Driving circuit and vehicle

Abstract

The application relates to a driving circuit and a vehicle. The driving circuit comprises a master control module and at least one driving module, the master control module is connected with a power-consuming device and an input end of the at least one driving module, and an output end of the at least one driving module is connected with the power-consuming device; the driving module comprises a half-bridge control unit, a first switch tube and a second switch tube. The half-bridge control unit drives the first switch tube or the second switch tube to work according to a control signal. The master control module is connected with an input end of the half-bridge control unit, a first end of the half-bridge control unit is connected with a control end of the first switch tube, a second end of the half-bridge control unit is connected with a control end of the second switch tube, a first end of the first switch tube is connected with a power supply, a second end of the first switch tube is connected with a first end of the second switch tube and the power-consuming device, and a second end of the second switch tube is grounded. Apparently, the application can be compatible with multiple control modes through a single or multiple driving modules, and the universality and control efficiency of the driving circuit are improved.

Description

Technical Field

[0001] This application relates to the field of electrical control technology, and in particular to a drive circuit and a vehicle. Background Technology

[0002] As the number of electrical devices in vehicles gradually increases, vehicles need to centrally drive and control different electrical devices. However, due to the differences in the functions of electrical devices, they need to be controlled by different drive voltages and drive currents, thus requiring different drive circuits. Summary of the Invention

[0003] In view of this, this application provides a drive circuit and a vehicle that can effectively improve the control efficiency of the drive circuit for different electrical devices.

[0004] In a first aspect, embodiments of this application provide a driving circuit for driving the operation of electrical equipment. The driving circuit includes: a main control module and at least one driving module; the main control module is connected to the input terminals of the electrical equipment and at least one driving module, respectively, and the output terminal of at least one driving module is connected to the electrical equipment; the main control module is used to acquire driving configuration information of the electrical equipment, determine at least one target driving module according to the driving configuration information, and generate a control signal to send to the target driving module, the target driving module being used to drive the electrical equipment to operate according to the control signal; wherein, the driving module includes a half-bridge control unit, a first switching transistor, and a second switching transistor. The half-bridge control unit is used to drive the first switching transistor or the second switching transistor to operate according to the control signal. The main control module is connected to the input terminal of the half-bridge control unit, the first terminal of the half-bridge control unit is connected to the control terminal of the first switching transistor, the second terminal of the half-bridge control unit is connected to the control terminal of the second switching transistor, the first terminal of the first switching transistor is connected to a power supply, the second terminal of the first switching transistor is connected to the first terminal of the second switching transistor and the electrical equipment, and the second terminal of the second switching transistor is grounded.

[0005] In one possible design, when the electrical device is a single-ended grounded device, a target drive module is connected to the electrical device and configured as a high-side drive, wherein the first switch is turned on and the second switch is turned off; when the electrical device is a single-ended power supply device, a target drive module is connected to the electrical device and configured as a low-side drive, wherein the first switch is turned off and the second switch is turned on; when the electrical device is a bridge-driven device, the connection method of the drive circuit includes the following two cases: a target drive module is connected to the electrical device, and the first switch and the second switch cooperate to drive the electrical device; and at least two target drive modules form a multi-phase bridge and are connected to the electrical device to drive the electrical device.

[0006] In one possible design, the half-bridge control unit includes a test terminal connected to the second terminal of the first switching transistor, which is used to determine the operating state of the first and second switching transistors.

[0007] In one possible design, the drive module further includes a sampling unit, one end of which is connected to the second terminal of the first switching transistor, and the other end of which is used to connect to the electrical device. The half-bridge control unit also includes a first sampling terminal and a second sampling terminal, the first sampling terminal being connected to one end of the sampling unit and the second sampling terminal being connected to the other end of the sampling unit. The half-bridge control unit acquires the voltage across the sampling unit through the first and second sampling terminals, thereby determining the electrical data during the operation of the drive circuit. The half-bridge control unit also transmits the electrical data to itself.

[0008] In one possible design, the half-bridge control unit includes a data acquisition terminal, to which the main control module is connected. The half-bridge control unit sends electrical data to the main control module through the data acquisition terminal. When the electrical data does not conform to a preset range, the main control module determines that the drive circuit has failed and controls the half-bridge control unit to stop working.

[0009] In one possible design, the half-bridge control unit further includes a first detection terminal and a second detection terminal. The first detection terminal is connected to the first terminal of the first switching transistor and the power supply, while the second detection terminal is grounded. The first detection terminal is used to detect the first reference data output by the power supply, and the second detection terminal is used to detect the second reference data input to the ground. The half-bridge control unit sends the first and second reference data to the main control module through the acquisition terminal. When the first reference data does not conform to the first preset reference range, and / or the second reference data does not conform to the second preset reference range, the main control module determines that the drive circuit has failed and controls the half-bridge control unit to stop working.

[0010] In one possible design, the half-bridge control unit includes a modulation terminal, and the main control module is connected to the modulation terminal. The main control module sends a periodic adjustment wave to the half-bridge control unit through the modulation terminal, and the half-bridge control unit controls the first or second switching transistor to turn on or off according to the adjustment wave.

[0011] In one possible design, the half-bridge control unit includes a communication terminal, the main control module is connected to the communication terminal, and the main control module sends the drive configuration information to the half-bridge control unit through the communication terminal.

[0012] In one possible design, the half-bridge control unit includes a start control terminal, and the main control module is connected to the start control terminal. The main control module controls the start and stop status of the half-bridge control unit through the start control terminal.

[0013] Secondly, this application provides a vehicle, which includes electrical equipment and a drive circuit as described in any of the above embodiments. The electrical equipment is connected to the drive circuit, and the drive circuit drives the electrical equipment to operate.

[0014] The drive circuit and vehicle provided in this application embodiment obtain the drive configuration information of the electrical equipment through the main control module, thereby generating a control signal to be sent to the target drive module. The half-bridge control unit of the target drive module drives the first or second switch to work according to the control signal. In this way, this application can be compatible with multiple control methods by driving the first and / or second switch in a single drive module, realizing high-side drive, low-side drive and half-bridge differential drive. It can also combine multiple drive modules. For different electrical equipment, switching can be performed only by parameter configuration, which can effectively meet the needs of different electrical equipment without hardware modification or setting up a dedicated drive circuit for each electrical equipment. It is convenient to quickly respond to the usage commands of the electrical equipment, improve the versatility and control efficiency of the drive circuit, and reduce the drive cost of the electrical equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the modular composition of a vehicle provided in one embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of a driving circuit provided in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of a high-side drive circuit provided in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of a low-side drive circuit provided in an embodiment of this application.

[0020] Figure 5 This is a diagram illustrating the combined operation of two driving modules provided in an embodiment of this application.

[0021] Figure 6 This is a diagram illustrating the combined operation of three driving modules provided in one embodiment of this application.

[0022] Figure 7 This is a diagram illustrating the combined operation of four driving modules provided in one embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0024] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0025] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0026] As the number of electrical devices in vehicles gradually increases, vehicles need to centrally drive and control different electrical devices. However, due to the differences in the functions of electrical devices, they need to be controlled by different drive voltages and drive currents, thus requiring different drive circuits.

[0027] Based on this, this application provides a drive circuit and a vehicle that can generate control signals according to the drive configuration information of the electrical equipment. The half-bridge control unit drives the first or second switching transistor to work according to the control signals. It is compatible with high-side drive, low-side drive and half-bridge differential drive. For different electrical equipment, switching can be performed only through parameter configuration. It can effectively meet the needs of different electrical equipment, facilitate quick response to the use commands of the electrical equipment, improve the versatility and control efficiency of the drive circuit, and reduce the drive cost of the electrical equipment.

[0028] Next, the drive circuit and vehicle provided in the embodiments of this application will be further described. It is understood that the vehicle involved in this application can be a traditional fuel vehicle, a new energy vehicle, or a hybrid vehicle, and this application does not limit the specific type of vehicle.

[0029] First, please refer to Figure 1 , Figure 1 This is a schematic diagram of the modular composition of a vehicle provided in one embodiment of this application. Figure 1 As shown, the vehicle 10 includes a controller 101, a drive circuit 102, and electrical equipment 103. The controller 101 drives the electrical equipment 103 to operate through the drive circuit 102.

[0030] Specifically, controller 101 may include a vehicle control unit (VCU), a body control module (BCM), a motor controller (microcontroller unit, MCU), or a battery management system (BMS), etc. This application does not limit the specific form of controller 101. Electrical equipment 103 may include vehicle lights, solenoid valves, DC motors, and stepper motors, etc. This application does not limit the specific form of electrical equipment 103.

[0031] Please see Figure 2The drive circuit 102 drives the electrical device 103 to operate. The drive circuit 102 includes a main control module 1021 and at least one drive module 1022. The main control module 1021 is connected to the input terminals of both the electrical device 103 and the at least one drive module 1022. The output terminal of the at least one drive module 1022 is connected to the electrical device 103. The main control module 1021 is used to acquire the drive configuration information of the electrical device 103, determine at least one target drive module based on the drive configuration information, and generate a control signal to send to the target drive module. The target drive module is used to drive the electrical device 103 to operate according to the control signal. Understandably, the main control module 1021 can be communicatively connected to the controller 101 and the electrical device 103. The communication connection can include a wired communication connection, such as a Controller Area Network (CAN), a Local Interconnect Network (LIN), or an Automotive Ethernet, etc. The communication connection may also include wireless communication connections, such as Bluetooth, Wi-Fi, or Cellular Vehicle-to-Everything (C-V2X) technology. This application does not limit the specific method of communication connection. The main control module 1021 may also be integrated with the controller 101. This application does not limit the specific configuration of the main control module 1021.

[0032] The driving module 1022 includes a half-bridge control unit 1022a, a first switch K1, and a second switch K2. The half-bridge control unit 1022a drives the first switch K1 or the second switch K2 to operate according to a control signal. The first switch K1 and the second switch K2 can be N-channel metal-oxide-semiconductor field-effect transistors (NMOSFETs), or they can be transistors, insulated-gate bipolar transistors (IGBTs), or other devices that can be controlled to turn on and off. This application does not limit the specific design of the first switch K1 and the second switch K2.

[0033] Specifically, the main control module 1021 is connected to the input terminal of the half-bridge control unit 1022a. The first terminal X of the half-bridge control unit 1022a is connected to the control terminal of the first switch K1. The second terminal Y of the half-bridge control unit 1022a is connected to the control terminal of the second switch K2. The first terminal of the first switch K1 is connected to the power supply 1022b. The second terminal of the first switch K1 is connected to the first terminal of the second switch K2 and the electrical device 103. The second terminal of the second switch K2 is grounded.

[0034] In one embodiment of this application, when the electrical device 103 is a single-ended grounded device, a target driving module is connected to the electrical device 103, and the target driving module is configured as a high-side drive, wherein the first switch K1 is turned on and the second switch K2 is turned off. It is understood that, as Figure 3 As shown, the single-ended grounding device includes two connection terminals, one grounded and the other connected to the target drive module. For example, the single-ended grounding device can be used for the lights and air suspension control valves of vehicle 10. The main control module 1021 controls the operation of a drive module 1022. At this time, the power supply 1022b supplies power to the first switching transistor K1, and the power supply 1022b, the first switching transistor K1, the sampling unit 1022c, and the electrical equipment 103 form a circuit.

[0035] In another embodiment of this application, when the electrical device 103 is a single-ended power supply type device, a target drive module is connected to the electrical device 103, and the target drive module is configured as a low-side drive, wherein the first switch K1 is turned off and the second switch K2 is turned on. Understandably, as... Figure 4 As shown, the single-ended power supply type device includes two connection terminals: one terminal is connected to the power supply 1022b, and the other terminal is connected to the target drive module. For example, the single-ended power supply type device can be a CPC (Clutch Pressure-Control) solenoid valve, etc. The power supply 1022b, the electrical device 103, the sampling unit 1022c, and the second switching transistor K2 form a circuit.

[0036] In another embodiment of this application, when the electrical device 103 is a bridge-driven device, the connection method of the drive circuit 102 includes the following two cases: one target drive module is connected to the electrical device 103, and the first switch K1 and the second switch K2 cooperate to drive the electrical device 103; and at least two target drive modules form a multi-phase bridge and are connected to the electrical device 103 to drive the electrical device 103.

[0037] For example, such as Figure 5As shown, when the electrical device 103 is a DC brushed motor or other device requiring two drive modules 1022 to drive, the two drive modules 1022 form an H-bridge drive circuit. Based on a pre-set periodic adjustment wave, the first switch K1 and the second switch K2 of the two drive modules 1022 are controlled to operate. For example, the adjustment wave includes a first level and a second level. When the first level is output, the first switch K1 of the first drive module 1022, the electrical device 103, and the second switch K2 of the second drive module 1022 form a loop. When the second level is output, the first switch K1 of the second drive module 1022, the electrical device 103, and the second switch K2 of the first drive module 1022 form a loop. The two drive modules 1022 have completely identical structures.

[0038] like Figure 6 As shown, when the electrical device 103 is a brushless direct current motor (BLDC), a permanent magnet synchronous motor (PMSM), or other equipment requiring three drive circuits 102 to drive, the three drive modules 1022 form a three-phase bridge drive circuit. In one cycle, current is combined and conducted between the three stator windings, forming a rotating magnetic field. The operation of the first switch K1 and the second switch K2 of the three drive modules 1022 is controlled according to the direction of the magnetic field. For example, when the magnetic field direction is 60°, the first switch K1 of the first drive module 1022, the electrical device 103, and the second switch K2 of the second drive module 1022 form a loop. When the magnetic field direction is 120°, the first switch K1 of the first drive module 1022, the electrical device 103, and the second switch K2 of the third drive module 1022 form a loop. When the magnetic field direction is 180°, the first switch K1 of the second drive module 1022, the electrical device 103, and the second switch K2 of the first drive module 1022 form a circuit. When the magnetic field direction is 240°, the first switch K1 of the second drive module 1022, the electrical device 103, and the second switch K2 of the third drive module 1022 form a circuit. When the magnetic field direction is 300°, the first switch K1 of the third drive module 1022, the electrical device 103, and the second switch K2 of the first drive module 1022 form a circuit. When the magnetic field direction is 360°, the first switch K1 of the third drive module 1022, the electrical device 103, and the second switch K2 of the second drive module 1022 form a circuit. This application does not limit the set magnetic field direction. The structures of the three drive modules 1022 are completely identical.

[0039] like Figure 7As shown, when the electrical device 103 is a stepper motor or other device requiring four drive modules 1022 to drive, the four drive modules 1022 form two H-bridge drive circuits. For example, the first and second drive modules 1022 are connected to the A-phase winding of the electrical device 103, and the third and fourth drive modules 1022 are connected to the B-phase winding of the electrical device 103. When the magnetic field direction is positive in phase A, the first switch K1 of the first drive module 1022, the electrical device 103, and the second switch K2 of the second drive module 1022 form a loop. When the magnetic field direction is positive in phase B, the first switch K1 of the third drive module 1022, the electrical device 103, and the second switch K2 of the fourth drive module 1022 form a loop. When the magnetic field direction is negative in phase A, the first switch K1 of the second drive module 1022, the electrical device 103, and the second switch K2 of the first drive module 1022 form a loop. When the magnetic field direction is opposite to B, the first switch K1 of the fourth drive module 1022, the electrical device 103, and the second switch K2 of the third drive module 1022 form a circuit. The four drive modules 1022 have completely identical structures.

[0040] It is understood that each drive module 1022 can be modularly packaged. Once the number of drive modules 1022 required by the electrical equipment 103 is determined, the corresponding number of drive modules 1022 can be retrieved to directly drive the electrical equipment 103. In this way, the efficiency of the control process can be effectively improved. Different types of electrical equipment 103 can be adapted by only changing the underlying software control logic. When any drive module 1022 fails, other drive modules 1022 can be quickly retrieved to run, ensuring the stability of the vehicle 10 and reducing the control difficulty of the electrical equipment 103.

[0041] In one embodiment of this application, the half-bridge control unit 1022a includes a test terminal C, which is connected to the second terminal of the first switching transistor K1. The test terminal C is used to determine the operating state of the first switching transistor K1 and the second switching transistor K2. For example, the direction of the current in the drive module 1022 can be monitored through the test terminal C to determine whether the first switching transistor K1 and the second switching transistor K2 are closed or open, thereby determining that the first switching transistor K1 and the second switching transistor K2 are operating according to the control signal. In this way, fault states such as shoot-through, false conduction, and damage of the first switching transistor K1 and the second switching transistor K2 can be identified in a timely manner, providing a reliable sampling basis for the overcurrent, overvoltage, and overheat protection of the drive module 1022, reducing the probability of the first switching transistor K1 and the second switching transistor K2 being damaged by shoot-through or short circuit, and improving the operational safety, stability, and fault self-diagnosis capability of the drive circuit 102.

[0042] In one embodiment of this application, the drive module 1022 further includes a sampling unit 1022c. One end of the sampling unit 1022c is connected to the second end of the first switching transistor K1, and the other end of the sampling unit 1022c is used to connect to the electrical device 103. The half-bridge control unit 1022a further includes a first sampling terminal D and a second sampling terminal E. The first sampling terminal D is connected to one end of the sampling unit 1022c, and the second sampling terminal E is connected to the other end of the sampling unit 1022c. The half-bridge control unit 1022a collects the voltage across the sampling unit 1022c through the first sampling terminal D and the second sampling terminal E, thereby determining the electrical data during the operation of the drive module 1022. The half-bridge control unit 1022a also transmits the electrical data to the main control module 1021. Understandably, the sampling unit 1022c can be a sampling resistor. In this way, the sampling unit 1022c can realize the constant current drive function, ensuring the stability of the current and reducing the probability of excessive current causing damage to the electrical device 103 or insufficient current causing the electrical device 103 to fail to start. Electrical data can be calculated based on the voltage across the sampling resistor, and may include current, power, and power consumption. This application does not limit the specific format of the electrical data or the calculation process. The sampling unit 1022c can also be a Hall current sensor, a shunt, or a current sensing amplifier, etc., and this application does not limit the specific format of the sampling unit 1022c.

[0043] In one embodiment of this application, the half-bridge control unit 1022a includes a data acquisition terminal N, and the main control module 1021 is connected to the data acquisition terminal N. The half-bridge control unit 1022a sends electrical data to the main control module 1021 through the data acquisition terminal N. When the electrical data does not conform to a preset range, the main control module 1021 determines that the drive module 1022 has failed and controls the half-bridge control unit 1022a to stop working.

[0044] For example, the half-bridge control unit 1022a further includes a first detection terminal P and a second detection terminal Q. The first detection terminal P is connected to the first terminal of the first switching transistor K1 and the power supply 1022b, and the second detection terminal Q is grounded. The first detection terminal P is used to detect the first reference data output by the power supply 1022b, and the second detection terminal Q is used to detect the second reference data input to the ground. The half-bridge control unit 1022a sends the first reference data and the second reference data to the main control module 1021 through the acquisition terminal N. When the first reference data does not conform to the first preset reference range, and / or the second reference data does not conform to the second preset reference range, the main control module 1021 determines that the drive module 1022 has failed and controls the half-bridge control unit 1022a to stop working.

[0045] In the above embodiment, the acquisition terminal N can be an analog-to-digital converter (ADC). The half-bridge control unit 1022a can transmit the electrical data, first reference data, and second reference data acquired during operation to the main control module 1021 through the acquisition terminal N, so as to provide real-time feedback to the main control module 1021. The main control module 1021 can promptly determine whether the drive module 1022 has malfunctioned and the specific location of the fault. For example, abnormal situations such as power supply 1022b failure, misfire of the first switch K1 and the second switch K2, or leakage of the second switch K2 to ground. In this way, the stable operation of the drive module 1022 can be effectively guaranteed, and the safety of the vehicle 10 can be improved.

[0046] In one embodiment of this application, the half-bridge control unit 1022a includes a modulation terminal M. The main control module 1021 is connected to the modulation terminal M. The main control module 1021 sends a periodic modulation wave to the half-bridge control unit 1022a through the modulation terminal M. The half-bridge control unit 1022a controls the first switch K1 or the second switch K2 to turn on or off according to the modulation wave. The modulation terminal M can be a pulse width modulation (PWM) port. The periodic modulation wave can be a pulse width modulation wave, which is a digital square wave signal that controls the analog signal output by adjusting the pulse width, i.e., the duty cycle. The pulse width modulation wave can be a square wave composed of alternating high and low levels. The main control module 1021 can also send other preset waveforms to the half-bridge control unit 1022a through the modulation terminal M. This application does not limit the specific style of the modulation wave.

[0047] In one embodiment of this application, the half-bridge control unit 1022a includes a communication terminal K. The main control module 1021 is connected to the communication terminal K. The main control module 1021 sends drive configuration information to the half-bridge control unit 1022a through the communication terminal K. The communication terminal K can be a Serial Peripheral Interface (SPI). The drive configuration information can include the type of the electrical device 103 and the style of the corresponding required drive module 1022. For example, a lighting device requires the drive module 1022 to perform high-side drive, a CPC solenoid valve requires the drive module 1022 to perform low-side drive, and a DC brushed motor requires two drive modules 1022 to be used in combination, etc.

[0048] In one embodiment of this application, the half-bridge control unit 1022a includes a start control terminal J, and the main control module 1021 is connected to the start control terminal J. The main control module 1021 controls the start and stop states of the half-bridge control unit 1022a through the start control terminal J. The start control terminal J can be a general purpose input / output (GPIO) port.

[0049] Please refer to it again. Figure 1 This application provides a vehicle 10, which includes an electrical device 103 and at least one drive circuit 102 as described in any of the above embodiments. The electrical device 103 is connected to the drive circuit 102, and the drive circuit 102 drives the electrical device 103 to operate.

[0050] It should be understood that the various embodiments of this application can be combined arbitrarily, for example, they can be used individually or in combination with each other to achieve different technical effects, and there is no limitation thereto.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A driving circuit for driving electrical equipment to operate, characterized in that: The driving circuit includes: a main control module and at least one driving module; the main control module is connected to the input terminals of the electrical device and at least one of the driving modules, respectively, and the output terminal of at least one driving module is connected to the electrical device; the main control module is used to acquire the driving configuration information of the electrical device, determine at least one target driving module according to the driving configuration information, and generate a control signal to send to the target driving module, the target driving module being used to drive the electrical device to operate according to the control signal; wherein... The drive module includes a half-bridge control unit, a first switch, and a second switch. The half-bridge control unit is used to drive the first switch or the second switch to work according to the control signal. The main control module is connected to the input terminal of the half-bridge control unit. The first terminal of the half-bridge control unit is connected to the control terminal of the first switch, and the second terminal of the half-bridge control unit is connected to the control terminal of the second switch. The first terminal of the first switch is connected to a power supply, and the second terminal of the first switch is connected to the first terminal of the second switch and the electrical equipment. The second terminal of the second switch is grounded.

2. The driving circuit as described in claim 1, characterized in that: When the electrical equipment is a single-ended grounded device, one of the target driving modules is connected to the electrical equipment, and the target driving module is configured as a high-side drive, wherein the first switch is turned on and the second switch is turned off; When the electrical device is a single-ended power supply type device, one of the target drive modules is connected to the electrical device, and the target drive module is configured as a low-side drive, wherein the first switch is turned off and the second switch is turned on; When the electrical equipment is a bridge-drive type device, the connection method of the drive circuit includes the following two cases: One of the target driving modules is connected to the electrical device, and the first switching transistor and the second switching transistor cooperate to drive the electrical device; and At least two of the target drive modules form a multiphase bridge and are connected to the electrical equipment to drive the electrical equipment.

3. The driving circuit as described in claim 1, characterized in that: The half-bridge control unit includes a test terminal, which is connected to the second terminal of the first switching transistor. The test terminal is used to determine the operating status of the first switching transistor and the second switching transistor.

4. The driving circuit as described in claim 1, characterized in that: The drive module further includes a sampling unit, one end of which is connected to the second end of the first switching transistor, and the other end of which is used to connect to the electrical equipment; the half-bridge control unit further includes a first sampling terminal and a second sampling terminal, the first sampling terminal being connected to one end of the sampling unit, and the second sampling terminal being connected to the other end of the sampling unit; The half-bridge control unit collects the voltage across the sampling unit through the first sampling terminal and the second sampling terminal, thereby determining the electrical data during the operation of the drive circuit. The half-bridge control unit also transmits the electrical data to itself.

5. The driving circuit as described in claim 4, characterized in that: The half-bridge control unit includes a data acquisition terminal, and the main control module is connected to the data acquisition terminal. The half-bridge control unit sends the electrical data to the main control module through the data acquisition terminal. When the electrical data does not conform to the preset range, the main control module determines that the drive circuit has failed and controls the half-bridge control unit to stop working.

6. The driving circuit as described in claim 5, characterized in that: The half-bridge control unit further includes a first detection terminal and a second detection terminal. The first detection terminal is connected to the first terminal of the first switching transistor and the power supply, and the second detection terminal is grounded. The first detection terminal is used to detect the first reference data output by the power supply, and the second detection terminal is used to detect the second reference data input to the ground. The half-bridge control unit sends the first reference data and the second reference data to the main control module through the acquisition terminal; When the first reference data does not conform to the first preset reference range, and / or the second reference data does not conform to the second preset reference range, the main control module determines that the drive circuit has failed and controls the half-bridge control unit to stop working.

7. The driving circuit as described in claim 1, characterized in that: The half-bridge control unit includes a modulation terminal, and the main control module is connected to the modulation terminal. The main control module sends a periodic adjustment wave to the half-bridge control unit through the modulation terminal, and the half-bridge control unit controls the first switch or the second switch to be turned on or off according to the adjustment wave.

8. The driving circuit as described in claim 1, characterized in that: The half-bridge control unit includes a communication terminal, and the main control module is connected to the communication terminal. The main control module sends the drive configuration information to the half-bridge control unit through the communication terminal.

9. The driving circuit as described in claim 1, characterized in that: The half-bridge control unit includes a start control terminal, and the main control module is connected to the start control terminal. The main control module controls the start and stop status of the half-bridge control unit through the start control terminal.

10. A vehicle, characterized in that, The vehicle includes electrical equipment and a drive circuit as described in any one of claims 1 to 9, wherein the electrical equipment is connected to the drive circuit, and the drive circuit drives the electrical equipment to operate.

Images