A driving circuit control method and system, and a vehicle

Abstract

The present application provides a drive circuit control method and system, and a vehicle, including: responding to a drive circuit control instruction, entering a window drive mode or a wireless charging mode; under the condition of the window drive mode, adjusting the battery voltage to a first voltage through a voltage converter and outputting it to the drive circuit, and driving the motor to rotate through the drive circuit to control the window to rise or fall; under the condition of the wireless charging mode, adjusting the battery voltage to a second voltage through a voltage converter and outputting it to the drive circuit, and activating the resonant circuit through the drive circuit to generate resonance and transmit electrical energy. The present application can reuse the drive circuit that controls the window for wireless charging, solving the problem that the window drive circuit and the wireless charging module are discretely designed and cannot reuse duplicate components, thereby reducing circuit costs. By sharing a voltage converter, the problem of large space occupation caused by the discrete design between the window drive circuit and the wireless charging module is solved.

Description

Technical Field

[0001] The present application relates to the field of circuit technology, and in particular to a drive circuit control method and system, and a vehicle. Background Art

[0002] Some vehicles design their power systems separately for the window driver circuit and wireless charging module. The window driver circuit controls window movement, while the wireless charging module handles wireless charging. This separate design occupies a large space and contains duplicate components, preventing component reuse and increasing costs. Furthermore, the vehicle power system's demand for multiple voltage levels is difficult to effectively meet, lacking intelligent control. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of this application is to provide a drive circuit control method and system, and a vehicle to solve the technical problems existing in the prior art.

[0004] To achieve the above-mentioned and other related purposes, the present application provides a driving circuit control method, comprising the following steps:

[0005] In response to a drive circuit control instruction, entering a window drive mode or a wireless charging mode;

[0006] In the window driving mode, the battery voltage is adjusted to a first voltage by a voltage converter and then output to a driving circuit, and the driving circuit drives the motor to rotate to control the window to rise or fall;

[0007] Under the condition of wireless charging mode, the battery voltage is adjusted to a second voltage by the voltage converter and then output to the driving circuit, and the resonant circuit is activated by the driving circuit to generate resonance and transmit electric energy; wherein, the resonant circuit includes a coil.

[0008] In one embodiment of the present application, in response to a driving circuit control instruction, the process of entering the window driving mode or the wireless charging mode includes:

[0009] When a window control button is triggered, generating a drive circuit control instruction for controlling the window according to a preset communication protocol; and transmitting the drive circuit control instruction for controlling the window to a microcontroller for response, so that the microcontroller enters the window driving mode; wherein the preset communication protocol includes a controller area network protocol, and the voltage converter is controlled by the microcontroller;

[0010] Alternatively, under the condition that a wireless charging device is placed in a preset area, a drive circuit control instruction for generating resonance is generated according to the preset communication protocol, and the drive circuit control instruction for generating resonance is transmitted to the microcontroller for response, so that the microcontroller enters the wireless charging mode; wherein, the preset area is determined according to the position of the coil and the vehicle window.

[0011] In one embodiment of the present application, in response to the driving circuit control instruction, the process of entering the window driving mode or the wireless charging mode further includes:

[0012] If a wireless charging device is placed in the preset area under the condition that the microcontroller enters the window driving mode, the microcontroller continues to maintain the window driving mode and switches to the wireless charging mode after the window is raised or lowered;

[0013] If the window control button is triggered under the condition that the microcontroller enters the wireless charging mode, the microcontroller directly switches from the wireless charging mode to the window driving mode.

[0014] In one embodiment of the present application, the process of driving the motor to rotate by the driving circuit to control the window to rise or fall includes:

[0015] The driving circuit drives the motor to rotate in the forward direction according to the first voltage and the first pulse width modulation parameter, thereby controlling the window to rise;

[0016] Alternatively, the driving circuit drives the motor to rotate in the reverse direction according to the first voltage and the first pulse width modulation parameter, thereby controlling the window to be lowered;

[0017] The first pulse width modulation parameter is transmitted to the driving circuit by a microcontroller.

[0018] In one embodiment of the present application, the method further includes:

[0019] Under the condition that the second voltage is less than the first voltage threshold, reducing the output power of the driving circuit and then activating the resonant circuit by the driving circuit to generate resonance;

[0020] Under the condition that the second voltage is greater than a second voltage threshold, increasing the frequency at which the resonant circuit generates resonance;

[0021] The first voltage threshold and the second voltage threshold are obtained based on the second voltage, and the second voltage threshold is greater than the first voltage threshold.

[0022] In one embodiment of the present application, if the driving circuit includes a switching component, the method further includes:

[0023] Performing abnormal state detection on the switch components in the driving circuit, wherein the abnormal state includes overcurrent or overtemperature;

[0024] When the switching component is in an overcurrent condition, disconnecting the switching component or fusing the battery; wherein the battery is used to provide the battery voltage;

[0025] When the switching component is overheated, disconnecting the switching component;

[0026] Wherein, the switching component includes an N-channel MOS field effect transistor or a P-channel MOS field effect transistor.

[0027] The present application further provides a drive circuit control system, which is applied to any one of the drive circuit control methods described above, and the drive circuit control system includes:

[0028] a microcontroller configured to respond to a control instruction from a drive circuit for controlling the vehicle window to enter a window driving mode, or respond to a control instruction from a drive circuit for generating resonance to enter a wireless charging mode;

[0029] a voltage converter connected to the battery and the microcontroller, configured to adjust the battery voltage to a first voltage and output the voltage to the drive circuit when the microcontroller enters a window driving mode, or to adjust the battery voltage to a second voltage and output the voltage to the drive circuit when the microcontroller enters a wireless charging mode; wherein the battery voltage is provided by the battery, and the first voltage is less than the second voltage;

[0030] A driving circuit is used to drive the motor to rotate according to the first voltage to control the window to rise or fall; or to activate the resonant circuit to generate resonance and transmit electrical energy according to the second voltage; wherein the resonant circuit includes a coil.

[0031] In one embodiment of the present application, the drive circuit includes four field-effect transistors and a driver for controlling the conduction or cutoff of the four field-effect transistors, the driver being respectively connected to the microcontroller, the voltage converter, and the gates of the four field-effect transistors; if the four field-effect transistors are respectively recorded as a first field-effect transistor, a second field-effect transistor, a third field-effect transistor, and a fourth field-effect transistor, then the drain of the first field-effect transistor and the drain of the third field-effect transistor are both connected to the voltage converter, the source of the second field-effect transistor and the source of the fourth field-effect transistor are both grounded, the source of the first field-effect transistor is connected to the drain of the second field-effect transistor, the source of the third field-effect transistor is connected to the drain of the fourth field-effect transistor, a first drive output exists between the source of the first field-effect transistor and the drain of the second field-effect transistor, a second drive output exists between the source of the third field-effect transistor and the drain of the fourth field-effect transistor, and the motor or the coil is connected between the first drive output and the second drive output.

[0032] In one embodiment of the present application, the drive circuit control system further includes a switch gating circuit arranged between the first drive output and the second drive output, the switch gating circuit including a Darlington tube and a relay, the Darlington tube being connected to the microcontroller and the relay respectively, and the relay being further connected to the first drive output and the second drive output; wherein the Darlington tube controls the relay to be attracted or disconnected according to the signal instruction of the microcontroller, thereby selecting the motor or the coil to be turned on.

[0033] The present application also provides a vehicle, which includes a drive circuit control system as described in any one of the above.

[0034] As described above, the present application provides a drive circuit control method, system, and vehicle, which have the following beneficial effects: the present application enters a window drive mode by responding to a drive circuit control instruction for controlling a window; or enters a wireless charging mode by responding to a drive circuit control instruction for generating resonance; in the window drive mode, the battery voltage is adjusted to a first voltage by a voltage converter and then output to the drive circuit, and the drive circuit drives the motor to rotate, thereby controlling the window to rise or fall; in the wireless charging mode, the battery voltage is adjusted to a second voltage by a voltage converter and then output to the drive circuit, and the drive circuit activates the resonant circuit to generate resonance and transmit electrical energy, so that the wireless charging device can be wirelessly charged according to the electrical energy transmitted by the resonant circuit. As can be seen from this, the present application can reuse the drive circuit for controlling the window lifting movement for wireless charging, which not only solves the problem that the window drive circuit and the wireless charging module are discretely designed and cannot reuse duplicate components, but also reduces circuit costs. At the same time, by sharing the voltage converter, the problem of the discrete design between the window drive circuit and the wireless charging module resulting in large space occupation is solved. Moreover, while being compatible with the existing electronic and electrical architecture, by switching between the window drive mode and the wireless charging mode, more scenario requirements can be met through intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic flow chart of a driving circuit control method provided in one embodiment of the present application;

[0036] Figure 2 A circuit connection diagram of a drive circuit control system provided in one embodiment of the present application;

[0037] Figure 3 A connection diagram of a switch gating circuit provided in an embodiment of the present application;

[0038] Figure 4 This is a schematic diagram of the control flow of a drive circuit control system provided in one embodiment of the present application. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present application by specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It is understood that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. In addition, it is understood that the illustrations provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings rather than being drawn according to the number, shape and size of the components during actual implementation. The type, quantity and proportion of each component during actual implementation can be a kind of arbitrary change, and its component layout type may also be more complicated.

[0040] Figure 1 A flow chart of a driving circuit control method is shown. Specifically, in an exemplary embodiment, as Figure 1 As shown, this embodiment provides a driving circuit control method, which includes the following steps:

[0041] S110, responding to a drive circuit control instruction, entering a window drive mode or a wireless charging mode;

[0042] S120-1, in the window driving mode, adjusting the battery voltage to a first voltage through a voltage converter and outputting the first voltage to a driving circuit, and driving the motor through the driving circuit to rotate, thereby controlling the window to rise or fall;

[0043] S120-2, under the condition of wireless charging mode, the battery voltage is adjusted to a second voltage by a voltage converter and then output to the driving circuit, and the resonant circuit is activated by the driving circuit to generate resonance and transmit electric energy; wherein, the resonant circuit includes a coil.

[0044] In some exemplary embodiments, the coil in the resonant circuit can be embedded in the left front door panel, right front door panel, left rear door panel, and / or right rear door panel of the vehicle. The type of coil in the resonant circuit can be selected or set according to the actual application scenario and is not specifically limited here. For example, as some examples, the coil in the resonant circuit can be a FOD (Foreign Object Detection, foreign object detection, abbreviated as FOD) type coil. As other examples, the coil in the resonant circuit can also be a planar spiral coil, the wire diameter of the planar spiral coil can be 0.5mm Litz wire, and the quality factor Q value is greater than 200.

[0045] In some exemplary embodiments, drive circuit control instructions can be generated by another controller (such as a cockpit domain controller) and transmitted to a microcontroller via a Controller Area Network (CAN) communication protocol. The microcontroller unit (MCU) then responds and enters the window drive mode or wireless charging mode. As some examples, the other controllers may generate drive circuit control instructions by, for example, triggering a window control button. The cockpit domain controller generates a first drive circuit control instruction for controlling the window according to the CAN communication protocol. The cockpit domain controller then transmits the first drive circuit control instruction to the microcontroller in response, causing the microcontroller to enter the window drive mode. The window control button can be a physical mechanical button or a virtual button on a display screen. The type of window control button is not limited and can be selected or set based on the actual application scenario. As some other examples, the way in which other controllers generate drive circuit control instructions may also include: under the condition that a wireless charging device is placed in a preset area, the cockpit domain controller generates a second drive circuit control instruction for generating resonance in accordance with the controller local area network communication protocol, and at the same time, the cockpit domain controller transmits the second drive circuit control instruction to the microcontroller in response, so that the microcontroller enters the window drive mode. Among them, the preset area can be determined according to the position of the coil and the window in the resonant circuit. For example, the surface area where the coil is mapped on the left front door panel, right front door panel, left rear door panel and / or right rear door panel of the vehicle can be used as the corresponding preset area. For another example, one or more grooves can be designed in the corresponding mechanical structure of the left front door panel, right front door panel, left rear door panel and / or right rear door panel of the vehicle as the aforementioned preset area. Among them, the position of the groove needs to be able to receive the electric energy transmitted by the resonant circuit.

[0046] In some exemplary embodiments, the voltage converter may be comprised of a buck-boost converter (Buck-Boost converter). A Buck-Boost converter is a direct current (DC-DC) converter that converts an input DC voltage and outputs a DC voltage that can be higher or lower than the input DC voltage. In some examples, the Buck-Boost converter may be controlled by a microcontroller. Furthermore, the Buck-Boost converter may directly receive pulse width modulation (PWM) parameters transmitted by the microcontroller. For example, the PWM parameters received by the Buck-Boost converter may be recorded as PWM1 parameters, or PWM1 for short. The PWM1 parameters may be used to control the speed of the motor. In other examples, the Buck-Boost converter may be a four-phase interleaved Buck-Boost circuit consisting of four parallel Buck-Boost units. Each Buck-Boost unit includes two complementary controlled switches (e.g., field-effect transistors), an inductor, a capacitor, and a freewheeling diode. The four Buck-Boost units operate alternately with a 90° phase shift, forming an interleaved parallel structure. In addition, as some examples, the output range of the voltage converter can be set or selected according to the actual application scenario. For example, the output range of the voltage converter can be 5V to 48V to help solve the multi-voltage demand problem for new energy vehicles in related technologies.

[0047] In some exemplary embodiments, the battery voltage may be a DC voltage provided by a battery in the vehicle. The magnitude of the DC voltage provided by the battery may be selected or set based on the actual application scenario, and the battery voltage is not limited to a specific numerical value herein. Furthermore, the specific values of the first voltage and the second voltage may be selected or set based on the actual application scenario, and the first voltage and the second voltage are not limited to specific numerical values herein. The first voltage may be less than the second voltage. For example, as some examples, a 10V DC voltage provided by a battery may be used as the battery voltage, a voltage converter may step up the 10V DC voltage provided by the battery to 12V DC and output it as the first voltage, or a voltage converter may step up the 10V DC voltage provided by the battery to 15V DC and output it as the second voltage; that is, the first voltage may be 12V DC, and the second voltage may be 15V DC.

[0048] In some exemplary embodiments, the drive circuit may be a window motor drive circuit used to control the raising and lowering of a vehicle window, and the motor may be a window motor that controls the raising or lowering of a vehicle window. For example, the motor may be a window motor located in the left front door panel, right front door panel, left rear door panel, and / or right rear door panel of the vehicle. Furthermore, the drive circuit may directly receive pulse width modulation parameters transmitted by a microcontroller. For example, the pulse width modulation parameters received by the drive circuit may be recorded as PWM2 parameters, or PWM2 for short. The PWM2 parameters may be used to provide circuit protection for the drive circuit. As some examples, the drive circuit may include four MOS field-effect transistors (MOSFETs) and a driver that controls the on / off switching of these four MOS field-effect transistors. Among them, the driver is respectively connected to the microcontroller, the voltage converter and the gates of the four MOS field-effect transistors; if the four MOS field-effect transistors are respectively recorded as the first MOS field-effect transistor, the second MOS field-effect transistor, the third MOS field-effect transistor and the fourth MOS field-effect transistor, then the driver is respectively connected to the gate of the first MOS field-effect transistor, the gate of the second MOS field-effect transistor, the gate of the third MOS field-effect transistor and the gate of the fourth MOS field-effect transistor, and the drain of the first MOS field-effect transistor and the drain of the third MOS field-effect transistor are both connected to the voltage converter, the source of the second MOS field-effect transistor and the source of the fourth MOS field-effect transistor are both grounded, the source of the first MOS field-effect transistor is connected to the drain of the second MOS field-effect transistor, the source of the third MOS field-effect transistor is connected to the drain of the fourth MOS field-effect transistor, a first driving output is provided between the source of the first MOS field-effect transistor and the drain of the second MOS field-effect transistor, a second driving output is provided between the source of the third MOS field-effect transistor and the drain of the fourth MOS field-effect transistor, and a motor or a coil is connected between the first driving output and the second driving output. The four MOS field-effect transistors in the aforementioned drive circuit may be N-channel MOS field-effect transistors or P-channel MOS field-effect transistors, and the driver may be a gate driver. As some examples, if all four MOS field-effect transistors in the aforementioned drive circuit are N-channel MOS field-effect transistors, then when the first and fourth MOS field-effect transistors are turned on and the second and third MOS field-effect transistors are turned off, the motor rotates normally, and this rotation direction is recorded as forward. When the second and third MOS field-effect transistors are turned on and the first and fourth MOS field-effect transistors are turned off, the motor rotates normally, and this rotation direction is recorded as reverse.When the first and third MOS field effect transistors are turned on and the second and fourth MOS field effect transistors are turned off, the motor does not rotate. When the second and fourth MOS field effect transistors are turned on and the first and third MOS field effect transistors are turned off, the motor does not rotate.

[0049] In some exemplary embodiments, a common-mode choke coil may be added to the driving circuit to reduce radiation interference in the driving circuit. The impedance of the common-mode choke coil may be greater than 1KΩ.

[0050] In some exemplary embodiments, the process of entering window drive mode or wireless charging mode in response to a driver circuit control command may further include: if a wireless charging device is placed in a preset area while the microcontroller is in window drive mode, the microcontroller maintains window drive mode and switches to wireless charging mode after the window is raised or lowered. If a window control button is triggered while the microcontroller is in wireless charging mode, the microcontroller directly switches from wireless charging mode to window drive mode. Therefore, window drive mode has higher priority than wireless charging mode. Therefore, if a passenger raises or lowers a window after the microcontroller enters wireless charging mode, the microcontroller immediately disengages wireless charging mode and enters window drive mode to drive the window motor and control window raising or lowering. Even if a wireless charging device is placed in the preset area after the microcontroller enters window drive mode or while the window is being raised or lowered, switching to wireless charging mode is still required after the window is raised or lowered.

[0051] In some exemplary embodiments, the process of driving a motor to rotate via a drive circuit to control the window's movement up or down includes: driving the motor forward according to a first voltage and a first pulse-width modulation parameter to control the window's movement up; or driving the motor reverse according to the first voltage and a first pulse-width modulation parameter to control the window's movement down. The first pulse-width modulation parameter is transmitted from a microcontroller to the drive circuit, and the first pulse-width modulation parameter can be used to control the motor's rotational speed. In some examples, clockwise rotation of the motor can be recorded as forward rotation, while counterclockwise rotation can be recorded as reverse rotation. In other examples, clockwise rotation can be recorded as reverse rotation, while counterclockwise rotation can be recorded as forward rotation. In other examples, forward and reverse rotation can be defined based on the direction of current flowing through the motor. The current direction corresponding to forward and reverse rotation can be set or selected based on the actual application scenario, and the current direction is not specifically limited herein.

[0052] In some exemplary embodiments, the drive circuit control method may further include: when the second voltage is less than a first voltage threshold, reducing the output power of the drive circuit and then activating the resonant circuit to generate resonance through the drive circuit; and when the second voltage is greater than a second voltage threshold, increasing the frequency at which the resonant circuit generates resonance; wherein the first voltage threshold and the second voltage threshold are derived based on the second voltage, and the second voltage threshold is greater than the first voltage threshold. For example, the first voltage threshold and the second voltage threshold can be set based on multiples of the second voltage, and thus the specific values of the first voltage threshold and the second voltage threshold are not limited herein. As some examples, 0.9 times the value corresponding to the second voltage can be used as the first voltage threshold, and 1.05 times the value corresponding to the second voltage can be used as the second voltage threshold. Therefore, when the resonant circuit is activated to generate resonance based on the second voltage, by comparing the second voltage with the first voltage threshold and the second voltage threshold, a low-power derating output can be performed when the second voltage is less than the first voltage threshold, and a high-power derating output can be performed when the second voltage is greater than the second voltage threshold to increase the charging speed.

[0053] In some exemplary embodiments, if the drive circuit includes a switching component, the drive circuit control method may further include: detecting an abnormal state of the switching component in the drive circuit, the abnormal state including overcurrent or overtemperature; disconnecting the switching component or fusing the battery when the switching component is in an overcurrent condition; wherein the battery is used to provide battery voltage; disconnecting the switching component when the switching component is in an overtemperature condition; wherein the switching component includes an N-channel MOS field-effect transistor or a P-channel MOS field-effect transistor. Specifically, as some examples, when detecting an abnormal state of the switching component in the drive circuit, the detection can be performed by the chip constituting the switching component, or by adding a sampling circuit. The chip model of the switching component and the specific circuit connection of the sampling circuit are not specifically limited here. In actual application scenarios, please refer to the relevant technology. Therefore, by detecting abnormal conditions of the switching components in the drive circuit, the drive circuit can be protected primarily and secondarily. That is, when the switching components are in overcurrent or undercurrent conditions, the drive circuit is protected primarily by disconnecting the switching components; when the switching components are in overcurrent conditions, the battery is protected secondarily by blowing the fuse, thereby achieving dual-path redundant protection and increasing the safety of the drive circuit.

[0054] In some exemplary embodiments, the drive circuit control method may further include performing multi-mode switching. Specifically, if the window control button is pressed as a trigger condition, the microcontroller's action sequence may be to immediately cut off charging and soft-drive the motor according to the pulse width modulation parameters corresponding to the window drive mode, with the response time for the current trigger condition being less than 50ms. If a controller area network sleep command is used as a trigger condition, the microcontroller's action sequence may be to maintain charging until the battery SOC (State of Charge) reaches 80%, then enter low-power mode. The response time for the current trigger condition can be set or configured. If a vehicle collision signal is used as a trigger condition, the microcontroller's action sequence may be to forcibly cut off all outputs and activate the vehicle's safety power supply. The response time for the current trigger condition is less than 10ms. Therefore, through multi-mode intelligent switching, seamless switching between window drive mode and wireless charging mode can be achieved while maintaining compatibility with existing electronic and electrical architectures, with a switching time of less than 100ms, meeting the needs of a wider range of scenarios under dynamic energy management.

[0055] In summary, the present application provides a drive circuit control method that enters a window drive mode by responding to a drive circuit control instruction for controlling a window; or enters a wireless charging mode by responding to a drive circuit control instruction for generating resonance. In the window drive mode, a voltage converter adjusts the battery voltage to a first voltage and outputs it to the drive circuit, which drives the motor to rotate and control the window to rise or fall. In the wireless charging mode, a voltage converter adjusts the battery voltage to a second voltage and outputs it to the drive circuit, which activates the resonant circuit to generate resonance and transmit electrical energy, so that a wireless charging device can be wirelessly charged based on the electrical energy transmitted by the resonant circuit. Therefore, this method can reuse the drive circuit that controls the window lifting movement for wireless charging, not only solving the problem of the window drive circuit and wireless charging module being discretely designed and unable to reuse duplicate components, but also reducing circuit costs. Furthermore, by sharing the voltage converter, the problem of the window drive circuit and wireless charging module being discretely designed, resulting in large space requirements, is solved. Furthermore, while being compatible with existing electronic and electrical architectures, switching between the window drive mode and wireless charging mode can meet the needs of more scenarios through intelligent control.

[0056] In another exemplary embodiment of the present application, a driving circuit control system is also provided, which can be applied to the driving circuit control method described in some of the above embodiments. Figure 2 As shown, the control system includes:

[0057] a microcontroller configured to respond to a control instruction from a drive circuit for controlling the vehicle window to enter a window driving mode, or respond to a control instruction from a drive circuit for generating resonance to enter a wireless charging mode;

[0058] a voltage converter connected to the battery and the microcontroller, configured to adjust the battery voltage to a first voltage and output the voltage to the drive circuit when the microcontroller enters a window driving mode, or to adjust the battery voltage to a second voltage and output the voltage to the drive circuit when the microcontroller enters a wireless charging mode; wherein the battery voltage is provided by the battery, and the first voltage is less than the second voltage;

[0059] The driving circuit is used to drive the motor to rotate according to the first voltage to control the window to rise or fall; or to activate the resonant circuit to generate resonance and transmit electrical energy according to the second voltage; wherein the resonant circuit includes a coil.

[0060] According to the above records, if Figure 2 As shown, the battery voltage can be provided by the battery in the vehicle, the voltage converter can be composed of a Buck-Boost converter, and the Buck-Boost converter is connected to the VBAT (Voltage of Battery, battery voltage, VBAT for short) terminal of the battery. At the same time, the drive circuit control instructions for controlling the windows and / or the drive circuit control instructions for generating resonance can be generated by other controllers (such as the cockpit domain controller, etc.), and transmitted to the microcontroller through the controller local area network communication protocol, and then the microcontroller responds to enter the window drive mode or wireless charging mode. In addition, the microcontroller can also transmit the pulse width modulation parameters corresponding to the speed when controlling the motor rotation to the Buck-Boost converter, which is recorded as PWM1 parameters or PWM1; the microcontroller can also transmit the pulse width modulation parameters for circuit protection of the drive circuit to the drive circuit, which is recorded as PWM2 parameters or PWM2. In Figure 2 In the embodiment, the driving circuit may be an H-Bridge Driver driving circuit (H-bridge driving circuit for short), wherein Q1 may be represented as the first MOS field effect transistor, Q2 may be represented as the second MOS field effect transistor, Q3 may be represented as the third MOS field effect transistor, and Q4 may be represented as the fourth MOS field effect transistor. Figure 2 In the example, Q1, Q2, Q3, and Q4 are all N-channel MOS field-effect transistors. Furthermore, data transmission or communication can be performed between the microcontroller and the H-bridge driver circuit via SPI (Serial Peripheral Interface). The H-bridge driver circuit can be a window motor driver circuit used to control the lifting and lowering of a vehicle window, and the motor can be a window motor that controls the lifting and lowering of a vehicle window. For example, Figure 2The motor M in the embodiment may be a window motor provided in the left front door panel, right front door panel, left rear door panel and / or right rear door panel of the vehicle. The coil in the resonant circuit may be embedded in the left front door panel, right front door panel, left rear door panel and / or right rear door panel of the vehicle. Figure 2 The coil and capacitor in the circuit can form an LC resonant circuit, and the corresponding coil can be a FOD type coil or a planar spiral coil.

[0061] In some exemplary embodiments, the aforementioned drive circuit or H-bridge drive circuit may include four field-effect transistors and a driver for controlling the four field-effect transistors to be turned on or off, wherein the driver is respectively connected to a microcontroller, a voltage converter, and the gates of the four field-effect transistors; if the four field-effect transistors are respectively recorded as a first field-effect transistor, a second field-effect transistor, a third field-effect transistor, and a fourth field-effect transistor, then the driver is respectively connected to the gate of the first field-effect transistor, the gate of the second field-effect transistor, the gate of the third field-effect transistor, and the gate of the fourth field-effect transistor, and the drain of the first field-effect transistor and the drain of the third field-effect transistor are both connected to the voltage converter, the source of the second field-effect transistor and the source of the fourth field-effect transistor are both grounded, the source of the first field-effect transistor is connected to the drain of the second field-effect transistor, the source of the third field-effect transistor is connected to the drain of the fourth field-effect transistor, a first drive output is provided between the source of the first field-effect transistor and the drain of the second field-effect transistor, a second drive output is provided between the source of the third field-effect transistor and the drain of the fourth field-effect transistor, and a motor or a coil is connected between the first drive output and the second drive output. The four MOS field-effect transistors in the drive circuit or H-bridge drive circuit can be either N-channel or P-channel MOS field-effect transistors, and the driver can be a gate driver. For example, if all four MOS field-effect transistors in the drive circuit or H-bridge drive circuit are N-channel MOS field-effect transistors, when the first and fourth field-effect transistors are on and the second and third field-effect transistors are off, the motor rotates normally, and this rotation direction is recorded as forward. When the second and third field-effect transistors are on and the first and fourth field-effect transistors are off, the motor rotates normally, and this rotation direction is recorded as reverse. When the first and third field-effect transistors are on and the second and fourth field-effect transistors are off, the motor does not rotate. When the second and fourth field-effect transistors are on and the first and third field-effect transistors are off, the motor does not rotate.

[0062] In some exemplary embodiments, the drive circuit control system further includes a switch gating circuit provided between the first drive output and the second drive output, the switch gating circuit including a Darlington tube and a relay, the Darlington tube being connected to the microcontroller and the relay respectively, and the relay being further connected to the first drive output and the second drive output; wherein the Darlington tube controls the relay to be closed or disconnected according to the signal instruction of the microcontroller, and selects the motor or coil to be turned on or off. Figure 2 As shown, the switch gating circuit is connected between the H-bridge driving circuit and the motor or coil, and can choose to conduct the H-bridge driving circuit and the motor, or choose to conduct the H-bridge driving circuit and the coil. Figure 3 As shown, the output of the H-bridge drive circuit is connected to a relay in the switch gating circuit, which in turn is connected to a microcontroller. The Darlington transistor receives an enable signal from the microcontroller and controls the relay to close or open, thereby selectively turning on the motor and disconnecting the coil, or disconnecting the motor and turning on the coil. As some examples, when the microcontroller enters window drive mode, the relay turns on the motor and disconnects the coil, causing the motor to rotate at a first voltage and control the window to rise or fall. When the microcontroller enters wireless charging mode, the relay turns on the coil and disconnects the motor, causing the LC resonant circuit to resonate at a second voltage, thereby wirelessly charging the wireless charging device by transmitting power.

[0063] According to the above records, in some exemplary embodiments, the control process of the aforementioned drive circuit control system is as follows: Figure 4As shown. Specifically, the drive circuit control system is initialized after power is turned on. The microcontroller detects the CAN bus instruction and determines whether the CAN bus instruction is a drive circuit control instruction for controlling the window or a drive circuit control instruction for generating resonance. The drive circuit control instruction for controlling the window can be generated when the window control button is controlled, and the drive circuit control instruction for generating resonance can be generated when the wireless charging device is placed in a preset area. If the CAN bus instruction is a drive circuit control instruction for controlling the window, the microcontroller enters the window drive mode after responding to the corresponding drive circuit control instruction. If the CAN bus instruction is a drive circuit control instruction for generating resonance, the microcontroller enters the wireless charging mode after responding to the corresponding drive circuit control instruction. In window drive mode, the relay in the switch gating circuit closes switches K1 and K2 based on an enable signal from the microcontroller. Simultaneously, the Buck-Boost converter boosts the 10V DC battery voltage provided by the battery to 12V DC before outputting it to the H-bridge driver circuit. The microcontroller outputs PWM1 parameters to the Buck-Boost converter, which then controls the motor to raise or lower the window. In wireless charging mode, the relay in the switch gating circuit closes switches K3 and K4 based on an enable signal from the microcontroller. Simultaneously, the Buck-Boost converter boosts the 10V DC battery voltage provided by the battery to 15V DC before outputting it to the H-bridge driver circuit. The microcontroller outputs PWM2 parameters to the H-bridge driver circuit, which then activates the LC resonant circuit to generate a 1MHz resonance, transferring power to wirelessly charge a wireless charging device located in a predetermined area. Furthermore, if a wireless charging device is placed in the predetermined area when the microcontroller enters window drive mode, the microcontroller maintains window drive mode and switches back to wireless charging mode after the window is raised or lowered. If the window control button is triggered while the microcontroller is in wireless charging mode, the microcontroller directly switches from wireless charging mode to window actuation mode to control the windows. When the microcontroller enters window actuation mode or wireless charging mode, it also detects abnormal conditions on the MOSFETs in the H-bridge drive circuit, including overcurrent and overtemperature detection. If the MOSFETs are experiencing overcurrent, the MOSFETs are disconnected or a battery fuse is blown. If the MOSFETs are experiencing overtemperature, the MOSFETs are disconnected. The MOSFETs can be either N-channel or P-channel.

[0064] It is understood that the drive circuit control system provided in the above embodiment and the drive circuit control method provided in the above embodiment are based on the same concept, wherein the specific manner in which the drive circuit control method performs operations has been described in detail in the above embodiment and will not be repeated here. In actual applications, the drive circuit control system provided in the above embodiment can, as needed, allocate the above functions to different functional modules. That is, the internal structure of the drive circuit control system can be divided into different functional modules, and then all or part of the functions of the corresponding functional modules can be implemented through the drive circuit control method described in the above embodiment. The detailed description will not be repeated here.

[0065] In summary, the present application provides a drive circuit control system that enters a window drive mode by a microcontroller responding to a drive circuit control command for controlling a vehicle window; or enters a wireless charging mode by a microcontroller responding to a drive circuit control command for generating resonance. A voltage converter is connected to a battery and a microcontroller. When the microcontroller enters the window drive mode, the battery voltage is adjusted to a first voltage and output to the drive circuit. Alternatively, when the microcontroller enters the wireless charging mode, the battery voltage is adjusted to a second voltage and output to the drive circuit. The drive circuit drives a motor to rotate according to the first voltage to control the window to rise or fall; or the drive circuit activates a resonant circuit according to a second voltage to generate resonance and transmit electrical energy; wherein the resonant circuit includes a coil. Therefore, this system can reuse the drive circuit for controlling the window lifting movement for wireless charging. This not only solves the problem of the window drive circuit and wireless charging module being discretely designed and unable to reuse duplicate components, but also reduces circuit costs. Furthermore, by sharing the voltage converter, the problem of the discrete design of the window drive circuit and wireless charging module resulting in large space requirements is solved. Moreover, while being compatible with the existing electronic and electrical architecture, by switching between the window drive mode and the wireless charging mode, more scenario requirements can be met through intelligent control.

[0066] In another exemplary embodiment of the present application, a vehicle is provided, comprising a drive circuit control system as described in the aforementioned embodiments. It will be appreciated that, since the specific manner in which the drive circuit control system operates has been described in detail in some of the aforementioned embodiments, the technical functions and effects of the vehicle provided herein can be referred to in the aforementioned embodiments and will not be further elaborated upon here.

[0067] It is understood that although the terms "first," "second," etc. may be used to describe voltages in the embodiments of the present application, these terms are merely used to distinguish voltages from one another. For example, a first voltage may also be referred to as a second voltage, and similarly, a second voltage may also be referred to as a first voltage without departing from the scope of the embodiments of the present application.

[0068] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this application shall be covered by the claims of this application.

Claims

1. A driving circuit control method, characterized in that: The method comprises the following steps: In response to a drive circuit control instruction, entering a window drive mode or a wireless charging mode; In the window driving mode, the battery voltage is adjusted to a first voltage by a voltage converter and then output to a driving circuit, and the driving circuit drives the motor to rotate to control the window to rise or fall; Under the condition of wireless charging mode, the battery voltage is adjusted to a second voltage by the voltage converter and then output to the driving circuit, and the resonant circuit is activated by the driving circuit to generate resonance and transmit electric energy; wherein, the resonant circuit includes a coil.

2. The driving circuit control method according to claim 1, wherein: In response to the drive circuit control instruction, the process of entering the window drive mode or the wireless charging mode includes: When a window control button is triggered, generating a drive circuit control instruction for controlling the window according to a preset communication protocol; and transmitting the drive circuit control instruction for controlling the window to a microcontroller for response, so that the microcontroller enters the window driving mode; wherein the preset communication protocol includes a controller area network protocol, and the voltage converter is controlled by the microcontroller; Alternatively, under the condition that a wireless charging device is placed in a preset area, a drive circuit control instruction for generating resonance is generated according to the preset communication protocol, and the drive circuit control instruction for generating resonance is transmitted to the microcontroller for response, so that the microcontroller enters the wireless charging mode; wherein, the preset area is determined according to the position of the coil and the vehicle window.

3. The driving circuit control method according to claim 2, wherein: In response to the drive circuit control instruction, the process of entering the window drive mode or the wireless charging mode further includes: If a wireless charging device is placed in the preset area under the condition that the microcontroller enters the window driving mode, the microcontroller continues to maintain the window driving mode and switches to the wireless charging mode after the window is raised or lowered; If the window control button is triggered under the condition that the microcontroller enters the wireless charging mode, the microcontroller directly switches from the wireless charging mode to the window driving mode.

4. The driving circuit control method according to any one of claims 1 to 3, characterized in that: The process of driving the motor to rotate by the driving circuit to control the window to rise or fall includes: The driving circuit drives the motor to rotate in a forward direction according to the first voltage and the first pulse width modulation parameter, thereby controlling the window to rise; Alternatively, the driving circuit drives the motor to rotate in the reverse direction according to the first voltage and the first pulse width modulation parameter, thereby controlling the window to be lowered; The first pulse width modulation parameter is transmitted to the driving circuit by a microcontroller.

5. The driving circuit control method according to claim 1, wherein: The method further comprises: Under the condition that the second voltage is less than the first voltage threshold, reducing the output power of the driving circuit and then activating the resonant circuit through the driving circuit to generate resonance; Under the condition that the second voltage is greater than a second voltage threshold, increasing the frequency at which the resonant circuit generates resonance; The first voltage threshold and the second voltage threshold are obtained based on the second voltage, and the second voltage threshold is greater than the first voltage threshold.

6. The driving circuit control method according to claim 1, wherein: If the driving circuit includes a switching component, the method further includes: Performing abnormal state detection on the switch components in the driving circuit, wherein the abnormal state includes overcurrent or overtemperature; When the switching component is in an overcurrent condition, disconnecting the switching component or fusing the battery; wherein the battery is used to provide the battery voltage; When the switching component is overheated, disconnecting the switching component; Wherein, the switching component includes an N-channel MOS field effect transistor or a P-channel MOS field effect transistor.

7. A drive circuit control system, applied to the drive circuit control method according to any one of claims 1 to 6, characterized in that: The drive circuit control system includes: a microcontroller configured to respond to a control instruction from a drive circuit for controlling the vehicle window to enter a window driving mode, or respond to a control instruction from a drive circuit for generating resonance to enter a wireless charging mode; a voltage converter connected to the battery and the microcontroller, configured to adjust the battery voltage to a first voltage and output the voltage to the drive circuit when the microcontroller enters a window driving mode, or to adjust the battery voltage to a second voltage and output the voltage to the drive circuit when the microcontroller enters a wireless charging mode; wherein the battery voltage is provided by the battery, and the first voltage is less than the second voltage; A driving circuit is used to drive the motor to rotate according to the first voltage to control the window to rise or fall; or to activate the resonant circuit to generate resonance and transmit electrical energy according to the second voltage; wherein the resonant circuit includes a coil.

8. The drive circuit control system according to claim 7, characterized in that: The driving circuit includes four field-effect transistors and a driver for controlling the four field-effect transistors to be turned on or off, the driver being connected to the microcontroller, the voltage converter and the gates of the four field-effect transistors respectively; if the four field-effect transistors are respectively recorded as a first field-effect transistor, a second field-effect transistor, a third field-effect transistor and a fourth field-effect transistor, then the drain of the first field-effect transistor and the drain of the third field-effect transistor are both connected to the voltage converter, the source of the second field-effect transistor and the source of the fourth field-effect transistor are both grounded, the source of the first field-effect transistor is connected to the drain of the second field-effect transistor, the source of the third field-effect transistor is connected to the drain of the fourth field-effect transistor, a first driving output is provided between the source of the first field-effect transistor and the drain of the second field-effect transistor, a second driving output is provided between the source of the third field-effect transistor and the drain of the fourth field-effect transistor, and the motor or the coil is connected between the first driving output and the second driving output.

9. The driving circuit control system according to claim 8, characterized in that: The drive circuit control system also includes a switch gating circuit arranged between the first drive output and the second drive output, the switch gating circuit includes a Darlington transistor and a relay, the Darlington transistor is connected to the microcontroller and the relay respectively, and the relay is also connected to the first drive output and the second drive output; wherein the Darlington transistor controls the relay to be attracted or disconnected according to the signal instruction of the microcontroller, and selects the motor or the coil to be turned on.

10. A vehicle, characterized in that: The vehicle includes the drive circuit control system according to any one of claims 7 to 9.

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