Control method and device of vehicle charger, storage medium and vehicle charger

Abstract

Embodiments of the present application provide a control method and device of a vehicle charger, a storage medium and the vehicle charger. The vehicle charger comprises a panel and an adsorption force supply device. A device to be charged is placed on the panel. The adsorption force supply device is used to provide adsorption force to the device to be charged. The method comprises: acquiring environmental data within a preset distance range of a current position of a vehicle and acquiring current state data of the vehicle; determining a target adsorption force required for fixing the device to be charged according to the environmental data and the current state data; and adjusting the adsorption force currently provided by the adsorption force supply device according to the target adsorption force. The technical solution provided by the embodiments of the present application can improve the user experience of the vehicle charger.

Description

Technical Field

[0001] This application relates to the field of vehicle charger technology, and more specifically, to a control method, device, storage medium, and vehicle charger for a vehicle charger. Background Technology

[0002] As vehicles become increasingly feature-rich, onboard chargers are typically installed in vehicles to facilitate charging of devices such as mobile phones. Currently, these chargers provide a certain amount of magnetic force to prevent devices from slipping or moving during charging. However, this magnetic force is often very weak. This means that during driving, devices can easily fall off the charger, causing damage, reducing charging efficiency, and ultimately lowering the user experience. Summary of the Invention

[0003] The embodiments of this application provide a control method, device, storage medium, and vehicle charger for an on-board charger. The technical solutions provided by this application can improve the user experience of charging devices.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] According to a first aspect of the present application, a control method for an on-board charger is provided. The on-board charger includes a panel and an adsorption force supply device. A device to be charged is placed on the panel, and the adsorption force supply device is used to provide adsorption force to the device to be charged. The method includes: acquiring environmental data within a preset distance range of the vehicle's current location, and acquiring current state data of the vehicle; determining a target adsorption force required to fix the device to be charged based on the environmental data and the current state data; and adjusting the adsorption force currently provided by the adsorption force supply device according to the target adsorption force.

[0006] In some embodiments of this application, based on the foregoing scheme, the current state data includes the vehicle's current tire pressure data and the vehicle's current acceleration in the direction of travel. Determining the target adsorption force required to fix the charging device based on the environmental data and the current state data includes: determining the current road condition hazard level of the vehicle's current location based on the environmental data, where the current road condition hazard level characterizes the degree of road condition hazard at the vehicle's current location, and the current road condition hazard level is positively correlated with the degree of road condition hazard; and determining the target adsorption force based on the current road condition hazard level, the current tire pressure data, and the current acceleration.

[0007] In some embodiments of this application, based on the foregoing scheme, determining the target adsorption force according to the current road condition hazard level, the current tire pressure data, and the current acceleration includes: determining a first adsorption force matching the current road condition hazard level; determining a second adsorption force matching the current tire pressure data; determining a third adsorption force matching the current acceleration; and determining the target adsorption force based on the first adsorption force, the second adsorption force, and the third adsorption force.

[0008] In some embodiments of this application, based on the aforementioned scheme, determining a first adsorption force that matches the current road condition hazard level includes: obtaining a pre-constructed first correspondence between road condition hazard level and adsorption force, wherein the road condition hazard level and adsorption force are positively correlated; and determining an adsorption force corresponding to the current road condition hazard level based on the first correspondence, as the first adsorption force.

[0009] In some embodiments of this application, based on the foregoing scheme, determining the second adsorption force matching the current tire pressure data includes: acquiring tire pressure data of the vehicle under stable conditions as initial tire pressure data; determining the current tire pressure change rate of the vehicle based on the initial tire pressure data and the current tire pressure data; acquiring a pre-established second correspondence between the tire pressure change rate and the adsorption force, wherein the tire pressure change rate is positively correlated with the adsorption force; and determining the adsorption force corresponding to the current tire pressure change rate as the second adsorption force based on the second correspondence.

[0010] In some embodiments of this application, based on the foregoing scheme, determining the third adsorption force matching the current acceleration includes: obtaining a pre-constructed third correspondence between the absolute value of acceleration and the adsorption force, wherein the absolute value of acceleration is positively correlated with the adsorption force; and determining the adsorption force corresponding to the absolute value of the current acceleration based on the third correspondence, as the third adsorption force.

[0011] In some embodiments of this application, based on the foregoing scheme, determining the target adsorption force according to the first adsorption force, the second adsorption force, and the third adsorption force includes: taking the sum of the first adsorption force, the second adsorption force, and the third adsorption force as the target adsorption force.

[0012] According to a second aspect of the embodiments of this application, a control device for a vehicle charger is provided. The vehicle charger includes a panel and an adsorption force supply device. A device to be charged is placed on the panel, and the adsorption force supply device is used to provide adsorption force to the device to be charged. The device includes: an acquisition unit, used to acquire environmental data within a preset distance range of the vehicle's current location, and to acquire the vehicle's current state data; a determination unit, used to determine a target adsorption force required to fix the device to be charged based on the environmental data and the current state data; and an adjustment unit, used to adjust the adsorption force currently provided by the adsorption force supply device according to the target adsorption force.

[0013] According to a third aspect of the embodiments of this application, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium stores at least one piece of program code, the at least one piece of program code being loaded and executed by a processor to perform the operations performed by the method described in any of the first aspects above.

[0014] According to a fourth aspect of the embodiments of this application, an on-board charger is provided, including one or more processors and one or more memories, wherein the one or more memories store at least one piece of program code, the at least one piece of program code being loaded and executed by the one or more processors to perform the operations performed as described in any of the first aspects above.

[0015] The technical solution of this application provides a vehicle charger including a panel and an adsorption force supply device. The panel holds a device to be charged, and the adsorption force supply device provides adsorption force to the device to be charged. In the process of controlling the vehicle charger installed in the vehicle, firstly, environmental data within a preset distance range of the vehicle's current position and the vehicle's current state data are acquired; secondly, based on the environmental data and the current state data, the target adsorption force required to fix the device to be charged is determined; finally, the adsorption force currently provided by the adsorption force supply device is adjusted according to the target adsorption force.

[0016] Therefore, based on the technical solution of this application, during the charging process of the device to be charged while the vehicle is in motion, the target adsorption force required to fix the device to be charged can be determined in real time by acquiring the environmental data of the vehicle's current location and the vehicle's current status data. Thus, the adsorption force provided by the adsorption force supply device can be adjusted in real time according to the target adsorption force, so that the device to be charged is always fixed on the panel during the charging process and does not slide relative to it. This can prevent the device to be charged from slipping and causing damage, and also prevent the device to be charged from flying off the panel and causing injury to the driver and passengers, thereby improving the user experience of the vehicle charger.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of an on-board charger according to an embodiment of this application is shown;

[0020] Figure 2 A schematic flowchart of a control method for an on-board charger according to an embodiment of this application is shown;

[0021] Figure 3 A detailed flowchart illustrating a process for determining the target adsorption force required to fix the device to be charged based on the environmental data and the current state data, according to an embodiment of this application, is shown.

[0022] Figure 4 A detailed flowchart illustrating the process of determining the target adsorption force based on the current road condition hazard level, the current tire pressure data, and the current acceleration, according to one embodiment of this application, is shown.

[0023] Figure 5 A block diagram of a control device for an on-board charger according to an embodiment of this application is shown;

[0024] Figure 6 A schematic diagram of the structure of an on-board charger according to an embodiment of this application is shown. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Before introducing the control method of the on-board charger in the embodiments of this application, let's first combine... Figure 1 The structure of the vehicle charger provided in this application is described.

[0032] See Figure 1 The diagram shows a structural schematic of an on-board charger according to an embodiment of this application.

[0033] In this application, the device to be charged can be any electronic device that needs to be charged, including but not limited to mobile phones, Bluetooth headsets, tablets, smartwatches, etc.

[0034] In this application, the vehicle charger mentioned can provide power to the device to be charged. Optionally, the vehicle charger can be a wired vehicle charger or a wireless vehicle charger.

[0035] Optionally, in this application, the provided vehicle charger may include a panel 10 on which a device to be charged is placed. If the vehicle charger is a vehicle wireless charger, the panel 10 can not only be used to place the device to be charged, but also can be a charging panel. A charging coil is provided under the charging panel. When the device to be charged is placed on the charging panel, the charging coil wirelessly charges the placed device through the charging panel.

[0036] If the vehicle charger is a wired vehicle charger, the device to be charged can be placed on the panel 10 to fix the device to be charged during the charging process while it is being charged via a wired connection with the vehicle charger.

[0037] Optionally, in this application, the vehicle charger may also include a base 12, which provides support to the panel 10. The base 12 is located below the panel 10. If the vehicle charger is a vehicle wireless charger, a charging coil or the like may be placed between the panel 10 and the base 12.

[0038] Optionally, in this application, the vehicle charger may also include a ventilated cooling plate 11 integrated on the panel 10, which is used to cool the device to be charged.

[0039] Optionally, in this application, an adsorption force supply device may also be provided in the vehicle charger, which is used to provide adsorption force to the device to be charged.

[0040] In this application, the installation location of the adsorption force supply device is related to the type of adsorption force provided by the adsorption force supply device and the structure of the adsorption force supply device.

[0041] For example, if the adsorption force provided by the adsorption force supply device is a negative pressure adsorption force, the adsorption force supply device can be integrated on the panel 10. The specific structure of the adsorption force supply device that provides negative pressure adsorption force can include a suction cup, a cavity, and a sealing piston. One end of the suction cup is connected to the device to be charged, and the other end of the suction cup is connected to one end of the cavity. The sealing piston is movably disposed in the cavity. By adjusting the position of the piston in the cavity, the negative pressure adsorption force provided by the adsorption force supply device to the device to be charged can be changed.

[0042] For example, if the adsorption force provided by the adsorption force supply device is a magnetic attraction force, the adsorption force supply device can be set below the panel 10. The specific structure of the adsorption force supply device that provides magnetic attraction force can include multiple electromagnets. By adjusting the current input to each electromagnet, the magnetic attraction force provided by the adsorption force supply device to the device to be charged can be changed.

[0043] For example, if the adsorption force provided by the adsorption force supply device is a magnetic attraction force, the adsorption force supply device can be set below the panel 10. The specific structure of the adsorption force supply device that provides the magnetic attraction force can include a permanent magnet. By adjusting the distance between the device to be charged and the permanent magnet, the magnetic attraction force provided by the adsorption force supply device to the device to be charged can be changed.

[0044] The above are examples of three possible structures and installation positions for the adsorption force supply device. In practice, an adsorption force supply device with adjustable adsorption force can be designed according to actual conditions. This application does not limit this design.

[0045] The following detailed description of some embodiments of this application will be provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] See Figure 2 The diagram illustrates a flow chart of a control method for an on-board charger according to an embodiment of this application, specifically including the following steps 210 to 230:

[0047] It should be noted that steps 210 to 230 are performed while the vehicle is in motion, during the process of the device being charged using the on-board charger.

[0048] Step 210: Obtain environmental data within a preset distance range of the vehicle's current location, and obtain the vehicle's current status data.

[0049] In this embodiment, the environmental data acquired within a preset distance range of the vehicle's current location includes, but is not limited to, data on whether a living being (such as a person or animal) is approaching the vehicle, the volume data of the living being approaching the vehicle, the distance data between the living being approaching the vehicle and the vehicle, the speed data of other vehicles in the adjacent lanes of the vehicle's lane, the speed data of other vehicles in the vehicle's lane, the distance data between other vehicles and the vehicle, data on whether there are dangerous vehicle behaviors (including but not limited to sudden braking, overtaking, collisions, etc.) in the vehicle's lane and adjacent lanes, and road surface data in front of the vehicle, etc.

[0050] In this embodiment, environmental data within a preset distance range of the vehicle's current location can be obtained through multi-functional cameras, detection sensors, lidar, continuous damping control system (CDC), intelligent driving assistance system (ADAS), etc., installed on the vehicle.

[0051] In this embodiment, obtaining the vehicle's current state data may include the vehicle's current tire pressure data and the current acceleration in the vehicle's direction of travel. It should be noted that the acceleration mentioned in the following technical solutions of this application refers to the acceleration in the vehicle's direction of travel.

[0052] In this embodiment, the current tire pressure data of the vehicle can be obtained through a tire pressure monitoring sensor installed on the vehicle.

[0053] In this embodiment, the current acceleration in the vehicle's direction of travel can be obtained through an acceleration sensor, or by comparing the current vehicle speed with the previous vehicle speed, or by the magnitude of the accelerator / brake pedal press. Specifically, this application does not limit the method for obtaining the current acceleration.

[0054] See also Figure 2 Step 220: Determine the target adsorption force required to fix the device to be charged based on the environmental data and the current state data.

[0055] It should be noted that the target adsorption force required to fix the device to be charged can be the minimum adsorption force that ensures the device to be charged does not slide relative to the device, or it can be an adsorption force that is slightly larger than the minimum adsorption force that ensures the device to be charged does not slide relative to the device. In particular, the specific value of the target adsorption force required to fix the device to be charged is not limited in this application.

[0056] The specific implementation of step 220 can be as follows: Figure 3 Perform the steps shown:

[0057] See Figure 3The diagram illustrates a detailed process for determining the target adsorption force required to fix the device to be charged based on the environmental data and the current state data, according to an embodiment of this application. Specifically, it includes the following steps 221 to 222:

[0058] Step 221: Based on the environmental data, determine the current road condition hazard level of the vehicle's current location. The current road condition hazard level is used to characterize the degree of road condition hazard at the vehicle's current location, and the current road condition hazard level is positively correlated with the degree of road condition hazard.

[0059] In this embodiment, continuous numerical values ​​can be used to describe the road condition hazard level. For example, assuming that the range of the road condition hazard level is [0,1], then the current road condition hazard level is determined as a value within the interval [0,1].

[0060] In this embodiment, discrete numerical values ​​can also be used to describe the road condition hazard level. For example, assuming that the road condition hazard level is described using 0, 1, 2, ... 9, then the determined current road condition hazard level is an integer among 0, 1, 2, ... 9. Specifically, the description format of the road condition hazard level can be set according to the actual situation, and this application does not limit it here.

[0061] In this embodiment, the higher the determined current road condition hazard level, the higher the degree of road condition hazard at the vehicle's current location. For example, if discrete numerical values ​​are used to describe the road condition hazard level, such as 0, 1, 2, ... 9, then if the determined current road condition hazard level is 0, it means that the degree of road condition hazard at the vehicle's current location is the lowest, which can be interpreted as the road condition at the vehicle's current location being hazard-free. If the determined current road condition hazard level is 9, it means that the degree of road condition hazard at the vehicle's current location is the highest.

[0062] In this embodiment, the specific implementation method for determining the current road condition hazard level of the vehicle's current location based on the environmental data can be set according to actual conditions, and this application does not limit it here. For example, it can be executed according to the following steps 2211 to 2213:

[0063] Step 2211: Based on the environmental data, determine whether there is a living being approaching the vehicle, whether other vehicles are engaging in dangerous behavior, and whether there is a bumpy road surface in front of the vehicle.

[0064] In step 2211, if other vehicles engage in sudden braking, overtaking, or collision behaviors, it can be determined that other vehicles are engaging in dangerous behaviors that may trigger emergency braking of this vehicle.

[0065] Step 2212: If it is determined that a living person is approaching the vehicle, a first road condition hazard level is calculated based on the living person's status data; if it is determined that other vehicles are engaging in dangerous behavior, a second road condition hazard level is calculated based on the status data of other vehicles; if it is determined that there is a bumpy road surface in front of the vehicle, a third road condition hazard level is calculated based on the attribute data of the bumpy road surface.

[0066] In step 2212, the status data of the living entity includes, but is not limited to, the volume data of the living entity and the distance data between the living entity and the vehicle. The status data of other vehicles includes, but is not limited to, the distance data between other vehicles and the vehicle, and the speed of other vehicles. The attribute data of the bumpy road surface includes, but is not limited to, the bump height or depth, and the length data of the bumpy road surface.

[0067] Step 2213: Determine the current road condition hazard level based on the first road condition hazard level, the second road condition hazard level, and the third road condition hazard level.

[0068] In step 2213, a specific implementation method may be to use the average value of the first road condition hazard level, the second road condition hazard level, and the third road condition hazard level as the current road condition hazard level.

[0069] In step 2213, a specific implementation may also be to use the maximum value among the first road condition hazard level, the second road condition hazard level, and the third road condition hazard level as the current road condition hazard level.

[0070] It should be noted that the specific implementation method of step 2213 can be set by oneself, and this application does not limit it here.

[0071] See also Figure 3 Step 222: Determine the target adsorption force based on the current road condition hazard level, the current tire pressure data, and the current acceleration.

[0072] In step 222, the specific implementation method can be as follows: Figure 4 Perform the steps shown.

[0073] See Figure 4 The diagram illustrates a detailed process for determining the target adsorption force based on the current road condition hazard level, the current tire pressure data, and the current acceleration, according to an embodiment of this application. Specifically, it includes the following steps 2221 to 2224:

[0074] Step 2221: Determine the first adsorption force that matches the current road condition hazard level.

[0075] In step 2221, a specific implementation method may be: obtaining a pre-constructed first correspondence between road condition hazard level and adsorption force, wherein the road condition hazard level and adsorption force are positively correlated; based on the first correspondence, determining the adsorption force corresponding to the current road condition hazard level as the first adsorption force.

[0076] In this embodiment, it should be noted that in the first correspondence, the higher the road condition hazard level, the greater the corresponding adsorption force.

[0077] Understandably, a higher level of road hazard indicates a higher degree of danger in the current location of the vehicle, which means a higher likelihood of the vehicle having to brake suddenly or entering a bumpy road surface. This increases the probability of the vehicle experiencing unstable driving and makes it easier for the charging devices inside the vehicle to slide relative to each other. Consequently, a greater suction force needs to be provided to the charging devices to secure them and prevent them from sliding relative to each other.

[0078] In this embodiment, the expression for the first correspondence can be expressed as follows: (1)

[0079] F1=αRC t Formula (1)

[0080] Where F1 represents the adsorption force; α represents the change in adsorption force within a unit road condition hazard level; RC t This indicates the level of road hazard.

[0081] Understandably, α is a value greater than 0.

[0082] It is also understandable that by substituting the determined current road condition hazard level into formula (1), the corresponding adsorption force can be obtained, and thus the first adsorption force can be obtained.

[0083] In formula (1), α can be obtained through prior testing. The specific test can be designed according to the actual situation, and this application does not limit it here. For example, α can be obtained by testing according to the following process:

[0084] Multiple tests were conducted on the vehicle, with the road condition hazard level as the only variable in each test. Specifically, the vehicle was controlled to operate under different road condition hazard levels in each test. The adsorption force required from the adsorption force supply device to prevent relative slippage of the device to be charged on the onboard charger panel under these road condition hazard levels was recorded. This yielded multiple sets of adsorption force data and corresponding road condition hazard level data. Furthermore, these multiple sets of adsorption force data and road condition hazard level data were linearly fitted to form a straight line. In the linear fitting process, the horizontal axis represents the road condition hazard level, and the vertical axis represents the adsorption force. Finally, the slope of the linearly fitted line can be directly used as α.

[0085] In this embodiment, the first correspondence can also be constructed in other ways, and this application does not limit it here.

[0086] See also Figure 4 Step 2222: Determine a second adsorption force that matches the current tire pressure data.

[0087] In step 2222, a specific implementation method may be: acquiring tire pressure data of the vehicle under stable conditions as initial tire pressure data; determining the current tire pressure change rate of the vehicle based on the initial tire pressure data and the current tire pressure data; acquiring a pre-established second correspondence between the tire pressure change rate and the adsorption force, wherein the tire pressure change rate is positively correlated with the adsorption force; and determining the adsorption force corresponding to the current tire pressure change rate based on the second correspondence, as the second adsorption force.

[0088] In this embodiment, the stable state of the vehicle can be the vehicle being stationary; or it can be the vehicle traveling at a constant speed on a flat road surface, etc.

[0089] In this embodiment, the current tire pressure change rate can be calculated using the following formula (2):

[0090]

[0091] Among them, TP s Indicates the current tire pressure change rate; TP t TP0 indicates the current tire pressure; TP0 indicates the initial tire pressure.

[0092] In this embodiment, it should be noted that in the second correspondence, the greater the tire pressure change rate, the greater the corresponding adsorption force.

[0093] It is understandable that when a vehicle is driving on a bumpy road, the pressure of the tires changes due to the pressure exerted by the bumpy road surface. Therefore, the greater the rate of change in tire pressure, the more bumpy the road surface is, making it easier for the charging devices inside the vehicle to slide relative to each other. This requires a greater suction force to hold the charging devices in place and prevent them from sliding relative to each other.

[0094] In this embodiment, the expression for the second correspondence can be the following formula (3):

[0095] F2=βTP M Formula (3)

[0096] Where F2 represents the adsorption force; β represents the change in adsorption force per unit tire pressure change rate; TP M This indicates the rate of change in tire pressure.

[0097] It is understandable that β in formula (3) is a value greater than 0.

[0098] It is also understandable that by substituting the determined current tire pressure change rate into formula (3), the corresponding adsorption force can be obtained, and thus the second adsorption force can be obtained.

[0099] In formula (3), β can be obtained through prior testing. The specific test can be designed according to the actual situation, and this application does not limit it here. For example, β can be obtained by testing according to the following process:

[0100] Multiple tests were conducted on the vehicle, with the tire pressure change rate as the only variable in each test. This involved controlling the vehicle to operate under different tire pressure change rates in each test. The adsorption force required from the adsorption force supply device to prevent relative slippage of the device to be charged on the onboard charger panel was recorded under these corresponding tire pressure change rate conditions. This yielded multiple sets of adsorption force data and corresponding tire pressure change rate data. Furthermore, these multiple sets of adsorption force data and tire pressure change rate data were linearly fitted to a straight line. In the linear fitting process, the horizontal axis represents the tire pressure change rate, and the vertical axis represents the adsorption force. Finally, the slope of the linearly fitted line can be directly used as β.

[0101] In this embodiment, the second correspondence can also be constructed in other ways, and this application does not limit it here.

[0102] See also Figure 4 Step 2223: Determine the third adsorption force that matches the current acceleration.

[0103] In step 2223, a specific implementation method may be: obtaining a pre-constructed third correspondence between the absolute value of acceleration and the adsorption force, wherein the absolute value of acceleration is positively correlated with the adsorption force; based on the third correspondence, determining the adsorption force corresponding to the absolute value of the current acceleration as the third adsorption force.

[0104] In this embodiment, it should be noted that in the third correspondence, the larger the absolute value of the acceleration, the greater the corresponding adsorption force.

[0105] Understandably, the larger the absolute value of acceleration, the worse the stability of the vehicle's current driving state, making it easier for the devices inside the vehicle to slide relative to each other. This necessitates providing a greater suction force to the devices to fix them in place and prevent them from sliding relative to each other.

[0106] In this embodiment, the expression for the third correspondence can be the following formula (4):

[0107] F3=γ|a| Formula (4)

[0108] Where F3 represents the adsorption force; γ represents the change in adsorption force per unit absolute value of acceleration; and |a| represents the absolute value of acceleration.

[0109] It is understandable that γ in formula (4) is a value greater than 0.

[0110] It is also understandable that by substituting the absolute value of the current acceleration into formula (4), the corresponding adsorption force can be obtained, thus obtaining the third adsorption force.

[0111] In formula (4), γ can be obtained through prior testing. The specific test can be designed according to the actual situation, and this application does not limit it here. For example, γ can be obtained by testing according to the following process:

[0112] Multiple tests were conducted on the vehicle, with acceleration as the only variable in each test. Specifically, the vehicle was controlled to travel under different acceleration conditions in each test. The adsorption force required from the adsorption force supply device to prevent relative slippage of the device to be charged on the onboard charger panel under these corresponding acceleration conditions was recorded. This yielded multiple sets of adsorption force data and corresponding acceleration data. Furthermore, the obtained adsorption force and acceleration data were linearly fitted to a straight line. In the linear fitting process, the horizontal axis represents the absolute value of acceleration, and the vertical axis represents the adsorption force. Finally, the slope of the linearly fitted line can be directly used as γ.

[0113] In this embodiment, the third correspondence can also be constructed in other ways, and this application does not limit it here.

[0114] See also Figure 4 Step 2224: Determine the target adsorption force based on the first adsorption force, the second adsorption force, and the third adsorption force.

[0115] A specific implementation of step 2224 may be to use the sum of the first adsorption force, the second adsorption force, and the third adsorption force as the target adsorption force.

[0116] A further specific implementation of step 2224 is to take the maximum value among the first adsorption force, the second adsorption force, and the third adsorption force as the target adsorption force.

[0117] A further specific implementation of step 2224 is to use the average value of the first adsorption force, the second adsorption force, and the third adsorption force as the target adsorption force.

[0118] Specifically, this application does not limit the specific implementation of step 2224, and it can be designed according to the actual situation.

[0119] In summary, the technical solution in step 220 can determine the target adsorption force for fixing the device to be charged in real time based on the environmental data of the vehicle's current location and the vehicle's current status data collected in real time.

[0120] See also Figure 2 Step 230: Adjust the adsorption force currently provided by the adsorption force supply device according to the target adsorption force.

[0121] In step 230, the specific implementation method is related to the type of adsorption force provided by the adsorption force supply device and the structure of the adsorption force supply device. For example, if the structure of the adsorption force supply device includes an electromagnet and the adsorption force provided is a magnetic attraction force, then the current input to the electromagnet can be adjusted according to the target adsorption force, so that the magnetic attraction force provided by the electromagnet to the device to be charged after the current is adjusted is the target adsorption force.

[0122] In this embodiment, it is understood that if the adsorption force currently provided by the adsorption force supply device is less than the target adsorption force, then the adsorption force provided by the adsorption force supply device should be increased; if the adsorption force currently provided by the adsorption force supply device is greater than the target adsorption force, then the adsorption force provided by the adsorption force supply device should be decreased; if the adsorption force currently provided by the adsorption force supply device is equal to the target adsorption force, then no adjustment is needed. For example, assuming the target adsorption force is determined to be 12N and the adsorption force currently provided by the adsorption force supply device is 10N, then the adsorption force provided by the adsorption force supply device should be increased to 12N.

[0123] In this embodiment, it should be noted that if the adsorption force supply device provides the maximum adsorption force to the device to be charged throughout the entire charging period, although it can ensure that the device to be charged remains relatively stationary on the panel, there are two drawbacks. First, if the user needs to remove the device to be charged during the charging period, the maximum adsorption force will inevitably increase the resistance to the user's removal of the device, thereby reducing the convenience of removing the device and the user's experience with the car charger. Second, the adsorption force supply device always providing the maximum adsorption force will inevitably increase the energy consumed by the adsorption force supply device, thus causing unnecessary energy waste.

[0124] Therefore, the technical solution designed in this application is to adjust the adsorption force provided by the adsorption force supply device in real time according to the environment where the vehicle is currently located and the current status data of the vehicle. This not only avoids the energy waste caused by the adsorption force supply device when the maximum adsorption force is always provided to the device to be charged, but also keeps the device to be charged fixed on the panel during the charging period, preventing the device to be charged from slipping.

[0125] In some embodiments of this application, the provided vehicle charger includes a panel and an adsorption force supply device. The panel holds a device to be charged, and the adsorption force supply device provides adsorption force to the device. During the control of the vehicle charger installed in the vehicle, firstly, environmental data within a preset distance range of the vehicle's current location and the vehicle's current state data are acquired; secondly, based on the environmental data and the current state data, a target adsorption force required to fix the device to be charged is determined; finally, the adsorption force currently provided by the adsorption force supply device is adjusted according to the target adsorption force.

[0126] Therefore, based on the technical solution of this application, during the charging process of the device to be charged while the vehicle is in motion, the target adsorption force required to fix the device to be charged can be determined in real time by acquiring the environmental data of the vehicle's current location and the vehicle's current status data. Thus, the adsorption force provided by the adsorption force supply device can be adjusted in real time according to the target adsorption force, so that the device to be charged is always fixed on the panel during the charging process and does not slide relative to it. This can prevent the device to be charged from slipping and causing damage, and also prevent the device to be charged from flying off the panel and causing injury to the driver and passengers, thereby improving the user experience of the vehicle charger.

[0127] Based on the same inventive concept, this application provides a control device for an on-board charger, which can be used to execute the control method for an on-board charger in the above embodiments of this application. For details not disclosed in the embodiments of this application, please refer to the embodiments of the control method for an on-board charger described above.

[0128] See Figure 5 This diagram illustrates a block diagram of a control device for an on-board charger according to an embodiment of the present application.

[0129] like Figure 5 As shown, a control device 500 for a vehicle charger according to an embodiment of this application includes a panel and an adsorption force supply device. A device to be charged is placed on the panel, and the adsorption force supply device is used to provide adsorption force to the device to be charged. The device includes: an acquisition unit 501, a determination unit 502, and an adjustment unit 503.

[0130] The acquisition unit 501 is used to acquire environmental data within a preset distance range of the vehicle's current location, and to acquire the vehicle's current state data; the determination unit 502 is used to determine the target adsorption force required to fix the device to be charged based on the environmental data and the current state data; the adjustment unit 503 is used to adjust the adsorption force currently provided by the adsorption force supply device according to the target adsorption force.

[0131] In some embodiments of this application, based on the foregoing scheme, the current state data includes the vehicle's current tire pressure data and the current acceleration in the vehicle's driving direction. The determining unit 502 is further configured to: determine the current road condition hazard level of the vehicle's current location based on the environmental data, wherein the current road condition hazard level is used to characterize the degree of road condition hazard at the vehicle's current location, and the current road condition hazard level is positively correlated with the degree of road condition hazard; and determine the target adsorption force based on the current road condition hazard level, the current tire pressure data, and the current acceleration.

[0132] In some embodiments of this application, based on the foregoing scheme, the determining unit 502 is further configured to: determine a first adsorption force matching the current road condition hazard level; determine a second adsorption force matching the current tire pressure data; determine a third adsorption force matching the current acceleration; and determine the target adsorption force based on the first adsorption force, the second adsorption force, and the third adsorption force.

[0133] In some embodiments of this application, based on the foregoing scheme, the determining unit 502 is further configured to: obtain a pre-constructed first correspondence between road condition hazard level and adsorption force, wherein the road condition hazard level is positively correlated with the adsorption force; and based on the first correspondence, determine the adsorption force corresponding to the current road condition hazard level as the first adsorption force.

[0134] In some embodiments of this application, based on the foregoing scheme, the determining unit 502 is further configured to: acquire tire pressure data of the vehicle in a stable state as initial tire pressure data; determine the current tire pressure change rate of the vehicle based on the initial tire pressure data and the current tire pressure data; acquire a pre-established second correspondence between the tire pressure change rate and the adsorption force, wherein the tire pressure change rate is positively correlated with the adsorption force; and determine the adsorption force corresponding to the current tire pressure change rate based on the second correspondence as the second adsorption force.

[0135] In some embodiments of this application, based on the foregoing scheme, the determining unit 502 is further configured to: obtain a pre-constructed third correspondence between the absolute value of acceleration and the adsorption force, wherein the absolute value of acceleration is positively correlated with the adsorption force; and determine the adsorption force corresponding to the absolute value of the current acceleration based on the third correspondence, as the third adsorption force.

[0136] In some embodiments of this application, based on the foregoing scheme, the determining unit 502 is further configured to: take the sum of the first adsorption force, the second adsorption force, and the third adsorption force as the target adsorption force.

[0137] Based on the same inventive concept, embodiments of this application also provide a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operations described above.

[0138] Based on the same inventive concept, this application also provides a vehicle charger.

[0139] See Figure 6The diagram shows a schematic of a vehicle charger according to an embodiment of the present application. The vehicle charger includes one or more memories 604, one or more processors 602, and at least one computer program (computer program instructions) stored in the memory 604 and executable on the processor 602. When the processor 602 executes the computer program, it implements the method described above.

[0140] Among them, Figure 6 In this document, a bus architecture (represented by bus 600) is used. Bus 600 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 602 and memory represented by memory 604. Bus 600 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 605 provides an interface between bus 600 and receiver 601 and transmitter 603. Receiver 601 and transmitter 603 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 602 is responsible for managing bus 600 and general processing, while memory 604 can be used to store data used by processor 602 during operation.

[0141] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0142] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0143] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0144] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing computer program instructions, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0145] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for an on-board charger, characterized in that, The vehicle charger includes a panel and an adsorption force supply device. A device to be charged is placed on the panel, and the adsorption force supply device provides an adsorption force to the device to be charged. The method includes: The system acquires environmental data within a preset distance range of the vehicle's current location, as well as the vehicle's current state data. The current state data includes the vehicle's current tire pressure data and its current acceleration in the vehicle's direction of travel. Based on the environmental data, the current road condition hazard level of the vehicle's current location is determined. The current road condition hazard level is used to characterize the degree of road condition hazard at the vehicle's current location, and the current road condition hazard level is positively correlated with the degree of road condition hazard. The target adhesion force is determined based on the current road condition hazard level, the current tire pressure data, and the current acceleration. The adsorption force currently provided by the adsorption force supply device is adjusted according to the target adsorption force.

2. The method according to claim 1, characterized in that, Determining the target adhesion force based on the current road condition hazard level, the current tire pressure data, and the current acceleration includes: Determine the first adsorption force that matches the current road condition hazard level; Determine a second adsorption force that matches the current tire pressure data; Determine a third adsorption force that matches the current acceleration; The target adsorption force is determined based on the first adsorption force, the second adsorption force, and the third adsorption force.

3. The method according to claim 2, characterized in that, Determining a first adsorption force that matches the current road condition hazard level includes: Obtain the first correspondence between the pre-constructed road condition hazard level and the adsorption force, where the road condition hazard level and the adsorption force are positively correlated; Based on the first correspondence, the adsorption force corresponding to the current road condition hazard level is determined and used as the first adsorption force.

4. The method according to claim 2, characterized in that, The determination of the second adsorption force that matches the current tire pressure data includes: Obtain the tire pressure data of the vehicle under stable conditions as the initial tire pressure data; Based on the initial tire pressure data and the current tire pressure data, determine the current tire pressure change rate of the vehicle; Obtain a pre-established second correspondence between tire pressure change rate and adsorption force, wherein the tire pressure change rate is positively correlated with the adsorption force; Based on the second correspondence, the adsorption force corresponding to the current tire pressure change rate is determined as the second adsorption force.

5. The method according to claim 2, characterized in that, The determination of the third adsorption force matching the current acceleration includes: Obtain a pre-constructed third correspondence between the absolute value of acceleration and the adsorption force, wherein the absolute value of acceleration is positively correlated with the adsorption force; Based on the third correspondence, the adsorption force corresponding to the absolute value of the current acceleration is determined as the third adsorption force.

6. The method according to claim 2, characterized in that, Determining the target adsorption force based on the first adsorption force, the second adsorption force, and the third adsorption force includes: The sum of the first adsorption force, the second adsorption force, and the third adsorption force is taken as the target adsorption force.

7. A control device for an on-board charger, characterized in that, The vehicle charger includes a panel and an adsorption force supply device. A device to be charged is placed on the panel, and the adsorption force supply device provides adsorption force to the device to be charged. The device includes: The acquisition unit is used to acquire environmental data within a preset distance range of the vehicle's current position, and to acquire the vehicle's current state data; the current state data includes the vehicle's current tire pressure data and the current acceleration in the vehicle's direction of travel. The determining unit is configured to determine the current road condition hazard level of the vehicle's current location based on the environmental data. The current road condition hazard level is used to characterize the degree of road condition hazard at the vehicle's current location, and the current road condition hazard level is positively correlated with the degree of road condition hazard. Based on the current road condition hazard level, the current tire pressure data, and the current acceleration, the unit determines the target adhesion force. An adjustment unit is used to adjust the adsorption force currently provided by the adsorption force supply device according to the target adsorption force.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations performed by the method as described in any one of claims 1 to 6.

9. A vehicle charger, characterized in that, The method includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to implement the method as claimed in any one of claims 1 to 6.

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