A thermal management water route integrated module, a vehicle thermal management system and a control method

Abstract

The application relates to a heat management waterway integrated module, a vehicle heat management system and a control method. The heat management waterway integrated module is provided with multiple interfaces, and multiple flow channels for communicating the corresponding interfaces are arranged in a flow channel plate. A six-way valve and a five-way valve are arranged on one side surface of the flow channel plate and are used for controlling the on-off of the corresponding flow channels. A battery water pump and an electric drive water pump are arranged on the other side surface of the flow channel plate and are used for driving the medium in the corresponding flow channels to flow to the corresponding interfaces. Among the multiple interfaces, there are interfaces for being connected with at least one or more of an electric drive cooling liquid circuit, a battery cooling liquid circuit and an air conditioner warm air cooling liquid circuit, so that the pump, the valve and the heat exchanger are integrated, the connecting pipelines between the components are reduced, the arrangement space is compact, the components are reduced, the complexity of the arrangement is reduced, and the assembly man-hours are reduced. The six-way valve and the five-way valve can be controlled to switch and couple the control modes, realize the series-parallel connection of different circuits, and meet different heat management requirements.

Description

Technical Field

[0001] This application relates to the field of thermal management for new energy vehicles, and in particular to a thermal management water circuit integrated module, a vehicle thermal management system, and a control method. Background Technology

[0002] The thermal management system for 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 their temperature requirements vary. Existing thermal management systems have separate and independent layouts for the electric drive battery water pump, heat exchanger, etc., connected by multiple valves and pipelines to form a thermal management cycle.

[0003] With the development of thermal management technology, there is a need to manage the heat transfer between the battery, electric drive, crew compartment and the external environment, and improve the efficiency of integrated thermal management. Technologies such as heat pump air conditioning and waste heat utilization of electric drive / battery have been 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 loops to utilize waste heat will make the layout scheme cumbersome, with a large number of pipelines, ultimately resulting in a large system size and weight, and complex assembly; in addition, it will also cause problems of complex design and high cost. Summary of the Invention

[0005] This application provides a thermal management water circuit integrated module, a vehicle thermal management system, and a control method to solve the problems in related technologies where 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 one aspect, a thermal management water circuit integrated module is provided, which includes: a flow channel plate, a battery water pump, an electric water pump, a six-way valve and a five-way valve;

[0007] The thermal management water circuit integration module is provided with multiple interfaces, and the flow channel plate is provided with multiple flow channels that connect to 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 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, one of the plurality of interfaces has an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning heating 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. The seventh interface is used to connect to the outlet of the electric drive coolant circuit.

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

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

[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 interface includes 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 a corresponding flow channel, and the outlet of the battery water pump is led to the first interface through a corresponding flow channel; the first interface is used to connect to 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. The second interface is used to connect to the 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 water pump through a corresponding flow channel, and the outlet of the electric water pump is led to the fifth interface through a corresponding flow channel. The fifth interface is used to connect to the inlet of the electric coolant circuit.

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

[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. The battery coolant circuit outlet water temperature sensor is used to detect the inlet water temperature of the electric drive coolant circuit.

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

[0024] A coolant outlet water temperature sensor is installed 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 integration module further includes a plate heat exchanger located on the same side as the six-way valve and the five-way valve, the plate heat exchanger being used to lead 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 outlet of the plate heat exchanger through a corresponding flow channel.

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

[0028] In some embodiments, the cold water inlet of the plate heat exchanger is led to the ninth interface through a corresponding flow channel, and the ninth interface is used to connect to the outlet of the air conditioning heating coolant circuit.

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

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

[0031] Thirdly, a vehicle thermal management system is provided, comprising:

[0032] Thermal management water circuit integrated module;

[0033] The refrigerant circuit has its coolant inlet connected to the third interface of the thermal management water circuit integrated module, and its coolant outlet connected to the fourth interface of the thermal management water circuit integrated module.

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

[0035] The battery coolant circuit has its circuit inlet connected to a first interface, the first interface connected to the inlet of the battery coolant circuit, and its circuit outlet connected to a second interface.

[0036] The air conditioning heating coolant circuit has its outlet connected to the ninth interface and its inlet connected to the tenth interface.

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

[0038] Thirdly, a control method for a vehicle thermal management system is provided, which includes the following steps:

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

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

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

[0042] In some embodiments, when the vehicle is stationary and charging, the control mode is derived based on the ambient temperature and battery temperature.

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

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

[0045] If the ambient temperature is greater than or equal to the normal temperature value 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 one.

[0046] If the ambient temperature is lower than 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 two.

[0047] If the ambient temperature is lower than 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 battery heat dissipation, which corresponds to control mode three.

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

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

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

[0051] In some embodiments, when the vehicle is in motion, a control mode is derived based on ambient temperature, battery temperature, electric drive temperature, and cab heating command 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 and electric drive cooling, which corresponds to control mode four.

[0053] If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - electric drive cooling, which corresponds to control mode five.

[0054] If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - battery heating, electric drive heat storage, which corresponds to control mode six.

[0055] If the ambient temperature is lower than normal, 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 and electric drive waste heat utilization, which corresponds to control mode seven.

[0056] In some embodiments, the control mode four specifically refers to: the battery water pump and the electric water pump being turned on, the refrigerant circuit being operated, and the radiator fan being turned on; the second and third valve ports of the six-way valve being connected, the first and fourth valve ports being connected, and the fifth and sixth valve ports being connected; and the first and second valve ports of the five-way valve being connected.

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

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

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

[0060] In some embodiments, when the vehicle is in motion, the control mode is determined based on ambient temperature, battery temperature, electric drive temperature, and cab heating command information, and the following steps are also included:

[0061] If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the working scenario is low temperature driving - cab heating and electric drive waste heat utilization. This working scenario corresponds to control mode eight.

[0062] If the ambient temperature is lower than normal, the battery temperature is lower than the minimum value of the first design range, and 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 corresponding control modes for the working scenario include control mode nine, control mode ten, and control mode eleven.

[0063] If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the corresponding control modes for the working scenario include control mode twelve and control mode thirteen.

[0064] In some embodiments, the control mode eight specifically refers to: the electric water pump being turned on, the air conditioning heating coolant circuit being turned on; the fifth and sixth valve ports of the six-way valve being connected; the fifth and fourth valve ports of the five-way valve being connected, and the second and third valve ports being connected; and the fifth valve port of the five-way valve being connected to the sixth valve port of the six-way valve.

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

[0066] The control mode 10 specifically includes: the battery water pump and the electric water pump are turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the third and second valve ports of the six-way valve are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the fifth and second valve ports of the five-way valve are connected; and the fifth valve port of the five-way valve and the sixth valve port of the six-way valve are connected.

[0067] The control mode eleven specifically refers to the following: the battery water pump and the electric water pump are turned on, the refrigerant circuit is running, the air conditioning heating coolant circuit is turned on, and the radiator fan is turned on; the third and second valve ports of the six-way valve are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the first and second valve ports of the five-way valve are connected.

[0068] The control mode 12 is specifically as follows: the electric water pump is turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the third and sixth valve ports of the six-way valve are connected, and the fourth and fifth valve ports are connected; the fifth and second valve ports 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 specifically refers to the following: the electric water pump is turned on, the refrigerant circuit is running, the air conditioning heating coolant circuit is turned on, and the radiator fan is turned on; the third and sixth valve ports of the six-way valve are connected, and the fourth and fifth valve ports are connected; the first and second valve ports of the five-way valve are connected.

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

[0071] This 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. The module has multiple interfaces, and the flow channel plate has multiple flow channels connecting to the corresponding interfaces. The six-way valve and 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 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 channels to the corresponding interfaces. Among the multiple 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 / heating coolant circuit. This structure integrates the pumps and valves into one unit, reducing the connecting pipes between components, resulting in a compact layout, fewer assembled components, significantly reducing the complexity of the layout, and reducing assembly time. By controlling the six-way valve and five-way valve, control modes can be switched and coupled to achieve series and parallel connections of different circuits, meeting different thermal management requirements. Attached Figure Description

[0072] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0073] Figure 1A front view of the thermal management water circuit integration module provided in an embodiment of this application;

[0074] Figure 2 A rear view of the thermal management water circuit integration module provided in an embodiment of this application;

[0075] Figure 3 A schematic diagram of the interface in the front view of the thermal management water circuit integration module provided in the embodiments of this application;

[0076] Figure 4 A schematic diagram of the interface in the rear view of the thermal management water circuit integration module provided in the embodiments of this application;

[0077] Figure 5 This is a schematic diagram of the waterway integration module provided in an embodiment of this application;

[0078] Figure 6 The conduction schematic diagram of control mode one provided in the embodiments of this application;

[0079] Figure 7 The conduction principle diagram of control mode two provided in the embodiments of this application;

[0080] Figure 8 The conduction principle diagram of control mode three provided in the embodiments of this application;

[0081] Figure 9 The conduction principle diagram of control mode four provided in the embodiments of this application;

[0082] Figure 10 The conduction principle diagram of control mode five provided in the embodiments of this application;

[0083] Figure 11 The conduction schematic diagram of control mode six provided in the embodiments of this application;

[0084] Figure 12 The conduction principle diagram of control mode seven provided in the embodiments of this application;

[0085] Figure 13 The conduction principle diagram of control mode eight provided in the embodiments of this application;

[0086] Figure 14 The conduction principle diagram of control mode nine provided in the embodiments of this application;

[0087] Figure 15 The conduction principle diagram of control mode ten provided in the embodiments of this application;

[0088] Figure 16 The conduction schematic diagram of control mode eleven provided in the embodiments of this application;

[0089] Figure 17The conduction principle diagram of control mode twelve provided in the embodiments of this application;

[0090] Figure 18 The schematic diagram of the conduction principle of control mode thirteen provided in the embodiments of this application.

[0091] In the diagram: 100, flow channel plate; 200, battery water pump; 300, electric 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 water pump outlet water temperature sensor; T2, electric coolant circuit outlet water temperature sensor; T3, PTC outlet water temperature sensor; T4, battery coolant circuit outlet water temperature sensor; T5, coolant outlet water temperature sensor for cooler; T6, air conditioning heater coolant circuit outlet water temperature sensor. Detailed Implementation

[0092] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0093] Existing thermal management systems have components that are scattered and connected by multiple valves and pipes. This results in a cumbersome layout, numerous and complex piping systems, large system size and weight, complicated assembly, and high costs.

[0094] Existing technologies achieve waste heat utilization by adding multiple heat exchangers and valves, and switching loops. However, this results in numerous valves, high system costs, difficult layout, poor heat exchange efficiency, and low energy utilization.

[0095] When considering vehicle positioning, target user groups, and driving range goals, different thermal management systems with varying functions require different system architectures in existing technologies. This results in a wide variety of system architectures, complex management, and high labor and cost.

[0096] Therefore, this application provides a thermal management water circuit integrated module, a vehicle thermal management system and control method to solve the problem in related technologies that the 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] Firstly, please refer to Figures 1-5 A thermal management water circuit integrated module includes: a flow channel plate 100, a battery water pump 200, an electric water pump 300, a six-way valve 400, and a five-way valve 500.

[0098] The thermal management water circuit integration module is equipped with multiple interfaces, and the flow channel plate 100 is equipped with multiple flow channels that connect to the corresponding interfaces.

[0099] A six-way valve 400 and a 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; a battery water pump 200 and an electric 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, multiple interfaces have interfaces for connecting to at least one or more of the electric drive coolant circuit, battery coolant circuit, and air conditioning heating coolant circuit.

[0101] The above structure integrates the pump, valve and heat exchanger into one unit, reducing the connecting pipes between components, making the layout compact, reducing the number of assembly parts, greatly reducing the complexity of the layout and reducing 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 needs.

[0102] The main components of the water circuit of the upcoming integrated thermal management system, such as pumps and valves, are integrated into one unit, reducing the connecting pipes between components, resulting in a compact layout and fewer assembly parts, which greatly reduces the complexity of the layout and assembly time.

[0103] Multiple three-way and four-way valves were eliminated, and a single six-way valve and a single five-way valve, along with a control method, were used to achieve low-temperature cooling of the battery, heating of the battery with waste heat from the motor, heating of the cab with waste heat from the motor, and heating of the cab with waste heat from the motor and battery. This maximized waste heat utilization and reduced the power consumption of the thermal management system. This water circuit integrated module is compatible with the architecture of heat pump, non-heat pump, and waste heat utilization integrated thermal management systems for pure electric vehicles, offering high versatility, shortening the development cycle of the platform's thermal management system, and reducing the cost of component quantification. The effects of maximizing waste heat utilization, reducing the power consumption of the thermal management system, and high versatility will be described in detail later in the section on the control method. The five ports of the five-way valve are represented by the numbers 1, 2, 3, 4, and 5; the six ports of the six-way valve are represented by the numbers 1, 2, 3, 4, 5, and 6.

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

[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 interfaces include 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 the corresponding flow channel. The seventh interface 900 is used to connect to the outlet of the electric drive coolant circuit.

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

[0108] refer to Figure 5 Furthermore, to enhance the integration effect, the sensor was also integrated. The flow channel between the second valve port and the seventh interface 900 of the five-way valve 500 is equipped with an electric drive coolant circuit outlet water temperature sensor T2, which is used to detect the outlet water temperature of the electric drive coolant circuit.

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

[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 interfaces include the first interface 1200, the second interface 1100, the third interface 1300, the fourth interface 1400, the fifth interface 1000, and the 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 a corresponding flow channel, and the outlet of the battery water pump 200 is led to the first interface 1200 through a corresponding flow channel; the first interface 1200 is used to connect to 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 the corresponding flow channel. The second interface 1100 is used to connect to the 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 water pump 300 through the corresponding flow channel, and the outlet of the electric 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 the other path is connected to the fifth valve port of the five-way valve 500; the sixth interface 800 is used to connect to the radiator outlet.

[0117] refer to Figure 5Furthermore, in order to enhance the integration effect, the sensor was also integrated. A battery coolant circuit outlet water temperature sensor T4 is provided on the flow channel between the second valve port and the second interface 1100 of the six-way valve 400. 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 water pump outlet water temperature sensor T1 is provided on the flow channel between the outlet of the electric water pump 300 and the fifth interface 1000. The electric 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 installed on the flow channel between the fourth valve port and the fourth interface 1400 of the six-way valve 400.

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

[0121] The thermal management water circuit integration module also 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 lead the corresponding flow channel medium to the corresponding interface.

[0122] The plate heat exchanger 600 and the five-way valve 500 are connected 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 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.

[0123] The plate heat exchanger 600 is connected to the interface in the following way: the cold 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 to the outlet of the air conditioning heating coolant circuit; the cold 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 the piping, the flow channel between the cold inlet of the plate heat exchanger 600 and the ninth interface 1600 is equipped with a water temperature sensor T6 for the outlet of the air conditioning heating coolant circuit. The water temperature sensor T6 for the outlet of the air conditioning heating coolant circuit is used to detect the temperature of the outlet of the air conditioning heating coolant circuit.

[0125] The interfaces of the thermal management water circuit integration module and the connection forms of each component have been described above. The degree of integration of each embodiment above is as follows: pump, valve --- pump, valve, sensor --- pump, valve, sensor, heat exchanger.

[0126] This integrates the main components of the thermal management system's water circuit, including pumps, valves, heat exchangers, and water temperature sensors, reducing the number of connecting pipes between components, resulting in a compact layout and fewer assembly parts, which greatly reduces the complexity of the layout and assembly time.

[0127] Reference Appendix Figure 5 Secondly, a vehicle thermal management system is provided, comprising:

[0128] Thermal management water circuit integrated module;

[0129] The refrigerant circuit has its coolant inlet connected to the third interface 1300 of the thermal management water circuit integrated module, and its coolant outlet connected to the fourth interface 1400 of the thermal management water circuit integrated module.

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

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

[0132] The air conditioning heating coolant circuit has its outlet connected to the ninth interface 1600 and its inlet connected to the tenth interface 1500.

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

[0134] Appendix Figure 5 In this context, "chiller" refers to a cooler, and the refrigerant circuit serves as the refrigerant flow loop for battery cooling, air conditioning, and integrated battery cooling systems, providing cooling capacity. (The remaining text appears to be unrelated and possibly machine-generated.) Figure 5 The motor coolant circuit is also the electric drive coolant circuit. This is also shown in the accompanying diagrams below.

[0135] By eliminating multiple three-way and four-way valves and integrating pumps, valves, heat exchangers, and water temperature sensors into a single unit, and then using a control method, it can achieve low-temperature battery cooling, motor waste heat heating of the battery, motor waste heat heating of the cab, and motor-battery waste heat heating of the cab, maximizing waste heat utilization and reducing the power consumption of the thermal management system. Specifically, by switching and coupling different control modes of the five-way valve 500 and the six-way valve 400, different circuits can be connected in series and parallel to achieve functions such as electric drive cooling, battery cooling and heating, low-temperature battery cooling, motor waste heat heating of the battery, motor waste heat heating of the cab, and motor-battery waste heat heating of the cab. This is applicable to thermal management system architectures such as heat pump, non-heat pump, and waste heat utilization systems.

[0136] Thirdly, a control method for a vehicle thermal management system is provided, which includes the following steps:

[0137] Step 100: Obtain judgment information; the judgment information includes the vehicle's charging status, driving status, ambient temperature, cab heating command information, battery temperature, and electric drive temperature;

[0138] Step 101: Determine the control mode corresponding to the 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] In step 101, when the vehicle is stationary and charging, the control mode is determined based on the ambient temperature and battery temperature.

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

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

[0143] If the ambient temperature is greater than or equal to the normal temperature value 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 one.

[0144] If the ambient temperature is lower than 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 two.

[0145] If the ambient temperature is lower than 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 battery heat dissipation, which corresponds to control mode three.

[0146] Specifically, control mode one involves: battery water pump 200 being turned on, refrigerant circuit operation, and the first and fourth valve ports of the six-way valve 400 being connected, as well as the second and third valve ports; the application scenario is: normal temperature / high temperature fast charging - battery cooling.

[0147] In this scenario, the battery requires cooling, while the electric drive does not. Controlling the six-way valve 400 to activate as described above turns on the battery water pump 200, starts the refrigerant circuit, and allows the battery coolant in the independent circuit to be cooled to the required temperature via the chiller, thus cooling the battery. The system activation diagram is shown below. Figure 6 .

[0148] Control mode two specifically involves: battery water pump 200 being turned on, PTC in the battery coolant circuit being turned on, and the first and second valve ports of the six-way valve 400 being connected; the application scenario is: low-temperature fast charging - battery heating.

[0149] In this scenario, the battery requires heating, while the electric drive does not need cooling. Controlling the six-way valve 400 to activate it as described above turns on the battery water pump 200, and activates the PTC to heat the battery coolant to the required temperature, thus heating the battery. The system activation diagram is shown below. Figure 7 .

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

[0151] In this scenario, the battery requires cooling, while the electric drive does not. The six-way valve 400 and five-way valve 500 are activated as described above, connecting the battery coolant circuit and the electric drive coolant circuit in series. Battery water pump 200 and electric drive water pump 300 are activated, and the radiator fan is turned on. The coolant in the electric drive-battery series circuit is cooled to the required temperature by the radiator, thus cooling the battery. The system activation diagram is shown below. Figure 8 This control mode is also suitable for low-temperature driving scenarios where the battery and electric drive require cooling. In this mode, the battery is cooled by a radiator, eliminating the need to activate the refrigerant circuit, resulting in greater energy efficiency.

[0152] In some preferred embodiments, when the vehicle is in motion, a control mode is determined based on ambient temperature, battery temperature, electric drive temperature, and cab heating command 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, then the working scenario is normal temperature / high temperature driving - battery cooling, electric drive cooling, and this working scenario corresponds to control mode four.

[0154] If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - electric drive cooling, which corresponds to control mode five.

[0155] If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - battery heating, electric drive heat storage, which corresponds to control mode six.

[0156] If the ambient temperature is lower than normal, 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 and electric drive waste heat utilization, which corresponds to control mode seven.

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

[0158] If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the working scenario is low temperature driving - cab heating and electric drive waste heat utilization. This working scenario corresponds to control mode eight.

[0159] If the ambient temperature is lower than normal, the battery temperature is lower than the minimum value of the first design range, and 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 corresponding control modes for the working scenario include control mode nine, control mode ten, and control mode eleven.

[0160] If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the corresponding control modes for the working scenario include control mode twelve and control mode thirteen.

[0161] Among them, combined with the appendix Figure 9-18 The control strategy of the control mode will be explained in detail below:

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

[0163] Application scenarios include: normal temperature / high temperature driving - battery cooling and electric drive cooling.

[0164] In this scenario, the battery requires cooling, and the electric drive requires heat dissipation. The six-way valve 400 and five-way valve 500 are activated as described above, with the battery coolant circuit and the electric drive coolant circuit operating independently. When battery water pump 200 is turned on, the refrigerant circuit starts, and the battery coolant is cooled to the required temperature via the chiller, thus cooling the battery. When electric drive water pump 300 is turned on, the radiator fan starts, and the electric drive coolant is cooled to the required temperature via the radiator, thus dissipating heat from the electric drive. The system activation diagram is shown below. Figure 9 .

[0165] Control mode five is as follows: the electric water pump 300 is turned on, the radiator fan is turned on; the fifth and sixth valve ports of the six-way valve 400 are connected; the first and second valve ports 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 require cooling, and the electric drive does not need heat dissipation. The six-way valve 400 and five-way valve 500 are activated as described above. The electric drive water pump 300 starts, the radiator fan starts, and the electric drive coolant is cooled to the required temperature by the radiator, thus cooling the electric drive. The system activation diagram is shown below. Figure 10 .

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

[0169] In this scenario, the battery requires heating and the electric drive needs heat storage. The six-way valve 400 and five-way valve 500 are activated as described above, with the battery coolant circuit and the electric drive coolant circuit operating independently. Battery water pump 200 activates, and the PTC activates to heat the battery coolant to the required temperature, thus heating the battery. Electric drive water pump 300 activates, driving the motor and controller to heat the coolant in the electric drive circuit, storing heat. When the electric drive coolant is heated to a certain temperature, it can heat the battery or the cab. The system activation diagram is shown below. Figure 11 .

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

[0171] In this scenario, the battery requires heating and the electric drive needs cooling. The six-way valve 400 and five-way valve 500 are activated as described above, connecting the battery coolant circuit and the electric drive coolant circuit in series. The battery water pump 200 and the electric drive water pump 300 are activated, driving the motor and controller to heat the coolant, which then heats the battery. When the heat dissipation from the drive motor and controller is sufficient, the PTC (Power Transmission Control) does not need to be activated; when the heat dissipation from the drive motor and controller is insufficient to meet the battery's heating requirements, the PTC activates at a low power to supplement the required heating. The system activation diagram is shown below. Figure 12 This control mode utilizes the waste heat from the electric drive to heat the battery, thereby achieving waste heat utilization, effectively reducing PTC power, and saving more energy.

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

[0173] In this scenario, the electric drive requires cooling, and the cab needs heating. The six-way valve 400 and five-way valve 500 are activated as described above. The air conditioning heating circuit is activated, and hot water flows through the heat exchanger. The electric drive water pump 300 is activated, driving the motor and controller to heat the coolant. The heated coolant then heats the hot water in the heating system via the heat exchanger. When the heat dissipation from the drive motor and controller is sufficient, the air conditioning heating PTC does not need to be activated. When the heat dissipation from the drive motor and controller is insufficient to meet the battery heating requirements, the air conditioning heating PTC is activated at low power to supplement the heating required in the cab. The system activation diagram is shown below. Figure 13 This control mode utilizes the waste heat from the electric drive to heat the cab, effectively reducing the power consumption of the air conditioning heating PTC and thus saving energy.

[0174] Control mode nine is as follows: battery water pump 200 and electric water pump 300 are turned on, refrigerant circuit is running, and air conditioning heating coolant circuit is turned on; the second and third valve ports of the six-way valve 400 are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the fifth and fourth valve ports of the five-way valve 500 are connected, and the second and third valve ports 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 include: low-temperature driving - battery heating, electric drive waste heat utilization, and cab heating.

[0176] In this scenario, the battery needs heating, the electric drive needs cooling, and the cab needs heating. The six-way valve 400 and five-way valve 500 are activated as described above. The air conditioning heating circuit is activated, and hot air flows through the heat exchanger. The electric drive water pump 300 and battery water pump 200 are activated, driving the motor and controller to heat the coolant. The heated coolant then heats the cab and battery. When the heat dissipation of the drive motor and controller is sufficient, the cab PTC and battery PTC do not need to be activated. When the heat dissipation of the drive motor and controller is insufficient to meet the heating requirements, the PTC is activated at low power to supplement the heating required for the cab and battery. The system activation diagram is shown below. Figure 14 This control mode utilizes the waste heat from the electric drive to heat the cab and battery, effectively reducing PTC power and saving energy.

[0177] The control mode 10 is as follows: the battery water pump 200 and the electric water pump 300 are turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the third and second valve ports of the six-way valve 400 are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the fifth and second valve ports of the five-way valve 500 are connected; the fifth valve port of the five-way valve 500 and the sixth valve port of the six-way valve 400 are connected.

[0178] Application scenarios include: low-temperature driving - battery heating, cab heating, and electric-driven water source heat pumps.

[0179] In this scenario, the electric drive requires cooling, the battery needs heating, and the cab needs heating. Controlling the six-way valve 400 and five-way valve 500 as described above activates the electric drive water pump 300 and battery water pump 200. The motor and controller heat the coolant, which then heats the battery before flowing through the chiller. The air conditioning heating circuit activates, and the refrigerant circuit starts in water source heat pump mode, absorbing heat from the motor and controller in the chiller and transferring it to the air conditioning heating circuit. When the heat absorbed from the chiller is sufficient, the cab PTC does not need to be activated; when the heat absorbed from the chiller is insufficient to meet the heating requirements, the PTC activates at low power to supplement the heating needed in the cab. The system connection diagram is shown below. Figure 15 This control mode is an electric-driven water source heat pump mode, which uses the waste heat from the electric drive to heat the battery and cab. The battery PTC does not start, and the cab PTC is not turned on or turns on at a low power, making it more energy-efficient.

[0180] Control mode eleven specifically involves: battery water pump 200 and electric drive water pump 300 being activated, refrigerant circuit operation, air conditioning heating coolant circuit activation, and radiator fan activation; the third and second valve ports of the six-way valve 400 being connected, the fourth and fifth valve ports being connected, and the first and sixth valve ports being connected; and the first and second valve ports of the five-way valve 500 being connected. The application scenarios are: low-temperature driving – battery heating, cab heating, and electric drive water source heat pump.

[0181] In this scenario, the electric drive requires cooling, the battery needs heating, and the cab needs warmth. The six-way valve 400 and five-way valve 500 are activated as described above. The electric drive water pump 300 and battery water pump 200 are activated, the radiator fan is activated, and the motor and controller heat the coolant. The heated coolant dissipates some heat through the radiator before heating the battery, and then flows through the chiller. The air conditioning heating circuit is activated, and the refrigerant circuit starts in water source heat pump mode, absorbing heat from the chiller from the motor and controller and transferring it to the air conditioning heating circuit. The battery PTC and cab PTC are not activated; waste heat from the electric drive is used to heat the battery and cab. The system activation diagram is shown below. Figure 16 This control mode is an electric-driven water source heat pump mode, which uses the waste heat from the electric drive to heat the battery and cab. The battery PTC and cab PTC do not start, making it more energy-efficient.

[0182] Control mode twelve specifically involves: electric water pump 300 being activated, refrigerant circuit operation, and air conditioning / heating coolant circuit activation; the third and sixth ports of the six-way valve 400 being connected, and the fourth and fifth ports being connected; the fifth and second ports of the five-way valve 500 being connected, and the fifth port of the five-way valve 500 being connected to the sixth port of the six-way valve 400; the application scenario is: low-temperature driving - cab heating, electric water source heat pump.

[0183] In this scenario, the electric drive requires cooling, and the cab needs heating. The six-way valve 400 and five-way valve 500 are activated as described above. The electric drive water pump 300 starts, and the motor and controller heat the coolant. The heated coolant flows through the chiller. The air conditioning heating circuit starts, and the refrigerant circuit activates the water source heat pump mode, absorbing heat from the motor and controller from the chiller and transferring it to the air conditioning heating circuit. When the heat dissipation of the drive motor and controller is sufficient, the PTC in the cab does not need to be activated; when the heat dissipation of the drive motor and controller is insufficient to meet the heating requirements, the PTC activates at low power to supplement the heating required by the cab. The system activation diagram is as follows. Figure 17 This control mode is an electric-driven water source heat pump mode, which uses the waste heat from the electric drive to heat the cab, effectively reducing PTC power and saving more energy.

[0184] Control mode thirteen specifically involves: electric water pump 300 being activated, refrigerant circuit operation, air conditioning heating coolant circuit activation, and radiator fan activation; the third and sixth ports of the six-way valve 400 being connected, and the fourth and fifth ports being connected; and the first and second ports of the five-way valve 500 being connected. Application scenarios include: low-temperature driving – cab heating, and electric water source heat pump.

[0185] In this scenario, the electric drive requires cooling, and the cab needs heating. The electric drive can utilize waste heat exceeding the cab's heating needs, so the six-way valve 400 and five-way valve 500 are activated as described above. The electric drive water pump 300 and radiator fan start, and the motor and controller heat the coolant. The heated coolant dissipates some heat through the radiator and then flows through the chiller. The air conditioning heating circuit is activated, and the refrigerant circuit starts in water source heat pump mode, absorbing heat from the chiller from the motor and controller and transferring it to the air conditioning heating circuit. The cab PTC is not activated; waste heat from the electric drive is used to heat the cab. The system connection diagram is as follows. Figure 18 This control mode is an electric-driven water source heat pump mode, which uses the waste heat from the electric drive to heat the cab. The PTC does not need to be turned on, making it more energy-efficient.

[0186] For the thermal management system of this application, the heat pump system architecture can be used with control modes one through thirteen.

[0187] Non-heat pump systems with waste heat recovery architecture can utilize control modes one through nine.

[0188] Non-heat pump systems without waste heat recovery architecture can use control modes one through five.

[0189] This application provides a general-purpose integrated thermal management water circuit module and control method for pure electric vehicles. The general-purpose integrated thermal management system for pure electric vehicles incorporates heat pumps, non-heat pumps, and waste heat utilization architectures, offering high versatility, shortening the development cycle of the platform's thermal management system, and reducing component quantification costs. By integrating the main components of the integrated thermal management system's water circuit—pumps, valves, heat exchangers, water temperature sensors, etc.—into one unit, the number of connecting pipes between components is reduced, resulting in a compact layout, fewer assembled components, significantly reduced layout complexity, and less assembly time.

[0190] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this 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 used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0192] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A thermal management water circuit integrated module, characterized in that, It includes: flow channel plate (100), battery water pump (200), electric water pump (300), six-way valve (400) and five-way valve (500). The thermal management water circuit integration module is provided with multiple interfaces, and the flow channel plate (100) is provided with multiple flow channels that connect 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 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 plurality of interfaces have an interface for connecting to at least one or more of the electric drive coolant circuit, the battery coolant circuit, and the air conditioning heating coolant circuit; 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 (c) and an eighth interface (a); the second valve port of the five-way valve (500) is led to the seventh interface (c) through a corresponding flow channel, and the seventh interface (c) is used to connect to the outlet of the electric drive coolant circuit; the first valve port of the five-way valve (500) is led to the eighth interface (a) through a corresponding flow channel, and the eighth interface (a) is used to connect to the radiator inlet.

2. The thermal management water circuit integrated module as described in claim 1, characterized in that: The flow channel between the second valve port and the seventh interface (c) of the five-way valve (500) is provided with an electric drive coolant circuit outlet water temperature sensor (T2), which is used to detect the outlet water temperature of the electric drive coolant circuit.

3. The thermal management water circuit integrated module as described in claim 1, characterized in that: 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; The interface includes a first interface (f), a second interface (e), a third interface (g), a fourth interface (h), a fifth interface (d), and a sixth interface (b). 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 (f) through a corresponding flow channel; the first interface (f) 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 (e) through the corresponding flow channel. The second interface (e) is used to connect to the outlet of the battery coolant circuit. The third valve port of the six-way valve (400) is led to the third interface (g) through the corresponding flow channel, and the fourth valve port is led to the fourth interface (h) through the corresponding flow channel. The fifth valve port of the six-way valve (400) is connected to the inlet of the electric water pump (300) through the corresponding flow channel, and the outlet of the electric water pump (300) is led to the fifth interface (d) through the corresponding flow channel. The fifth interface (d) is used to connect to the inlet of the electric coolant circuit. The sixth valve port of the six-way valve (400) is led to the sixth interface (b) through the corresponding flow channel, and the other path is connected to the fifth valve port of the five-way valve (500); the sixth interface (b) is used to connect to the radiator outlet.

4. The thermal management water circuit integrated module as described in claim 3, characterized in that: The flow channel between the second valve port and the second interface (e) of the six-way valve (400) is provided with a battery coolant circuit outlet water temperature sensor (T4), which is used to detect the inlet water temperature of the electric drive coolant circuit. The electric water pump (300) is provided with an electric water pump outlet water temperature sensor (T1) on the flow channel between the outlet and the fifth interface (d). The electric water pump outlet water temperature sensor (T1) is used to detect the outlet water temperature of the battery coolant circuit. A coolant outlet water temperature sensor (T5) is provided on the flow channel between the fourth valve port and the fourth interface (h) of the six-way valve (400).

5. The thermal management water circuit integrated module as described in claim 4, characterized in that: The thermal management water circuit integration module also 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 lead the corresponding flow channel medium to the corresponding interface.

6. The thermal management water circuit integrated module as described in claim 5, 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 inlet of the plate heat exchanger (600) through a corresponding flow channel.

7. The thermal management water circuit integrated module as described in claim 5, characterized in that: The cold water inlet of the plate heat exchanger (600) is led to the ninth interface (k) through the corresponding flow channel. The ninth interface (k) is used to connect to the outlet of the air conditioning heating coolant circuit. The cold water outlet of the plate heat exchanger (600) is led to the tenth interface (j) through a flow channel.

8. The thermal management water circuit integrated module as described in claim 7, characterized in that: The plate heat exchanger (600) is provided with an air conditioning heating coolant circuit outlet water temperature sensor (T6) on the flow channel between the cold test inlet and the ninth interface (k). The air conditioning heating coolant circuit outlet water temperature sensor (T6) is used to detect the outlet temperature of the air conditioning heating coolant circuit.

9. A vehicle thermal management system, characterized in that, It includes: The thermal management water circuit integrated module as described in any one of claims 1-8; The refrigerant circuit has its coolant inlet connected to the third interface (g) of the thermal management water circuit integrated module, and its coolant outlet connected to the fourth interface (h) of the thermal management water circuit integrated module. The electric drive coolant circuit has its inlet connected to the fifth interface (d) of the thermal management water circuit integrated module, and its outlet connected to the seventh interface (c). The battery coolant circuit has its circuit inlet connected to the first interface (f), the first interface (f) connected to the PTC inlet of the battery coolant circuit, and the circuit outlet connected to the second interface (e). The air conditioning heating coolant circuit has its outlet connected to the ninth interface (k) and its inlet connected to the tenth interface (j). The radiator has its inlet connected to the eighth interface (a) and its outlet connected to the sixth interface (b).

10. A control method for a vehicle thermal management system as described in claim 9, characterized in that, It includes the following steps: Obtain judgment information; the judgment information includes the vehicle's charging status, driving status, ambient temperature, cab heating command information, battery temperature, and electric drive temperature; Based on the judgment information, the control mode corresponding to the thermal management water circuit integration module is determined. The operation of the vehicle thermal management system is controlled according to the control mode described above.

11. The control method for the vehicle thermal management system as described in claim 10, characterized in that: When the vehicle is stationary and charging, the control mode is determined based on the ambient temperature and battery temperature. When the vehicle is in motion, the control mode is determined based on the ambient temperature, battery temperature, electric drive temperature, and cab heating command information.

12. The control method for the vehicle thermal management system as described in claim 11, characterized in that, When the vehicle is stationary and charging, a control mode is determined based on the ambient temperature and battery temperature, including the following steps: If the ambient temperature is greater than or equal to the normal temperature value 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 one. If the ambient temperature is lower than 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 two. If the ambient temperature is lower than 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 battery heat dissipation, which corresponds to control mode three.

13. The control method for the vehicle thermal management system as described in claim 12, characterized in that: The control mode one is as follows: the battery water pump (200) is turned on, the refrigerant circuit is running, the first and fourth valve ports of the six-way valve (400) are connected, and the second and third valve ports are connected. The second control mode is as follows: the battery water pump (200) is turned on, the PTC of the battery coolant circuit is turned on, and the first and second valve ports of the six-way valve (400) are connected. The control mode three is as follows: the battery water pump (200) and the electric water pump (300) are turned on, the radiator fan is turned on; the second and fifth valve ports of the six-way valve (400) are connected, and the first and sixth valve ports are connected; the first and second valve ports of the five-way valve (500) are connected.

14. The control method for the vehicle thermal management system as described in claim 12, characterized in that, When the vehicle is in motion, the control mode is determined based on the ambient temperature, battery temperature, electric drive temperature, and cab heating command 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 and electric drive cooling, which corresponds to control mode four. If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - electric drive cooling, which corresponds to control mode five. If the ambient temperature is lower than normal, 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, then the working scenario is low temperature driving - battery heating, electric drive heat storage, which corresponds to control mode six. If the ambient temperature is lower than normal, 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 and electric drive waste heat utilization, which corresponds to control mode seven.

15. The control method for the vehicle thermal management system as described in claim 14, characterized in that: The control mode four is as follows: the battery water pump (200) and the electric water pump (300) are turned on, the refrigerant circuit is running, and the radiator fan is turned on; the second and third valve ports of the six-way valve (400) are connected, the first and fourth valve ports are connected, and the fifth and sixth valve ports are connected; the first and second valve ports of the five-way valve (500) are connected. The control mode five is as follows: the electric water pump (300) is turned on, the radiator fan is turned on; the fifth and sixth valve ports of the six-way valve (400) are connected; the first and second valve ports of the five-way valve (500) are connected. The control mode six is ​​as follows: the battery water pump (200) and the electric water pump (300) are turned on, and the PTC of the battery coolant circuit is turned on; the second valve port and the first valve port of the six-way valve (400) are connected, and the fifth 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) and the sixth valve port of the six-way valve (400) are connected. The control mode seven is as follows: the battery water pump (200) and the electric water pump (300) are turned on, and the refrigerant circuit is running; the second and third valve ports of the six-way valve (400) are connected, the first and sixth valve ports are connected, and the fourth and fifth valve ports are connected; the fifth and second valve ports of the five-way valve (500) are connected.

16. The control method for the vehicle thermal management system as described in claim 15, characterized in that, When the vehicle is in motion, the control mode is determined based on the ambient temperature, battery temperature, electric drive temperature, and cab heating command information, and also includes the following steps: If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the working scenario is low temperature driving - cab heating and electric drive waste heat utilization. This working scenario corresponds to control mode eight. If the ambient temperature is lower than normal, the battery temperature is lower than the minimum value of the first design range, and 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 corresponding control modes for the working scenario include control mode nine, control mode ten, and control mode eleven. If the ambient temperature is lower than normal, the battery temperature is within the first design range, and 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, then the corresponding control modes for the working scenario include control mode twelve and control mode thirteen.

17. The control method for the vehicle thermal management system as described in claim 16, characterized in that: The control mode eight is specifically as follows: the electric water pump (300) is turned on, and the air conditioning heating coolant circuit is turned on; the fifth and sixth valve ports of the six-way valve (400) are connected; the fifth and fourth valve ports of the five-way valve (500) are connected, and the second and third valve ports are connected; the fifth valve port of the five-way valve (500) and the sixth valve port of the six-way valve (400) are connected. The control mode nine is as follows: the battery water pump (200) and the electric water pump (300) are turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the second and third valve ports of the six-way valve (400) are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the fifth and fourth valve ports of the five-way valve (500) are connected, and the second and third valve ports 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 10 specifically refers to the following: the battery water pump (200) and the electric water pump (300) are turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the third and second valve ports of the six-way valve (400) are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the fifth and second valve ports of the five-way valve (500) are connected; and the fifth valve port of the five-way valve (500) and the sixth valve port of the six-way valve (400) are connected. The control mode eleven is as follows: the battery water pump (200) and the electric water pump (300) are turned on, the refrigerant circuit is running, the air conditioning heating coolant circuit is turned on, and the radiator fan is turned on; the third and second valve ports of the six-way valve (400) are connected, the fourth and fifth valve ports are connected, and the first and sixth valve ports are connected; the first and second valve ports of the five-way valve (500) are connected. The control mode 12 is as follows: the electric water pump (300) is turned on, the refrigerant circuit is running, and the air conditioning heating coolant circuit is turned on; the third and sixth valve ports of the six-way valve (400) are connected, and the fourth and fifth valve ports are connected; the fifth and second valve ports 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 as follows: the electric water pump (300) is turned on, the refrigerant circuit is running, the air conditioning heating coolant circuit is turned on, and the radiator fan is turned on; the third and sixth valve ports of the six-way valve (400) are connected, and the fourth and fifth valve ports are connected; the first and second valve ports of the five-way valve (500) are connected.

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