motor 430, further improve the cooling effect of the intercooler 420 and the intercooler 410, avoid the intercooler 420 and the intercooler 410 from being damaged due to overhigh temperature, and prolong the service life of the intercooler 420 and the intercooler 410.

The intercooler 420 is connected in parallel with the electric control module 410, the motor 430 is connected in series with the electric control module 410, or the motor 430 is connected in series with the intercooler 420.

It can be understood that there is a certain difference between the high temperature resistance of the intercooler 420 and the high temperature resistance of the electronic control component 410, and the operating temperatures of the intercooler 420 and the electronic control component 410 may be different due to different use conditions of the intercooler 420 and the electronic control component 410, and the intercooler 420 and the electronic control component 410 can be respectively temperature-controlled by the parallel arrangement, so that the temperature control is more accurate, and the intercooler 420 and the electronic control component 410 are more effectively protected.

It should be noted that the motor 430, the electronic control unit 410 and the intercooler 420 are in communication, and communication refers to communication between the cooling liquid circulation pipelines of these components, and in other embodiments of the present invention, communication of the mentioned components also refers to communication between the corresponding cooling liquid circulation pipelines of the mentioned components, so that heat exchange between multiple components can be realized by using the cooling liquid.

In some embodiments of the present invention, as shown in fig. 1 to 9, the radiator water path 300 includes a radiator 310 and a first straight branch 330, the radiator 310 is connected in parallel with the first straight branch 330, and the coolant in the radiator water path 300 can selectively flow through the radiator 310 or the first straight branch 330.

The first direct connection branch 330 is provided with a first three-way valve 320, and the first three-way valve 320 is connected to the radiator 310 and is used for controlling whether liquid in the radiator water path 300 flows through the radiator 310.

For example, the first three-way valve 320 may have one water inlet and two water outlets, the first three-way valve 320 may be disposed between the radiator 310 and the first valve port 611 of the first four-way valve 610, the water inlet of the first three-way valve 320 is connected to the first valve port 611, one of the water outlets of the first three-way valve 320 is connected to one end of the radiator 310, and the other water outlet of the first three-way valve 320 is directly connected to the sixth valve port 622 of the second four-way valve 620.

When the radiator 310 is not required to work, as shown in fig. 9, for example, the control valve set 600 is in the third state, that is, when the battery 210 is heated by using the residual heat of the motor 430 and the electronic control component 410 alone, the water outlet of the first three-way valve 320 connected to the radiator 310 may be closed, and the water outlet of the first three-way valve 320 connected to the sixth valve port 622 is opened, so that the coolant in the radiator water path 300 does not flow through the radiator 310, the residual heat of the motor 430 and the electronic control component 410 is not dissipated by the radiator 310, the residual heat of the motor 430 and the electronic control component 410 is more fully used for heating the battery 210, and the energy utilization rate is further improved.

In some embodiments of the present invention, as shown in fig. 1 to 9, the battery water path 200 includes a battery 210 and a second direct branch 240, the battery 210 is connected in parallel with the second direct branch 240, and the cooling fluid in the battery water path 200 can selectively flow through the battery 210 or the second direct branch 240.

The second direct connection branch 240 is provided with a second three-way valve 220, and the second three-way valve 220 is connected to the battery 210 and is used for controlling whether the liquid in the battery water path 200 flows through the battery 210.

For example, the second three-way valve 220 may also have a water inlet and two water outlets, the second three-way valve 220 may be disposed between the battery 210 and the seventh valve port 623 of the second four-way valve 620, the water inlet of the second three-way valve 220 is connected to the seventh valve port 623, one of the water outlets of the second three-way valve 220 is connected to one end of the battery 210, and the other water outlet of the second three-way valve 220 is connected to the second valve port 612 of the first four-way valve 610.

When the battery 210 does not need to be heated, for example, when the control valve group 600 is in the third state, and only needs to heat or cool the electric assembly, the water outlet of the second three-way valve 220 connected to the battery 210 may be closed, and the water outlet of the second three-way valve 220 connected to the second valve port 612 of the first four-way valve 610 may be opened, so that only the electric assembly is subjected to heat exchange, the heat exchange effect is better, and the heating or cooling rate is faster.

Further, as shown in fig. 1, the battery waterway 200 includes a heater 230, the heater 230 is connected to the battery 210, the heater 230 may be disposed between the battery 210 and the first four-way valve 610, and the heater 230 may not only heat the battery 210, but also heat the motor 430 and the electronic control assembly 410.

When the control valve set 600 is in the first state and the heat pump module 100 heats, if the residual heat of the battery 210 is insufficient, the heater 230 may be turned on to assist the heat pump module 100 in providing heat.

Or, when the battery 210 needs to be heated, for example, when a gun is plugged for charging, the control valve set 600 is in the first state, the heater 230 may be turned on to heat the battery 210, and the heat pump module 100 may not need to be started, so that the energy consumption is low and the safety is high.

Or, when both the battery 210 and the electric assembly need to be heated, and the control valve set 600 is in the third state, the first three-way valve 320 may be controlled to prevent the coolant in the radiator water path 300 from flowing through the radiator 310, the heater 230 may be turned on to heat the battery 210 and the electric assembly, and the second three-way valve 220 may be controlled to prevent the coolant in the battery water path 200 from flowing through the battery 210, so that the heater 230 alone heats the electric assembly.

Further, the heater 230 is a PTC (Positive Temperature Coefficient thermistor) or a tail gas heat exchanger.

When the PTC is used as the heater 230, the access voltage of the PTC can be adjusted according to the required heating amount, and the larger the voltage is, the larger the heating amount of the heater 230 is, so that the temperature of the battery 210 and the temperature of the electric assembly can be increased in an auxiliary manner when the external environment is cold, and heat can be supplied to the heat pump module 100, and the adjustment is convenient;

when the tail gas heat exchanger is adopted as the heater 230, the tail gas heat exchanger can realize heat exchange between tail gas and the battery water channel 200, when the heating amount is large, the flow rate of waste gas recovery can be increased, when the heating amount is small, the flow rate of waste gas recovery can be correspondingly reduced, the heating temperature is further controlled, the tail gas of the engine 710 can be recycled, the energy utilization rate is further improved, and the energy consumption is reduced.

It should be noted that the tail gas heat exchanger and the PTC may be disposed at the same time, and at this time, the tail gas heat exchanger and the PTC may be connected in parallel to improve the applicability.

In some embodiments of the present invention, as shown in fig. 1-10, the heat pump module 100 includes a compressor 110, an overboard heat exchanger 130, a gas-liquid separator 140, and at least one under-cabin evaporator 150.

One end of the third heat exchange path is connected with one end of the compressor 110, one end of the outdoor heat exchanger 130 is selectively connected or disconnected with the other end of the third heat exchange path through a refrigeration front branch 131, the other end of the outdoor heat exchanger 130 is selectively connected or disconnected with the other end of the third heat exchange path through a heating front branch 133, one end of the indoor evaporator 150 is selectively connected or disconnected with the other end of the outdoor heat exchanger 130 through a refrigeration rear branch 136, the gas-liquid separator 140 is connected between the other end of the compressor 110 and the other end of the indoor evaporator 150, and one end of the outdoor heat exchanger 130 is selectively connected or disconnected with the other end of the compressor 110 through a heating rear branch 136 and the gas-liquid separator 140.

Or, one end of the outdoor heat exchanger 130, one end of the front cooling branch 131 and one end of the front heating branch 133 are connected, the other end of the outdoor heat exchanger 130, one end of the rear cooling branch 132 and one end of the rear heating branch 136 are connected, the other end of the front cooling branch 131 is connected to one end of the compressor 110, the other end of the front cooling branch 131 may be directly connected to one end of the compressor 110, or indirectly connected to one end of the compressor 110 through the inactive second heat exchanger 510, the other end of the rear cooling branch 132 is connected to one end of the indoor evaporator 150, the other end of the front heating branch 133 is connected to the other end of the third heat exchange path, and the other end of the rear heating branch 136 is connected to one end of the gas-liquid separator 140.

One end of the first heat exchange path is selectively connected or disconnected with the other end of the third heat exchange path through the heating front branch 133, the one end of the first heat exchange path is selectively connected or disconnected with the other end of the outdoor heat exchanger 130 through the cooling rear branch 132, and the other end of the first heat exchange path is connected with the other end of the compressor 110 through the gas-liquid separator 140. For example, as shown in fig. 2, when the heat pump module 100 performs refrigeration, the refrigerant of the heat pump module 100 may flow from the compressor 110 into the third heat exchange path, and flow into the refrigeration front branch 131 through the third heat exchange path and then flow into the outdoor heat exchanger 130, the first check valve 900 allows the refrigerant to flow from the outdoor heat exchanger 130 to the first flow path 141, and after heat is released by the outdoor heat exchanger 130, the refrigerant flows through the gas-liquid separator 140, the in-cabin evaporator 150, and the gas-liquid separator 140 in sequence and then flows back to the compressor 110, and circulates in sequence.

When the heat pump module 100 is used for cooling, the second heat exchanger 510 does not work or is only used for dehumidification, the warm air water path 700 does not exchange heat with the heat pump module 100 through the second heat exchanger 510, but does not heat the passenger compartment, and at this time, the extravehicular heat exchanger 130 serves as a condenser.

When the heat pump module 100 heats, as shown in fig. 3, fig. 6, and fig. 7, the refrigerant of the heat pump module 100 may flow into the third heat exchange passage from the compressor 110, and flow into the heating front branch 133 through the third heat exchange passage, and then flow into the gas-liquid separator 140 and the outdoor heat exchanger 130, at this time, the outdoor heat exchanger 130 functions as an evaporator, the outdoor heat exchanger 130 absorbs heat outside the vehicle to provide heat for the heat pump module 100 to heat, and the refrigerant flows through the outdoor heat exchanger 130, then flows through the heating rear branch 136 and the gas-liquid separator 140, and flows back to the compressor 110, and circulates sequentially. At this time, the warm air water path 700 may exchange heat with the heat pump module 100 through the second heat exchanger 510.

Or, when the heat pump module 100 heats, the refrigerant of the heat pump module 100 may flow through the third heat exchange passage by the compressor 110, flow into the heating front branch 133 through the third heat exchange passage, and then flow to the gas-liquid separator 140, flow to the first heat exchanger 500 after flowing out of the gas-liquid separator 140, at this time, the first heat exchanger 500 functions as an evaporator, may absorb heat of the heat exchange water path 240, and provide heat for the heat pump module 100 by using the heat of the heat exchange water path 240 to heat, and the refrigerant flows back to the compressor 110 through the gas-liquid separator 140, and circulates sequentially.

Optionally, the first two-way valve 800 is disposed on the refrigeration front branch 131, the first check valve 900 and the second two-way valve 820 are disposed on the refrigeration rear branch 132, and the first check valve 900 allows the refrigerant of the outdoor heat exchanger 130 to flow to the indoor evaporator 150 and prevents the refrigerant of the indoor evaporator 150 from flowing to the outdoor heat exchanger 130.

The heating front branch 133 is provided with a third two-way valve 230, a first electromagnetic expansion valve 920 and a second one-way valve 910, the second one-way valve 910 allows the refrigerant of the cabin interior evaporator 150 to flow to the cabin exterior heat exchanger 130 and prevents the refrigerant of the cabin exterior heat exchanger 130 from flowing to the cabin interior evaporator 150, the heating rear branch 136 is provided with a fourth two-way valve 830, and one end of the first heat exchange passage is connected to the heating front branch 133 and the cooling rear branch 132 through a second electromagnetic expansion valve 930.

The gas-liquid separator 140 includes a first flow path 141 and a second flow path 142, one end of the first flow path 141 is connected to the first check valve 900 and one end of the first stage 134, the other end of the first flow path 141 is connected to the second two-way valve 820, and one end of the second electromagnetic expansion valve 930 and one end of the second stage 135 are connected to each other, one end of the second flow path 142 is connected to the other end of the in-cabin evaporator 150, the heated branch 136, and the other end of the first heat exchange path, and the other end of the second flow path 142 is connected to the other end of the compressor 110.

Specifically, when the heat pump module 100 is used for cooling, the refrigerant of the heat pump module 100 may flow into the third heat exchange path from the compressor 110, at this time, the first two-way valve 800 is opened, the third two-way valve 810 and the fourth two-way valve 830 are closed, the refrigerant flows to the outdoor heat exchanger 130 through the third heat exchange path, the first check valve 900 allows the refrigerant to flow from the outdoor heat exchanger 130 to the first flow path 141, the first check valve 900 prevents the refrigerant from flowing from the first flow path 141 to the outdoor heat exchanger 130, the refrigerant flows to the first flow path 141, the second two-way valve 820 is opened, and the refrigerant flows back to the compressor 110 through the indoor evaporator 150 and the second flow path 142 and circulates sequentially.

When the heat pump module 100 is used for cooling, if the second electromagnetic expansion valve 930 is closed, the cooling capacity of the heat pump module 100 is completely used for cooling the passenger compartment; if the second electromagnetic expansion valve 930 is opened, the refrigerant of the heat pump module 100 exchanges heat with the heat exchange water channel 240 through the first heat exchanger 500, that is, part of the cooling capacity of the heat pump module 100 is used for cooling the passenger compartment, and the rest of the cooling capacity of the heat pump module 100 is used for cooling at least one of the battery 210 and the electric assembly.

When the heat pump module 100 heats, as shown in fig. 3, 6, and 7, the refrigerant of the heat pump module 100 may flow from the compressor 110 into the third heat exchange path, at this time, the first two-way valve 800 is closed, the third two-way valve 810 and the fourth two-way valve 830 are opened, the refrigerant flows to the first flow path 141 through the third heat exchange path, the second two-way valve 820 is closed, the second check valve 910 allows the refrigerant to flow from the first flow path 141 to the outdoor heat exchanger 130, the second check valve 910 prevents the refrigerant from flowing from the outdoor heat exchanger 130 to the first flow path 141, and the refrigerant flows to the outdoor heat exchanger 130 and the second flow path 142 and flows back to the compressor 110, and circulates sequentially.

Or, when the heat pump module 100 heats, the refrigerant of the heat pump module 100 may flow through the third heat exchange passage by the compressor 110, at this time, the first two-way valve 800 and the fourth two-way valve 830 are closed, the third two-way valve 810 is opened, the refrigerant flows to the first flow path 141 through the third heat exchange passage, the second two-way valve 820 and the first electromagnetic expansion valve 920 are closed, the second electromagnetic expansion valve 930 is opened, the refrigerant flows to the first heat exchanger 500, and the refrigerant flows back to the compressor 110 through the second flow path 142 and circulates sequentially.

When the heat pump module 100 heats, if the second electromagnetic expansion valve 930 is closed, the heating amount of the heat pump module 100 is completely used for heating the passenger compartment; if the second electromagnetic expansion valve 930 is opened, the refrigerant of the heat pump module 100 exchanges heat with the heat exchange water channel 240 through the first heat exchanger 500, that is, part of the heating capacity of the heat pump module 100 is used for cooling the passenger compartment, and the rest of the heating capacity of the heat pump module 100 is used for heating at least one of the battery 210 and the electric assembly.

According to some embodiments of the present invention, as shown in fig. 10, the heating front branch 133 includes a first section 134 and a second section 135, one end of the first section 134 is connected to one end of the third heat exchange path, the other end of the first section 134 is connected to the first check valve 900, the second two-way valve 820, and the second electromagnetic expansion valve 930, respectively, one end of the second section 135 is connected to the other end of the first section 134, and the other end of the second section 135 is connected to the other end of the outdoor heat exchanger 130. Wherein the third two-way valve 810 is disposed on the first section 134, and the first electromagnetic expansion valve 920 and the second one-way valve 910 are disposed on the second section 135.

In this way, the other end of the refrigeration back branch 136, the other end of the first section 134, the other end of the in-cabin evaporator 150, one end of the first heat exchange passage, and one end of the second section 135 are connected together, and different modes can be realized by a plurality of valve bodies such as the first check valve 900, the second check valve 910, the second two-way valve 820, the third two-way valve 810, the first electromagnetic expansion valve 920, and the second electromagnetic expansion valve 930, and the integration level is higher.

The gas-liquid separator 140 includes a first flow path 141 and a second flow path 142, one end of the first flow path 141 is connected to one ends of the first check valve 900 and the first section 134, the other end of the first flow path 141 is connected to the second two-way valve 820, the second electromagnetic expansion valve 930 is connected to one end of the second section 135, one end of the second flow path 142 is connected to the other end of the in-cabin evaporator 150, the heated branch 136, and the other end of the first heat exchange path, and the other end of the second flow path 142 is connected to the other end of the compressor 110.

The first flow path 141 of the gas-liquid separator 140 may be a high-pressure flow path, the second flow path 142 may be a low-pressure flow path, and the first flow path 141 and the second flow path 142 of the gas-liquid separator 140 may exchange heat to separate the refrigerant flowing through the second flow path 142 into gas and liquid, thereby improving cooling and heating efficiencies of the heat pump module 100 and protecting the compressor 110.

It should be noted that the first electromagnetic expansion valve 920 may control the flow rate of the refrigerant between the first flow path 141 and the in-cabin evaporator 150, wherein the first electromagnetic expansion valve 920 may be completely closed to open the circuit between the first flow path 141 and the in-cabin evaporator 150, and the first electromagnetic expansion valve 920 may be replaced by a combination of an expansion valve and a two-way valve.

The second electromagnetic expansion valve 930 may control a flow rate of the refrigerant between the first flow path 141 and the first heat exchange path, wherein the second electromagnetic expansion valve 930 may be completely closed to open the first flow path 141 and the first heat exchange path, and the second electromagnetic expansion valve 930 may be replaced by a combination of an expansion valve and a two-way valve.

Further, as shown in fig. 1 to 9, the plurality of in-cabin evaporators 150 is plural, and the plurality of in-cabin evaporators 150 includes a first in-cabin evaporator 151 and a second in-cabin evaporator 152. In this manner, the plurality of in-cabin evaporators 150 can increase the cooling effect on the passenger cabin, thereby rapidly reducing the temperature of the passenger cabin, for example, the first in-cabin evaporator 151 and the second in-cabin evaporator 152 can be disposed at different positions of the vehicle, so that the first in-cabin evaporator 151 and the second in-cabin evaporator 152 can rapidly transfer the cooling energy to various portions of the passenger cabin.

Specifically, one end of the first in-cabin evaporator 151 is connected to the second two-way valve 820 through one expansion valve 940, the other end of the first in-cabin evaporator 151 is connected to the fourth two-way valve 830 and the other end of the second flow path 142, respectively, one end of the second in-cabin evaporator 152 is connected to the second two-way valve 820 through another expansion valve 940, and the other end of the second in-cabin evaporator 152 is connected to the fourth two-way valve 830 and the other end of the second flow path 142, respectively. Wherein, the first cabin evaporator 151 and the second cabin evaporator 152 are connected in parallel.

In some embodiments of the present invention, as shown in fig. 1-9, the warm air water circuit 700 includes an engine 710, a warm air system 730, and a third three-way valve 740.

The engine 710 and the fourth heat exchange path are connected in parallel and then connected in series with the warm air system 730, and the coolant in the warm air water path 700 can selectively flow through at least one of the engine 710 and the fourth heat exchange path. The third three-way valve 740 is connected to the warm air system 730, the engine 710, and the fourth heat exchange path, respectively, and the third three-way valve 740 is used to control the liquid in the warm air water path 700 to flow through at least one of the engine 710 and the fourth heat exchange path. Wherein, the warm air waterway 700 may be provided with a water tank for storing water. And, the third three-way valve 740 may cut off the warm air water path 700, so as to prevent heat of the warm air water path 700 from being transferred to the battery 210 or the electric assembly when the ambient temperature is high, and prevent the warm air water path 700 from exchanging heat with the heat pump module 100.

Thus, when the ambient temperature is low, the heater system 730 can provide warm air for the passenger compartment to increase the temperature of the passenger compartment, specifically, the third three-way valve 740 is in an open state, and at this time, the vehicle can heat the passenger compartment together with the heater system 730 by using the waste heat of the engine 710, so as to improve the riding comfort, or the third three-way valve 740 can cut off the communication of the engine 710, and the coolant directly flows to the fourth heat exchange path through the heater system 730, so that the heat loss of the heater system 730 can be reduced, and the heater system 730 can directly heat the passenger compartment.

Further, as shown, the heater system 730 includes a front heater 731 and a rear heater 732, and specifically, the front heater 731 and the rear heater 732 can be disposed at different positions of the vehicle, for example, the front heater 731 is disposed at the front end of the vehicle, and the rear heater 732 is disposed at the rear end of the vehicle, so that the front heater 731 and the rear heater 732 can rapidly transfer heat to various parts of the passenger compartment, and the heating effect is better.

In addition, the front warm air 731 and the rear warm air 732 are connected in parallel, so that the outlet air temperature of the front warm air 731 and the outlet air temperature of the rear warm air 732 can be controlled respectively, passengers can adjust the temperature of different positions of the vehicle as required, the use experience is better, and when one of the front warm air 731 and the rear warm air 732 breaks down, the other warm air still can work normally, so that the warm air system 730 can be prevented from being completely closed.

In some embodiments of the present invention, as shown in fig. 1-9, the thermal management system 1 further comprises a third heat exchanger 720 having a fifth heat exchange path and a sixth heat exchange path, the fifth heat exchange path is connected to the heat exchange waterway, and the sixth heat exchange path is connected in series with the warm air waterway 700. Wherein, the third heat exchanger 720 may be a plate heat exchanger.

Specifically, the coolant of the heat exchange water path 240 may flow through a fifth heat exchange path, the coolant of the warm air water path 700 may flow through a sixth heat exchange path, the fifth heat exchange path and the sixth heat exchange path are not communicated, and the coolant in the fifth heat exchange path and the coolant in the sixth heat exchange path may exchange heat.

So, when the temperature of the coolant in warm braw water route 700 > the temperature of the coolant in electric assembly water route 400 > ambient temperature, valve unit 600 is in the first state this moment, the coolant in warm braw water route 700 and the coolant in heat transfer water route 240 can exchange through third heat exchanger 720, heat transfer water route 240 can absorb the waste heat of engine 710 through third heat exchanger 720, rethread first heat exchanger 500 provides heat for heat pump module 100, thereby realized heating in the passenger cabin, further reduced the energy consumption.

Or, when the vehicle is started in a cold environment, the temperature of the coolant in the battery water path 200 and the ambient temperature are both less than-5 ℃, the heat pump module 100 may not operate, the control valve group 600 is in the first state at this time, the coolant in the warm air water path 700 and the coolant in the heat exchange water path 240 may exchange with each other through the third heat exchanger 720, the heat exchange water path 240 may absorb the waste heat of the engine 710 through the third heat exchanger 720, and then provide heat for the battery 210, so that the vehicle may be started in a pure electric mode.

Or when the control valve group 600 is in the third state, the second three-way valve 220 may control the coolant in the battery water path 200 not to flow through the battery 210, at this time, the coolant in the warm air water path 700 and the coolant in the heat exchange water path 240 may exchange with each other through the third heat exchanger 720, and the heat exchange water path 240 may absorb the waste heat of the engine 710 through the third heat exchanger 720, and then provide heat for the electric assembly, thereby ensuring the working efficiency of the electric assembly.

A vehicle according to an embodiment of the present invention, which includes the thermal management system 1 according to the above-described embodiment of the present invention, is described below with reference to the drawings. The vehicle may be an electric vehicle or a hybrid vehicle.

According to the vehicle provided by the embodiment of the invention, by utilizing the thermal management system 1 provided by the embodiment of the invention, the waste heat of the battery 210, the electric assembly and the engine 710 can be fully utilized, and the battery and the electric assembly can be heated or cooled under various working conditions, so that the vehicle has the advantages of high energy utilization rate, high integration level and the like.

Other constructions and operations of the thermal management system 1 and the vehicle having the same according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein. In the description herein, references to the description of "a particular embodiment," "a particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system, comprising:

the system comprises a heat pump module, a battery waterway, a heat exchange waterway, a radiator waterway, an electric assembly waterway and a warm air waterway;

the first heat exchanger is provided with a first heat exchange passage and a second heat exchange passage, the first heat exchange passage is communicated with the heat pump module, and the second heat exchange passage is communicated with the heat exchange waterway;

the second heat exchanger is provided with a third heat exchange passage and a fourth heat exchange passage, the third heat exchange passage is connected with the heat pump module, and the fourth heat exchange passage is connected with the warm air waterway;

the control valve group can be switched among a first state, a second state and a third state and is respectively connected with the battery waterway, the heat exchange waterway, the radiator waterway and the electric assembly waterway;

when the control valve group is in the first state, the electric assembly water path is communicated with the radiator water path in series, and/or the battery water path is communicated with the heat exchange water path in series;

when the control valve group is in the second state, the electric assembly water path is communicated with the heat exchange water path in series, and/or the battery water path is communicated with the radiator water path in series;

when the control valve group is in the third state, the battery water path, the heat exchange water path, the radiator water path and the electric assembly water path are communicated in series.

2. The thermal management system of claim 1, wherein the set of control valves comprises:

the first four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with one end of the radiator water channel, the second valve port is connected with one end of the battery water channel, the third valve port is connected with one end of the heat exchange water channel, and the fourth valve port is connected with one end of the electric assembly water channel;

the second four-way valve is provided with a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port, the fifth valve port is connected with the other end of the electric assembly water channel, the sixth valve port is connected with the other end of the radiator water channel, the seventh valve port is connected with the other end of the battery water channel, and the eighth valve port is connected with the other end of the heat exchange water channel;

when the control valve group is in the first state, the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port;

when the control valve group is in the second state, the first valve port is communicated with the second valve port, the third valve port is communicated with the fourth valve port, the fifth valve port is communicated with the eighth valve port, and the sixth valve port is communicated with the seventh valve port;

when the control valve group is in the third state, the first valve port is communicated with the second valve port, the third valve port is communicated with the fourth valve port, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port, or the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, the fifth valve port is communicated with the eighth valve port, and the sixth valve port is communicated with the seventh valve port.

3. The thermal management system of claim 1, wherein the electric assembly water circuit comprises:

an electronic control assembly;

the intercooler is connected with the electric control assembly in parallel;

the motor, the motor with automatically controlled subassembly is established ties just the motor is located the low reaches of automatically controlled subassembly, or the motor with the intercooler is established ties just the motor is located the low reaches of intercooler.

4. The thermal management system of claim 1, wherein the heat sink water circuit comprises:

the radiator is connected with the first straight connecting branch in parallel, and cooling liquid in a radiator water path can selectively flow through the radiator or the first straight connecting branch.

5. The thermal management system of claim 1, wherein the battery water circuit comprises:

the battery is connected with the second direct connection branch in parallel, and cooling liquid in the battery water channel can selectively flow through the battery or the second direct connection branch.

6. The thermal management system of claim 5, wherein the battery water circuit comprises:

a heater connected to the battery.

7. The thermal management system of claim 6, wherein the heater is a PTC or tail gas heat exchanger.

8. The thermal management system of claim 1, wherein the heat pump module comprises:

one end of the third heat exchange passage is connected with one end of the compressor;

one end of the outdoor heat exchanger is selectively connected or disconnected with the other end of the third heat exchange passage through a refrigeration front branch, and the other end of the outdoor heat exchanger is selectively connected or disconnected with the other end of the third heat exchange passage through a heating front branch;

one end of the in-cabin evaporator is selectively connected or disconnected with the other end of the out-cabin heat exchanger through a refrigeration back branch;

the gas-liquid separator is connected between the other end of the compressor and the other end of the in-cabin evaporator, and the one end of the out-of-cabin heat exchanger can be selectively connected or disconnected with the other end of the compressor through a heating back branch and the gas-liquid separator;

one end of the first heat exchange passage is selectively connected or disconnected with the other end of the third heat exchange passage through the heating front branch, the one end of the first heat exchange passage is selectively connected or disconnected with the other end of the outdoor heat exchanger through the refrigeration rear branch, and the other end of the first heat exchange passage is connected with the other end of the compressor through the gas-liquid separator.

9. The thermal management system according to claim 8, wherein the plurality of in-cabin evaporators include a first in-cabin evaporator and a second in-cabin evaporator, one end of the first in-cabin evaporator is connected to the refrigeration rear branch line through an expansion valve, the other end of the first in-cabin evaporator is connected to the gas-liquid separator, one end of the second in-cabin evaporator is connected to the refrigeration rear branch line through another expansion valve, and the other end of the second in-cabin evaporator is connected to the gas-liquid separator.

10. The thermal management system of claim 8,

a first two-way valve is arranged on the refrigeration front pipeline;

a first check valve and a second two-way valve are arranged on the refrigeration rear branch passage, and the first check valve allows the refrigerant of the outdoor heat exchanger to flow to the indoor evaporator and prevents the refrigerant of the indoor evaporator from flowing to the outdoor heat exchanger;

a third two-way valve, a first electromagnetic expansion valve and a second one-way valve are arranged on the heating front pipeline, and the second one-way valve allows the refrigerant of the cabin evaporator to flow to the outdoor heat exchanger and prevents the refrigerant of the outdoor heat exchanger from flowing to the cabin evaporator;

a fourth two-way valve is arranged on the heating rear branch circuit;

and one end of the first heat exchange passage is connected with the heating front branch and the refrigerating rear branch through a second electromagnetic expansion valve.

11. The thermal management system of claim 10, wherein the pre-heat path comprises:

one end of the first section is connected with the other end of the third heat exchange passage, and the other end of the first section is respectively connected with the first one-way valve, the second two-way valve and the second electromagnetic expansion valve;

one end of the second section is connected with the other end of the first section, and the other end of the second section is connected with the other end of the extravehicular heat exchanger;

wherein the third two-way valve is disposed on the first segment, and the first electromagnetic expansion valve and the second one-way valve are disposed on the second segment.

12. The thermal management system of claim 11, wherein the gas-liquid separator comprises:

a first flow path, one end of which is connected to the first check valve and the one end of the first stage, and the other end of which is connected to the second two-way valve, the second electromagnetic expansion valve, and the one end of the second stage;

and one end of the second flow path is connected with the other end of the under-cabin evaporator, the heating back branch and the other end of the first heat exchange path, and the other end of the second flow path is connected with the other end of the compressor.

13. The thermal management system of claim 1, wherein the warm air water circuit comprises:

an engine;

the engine and the fourth heat exchange channel are connected in parallel and then connected in series with the warm air system, and the cooling liquid in the warm air water path can selectively flow through at least one of the engine and the fourth heat exchange channel.

14. The thermal management system of claim 1, wherein a warm air system is arranged on the warm air waterway, the warm air system comprises a front warm air and a rear warm air, and the front warm air and the rear warm air are connected in parallel.

15. The thermal management system of claim 1, further comprising:

the third heat exchanger is provided with a fifth heat exchange channel and a sixth heat exchange channel, the fifth heat exchange channel is connected with the heat exchange water channel, and the sixth heat exchange channel is connected with the warm air water channel in series.

16. A vehicle comprising a thermal management system according to any of claims 1-12.