WO2023151639A1 - Thermal management system - Google Patents

Abstract

A thermal management system, comprising a refrigerant system and a cooling liquid system. In the refrigerant system, the thermal management system can change the flow direction of a refrigerant by means of a refrigerant-side flow path switching device. In the cooling liquid system, a cooling liquid flow channel of a first heat exchanger (11), a cooling liquid flow channel of a second heat exchanger (13), a third heat exchanger (21) and a temperature controller (22) may communicate by means of a water-side flow path switching device (20). The thermal management system has a relatively simple structure.

Description

thermal management system

This application is required to be submitted to the China Patent Office on February 12, 2022, with the application number 202210130632.4, and the name of the invention is "thermal management system", and submitted to the China Patent Office on February 22, 2022, with the application number 202210161252.7, and the name of the invention is The priority of two Chinese patent applications for "Thermal Management System", the entire contents of which are incorporated in this application by reference.

technical field

The invention relates to the technical field of thermal management, in particular to a thermal management system.

Background technique

In the application of domestic thermal management system, vehicle thermal management system or commercial thermal management system, there are more and more thermal management objects, resulting in relatively complex thermal management system, so how to simplify the thermal management system is a technical problem.

Contents of the invention

In the application of domestic thermal management system, vehicle thermal management system or commercial thermal management system, there are more and more thermal management objects, resulting in relatively complex thermal management system, so how to simplify the thermal management system is a technical problem.

Contents of the invention

The purpose of the present application is to provide a thermal management system to help solve the above problems.

One embodiment of the present application provides a thermal management system, including a refrigerant system and a coolant system, the thermal management system includes a first heat exchanger and a second heat exchanger, the first heat exchanger and the The second heat exchanger has a refrigerant flow path and a cooling liquid flow path respectively, the refrigerant system and the cooling liquid system can exchange heat in the first heat exchanger, and the refrigerant system and the cooling liquid system can In the heat exchange of the second heat exchanger, the coolant system includes a flow path switching device, a third heat exchanger and a temperature controller, and the flow path switching device has a coolant flow path connected to the first heat exchanger A communicating interface, the flow switching device has an interface communicating with the cooling liquid flow channel of the second heat exchanger, and the flow switching device has an interface communicating with the cooling liquid flow channel of the third heat exchanger An interface, the flow switching device has an interface communicating with the temperature controller.

The thermal management system provided by the embodiments of the present application includes a refrigerant system and a cooling liquid system, a cooling liquid flow path of the first heat exchanger, a cooling liquid flow path of the second heat exchanger, a third heat exchanger, and a cooling liquid system. The controller can be connected through a flow switching device, and such a thermal management system is relatively simple.

Description of drawings

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

FIG. 2 is a schematic connection diagram of the thermal management system in FIG. 1 in cooling mode;

Fig. 3 is a schematic diagram of connection of the thermal management system in Fig. 1 in heating mode;

FIG. 4 is a schematic connection diagram of the thermal management system in FIG. 1 in the heat dissipation mode;

Fig. 5 is a schematic diagram of the serial connection between the first sub-heat exchanger and the energy recovery device;

Fig. 6 is a schematic diagram of the parallel connection between the first sub-heat exchanger and the energy recovery device;

Fig. 7 is a schematic connection diagram of a second embodiment of the thermal management system;

Fig. 8 is a schematic connection diagram of a third embodiment of the thermal management system;

Fig. 9 is a schematic diagram of communication of four working states of the flow path switching device in Fig. 8;

Fig. 10 is a schematic connection diagram of a fourth embodiment of the thermal management system;

Fig. 11 is a schematic connection diagram of a fifth embodiment of the thermal management system.

Detailed ways

The thermal management system of the technical solution of the present invention can have multiple implementations, at least one of which can be applied to vehicle thermal management systems, and at least one implementation can be applied to other thermal management systems such as household thermal management systems or commercial thermal management systems, In the following, a thermal management device applied to a vehicle thermal management system is taken as an example to describe with reference to the accompanying drawings, and the fluid includes cooling liquid and refrigerant.

Please refer to Fig. 1-Fig. 7, an embodiment of the present invention provides a thermal management system, including a refrigerant system and a cooling liquid system, the thermal management system includes a first heat exchanger 11 and a second heat exchanger 13, the first heat exchanger The heat exchanger 11 and the second heat exchanger 13 respectively have a refrigerant flow path and a cooling liquid flow path, wherein the refrigerant flow path is a part of the refrigerant system, the cooling liquid flow path is a part of the cooling liquid system, and the refrigerant flow path and The coolant channel is not shown in the figure. In a specific embodiment, the first heat exchanger 11 and the second heat exchanger 13 may be plate heat exchangers. When the thermal management system is working, the refrigerant in the refrigerant system and the cooling liquid in the cooling liquid system can exchange heat in the first heat exchanger 11, and the refrigerant in the refrigerant system and the cooling liquid in the cooling liquid system can also exchange heat in the second heat exchanger 11. The refrigerant system includes a first flow path switching device 15, which is used to switch the flow direction of the refrigerant in the refrigerant system. In the embodiment of the present invention, the first flow path switching device can also be named as agent side flow path switching device; the coolant system includes a second flow switching device 20, a third heat exchanger 21 and a temperature controller 22, the second The flow path switching device is used to switch the flow direction of the cooling liquid in the cooling liquid system. In the embodiment of the present invention, the second flow path switching device may also be named as a water side flow path switching device. In this embodiment, the temperature controller 22 is used to adjust the temperature of the thermal management object, and the adjustment of the temperature of the thermal management object mentioned here refers to raising, lowering or maintaining the temperature of the thermal management object. In the vehicle thermal management system, the thermostat 22 can be a water-cooled plate, and the water-cooled plate is in contact with the vehicle power battery to adjust the temperature of the vehicle power battery; the thermostat 22 can also be used for vehicle indoor temperature regulation, at this time, the temperature The controller is arranged in the air-conditioning box; in the field of intelligent charging, the object of the temperature controller 22 can be a battery to be charged or other electronic equipment. In this embodiment, the second flow path switching device 20 is a four-way valve. In other embodiments, the second flow path switching device 20 may be a combination of two or more multi-way valves, which will not be described in detail. In the first working mode of the coolant system, the coolant system includes a first loop and a second loop. In the first loop, the coolant channel of the first heat exchanger 11 can pass through the second flow switching device 20 and the third loop. The cooling liquid channel of the heat exchanger 21 is communicated, and like this, the cooling liquid flowing through the cooling liquid channel of the first heat exchanger 11 can release heat or absorb heat in the third heat exchanger 21; in the second circuit, the second The coolant channel of the heat exchanger 13 can be communicated with the thermostat 22 through the second channel switching device 20, so that the coolant flowing through the coolant channel of the second heat exchanger 13 can enter the thermostat 22 for cooling The liquid releases or absorbs heat in the thermostat 22, thereby adjusting the temperature of the heat management object. Of course, the coolant system also includes a first pump 24 and a second pump 23, wherein the third heat exchanger 21 communicates with the coolant channel of the second flow path switching device 20 or the first heat exchanger 11 through the first pump 24, To drive the coolant flow in the first circuit, the thermostat 22 communicates with the second flow switching device 20 through the second pump 23 or communicates with the coolant channel of the second heat exchanger 13 to drive the coolant in the second circuit. flow in the circuit. In the second working mode of the cooling liquid system, the cooling liquid system includes a third circuit, and the cooling liquid channel of the first heat exchanger 11 can pass through the second flow path switching device 20 and the cooling liquid of the second heat exchanger. The coolant flow channel of the third heat exchanger 21 can communicate with the thermostat 22 through the second fluid switching device 20, so that the coolant flowing through the thermostat 22 can be released in the third heat exchanger 21 Or absorb heat. It should be noted that the first loop, the second loop and the third loop refer to the working loops formed when the coolant system is working. When the coolant system is working, the coolant system may only include the first loop and the second loop. One, for example, the refrigerant system does not work, the first and second circuits can be operated independently, respectively, or the thermal management has the other evaporator and condenser.

The second flow path switching device 20 has an interface communicated with the coolant channel of the first heat exchanger 11, the second flow channel switching device 20 has an interface communicated with the coolant channel of the second heat exchanger 13, and the second The flow path switching device 20 has an interface communicated with the coolant flow channel of the third heat exchanger 21 , and the second flow path switching device 20 has an interface communicated with the temperature controller 22 . Specifically, referring to FIG. 1 , the second flow path switching device 20 has a first interface 201 , a second interface 202 , a third interface 203 , and a fourth interface 204 . The first port communicates with the first interface 201, the coolant channel of the first heat exchanger 11 communicates with the second interface 202, and the second port of the coolant channel of the third heat exchanger 21 can pass through the first heat exchanger The cooling liquid channel of 11 communicates with the second interface 202, or the first interface 201 and the second interface 202 can communicate through the first heat exchanger 11 and the third heat exchanger 21, and the first port of the thermostat 22 communicates with the The third interface 203 communicates, the coolant channel of the second heat exchanger 13 communicates with the fourth interface 204, and the second port of the thermostat 22 can communicate with the fourth interface 204 through the coolant channel of the second heat exchanger 13 connected. Specifically, in the first working mode of the coolant system, the internal passage of the second flow switching device 20 connects the first port 201 with the second port 202 , and the internal passage of the second flow switching device 20 connects the third port 203 communicate with the fourth interface 204, so that the cooling liquid channel of the first heat exchanger 11, the cooling liquid of the third heat exchanger 21 The cooling liquid passage passes through the second flow passage switching device 20 to form the first circuit, of course the first circuit also includes the first pump 24 or other components, the cooling liquid passage of the second heat exchanger 13 and the temperature controller 22 pass through the first circuit The two flow path switching devices 20 form a second circuit, and of course the second circuit also includes a second pump 23 or other components; in the second working mode of the coolant system, the second flow path switching device 20 makes the second interface 202 and the first The four ports 204 are connected, and the second flow path switching device 20 makes the third port 203 communicate with the first port 201. In this way, the cooling liquid channel of the first heat exchanger 11, the cooling liquid channel of the third heat exchanger 21, The coolant channel of the second heat exchanger 13 and the temperature controller 22 form a third loop through the second flow switching device 20 , of course, the third loop also includes the first pump 24 , the second pump 23 or other components.

In this embodiment, the third heat exchanger 21 can exchange heat with air or air flow, and the coolant in the third heat exchanger 21 can absorb or release heat from the air flow. For example, the third heat exchanger 21 can be a microchannel heat exchanger. heater. In other embodiments, the third heat exchanger 21 can also be an energy recovery device. For example, the heat or cold in the coolant flowing through the energy recovery device can be stored in the energy recovery device. When the thermal management system needs it, the energy recovery device can The heat or cold can be released to the coolant. The third heat exchanger 21 communicates with the first interface of the second flow path switching device 20 through the first pump 24, so that when the coolant system is working, the first pump 24 can drive the flow of the coolant in the third heat exchanger 21, The thermostat 22 communicates with the third interface 203 of the second flow path switching device 20 through the second pump 23 , and the second pump 23 can drive the flow of cooling liquid in the thermostat 22 .

In this embodiment, the refrigerant system further includes a compressor 10 , a first flow path switching device 15 and a throttling element 12 , and the first flow path switching device 15 has a first connection port 151 , a second connection port 152 , and a third connection port 153 and the fourth connection port 154, the first flow path switching device 15 may be a four-way reversing valve, or a combination of multiple valves. Throttle element 12 can be electronic expansion valve or other Devices with a throttling function, such as capillary tubes, thermal expansion valves or ball valves with a throttling function. Specifically, the outlet of the compressor 10 communicates with the first connection port 151, the second connection port 152 communicates with a port of the refrigerant flow channel of the first heat exchanger 11, and the refrigerant flow channel of the first heat exchanger 11 The other port communicates with one port of the refrigerant passage of the second heat exchanger 13 through the throttling element 12, the other port of the refrigerant passage of the second heat exchanger 13 communicates with the third connection port 153, and the fourth The connection port 154 communicates with the inlet of the compressor 10 or communicates with the inlet of the compressor 10 through a gas-liquid separator. Of course, other functional parts, such as a liquid receiver, may also be included in the refrigerant system, which will not be described in detail here. When the refrigerant system is working, control the working state of the first flow path switching device 15 so that the first connection port 151 communicates with the second connection port 152, and the third connection port 153 communicates with the fourth connection port 154. At this time, the compressor 10 The outlet of the first heat exchanger 11 can be communicated with the refrigerant flow channel of the first heat exchanger 11, the throttling element 12 is connected with the refrigerant flow channel of the second heat exchanger 13, and the refrigerant flow channel of the second heat exchanger 13 is connected with the compressor 10 The inlet is connected. It can be known that the first heat exchanger 11 is a condenser, and the coolant in the coolant flow channel in the first heat exchanger 11 is heated, the second heat exchanger 13 is an evaporator, and the second heat exchanger 13 The coolant inside is cooled. Control the working state of the first flow path switching device 15, and also make the first connection port 151 communicate with the third connection port 153, and the second connection port 152 communicate with the fourth connection port 154. At this time, the outlet of the compressor 10 can pass through The refrigerant flow path of the second heat exchanger 13 and the throttling element 12 communicate with the refrigerant flow path of the first heat exchanger 11, and the refrigerant flow path of the first heat exchanger 11 communicates with the inlet of the compressor 10, which can It is known that the second heat exchanger 13 is a condenser, the coolant in the coolant flow path in the second heat exchanger 13 is heated, the first heat exchanger 11 is an evaporator, and the coolant in the first heat exchanger 11 was cooled.

The thermal management system has at least one of the following four working modes, please refer to FIG. 2 , cooling mode: the cooling liquid system is in the first working mode, specifically, the cooling liquid of the first heat exchanger 11 The flow passage communicates with the third heat exchanger 21 through the second flow switching device 20, and the coolant flow passage of the second heat exchanger 13 communicates with the temperature controller 22 through the second flow switching device 20; the first flow switching device 15 The first heat exchanger is used as a condenser, and the second heat exchanger is used as an evaporator, so that the heat in the refrigerant of the refrigerant system is released into the air or stored in the third heat exchanger 21 through the cooling liquid, and the refrigeration The cooling capacity of the refrigerant in the refrigerant system passes through the cooling liquid in the thermostat 22 to reduce the temperature of the vehicle battery or other thermal management objects, thereby reducing the temperature of the vehicle battery or other thermal management objects. In the cooling mode of the thermal management system, the passage in the first flow switching device 15 connects the first connection port 151 with the second connection port 152, and the passage in the first flow switching device 15 connects the third connection port 153 with the fourth connection port. The port 154 communicates; the channel in the second flow path switching device 20 connects the first port 201 with the second port 202 , and the channel in the second flow path switching device 20 connects the third port 203 with the fourth port 204 .

Please refer to Fig. 3, heating mode: different from the cooling mode, the first flow switching device 15 makes the first heat exchanger act as an evaporator, and the second heat exchanger acts as a condenser, so that the refrigerant in the refrigerant system The cooling capacity is released to the air or stored in the third heat exchanger 21 through the cooling liquid, and the heat in the refrigerant of the refrigerant system passes through the cooling liquid in the thermostat 22 to increase the temperature of the vehicle battery or other thermal management objects , so as to realize the increase of the temperature of the vehicle battery or other thermal management objects. In the heating mode of the thermal management system, the passage in the first flow switching device 15 connects the first connection port 151 with the third connection port 153 , and the passage in the first flow switching device 15 connects the second connection port 152 with the fourth connection port 153 . The connecting port 154 communicates; the channel in the second flow path switching device 20 connects the first port 201 with the second port 202 , and the channel in the second flow path switching device 20 connects the third port 203 with the fourth port 204 .

Self-circulation mode: the coolant system is in the first working mode, the refrigerant system is not working, the second The coolant in the first circuit circulates by itself under the drive of the first pump 24, and/or the coolant in the second circuit circulates by itself under the drive of the second pump 23, and the refrigerant system does not work, which can save energy and also The temperature of a vehicle battery or other thermally managed object can be regulated to some extent.

Please refer to Fig. 4, heat dissipation mode: the refrigerant system does not work, the coolant system is in the second working mode, the coolant channel of the thermostat 22 passes the coolant of the second flow switching device 20 and the third heat exchanger 21 The flow channel is connected, and the coolant flow channel of the first heat exchanger is communicated with the coolant flow channel of the second heat exchanger through the second flow path switching device, so that the heat or cold in the coolant in the thermostat 22 It can be released or stored in the third heat exchanger 21 through the second flow path switching device 20, and then the temperature controller 22 can adjust the temperature of the vehicle battery or other thermal management objects.

The third heat exchanger 21 can also include a first sub-heat exchanger 211 and an energy recovery device 212, wherein the first sub-heat exchanger 211 can be a micro-channel heat exchanger, which can exchange heat with the air flow, in a specific embodiment , the first sub-heat exchanger 211 is connected in series with the energy recovery device 212, as shown in Figure 5; or, the first sub-heat exchanger 211 and the energy recovery device 212 are arranged in parallel, as shown in Figure 6, the second flow path The switching device 20 can communicate with at least one of the first sub-heat exchanger 211 and the energy recovery device 212. At this time, a three-way valve or a three-way flow regulating valve is required to selectively communicate with the first sub-heat exchanger 211 or the energy recovery device. .

The heat management system provided in this embodiment includes a refrigerant system and a coolant system. In the refrigerant system, the heat management system can change the flow direction of the refrigerant through the first flow path switching device, and then change the flow direction of the first heat exchanger and the second heat exchanger. The function of the heat exchanger, the coolant flow channel of the first heat exchanger 11, the coolant flow channel of the second heat exchanger 13, the third heat exchanger 21 and the temperature controller 22 can pass through the second flow path switching device 20 Communication, and then realize the temperature adjustment of the thermal management object, such a thermal management system is relatively simple. In addition, when the third heat exchanger 21 is an energy recovery device, the third heat exchanger 21 The energy stored in the thermostat can be released in the thermostat 22 through the coolant, thereby adjusting the temperature of the vehicle battery or other thermal management objects, which is beneficial to energy saving.

Please refer to Fig. 7, the difference from the above embodiment is that the second flow path switching device 20 can be a five-way valve or a combination of at least two multi-way valves, and the number of thermostats can be multiple, as in this embodiment The quantity of thermostat is three, and thermostat comprises the first thermostat 221, the second thermostat 222 and the third thermostat 223, the first thermostat 221, the second thermostat 222 and the third thermostat The thermostats 223 are connected in parallel, but of course may also be connected in series. Specifically, the second flow path switching device 20 has a first interface 201, a second interface 202, a third interface 203, a fourth interface 204, and a fifth interface 205; the third heat exchanger 21 includes a first sub-heat exchanger 211 And the energy recovery device 212, wherein, the first port of the first sub-heat exchanger 211 communicates with the first interface 201, the first port of the energy recovery device 212 communicates with the fifth interface 205, and the first port of the first sub-heat exchanger 211 Two ports, the second port of the energy recovery device 212 communicates with the cooling liquid channel of the first heat exchanger, so that the first sub-heat exchanger 211 and the energy recovery device 212 communicate with the interface of the second flow path switching device 20 respectively, Correspondingly, the coolant system further includes a third pump 25, wherein the energy recovery device 212 communicates with the fifth interface 205 through the third pump 25, and the first sub-heat exchanger 211 communicates with the first interface 201 or the first interface 201 through the first pump 24. A cooling liquid flow channel of the heat exchanger is connected. The first sub-heat exchanger 211 and the energy recovery device 212 are respectively communicated with the second flow path switching device 20, so that the first sub-heat exchanger 211 or the energy recovery device 212 can be selectively connected as required.

In the self-circulation mode, cooling mode and cooling mode of the thermal management system, the channel in the second flow switching device 20 communicates the first interface 201 with the second interface 202, and/or, the channel in the second flow switching device 20 The channel makes the fifth interface 205 communicate with the second interface 202; the internal channel of the second flow path switching device 20 communicates the second interface 202 with the fourth interface 204; The first sub-heat exchanger 211 or the energy recovery device 212 is selectively connected through the second flow path switching device 20 .

In the heat dissipation mode of the thermal management system, the channel in the second flow path switching device 20 connects the first interface 201 with the third interface 203, and/or, the channel in the second flow path switching device 20 connects the fifth interface 209 with the The third interface 203 communicates; the channel in the second flow path switching device 20 makes the second interface 202 communicate with the fourth interface 204 .

In addition, the coolant system also includes a heater 25, the heater can be an electric heater or other forms of heaters, the heater 25 can increase the temperature of the coolant, and the coolant flow path of the first heat exchanger 11 can pass through the heater 25 is in communication with the cooling liquid channel of the third heat exchanger 21 , and/or, the cooling liquid channel of the second heat exchanger 13 can communicate with the temperature controller 22 through the heater 25 .

Please refer to the thermal management system shown in Fig. 8-Fig. The heat exchanger 13 has a refrigerant flow channel and a cooling liquid flow channel respectively, wherein the refrigerant flow channel is a part of the refrigerant system, the cooling liquid flow channel is a part of the cooling liquid system, and the refrigerant flow channel and the cooling liquid flow channel are not in the As shown in the figure, in a specific embodiment, the first heat exchanger 11 and the second heat exchanger 13 may be plate heat exchangers. When the thermal management system is working, the refrigerant in the refrigerant system and the cooling liquid in the cooling liquid system can exchange heat in the first heat exchanger 11, and the refrigerant in the refrigerant system and the cooling liquid in the cooling liquid system can also exchange heat in the second heat exchanger 11. 13 for heat exchange, and the coolant system includes a water-side flow path switching device 20, a third heat exchanger 21, and a thermostat 22. In this embodiment, the thermostat 22 is used to adjust the temperature of the thermal management object, as described here Adjusting the temperature of a thermal management object refers to raising, lowering, or maintaining the temperature of a thermal management object. In the vehicle thermal management system, the thermostat 22 can be a water cooling plate, and the water cooling plate is in contact with the vehicle power battery for adjusting the temperature of the vehicle power battery; Field, the object of the temperature controller 22 may be a battery to be charged or other electronic equipment. In this embodiment, the water-side flow switching device 20 is an eight-way valve. In other embodiments, the water-side flow switching device 20 may be a combination of two or more multi-way valves, which will not be described in detail. The flow path switching device 20 has an interface communicated with the coolant flow path of the first heat exchanger 11, the water side flow path switching device 20 has an interface communicated with the coolant flow path of the second heat exchanger 13, and the water side flow path The switching device 20 has an interface communicated with the coolant flow channel of the third heat exchanger 21 , and the water-side flow channel switching device 20 has an interface communicated with the temperature controller 22 . Specifically, please refer to FIG. 8 and FIG. 9 , the water side flow path switching device 20 has a first interface 201, a second interface 202, a third interface 203, a fourth interface 204, a fifth interface 205, a sixth interface 206, a The seventh interface 207 and the eighth interface 208, wherein, the third heat exchanger 21 communicates with the first interface 201, and the third heat exchanger 21 communicates with the second interface 202, or the first interface 201 and the second interface 202 can pass through The third heat exchanger 21 communicates, and the coolant flow channel of the first heat exchanger 11 communicates with the third interface 203 and the fourth interface 204 respectively, or the third interface 203 can pass the coolant flow of the first heat exchanger 11 The channel communicates with the fourth interface 204, and the coolant channel of the second heat exchanger 13 communicates with the fifth interface 205 and the sixth interface 206 respectively, or the fifth interface 205 can pass the coolant flow of the second heat exchanger 13 The channel communicates with the sixth interface 206 , and the temperature controller 22 communicates with the seventh interface 207 and the eighth interface 208 respectively, or the seventh interface 207 can communicate with the eighth interface 208 through the temperature controller 22 .

In this embodiment, the third heat exchanger 21 can exchange heat with air or air flow, and the coolant in the third heat exchanger 21 can absorb or release heat from the air flow. For example, the third heat exchanger 21 can be a microchannel heat exchanger. heater. In other embodiments, the third heat exchanger 21 can also be an energy recovery device. For example, the heat or cold in the coolant flowing through the energy recovery device can be stored in the energy recovery device. When the thermal management system needs it, the energy recovery device can heat or cold can be released to the cold coolant.

The coolant system also includes a first pump 24 and a second pump 23, wherein the third heat exchanger 21 communicates with the water-side flow switching device 20 through the first pump 24, so that when the coolant system is working, the first pump 24 can Drive the flow of coolant in the third heat exchanger 21 , and the thermostat 22 communicates with the water-side flow path switching device 20 through the second pump 23 , and the second pump 23 can drive the flow of coolant in the thermostat 22 .

In this embodiment, the refrigerant system further includes a compressor 10 and a throttling element 12. Specifically, the outlet of the compressor 10 communicates with the inlet of the refrigerant passage of the first heat exchanger 11, and the outlet of the first heat exchanger 11 The outlet of the refrigerant flow channel communicates with the inlet of the refrigerant flow channel of the second heat exchanger 13 through the throttling element 12, and the outlet of the refrigerant flow channel of the second heat exchanger 13 communicates with the inlet of the compressor 10. The reagent system may also include other functional components, such as a liquid reservoir or a gas-liquid separator, which will not be described in detail here. When the refrigerant system is working, the outlet of the compressor 10 can communicate with the refrigerant flow channel of the second heat exchanger 13 through the refrigerant flow channel of the first heat exchanger 11 and the throttling element 12, and the second heat exchanger 13 The refrigerant channel communicates with the inlet of the compressor 10. It can be known that the first heat exchanger 11 is a condenser, the coolant in the coolant channel in the first heat exchanger 11 is heated, and the second heat exchanger 13 is The evaporator, the coolant in the second heat exchanger 13 is cooled.

The thermal management system has at least one of the following four working modes, please refer to Fig. 8 and Fig. 9-1, the first working mode: the coolant channel of the first heat exchanger 11 passes through the water side channel switching device 20 It communicates with the third heat exchanger 21, and the coolant channel of the second heat exchanger 13 communicates with the thermostat 22 through the water side flow path switching device 20; in this way, the heat in the refrigerant of the refrigerant system passes through the coolant in the The third heat exchanger 21 is released into the air or stored, and the cold energy in the refrigerant of the refrigerant system is passed through the cooling liquid to reduce the temperature of the vehicle battery or other thermal management objects in the thermostat 22, thereby realizing the vehicle battery or other heat management. The temperature of the managed object is lowered. The first in a thermal management system In the working mode, the water-side flow switching device 20 is in the first working state: the channel in the water-side flow switching device 20 connects the first interface 201 with the third interface 203, and the channel in the water-side flow switching device 20 makes the second The second interface 202 communicates with the fourth interface 204, the passage in the water side flow path switching device 20 connects the fifth interface 205 with the eighth interface 208, and the passage in the water side flow path switching device 20 connects the sixth interface 206 with the seventh The interface 207 communicates.

Please refer to Figure 8 and Figure 9-2, the second working mode: the coolant channel of the first heat exchanger 11 communicates with the thermostat 22 through the water side flow channel switching device 20, and the cooling of the second heat exchanger 13 The liquid flow path communicates with the third heat exchanger 21 through the water side flow path switching device 20; in this way, the heat in the refrigerant of the refrigerant system increases the temperature of the vehicle battery or other thermal management objects at the temperature controller 22 through the cooling liquid, Further, the temperature of the vehicle battery or other heat management objects is raised, and the refrigerant in the refrigerant system absorbs or stores heat in the air in the third heat exchanger 21 through the cooling liquid. In the second working mode of the thermal management system, the water-side flow switching device 20 is in the second working state: the channel in the water-side flow switching device 20 connects the eighth interface 208 with the third interface 203, and the water-side flow switching The channel in the device 20 connects the fourth port 204 with the seventh port 207, the channel in the water-side flow path switching device 20 makes the fifth port 205 communicate with the first port 201, and the channel in the water-side flow path switching device 20 makes The sixth interface 206 communicates with the second interface 202 .

Please refer to Figure 8 and Figure 9-3, the third working mode: the third heat exchanger 21 communicates with the thermostat 22 through the water side flow path switching device 20; in this embodiment, the refrigerant system may not work, so Energy can be saved. The heat or cold in the coolant in the thermostat 22 can be released or stored in the third heat exchanger 21 through the water-side flow path switching device 20, and then the thermostat 22 can regulate the temperature of the vehicle battery or other The temperature of the thermally managed object. In the third working mode of the thermal management system, the water-side flow switching device 20 is in the third working state: the channel in the water-side flow switching device 20 The first interface 201 communicates with the seventh interface 207 , and the channel in the water-side flow path switching device 20 communicates the second interface 202 with the eighth interface 208 .

Please refer to Fig. 9 and Fig. 9-4, the fourth working mode: one end of the coolant flow path of the thermostat 22 communicates with the other end of the coolant flow path of the thermostat 22 through the water side flow path switching device 20, In this way, the cooling liquid in the temperature controller 22 realizes self-circulation through the water-side flow path switching device 20 . In the fourth working mode of the thermal management system, the water-side flow switching device 20 is in a fourth working state: the channel in the water-side flow switching device 20 communicates with the eighth interface 208 and the seventh interface 207 .

Referring to Fig. 10, the third heat exchanger 21 can also include a first sub-heat exchanger 211 and an energy recovery device 212, wherein the first sub-heat exchanger 211 can be a micro-channel heat exchanger, which can exchange heat with the air flow, in a In a specific embodiment, the first sub-heat exchanger 211 is connected in series with the energy recovery device 212, as shown in Figure 5; or, the first sub-heat exchanger and the energy recovery device are arranged in parallel, as shown in Figure 6, the water side The flow path switching device 20 can communicate with at least one of the first sub-heat exchanger 211 and the energy recovery device 212. At this time, a three-way valve or a three-way flow regulating valve is required to selectively communicate with the first sub-heat exchanger or the energy recovery device. device.

The thermal management system provided in this embodiment includes a refrigerant system and a coolant system, the coolant flow channel of the first heat exchanger 11, the coolant flow channel of the second heat exchanger 13, the third heat exchanger 21 and The temperature controller 22 can communicate with the water-side flow path switching device 20, thereby realizing the temperature adjustment of the heat management object, and such a heat management system is relatively simple. In addition, when the third heat exchanger 21 is an energy recovery device, the energy stored in the third heat exchanger 21 can be released in the thermostat 22 through the coolant, thereby adjusting the temperature of the vehicle battery or other thermal management objects, so that Conducive to saving energy.

Please refer to FIG. 11 , the difference from the above-mentioned embodiment is that: the water side flow path switching device 20 can It is a ten-way valve or a combination of at least two multi-way valves. The number of thermostats can be multiple. For example, in this embodiment, the number of thermostats is three. The thermostats include a first thermostat 221, a second thermostat The second thermostat 222 and the third thermostat 223, the first thermostat 221, the second thermostat 222 and the third thermostat 223 are connected in parallel, and of course they can also be connected in series. Specifically, the water side flow path switching device 20 has a first interface 201 and a second interface 202, a ninth interface 209 and a tenth interface 210; the third heat exchanger 21 includes a first sub-heat exchanger 211 and an energy recovery device 212 , wherein the first sub-heat exchanger 211 communicates with the first interface 201 and the second interface 202 respectively, or in other words, the first interface 201 can communicate with the second interface 202 through the first sub-heat exchanger 211, and the energy recovery device 212 They communicate with the ninth interface 209 and the tenth interface 210 respectively, and the ninth interface 209 can communicate with the tenth interface 210 through the energy recovery device. In this way, the first sub-heat exchanger 211 and the energy recovery device 212 communicate with the interface of the water-side flow switching device 20 respectively. Correspondingly, the cooling liquid system further includes a third pump 25, wherein the energy recovery device 212 passes through the third pump 25 It communicates with the ninth interface 209 or the tenth interface 210 , and the first sub-heat exchanger 211 communicates with the first interface 201 or the second interface 202 through the first pump 24 . The first sub-heat exchanger and the energy recovery device are respectively communicated with the water-side flow switching device, so that the first sub-heat exchanger or the energy recovery device can be selectively connected as required.

In the first working mode of the thermal management system, the water-side flow switching device 20 is in the first working state: the channel in the water-side flow switching device 20 connects the first interface 201 with the third interface 203, and the water-side flow switching The channel in the device 20 communicates the second interface 202 with the fourth interface 204; and/or, the channel in the water side flow path switching device 20 makes the ninth interface 209 communicate with the third interface 203, and the water side flow path switching device 20 The passage in the water side flow path switching device 20 connects the fifth port 205 with the eighth port 208, and the passage in the water side flow path switching device 20 makes the sixth The interface 206 communicates with the seventh interface 207;

In the second working mode of the thermal management system, the water-side flow switching device 20 is in the second working state: the channel in the water-side flow switching device 20 connects the eighth interface 208 with the third interface 203, and the water-side flow switching The channel in the device 20 connects the fourth interface 204 with the seventh interface 207; the channel in the water side flow path switching device 20 makes the fifth interface 205 communicate with the first interface 201, and the channel in the water side flow path switching device 20 makes The sixth interface 206 communicates with the second interface 202; and/or, the passage in the water-side flow path switching device 20 communicates with the ninth interface 209 and the fifth interface 205, and the passage in the water-side flow path switching device 20 makes the tenth The interface 210 communicates with the sixth interface 206;

In the third working mode of the thermal management system, the water-side flow switching device 20 is in the third working state: the channel in the water-side flow switching device 20 connects the first interface 201 with the seventh interface 207, and the water-side flow switching The channel in the device 20 communicates with the second interface 202 and the eighth interface 208; and/or, the channel in the water side flow path switching device 20 makes the ninth interface 209 communicate with the seventh interface 207, and the water side flow path switching device 20 The channel in makes the tenth interface 210 communicate with the eighth interface 208;

In the fourth working mode of the thermal management system, the water-side flow switching device 20 is in a fourth working state: the channel in the water-side flow switching device 20 communicates with the eighth interface 208 and the seventh interface 207 .

In addition, the coolant system also includes an electric heater 25, which can increase the temperature of the coolant, and the coolant flow channel of the first heat exchanger 11 can communicate with the water side flow path switching device 20 through the electric heater 25, And/or the coolant channel of the second heat exchanger 13 can communicate with the water-side channel switching device 20 through the electric heater 25 .

It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the specification has described the present invention in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art It should be understood that those skilled in the art can still make modifications or equivalent replacements to the present invention without departing from the spirit and spirit of the present invention. The technical solutions within the scope and their improvements shall all fall within the scope of the claims of the present invention.

Claims (14)

1. A heat management system, including a refrigerant system and a coolant system, the heat management system includes a first heat exchanger and a second heat exchanger, the first heat exchanger and the second heat exchanger have A refrigerant flow channel and a cooling liquid flow channel, the refrigerant system and the cooling liquid system can exchange heat in the first heat exchanger, and the refrigerant system and the cooling liquid system can exchange heat in the second heat exchanger The coolant system includes a water-side flow switching device, a third heat exchanger, and a temperature controller, and the water-side flow switching device has a cooling liquid flow channel connected to the first heat exchanger The water-side flow switching device has an interface communicating with the coolant flow channel of the second heat exchanger, and the water-side flow switching device has an interface connected to the cooling liquid flow of the third heat exchanger. An interface communicating with the channel, and the water-side flow switching device has an interface communicating with the thermostat.
2. The thermal management system according to claim 1, wherein the thermal management system has at least one of the following four working modes,

   The first working mode: the coolant channel of the first heat exchanger communicates with the third heat exchanger through the water-side channel switching device, and the coolant channel of the second heat exchanger passes through The water side flow path switching device is in communication with the thermostat;

   The second working mode: the coolant channel of the first heat exchanger communicates with the thermostat through the water side channel switching device, and the coolant channel of the second heat exchanger communicates with the thermostat through the The water side flow path switching device is in communication with the third heat exchanger;

   The third working mode: the third heat exchanger communicates with the thermostat through the water side flow switching device;

   The fourth working mode: one end of the coolant channel of the thermostat passes through the water side channel The switching device communicates with the other end of the cooling liquid channel of the thermostat.
3. The thermal management system according to claim 1 or 2, wherein the water-side flow switching device has a first interface and a second interface, the third heat exchanger communicates with the first interface, and the The third heat exchanger communicates with the second interface;

   The third heat exchanger includes a first sub-heat exchanger and an energy recovery device, the first sub-heat exchanger communicates with the energy recovery device in series, or the first sub-heat exchanger communicates with the energy recovery device The recovery devices are arranged in parallel, and the water-side flow switching device can communicate with at least one of the first sub-heat exchanger and the energy recovery device.
4. The thermal management system according to claim 3, wherein the water-side flow switching device has a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface and an eighth interface, and the The coolant channels of the first heat exchanger communicate with the third interface and the fourth interface respectively, and the coolant channels of the second heat exchanger communicate with the fifth interface and the sixth interface respectively. communicated, the thermostat communicates with the seventh interface and the eighth interface respectively;

   In the first working mode of the thermal management system, the water-side flow switching device is in the first working state: the first interface communicates with the third interface, and the second interface communicates with the fourth interface communicated, the fifth interface is communicated with the eighth interface, and the sixth interface is communicated with the seventh interface;

   In the second working mode of the thermal management system, the water-side flow switching device is in the second working state: the eighth interface communicates with the third interface, and the fourth interface communicates with the seventh interface communicated, the fifth interface is communicated with the first interface, and the sixth interface is communicated with the second interface;

   In the third working mode of the thermal management system, the water-side flow switching device is in a third working state: the first interface communicates with the seventh interface, and the second interface communicates with the eighth interface. connected;

   In the fourth working mode of the thermal management system, the water-side flow path switching device is in a fourth working state: the eighth port communicates with the seventh port.
5. The thermal management system according to claim 1 or 2, wherein the water-side flow switching device has a first interface and a second interface, a ninth interface and a tenth interface;

   The third heat exchanger includes a first sub-heat exchanger and an energy recovery device, the first sub-heat exchanger communicates with the first interface and the second interface respectively, and the energy recovery device communicates with the first interface respectively The ninth interface communicates with the tenth interface.
6. The thermal management system according to claim 5, wherein the water-side flow switching device has a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface and an eighth interface, and the The coolant channels of the first heat exchanger communicate with the third interface and the fourth interface respectively, and the coolant channels of the second heat exchanger communicate with the fourth interface and the fifth interface respectively. communicated, the thermostat communicates with the seventh interface and the eighth interface respectively;

   In the first working mode of the thermal management system, the water-side flow switching device is in the first working state: the first interface communicates with the third interface, and the second interface communicates with the fourth interface and/or, the ninth interface communicates with the third interface, the tenth interface communicates with the fourth interface; the fifth interface communicates with the eighth interface, and the sixth interface communicate with the seventh interface;

   In the second working mode of the thermal management system, the water-side flow switching device is in the second Working state: the eighth interface communicates with the third interface, the fourth interface communicates with the seventh interface; the fifth interface communicates with the first interface, and the sixth interface communicates with the The second interface is communicated; and/or, the ninth interface is communicated with the fifth interface, and the tenth interface is communicated with the sixth interface;

   In the third working mode of the thermal management system, the water-side flow switching device is in a third working state: the first interface communicates with the seventh interface, and the second interface communicates with the eighth interface. and/or, the ninth interface communicates with the seventh interface, and the tenth interface communicates with the eighth interface;

   In the fourth working mode of the thermal management system, the water-side flow path switching device is in a fourth working state: the eighth port communicates with the seventh port.
7. The thermal management system according to any one of claims 1-6, wherein the refrigerant system includes a compressor and a throttling element, and when the refrigerant system is in operation, the outlet of the compressor can pass through the The refrigerant flow channel of the first heat exchanger and the throttling element communicate with the refrigerant flow channel of the second heat exchanger, and the refrigerant flow channel of the second heat exchanger communicates with the inlet of the compressor .
8. The thermal management system according to claim 1, wherein the refrigerant system includes a flow path switching device on the agent side, configured to switch the flow direction of the refrigerant in the refrigerant system;

   In the first working mode of the cooling liquid system, the cooling liquid system includes at least one of a first circuit and a second circuit, and in the first circuit, the cooling liquid channel of the first heat exchanger It can communicate with the coolant channel of the third heat exchanger through the water-side channel switching device; in the second loop, the coolant channel of the second heat exchanger can pass through the water side flow path cut The exchanging device communicates with the temperature controller; in the second working mode of the cooling liquid system, the cooling liquid system includes a third circuit, and in the third circuit, the cooling liquid flow of the first heat exchanger The channel can communicate with the coolant channel of the second heat exchanger through the water side channel switching device, and the coolant channel of the third heat exchanger can communicate with the coolant channel through the second fluid switching device. The thermostat is connected.
9. The thermal management system according to claim 8, wherein the refrigerant system includes a compressor and a throttling element, and along the refrigerant flow direction of the refrigerant system, the throttling element is located at the first Between the refrigerant flow path of the heat exchanger and the refrigerant flow path of the second heat exchanger, the thermal management system has at least one of the following four working modes,

   Cooling mode: the outlet of the compressor communicates with the refrigerant passage of the first heat exchanger through the agent-side flow switching device, and the refrigerant passage of the second heat exchanger communicates with the compressor The inlet of is connected, the cooling system is in the first working mode, and the cooling liquid system includes the first circuit and the second circuit;

   Heating mode: the outlet of the compressor communicates with the refrigerant passage of the second heat exchanger through the agent-side flow switching device, and the refrigerant passage of the first heat exchanger communicates with the compressor The inlet of the machine is connected, the cooling system is in the first working mode, and the cooling liquid system includes the first circuit and the second circuit;

   Self-circulation mode: the compressor does not work, the coolant system is in the first working mode, and the coolant system includes the second circuit;

   Heat dissipation mode: the compressor does not work, and the coolant system is in the second working mode.
10. The thermal management system according to claim 8 or 9, wherein the water side The flow path switching device has a first interface, a second interface, a third interface and a fourth interface, the first port of the coolant channel of the third heat exchanger communicates with the first interface, and the third heat exchanger The second port of the coolant channel of the heat exchanger communicates with the second interface through the coolant channel of the first heat exchanger; the first port of the thermostat communicates with the third interface, so The second port of the thermostat is communicated with the fourth interface through the coolant channel of the second heat exchanger;

    In the first working mode of the coolant system, the water-side flow switching device connects the first port with the second port, and the water-side flow switching device connects the third port with the fourth port connected;

    In the second working mode of the coolant system, the water-side flow switching device connects the second port with the fourth port, and the water-side flow switching device connects the third port with the first port connected.
11. The thermal management system according to claim 10, wherein the third heat exchanger comprises a first sub-heat exchanger and an energy recovery device, and the first sub-heat exchanger is in series with the energy recovery device communicated, the first port of the third heat exchanger communicates with the second port of the third heat exchanger through the first sub-heat exchanger, the energy recovery device; or the first sub-heat exchanger The device is arranged in parallel with the energy recovery device, and the water side flow path switching device can communicate with at least one of the first sub-heat exchanger and the energy recovery device.
12. The thermal management system according to claim 8 or 9, wherein the water-side flow switching device has a first interface, a second interface and a fifth interface;

    The third heat exchanger includes a first sub-heat exchanger and an energy recovery device, the first port of the first sub-heat exchanger communicates with the first interface, and the second port of the first sub-heat exchanger port through the The coolant channel of the first heat exchanger communicates with the second port, the first port of the energy recovery device communicates with the fifth port, and the second port of the energy recovery device passes through the first The coolant channel of the heat exchanger communicates with the second interface.
13. The thermal management system according to claim 12, wherein the water-side flow switching device has a third interface and a fourth interface, the first port of the thermostat communicates with the third interface, and the The second port of the thermostat is communicated with the fourth interface through the coolant channel of the second heat exchanger;

    In the first working mode of the coolant system, the water-side flow switching device connects the first port with the second port, and/or, the water-side flow switching device connects the fifth port with the second port The second interface is communicated; the water side flow path switching device communicates the third interface with the fourth interface;

    In the second working mode of the coolant system, the water-side flow switching device connects the second port with the fourth port, and the water-side flow switching device connects the third port with the first port and/or, the water-side flow switching device communicates the third interface with the fifth interface.
14. The thermal management system according to any one of claims 8-13, characterized in that, the agent-side flow path switching device has a first connection port, a second connection port, a third connection port and a fourth connection port, and the The compressor communicates with the first connection port, a port of the refrigerant flow channel of the first heat exchanger communicates with the second interface, and a port of the refrigerant flow channel of the second heat exchanger communicates with the The inlet of the compressor is communicated;

    In the heating mode of the thermal management system, the first connection port communicates with the third connection port, and the second connection port communicates with the fourth connection port;

    In the cooling mode of the thermal management system, the first connection port communicates with the second connection port, The third connection port communicates with the fourth connection port.