Control system and method for an electric vehicle charging drive control system, medium, device

Abstract

The application discloses a control system and method of an electric vehicle charging drive control system, a storage medium and an electronic device, and relates to the technical field of electric vehicle control systems. The system comprises a domain controller, wherein the domain controller is integrated with at least: a whole vehicle control core for executing whole vehicle control logic; a charging control core for executing charging control logic; and a drive control core for executing motor drive control logic; and the whole vehicle control core, the charging control core and the drive control core are connected through inter-core communication. According to the application, the control logic of a PDM is integrated into the domain control, and the control method under the multi-core architecture is combined, so that the connection circuit is simplified, high integration, high real-time performance and high safety are realized, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a control system and method, storage medium, and electronic device for an electric vehicle charging drive control system. Background Technology

[0002] When an electric vehicle is charging, the entire charging process is controlled by a charging drive control system. Currently, existing charging drive control systems generally adopt a distributed control architecture, where the control loop for Product Data Management (PDM) (including the DC-DC converter and on-board charger, OBC) is a separate loop, distinct from the domain controller circuit. The existing architecture of charging drive control systems requires independent Micro Controller Unit (MCU) chips and Digital Signal Processor (DSP) chips, and isolation communication devices are needed between these chips, resulting in complex and costly connection loops and high communication latency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a control system and method, storage medium and electronic device for an electric vehicle charging drive control system. By integrating the control logic of the PDM into the domain controller and combining it with the control method under the multi-core architecture, the connection loop is simplified, achieving high integration, high real-time performance and high security, and reducing costs.

[0004] The present invention provides an electric vehicle charging drive control system, including a domain controller, wherein the domain controller integrates at least:

[0005] The vehicle control core is used to execute the vehicle control logic; The charging control core is used to execute the charging control logic; The drive control core is used to execute the motor drive control logic; The vehicle control core, the charging control core, and the drive control core communicate with each other through inter-core communication.

[0006] Furthermore, it also includes: An isolation sampling circuit, connected to the domain controller, is used to isolate and convert the analog signal from the high-voltage circuit before inputting it to the domain controller.

[0007] Furthermore, the isolated sampling circuit includes: A power factor correction current isolation sampling circuit is used to isolate the current flow formed by the high-voltage loop to the domain controller.

[0008] Furthermore, the power factor correction current isolation sampling circuit includes: A current sampling resistor is placed in the high-voltage circuit to generate a current sampling signal; An isolation operational amplifier, wherein the input terminal of the isolation operational amplifier is connected to both ends of the current sampling resistor, for electrically isolating the current sampling signal; A differential operational amplifier, the input of which is connected to the output of the isolation operational amplifier, is used to convert the isolated signal into a differential signal and output it to the domain controller; The isolation operational amplifier and the differential operational amplifier are impedance matched and signal transmitted through matching resistors.

[0009] Furthermore, the isolated sampling circuit includes: The power input voltage isolation sampling circuit is used to convert the high-voltage AC signal into a small AC voltage signal, raise the small AC voltage signal to a preset voltage, and output it to the domain controller.

[0010] Furthermore, the power input voltage isolation sampling circuit includes: A differential sampling resistor network, connected to a high-voltage power supply, is used to convert high-voltage AC signals into small AC voltage signals; A bias circuit, connected to the differential sampling resistor network, is used to superimpose a preset bias voltage onto the small AC voltage signal; A differential amplifier is used to differentially amplify the superimposed biased signal and output the processed signal to the domain controller.

[0011] The technical solution of the present invention also provides a control method for the electric vehicle charging drive control system as described above, comprising: Upon receiving an external wake-up signal, the current working mode is identified based on the type of the external wake-up signal. Collect vehicle status information, which includes control guidance information and connection confirmation information; Based on the operating mode and the vehicle status information, the vehicle control core, the charging control core, and the drive control core are controlled to execute corresponding control logic; wherein, if the current operating mode is identified as the charging mode, the vehicle control core and the charging control core are controlled to synchronize their states through inter-core communication, and the charging control core executes the charging control logic.

[0012] Furthermore, if the current operating mode is identified as charging mode, the vehicle control core and the charging control core are synchronized via inter-core communication, and the charging control core executes the charging control logic, including: If the control guidance information indicates that the effective duty cycle of the control guidance has increased from zero to one, a rising edge signal of the control guidance voltage has been received, or the connection confirmation information indicates that the connection has been established, the vehicle control core and the charging control core will be woken up. If no unlocking request signal is received from the vehicle control core, the charging control core is controlled to lock the electronic lock. After the electronic lock is locked and a charging signal is received from the vehicle control core, the charging control core is controlled to close the charging permission switch and enable the on-board charger drive circuit to enter the charging state. If charging is complete and a sleep signal is received from the vehicle control core, the charging control core is controlled to enter a sleep state.

[0013] Furthermore, if no unlocking request signal is received from the vehicle control core, the charging control core is controlled to lock the electronic lock, which further includes: If the electronic lock fails to engage, the charging control core is controlled to enter standby mode.

[0014] Furthermore, after the electronic lock is locked and a charging signal is received from the vehicle control core, the charging control core is controlled to close the charging permission switch and enable the on-board charger drive circuit to enter the charging state. This process further includes: The charging control system monitors the fault status during the charging process. If a recoverable fault is triggered, the on-board charger drive circuit is shut down, and the charging control core is controlled to enter a recoverable fault state. If the fault is recovered within a preset time, the charging control core will enter standby mode; otherwise, the charging control core will enter an unrecoverable fault state.

[0015] Furthermore, the control of the charging process includes monitoring fault states during the charging process, and then further includes: If a short circuit fault is triggered, the charging control core is controlled to shut down the on-board charger drive circuit and enter the unrecoverable fault state.

[0016] The present invention also provides a computer-readable storage medium that stores computer instructions, which, when executed by a computer, are used to perform all steps of the control method of the electric vehicle charging drive control system as described above.

[0017] The present invention also provides an electronic device, comprising: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform the control method of the electric vehicle charging drive control system as described above.

[0018] The above technical solution has the following beneficial effects: 1. By integrating the vehicle control core, charging control core, and drive control core into the domain controller, a highly integrated multi-core architecture is formed, reducing the complexity of vehicle wiring harness connections, improving real-time communication, and reducing costs.

[0019] 2. Current and voltage sampling is performed through an isolated sampling circuit to prevent dangerous high-voltage current from flowing into the low-voltage circuit of the domain controller, eliminate ground loop interference, and improve safety, common-mode interference immunity, and signal-to-noise ratio.

[0020] 3. Combine control methods under a multi-core architecture to implement control logic for different functions, ensuring the real-time performance and security of the system. Attached Figure Description

[0021] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings: Figure 1 This is a schematic diagram of the structure of an electric vehicle charging drive control system according to an embodiment of the present invention; Figure 2 A schematic diagram of the circuit structure for a power factor correction current isolation sampling circuit; Figure 3 A schematic diagram of the circuit structure for the power input voltage isolation sampling circuit; Figure 4 A flowchart illustrating the control method of an electric vehicle charging drive control system according to an embodiment of the present invention; Figure 5 This is a flowchart illustrating the charging mode control steps in one embodiment of the present invention. Figure 6 A flowchart illustrating the control method of an electric vehicle charging drive control system according to a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the hardware structure of an electronic device for controlling a charging drive control system for an electric vehicle, provided as an embodiment of the present invention. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0025] like Figures 1-3 As shown, the technical solution of the present invention provides an electric vehicle charging drive control system, including a domain controller 10, wherein the domain controller 10 integrates at least: Vehicle control core 101 is used to execute vehicle control logic; The charging control core 102 is used to execute the charging control logic; Drive control core 103 is used to execute motor drive control logic; The vehicle control core 101, the charging control core 102, and the drive control core 103 communicate with each other.

[0026] Specifically, the electric vehicle drive control system provided in this embodiment mainly includes a domain controller 10. The domain controller 10 integrates at least a vehicle control core 101, a charging control core 102, and a drive control core 103. The vehicle control core 101, the charging control core 102, and the drive control core 103 interact through inter-core communication, eliminating the existing hard-wired wake-up circuit, EV CAN communication circuit, and PDM high-voltage interlock circuit between the PDM and the vehicle controller (VCM), and replacing the existing isolated communication devices.

[0027] The vehicle control core 101 executes the vehicle control logic, which is responsible for energy management, operating mode switching, etc. The vehicle control logic can be the control logic executed by the existing VCM, including: receiving and processing accelerator pedal signals, brake pedal signals, and gear position signals; calculating the vehicle's required torque; monitoring the power battery status and motor operating status; coordinating energy distribution to high-voltage accessories; switching logic control for normal, sport, or economy driving modes based on vehicle status; monitoring the vehicle's advanced safety status; and executing emergency protection strategies when advanced faults are detected. The vehicle control core 101 is hereinafter referred to as the VCM core.

[0028] The charging control core 102 executes the charging control logic, responsible for power conversion monitoring during AC charging, communication protocols with the charging pile, and safety protection. The charging control logic can be the control logic executed by an existing charging controller, including: establishing handshake communication with the external charging pile, parsing and executing the charging protocol; monitoring AC input voltage, current, and bus voltage, and controlling the power conversion circuit to achieve AC / DC conversion; adjusting output voltage and current according to the requirements of the battery management system (BMS); monitoring temperature and leakage status during charging, and executing high-voltage safety protection, etc. The charging control core 102 is hereinafter referred to as the charging core.

[0029] The drive control core 103 is used to execute the motor drive control logic, responsible for the inverter's pulse width modulation, current loop control, and signal processing of the motor position sensor. The motor drive control logic can be the control logic executed by an existing motor drive controller, including: receiving the required torque command sent by the first processing core and executing a vector control algorithm (FOC); processing the motor position sensor signal and calculating the rotor position and speed in real time; generating a pulse width modulation (PWM) signal to drive the inverter power module; and executing motor drive protection logic such as overcurrent, overvoltage, and overtemperature protection. The drive control core 103 is hereinafter referred to as the drive core.

[0030] In this embodiment, by integrating the vehicle control core, charging control core, and drive control core into the domain controller, a highly integrated multi-core architecture is formed, which reduces the complexity of vehicle wiring harness connections, improves real-time communication, and reduces costs.

[0031] In one embodiment, it further includes: An isolation sampling circuit 20 is connected to the domain controller 10 and is used to isolate and convert the analog signal of the high-voltage circuit before inputting it to the domain controller 20.

[0032] Specifically, the isolation sampling circuit 20 can isolate and sample the current of the high-voltage circuit through isolation operational amplifiers and differential operational amplifiers, and use differential sampling resistors to differentially sample the alternating current (AC) input voltage, thereby improving safety, anti-interference capability and signal-to-noise ratio.

[0033] In one embodiment, to prevent dangerous high-voltage current from flowing into the low-voltage circuitry of the domain controller and improve safety, the isolation sampling circuit 20 includes: The power factor correction current isolation sampling circuit 21 is used to isolate the current flow formed by the high voltage loop to the domain controller 10.

[0034] In one embodiment, such as Figure 2 As shown, the power factor correction current isolation sampling circuit 21 includes: The current sampling resistor R10 is placed in the high-voltage circuit to generate a current sampling signal; An isolation operational amplifier U6 is provided, the input terminal of which is connected to both ends of the current sampling resistor R10, for electrically isolating the current sampling signal. Differential operational amplifier U7, the input terminal of which is connected to the output terminal of isolation operational amplifier U6, is used to convert the isolated signal into a differential signal and output it to the domain controller 10; The isolation operational amplifier U6 and the differential operational amplifier U7 are impedance matched and signal transmitted through matching resistors R4 and R5.

[0035] Specifically, such as Figure 2 As shown, the power factor correction current isolation sampling circuit 21 includes a current sampling resistor R10, an isolation operational amplifier U6, a differential operational amplifier U7, a matching resistor R4, and a matching resistor R5. The non-inverting input terminal VINP of the isolation operational amplifier U6 is electrically connected to the output terminal L_OUT of the high-voltage circuit through the matching resistor R5. The inverting input terminal VINN of the isolation operational amplifier U6 is electrically connected to the input terminal L_IN of the high-voltage circuit. The non-inverting output terminal VOUTP of the isolation operational amplifier U6 is electrically connected to the non-inverting input terminal of the differential operational amplifier U7, and the inverting output terminal VOUTN of the isolation operational amplifier U6 is electrically connected to the inverting input terminal of the differential operational amplifier U7. The two ends of the current sampling resistor R10 are electrically connected to the output terminal L_OUT and the input terminal L_IN of the high-voltage circuit, respectively. One end of the matching resistor R4 is electrically connected to the reference voltage VREF, and the other end of the matching resistor R4 is electrically connected to the non-inverting input terminal of the differential operational amplifier U7. The output terminal of the differential operational amplifier U7 is electrically connected to the domain controller 10.

[0036] The current generated in the high-voltage circuit passes through the sampling resistor R10, and an analog voltage signal U=I is formed across R10 that varies with the alternating current. R10, the voltage signal U is output to the differential operational amplifier U7 after passing through the isolation operational amplifier U6 (gain is 1). The amplification factor (G=U) can be adjusted by changing the external matching resistors R4 and R5 of the differential operational amplifier U7. After adjustment by (R1 / R8), the signal is amplified by differential operational amplifier U7 and then output to the analog-to-digital converter (ADC) of domain controller 10 for further processing.

[0037] In this embodiment, a power factor correction current isolation sampling circuit is used to prevent dangerous high-voltage current from flowing to the low-voltage circuit of the domain controller, thereby improving safety. Furthermore, an isolation operational amplifier is used to cut off the ground loop, eliminating ground loop interference and noise, and improving measurement accuracy and system stability.

[0038] In one embodiment, to improve common-mode interference immunity and increase the signal-to-noise ratio, the isolation sampling circuit 20 includes: The power input voltage isolation sampling circuit 22 is used to convert the high-voltage AC signal into a small AC voltage signal, raise the small AC voltage signal to a preset voltage, and output it to the domain controller 10.

[0039] In one embodiment, such as Figure 3 As shown, the power input voltage isolation sampling circuit 22 includes: The differential sampling resistor network 221 is connected to the high-voltage power supply and is used to convert the high-voltage AC signal into a small AC voltage signal. The bias circuit 222 is connected to the differential sampling resistor network 221 and is used to superimpose a preset bias voltage onto the small AC voltage signal. Differential amplifier U9 is used to differentially amplify the superimposed biased signal and output the processed signal to the domain controller 10.

[0040] Specifically, such as Figure 3 As shown, the differential sampling resistor network 221 includes differential sampling resistors R22 to R41, R21, and R47. Differential sampling resistors R22 to R30 and R21 are connected in series, and differential sampling resistors R31 to R41 and R47 are connected in series. Differential sampling resistors R22 to R30 and R21 are electrically connected to the N line of the high-voltage power supply and the inverting input terminal of the differential amplifier U9, respectively. Differential sampling resistors R31 to R41 and R47 are electrically connected to the L line of the high-voltage power supply and the non-inverting input terminal of the differential amplifier U9, respectively.

[0041] The bias circuit 222 includes a bias resistor R57, which is electrically connected to the non-inverting input of the differential amplifier U9, and the bias voltage is VREF=1.65V.

[0042] Differential sampling resistors R22-R41, R21, and R47 convert the high-voltage AC signal into a small AC voltage signal. With the action of bias resistor R57, the small AC voltage signal formed by differential sampling resistors R22-R41 can be boosted by 1.65V, so that domain controller 10 can process the small AC voltage signal of the complete cycle. The small AC voltage signal is processed and amplified by differential amplifier U9 (G=R21 / R30) and then output to the ADC of domain controller 10 for processing.

[0043] like Figure 4 As shown, an embodiment of the present invention provides a control method for an electric vehicle charging drive control system as described above, comprising: Step S401: Receive an external wake-up signal and identify the current working mode according to the type of the external wake-up signal; Step S402: Collect vehicle status information, which includes control guidance information and connection confirmation information; Step S403: Based on the operating mode and the vehicle status information, control the vehicle control core, the charging control core, and the drive control core to execute corresponding control logic; wherein, if the current operating mode is identified as the charging mode, control the vehicle control core and the charging control core to synchronize their states through inter-core communication, and the charging control core executes the charging control logic.

[0044] Specifically, this invention can be applied to electronic devices with processing capabilities, such as vehicle controllers. For example, the Electronic Control Unit (ECU) of a vehicle.

[0045] When the charging gun is inserted to wake up the OBC, it indicates that an external wake-up signal has been received. The controller executes step S401 to identify the current working mode according to the type of the external wake-up signal, and then executes step S402 to collect vehicle status information, including control guidance information and connection confirmation information. Finally, it executes step S403 to control the VCM core, charging core and drive core to execute the corresponding control logic (including vehicle control logic, charging control logic and motor drive control logic) according to the working mode and vehicle status information. If the current working mode is identified as charging mode, the VCM core and charging core are controlled to synchronize their states through inter-core communication, and the charging core executes the charging control logic.

[0046] In this embodiment, by receiving an external wake-up signal, the current working mode is identified according to the type of the external wake-up signal, and vehicle status information is collected. Based on the working mode and vehicle status information, the vehicle control core, charging control core, and drive control core are controlled to execute corresponding control logic. This realizes the control method under the multi-core architecture to achieve control logic for different functions, ensuring the real-time performance and safety of the system.

[0047] like Figure 5 As shown, in one embodiment of the present invention, the charging mode control step includes: Step S501: If the control guidance information is that the effective duty cycle of the control guidance changes from zero to one, a rising edge signal of the control guidance voltage is received, or the connection confirmation information is that the connection has been established, wake up the vehicle control core and the charging control core; Step S502: If no unlocking request signal is received from the vehicle control core, control the charging control core to lock the electronic lock; Step S503: After the electronic lock is locked and a charging signal is received from the vehicle control core, the charging control core is controlled to close the charging permission switch and enable the on-board charger drive circuit to enter the charging state. Step S504: If charging is complete and a sleep signal is received from the vehicle control core, control the charging control core to enter sleep mode.

[0048] Specifically, the vehicle status information includes the CP effective duty cycle, CC status, and CP voltage rising edge signal. When the controller determines that the CP effective duty cycle has been woken up, or the CC is connected, or a CP voltage rising edge signal is received, step S501 is executed to wake up the VCM core and the charging core. Then, step S502 is executed to determine whether an unlock request signal sent by the VCM core has been received. If not, the drive core is controlled to drive the electronic lock to lock. Next, step S503 is executed. After the electronic lock is locked and a charging signal sent by the VCM core is received, the charging core is controlled to close the charging permission switch and enable the OBC drive circuit to enter the charging state. Here, the charging permission switch refers to the permission switch sent by the vehicle side to the charging pile. The charging permission switch being closed indicates that the charging pile is allowed to supply power, and the charging permission switch being open indicates that the power is cut off immediately. Safety and power control are achieved by controlling the charging permission switch. Finally, step S504 is executed. If charging is completed and a sleep signal sent by the VCM core is received, the charging core is controlled to enter the sleep state.

[0049] Preferably, before the charging control core enters the charging state, it is determined whether the drive control core is in the driving state through inter-core communication. If the drive control core is in the driving state, the on-board charger drive circuit is disabled by the charging control core.

[0050] Preferably, step S504 includes: Before sending a sleep signal, the vehicle control core first clears the hard-wired wake-up signal and stops sending related CAN communication messages.

[0051] In one embodiment, step S502, followed by: If the electronic lock fails to engage, the charging control core is controlled to enter standby mode.

[0052] Specifically, if the electronic lock fails to lock, it is determined to be an electronic lock malfunction, and the charging core is controlled to enter standby mode.

[0053] In one embodiment, step S503, followed by: The charging control system monitors the fault status during the charging process. If a recoverable fault is triggered, the on-board charger drive circuit is shut down, and the charging control core is controlled to enter a recoverable fault state. If the fault is recovered within a preset time, the charging control core will enter standby mode; otherwise, the charging control core will enter an unrecoverable fault state.

[0054] Specifically, during the charging process, the charging core monitors the fault status. If a recoverable fault is triggered, the OBC drive circuit is shut down, and the charging core is controlled to enter the recoverable fault state. The system monitors whether the fault is recovered within a preset time (e.g., 5 min). If the fault is recovered, the charging core is controlled to re-enter the standby mode. If the fault is not recovered, the charging core is controlled to enter the unrecoverable fault state.

[0055] In one embodiment, the control of the charging control during verification monitors the fault status during the charging process, and then further includes: If a short circuit fault is triggered, the charging control core is controlled to shut down the on-board charger drive circuit and enter the unrecoverable fault state.

[0056] like Figure 6 As shown, the preferred embodiment of the present invention provides a control method for an electric vehicle charging drive control system as described above, comprising: Step S601: "Charging core" goes into hibernation. The "charging core" remains in hibernation when the electric vehicle does not need to be charged. Step S602: Collect vehicle status information; Specifically, the vehicle status information includes the CP effective duty cycle, CC connection status and CP voltage status. If the CP effective duty cycle has been woken up, or the CC has been connected, or the CP voltage is triggered by the rising edge, step S603 is executed; otherwise, step S601 is executed to keep the "charging core" in sleep mode.

[0057] Step S603: The "charging core" is awakened; Step S604: Inter-core communication wakes up the "VCM core"; Step S605: Determine whether a VCM core request to unlock instruction has been received. If yes, proceed to step S606; otherwise, proceed to step S607. Step S606: Unlock the electronic lock; Step S607: Lock the electronic lock; Step S608: Determine whether a VCM request to unlock the electronic lock has been received. If so, proceed to step S606. Step S609: Does the effective CP last for 100ms within 1 minute? If yes, proceed to step S610; otherwise, proceed to step S601. Step S610: Initialize the "charging core"; Step S611: Determine whether a VCM core wake-up signal has been received. If yes, proceed to step S612; otherwise, proceed to step S601. Step S612: The "charging core" enters standby mode; Step S613: Determine whether the VCM wake-up signal has been cleared. If so, proceed to step S601; otherwise, proceed to step S614. Step S614: Determine whether a VCM core charging command has been received. If yes, proceed to step S615; otherwise, continue with step S614. Step S615: Charging wait mode; Step S616: Determine whether the "driver core" is in a driving state. If yes, proceed to step S614; otherwise, proceed to step S617. Step S617: Determine whether the electronic lock is locked. If yes, proceed to step S621; otherwise, proceed to step S618. Step S618: Determine whether the electronic lock has been successfully locked. If yes, proceed to step S621; otherwise, proceed to step S619. Step S619: Derating the output, such as limiting it to 3.3kW; Step S620: Determine if the electronic lock is faulty. If it is, proceed to step S629; otherwise, proceed to step S622. Step S621: Control the closing of the charging permission switch; Step S622: The "charging core" enters the charging state; Step S623: Enable the OBC driver; Step S624: Determine whether the CP duty cycle is 100%. For example, the CP duty cycle is 100% when the charging ends by swiping the card at the charging station. If yes, proceed to step S627; otherwise, continue to step S624. Step S625: Determine if the vehicle is fully charged and actively sends a power-off request to standby mode. If so, proceed to step S627; otherwise, continue to step S625. Step S626: Determine whether an internal fault has been triggered. If so, proceed to step S629; otherwise, continue with step S626. Step S627: Disable the OBC driver; Step S628: The "charging core" enters standby mode; Step S629: Determine if a recoverable fault has been triggered and refer to the fault list. If so, proceed to step S635; otherwise, continue to step S630. Step S630: Determine whether a short circuit fault has been triggered, such as an OBC output short circuit fault or excessive OBC inverter output power. If so, proceed to step S631; otherwise, continue to step S626. Step S631: Disable the OBC driver; Step S632: The "charging core" enters an unrecoverable fault state; Step S633: Disconnect S2 and control the electronic lock according to the VCM command; Step S634: Determine whether a sleep signal has been received from the "VCM core". If yes, proceed to step S601; otherwise, continue to step S634. Step S635: Disable the OBC driver; Step S636: The "charging core" enters a recoverable fault state; Step S637: Determine whether the recoverable fault has been recovered within 5 minutes. If so, proceed to step S612; otherwise, continue to step S632.

[0058] One embodiment of the present invention provides a computer-readable storage medium for storing computer instructions, which, when executed by a computer, are used to perform all steps of the control method of the electric vehicle charging drive control system as described in any of the above method embodiments.

[0059] like Figure 7 As shown, a hardware structure diagram of an electronic device for controlling a charging drive control system for an electric vehicle is provided in an embodiment of the present invention, comprising: At least one processor 701; and, A memory 702 is communicatively connected to at least one processor 701; wherein, The memory 702 stores instructions that can be executed by at least one processor 701, which enables the at least one processor 701 to perform the control method of the electric vehicle charging drive control system as described in any of the above method embodiments.

[0060] Figure 7 Take the 701 processor as an example.

[0061] The electronic device is preferably an electronic control unit (ECU).

[0062] The electronic device may also include an input device 703 and an output device 704.

[0063] The processor 701, memory 702, input device 703 and output device 704 can be connected by a bus or other means. The figure shows an example of connection by bus.

[0064] The memory 702, as a non-volatile computer-readable storage medium, can be used to obtain non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the control method of the electric vehicle charging drive control system in the embodiments of this application, for example, Figures 4-6 The method flow is shown. The processor 701 executes various functional applications and data processing by running non-volatile software programs, instructions, and modules acquired in the memory 702, thereby realizing the control method of the electric vehicle charging drive control system in the above embodiment.

[0065] The memory 702 may include a program acquisition area and a data acquisition area, wherein the program acquisition area may acquire the operating system and application programs required for at least one function; the data acquisition area may acquire data created by the use of the control method of the electric vehicle charging drive control system, etc. Furthermore, the memory 702 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 702 may optionally include memory remotely located relative to the processor 701, and these remote memories may be connected via a network to means of executing the control method of the electric vehicle charging drive control system. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0066] The input device 703 can receive user clicks and generate signal inputs related to user settings and function control of the electric vehicle charging drive control system. The output device 704 may include a display device such as a display screen.

[0067] When the one or more modules are accessed in the memory 702 and are run by the one or more processors 701, the control method of the electric vehicle charging drive control system in any of the above method embodiments is executed.

[0068] The above-described product can perform the methods provided in the embodiments of this application, and has the corresponding functional modules and beneficial effects for performing the methods. Technical details not described in detail in this embodiment can be found in the methods provided in the embodiments of this application.

[0069] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric vehicle charging drive control system, characterized in that, Includes a domain controller, which integrates at least: The vehicle control core is used to execute the vehicle control logic; The charging control core is used to execute the charging control logic; The drive control core is used to execute the motor drive control logic; The vehicle control core, the charging control core, and the drive control core communicate with each other through inter-core communication.

2. The electric vehicle charging drive control system as described in claim 1, characterized in that, Also includes: An isolation sampling circuit, connected to the domain controller, is used to isolate and convert the analog signal from the high-voltage circuit before inputting it to the domain controller.

3. The electric vehicle charging drive control system as described in claim 2, characterized in that, The isolation sampling circuit includes: A power factor correction current isolation sampling circuit is used to isolate the current flow formed by the high-voltage loop to the domain controller.

4. The electric vehicle charging drive control system as described in claim 3, characterized in that, The power factor correction current isolation sampling circuit includes: A current sampling resistor is placed in the high-voltage circuit to generate a current sampling signal; An isolation operational amplifier, wherein the input terminal of the isolation operational amplifier is connected to both ends of the current sampling resistor, for electrically isolating the current sampling signal; A differential operational amplifier, the input of which is connected to the output of the isolation operational amplifier, is used to convert the isolated signal into a differential signal and output it to the domain controller; The isolation operational amplifier and the differential operational amplifier are impedance matched and signal transmitted through matching resistors.

5. The electric vehicle charging drive control system as described in claim 2 or 3, characterized in that, The isolation sampling circuit includes: The power input voltage isolation sampling circuit is used to convert the high-voltage AC signal into a small AC voltage signal, raise the small AC voltage signal to a preset voltage, and output it to the domain controller.

6. The electric vehicle charging drive control system as described in claim 5, characterized in that, The power input voltage isolation sampling circuit includes: A differential sampling resistor network, connected to a high-voltage power supply, is used to convert high-voltage AC signals into small AC voltage signals; A bias circuit, connected to the differential sampling resistor network, is used to superimpose a preset bias voltage onto the small AC voltage signal; A differential amplifier is used to differentially amplify the superimposed biased signal and output the processed signal to the domain controller.

7. A control method for an electric vehicle charging drive control system as described in any one of claims 1-6, characterized in that, include: Upon receiving an external wake-up signal, the current working mode is identified based on the type of the external wake-up signal. Collect vehicle status information, which includes control guidance information and connection confirmation information; Based on the operating mode and the vehicle status information, the vehicle control core, the charging control core, and the drive control core are controlled to execute corresponding control logic; wherein, if the current operating mode is identified as the charging mode, the vehicle control core and the charging control core are controlled to synchronize their states through inter-core communication, and the charging control core executes the charging control logic.

8. The control method as described in claim 7, characterized in that, If the current operating mode is identified as charging mode, the vehicle control core and the charging control core are synchronized via inter-core communication, and the charging control core executes the charging control logic, including: If the control guidance information indicates that the effective duty cycle of the control guidance has increased from zero to one, a rising edge signal of the control guidance voltage has been received, or the connection confirmation information indicates that the connection has been established, the vehicle control core and the charging control core will be woken up. If no unlocking request signal is received from the vehicle control core, the charging control core is controlled to lock the electronic lock. After the electronic lock is locked and a charging signal is received from the vehicle control core, the charging control core is controlled to close the charging permission switch and enable the on-board charger drive circuit to enter the charging state. If charging is complete and a sleep signal is received from the vehicle control core, the charging control core is controlled to enter a sleep state.

9. The control method as described in claim 8, characterized in that, If no unlocking request signal is received from the vehicle control core, the charging control core is controlled to lock the electronic lock. This further includes: If the electronic lock fails to engage, the charging control core is controlled to enter standby mode.

10. The control method as described in claim 8, characterized in that, After the electronic lock is locked and a charging signal is received from the vehicle control core, the charging control core is controlled to close the charging permission switch and enable the on-board charger drive circuit to enter the charging state. The process then further includes: The charging control system monitors the fault status during the charging process. If a recoverable fault is triggered, the on-board charger drive circuit is shut down, and the charging control core is controlled to enter a recoverable fault state. If the fault is recovered within a preset time, the charging control core will enter standby mode; otherwise, the charging control core will enter an unrecoverable fault state.

11. The control method as described in claim 10, characterized in that, The control of the charging process includes monitoring fault status during the charging process, and then further includes: If a short circuit fault is triggered, the charging control core is controlled to shut down the on-board charger drive circuit and enter the unrecoverable fault state.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions, which, when executed by a computer, are used to perform all steps of the control method of the electric vehicle charging drive control system as described in any one of claims 7-11.

13. An electronic device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform the control method of the electric vehicle charging drive control system as described in any one of claims 7-11.

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