Motor waste heat, battery cooling and passenger compartment integrated thermal management system based on multi-way valve

Abstract

The invention discloses a motor waste heat, battery cooling and passenger compartment integrated thermal management system based on a multi-way valve, and belongs to the technical field of new energy automobile thermal management. The system comprises a whole vehicle thermal control module and an intelligent multi-way valve. The whole vehicle heat control module collects whole vehicle global heat management parameters of a vehicle in real time and judges heat management modes according to the whole vehicle global heat management parameters and preset temperature control logic, and the heat management modes comprise a summer high-temperature refrigeration mode, a winter low-temperature waste heat recovery mode and a spring and autumn steady-state energy-saving mode. Meanwhile, a flow channel regulation and control instruction is generated in combination with an accounting result of the heat or the cold and a heat management strategy library; and the intelligent multi-way valve switches the on-off state of the flow channel and the flow distribution ratio of the flow channel in a self-adaptive mode according to the flow channel regulation and control instruction. Integrated cooperative control of motor waste heat recovery, battery temperature control and passenger compartment temperature adjustment is achieved, the energy utilization rate is effectively increased, battery safety and endurance are guaranteed, and system energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology for new energy vehicles, specifically to an integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve. Background Technology

[0002] The thermal management performance of new energy vehicles directly affects the vehicle's power output, the safe lifespan of the power battery, and the driving range. The drive motor, power battery, and passenger compartment are the core temperature control components, each with different and interconnected thermal management requirements. Currently, most new energy vehicles still use separate thermal management subsystems to achieve motor cooling, battery temperature control, and passenger compartment temperature regulation. The waste heat generated by the motor is not effectively recovered and utilized. In winter, passenger compartment heating and battery preheating require the separate activation of a PTC auxiliary heater, significantly consuming power battery energy and resulting in a significant reduction in the vehicle's driving range. Furthermore, the redundancy of valves and pipelines in these separate systems increases the complexity of vehicle layout and the system's failure rate.

[0003] To improve the shortcomings of discrete systems, some solutions attempt to build an integrated thermal management architecture. However, such solutions mostly rely on single parameters such as ambient temperature and component temperature to determine the thermal management mode and switch the flow channels on and off. They do not combine the actual heat and cold demand of each temperature-controlled object for quantitative calculation. The flow channel distribution lacks a scientific quantitative basis and does not consider the heat loss caused by pipeline heat transfer loss. This can easily lead to the problem of heat supply and demand imbalance during waste heat recovery, resulting in insufficient temperature control accuracy and low efficiency of motor waste heat recovery. It is impossible to achieve precise coordinated control of motor waste heat utilization, battery temperature control and passenger compartment temperature regulation, and it is difficult to balance the temperature control effect and energy utilization efficiency of the whole vehicle thermal management. Summary of the Invention

[0004] This invention provides an integrated thermal management system for motor waste heat, battery cooling and passenger compartment based on a multi-way valve to solve the problems of inefficient waste heat recovery, lack of quantitative basis for temperature control and inability to accurately coordinate and regulate the existing thermal management system.

[0005] To address the aforementioned problems, according to one aspect of the present invention, an integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve is disclosed, comprising a vehicle thermal control module and an intelligent multi-way valve, wherein the vehicle thermal control module and the intelligent multi-way valve are connected via a CAN bus for communication.

[0006] The vehicle thermal control module collects the vehicle's overall thermal management parameters in real time, determines the thermal management mode based on the preset temperature control logic, and generates corresponding flow channel control commands to be sent to the intelligent multi-way valve.

[0007] The intelligent multi-way valve adaptively switches the flow channel on / off state and flow distribution ratio according to the flow channel control command, and is used for motor waste heat management and utilization, power battery temperature control and passenger cabin temperature regulation.

[0008] Furthermore, the vehicle-wide thermal management parameters are acquired by onboard temperature sensors and flow sensors in the coolant circulation loop, and transmitted in real time to the vehicle thermal control module via the CAN bus, including the drive motor temperature. MCU (motor controller) temperature Power battery pack temperature Crew cabin temperature Coolant temperature and external ambient temperature .

[0009] Furthermore, the preset temperature control logic is as follows:

[0010] When the passenger cabin temperature is greater than the preset cabin cooling target temperature Or the power battery pack temperature is greater than the preset battery cooling start threshold. At that time, the thermal management mode is the summer high-temperature cooling mode;

[0011] When the external ambient temperature is less than the preset low temperature threshold The power battery pack temperature is less than the preset battery preheating start-up threshold. Or the cabin temperature is less than the preset target cabin heating temperature. At that time, the thermal management mode is the winter low-temperature waste heat recovery mode;

[0012] Otherwise, the thermal management mode is the spring and autumn steady-state energy-saving mode.

[0013] Furthermore, the method for generating the flow channel control command is as follows:

[0014] The flow channel on / off combination logic under the current thermal management mode is extracted from the thermal management strategy library. The thermal management strategy library is used to store the on / off states of all flow channel on / off control interfaces that are pre-set manually and correspond one-to-one with the summer high temperature cooling mode, the winter low temperature waste heat recovery mode, and the spring and autumn steady-state energy-saving mode, i.e., the flow channel on / off combination logic. At the same time, the waste heat of the motor, the heat / cooling required of the power battery and the heat / cooling required of the passenger compartment are calculated based on the thermal management parameters of the whole vehicle. The flow distribution ratio coefficient of all open flow channel ports is calculated according to the opening and closing states of each flow channel port in the flow channel on / off combination logic, based on the quantitative basis of the waste heat of the motor, the heat / cooling required of the power battery and the heat / cooling required of the passenger compartment.

[0015] The flow channel on / off combination logic is converted into a multi-way valve position control signal, and the flow distribution ratio coefficient is converted into an intelligent multi-way valve opening control signal. Based on this, a flow channel control command containing the multi-way valve position control signal and the opening control signal is generated and sent to the intelligent multi-way valve for execution via the CAN bus.

[0016] The formula for calculating the waste heat of the motor is:

[0017] ;

[0018] in, Waste heat from the motor For the heat exchange efficiency of the motor coolant, For integration time, To take the positive operator (only when) or Calculate the temperature difference only if the time is right; otherwise, calculate 0. and These are the thermal capacities of the drive motor and the MCU, respectively.

[0019] The formula for calculating the heat / cooling requirements of the power battery is as follows:

[0020] ;

[0021] in, This refers to the heat or cooling required by the power battery (the heat required by the power battery is calculated in the low-temperature waste heat recovery mode in winter, and the cooling required by the power battery is calculated in the high-temperature cooling mode in summer). For the heat capacity of the power battery, The battery thermal capacity weight is used to characterize the battery aging state, and The value ranges from 0.9 to 1.1. For battery temperature difference, The sign function is +1 for heat demand, -1 for cooling demand, and 0 for steady state.

[0022] The battery temperature difference is defined according to the thermal management mode as follows:

[0023] ;

[0024] in, To preset the target battery temperature, and within and between;

[0025] The formula for calculating the required heat / cooling capacity of the crew cabin is as follows:

[0026] ;

[0027] in, The heat requirement and cooling requirement of the passenger cabin are calculated as follows: (Heat requirement of the passenger cabin in winter low-temperature waste heat recovery mode, and cooling requirement of the passenger cabin in summer high-temperature cooling mode). The heat transfer coefficient of the crew compartment. For the heat exchange area of ​​the crew compartment, The weighting of the cabin heat transfer coefficient, which characterizes the number of occupants in the crew compartment, and The value ranges from 0.8 to 1.2. Temperature difference in the crew cabin;

[0028] The temperature difference in the crew cabin is defined according to the thermal management mode as follows:

[0029] ;

[0030] in, To preset the target temperature of the passenger cabin, and between and between;

[0031] The calculation rule for the flow allocation ratio coefficient is as follows:

[0032] In summer high-temperature cooling mode, the power battery pack temperature control channel, passenger compartment temperature control channel, radiator cooling channel, and motor waste heat recovery channel are activated. These channels are branch lines. The flow distribution ratio coefficient for each activated channel port is: [Flow distribution ratio coefficient for motor waste heat recovery channel]. for Flow distribution ratio coefficient of battery pack temperature control channel for Flow distribution ratio coefficient of the crew cabin temperature control channel for Flow distribution ratio coefficient of radiator heat dissipation channel Matched to the total heat exchange and cooling requirements, meeting the needs. ,and The maximum value is 1;

[0033] In winter low-temperature waste heat recovery mode, the motor waste heat recovery channel, the power battery pack temperature control channel, and the passenger compartment temperature control channel are activated. Simultaneously, when... At that time, the flow distribution ratio coefficient for each open flow channel port is: Flow distribution ratio coefficient for the motor waste heat recovery flow channel. The flow distribution ratio coefficient of the battery pack temperature control channel is 1. for Flow distribution ratio coefficient of the crew cabin temperature control channel for ;

[0034] when At that time, the flow distribution ratio coefficient for each open flow channel port is: Flow distribution ratio coefficient for the motor waste heat recovery flow channel. The flow distribution ratio coefficient of the battery pack temperature control channel is 1. for Flow distribution ratio coefficient of the crew cabin temperature control channel for Flow distribution ratio coefficient of radiator heat dissipation channel for ;

[0035] when At that time, the flow distribution ratio coefficients for each open flow channel port are as follows: the flow distribution ratio coefficients for the motor waste heat recovery flow channel and the auxiliary heating and heat replenishment flow channel are both 1, and the flow distribution ratio coefficient for the battery pack temperature control flow channel is... for Flow distribution ratio coefficient of the crew cabin temperature control channel for ;

[0036] In the spring and autumn steady-state energy-saving mode, the radiator cooling channel and the motor waste heat recovery channel are opened. The flow distribution ratio coefficient for each opened channel port is as follows: Flow distribution ratio coefficient for the motor waste heat recovery channel. Flow distribution ratio coefficient with radiator heat dissipation channel It is 1:1, and The value is 0.8-1, which is used to ensure that the drive motor and motor controller are stable within the safe operating range and avoid overheating.

[0037] Furthermore, the flow channel on / off combination logic of the summer high temperature cooling mode is as follows: the intelligent multi-way valve closes the auxiliary heating and heat replenishment branch, and opens the power battery temperature control branch, the passenger compartment temperature control branch, the radiator heat dissipation branch and the motor waste heat recovery branch.

[0038] The flow channel on / off combination logic of the winter low temperature waste heat recovery mode is as follows: the intelligent multi-way valve opens the motor waste heat recovery branch, the power battery temperature control branch and the passenger compartment temperature control branch, and closes the radiator heat dissipation branch and the auxiliary heating supplementary heat dissipation branch.

[0039] The flow channel on / off combination logic of the Spring and Autumn steady-state energy-saving mode is as follows: the intelligent multi-way valve opens the motor waste heat recovery branch and the radiator heat dissipation branch, and closes the power battery temperature control branch, the passenger compartment temperature control branch and the auxiliary heating supplementary heat dissipation branch.

[0040] Furthermore, the waste heat of the motor Power batteries require heat The crew cabin requires heat When a supply-demand imbalance occurs, the vehicle's thermal control module performs heat supply-demand balance control, whereby the heat supply-demand balance is:

[0041] like If a heat gap is detected, the vehicle thermal control module will control the PTC auxiliary heater to start heating the circulating coolant to replenish the heat gap, and at the same time, the auxiliary heating supplementary heat supply branch will be activated.

[0042] like If excess heat is detected, the vehicle's thermal control module will activate the radiator cooling circuit to output the excess heat to the external environment.

[0043] Furthermore, the intelligent multi-way valve is an integrated electrically controlled multi-way valve, which includes at least 5 flow channel on / off control interfaces, corresponding to the motor waste heat recovery branch, the power battery pack temperature control branch, the passenger compartment temperature control branch, the radiator heat dissipation branch, and the auxiliary heating supplementary heat dissipation branch, respectively. The intelligent multi-way valve has a built-in flow regulating actuator to realize the flow distribution ratio control of each flow channel port.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. This invention abandons the traditional separate thermal management subsystem architecture and integrates motor waste heat management, power battery temperature control and passenger compartment temperature adjustment functions through intelligent multi-way valves, reducing valve and pipeline redundancy, simplifying the difficulty of vehicle layout, and reducing system failure rate; at the same time, it effectively recovers and utilizes motor operating waste heat, reduces the start frequency and energy consumption of PTC auxiliary heater in winter, and improves the driving range of power battery.

[0046] 2. This invention breaks through the limitations of traditional integrated solutions that rely solely on temperature as a single parameter for control. It quantitatively calculates the residual heat of the motor, the heat or cooling required by the power battery and the passenger compartment based on the thermal management parameters of the entire vehicle, providing a scientific quantitative basis for the distribution of flow channels and improving the temperature control accuracy of thermal management.

[0047] 3. This invention designs a multi-mode flow channel on / off combination logic and an adapted flow distribution ratio calculation rule, and considers pipeline heat transfer loss and executes heat supply and demand balance control, so as to realize precise coordinated regulation of motor waste heat utilization, power battery temperature control and passenger compartment temperature adjustment, effectively improve the energy utilization rate of the vehicle thermal management system, and take into account both temperature control effect and energy saving. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the 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.

[0049] Figure 1 This is a system schematic diagram of the present invention. Detailed Implementation

[0050] Detailed Description of Embodiments To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0051] In Examples 1-3, as Figure 1 The aforementioned integrated thermal management system for motor waste heat recovery, battery cooling, and passenger compartment based on a multi-way valve includes a vehicle thermal control module, an intelligent multi-way valve, and supporting components such as a PTC auxiliary heater, a drive motor + motor controller (MCU), a power battery pack, a passenger compartment HVAC air conditioning system, a front-end heat dissipation module, an electronic coolant pump, and an expansion tank. All components are interconnected via a coolant circulation loop. The intelligent multi-way valve integrates the on / off control and flow regulation interfaces for the motor waste heat recovery branch, the auxiliary heating supplementary heating branch, the radiator cooling branch, the power battery temperature control branch, and the passenger compartment temperature control branch. The vehicle thermal control module and each electronic control component communicate via a CAN bus, working together to achieve integrated and coordinated control of motor waste heat recovery, power battery temperature control, and passenger compartment temperature regulation. The entire process utilizes the circulation of coolant within each pathway branch to achieve heat transfer and temperature regulation of the controlled objects.

[0052] Furthermore, the following example, using the winter low-temperature waste heat recovery mode as Example 1, fully describes the working process of the winter low-temperature waste heat recovery mode of this system:

[0053] The vehicle thermal control module collects real-time thermal management parameters across the entire vehicle, including drive motor temperature, through onboard sensors. MCU temperature Power battery pack temperature Crew cabin temperature Coolant temperature and external ambient temperature All parameters are transmitted in real time to the vehicle's thermal control module via the CAN bus; when the collected external ambient temperature... <Preset low temperature threshold, or power battery pack temperature> <Preset battery preheating start threshold, or passenger cabin temperature> When the preset target temperature for cabin heating is reached, the vehicle thermal control module determines that the system enters the winter low-temperature waste heat recovery mode based on the preset temperature control logic. The vehicle thermal control module extracts the flow channel on / off combination logic for this mode from the thermal management strategy library, controls the intelligent multi-way valve to open the motor waste heat recovery branch, the power battery temperature control branch, and the passenger compartment temperature control branch, and close the radiator cooling branch and the auxiliary heating supplementary heating branch. At the same time, it calculates the motor waste heat based on the collected parameters. Power batteries require heat The crew cabin requires heat. It calculates the flow distribution ratio coefficient of each open branch, converts it into the valve position and opening degree control signal of the intelligent multi-way valve, and generates flow channel regulation command to be sent to the intelligent multi-way valve.

[0054] An electronic cooling water pump drives the coolant to flow in the coolant circulation loop. The coolant is then distributed according to flow ratios via an intelligent multi-way valve into the motor waste heat recovery branch to absorb the waste heat generated by the drive motor and MCU operation. It then flows into the power battery temperature control branch for heat exchange with the power battery pack, and finally into the passenger compartment temperature control branch for heat exchange with the passenger compartment HVAC system, thus preheating the power battery and heating the passenger compartment, completing the recovery and utilization of heat. If the motor waste heat is calculated... The sum of the heat required by the power battery and the heat required by the passenger compartment indicates a heat gap in the vehicle's thermal control module. It immediately activates the PTC auxiliary heater and initiates the auxiliary heating circuit to heat the circulating coolant, ensuring the temperature control requirements of the power battery and passenger compartment are met. If the motor has excess heat... >The sum of the heat required by the power battery and the heat required by the passenger compartment determines that there is excess heat. The vehicle thermal control module connects the radiator cooling branch and transfers the excess heat to the front cooling module through the coolant, releasing it to the external environment to ensure system thermal balance.

[0055] Furthermore, the working process of the summer high-temperature cooling mode of this system will be fully described below using the summer high-temperature cooling mode as Example 2:

[0056] The vehicle thermal control module collects real-time thermal management parameters across the entire vehicle, including drive motor temperature, through onboard sensors. MCU temperature Power battery pack temperature Crew cabin temperature Coolant temperature and external ambient temperature All parameters are transmitted in real time to the vehicle's thermal control module via the CAN bus; when the passenger compartment temperature is collected... >Preset cabin cooling target temperature Or the temperature of the power battery pack >Preset battery cooling start threshold At this time, the vehicle thermal control module determines that the system enters the summer high-temperature cooling mode based on the preset temperature control logic; the vehicle thermal control module extracts the flow channel on / off combination logic for this mode from the thermal management strategy library, controls the intelligent multi-way valve to close the auxiliary heating supplementary heat supply branch, and opens the power battery temperature control branch, passenger compartment temperature control branch, radiator heat dissipation branch and motor waste heat recovery branch; at the same time, it calculates the motor waste heat based on the collected parameters. Power batteries require cooling The crew cabin requires cooling capacity. The flow distribution ratio coefficient of each open branch is calculated according to the rules, and converted into the valve position and opening degree control signal of the intelligent multi-way valve. The flow channel regulation command is then sent to the intelligent multi-way valve.

[0057] An electronic cooling water pump drives the coolant to flow in the coolant circulation loop. First, the coolant flows through the intelligent multi-way valve into the motor waste heat recovery branch according to the flow distribution ratio to absorb the waste heat generated by the drive motor and MCU operation. Then, it flows into the power battery temperature control branch to exchange heat with the power battery pack through the coolant. Finally, it flows into the passenger compartment temperature control branch to exchange heat with the passenger compartment HVAC air conditioning system. Then, the heat from the coolant is released to the external environment through the front-end heat dissipation module. The flow distribution ratio of the radiator heat dissipation branch matches the total heat exchange and cooling requirements, ensuring the cooling effect of the coolant circulation and realizing the integrated coordination of motor cooling, power battery cooling and passenger compartment cooling.

[0058] Furthermore, the working process of the spring and autumn steady-state energy-saving mode of this system will be fully described below using the spring and autumn steady-state energy-saving mode as Example 3:

[0059] The vehicle thermal control module collects real-time thermal management parameters across the entire vehicle, including drive motor temperature, through onboard sensors. MCU temperature Power battery pack temperature Crew cabin temperature Coolant temperature and external ambient temperature All parameters are transmitted in real time to the vehicle thermal control module via the CAN bus. When the collected parameters do not meet the trigger conditions for either the summer high-temperature cooling mode or the winter low-temperature waste heat recovery mode (i.e., the power battery pack temperature and passenger compartment temperature are both within their respective preset normal ranges, and the external ambient temperature is within a suitable range), the vehicle thermal control module determines that the system enters the spring and autumn steady-state energy-saving mode based on the preset temperature control logic. The vehicle thermal control module extracts the flow channel on / off combination logic for this mode from the thermal management strategy library, controls the intelligent multi-way valve to open the motor waste heat recovery branch and the radiator cooling branch, and closes the power battery temperature control branch, the passenger compartment temperature control branch, and the auxiliary heating supplementary heat branch. At the same time, it calculates the motor waste heat based on the collected parameters. Calculate the flow distribution ratio coefficient (motor waste heat recovery branch coefficient) of the two open branches according to the 1:1 ratio rule. The value is 0.8-1), which is converted into the valve position and opening control signal of the intelligent multi-way valve, and the flow channel regulation command is generated and sent to the intelligent multi-way valve.

[0060] An electronic cooling water pump drives the coolant to flow in the coolant circulation loop. The coolant only flows into the motor waste heat recovery branch to absorb the basic waste heat generated by the operation of the drive motor and MCU. After passing through an intelligent multi-way valve, it flows into the radiator cooling branch at a 1:1 flow ratio. The waste heat carried by the coolant is released to the external environment through the front-end heat dissipation module. The entire coolant circulation only performs basic heat dissipation and temperature regulation for the drive motor and MCU. There is no need to perform temperature control for the power battery pack and passenger compartment, achieving zero redundant energy consumption operation of the system. At the same time, it ensures that the drive motor and motor controller are stable within the safe operating range and avoids overheating.

[0061] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve, comprising a vehicle thermal control module and an intelligent multi-way valve, wherein the vehicle thermal control module and the intelligent multi-way valve are connected via a CAN bus for communication, characterized in that, The vehicle thermal control module collects the vehicle's overall thermal management parameters in real time, determines the thermal management mode based on the preset temperature control logic, and generates corresponding flow channel control commands to be sent to the intelligent multi-way valve. The intelligent multi-way valve adaptively switches the flow channel on / off state and flow distribution ratio according to the flow channel control command, and is used for motor waste heat management and utilization, power battery temperature control and passenger cabin temperature regulation.

2. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 1, characterized in that, The vehicle's overall thermal management parameters include drive motor temperature, MCU temperature, power battery pack temperature, passenger compartment temperature, coolant temperature, and external ambient temperature.

3. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 2, characterized in that, The preset temperature control logic is as follows: When the passenger cabin temperature is greater than the preset target temperature for cabin cooling or the power battery pack temperature is greater than the preset battery cooling start threshold, the thermal management mode is the summer high temperature cooling mode. When the external ambient temperature is less than the preset low temperature judgment threshold, the power battery pack temperature is less than the preset battery preheating start threshold, or the passenger compartment temperature is less than the preset cabin heating target temperature, the thermal management mode is the winter low temperature waste heat recovery mode. Otherwise, the thermal management mode is the spring and autumn steady-state energy-saving mode.

4. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 3, characterized in that, The method for generating the flow channel control command is as follows: Extract the flow channel on / off combination logic under the current thermal management mode from the thermal management strategy library. At the same time, calculate the residual heat of the motor, the required heat / cooling of the power battery and the required heat / cooling of the passenger compartment based on the whole vehicle thermal management parameters. Using the residual heat of the motor, the required heat / cooling of the power battery and the required heat / cooling of the passenger compartment as the quantitative basis, calculate the flow distribution ratio coefficient of all open flow channel ports according to the opening and closing state of each flow channel port in the flow channel on / off combination logic. The flow channel on / off combination logic is converted into a multi-way valve position control signal, and the flow distribution ratio coefficient is converted into an intelligent multi-way valve opening control signal. Based on this, a flow channel control command containing the multi-way valve position control signal and the opening control signal is generated.

5. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 4, characterized in that, The flow channel on / off combination logic of the summer high temperature cooling mode is as follows: the intelligent multi-way valve closes the auxiliary heating and heat replenishment branch, and opens the power battery temperature control branch, the passenger compartment temperature control branch, the radiator heat dissipation branch and the motor waste heat recovery branch.

6. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 4, characterized in that, The flow channel on / off combination logic of the winter low temperature waste heat recovery mode is as follows: the intelligent multi-way valve opens the motor waste heat recovery branch, the power battery temperature control branch and the passenger compartment temperature control branch, and closes the radiator heat dissipation branch and the auxiliary heating supplementary heat dissipation branch.

7. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 4, characterized in that, The flow channel on / off combination logic of the Spring and Autumn steady-state energy-saving mode is as follows: the intelligent multi-way valve opens the motor waste heat recovery branch and the radiator heat dissipation branch, and closes the power battery temperature control branch, the passenger compartment temperature control branch and the auxiliary heating supplementary heat dissipation branch.

8. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 6, characterized in that, The waste heat of the motor Power batteries require heat The crew cabin requires heat When a supply-demand imbalance occurs, the vehicle's thermal control module performs heat supply-demand balance control, whereby the heat supply-demand balance is: like If a heat gap is detected, the vehicle thermal control module will control the PTC auxiliary heater to start heating the circulating coolant to replenish the heat gap, and at the same time, the auxiliary heating supplementary heat supply branch will be activated. like If excess heat is detected, the vehicle's thermal control module will activate the radiator cooling circuit to output the excess heat to the external environment.

9. The integrated thermal management system for motor waste heat, battery cooling, and passenger compartment based on a multi-way valve according to claim 1, characterized in that, The intelligent multi-way valve is an integrated electrically controlled multi-way valve, containing at least 5 flow channel on / off control interfaces, and the intelligent multi-way valve has a built-in flow regulating actuator to realize the flow distribution ratio control of each flow channel port.

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