Control method and device of vehicle-mounted charger, computing equipment and computer program product

Abstract

The embodiment of the invention provides a control method of a vehicle-mounted charger, and relates to the technical field of vehicles, and the method comprises the following steps: obtaining the temperature of a water inlet of the vehicle-mounted charger configured on a vehicle; determining a power mode of the vehicle-mounted charger according to the temperature of the water inlet, wherein the power mode indicates available power corresponding to the vehicle-mounted charger; further detecting the output power of the vehicle-mounted charger, and determining the residual power corresponding to the vehicle-mounted charger in combination with the output power and the available power; comparing the residual power with a preset threshold value to obtain comparison information; and configuring a cooling instruction according to the comparison information so as to carry out temperature control and power mode adjustment on the vehicle-mounted charger. Therefore, the dynamic power control process of the vehicle-mounted charger is realized, the target temperature and the power mode reached by the vehicle-mounted charger are dynamically adjusted due to the fact that the residual power in different power modes is adopted for power adaptation, and the vehicle-mounted charger is enabled to fully release performance while saving energy consumption.

Description

Technical Field

[0001] The present specification relates to the field of vehicle technology, specifically, to the control technology of an on-board charger in the field of vehicle technology, and more specifically, to a control method, device, computing equipment and computer program product of an on-board charger. Background Art

[0002] With the development of automotive technology, most new energy vehicles now have the function of external discharge of 220V, which can provide users with the 220V power supply required for camping and car-to-car charging. The main body of this function is the on-board charger (OBC). The main principle of OBC to achieve this function is that there is a DC / AC circuit unit inside, which can convert the high-voltage direct current of the power battery pack into alternating current, thereby providing external discharge function.

[0003] However, power products generate heat during operation, which causes the temperature of power devices to rise. In order to limit the temperature to a level higher than the device's tolerance, cooling is required. Therefore, how to balance the relationship between cooling energy consumption and output power becomes a difficult problem. Summary of the invention

[0004] The embodiments of this specification provide a control method, device, computing equipment and computer program product for an on-board charger, so that the on-board charger can fully release its performance while saving energy consumption.

[0005] To achieve the above technical objectives, the embodiments of this specification provide the following technical solutions:

[0006] In a first aspect, an embodiment of the present specification provides a control method for a vehicle charger, comprising:

[0007] Get the water inlet temperature of the on-board charger configured for the vehicle;

[0008] Determining a power mode of the on-board charger according to the water inlet temperature, wherein the power mode indicates the available power corresponding to the on-board charger;

[0009] Detecting the output power of the on-board charger, and determining the remaining power corresponding to the on-board charger in combination with the output power and the available power;

[0010] Comparing the remaining power with a preset threshold to obtain comparison information;

[0011] A cooling instruction is configured according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, a first target temperature corresponding to the strong cooling request is lower than a second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

[0012] Optionally, in some possible implementations, determining the power mode of the on-board charger according to the water inlet temperature includes:

[0013] determining a vehicle function mode the vehicle is in;

[0014] Determine a water temperature limit value corresponding to the on-board charger according to the vehicle function mode;

[0015] The water inlet temperature is compared with the water temperature limit value to determine the power mode of the on-board charger.

[0016] By configuring water temperature limit values ​​adapted to different vehicle function modes, the accuracy of power mode determination in different vehicle function modes is improved.

[0017] Optionally, in some possible implementations, detecting the output power of the on-board charger and determining the remaining power corresponding to the on-board charger in combination with the output power and the available power includes:

[0018] Determining a collection period according to a vehicle function mode of the vehicle;

[0019] Detecting the output voltage of the on-board charger based on the acquisition period, and determining the output current through a current sensor;

[0020] Determine the output power of the on-board charger according to the output voltage and the output current;

[0021] The remaining power corresponding to the on-board charger is determined by combining the output power and the available power.

[0022] The collection period is dynamically adjusted through the vehicle function mode to avoid the output power detection process being affected by output fluctuations or special events, improve the accuracy of output power detection, and thus enhance the credibility of the remaining power.

[0023] Optionally, in some possible implementations, comparing the remaining power with a preset threshold to obtain comparison information includes:

[0024] determining power demand information according to a vehicle function mode of the vehicle;

[0025] Configure a corresponding preset threshold based on the power demand information;

[0026] The remaining power is compared with the preset threshold to obtain comparison information.

[0027] By configuring preset thresholds adapted to different vehicle functional modes, the power requirements under different vehicle functional modes can be accurately reflected, thereby improving the accuracy of the remaining power indicated by the comparison information.

[0028] Optionally, in some possible implementations, the vehicle function mode is a camping mode, and determining the power demand information according to the vehicle function mode of the vehicle includes:

[0029] Acquire power history data of the vehicle in the camping mode, wherein the power history data records the corresponding relationship between time and output power in the camping mode;

[0030] A current time is determined to determine the power demand information according to the current time and the power history data.

[0031] By analyzing the historical power data in the camping mode, the power demand at different times in the camping mode can be obtained, thereby improving the accuracy of the current power demand information.

[0032] Optionally, in some possible implementations, the vehicle function mode is a vehicle-to-vehicle charging mode, and determining the power demand information according to the vehicle function mode of the vehicle includes:

[0033] Acquiring seat sensor information of the vehicle in a vehicle-to-vehicle charging mode;

[0034] If the seat sensor information indicates that the user is sitting, obtaining a power adjustment parameter;

[0035] The power requirement information is determined based on the power regulation parameter.

[0036] By acquiring seat sensor information in the car-to-car charging mode, the user's riding situation in the vehicle can be obtained, and appropriate power can be allocated to adapt to the needs of different numbers of users, thereby improving the accuracy of power demand information.

[0037] Optionally, in some possible implementations, configuring a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger includes:

[0038] If the comparison information indicates that the remaining power is insufficient, configuring the cooling instruction as a strong cooling instruction;

[0039] sending the strong cooling instruction to a cooling control system of the vehicle, so that the cooling control system controls the temperature of the coolant according to the first target temperature and controls the temperature of the on-board charger;

[0040] Adjusting the on-board charger to a first power mode;

[0041] or;

[0042] If the comparison information indicates that the remaining power is sufficient, configuring the cooling instruction as a weak cooling instruction;

[0043] sending the weak cooling instruction to a cooling control system of the vehicle, so that the cooling control system performs temperature control on the coolant according to the second target temperature and performs temperature control on the on-board charger;

[0044] The on-board charger is adjusted to a second power mode, wherein the available power of the second power mode is less than that of the first power mode.

[0045] The cooling control system responds to cooling commands of different intensities, thereby controlling the temperature of the coolant, achieving temperature control of the on-board charger, and ensuring the temperature stability of the on-board charger.

[0046] Optionally, in some possible implementations, the method further includes:

[0047] Displaying the water inlet temperature, power mode and vehicle function mode of the on-board charger on the target interface;

[0048] In response to the setting operation for the target interface, the water inlet temperature and the power mode are adjusted in a vehicle function mode.

[0049] Through the interactive interface provided by the target interface, users can directly control power requirements, meet the physical needs of different users, and improve user experience.

[0050] In a second aspect, an embodiment of the present specification provides a control device for a vehicle charger, comprising:

[0051] An acquisition unit, used to acquire the water inlet temperature of an on-board charger configured for the vehicle;

[0052] A control unit, configured to determine a power mode of the on-board charger according to the water inlet temperature, wherein the power mode indicates the available power corresponding to the on-board charger;

[0053] The control unit is further used to detect the output power of the on-board charger, and determine the remaining power corresponding to the on-board charger in combination with the output power and the available power;

[0054] The control unit is further used to compare the remaining power with a preset threshold to obtain comparison information;

[0055] The control unit is further used to configure a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, the first target temperature corresponding to the strong cooling request is lower than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

[0056] In a third aspect, an embodiment of the present specification further provides a computing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method of the vehicle charger as described above when executing the computer program.

[0057] In a fourth aspect, an embodiment of the present specification further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the control method of the on-board charger as described above is implemented.

[0058] In a fifth aspect, an embodiment of the present specification provides a computer program product or a computer program, wherein the computer program product includes a computer program, and the computer program can be stored in a computer-readable storage medium or in the cloud; the processor of the computer device reads the computer program, and when the processor executes the computer program, the steps of the above-mentioned vehicle charger control method are implemented.

[0059] It can be seen from the above technical scheme that the control method of the on-board charger provided in the embodiment of this specification obtains the water inlet temperature of the on-board charger configured for the vehicle; then determines the power mode of the on-board charger according to the water inlet temperature, and the power mode indicates the available power corresponding to the on-board charger; further detects the output power of the on-board charger, and determines the residual power corresponding to the on-board charger in combination with the output power and the available power; then compares the residual power with the preset threshold to obtain comparison information; and then configures the cooling instruction according to the comparison information to control the temperature of the on-board charger and adjust the power mode, and the cooling instruction includes a strong cooling request and a weak cooling request, and the first target temperature corresponding to the strong cooling request is less than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is greater than the available power at the second target temperature. Thus, the dynamic power control process of the on-board charger is realized. Since the residual power under different power modes is used for power adaptation, the target temperature and power mode reached by the on-board charger are dynamically adjusted, so that the on-board charger can fully release performance while saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0061] Figure 1 A schematic diagram of an application environment of a control method for a vehicle charger provided in accordance with an embodiment of the present specification;

[0062] Figure 2 A flowchart of a control method of a vehicle charger provided in accordance with an embodiment of the present specification;

[0063] Figure 3 An inverter power curve diagram of a vehicle charger provided in accordance with an embodiment of the present specification;

[0064] Figure 4 A schematic diagram of a control method for a vehicle charger provided in accordance with an embodiment of the present specification;

[0065] Figure 5 A schematic diagram of functional modules of a control device for a vehicle charger provided in accordance with an embodiment of the present specification;

[0066] Figure 6 A schematic diagram of the structure of a computing device provided for one embodiment of the present specification. DETAILED DESCRIPTION

[0067] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0068] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0069] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0070] With the development of automotive technology, most new energy vehicles now have the function of external discharge of 220V, which can provide users with the 220V power supply required for camping and car-to-car charging. The main body of this function is the on-board charger (OBC). The main principle of OBC to achieve this function is that there is a DC / AC circuit unit inside, which can convert the high-voltage direct current of the power battery pack into alternating current, thereby providing external discharge function.

[0071] However, power products generate heat during operation, which causes the temperature of power devices to rise. In order to limit the temperature to a level higher than the device's tolerance, cooling is required. Therefore, how to balance the relationship between cooling energy consumption and output power becomes a difficult problem.

[0072] To solve the above problems, the embodiments of this specification provide a control system for an on-board charger, and the control method for an on-board charger provided in the embodiments of this specification is applied to the control system of the on-board charger. The control system improves the output power of the OBC inverter through a power dynamic adjustment algorithm to achieve a balance between energy consumption and output power.

[0073] Specifically, the vehicle information interaction system may include: Figure 1The operating environment formed by the server 110 and the vehicle 120 in the embodiment. The vehicle 120 communicates with the server 110 through a network connection. The functions implemented in the vehicle 120 can be local processing by the vehicle 120, or the vehicle 120 receives information and uploads it to the server 110 in the cloud, and the server 110 in the cloud processes and sends it to the vehicle 120. Among them, the server 110 can be an electronic device with certain computing and processing capabilities. It can have a network communication module, a processor, and a memory, etc. Of course, the server 110 can also refer to the software running in the electronic device. The server 110 can also be a distributed server, which can be a system with multiple processors, memories, network communication modules, etc. operating in collaboration. Alternatively, the server 110 can also be a cluster formed by several servers 110. Alternatively, with the development of science and technology, the server 110 can also be a new technical means that can realize the corresponding functions of the implementation method of the specification. For example, it can be a new form of "server" based on quantum computing.

[0074] Specifically, when the on-board charger is controlled based on the above control system, the water inlet temperature of the on-board charger configured for the vehicle is obtained; then the power mode of the on-board charger is determined according to the water inlet temperature, and the power mode indicates the available power corresponding to the on-board charger; the output power of the on-board charger is further detected, and the residual power corresponding to the on-board charger is determined in combination with the output power and the available power; then the residual power is compared with the preset threshold to obtain comparison information; and then the cooling instruction is configured according to the comparison information to control the temperature of the on-board charger and adjust the power mode, and the cooling instruction includes a strong cooling request and a weak cooling request, and the first target temperature corresponding to the strong cooling request is less than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is greater than the available power at the second target temperature. Thus, the dynamic power control process of the on-board charger is realized. Since the residual power under different power modes is used for power adaptation, the target temperature and power mode reached by the on-board charger are dynamically adjusted, so that the on-board charger can fully release its performance while saving energy consumption.

[0075] Based on the above concept, an embodiment of the present specification provides a control method for a vehicle-mounted charger. The control method for a vehicle-mounted charger provided in the embodiment of the present specification will be exemplarily described below in conjunction with the accompanying drawings.

[0076] To be applied to Figure 1 Taking the vehicle in the example, some embodiments of this specification exemplify the control method of the vehicle charger, such as Figure 2 As shown, Figure 2 A flow chart of a control method of a vehicle charger provided for one embodiment of the present specification; the control method of the vehicle charger includes:

[0077] 201. Obtain the water inlet temperature of the on-board charger configured for the vehicle.

[0078] In this embodiment, the vehicle is a new energy vehicle, and the on-board charger configured for the vehicle has the function of external discharge of 220V. The application of the external discharge function can include a one-to-one external discharge scenario and a one-to-many external discharge scenario.

[0079] Among them, the functional mode of the vehicle corresponding to the one-to-one external discharge scenario can be reflected through the vehicle-to-vehicle charging (V2V) mode. The vehicle-to-vehicle charging mode is a technology that electric vehicles use special equipment or cables to achieve power sharing. Its core function is to allow vehicles with sufficient power to provide emergency charging support for vehicles with power shortages.

[0080] The one-to-many external discharge scenario can be reflected through the vehicle's camping mode. The camping mode is a vehicle function mode designed specifically for outdoor parking scenarios. It mainly serves the user's needs for long-term use of in-vehicle equipment (such as air conditioning, lighting, entertainment systems, etc.) when the vehicle is parked. It can be specifically applied to outdoor camping scenarios, such as parking for rest at night and sheltering from the sun and rain during the day; temporary office / entertainment scenarios, such as in-car meetings, movie watching, games, etc.; emergency scenarios, such as temporary shelters in extreme weather.

[0081] The 220V power supply required for the above-mentioned camping and V2V scenarios is implemented by the on-board charger (OBC). The main principle that OBC can achieve this function is that there is a DC / AC circuit unit inside, which can convert the high-voltage direct current of the power battery pack into alternating current, which is the inverter process.

[0082] Therefore, in order to realize the external discharge function in the above-mentioned different scenarios, the on-board charger is required to provide sufficient power output. Since the on-board charger has different power modes, the available power is different in different power modes. Therefore, in order to meet different output power requirements, it is necessary to switch between different power modes.

[0083] However, considering that the energy consumption in different power modes is different, and the energy consumption is proportional to the power size, it is necessary to keep the on-board charger in normal power mode as much as possible while meeting the vehicle functions, so as to achieve the purpose of energy saving.

[0084] Specifically, this embodiment controls the output power of the on-board charger based on temperature adjustment, and combines the adjustment process of the power mode to meet different output power requirements.

[0085] It is understandable that the process of controlling the output power of the on-board charger by adjusting the temperature is because the OBC may present different inverter output powers at different water temperatures. Figure 3 As shown, Figure 3 An inverter power curve of an on-board charger is provided for one embodiment of the present specification; the inverter power curve shows the inverter power curve of the on-board charger at different temperatures in high power mode (available power 6KVA); wherein, above 45°C (350V~420V), the OBC inverter output power is 6KVA; within the water temperature of 45°C (350V~420V), the OBC inverter output power reaches 6.6KVA. It can be seen that the output power of the on-board charger within the water temperature of 45°C is higher than the output power of the on-board charger above the water temperature of 45°C (6.6-6=0.6KVA), that is, it is increased by 10%, so the extra power of the on-board charger can be released by adjusting the specific temperature.

[0086] However, in order to ensure energy consumption, the vehicle will not control the water temperature within 45°C, and generally control the water temperature between 50°C and 65°C, so the 6.6KVA inverter power cannot be used. Based on this, this embodiment increases the inverter power and balances the energy consumption.

[0087] Among them, the water inlet temperature is the water inlet temperature of the cooling control system configured for the on-board charger, and the cooling control system adjusts the temperature of the on-board charger by controlling the heat dissipation of the coolant. Among them, the detection process of the water inlet temperature, since a temperature sensor (such as a drive motor water inlet temperature sensor) is usually installed at the water inlet of the cooling system of the on-board charger, the inlet temperature of the coolant is monitored in real time through the temperature sensor. The sensor is integrated in the coolant circulation path, for example, at a key node where the coolant flows through the on-board charger; specifically, the temperature sensor can use a negative temperature coefficient (NTC) resistor, and the resistance value decreases when the temperature increases, and vice versa. Furthermore, by measuring the change in the resistance value of the sensor with a multimeter, the corresponding temperature value can be indirectly calculated.

[0088] 202. Determine the power mode of the on-board charger according to the water inlet temperature, where the power mode indicates the available power corresponding to the on-board charger.

[0089] In this embodiment, in order to determine the current available power of the on-board charger, it is necessary to determine the power mode of the on-board charger. The available power range of the on-board charger is different in different power modes. For example, the available power in normal power mode is 0-3.3KVA, while the available power in high power mode is 0-6KVA. The energy consumption in different power modes is different, and the energy consumption is proportional to the power size. Therefore, it is necessary to keep the on-board charger in normal power mode as much as possible while meeting the vehicle functions.

[0090] It can be understood that the normal power mode is the conventional power mode of the on-board charger. In this power mode, its available power can meet the commonly used external discharge needs, such as the connection of small appliances within 2KVA in camping mode, or the slow charging power demand in car-to-car charging mode. In this power mode, the energy consumption is small and the circuit load of the on-board charger is small; and the high power mode is the power mode in which the output power of the on-board charger is safely released. In this power mode, its available power can meet all external discharge functions supported by the vehicle, but the energy consumption is high in this power mode, and the circuit load of the vehicle charger is large. Staying in this mode for a long time is likely to accelerate the loss of the on-board charger.

[0091] It should be noted that the configuration of the power mode here is an example. The power mode of the on-board charger can also be divided into low, medium, high or more levels of modes. The specific mode division depends on the actual scenario and is not limited here.

[0092] Specifically, for the determination of the power mode, since the higher the power, the higher the heat generated, the power mode of the on-board charger can be determined by detecting the water inlet temperature, that is, the power mode of the on-board charger is divided by comparing the water inlet temperature with the water temperature limit value; for example, if the water inlet temperature is higher than the water temperature limit value (65°C), the power mode of the on-board charger is determined to be the high power mode.

[0093] Among them, taking into account that different models of on-board chargers may have performance differences, the water temperature limit values ​​of different on-board chargers may be different, and the specific values ​​can be determined through targeted calibration; specifically, for the calibration process of the water temperature limit value, the different power modes of the on-board charger can be determined first, and then the water temperature limit value can be calibrated by measuring the water outlet temperature of the on-board charger when it is fully loaded under different power modes.

[0094] In a possible scenario, considering that the vehicle may be configured with different functional modes, the performance configuration of the on-board charger is different in different modes, and the water temperature limit value may also be different. Therefore, the vehicle functional mode of the vehicle can be determined first; then the water temperature limit value corresponding to the on-board charger is determined according to the vehicle functional mode, for example, 65°C in camping mode and 60°C in car-to-car charging mode. This is because the power demand range in camping mode is larger. In order to meet the power demand, a higher water temperature limit value needs to be configured. The car-to-car charging mode is generally a slow charging mode, and the power demand is relatively stable. The water temperature corresponding to the on-board charger is lower, so a lower water temperature limit value can be configured; and the water inlet temperature is compared with the water temperature limit value to determine the power mode of the on-board charger, thereby improving the adaptability of different functional modes.

[0095] Therefore, by configuring water temperature limit values ​​adapted to different vehicle functional modes, the characteristics of the vehicle's power requirements in camping mode and vehicle-to-vehicle charging mode can be matched, thereby improving the accuracy of power mode determination in different vehicle functional modes.

[0096] 203. Detect the output power of the on-board charger, and determine the remaining power corresponding to the on-board charger in combination with the output power and the available power.

[0097] In this embodiment, the output power can be determined by output voltage and current sensors, which monitor relevant information in real time and convert it into output power.

[0098] Specifically, the determination of the output power of the on-board charger relies on the collaborative work of high-precision sensors and real-time data processing technology. The specific process is as follows: first, the output voltage and current signals are collected respectively through the isolated differential voltage sensor installed in parallel and the Hall effect current sensor deployed in series. The original analog signal is digitized synchronously by the high-resolution analog-to-digital converter (ADC) after the high-frequency noise is eliminated by the anti-interference filtering circuit; then the embedded controller smoothes the discrete sampling values ​​based on the sliding average filtering algorithm, and dynamically corrects the measurement error according to the calibration parameters (including zero offset compensation, temperature drift correction and nonlinear correction curve). Finally, the accurate output power value is obtained through instantaneous power integration calculation, and synchronously transmitted to the vehicle controller through the CAN bus, forming a charging power closed-loop regulation circuit, realizing the real-time detection output process.

[0099] However, considering that the output power may fluctuate in different vehicle function modes, for example, when charging between vehicles, there is output power fluctuation. At this time, a certain collection period can be configured to detect the output power. That is, first determine the collection period according to the vehicle function mode in which the vehicle is located. For example, the output power fluctuation is small in the car-to-car charging mode, so it can be configured to collect multiple points within 5 minutes and then take the average value. In the camping mode, the output power changes suddenly and the fluctuation may be large. For example, the change in the instantaneous output power when an external electrical appliance is connected. In order to avoid the interference of the connection moment, the collection period can increase the collection frequency and extend the collection time. For example, arrange to collect once every 3 seconds within 15 minutes, and take the average value after multi-point collection. Then, detect the output voltage of the on-board charger based on the collection period, and determine the output current through the current sensor; and determine the output power of the on-board charger based on the output voltage and output current; thereby, determine the remaining power corresponding to the on-board charger in combination with the output power and the available power.

[0100] Specifically, the remaining power can be calculated using the formula:

[0101] Premaining=Pavailable-Poutput.

[0102] Among them, P remaining: remaining power; P available: the current maximum output power of the on-board charger, that is, the available power; P output: the current output power of the on-board charger.

[0103] Therefore, the collection period is dynamically adjusted through the vehicle function mode to avoid the output power detection process being affected by output fluctuations or special events, improve the accuracy of output power detection, and thus enhance the credibility of the remaining power.

[0104] 204. Compare the remaining power with a preset threshold to obtain comparison information.

[0105] In this embodiment, the comparison information is used to indicate whether the remaining power is sufficient, that is, to calculate the remaining power of the current product. When the remaining power is lower than a preset threshold, it is considered that the remaining power is insufficient, otherwise it is considered sufficient.

[0106] It can be understood that the preset threshold is used to meet the possible power demand information under different vehicle functional modes. Therefore, for the determination of the comparison information, the power demand information can be first determined according to the vehicle functional mode in which the vehicle is located; then the corresponding preset threshold is configured based on the power demand information; and the remaining power is compared with the preset threshold to obtain the comparison information.

[0107] In one possible scenario, when the vehicle function mode is camping mode, considering that users need to connect more electrical appliances in camping mode, such as kettles, electric blankets, etc., and in order to meet the power requirements of these electrical appliances, a larger power space needs to be reserved to avoid exceeding the output power of the on-board charger during the connection process; therefore, the preset threshold setting in camping mode can be configured to 1KVA, that is, the power corresponding to the preset threshold can meet the power requirements of most electrical appliances.

[0108] In addition, when the vehicle function mode is the car-to-car charging mode, considering that the power demand of the charging process in the car-to-car charging mode is relatively stable and the output power fluctuation is small, a lower power space can be reserved at this time, that is, the preset threshold in the car-to-car charging mode is less than the preset threshold in the camping mode; by adapting the configuration of the preset thresholds to different vehicle function modes, the power demand in different vehicle function modes can be accurately reflected, thereby improving the accuracy of the remaining power indicated by the comparison information.

[0109] Specifically, the configuration of preset thresholds under different vehicle function modes can also be dynamically configured according to the user operation characteristics under the vehicle function mode to achieve user-dimensional threshold adaptation and realize a personalized power control process.

[0110] When the vehicle function mode is camping mode, the user's electricity consumption in camping mode changes with time. For example, the electricity consumption at night (air conditioning, kitchen utensils, etc.) is generally higher than that during the day. This is because the electricity consumption at night needs to meet the user's multi-dimensional needs for light (lighting), heat (air conditioning, kitchen utensils, etc.) and entertainment (movies, games, etc.), while the electricity demand during the day is generally less than that at night. Further matching the user's power history data can intuitively reflect the user's power demand at different times; therefore, the power history data of the vehicle in camping mode can be obtained, and the power history data records the corresponding relationship between time and output power in camping mode; then determine the current time to determine the power demand information based on the current time and power history data. For example, if the current time is 8 o'clock in the evening, it is judged that the user may have turned on the car air conditioner at this time, and the power demand information is configured as 1KVA. By analyzing the power history data in camping mode, the power demand at different times in camping mode can be obtained, thereby improving the accuracy of the current power demand information.

[0111] In addition, when the vehicle function mode is the car-to-car charging mode, considering that the user may be waiting in the car while waiting for charging, there may be air conditioning or entertainment needs. For example, while waiting for charging, the user needs to rest in the car and needs to turn on the parking air conditioner for temperature control. In order to ensure the user's physical sense request, the specific temperature control air volume or temperature is positively correlated with the number of users in the car. At this time, the seat sensor information of the vehicle in the car-to-car charging mode can be obtained; if the seat sensor information indicates that the user is sitting, the power adjustment parameter is obtained. The more people the seat sensor information indicates, the larger the power adjustment parameter; then the power demand information is determined based on the power adjustment parameter, thereby improving the user's car experience while waiting for car-to-car charging. By obtaining the seat sensor information in the car-to-car charging mode, the user's riding situation in the vehicle can be obtained, and appropriate power can be allocated to adapt to the needs of different numbers of users, thereby improving the accuracy of the power demand information.

[0112] 205. Configure a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, the first target temperature corresponding to the strong cooling request is lower than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

[0113] In this embodiment, combined with Figure 3The results shown in the figure show that when the on-board charger is in high power mode (available power 6KVA), the OBC inverter output power is 6KVA when the temperature is above 45°C (350V~420V); when the water temperature is within 45°C (350V~420V), the OBC inverter output power reaches 6.6KVA, a 10% increase in power. Therefore, when the remaining power is insufficient, this 10% increase in power can be released, that is, the additional power is 0.6KVA.

[0114] In addition, for normal power mode, temperature adjustment can also increase the power of the on-board charger. For example, the available power in normal power mode is 3.3KVA, and the OBC inverter output power is 3.3KVA when the temperature is above 45°C (350V~420V); when the water temperature is within 45°C (350V~420V), the OBC inverter output power reaches 3.5KVA, and the power increase is (3.5-3.3) / 3.310%=6%, that is, the additional power is 0.2KVA.

[0115] Therefore, in order to release the above extra power, it is necessary to configure cooling instructions for temperature control. For the temperature control process, the cooling instruction sent by OBC is the water inlet temperature of the product. When the cooling control system receives the water inlet temperature sent by OBC, it will control the heat dissipation of the coolant by controlling the intensity of the cooling fan and other measures to achieve the water inlet temperature requested by OBC.

[0116] Specifically, the process of temperature control and power mode adjustment of the on-board charger is as follows:

[0117] If the comparison information indicates that the remaining power is insufficient, the cooling instruction is configured as a strong cooling instruction, indicating that additional power needs to be released at this time; then a strong cooling instruction is sent to the vehicle's cooling control system, so that the cooling control system controls the temperature of the coolant according to the first target temperature (for example, within 45°C), and controls the temperature of the on-board charger; and adjusts the on-board charger to the first power mode (i.e., high power mode).

[0118] When the comparison information indicates that the remaining power is sufficient, the cooling instruction is configured as a weak cooling instruction (also called a normal cooling instruction), indicating that the current power can be maintained; then a weak cooling instruction is sent to the vehicle's cooling control system, so that the cooling control system controls the temperature of the coolant according to a second target temperature (for example, within 65°C) and controls the temperature of the on-board charger; and the on-board charger is adjusted to a second power mode (i.e., normal power mode), wherein the available power of the second power mode is less than that of the first power mode, thereby saving energy consumption.

[0119] Among them, the cooling control system of the on-board charger realizes intelligent temperature control through liquid cooling or air cooling. Its working principle is: the temperature sensor monitors the temperature of the key components inside the charger (such as power module, inductor) and the coolant inlet / outlet in real time, and feeds the data back to the control unit; the control unit dynamically adjusts the speed of the electronic water pump, the air volume of the cooling fan and the coolant flow rate based on the preset thermal management strategy (such as PID algorithm or fuzzy control), such as starting the high-speed circulation mode to accelerate heat dissipation under high temperature conditions, and switching to the energy-saving mode to reduce power consumption under low load; at the same time, it combines multiple parameters such as on-board charging power and ambient temperature for coordinated control, and triggers derating protection or fault shutdown when the temperature exceeds the limit, ensuring that the system operates stably within the calibrated environment range, and achieving a triple balance of charging efficiency, thermal safety and energy consumption optimization. Therefore, the cooling control system responds to cooling commands of different intensities, thereby controlling the temperature of the coolant, realizing the temperature control of the on-board charger, and ensuring the temperature stability of the on-board charger.

[0120] It can be understood that the above-mentioned first target temperature is the calibration temperature at which the on-board charger can release additional power, and the second target temperature is the calibration temperature corresponding to the operation of the on-board charger in normal power mode; and the temperature values ​​of the above-mentioned first target temperature and the second target temperature are defined by the characteristics of the on-board charger. The specific values ​​may be different for different products, and targeted calibration can be performed.

[0121] Therefore, combined with the above control process, we can get Figure 4 The scene control flow shown, Figure 4 A scenario diagram of a control method for an on-board charger provided for an embodiment of the present specification; after the OBC is turned on, the water inlet temperature of the on-board charger can be detected; then the working mode of the on-board charger is determined according to the water inlet temperature, if the water inlet temperature is lower than the water temperature limit value, the on-board charger is determined to be working in normal power mode, if the water inlet temperature is higher than the water temperature limit value, the on-board charger is determined to be working in high power mode; after determining the power mode, the current available power can be determined; further, the current output power of the on-board charger can be detected, and it can be determined whether the remaining power of the on-board charger is sufficient, if the remaining power of the on-board charger is sufficient, a weak cooling request is sent to the cooling control system, and the OBC is configured to work in normal power mode; if the remaining power is insufficient, a strong cooling request is sent to the cooling control system, and the OBC is configured to work in high power mode.

[0122] Among them, the coordination process of temperature control and power mode adjustment is to protect the circuit of the on-board charger, that is, to prevent the vehicle from working under full load for a long time. For example, when the on-board charger sends a strong cooling request to the cooling control system, it means that the remaining power is insufficient at this time. If only temperature control is used to release additional power, such as 0.6KVA in the above example, it may not be able to meet the current output power demand at this time, causing the on-board charger to be fully loaded or overloaded, which is prone to safety hazards; further, the additional power released immediately meets the current output power demand. At this time, the on-board charger will run at a state close to full load, which has a large circuit load and affects the service life of the on-board charger.

[0123] Therefore, while releasing additional power through temperature, the power mode is adjusted to further expand the range of available power; the on-board charger works under a suitable load state, and the circuit of the on-board charger is protected.

[0124] In addition, the configuration of the weak cooling request is to maintain the normal heat dissipation requirement of the on-board charger, that is, to ensure the heat dissipation requirement of the on-board charger in the normal power mode.

[0125] It is understandable that after entering a specific power mode, the remaining power is still monitored in real time, and the power mode is adjusted in real time according to whether the remaining power is sufficient or not. For example, after entering the high power mode, the water inlet temperature is still detected. As the power headroom is maintained, when it is detected that the remaining power is sufficient, a weak cooling request is sent to the cooling control system, and the power mode of the on-board charger is adjusted to the normal power mode, thereby realizing the cyclic detection process to adapt to the dynamically changing power demand during vehicle use and achieve energy consumption balance.

[0126] In another possible scenario, the water inlet temperature, power mode and vehicle function mode of the on-board charger can also be displayed on the target interface, such as the car screen; then in response to the setting operation for the target interface, the water inlet temperature and power mode are adjusted in the vehicle function mode, for example, the target interface is the car interface in the vehicle or the client interface of the user's mobile phone. When the car-to-car charging mode is configured in the user's car screen, the parameters are adaptively adjusted according to the description of the above embodiment; or the user can control the power demand in the camping mode through the client interface, that is, the user inputs the electrical equipment that is about to be connected to the vehicle's external power supply through the mobile client, and the background configures the remaining power for the electrical equipment and dynamically adjusts the preset threshold to ensure that the electrical equipment can operate normally when connected. Through the interactive interface provided by the target interface, the user can directly control the power demand, meet the physical needs of different users, and improve the user experience.

[0127] In summary, this embodiment obtains the water inlet temperature of the on-board charger configured for the vehicle; then determines the power mode of the on-board charger according to the water inlet temperature, and the power mode indicates the available power corresponding to the on-board charger; further detects the output power of the on-board charger, and determines the residual power corresponding to the on-board charger in combination with the output power and the available power; then compares the residual power with the preset threshold to obtain comparison information; and then configures the cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, and the cooling instruction includes a strong cooling request and a weak cooling request, and the first target temperature corresponding to the strong cooling request is less than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is greater than the available power at the second target temperature. Thus, the dynamic power control process of the on-board charger is realized. Since the residual power under different power modes is used for power adaptation, the target temperature and power mode reached by the on-board charger are dynamically adjusted, so that the on-board charger can fully release its performance while saving energy consumption.

[0128] It should be noted that the multiple embodiments in this specification emphasize the parts that are different from other embodiments, and the various embodiments can be explained in comparison with each other. Any combination of the multiple embodiments in this specification by technicians in the relevant field based on general technical knowledge is included in the disclosure scope of this specification.

[0129] In an exemplary embodiment of the present specification, a control device 500 of a vehicle charger is also provided. Figure 5 As shown, Figure 5 This is a functional module diagram of a control device for a vehicle charger provided in one embodiment of the present specification. The control device 500 includes:

[0130] An acquisition unit 501 is used to acquire a water inlet temperature of an on-board charger configured for a vehicle;

[0131] A control unit 502, configured to determine a power mode of the on-board charger according to the water inlet temperature, wherein the power mode indicates the available power corresponding to the on-board charger;

[0132] The control unit 502 is further used to detect the output power of the on-board charger, and determine the remaining power corresponding to the on-board charger in combination with the output power and the available power;

[0133] The control unit 502 is further configured to compare the remaining power with a preset threshold to obtain comparison information;

[0134] The control unit 502 is also used to configure a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, the first target temperature corresponding to the strong cooling request is lower than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

[0135] Optionally, in some possible implementations, the control unit 502 is used to determine the vehicle function mode of the vehicle when determining the power mode of the on-board charger according to the water inlet temperature; determine the water temperature limit value corresponding to the on-board charger according to the vehicle function mode; and compare the water inlet temperature with the water temperature limit value to determine the power mode of the on-board charger.

[0136] Optionally, in some possible implementations, the control unit 502 is used to determine a collection period according to the vehicle function mode of the vehicle when detecting the output power of the on-board charger and determining the remaining power corresponding to the on-board charger in combination with the output power and the available power; detect the output voltage of the on-board charger based on the collection period, and determine the output current through a current sensor; determine the output power of the on-board charger based on the output voltage and the output current; and determine the remaining power corresponding to the on-board charger in combination with the output power and the available power.

[0137] Optionally, in some possible implementations, the control unit 502 is used to determine the power demand information according to the vehicle function mode of the vehicle when comparing the remaining power with a preset threshold to obtain comparison information; configure a corresponding preset threshold based on the power demand information; and compare the remaining power with the preset threshold to obtain comparison information.

[0138] Optionally, in some possible implementations, the control unit 502 is used to obtain power history data of the vehicle in camping mode when determining power demand information according to the vehicle function mode of the vehicle, the power history data recording the correspondence between time and output power in camping mode; determine the current time to determine the power demand information based on the current time and the power history data.

[0139] Optionally, in some possible implementations, the control unit 502 is used to obtain seat sensor information of the vehicle in a vehicle-to-vehicle charging mode when determining power requirement information based on the vehicle function mode of the vehicle; if the seat sensor information indicates that a user is sitting, obtain power adjustment parameters; and determine the power requirement information based on the power adjustment parameters.

[0140] Optionally, in some possible implementations, the control unit 502 is used to configure the cooling instruction as a strong cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, if the comparison information indicates that the remaining power is insufficient; send the strong cooling instruction to the cooling control system of the vehicle so that the cooling control system controls the temperature of the coolant according to the first target temperature and the on-board charger; adjust the on-board charger to the first power mode; or; if the comparison information indicates that the remaining power is sufficient, configure the cooling instruction as a weak cooling instruction; send the weak cooling instruction to the cooling control system of the vehicle so that the cooling control system controls the temperature of the coolant according to the second target temperature and the on-board charger; adjust the on-board charger to a second power mode, and the available power of the second power mode is less than that of the first power mode.

[0141] Optionally, in some possible implementations, the control unit 502 is also used to display the water inlet temperature, power mode and vehicle function mode of the on-board charger on a target interface; in response to a setting operation for the target interface, the water inlet temperature and power mode are adjusted in the vehicle function mode.

[0142] Specifically, the processing unit and the interaction unit in this embodiment may correspond to physical components. For example, the processing unit may be a processing module such as a CPU, a GPU, or a FPGA, and the interaction unit may be an interaction module such as a screen, a speaker, or a projector. The specific physical components may be any components or combinations of components having the above functions. The specific method depends on the actual scenario and is not limited here.

[0143] The control device obtains the water inlet temperature of the on-board charger configured for the vehicle; then determines the power mode of the on-board charger according to the water inlet temperature, and the power mode indicates the available power corresponding to the on-board charger; further detects the output power of the on-board charger, and determines the residual power corresponding to the on-board charger in combination with the output power and the available power; then compares the residual power with the preset threshold to obtain comparison information; and then configures the cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction includes a strong cooling request and a weak cooling request, the first target temperature corresponding to the strong cooling request is less than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is greater than the available power at the second target temperature. Thus, the dynamic power control process of the on-board charger is realized. Since the residual power under different power modes is used for power adaptation, the target temperature and power mode reached by the on-board charger are dynamically adjusted, so that the on-board charger can fully release its performance while saving energy consumption.

[0144] For the specific definition of the control device of the on-board charger, please refer to the definition of the control method of the on-board charger mentioned above, which will not be repeated here. Each unit module in the control device of the on-board charger can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0145] Another embodiment of the present application further provides a computing device, see Figure 6 As shown, an exemplary embodiment of the present specification also provides a computing device, including: a memory and a processor, the memory storing a computer program, and the processor executing the computer program when executing the computer program performs the steps of the control method of the vehicle charger according to various embodiments of the present specification described in the above embodiments of the present specification.

[0146] The internal structure of the computing device can be as follows Figure 6 As shown, the computing device includes a processor, a memory, a network interface and an input device connected via a system bus. Among them, the processor of the computing device is used to provide computing and control capabilities. The memory of the computing device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computing device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the steps of the control method of the vehicle charger according to various embodiments of the present specification are described in the above embodiments of the present specification.

[0147] The processor may include a main processor and may also include a baseband chip, a modem, etc.

[0148] The memory stores a program for executing the technical solution of the present invention, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes computer operation instructions. More specifically, the memory may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0149] The processor may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the scheme of the present invention. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

[0150] The input device may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0151] Output devices may include means that allow information to be output to a user, such as display screens, printers, speakers, etc.

[0152] The communication interface may include using any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0153] The processor executes the program stored in the memory and calls other devices, which can be used to implement each step of the control method of any vehicle charger provided in the above embodiments of the present application.

[0154] The computing device may also include a display component and a voice component. The display component may be a liquid crystal display or an electronic ink display. The input device of the computing device may be a touch layer covered on the display component, or a button, trackball or touchpad provided on the housing of the computing device, or an external keyboard, touchpad or mouse.

[0155] Those skilled in the art will understand that Figure 6The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of this specification, and does not constitute a limitation on the computing device to which the scheme of this specification is applied. The specific computing device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0156] In addition to the above-mentioned methods and devices, the control method of the on-board charger provided in the embodiments of this specification may also be a computer program product, which includes a computer program, which, when executed by a processor, enables the processor to execute the steps of the control method of the on-board charger according to various embodiments of this specification described in the above-mentioned "Exemplary Method" section of this specification.

[0157] The computer program product may be written in any combination of one or more programming languages ​​to write program code for performing the operations of the embodiments of the present specification, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0158] In addition, an embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the control method of the vehicle charger according to various embodiments of the present specification described in the above "Exemplary Method" section of the present specification.

[0159] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0160] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0161] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A control method for a vehicle charger, characterized in that: include: Get the water inlet temperature of the on-board charger configured for the vehicle; Determining a power mode of the on-board charger according to the water inlet temperature, wherein the power mode indicates the available power corresponding to the on-board charger; Detecting the output power of the on-board charger, and determining the remaining power corresponding to the on-board charger in combination with the output power and the available power; Comparing the remaining power with a preset threshold to obtain comparison information; A cooling instruction is configured according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, a first target temperature corresponding to the strong cooling request is lower than a second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

2. The method according to claim 1, characterized in that The step of determining the power mode of the on-board charger according to the water inlet temperature includes: determining a vehicle function mode the vehicle is in; Determine a water temperature limit value corresponding to the on-board charger according to the vehicle function mode; The water inlet temperature is compared with the water temperature limit value to determine the power mode of the on-board charger.

3. The method according to claim 1, characterized in that: The detecting the output power of the on-board charger and determining the remaining power corresponding to the on-board charger in combination with the output power and the available power includes: Determining a collection period according to a vehicle function mode of the vehicle; Detecting the output voltage of the on-board charger based on the acquisition period, and determining the output current through a current sensor; Determine the output power of the on-board charger according to the output voltage and the output current; The remaining power corresponding to the on-board charger is determined by combining the output power and the available power.

4. The method according to claim 1, characterized in that: The comparing the remaining power with a preset threshold to obtain comparison information includes: determining power demand information according to a vehicle function mode of the vehicle; Configure a corresponding preset threshold based on the power demand information; The remaining power is compared with the preset threshold to obtain comparison information.

5. The method according to claim 4, characterized in that The vehicle function mode is a camping mode, and determining the power demand information according to the vehicle function mode of the vehicle includes: Acquire power history data of the vehicle in the camping mode, wherein the power history data records the corresponding relationship between time and output power in the camping mode; A current time is determined to determine the power demand information according to the current time and the power history data.

6. The method according to claim 4, characterized in that The vehicle function mode is a vehicle-to-vehicle charging mode, and determining the power demand information according to the vehicle function mode of the vehicle includes: Acquiring seat sensor information of the vehicle in a vehicle-to-vehicle charging mode; If the seat sensor information indicates that the user is sitting, obtaining a power adjustment parameter; The power requirement information is determined based on the power regulation parameter.

7. The method according to claim 1, characterized in that The configuring a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger includes: If the comparison information indicates that the remaining power is insufficient, configuring the cooling instruction as a strong cooling instruction; sending the strong cooling instruction to a cooling control system of the vehicle, so that the cooling control system controls the temperature of the coolant according to the first target temperature and controls the temperature of the on-board charger; Adjusting the on-board charger to a first power mode; or; If the comparison information indicates that the remaining power is sufficient, configuring the cooling instruction as a weak cooling instruction; sending the weak cooling instruction to a cooling control system of the vehicle, so that the cooling control system performs temperature control on the coolant according to the second target temperature and performs temperature control on the on-board charger; The on-board charger is adjusted to a second power mode, wherein the available power of the second power mode is less than that of the first power mode.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: Displaying the water inlet temperature, power mode and vehicle function mode of the on-board charger on the target interface; In response to the setting operation for the target interface, the water inlet temperature and the power mode are adjusted in a vehicle function mode.

9. A control device for a vehicle charger, characterized in that: include: An acquisition unit, used to acquire the water inlet temperature of an on-board charger configured for the vehicle; A control unit, configured to determine a power mode of the on-board charger according to the water inlet temperature, wherein the power mode indicates the available power corresponding to the on-board charger; The control unit is further used to detect the output power of the on-board charger, and determine the remaining power corresponding to the on-board charger in combination with the output power and the available power; The control unit is further used to compare the remaining power with a preset threshold to obtain comparison information; The control unit is further used to configure a cooling instruction according to the comparison information to perform temperature control and power mode adjustment on the on-board charger, the cooling instruction including a strong cooling request and a weak cooling request, the first target temperature corresponding to the strong cooling request is lower than the second target temperature corresponding to the weak cooling request, and the available power of the on-board charger at the first target temperature is higher than the available power at the second target temperature.

10. A vehicle, characterized in that: The vehicle executes the control method of the on-board charger according to any one of claims 1 to 8.

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