Control method, device and equipment of vehicle-mounted charger cooling system and medium

Abstract

The invention discloses a control method and device of a vehicle-mounted charger cooling system, equipment and a medium, and belongs to the technical field of vehicles. The method comprises the following steps: acquiring a vehicle driving destination; if the destination is the charging station, the engine state and the average speed of the vehicle, the environment temperature and the arrival time when the vehicle runs to the charging station are obtained, and the engine state comprises the starting state and the closing state; if the engine state is a starting state, a target moment is determined according to the environment temperature, the average vehicle speed and the arrival moment, and the target moment is earlier than the arrival moment; and controlling the cooling system to operate at a preset target heat dissipating capacity at the target moment so as to reduce the temperature of the cooling liquid in the cooling system. According to the method, the temperature of the cooling liquid can be reduced in advance, so that the temperature of the cooling liquid can be relatively low during charging, the vehicle-mounted charger can be better cooled, the situation of charging gun jumping is reduced, and normal charging of the battery pack is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a control method and device of a vehicle-mounted charger cooling system, equipment and a medium. BACKGROUND

[0002] In a hybrid vehicle, if the battery pack is insufficient, the battery pack can be charged by a charging pile and a vehicle-mounted charger. When the battery pack is charging, if the charging current is large, the temperature of the vehicle-mounted charger will be too high. Once the temperature exceeds the temperature threshold, the charging will be disconnected, that is, the charging gun will jump.

[0003] In the prior art, when the battery pack is charging, the vehicle-mounted charger is cooled by the vehicle-mounted charger cooling system, so that the temperature of the vehicle-mounted charger does not exceed the temperature threshold, and the battery pack can be normally charged.

[0004] However, if the temperature of the vehicle cabin is particularly high during the charging of the battery pack, even if the cooling system is started, the temperature of the cooling liquid of the cooling system will also rise greatly, resulting in poor cooling effect of the vehicle-mounted charger, causing the temperature of the vehicle-mounted charger to be too high, thereby causing the charging gun to jump and affecting normal charging. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide a control method, device, equipment and medium of a vehicle-mounted charger cooling system to solve the above problems. If the vehicle is ready to charge and the engine is started during the journey to the charging station, the cooling system is controlled to operate at a target heat dissipation amount before the vehicle arrives at the charging station, so as to reduce the temperature of the cooling liquid in advance, so that the temperature of the cooling liquid can be lower during charging, which can better cool the vehicle-mounted charger, reduce the occurrence of charging gun jumping, and ensure that the battery pack can be normally charged.

[0006] In a first aspect, the present application provides a control method of a vehicle-mounted charger cooling system, the method comprising: obtaining a destination of vehicle travel; if the destination is a charging station, obtaining an engine state and an average vehicle speed of the vehicle, and an environmental temperature and an arrival time of the vehicle traveling to the charging station, the engine state comprising a starting state and a shutdown state; if the engine state is the starting state, determining a target time according to the environmental temperature, the average vehicle speed and the arrival time, the target time being earlier than the arrival time; controlling the cooling system to operate at a preset target heat dissipation amount at the target time to reduce the temperature of the cooling liquid in the cooling system.

[0007] Optionally, the target time is determined according to the environmental temperature, the average vehicle speed and the arrival time, comprising: calculating a difference between the current time and the arrival time, to obtain a first time length; determining the target time according to the ambient temperature, the average vehicle speed and the first time length.

[0008] Optionally, the determining the target time according to the ambient temperature, the average vehicle speed and the first time length comprises: determining a second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature and the average vehicle speed; determining the target time according to the first time length and the second time length.

[0009] Optionally, the determining the target time according to the first time length and the second time length comprises: if the first time length is less than or equal to the second time length, determining the current time as the target time; if the first time length is greater than the second time length, calculating a difference between the first time length and the second time length to obtain a third time length, and determining a time obtained by adding the third time length to the current time as the target time.

[0010] Optionally, the determining a second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature and the average vehicle speed comprises: determining the second time length required for cooling the coolant from the preset warning temperature to the preset target temperature according to the ambient temperature, the average vehicle speed and a preset target correspondence relationship; wherein the target correspondence relationship is a correspondence relationship between the ambient temperature, the average vehicle speed, the warning temperature, the target temperature and the second time length.

[0011] Optionally, after the determining the target time, the method further comprises: before the time reaches the target time, if an actual temperature of the coolant is greater than the warning temperature, controlling the cooling system to operate at a preset energy-saving heat dissipation amount to reduce the actual temperature to the warning temperature; wherein the energy-saving heat dissipation amount is less than the target heat dissipation amount.

[0012] Optionally, the target temperature is greater than the ambient temperature.

[0013] In a second aspect, the present application provides a control device of a vehicle-mounted charger cooling system, the device comprising: a first obtaining module configured to obtain a destination of vehicle travel; The second obtaining module is configured to, if the destination is a charging station, obtain an engine state and an average vehicle speed of the vehicle, and an ambient temperature and an arrival time when the vehicle travels to the charging station, the engine state including a start state and a stop state; The determining module is configured to, if the engine state is the start state, determine a target time according to the ambient temperature, the average vehicle speed and the arrival time, the target time being earlier than the arrival time. The cooling module is configured to control the cooling system to operate at a preset target heat dissipation amount at the target time to reduce the temperature of the cooling liquid in the cooling system.

[0014] In a third aspect, the present application provides an electronic device, comprising a memory and a processor, which are in communication connection with each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the method of the first aspect.

[0015] In a fourth aspect, the present application provides a computer readable storage medium, which stores computer instructions for causing the computer to execute the method of the first aspect.

[0016] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: The control method, device, equipment and medium for the cooling system of the on-board charger provided by the embodiments of the present application can obtain the destination of the vehicle travel and understand the driving direction of the user; if the destination is a charging station, the engine state and the average vehicle speed of the vehicle are obtained, as well as the ambient temperature and the arrival time when the vehicle travels to the charging station, so as to understand the parameters affecting the cooling capacity of the cooling system when the user wants to charge; if the engine state is the start state, the target time is determined according to the ambient temperature, the average vehicle speed and the arrival time, so as to determine when to reduce the temperature of the cooling liquid in advance according to the parameters affecting the cooling capacity of the cooling system in the case that the temperature of the cabin may rapidly rise, wherein the target time is earlier than the arrival time; the cooling system is controlled to operate at a preset target heat dissipation amount at the target time to reduce the temperature of the cooling liquid in the cooling system, so that the temperature of the cooling liquid is lower when the vehicle arrives at the charging station. The temperature of the cooling liquid is reduced in advance before charging, so that the temperature of the cooling liquid can be lower during charging, the on-board charger can be better cooled, the situation of charging jump is reduced, and the battery pack can be normally charged.

[0017] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit the present application. Furthermore, the same reference numerals in different drawings represent the same elements. In the drawings: Figure 1 is a flow chart of a control method of a cooling system of a vehicle-mounted charger according to an embodiment of the present application; Figure 2 is a structural block diagram of a control device of a cooling system of a vehicle-mounted charger according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] For the purpose of making the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings, and it should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, but are not limitations of the technical solutions of the present application, and the technical features in the embodiments of the present application and the embodiments can be combined with each other without conflict.

[0020] Figure 1 is a flow chart of a control method of a cooling system of a vehicle-mounted charger according to an embodiment of the present application, as shown in Figure 1 the method comprises the following steps: Step S110, obtaining a destination of vehicle travel.

[0021] In the embodiments of the present application, the destination of vehicle travel reflects the driving intention of the driver. The destination can be obtained from vehicle-mounted navigation software, or the destination that the driver is likely to go to can be determined according to historical driving data of the driver, for example, the historical driving data indicates that the driver goes to a fixed place for charging at a fixed time every Friday morning, and the fixed place is the destination.

[0022] Step S120, if the destination is a charging station, obtaining an engine state and an average vehicle speed of the vehicle, and an environmental temperature and an arrival time of the vehicle travel to the charging station.

[0023] The engine state includes a starting state and a closing state.

[0024] In the embodiment of the present application, if the destination is a charging station, it indicates that the driving intention of the driver is to go to charge, at this time, the engine state and the average vehicle speed of the vehicle, and the environmental temperature and the arrival time of the vehicle to the charging station are obtained. The engine state reflects whether the engine is started. After the engine is started, the cabin temperature will rise rapidly. The cabin temperature after rising will drive the coolant temperature to rise. Similarly, the environmental temperature will also affect the coolant temperature, and the average speed will affect the cooling capacity of the cooling system.

[0025] Among them, the vehicle can be a hybrid vehicle, and the hybrid vehicle is configured with an engine. When the battery pack has a low power, the engine is started to charge the battery pack through the engine. After the engine is started for a certain period of time, the cabin temperature is easy to rise very high, and the very high cabin temperature will affect the temperature of the coolant. If the vehicle is not a hybrid vehicle, the engine state is recorded as a closed state.

[0026] Step S130, if the engine state is a start state, the target time is determined according to the environmental temperature, the average speed and the arrival time. The target time is earlier than the arrival time.

[0027] In the embodiment of the present application, if the engine state is a start state, it indicates that the cabin temperature will rise rapidly. The higher cabin temperature will make the coolant temperature become higher. In this case, the target time earlier than the arrival time is determined according to the environmental temperature, the average speed and the arrival time. The temperature of the coolant is reduced from the target time, so that the temperature of the coolant can be reduced when the vehicle arrives at the charging station, and the vehicle-mounted charger can be cooled better when charging, the situation of charging jump gun is reduced, and the battery pack can be normally charged.

[0028] Step S140, the cooling system is controlled to operate at a preset target heat dissipation amount at the target time to reduce the temperature of the coolant.

[0029] In the embodiment of the present application, in order to prevent the cabin temperature from rising the temperature of the coolant to a higher temperature, the cooling system is controlled to operate at a preset target heat dissipation amount at the target time before the vehicle arrives at the charging station, so that the temperature of the coolant is reduced in advance, and the vehicle-mounted charger can be better cooled when charging, the situation of charging jump gun is reduced, and the battery pack can be normally charged.

[0030] In the embodiment of the present application, the water pump and the radiator of the cooling system can be controlled to operate at a target speed corresponding to the target heat dissipation amount at the target time, so that the cooling system reaches the target heat dissipation amount.

[0031] It can be understood that the factors affecting the heat dissipation amount of the cooling system include the speed of the water pump and the speed of the radiator. Therefore, in order to make the cooling system reach the target heat dissipation amount, the speed of the water pump and the radiator can be adjusted to the corresponding target speed. The target speed includes the first target speed of the water pump and the second target speed of the radiator.

[0032] Wherein, the target heat dissipation amount can be the maximum heat dissipation amount of the cooling system, and the target rotating speed of the water pump and the radiator corresponds to the maximum rotating speed, which can reduce the temperature of the cooling liquid faster.

[0033] Optionally, the step S130 comprises: Step S1301, calculating the difference between the current time and the arrival time to obtain a first time length.

[0034] In the embodiment of the present application, the first time length reflects the time length required for the vehicle to travel to the charging station.

[0035] Step S1302, determining a target time according to the ambient temperature, the average speed and the first time length.

[0036] In the embodiment of the present application, the ambient temperature and the average speed are parameters that affect the speed of reducing the temperature of the cooling liquid, and the first time length is the longest time available for reducing the temperature of the cooling liquid in advance. According to these parameters, the target time can be determined, that is, the time when the temperature of the cooling liquid starts to be reduced.

[0037] Optionally, the step S1302 comprises: First, according to the ambient temperature and the average speed, a second time length required for cooling the cooling liquid from a preset warning temperature to a preset target temperature is determined.

[0038] It can be understood that the second time length required for cooling the cooling liquid from the warning temperature to the target temperature is predicted under the ambient temperature and the average speed. Wherein, the warning temperature is greater than the target temperature.

[0039] Optionally, the target temperature is greater than the ambient temperature.

[0040] In the embodiment of the present application, considering the cooling energy consumption problem, the temperature of the cooling liquid will not be cooled below the ambient temperature. Moreover, the target temperature can be greater than the ambient temperature by a preset value, and the preset value is less than the difference threshold value, that is, the target temperature is a little higher than the ambient temperature, which can ensure that the temperature of the cooling liquid is low and further save energy consumption. For example, the ambient temperature is 35℃, and the target temperature is 37℃; the ambient temperature is 35℃, and the target temperature is 40℃.

[0041] Optionally, the first step comprises: According to the ambient temperature, the average speed and a preset target corresponding relationship, a second time length required for cooling the cooling liquid from a preset warning temperature to a preset target temperature is determined.

[0042] Wherein, the target corresponding relationship is the corresponding relationship between the ambient temperature, the average speed, the warning temperature, the target temperature and the second time length.

[0043] In this embodiment, the cooling system can be tested. Under standard test conditions, the system can be simulated to operate at the target heat dissipation rate under different ambient temperatures and average vehicle speeds, and the second time required to cool the coolant from different warning temperatures to different target temperatures can be determined. This establishes the correspondence between ambient temperature, average vehicle speed, warning temperature, target temperature, and second time, thus obtaining the target correspondence. The correspondence can be a formula or a table, etc.

[0044] For example, Table 1 is a target-to-target correspondence table: Table 1

[0045] The second duration can be obtained by interpolation from the table above based on ambient temperature, average vehicle speed, warning temperature, and target temperature.

[0046] The second step is to determine the target time based on the first and second durations.

[0047] In this embodiment of the application, the target time is determined based on the first estimated driving time of the vehicle and the second time that the coolant needs to be cooled. This allows it to be determined at what time the coolant temperature should be reduced, so that the coolant can be reduced before charging.

[0048] Optional, the second step includes: If the first duration is less than or equal to the second duration, the current time is determined as the target time; if the first duration is greater than the second duration, the difference between the first and second durations is calculated to obtain the third duration, and the current time is added to the third duration to obtain the target time.

[0049] In this embodiment, if the first duration is less than or equal to the second duration, it means the second duration required for the coolant to reach the target temperature is longer. Therefore, the current moment is determined as the target moment, meaning the cooling system immediately operates at the target heat dissipation capacity to maximize the coolant temperature reduction before the vehicle reaches the charging station. If the first duration is longer than the second duration, it means there is sufficient time for the coolant to cool during the vehicle's journey. Therefore, the difference between the first and second durations is calculated to obtain a third duration, and the current moment is added to the third duration to determine the target moment. This means cooling of the coolant begins when there is still a second duration of travel time remaining before reaching the charging station.

[0050] For example, if the ambient temperature is 35°C, the warning temperature is 65°C, the vehicle is 2 kilometers away from the charging station, the estimated first time required to reach the charging station is 5 minutes, and the estimated second time required for the coolant to drop from 65°C to the target temperature of 40°C is 10 minutes, then the cooling system should be immediately controlled to operate at the target heat dissipation capacity so that the coolant temperature is as low as possible when the vehicle arrives at the charging station.

[0051] Optionally, after the second step, the method further comprises: Before the time reaches the target moment, if the actual temperature of the cooling liquid is greater than the early warning temperature, the cooling system is controlled to operate at a preset energy-saving heat dissipation amount to reduce the actual temperature to the early warning temperature.

[0052] The energy-saving heat dissipation amount is less than the target heat dissipation amount.

[0053] It can be understood that when the actual temperature of the cooling liquid is greater than the early warning temperature, the temperature of the cooling liquid has been relatively high, and the cooling system can be started at this time to cool, so as to prevent the temperature of the cooling liquid from being too high, which will require more time to reduce the temperature of the cooling liquid in the future. In addition, the cooling system can also be used to cool other equipment, and if the temperature of the cooling liquid is too high, it can affect the cooling effect of other equipment. Therefore, when the actual temperature of the cooling liquid is greater than the early warning temperature, the cooling system is controlled to operate at a preset energy-saving heat dissipation amount to reduce the actual temperature to the early warning temperature, so that the temperature of the cooling liquid is kept at the early warning temperature as much as possible. After the time reaches the target moment, the cooling system can be controlled to operate at the target heat dissipation amount to reduce the temperature of the cooling liquid from the early warning temperature until the temperature of the cooling liquid can be reduced to the target temperature when the vehicle reaches the charging station.

[0054] If the actual temperature of the cooling liquid is greater than the early warning temperature before the time reaches the target moment, the cooling system is not controlled to operate, and under the high temperature of the cabin, the temperature of the cooling liquid will further increase, which can be much higher than the early warning temperature. When the time reaches the target moment, the cooling system is controlled to operate at the target heat dissipation amount to reduce the temperature of the cooling liquid, but when the vehicle reaches the charging station, the temperature of the cooling liquid can not be reduced to the target temperature. Therefore, when the actual temperature of the cooling liquid is greater than the early warning temperature before the time reaches the target moment, the cooling system is not controlled to operate, and the early warning temperature can be set as high as possible, for example, 90℃ or 85℃, so that the determined target moment will be earlier, and the cooling liquid can be cooled earlier to make the temperature of the cooling liquid as low as possible when the vehicle reaches the charging station.

[0055] If the actual temperature of the cooling liquid is less than or equal to the early warning temperature, the cooling system can not be started, or the cooling system is controlled to operate at a heat dissipation amount less than the energy-saving heat dissipation amount.

[0056] For example, the ambient temperature is 35℃, the current temperature of the coolant is 35℃ (the coolant temperature is the same as the ambient temperature after the vehicle is parked for a long time and started shortly), the navigation software indicates that the driver is going to charge, the distance to the charging station is about 15 kilometers, the first time length is expected to be 20 minutes, the current battery pack remaining power is 15%, the vehicle travels to the charging station in hybrid mode, the engine state is in the starting state during the travel process, the cabin temperature increases rapidly, and it is calculated that the coolant temperature will reach the warning temperature of 65℃ after about 10 minutes. When the coolant temperature reaches the warning temperature of 65℃, the cooling system is controlled to operate at the energy-saving heat dissipation amount, so that the coolant temperature is maintained at 65℃. At the same time, the average vehicle speed is 40km / h, and the coolant temperature decreases from 65℃ to the target temperature of 37℃, which takes 5 minutes. Therefore, the cooling system is controlled to operate at the target heat dissipation amount 5 minutes before the vehicle reaches the charging station, so that the coolant can be reduced to 37℃ when the vehicle arrives at the charging station. Based on the same application concept, the embodiment of the present application also provides a control device of a vehicle-mounted charger cooling system, Figure 2 which is a structural block diagram of the control device of the vehicle-mounted charger cooling system provided by the embodiment of the present application, as Figure 2 shown, the device 200 includes a first acquisition module 201, a second acquisition module 202, a determination module 203 and a cooling module 204.

[0057] The first acquisition module 201 is configured to acquire the destination of the vehicle travel. The second acquisition module 202 is configured to acquire the engine state and the average vehicle speed of the vehicle, and the ambient temperature and the arrival time of the vehicle travel to the charging station if the destination is the charging station, and the engine state includes the starting state and the closing state. The determination module 203 is configured to determine the target time according to the ambient temperature, the average vehicle speed and the arrival time if the engine state is the starting state, and the target time is earlier than the arrival time. The cooling module 204 is configured to control the cooling system to operate at a preset target heat dissipation amount at the target time to reduce the coolant temperature in the cooling system.

[0058] Optionally, the disadvantage module 203 includes: A calculation unit is configured to calculate the difference between the current time and the arrival time to obtain a first time length. A determination unit is configured to determine the target time according to the ambient temperature, the average vehicle speed and the first time length.

[0059] Optionally, the determination unit includes: A first determination sub-unit is configured to determine a second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature and the average vehicle speed. A second determination sub-unit is configured to determine the target time according to the first time length and the second time length.

[0060] Optionally, the second determining sub-unit is further configured to: if the first time length is less than or equal to the second time length, determining the current time as the target time; if the first time length is greater than the second time length, calculating a difference between the first time length and the second time length to obtain a third time length, and determining a time obtained by adding the third time length to the current time as the target time.

[0061] Optionally, the first determining sub-unit is further configured to: determining, according to the ambient temperature, the average vehicle speed, and a preset target correspondence relationship, a second time length required for cooling the coolant from the preset warning temperature to the preset target temperature; wherein the target correspondence relationship is a correspondence relationship between the ambient temperature, the average vehicle speed, the warning temperature, the target temperature, and the second time length.

[0062] Optionally, the device 200 further comprises: before the time reaches the target time, if the actual temperature of the coolant is greater than the warning temperature, controlling the cooling system to operate at a preset energy-saving heat dissipation amount to reduce the actual temperature to the warning temperature; wherein the energy-saving heat dissipation amount is less than the target heat dissipation amount.

[0063] Optionally, the target temperature is greater than the ambient temperature.

[0064] It can be understood that the device provided by the above embodiments is only exemplified by the division of the above functional modules, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0065] The embodiments of the present application also provide an electronic device, which can include a processor and a memory, wherein the processor and the memory can be connected to each other through a bus or other means.

[0066] The processor can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or can be configured as one or more integrated circuits implementing embodiments of the application, or can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, etc., or a combination thereof.

[0067] The memory can include mass storage for data or instructions. By way of example, and not limitation, the memory can include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disc, a magneto-optical disc, magnetic tape, or a Universal Serial Bus (USB) drive or a combination of two or more of these. The memory can include removable or non-removable (or fixed) media, where appropriate. The memory can be internal or external to the electronic device, where appropriate. In particular embodiments, the memory can be non-volatile, solid-state memory.

[0068] In one example, the memory can be read only memory (ROM). In one example, the ROM can be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0069] The processor implements the control method of the on-board charger cooling system of any one of the above embodiments by reading and executing the computer program instructions stored in the memory.

[0070] In one example, the electronic device can further include a communication interface and a bus. The processor, the memory, and the communication interface are connected through the bus and complete communication with each other. The communication interface is mainly used to realize the communication between the modules, devices, units, and / or equipment in the embodiments of the application. Where appropriate, the bus can include one or more buses.

[0071] In addition, in combination with the control method of the vehicle-mounted charger cooling system in the above embodiments, the embodiments of the present application can provide a computer readable storage medium for implementation. The computer readable storage medium has computer program instructions stored thereon; the computer program instructions are executed by a processor to implement any one of the control methods of the vehicle-mounted charger cooling system in the above embodiments.

[0072] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, the processes of the above-mentioned embodiments can be included. The storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid state drive (SSD), etc. The storage medium can also include a combination of the above-mentioned types of memories.

[0073] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages: The control method, device, equipment and medium of the vehicle-mounted charger cooling system provided by the embodiments of the present application can obtain the destination of vehicle driving, understand the driving direction of the user; if the destination is a charging station, the engine state and average speed of the vehicle, as well as the environmental temperature and the arrival time of the vehicle driving to the charging station are obtained, so as to understand the parameters affecting the cooling capacity of the cooling system when the user wants to charge; if the engine state is the starting state, the target time is determined according to the environmental temperature, the average speed and the arrival time, so as to determine when to reduce the cooling liquid temperature in advance according to the parameters affecting the cooling capacity of the cooling system in the case that the cabin temperature may rise rapidly, wherein the target time is earlier than the arrival time; the cooling system is controlled to operate at a preset target heat dissipation amount at the target time, so as to reduce the cooling liquid temperature in the cooling system, so that the cooling liquid temperature is lower when the vehicle arrives at the charging station. The temperature of the cooling liquid is reduced in advance before charging, so that the cooling liquid temperature can be lower during charging, which can better cool the vehicle-mounted charger, reduce the occurrence of charging jump, and ensure that the battery pack can be normally charged.

[0074] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0075] Similarly, it is to be understood that the embodiments of the application can include hardwired and / or program modules and that the various embodiments of the application can be implemented by computer, hardware, software, firmware, middleware, microcode and / or any combination of the above. To clearly illustrate this interchangeability of hardware and software, various embodiments of the application are described generally in terms of their functionality while describing at least one illustrative embodiment; however, those skilled in the art will appreciate that the various embodiments of the present application can include software, firmware, hardware, and / or any combination thereof. Portions of this description can be presented in terms of software, firmware, and symbolic representations of operations (e.g., in C or other languages) that associate with structural computers components or steps. These descriptions and representations are used by those skilled in the art to describe and construct such concepts. It is understood that the various embodiments of the present application can be implemented, at least in part, in the form of software running on hardware constructed of one or more devices. However, those skilled in the art will appreciate that the mechanisms of the present application are capable of being implemented in hardware alone, software alone, or any combination thereof.

[0076] It is to be understood that the embodiments of the application are illustrative of the principles of the present application. Numerous modifications and adaptations will be readily apparent to those skilled in the art in view of this disclosure without departing from the spirit and scope of the present application as defined in the following claims. Accordingly, the summary of application and detailed description are to be regarded as illustrative only and not restrictive of the present application.

Claims

1. A control method of a cooling system of an on-board charger, characterized by, The method comprises: acquiring a destination of a vehicle; if the destination is a charging station, acquiring an engine state and an average vehicle speed of the vehicle, and an ambient temperature and an arrival time of the vehicle driving to the charging station, the engine state comprising a start state and a stop state; if the engine state is the start state, determining a target time according to the ambient temperature, the average vehicle speed and the arrival time, the target time being earlier than the arrival time; controlling the cooling system to operate at a preset target heat dissipation amount at the target time to reduce a coolant temperature in the cooling system.

2. The control method of the vehicle-mounted charger cooling system according to claim 1, characterized by, The determination of the target time according to the ambient temperature, the average vehicle speed and the arrival time comprises: calculating a difference between a current time and the arrival time to obtain a first time length; determining the target time according to the ambient temperature, the average vehicle speed and the first time length.

3. The control method of the vehicle-mounted charger cooling system according to claim 2, characterized by, The determination of the target time according to the ambient temperature, the average vehicle speed and the first time length comprises: determining a second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature and the average vehicle speed; determining the target time according to the first time length and the second time length.

4. The control method of the vehicle-mounted charger cooling system according to claim 3, characterized by, The determination of the target time according to the first time length and the second time length comprises: if the first time length is less than or equal to the second time length, determining the current time as the target time; if the first time length is greater than the second time length, calculating a difference between the first time length and the second time length to obtain a third time length, and determining a time obtained by adding the third time length to the current time as the target time.

5. The control method of the vehicle-mounted charger cooling system according to claim 3, characterized by, The determination of the second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature and the average vehicle speed comprises: determining the second time length required for cooling the coolant from a preset warning temperature to a preset target temperature according to the ambient temperature, the average vehicle speed and a preset target correspondence relationship; wherein the target correspondence relationship is a correspondence relationship between the ambient temperature, the average vehicle speed, the warning temperature, the target temperature and the second time length.

6. The control method of the vehicle-mounted charger cooling system according to claim 3, characterized by, After the determination of the target time, the method comprises: before the time reaches the target time, if an actual temperature of the coolant is greater than the warning temperature, controlling the cooling system to operate at a preset energy-saving heat dissipation amount to reduce the actual temperature to the warning temperature; wherein the energy-saving heat dissipation amount is less than the target heat dissipation amount.

7. The control method of the vehicle-mounted charger cooling system according to claim 1, characterized by, The target temperature is greater than the ambient temperature.

8. A control device for a cooling system of an on-board charger, characterized by The device comprises: a first acquisition module configured to acquire a destination of a vehicle; a second acquisition module configured to, if the destination is a charging station, acquire an engine state and an average vehicle speed of the vehicle, and an ambient temperature and an arrival time of the vehicle driving to the charging station, the engine state comprising a start state and a stop state; determining, if the engine state is the starting state, a target time according to the ambient temperature, the average vehicle speed and the arrival time, the target time being earlier than the arrival time; cooling the cooling system at the target time to run at a preset target heat dissipation amount, so as to reduce the temperature of the cooling liquid in the cooling system.

9. An electronic device, comprising: The method comprises the following steps: a memory and a processor, which are connected in communication with each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the method in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for causing the computer to perform the method in any one of claims 1-7.

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