Thermal management waterway integration module, vehicle thermal management system and control method

Abstract

The invention relates to a heat management waterway integration module, a vehicle heat management system and a control method, the heat management waterway integration module is provided with a plurality of interfaces, and a runner plate is internally provided with a plurality of runners communicating with the corresponding interfaces; the six-way valve and the five-way valve are arranged on one side surface of the runner plate and are used for controlling the on-off of the corresponding runners; the battery water pump and the electric drive water pump are arranged on the other side face of the flow channel plate and used for driving media in the corresponding flow channels to flow to the corresponding connectors. Wherein the plurality of interfaces are provided with interfaces used for being connected with at least one or more of an electric drive cooling liquid loop, a battery cooling liquid loop and an air conditioner warm air cooling liquid loop, so that the pump, the valve and the heat exchanger are integrated, connecting pipelines among parts are reduced, the arrangement space is compact, the parts are reduced, and the arrangement complexity is reduced; the assembly time is reduced; switching and coupling of control modes can be carried out by controlling the six-way valve and the five-way valve, series-parallel connection of different loops is achieved, and different thermal management requirements are met.

Description

Technical Field

[0001] The present application relates to the field of thermal management of new energy vehicle models, and in particular to a thermal management water circuit integrated module, a vehicle thermal management system and a control method. Background Art

[0002] The thermal management system of new energy vehicles must not only meet the heating and cooling needs of the passenger compartment, but also manage the temperature of the power battery, drive motor, and various controllers. There are many components to be cooled / heated and the required temperatures are different. The existing thermal management system has separate and independent arrangements for the electric drive battery water pump, heat exchanger, etc., and is connected through multiple valves and pipes to form a thermal management cycle.

[0003] With the development of thermal management technology, it is necessary to coordinate the heat transfer between the battery, electric drive, passenger compartment and the external environment and improve the efficiency of integrated thermal management. Technologies such as heat pump air conditioning and electric drive / battery waste heat utilization are applied. Existing technologies achieve waste heat utilization by adding multiple heat exchangers and valves and switching circuits.

[0004] However, adding multiple heat exchangers and valves, and switching circuits to achieve waste heat utilization will make the layout plan cumbersome and require a large number of pipelines, ultimately resulting in a large system size and weight and complex assembly; it will also cause problems such as complex design and high cost. Summary of the invention

[0005] The embodiments of the present application provide a thermal management water circuit integrated module, a vehicle thermal management system and a control method to solve the problem in the related art that waste heat utilization is achieved by adding multiple heat exchangers and valves and switching circuits, resulting in large system size and weight, complex design and high cost.

[0006] In a first aspect, a thermal management water channel integrated module is provided, which includes: a flow channel plate, a battery water pump, an electric drive water pump, a six-way valve and a five-way valve;

[0007] The thermal management water channel integrated module is provided with a plurality of interfaces, and the flow channel plate is provided with a plurality of flow channels connected with the corresponding interfaces;

[0008] The six-way valve and the five-way valve are arranged on one side of the flow channel plate and are used to control the opening and closing of the corresponding flow channels; the battery water pump and the electric drive water pump are arranged on the other side of the flow channel plate and are used to drive the medium in the corresponding flow channel to flow to the corresponding interface;

[0009] Among them, the multiple interfaces include an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning warm air coolant circuit.

[0010] In some embodiments, the five-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, and a fifth valve port;

[0011] The interface includes a seventh interface and an eighth interface;

[0012] The second valve port of the five-way valve is led to the seventh interface through the corresponding flow channel, and the seventh interface is used to connect to the water outlet of the electric drive coolant circuit;

[0013] The first valve port of the five-way valve is led to the eighth interface through a corresponding flow channel, and the eighth interface is used to connect to the water inlet of the radiator.

[0014] In some embodiments, an electric drive coolant circuit water outlet water temperature sensor is provided on the flow channel between the second valve port and the seventh interface of the five-way valve, and the electric drive coolant circuit water outlet water temperature sensor is used to detect the electric drive coolant circuit water outlet temperature.

[0015] In some embodiments, the six-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, and a sixth valve port;

[0016] The interfaces include a first interface, a second interface, a third interface, a fourth interface, a fifth interface and a sixth interface;

[0017] The first valve port of the six-way valve is connected to the inlet of the battery water pump through the corresponding flow channel, and the outlet of the battery water pump is led to the first interface through the corresponding flow channel; the first interface is used to connect the inlet of the battery coolant circuit;

[0018] The second valve port of the six-way valve is led to the second interface through the corresponding flow channel, and the second interface is used to connect to the water outlet of the battery coolant circuit;

[0019] The third valve port of the six-way valve is led to the third interface through the corresponding flow channel, and the fourth valve port is led to the fourth interface through the corresponding flow channel;

[0020] The fifth valve port of the six-way valve is connected to the inlet of the electric drive water pump through the corresponding flow channel, and the outlet of the electric drive water pump is led to the fifth interface through the corresponding flow channel, and the fifth interface is used to connect to the inlet of the electric drive coolant circuit;

[0021] The sixth valve port of the six-way valve is led to the sixth interface through the corresponding flow channel, and is connected to the fifth valve port of the five-way valve in another way; the sixth interface is used to connect to the water outlet of the radiator.

[0022] In some embodiments, a battery coolant circuit outlet water temperature sensor is provided on the flow channel between the second valve port and the second interface of the six-way valve, and the battery coolant circuit outlet water temperature sensor is used to detect the inlet water temperature of the electric drive coolant circuit;

[0023] An electric drive water pump outlet water temperature sensor is provided on the flow channel between the water outlet of the electric drive water pump and the fifth interface, and the electric drive water pump outlet water temperature sensor is used to detect the outlet water temperature of the battery coolant circuit;

[0024] A cooler coolant outlet water temperature sensor is provided on the flow channel between the fourth valve port and the fourth interface of the six-way valve.

[0025] In some embodiments, the thermal management water circuit integrated module further includes a plate heat exchanger located on the same side as the six-way valve and the five-way valve, and the plate heat exchanger is used to guide the corresponding flow channel medium to the corresponding interface.

[0026] In some embodiments, the fourth valve port of the five-way valve is connected to the hot-side water outlet of the plate heat exchanger through a corresponding flow channel;

[0027] The third valve port of the five-way valve is communicated with the hot-side water inlet of the plate heat exchanger through a corresponding flow channel.

[0028] In some embodiments, the cold side water inlet of the plate heat exchanger is led to the ninth interface through the corresponding flow channel, and the ninth interface is used to connect to the water outlet of the air conditioner warm air coolant circuit;

[0029] The cold side water outlet of the plate heat exchanger is led to the tenth interface through the flow channel.

[0030] In some embodiments, an air conditioning warm air coolant circuit outlet water temperature sensor is provided on the flow channel between the cold test water inlet of the plate heat exchanger and the ninth interface, and the air conditioning warm air coolant circuit outlet water temperature sensor is used to detect the air conditioning warm air coolant circuit outlet temperature.

[0031] In a third aspect, a vehicle thermal management system is provided, comprising:

[0032] Thermal management water circuit integrated module;

[0033] A refrigerant circuit, wherein the coolant inlet of the cooler is connected to the third interface of the thermal management water circuit integrated module, and the coolant outlet of the cooler is connected to the fourth interface of the thermal management water circuit integrated module;

[0034] The electric drive coolant loop has a loop inlet connected to the fifth interface of the thermal management water circuit integrated module, and a loop outlet connected to the seventh interface;

[0035] A battery coolant loop, wherein the loop inlet is connected to the first interface, the first interface is connected to the water inlet of the battery coolant loop, and the battery coolant loop outlet is connected to the second interface;

[0036] The air conditioning warm air coolant loop, the loop water outlet is connected to the ninth interface, and the loop water inlet is connected to the tenth interface;

[0037] The radiator has a water inlet connected to the eighth interface and a water outlet connected to the sixth interface.

[0038] In a third aspect, a control method for a vehicle thermal management system is provided, which comprises the following steps:

[0039] Obtaining judgment information; the judgment information includes the vehicle's charging status, driving status, external ambient temperature, cab heating instruction information, battery temperature, and electric drive temperature;

[0040] Based on the judgment information, a control mode corresponding to the thermal management water circuit integration module is obtained;

[0041] The operation of the vehicle thermal management system is controlled according to the control mode.

[0042] In some embodiments, when the vehicle is stopped and in a charging state, the control mode is derived based on the ambient temperature and the battery temperature;

[0043] When the vehicle is in motion, the control mode is derived based on the external ambient temperature, battery temperature, electric drive temperature and cab heating command information.

[0044] In some embodiments, when the vehicle is stopped and in a charging state, a control mode is derived based on the ambient temperature and the battery temperature, including the following steps:

[0045] If the ambient temperature is greater than or equal to the normal temperature, and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is warm / high temperature fast charging-battery cooling, which corresponds to control mode 1;

[0046] If the ambient temperature is lower than the normal temperature, and the battery temperature is lower than the minimum value of the first design range, the working scenario is low-temperature fast charging-battery heating, which corresponds to control mode 2;

[0047] If the external environment temperature is lower than the normal temperature and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is low-temperature fast charging-low-temperature heat dissipation of the battery, which corresponds to control mode three.

[0048] In some embodiments, the control mode 1 is specifically: the battery water pump is turned on, the refrigerant circuit is running, the first valve port and the fourth valve port of the six-way valve are connected, and the second valve port and the third valve port are connected;

[0049] The control mode 2 is specifically as follows: the battery water pump is turned on, the battery coolant circuit is turned on, and the first valve port and the second valve port of the six-way valve are connected;

[0050] The control mode three is specifically as follows: the battery water pump and the electric drive water pump are turned on, and the radiator fan is turned on; the second valve port and the fifth valve port of the six-way valve are connected, and the first valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve are connected.

[0051] In some embodiments, when the vehicle is in a driving state, a control mode is derived based on the ambient temperature, the battery temperature, the electric drive temperature, and the cab heating instruction information, including the following steps:

[0052] If the ambient temperature is greater than or equal to the normal temperature, the battery temperature is greater than or equal to the maximum value of the first design range, and the electric drive temperature is greater than or equal to the maximum value of the second design range, then the working scenario is normal temperature / high temperature driving-battery cooling, electric drive cooling, and this working scenario corresponds to control mode 4;

[0053] If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the maximum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving-electric drive cooling, which corresponds to control mode five;

[0054] If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is lower than the minimum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving - battery heating, electric drive heat storage, and this working scenario corresponds to control mode six;

[0055] If the external ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and no cab heating command is received, then the working scenario is low-temperature driving - battery heating, electric drive waste heat utilization, and this working scenario corresponds to control mode seven.

[0056] In some embodiments, the control mode 4 is specifically as follows: the battery water pump and the electric drive water pump are turned on, the refrigerant circuit is running, and the radiator fan is turned on; the second valve port and the third valve port of the six-way valve are connected, the first valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve are connected;

[0057] The control mode five is specifically: the electric drive water pump is turned on, the radiator fan is turned on; the fifth valve port and the sixth valve port of the six-way valve are connected; the first valve port and the second valve port of the five-way valve are connected;

[0058] The control mode six is ​​specifically as follows: the battery water pump and the electric drive water pump are turned on, and the battery coolant circuit is turned on; the second valve port of the six-way valve is connected to the first valve port, and the fifth valve port is connected to the sixth valve port; the fifth valve port of the five-way valve is connected to the second valve port; the fifth valve port of the five-way valve is connected to the sixth valve port of the six-way valve;

[0059] The control mode seven is specifically as follows: the battery water pump and the electric drive water pump are turned on, and the refrigerant circuit is running; the second valve port and the third valve port of the six-way valve are connected, the first valve port and the sixth valve port are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve are connected.

[0060] In some embodiments, when the vehicle is in a driving state, the control mode is derived based on the ambient temperature, the battery temperature, the electric drive temperature and the cabin heating instruction information, and further includes the following steps:

[0061] If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the working scenario is low-temperature driving-cabin heating, electric drive waste heat utilization, and this working scenario corresponds to control mode eight;

[0062] If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the control modes corresponding to the working scenario include control mode nine, control mode ten, and control mode eleven;

[0063] If the external ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating command is received, the control modes corresponding to the working scenarios include control mode twelve and control mode thirteen.

[0064] In some embodiments, the control mode eight is specifically as follows: the electric drive water pump is turned on, the air conditioning warm air coolant circuit is turned on; the fifth valve port and the sixth valve port of the six-way valve are connected; the fifth valve port and the fourth valve port of the five-way valve are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve is connected to the sixth valve port of the six-way valve;

[0065] The control mode nine is specifically as follows: the battery water pump and the electric drive water pump are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the second valve port and the third valve port of the six-way valve are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the fifth valve port and the fourth valve port of the five-way valve are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve is connected to the sixth valve port of the six-way valve;

[0066] The control mode ten is specifically as follows: the battery water pump and the electric drive water pump are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port of the six-way valve is connected to the second valve port, the fourth valve port is connected to the fifth valve port, and the first valve port is connected to the sixth valve port; the fifth valve port of the five-way valve is connected to the second valve port; the fifth valve port of the five-way valve is connected to the sixth valve port of the six-way valve;

[0067] The control mode eleven is specifically as follows: the battery water pump and the electric drive water pump are turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the second valve port of the six-way valve are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve are connected;

[0068] The control mode 12 is specifically as follows: the electric drive water pump is turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port and the sixth valve port of the six-way valve are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve are connected, and the fifth valve port of the five-way valve is connected to the sixth valve port of the six-way valve;

[0069] The control mode thirteen is specifically as follows: the electric water pump is turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the sixth valve port of the six-way valve are connected, and the fourth valve port and the fifth valve port are connected; the first valve port and the second valve port of the five-way valve are connected.

[0070] The beneficial effects of the technical solution provided by this application include:

[0071] The embodiment of the present application provides a thermal management water circuit integrated module, a vehicle thermal management system and a control method. The thermal management water circuit integrated module includes a flow channel plate, a battery water pump, an electric drive water pump, a six-way valve and a five-way valve; a plurality of interfaces are arranged on the thermal management water circuit integrated module, and a plurality of flow channels connected to the corresponding interfaces are arranged in the flow channel plate; the six-way valve and the five-way valve are arranged on one side of the flow channel plate, and are used to control the on and off of the corresponding flow channels; the battery water pump and the electric drive water pump are arranged on the other side of the flow channel plate, and are used to drive the medium in the corresponding flow channel to flow to the corresponding interface; wherein, among the plurality of interfaces, there is an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning warm air coolant circuit, the above structure integrates the pump and the valve into one, reduces the connecting pipelines between the components, has a compact layout space, and has a small number of assembled components, which greatly reduces the complexity of the layout and reduces the assembly time; by controlling the six-way valve and the five-way valve, the control mode can be switched and coupled to realize the series and parallel connection of different circuits to meet different thermal management requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0073] Figure 1A front view of a thermal management water channel integrated module provided in an embodiment of the present application;

[0074] Figure 2 A rear view of the thermal management water channel integrated module provided in an embodiment of the present application;

[0075] Figure 3 A schematic diagram of interfaces in a front view of a thermal management water channel integrated module provided in an embodiment of the present application;

[0076] Figure 4 A schematic diagram of interfaces in a rear view of a thermal management water channel integrated module provided in an embodiment of the present application;

[0077] Figure 5 A schematic diagram of the principle of a waterway integration module provided in an embodiment of the present application;

[0078] Figure 6 A conduction principle diagram of control mode 1 provided in an embodiment of the present application;

[0079] Figure 7 A conduction principle diagram of control mode 2 provided in an embodiment of the present application;

[0080] Figure 8 A conduction principle diagram of control mode three provided in an embodiment of the present application;

[0081] Fig. 9 A conduction principle diagram of control mode 4 provided in an embodiment of the present application;

[0082] Fig.10 A conduction principle diagram of control mode 5 provided in an embodiment of the present application;

[0083] Fig.11 A conduction principle diagram of control mode 6 provided in an embodiment of the present application;

[0084] Fig.12 A conduction principle diagram of control mode seven provided in an embodiment of the present application;

[0085] Fig.13 A conduction principle diagram of control mode eight provided in an embodiment of the present application;

[0086] Fig.14 A conduction principle diagram of control mode nine provided in an embodiment of the present application;

[0087] Fig.15 A conduction principle diagram of control mode 10 provided in an embodiment of the present application;

[0088] Fig.16 A conduction principle diagram of control mode 11 provided in an embodiment of the present application;

[0089] Fig.17A conduction principle diagram of control mode 12 provided in an embodiment of the present application;

[0090] Fig.18 This is a conduction principle diagram of control mode thirteen provided in an embodiment of the present application.

[0091] In the figure: 100, flow channel plate; 200, battery water pump; 300, electric drive water pump; 400, six-way valve; 500, five-way valve; 600, plate heat exchanger; 700, eighth interface; 800, sixth interface; 900, seventh interface; 1000, fifth interface; 1100, second interface; 1200, first interface; 1300, third interface; 1400, fourth interface; 1500, tenth interface; 1600, ninth interface; T1, electric drive water pump outlet water temperature sensor; T2, electric drive coolant circuit outlet water temperature sensor; T3, PTC outlet water temperature sensor; T4, battery coolant circuit outlet water temperature sensor; T5, cooler coolant outlet water temperature sensor; T6, air conditioner warm air coolant circuit outlet water temperature sensor. DETAILED DESCRIPTION

[0092] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0093] The existing thermal management system components are scattered and connected through multiple valves and pipelines. The layout is complicated, the number of pipelines is large, the design is complex, the system is large in size and weight, the assembly is complex, and the cost is high.

[0094] The existing technology realizes waste heat utilization by adding multiple heat exchangers and valves and switching circuits. There are many valves, high system cost, difficult layout, poor heat exchange efficiency and low energy utilization.

[0095] When considering the positioning of vehicle models, user groups, and mileage targets, and configuring thermal management systems with different functions, existing technologies require different system architectures. There are many types of system architectures, and management and control are complicated, which consumes a lot of man-hours and is costly.

[0096] Therefore, the embodiments of the present application provide a thermal management water circuit integrated module, a vehicle thermal management system and a control method to solve the problem in the related art that waste heat utilization is achieved by adding multiple heat exchangers and valves and switching circuits, resulting in large system size and weight, complex design and high cost.

[0097] First, see Figure 1-Figure 5 , a thermal management water channel integrated module, comprising: a flow channel plate 100, a battery water pump 200, an electric drive water pump 300, a six-way valve 400 and a five-way valve 500;

[0098] The thermal management water channel integrated module is provided with a plurality of interfaces, and the flow channel plate 100 is provided with a plurality of flow channels connected to the corresponding interfaces;

[0099] The six-way valve 400 and the five-way valve 500 are arranged on one side of the flow channel plate 100 and are used to control the opening and closing of the corresponding flow channels; the battery water pump 200 and the electric drive water pump 300 are arranged on the other side of the flow channel plate 100 and are used to drive the medium in the corresponding flow channel to flow to the corresponding interface;

[0100] Among them, the multiple interfaces include an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning warm air coolant circuit.

[0101] The above structure integrates the pump, valve and heat exchanger into one, reduces the connecting pipes between components, makes the layout space compact, and reduces the number of assembled components, which greatly reduces the complexity of the layout and reduces the assembly time. By controlling the six-way valve 400 and the five-way valve 500, the control mode can be switched and coupled to realize the series and parallel connection of different circuits to meet different thermal management requirements.

[0102] The main components of the thermal management system water circuit, such as pumps and valves, will be integrated into one, reducing the connecting pipes between components, making the layout space compact and the number of assembled parts small, which greatly reduces the complexity of the layout and reduces the assembly time.

[0103] Multiple three-way valves and four-way valves have been cancelled. Through a six-way valve and a five-way valve, in combination with a control method, low-temperature heat dissipation of the battery, heating of the battery with motor waste heat, heating of the cab with motor waste heat, and heating of the cab with motor battery waste heat are achieved, maximizing the utilization of waste heat and reducing the power consumption of the thermal management system. The water circuit integration module is universal for pure electric vehicle integrated thermal management system heat pump, non-heat pump, waste heat utilization and other architectures, with high versatility, shortening the development cycle of the platform thermal management system, and reducing the quantified cost of parts. The effects of maximizing waste heat utilization, reducing the power consumption of the thermal management system, and high versatility will be introduced in detail in the control method introduced later. The five valve ports of the five-way valve are represented by the numbers 1, 2, 3, 4, and 5 respectively; the six valve ports of the six-way valve are represented by the numbers 1, 2, 3, 4, 5, and 6 respectively.

[0104] In some preferred embodiments, the five-way valve 500 and the corresponding interface are described as follows:

[0105] The five-way valve 500 includes a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port; the interface includes a seventh interface 900 and an eighth interface 700;

[0106] The second valve port of the five-way valve 500 is led to the seventh interface 900 through a corresponding flow channel, and the seventh interface 900 is used to connect to the water outlet of the electric drive coolant circuit;

[0107] The first valve port of the five-way valve 500 is led to the eighth interface 700 through a corresponding flow channel, and the eighth interface 700 is used to connect to the water inlet of the radiator.

[0108] refer to Figure 5 Furthermore, in order to enhance the integration effect, sensors are also integrated. An electric drive coolant circuit outlet water temperature sensor T2 is provided on the flow channel between the second valve port of the five-way valve 500 and the seventh interface 900. The electric drive coolant circuit outlet water temperature sensor T2 is used to detect the outlet water temperature of the electric drive coolant circuit.

[0109] In some preferred embodiments, the five-way and six-way valves 400 and the corresponding interfaces, as well as the connection relationship with the five-way valve 500 are described as follows:

[0110] The six-way valve 400 includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port and a sixth valve port;

[0111] The interface includes a first interface 1200, a second interface 1100, a third interface 1300, a fourth interface 1400, a fifth interface 1000 and a sixth interface 800;

[0112] The first valve port of the six-way valve 400 is connected to the inlet of the battery water pump 200 through the corresponding flow channel, and the outlet of the battery water pump 200 is led to the first interface 1200 through the corresponding flow channel; the first interface 1200 is used to connect the inlet of the battery coolant circuit;

[0113] The second valve port of the six-way valve 400 is led to the second interface 1100 through a corresponding flow channel, and the second interface 1100 is used to connect to the water outlet of the battery coolant circuit;

[0114] The third valve port of the six-way valve 400 is led to the third interface 1300 through the corresponding flow channel, and the fourth valve port is led to the fourth interface 1400 through the corresponding flow channel;

[0115] The fifth valve port of the six-way valve 400 is connected to the inlet of the electric drive water pump 300 through the corresponding flow channel, and the outlet of the electric drive water pump 300 is led to the fifth interface 1000 through the corresponding flow channel. The fifth interface 1000 is used to connect to the inlet of the electric drive coolant circuit;

[0116] The sixth valve port of the six-way valve 400 is led to the sixth interface 800 through the corresponding flow channel, and is connected to the fifth valve port of the five-way valve 500 in another way; the sixth interface 800 is used to connect to the water outlet of the radiator.

[0117] refer to Figure 5, further, in order to enhance the integration effect, the sensor is also integrated. A battery coolant circuit outlet water temperature sensor T4 is provided on the flow channel between the second valve port of the six-way valve 400 and the second interface 1100. The battery coolant circuit outlet water temperature sensor T4 is used to detect the inlet water temperature of the electric drive coolant circuit;

[0118] An electric drive water pump outlet water temperature sensor T1 is provided on the flow channel between the water outlet of the electric drive water pump 300 and the fifth interface 1000. The electric drive water pump outlet water temperature sensor T1 is used to detect the outlet water temperature of the battery coolant circuit;

[0119] A cooler coolant outlet water temperature sensor T5 is provided on the flow channel between the fourth valve port of the six-way valve 400 and the fourth interface 1400 .

[0120] refer to Figure 5 In some preferred embodiments, the heat exchanger is also integrated, specifically:

[0121] The thermal management water channel integrated module further includes a plate heat exchanger 600 located on the same side as the six-way valve 400 and the five-way valve 500 . The plate heat exchanger 600 is used to guide the corresponding flow channel medium to the corresponding interface.

[0122] Among them, the connection between the plate heat exchanger 600 and the five-way valve 500 is as follows: the fourth valve port of the five-way valve 500 is connected to the hot side water outlet of the plate heat exchanger 600 through the corresponding flow channel; the third valve port of the five-way valve 500 is connected to the hot side water inlet of the plate heat exchanger 600 through the corresponding flow channel.

[0123] Among them, the connection form between the plate heat exchanger 600 and the interface is: the cold side water inlet of the plate heat exchanger 600 is led to the ninth interface 1600 through the corresponding flow channel, and the ninth interface 1600 is used to connect the air conditioning warm air coolant circuit outlet; the cold side water outlet of the plate heat exchanger 600 is led to the tenth interface 1500 through the flow channel.

[0124] Of course, in order to enhance the integration effect and reduce piping, an air conditioning warm air coolant circuit outlet water temperature sensor T6 is provided on the flow channel between the cold test water inlet of the plate heat exchanger 600 and the ninth interface 1600. The air conditioning warm air coolant circuit outlet water temperature sensor T6 is used to detect the air conditioning warm air coolant circuit outlet temperature.

[0125] The above describes the interface of the thermal management water circuit integrated module and the connection form of each component. The degree of integration of the above embodiments is as follows: pump, valve---pump, valve, sensor---pump, valve, sensor, heat exchanger.

[0126] This integrates the main components of the thermal management system water circuit, integrating the pump, valve, heat exchanger, water temperature sensor, etc. into one, reducing the connecting pipes between components, making the layout space compact, and reducing the number of assembled parts, greatly reducing the complexity of the layout and reducing assembly time.

[0127] Reference Figure 5 In a second aspect, a vehicle thermal management system is provided, comprising:

[0128] Thermal management water circuit integrated module;

[0129] A refrigerant circuit, wherein the coolant inlet of the cooler is connected to the third interface 1300 of the thermal management water circuit integrated module, and the coolant outlet of the cooler is connected to the fourth interface 1400 of the thermal management water circuit integrated module;

[0130] The electric drive coolant loop has a loop inlet connected to the fifth interface 1000 of the thermal management water circuit integrated module, and a loop outlet connected to the seventh interface 900;

[0131] The battery coolant loop has a loop inlet connected to the first interface 1200, the first interface 1200 is connected to the water inlet of the PTC of the battery coolant loop, and the battery coolant loop outlet is connected to the second interface 1100; a PTC water outlet water temperature sensor T3 is provided between the battery and the PTC of the battery coolant loop;

[0132] The air conditioning warm air coolant loop, whose loop water outlet is connected to the ninth interface 1600, and the loop water inlet is connected to the tenth interface 1500;

[0133] The radiator has a water inlet connected to the eighth interface 700 and a water outlet connected to the sixth interface 800 .

[0134] Attached Figure 5 In the above, chiller is a cooler, and the refrigerant circuit is used as a refrigerant flow circuit for battery cooling, air conditioning and battery cooling integration to provide cooling capacity. Figure 5 The motor coolant circuit is also the electric drive coolant circuit. The same is true in the following figures.

[0135] By eliminating multiple three-way valves and four-way valves, pumps, valves, heat exchangers, water temperature sensors, etc. are integrated into one, and then a control method can be used to achieve low-temperature heat dissipation of batteries, heating of batteries with motor waste heat, heating of the cab with motor waste heat, and heating of the cab with motor battery waste heat, thereby maximizing waste heat utilization and reducing power consumption of the thermal management system. That is, by switching and coupling different control modes of the five-way valve 500 and the six-way valve 400, series and parallel connection of different circuits can be achieved, thereby achieving functions such as electric drive heat dissipation, battery cooling and heating, battery low-temperature heat dissipation, heating of batteries with motor waste heat, heating of the cab with motor waste heat, and heating of the cab with motor battery waste heat. It is commonly used in thermal management system architectures such as heat pumps, non-heat pumps, and waste heat utilization.

[0136] In a third aspect, a control method for a vehicle thermal management system is provided, which comprises the following steps:

[0137] Step 100, obtaining judgment information; the judgment information includes the vehicle's charging state, driving state, external environment temperature, cab heating instruction information, battery temperature and electric drive temperature;

[0138] Step 101: deriving a control mode corresponding to a thermal management water circuit integration module based on the judgment information;

[0139] Step 102: Control the operation of the vehicle thermal management system according to the control mode.

[0140] Wherein, in step 101, when the vehicle is in a stopped state and in a charging state, a control mode is obtained based on the external environment temperature and the battery temperature;

[0141] When the vehicle is in motion, the control mode is derived based on the external ambient temperature, battery temperature, electric drive temperature and cab heating command information.

[0142] In some preferred embodiments, when the vehicle is in a stopped state and in a charging state, a control mode is derived based on the ambient temperature and the battery temperature, including the following steps:

[0143] If the ambient temperature is greater than or equal to the normal temperature, and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is warm / high temperature fast charging-battery cooling, which corresponds to control mode 1;

[0144] If the ambient temperature is lower than the normal temperature, and the battery temperature is lower than the minimum value of the first design range, the working scenario is low-temperature fast charging-battery heating, which corresponds to control mode 2;

[0145] If the external environment temperature is lower than the normal temperature and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is low-temperature fast charging-low-temperature heat dissipation of the battery, which corresponds to control mode three.

[0146] Among them, control mode 1 is specifically: the battery water pump 200 is turned on, the refrigerant circuit is running, the first valve port and the fourth valve port of the six-way valve 400 are connected, and the second valve port and the third valve port are connected; application scenarios are: normal temperature / high temperature fast charging-battery cooling

[0147] In this scenario, the battery needs to be cooled and the electric drive does not need to dissipate heat. The six-way valve 400 is controlled to be turned on in the above manner, the battery water pump 200 is turned on, the refrigerant circuit is started, and the independent circuit battery coolant is cooled to the required temperature through the chiller to cool the battery. Figure 6 .

[0148] Control mode 2 is as follows: the battery water pump 200 is turned on, the PTC of the battery coolant circuit is turned on, and the first valve port and the second valve port of the six-way valve 400 are connected; application scenario: low temperature fast charging-battery heating

[0149] In this scenario, the battery needs to be heated and the electric drive does not need to dissipate heat. The six-way valve 400 is controlled to be turned on in the above manner, the battery water pump 200 is turned on, and the PTC is turned on to heat the battery coolant to the required temperature to heat the battery. The system conduction principle diagram is shown in the figure below. Figure 7 .

[0150] Control mode three is as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, and the radiator fan is turned on; the second valve port and the fifth valve port of the six-way valve 400 are connected, and the first valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve 500 are connected. Application scenarios: low temperature fast charging - low temperature heat dissipation of batteries

[0151] In this scenario, the battery needs to be cooled, but the electric drive does not need to dissipate heat. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner, and the battery coolant circuit is connected in series with the electric drive coolant circuit. The battery water pump 200 and the electric drive water pump 300 are turned on, and the radiator fan is turned on. The coolant in the electric drive battery series circuit is cooled to the required temperature through the radiator to dissipate heat for the battery. The system conduction principle diagram is shown in the figure below. Figure 8 This control mode is also suitable for low-temperature driving, when the battery needs to be cooled and the electric drive needs to dissipate heat. In this control mode, the radiator is used to cool the battery, and there is no need to start the refrigerant circuit, making the system more energy-efficient.

[0152] In some preferred embodiments, when the vehicle is in a driving state, a control mode is derived based on the ambient temperature, the battery temperature, the electric drive temperature and the cab heating instruction information, including the following steps:

[0153] If the ambient temperature is greater than or equal to the normal temperature, the battery temperature is greater than or equal to the maximum value of the first design range, the electric drive temperature is greater than or equal to the maximum value of the second design range, and no cab heating command is received, the working scenario is normal temperature / high temperature driving-battery cooling, electric drive cooling, and this working scenario corresponds to control mode 4;

[0154] If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the maximum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving-electric drive cooling, which corresponds to control mode five;

[0155] If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is lower than the minimum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving - battery heating, electric drive heat storage, and this working scenario corresponds to control mode six;

[0156] If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and no cab heating command is received, the working scenario is low-temperature driving-battery heating, electric drive waste heat utilization, and this working scenario corresponds to control mode seven;

[0157] The control mode is derived based on the ambient temperature, the battery temperature, the electric drive temperature and the cab heating command information, and further includes the following steps:

[0158] If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the working scenario is low-temperature driving-cabin heating, electric drive waste heat utilization, and this working scenario corresponds to control mode eight;

[0159] If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the control modes corresponding to the working scenario include control mode nine, control mode ten, and control mode eleven;

[0160] If the external ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating command is received, the control modes corresponding to the working scenarios include control mode twelve and control mode thirteen.

[0161] Among them, combined with Figure 9-18 , the control strategy of the control mode is described in detail, as follows:

[0162] Control mode 4 is specifically as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, the refrigerant circuit is running, and the radiator fan is turned on; the second valve port and the third valve port of the six-way valve 400 are connected, the first valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve 500 are connected;

[0163] Application scenarios: Normal temperature / high temperature driving-battery cooling, electric drive cooling

[0164] In this scenario, the battery needs to be cooled and the electric drive needs to dissipate heat. The six-way valve 400 and the five-way valve 500 are controlled to be connected in the above manner. The battery coolant circuit and the electric drive coolant circuit are independent of each other. The battery water pump 200 is turned on, the refrigerant circuit is started, and the battery coolant is cooled to the required temperature through the chiller to cool the battery. The electric drive water pump 300 is turned on, the radiator fan is turned on, and the electric drive circuit coolant is cooled to the required temperature through the radiator to dissipate heat for the electric drive. The system conduction schematic diagram is shown in the figure. Fig. 9 .

[0165] Control mode five is specifically as follows: the electric water pump 300 is turned on, the radiator fan is turned on; the fifth valve port and the sixth valve port of the six-way valve 400 are connected; the first valve port and the second valve port of the five-way valve 500 are connected;

[0166] Application scenario: Low temperature driving-electric drive cooling

[0167] In this scenario, the battery does not need to be cooled, and the electric drive dissipates heat. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The electric drive water pump 300 is turned on, the radiator fan is turned on, and the electric drive coolant is cooled to the required temperature through the radiator to dissipate heat for the electric drive. The system conduction principle diagram is shown in the figure below. Fig.10 .

[0168] Control mode six is ​​specifically as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, and the PTC of the battery coolant circuit is turned on; the second valve port of the six-way valve 400 is connected to the first valve port, and the fifth valve port is connected to the sixth valve port; the fifth valve port of the five-way valve 500 is connected to the second valve port; the fifth valve port of the five-way valve 500 is connected to the sixth valve port of the six-way valve 400; application scenarios: low temperature driving-battery heating, electric drive heat storage;

[0169] In this scenario, the battery needs to be heated and the electric drive needs to store heat. The six-way valve 400 and the five-way valve 500 are controlled to be connected in the above manner. The battery coolant circuit and the electric drive coolant circuit are independent of each other. The battery water pump 200 is turned on, and the PTC is turned on to heat the battery coolant to the required temperature to heat the battery. The electric drive water pump 300 is turned on, and the drive motor and controller heat the electric drive circuit coolant. The electric drive circuit stores heat. When the electric drive coolant is heated to a certain temperature, it can heat the battery or the cab. The system conduction schematic diagram is shown below. Fig.11 .

[0170] Control mode seven is specifically as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, and the refrigerant circuit is running; the second valve port and the third valve port of the six-way valve 400 are connected, the first valve port and the sixth valve port are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve 500 are connected; application scenarios are: low-temperature driving-battery heating, electric drive waste heat utilization;

[0171] In this scenario, the battery needs to be heated and the electric drive needs to dissipate heat. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner, and the battery coolant circuit is connected in series with the electric drive coolant circuit. The battery water pump 200 and the electric drive water pump 300 are turned on, the drive motor and the controller heat the coolant, and the heated coolant heats the battery. When the heat dissipation of the drive motor and the controller is large enough, the PTC may not be turned on; when the heat dissipation of the drive motor and the controller is not enough to meet the battery heating demand, the PTC is turned on at a low power to supplement the heating required for the battery. The system conduction schematic diagram is shown below. Fig.12 This control mode uses the waste heat of the electric drive to heat the battery, realizing the utilization of the waste heat of the electric drive, effectively reducing the PTC power and saving more energy.

[0172] Control mode eight is specifically as follows: the electric drive water pump 300 is turned on, and the air conditioning warm air coolant circuit is turned on; the fifth valve port and the sixth valve port of the six-way valve 400 are connected; the fifth valve port and the fourth valve port of the five-way valve 500 are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve 500 is connected to the sixth valve port of the six-way valve 400; application scenarios are: low-temperature driving-cabin heating, electric drive waste heat utilization.

[0173] In this scenario, the electric drive needs to dissipate heat and the cab needs to be heated, so the six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The air conditioning heater circuit is turned on, and the warm water flows through the plate heat exchanger; the electric drive water pump 300 is turned on, and the drive motor and controller heat the coolant, and the heated coolant is heated by the plate heat exchanger to heat the warm water. When the heat dissipation of the drive motor and the controller is large enough, the air conditioning heater PTC may not be turned on; when the heat dissipation of the drive motor and the controller is not enough to meet the battery heating demand, the air conditioning heater PTC is turned on at a low power to supplement the heating required for the cab. The system conduction schematic diagram is shown below. Fig.13 This control mode uses the waste heat from the electric drive to heat the cab, realizing the utilization of waste heat from the electric drive, effectively reducing the PTC power of the air conditioner heater, and being more energy-efficient.

[0174] Control mode nine is specifically as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the second valve port and the third valve port of the six-way valve 400 are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the fifth valve port and the fourth valve port of the five-way valve 500 are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve 500 is connected to the sixth valve port of the six-way valve 400;

[0175] Application scenarios: low temperature driving - battery heating, electric drive waste heat utilization, cab heating

[0176] In this scenario, the battery needs to be heated, the electric drive needs to be cooled, and the cab needs to be heated. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The air conditioning warm air circuit is turned on, and the warm air flows through the plate exchanger; the electric drive water pump 300 and the battery water pump 200 are turned on, and the drive motor and controller heat the coolant, and the heated coolant heats the cab and the battery. When the heat dissipation of the drive motor and the controller is large enough, the cab PTC and the battery PTC may not be turned on; when the heat dissipation of the drive motor and the controller is not enough to meet the heating demand, the PTC is turned on at a low power to supplement the heating required for the cab and the battery. The system conduction schematic diagram is shown below. Fig.14 This control mode uses the waste heat from the electric drive to heat the cab and battery, realizing waste heat utilization from the electric drive, effectively reducing PTC power and saving more energy.

[0177] Control mode ten is specifically as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port and the second valve port of the six-way valve 400 are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the fifth valve port and the second valve port of the five-way valve 500 are connected; the fifth valve port of the five-way valve 500 is connected to the sixth valve port of the six-way valve 400;

[0178] Application scenarios: low temperature driving-battery heating, cab heating, electric drive water source heat pump

[0179] In this scenario, the electric drive needs to dissipate heat, heat the battery, and heat the cab. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner, the electric drive water pump 300 and the battery water pump 200 are turned on, the motor and the controller heat the coolant, and the heated coolant heats the battery and then flows through the chiller. The air conditioning warm air circuit is turned on, and the refrigerant circuit starts the water source heat pump mode, absorbing the heat from the motor and controller from the chiller and transferring it to the air conditioning warm air circuit. When the heat absorbed from the chiller is large enough, the cab PTC may not be turned on; when the heat absorbed from the chiller is not enough to meet the heating demand, the PTC is turned on at a low power to supplement the heating required for the cab. The system conduction schematic diagram is shown below. Fig.15 This control mode is the electric drive water source heat pump mode, which uses the waste heat of the electric drive to heat the battery and the cab. The battery PTC is not started, and the cab PTC is not turned on or turned on at low power, which is more energy-efficient.

[0180] Control mode 11 is as follows: the battery water pump 200 and the electric drive water pump 300 are turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the second valve port of the six-way valve 400 are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve 500 are connected; application scenarios are: low temperature driving-battery heating, cab heating, electric drive water source heat pump

[0181] In this scenario, the electric drive needs to dissipate heat, heat the battery, and heat the cab. The six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The electric drive water pump 300 and the battery water pump 200 are turned on, the radiator fan is turned on, the motor and the controller heat the coolant, and the heated coolant dissipates part of the heat through the radiator to heat the battery, and then flows through the chiller. The air conditioning warm air circuit is turned on, and the refrigerant circuit starts the water source heat pump mode, absorbing the heat of the motor and controller from the chiller and transferring it to the air conditioning warm air circuit. The battery PTC and the cab PTC are not turned on, and the waste heat of the electric drive is used to heat the battery and the cab. The system conduction schematic diagram is shown below. Fig.16 This control mode is the electric drive water source heat pump mode, which uses the waste heat from the electric drive to heat the battery and the cab. The battery PTC and cab PTC are not started, which is more energy-efficient.

[0182] Control mode 12 is specifically as follows: the electric water pump 300 is turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port and the sixth valve port of the six-way valve 400 are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve 500 are connected, and the fifth valve port of the five-way valve 500 is connected to the sixth valve port of the six-way valve 400; application scenarios: low temperature driving-cabin heating, electric water source heat pump

[0183] In this scenario, the electric drive needs to dissipate heat and the cab needs to be heated, so the six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The electric drive water pump 300 is turned on, and the motor and controller heat the coolant, and the heated coolant flows through the chiller. The air conditioning warm air circuit is turned on, and the refrigerant circuit starts the water source heat pump mode, absorbing the heat of the motor and controller from the chiller and transferring it to the air conditioning warm air circuit. When the heat dissipation of the drive motor and controller is large enough, the PTC in the cab may not be turned on; when the heat dissipation of the drive motor and controller is not enough to meet the heating demand, the PTC is turned on at a low power to supplement the heating required for the cab. The system conduction schematic diagram is shown below. Fig.17 This control mode is the electric drive water source heat pump mode, which uses the waste heat of the electric drive to heat the cab, effectively reducing the PTC power and saving more energy.

[0184] Control mode thirteen is as follows: the electric drive water pump 300 is turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the sixth valve port of the six-way valve 400 are connected, and the fourth valve port and the fifth valve port are connected; the first valve port and the second valve port of the five-way valve 500 are connected. Application scenarios: low temperature driving-cabin heating, electric drive water source heat pump;

[0185] In this scenario, the electric drive needs to dissipate heat and the cab needs to be heated. The electric drive can use waste heat that is greater than the heating demand of the cab, and the six-way valve 400 and the five-way valve 500 are controlled to be turned on in the above manner. The electric drive water pump 300 is turned on, the radiator fan is turned on, the motor and the controller heat the coolant, and the heated coolant flows through the chiller after dissipating some heat through the radiator. The air conditioning warm air circuit is turned on, and the refrigerant circuit starts the water source heat pump mode, absorbing the heat from the motor and controller from the chiller and transferring it to the air conditioning warm air circuit. The cab PTC is not turned on, and the electric drive waste heat is used to heat the cab. The system conduction schematic diagram is shown below. Fig.18 This control mode is the electric drive water source heat pump mode, which uses the waste heat of the electric drive to heat the cab. The PTC does not need to be turned on, which is more energy-efficient.

[0186] For the thermal management system of the present application, the heat pump system architecture can use the control modes of the above control mode 1 to control mode 13.

[0187] The non-heat pump with waste heat utilization system architecture can use the above control modes from control mode 1 to control mode 9.

[0188] The non-heat pump system architecture without waste heat utilization can use the control modes of the above control mode 1 to control mode 5.

[0189] The present application provides a universal pure electric integrated thermal management water circuit integrated module and control method. The universal pure electric vehicle integrated thermal management system heat pump, non-heat pump, waste heat utilization and other architectures are highly versatile, shortening the development cycle of the platform thermal management system and reducing the quantified cost of parts. By integrating the main components of the integrated thermal management system water circuit, such as pumps, valves, heat exchangers, water temperature sensors, etc., the connecting pipes between components are reduced, the layout space is compact, and the number of assembled parts is small, which greatly reduces the complexity of the layout and reduces the assembly time.

[0190] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0191] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0192] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A thermal management water channel integrated module, characterized in that: It comprises: a flow channel plate (100), a battery water pump (200), an electric drive water pump (300), a six-way valve (400) and a five-way valve (500); The thermal management water channel integrated module is provided with a plurality of interfaces, and the flow channel plate (100) is provided with a plurality of flow channels connected to the corresponding interfaces; The six-way valve (400) and the five-way valve (500) are arranged on one side of the flow channel plate (100) and are used to control the opening and closing of the corresponding flow channels; the battery water pump (200) and the electric drive water pump (300) are arranged on the other side of the flow channel plate (100) and are used to drive the medium in the corresponding flow channel to flow to the corresponding interface; Among them, the multiple interfaces include an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning warm air coolant circuit.

2. The thermal management water channel integrated module according to claim 1, characterized in that: The five-way valve (500) comprises a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port; The interface comprises a seventh interface (900) and an eighth interface (700); The second valve port of the five-way valve (500) is led to the seventh interface (900) through a corresponding flow channel, and the seventh interface (900) is used to connect to the water outlet of the electric drive coolant circuit; The first valve port of the five-way valve (500) is led to the eighth interface (700) through a corresponding flow channel, and the eighth interface (700) is used to connect to the water inlet of the radiator.

3. The thermal management water channel integrated module according to claim 2, characterized in that: An electric drive coolant circuit water outlet water temperature sensor (T2) is provided on the flow channel between the second valve port of the five-way valve (500) and the seventh interface (900), and the electric drive coolant circuit water outlet water temperature sensor (T2) is used to detect the outlet water temperature of the electric drive coolant circuit.

4. The thermal management water channel integrated module according to claim 2, characterized in that: The six-way valve (400) comprises a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port and a sixth valve port; The interface comprises a first interface (1200), a second interface (1100), a third interface (1300), a fourth interface (1400), a fifth interface (1000) and a sixth interface (800); The first valve port of the six-way valve (400) is connected to the inlet of the battery water pump (200) through a corresponding flow channel, and the outlet of the battery water pump (200) is led to the first interface (1200) through the corresponding flow channel; the first interface (1200) is used to connect to the inlet of the battery coolant circuit; The second valve port of the six-way valve (400) is led to the second interface (1100) through a corresponding flow channel, and the second interface (1100) is used to connect to the water outlet of the battery coolant circuit; The third valve port of the six-way valve (400) is led to the third interface (1300) through a corresponding flow channel, and the fourth valve port is led to the fourth interface (1400) through a corresponding flow channel; The fifth valve port of the six-way valve (400) is connected to the inlet of the electric drive water pump (300) through a corresponding flow channel, and the outlet of the electric drive water pump (300) is led to the fifth interface (1000) through the corresponding flow channel, and the fifth interface (1000) is used to connect to the inlet of the electric drive coolant circuit; The sixth valve port of the six-way valve (400) is led to the sixth interface (800) through a corresponding flow channel, and is connected to the fifth valve port of the five-way valve (500) in another way; the sixth interface (800) is used to connect to the water outlet of the radiator.

5. The thermal management water channel integrated module according to claim 4, characterized in that: A battery coolant circuit water outlet water temperature sensor (T4) is provided on the flow channel between the second valve port of the six-way valve (400) and the second interface (1100), and the battery coolant circuit water outlet water temperature sensor (T4) is used to detect the inlet water temperature of the electric drive coolant circuit; An electric drive water pump outlet water temperature sensor (T1) is provided on the flow channel between the water outlet of the electric drive water pump (300) and the fifth interface (1000), and the electric drive water pump outlet water temperature sensor (T1) is used to detect the outlet water temperature of the battery coolant circuit; A cooler coolant outlet water temperature sensor (T5) is provided on the flow channel between the fourth valve port of the six-way valve (400) and the fourth interface (1400).

6. The thermal management water channel integrated module according to claim 5, characterized in that: The thermal management water channel integrated module further comprises a plate heat exchanger (600) located on the same side as the six-way valve (400) and the five-way valve (500), and the plate heat exchanger (600) is used to guide the corresponding flow channel medium to the corresponding interface.

7. The thermal management water channel integrated module according to claim 6, characterized in that: The fourth valve port of the five-way valve (500) is connected to the hot-side water outlet of the plate heat exchanger (600) through a corresponding flow channel; The third valve port of the five-way valve (500) is connected to the hot-side water inlet of the plate heat exchanger (600) through a corresponding flow channel.

8. The thermal management water channel integrated module according to claim 6, characterized in that: The cold side water inlet of the plate heat exchanger (600) is led to the ninth interface (1600) through a corresponding flow channel, and the ninth interface (1600) is used to connect to the water outlet of the air conditioning warm air coolant circuit; The cold water outlet of the plate heat exchanger (600) is led to the tenth interface (1500) through a flow channel.

9. The thermal management water channel integrated module according to claim 8, characterized in that: An air conditioning warm air coolant circuit outlet water temperature sensor (T6) is provided on the flow channel between the cold test water inlet of the plate heat exchanger (600) and the ninth interface (1600), and the air conditioning warm air coolant circuit outlet water temperature sensor (T6) is used to detect the air conditioning warm air coolant circuit outlet temperature.

10. A vehicle thermal management system, characterized in that: It includes: The thermal management water channel integrated module according to any one of claims 1 to 9; A refrigerant circuit, wherein the coolant inlet of the cooler is connected to the third interface (1300) of the thermal management water circuit integrated module, and the coolant outlet of the cooler is connected to the fourth interface (1400) of the thermal management water circuit integrated module; An electric drive coolant loop, wherein the loop inlet is connected to the fifth interface (1000) of the thermal management water circuit integrated module, and the loop outlet is connected to the seventh interface (900); A battery coolant loop, wherein the loop inlet is connected to the first interface (1200), the first interface (1200) is connected to the water inlet of the PTC of the battery coolant loop, and the loop outlet of the battery coolant loop is connected to the second interface (1100); The air conditioning warm air coolant loop has a loop water outlet connected to the ninth interface (1600), and a loop water inlet connected to the tenth interface (1500); The radiator has a water inlet connected to the eighth interface (700) and a water outlet connected to the sixth interface (800).

11. A control method for a vehicle thermal management system as claimed in claim 10, characterized in that: It includes the following steps: Obtaining judgment information; the judgment information includes the vehicle's charging status, driving status, external ambient temperature, cab heating instruction information, battery temperature, and electric drive temperature; Based on the judgment information, a control mode corresponding to the thermal management water circuit integration module is obtained; The operation of the vehicle thermal management system is controlled according to the control mode.

12. The control method of the vehicle thermal management system according to claim 11, characterized in that: When the vehicle is stopped and in charging state, the control mode is derived based on the external environment temperature and the battery temperature; When the vehicle is in motion, the control mode is derived based on the external ambient temperature, battery temperature, electric drive temperature and cab heating command information.

13. The control method of a vehicle thermal management system according to claim 12, characterized in that: When the vehicle is stopped and in charging state, a control mode is derived based on the ambient temperature and the battery temperature, including the following steps: If the ambient temperature is greater than or equal to the normal temperature, and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is warm / high temperature fast charging-battery cooling, which corresponds to control mode 1; If the ambient temperature is lower than the normal temperature, and the battery temperature is lower than the minimum value of the first design range, the working scenario is low-temperature fast charging-battery heating, which corresponds to control mode 2; If the external environment temperature is lower than the normal temperature and the battery temperature is greater than or equal to the maximum value of the first design range, the working scenario is low-temperature fast charging-low-temperature heat dissipation of the battery, which corresponds to control mode three.

14. The control method of the vehicle thermal management system according to claim 13, characterized in that: The control mode 1 specifically includes: the battery water pump (200) is turned on, the refrigerant circuit is running, the first valve port and the fourth valve port of the six-way valve (400) are connected, and the second valve port and the third valve port are connected; The control mode 2 specifically includes: the battery water pump (200) is turned on, the PTC of the battery coolant circuit is turned on, and the first valve port and the second valve port of the six-way valve (400) are connected; The control mode three is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, and the radiator fan is turned on; the second valve port and the fifth valve port of the six-way valve (400) are connected, and the first valve port and the sixth valve port are connected; and the first valve port and the second valve port of the five-way valve (500) are connected.

15. The control method of a vehicle thermal management system according to claim 13, characterized in that: When the vehicle is in driving state, the control mode is derived based on the ambient temperature, battery temperature, electric drive temperature and cabin heating instruction information, including the following steps: If the ambient temperature is greater than or equal to the normal temperature, the battery temperature is greater than or equal to the maximum value of the first design range, and the electric drive temperature is greater than or equal to the maximum value of the second design range, then the working scenario is normal temperature / high temperature driving-battery cooling, electric drive cooling, and this working scenario corresponds to control mode 4; If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the maximum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving-electric drive cooling, which corresponds to control mode five; If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is lower than the minimum value of the second design range, and no cab heating command is received, the working scenario is low temperature driving - battery heating, electric drive heat storage, and this working scenario corresponds to control mode six; If the external ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and no cab heating command is received, then the working scenario is low-temperature driving - battery heating, electric drive waste heat utilization, and this working scenario corresponds to control mode seven.

16. The control method of the vehicle thermal management system according to claim 15, characterized in that: The control mode 4 is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, the refrigerant circuit is running, and the radiator fan is turned on; the second valve port and the third valve port of the six-way valve (400) are connected, the first valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve (500) are connected; The control mode five is specifically as follows: the electric water pump (300) is turned on, and the radiator fan is turned on; the fifth valve port and the sixth valve port of the six-way valve (400) are connected; the first valve port and the second valve port of the five-way valve (500) are connected; The control mode six is ​​specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, and the PTC of the battery coolant circuit is turned on; the second valve port of the six-way valve (400) is connected to the first valve port, and the fifth valve port is connected to the sixth valve port; the fifth valve port of the five-way valve (500) is connected to the second valve port; the fifth valve port of the five-way valve (500) is connected to the sixth valve port of the six-way valve (400); The control mode seven is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, and the refrigerant circuit is running; the second valve port and the third valve port of the six-way valve (400) are connected, the first valve port and the sixth valve port are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve (500) are connected.

17. The control method of a vehicle thermal management system according to claim 16, characterized in that: When the vehicle is in a driving state, the control mode is derived based on the ambient temperature, the battery temperature, the electric drive temperature and the cab heating instruction information, and the following steps are also included: If the ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the working scenario is low-temperature driving-cabin heating, electric drive waste heat utilization, and this working scenario corresponds to control mode eight; If the ambient temperature is lower than the normal temperature, the battery temperature is lower than the minimum value of the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating instruction is received, the control modes corresponding to the working scenario include control mode nine, control mode ten, and control mode eleven; If the external ambient temperature is lower than the normal temperature, the battery temperature is within the first design range, the electric drive temperature is greater than or equal to the minimum value of the second design range, and a cab heating command is received, the control modes corresponding to the working scenarios include control mode twelve and control mode thirteen.

18. The control method of the vehicle thermal management system according to claim 17, characterized in that: The control mode eight is specifically as follows: the electric drive water pump (300) is turned on, and the air conditioning warm air coolant circuit is turned on; the fifth valve port and the sixth valve port of the six-way valve (400) are connected; the fifth valve port and the fourth valve port of the five-way valve (500) are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve (500) is connected to the sixth valve port of the six-way valve (400); The control mode nine is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the second valve port and the third valve port of the six-way valve (400) are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the fifth valve port and the fourth valve port of the five-way valve (500) are connected, and the second valve port and the third valve port are connected; the fifth valve port of the five-way valve (500) is connected to the sixth valve port of the six-way valve (400); The control mode ten is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port and the second valve port of the six-way valve (400) are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the fifth valve port and the second valve port of the five-way valve (500) are connected; the fifth valve port of the five-way valve (500) is connected to the sixth valve port of the six-way valve (400); The control mode eleven is specifically as follows: the battery water pump (200) and the electric drive water pump (300) are turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the second valve port of the six-way valve (400) are connected, the fourth valve port and the fifth valve port are connected, and the first valve port and the sixth valve port are connected; the first valve port and the second valve port of the five-way valve (500) are connected; The control mode twelve is specifically as follows: the electric drive water pump (300) is turned on, the refrigerant circuit is running, and the air conditioning warm air coolant circuit is turned on; the third valve port and the sixth valve port of the six-way valve (400) are connected, and the fourth valve port and the fifth valve port are connected; the fifth valve port and the second valve port of the five-way valve (500) are connected, and the fifth valve port of the five-way valve (500) is connected to the sixth valve port of the six-way valve (400); The control mode thirteen is specifically as follows: the electric water pump (300) is turned on, the refrigerant circuit is running, the air conditioning warm air coolant circuit is turned on, and the radiator fan is turned on; the third valve port and the sixth valve port of the six-way valve (400) are connected, and the fourth valve port and the fifth valve port are connected; the first valve port and the second valve port of the five-way valve (500) are connected.

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