CN111854208B

CN111854208B - Thermal management system

Info

Publication number: CN111854208B
Application number: CN201910576568.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Priority date: 2019-04-29
Filing date: 2019-06-28
Publication date: 2021-12-14
Anticipated expiration: 2039-06-28
Also published as: CN111854208A

Abstract

The invention discloses a heat management system, which comprises a refrigerant system and a cooling liquid system, and further comprises a second heat exchanger and a first double-runner heat exchanger, wherein a branch where the second heat exchanger is located and a branch where the first double-runner heat exchanger is located are arranged in parallel or communicated in series, and the refrigerant system and the cooling liquid system can exchange heat through the first double-runner heat exchanger.

Description

Thermal management system

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of thermal management systems.

[ background of the invention ]

Generally, how a thermal management system can regulate and control the temperature in a certain area, such as a room or a car interior, to utilize peripheral heat sources of the thermal management system to improve the heating capacity of the thermal management system is a technical problem to be solved.

[ summary of the invention ]

The invention aims to provide a thermal management system which is beneficial to improving the heating capacity of the thermal management system.

A thermal management system comprising a refrigerant system and a coolant system, the refrigerant of the refrigerant system being isolated from circulation by a coolant of the coolant system; the heat management system comprises a refrigerant system, a heat exchange module and a heat exchange module, wherein the refrigerant system comprises a compressor, a first heat exchanger and a first valve device, an outlet of the compressor can be communicated with the first valve device through the first heat exchanger, the heat exchange module comprises a second heat exchanger and a first dual-flow-channel heat exchanger, and a branch where a first flow channel of the first dual-flow-channel heat exchanger is located is serially communicated with or parallelly arranged with a branch where the second heat exchanger is located; the first heat exchanger can be communicated with the second port of the heat exchange module through the first valve device, and the first heat exchanger can also be communicated with the first port of the heat exchange module through the first valve device;

the coolant system comprises a first coolant system comprising the second flow passage of the first dual-flow passage heat exchanger, and the first coolant system and the refrigerant system are capable of exchanging heat at the first dual-flow passage heat exchanger.

The heat management system comprises a second heat exchanger and a first heat exchange double-flow-channel heat exchanger, a branch where the first double-flow-channel heat exchanger is located and a branch where the second heat exchanger is located are arranged in series or in parallel, a first cooling liquid system and a refrigerant system can exchange heat in the first double-flow-channel heat exchanger, and the heat management system can obtain heat through the first cooling liquid system, so that the heating capacity of the heat management system is improved.

[ description of the drawings ]

FIG. 1 is a schematic connection diagram of a first embodiment of a thermal management system;

FIG. 2 is a schematic connection diagram of a second embodiment of a thermal management system;

FIG. 3 is a schematic connection diagram of a third embodiment of a thermal management system;

FIG. 4 is a schematic connection diagram of a fourth embodiment of a thermal management system;

FIG. 5 is a schematic view of a first multi-way reversing device of the thermal management system;

FIG. 6 is a schematic view of a second multi-way reversing device of the thermal management system;

FIG. 7 is a schematic view of a four-way water valve in a first operating state;

FIG. 8 is a schematic view of a four-way water valve in a second operating state;

FIG. 9 is a schematic connection diagram of a fifth embodiment of a thermal management system;

fig. 10 is a schematic view of the connection of a first dual-channel heat exchanger and a second heat exchanger arranged in parallel.

[ detailed description ] embodiments

The thermal management system in the technical scheme of the invention can be applied to various modes, some of which can be applied to a vehicle thermal management system and can also be applied to other thermal management systems such as a household thermal management system or a commercial thermal management system, and a specific vehicle thermal management system is taken as an example and is described with reference to the attached drawings.

The thermal management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system are isolated from circulation. Referring to the embodiment disclosed in fig. 1 and 2, the refrigerant system includes a compressor 10, a first throttling device 205, a second throttling device 204, a first heat exchanger 101, a second heat exchanger 103, and a first valve device, and an outlet of the compressor 10 can communicate with the first valve device through the first heat exchanger 101; the thermal management system further comprises a heat exchange module, the heat exchange module has two ports, namely a first port 100 of the heat exchange module and a second port 200 of the heat exchange module, the heat exchange module includes a second heat exchanger 103 and a first dual-channel heat exchanger 108, the first dual-channel heat exchanger 108 includes a first channel and a second channel, the first channel of the first dual-channel heat exchanger 108 and the second channel of the first dual-channel heat exchanger 108 are isolated from each other and are not communicated with each other, the first channel of the first dual-channel heat exchanger 108 is a part of a refrigerant circulation channel, the second channel of the first dual-channel heat exchanger is a part of a coolant circulation channel, and refrigerant flowing through the first channel of the first dual-channel heat exchanger 108 and coolant flowing through the second channel of the first dual-channel heat exchanger 108 can exchange heat in the first dual-channel heat exchanger 108.

In this embodiment, the branch of the first dual-channel heat exchanger 108 in which the first channel is located is in series communication with the branch of the second heat exchanger 103, where the series communication: in the flow direction of the refrigerant, the front and back sequence of the branch where the first flow channel is located and the branch where the second heat exchanger is located is not limited. Specifically, the first flow channel of the first dual-flow-channel heat exchanger 108 and the second heat exchanger 103 both include two ports, the first port of the first flow channel of the first dual-flow-channel heat exchanger 108 is communicated with the first port 100 of the heat exchange module, the second port of the second heat exchanger 103 is communicated with the second port 200 of the heat exchange module, and the second port of the first flow channel of the first dual-flow-channel heat exchanger 108 is communicated with the first port of the second heat exchanger 103. In practical application, the refrigerant in the thermal management system runs in a relatively closed space, and the port of the heat exchange module is set for convenience in description of connection relationship. In other embodiments, the second port of the first channel of the first dual-channel heat exchanger 108 is in communication with the second port 200 of the heat exchange module, the first port of the second heat exchanger 103 is in communication with the first port 100 of the heat exchange module, and the first port of the first channel of the first dual-channel heat exchanger 108 is in communication with the second port of the second heat exchanger. The first throttling device 205 is communicated with the second port 200 of the heat exchange module, the refrigerant inlet of the first heat exchanger 101 is communicated with the outlet of the compressor 10, the refrigerant outlet of the first heat exchanger 101 is communicated with the first valve device, the refrigerant outlet of the first heat exchanger 101 can be communicated with the first throttling device 205 and the second throttling device 204 through the first valve device, and the first port 100 of the corresponding heat exchange module can be communicated with the suction port of the compressor through the first valve device or communicated with the inlet of the compressor 10 through the gas-liquid separator 207; in one mode of operation of the thermal management system, the refrigerant outlet of the first heat exchanger 101 can be in communication with the second port 200 of the heat exchange module via the first valve arrangement, and in another mode of operation of the thermal management system, the refrigerant outlet of the first heat exchanger 101 can be in communication with the first port 100 of the heat exchange module via the first valve arrangement; the first valve device may be a first multi-way reversing device 201, and may also include a second multi-way reversing device 201' and a first valve member 209, which will be described in detail later. It can be known that the branch where the first flow channel of the first dual-flow-channel heat exchanger 108 is located and the branch where the second heat exchanger 103 is located may also be arranged in parallel, please refer to fig. 10, the first port of the second heat exchanger 103 and the first port of the first flow channel of the first dual-flow-channel heat exchanger 108 are both communicated with the first port 100 of the heat exchange module, and the second port of the second heat exchanger and the second port of the first flow channel of the first dual-flow-channel heat exchanger are both communicated with the second port 200 of the heat exchange module.

The heat management system further comprises a second dual-flow-channel heat exchanger 104, the second dual-flow-channel heat exchanger 104 comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel of the second dual-flow-channel heat exchanger 104 are isolated from each other and are not communicated, the first flow channel of the second dual-flow-channel heat exchanger 104 is a part of a refrigerant circulation channel, the second flow channel of the second dual-flow-channel heat exchanger 104 is a part of a cooling liquid circulation channel, refrigerant flowing through the first flow channel of the second dual-flow-channel heat exchanger and cooling liquid flowing through the second flow channel of the second dual-flow-channel heat exchanger can exchange heat in the second dual-flow-channel heat exchanger 104, an inlet of the first flow channel of the second dual-flow-channel heat exchanger 104 is communicated with a second throttling device 204, an outlet of the first flow channel of the second dual-flow-channel heat exchanger 104 is communicated with a suction port of the compressor 10 or communicated with an inlet of the compressor 10 through a gas-liquid separator 207, and a second flow channel of the second dual-flow-channel heat exchanger 104 is communicated with a third heat exchanger 105, The first pump 109 is connected in series, wherein the third heat exchanger 105 is a temperature controller of a heat generating device such as a battery, that is, the cooling liquid of the third heat exchanger 105 can exchange heat with the heat generating device such as the battery to control the temperature of the heat generating device such as the battery.

The refrigerant system further includes an evaporator 102 and a third throttling device 202, the third throttling device 202 is disposed at an inlet of the evaporator 102, and an outlet of the evaporator 102 is communicated with an inlet of the compressor 10 or communicated with an inlet of the compressor 10 via a gas-liquid separator 207. The coolant system includes first coolant system and second coolant system, and wherein first coolant system includes: the second flow channel of the second dual-flow-channel heat exchanger 104, the first pump 109 and the third heat exchanger 105 are communicated in series; the second coolant system includes: the second flow channel of the first dual-flow-channel heat exchanger 108, the fourth heat exchanger 502 and the second pump 503 are communicated in series, and the second flow channel of the first dual-flow-channel heat exchanger 108, the fourth heat exchanger 502 and the second pump 503 are communicated in series. In other embodiments, such as the embodiment illustrated in fig. 9, only the second coolant system may be included. The fourth heat exchanger may be a temperature controller of a heating device such as a motor, that is, the cooling liquid in the fourth heat exchanger may absorb or release heat to the heating device such as the motor.

The first coolant system may also include a heating device 106, the second flow path of the second dual-flow-path heat exchanger 104, the first pump 109, and the third heat exchanger 105 are in serial communication, the heating device 106 may provide heat for a heat generating device such as a battery, the heating device 106 may also transfer the heat to the refrigerant system through the second dual-flow-path heat exchanger 104, and finally release the heat at the first heat exchanger 101. The heating device 106 includes at least two ports, a coolant flow path connecting the two ports of the heating device 106, and a heating core capable of heating the coolant flowing through the heating device 106, and the heating device 106 may be an electric heating device or other heating devices. The second coolant system further comprises a radiator 504 and a third valve arrangement, the third valve arrangement being a first three-way valve 501, a first port of the third valve arrangement being capable of communicating with a second port of the third valve arrangement and/or with a third port of the third valve arrangement, the first three-way valve 501 comprising three ports, in particular, the first port of the first three-way valve 501 may be a first three-way valve 501 inlet, correspondingly, the second port of the first three-way valve 501 and the third port of the first three-way valve 501 are outlets of the first three-way valve 501, or the first port of the first three-way valve 501 may be a first three-way valve 501 outlet, correspondingly, the second port of the first three-way valve 501 and the third port of the first three-way valve 501 are inlets of the first three-way valve 501. Specifically, a first port of the first three-way valve 501 communicates with a second port of the fourth heat exchanger 502, a second port of the first three-way valve 501 communicates with a first port of the radiator 504, a third port of the first three-way valve 501 communicates with a first port of the second flow passage of the first two-flow-passage heat exchanger 108, a second port of the radiator 504, a second port of the second flow passage of the first two-flow-passage heat exchanger 108 communicate with an inlet of the second pump 503, and an outlet of the second pump 503 communicates with a first port of the fourth heat exchanger. Of course, the first port of the third valve arrangement may also be in communication with the inlet of the second pump 503, and correspondingly, the second port of the second flow passage of the first dual-flow passage heat exchanger 108, the second port of the radiator 504 and the second port of the fourth heat exchanger 502. The first three-way valve is arranged at the outlet or the inlet of the first cooling liquid system and the outlet and the inlet of the second pump. The third valve device may be a third valve unit (not shown) and a fourth valve unit (not shown), specifically, the first port of the radiator 504 is communicated with the first port of the second flow passage of the first dual-flow-passage heat exchanger 108 through the third valve unit, the first port of the fourth heat exchanger 502 is communicated with the first port of the second flow passage of the first dual-flow-passage heat exchanger 108 through the fourth valve unit, and the thermal management system may control whether the coolant flows into the fourth heat exchanger 502 and the radiator 504 by controlling the third valve unit and the fourth valve unit.

Referring to fig. 1, 7 and 8, the thermal management system includes a second valve device having four ports, a first port 1000 and a second port 2000 corresponding to the first coolant system, a third port 3000 and a fourth port 4000 corresponding to the second coolant system, the first port of the second valve device being communicated with the first port, the second port of the second valve device being communicated with the second port, the third port of the second valve device being communicated with the third port, and the fourth port of the second valve device being communicated with the fourth port. In a specific embodiment, the second valve device is a four-way water valve 601, wherein a first port 6011 of the four-way water valve 601 is communicated with an outlet of the second pump, an outlet of the second pump is also the first port 1000 or is communicated with the first port 1000, a second port 6012 of the four-way water valve 601 is communicated with a second port of the fourth heat exchanger 502, a second port of the fourth heat exchanger 502 is also the second port 2000 or is communicated with the second port 2000, a third port 6013 of the four-way water valve 601 is communicated with a first port of the third heat exchanger 105, a first port of the third heat exchanger 105 is also the third port 3000 or is communicated with the third port 3000, a fourth port 6014 of the four-way water valve 601 is communicated with an inlet of the first pump 109, and an inlet of the first pump 109 is also the fourth port 4000 or is communicated with the fourth port 4000. The four-way water valve 601 includes two operating states, in the first operating state of the four-way water valve 601: a first port of the four-way water valve 601 is communicated with a second port of the four-way water valve 601, and a third port of the four-way water valve 601 is communicated with a fourth port of the four-way water valve 601; in the second operating state of the four-way water valve 601: the first port of the four-way water valve 601 is communicated with the fourth port of the four-way water valve 601, and the second port of the four-way water valve 601 is communicated with the third port of the four-way water valve 601. When the thermal management system works, if the four-way water valve 601 is in a first working state, the first cooling loop and the second cooling loop respectively and independently run; if the four-way water valve 601 is in the second working state, the first cooling loop is serially communicated with the second cooling loop, that is, the cooling liquid discharged by the second pump 503 enters the first pump through the four-way water valve 601, and then the cooling liquid enters the first cooling loop, and the cooling liquid discharged by the third heat exchanger 105 returns to the second cooling liquid loop again through the four-way water valve 601. Of course, the four-way water valve 601 may be replaced by a plurality of two-way water valves or three-way water valves, which will not be described in detail.

Referring to fig. 1, the thermal management system may further include a third coolant system, in this case, the first heat exchanger 101 is a two-channel heat exchanger, that is, the first heat exchanger 101 includes a first channel and a second channel that are not communicated with each other, where the first channel of the first heat exchanger 101 is a part of a coolant channel, the second channel of the first heat exchanger 101 is a part of the third coolant system, and a coolant of the coolant system and a coolant of the third coolant system can exchange heat in the first heat exchanger 101. The third cooling liquid system comprises a third pump 403, a fifth heat exchanger 401 and a second flow channel of the first heat exchanger, and the third pump 403, the fifth heat exchanger 401 and the second flow channel of the first heat exchanger 101 are communicated in series; in other embodiments, the third coolant system further includes a heating device 402, the third pump 403, the fifth heat exchanger 401 and the second flow path of the first heat exchanger 101 are in serial communication, and the third coolant system is provided with the heating device 403, so that heat can be supplemented to the thermal management system when heating is insufficient, and comfort is improved. In other embodiments, the thermal management system may further include a fourth cooling fluid system, the evaporator 102 includes a first flow channel and a second flow channel, the first flow channel of the evaporator 102 is a refrigerant flow channel, and the second flow channel of the evaporator 102 is a cooling fluid flow channel; the fourth cooling liquid system comprises a fourth pump and a sixth heat exchanger, and the second flow channel of the evaporator, the fourth pump and the sixth heat exchanger are communicated in series.

Referring to fig. 6 and 5, the first valve device includes at least a first communication port communicating with the refrigerant outlet of the first heat exchanger 101, a second communication port communicating with the suction port of the compressor 10, a third communication port communicating with the first throttling device 205, the second throttling device 204, and the third throttling device 202, respectively, and a fourth communication port communicating with the second port of the first flow passage of the second dual-flow-passage heat exchanger 108, the first valve device includes at least a first operating state and a second operating state, and in the first operating state of the first valve device, the first valve device opens a communication passage between the first communication port and the third communication port, closes a communication passage between the fourth communication port and the second communication port and the first communication port, and in the second operating state of the first valve device, the first valve device opens a communication passage between the first communication port and the second communication port, and opening a communication channel between the third communication port and the fourth communication port. Specifically, the first valve device may be the first multi-way reversing device 201, the first multi-way reversing device 201 includes a second connection port 2011, a third connection port 2012, a fourth connection port 2013 and a first connection port 2014, or the first multi-way reversing device 201 further includes a first connection pipe communicated with the second connection port, a second connection pipe communicated with the third connection port, a third connection pipe communicated with the fourth connection port, and a fourth connection pipe communicated with the first connection port 2014, referring to fig. 5 specifically, where the first connection port 2014 is communicated with the first connection port or the first connection port 2014 is the first connection port, the second connection port 2011 is communicated with the third connection port or the second connection port 2011 is the third connection port, the third connection port 2012 is communicated with the fourth connection port or the third connection port 2012 is the fourth connection port, the fourth connection port 2013 is communicated with the second connection port or the fourth connection port 2013 is the second connection port, in a first working state of the first valve device, the first multi-way reversing device 201 can enable the communication channel between the first connection port 2014 and the second connection port 2011 to be communicated, and can close the communication channel between the fourth connection port 2013 and the third connection port 2012; in the second operating state of the first valve device, the first multi-way reversing device 201 can communicate the communication passage between the second connection port 2011 and the third connection port 2012 and communicate the communication passage between the fourth connection port 2013 and the first connection port 2014.

The first valve device may also include a second multi-way reversing device 201 ' and a first valve element 209, and specifically refer to fig. 6, wherein the second multi-way reversing device 201 ' includes a fifth connection port 2014 ', a sixth connection port 2011 ', a seventh connection port 2012 ' and an eighth connection port 2013 ', and similarly, the second multi-way reversing device 201 ' may also include a communication pipe communicated with each connection port of the second multi-way reversing device 201 ', two ports of the first valve element 209 are respectively communicated with the eighth connection port 2013 ' and the second connection port, the fifth connection port 2014 ' is communicated with the first connection port or the fifth connection port 2014 ' is the first connection port, the sixth connection port 2011 ' is communicated with the third connection port or the sixth connection port 2011 ', the seventh connection port 2012 ' is communicated with the fourth connection port or the seventh connection port 2012 ' is the fourth connection port, in the first operating state of the first valve device, the second multi-way reversing device 201 ' enables the communication channel between the fifth connecting port 2014 ' and the sixth connecting port 2011 ' to be communicated, enables the communication channel between the eighth connecting port 2013 ' and the seventh connecting port 2012 ' to be communicated, and closes the first valve element 209; in the second operation state of the first valve device, the second multi-way selector 201 ' can communicate the communication path between the sixth connection port 2011 ' and the seventh connection port 2012 ', can communicate the communication path between the eighth connection port 2013 ' and the fifth connection port 2014 ', and can communicate the first valve element 209. The first valve 209 may be a stop valve, a flow rate control valve, or a check valve, wherein when the first valve 209 is a check valve, the check valve is closed in a direction in which the refrigerant flows into the eighth connection port 2013 ', and the check valve is opened in a direction in which the refrigerant flows out of the eighth connection port 2013'.

The thermal management system further comprises a valve element, the branch of the first restriction 205 being arranged in parallel with the branch of the valve element. In particular, the valve element may be a one-way element 206, and the second communication port may be capable of communicating with the second port of the second heat exchanger 103, i.e. with the second port 200 of the second heat exchange module, through the parallel connection of the first throttling device 205 and the one-way element 206. Wherein, the one-way element 206 is turned on when the refrigerant flows out of the direction of the second port of the second heat exchanger 103, and is turned off when the refrigerant flows towards the direction of the second port of the second heat exchanger 103; in addition, the first throttling device 205 may also be an assembly integrated with a valve element, for example, the first throttling device 205 has a one-way stop function, the fluid is conducted from the second heat exchanger 103 to the fourth connection port 2013, and the second throttling element 205 is in a throttling state from the fourth connection port 2013 to the second heat exchanger 103. In other embodiments, the valve element may be a shut-off valve or a flow regulating valve or a solenoid valve having an on-off control function. In addition, the connection or communication described in this specification may be direct connection or communication, for example, two components may be assembled together, so that a connection pipeline may not be required, and the system is more compact, or may be indirect connection or communication, for example, communication through a pipeline, or communication after passing through a certain component, which is not illustrated herein; in the technical scheme of the invention, the opening of the throttling device means that the opening of the throttling device is the largest, the closing of the throttling device means that the opening of the throttling device is zero, and the opening of the throttling device means the state between opening and closing, or the throttling state of the throttling device. The third throttling device 202, the second throttling device 204 and the first throttling device 205 can be a thermal expansion valve, an electronic expansion valve, a capillary tube or other throttling devices capable of regulating the refrigerant flowing through; the check member or valve may also be integrated with the heat exchanger to form an assembly, which is more compact, such as the assembly formed by integrating the third throttling device 202 and the evaporator 102; the valve mentioned herein may be an electrically controlled on-off valve such as a solenoid valve, or an on-off control valve such as a flow rate control valve, as long as the flow path of the refrigerant can be controlled to be opened and closed, and the other valves described below may also be an on-off control valve such as a flow rate control valve or a solenoid valve.

The heat management system further comprises an air conditioning box, the air conditioning box comprises an air conditioning box body, the air conditioning box body is provided with a plurality of air channels and is communicated with the interior of the vehicle, and the air channels are provided with grids capable of adjusting the sizes of the air channels. In the solution shown in fig. 1, a fifth heat exchanger 401 is arranged in the air duct. Referring to fig. 2, when the first heat exchanger 101 has only a refrigerant passage, the first heat exchanger 101 exchanges heat with an air flow. When the heat management system further comprises the evaporator 102, the first heat exchanger 101 and the evaporator 102 can be arranged in the air duct of the air-conditioning box at a certain distance, or the temperature air door is arranged between the first heat exchanger 101 and the evaporator 102; the thermal management system is further provided with a fan 304, the fan 304 being configured to drive the airflow.

Taking fig. 1 as an example to describe the operation mode of the thermal management system, the refrigeration modes of the thermal management system include a first refrigeration mode and a second refrigeration mode, in the first refrigeration mode, the first flow channel of the first heat exchanger 101 is only used as a refrigerant channel and does not participate in heat exchange or a small amount of heat exchange, the refrigerant discharged from the refrigerant outlet of the first flow channel of the first heat exchanger 101 enters the first port 100 of the heat exchange module through the first valve device, in the heat exchange module, the refrigerant first passes through the first dual-flow-channel heat exchanger 108 and then enters the second heat exchanger 103, the refrigerant discharged from the second heat exchanger 103 enters the third throttling device 202 through the one-way element 206, the second throttling device 204 is closed, the refrigerant absorbs heat in the evaporator 102, and the refrigerant discharged from the evaporator 102 enters the inlet of the compressor 10. The refrigerant of the refrigerant system releases heat in the second heat exchanger 103, and if the heat exchange capacity of the second heat exchanger 103 is reduced, the second coolant system can be simultaneously opened, the first coolant system is closed, the second valve device is in the first working position, the first coolant system and the second coolant system do not exchange coolant, the second pump 503 is opened, the heat is released by the radiator 504, which is equivalent to increasing the heat dissipation area of the second heat exchanger 103, and the heat dissipation capacity is enhanced. In the second cooling mode of the thermal management system, the difference between the first cooling mode and the second cooling mode is that the thermal management system also turns on the second throttling device 204 and the second cooling liquid system, that is, turns on the first pump 109, and the second valve device 601 is in the first operating position, so that the heat generating components such as the battery can be cooled.

In a heating mode of the heat management system, the refrigerant releases heat to air in the first heat exchanger 101 or to the cooling liquid of the third cooling liquid system, the refrigerant discharged from the refrigerant outlet of the first heat exchanger 101 enters the second port 200 of the heat exchange module through the first throttling device 205, and in the heat exchange module, the refrigerant firstly passes through the second heat exchanger 103, and the refrigerant discharged from the second heat exchanger 103 enters the first flow channel of the first dual-flow-channel heat exchanger 108 and then enters the inlet of the compressor. In the heating mode of the first embodiment, the refrigerant is throttled and depressurized by the first throttling device 205, and the refrigerant absorbs heat of the airflow in the second heat exchanger 103, and at this time, if the heat exchange capacity of the second heat exchanger is reduced, such as the second heat exchanger 103 is frosted, the thermal management system may start the second cooling liquid system, and absorb heat of the motor through the second cooling liquid system; in this case, the second valve device can be in the first operating position, the second coolant system absorbing only the heat generated by the electric machine; the second valve device can also be in a second working position, and simultaneously opens the first cooling liquid system and the second cooling liquid system, at this time, the first cooling liquid system and the second cooling liquid system are arranged in series, and at this time, the cooling liquid absorbs heat generated by heat-generating equipment such as a motor, a battery and the like.

Referring to fig. 3 and 4, compared to the embodiment illustrated in fig. 1 and 2, the heat exchange module includes three ports, a first port of the second heat exchanger 103 and a first port of the first flow channel of the first dual-flow-channel heat exchanger 108 are both communicated with the first port 100 of the heat exchange module, a second port of the second heat exchanger 103 is communicated with the second port 200 of the heat exchange module, and a second port of the first flow channel of the first dual-flow-channel heat exchanger 108 is both communicated with the third port 300 of the heat exchange module. The first valve arrangement comprises a first valve module 3100, a second valve module 3200, a third valve module 3400 and a fourth throttle device 3300, wherein the second valve module 3200 and the fourth throttle device 3300 are arranged in parallel. In this embodiment, the thermal management system includes a third coolant system. A refrigerant outlet of a first flow channel of the first heat exchanger 101 is communicated with a first port of the first valve module 3100, a first port of the second valve module 3200 and a first port of the fourth throttling device 3300, a second port of the fourth throttling device 3300 and a second port of the second valve module 3200 are communicated with a first port of the heat exchange module, a second port of the first valve module 3100 can be communicated with a refrigerant inlet of the second dual-flow-channel heat exchanger through the second throttling device 204, a second port of the first valve module 3100 can also be communicated with a second port 200 of the heat exchange module through the first throttling device 205, namely communicated with a second port of the second heat exchanger 103, and the second port 200 of the heat exchange module can be communicated with the second throttling device and the third throttling device through the valve element 206; the second port of the first valve module 3100 is also able to communicate with the evaporator 102 through the third throttling device 202; the third port 300 of the heat exchange module, i.e., the refrigerant outlet of the first flow path of the first dual flow path heat exchanger 108, is in communication with the compressor inlet through a third valve module 3400. Referring to fig. 4, the difference from the embodiment illustrated in fig. 3 is that the first heat exchanger 101 can exchange heat with the airflow, and the first heat exchanger 101 is directly disposed in the air conditioning box.

Taking the embodiment illustrated in fig. 3 as an example to describe the operation mode of the thermal management system, in the first cooling mode of the thermal management system, the first flow path of the first heat exchanger 101 is only used as a refrigerant path, or the third pump 403 is not operated, the refrigerant discharged from the first flow path of the first heat exchanger 101 enters the first port of the second heat exchanger 103 through the second valve module 3200, the refrigerant releases heat in the second heat exchanger 103, the refrigerant discharged from the second port of the second heat exchanger 103 enters the third throttling device 202 through the valve element 206, the refrigerant is throttled and depressurized through the third throttling device 202, the refrigerant absorbs heat in the evaporator 102 to lower the temperature of the passenger compartment, and then enters the compressor 10 to enter the next cycle, and the third valve module is closed to disconnect the first flow path of the first dual-flow-path heat exchanger 108 from the inlet of the compressor 10. In the second cooling mode of the thermal management system, the refrigerant discharged from the second port of the second heat exchanger 103 may further enter the second throttling device 204 through the valve element 206, after being throttled and depressurized by the second throttling device 204, the refrigerant exchanges heat with the coolant of the first coolant system in the second dual-flow-channel heat exchanger 104, the refrigerant absorbs heat of the coolant of the first coolant system, and the cooled coolant may utilize the third heat exchanger 105 to reduce heat of the battery and/or utilize the fourth heat exchanger 502 to reduce heat of the motor. It is now possible to select whether the second coolant system is involved in heat exchange by controlling the second valve device in the first operating position or in the second operating position.

In the heating mode of the thermal management system, the third coolant system is in an operating state, that is, the third pump operates, the first flow path of the first heat exchanger 101 enters the first dual-flow-path heat exchanger 108 through the fourth throttling device 3300, at this time, the third valve module 3400 is opened, the first throttling device 205, the second throttling device 204 and the third throttling device 202 are all closed, the refrigerant is throttled and depressurized through the fourth throttling device 3300, and then exchanges heat with the coolant of the second coolant system in the first dual-flow-path heat exchanger 108 to absorb heat of the coolant of the second coolant system, and at this time, whether the second coolant system participates in heat exchange can be selected by controlling the second valve device to be in the first operating position or the second operating position. The coolant heat of the second coolant system comes from the heat release of the electric machine and/or the battery. In this way, the heat of the motor and/or the battery is released in the air duct of the air conditioning box through the thermal management system.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.

Claims

1. A thermal management system comprising a refrigerant system and a coolant system, the refrigerant of the refrigerant system being isolated from circulation by a coolant of the coolant system; the heat management system comprises a refrigerant system, a heat exchange module and a heat exchange module, wherein the refrigerant system comprises a compressor, a first heat exchanger and a first valve device, an outlet of the compressor can be communicated with the first valve device through the first heat exchanger, the heat exchange module comprises a second heat exchanger and a first dual-flow-channel heat exchanger, and a branch where a first flow channel of the first dual-flow-channel heat exchanger is located is serially communicated with or parallelly arranged with a branch where the second heat exchanger is located; the first heat exchanger can be communicated with the second port of the heat exchange module through the first valve device, and the first heat exchanger can also be communicated with the first port of the heat exchange module through the first valve device;

2. The thermal management system of claim 1, wherein the first heat exchange module has two ports; the branch where the first flow channel of the first dual-flow-channel heat exchanger is located and the branch where the second heat exchanger is located are arranged in parallel, the first port of the second heat exchanger and the first port of the first flow channel of the first dual-flow-channel heat exchanger are both communicated with the first port of the heat exchange module, and the second port of the second heat exchanger and the second port of the first flow channel of the first dual-flow-channel heat exchanger are both communicated with the second port of the heat exchange module; or the first runner of the first dual-runner heat exchanger is communicated with the second heat exchanger in series and then communicated with the first port of the heat exchange module and the second port of the heat exchange module;

or the first heat exchange module is provided with three ports, the first port of the second heat exchanger and the first port of the first runner of the first dual-runner heat exchanger are both communicated with the first port of the heat exchange module, the second port of the second heat exchanger is communicated with the second port of the heat exchange module, and the second port of the first runner of the first dual-runner heat exchanger is communicated with the third port of the heat exchange module.

3. The thermal management system of claim 1 or 2, wherein the thermal management system comprises a second dual flow channel heat exchanger, the coolant system further comprising a second coolant system comprising a second flow channel of the second dual flow channel heat exchanger, the second coolant system being in heat exchange relationship with the refrigerant system at the second dual flow channel heat exchanger;

the thermal management system includes a second valve device having four ports, each of the first coolant systems having a first interface and a second interface, the second coolant system having a third interface and a fourth interface, the first port of the second valve device in communication with the first interface, the second port of the second valve device in communication with the second interface, the third port of the second valve device in communication with the third interface, the fourth port of the second valve device in communication with the fourth interface;

the second valve device comprises a first working position and a second working position, in the first working position of the second valve device, the first port of the second valve device is communicated with the second port of the second valve device, and the third port of the second valve device is communicated with the fourth port of the second valve device; in the second operating position of the second valve device, the first port of the second valve device is in communication with the third port of the second valve device, and the second port of the second valve device is in communication with the fourth port of the second valve device.

4. The thermal management system of claim 3, wherein the second coolant system comprises a first pump and a third heat exchanger, the first pump, the third heat exchanger, and the second flow path of the second dual-flow-path heat exchanger being capable of serial communication; the first cooling liquid system also comprises a fourth heat exchanger and a second pump, and second flow passages of the second pump, the fourth heat exchanger and the first dual-flow-passage heat exchanger can be communicated in series;

the first interface is communicated with an outlet of the second pump, the second interface is communicated with a first port of the fourth heat exchanger, and a second port of the fourth heat exchanger is communicated with an inlet of the second pump through a second flow channel of the first dual-flow-channel heat exchanger; the fourth interface is communicated with an inlet of the second pump, the third interface is communicated with a first port of the third heat exchanger, and a second port of the third heat exchanger is communicated with an outlet of the second pump through a second flow channel of the second dual-flow-channel heat exchanger.

5. The thermal management system of claim 4, wherein the first coolant system further comprises a radiator and a third valve device, the first port of the third valve device being communicable with the second port of the third valve device and/or with the third port of the third valve device, the branch in which the radiator is located being in communication with the second port of the third valve device, the branch in which the second flow passage of the first dual-flow-passage heat exchanger is located being in communication with the third port of the third valve device, the first port of the third valve device being in communication with the inlet of the second pump or with the second port of the fourth heat exchanger.

6. The thermal management system of any of claims 1-5, comprising a first throttling device and a valve element, wherein the branch of the first throttling device is arranged in parallel with the branch of the valve element, and wherein the first valve device is capable of communicating with the second port of the heat exchange module via the first throttling device and the valve element; the heat management system comprises a second throttling device and a second dual-channel heat exchanger, wherein the second throttling device is arranged at the inlet of the first channel of the second dual-channel heat exchanger, and the outlet of the first channel of the second dual-channel heat exchanger is communicated with the inlet of the compressor; the refrigerant system also comprises a third throttling device and an evaporator, wherein the third throttling device is arranged at the inlet of the evaporator, and the outlet of the evaporator is communicated with the inlet of the compressor; the second port of the heat exchange module can be communicated with a third throttling device through the valve element and the second throttling device.

7. The thermal management system of claim 6, wherein the heat exchange module includes two ports, the first valve arrangement includes at least a first communication port in communication with a refrigerant outlet of the first heat exchanger, a second communication port in communication with the first, second, and third throttling arrangements, and a fourth communication port in communication with the compressor suction, the second communication port is communicable with the first, second, and third throttling arrangements, and the third communication port is communicable with the first port of the heat exchange module; the first valve device at least comprises a first working state and a second working state, the first working state of the first valve device is that the first communication port is communicated with the third communication port, the fourth communication port is not communicated with the second communication port, the second working state of the first valve device is that the first communication port is communicated with the second communication port, and the third communication port is communicated with the fourth communication port.

8. The thermal management system of claim 7, wherein the first valve device comprises a first multi-way reversing device, the first multi-way reversing device comprises a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, the first connecting port is communicated with the first communicating port, the second connecting port is communicated with the third communicating port, the third connecting port is communicated with the fourth communicating port, the fourth connecting port is communicated with the second communicating port, in a first operating state of the first valve device, the first connection port is in communication with the second connection port, the third connection port is not in communication with the fourth connection port, in a second working state of the first valve device, the first connecting port is communicated with the communication channel of the fourth connecting port, and the second connecting port is communicated with the communication channel of the third connecting port;

or, the first valve device comprises a second multi-way reversing device and a first valve element, the second multi-way reversing device comprises a fifth connecting port, a sixth connecting port, a seventh connecting port and an eighth connecting port, two ports of the first valve element are respectively communicated with the eighth connecting port and the second connecting port, the seventh connecting port is communicated with the fourth connecting port, the sixth connecting port is communicated with the third connecting port, the fifth connecting port is communicated with the first connecting port, in a first working state of the first valve device, the fifth connecting port is communicated with a communicating channel of the sixth connecting port, the seventh connecting port is communicated with a communicating channel of the eighth connecting port, the first valve device closes the first valve element, in a second working state of the first valve device, the fifth connecting port is communicated with a communicating channel of the eighth connecting port, the sixth connecting port is communicated with a communication channel of the seventh connecting port, and the first valve device opens the first valve element.

9. The thermal management system of claim 6, wherein the heat exchange module comprises three ports, the first valve device comprises a first valve module, a second valve module, a third valve module, and a fourth throttling device, the first port of the first valve module, and the first port of the second valve module are in communication with the refrigerant outlet of the first heat exchanger, the second port of the fourth throttling device, the second port of the second valve module are each in communication with the first port of the heat exchange module, the second port of the heat exchange module is communicable with the second port of the first valve module through the first throttling device, or the second port of the heat exchange module is communicable with the second throttling device, the third throttling device through the valve element; the third port of the heat exchange module can be in communication with the inlet of the compressor through the third valve module.

10. The thermal management system of any of claims 6-9, wherein the coolant system further comprises a third coolant system, wherein the first heat exchanger comprises a first flow path and a second flow path, wherein the first flow path of the first heat exchanger is a refrigerant flow path, and wherein the second flow path of the first heat exchanger is a coolant flow path; the third cooling liquid system comprises a third pump and a fifth heat exchanger, and a second flow channel of the first heat exchanger, the third pump and the fifth heat exchanger are communicated in series;

and/or the cooling liquid system further comprises a fourth cooling liquid system, the evaporator comprises a first flow channel and a second flow channel, the first flow channel of the evaporator is a refrigerant flow channel, and the second flow channel of the evaporator is a cooling liquid flow channel; the fourth cooling liquid system comprises a fourth pump and a sixth heat exchanger, and the second flow channel of the evaporator, the fourth pump and the sixth heat exchanger are communicated in series.