CN221023255U - Thermal management system and vehicle - Google Patents

Abstract

Embodiments of the present application provide a thermal management system and a vehicle. The thermal management system comprises an electric drive cooling liquid pipeline, a battery cooling liquid pipeline and a multi-way valve; the multi-way valve is provided with at least a first interface, a second interface, a third interface, a fourth interface and a fifth interface; the electric cooling liquid pipeline is provided with an electric driving system, two ends of the electric cooling liquid pipeline are respectively connected with the first interface and the third interface, the electric cooling liquid pipeline further comprises a radiator branch, a radiator is arranged on the radiator branch, one end of the radiator branch is connected to a main pipeline between the electric driving system of the electric cooling liquid pipeline and the third interface, and the other end of the radiator branch is connected to the second interface; the battery cooling liquid pipeline is provided with a battery and a battery cooler, and two ends of the battery cooling liquid pipeline are respectively connected with the fourth interface and the fifth interface. The heat management system and the vehicle provided by the embodiment of the application simplify the pipeline structure and the control logic under the condition of keeping a plurality of working modes of the heat management system.

Description

Thermal management system and vehicle

Technical Field

The application relates to the field of vehicles, in particular to a thermal management system and a vehicle.

Background

With the continuous development of new energy automobiles, the thermal management system of the vehicle becomes more and more complex. In order to realize the switching between different pipelines, three-way valves, four-way valves or other water valve combinations are adopted by people. However, multiple water valves result in multiple line interfaces, complex line connections, and corresponding control logic. In addition, the combination of a plurality of water valves also leads to the large mass and the large assembly space of the whole thermal management system.

Disclosure of utility model

To at least partially solve the above-described problems, according to one aspect of the present application, an embodiment of the present application provides a thermal management system including an electric drive coolant line, a battery coolant line, and a multi-way valve; the multi-way valve is provided with at least a first interface, a second interface, a third interface, a fourth interface and a fifth interface; the electric cooling liquid pipeline is provided with an electric driving system, two ends of the electric cooling liquid pipeline are respectively connected with the first interface and the third interface, the electric cooling liquid pipeline further comprises a radiator branch, a radiator is arranged on the radiator branch, one end of the radiator branch is connected to a main pipeline between the electric driving system of the electric cooling liquid pipeline and the third interface, and the other end of the radiator branch is connected to the second interface; the battery cooling liquid pipeline is provided with a battery and a battery cooler, and two ends of the battery cooling liquid pipeline are respectively connected with the fourth interface and the fifth interface; the multi-way valve can be switched among a plurality of configurations, when the multi-way valve is in at least part of the configurations of the plurality of configurations, four interfaces of the first interface, the second interface, the third interface, the fourth interface and the fifth interface are communicated with each other in pairs, and the interfaces which are not communicated with other interfaces are closed, so that the electric drive cooling liquid pipeline and the battery cooling liquid pipeline can be operated in series under the condition that the radiator is connected and disconnected, and can be operated independently under the condition that the radiator is connected and disconnected.

In some preferred embodiments, the plurality of configurations includes a first configuration, the first port and the second port are in communication, the fourth port and the fifth port are in communication, and the third port is closed such that the electrically driven coolant line and the battery coolant line are capable of operating independently of each other with the radiator in place.

In some preferred embodiments, the plurality of configurations includes a second configuration, the first port and the fifth port are in communication and the third port and the fourth port are in communication when the multi-way valve is in the second configuration, the second port being closed to enable the electrically driven coolant line and the battery coolant line to operate in series without the radiator being connected.

In some preferred embodiments, the plurality of configurations includes a third configuration, the first port and the fifth port are in communication, the second port and the fourth port are in communication, and the third port is closed such that the electrically driven coolant line and the battery coolant line are operable in series with the radiator in the engaged condition.

In some preferred embodiments, the plurality of configurations includes a fourth configuration, the first port and the third port are in communication, the fourth port and the fifth port are in communication, and the second port is closed such that the electrically driven coolant line and the battery coolant line are capable of operating independently of each other without the radiator being connected.

In some preferred embodiments, the multi-way valve includes a valve seat, a grating, and a valve spool; the grid plate is arranged on the valve seat, a plurality of flow guide grids are arranged on the grid plate, and each flow guide grid is respectively communicated with one of the first interface, the second interface, the third interface, the fourth interface and the fifth interface; the valve core is rotatably arranged on the valve seat, a plurality of valve clacks are arranged on the valve core along the circumferential direction, two diversion trenches are arranged on at least part of the valve clacks, and each diversion trench can be buckled on the two diversion grids to form a sealing runner so as to communicate corresponding interfaces of the two diversion grids.

In some preferred embodiments, the number of the flow cells is 6, and two of the 6 flow cells are in communication with the first interface.

In some preferred embodiments, the battery coolant line is further provided with a heating member for heating the coolant in the battery coolant line.

In some preferred embodiments, the battery coolant line and the electrically driven coolant line are further provided with temperature sensors for measuring the temperature of the coolant in the line.

According to another aspect of the present application, embodiments of the present application also provide a vehicle including the thermal management system provided by any of the embodiments of the present application.

According to the thermal management system and the vehicle provided by the embodiment of the application, the electric drive cooling liquid pipeline and the battery cooling liquid pipeline are connected through the multi-way valve, and the connection modes of the electric drive cooling liquid pipeline and the battery cooling liquid pipeline inside and can be changed by switching the configuration of the multi-way valve, so that the pipeline structure and the control logic are simplified under the condition that a plurality of working modes of the thermal management system are reserved, the weight of the thermal management system is reduced, and the assembly space of the thermal management system is saved.

Drawings

FIG. 1 is a schematic diagram of a thermal management system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a thermal management system provided by another embodiment of the present application;

FIG. 3 is a schematic diagram of a thermal management system with a multi-way valve provided by an embodiment of the present application in a first configuration;

FIG. 4 is a schematic diagram of a thermal management system with a multi-way valve provided by an embodiment of the present application in a second configuration;

FIG. 5 is a schematic diagram of a thermal management system with a multi-way valve provided by an embodiment of the present application in a third configuration;

FIG. 6 is a schematic diagram of a thermal management system with a multi-way valve provided by an embodiment of the present application in a fourth configuration;

FIG. 7 is a schematic illustration of a grating plate of a multi-way valve provided by an embodiment of the present application;

FIG. 8 is a schematic illustration of a spool of a multi-way valve provided by an embodiment of the present application;

FIG. 9 is a schematic illustration of a flap of a multi-way valve provided by an embodiment of the present application;

Fig. 10 is a schematic diagram of a grid plate connection mode of a multiway valve according to an embodiment of the present application.

Detailed Description

The technical solutions of the preferred embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and that the various embodiments and technical features can be combined with each other without collision. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application as claimed.

Embodiments of the present application provide a thermal management system. The thermal management system may be applied to a vehicle, and more particularly, to an electric or hybrid electric vehicle that is propelled at least in part using an electric motor. The thermal management system may be used to regulate the temperature within the electric drive system, battery system, and/or cab of the vehicle to be in a normal range.

Electric drive systems typically include drive motors, motor controllers, reducers, etc. that generate heat during operation that needs to be transferred to prevent the electric drive system from overheating, resulting in damage or reduced life of the electric drive system. The battery system generally includes a battery and a battery cooler (Chiller), the battery is disposed in a battery pack, a coolant flow channel is provided between a plurality of batteries in the battery pack, and when the coolant flows through the coolant flow channel, heat generated when the battery works is taken out to prevent the battery from overheating, or external heat is given to the battery, so that the battery cannot work normally without too low a temperature, and the coolant may be a mixture of glycol and water, for example. The battery cooler is used for radiating the cooling liquid flowing through the battery so that the cooling liquid can be maintained at a preset temperature.

FIG. 1 is a schematic diagram of a thermal management system provided by an embodiment of the present application. As shown in fig. 1, the thermal management system provided by the embodiment of the present application includes an electrically driven coolant line 10, a battery coolant line 20, and a multi-way valve 30.

The multi-way valve 30 has at least a first port 31, a second port 32, a third port 33, a fourth port 34, and a fifth port 35. In this embodiment, the multi-way valve 30 may be a five-way valve, a six-way valve, a seven-way valve, etc., which is not limited by the present application. The inside of the multi-way valve 30 is provided with a switchable structure, so that the multi-way valve 30 can realize different configurations, and when the multi-way valve 30 is in different configurations, different interfaces are communicated and closed to switch the pipeline connection structure and change the cooling liquid flow channel.

The electric drive cooling liquid pipeline 10 is provided with an electric drive system 11, and the electric drive system 11 can be cooled through the electric drive cooling liquid pipeline 10 so as to prevent the electric drive system 11 from overheating. The two ends of the electric cooling liquid pipeline 10 are respectively connected with the first interface 31 and the third interface 33, the electric cooling liquid pipeline 10 further comprises a radiator branch, a radiator 12 is arranged on the radiator branch, one end of the radiator branch is connected with a main pipeline between the electric driving system 11 of the electric cooling liquid pipeline 10 and the third interface 33, and the other end of the radiator branch is connected with the second interface 32.

The electrically driven coolant line 10 is further provided with a first pump 51, which first pump 51 may be provided at a position of the electrically driven coolant line 10 close to the first port 31 so as to be integrated with the multi-way valve 30. The first pump 51 may pump the coolant away from the first port 31, through the electric drive system 11, and optionally through the radiator 12, and then to the multi-way valve 30 via the second port 32 or the third port 33. The radiator 12 is used for cooling the coolant in the electric drive coolant line 10 to control the temperature of the coolant to be within a preset range.

The radiator branch may be selectively connected to the electric cooling liquid pipeline 10 when the electric cooling liquid pipeline 10 needs cooling, for example, the first interface 31 and the second interface 32 may be communicated, and the third interface 33 may be closed, at this time, the cooling liquid circulates in the electric cooling liquid pipeline 10 and can flow through the radiator 12, so that the temperature of the cooling liquid in the electric cooling liquid pipeline 10 is reduced; the first port 31 may be communicated with the third port 33, and the second port 32 may be closed, and at this time, the coolant circulates in the electric coolant line 10 and does not flow through the radiator 12, so that the coolant in the electric coolant line 10 may store heat.

The battery coolant line 20 is provided with a battery 21 and a battery cooler 22, and both ends of the battery coolant line 20 are connected to the fourth interface 34 and the fifth interface 35, respectively. The battery 21 may be cooled by the battery coolant line 20 to prevent overheating of the battery 21 or to heat the battery 21 to avoid an excessively low temperature of the battery 21, so that the battery 21 can operate normally. When the cooling liquid flows through the battery cooler 22, the cooling liquid can exchange heat with the external environment or the heat pump through the battery cooler 22 by means of air-conditioning refrigerant to reduce the temperature. The battery 21 and the battery cooler 22 may be arranged in series, and in other embodiments, the battery 21 and the battery cooler 22 may be arranged in parallel.

The battery coolant line 20 is also provided with a second pump 52, and the second pump 52 may be disposed in the battery coolant line 20 proximate to the fourth port 34 to facilitate integration with the multiport valve 30. Second pump 52 may pump coolant away from fourth interface 34, through battery 21 and/or battery cooler 22, and to multi-way valve 30 via fifth interface 35. In other embodiments, the second pump 52 may also be disposed in the battery coolant line 20 proximate to the fifth port 35, and the second pump 52 may pump coolant out of the fifth port 35 into the multi-way valve 30, out of the fourth port 34, through the battery 21 and/or the battery cooler 22, and through the fifth port 35 to the multi-way valve 30.

As shown in fig. 2, in other embodiments of the present application, the battery coolant line 20 may be further provided with a heating member 23, and the heating member 23 is used to heat the coolant in the battery coolant line 20 to raise the temperature of the battery 21. The heating element 23 may be disposed between the fourth interface 34 and the battery 21, or may be disposed between the battery cooler 22 and the fifth interface 35, and compared with the heating element 23 disposed between the battery 21 and the battery cooler 22, the above two arrangements may avoid heat loss caused by the heated cooling fluid flowing through the battery cooler 22, and reduce the heating effect. In some embodiments, the heating element 23 may be PTC (Positive Temperature Coefficient) heating elements to provide better heating effect and higher safety.

In some embodiments, the thermal management system may further include a heat pump disposed adjacent to the battery cooler 22. The heat pump is capable of absorbing heat from the battery cooler 22 and carrying the heat to the external environment or passenger compartment; the heat pump is also capable of absorbing heat from the external environment and carrying the heat to the passenger compartment. The heat pump is capable of dissipating heat from the battery cooler 22 and also supplying heat to the passenger compartment.

The multi-way valve 30 is capable of switching between a plurality of configurations, and when the multi-way valve 30 is in at least a partial configuration of the plurality of configurations, four of the first, second, third, fourth, and fifth interfaces 31, 32, 33, 34, 35 are in communication with each other and are not closed off by interfaces in communication with the other interfaces, such that the electrically driven coolant line 10 and the battery coolant line 20 are capable of operating in series with and without access to the radiator 12, and are capable of operating independently of each other with and without access to the radiator 12.

According to the thermal management system provided by the embodiment of the application, the electric drive cooling liquid pipeline 10 and the battery cooling liquid pipeline 20 are connected through the multi-way valve 30, and the connection modes of the electric drive cooling liquid pipeline 10 and the battery cooling liquid pipeline 20 can be changed by switching the configuration of the multi-way valve 30, so that the pipeline structure and the control logic are simplified under the condition of keeping various working modes of the thermal management system, the weight of the thermal management system is reduced, and the assembly space of the thermal management system is saved.

In some embodiments, the plurality of configurations includes a first configuration in which the first port 31 and the second port 32 are in communication, the fourth port 34 and the fifth port 35 are in communication, and the third port 33 is closed to enable the electrically driven coolant line 10 and the battery coolant line 20 to operate independently of each other with the radiator 12 in place.

Fig. 3 is a schematic diagram of a thermal management system provided by an embodiment of the present application with the multi-way valve 30 in a first configuration. As shown in fig. 3, when the multi-way valve 30 is in the first configuration, the electrically driven coolant line 10 and the battery coolant line 20 each form two circuits, operating independently of each other. In the electric drive cooling liquid pipeline 10, cooling liquid flows out from the first pump 51, flows through the electric drive system 11, the radiator 12, the second interface 32 and the first interface 31 in sequence, and flows to the first pump 51 again, so that cooling liquid circulation in the electric drive cooling liquid pipeline 10 is completed; in the battery coolant line 20, the coolant flows out of the second pump 52, flows through the battery 21, the battery cooler 22, the fifth port 35, and the fourth port 34 in this order, and flows back to the second pump 52, thereby completing the circulation of the coolant in the battery coolant line 20.

The multi-way valve 30, when in the first configuration, may correspond to the following conditions:

Working condition 1: the battery 21 emits a high cooling demand and the electric drive system 11 emits a cooling demand. At this time, the electric drive system 11 is cooled by the radiator 12, and the battery 21 is cooled by the battery cooler 22.

Working condition 2: the battery 21 has no cooling or heating requirements and the passenger compartment has no heating requirements. At this time, the temperature of the electric drive system 11 is regulated by the radiator 12, and the battery coolant line 20 is self-circulated.

In some embodiments, the plurality of configurations includes a second configuration in which the first port 31 and the fifth port 35 are in communication, the third port 33 and the fourth port 34 are in communication, and the second port 32 is closed to enable the electrically driven coolant line 10 and the battery coolant line 20 to operate in series without the radiator 12 being connected.

Fig. 4 is a schematic diagram of a thermal management system provided by an embodiment of the present application with the multi-way valve 30 in a second configuration. As shown in fig. 4, when the multi-way valve 30 is in the second configuration, the electrically driven coolant line 10 and the battery coolant line 20 are connected in series to form a circuit. In the series circuit, the coolant flows out of the first pump 51, flows through the electric drive system 11, the third port 33, the fourth port 34, the second pump 52, the battery 21, the battery cooler 22, the fifth port 35, and the first port 31 in this order, and flows back to the first pump 51, thereby completing the circulation of the coolant in the series circuit. In the embodiment in which the heating element 23 is provided, the cooling liquid will also flow through the heating element 23.

When the multi-way valve 30 is in the second configuration, the following conditions may be corresponded:

Working condition 3: the battery 21 emits a heating demand. At this time, the electric drive system 11 is connected in series with the battery 21, and the heat generated by the electric drive system 11 can be transferred to the battery 21 through the cooling liquid, so as to heat the battery 21 and recover the waste heat of the electric drive system 11.

Working condition 4: the battery 21 has no cooling or heating requirement, the passenger cabin has a heating requirement, and the electric drive system 11 has sufficient waste heat (the temperature T _{Electric drive} of the cooling liquid in the electric drive cooling liquid pipeline is more than the preset temperature T _{Target object} ). At this time, the heat pump can absorb heat through the battery cooler 22, and carry the heat to the passenger cabin, and simultaneously realize the waste heat recovery of the electric drive system 11.

Working condition 5: the battery 21 and the passenger cabin have heating requirements, and the electric drive system 11 has sufficient waste heat (the temperature T _{Electric drive} of the cooling liquid in the electric drive cooling liquid pipeline is more than the preset temperature T _{Target object} ). The battery 21 and the passenger compartment may be heated by the waste heat of the electric drive system 11 at this time.

Working condition 6: both the battery 21 and the passenger compartment emit the highest heating demand. At this time, the heating element 23 can be turned on only by the heat generated by the electric drive system 11 to heat the cooling liquid in the series circuit, thereby meeting the heating requirement of the battery 21, and the heat pump can absorb heat from the battery cooler 22 and convey the heat to the passenger cabin, thereby meeting the heating requirement of the passenger cabin. In the embodiment, the heating element 23 on the battery cooling liquid pipeline 20 can expand the low-temperature working range of the heat pump from-10 ℃ to-30 ℃, so that the heating requirement of the passenger cabin can be met by absorbing heat from the battery cooler 22 through the heat pump without arranging the air heating element 23 on the air-conditioning side of the passenger cabin; and because the heat pump is used for carrying the heat of the heating element 23, the compressor of the heat pump can generate heat, and the heat can be used for heating the passenger cabin, so that the power of the passenger cabin side air heating element 23 is reduced, and the cost is optimized; in addition, the heating element 23 on the battery cooling liquid pipeline 20 has higher heating efficiency on the battery 21, and the heating effect is better than that of active heating through the electric drive system 11.

In some embodiments, the plurality of configurations includes a third configuration in which the first port 31 and the fifth port 35 are in communication, the second port 32 and the fourth port 34 are in communication, and the third port 33 is closed to enable the electrically driven coolant line 10 and the battery coolant line 20 to operate in series with the radiator 12 being accessed.

Fig. 5 is a schematic diagram of a thermal management system provided by an embodiment of the present application with the multi-way valve 30 in a third configuration. As shown in fig. 5, with the multiport valve 30 in the third configuration, the electrically driven coolant line 10 and the battery coolant line 20 are connected in series to form a circuit. In the series circuit, the coolant flows out of the first pump 51, flows through the electric drive system 11, the radiator 12, the second port 32, the fourth port 34, the second pump 52, the battery 21, the battery cooler 22, the fifth port 35, and the first port 31 in this order, and flows back to the first pump 51, thereby completing the circulation of the coolant in the series circuit.

When the multi-way valve 30 is in the third configuration, the following conditions may be met:

Working condition 7: the battery 21 emits a low cooling demand and the electric drive system 11 emits a cooling demand. At this time, the cooling liquid in the series circuit flows through the radiator 12, and the radiator 12 can cool the cooling liquid in the whole series circuit to a certain extent, so as to realize cooling of the battery 21 and cooling of the electric drive system 11, and meet the low cooling requirement of the battery 21 and the cooling requirement of the electric drive.

In some embodiments, the plurality of configurations includes a fourth configuration in which the first port 31 and the third port 33 communicate, the fourth port 34 and the fifth port 35 communicate, and the second port 32 is closed to enable the electrically driven coolant line 10 and the battery coolant line 20 to operate independently of each other without the radiator 12 being connected.

Fig. 6 is a schematic diagram of a thermal management system provided by an embodiment of the present application with the multi-way valve 30 in a fourth configuration. As shown in fig. 6, when the multi-way valve 30 is in the fourth configuration, the electrically driven coolant line 10 and the battery coolant line 20 each form two circuits, operating independently of each other. In the electric drive cooling liquid pipeline 10, cooling liquid flows out from the first pump 51, flows through the electric drive system 11, the second interface 32 and the first interface 31 in sequence, and flows to the first pump 51 again, so that cooling liquid circulation in the electric drive cooling liquid pipeline 10 is completed; in the battery cooling liquid pipeline 20, the cooling liquid flows out from the second pump 52, flows through the battery 21, the battery cooler 22, the fifth interface 35 and the fourth interface 34 in sequence, and flows back to the second pump 52, so that the cooling liquid circulation in the battery cooling liquid pipeline 20 is completed, and in the embodiment that the battery cooling liquid pipeline 20 is provided with the heating piece 23, the cooling liquid also flows through the heating piece 23.

When the multi-way valve 30 is in the fourth configuration, the following conditions may be met:

working condition 8: the battery 21 has no cooling or heating requirement, the passenger cabin has heating requirement, and the electric drive waste heat is insufficient (T _{Electric drive} ＜T _{Target object} ). At this time, the battery 21 cooling liquid loop self-circulates, the electric drive cooling liquid loop stores heat, the heat pump absorbs heat from the external environment, and after the electric drive cooling liquid loop stores heat (T _{Electric drive} ＞T _{Target object} ), the multi-way valve 30 is switched to the second configuration.

Working condition 9: the battery 21 and the passenger compartment have a heating requirement (partial requirement), and the electric drive system 11 is insufficient in waste heat (T _{Electric drive} ＜T _{Target object} ). At this time, the heating element 23 can be started, and the cooling liquid in the battery cooling liquid pipeline 20 is heated through the heating element 23, so that the battery 21 and the battery cooler 22 are heated, the heat pump absorbs heat from the battery cooler 22 and conveys the heat to the passenger cabin, and the heating requirement of the passenger cabin is met.

In the embodiment of the application, a plurality of switching modes can be realized through one multi-way valve, and all requirements of cooling an electric drive system, recovering waste heat of the electric drive system, passively cooling a battery, cooling a battery cooler and heating the battery are met, so that the structure is simple. Through refined thermal management, the energy consumption is reduced, and the endurance is increased.

Those skilled in the art may implement the above-described functions using a multi-way valve having various structures, and the present application is not limited thereto, and exemplary embodiments of the present application provide a multi-way valve 30 capable of implementing the above-described communication functions. Fig. 7 is a schematic diagram of a grid plate of a multi-way valve provided by an embodiment of the present application, fig. 8 is a schematic diagram of a valve core of the multi-way valve provided by the embodiment of the present application, and fig. 9 is a schematic diagram of a valve clack of the multi-way valve provided by the embodiment of the present application. Referring also to fig. 7-9, in some preferred embodiments, the multi-way valve 30 includes a valve seat, a plate 72, and a valve core 71; the grid plate 72 is arranged on the valve seat, a plurality of flow guide grids 721 are arranged on the grid plate 72, and each flow guide grid 721 is respectively communicated with one of the first interface 31, the second interface 32, the third interface 33, the fourth interface 34 and the fifth interface 35; the valve core 71 is rotatably disposed on the valve seat, the valve core 71 is provided with a plurality of valve clacks 711 along the circumferential direction, at least some valve clacks 711 of the plurality of valve clacks 711 are provided with two diversion trenches 7111, and each diversion trench 7111 can be buckled on two diversion grids 721 to form a sealing flow channel so as to communicate corresponding interfaces of the two diversion grids 721.

The valve seat is the mounting base for the other structures of the multi-way valve 30, and the grid plate 72 and the valve core 71 are arranged on the valve seat. The plate 72 may be fixedly disposed on the valve seat, and the valve element 71 may be rotatably disposed on the valve seat. When the plate 72 and the valve body 71 are both disposed on the valve seat, the plate 72 and the valve body 71 can be connected with each other in a sealing manner.

As shown in fig. 7, the grid plate 72 is provided with a plurality of flow cells 721, and the number of the flow cells 721 may be 5 or more, for example, the number of the flow cells 721 may be 5, 6, 7, or the like. Each of the cells 721 is in communication with one of the first, second, third, fourth, and fifth interfaces 31, 32, 33, 34, and 35, respectively. Each interface may have at least one fluidic cell 721 in communication therewith. The cooling fluid may flow through the fluidic cell 721 to the interface corresponding to the fluidic cell 721. When two flow cells 721 are connected, the interfaces corresponding to the two flow cells 721 are also connected.

The valve element 71 is rotatably provided on the valve seat. The axis of rotation of the spool 71 may be parallel to the grid plate 72, and in other embodiments, the axis of rotation of the spool 71 may be perpendicular to the grid plate 72. The spool 71 is provided with a plurality of valve flaps 711 in the circumferential direction. When the valve core 71 rotates on the valve seat, different valve clacks 711 of the valve core 71 can be buckled with the grid plate 72 in turn, and when the valve clacks 711 are buckled with the grid plate 72, the valve clacks 711 and the grid plate 72 can be connected in a sealing way, the sealing connection can be realized by arranging a sealing ring on the grid plate 72, and through holes corresponding to the flow guide grids 721 are formed in the sealing ring for cooling liquid to pass through.

As shown in fig. 8, the valve core 71 may be provided with 4 valve clacks 711,4 with different structures, where the valve clacks 711 are distributed on the valve core 71 along the circumferential direction, and each valve clack 711 corresponds to one configuration of the multi-way valve 30, that is, each valve clack 711 can communicate with different flow guide lattices 721 on the grid plate 72 so as to change the connection structure of the pipeline, and in this embodiment, the valve core 71 may be cylindrical. As shown in fig. 9, two diversion trenches 7111 are disposed on the valve clack 711, each diversion trench 7111 can be buckled on two diversion trenches 721 to form a sealing flow channel, so that the corresponding interfaces of the two diversion trenches 721 are communicated, and the diversion trenches 721 at the corresponding positions can be closed at the positions on the valve clack 711 where the diversion trenches 7111 are not disposed. The different structures of the valve clack 711 are specifically shown in the number of the diversion trenches 7111, the positions where the diversion trenches 7111 are opened, and the extending directions of the diversion trenches 7111 are different. In the embodiment shown in fig. 9, the flow guiding groove 7111 connects two adjacent flow guiding grids 721, which can simplify the structure of the valve clack 711 and reduce the resistance of the coolant flowing in the multi-way valve 30, it is understood that in other embodiments, the flow guiding groove 7111 may have other structures to connect two non-adjacent flow guiding grids 721.

In some embodiments, the number of the flow cells 721 is 6, and two flow cells 721 of the 6 flow cells 721 are in communication with the first interface 31. In this embodiment, 6 flow cells 721 may be arranged in a 2×3 structure, and in this embodiment, the function of the multiway valve 30 may be implemented by a connection manner as shown in fig. 10. In fig. 10, numerals 1, 2, 3, 4, and 5 respectively represent positions of the cells 721 disposed on the 2×3 grid plate 72 corresponding to relative positional relationships among the numerals 1, 2, 3, 4, and 5, in which the cells 721 are communicated with the first interface 31, the second interface 32, the third interface 33, the fourth interface 34, and the fifth interface 35. In this embodiment, two flow guide lattices 721 of the 6 flow guide lattices 721 are communicated with the first interface 31, so that the design of the valve clack 711 can be simplified, and the design of complex flow channels to increase the flow resistance of the cooling liquid can be avoided.

In some embodiments, the battery coolant line 20 and the electric drive coolant line 10 are also provided with temperature sensors for measuring the coolant temperature in the line. Illustratively, the temperature sensors may include a first temperature sensor 61, a second temperature sensor 62, and a third temperature sensor 63, the first temperature sensor 61 being disposed at the inlet of the battery 21 of the battery coolant line 20, the second temperature sensor 62 being disposed at the outlet of the battery 21 of the battery coolant line 20, and the third temperature sensor 63 being disposed at the outlet of the electric drive system 11 of the electric drive coolant line 10. The temperature sensor may detect the temperature of its set position to determine whether the battery 21 needs to be heated or cooled, and whether the electric drive system 11 needs to be cooled or stored.

In some embodiments, the thermal management system further includes a liquid reservoir 40, the liquid reservoir 40 is used to supplement the battery coolant line 20 and the electric drive coolant line 10 with coolant, and the liquid reservoir 40 may be connected to the battery coolant line 20 and the electric drive coolant line 10, respectively. The water replenishing pipeline (the lower part of the liquid storage tank is connected with an external solid line) of the liquid storage tank 40 is generally arranged at the inlet of the water pump, namely in this example: a first pump 51 inlet, a second pump 52 inlet. The exhaust line of the liquid storage tank 40 (the upper part of the liquid storage tank is connected with an external dotted line) is usually connected with the inlet of the radiator 12, so as to realize system exhaust and increase the heat dissipation effect.

In some embodiments, one or more of the multi-way valve 30, the first pump 51, the second pump 52, the battery cooler 22, the reservoir 40, and the mounting bracket for mounting the above structures may be integrated as one module to save mounting space.

According to another aspect of the present application, embodiments of the present application also provide a vehicle including the thermal management system provided by any of the embodiments of the present application.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the application, and that, although the application has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the application as defined by the appended claims; the dimensions in the drawings and the embodiments are irrelevant to specific objects, are not used for limiting the protection scope of the application, and the objects can be selected and changed according to actual needs.

Claims (10)

1. A thermal management system, comprising:

an electric drive coolant line, a battery coolant line, and a multi-way valve;

The multi-way valve is provided with at least a first interface, a second interface, a third interface, a fourth interface and a fifth interface;

The electric cooling liquid pipeline is provided with an electric driving system, two ends of the electric cooling liquid pipeline are respectively connected with a first interface and a third interface, the electric cooling liquid pipeline further comprises a radiator branch, a radiator is arranged on the radiator branch, one end of the radiator branch is connected with a main pipeline between the electric driving system of the electric cooling liquid pipeline and the third interface, and the other end of the radiator branch is connected with the second interface;

The battery cooling liquid pipeline is provided with a battery and a battery cooler, and two ends of the battery cooling liquid pipeline are respectively connected with a fourth interface and a fifth interface; wherein,

The multi-way valve can be switched among a plurality of configurations, when the multi-way valve is in at least part of the configurations of the plurality of configurations, four interfaces of the first interface, the second interface, the third interface, the fourth interface and the fifth interface are communicated with each other, and the interfaces which are not communicated with other interfaces are closed, so that the electric drive cooling liquid pipeline and the battery cooling liquid pipeline can be operated in series under the condition that the radiator is connected and disconnected, and can be operated independently of each other under the condition that the radiator is connected and disconnected.

2. The thermal management system of claim 1, wherein,

The multiple configurations comprise a first configuration, when the multi-way valve is in the first configuration, the first interface is communicated with the second interface, the fourth interface is communicated with the fifth interface, and the third interface is closed, so that the electric drive cooling liquid pipeline and the battery cooling liquid pipeline can operate independently of each other under the condition that the radiator is connected.

3. The thermal management system of claim 1, wherein,

The plurality of configurations includes a second configuration, the first port and the fifth port are in communication, the third port and the fourth port are in communication, and the second port is closed such that the electrically driven coolant line and the battery coolant line are operable in series without the radiator being accessed when the multi-way valve is in the second configuration.

4. The thermal management system of claim 1, wherein,

The plurality of configurations includes a third configuration, when the multi-way valve is in the third configuration, the first port and the fifth port are in communication, the second port and the fourth port are in communication, and the third port is closed so that the electrically driven coolant line and the battery coolant line can be operated in series with the radiator connected.

5. The thermal management system of claim 1, wherein,

The multiple configurations include a fourth configuration, when the multi-way valve is in the fourth configuration, the first interface is communicated with the third interface, the fourth interface is communicated with the fifth interface, and the second interface is closed, so that the electric drive cooling liquid pipeline and the battery cooling liquid pipeline can operate independently of each other under the condition that the radiator is not connected.

6. The thermal management system of any of claims 1-5, wherein the multi-way valve comprises:

A valve seat;

The grid plate is arranged on the valve seat, a plurality of flow guide grids are arranged on the grid plate, and each flow guide grid is communicated with one of the first interface, the second interface, the third interface, the fourth interface and the fifth interface;

The valve comprises a valve core, wherein the valve core is rotatably arranged on a valve seat, a plurality of valve clacks are arranged on the valve core along the circumferential direction, two diversion grooves are arranged on at least part of the valve clacks, and each diversion groove can be buckled on two diversion grids to form a sealing flow passage so as to communicate corresponding interfaces of the two diversion grids.

7. The thermal management system of claim 6, wherein the number of fluid cells is 6, two of the 6 fluid cells being in communication with the first interface.

8. The thermal management system of any one of claims 1-5,

The battery cooling liquid pipeline is further provided with a heating piece, and the heating piece is used for heating cooling liquid in the battery cooling liquid pipeline.

9. The thermal management system of any one of claims 1-5,

The battery cooling liquid pipeline and the electric drive cooling liquid pipeline are further provided with temperature sensors, and the temperature sensors are used for measuring the temperature of cooling liquid in the pipeline.

10. A vehicle comprising a thermal management system according to any one of claims 1-9.