Cooling system for vehicle, battery heat supply method for vehicle, vehicle, and storage medium

Abstract

The invention discloses a cooling system of a vehicle, a battery heat supply method of the vehicle, the vehicle and a storage medium. The method comprises the steps that a first cooling loop comprises a motor cooling system and a first radiator, the output end of the motor cooling system is connected with the input end of the first radiator, and the output end of the first radiator is connected with the input end of the motor cooling system; the second cooling loop comprises an engine, a second radiator and a warm air system, the first output end of the engine is connected with the input end of the second radiator, and the first input end of the engine is connected with the output end of the second radiator; the battery cooling system is connected with the warm air system, the input end of the battery cooling system is connected with the output end of the warm air system, and the output end of the battery cooling system is connected with the input end of the warm air system. The technical problem that the efficiency of a vehicle cooling system in the related technology is low is solved.

Description

Technical Field

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

[0002] While new energy vehicles are developing rapidly, they are also facing problems such as short driving range at low temperatures, insufficient utilization of engine waste heat, and complex cooling systems. The cooling system of existing new energy hybrid models mainly includes: engine, motor, battery cooling and warm air circuit, on which radiators, intercoolers, condensers and other cooling components are used for heat dissipation.

[0003] However, the above heat utilization methods still have defects: first, the engine thermostat opens when the heating demand in the passenger compartment is low and the water temperature is high, causing excess heat to be lost; second, the residual heat of the motor is not enough to maintain the battery temperature in a low temperature environment, affecting the endurance. In addition, as the number of cooling module layers increases, the wind resistance increases and the air intake decreases, which in turn leads to a low efficiency of the vehicle cooling system in the related technology.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] Embodiments of the present invention provide a vehicle cooling system, a vehicle battery heating method, a vehicle and a storage medium, so as to at least solve the technical problem of low efficiency of vehicle cooling systems in related technologies.

[0006] According to one aspect of an embodiment of the present invention, a cooling system for a vehicle is provided, comprising: a first cooling circuit, comprising a motor cooling system and a first radiator, wherein the output end of the motor cooling system is connected to the input end of the first radiator, the output end of the first radiator is connected to the input end of the motor cooling system, and the first radiator is used to dissipate heat from the motor cooling system; a second cooling circuit, comprising an engine, a second radiator, and a warm air system, wherein the first output end of the engine is connected to the input end of the second radiator, the first input end of the engine is connected to the output end of the second radiator, the output end of the warm air system is connected to the second input end of the engine, the first input end of the warm air system is connected to the second output end of the engine, the second radiator is used to dissipate heat from the engine, and the engine is used to provide heat for the warm air system; a battery cooling system, wherein the battery cooling system is connected to the warm air system, the input end of the battery cooling system is connected to the output end of the warm air system, the output end of the battery cooling system is connected to the input end of the warm air system, and the warm air system is used to provide heat for batteries in the battery cooling system.

[0007] Furthermore, the first cooling circuit also includes: an intercooling system, the output end of the intercooling system is connected to the input end of the first radiator, the input end of the intercooling system is connected to the output end of the first radiator, the first radiator is also used to dissipate heat for the intercooling system, and the intercooling system is used to reduce the intake temperature of the vehicle.

[0008] Furthermore, the cooling system of the vehicle also includes: an intermediate heat exchanger, a first input end of the intermediate heat exchanger is connected to an output end of the warm air system, a first output end of the intermediate heat exchanger is connected to an input end of the battery cooling system, a second input end of the intermediate heat exchanger is connected to an output end of the battery cooling system, and a second output end of the intermediate heat exchanger is connected to a second input end of the warm air system.

[0009] Furthermore, the second cooling circuit also includes: a multi-way valve, a first end of the multi-way valve is connected to the output end of the warm air system, a second end of the multi-way valve is connected to the second input end of the engine, a third end of the multi-way valve is connected to the second output end of the engine, a fourth end of the multi-way valve is connected to the input end of the warm air system, and a fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger; a controller is connected to the multi-way valve, and connects the input end of the warm air system to the second output end of the engine by connecting the third end of the multi-way valve and the fourth end of the multi-way valve; connects the output end of the warm air system to the first input end of the intermediate heat exchanger by connecting the first end of the multi-way valve and the fifth end of the multi-way valve; and connects the second output end of the engine to the first input end of the intermediate heat exchanger by connecting the third end of the multi-way valve and the fifth end of the multi-way valve.

[0010] Furthermore, the heating system also includes: a heating device for providing heat for the heating system; a controller connected to the heating device, for controlling the heating device to provide heat to the battery through an intermediate heat exchanger according to the target temperature of the battery in the vehicle, so that the battery reaches the target temperature.

[0011] According to another aspect of an embodiment of the present invention, a method for heating a battery of a vehicle is also provided, comprising: in response to receiving a battery heating command from the vehicle, obtaining a target temperature to be reached by the battery and a current temperature of the battery; controlling a warm air system in a cooling system to heat the battery according to the current temperature and the target temperature so that the battery reaches the target temperature, wherein the cooling system is the vehicle cooling system proposed in the present invention.

[0012] Furthermore, a warm air system in the cooling system is controlled to heat the battery according to the current temperature and the target temperature so that the battery reaches the target temperature, including: in response to the engine in the vehicle being not in operation, determining a heating temperature of a heating device in the warm air system based on the current temperature and the target temperature; and controlling the heating device to heat the battery based on the heating temperature so that the battery reaches the target temperature.

[0013] Furthermore, the heating temperature of the heating device in the warm air system is determined based on the current temperature and the target temperature, including: in response to the engine in the vehicle being in an operating state, obtaining the heating temperature of the engine, and determining the temperature difference between the current temperature and the target temperature; determining the heating temperature of the heating device based on the temperature difference and the difference between the heating temperature; controlling the heating device to heat the battery based on the heating temperature, and controlling the engine to heat the battery based on the heating temperature, so that the battery reaches the target temperature.

[0014] According to another aspect of an embodiment of the present invention, a vehicle is further provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, which includes a stored executable program, wherein when the executable program is running, the device where the storage medium is located is controlled to execute to implement the methods in various embodiments of the present invention.

[0016] In an embodiment of the present invention, a cooling system of a vehicle includes a first cooling circuit, a second cooling circuit and a battery cooling system, wherein the first cooling circuit includes a motor cooling system and a first radiator, the output end of the motor cooling system is connected to the input end of the first radiator, the output end of the first radiator is connected to the input end of the motor cooling system, and the first radiator is used to dissipate heat from the motor cooling system; the second cooling circuit includes an engine, a second radiator, and a warm air system, the first output end of the engine is connected to the input end of the second radiator, the first input end of the engine is connected to the output end of the second radiator, the output end of the warm air system is connected to the second input end of the engine, the first input end of the warm air system is connected to the second output end of the engine, the second radiator is used to dissipate heat from the engine, and the engine is used to provide heat for the warm air system; the battery cooling system is connected to the warm air system, the input end of the battery cooling system is connected to the output end of the warm air system, the output end of the battery cooling system is connected to the input end of the warm air system, and the warm air system is used to provide heat for the battery in the battery cooling system. It is easy to notice that the present application makes the motor cooling system and the battery cooling system independent by setting up two cooling circuits, so that the system can independently control the motor cooling system and the battery cooling system, respectively, and facilitate heat exchange between different circuits to achieve a variety of heat utilization modes. At the same time, the number of radiators is reduced, and the manufacturing cost of the cooling system is saved, thereby improving the cooling system performance, and further solving the technical problem of low efficiency of vehicle cooling system in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 is a schematic diagram of a cooling system of a vehicle according to an embodiment of the present invention;

[0019] Figure 2 is a structural diagram of an optional cooling system of a vehicle according to an embodiment of the present invention;

[0020] Figure 3 is a flow chart of a battery heating method for a vehicle according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a battery heating device for a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] According to an embodiment of the present invention, a cooling system for a vehicle is provided. Figure 1 is a schematic diagram of a cooling system of a vehicle according to an embodiment of the present invention, such as Figure 1 As shown, the cooling system of the vehicle includes:

[0025] The first cooling circuit 107 includes a motor cooling system 102 and a first radiator 101, wherein the output end of the motor cooling system is connected to the input end of the first radiator, and the output end of the first radiator is connected to the input end of the motor cooling system, and the first radiator is used to dissipate heat from the motor cooling system;

[0026] A second cooling circuit 108 includes an engine 104, a second radiator 103, and a heating system 105, wherein a first output end of the engine is connected to an input end of the second radiator, a first input end of the engine is connected to an output end of the second radiator, an output end of the heating system is connected to a second input end of the engine, a first input end of the heating system is connected to a second output end of the engine, the second radiator is used to dissipate heat from the engine, and the engine is used to provide heat for the heating system;

[0027] The battery cooling system 106 is connected to the heating system 105 , the input end of the battery cooling system is connected to the output end of the heating system, the output end of the battery cooling system is connected to the input end of the heating system, and the heating system is used to heat the batteries in the battery cooling system.

[0028] The above-mentioned first cooling circuit may refer to a cooling system including a motor cooling system and a first radiator, and its functions include but are not limited to dissipating the heat generated by the generator, maintaining the motor within a suitable operating temperature range, and ensuring stable operation of the motor.

[0029] The above-mentioned motor cooling system may refer to a system used to reduce the operating temperature of the vehicle motor, which can transfer heat from the inside of the motor to the external environment to avoid motor performance degradation or damage due to overheating. The functions of the motor cooling system include but are not limited to protecting motor components, maintaining motor performance, and saving energy. The motor cooling system includes but is not limited to air cooling system, liquid cooling system, and phase cooling system. The specific cooling method to be selected depends on the type of motor, the working environment, and the required cooling effect, which is not limited here.

[0030] The first radiator and the second radiator mentioned above may refer to heat exchange devices used to dissipate heat from a designated device, which can transfer the heat generated by the designated device to a coolant and then dissipate the heat to the surrounding air to reduce the operating temperature of the designated device and ensure that the device is within the optimal operating temperature range. Radiators include but are not limited to water-cooled radiators and air radiators, etc. The specific radiator type can be selected according to specific needs and application scenarios to achieve the best heat dissipation and equipment protection effect, which is not limited here.

[0031] In an optional embodiment, when the vehicle is in driving state, the motor assembly starts to work and continuously generates heat. The motor cooling system in the first cooling circuit can absorb the heat generated by the motor assembly through the coolant, and return the coolant that has absorbed the heat to the motor cooling system. At this time, the coolant in the motor cooling system is cooled by the first radiator, and finally the coolant after heat dissipation by the first radiator flows into the motor assembly again, forming a cycle, ensuring that the motor always operates at an appropriate temperature.

[0032] The above-mentioned second cooling circuit may refer to a cooling system including an engine, a second radiator and a heating system, whose functions include but are not limited to dissipating the heat generated by the engine, maintaining the engine within a suitable operating temperature range, ensuring stable operation of the engine, and inputting the heat generated by the engine into the heating system to provide heating for the driver.

[0033] The above-mentioned engine may refer to a device that converts a certain form of energy into the energy required by the vehicle, which can provide power for the vehicle and is the core of the entire vehicle power system. The types of engines include but are not limited to hybrid generators, gasoline engines, diesel engines and pure electric generators. The specific engine type can be determined based on factors such as fuel type, fuel mode, working cycle, etc., and is not limited here.

[0034] The above-mentioned heating system may refer to a device that provides warm air for the vehicle, and can output warm air in cold weather to keep the temperature inside the vehicle comfortable. The functions of the heating system include but are not limited to providing heating, assisting defrosting, and improving energy efficiency. The types of heating systems include but are not limited to liquid heaters, air heat exchangers, and positive temperature coefficient heaters. The specific type of heating system can be determined according to factors such as vehicle type and system environment, and is not limited here.

[0035] In an optional embodiment, the engine in the second cooling circuit runs continuously and generates heat continuously. At this time, the second radiator cools the engine through the coolant. The process first outputs the coolant from the output end of the second radiator to the first input end of the engine, and uses the coolant to cool the engine. Then, the coolant is output from the first output end of the engine to the input end of the second radiator, so that the coolant flows back to the second radiator, and the heat in the coolant is dissipated into the air through the cooling pipe inside the second radiator. Then, the cooled coolant flows back to the engine again, and the cycle continues. At the same time, when the coolant flowing out of the engine flows through the warm air system, part of the heat will be transferred to the air in the vehicle, thereby providing heating for the vehicle. The above process not only ensures that the engine is always at a suitable operating temperature, but also makes reasonable use of the heat generated by the engine, thereby improving the efficiency of heat utilization while avoiding waste of resources.

[0036] The above-mentioned battery cooling system may refer to a device used to maintain the battery temperature within a safe and effective working range. The battery generates heat during the charging and discharging process. Too high or too low temperatures will affect the performance and life of the battery. Therefore, the battery cooling system ensures that the battery operates in the best working condition by dissipating heat or heating. The functions of the battery cooling system include but are not limited to protecting the battery, improving battery performance, and extending the vehicle's cruising range. The types of battery cooling systems include but are not limited to air cooling systems, liquid cooling systems, phase change material cooling, and heat pipe cooling systems. The specific type of battery cooling system can be determined based on factors such as vehicle type, vehicle structure, and system environment, and is not limited here.

[0037] In an optional embodiment, the cooling system of the vehicle includes a first cooling circuit, a second cooling circuit and a battery cooling system, wherein the first cooling circuit includes a motor cooling system and a first radiator, the output end of the motor cooling system is connected to the input end of the first radiator, the output end of the first radiator is connected to the input end of the motor cooling system, and the first radiator is used to dissipate heat from the motor cooling system; the second cooling circuit includes an engine, a second radiator, and a warm air system, the first output end of the engine is connected to the input end of the second radiator, the first input end of the engine is connected to the output end of the second radiator, the output end of the warm air system is connected to the second input end of the engine, the first input end of the warm air system is connected to the second output end of the engine, the second radiator is used to dissipate heat from the engine, and the engine is used to provide heat for the warm air system; the battery cooling system is connected to the warm air system, the input end of the battery cooling system is connected to the output end of the warm air system, the output end of the battery cooling system is connected to the input end of the warm air system, and the warm air system is used to provide heat for the batteries in the battery cooling system. It is easy to notice that the present application makes the motor cooling system and the battery cooling system independent by setting up two cooling circuits, so that the system can independently control the motor cooling system and the battery cooling system, respectively, and facilitate heat exchange between different circuits to achieve a variety of heat utilization modes. At the same time, the number of radiators is reduced, and the manufacturing cost of the cooling system is saved, thereby improving the cooling system performance, and further solving the technical problem of low efficiency of vehicle cooling system in related technologies.

[0038] Optionally, the first cooling circuit also includes: an intercooling system, the output end of the intercooling system is connected to the input end of the first radiator, the input end of the intercooling system is connected to the output end of the first radiator, the first radiator is also used to dissipate heat for the intercooling system, and the intercooling system is used to reduce the intake temperature of the vehicle.

[0039] The above-mentioned intercooling system may refer to a device used in a thermal system, which can cool high-temperature gas or steam by using a lower temperature medium (such as water, air or other liquids), thereby reducing its temperature and improving the efficiency and safety of the entire system. The types of intercooling systems may include but are not limited to direct contact intercooling systems, indirect contact intercooling systems and hybrid intercooling systems. The functions of the intercooling system include but are not limited to improving system efficiency, controlling temperature, protecting equipment, and reducing corrosion and scaling. The selection of a specific intercooling system can be determined according to different working conditions and requirements, and is not limited here.

[0040] In an optional embodiment, the first cooling circuit of the vehicle includes a first radiator, a motor cooling system and an intercooling system, wherein the motor cooling system and the intercooling system are combined and the first radiator is used for heat dissipation. The motor cooling system and the intercooling system are cooled by coolant, and then the coolant is input into the first radiator. The first radiator replaces the heat in the coolant by air, diffuses the heat into the air, and then the treated coolant flows back to the motor cooling system and the intercooling system again, and the cycle continues. The above process reduces the number of front-end cooling module layers while achieving heat replacement, and controls the series-parallel mode of the intercooling and motor circuits through the thermal management control module, thereby optimizing the driving smoothness of the motor at low temperatures.

[0041] Optionally, the cooling system of the vehicle also includes: an intermediate heat exchanger, a first input end of the intermediate heat exchanger is connected to an output end of the warm air system, a first output end of the intermediate heat exchanger is connected to an input end of the battery cooling system, a second input end of the intermediate heat exchanger is connected to an output end of the battery cooling system, and a second output end of the intermediate heat exchanger is connected to a second input end of the warm air system.

[0042] The above-mentioned intermediate heat exchanger may refer to a heat exchanger used to transfer heat from one medium to another during the flow of gas or liquid. In the vehicle cooling system, the intermediate heat exchanger is usually used to reduce the high temperature air generated by the turbocharger to improve the combustion efficiency of the engine. The types of intermediate heat exchangers may include but are not limited to air-to-air heat exchangers, air-to-water heat exchangers, and air-to-oil heat exchangers. The specific selection of the intermediate heat exchanger can be determined based on the type of medium to be cooled and the type of vehicle, and is not limited here.

[0043] Optionally, the second cooling circuit also includes: a multi-way valve, a first end of the multi-way valve is connected to the output end of the warm air system, a second end of the multi-way valve is connected to the second input end of the engine, a third end of the multi-way valve is connected to the second output end of the engine, a fourth end of the multi-way valve is connected to the input end of the warm air system, and a fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger; a controller is connected to the multi-way valve, and connects the input end of the warm air system to the second output end of the engine by connecting the third end of the multi-way valve and the fourth end of the multi-way valve; connects the output end of the warm air system to the first input end of the intermediate heat exchanger by connecting the first end of the multi-way valve and the fifth end of the multi-way valve; and connects the second output end of the engine to the first input end of the intermediate heat exchanger by connecting the third end of the multi-way valve and the fifth end of the multi-way valve.

[0044] The multi-way valve mentioned above may refer to a valve with multiple channels, which can control the flow direction of the fluid as needed, and is usually composed of a valve body, a valve core, a seal, a drive device, etc. In the second cooling circuit, the functions of the multi-way valve include but are not limited to controlling the flow direction and flow rate of the coolant, controlling the connectivity between internal components in the cooling circuit, and protecting the equipment, etc. The types of multi-way valves may include but are not limited to manual multi-way valves, electric multi-way valves, pneumatic multi-way valves, and electromagnetic multi-way valves, etc. The specific selection can be made according to the application scenario and actual needs, and is not limited here.

[0045] The conduction modes of the multi-way valve may include but are not limited to the following:

[0046] In the first case, the heating system is turned on and the engine has surplus heat. At this time, the third end of the multi-way valve is connected to the second output end of the engine to receive the surplus heat provided by the engine to the heating system to avoid heat waste.

[0047] In the second case, the battery cooling system needs to be heated. First, the second output end of the engine is connected to the third end of the multi-way valve, and the fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger. The heat of the engine is transferred to the battery cooling system through the multi-way valve and the intermediate heat exchanger to heat the battery. If the temperature reaches the target temperature of the battery, there is no need to open other heating paths.

[0048] In the third case, the battery cooling system needs to be heated. First, the second output end of the engine is connected to the third end of the multi-way valve, and the fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger. The heat of the engine is transferred to the battery cooling system through the multi-way valve and the intermediate heat exchanger to heat the battery. If the temperature does not reach the target temperature of the battery, the output end of the warm air system needs to be connected to the first end of the multi-way valve so that the heat of the warm air system can also be transferred to the battery cooling system through the multi-way valve and the intermediate heat exchanger. The engine and the warm air system jointly provide heat to the battery cooling system to make the battery reach the target temperature.

[0049] In an optional embodiment, the second cooling circuit includes a second radiator, an engine, a multi-way valve, a heating device, and an intermediate heat exchange device is added to the heating system and the battery cooling system. During the driving of the vehicle, the engine continues to run and continuously generates heat, a part of which is dissipated through the second radiator to maintain the normal operating temperature of the engine, and the other part of the heat is divided into two paths through the multi-way valve, one of which is input into the heating system to provide heating for the cockpit and provide a comfortable riding environment for passengers and drivers, and the other is transmitted to the intermediate heat exchanger by the multi-way valve according to the needs of the battery cooling system, and then input into the battery cooling system by the intermediate heat exchanger to ensure that the battery is at a suitable working temperature and improve the battery's endurance. The above process not only realizes the heat utilization mode from the engine to the heating system, but also realizes the heat utilization mode from the engine to the heating system to the battery, and through the control of the thermal management strategy, it can realize automatic adjustment of energy distribution according to user needs. In the case of insufficient engine residual heat or pure electric, the heating device can also provide heat sources for the battery and the heating at the same time to ensure comfort and power at low temperatures.

[0050] Optionally, the heating system also includes: a heating device for providing heat for the heating system; a controller connected to the heating device, for controlling the heating device to provide heat to the battery through an intermediate heat exchanger according to the target temperature of the battery in the vehicle, so that the battery reaches the target temperature.

[0051] The above-mentioned heating device may refer to an independent air heating device located in the warm air system, which transfers heat to the air by heating, thereby increasing the temperature of the warm air system, and then the warm air system transfers the heat to the cockpit or battery and other equipment that needs to be heated, providing a comfortable driving environment for the driver and passengers and maintaining the normal operating temperature of other equipment. The functions of the heating device include but are not limited to reducing the humidity of the vehicle, ensuring the appropriate temperature of the internal structure, and improving the comfort of the passengers. The types of heating devices may include but are not limited to water-heating heaters, electric heaters, gas-heating heaters, and hybrid heaters. The specific selection can be made according to the medium type and actual needs, and is not limited here.

[0052] The above-mentioned controller may refer to a device for controlling the operating state of the heating device, which can accurately control the operating state of the heating device according to preset parameters such as the target temperature of the battery in the vehicle, so that the heating device provides heat to the battery and reaches the target temperature of the battery.

[0053] The control method of the heating device by the above controller may include but is not limited to the following two situations:

[0054] In the first case, after the heating system is turned on, the temperature provided by the engine to the heating system does not reach the preset temperature, and it is necessary to turn on the heating device through the controller for heating in order to increase the temperature of the heating system; if the temperature provided by the engine to the heating system reaches the preset temperature, there is no need to turn on the heating device through the controller, thereby saving energy.

[0055] In the second case, the heater system is turned on or not, and the battery cooling system has not reached the target temperature. It is necessary to turn on the heating device separately to heat up the heater system, and then the heater system transfers the heat to the battery cooling system, thereby heating the battery cooling system to reach the target temperature.

[0056] In an optional embodiment, Figure 2 It is a structural diagram of an optional vehicle cooling system according to an embodiment of the present invention, wherein 107 represents a first cooling circuit, wherein 201 is an intercooling system, 101 is a first radiator, and 102 is a motor cooling system; 108 represents a second cooling circuit, wherein 103 is a second radiator, 104 is an engine, 202 is a multi-way valve, and 105 is a warm air system; 106 represents a battery cooling system, and 203 represents an intermediate heat exchange device.

[0057] The first cooling circuit includes a first radiator, a motor cooling system and an intercooling system, wherein the motor cooling system 102 and the intercooling system 201 are combined in the first cooling system 107, and the first radiator 101 is used for heat dissipation. The motor cooling system and the intercooling system are cooled by coolant, and then the coolant is input into the first radiator. The first radiator replaces the heat in the coolant by air, diffuses the heat into the air, and then the treated coolant is returned to the motor cooling system and the intercooling system again, and the cycle is continuous. While achieving heat replacement, the motor cooling system and the intercooling system share a first radiator, which reduces the number of radiators, reduces wind resistance and thus reduces heat dissipation costs. The second cooling circuit 108 includes a second radiator 103, an engine 104, a multi-way valve 202, a heating device 105, and an intermediate heat exchange device 103 is added to the heating system 105 and the battery cooling system 106.

[0058] During the driving process of the vehicle, the engine continues to run and continuously generates heat, of which part of the heat is dissipated through the second radiator to maintain the normal operating temperature of the engine, and the other part of the heat is divided into two paths through the multi-way valve, one of which is input into the heating system to provide heating for the cockpit and provide a comfortable riding environment for passengers and drivers, and the other is transmitted to the intermediate heat exchanger by the multi-way valve according to the needs of the battery cooling system, and then input into the battery cooling system by the intermediate heat exchanger to ensure that the battery is at a suitable working temperature and improve the battery's endurance. The vehicle's heating system 105 includes a heating device and a controller. The heating system can not only exchange heat with the engine to keep the engine at the optimal working temperature, but also control the heating device to start through a remote application (Application, referred to as APP) when the vehicle is stationary and the heat is insufficient, to provide heat for the heating system, and then the heating system transmits the heat to the battery system through the intermediate heat exchanger to heat the battery in advance, to ensure that the battery has reached the optimal operating temperature when the vehicle is in use, thereby improving the endurance mileage.

[0059] According to another aspect of an embodiment of the present invention, a method for heating a battery of a vehicle 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 may be executed in a different order than that shown here.

[0060] Figure 3 is a flow chart of a battery heating method for a vehicle according to an embodiment of the present invention. Figure 3 As shown, the method comprises the following steps:

[0061] Step S302, in response to receiving a battery heating instruction from the vehicle, obtaining a target temperature to be reached by the battery and a current temperature of the battery;

[0062] The above-mentioned target temperature may refer to the optimal temperature when the battery is in normal working condition. The operating temperature of the battery can be obtained under normal driving condition of the vehicle or calculated based on various parameters of the battery, and then set as the target temperature as a criterion for judging the current temperature of the battery.

[0063] The above current temperature may refer to the instantaneous temperature of the battery at the moment when the battery heating instruction is received.

[0064] The battery heating instruction is an instruction for heating the battery. The generation method of the battery heating instruction includes but is not limited to: the user selects the heating temperature of the battery to generate a heating instruction through the interactive interface; when the battery does not reach the standard temperature, the battery temperature sensing device automatically generates a heating instruction; and the environmental monitoring device detects that the external environment temperature is too low, and then predicts that the battery temperature is low, and automatically generates a heating instruction through the controller.

[0065] The above-mentioned vehicle types may include but are not limited to internal combustion engine vehicles, electric vehicles, plug-in hybrid vehicles, solar vehicles and fuel cell vehicles, and the vehicle status includes but is not limited to parking status, idling status, emergency braking status, driving status, energy-saving status, automatic driving status and cruise control status, etc.

[0066] The above-mentioned battery can be a power battery for the vehicle, and its functions include but are not limited to providing power for the vehicle, recovering energy, and providing power for other auxiliary systems such as vehicle navigation, lighting, air conditioning, etc. The type of battery may include but is not limited to lead-acid batteries, nickel-cadmium batteries, lithium-ion batteries, lithium polymer batteries and nickel-metal hydride batteries.

[0067] In an optional embodiment, the driver turns on the battery heating instruction through the remote APP, and at this time, it is necessary to obtain the target temperature and current temperature of the battery. The remote APP may include multiple driving modes, such as off-road mode, commuting mode, etc. Different driving modes correspond to different battery target temperatures. The specific target temperature can be selected through the corresponding heating instructions. Therefore, when the battery heating instruction is received, the battery target temperature after the driving mode selection is obtained, and the instantaneous temperature of the battery at the current moment is collected. In the above process, the selection of the vehicle driving mode is completed through the remote operation of the APP. At the same time, the vehicle battery target temperature is obtained according to the corresponding heating instruction selected according to the driving mode, and the current temperature of the battery is obtained to provide a basis for the subsequent heating system.

[0068] Step S304, controlling a warm air system in a cooling system to heat the battery according to the current temperature and the target temperature, so that the battery reaches the target temperature, wherein the cooling system is the vehicle cooling system proposed in the above embodiment.

[0069] In an optional embodiment, after obtaining the current temperature of the vehicle battery, it is determined whether the current temperature reaches the target temperature of the battery. If the target temperature of the battery is not reached, it means that the battery needs to be heated again. The heater system in the vehicle cooling system can be controlled to transfer heat to the battery to heat the battery so that the battery reaches the target temperature, thereby allowing the battery to reach a suitable working state.

[0070] Optionally, a warm air system in the cooling system is controlled to heat the battery according to the current temperature and the target temperature so that the battery reaches the target temperature, including: in response to the engine in the vehicle being not in operation, determining a heating temperature of a heating device in the warm air system based on the current temperature and the target temperature; and controlling the heating device to heat the battery based on the heating temperature so that the battery reaches the target temperature.

[0071] The heating temperature may refer to the difference between the current temperature of the battery and the target temperature when the engine is not in operation.

[0072] In an optional embodiment, the engine is not in working state, the battery temperature is lower than the target temperature, and a heating instruction is generated to heat the battery. First, after receiving the heating instruction, the target temperature and the current temperature of the battery are obtained, and then the heating temperature of the heating device in the warm air system is determined based on the current temperature and the target temperature, and the heating device is controlled to supply heat to the warm air system based on the heating temperature. Then, the output end of the warm air system is connected to the first end of the multi-way valve, and the fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger, so that the heat generated by the heating device is input into the intermediate heat exchanger through the output end of the warm air system, the first end of the multi-way valve, and the fifth end of the multi-way valve, and finally transmitted to the battery cooling system by the intermediate heat exchanger, completing the continuous heating of the battery, so that the battery reaches the target temperature, and ensuring that the battery is at a suitable operating temperature when the vehicle is used. It can not only effectively protect the battery and extend its service life, but also improve the battery's cruising range, realize rapid warm-up of the vehicle in a low temperature environment, reduce heat loss, and thus improve the working efficiency of the battery.

[0073] Optionally, the heating temperature of the heating device in the warm air system is determined based on the current temperature and the target temperature, including: in response to the engine in the vehicle being in an operating state, obtaining the heating temperature of the engine, and determining the temperature difference between the current temperature and the target temperature; determining the heating temperature of the heating device based on the temperature difference and the difference between the heating temperature; controlling the heating device to heat the battery based on the heating temperature, and controlling the engine to heat the battery based on the heating temperature, so that the battery reaches the target temperature.

[0074] The above heating temperature may refer to the temperature of the engine when the engine is in working state.

[0075] The heating temperature may refer to the difference between the current temperature of the battery and the target temperature and the heating temperature of the engine when the engine is in operation.

[0076] In an optional embodiment, when the engine is in working state, the current temperature and target temperature of the battery are obtained, the temperature difference between the two is obtained, and then the heating temperature of the engine is obtained, and the heating temperature is determined based on the temperature difference and the heating temperature, and then the heating device is controlled to heat the battery according to the required heating temperature. At this time, it is necessary to connect the output end of the warm air system with the first end of the multi-way valve, and the fifth end of the multi-way valve with the first input end of the intermediate heat exchanger, so that the heat generated by the heating device is transmitted to the battery through the multi-way valve and the intermediate heat exchanger. This process ensures the supply of system heat through an independent heating device, and can quickly increase the battery temperature; at the same time, the engine is controlled to heat the battery based on the heating temperature. At this time, it is necessary to ensure that the second output end of the engine is connected to the third end of the multi-way valve, and the fifth end of the multi-way valve is connected to the first input end of the intermediate heat exchanger, so that the heat generated by the engine is transmitted to the battery through the multi-way valve and the intermediate heat exchanger. This process realizes the comprehensive utilization of engine heat and improves heat utilization efficiency. The above process introduces multiple conditions such as engine temperature, battery temperature and other ambient temperatures as well as the heating system environment according to the vehicle conditions in different states, comprehensively confirms the heat distribution logic, further refines the heating heat demand level and battery heat demand level, and realizes reasonable heat distribution in different states.

[0077] According to another aspect of an embodiment of the present invention, a battery heating device for a vehicle is also provided. The device can execute the battery heating method for a vehicle of the above embodiment. The specific implementation method and preferred application scenario are the same as those of the above embodiment and will not be described in detail here.

[0078] Figure 4 is a schematic diagram of a battery heating device for a vehicle according to an embodiment of the present invention. Figure 4 As shown, the device includes the following: an acquisition module 402 and a heating module 404.

[0079] The acquisition module 402 acquires a target temperature to be reached by the battery and a current temperature of the battery in response to receiving a battery heating instruction of the vehicle;

[0080] The heating module 404 controls the heating system in the cooling system to heat the battery according to the current temperature and the target temperature, so that the battery reaches the target temperature, wherein the cooling system is the vehicle cooling system proposed in the present invention.

[0081] Optionally, the heating module includes: a first heating unit, used to determine the heating temperature of the heating device in the warm air system based on the current temperature and the target temperature in response to the engine in the vehicle not being in working state; and control the heating device to heat the battery based on the heating temperature so that the battery reaches the target temperature.

[0082] Optionally, the heating module includes: a second heating unit, used to respond to the engine in the vehicle being in an operating state, obtain the heating temperature of the engine, and determine the temperature difference between the current temperature and the target temperature; determine the heating temperature of the heating device based on the temperature difference and the difference between the heating temperature; control the heating device to heat the battery based on the heating temperature, and control the engine to heat the battery based on the heating temperature, so that the battery reaches the target temperature.

[0083] According to another aspect of an embodiment of the present invention, a vehicle is further provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0084] 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 program. When the program is executed, a processor of a device is controlled to execute the methods of various embodiments of the present invention.

[0085] The computer storage medium in the above steps can be a medium used to store certain discontinuous physical quantities in a computer memory, and the computer storage medium mainly includes semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc. The stored program included in the computer-readable storage medium can be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0086] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0087] 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.

[0088] 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 the 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.

[0089] 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 on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0090] 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.

[0091] 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, a server or a network device, etc.) to perform all or part of the steps of the method described in 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, magnetic disk or optical disk and other media that can store program codes.

[0092] The above is only a preferred embodiment 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cooling system for a vehicle, characterized in that: include: a first cooling circuit, comprising a motor cooling system and a first radiator, wherein an output end of the motor cooling system is connected to an input end of the first radiator, an output end of the first radiator is connected to an input end of the motor cooling system, and the first radiator is used to dissipate heat from the motor cooling system; A second cooling circuit comprises an engine, a second radiator, and a heating system, wherein a first output end of the engine is connected to an input end of the second radiator, a first input end of the engine is connected to an output end of the second radiator, an output end of the heating system is connected to a second input end of the engine, a first input end of the heating system is connected to a second output end of the engine, the second radiator is used to dissipate heat from the engine, and the engine is used to provide heat for the heating system; A battery cooling system, wherein the battery cooling system is connected to the heating system, the input end of the battery cooling system is connected to the output end of the heating system, the output end of the battery cooling system is connected to the input end of the heating system, and the heating system is used to provide heat for the batteries in the battery cooling system.

2. The cooling system according to claim 1, characterized in that: The first cooling circuit also includes: An intercooling system, wherein the output end of the intercooling system is connected to the input end of the first radiator, the input end of the intercooling system is connected to the output end of the first radiator, the first radiator is also used to dissipate heat for the intercooling system, and the intercooling system is used to reduce the intake temperature of the vehicle.

3. The cooling system according to claim 1, characterized in that: The cooling system of the vehicle further comprises: An intermediate heat exchanger, wherein a first input end of the intermediate heat exchanger is connected to an output end of the heating system, a first output end of the intermediate heat exchanger is connected to an input end of the battery cooling system, a second input end of the intermediate heat exchanger is connected to an output end of the battery cooling system, and a second output end of the intermediate heat exchanger is connected to a second input end of the heating system.

4. The cooling system according to claim 3, characterized in that: The second cooling circuit also includes: a multi-way valve, wherein a first end of the multi-way valve is connected to an output end of the heating system, a second end of the multi-way valve is connected to a second input end of the engine, a third end of the multi-way valve is connected to a second output end of the engine, a fourth end of the multi-way valve is connected to an input end of the heating system, and a fifth end of the multi-way valve is connected to a first input end of the intermediate heat exchanger; A controller is connected to the multi-way valve, and connects the input end of the warm air system with the second output end of the engine by connecting the third end of the multi-way valve with the fourth end of the multi-way valve; connects the output end of the warm air system with the first input end of the intermediate heat exchanger by connecting the first end of the multi-way valve with the fifth end of the multi-way valve; and connects the second output end of the engine with the first input end of the intermediate heat exchanger by connecting the third end of the multi-way valve with the fifth end of the multi-way valve.

5. The cooling system according to claim 3, characterized in that: The heating system further comprises: A heating device, used to provide heat for the warm air system; A controller is connected to the heating device and is used to control the heating device to provide heat to the battery through the intermediate heat exchanger according to the target temperature of the battery in the vehicle, so that the battery reaches the target temperature.

6. A method for heating a battery of a vehicle, characterized in that: include: In response to receiving a battery heating instruction from a vehicle, acquiring a target temperature to be reached by the battery and a current temperature of the battery; A heating system in a cooling system is controlled to heat the battery according to the current temperature and the target temperature so that the battery reaches the target temperature, wherein the cooling system is a cooling system of a vehicle according to any one of claims 1 to 4.

7. The vehicle battery heating method according to claim 6, characterized in that: Controlling a warm air system in a cooling system to heat the battery according to the current temperature and the target temperature so that the battery reaches the target temperature includes: In response to an engine in the vehicle not being in operation, determining a heating temperature of a heating device in the warm air system based on the current temperature and the target temperature; The heating device is controlled to heat the battery based on the heating temperature so that the battery reaches the target temperature.

8. The battery heating method for a vehicle according to claim 6, characterized in that: Determining a heating temperature of a heating device in the warm air system based on the current temperature and the target temperature includes: In response to an engine in the vehicle being in an operating state, obtaining a heating temperature of the engine, and determining a temperature difference between the current temperature and the target temperature; determining a heating temperature of the heating device based on a difference between the temperature difference and the heating temperature; The heating device is controlled to heat the battery based on the heating temperature, and the engine is controlled to heat the battery based on the heating temperature so that the battery reaches the target temperature.

9. A vehicle, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 6 to 8 when running.

10. 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 6 to 8.

Images