CD driver integrated control system and method of new energy automobile

Abstract

The invention discloses a CD driver integrated control system and method for a new energy automobile. The control system comprises a DSP controller, a photovoltaic inverter, a motor controller and a DCDC converter. An output power supply end of a solar cell panel arranged on a car roof is connected to a photovoltaic inverter, and the photovoltaic inverter outputs a voltage matched with a working voltage of a motor controller to a DCDC converter; the DC-DC converter inverts and rectifies the received voltage, and then the DSP controller carries out distribution control to supply power to a motor driving module of the motor controller and charge a power battery. The DSP controller is connected to a whole vehicle network through a CAN Bus and is used for receiving an upper-layer control instruction; the output end of the DSP controller is connected to the motor controller and the DCDC converter, and the DSP controller is used for controlling the motor controller and the DCDC converter to execute an upper-layer control instruction. A DSP chip is adopted to carry out interaction control on the driving system, the BOM cost of the whole vehicle is reduced, meanwhile, unified scheduling of information is achieved, and communication response is timely.

Description

Technical Field

[0001] The present invention relates to the field of drive control of new energy vehicles, and in particular to an optical drive integrated control system and method for new energy vehicles. Background Art

[0002] In this era, energy consumption continues to grow. With the in-depth implementation of energy revolution policies and measures and the continuous advancement of energy technology, the energy industry will continue to promote high-quality development. The development of low-carbon energy is increasingly supported and promoted by various countries, mainly including solar energy, wind energy, hydropower, biomass energy, nuclear energy, etc. With the global attention to climate change, the installed capacity and power generation of non-fossil energy power generation have grown rapidly in recent years.

[0003] In such an environment, major companies are gradually paying more and more attention to it. As an area with relatively high carbon emissions, the automobile industry is particularly affected.

[0004] The automotive industry is accelerating its transformation to new energy vehicles, promoting the popularization of low-carbon or carbon-free vehicles such as electric vehicles and hydrogen-powered vehicles; the government will also increase its support for the research and development and application of new energy vehicle technology, and promote the breakthrough and application of key technologies such as battery technology, charging facilities, and intelligent networking. At the same time, the new energy vehicle industry chain is constantly improving, forming a more complete industrial ecological system. At present, the proportion of new energy vehicles in the market has experienced continuous explosive growth for many years, but new energy vehicles still face great problems in terms of endurance. Nowadays, the range of pure electric vehicles on the market is usually between 200 kilometers and 400 kilometers, and the range of some high-end models can reach more than 500 kilometers. The progress of battery technology, such as the improvement of battery energy density, the optimization of power system conversion efficiency and its control, and the adoption of lightweight design, has enabled some models to have a range of more than 600 kilometers. However, in general, there are still problems that cannot be ignored in increasing the range of pure electric new energy vehicles by increasing the power. In recent years, my country has made remarkable achievements in the fields of wind power and photovoltaic power generation, and its installed capacity and power generation are among the best in the world, achieving leapfrog development in new energy power generation. On this basis, adding a solar photovoltaic panel to the new energy vehicle, using a photovoltaic inverter to convert solar energy into electrical energy to supplement the vehicle's total battery, and using secondary energy for energy replenishment can effectively solve the problem of range anxiety.

[0005] Solar photovoltaic power generation vehicles launched in recent years have come into being in response to such scenario needs. However, there are still many pain points in solar vehicles that need to be solved. First, the powertrain of solar vehicles has become more complicated, the number of chips used has increased, the system efficiency has decreased, and the cost has increased significantly; second, the structure is complex, the circuits between modules are long, and the difficulty of handling when a fault occurs increases; third, the increase in devices has increased the weight of the vehicle itself, and the motor load has increased. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an integrated optical drive control system and method for new energy vehicles, which combines multiple components such as photovoltaic inverters and motor controllers, deeply integrates various modules and shares a DSP chip, while improving power density, improving efficiency, and reducing the BOM cost of the entire vehicle, while achieving unified information scheduling and timely communication response.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an integrated optical drive control system for a new energy vehicle, the control system comprising a DSP controller, a photovoltaic inverter, a motor controller, and a DCDC converter; the output power supply end of the solar panel arranged on the roof is connected to the photovoltaic inverter, and the photovoltaic inverter outputs a voltage matching the working voltage of the motor controller to the DCDC converter; the DC-DC converter inverts and rectifies the received voltage, and then the DSP controller distributes and controls it to power the motor drive module of the motor controller and charge the power battery respectively; the DSP controller is connected to the vehicle network through the CAN Bus to receive upper-level control instructions; the output ends of the DSP controller are respectively connected to the motor controller and the DCDC converter, and are used to control them to execute the upper-level control instructions.

[0008] The control system also includes a thermal management module, which is used to perform thermal management control on the photovoltaic inverter, motor controller, DCDC converter, and power battery; it is connected to the thermal management module by a DSP controller, and the thermal management module is driven and controlled by the DSP controller and forwards transmission signals.

[0009] The DSP controller is connected to a voltage sensor, a current sensor, and a temperature sensor, and the voltage sensor, current sensor, and temperature sensor are used to collect and monitor the voltage, current, and temperature of each module in the control system.

[0010] The modules in the control system are integrated in a housing, and the DSP controller receives upper-level control signals and performs interactive control with the modules in the housing.

[0011] The photovoltaic inverter converts the DC power with large fluctuations generated by the photovoltaic panel into the required stable voltage signal, and includes a maximum power point tracking MPPT functional module and a power quality regulation module; the photovoltaic inverter receives the DC power emitted by the photovoltaic panel and provides it to the DC-DC converter; the motor controller is responsible for controlling the operating state of the motor, and the motor controller receives the DC power emitted by the DC-DC converter and drives the motor to operate after conversion, and at the same time feeds back the control state signal to the DSP controller so that the DSP controller can manage multiple signals; the DC-DC converter converts the DC voltage output by the photovoltaic inverter into a voltage range suitable for the motor controller, so as to achieve the matching of the output voltage of the photovoltaic inverter and the voltage required by the motor controller.

[0012] In the thermal management module of the control system, a water cooling pipe is arranged on the inner wall of the shell in the control system and controls the heat dissipation of each module of the control system; a fan with controllable speed is fixed at the beginning of the water cooling pipe, and the combination of the beginning of the water cooling pipe and the fan is arranged around the motor controller and / or the driving motor to realize heat dissipation control; the DSP main control chip samples the temperature and transmits a signal to the VCU in real time, controls the speed of the fan to control the flow rate of the water in the water pipe, and thereby achieves a temperature rise balance for the entire system.

[0013] The photovoltaic inverter converts the signal generated by the photovoltaic module into the signal required by the DC-DC converter, and obtains the required voltage range under the on and off control of the power electronic switch. The photovoltaic inverter also includes a filtering module to reduce or eliminate high-frequency harmonic distortion and noise in the output AC waveform to ensure the quality of power.

[0014] The motor controller receives signals from the DSP controller and converts them into control signals that the motor can recognize, thereby achieving precise control of parameters such as motor speed, direction, and torque; the motor controller is internally provided with a control circuit and a power conversion circuit; the control circuit is responsible for parsing external signals and generating corresponding control instructions; the power conversion circuit converts the current emitted by the upper bus into a PWM signal suitable for driving the motor according to the control instructions by turning on and off the power electronic switch.

[0015] A control method for an integrated optical drive control system of a new energy vehicle is disclosed. When the system is powered on normally, a photovoltaic inverter transmits a signal to a DC-DC converter, and the DC-DC converter divides the inverted and rectified direct current into two parts: one part is transmitted to a motor controller, and is supplied to the motor together with the original battery power supply to meet the power demand of the whole vehicle; the other part of the direct current is directly sent to a power battery to be stored in the battery for standby; at the same time, the photovoltaic inverter, the DCDC converter and the motor controller transmit signals to a DSP controller for signal collection, and the DSP controller controls the DCDC converter and the motor controller according to the collected signals to ensure that the current generated by the photovoltaic power generation module can be safely and stably transmitted to the electric control system.

[0016] When the system is powered off, the DCS controller receives upper-level control instructions through the CAN Bus; then the DSP controller sends a signal corresponding to the upper-level control instruction to control the interruption of the DCDC converter to transmit current to the motor controller, and at the same time controls the photovoltaic inverter to transmit electric energy to the DC-DC converter, which is converted by the DCDC converter and continuously charged into the battery. When the battery is fully charged, it is fed back to the DSP controller, and the DSP chip interrupts the operation of the photovoltaic power generation module.

[0017] The advantages of the present invention are: combining multiple components such as photovoltaic inverters and motor controllers, deeply integrating various modules and sharing a DSP chip, while improving power density, improving efficiency and reducing the BOM cost of the entire vehicle, achieving unified information scheduling and timely communication response. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0019] Figure 1 This is the topology diagram of the integrated optical drive system described in this solution.

[0020] Figure 2 This is a flow chart of the specific implementation plan of the vehicle state machine related to this system DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0022] In view of such problems, the present invention integrates functions and deeply integrates them into an assembly, establishes a solar car's integrated light-driven power system, combines multiple components such as photovoltaic inverters and motor controllers, deeply integrates various modules and shares a DSP chip, while improving power density, improving efficiency, and reducing the BOM cost of the whole vehicle, realizing unified information scheduling and timely communication response. In the present invention, the photovoltaic panel sends a DC voltage to the photovoltaic inverter, and after signal conversion, the photovoltaic inverter transmits the signal to the DC-DC converter. The DC-DC converter divides the DC power after inversion and rectification into two parts, one part is output to the motor controller, and the motor is supplied with the original power to meet the power demand of the whole vehicle, and the other part of the DC power will be stored in the battery for standby, so that it can continuously supply power when the original power is insufficient. At the same time, the photovoltaic inverter, DC-DC converter and motor controller will transmit signals to the DSP and monitor the signals, and output six PWM signals to drive the motor to run, so as to ensure that the current emitted by the photovoltaic power generation module can be safely and stably transmitted to the electric control system under the shortest transmission path of the signal source. Implement an advanced fault diagnosis and protection strategy. For example, in the thermal management module, if an over-temperature fault occurs in the system, the DSP transmits an over-temperature signal to the VCU according to the fault priority. The VCU controls the fan rotation. As the temperature rises, the speed increases continuously and the water flow rate also speeds up, making the heat dissipation faster. When the temperature drops below the threshold, the fan receives feedback and stops running, quickly and efficiently achieving temperature rise balance.

[0023] like Figure 1 As shown, this embodiment is to establish an integrated optical drive integrated assembly system for new energy vehicles, the core of which is to have a set of integrated optical drive integrated power modules, which integrate photovoltaic inverters, DC-DC controllers, motor controllers, batteries, motors and unique circulating water cooling thermal management modules into one system. The originally complex distributed structure is concentrated into one through a DSP chip through design, wherein the DC-DC conversion module, motor drive control module and thermal management module share a housing, shortening the signal transmission path and reducing the BOM cost, thereby achieving high-quality power management of the vehicle and driving and controlling the motor, and also increasing the driving range.

[0024] The solar electric vehicle optical drive integrated system assembly of this embodiment includes a photovoltaic inverter, a motor controller, a DC-DC converter, a battery and a water cooling pipe. It is characterized in that, on the basis of using one DSP chip for one component, the functions are integrated and deeply integrated into one assembly and a DSP chip is shared, so that the DC-DC conversion module, the motor drive control module and the thermal management module share a shell, and a water cooling pipe is attached in the shell, so that the cooling medium circulates to the water outlet jacket and enters the external cooling system.

[0025] The photovoltaic power generation module of the integrated optical drive system is located on the roof. The top is a flat photovoltaic panel covering the roof. It collects solar energy and sends direct current to the photovoltaic inverter. In order to match the voltage emitted by the photovoltaic inverter with the voltage received by the motor controller, the DC voltage emitted by the photovoltaic inverter is inverted and rectified by the DC-DC converter, and the last part enters the motor drive control module for vehicle driving. There is also a part of excess electricity stored in the vehicle battery, which is controlled by the BMS. Among them, the assembly consisting of the DC-DC conversion module, the motor drive control module, and the thermal management module is located in the lower body. All these modules are controlled by a DSP chip to transmit signals. The DSP also collects voltage, current, temperature, etc. of each module to ensure that the signal can be transmitted and applied normally.

[0026] The present invention is a powertrain system with multiple auxiliary modules deeply integrated, such as a photovoltaic power generation module and a motor drive control module. The components and their features of the present invention are described below:

[0027] The photovoltaic inverter is one of the core components in the photovoltaic power generation module. It converts the fluctuating DC power generated by the photovoltaic panels into demand signals for supply to the grid or load. The photovoltaic inverter has many functions, such as maximum power point tracking (MPPT), grid synchronization, power quality regulation, etc. In this integrated system, the photovoltaic inverter mainly receives the DC power generated by the photovoltaic panels and provides it to the DC-DC converter, and then transmits the signal to the DSP for multiple signal collection.

[0028] The motor controller is a key component of the motor drive control module, responsible for controlling the motor's operating status, such as speed, torque, etc. The motor controller requires a stable DC power supply to drive the motor and ensure the stable operation of the motor. In this integrated system, the motor controller mainly receives the DC power from the DC-DC converter, drives the motor after conversion, and then feeds back the signal to the DSP for multiple signal management.

[0029] The photovoltaic power generation module and the motor drive control module need to be implemented by a DC-DC converter, which is a power electronic conversion whose main function is to realize the conversion of DC voltage. It has good dynamic response capability and can quickly adjust the output voltage to cope with changes in system load, thereby improving the stability and reliability of the system. In the connection between the photovoltaic inverter and the motor controller, the DC-DC converter can play a key role. The DC voltage received and sent by the photovoltaic inverter is too large. If it is directly input to the motor controller, it will cause damage to the motor controller. The DC-DC converter can convert the DC voltage output by the photovoltaic inverter into a voltage range suitable for the motor controller, so as to achieve an accurate match between the output voltage of the photovoltaic inverter and the voltage required by the motor controller. In this way, it can not only ensure the normal operation of the motor controller, but also optimize the energy utilization efficiency and system stability, thereby avoiding energy loss and functional damage caused by voltage mismatch.

[0030] In the thermal management module of the entire system, the water cooling pipe is fixed on the inner wall of the shell. A fan with controllable speed is fixed at the beginning of the water cooling pipe. This combination is located below the motor controller and the drive motor. At the same time, the IGBT heat dissipation base can be directly inserted into the water cooling pipe to achieve a more direct and efficient cooling mode. The DSP main control chip samples the temperature and transmits signals to the VCU in real time, controlling the speed of the fan to control the flow rate of the water in the water pipe, thereby achieving the temperature rise balance of the entire system. When the entire system is operating normally, the temperature is within the specified threshold, the fan does not operate, and the flow rate of the water in the pipe can keep the components in the shell within the specified temperature. When the system has an over-temperature fault, if the temperature is within the level 2 fault threshold range, the DSP transmits an over-temperature signal to the VCU, and the VCU controls the fan to start rotating. As the temperature rises, the speed increases continuously, and the water flow rate also increases, thereby making the heat dissipation faster. When the temperature drops below the threshold, the fan receives feedback and stops running, which can quickly and effectively solve the system's over-temperature fault. When the temperature reaches the level 3 fault threshold range, the power is limited and the fan speed is adjusted to control the flow rate of water in the water pipe until the fault alarm is lifted.

[0031] In a solar car, the photovoltaic inverter converts the electricity generated by the photovoltaic panels into direct current, which is then converted into a voltage range suitable for the motor controller through a DC-DC converter to drive the vehicle. The following describes the internal workings and electrical principles of the core components of each module:

[0032] Photovoltaic inverters convert the signals generated by photovoltaic modules into signals required by DC-DC converters. Under the on and off control of power electronic switches, the required voltage range is obtained. The inverter controls the on / off ratio (duty cycle) of the switching device, thereby converting the periodic "square wave" into a "sine wave" of the required frequency. In addition, the inverter also contains a filtering module to reduce or eliminate high-frequency harmonic distortion and noise in the output AC waveform to ensure the quality of power.

[0033] The motor controller is a key component for controlling the operation of the motor. It receives external signals (such as speed instructions, position instructions, etc.) and converts them into control signals that the motor can recognize, thereby achieving precise control of motor speed, direction, torque and other parameters. It contains complex control circuits and power conversion circuits. The control circuit is responsible for analyzing external signals and generating corresponding control instructions; the power conversion circuit converts the current emitted by the upper bus into a PWM signal suitable for driving the motor according to the control instructions by turning on and off the power electronic switch.

[0034] A DC-DC converter is a device that converts electrical energy of one voltage value into electrical energy of another voltage value in a direct current circuit. In the present invention, the DC-DC converter can be used to match the voltage level between the photovoltaic inverter and the motor controller to ensure efficient energy transmission. It realizes voltage conversion by controlling the on and off of the switching device, as well as the charging and discharging process of energy storage elements such as inductors and capacitors. When the switch is closed, the power supply charges the inductor and capacitor and supplies power to the load; when the switch is disconnected, the inductor will generate a reverse voltage in order to prevent the current from suddenly changing, and a loop is formed through the diode to achieve the purpose of freewheeling, and continue to supply power to the motor drive module. By controlling the duty cycle of the switch, the output voltage can be accurately adjusted.

[0035] The entire system converts and transmits signals based on the timing sequence and communicates with the vehicle in real time. In this process, the purpose of the vehicle power on and off is to establish low and high voltage processes for the vehicle, and complete the ready process through detection, self-test, etc., so that the vehicle is in a ready state and can be driven at any time. The following describes some functional control logic of the motor controller MCU:

[0036] During the vehicle power-on process, the MCU receives the VCU hard-line signal or network management signal to wake up and perform an initialization self-test and feed back the self-test result MCU_St_Work:Standby status to the VCU, and then performs a series of subsequent tasks.

[0037] During the vehicle power-off process, the MCU power-off discharge voltage signal DC-link_Voltage is fed back to the VCU. After the VCU disconnects the hard-line wake-up signal, the MCU goes into sleep mode and the entire system stops working.

[0038] The photovoltaic panels of the photovoltaic inverter generate a DC voltage of about 20 to 48V, and send a voltage of about 48 to 58V to the battery through the DC-DC converter, which is converted into a 14V voltage for driving power supply. In this process, the voltage is also collected to the CPU. The DC-DC converter is filtered through the Boost drive to the CPU, and then exchanges information with the CAN bus. The CPU outputs six PWM signals to the IGBT. At the same time, the voltage of the photovoltaic inverter and the voltage of the battery share the bus, and finally the motor is driven by the IGBT to complete the driving control of the vehicle.

[0039] When the entire powertrain system is powered on normally, the photovoltaic inverter transmits a signal to the DC-DC converter, and the DC-DC converter divides the DC power after inversion and rectification into two parts. One part is sent to the motor controller, and together with the original power, it supplies the motor to meet the power demand of the whole vehicle. The other part of the DC power will be stored in the battery for backup, which can provide continuous power supply when the original power is insufficient. At the same time, the photovoltaic inverter, DC-DC converter and motor controller will transmit signals to the DSP for signal collection, ensuring that the current generated by the photovoltaic power generation module can be safely and stably transmitted to the electronic control system.

[0040] When the entire powertrain system is powered off, the DSP chip sends a signal to interrupt the DC-DC converter from transmitting current to the motor controller, but the photovoltaic inverter can still supply power to the DC-DC converter, which continues to charge the battery after inverter rectification. When the battery is fully charged, it is fed back to the DSP, and the DSP chip interrupts the operation of the photovoltaic power generation module, thus ending the system cycle.

[0041] When the entire powertrain system fails, the DSP chip interacts with the vehicle's VCU to cut off signal transmission between each module; if a temperature rise is detected that reaches the threshold monitoring condition, the fan in the thermal management module starts working and completes the temperature rise balance according to the thermal management control strategy.

[0042] Functional interpretation of each node related to this system:

[0043] VCU features:

[0044] 1. After receiving the KEYON wake-up signal or the network signal, the VCU performs self-test and wakes up the DCDC by hard wire;

[0045] 2. After receiving the KEYOFF power-off signal, the VCU disconnects the DCDC hard line to wake up; and after controlling other modules to power off, they enter sleep mode according to network management;

[0046] 3. VCU receives the main positive and precharge relay status signals (BMS_Pos BattContSts, BMS_PrechargeContSts), self-test signal BMS_workingMode:Waiting and fault level signal BMS_DischgActiveFltCategory fed back by BMS;

[0047] 4. VCU receives the power-on signal BMS_workingMode:Driving sent by BMS;

[0048] 5. VCU receives the MCU self-test result MCU_St_Work:Standby and the fault level signal MCU_FaultLevel; as well as the MCU_St_Work:HV_Ready signal sent by the MCU;

[0049] 6. After the VCU receives the power-on completion signal from the BMS and MCU, the control instrument displays the "Ready" status;

[0050] 7. VCU sends the BMS high-voltage signal VCUControl:Connect and low-voltage signal VCUControl:Disconnect according to the high-voltage power-on condition;

[0051] 8. VCU sends the torque request zero command TorqueCommand to MCU;

[0052] 9. VCU receives the battery bus current signal BMS_BatteryCurrent sent by BMS;

[0053] 10. When the VCU detects that the absolute value of the bus current is less than 1A, it sends a VCUControl: Disconnect signal to the BMS;

[0054] 11. VCU receives the disconnection status of the main positive relay fed back by BMS;

[0055] 12. VCU receives the voltage signal DC-link_Voltage sent by MCU;

[0056] 13. When the VCU fails to receive signals from other controllers, it enters sleep mode according to network management.

[0057] BMS functions:

[0058] 1. BMS receives the KEYON wake-up signal or the network wake-up signal to wake up and self-check, and feeds back the self-check result BMS_workingMode:Waiting to VCU;

[0059] 2. BMS receives the power-on signal VCUControl: Connect sent by VCU;

[0060] 3. BMS receives the power-off signal VCUControl: Disconnect sent by VCU, and power-off with load is not allowed;

[0061] 4. BMS sends BMS_workingMode:DateWriting signal and BMS_workingMode:Sleep to VCU, and then enters sleep state according to network management.

[0062] MCU functions:

[0063] 1. MCU receives VCU hard-line signal or network management signal to wake up and perform initialization self-test;

[0064] 2. MCU feeds back the self-test result MCU_St_Work:Standby status to VCU;

[0065] 3. MCU feeds back MCU_St_Work:HV_Ready, MCU_Mode:Zerotorquemode and MCU_FaultLevel to VCU;

[0066] 4. MCU receives the torque request command TorqueCommand, enable signal VCU_bMCUEnable: Enable / Disable, mode request signal VCU_ModeReq, speed signal VCU_SpeedReqCmd, etc. sent by VCU;

[0067] 5. MCU receives the active discharge command VCU_bMCUActDischgCmd sent by VCU;

[0068] 6. After the key is turned to the OFF position and the VCU disconnects the hard-wired wake-up signal, the MCU enters sleep mode based on network management.

[0069] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. An integrated optical drive control system for new energy vehicles, characterized in that: The control system includes a DSP controller, a photovoltaic inverter, a motor controller, and a DCDC converter; the output power supply end of the solar panel arranged on the roof is connected to the photovoltaic inverter, and the photovoltaic inverter outputs a voltage matching the working voltage of the motor controller to the DCDC converter; the DC-DC converter inverts and rectifies the received voltage, and then the DSP controller distributes and controls it to power the motor drive module of the motor controller and charge the power battery respectively; the DSP controller is connected to the vehicle network through the CAN Bus to receive upper-level control instructions; the output end of the DSP controller is respectively connected to the motor controller and the DCDC converter, and is used to control them to execute the upper-level control instructions.

2. The optical drive integrated control system of a new energy vehicle as claimed in claim 1, characterized in that: The control system also includes a thermal management module, which is used to perform thermal management control on the photovoltaic inverter, motor controller, DCDC converter, and power battery; it is connected to the thermal management module by a DSP controller, and the thermal management module is driven and controlled by the DSP controller and forwards transmission signals.

3. The optical drive integrated control system of a new energy vehicle as claimed in claim 1, characterized in that: The DSP controller is connected to a voltage sensor, a current sensor, and a temperature sensor, and the voltage sensor, current sensor, and temperature sensor are used to collect and monitor the voltage, current, and temperature of each module in the control system.

4. The optical drive integrated control system for a new energy vehicle as claimed in claim 1, characterized in that: The modules in the control system are integrated in a housing, and the DSP controller receives upper-level control signals and performs interactive control with the modules in the housing.

5. The optical drive integrated control system for new energy vehicles as claimed in claim 1, characterized in that: The photovoltaic inverter converts the DC power with large fluctuations generated by the photovoltaic panel into a required stable voltage signal, which includes a maximum power point tracking MPPT function module and a power quality regulation module; the photovoltaic inverter receives the DC power generated by the photovoltaic panel and provides it to the DC-DC converter; the motor controller is responsible for controlling the running state of the motor, the motor controller receives the DC power generated by the DC-DC converter and drives the motor to run after conversion, and at the same time feeds back the control state signal to the DSP controller so that the DSP controller can manage multiple signals; The DC-DC converter converts the DC voltage output by the photovoltaic inverter into a voltage range suitable for use by the motor controller, thereby matching the photovoltaic inverter output voltage with the voltage required by the motor controller.

6. The optical drive integrated control system for new energy vehicles as claimed in claim 1, characterized in that: In the thermal management module of the control system, a water cooling pipe is arranged on the inner wall of the shell in the control system and controls the heat dissipation of each module of the control system; a fan with controllable speed is fixed at the beginning of the water cooling pipe, and the combination of the beginning of the water cooling pipe and the fan is arranged around the motor controller and / or the driving motor to realize heat dissipation control; the DSP main control chip samples the temperature and transmits a signal to the VCU in real time, controls the speed of the fan to control the flow rate of the water in the water pipe, and thereby achieves a temperature rise balance for the entire system.

7. The optical drive integrated control system for a new energy vehicle as claimed in any one of claims 1 to 6, characterized in that: The photovoltaic inverter converts the signal generated by the photovoltaic module into the signal required by the DC-DC converter, and obtains the required voltage range under the on and off control of the power electronic switch. The photovoltaic inverter also includes a filtering module to reduce or eliminate high-frequency harmonic distortion and noise in the output AC waveform to ensure the quality of power.

8. The optical drive integrated control system for a new energy vehicle as claimed in any one of claims 1 to 6, characterized in that: The motor controller receives signals from the DSP controller and converts them into control signals that the motor can recognize, thereby achieving precise control of parameters such as motor speed, direction, and torque; the motor controller is internally provided with a control circuit and a power conversion circuit; the control circuit is responsible for parsing external signals and generating corresponding control instructions; the power conversion circuit converts the current emitted by the upper bus into a PWM signal suitable for driving the motor according to the control instructions by turning on and off the power electronic switch.

9. A control method for an optical drive integrated control system of a new energy vehicle as claimed in any one of claims 1 to 8, characterized in that: When the system is powered on normally, the photovoltaic inverter transmits a signal to the DC-DC converter, and the DC-DC converter divides the inverted and rectified DC power into two parts: one part is transmitted to the motor controller, and together with the original battery power supply, it supplies the motor to meet the power demand of the whole vehicle; the other part of the DC power is directly sent to the power battery for storage in the battery for standby; at the same time, the photovoltaic inverter, DCDC converter and motor controller will transmit signals to the DSP controller for signal acquisition, and the DSP controller will control the DCDC converter and motor controller according to the acquired signals to ensure that the current generated by the photovoltaic power generation module can be safely and stably transmitted to the electronic control system.

10. The control method of the optical drive integrated control system of a new energy vehicle as claimed in claim 9, characterized in that: When the system is powered off, the DCS controller receives upper-level control instructions through the CAN Bus; then the DSP controller sends a signal corresponding to the upper-level control instruction to control the interruption of the DCDC converter to transmit current to the motor controller, and at the same time controls the photovoltaic inverter to transmit electric energy to the DC-DC converter, which is converted by the DCDC converter and continuously charged into the battery. When the battery is fully charged, it is fed back to the DSP controller, and the DSP chip interrupts the operation of the photovoltaic power generation module.

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