Control method and device of thermal management circuit, storage medium and vehicle

Abstract

The application provides a control method and device of a thermal management loop, a storage medium and a vehicle, the thermal management loop comprising a heater core circuit, a stack heat dissipation circuit of a fuel cell and a three-way valve, the three-way valve comprising a first state of conducting the heater core circuit and the stack heat dissipation circuit and a second state of disconnecting the heater core circuit and the stack heat dissipation circuit; the method comprises: in the case that a heating function of an air conditioner is in an open state, detecting a first temperature at a stack water inlet in the stack heat dissipation circuit, a second temperature at a heater core water outlet in the heater core circuit and a third temperature corresponding to an in-vehicle environment; and controlling a state of the three-way valve according to the first temperature, the second temperature and the third temperature. The application determines the three-way valve state matched with the current working condition according to the first temperature, the second temperature and the third temperature, which can improve the heating rate of the stack and the in-vehicle environment, and can improve the driving and riding experience of the user while improving the whole vehicle heat utilization rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a control method and device of a thermal management circuit, a storage medium and a vehicle. BACKGROUND

[0002] At present, new energy vehicles can be divided into hybrid electric vehicles, plug-in electric vehicles and fuel cell electric vehicles according to different internal power systems. Among them, for fuel cell electric vehicles, the suitable working temperature of the fuel cell stack is generally above 60 degrees Celsius, and the suitable environmental temperature of the cab in winter is generally between 18 degrees Celsius and 25 degrees Celsius. At present, the cab heating in winter generally uses the Positive Temperature Coefficient (PTC) heater and the waste heat of the stack to provide heat, that is, the heater core circuit provided with the PTC heater and the heat dissipation circuit of the stack are connected, and since the suitable working temperature of the stack and the suitable environmental temperature of the cab are different, there is an unreasonable heat distribution. SUMMARY

[0003] The embodiments of the present application provide a control method and device of a thermal management circuit, a storage medium and a vehicle, to solve the problem of unreasonable heat distribution when the existing heater core circuit and the heat dissipation circuit of the stack are connected.

[0004] In the first aspect, the embodiments of the present application provide a control method of a thermal management circuit, the thermal management circuit comprising a heater core circuit, a stack heat dissipation circuit of a fuel cell and a three-way valve, the three-way valve being connected with the heater core circuit and the stack heat dissipation circuit respectively, the three-way valve comprising a first state of conducting the heater core circuit and the stack heat dissipation circuit, and a second state of disconnecting the heater core circuit and the stack heat dissipation circuit; the method comprising:

[0005] In the case that the heating function of the air conditioner is in an open state, detecting a first temperature at a stack water inlet in the stack heat dissipation circuit, a second temperature at a heater core water outlet in the heater core circuit and a third temperature corresponding to an indoor environment;

[0006] According to the first temperature, the second temperature and the third temperature, controlling the state of the three-way valve.

[0007] In a second aspect, the embodiments of the present application further provide a control device of a thermal management circuit, the thermal management circuit comprising a heater core circuit, a stack heat dissipation circuit of a fuel cell, and a three-way valve, the three-way valve being connected with the heater core circuit and the stack heat dissipation circuit respectively, the three-way valve comprising a first state of conducting the heater core circuit and the stack heat dissipation circuit, and a second state of disconnecting the heater core circuit and the stack heat dissipation circuit; the device comprising:

[0008] a checking module configured to detect a first temperature at a stack water inlet in the stack heat dissipation circuit, a second temperature at a heater core water outlet in the heater core circuit, and a third temperature corresponding to an environment in a vehicle when a heating function of the air conditioner is in an on state;

[0009] a first control module configured to control a state of the three-way valve according to the first temperature, the second temperature, and the third temperature.

[0010] In a third aspect, the embodiments of the present application further provide a computer readable storage medium, the computer readable storage medium storing a computer program, the computer program being executed by a processor to implement the control method of the thermal management circuit.

[0011] In a fourth aspect, the embodiments of the present application provide a vehicle, the vehicle comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the computer program being executed by the processor to implement the control method of the thermal management circuit.

[0012] The embodiments of the present application at least have the following technical effects:

[0013] The technical scheme of the embodiment of the present application detects the first temperature at the water inlet of the stack in the stack heat dissipation circuit, the second temperature at the water outlet of the warm air core in the warm air core circuit and the third temperature corresponding to the environment in the vehicle when the heating function of the air conditioner is in the open state, controls the state of the three-way valve according to the first temperature, the second temperature and the third temperature, compared with the prior art that directly connects the warm air core circuit and the stack heat dissipation circuit when the heating function of the air conditioner is opened, there is the problem of unreasonable heat distribution, in the embodiment of the present application, the three-way valve for controlling whether the warm air core circuit and the stack heat dissipation circuit are connected is set, and the temperature at the water inlet of the stack, the temperature at the water outlet of the warm air core and the temperature of the environment in the vehicle are detected and analyzed in real time, the state of the three-way valve that matches the current working condition and optimizes the heat distribution is determined, for example, when the stack does not reach the appropriate working temperature and the temperature corresponding to the stack heat dissipation circuit is lower than the temperature corresponding to the warm air core circuit, the two circuits are separated by controlling the three-way valve, to avoid the problem that the warm air core absorbs the heat of the stack to reduce the temperature rising rate of the stack, and when the temperature in the vehicle does not reach the appropriate temperature, the stack reaches the appropriate working temperature and the temperature corresponding to the stack heat dissipation circuit is higher than the temperature corresponding to the warm air core, the two circuits are connected by controlling the three-way valve, so that the heat of the stack can be used to improve the temperature in the vehicle and improve the temperature rising rate in the vehicle. In summary, the embodiment of the present application can improve the temperature rising rate of the stack and the vehicle, and can improve the user's driving experience while improving the heat utilization rate of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below.

[0015] Figure 1 is a flow diagram of the control method of the thermal management circuit provided by the embodiment of the present application;

[0016] Figure 2 is one of the structure diagrams corresponding to the thermal management circuit provided by the embodiment of the present application;

[0017] Figure 3 is the second structure diagram corresponding to the thermal management circuit provided by the embodiment of the present application;

[0018] Figure 4 is the third structure diagram corresponding to the thermal management circuit provided by the embodiment of the present application;

[0019] Figure 5 is a structure diagram of the control device of the thermal management circuit provided by the embodiment of the present application;

[0020] Figure 6 is a block diagram of the vehicle provided by the embodiment of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0022] It should be understood that the terms "one embodiment" or "an embodiment" as used throughout this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0023] In various embodiments of the present application, it should be understood that the size of the serial number of each process does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0024] As shown in Figure 1 The present application provides a control method of a thermal management circuit, which comprises:

[0025] Step 101, in the case that the heating function of the air conditioner is in an open state, detecting a first temperature at a water inlet of a stack in a stack heat dissipation circuit, a second temperature at a water outlet of a heater core in a heater core circuit, and a third temperature corresponding to an indoor environment.

[0026] As shown in Figure 2 The thermal management circuit in the embodiments of the present application comprises a heater core circuit 210, a stack heat dissipation circuit 220 of a fuel cell, and a three-way valve 230, the three-way valve 230 is connected with the heater core circuit 210 and the stack heat dissipation circuit 220 respectively, the three-way valve 230 comprises a first state of conducting the heater core circuit 210 and the stack heat dissipation circuit 220, as shown in Figure 3 , and a second state of disconnecting the heater core circuit 210 and the stack heat dissipation circuit 220, as shown in Figure 4 .

[0027] The control method of the heat management loop provided in the embodiments of the present application is applied to a heat management controller, which can be a vehicle controller. It should be noted that when the vehicle is started, the three-way valve is in the second state by default, that is, the heater core loop and the stack heat dissipation loop are disconnected and independent of each other. The heat management controller can detect the opening and closing state of the heating function of the air conditioner. In the case where it is detected that the heating function of the air conditioner is in the open state, the heat management controller detects the first temperature at the stack water inlet in the stack heat dissipation loop, the second temperature at the heater core water outlet in the heater core loop, and the third temperature corresponding to the in-vehicle environment.

[0028] In step 102, the state of the three-way valve is controlled according to the first temperature, the second temperature, and the third temperature.

[0029] The heat management controller can determine the target state of the three-way valve that matches the current working condition according to the detected first temperature, second temperature, and third temperature. The target state is the first state or the second state, so that the state of the three-way valve can be controlled based on the target state.

[0030] In the embodiments of the present application, in the case where the heating function of the air conditioner is in the open state, the first temperature at the stack water inlet in the stack heat dissipation loop, the second temperature at the heater core water outlet in the heater core loop, and the third temperature corresponding to the in-vehicle environment are detected. The state of the three-way valve that matches the current working condition is determined according to the first temperature, the second temperature, and the third temperature, and the state of the three-way valve is controlled. Compared with the case where the heater core loop and the stack heat dissipation loop are always connected, the heating rate of the stack and the in-vehicle environment can be improved, and the user's driving experience can be improved while improving the heat utilization rate of the vehicle.

[0031] In an optional embodiment of the present application, the state of the three-way valve is controlled according to the first temperature, the second temperature, and the third temperature, including:

[0032] When the first temperature is less than a first preset temperature threshold and the third temperature is less than a second preset temperature threshold, the three-way valve is controlled to be in the second state;

[0033] When the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is greater than or equal to the second temperature, the three-way valve is controlled to be in the second state;

[0034] When the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is less than the second temperature, the three-way valve is controlled to be in the first state;

[0035] when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is greater than the second temperature, controlling the three-way valve to be in the first state;

[0036] when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is less than or equal to the second temperature, controlling the three-way valve to be in the second state;

[0037] when the first temperature is greater than or equal to the first preset temperature threshold, and the third temperature is greater than or equal to the second preset temperature threshold, controlling the three-way valve to be in the first state.

[0038] Specifically, when the state of the three-way valve is controlled according to the first temperature, the second temperature and the third temperature, the first temperature and the first preset temperature threshold can be compared, the third temperature and the second preset temperature threshold can be compared, and the first temperature and the second temperature can be compared. The first preset temperature threshold is the lower limit of the suitable working temperature of the stack. If the working temperature of the stack is lower than the first preset temperature threshold, the reaction efficiency of the stack will be reduced, and even the stack will be damaged. The lower limit of the suitable working temperature of the stack of the fuel cell can be calibrated by experiment as the first preset temperature threshold. For example, the first preset temperature threshold can be determined as 60 degrees Celsius. The second preset temperature threshold is the lower limit of the suitable temperature of the vehicle environment. For example, when the suitable temperature of the vehicle environment is 18 degrees Celsius to 25 degrees Celsius, the second preset temperature threshold can be set to 18 degrees Celsius.

[0039] wherein, based on the relationship between the first temperature and the first preset temperature threshold, there are two cases, the first temperature is less than the first preset temperature threshold, and the first temperature is greater than or equal to the first preset temperature threshold.

[0040] In the first case, the first temperature is less than the first preset temperature threshold, that is, the current stack does not reach the appropriate working temperature, at this time the stack needs to be warmed up by its own heat production. Since the heating function of the air conditioner is turned on, the heater in the heater core circuit is turned on, the heater core is heated and warmed up by the heater, and then the ambient temperature in the vehicle is improved. When the heater is turned on, the ambient temperature in the vehicle gradually increases, and in this process, whether the ambient temperature in the vehicle reaches the appropriate temperature can be determined by comparing the detected third temperature with the second preset temperature threshold. Among them, when the third temperature is less than the second preset temperature threshold, it indicates that the ambient temperature in the vehicle has not reached the appropriate temperature, at this time, the heater core circuit and the stack heat dissipation circuit need to be disconnected, and the three-way valve needs to be controlled in the second state, so that the stack is warmed up by its own heat production, and the heater core is heated and warmed up by the heater. The heater core can avoid absorbing the heat of the stack, slow down the heating rate of the stack, or the stack absorbs the heat of the heater core, slows down the heating rate of the vehicle. With the increase of the working time of the heater, the ambient temperature in the vehicle gradually increases, and when the third temperature is greater than or equal to the second preset temperature threshold, it indicates that the ambient temperature in the vehicle has reached the appropriate temperature, at this time, the first temperature and the second temperature need to be compared. When the first temperature is greater than or equal to the second temperature, it indicates that the temperature corresponding to the stack heat dissipation circuit is higher than the temperature corresponding to the heater core circuit, at this time, the heater core circuit and the stack heat dissipation circuit need to be disconnected, and the three-way valve needs to be controlled in the second state, so that the stack is warmed up by its own heat production, and the heater core is heated and warmed up by the heater. The heater core can avoid absorbing the heat of the stack, slow down the heating rate of the stack. When the first temperature is less than the second temperature, it indicates that the temperature corresponding to the heater core circuit is higher than the temperature corresponding to the stack heat dissipation circuit, at this time, the heater core circuit and the stack heat dissipation circuit can be connected, that is, the three-way valve is controlled to switch to the first state, so that the stack can be warmed up by its own heat production and the heater heating, and then the heating rate of the stack is improved, so that it reaches the appropriate working temperature as soon as possible.

[0041] In the second case, the first temperature is greater than or equal to the first preset temperature threshold, that is, the current stack has reached the appropriate working temperature. In order to avoid the stack temperature being too high, the stack also needs to be cooled by the radiator. At this time, if the third temperature is less than the second preset temperature threshold, it indicates that the vehicle interior environment temperature has not reached the appropriate temperature. Further, if the first temperature is greater than or equal to the second temperature, it indicates that the temperature corresponding to the stack cooling loop is higher than the temperature corresponding to the heater core loop, and the heater core loop and the stack cooling loop can be connected, that is, the three-way valve is controlled to switch to the first state, so that the heater core can be heated and warmed up by the heater and the waste heat generated by the stack, and the temperature of the heater core is further increased, so that the vehicle interior environment temperature, that is, the third temperature, reaches the appropriate temperature, that is, the second preset temperature threshold, as soon as possible. If the first temperature is less than the second temperature, it indicates that the temperature corresponding to the stack cooling loop is lower than the temperature corresponding to the heater core loop, and at this time, the heater core loop and the stack cooling loop need to be disconnected, that is, the three-way valve is controlled to be in the second state, so as to avoid the stack cooling loop absorbing the heat in the heater core loop, slow down the vehicle interior temperature rising rate, and make the heater core only heat up by the heater, so that the vehicle interior temperature reaches the appropriate temperature as soon as possible. When the third temperature is greater than the second preset temperature threshold, that is, the vehicle interior reaches the appropriate temperature, the heater core loop and the stack cooling loop can be connected, that is, the three-way valve is controlled to switch to the first state, so that the heater core can be heated and warmed up by the waste heat generated by the stack, and the heat utilization rate is improved.

[0042] The technical scheme of the above-mentioned embodiment of the application, the technical scheme of the embodiment of the application, detects the first temperature at the water inlet of the electric pile in the electric pile heat dissipation circuit, the second temperature at the water outlet of the warm air core in the warm air core circuit and the third temperature corresponding to the environment in the vehicle when the heating function of the air conditioner is in the open state, controls the state of the three-way valve according to the first temperature, the second temperature and the third temperature, compared with the prior art in which the warm air core circuit and the electric pile heat dissipation circuit are directly communicated when the heating function of the air conditioner is opened, there is the problem of unreasonable heat distribution, in the embodiment of the application, the three-way valve for controlling whether the warm air core circuit and the electric pile heat dissipation circuit are communicated is arranged, and the temperature at the water inlet of the electric pile, the temperature at the water outlet of the warm air core and the temperature of the environment in the vehicle are detected and analyzed in real time, the state of the three-way valve that matches the current working condition and has the optimal heat distribution is determined, for example, when the electric pile does not reach the appropriate working temperature and the temperature corresponding to the electric pile heat dissipation circuit is lower than the temperature corresponding to the warm air core circuit, the two circuits are separated by controlling the three-way valve, so that the problem of reducing the electric pile temperature rising rate caused by the warm air core absorbing the heat of the electric pile is avoided, and when the temperature in the vehicle does not reach the appropriate temperature, the electric pile reaches the appropriate working temperature and the temperature corresponding to the electric pile heat dissipation circuit is higher than the temperature corresponding to the warm air core, the two circuits are communicated by controlling the three-way valve, so that the heat of the electric pile can be used to improve the temperature in the vehicle, and then the temperature rising rate in the vehicle is improved, in summary, the embodiment of the application can improve the temperature rising rate of the electric pile and the vehicle, and can improve the user's driving experience while improving the heat utilization rate of the vehicle.

[0043] In an optional embodiment of the application, the method further comprises:

[0044] When the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold, the heater in the warm air core circuit is controlled to be closed.

[0045] Specifically, when the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold, that is, the electric pile reaches the appropriate working temperature and the environment in the vehicle also reaches the appropriate temperature, the three-way valve is in the first state, the electric pile heat dissipation circuit and the warm air core circuit are connected, and the warm air core can continue to heat and rise in temperature by using the waste heat of the electric pile, at this time, the heater in the warm air core circuit can be closed, so that the heater stops working and the energy consumption of the vehicle is reduced.

[0046] The above-mentioned embodiment of the application, when the electric pile reaches the appropriate working temperature and the environment in the vehicle reaches the appropriate temperature, the heater is closed, and the waste heat generated by the electric pile is used to continue heating the warm air core, which can effectively reduce the energy consumption of the vehicle.

[0047] In an optional embodiment of the application, the method further comprises:

[0048] In a case where the heating function of the air conditioner is in a closed state, the three-way valve is controlled to be in the second state.

[0049] Specifically, the thermal management controller controls the three-way valve to be in the second state when detecting that the heating function of the air conditioner is in a closed state, so as to disconnect the warm air core circuit and the battery heat dissipation circuit, and avoid heating the warm air core by the heat generated by the battery.

[0050] The above-mentioned embodiments of the present application can timely disconnect the warm air core circuit from the battery heat dissipation circuit and avoid the heat generated by the battery from being transmitted to the warm air core circuit by controlling the three-way valve to be in the second state when the heating function of the air conditioner is closed.

[0051] In an optional embodiment of the present application, as shown in Figure 2 The three-way valve 230 includes a first interface 231, a second interface 232, and a third interface 233.

[0052] The first interface 231 is connected to the battery heat dissipation circuit 220.

[0053] The second interface 232 and the third interface 213 are connected in series to the warm air core circuit 210.

[0054] When the three-way valve 230 is in the first state, only the first interface 231 and the second interface 232 are connected.

[0055] When the three-way valve 230 is in the second state, only the second interface 232 and the third interface 233 are connected.

[0056] Specifically, as shown in Figure 3 Only the first interface 231 and the second interface 232 in the three-way valve 230 are connected, and at this time, the battery heat dissipation circuit and the warm air core circuit are connected. As shown in Figure 4 Only the second interface 232 and the third interface 233 in the three-way valve 230 are connected, and at this time, the battery heat dissipation circuit and the warm air core circuit are disconnected.

[0057] In step 102, the state of the three-way valve is controlled according to the first temperature, the second temperature, and the third temperature, including:

[0058] According to the first temperature, the second temperature, and the third temperature, the connection state of the first interface, the second interface, and the third interface of the three-way valve is controlled.

[0059] The above-mentioned embodiments of the present application add a three-way valve in the thermal management circuit, which is convenient for subsequent control of the state of the three-way valve based on the current working condition, realizes the connection or disconnection between the battery heat dissipation circuit and the warm air core circuit, and further improves the heat utilization efficiency in the thermal management circuit.

[0060] In an optional embodiment of the present application, as shown in Figure 2 The heater can be a PTC heater.

[0061] A second temperature sensor is arranged at the water outlet of the heater core.

[0062] The second temperature at the water outlet of the heater core in the heater core circuit is detected in step 101, including:

[0063] The second temperature is detected by the second temperature sensor.

[0064] The above-mentioned embodiments of the present application can detect the second temperature responded by the heater core circuit by arranging the second temperature sensor at the outlet of the heater core, which facilitates the subsequent control of the state of the three-way valve based on the second temperature.

[0065] In an optional embodiment of the present application, as shown in Figure 2 The heat dissipation circuit of the electric pile includes an electric pile, a fuel cell water pump 221 and a radiator.

[0066] A first temperature sensor is arranged at the water inlet of the electric pile.

[0067] The first temperature at the water inlet of the electric pile in the heat dissipation circuit of the electric pile is detected in step 101, including:

[0068] The first temperature is detected by the first temperature sensor.

[0069] The above-mentioned embodiments of the present application can detect the first temperature responded by the heat dissipation circuit of the electric pile by arranging the first temperature sensor at the water inlet of the electric pile, which facilitates the subsequent control of the state of the three-way valve based on the first temperature.

[0070] The above-mentioned embodiments of the present application provide a control method of a thermal management circuit, and the following will introduce a control device of a thermal management circuit provided by the embodiments of the present application in combination with the drawings.

[0071] As shown in Figure 5 The present application also provides a control device of a thermal management circuit, which includes a heater core circuit, a heat dissipation circuit of an electric pile of a fuel cell and a three-way valve, the three-way valve is connected with the heater core circuit and the heat dissipation circuit of the electric pile respectively, the three-way valve includes a first state of conducting the heater core circuit and the heat dissipation circuit of the electric pile, and a second state of disconnecting the heater core circuit and the heat dissipation circuit of the electric pile; the device includes:

[0072] The inspection module 501 is configured to detect a first temperature at a water inlet of the electric pile in the electric pile heat dissipation circuit, a second temperature at a water outlet of the heater core in the heater core circuit, and a third temperature corresponding to an environment in the vehicle when the heating function of the air conditioner is in the on state.

[0073] The first control module 502 is configured to control a state of the three-way valve according to the first temperature, the second temperature, and the third temperature.

[0074] Optionally, the first control module includes:

[0075] The first control submodule is configured to control the three-way valve to be in the second state when the first temperature is less than a first preset temperature threshold and the third temperature is less than a second preset temperature threshold.

[0076] The second control submodule is configured to control the three-way valve to be in the second state when the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is greater than or equal to the second temperature.

[0077] The third control submodule is configured to control the three-way valve to be in the first state when the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is less than the second temperature.

[0078] The fourth control submodule is configured to control the three-way valve to be in the first state when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is greater than the second temperature.

[0079] The fifth control submodule is configured to control the three-way valve to be in the second state when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is less than or equal to the second temperature.

[0080] The sixth control submodule is configured to control the three-way valve to be in the first state when the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold.

[0081] Optionally, the device further includes:

[0082] The second control module is configured to control a heater in the heater core circuit to be turned off when the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold.

[0083] Optionally, the device further comprises:

[0084] a third control module, configured to control the three-way valve to be in the second state when the heating function of the air conditioner is in the off state.

[0085] Optionally, the three-way valve comprises a first interface, a second interface and a third interface.

[0086] The first interface accesses the electric pile heat dissipation circuit.

[0087] The second interface and the third interface are connected in series in the warm air core circuit.

[0088] When the three-way valve is in the first state, only the first interface and the second interface are connected.

[0089] When the three-way valve is in the second state, only the second interface and the third interface are connected.

[0090] The first control module is further configured to control the connection state of the first interface, the second interface and the third interface of the three-way valve according to the first temperature, the second temperature and the third temperature.

[0091] Optionally, the warm air core circuit comprises a warm air core, a warm air water pump and a heater.

[0092] A second temperature sensor is arranged at the water outlet of the warm air core.

[0093] The detection module is further configured to detect the second temperature through the second temperature sensor.

[0094] Optionally, the electric pile heat dissipation circuit comprises an electric pile, a fuel cell water pump and a radiator.

[0095] A first temperature sensor is arranged at the water inlet of the electric pile.

[0096] The detection module is further configured to detect the first temperature through the first temperature sensor.

[0097] The control device of the heat management circuit provided in the application detects the first temperature at the water inlet of the electric pile in the electric pile heat dissipation circuit, the second temperature at the water outlet of the warm air core in the warm air core circuit and the third temperature corresponding to the environment in the vehicle when the heating function of the air conditioner is in the on state, determines the three-way valve state matched with the current working condition according to the first temperature, the second temperature and the third temperature, and controls the state of the three-way valve. Compared with the continuous connection of the warm air core circuit and the electric pile heat dissipation circuit, the heating rate of the electric pile and the environment in the vehicle can be improved, and the heat utilization rate of the vehicle and the driving experience of the user can be improved at the same time.

[0098] The embodiment of the present application also provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to realize each process of the control method of the heat management loop and achieve the same technical effects. To avoid repetition, details are not described herein.

[0099] The embodiment of the present application also provides a vehicle, which comprises a processor, a memory, and a computer program stored in the memory and executable on the processor. The computer program is executed by the processor to realize each process of the control method of the heat management loop and achieve the same technical effects. To avoid repetition, details are not described herein.

[0100] For example, Figure 6 An entity structure diagram of a vehicle is shown.

[0101] As Figure 6 shown, the vehicle can include a processor 610, a communications interface 620, a memory 630, and a communications bus 640. The processor 610, the communications interface 620, and the memory 630 can communicate with each other through the communications bus 640. The processor 610 can invoke a logical instruction in the memory 630, and the processor 610 is configured to perform the following steps: detecting a first temperature at a water inlet of a stack in the stack heat dissipation loop, a second temperature at a water outlet of a heater core in the heater core loop, and a third temperature corresponding to an indoor environment, when a heating function of an air conditioner is in an open state; and controlling a state of a three-way valve according to the first temperature, the second temperature, and the third temperature.

[0102] In addition, the logical instruction in the memory 630 can be implemented in the form of a software function unit and sold or used as an independent product. When the logical instruction is stored in a computer readable storage medium, the technical solution of the present application can be embodied in the form of a software product, the computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in each embodiment of the present application. The storage medium described above includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various storage medium that can store program codes.

[0103] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0104] Those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method described in each embodiment of the present application.

[0105] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

[0106] Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the embodiments of the present application can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solutions. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0107] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0108] In the embodiments of the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the embodiments of the apparatus described above are merely schematic, and the division of the units is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0109] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0110] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit.

[0111] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various storage media that can store program codes.

[0112] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A control method for a thermal management loop, characterized in that, The thermal management circuit includes a heater core circuit, a fuel cell stack heat dissipation circuit, and a three-way valve. The three-way valve is connected to both the heater core circuit and the fuel cell stack heat dissipation circuit. The three-way valve has a first state of opening both the heater core circuit and the fuel cell stack heat dissipation circuit, and a second state of disconnecting both the heater core circuit and the fuel cell stack heat dissipation circuit. The method includes: With the air conditioner's heating function on, the first temperature at the fuel cell inlet in the fuel cell heat dissipation circuit, the second temperature at the heater core outlet in the heater core circuit, and the third temperature corresponding to the vehicle interior environment are detected. The state of the three-way valve is controlled based on the first temperature, the second temperature, and the third temperature. The state of the three-way valve is controlled based on the first temperature, the second temperature, and the third temperature, including: When the first temperature is less than the first preset temperature threshold and the third temperature is less than the second preset temperature threshold, the three-way valve is controlled to be in the second state. When the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is greater than or equal to the second temperature, the three-way valve is controlled to be in the second state. When the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is less than the second temperature, the three-way valve is controlled to be in the first state. When the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is greater than the second temperature, the three-way valve is controlled to be in the first state. When the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is less than or equal to the second temperature, the three-way valve is controlled to be in the second state. When the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold, the three-way valve is controlled to be in the first state.

2. The control method for the thermal management loop according to claim 1, characterized in that, The method further includes: When the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold, the heater in the warm air core circuit is controlled to be turned off.

3. The control method for the thermal management loop according to claim 1, characterized in that, The method further includes: When the heating function of the air conditioner is off, the three-way valve is controlled to be in the second state.

4. The control method for the thermal management circuit according to claim 1, characterized in that, The three-way valve includes a first port, a second port, and a third port; The first interface is connected to the heat dissipation circuit of the fuel cell stack; The second interface and the third interface are connected in series to the warm air core circuit; When the three-way valve is in the first state, only the first port and the second port are connected; When the three-way valve is in the second state, only the second port and the third port are connected; The state of the three-way valve is controlled based on the first temperature, the second temperature, and the third temperature, including: The connection status of the first, second, and third ports of the three-way valve is controlled based on the first temperature, the second temperature, and the third temperature.

5. The control method for the thermal management loop according to claim 1, characterized in that, The warm air core circuit includes a warm air core, a warm air pump, and a heater; A second temperature sensor is installed at the water outlet of the heating core; The detection of the second temperature at the outlet of the warm air core in the warm air core circuit includes: The second temperature is detected by the second temperature sensor.

6. The control method for the thermal management loop according to claim 1, characterized in that, The fuel cell stack cooling circuit includes the fuel cell stack, fuel cell water pump, and radiator; A first temperature sensor is installed at the water inlet of the fuel cell stack; The detection of the first temperature at the fuel cell inlet in the fuel cell heat dissipation circuit includes: The first temperature is detected by the first temperature sensor.

7. A control device for a thermal management circuit, characterized in that, The thermal management circuit includes a heater core circuit, a fuel cell stack heat dissipation circuit, and a three-way valve. The three-way valve is connected to both the heater core circuit and the fuel cell stack heat dissipation circuit. The three-way valve has a first state of connecting the heater core circuit and the fuel cell stack heat dissipation circuit, and a second state of disconnecting the heater core circuit and the fuel cell stack heat dissipation circuit. The device includes: The inspection module is used to detect the first temperature at the fuel cell inlet in the fuel cell heat dissipation circuit, the second temperature at the heater core outlet in the heater core circuit, and the third temperature corresponding to the vehicle interior environment when the heating function of the air conditioner is turned on. The first control module is used to control the state of the three-way valve according to the first temperature, the second temperature and the third temperature; The first control module includes: The first control submodule is used to control the three-way valve to be in the second state when the first temperature is less than the first preset temperature threshold and the third temperature is less than the second preset temperature threshold. The second control submodule is used to control the three-way valve to be in the second state when the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is greater than or equal to the second temperature. The third control submodule is used to control the three-way valve to be in the first state when the first temperature is less than the first preset temperature threshold, the third temperature is greater than or equal to the second preset temperature threshold, and the first temperature is less than the second temperature. The fourth control submodule is used to control the three-way valve to be in the first state when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is greater than the second temperature. The fifth control submodule is used to control the three-way valve to be in the second state when the first temperature is greater than or equal to the first preset temperature threshold, the third temperature is less than the second preset temperature threshold, and the first temperature is less than or equal to the second temperature. The sixth control submodule is used to control the three-way valve to be in the first state when the first temperature is greater than or equal to the first preset temperature threshold and the third temperature is greater than or equal to the second preset temperature threshold.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the control method for the thermal management loop as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the control method for the thermal management loop as described in any one of claims 1 to 6.

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