Charging control method, vehicle controller, and vehicle

Abstract

Provided are a charging control method, a vehicle controller, and a vehicle, which are applied to the field of vehicles. When a terminal is in contact with a wireless charging module of a vehicle and it is determined that the terminal supports a wireless charging function, the vehicle controller transmits at least one communication signal; and if it is determined, on the basis of a response signal for the at least one communication signal, that there is a physical communication card between the terminal and the wireless charging module, the vehicle controller controls the wireless charging module to terminate a charging process.

Description

Charging control method, vehicle controller and vehicle

[0001] Related applications

[0002] The present application claims priority from Chinese Patent Application No. 202410696374.5, filed on May 30, 2024, and entitled "Charging control method, vehicle controller and vehicle". TECHNICAL FIELD

[0003] The present application relates to the field of vehicles, and in particular to a charging control method, a vehicle controller and a vehicle. BACKGROUND

[0004] With the development of vehicle technology and the popularity of electronic devices, a wireless charging module can be provided in a vehicle to perform wireless charging on a terminal supporting wireless charging.

[0005] In related technologies, during the process of charging the terminal by the wireless charging module, if there is an entity communication card between the terminal and the wireless charging module, for example, the entity communication card can be a near field communication (NFC) entity card, the charging current transmitted by the wireless charging module to the terminal can break the coil in the entity communication card, resulting in the risk of damage to the entity communication card. SUMMARY

[0006] The present application provides a charging control method, a vehicle controller and a vehicle, which can solve the problem that in related technologies, the coil of an entity communication card between a terminal and a wireless charging module is broken by the charging current of the wireless charging module, resulting in the risk of damage to the entity communication card. The technical solution is as follows:

[0007] In one aspect, a charging control method is provided, applied to a vehicle, the method comprising:

[0008] In a case where the terminal is in contact with the wireless charging module of the vehicle and it is determined that the terminal supports wireless charging function, at least one communication signal is transmitted;

[0009] If it is determined, based on a response signal to the at least one communication signal, that there is an entity communication card between the terminal and the wireless charging module, the wireless charging module is controlled to terminate the charging process.

[0010] Optionally, the communication signal comprises a first communication signal, and the first communication signal is a card searching signal, the response signal comprises a first response signal, and the terminal is provided with a virtual communication card; the method further comprises:

[0011] In a case where two first response signals to each target first communication signal in the at least one target first communication signal are received, the difference between the frame delay times corresponding to the two first response signals is determined.

[0012] determining, based on the at least one difference value, whether the terminal and the wireless charging module exist the physical communication card.

[0013] Optionally, the determining, based on the at least one difference value, whether the terminal and the wireless charging module exist the physical communication card, comprises:

[0014] determining a target feature value based on the at least one difference value;

[0015] if the target feature value is within a preset numerical range, determining that the terminal and the wireless charging module exist the physical communication card;

[0016] if the target feature value is out of the preset numerical range, determining that the terminal and the wireless charging module do not exist the physical communication card.

[0017] Optionally, the preset numerical range is determined based on a plurality of sample difference values, each sample difference value being a difference value between a first sample frame delay time and a second sample frame delay time corresponding to the first sample frame delay time.

[0018] wherein the first sample frame delay time is a sample frame delay time of a sample virtual communication card of a sample terminal responding to a sample communication signal sent by a sample vehicle in a case that a sample physical communication card exists between the sample terminal and a sample wireless charging module of the sample vehicle, and the second sample frame delay time is a sample frame delay time of the sample physical communication card responding to the sample communication signal.

[0019] Optionally, a lower limit value of the preset numerical range is a minimum value of absolute values of the plurality of sample difference values, and an upper limit value of the preset numerical range is a maximum value of the absolute values of the plurality of sample difference values.

[0020] Optionally, the communication signal comprises a second communication signal, the second communication signal comprises a plurality of continuous first sub-pulse signals, and the plurality of continuous first sub-pulse signals monotonically vary in amplitude; the response signal comprises a second response signal; and the method further comprises:

[0021] receiving at least one second response signal for each second communication signal, and determining a variation trend of each second response signal;

[0022] determining, based on the at least one variation trend, whether the terminal and the wireless charging module exist the physical communication card.

[0023] Optionally, the communication signal further comprises a first communication signal, the first communication signal is a card searching signal, and the response signal further comprises a first response signal; and the receiving at least one second response signal for each second communication signal comprises:

[0024] In a case where a number of the first response signals for each of the at least one first communication signal is less than two, receiving at least one second response signal for each second communication signal.

[0025] Optionally, the change trend is represented by a slope; and determining, based on the at least one change trend, whether the physical communication card exists between the terminal and the wireless charging module comprises:

[0026] If the target number exists in the at least one slope, it is determined that the physical communication card is identified.

[0027] If the target number does not exist in the at least one slope, it is determined that the physical communication card is not identified.

[0028] If the target number exists in the at least one slope, it is determined that the physical communication card is identified.

[0029] Optionally, each second response signal comprises a plurality of second sub-pulse signals; and determining the change trend of the second response signal comprises:

[0030] Determining a voltage of each second sub-pulse signal in the second response signal and a target parameter, the target parameter comprising a phase or an impedance.

[0031] Linearly fitting the plurality of target parameters and the plurality of voltages to obtain a change curve.

[0032] Determining a slope of the change curve as the change trend of the second response signal.

[0033] Optionally, the virtual communication card is an NFC virtual card, and the physical communication card is an NFC physical card or a radio frequency identification (RFID) physical card.

[0034] In another aspect, a computer readable storage medium is provided, and the computer readable storage medium stores computer instructions, and the computer instructions are executed by a processor to implement the charging control method.

[0035] In yet another aspect, a vehicle controller is provided, and the vehicle controller comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the charging control method when executing the computer program.

[0036] In still another aspect, a vehicle is provided, and the vehicle comprises the vehicle controller.

[0037] To sum up, the embodiment of the present application provides a charging control method, a vehicle controller and a vehicle. In the method, the vehicle controller transmits at least one communication signal when the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function. If it is determined that there is an entity communication card between the terminal and the wireless charging module based on a response signal to the at least one communication signal, the vehicle controller controls the wireless charging module to terminate the charging process before the wireless charging module sends a charging current to the terminal.

[0038] Compared with the related art, the embodiment of the present application can detect whether there is an entity communication card between the terminal and the wireless charging module before the wireless charging module sends a charging current to the terminal. If it is determined that there is an entity communication card between the terminal and the wireless charging module, the wireless charging module can be controlled to terminate the charging process. Thus, the risk that the coil in the entity communication card is broken by the charging current and the entity communication card is damaged can be effectively avoided.

[0039] Additional aspects and advantages of the present application will be described in the following description and will be apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 is a flowchart of a charging control method provided by an embodiment of the present application;

[0041] Fig. 2 is a flowchart of another charging control method provided by an embodiment of the present application;

[0042] Fig. 3 is a schematic diagram of voltage and phase variation provided by an embodiment of the present application;

[0043] Fig. 4 is a schematic diagram of a structure of a vehicle controller provided by an embodiment of the present application.

[0044] Fig. 5 is a block diagram of a charging control device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0045] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar elements or elements having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0046] Fig. 1 is a flowchart of a charging control method provided by an embodiment of the present application, which is applied to a vehicle. Referring to Fig. 1, the method comprises:

[0047] In step 101, at least one communication signal is transmitted when the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function.

[0048] The vehicle controller transmits at least one communication signal before the wireless charging module sends a charging current to the terminal, if the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function.

[0049] If it is determined that there is a physical communication card between the terminal and the wireless charging module based on the response signal to the at least one communication signal, the vehicle controller controls the wireless charging module to terminate the charging process.

[0050] If it is determined that there is a physical communication card between the terminal and the wireless charging module based on the response signal to the at least one communication signal after the vehicle controller transmits the at least one communication signal, the vehicle controller controls the wireless charging module to terminate the charging process.

[0051] In summary, the embodiment of the present application provides a charging control method. The vehicle controller transmits at least one communication signal before the wireless charging module sends a charging current to the terminal, if the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function. If it is determined that there is a physical communication card between the terminal and the wireless charging module based on the response signal to the at least one communication signal, the vehicle controller controls the wireless charging module to terminate the charging process.

[0052] Compared with the related art, the embodiment of the present application can detect whether there is a physical communication card between the terminal and the wireless charging module before the wireless charging module sends a charging current to the terminal. If it is determined that there is a physical communication card between the terminal and the wireless charging module, the vehicle controller controls the wireless charging module to terminate the charging process. Thus, the risk of the coil in the physical communication card being broken by the charging current and causing damage to the physical communication card can be effectively avoided.

[0053] FIG. 2 is a flowchart of another charging control method provided by the embodiment of the present application, which can be applied to a vehicle. Referring to FIG. 2, the method can include:

[0054] In step 201, at least one first communication signal is transmitted if the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function.

[0055] The vehicle controller transmits at least one first communication signal if the terminal contacts the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function. The terminal is provided with a virtual communication card, which is optionally an NFC virtual card. The terminal can be a mobile phone, for example.

[0056] The vehicle can also be provided with an NFC module, and the vehicle controller can transmit at least one first communication signal through the NFC module. The first communication signal can be a card search signal, which can be a digital signal. For example, the digital signal can be an NFC signal, and the frequency of the first communication signal can be 13.56 MHz.

[0057] In the implementation of the present application, the wireless charging module and the NFC module can be integrated on the same shielding material, with the wireless charging coil in the middle and the NFC coil on the periphery.

[0058] It can be understood that the process of charging the terminal by the wireless charging module can include a selection phase, an activation phase, an identification and configuration phase, and a power transfer phase.

[0059] The wireless charging module is configured to detect whether a terminal contacts the wireless charging module in the selection phase. In the selection phase, the wireless charging module can periodically transmit an analog signal of a fixed frequency. If the wireless charging module can receive a response signal to the analog signal, it can be determined that a terminal contacts the wireless charging module. The process of periodically transmitting an analog signal of a fixed frequency by the wireless charging module can also be referred to as "Analog Ping".

[0060] After determining that the terminal contacts the wireless charging module, the process of charging the terminal by the wireless charging module enters the activation phase. The wireless charging module is configured to detect whether the terminal supports wireless charging function in the activation phase. In the activation phase, the wireless charging module can send a digital signal of a preset energy to the terminal. If a signal strength indication packet is received in response to the digital signal, the power signal can be maintained, and it can be determined that the terminal supports wireless charging function. The process of sending a digital signal of a preset energy by the wireless charging module to the terminal can also be referred to as "Digital Ping".

[0061] The process of charging the terminal by the wireless charging module can then enter the identification and configuration phase. In the identification and configuration phase, the wireless charging module can authenticate and authorize the terminal. After the authentication and authorization of the terminal are passed, the process of charging the terminal by the wireless charging module can enter the power transfer phase, in which the wireless charging module can send a charging current to the terminal to charge the terminal.

[0062] In the embodiment of the present application, during the process of charging the terminal by the wireless charging module, the vehicle controller can detect whether there is a physical communication card between the terminal and the wireless charging module before the identification and configuration stage, in the case that the terminal supports the wireless charging function. It can also detect whether there is a physical communication card between the terminal and the wireless charging module before the power transmission stage, after the identification and configuration stage.

[0063] Step 202, judging whether two first response signals for each target first communication signal in the at least one target first communication signal are received.

[0064] After the vehicle controller transmits the at least one first communication signal, it can judge whether two first response signals for each target first communication signal in the at least one target first communication signal are received. If the vehicle controller receives two first response signals for each target first communication signal in the at least one target first communication signal, it can determine that there are two communication cards, and thus can execute step 203. If the vehicle controller receives a number of first response signals for each first communication signal in the at least one first communication signal less than two, it can determine that it cannot judge whether there are two communication cards, and thus can execute step 206.

[0065] Optionally, the vehicle controller can receive the first response signal through the NFC module.

[0066] It can be understood that, since the first communication signal is a card search signal, and the card search signal is a digital signal, in the case that the quality of the digital signal is poor, the vehicle controller can not receive one first response signal for each target first communication signal in the at least one target first communication signal returned by the virtual communication card in the terminal. Even if there is a physical communication card, it can also cause the vehicle controller to not receive one first response signal for each target first communication signal in the at least one target first communication signal returned by the physical communication card.

[0067] In addition, if the physical communication card is an RFID physical card, and the working frequency of the RFID physical card is different from the frequency of the first communication signal (for example, the working frequency of the RFID physical card is 125 kHz, and the frequency of the first communication signal is 13.56 MHz), then the RFID physical card will not respond to the first communication signal. If the physical communication card is an RFID physical card, and the working frequency of the RFID physical card is the same as the frequency of the first communication signal (for example, the working frequency of the RFID physical card and the frequency of the first communication signal are both 13.56 MHz), then the RFID physical card will respond to the first communication signal, and thus the vehicle controller can receive the first response signal returned by the RFID physical card.

[0068] Step 203, determining a difference value of frame delay time corresponding to the two first response signals.

[0069] The vehicle controller can determine a difference value of frame delay time corresponding to the two first response signals in case that the two first response signals are received for each of the at least one target first communication signal.

[0070] For each first communication signal, the vehicle controller can record a sending time of the first communication signal. The vehicle controller can record a receiving time of each first response signal in case that the first response signal is received. For each first response signal, the vehicle controller can determine a difference value of the receiving time of the first response signal and the sending time of the target first communication signal corresponding to the first response signal as the frame delay time corresponding to the first response signal.

[0071] The identification of each first communication signal is carried in the first communication signal, and the first response signal of each first communication signal received by the vehicle controller also carries the identification. If the identification of the first response signal is the same as the identification of the first communication signal, it can be determined that the first response signal is the response signal for the first communication signal, i.e. the first response signal corresponds to the first communication signal. If the identification of the first response signal is different from the identification of the first communication signal, it can be determined that the first response signal is not the response signal for the first communication signal.

[0072] Step 204, determining a target characteristic value based on the at least one difference value.

[0073] After the vehicle controller determines the difference value of frame delay time corresponding to the two first response signals, the vehicle controller can determine a target characteristic value based on the at least one difference value.

[0074] Optionally, if the at least one difference value is multiple, the vehicle controller can determine any one of the multiple difference values as the target characteristic value, or can determine the average value of the multiple difference values as the target characteristic value. If the at least one difference value is one, the vehicle controller can determine the one difference value as the target characteristic value.

[0075] It should be noted that in case that the NFC module works normally, and the communication card feeding back the two first response signals also works normally, if the at least one difference value is multiple, the multiple difference values can be the same.

[0076] Step 205, judging whether the target characteristic value is located in a preset numerical range.

[0077] After determining the target feature value based on at least one difference, the vehicle controller can determine whether the target feature value is within a preset value range. If the target feature value is within the preset value range, it can be determined that there is a physical communication card between the terminal and the wireless charging module, and therefore step 209 can be executed. If the target feature value is outside the preset value range, it can be determined that there is no physical communication card between the terminal and the wireless charging module, and therefore step 210 can be executed. The vehicle controller can pre-store the preset value range.

[0078] Optionally, the preset numerical range is determined based on multiple sample differences, where each sample difference is the difference between the first sample frame delay time and the corresponding second sample frame delay time. The first sample frame delay time is the sample frame delay time in which the sample virtual communication card of the sample terminal responds to the sample communication signal sent by the sample vehicle, assuming a physical communication card exists between the sample terminal and the sample wireless charging module of the sample vehicle. The second sample frame delay time is the sample frame delay time in which the physical communication card responds to the sample communication signal.

[0079] This can be achieved by using multiple different sample terminals and one sample vehicle to determine multiple sample differences, where the number of sample differences is the same as the number of sample terminals. Alternatively, multiple different sample vehicles and one sample terminal can be used to determine multiple sample differences, where the number of sample differences is the same as the number of sample terminals. Another approach is to use multiple different sample vehicles and multiple different sample terminals to determine multiple sample differences.

[0080] The following explanation uses the example of determining multiple sample differences using multiple different sample terminals and one sample vehicle. Before step 201, the developer can acquire multiple sample terminals. For each sample terminal, the developer can bring it into contact with the sample wireless charging module of the sample vehicle and place a sample physical communication card between the sample terminal and the sample wireless charging module. The sample terminal is equipped with a sample virtual communication card, which can be an NFC virtual card. Then, when the sample wireless charging module determines that the sample terminal supports wireless charging (i.e., before the sample wireless charging module provides charging current to the sample terminal), the sample communication module in the sample vehicle can transmit a sample communication signal and receive a first sample response signal returned by the sample terminal for the sample communication signal, and a second sample response signal returned by the sample physical communication card for the sample communication signal. This allows the acquisition of the first and second sample response signals corresponding to each of the multiple sample terminals.

[0081] The sample physical communication card can be a sample NFC physical card or a sample RFID physical card, the sample communication module can be an NFC module, the sample communication signal can be a digital signal, and the frequency of the sample communication signal can be 13.56 MHz.

[0082] It should be noted that the physical communication cards placed between different sample terminals and sample wireless charging modules can be the same or different. Furthermore, before the sample wireless charging module provides charging current to the sample terminal, the number of sample communication signals transmitted by the sample communication module in the sample vehicle can be one or multiple; developers can set this arbitrarily according to actual conditions, and this embodiment of the invention does not limit this.

[0083] Optionally, for each sample terminal, the sample communication signal transmitted by the sample communication module carries an identifier, and the first sample response signal and the second sample response signal received in response to the sample communication signal also carry identifiers. Furthermore, the sample vehicle controller in the sample vehicle can store the identifier of the sample terminal, the transmission time of the sample communication signal, the reception time of the first sample response signal in response to the sample communication signal, and the reception time of the second sample response signal in response to the sample communication signal.

[0084] For each sample terminal, if the sample communication module in the sample vehicle transmits multiple sample communication signals before the sample wireless charging module provides charging current to the sample terminal, the sample vehicle controller can randomly store the transmission time of one sample communication signal, the reception time of the first sample response signal for that sample communication signal, and the reception time of the second sample response signal for that sample communication signal.

[0085] Each sample communication signal has the same identifier as the corresponding first sample response signal and the same identifier as the corresponding second sample response signal.

[0086] In one optional implementation, for each of the multiple sample terminals, the sample vehicle controller in the sample vehicle can send the identifier of the sample terminal, the transmission time of the sample communication signal corresponding to the identifier of the sample terminal, the reception time of the first sample response signal corresponding to the identifier of the sample terminal, and the reception time of the second sample response signal corresponding to the identifier of the sample terminal to the vehicle controller, so that the vehicle controller can determine a preset value range based on the transmission time of the sample communication signal corresponding to the identifier of each sample terminal, the reception time of the first sample response signal corresponding to the identifier of each sample terminal, and the reception time of the second sample response signal corresponding to the identifier of each sample terminal.

[0087] In another optional implementation, for each of the multiple sample terminals, the sample vehicle controller can determine the first sample frame delay time of the sample virtual communication card responding to the sample communication signal in that sample terminal, and the second sample frame delay time of the sample physical communication card corresponding to that sample terminal responding to the sample communication signal, thereby obtaining the first sample frame delay time and the second sample frame delay time corresponding to each sample terminal. The controller then sends the identifier of each sample terminal, along with the corresponding first and second sample frame delay times, to the vehicle controller, enabling the vehicle controller to determine a preset numerical range based on the first and second sample frame delay times corresponding to the identifiers of each sample terminal.

[0088] Optionally, for each sample terminal, the sample vehicle controller can determine the difference between the reception time of the first sample response signal corresponding to the identifier of the sample terminal and the transmission time of the sample communication signal corresponding to the identifier of the sample terminal as the first sample frame delay time corresponding to the identifier of the sample terminal, and determine the difference between the reception time of the second sample response signal corresponding to the identifier of the sample terminal and the transmission time of the sample communication signal corresponding to the identifier of the sample terminal as the second sample frame delay time.

[0089] Optionally, the process by which the vehicle controller determines the preset numerical range may include the following steps A1 to A2:

[0090] Step A1: For each of the multiple sample terminals, if there is a sample physical communication card between the sample terminal and the sample wireless charging module of the sample vehicle, obtain the first sample frame delay time of the sample virtual communication card of the sample terminal responding to the sample communication signal sent by the sample vehicle, and the second sample frame delay time of the sample physical communication card responding to the sample communication signal.

[0091] For each of the multiple sample terminals, when there is a sample physical communication card between the sample terminal and the sample wireless charging module of the sample vehicle, the vehicle controller obtains the first sample frame delay time of the sample virtual communication card of the sample terminal responding to the sample communication signal sent by the sample vehicle, and the second sample frame delay time of the sample physical communication card responding to the sample communication signal.

[0092] If the first sample frame delay time and the second sample frame delay time are sent by the sample vehicle controller, the controller can obtain the first sample frame delay time and the second sample frame delay time corresponding to the identifier of the sample terminal based on the identifier of the sample terminal.

[0093] In this embodiment of the invention, if the sample vehicle controller sends the identifier of each sample terminal, the transmission time of the sample communication signal corresponding to the identifier of each sample terminal, the reception time of the first sample response signal corresponding to the identifier of each sample terminal, and the reception time of the second sample response signal corresponding to the identifier of each sample terminal, then for each sample terminal, the vehicle controller can determine the first sample frame delay time and the second sample frame delay time based on the transmission time of the sample communication signal corresponding to the identifier of that sample terminal, the reception time of the first sample response signal corresponding to the identifier of that sample terminal, and the reception time of the second sample response signal corresponding to the identifier of that sample terminal.

[0094] The process by which the vehicle controller determines the delay time of the first sample frame and the delay time of the second sample frame can refer to the process described above for determining the delay time of the first sample frame and the delay time of the second sample frame by the vehicle controller. This embodiment of the invention will not be repeated here.

[0095] Step A2: Determine the preset numerical range based on the differences between multiple samples.

[0096] For each of the multiple sample terminals, when a physical sample communication card exists between the sample terminal and the sample wireless charging module of the sample vehicle, the vehicle controller, after obtaining the first sample frame delay time of the sample virtual communication card responding to the sample communication signal sent by the sample vehicle, and the second sample frame delay time of the physical sample communication card responding to the sample communication signal, can determine a preset value range based on multiple sample differences. Each sample difference is the difference between the first sample frame delay time and the corresponding second sample frame delay time. The first sample frame delay time and the corresponding second sample frame delay time are obtained using the same sample terminal identifier.

[0097] Optionally, the lower limit of the preset numerical range is the minimum absolute value of the differences between multiple samples, and the upper limit of the preset numerical range is the maximum absolute value of the differences between multiple samples.

[0098] In this embodiment of the invention, the sample vehicle controller may also perform the above steps A1 to A2 to determine the preset value range, and may send the preset value range to the vehicle controller.

[0099] Step 206: Transmit at least one second communication signal.

[0100] If the number of first response signals received for each of the at least one first communication signal is less than two, the vehicle controller may transmit at least one second communication signal.

[0101] Each second communication signal may include multiple consecutive first sub-pulse signals, the amplitude of which changes monotonically. This monotonous change in amplitude may involve either a sequential increase or a sequential decrease in amplitude. The absolute value of the difference between the amplitudes of any two adjacent first sub-pulse signals can be a preset value, which can be pre-stored in the vehicle controller. The amplitude of the first sub-pulse signal can be a voltage. The vehicle controller can transmit at least one second communication signal via an NFC module.

[0102] For example, the vehicle controller can transmit four second communication signals and up to 15 consecutive first sub-pulse signals. The amplitude of the first first sub-pulse signal in the multiple consecutive first sub-pulse signals can be 1.5 volts (V), the absolute value of the difference between the amplitudes of any two adjacent first sub-pulse signals can be 0.2V, and the amplitude of the last first sub-pulse signal in the multiple consecutive first sub-pulse signals can be 4.3V.

[0103] In this embodiment of the invention, the number of second communication signals transmitted by the vehicle controller can be determined based on the actual situation, and this solution does not impose a specific limitation.

[0104] Step 207: Receive at least one second response signal for each second communication signal, and determine the changing trend of each second response signal.

[0105] After the vehicle controller transmits at least one second communication signal, it can receive at least one second response signal for each second communication signal and determine the changing trend of each second response signal. Optionally, this changing trend can be characterized by a slope. The vehicle controller can receive at least one second response signal for each second communication signal via an NFC module.

[0106] Optionally, each second response signal may include multiple second sub-pulse signals. The process of determining the changing trend of the second response signal may include steps B1 to B3:

[0107] Step B1: Determine the voltage and target parameters of each second sub-pulse signal in the second response signal.

[0108] The vehicle controller can determine the voltage and target parameters of each second sub-pulse signal in the second response signal. The target parameters may include phase or impedance, and there is a one-to-one correspondence between the voltage and the target parameter of each second sub-pulse signal.

[0109] The vehicle controller can obtain the "I&Q" parameters of each second sub-pulse signal through the serial peripheral interface (SPI) bus. The I parameter can be the in-phase component of the second sub-pulse signal and the amplitude of the second sub-pulse signal. The Q parameter can be the quadrature component of the second sub-pulse signal.

[0110] The vehicle controller can determine the I-parameter of each second sub-pulse signal as the voltage of that second sub-pulse signal, and the ratio of the voltage to a preset current as the impedance of that second sub-pulse signal. The Q-parameter of each second sub-pulse signal is determined as its phase. The preset current can be the operating current of the NFC chip in the NFC module.

[0111] Step B2: Perform linear fitting on multiple target parameters and multiple voltages to obtain the variation curves.

[0112] After determining the voltage and target parameters of each second sub-pulse signal in the second response signal, the vehicle controller performs linear fitting on multiple target parameters and multiple voltages to obtain a variation curve. This variation curve represents the target parameters changing with voltage.

[0113] Taking a second communication signal sent by the vehicle controller as an example, the amplitude of the first first sub-pulse signal in the multiple consecutive first sub-pulse signals of this second communication signal is 1.5V, the absolute value of the difference between the amplitudes of any two consecutive first sub-pulse signals is 0.2V, and the amplitude of the last first sub-pulse signal in the multiple consecutive first sub-pulse signals is 4.3V. The vehicle controller receives two second response signals in response to this second communication signal. By executing steps B1 to B2 above, the vehicle controller can obtain the voltage and phase change diagram shown in Figure 3. Referring to Figure 3, the vertical axis of this change diagram represents the phase in degrees (°), and the horizontal axis represents the voltage in millivolts (mV). This change diagram may include a first broken line 31, a second broken line 32, a first change curve 33, and a second change curve 34.

[0114] The diagram shows the relationship between the voltage and phase of one of the two second response signals, with the first broken line 31 representing the relationship between the voltage and phase of the other second response signal. The first variation curve 33 is a curve obtained by linearly fitting the voltage and phase of one second response signal, and its expression can be y = 0.0709x + 12.371. The second variation curve 34 is a curve obtained by linearly fitting the voltage and phase of the other second response signal, and its expression can be y = -0.1922x + 10.345.

[0115] Step B3: Determine the slope of the change curve as the trend of the second response signal.

[0116] The vehicle controller performs linear fitting on multiple target parameters and multiple voltages to obtain the change curve. The slope of the change curve can then be determined as the trend of the second response signal.

[0117] For example, referring to Figure 3, the slope of the first curve 33 can be 0.0709, which is a positive number. The slope of the second curve 34 can be -0.1922, which is a negative number.

[0118] Step 208: Determine whether there is a target number in at least one slope.

[0119] The vehicle controller receives at least one second response signal for each second communication signal and, after determining the changing trend of each second response signal, can determine whether a target number exists in at least one slope. If the vehicle controller determines that a target number exists in at least one slope, it can determine that a physical communication card exists between the wireless charging module and the terminal, and therefore can execute step 209. If it determines that no target number exists in the slope, it can determine that no physical communication card exists between the terminal and the wireless charging module, and therefore can execute step 210. This achieves the determination of whether a physical communication card exists between the terminal and the wireless charging module based on at least one changing trend.

[0120] Specifically, if the amplitude of multiple consecutive first sub-pulse signals increases monotonically, the target number is negative; if the amplitude of multiple consecutive first sub-pulse signals decreases monotonically, the target number is positive.

[0121] When the amplitude of multiple consecutive first sub-pulse signals increases monotonically and the target number is negative, referring to Figure 3, the vehicle controller can determine that at least one slope is negative, that is, the slope of the second change curve 34 is negative.

[0122] In this embodiment of the invention, if there are multiple second communication signals, the vehicle controller can receive multiple second response signals in response to the multiple second communication signals, determine the changing trend of each of the multiple second response signals, and determine whether there is a physical communication card between the terminal and the wireless charging module based on the changing trends of the multiple second response signals. Since multiple changing trends can be determined, the accuracy of physical communication card identification can be improved.

[0123] If it is determined that the target number is not present in at least one slope, then the existence of a virtual communication card can be confirmed. Furthermore, the vehicle controller can distinguish between virtual and physical communication cards based on the slope.

[0124] Step 209: Control the wireless charging module to terminate the charging process.

[0125] If the vehicle controller determines that the target feature value is within the preset value range, it can determine that there is a physical communication card between the terminal and the wireless charging module, and therefore can control the wireless charging module to terminate the charging process.

[0126] If the number of first response signals received for each of the at least one first communication signals is less than two, and the vehicle controller determines that there is a target number in at least one slope, it can determine that there is a physical communication card between the terminal and the wireless charging module, and therefore can control the wireless charging module to terminate the charging process.

[0127] Step 210: Control the wireless charging module to charge the terminal.

[0128] If the vehicle controller determines that the target feature value is outside the preset value range, it can determine that there is no physical communication card between the terminal and the wireless charging module, and therefore can control the wireless charging module to charge the terminal.

[0129] If the number of first response signals received for each of the at least one first communication signals is less than two, and the vehicle controller determines that there is no target number in at least one slope, then it can determine that there is no physical communication card between the terminal and the wireless charging module, and therefore can control the wireless charging module to charge the terminal.

[0130] In this embodiment of the invention, the vehicle controller determines the difference between the frame delay times corresponding to the two first response signals, and determines whether a physical communication card exists between the terminal and the wireless charging module based on at least one difference. If a physical communication card exists, the controller controls the wireless charging module to terminate the charging process. Therefore, the recognition rate of the physical communication card is effectively improved without increasing the card detection time.

[0131] If the number of first response signals received for each of the at least one first communication signal is less than two, at least one second communication signal can be transmitted, and the presence of a physical communication card between the terminal and the wireless charging module can be determined based on the changing trend of the second response signals of each second communication signal, thereby further improving the recognition rate of the physical communication card.

[0132] The vehicle controller obtains a variation curve by linearly fitting the voltage of each second sub-pulse signal in the second response signal to the target parameter. The slope of the variation curve is determined as the variation trend of the second response signal. Based on this variation trend, the controller determines whether a physical communication card exists between the terminal and the wireless charging module. If a physical communication card exists, the controller controls the wireless charging module to terminate the charging process. This improves the recognition rate of the physical communication card.

[0133] In this embodiment of the invention, when it is determined that a physical communication card exists between the terminal and the wireless charging module, the wireless charging module is controlled to terminate the charging process. In practical use cases, this can be referred to as a "card protection" function. In a real-world scenario, for example, when the wireless charging module wirelessly charges a mobile phone (i.e., the terminal), an NFC physical card key is sandwiched between the wireless charging module and the mobile phone. The method provided in this embodiment of the invention can prevent the coil in the NFC physical card key from being broken down by the charging current, thereby preventing the NFC physical card key from being damaged.

[0134] In summary, the embodiments of the present invention provide a charging control method. In this method, when the vehicle controller contacts the wireless charging module of the vehicle and determines that the terminal supports the wireless charging function, that is, before the wireless charging module sends a charging current to the terminal, the vehicle controller transmits at least one communication signal. If, based on the response signal to the at least one communication signal, it is determined that there is a physical communication card between the terminal and the wireless charging module, the wireless charging module is controlled to terminate the charging process.

[0135] Compared to related technologies, this invention can detect the presence of a physical communication card between the terminal and the wireless charging module before the wireless charging module sends charging current to the terminal. If a physical communication card is detected between the terminal and the wireless charging module, the wireless charging module can be controlled to terminate the charging process. This effectively avoids the risk of the coil in the physical communication card being damaged by the charging current, thus preventing damage to the physical communication card.

[0136] It should be noted that the order of the steps in the charging control method provided in this embodiment can be adjusted appropriately, and steps can also be deleted as needed. For example, steps 206 to 208 can be deleted as needed. That is, in this embodiment, only at least one first communication signal can be sent, and the presence of a physical communication card between the terminal and the wireless charging module can be determined based on the first response signal to the first communication signal.

[0137] Alternatively, steps 201 to 205 can be deleted as needed. That is, in this embodiment of the invention, only at least one second communication signal can be sent, and the existence of a physical communication card between the terminal and the wireless charging module can be determined based on the second response signal to the second communication signal.

[0138] Alternatively, steps 201 to 205 can be performed after step 206. That is, in this embodiment of the invention, at least one second communication signal can be sent first, and a physical communication card can be determined between the terminal and the wireless charging module based on the second response signal to the second communication signal.

[0139] If no second response signal is received for each of the second communication signals, steps 201 to 205 can be executed again. Alternatively, to further ensure the accuracy of the detection, regardless of whether it is determined based on the second response signal for the second communication signal that a physical communication card exists between the terminal and the wireless charging module, steps 201 to 205 can be executed again, and if it is determined based on the second response signal for the second communication signal that a physical communication card exists between the terminal and the wireless charging module, and / or, based on the first response signal for the first communication signal that a physical communication card exists between the terminal and the wireless charging module, step 209 can be executed.

[0140] If it is determined, based on the second response signal to the second communication signal, that there is no physical communication card between the terminal and the wireless charging module, and based on the first response signal to the first communication signal, that there is no physical communication card between the terminal and the wireless charging module, then step 210 is executed.

[0141] This invention provides a computer-readable storage medium storing computer instructions, which, when executed by a processor, implement the charging control method shown in the above embodiments. For example, the charging control method shown in FIG1 or FIG2.

[0142] Figure 4 is a schematic diagram of a vehicle controller provided in an embodiment of the present invention. As shown in Figure 4, the vehicle controller 40 may include a memory 401, a processor 402, and a computer program stored in the memory and executable on the processor. When the processor 402 executes the computer program, it implements the charging control method shown in the above embodiment. For example, the charging control method shown in Figure 1 or Figure 2.

[0143] Figure 5 is a block diagram of a charging control device provided in an embodiment of the present invention. As shown in Figure 5, the device includes:

[0144] The transmitting module 501 is used to transmit at least one communication signal when the terminal is in contact with the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function.

[0145] The determining module 502 is used to control the wireless charging module to terminate the charging process if it is determined, based on the response signal to at least one communication signal, that there is a physical communication card between the terminal and the wireless charging module.

[0146] Optionally, the communication signal includes a first communication signal, which is a card search signal; the response signal includes a first response signal; and a virtual communication card is provided in the terminal. The determining module 502 is used for:

[0147] In the case of receiving two first response signals for each of the at least one target first communication signals, the difference in frame delay time corresponding to the two first response signals is determined;

[0148] The presence of a physical communication card between the terminal and the wireless charging module is determined based on at least one difference.

[0149] Optionally, module 502 is used for:

[0150] The target feature value is determined based on at least one difference;

[0151] If the target feature value is within the preset range, it is determined that there is a physical communication card between the terminal and the wireless charging module;

[0152] If the target feature value is outside the preset value range, it is determined that there is no physical communication card between the terminal and the wireless charging module.

[0153] Optionally, the preset numerical range is determined based on multiple sample differences, where each sample difference is the difference between the delay time of the first sample frame and the delay time of the second sample frame corresponding to the delay time of the first sample frame.

[0154] The first sample frame delay time is the sample frame delay time of the sample virtual communication card of the sample terminal responding to the sample communication signal sent by the sample vehicle when there is a sample physical communication card between the sample terminal and the sample wireless charging module of the sample vehicle. The second sample frame delay time is the sample frame delay time of the sample physical communication card responding to the sample communication signal.

[0155] Optionally, the lower limit of the preset numerical range is the minimum absolute value of the differences between multiple samples, and the upper limit of the preset numerical range is the maximum absolute value of the differences between multiple samples.

[0156] Optionally, the communication signal includes a second communication signal, and the second communication signal includes a plurality of consecutive first sub-pulse signals, the amplitude of which changes monotonically; the response signal includes a second response signal; the determining module 502 is used for:

[0157] Receive at least one second response signal for each second communication signal, and determine the changing trend of each second response signal;

[0158] Determine whether a physical communication card exists between the terminal and the wireless charging module based on at least one trend.

[0159] Optionally, the communication signal further includes a first communication signal, which is a card search signal, and the response signal further includes a first response signal; the determining module 502 is used for:

[0160] If the number of first response signals received for each of the at least one first communication signal is less than two, at least one second response signal is received for each of the second communication signals.

[0161] Optionally, the trend of change is represented by the slope; the determination module 502 is used for:

[0162] If at least one slope contains a target number, then a physical communication card is identified.

[0163] If no target number is found in at least one slope, it is determined that no physical communication card has been identified.

[0164] Specifically, if the amplitude of multiple consecutive first sub-pulse signals increases monotonically, the target number is negative; if the amplitude of multiple consecutive first sub-pulse signals decreases monotonically, the target number is positive.

[0165] Optionally, each second response signal includes multiple second sub-pulse signals; the determining module 502 is used for:

[0166] Determine the voltage and target parameters of each second sub-pulse signal in the second response signal. The target parameters include phase or impedance.

[0167] Linear fitting was performed on multiple target parameters and multiple voltages to obtain variation curves;

[0168] The slope of the change curve is determined as the trend of the second response signal.

[0169] Optionally, the virtual communication card is a near-field communication (NFC) virtual card, and the physical communication card is an NFC physical card or an RFID physical card.

[0170] In summary, the present invention provides a charging control device in which, when the terminal is in contact with the wireless charging module of the vehicle and it is determined that the terminal supports the wireless charging function, that is, before the wireless charging module sends a charging current to the terminal, at least one communication signal is transmitted. If, based on the response signal to the at least one communication signal, it is determined that there is a physical communication card between the terminal and the wireless charging module, the wireless charging module is controlled to terminate the charging process.

[0171] Compared to related technologies, this invention can detect the presence of a physical communication card between the terminal and the wireless charging module before the wireless charging module sends charging current to the terminal. If a physical communication card is detected between the terminal and the wireless charging module, the wireless charging module can be controlled to terminate the charging process. This effectively avoids the risk of the coil in the physical communication card being damaged by the charging current, thus preventing damage to the physical communication card.

[0172] This invention provides a vehicle that includes the vehicle controller or charging control device described above.

[0173] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0174] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0175] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0176] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0177] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0178] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0179] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0180] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A charge control method characterized by, The method is applied to a vehicle and comprises the following steps: When a terminal contacts a wireless charging module of the vehicle and it is determined that the terminal supports a wireless charging function, at least one communication signal is transmitted; If it is determined that there is a physical communication card between the terminal and the wireless charging module based on a response signal to the at least one communication signal, the wireless charging module is controlled to terminate a charging process.

2. The method of claim 1, wherein, The communication signal comprises a first communication signal, the first communication signal is a card searching signal, the response signal comprises a first response signal, and a virtual communication card is arranged in the terminal; the method further comprises the following steps: When two first response signals to each of at least one target first communication signal are received, a difference between frame delay times corresponding to the two first response signals is determined; Whether there is a physical communication card between the terminal and the wireless charging module is determined based on at least one difference value.

3. The method of claim 2, wherein, Whether there is a physical communication card between the terminal and the wireless charging module is determined based on at least one difference value, which comprises the following steps: A target characteristic value is determined based on at least one difference value; If the target characteristic value is within a preset value range, it is determined that there is the physical communication card between the terminal and the wireless charging module; If the target characteristic value is outside the preset value range, it is determined that there is no physical communication card between the terminal and the wireless charging module.

4. The method according to claim 3, wherein The preset value range is determined based on a plurality of sample difference values, each of the sample difference values being a difference between a first sample frame delay time and a second sample frame delay time corresponding to the first sample frame delay time; The first sample frame delay time is a sample frame delay time of a sample virtual communication card of a sample terminal responding to a sample communication signal sent by a sample vehicle in a case where there is a sample physical communication card between the sample terminal and a sample wireless charging module of the sample vehicle, and the second sample frame delay time is a sample frame delay time of the sample physical communication card responding to the sample communication signal.

5. The method of claim 4, wherein, A lower limit value of the preset value range is a minimum value of absolute values of the plurality of sample difference values, and an upper limit value of the preset value range is a maximum value of absolute values of the plurality of sample difference values.

6. The method according to any one of claims 1 to 5, characterized in that, The communication signal comprises a second communication signal, the second communication signal comprises a plurality of continuous first sub-pulse signals, the amplitudes of the plurality of continuous first sub-pulse signals monotonically vary, the response signal comprises a second response signal, and the method further comprises the following steps: At least one second response signal to each of the second communication signals is received, and a variation trend of each of the second response signals is determined; Whether there is the physical communication card between the terminal and the wireless charging module is determined based on at least one variation trend.

7. The method of claim 6, wherein, The communication signal further comprises a first communication signal, the first communication signal is a card searching signal, the response signal further comprises a first response signal, and at least one second response signal to each of the second communication signals is received, which comprises the following steps: In a case where a number of first response signals for each of the first communication signals is less than two, at least one second response signal for each of the second communication signals is received.

8. The method of claim 6, wherein, The change trend is represented by a slope; The change trend is represented by a slope; The change trend is represented by a slope; If the target number exists in the at least one slope, it is determined that the physical communication card is identified. If the target number does not exist in the at least one slope, it is determined that the physical communication card is not identified.

9. The method of claim 6, wherein, If the amplitudes of the first sub-pulse signals monotonically increase, the target number is a negative number. Each of the second response signals includes a plurality of second sub-pulse signals. The change trend of the second response signal is determined by: A voltage and a target parameter of each of the second sub-pulse signals in the second response signal are determined, the target parameter including a phase or an impedance. A linear fitting is performed on the target parameters and the voltages to obtain a change curve.

10. The method according to any one of claims 2 to 5, characterized in that, A slope of the change curve is determined as the change trend of the second response signal.

11. A computer readable storage medium, characterized in that, The virtual communication card is a near field communication (NFC) virtual card, and the physical communication card is an NFC physical card or a radio frequency identification (RFID) physical card.

12. A vehicle controller characterized by comprising: A computer program product is provided, and the computer program product has computer instructions stored thereon, the computer instructions being executed by a processor to implement the charging control method according to any one of claims 1 to 10. The computer program product includes:

13. A vehicle characterized by comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the computer program to implement the charging control method according to any one of claims 1 to 10. The computer program product includes: The vehicle controller of claim 12.

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