Control system and method of vehicle cooling system, storage medium and program product

Abstract

The invention discloses a control system and method of a vehicle cooling system, a storage medium and a program product. The system comprises a power equipment cooling loop, a warm air heating loop, a cooling liquid heat exchange device and a controller, the power equipment cooling loop is used for controlling first cooling liquid to cool power equipment based on equipment cooling parameters sent by the controller, and the warm air heating loop is used for controlling second cooling liquid to cool the power equipment based on warm air heating parameters sent by the controller. The cooling liquid heat exchange device is used for conducting heat exchange on the first cooling liquid and the second cooling liquid on the basis of heat exchange parameters sent by the controller, and the controller is used for conducting heat exchange on the first cooling liquid and the second cooling liquid on the basis of the equipment temperature of the power equipment and a control instruction input by a user on a vehicle. And determining at least one current working mode of the cooling system, and constructing a system control strategy based on the working mode and the operation parameters of the vehicle-mounted equipment.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control, and in particular to a control system, method, storage medium and program product of a vehicle cooling system. Background Art

[0002] In common vehicle cooling systems, direct cooling devices such as fans and radiators are usually connected to power devices such as batteries and motors that require heat dissipation to cool the power devices. However, this method usually cannot reuse the heat generated by the power equipment, such as using the heat to heat other devices with heat requirements, wasting a lot of heat resources.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] Embodiments of the present invention provide a control system, method, storage medium and program product for a vehicle cooling system, so as to at least solve the technical problem in the related art that the reuse rate of heat generated by the cooling system is low, resulting in waste of heat resources.

[0005] According to one aspect of an embodiment of the present invention, a control system of a vehicle cooling system is provided, comprising: a power equipment cooling circuit, connected to a controller and a power equipment on a vehicle, and used to control a first coolant to cool the power equipment based on equipment cooling parameters sent by the controller, wherein the first coolant flows in the power equipment cooling circuit, and the power equipment is used to characterize equipment that provides power to the vehicle; a warm air heating circuit, connected to a controller and at least one on-board equipment on the vehicle, and used to control a second coolant to heat the on-board equipment based on warm air heating parameters sent by the controller, wherein the on-board equipment is used to characterize other equipment on the vehicle except the power equipment; a coolant heat exchange device, disposed between the power equipment and the warm air heating circuit, and connected to the controller, and used to perform heat exchange between the first coolant and the second coolant based on the heat exchange parameters sent by the controller; a controller, connected to the power equipment and the on-board equipment, and used to determine at least one working mode currently in which the cooling system is located based on the equipment temperature of the power equipment and the control instructions input by a user on the vehicle, and to construct a system control strategy based on the working mode and the operating parameters of the on-board equipment, wherein the parameters included in the system control strategy include at least: equipment cooling parameters, warm air heating parameters, and heat exchange parameters.

[0006] In an embodiment of the present application, the warm air heating parameters include at least: coolant heating parameters, warm air water pump operating parameters and heat distribution parameters, and the warm air heating circuit includes: a water heating heater, used to heat the second coolant based on the coolant heating parameters; a warm air water pump, connected to the water heating heater, used to control the flow of the second coolant in the warm air heating circuit based on the warm air water pump operating parameters; a heat distribution device, connected to the water heating heater, the coolant heat exchange device and the vehicle-mounted equipment, used to control the flow of the second coolant flowing from the water heating heater into the coolant heat exchange device and the vehicle-mounted equipment based on the heat distribution parameters.

[0007] In an embodiment of the present application, the equipment cooling parameters include at least: coolant cooling parameters, first water pump operating parameters, second water pump operating parameters and coolant distribution parameters, and the power equipment cooling circuit includes: a coolant cooling device, used to cool the first coolant based on the coolant cooling parameters; a first water pump, connected to the coolant cooling device, the power equipment and the coolant heat exchange device, used to extract the first coolant to the power equipment or the coolant heat exchange device based on the first water pump operating parameters; a second water pump, connected to the coolant heat exchange device and the power equipment, used to extract the first coolant to the power equipment based on the second water pump operating parameters; a coolant distribution device, connected to the first water pump, the coolant cooling device and the power equipment, used to control the flow rate of the first coolant flowing from the power equipment into the coolant cooling device and the first water pump based on the coolant distribution parameters.

[0008] In an embodiment of the present application, the power equipment cooling circuit includes at least: a battery stack cooling circuit and an electric drive cooling circuit, and the coolant heat exchange device includes: a three-layer flow water-to-water heat exchanger, wherein the battery stack cooling circuit is used to cool the vehicle battery stack, and the electric drive cooling circuit is used to cool the electric drive equipment on the vehicle, the first layer of the three-layer flow water-to-water heat exchanger is connected to the battery stack cooling circuit, the second layer of the three-layer flow water-to-water heat exchanger is connected to the warm air heating circuit, and the third layer of the three-layer flow water-to-water heat exchanger is connected to the electric drive cooling circuit.

[0009] In an embodiment of the present application, the equipment cooling parameters include: electric drive water pump operating parameters, electric drive coolant distribution parameters and electric drive heat dissipation parameters, and the electric drive cooling circuit includes: an electric drive device, connected to a controller, for sending the electric drive temperature of the electric drive device to the controller; an electric drive water pump, connected to the controller, for extracting a third coolant to a three-layer flow water-to-water heat exchanger based on the electric drive water pump operating parameters sent by the controller, wherein the third coolant flows in the electric drive cooling circuit; an electric drive coolant distribution device, connected to the controller, for distributing the third coolant flowing out of the three-layer flow water-to-water heat exchanger to the electric drive heat dissipation device and the electric drive device based on the electric drive coolant distribution parameters sent by the controller; an electric drive heat dissipation device, connected to the controller, for dissipating the third coolant based on the electric drive heat dissipation parameters sent by the controller; and a controller, for constructing the electric drive water pump operating parameters based on the electric drive temperature.

[0010] According to another aspect of an embodiment of the present invention, a method for controlling a vehicle cooling system is also provided, including: obtaining the equipment temperature of at least one power device on the vehicle, and the operating parameters and control instructions of at least one on-board device; based on the equipment temperature and the control instructions, determining at least one working mode in which the cooling system is currently located; based on the working mode and the operating parameters, constructing a system control strategy for the cooling system; and controlling the operation of the cooling system based on the system control strategy.

[0011] In an embodiment of the present application, a system control strategy for a cooling system is constructed based on the working mode and operating parameters, including: obtaining a heat demand table that matches the working mode, and obtaining a heat demand that matches the device identification and operating parameters of the vehicle-mounted device from the heat demand table, wherein the heat demand table is used to store a mapping relationship between the device identification, operating parameters, and heat demand; based on the heat demand, constructing system operating parameters of the cooling system under the working mode; based on the correlation between the working modes, summarizing the system operating parameters to obtain target operating parameters; and constructing a system control strategy based on the target operating parameters.

[0012] In an embodiment of the present application, the power equipment includes at least: a vehicle battery, a vehicle motor, a vehicle battery stack and an electric drive device, and the working modes include at least: a battery cooling mode, a motor cooling mode, a battery heating mode, a motor heating mode, a passenger compartment heating mode, a battery stack cold start heating mode, a battery stack waste heat utilization mode and an electric drive waste heat utilization mode. Based on the device temperature and the control instruction, at least one working mode currently in which the cooling system is located is determined, including: in response to the battery temperature of the vehicle battery being greater than the first battery temperature, determining that the working mode is a battery cooling mode; in response to the battery temperature being less than the second battery temperature, determining that the working mode is a battery heating mode, wherein the second battery temperature is less than the first battery temperature. A battery temperature; in response to the motor temperature of the vehicle motor being greater than the first motor temperature, determining that the operating mode is a motor cooling mode; in response to the motor temperature being less than the second motor temperature, determining that the operating mode is a motor heating mode, wherein the second motor temperature is less than the first motor temperature; in response to the control instruction to start the vehicle battery stack, determining that the operating mode is a battery stack cold start heating mode; in response to the battery stack temperature of the vehicle battery stack being within a safe range and the vehicle battery stack being greater than a preset battery stack temperature, determining that the operating mode is a battery stack waste heat utilization mode, wherein the preset battery stack temperature is within a safe range; in response to the device temperature of the electric drive device being greater than the preset electric drive temperature, determining that the operating mode is an electric drive waste heat utilization mode.

[0013] In an embodiment of the present application, the cooling system at least includes: a water-heating heater, a warm air water pump, a heat distribution device, a fuel cell water-to-water heat exchanger, a second water pump and a coolant distribution device. The system control strategy includes at least: water-heating heating parameters, warm air water pump control parameters, heat distribution parameters, heat exchange parameters, second water pump operating parameters and coolant distribution parameters. In response to the working mode being the fuel cell cold start heating mode, the cooling system operation is controlled based on the system control strategy, including: controlling the water-heating heater to heat the second coolant according to the water-heating heating parameters, and controlling the water-heating heater to heat the second coolant according to the warm air water pump control parameters. Control the heater water pump according to the control parameters to extract the heated second coolant to the heat distribution device; control the heat distribution device to distribute the heated second coolant to the fuel cell stack water-to-water heat exchanger according to the heat distribution parameters, and control the fuel cell stack water-to-water heat exchanger to perform heat exchange between the heated second coolant and the first coolant according to the heat exchange parameters; control the second water pump according to the second water pump operation parameters to extract the first coolant after heat exchange to the vehicle fuel cell stack to heat the vehicle fuel cell stack; control the coolant distribution device to distribute the first coolant flowing out of the vehicle fuel cell stack to the fuel cell stack water-to-water heat exchanger according to the coolant distribution parameters.

[0014] In an embodiment of the present application, in response to the working mode being the battery stack waste heat utilization mode, the operation of the cooling system is controlled based on the system control strategy, including: controlling the coolant distribution device to distribute the first coolant flowing out of the battery stack to the battery stack water-to-water heat exchanger according to the coolant distribution parameters; controlling the battery stack water-to-water heat exchanger to perform heat exchange between the first coolant and the second coolant according to the heat exchange parameters; controlling the water heating heater to heat the second coolant after the heat exchange according to the water heating parameters so that the second temperature of the second coolant reaches a preset temperature; controlling the warm air water pump to extract the heated second coolant to the heat distribution device according to the warm air water pump control parameters, and controlling the heat distribution device to distribute the heated second coolant to the vehicle-mounted equipment according to the heat distribution parameters.

[0015] In an embodiment of the present application, the cooling system also includes: an electric drive water pump and an electric drive coolant distribution device, and the parameters included in the system control strategy also include: electric drive water pump operating parameters and electric drive coolant distribution parameters. In response to the working mode being the electric drive waste heat utilization mode, the cooling system operation is controlled based on the system control strategy, including: extracting the third coolant flowing out of the electric drive equipment to the coolant heat exchange device according to the electric drive water pump operating parameters; controlling the coolant heat exchange device to perform heat exchange on the third coolant, the first coolant and the second coolant according to the heat exchange parameters; controlling the electric drive coolant distribution device according to the electric drive coolant distribution parameters to distribute the third coolant flowing out of the coolant heat exchange device to the electric drive equipment.

[0016] According to another aspect of an embodiment of the present invention, a vehicle phase change energy storage material is also provided, including: a phase change energy storage device storing an executable program; and a controller for running the program, wherein the methods in various embodiments of the present invention are executed when the program is running.

[0017] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0018] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0019] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0020] According to another aspect of the embodiments of the present invention, a computer program is provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0021] In an embodiment of the present invention, a control system of a vehicle cooling system including a power equipment cooling circuit, a warm air heating circuit, a coolant heat exchange device and a controller is adopted. At least one current working mode of the cooling system is determined in real time according to the equipment temperature of the power equipment and the control instructions input by the user, and a system control strategy is formulated according to the working mode and the heat demand of the on-board equipment to control the operation of different equipment in the cooling system. The heat generated by the power equipment can be fully utilized, and the reuse rate of the heat in the cooling system can be improved, thereby solving the technical problem in the related art that the reuse rate of the heat generated by the cooling system is low, resulting in a waste of heat resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 is a structural block diagram of a control system of a vehicle cooling system according to the present application;

[0024] Figure 2 is a schematic diagram of a conventional cooling system according to the present application;

[0025] Figure 3 is a schematic diagram of another conventional cooling system according to the present application;

[0026] Figure 4 is a schematic diagram of a new cooling system according to the present application;

[0027] Figure 5 is a structural block diagram of another new cooling system according to the present application;

[0028] Figure 6 It is a flow chart of a control method of a vehicle cooling system according to the present application. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] According to an embodiment of the present invention, a control system embodiment of a vehicle cooling system is provided. Figure 1 is a structural block diagram of a control system of a vehicle cooling system according to the present application, such as Figure 1 As shown, the system may include:

[0032] The power equipment cooling circuit 102 is connected to the controller 104 and the power equipment 106 on the vehicle, and is used to control the first coolant to cool the power equipment 106 based on the equipment cooling parameters sent by the controller 104 .

[0033] The first coolant flows in a power equipment cooling circuit, and the power equipment is used to represent equipment that provides power for the vehicle.

[0034] It should be noted that, considering that there are usually more devices with heat demand among the devices configured on the vehicle, such as vehicle fuel cell stacks, vehicle batteries and other power equipment, and vehicle-mounted equipment other than power equipment such as passenger compartments and air filters, therefore, in the present application, the temperature of the devices with heat demand on the vehicle can be adjusted in a targeted manner by utilizing the cooling system on the vehicle so that these devices can operate normally. Based on this, it can be understood that the above-mentioned cooling system is actually a device for adjusting the temperature of different equipment on the vehicle, and in order to avoid errors in the cooling system, such as adjusting the temperature of the wrong equipment according to incorrect cooling parameters, which may result in safety risks during operation of the temperature-adjusted equipment, therefore, a control system for controlling the vehicle cooling system is proposed in the present application.

[0035] In an optional scheme of the present embodiment, in order to avoid excessive temperature of equipment on the vehicle, such as the vehicle battery stack, vehicle battery, vehicle motor, etc., which is used to provide power to the vehicle, resulting in safety risks when the vehicle is driving, at least a power equipment cooling circuit for cooling the power equipment can be configured in the cooling system. A first coolant can flow in the power equipment cooling circuit. The temperature of the first coolant is generally less than a first preset threshold value, which may refer to the maximum temperature that the power equipment can reach during normal operation. Correspondingly, the power equipment cooling circuit can be connected to the power equipment to cool the power equipment through the first coolant to avoid excessive temperature of the power equipment, which may cause safety risks. However, in view of the fact that when the first coolant is used to cool the power equipment, the temperature of the first coolant may gradually increase due to heat exchange with the power equipment, resulting in a reduction in the cooling effect of the power equipment cooling circuit on the power equipment, or even a failure to cool the power equipment, therefore, at least one cooling device for cooling the first coolant, such as a fan, a radiator and other devices, may be configured in the power equipment cooling circuit. Furthermore, in order to avoid unreasonable parameters used when using the cooling device to cool the first coolant, resulting in abnormalities in the power equipment, such as the use of too large parameters resulting in the temperature of the first coolant after cooling being too low, thereby affecting the performance of the power equipment after cooling, or the use of too small cooling parameters resulting in If the temperature of the first coolant cannot be reduced in a timely and effective manner, resulting in the temperature of the power equipment being still too high, the above-mentioned controller may be configured in the control system, and the power equipment cooling circuit may be connected to the controller. The controller may send reasonable equipment cooling parameters to the power equipment cooling circuit according to the control instructions input by the user or the real-time temperature of the power equipment. The corresponding power equipment cooling circuit may control the operation of the cooling equipment according to the equipment cooling parameters sent by the controller, so as to reasonably and effectively cool the first coolant, and use the cooled first coolant to cool the power equipment, thereby avoiding the situation where the temperature of the power equipment is too low, affecting the equipment performance, or the temperature of the power equipment is too high, causing safety risks.

[0036] In an optional scheme of the present embodiment, in addition to being connected to the power equipment, the power equipment cooling circuit can also be connected to vehicle-mounted equipment other than the power equipment. When the temperature of the vehicle-mounted equipment is too high and needs to be cooled, or when a control instruction input by the user is received, for example, in a scenario where the temperature is too high in summer, when the user sends a temperature reduction control instruction to the control system, the control system can use the power equipment cooling circuit to directly cool the vehicle-mounted equipment according to the corresponding equipment cooling parameters in the control instruction, so as to avoid the vehicle-mounted equipment from being too high and affecting the user's car experience.

[0037] The warm air heating circuit 108 is connected to the controller and at least one on-board device 110 on the vehicle, and is used to control the second coolant to heat the on-board device 110 based on the warm air heating parameters sent by the controller 104 .

[0038] Among them, on-board equipment is used to characterize other equipment on the vehicle except the power equipment.

[0039] In an optional scheme of the present embodiment, in order to avoid the temperature of vehicle-mounted equipment with heat requirements such as the passenger compartment, brake system, air filter, etc. being too low, for example, the temperature of the passenger compartment is too low, which affects the user's car experience, a warm air heating circuit for heating the vehicle-mounted equipment can also be configured in the cooling system. A second coolant can flow in the warm air heating circuit. The temperature of the second coolant is generally greater than a second preset threshold value. The second preset threshold value may refer to the lowest temperature that the vehicle-mounted equipment can reach during normal operation. Correspondingly, the warm air heating circuit can be connected to the vehicle-mounted equipment to heat the vehicle-mounted equipment through the second coolant to avoid the temperature of the vehicle-mounted equipment being too low, which may reduce the performance of the vehicle-mounted equipment or affect the user's car experience. In view of the fact that when the second coolant is used to heat the vehicle-mounted equipment, the temperature of the second coolant may gradually decrease due to heat exchange with the vehicle-mounted equipment, resulting in a poor heating effect of the warm air heating circuit. Therefore, at least one heating device for heating the second coolant, such as a heater, a heater and the like, may be configured in the warm air heating circuit. Furthermore, in order to avoid unreasonable parameters used when the heating device is used to heat the second coolant, resulting in abnormalities in the vehicle-mounted equipment, such as the use of too large parameters resulting in the temperature of the heated second coolant being too high, resulting in the temperature of the heated vehicle-mounted equipment being too high, affecting the user experience, or the use of too small parameters resulting in the heated second coolant being too high. If the temperature of the second coolant is too low, resulting in the inability to heat the vehicle-mounted equipment stably, the above-mentioned warm air heating circuit can also be connected to the above-mentioned controller, and the controller can send reasonable warm air heating parameters to the warm air heating circuit according to the control instructions input by the user or the real-time temperature of the vehicle-mounted equipment. The corresponding warm air heating circuit can control the operation of the heating equipment according to the warm air heating circuit sent by the controller, so as to reasonably and effectively heat the second coolant, and use the heated second coolant to heat the vehicle-mounted equipment, thereby avoiding the situation where the temperature of the vehicle-mounted equipment is too high to affect the user experience, or the temperature of the vehicle-mounted equipment is too low to make it impossible to heat the vehicle-mounted equipment stably.

[0040] In an optional scheme of the present embodiment, the above-mentioned warm air heating circuit can be connected to the power equipment in addition to the vehicle-mounted equipment. When the temperature of the power equipment is too low and needs to be heated up, or when an instruction from the user to start the power equipment is received, the control system can use the above-mentioned warm air heating circuit to directly heat the power equipment according to the corresponding warm air heating parameters in the control instruction to ensure that the power equipment cannot operate normally due to the temperature being too low.

[0041] The coolant heat exchange device 112 is disposed between the power equipment 106 and the warm air heating circuit 108 and is connected to the controller 104 , and is used to perform heat exchange between the first coolant and the second coolant based on the heat exchange parameters sent by the controller 104 .

[0042] In an optional scheme of the present embodiment, it is taken into account that in real scenarios there may be a situation where the circuit is disconnected from the equipment, for example, the connection between the warm air heating circuit and the power equipment is disconnected, resulting in the inability to use the warm air heating circuit to directly heat the power equipment, or the connection between the power equipment cooling circuit and the vehicle-mounted equipment is disconnected, resulting in the inability to directly use the power equipment cooling circuit to cool the vehicle-mounted equipment. Therefore, when actually configuring the cooling circuit, in order to ensure the heating demand of the power equipment or the cooling demand of the vehicle-mounted equipment, at least one coolant heat exchange device can be configured between the power equipment cooling circuit and the warm air heating circuit to utilize the coolant heat exchange device. The device exchanges the temperature of the first coolant and the second coolant. Correspondingly, when the power equipment has a need to increase the temperature, the control system can first heat the second coolant through the warm air heating circuit, and then use the heated second coolant in the coolant heat exchange device to heat the first coolant, and finally use the heated first coolant to heat the power equipment. Alternatively, when the vehicle-mounted equipment has a need to cool down, the control system can first cool the first coolant through the power equipment cooling circuit, and then use the cooled first coolant in the coolant heat exchange device to cool down the second coolant, and finally use the cooled second coolant to cool down the vehicle-mounted equipment. In order to reasonably exchange heat between the first coolant and the second coolant and avoid continuous heat exchange between the two, which results in the inability to use the first coolant to cool down the power equipment or the inability to use the second coolant to heat up the vehicle-mounted equipment, the above-mentioned coolant heat exchange device can also be connected to the controller, and the controller sends corresponding heat exchange parameters to the coolant heat exchange device, so that the coolant heat exchange device can perform heat exchange between the first coolant and the second coolant in a targeted manner according to the received heat exchange parameters.

[0043] In an optional scheme of this embodiment, if the above-mentioned coolant heat exchange device is arranged between the power equipment cooling circuit and the warm air heating circuit, it is also possible to connect only the power equipment cooling circuit to the power equipment and connect the warm air heating circuit to the vehicle-mounted equipment to reduce the construction cost of the entire vehicle.

[0044] The controller 104 is connected to the power device 106 and the vehicle-mounted device 110, and is used to determine at least one working mode currently in which the cooling system is located based on the device temperature of the power device 106 and the control instructions input by the user on the vehicle, and to build a system control strategy based on the working mode and the operating parameters of the vehicle-mounted device 110.

[0045] The system control strategy includes at least parameters including equipment cooling parameters, warm air heating parameters and heat exchange parameters.

[0046] The above-mentioned working modes may refer to different devices in the cooling system operating in different ways to achieve a mode of heating or cooling the power equipment and on-board equipment, which may include but are not limited to: battery cooling mode, motor cooling mode, battery heating mode, motor heating mode, passenger compartment heating mode, battery stack cold start heating mode, battery stack waste heat utilization mode and electric drive waste heat utilization mode. Different working modes may exist at the same time. Among them, the battery cooling mode, motor cooling mode, battery heating mode, motor heating mode and passenger compartment heating mode may be determined by the temperature of the vehicle battery, vehicle motor and passenger compartment, or may be determined by detecting the user's input command to control the temperature of the battery, motor and passenger compartment. The battery stack cold start heating mode The thermal mode can be determined when a cold start of the vehicle battery stack is detected and the temperature of the vehicle battery stack is low. The battery stack waste heat utilization mode can be determined when the temperature of the vehicle battery stack is detected to be high and there is a heat demand from other equipment on the vehicle. Among them, the battery stack waste heat utilization mode is to reuse the extra heat generated by the vehicle battery stack. For example, the extra heat is applied to the heating of the passenger compartment to reduce the cost of heating the passenger compartment using a warm air heating circuit and the cost of cooling the vehicle battery stack using a power equipment cooling circuit. Therefore, when adjusting the temperature of different equipment in the present application, coolant is used to store excess flow generated in the cooling system, thereby improving the full utilization of the heat in the cooling system.

[0047] In an optional scheme of the present embodiment, in order to accurately send corresponding equipment cooling parameters, warm air heating parameters and heat exchange parameters to the power equipment cooling circuit, warm air heating circuit and coolant heat exchange device, the controller can be connected to the power equipment and the vehicle-mounted equipment to obtain the equipment temperature of the power equipment and the operating parameters of the vehicle-mounted equipment in real time. At the same time, the controller can also detect the control instructions input by the user to determine the current working mode of the cooling system according to the equipment temperature and the control instructions, and determine the heat requirements of different equipment according to the operating parameters of different vehicle-mounted equipment. Finally, according to the determined working mode and heat requirements, a system control strategy for controlling the cooling system can be constructed to send corresponding equipment cooling parameters, warm air heating parameters and heat exchange parameters to the power equipment cooling circuit, warm air heating circuit and coolant heat exchange device.

[0048] In an embodiment of the present invention, a control system of a vehicle cooling system including a power equipment cooling circuit, a warm air heating circuit, a coolant heat exchange device and a controller is adopted. At least one current working mode of the cooling system is determined in real time according to the equipment temperature of the power equipment and the control instructions input by the user, and a system control strategy is formulated according to the working mode and the heat demand of the on-board equipment to control the operation of different equipment in the cooling system. The heat generated by the power equipment can be fully utilized, and the reuse rate of the heat in the cooling system can be improved, thereby solving the technical problem in the related art that the reuse rate of the heat generated by the cooling system is low, resulting in a waste of heat resources.

[0049] In an embodiment of the present application, the warm air heating parameters include at least: coolant heating parameters, warm air water pump operating parameters and heat distribution parameters, and the warm air heating circuit includes: a water heating heater, used to heat the second coolant based on the coolant heating parameters; a warm air water pump, connected to the water heating heater, used to control the flow of the second coolant in the warm air heating circuit based on the warm air water pump operating parameters; a heat distribution device, connected to the water heating heater, the coolant heat exchange device and the vehicle-mounted equipment, used to control the flow of the second coolant flowing from the water heating heater into the coolant heat exchange device and the vehicle-mounted equipment based on the heat distribution parameters.

[0050] In an optional scheme of the present embodiment, in order to facilitate the use of the second coolant to heat the on-board equipment, or to exchange heat with the first coolant, at least a water heater, a warm air water pump and a heat distribution device can be configured in the warm air heating circuit, and the corresponding warm air heating parameters can at least include: coolant heating parameters, warm air water pump operating parameters and heat distribution parameters, wherein the coolant heating parameters can be used to heat the first coolant, and may include: target temperature of the heated coolant, heating time, heating power, heating frequency and other parameters; the warm air water pump operating parameters can be used to control the flow rate of the first coolant, and may include but are not limited to: pumping flow, frequency, cycle duration and other parameters; the heat distribution device can be used to distribute The flow rate of the first coolant flowing to different devices is different. Correspondingly, the water heater can be used to heat the second coolant according to the coolant heating parameters. The warm air water pump can be connected to the water heater to control the flow of the second coolant in the warm air heating circuit according to the warm air water pump operating parameters. The heat distribution device can be connected to the water heater, the coolant heat exchange device and the vehicle-mounted equipment. Considering that different vehicle-mounted equipment has different heat requirements, the heat distribution device can be used to control the flow rate of the second coolant flowing from the water heater to the coolant heat exchange device and the vehicle-mounted equipment on the basis of the heat distribution parameters, so as to achieve targeted distribution of suitable second coolant to different vehicle-mounted equipment and the first coolant.

[0051] In an embodiment of the present application, the equipment cooling parameters include at least: coolant cooling parameters, first water pump operating parameters, second water pump operating parameters and coolant distribution parameters, and the power equipment cooling circuit includes: a coolant cooling device, used to cool the first coolant based on the coolant cooling parameters; a first water pump, connected to the coolant cooling device, the power equipment and the coolant heat exchange device, used to extract the first coolant to the power equipment or the coolant heat exchange device based on the first water pump operating parameters; a second water pump, connected to the coolant heat exchange device and the power equipment, used to extract the first coolant to the power equipment based on the second water pump operating parameters; a coolant distribution device, connected to the first water pump, the coolant cooling device and the power equipment, used to control the flow rate of the first coolant flowing from the power equipment into the coolant cooling device and the first water pump based on the coolant distribution parameters.

[0052] In an optional scheme of the present embodiment, in order to facilitate the change of the temperature of the power equipment, a coolant cooling device, a first water pump, a second water pump, a coolant distribution device and other equipment may be configured in the cooling circuit of the power equipment, and the corresponding equipment cooling parameters may at least include: coolant cooling parameters, first water pump operating parameters, second water pump operating parameters and coolant distribution parameters, wherein the coolant cooling device may include but is not limited to: fans, radiators and other equipment, which can be used to cool the first coolant according to the coolant cooling parameters. The power equipment cooling circuit may include two sub-circuits, the first sub-circuit is directly connected to the coolant cooling device, and is used to transmit the first coolant after cooling, and the second sub-circuit is connected to the coolant heat exchange device, and is used to transmit the first coolant after heat exchange. Based on this, a first water pump can be set in the first sub-circuit, and the first water pump is connected to the coolant heat exchange device, the power equipment and the coolant heat exchange device to extract the first coolant to the power equipment or the coolant heat exchange device according to the first water pump operation parameters, and a second water pump is set in the second sub-circuit, and the second water pump is connected to the coolant heat exchange device and the power equipment to extract the first coolant to the power equipment according to the second water pump operation parameters. Considering that different power equipment or the first coolant has different requirements for heat, the above-mentioned coolant distribution device can also be configured in the power equipment, and the coolant distribution device is connected to the first water pump, the coolant cooling device and the power equipment to control the flow of the first coolant flowing from the power equipment into the coolant cooling device and the first water pump according to the above-mentioned coolant distribution parameters.

[0053] In an embodiment of the present application, the power equipment cooling circuit includes at least: a battery stack cooling circuit and an electric drive cooling circuit, and the coolant heat exchange device includes: a three-layer flow water-to-water heat exchanger, wherein the battery stack cooling circuit is used to cool the vehicle battery stack, and the electric drive cooling circuit is used to cool the electric drive equipment on the vehicle, the first layer of the three-layer flow water-to-water heat exchanger is connected to the battery stack cooling circuit, the second layer of the three-layer flow water-to-water heat exchanger is connected to the warm air heating circuit, and the third layer of the three-layer flow water-to-water heat exchanger is connected to the electric drive cooling circuit.

[0054] In an optional scheme of the present embodiment, considering that the power equipment will generate a certain amount of heat during operation, this heat can usually be absorbed by the first coolant after cooling. If there are other devices with heat requirements on the vehicle at this time, the excess heat generated by the power equipment can actually be applied to other devices with heat requirements to reduce the operating costs of the power equipment cooling circuit and the heater circuit. Considering that among multiple power equipment, the heat generated by the vehicle electric drive is generally large, power equipment such as the vehicle electric drive, the vehicle battery stack and the vehicle battery can operate independently of each other. Therefore, the aforementioned working mode can also include an electric drive waste heat utilization mode to utilize the additional heat generated by the vehicle electric drive to heat other devices with heat requirements, such as heating the vehicle battery stack during the cold start process. Based on this, the coolant heat exchange device configured in the cooling system can be a three-layer flow water-to-water heat exchanger. Correspondingly, the first layer of the three-layer flow water-to-water heat exchanger can be connected to the battery stack cooling circuit, the second layer of the three-layer flow water-to-water heat exchanger can be connected to the heater circuit, and the third layer of the three-layer flow water-to-water heat exchanger can be connected to the electric drive cooling circuit.

[0055] In an embodiment of the present application, the equipment cooling parameters include: electric drive water pump operating parameters, electric drive coolant distribution parameters and electric drive heat dissipation parameters, and the electric drive cooling circuit includes: an electric drive device, connected to a controller, for sending the electric drive temperature of the electric drive device to the controller; an electric drive water pump, connected to the controller, for extracting a third coolant to a three-layer flow water-to-water heat exchanger based on the electric drive water pump operating parameters sent by the controller, wherein the third coolant flows in the electric drive cooling circuit; an electric drive coolant distribution device, connected to the controller, for distributing the third coolant flowing out of the three-layer flow water-to-water heat exchanger to the electric drive heat dissipation device and the electric drive device based on the electric drive coolant distribution parameters sent by the controller; an electric drive heat dissipation device, connected to the controller, for dissipating the third coolant based on the electric drive heat dissipation parameters sent by the controller; and a controller, for constructing the electric drive water pump operating parameters based on the electric drive temperature.

[0056] In an optional scheme of the present embodiment, in order to facilitate the control of the temperature of the electric drive equipment on the vehicle, the electric drive cooling circuit may include at least: an electric drive equipment, an electric drive water pump and an electric drive coolant distribution device, and the corresponding equipment cooling parameters may include at least: an electric drive water pump operating parameter, an electric drive coolant distribution parameter and an electric drive heat dissipation parameter, wherein the electric drive equipment may send the electric drive temperature to the controller, and the controller determines whether the temperature of the electric drive of the electric drive equipment is too high, so that the controller can construct the electric drive water pump operating parameters according to the temperature, and the electric drive water pump can be connected to the controller to extract the third coolant to the three-layer flow water-to-water heat exchanger according to the electric drive water pump operating parameters sent by the controller, wherein the third coolant flows in the electric drive cooling circuit, and the electric drive coolant distribution device can also be connected to the controller to According to the electric drive coolant distribution parameters sent by the controller, the third coolant flowing out of the three-layer flow water-to-water heat exchanger is distributed to the electric drive heat dissipation device and the electric drive equipment. For example, if the temperature of the third coolant after passing through the coolant heat exchange device is low and can continue to be used to cool the electric drive equipment, the electric drive coolant distribution device can be directly used to re-transmit the third coolant to the electric drive equipment for cooling. If the temperature of the third coolant after passing through the cooling heat exchange device is high, the electric drive coolant distribution device can be used to transmit the third coolant to the electric drive heat dissipation device. The electric drive heat dissipation device can be connected to the controller to dissipate the heat of the third coolant according to the electric drive heat dissipation parameters sent by the controller, and re-transmit the third coolant after heat dissipation to the electric drive equipment to cool the electric drive equipment.

[0057] For ease of understanding, Figure 2 201 represents a cooling device, such as a fan, a radiator and the like, which can be used to cool the coolant; 202 represents a water temperature sensor, which can be used to detect the temperature of the coolant; 203 represents a stack water pump, which can be used to control the flow of the coolant in the cooling system; 204 represents a deionization tank, which can be used to reduce the content of conductive ions in the coolant; 205 represents a vehicle stack, which can be used to provide power for the vehicle; 206 represents a controller, which can be used to control the operation of cooling equipment, stack water pump, deionization tank and other water pumps; 207 represents a flow limiting valve; 208 represents an expansion kettle, through Figure 2 The cooling system shown can cool the coolant to a preset temperature to cool the battery stack. However, the heat generated by the vehicle battery stack cannot be reused in this cooling system, resulting in insufficient heat utilization and waste of cooling resources. In addition, in a low temperature environment or when the battery stack water management system is not perfect, the vehicle battery stack may have problems such as slow cold start and low reaction efficiency. Figure 2 The problems in Figure 2By improving the cooling system shown, Figure 3 Another conventional cooling system is shown. Figure 3 is a schematic diagram of another conventional cooling system according to the present application, wherein 301 represents a water heater, which can be used to heat the coolant, 302 represents a coolant distribution device, which can be used to determine the flow direction and flow target of the coolant, and Figure 3 The cooling system shown can effectively improve the efficiency of the vehicle's battery stack during cold start, but if there are many circuits used to cool the power equipment, directly adding a warm air heating circuit to the cooling circuit in this way, that is, adding a water heater, will greatly increase the construction cost of the entire vehicle. Based on this, in order to maintain the temperature of the power equipment or vehicle-mounted equipment while reducing the construction cost of the entire vehicle, it is proposed in the present application that the warm air heating circuit can be independently arranged in the cooling system, and through a coolant heat exchange device, the second coolant flowing in the warm air heating circuit and the first coolant flowing in the power equipment cooling circuit can be heat exchanged. Figure 4401 represents a coolant heat exchange device, 402 represents a heater water pump, 403 represents a heat distribution device, 404 represents an on-board device with heat demand, 405 represents an auxiliary water pump, which can be used to extract coolant from the coolant heat exchange device. In the cooling system proposed in the present application, the heater circuit and the power equipment cooling system can be connected through the coolant heat exchange device. When the power equipment has a heat demand, the control system can first use the water heater in the heater circuit to heat the second coolant. The heated second coolant can flow into the on-board device to heat the on-board device, or flow into the coolant heat exchange device. The second coolant is heat-exchanged with the first coolant flowing in the power equipment cooling circuit through the coolant heat exchange device to increase the temperature of the first coolant, thereby utilizing the first coolant after heat exchange. The coolant heats the power equipment, for example, heats the vehicle battery stack during the cold start process, thereby improving the cold start efficiency of the vehicle battery stack, and when the temperature of the power equipment is high, for example, the temperature of the vehicle battery stack is high, the control system can also transfer the first coolant flowing out of the power equipment to the coolant heat exchange device, so as to heat the first coolant storing excess heat of the power equipment with the second coolant in the warm air heating circuit, thereby increasing the temperature of the second coolant, so as to reduce the resources consumed by the water heater when heating the second coolant, and improve the utilization rate of the excess heat generated by the power equipment. At the same time, in the present application, different power equipment cooling circuits and warm air heating circuits are connected by a coolant heat exchange device, rather than adding an additional circuit for heating the coolant in the power equipment cooling circuit, which can also greatly reduce the construction cost of the cooling system and reduce the waste of vehicle construction resources. Furthermore, considering that there may be a first power device on the vehicle that generates excess heat for a long time, such as an electric drive device, and a second power device that has a heat demand, such as a vehicle battery stack that is undergoing a cold start, or an on-board device that needs to be heated, such as a passenger compartment, the coolant heat exchange device can be set as a multi-layer flow water-to-water heat exchanger, and the multi-layer flow water-to-water heat exchanger is connected to multiple power device cooling circuits and warm air heating circuits to achieve the operation of exchanging coolants in multiple circuits at the same time. Based on this, taking the cooling circuit in which the electric drive device is located as an example, Figure 5It is a structural block diagram of another new cooling system shown in the present application, wherein 501 represents an electric drive device, 502 represents an electric drive radiator, 503 represents an electric drive water pump, and 504 represents an electric drive coolant distribution device. When the temperature of the electric drive device is high, the third coolant in the cooling circuit where the electric drive water pump is located can be transmitted to the coolant heat exchange device, that is, the multi-layer flow water-to-water heat exchanger, through the electric drive water pump, to exchange heat with the coolant in other circuits. The third coolant after the heat exchange can enter the electric drive radiator through the electric drive coolant distribution device for heat dissipation, and be retransmitted to the electric drive device to continue to cool the electric drive device, or if the temperature of the third coolant after the heat exchange is low, the third coolant can be directly transmitted to the electric drive device to cool the electric drive device.

[0058] According to an embodiment of the present invention, a control method for a vehicle cooling system is also provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0059] Figure 6 is a flow chart of a control method of a vehicle cooling system according to the present application, such as Figure 1 As shown, the method comprises the following steps:

[0060] Step S602, obtaining the device temperature of at least one power device on the vehicle, and the operating parameters and control instructions of at least one vehicle-mounted device.

[0061] In an optional scheme of the present embodiment, in order to reasonably control the operation of the cooling system on the vehicle so as to reduce the operating cost of the cooling system and make full use of the heat generated by the cooling system, the control system can first obtain the equipment temperature of at least one power device on the vehicle and the operating parameters of at least one on-board device with heat demand on the vehicle, and at the same time detect the control instructions input by the user on the vehicle to determine whether the control instructions are instructions for adjusting the temperature of different equipment on the vehicle.

[0062] Step S604: determining at least one current operating mode of the cooling system based on the device temperature and the control instruction.

[0063] In an optional scheme of the present embodiment, considering that in different working modes, the operating methods of different devices in the cooling system may be different, and different working modes can exist at the same time, therefore, in order to accurately control the operation of the cooling system, the control system can first determine at least one working model that the cooling system is currently in based on the acquired device temperature and control instructions.

[0064] Step S606: constructing a system control strategy for the cooling system based on the working mode and operating parameters.

[0065] In an optional scheme of this embodiment, after determining the current working mode of the cooling system, the control system can specify different device control strategies for different working modes based on the current heat requirements of different devices, that is, the above-mentioned operating parameters, and then summarize the constructed device control strategies to obtain the above-mentioned system control strategy.

[0066] Step S608: Control the operation of the cooling system based on the system control strategy.

[0067] After the system control strategy is constructed, the control system can control the operation of the cooling system according to the system control strategy.

[0068] In an embodiment of the present application, a system control strategy for a cooling system is constructed based on the working mode and operating parameters, including: obtaining a heat demand table that matches the working mode, and obtaining a heat demand that matches the device identification and operating parameters of the vehicle-mounted device from the heat demand table, wherein the heat demand table is used to store a mapping relationship between the device identification, operating parameters, and heat demand; based on the heat demand, constructing system operating parameters of the cooling system under the working mode; based on the correlation between the working modes, summarizing the system operating parameters to obtain target operating parameters; and constructing a system control strategy based on the target operating parameters.

[0069] In an optional scheme of the present embodiment, in order to ensure the accuracy of the constructed system control strategy, the control system can first obtain a heat demand table that matches the currently determined working mode, and obtain the heat demand that matches the device identification and operating parameters of the vehicle-mounted device from the heat demand table to determine the current heat demand of different vehicle-mounted devices, and then construct the system operating parameters of the cooling system under the corresponding working mode based on the heat demand. Finally, the constructed system operating parameters are summarized according to the correlation between different working modes to obtain the target operating parameters currently used to control the operation of the cooling system. Based on the target operating parameters, the control system can formulate a system control strategy for controlling the operation of the cooling system.

[0070] In an embodiment of the present application, the power equipment includes at least: a vehicle battery, a vehicle motor, a vehicle battery stack and an electric drive device, and the working modes include at least: a battery cooling mode, a motor cooling mode, a battery heating mode, a motor heating mode, a passenger compartment heating mode, a battery stack cold start heating mode, a battery stack waste heat utilization mode and an electric drive waste heat utilization mode. Based on the device temperature and the control instruction, at least one working mode currently in which the cooling system is located is determined, including: in response to the battery temperature of the vehicle battery being greater than the first battery temperature, determining that the working mode is a battery cooling mode; in response to the battery temperature being less than the second battery temperature, determining that the working mode is a battery heating mode, wherein the second battery temperature is less than the first battery temperature. A battery temperature; in response to the motor temperature of the vehicle motor being greater than the first motor temperature, determining that the operating mode is a motor cooling mode; in response to the motor temperature being less than the second motor temperature, determining that the operating mode is a motor heating mode, wherein the second motor temperature is less than the first motor temperature; in response to the control instruction to start the vehicle battery stack, determining that the operating mode is a battery stack cold start heating mode; in response to the battery stack temperature of the vehicle battery stack being within a safe range and the vehicle battery stack being greater than a preset battery stack temperature, determining that the operating mode is a battery stack waste heat utilization mode, wherein the preset battery stack temperature is within a safe range; in response to the device temperature of the electric drive device being greater than the preset electric drive temperature, determining that the operating mode is an electric drive waste heat utilization mode.

[0071] In an optional scheme of this embodiment, the power equipment on the vehicle may include but is not limited to: vehicle batteries, vehicle motors, vehicle battery stacks and electric drive equipment, and the operating modes of the cooling system may include but are not limited to: battery cooling mode, motor cooling mode, battery heating mode, motor heating mode, passenger compartment heating mode, battery stack cold start heating mode, battery stack waste heat utilization mode and electric drive waste heat utilization mode.

[0072] When determining the operating mode of the cooling system according to the equipment temperature of the power equipment and the control instructions input by the user, if it is detected that the battery temperature of the vehicle battery is greater than the first battery temperature, the operating mode can be determined to be the battery cooling mode; if it is detected that the battery temperature is less than the second battery temperature, the operating mode can be determined to be the battery heating mode, wherein the second battery temperature is less than the first battery temperature, the first battery temperature may refer to the maximum temperature that the vehicle battery can reach during normal operation, and the second battery temperature may refer to the minimum temperature that the vehicle battery can reach during normal operation; if it is detected that the motor temperature of the vehicle motor is greater than the first motor temperature, the operating mode can be determined to be the motor cooling mode; if it is detected that the motor temperature is less than the second motor temperature , it can be determined that the working mode is the motor heating mode, wherein the second motor temperature is lower than the first motor temperature, the first motor temperature may refer to the maximum temperature that the vehicle motor can reach when operating normally, and the second motor temperature may refer to the minimum temperature that the vehicle motor can reach when operating normally; if it is detected that the control instruction is to start the vehicle battery stack, it can be determined that the working mode is the battery stack cold start heating mode; if it is detected that the battery stack temperature of the vehicle battery stack is within a safe range, and the vehicle battery stack temperature is greater than a preset battery stack temperature, it can be determined that the working mode is the battery stack waste heat utilization mode, wherein the preset battery stack temperature is within a safe range; if it is detected that the device temperature of the electric drive device is greater than the preset electric drive temperature, it can be determined that the working mode is the electric drive waste heat utilization mode.

[0073] In an embodiment of the present application, the cooling system at least includes: a water-heating heater, a warm air water pump, a heat distribution device, a fuel cell water-to-water heat exchanger, a second water pump and a coolant distribution device. The system control strategy includes at least: water-heating heating parameters, warm air water pump control parameters, heat distribution parameters, heat exchange parameters, second water pump operating parameters and coolant distribution parameters. In response to the working mode being the fuel cell cold start heating mode, the cooling system operation is controlled based on the system control strategy, including: controlling the water-heating heater to heat the second coolant according to the water-heating heating parameters, and controlling the water-heating heater to heat the second coolant according to the warm air water pump control parameters. Control the heater water pump according to the control parameters to extract the heated second coolant to the heat distribution device; control the heat distribution device to distribute the heated second coolant to the fuel cell stack water-to-water heat exchanger according to the heat distribution parameters, and control the fuel cell stack water-to-water heat exchanger to perform heat exchange between the heated second coolant and the first coolant according to the heat exchange parameters; control the second water pump according to the second water pump operation parameters to extract the first coolant after heat exchange to the vehicle fuel cell stack to heat the vehicle fuel cell stack; control the coolant distribution device to distribute the first coolant flowing out of the vehicle fuel cell stack to the fuel cell stack water-to-water heat exchanger according to the coolant distribution parameters.

[0074] In an optional scheme of the present embodiment, the cooling system may include at least: a water-heating heater, a warm air water pump, a heat distribution device, a stack water-to-water heat exchanger, a second water pump and a coolant distribution device, and the corresponding system control strategy may include at least: water-heating heating parameters, warm air water pump control parameters, heat distribution parameters, heat exchange parameters, second water pump operating parameters and coolant distribution parameters. When it is determined that the current working mode of the cooling system is the stack cold start heating mode, it means that the vehicle stack needs to be preheated to ensure the normal startup of the vehicle stack. Based on this, the control system can first heat the second coolant according to the above-mentioned water heating parameters. Considering that there may be other equipment that needs to be heated on the vehicle, after heating the second coolant, the control system can further control the warm air water pump to extract the heated second coolant into the heat distribution device according to the warm air water pump control parameters, and then control the heat distribution device to distribute the heated second coolant to the stack water-to-water heat exchanger according to the heat distribution parameters, so that the heated second coolant and the first coolant can be heat exchanged through the stack water-to-water heat exchanger according to the above-mentioned heat exchange parameters to increase the temperature of the first coolant. Finally, the control system can control the second water pump to extract the first coolant after heat exchange to the vehicle battery stack according to the operating parameters of the second water pump, so as to heat the vehicle battery stack. Considering that the heating of the vehicle battery stack is continuous, when using the first coolant to heat the vehicle battery stack, the coolant distribution device can be used to directly distribute the first coolant flowing out of the vehicle battery stack to the battery stack water-to-water heat exchanger according to the coolant distribution parameters, without distributing the first coolant to the cooling equipment for cooling, thereby reducing the cost of heating the first coolant and improving the efficiency of heating the vehicle battery stack.

[0075] In an embodiment of the present application, in response to the working mode being the battery stack waste heat utilization mode, the operation of the cooling system is controlled based on the system control strategy, including: controlling the coolant distribution device to distribute the first coolant flowing out of the battery stack to the battery stack water-to-water heat exchanger according to the coolant distribution parameters; controlling the battery stack water-to-water heat exchanger to perform heat exchange between the first coolant and the second coolant according to the heat exchange parameters; controlling the water heating heater to heat the second coolant after the heat exchange according to the water heating parameters so that the second temperature of the second coolant reaches a preset temperature; controlling the warm air water pump to extract the heated second coolant to the heat distribution device according to the warm air water pump control parameters, and controlling the heat distribution device to distribute the heated second coolant to the vehicle-mounted equipment according to the heat distribution parameters.

[0076] In an optional solution of this embodiment, if the temperature of the vehicle battery stack is high and there are other devices on the vehicle that have heat requirements, the heat generated by the vehicle battery stack can be distributed to other devices to reduce the cost consumed by the warm air heating circuit when generating heat. Based on this, when it is detected that the working mode of the cooling system is the battery stack waste heat utilization mode, the control system can control the coolant distribution device to distribute the first coolant flowing out of the battery stack to the battery stack water-water heat exchanger according to the coolant distribution parameters. At this time, the heat generated by the vehicle battery stack is absorbed in the first coolant. In the battery stack water-water heat exchanger, the control system can perform heat exchange on the first coolant and the second coolant according to the heat exchange parameters to increase the temperature of the second coolant. Considering that the heat generated by the vehicle battery stack is limited, increasing the temperature of the second coolant only by heat exchange may not be enough to meet the heat requirements of other devices. Therefore, while performing heat exchange on the second coolant, the control system can also control the water heater to heat the second coolant after heat exchange according to the water heating parameters so that the second temperature of the second coolant reaches the preset temperature, that is, the second coolant can meet the heat requirements of other devices. After the temperature of the second coolant reaches the preset temperature, the control system can further control the heater water pump to extract the heated second coolant into the heat distribution device according to the heater water pump control parameters, and control the heat distribution device to distribute the heated second coolant to the vehicle-mounted equipment according to the heat distribution parameters.

[0077] In an embodiment of the present application, the cooling system also includes: an electric drive water pump and an electric drive coolant distribution device, and the parameters included in the system control strategy also include: electric drive water pump operating parameters and electric drive coolant distribution parameters. In response to the working mode being the electric drive waste heat utilization mode, the cooling system operation is controlled based on the system control strategy, including: extracting the third coolant flowing out of the electric drive equipment to the coolant heat exchange device according to the electric drive water pump operating parameters; controlling the coolant heat exchange device to perform heat exchange on the third coolant, the first coolant and the second coolant according to the heat exchange parameters; controlling the electric drive coolant distribution device according to the electric drive coolant distribution parameters to distribute the third coolant flowing out of the coolant heat exchange device to the electric drive equipment.

[0078] In an optional scheme of the present embodiment, considering that the electric drive equipment on the vehicle will also generate more heat during operation, the additional heat generated by the electric drive equipment can also be used to heat other on-board equipment or power equipment. Based on this, the cooling system can also include: an electric drive water pump and an electric drive coolant distribution device. The parameters included in the system control strategy can also include: electric drive water pump operation parameters and electric drive coolant distribution parameters. When it is detected that the temperature of the electric drive equipment is high and there are other equipment with heat demand, that is, the cooling system is in the electric drive waste heat utilization mode, the control system can first extract the third coolant flowing out of the electric drive equipment into the coolant heat exchange device according to the electric drive water pump operation parameters, and control the coolant heat exchange device to perform heat exchange on the third coolant, the first coolant and the second coolant according to the heat exchange parameters to increase the temperature of the first coolant and the second coolant, and reduce the temperature of the third coolant. After the heat exchange, the control system can control the operation of the electric drive coolant distribution device according to the electric drive coolant distribution parameters to distribute the third coolant flowing out of the coolant heat exchange device to the electric drive equipment to reabsorb the heat generated by the electric drive equipment.

[0079] According to an embodiment of the present invention, a vehicle phase change energy storage material is also provided, including: a phase change energy storage device storing an executable program; and a controller for running the program, wherein the methods in various embodiments of the present invention are executed when the program is running.

[0080] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0082] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0083] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0084] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0085] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control system for a vehicle cooling system, characterized in that: include: A power equipment cooling circuit, connected to the controller and the power equipment on the vehicle, for controlling a first coolant to cool the power equipment based on equipment cooling parameters sent by the controller, wherein the first coolant flows in the power equipment cooling circuit, and the power equipment is used to represent equipment that provides power to the vehicle; a warm air heating circuit, connected to the controller and at least one on-board device on the vehicle, and used to control the second coolant to heat the on-board device based on the warm air heating parameters sent by the controller, wherein the on-board device is used to characterize other devices on the vehicle except the power device; a coolant heat exchange device, disposed between the power equipment and the warm air heating circuit, and connected to the controller, for performing heat exchange between the first coolant and the second coolant based on the heat exchange parameters sent by the controller; The controller is connected to the power equipment and the vehicle-mounted equipment, and is used to determine at least one working mode currently in which the cooling system is located based on the equipment temperature of the power equipment and the control instructions input by the user on the vehicle, and to construct a system control strategy based on the working mode and the operating parameters of the vehicle-mounted equipment, wherein the parameters included in the system control strategy include at least: the equipment cooling parameters, the warm air heating parameters and the heat exchange parameters.

2. The control system of the vehicle cooling system according to claim 1, characterized in that: The warm air heating parameters at least include: coolant heating parameters, warm air water pump operating parameters and heat distribution parameters, and the warm air heating circuit includes: a water heater, configured to heat the second coolant based on the coolant heating parameter; a warm air water pump connected to the water heater and used to control the flow of the second coolant in the warm air heating circuit based on the operating parameters of the warm air water pump; A heat distribution device is connected to the water heater, the coolant heat exchange device and the vehicle-mounted equipment, and is used to control the flow rate of the second coolant flowing from the water heater to the coolant heat exchange device and the vehicle-mounted equipment based on the heat distribution parameters.

3. The control system of the vehicle cooling system according to claim 1, characterized in that: The equipment cooling parameters at least include: coolant cooling parameters, first water pump operating parameters, second water pump operating parameters and coolant distribution parameters, and the power equipment cooling circuit includes: a coolant cooling device, configured to cool the first coolant based on the coolant cooling parameter; a first water pump connected to the coolant cooling device, the power equipment and the coolant heat exchange device, and configured to extract the first coolant to the power equipment or the coolant heat exchange device based on an operating parameter of the first water pump; a second water pump connected to the coolant heat exchange device and the power equipment, and configured to extract the first coolant to the power equipment based on an operating parameter of the second water pump; A coolant distribution device is connected to the first water pump, the coolant cooling device and the power equipment, and is used to control the flow rate of the first coolant flowing from the power equipment into the coolant cooling device and the first water pump based on the coolant distribution parameters.

4. The control system of a vehicle cooling system according to claim 1, characterized in that: The power equipment cooling circuit at least includes: a battery stack cooling circuit and an electric drive cooling circuit, and the coolant heat exchange device includes: a three-layer flow water-to-water heat exchanger, wherein the battery stack cooling circuit is used to cool the vehicle battery stack, and the electric drive cooling circuit is used to cool the electric drive equipment on the vehicle, the first layer of the three-layer flow water-to-water heat exchanger is connected to the battery stack cooling circuit, the second layer of the three-layer flow water-to-water heat exchanger is connected to the warm air heating circuit, and the third layer of the three-layer flow water-to-water heat exchanger is connected to the electric drive cooling circuit.

5. The control system of the vehicle cooling system according to claim 4, characterized in that: The equipment cooling parameters include: electric drive water pump operating parameters, electric drive coolant distribution parameters and electric drive heat dissipation parameters. The electric drive cooling circuit includes: The electric drive device is connected to the controller and is used to send the electric drive temperature of the electric drive device to the controller; an electric drive water pump connected to the controller, and configured to extract a third coolant to the three-layer flow water-to-water heat exchanger based on an operating parameter of the electric drive water pump sent by the controller, wherein the third coolant flows in the electric drive cooling circuit; an electric drive coolant distribution device, connected to the controller, for distributing the third coolant flowing out of the three-layer flow water-to-water heat exchanger to the electric drive heat dissipation device and the electric drive equipment based on the electric drive coolant distribution parameter sent by the controller; The electric drive heat dissipation device is connected to the controller and is used to perform heat dissipation processing on the third coolant based on the electric drive heat dissipation parameters sent by the controller; The controller is used to establish operating parameters of the electric drive water pump based on the electric drive temperature.

6. A method for controlling a vehicle cooling system, characterized in that: include: Obtaining the device temperature of at least one power device on the vehicle, and the operating parameters and control instructions of at least one on-board device; Based on the device temperature and the control instruction, determining at least one operating mode currently in which the cooling system is located; Based on the working mode and the operating parameters, construct a system control strategy for the cooling system; The cooling system operation is controlled based on the system control strategy.

7. The method according to claim 6, characterized in that Based on the working mode and the operating parameters, a system control strategy for the cooling system is constructed, including: Obtaining a heat demand table matching the working mode, and obtaining a heat demand matching the device identification and the operating parameters of the vehicle-mounted device from the heat demand table, wherein the heat demand table is used to store a mapping relationship between the device identification, the operating parameters, and the heat demand; Based on the heat demand, constructing system operating parameters of the cooling system in the working mode; Based on the correlation between the working modes, the system operating parameters are summarized to obtain target operating parameters; The system control strategy is constructed based on the target operating parameters.

8. The method according to claim 6, characterized in that The power equipment at least includes: a vehicle battery, a vehicle motor, a vehicle battery stack and an electric drive device, and the working modes at least include: a battery cooling mode, a motor cooling mode, a battery heating mode, a motor heating mode, a passenger compartment heating mode, a battery stack cold start heating mode, a battery stack waste heat utilization mode and an electric drive waste heat utilization mode. Based on the device temperature and the control instruction, determining at least one working mode currently in which the cooling system is located includes: In response to a battery temperature of the vehicle battery being greater than a first battery temperature, determining that the operating mode is the battery cooling mode; In response to the battery temperature being lower than a second battery temperature, determining that the operation mode is the battery heating mode, wherein the second battery temperature is lower than the first battery temperature; In response to a motor temperature of the vehicle motor being greater than a first motor temperature, determining that the operating mode is the motor cooling mode; In response to the motor temperature being lower than a second motor temperature, determining that the operation mode is the motor heating mode, wherein the second motor temperature is lower than the first motor temperature; In response to the control instruction to start the vehicle battery stack, determining that the operating mode is a cold start heating mode of the battery stack; In response to the stack temperature of the vehicle stack being within a safe range and the vehicle stack being greater than a preset stack temperature, determining that the operating mode is the stack waste heat utilization mode, wherein the preset stack temperature is within the safe range; In response to a device temperature of the electric drive device being greater than a preset electric drive temperature, the operating mode is determined to be the electric drive waste heat utilization mode.

9. The method according to claim 8, characterized in that The cooling system at least includes: a water heater, a warm air water pump, a heat distribution device, a stack water-to-water heat exchanger, a second water pump and a coolant distribution device. The system control strategy includes at least: water heating parameters, warm air water pump control parameters, heat distribution parameters, heat exchange parameters, second water pump operation parameters and coolant distribution parameters. In response to the working mode being the stack cold start heating mode, the cooling system is controlled to operate based on the system control strategy, including: Controlling the water heater to heat the second coolant according to the water heating parameters, and controlling the warm air water pump to extract the heated second coolant to the heat distribution device according to the warm air water pump control parameters; Controlling the heat distribution device to distribute the heated second coolant to the stack water-to-water heat exchanger according to the heat distribution parameter, and controlling the stack water-to-water heat exchanger to perform heat exchange between the heated second coolant and the first coolant according to the heat exchange parameter; controlling the second water pump to pump the first coolant after heat exchange to the vehicle fuel cell stack according to the operating parameters of the second water pump, so as to heat the vehicle fuel cell stack; The coolant distribution device is controlled according to the coolant distribution parameters to distribute the first coolant flowing out of the vehicle fuel cell stack to the fuel cell stack water-to-water heat exchanger.

10. The method according to claim 8, characterized in that In response to the working mode being the stack waste heat utilization mode, controlling the cooling system to operate based on the system control strategy, including: Controlling the coolant distribution device to distribute the first coolant flowing out of the fuel cell stack to the fuel cell stack water-water heat exchanger according to the coolant distribution parameter; Controlling the stack water-to-water heat exchanger to perform heat exchange between the first coolant and the second coolant according to the heat exchange parameters; Controlling the water heater to heat the second coolant after the heat exchange according to the water heater heating parameter, so that the second temperature of the second coolant reaches a preset temperature; The heater water pump is controlled according to the heater water pump control parameters to extract the heated second coolant to the heat distribution device, and the heat distribution device is controlled according to the heat distribution parameters to distribute the heated second coolant to the vehicle-mounted equipment.

11. The method according to claim 8, characterized in that The cooling system further includes: an electric drive water pump and an electric drive coolant distribution device. The parameters included in the system control strategy also include: an electric drive water pump operation parameter and an electric drive coolant distribution parameter. In response to the working mode being the electric drive waste heat utilization mode, the cooling system operation is controlled based on the system control strategy, including: extracting the third coolant flowing out of the electric drive device to the coolant heat exchange device according to the operating parameters of the electric drive water pump; Controlling the coolant heat exchange device to perform heat exchange on the third coolant, the first coolant, and the second coolant according to the heat exchange parameters; The electric drive coolant distribution device is controlled according to the electric drive coolant distribution parameter to distribute the third coolant flowing out of the coolant heat exchange device to the electric drive equipment.

12. A vehicle phase change energy storage material, characterized in that: include: A phase change energy storage device storing an executable program; A controller is used to run the program, wherein the program executes the method according to any one of claims 8 to 11 when running.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method according to any one of claims 8 to 11.

14. A computer program product, characterized in that It comprises a computer program which, when executed by a processor, implements the method according to any one of claims 8 to 11.

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