Multi-three-way valve time-phased control method and equipment

Abstract

The invention discloses a multi-three-way valve time-phased control method and equipment, and relates to the technical field of three-way valve control, and the method comprises the steps: determining a heating request of a heat management system, so as to determine a heat target needing to be provided by the heat management system, provide a reference for subsequent control, and ensure that the heat management response meets the heating requirements of a cab and a battery; to-be-monitored water temperature parameters are determined on the basis of the heating request, key water temperature data are obtained, so that the priority sequence of each three-way valve is dynamically determined according to the water temperature data, a heat distribution path is optimized, simultaneous action of multiple valves is avoided, energy consumption is reduced, and efficiency is improved; and finally, the three-way valves are sequentially controlled to be switched on or switched off based on the priority sequence, the to-be-monitored water temperature parameters control the switching-on opening degrees of the three-way valves, accurate control is achieved, and the stability of the thermal management system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of three-way valve control, and particularly to a method and device for controlling multiple three-way valves at different times. Background Art

[0002] As an important branch of new energy commercial vehicles, the heat management system of range-extended trucks needs to simultaneously meet multiple requirements such as engine waste heat recovery, cab heating, and power battery thermal management. With the improvement of vehicle intelligence and energy-saving requirements, the complexity and control accuracy of the heat management system have increased significantly. Among them, as the core actuator for water circuit switching, the control logic of the three-way valve directly determines the heat distribution efficiency and the reliability of the heat management system.

[0003] In scenarios such as low-temperature startup and high-load operation, the demand for simultaneous triggering of three-way valve switching in multiple circuits occurs frequently. Multiple three-way valves adopt independent linear control. Multiple three-way valves receive instructions and start simultaneously at the same time. The starting current of the three-way valve motors is superimposed, exceeding the instantaneous load capacity of the on-vehicle 24V power supply, resulting in the corresponding three-way valves being unable to reach the target position (stuck or stopping halfway) due to insufficient power supply, causing cab heating failure, the battery being unable to be heated or cooled, and even leading to a decline in battery performance and a failure in the circuit switching of the heat management system. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and device for controlling multiple three-way valves at different times, which can determine the priority sequence of each three-way valve by using the water temperature parameters to be monitored, optimize the heat distribution path, avoid simultaneous operation of multiple valves, reduce energy consumption and improve efficiency, and sequentially control the opening or closing of each three-way valve based on the priority sequence and control the opening degree of each three-way valve by the water temperature parameters to be monitored to achieve precise control and ensure the stability of the heat management system.

[0005] In the first aspect, the present application discloses a method for controlling multiple three-way valves at different times, including:

[0006] Determine the heating request of the heat management system; wherein, the heating request includes any one of separate heating of the cab, separate heating of the battery, and heating of both the cab and the battery;

[0007] Based on the heating request, determine the water temperature parameters to be monitored; wherein, the water temperature parameter to be monitored corresponding to separate heating of the cab is the engine water temperature, and the water temperature parameters to be monitored corresponding to separate heating of the battery and heating of both the cab and the battery are both the engine water temperature and the battery water temperature;

[0008] Based on the water temperature parameters to be monitored, determine the priority sequence of multiple three-way valves;

[0009] Based on the priority sequence and the water temperature parameters to be monitored, sequentially control the actions of multiple three-way valves.

[0010] Optionally, multiple of the three-way valves include a first three-way valve for the engine circuit, a second three-way valve for the cab heating circuit, and a third three-way valve for the battery circuit, and the heating request is for separate cab heating;

[0011] Determine the priority sequence of multiple three-way valves based on the water temperature parameter to be monitored, including:

[0012] If the engine water temperature is greater than a first preset temperature threshold, determine that the priority sequence is the second three-way valve > the first three-way valve > the third three-way valve;

[0013] If the engine water temperature is less than the first preset temperature threshold, determine that the priority sequence is the first three-way valve > the second three-way valve > the third three-way valve.

[0014] Optionally, control the actions of multiple three-way valves in sequence based on the priority sequence and the water temperature parameter to be monitored, including:

[0015] If the engine water temperature is greater than the first preset temperature threshold, control the first three-way valve to conduct and the second and third three-way valves to be both shut off based on the priority sequence of the second three-way valve > the first three-way valve > the third three-way valve;

[0016] If the engine water temperature is less than the first preset temperature threshold, control the first, second, and third three-way valves to be all shut off based on the priority sequence of the first three-way valve > the second three-way valve > the third three-way valve;

[0017] Wherein, a delay time is set between the controls of the first three-way valve, the second three-way valve, and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

[0018] Optionally, multiple of the three-way valves include a first three-way valve for the engine circuit, a second three-way valve for the cab heating circuit, and a third three-way valve for the battery circuit, and the heating request is for separate battery heating;

[0019] Determine the priority sequence of multiple three-way valves based on the water temperature parameter to be monitored, including:

[0020] If the engine water temperature is greater than a first preset temperature threshold and the battery water temperature is greater than a second preset temperature threshold, determine that the priority sequence is the third three-way valve > the second three-way valve > the first three-way valve;

[0021] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, determine that the priority sequence is that the third three-way valve is greater than the second three-way valve and the second three-way valve is greater than the first three-way valve;

[0022] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, determine that the priority sequence is that the third three-way valve is greater than the second three-way valve and the second three-way valve is greater than the first three-way valve;

[0023] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, determine that the priority sequence is that the first three-way valve is greater than the second three-way valve and the second three-way valve is greater than the third three-way valve.

[0024] Optionally, based on the priority sequence and the water temperature parameter to be monitored, control the actions of multiple three-way valves in sequence, including:

[0025] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, based on the priority sequence that the third three-way valve is greater than the second three-way valve and the second three-way valve is greater than the first three-way valve, control the first three-way valve to conduct, the second three-way valve to cut off, and the third three-way valve to conduct;

[0026] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, based on the priority sequence that the third three-way valve is greater than the second three-way valve and the second three-way valve is greater than the first three-way valve, control the first three-way valve, the second three-way valve, and the third three-way valve to all conduct;

[0027] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, based on the priority sequence that the third three-way valve is greater than the second three-way valve and the second three-way valve is greater than the first three-way valve, control the first three-way valve and the second three-way valve to both cut off and the third three-way valve to conduct;

[0028] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, based on the priority sequence that the first three-way valve is greater than the second three-way valve and the second three-way valve is greater than the third three-way valve, control the first three-way valve to cut off, and the second three-way valve and the third three-way valve to both conduct;

[0029] Wherein, a delay time is set between the controls of the first three-way valve, the second three-way valve, and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

[0030] Optionally, multiple of the three-way valves include a first three-way valve for the engine circuit, a second three-way valve for the cab heating circuit, and a third three-way valve for the battery circuit, and the heating request is for both the cab and the battery to be heated;

[0031] Determine the priority sequence of multiple three-way valves based on the water temperature parameter to be monitored, including:

[0032] If the engine water temperature is greater than a first preset temperature threshold and the battery water temperature is greater than a second preset temperature threshold, determine that the priority sequence is the third three-way valve > the second three-way valve > the first three-way valve;

[0033] If the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than a third preset temperature threshold, determine that the priority sequence is the first three-way valve > the second three-way valve > the third three-way valve;

[0034] If the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the third preset temperature threshold, determine that the priority sequence is the third three-way valve > the first three-way valve > the second three-way valve;

[0035] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, determine that the priority sequence is the third three-way valve > the second three-way valve > the first three-way valve;

[0036] If the engine water temperature is less than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, determine that the priority sequence is the second three-way valve > the third three-way valve > the first three-way valve;

[0037] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, determine that the priority sequence is the third three-way valve > the second three-way valve > the first three-way valve;

[0038] Wherein, the second preset temperature threshold is greater than the third preset temperature threshold.

[0039] Optionally, control the actions of multiple three-way valves in sequence based on the priority sequence and the water temperature parameter to be monitored, including:

[0040] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, control the first three-way valve to conduct, the second three-way valve to shut off, and the third three-way valve to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve;

[0041] If the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, control the first three-way valve to conduct, the second three-way valve to conduct 50%, and the third three-way valve to conduct based on the priority sequence of the first three-way valve > the second three-way valve > the third three-way valve;

[0042] If the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the third preset temperature threshold, control the first three-way valve to conduct, the second three-way valve to conduct 75%, and the third three-way valve to conduct based on the priority sequence of the third three-way valve > the first three-way valve > the second three-way valve;

[0043] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, control the first three-way valve and the second three-way valve to shut off and the third three-way valve to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve;

[0044] If the engine water temperature is less than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, control the first three-way valve to shut off, the second three-way valve to conduct 50%, and the third three-way valve to conduct based on the priority sequence of the second three-way valve > the third three-way valve > the first three-way valve;

[0045] If the engine water temperature is less than the first preset temperature threshold, the battery water temperature is less than the third preset temperature threshold, control the first three-way valve to shut off, the second three-way valve to conduct 75%, and the third three-way valve to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve;

[0046] Wherein, a delay time is set between the controls of the first three-way valve, the second three-way valve, and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

[0047] Optionally, after controlling the actions of multiple three-way valves in sequence based on the priority sequence and the water temperature parameters to be monitored, it further includes:

[0048] Monitor the valve position of the current three-way valve;

[0049] Determine whether the valve of the current three-way valve reaches the target valve position based on the valve position of the current three-way valve; wherein, the target valve position is the valve position corresponding to the conduction opening of the current three-way valve;

[0050] If the valve of the current three-way valve does not reach the target valve position, trigger a fault tolerance mechanism.

[0051] Optionally, triggering the fault tolerance mechanism includes:

[0052] Increment the fault count of the current three-way valve by one, and determine whether the fault count of the current three-way valve is greater than a preset count threshold;

[0053] If it is greater, reduce the priority of the current three-way valve, and report a fault code and / or trigger a dashboard alarm;

[0054] If it is not greater, control the current three-way valve to execute the action again, and increment the fault count of the current three-way valve by one;

[0055] Return to the step of monitoring the valve position of the current three-way valve.

[0056] In a second aspect, the present invention also discloses an electronic device, including:

[0057] A memory for storing a computer program;

[0058] A processor for executing the computer program to implement the multi-three-way valve time-sharing control method as described above.

[0059] The present application provides a multi-three-way valve time-sharing control method and device. The method includes: determining a heating request of a thermal management system to clarify the heat target that the thermal management system needs to provide, providing a basis for subsequent control, and ensuring that the thermal management response meets the heating requirements of the cab and the battery; determining the water temperature parameters to be monitored based on the heating request, and obtaining key water temperature data, so as to dynamically determine the priority sequence of each three-way valve according to the water temperature data, optimize the heat distribution path, avoid simultaneous operation of multiple valves, reduce energy consumption and improve efficiency; finally, sequentially control each three-way valve to conduct or close based on the priority sequence, and control the conduction opening of each three-way valve according to the water temperature parameters to be monitored, to achieve precise control and ensure the stability of the thermal management system. Description of the Drawings

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required in the prior art and the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0061] Figure 1 It is a flowchart of a multi-three-way valve time-sharing control method disclosed by the present invention;

[0062] Figure 2 It is a schematic structural diagram of a thermal management system disclosed by the present invention;

[0063] Figure 3 It is a flowchart of a specific multi-three-way valve time-sharing control method disclosed by the present invention;

[0064] Figure 4 It is a structural diagram of an electronic device disclosed by the present invention. Specific Embodiments

[0065] The core of the present invention is to provide a multi-three-way valve time-sharing control method and device, which can determine the priority sequence of each three-way valve by using the water temperature parameter to be monitored, optimize the heat distribution path, avoid simultaneous operation of multiple valves, reduce energy consumption and improve efficiency, and control the opening and closing of each three-way valve in sequence based on the priority sequence, and control the opening degree of each three-way valve by using the water temperature parameter to be monitored, so as to achieve precise control and ensure the stability of the thermal management system.

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0067] In scenarios such as low-temperature startup and high-load operation, the need to trigger the switching of three-way valves in multiple circuits frequently occurs. Multiple three-way valves adopt independent linear control. Multiple three-way valves receive instructions and start simultaneously at the same time. The starting currents of the three-way valve motors are superimposed, exceeding the instantaneous load capacity of the on-vehicle 24V power supply, resulting in the corresponding three-way valve being unable to reach the target position (stuck or stopping halfway) due to insufficient power supply, causing the cab heating to fail, the battery to be unable to be heated or cooled, and even leading to a decline in battery performance and a failure in the loop switching of the thermal management system. Therefore, the present invention provides a multi-three-way valve time-sharing control method. Specifically, please refer to Figure 1 as shown in Figure 1Flow chart of a multi-three-way valve time-sharing control method disclosed by the present invention.

[0068] The multi-three-way valve time-sharing control method may include:

[0069] S11. Determine the heating request of the thermal management system; wherein, the heating request includes any one of separate heating of the cab, separate heating of the battery, and heating of both the cab and the battery;

[0070] S12. Determine the water temperature parameter to be monitored based on the heating request; wherein, the water temperature parameter to be monitored corresponding to separate heating of the cab is the engine water temperature, and the water temperature parameters to be monitored corresponding to separate heating of the battery and heating of both the cab and the battery are both the engine water temperature and the battery water temperature.

[0071] Specifically, the heating request of the cab can be sent by the user controlling the operation panel to send a heating request signal for the cab, or the temperature of the cab can be collected by using a temperature sensor. The temperature sensor sends the collected temperature to the vehicle controller, and the vehicle controller sends a heating request signal for the cab. It should be noted that the heat of the cab warm air usually comes from the engine coolant. When the coolant flows through the engine, it absorbs waste heat, and then exchanges heat with the air through the warm air core to provide warm air for the cab. If the engine water temperature is insufficient (such as in the cold start stage), even if there is a heating request for the cab, the warm air core cannot provide enough heat. At this time, auxiliary heating such as a water PTC (Positive Temperature Coefficient) heater needs to be started or the heating is delayed to avoid blowing cold air. In addition, in this embodiment, the LIN (Local Interconnect Network) bus can be used for serial communication between the sensor and the vehicle controller. The LIN bus is targeted at low-end communication between the nodes of the body network module and is a low-cost serial communication protocol based on UART (Universal Asynchronous Receiver / Transmitter) or SCI (Serial Communication Interface).

[0072] The heating request of the battery is jointly determined by the battery temperature, the SOC (State of Charge) of the battery, and the engine state. Among them, the battery temperature is the direct basis for determining whether the battery needs to be heated. When the battery temperature is lower than a certain threshold (such as 25 ), usually the battery preheating circuit is started. For example, when the outside temperature is lower than 10 and the battery temperature is lower than 25 When the temperature management system is activated, the battery preheating circuit will be turned on. In addition, the battery temperature is also closely related to the change of the battery's state of charge (SOC). In a low-temperature environment, the SOC will drop faster. Additionally, the SOC is an important factor affecting the battery heating request. The higher the SOC value, the stronger the battery's discharge ability is represented. However, a low-temperature environment will reduce the discharge efficiency of the SOC, resulting in a decline in battery performance. Therefore, it is necessary to combine the SOC value to determine whether to start the battery heating system. For example, when the SOC value is high, priority may be given to battery preheating to slow down the decline in the battery discharge rate. The engine state is also an important basis for judging the battery heating request. For example, when the engine temperature is low, the waste heat of the engine can be used to heat the battery, thereby increasing the SOC and discharge efficiency of the battery. If the engine temperature is high (such as 70 or above), the preheating circuit may be turned off, and instead, the refrigeration system may be used to maintain the battery temperature. By comprehensively considering the battery temperature, the battery's SOC, and the engine state to determine the battery heating request, precise control of the battery temperature can be achieved, thereby improving the battery's usage efficiency and lifespan.

[0073] Determine the water temperature parameters to be monitored according to the actual heating request, avoid redundant water temperature acquisition, reduce the system calculation burden, shorten the signal processing cycle, and speed up the execution of the heating decision. For example, give priority to using the waste heat of the engine during cold start, and quickly switch to the battery heating circuit when the battery is at a low temperature. At the same time, synchronously monitor the engine water temperature and the battery water temperature during battery or combined heating to ensure the optimal heat source distribution and reduce energy consumption.

[0074] S13. Determine the priority sequence of multiple three-way valves based on the water temperature parameters to be monitored.

[0075] Considering that when using a fixed priority, it is impossible to adapt to dynamic working conditions. If there is an emergency demand, such as a low-temperature warning for the battery, but the battery needs to wait for the previous valve action to complete, resulting in a delay in battery heating, causing a decline in discharge efficiency or inability to start at low temperature; or a low-temperature warning for the cab, but the cab needs to wait for the previous valve action to complete, and the waste heat of the engine is not imported into the cab in time, and the water PTC heater starts and stops frequently (increasing energy consumption). The water temperature parameter reflects the degree of heating demand of the circuit to be heated. If the difference between the water temperature parameter and the corresponding preset water temperature threshold is larger, it indicates that the heating demand of the circuit to be heated corresponding to this water temperature parameter is more urgent. At this time, priority needs to be given to heating the circuit to be heated corresponding to this water temperature parameter.

[0076] S14. Control the actions of multiple three-way valves in sequence based on the priority sequence and the water temperature parameters to be monitored.

[0077] Control the actions of multiple three-way valves in descending order according to the priority sequence. Specifically, the vehicle controller determines the opening degrees of each three-way valve based on the water temperature parameter to be monitored, and then sequentially sends corresponding control commands to each three-way valve based on the priority sequence. Among them, after the valve of the previous three-way valve reaches the specified position, the vehicle controller can send a corresponding control command to the next three-way valve with a priority of 1 to trigger the valve action of the next three-way valve. The vehicle controller inserts an adjustable delay between sending corresponding control commands to the three-way valves with adjacent priorities to ensure voltage stability, changes the multi-valve action from "parallel" to "serial", and ensures that only one three-way valve is started each time.

[0078] It can be seen that this application uses the water temperature parameter to be monitored to determine the priority sequence of each three-way valve, so as to optimize the heat distribution path, avoid multiple valves from acting simultaneously, reduce energy consumption and improve efficiency, and sequentially control each three-way valve to open or close based on the priority sequence, and control the opening degree of each three-way valve with the water temperature parameter to be monitored, realizing precise control and ensuring the stability of the thermal management system.

[0079] Based on the above embodiments:

[0080] Specifically, please refer to Figure 2 as shown Figure 2 which is a schematic structural diagram of a thermal management system disclosed by the present invention. Among them, the number of three-way valves is three.

[0081] As an optional embodiment, the multiple three-way valves include a first three-way valve in the engine circuit, a second three-way valve in the cab heating circuit, and a third three-way valve in the battery circuit, and the heating request is for the cab to heat alone;

[0082] Determining the priority sequence of multiple three-way valves based on the water temperature parameter to be monitored may include:

[0083] If the engine water temperature is greater than the first preset temperature threshold, it is determined that the priority sequence is the second three-way valve > the first three-way valve > the third three-way valve;

[0084] If the engine water temperature is less than the first preset temperature threshold, it is determined that the priority sequence is the first three-way valve > the second three-way valve > the third three-way valve.

[0085] The thermal management system may also include a vehicle controller and multiple temperature sensors. The vehicle controller is responsible for executing control algorithms, and the multiple temperature sensors are responsible for collecting the water temperatures of the engine loop, the cab loop, and the battery loop. Among them, the engine waterway loop H is connected to the engine cooling system, and the engine cooling system includes an engine radiator. The engine waterway loop H is connected to the cab heating loop F through a first three-way valve; the cab heating loop includes a first electronic water pump P1, and the cab heating loop F may also include a water PTC heater. The cab heating loop F is divided into sub-loops through a second three-way valve, and the cab heating sub-loop G is connected to the water-water heat exchanger T; the battery loop is divided into a refrigeration loop K and a heating loop L. The refrigeration loop K includes a battery refrigeration system, and the heating loop L includes a battery pack and a second electronic water pump P2. The refrigeration loop K and the heating loop L are switched through a third three-way valve.

[0086] Specifically, the vehicle controller is used to analyze the heating requirements of the cab and the battery, and divide the overall control strategy according to the temperature data of each sensor. For example, the cab heats alone, the battery heats alone, or the cab and the battery heat simultaneously. According to different requirements, priorities are assigned to the three three-way valves, and based on the assigned results, delay control is performed in sequence. During this process, it is detected whether the three-way valve control command sent by the PMS is the same as the actual movement state of the three-way valve. If they are not the same, the control command is sent again. If the control purpose is not achieved after retrying three times, a fault flag bit is output.

[0087] In this embodiment, the heating request is for the cab to heat alone. To control the actions of the three three-way valves based on the engine water temperature when only monitoring the engine water temperature for the cab to heat alone, there are two specific implementation methods.

[0088] In the first specific implementation method, if the engine water temperature is greater than the first preset temperature threshold, at this time, the waste heat of the engine can be directly used to heat the cab. The coolant absorbs waste heat when flowing through the engine, and then exchanges heat with air through the heater core to provide warm air for the cab. Then, based on the priority sequence of the second three-way valve > the first three-way valve > the third three-way valve, the first three-way valve is controlled to conduct, and the second three-way valve and the third three-way valve are both turned off; among them, the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time, that is, the farther the valve position of the second three-way valve is from the target position, the longer the delay time, and the closer the valve position of the second three-way valve is to the target position, the shorter the delay time; the delay time between the control of the first three-way valve and the third three-way valve is determined by the valve position of the first three-way valve, and the distance between the valve position of the first three-way valve and the target position is positively correlated with the delay time.

[0089] In the second specific embodiment, if the engine water temperature is less than the first preset temperature threshold, the first three-way valve, the second three-way valve, and the third three-way valve are all controlled to be turned off based on the priority sequence of the first three-way valve > the second three-way valve > the third three-way valve; wherein, the delay time between the controls of the first three-way valve and the second three-way valve is determined by the valve position of the first three-way valve, and the distance between the valve position of the first three-way valve and the target position is positively correlated with the delay time; the delay time between the controls of the second three-way valve and the third three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0090] It can be seen that when the engine water temperature is high, the engine waste heat is preferentially utilized, the energy consumption of auxiliary heating is reduced, the overall power consumption of the thermal management system is lowered, and when the engine water temperature is insufficient, it is automatically switched to the engine circuit for priority heating, improving the energy efficiency of the thermal management system and ensuring that the heating requirements of the cab can be stably met under various working conditions.

[0091] As an alternative embodiment, the multiple three-way valves include a first three-way valve in the engine circuit, a second three-way valve in the cab heating circuit, and a third three-way valve in the battery circuit, and the heating request is for the battery to heat alone;

[0092] Determining the priority sequence of the multiple three-way valves based on the water temperature parameter to be monitored may include:

[0093] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, then determine the priority sequence as the third three-way valve > the second three-way valve > the first three-way valve;

[0094] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, then determine the priority sequence as the third three-way valve > the second three-way valve > the first three-way valve;

[0095] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, then determine the priority sequence as the third three-way valve > the second three-way valve > the first three-way valve;

[0096] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, then determine the priority sequence as the first three-way valve > the second three-way valve > the third three-way valve.

[0097] In this embodiment, the heating request is for the battery to heat alone. According to the need for the battery to heat alone, the engine water temperature and the battery water temperature need to be monitored simultaneously. There are four specific embodiments for controlling the actions of the three three-way valves based on the engine water temperature and the battery water temperature.

[0098] In the first specific embodiment, if the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve is controlled to conduct, the second three-way valve is controlled to shut off, and the third three-way valve is controlled to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; wherein, the delay time between the control of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0099] In the second specific embodiment, if the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, the first three-way valve, the second three-way valve, and the third three-way valve are all controlled to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; wherein, the delay time between the control of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0100] In the third specific embodiment, if the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve and the second three-way valve are both controlled to shut off, and the third three-way valve is controlled to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; wherein, the delay time between the control of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0101] In the fourth specific embodiment, if the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, the first three-way valve is shut off based on the priority sequence of the first three-way valve > the second three-way valve > the third three-way valve, and the second three-way valve and the third three-way valve are both turned on; wherein, the delay time between the controls of the first three-way valve and the second three-way valve is determined by the valve position of the first three-way valve, and the distance between the valve position of the first three-way valve and the target position is positively correlated with the delay time; the delay time between the controls of the second three-way valve and the third three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time.

[0102] It can be seen that in this embodiment, the three-way valve corresponding to the battery circuit is always set to the highest priority, ensuring that the battery quickly warms up in a low-temperature environment, protecting the battery performance and safety, and preferentially utilizing waste heat when the engine water temperature is sufficient to reduce system energy consumption. When the engine water temperature is insufficient, the priority sequence is automatically adjusted to ensure effective distribution of heat sources, improve system reliability and response speed, and achieve efficient and energy-saving battery thermal management.

[0103] As an optional embodiment, the multiple three-way valves include the first three-way valve in the engine circuit, the second three-way valve in the cab heating circuit, and the third three-way valve in the battery circuit, and the heating request is for both the cab and the battery to be heated;

[0104] Determining the priority sequence of the multiple three-way valves based on the water temperature parameters to be monitored may include:

[0105] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, then determine the priority sequence as the third three-way valve > the second three-way valve > the first three-way valve;

[0106] If the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, then determine the priority sequence as the first three-way valve > the second three-way valve > the third three-way valve;

[0107] If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, then determine the priority sequence as the third three-way valve > the first three-way valve > the second three-way valve;

[0108] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, then determine the priority sequence as the third three-way valve > the second three-way valve > the first three-way valve;

[0109] If the engine water temperature is less than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, then determine the priority sequence as the second three-way valve > the third three-way valve > the first three-way valve;

[0110] If the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, it is determined that the priority sequence is the third three-way valve > the second three-way valve > the first three-way valve;

[0111] Among them, the second preset temperature threshold is greater than the third preset temperature threshold.

[0112] In this embodiment, the heating request is for both the cab and the battery to be heated. According to the need for both the cab and the battery to be heated, the engine water temperature and the battery water temperature need to be monitored simultaneously. There are six specific implementation manners for controlling the actions of the three three-way valves based on the engine water temperature and the battery water temperature.

[0113] In the first specific implementation manner, if the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve is controlled to conduct, the second three-way valve is controlled to shut off, and the third three-way valve is controlled to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; among them, the delay time between the control of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0114] In the second specific implementation manner, if the engine water temperature is greater than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, the first three-way valve is controlled to conduct, the second three-way valve is controlled to conduct 50%, and the third three-way valve is controlled to conduct based on the priority sequence of the first three-way valve > the second three-way valve > the third three-way valve; among them, the delay time between the control of the first three-way valve and the second three-way valve is determined by the valve position of the first three-way valve, and the distance between the valve position of the first three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the third three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time.

[0115] In the third specific implementation, if the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, the first three-way valve is controlled to conduct, the second three-way valve is controlled to conduct 75%, and the third three-way valve is controlled to conduct based on the priority sequence of the third three-way valve > the first three-way valve > the second three-way valve; wherein, the delay time between the control of the third three-way valve and the first three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the first three-way valve and the second three-way valve is determined by the valve position of the first three-way valve, and the distance between the valve position of the first three-way valve and the target position is positively correlated with the delay time.

[0116] In the fourth specific implementation, if the engine water temperature is less than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve and the second three-way valve are controlled to shut off and the third three-way valve is controlled to conduct based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; wherein, the delay time between the control of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0117] In the fifth specific implementation, if the engine water temperature is less than the first preset temperature threshold, the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, the first three-way valve is controlled to shut off, the second three-way valve is controlled to conduct 50%, and the third three-way valve is controlled to conduct based on the priority sequence of the second three-way valve > the third three-way valve > the first three-way valve; wherein, the delay time between the control of the second three-way valve and the third three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time; the delay time between the control of the third three-way valve and the first three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time.

[0118] In the sixth specific embodiment, if the engine water temperature is less than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, the first three-way valve is controlled to be shut off, the second three-way valve is controlled to be 75% open, and the third three-way valve is controlled to be open based on the priority sequence of the third three-way valve > the second three-way valve > the first three-way valve; wherein, the delay time between the controls of the third three-way valve and the second three-way valve is determined by the valve position of the third three-way valve, and the distance between the valve position of the third three-way valve and the target position is positively correlated with the delay time; the delay time between the controls of the second three-way valve and the first three-way valve is determined by the valve position of the second three-way valve, and the distance between the valve position of the second three-way valve and the target position is positively correlated with the delay time.

[0119] It can be seen that in this embodiment, precise heat distribution is achieved through multi-threshold judgment for heating both the cab and the battery. The priority sequence of the three-way valves is intelligently adjusted according to different temperature states of the engine and the battery to ensure that the key components (the battery or the cab) obtain the required heat first. Moreover, the waste heat of the engine is fully utilized under high-temperature conditions, and the heating demand of the battery is preferentially guaranteed under low-temperature conditions, reducing the auxiliary heating energy consumption. At the same time, the system stability under extreme conditions is ensured, realizing efficient and reliable thermal management control.

[0120] As an alternative embodiment, after controlling the actions of multiple three-way valves in sequence based on the priority sequence and the water temperature parameters to be monitored, it may further include:

[0121] Monitoring the valve position of the current three-way valve;

[0122] Determining whether the valve of the current three-way valve reaches the target valve position based on the valve position of the current three-way valve; wherein, the target valve position is the valve position corresponding to the open degree of the current three-way valve;

[0123] If the valve of the current three-way valve does not reach the target valve position, trigger the fault tolerance mechanism.

[0124] In this embodiment, considering that when the valve of the three-way valve is stuck or other abnormal executions occur, the thermal management system only relies on simple retries or manual interventions, which will lead to low fault recovery efficiency and the vehicle may stop due to heating failure. If the control instruction is repeated, it will exacerbate the voltage fluctuation and trigger a chain of faults. Therefore, in this embodiment, by real-time monitoring the actual valve position of the three-way valve and comparing the actual valve position of the current three-way valve with the corresponding target position, it is possible to promptly detect abnormal valve executions of the current three-way valve (such as sticking, response delay, etc.). Once a deviation is detected, the fault tolerance mechanism is immediately triggered, which can effectively prevent the entire thermal management system from failing due to the valve failure of a single three-way valve and significantly improve the overall reliability of the system. This closed-loop feedback mechanism ensures that the valves of each three-way valve can accurately reach the target opening degree, thereby achieving fine adjustment of the heat flow. This precise control not only optimizes the heat distribution efficiency but also avoids problems such as energy waste or substandard heating effects caused by the valve position deviation of the three-way valve. At the same time, the thermal management system can avoid overloading or wear of the actuator caused by continuously outputting incorrect drive signals. For example, if the valve of the current three-way valve is stuck, the thermal management system can promptly stop driving and give an alarm to prevent the motor from burning out or the mechanical structure from being damaged, thereby extending the service life of the three-way valve.

[0125] Specifically, triggering the fault tolerance mechanism may include: incrementing the fault count of the current three-way valve by one and determining whether the fault count of the current three-way valve is greater than the preset count threshold; if it is greater, reducing the priority of the current three-way valve and reporting a fault code and / or triggering a dashboard alarm; if it is not greater, controlling the current three-way valve to perform the action again and incrementing the fault count of the current three-way valve by one; returning to the step of monitoring the valve position of the current three-way valve. By setting the preset count threshold, the thermal management system can distinguish between occasional faults (such as instantaneous signal interference) and persistent faults (such as mechanical sticking). For occasional faults, the automatic retry mechanism can quickly restore the valve function of the three-way valve and avoid unnecessary alarms; for persistent faults, the fault is prevented from spreading through downgrading processing, an alarm is triggered to remind the user to perform maintenance, and at the same time, the heat is automatically distributed to other normal circuits to ensure that other heating requirements are not affected, improving the availability of the thermal management system in a fault state and realizing intelligent hierarchical management of faults. It should be noted that the preset count threshold can be 3. For the multi-three-way valve time-sharing control method when the preset count threshold is 3, please refer to Figure 3 as shown.

[0126] It can be seen that in this embodiment, through real-time monitoring and fault tolerance processing, high-precision and highly reliable control of the three-way valve action is achieved, while improving the safety and reliability of the thermal management system.

[0127] Furthermore, the embodiment of the present application also discloses an electronic device, Figure 4A structural diagram of an electronic device disclosed by the present invention. The content in the figure shall not be construed as any limitation on the scope of use of this application. The electronic device 20 may specifically include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25, and a communication bus 26. Among them, the memory 22 is used to store a computer program, and the computer program is loaded and executed by the processor 21 to implement the relevant steps in the multi-three-way valve time-sharing control method disclosed in any of the foregoing embodiments. In addition, the electronic device 20 in this embodiment may specifically be an electronic computer.

[0128] In this embodiment, the power supply 23 is used to provide operating voltages for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol it follows can be any communication protocol applicable to the technical solution of this application, and no specific limitation is imposed on it here; the input / output interface 25 is used to obtain external input data or output data to the outside, and its specific interface type can be selected according to specific application needs, and no specific limitation is made here.

[0129] In addition, as a carrier for resource storage, the memory 22 may be a read-only memory, a random access memory, a magnetic disk, or an optical disc, etc. The resources stored thereon may include an operating system 221, a computer program 222, etc., and the storage method may be temporary storage or permanent storage.

[0130] Among them, the operating system 221 is used to manage and control each hardware device and the computer program 222 on the electronic device 20, and it may be Windows Server, Netware, Unix, Linux, etc. In addition to the computer program capable of implementing the multi-three-way valve time-sharing control method executed by the electronic device 20 disclosed in any of the foregoing embodiments, the computer program 222 may further include a computer program capable of performing other specific tasks.

[0131] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference may be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference may be made to the description of the method part for the relevant parts.

[0132] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0133] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. 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 the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A time-division control method for multiple three-way valves, characterized in that: include: Determining a heating request of the thermal management system; wherein the heating request includes any one of heating the cab alone, heating the battery alone, and heating both the cab and the battery; Determine the water temperature parameter to be monitored based on the heating request; wherein the water temperature parameter to be monitored corresponding to the cab heating alone is the engine water temperature, and the water temperature parameters to be monitored corresponding to the battery heating alone and the cab and battery heating are both the engine water temperature and the battery water temperature; Determining a priority sequence of a plurality of three-way valves based on the water temperature parameter to be monitored; Based on the priority sequence and the water temperature parameter to be monitored, the actions of the multiple three-way valves are controlled in sequence.

2. The time-division control method for multiple three-way valves according to claim 1, characterized in that: The plurality of three-way valves include a first three-way valve of an engine circuit, a second three-way valve of a cab heating circuit, and a third three-way valve of a battery circuit, and the heating request is heating the cab alone; Determining a priority sequence of a plurality of three-way valves based on the water temperature parameter to be monitored includes: If the engine water temperature is greater than a first preset temperature threshold, determining the priority sequence as the second three-way valve being greater than the first three-way valve being greater than the third three-way valve; If the engine water temperature is lower than the first preset temperature threshold, the priority sequence is determined as follows: the first three-way valve is greater than the second three-way valve, which is greater than the third three-way valve.

3. The time-division control method for multiple three-way valves according to claim 2, characterized in that: Based on the priority sequence and the water temperature parameter to be monitored, the actions of the plurality of three-way valves are controlled in sequence, including: If the engine water temperature is greater than the first preset temperature threshold, the first three-way valve is controlled to be turned on, and the second three-way valve and the third three-way valve are controlled to be turned off based on the priority sequence that the second three-way valve is greater than the first three-way valve and greater than the third three-way valve; If the engine water temperature is lower than the first preset temperature threshold, the first three-way valve, the second three-way valve and the third three-way valve are all closed based on the priority sequence of the first three-way valve being greater than the second three-way valve and greater than the third three-way valve; Wherein, a delay time is set between the control of the first three-way valve, the second three-way valve and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

4. The time-division control method for multiple three-way valves according to claim 1, characterized in that: The plurality of three-way valves include a first three-way valve of an engine circuit, a second three-way valve of a cab heating circuit, and a third three-way valve of a battery circuit, and the heating request is battery heating alone; Determining a priority sequence of a plurality of three-way valves based on the water temperature parameter to be monitored includes: If the engine water temperature is greater than a first preset temperature threshold and the battery water temperature is greater than a second preset temperature threshold, determining the priority sequence as the third three-way valve is greater than the second three-way valve is greater than the first three-way valve; If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, determining the priority sequence as the third three-way valve is greater than the second three-way valve and greater than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is higher than the second preset temperature threshold, determining the priority sequence as the third three-way valve is higher than the second three-way valve is higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is lower than the second preset temperature threshold, the priority sequence is determined as the first three-way valve is higher than the second three-way valve is higher than the third three-way valve.

5. The time-division control method for multiple three-way valves according to claim 4, characterized in that: Based on the priority sequence and the water temperature parameter to be monitored, the actions of the plurality of three-way valves are controlled in sequence, including: If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve is controlled to be turned on, the second three-way valve is turned off, and the third three-way valve is controlled to be turned on based on the priority sequence that the third three-way valve is greater than the second three-way valve and greater than the first three-way valve; If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the second preset temperature threshold, the first three-way valve, the second three-way valve and the third three-way valve are all controlled to be turned on based on the priority sequence that the third three-way valve is greater than the second three-way valve and greater than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is higher than the second preset temperature threshold, the first three-way valve and the second three-way valve are both closed and the third three-way valve is opened based on the priority sequence that the third three-way valve is higher than the second three-way valve and higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is lower than the second preset temperature threshold, the first three-way valve is closed and the second three-way valve and the third three-way valve are both opened based on the priority sequence of the first three-way valve being greater than the second three-way valve and greater than the third three-way valve; Wherein, a delay time is set between the control of the first three-way valve, the second three-way valve and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

6. The time-division control method for multiple three-way valves according to claim 1, characterized in that: The plurality of three-way valves include a first three-way valve for an engine circuit, a second three-way valve for a cab heating circuit, and a third three-way valve for a battery circuit, and the heating request is heating both the cab and the battery; Determining a priority sequence of a plurality of three-way valves based on the water temperature parameter to be monitored includes: If the engine water temperature is greater than a first preset temperature threshold and the battery water temperature is greater than a second preset temperature threshold, determining the priority sequence as the third three-way valve is greater than the second three-way valve is greater than the first three-way valve; If the engine water temperature is greater than the first preset temperature threshold, and the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, then determining the priority sequence as the first three-way valve greater than the second three-way valve greater than the third three-way valve; If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, determining the priority sequence as the third three-way valve is greater than the first three-way valve and greater than the second three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is higher than the second preset temperature threshold, determining the priority sequence as the third three-way valve is higher than the second three-way valve is higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold, the battery water temperature is lower than the second preset temperature threshold and higher than the third preset temperature threshold, then the priority sequence is determined as the second three-way valve is higher than the third three-way valve and higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is lower than the third preset temperature threshold, determining the priority sequence as the third three-way valve is higher than the second three-way valve and higher than the first three-way valve; Wherein, the second preset temperature threshold is greater than the third preset temperature threshold.

7. The time-division control method for multiple three-way valves according to claim 6, characterized in that: Based on the priority sequence and the water temperature parameter to be monitored, the actions of the plurality of three-way valves are controlled in sequence, including: If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is greater than the second preset temperature threshold, the first three-way valve is controlled to be turned on, the second three-way valve is turned off, and the third three-way valve is controlled to be turned on based on the priority sequence that the third three-way valve is greater than the second three-way valve and greater than the first three-way valve; If the engine water temperature is greater than the first preset temperature threshold, and the battery water temperature is less than the second preset temperature threshold and greater than the third preset temperature threshold, the first three-way valve is controlled to be turned on, the second three-way valve is controlled to be turned on by 50%, and the third three-way valve is controlled to be turned on based on the priority sequence of the first three-way valve being greater than the second three-way valve being greater than the third three-way valve; If the engine water temperature is greater than the first preset temperature threshold and the battery water temperature is less than the third preset temperature threshold, the first three-way valve is controlled to be turned on, the second three-way valve is controlled to be turned on by 75%, and the third three-way valve is controlled to be turned on based on the priority sequence that the third three-way valve is greater than the first three-way valve and greater than the second three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is higher than the second preset temperature threshold, the first three-way valve and the second three-way valve are controlled to be closed and the third three-way valve is controlled to be opened based on the priority sequence that the third three-way valve is higher than the second three-way valve and higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold, and the battery water temperature is lower than the second preset temperature threshold and higher than the third preset temperature threshold, the first three-way valve is controlled to be closed, the second three-way valve is controlled to be 50% open, and the third three-way valve is controlled to be open based on the priority sequence that the second three-way valve is higher than the third three-way valve and higher than the first three-way valve; If the engine water temperature is lower than the first preset temperature threshold and the battery water temperature is lower than the third preset temperature threshold, the first three-way valve is controlled to be closed, the second three-way valve is controlled to be opened by 75%, and the third three-way valve is controlled to be opened based on the priority sequence that the third three-way valve is higher than the second three-way valve and higher than the first three-way valve; Wherein, a delay time is set between the control of the first three-way valve, the second three-way valve and the third three-way valve, and the delay time is determined by the valve position of the three-way valve of the adjacent previous priority.

8. The time-division control method for multiple three-way valves according to any one of claims 1 to 7, characterized in that: After sequentially controlling the actions of the plurality of three-way valves based on the priority sequence and the water temperature parameter to be monitored, the method further includes: Monitoring the current valve position of the three-way valve; Determine whether the current valve of the three-way valve reaches the target valve position based on the current valve position of the three-way valve; wherein the target valve position is the valve position corresponding to the current conduction opening of the three-way valve; If the current valve position of the three-way valve does not reach the target valve position, the fault tolerance mechanism is triggered.

9. The time-division control method for multiple three-way valves according to claim 8, characterized in that: Triggering fault tolerance mechanisms, including: Increasing the current number of failures of the three-way valve by one, and determining whether the current number of failures of the three-way valve is greater than a preset number threshold; If it is greater, the priority of the current three-way valve is reduced, and a fault code is reported and / or an instrument panel alarm is triggered; If it is not greater than, the current three-way valve is controlled to re-execute the action, and the number of failures of the current three-way valve is increased by one; Return to the step of monitoring the current valve position of the three-way valve.

10. An electronic device, characterized in that: include: Memory, used to store computer programs; A processor is used to execute the computer program to implement the time period control method of multiple three-way valves as described in any one of claims 1 to 9.

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