Intelligent high-voltage power distribution device and power distribution method

Abstract

The invention relates to an intelligent high-voltage power distribution device, which comprises a mechanical shell, and a driving board module, a mother board module, a control board module, a contactor adapter board module, an acquisition control board module, a voltage acquisition board module, a contactor combination module and an insulation monitoring module which are arranged in the mechanical shell, according to the invention, information such as power supply output states, voltage and current parameters and the like of each electric device can be monitored, operation conditions of the electric devices can be timely mastered, relatively complex high-voltage power distribution logic control is realized, and multi-path high-voltage power distribution intelligent management requirements are met. Meanwhile, the running state of the electric equipment can be monitored, the functions of over-current and over-voltage protection and the like can be provided, state and fault alarm information can be reported through a bus, and reliable work of the electric equipment is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent power distribution, and in particular relates to an intelligent high-voltage power distribution device and a power distribution method for extra-heavy vehicles. Background Art

[0002] In recent years, with the development of informatization of special vehicles, the requirements for electrification and intelligence of special vehicles are getting higher and higher, and the power supply requirements of various controllers and actuators are becoming more and more complex. At present, the high-voltage distribution device of special vehicles relies on external electronic control units for control, which cannot guarantee the correctness of control, cannot monitor the status of devices such as relay boxes and fuses in real time, cannot alarm in time, has many internal high and low voltage wiring harnesses, and has irregular distribution, is messy inside, and cannot achieve high and low voltage separation. At the same time, the structure of the high-voltage distribution device is relatively single, and it is difficult to implement more complex logic control, and it is difficult to manage high-voltage distribution branches, which cannot meet the needs of intelligent distribution management. Summary of the invention

[0003] The present invention provides an intelligent high-voltage power distribution device and a power distribution method, and the technical problem to be solved is: not only can the power supply output status and voltage, current parameters and other information of each electrical equipment be monitored, but the operating conditions of the electrical equipment can also be grasped in time, and more complex high-voltage power distribution logic control can be realized to meet the needs of intelligent management of multi-channel high-voltage power distribution.

[0004] In order to solve the above technical problems, the present invention provides an intelligent high-voltage power distribution device, which is characterized in that it includes a drive board module, a motherboard module, a control board module, a contactor adapter board module, an acquisition control board module, a voltage acquisition board module, a contactor combination module, and an insulation monitoring module; the motherboard module provides power supply and conversion interface for the drive board module and the control board module; the control board module realizes bus transceiver communication, current and voltage monitoring, and sequential power distribution and protection of high-voltage components; the contactor adapter board module provides a connection interface for the drive board module and the contactor combination module; the acquisition control board module is used for data acquisition and processing of the voltage acquisition board module and the current sensor to maintain the correct linear relationship between the DC signal input and output; the voltage acquisition board module is used for high voltage acquisition and conversion; the contactor combination module is used to realize power distribution, current and voltage monitoring and protection of high-voltage components.

[0005] A power distribution method based on an intelligent high-voltage power distribution device is characterized in that: power distribution control is performed through a contactor combination module, and the control strategy step is as follows:

[0006] When the voltage of the supercapacitor is lower than the voltage of the power battery, the voltage output by the power battery passes through 500A fuse 1, contactor J1, gold resistor 2 / contactor J2, high-power DC / DC, gold resistor 1 / contactor J7, contactor J8, 500A fuse 2, and finally output to the supercapacitor end, executing the Buck constant current charging of the circuit to achieve fast charging of the supercapacitor;

[0007] When the supercapacitor voltage is greater than the power battery voltage and less than the bus voltage of 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, and finally flows into the supercapacitor end, executing the Bost constant current charging of the circuit to realize the boost charging of the supercapacitor to 900V;

[0008] When the supercapacitor voltage is equal to 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, and finally flows into the 1-3 bridge motor driver to execute the Bost constant voltage discharge of the circuit and realize the constant voltage output of the busbar 900V;

[0009] When the bus voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller to execute the pre-charging of the generator controller and realize the start of the generator;

[0010] When the bus voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and contactor J9 form an enhanced hybrid power circuit to realize the hybrid power distribution mode of special vehicles.

[0011] The control strategy of the contactor combination module is as follows:

[0012] When the power battery voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller to execute the pre-charging of the generator controller and realize the start of the generator;

[0013] When the power battery voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and contactor J9 form a simple hybrid power circuit to realize a simple power distribution mode for special vehicles.

[0014] Beneficial effects: The present invention can not only monitor the power supply output status and voltage, current parameters and other information of each electrical equipment, but also timely grasp the operating conditions of the electrical equipment, realize more complex high-voltage power distribution logic control, and meet the needs of multi-channel high-voltage power distribution intelligent management.

[0015] The present invention has a simple structure and is convenient to control. By receiving bus control command information, the high-voltage contactor is controlled to realize sequential power distribution and protection of high-voltage components such as a first-bridge wheel hub drive motor, a second-bridge wheel hub drive motor, a third-bridge wheel hub drive motor, a wheel hub motor cooling electric pump, a water pump and a fan, a DC900 / DC28 power converter, etc., and the whole vehicle grid connection of a high-voltage generator controller, a power battery, a super capacitor, and a bidirectional DCDC is completed. At the same time, the operating status of the electrical equipment can be monitored and the over-current and over-voltage protection functions can be provided. The status and fault alarm information can be reported through the bus to ensure the reliable operation of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the electrical principle of the system of the present invention

[0017] Figure 2 The schematic diagram of the contactor combination module of the present invention is

[0018] Figure 3 The schematic diagram of the control panel module unit of the present invention is

[0019] Figure 4 The motherboard module schematic diagram of the present invention

[0020] Figure 5 This is the principle diagram of the acquisition control board module of the present invention

[0021] Figure 6 This is a schematic diagram of the voltage acquisition board module of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below.

[0023] The present invention proposes an intelligent high-voltage power distribution device, comprising a mechanical housing and a drive board module, a motherboard module, a control board module, a contactor adapter board module, a collection control board module, a voltage collection board module, a contactor combination module, and an insulation monitoring module arranged in the mechanical housing;

[0024] The drive board module, motherboard module, and control board module are all arranged in the low-pressure cabin, and the contactor adapter board module, acquisition control board module, voltage acquisition board module, contactor combination module, and insulation monitoring module are arranged in the high-pressure cabin; the low-pressure cabin and the high-pressure cabin are connected by two through-wall aviation plugs;

[0025] The driver board module consists of 12 drive channels. Each drive channel adopts optoelectronic isolation and push-pull output circuit to drive the PMOS tube to control the on and off of the contactor. Optoelectronic isolation achieves signal isolation through optocoupler. The push-pull output circuit can improve the current driving capability.

[0026] The motherboard module consists of a 24V to 12V power conversion circuit, a 24V to 5V power conversion circuit, a 5V to 3.3V linear power circuit, a 10-channel IO output drive circuit, and a 24-channel acquisition and conditioning circuit. It mainly provides power supply and conversion interface for the driver board module and the control board module.

[0027] The control board module consists of MCU, 12-channel AD acquisition circuits, 22-channel IO output circuits, 22-channel IO input circuits, RS232 integrated circuits, CAN integrated circuit 1, CAN integrated circuit 2, and power integrated circuits. It mainly realizes the bus transceiver communication, current and voltage monitoring, and sequential power distribution and protection of the high-voltage distribution box.

[0028] The contactor adapter board module consists of 12 drive relay interfaces, which mainly provide connection interfaces for the drive board module and the contactor combination module.

[0029] The acquisition control board module consists of a 24V to 5V power conversion circuit, a 24V to ±15V power conversion circuit, and a 12-channel analog acquisition conversion isolation circuit. It is mainly responsible for data acquisition and processing of the voltage acquisition board module and the current sensor to maintain the correct linear relationship between DC signal input and output.

[0030] The voltage acquisition board module consists of 6 high-voltage acquisition circuits and leakage detection circuits, and is mainly responsible for the acquisition and conversion of high voltage.

[0031] The contactor combination module consists of 400A contactors J1-J10, 150A contactors J11-J12, 50A fuse 1, 50A fuse 2, 500A fuse 1, 500A fuse 2, golden resistor 1, golden resistor 2, and current sensors 1-7; it mainly realizes the power distribution strategy, current and voltage monitoring and protection of high-voltage components.

[0032] The system power supply and control interface aviation plug is connected to the motherboard module CY1 interface, which is mainly used for the status output of the low-voltage system power supply, power distribution request and power distribution completion instructions of the high-voltage distribution box, and for receiving and forwarding system CAN information data.

[0033] The signal of the pre-charge control interface aviation plug is connected in sequence through the motherboard module CY2 interface, the control board module, the drive board module, the CY4 interface, the through-wall aviation plug 2, the contactor adapter board template, the contactor combination module, and the wiring compartment 2. It is mainly used to control the pre-charge of the 1-3 bridge motor driver and collect the pre-charge completion status, and at the same time control the power distribution of the 1-3 bridge motor driver and auxiliary load equipment.

[0034] The DC / DC power supply and control interface aviation plug is connected to the motherboard module CY2 interface, control board module, driver board module, CY4 interface, through-wall aviation plug 2, contactor adapter board template, contactor combination module, and wiring compartment. It mainly performs charging logic processing for high-power DCDC, power battery, and supercapacitor, as well as CAN bus data communication of high-power DCDC.

[0035] The FlexRay bus interface aviation plug is connected to the motherboard module CY2 interface and the control board module, and is mainly used to receive control instructions from the vehicle terminal and send data such as current and voltage of the high-voltage distribution box.

[0036] The debugging interface aviation plug is connected to the motherboard module CY3 interface and the control board module, and is mainly used for program downloading and debugging of the control board module.

[0037] Wiring compartment three is connected to the contactor combination module, and is mainly responsible for providing 900V power to the contactor combination module and power distribution control of the water pump fan and resistor.

[0038] The vehicle-mounted terminal sends a power distribution request command through the FlexRay bus interface aviation plug, reaches the control board module through the CY2 interface of the motherboard module, and after the control board module receives the power distribution request command, it is output through the driver board module, passes through the through-wall aviation plug 2 and the contactor adapter module, and reaches the contactor combination module. The contactor combination module outputs to the wiring compartment 1 and wiring compartment 2 through the high-voltage power distribution strategy to complete the power-on of the high-voltage electrical equipment.

[0039] After the contactor combination module completes power distribution, the working voltage of the load is converted into 0-4.5V analog voltage through the voltage acquisition board module. The acquisition control board module transmits the 0-4.5V analog voltage to the control board module for processing through the subtraction op amp isolation circuit. The control board module sends the processed voltage data to the flexray bus interface aviation plug through the CY2 interface of the motherboard module.

[0040] After the contactor combination module completes power distribution, the working current of the load is directly transmitted through the acquisition control board module to the 0-4.5V analog voltage through the subtraction op amp isolation circuit to the control board module for processing. The control board module sends the processed voltage data to the flexray bus interface aviation plug through the CY2 interface of the motherboard module.

[0041] The high-power DC / DC working mode data is sent to the control board module through the CAN of the DC / DC power supply and control interface aviation plug. The control board module reads the data received in the CAN buffer through the MCU, converts the data into a level signal according to the bus protocol, and controls the output of the driver board module through the level signal. The output signal is connected to the contactor combination module to complete the power distribution of the high-voltage load equipment.

[0042] like Figure 2 As shown, when the intelligent high-voltage power distribution device is in pre-charging mode, the control board module drives the relay of the motherboard module through the IO signal, and outputs the high-level signal to the pre-charging control interface aviation plug through the CY2 interface of the motherboard module. The 1-3 bridge motor driver collects the high level and starts pre-charging. After the driver pre-charging is completed, the 1-3 bridge motor driver outputs a high level; the high level output by the 1-3 bridge motor driver flows into the CY2 interface of the motherboard module through the pre-charging control interface aviation plug. After the control board module collects the high-level data of the CY2 interface, it converts the level data into CAN bus data and sends it to the vehicle terminal. The function of controlling the pre-charging of the 1-3 bridge motor driver and collecting the pre-charging completion status is realized.

[0043] like Figure 2 As shown in the figure, the CAN bus of the insulation monitoring module is connected to the CY5 interface of the motherboard module through the acquisition control board module and the through-wall aviation plug 1. When the control board module receives the CAN bus data of the insulation monitoring module transmitted from the CY5 interface, it converts the CAN to Flexray data and sends the data to the vehicle terminal through Flexray for display. Real-time monitoring of insulation data in high-voltage environments is achieved and the safety of personnel is guaranteed.

[0044] like Figure 2-3 As shown, when the on-board terminal sends a power distribution request command for the "enhanced hybrid mode", the command signal enters through the FlexRay bus interface aviation plug, reaches the control board module through the CY2 interface of the motherboard module, and after the control board module receives the power distribution request instruction, it is output through the drive board module, passes through the through-wall aviation plug 2 and the contactor adapter module, and reaches the contactor combination module. Through the control strategy 1 of the contactor combination module, it outputs the wiring compartment 1 and the wiring compartment 2 to complete the power-on of the high-voltage electrical equipment.

[0045] An intelligent high-voltage power distribution method based on an intelligent high-voltage power distribution device comprises the following steps:

[0046] Control strategy 1 of contactor combination module:

[0047] When the supercapacitor voltage is lower than the power battery voltage, the power battery output voltage passes through 500A fuse 1, contactor J1, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J8, 500A fuse 2, and is finally output to the supercapacitor end, executing the Buck constant current charging of the circuit to achieve fast charging of the supercapacitor.

[0048] When the supercapacitor voltage is greater than the power battery voltage and less than the bus voltage of 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, and finally flows into the supercapacitor end, executing the Bost constant current charging of the circuit to realize the boost charging of the supercapacitor to 900V.

[0049] When the supercapacitor voltage is equal to 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, and finally flows into the 1-3 bridge motor driver, executing the Bost constant voltage discharge of the circuit and realizing a constant voltage output of 900V on the bus.

[0050] When the bus voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller, executes the pre-charging of the generator controller, and realizes the start-up of the generator.

[0051] When the bus voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and contactor J9 form an enhanced hybrid power circuit to realize the hybrid power distribution mode of special vehicles.

[0052] like Figure 2-3As shown in the figure, when the vehicle terminal sends a power distribution request command of "simple hybrid mode", the command signal enters through the FlexRay bus interface aviation plug, reaches the control board module through the CY2 interface of the motherboard module, and after the control board module receives the power distribution request instruction, it is output through the driver board module, passes through the through-wall aviation plug 2 and the contactor transfer module, and reaches the contactor combination module. Through the control strategy 2 of the contactor combination module, it outputs the wiring compartment 1 and the wiring compartment 2, completing the power-on of the high-voltage electrical equipment;

[0053] Control strategy 2 of contactor combination module:

[0054] When the power battery voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller to execute the pre-charging of the generator controller and start the generator.

[0055] When the power battery voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and contactor J9 form a simple hybrid power circuit to realize a simple power distribution mode for special vehicles.

[0056] The invention has a simple structure and is easy to control. By receiving bus control command information, the high-voltage contactor is controlled to realize sequential power distribution and protection of high-voltage components such as the first-bridge wheel hub drive motor, the second-bridge wheel hub drive motor, the third-bridge wheel hub drive motor, the wheel hub motor cooling electric pump, the water pump and the fan, and the DC900 / DC28 power converter on the vehicle, and completes the whole vehicle grid connection of the high-voltage generator controller, the power battery, the super capacitor, and the bidirectional DCDC. At the same time, the operating status of the electrical equipment can be monitored and the over-current and over-voltage protection functions can be provided. The status and fault alarm information can be reported through the bus to ensure the reliable operation of the electrical equipment.

[0057] The intelligent high-voltage power distribution device supports two power modes, including enhanced hybrid power (generator + battery + capacitor) mode and simple hybrid power mode (generator + battery);

[0058] Each output of the intelligent high-voltage power distribution device has an on / off function, and the high-voltage output has a soft start function to prevent large current shocks, arcing and burning of the contactor when the contactor is in action, and burn the contactor;

[0059] The control unit of the intelligent high-voltage power distribution device monitors the status of each input and output of the power distribution, samples the voltage and current in real time, and uploads the monitoring status through CAN bus and FlexRay bus communication;

[0060] The intelligent high-voltage power distribution device has high-low voltage isolation and leakage detection functions to ensure the safety of high-voltage power use;

[0061] The control board module MCU processor adopts a 2-bit floating-point DSP28335 processor, supporting 12-channel AD acquisition, 22-channel IO output, 22-channel IO input, 1-channel 232 bus, 2-channel CAN bus, and 1-channel FlexRay bus.

[0062] The control panel module is the core of the intelligent high-voltage power distribution device. It is used for data collection, processing, logic operation, bus communication and other functions. It mainly realizes the bus transceiver communication of the high-voltage distribution box, current and voltage monitoring, and sequential power distribution and protection of high-voltage components.

[0063] The driver board module supports 12 high-side drivers. Each driver channel adopts optoelectronic isolation and push-pull output circuit to drive the PMOS tube to control the on and off of the contactor. The driving load capacity can reach 20A.

[0064] The motherboard module supports 12V, 5V, 3.3V power output, 10-way IO output, and 24-way IO conditioning and acquisition, and mainly provides power supply and conversion interface for the driver board module and the control board module.

[0065] The acquisition control board module supports 5V and ±15V power output and 12-channel analog conversion. It is mainly responsible for data acquisition and processing of the voltage acquisition board module and current sensor, and maintains the correct linear relationship between DC signal input and output.

[0066] The voltage acquisition board module supports 6-channel high voltage acquisition and leakage detection functions, and is mainly responsible for high voltage acquisition and conversion.

[0067] The contactor combination module supports 7 400A loads, 2 150A loads, and 7 current sensors, mainly realizing the power distribution strategy, current and voltage monitoring and protection of high-voltage components.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent high-voltage power distribution device, characterized in that: It includes a drive board module, a motherboard module, a control board module, a contactor adapter board module, an acquisition control board module, a voltage acquisition board module, a contactor combination module, and an insulation monitoring module; the motherboard module provides power supply and conversion interface for the drive board module and the control board module; the control board module realizes bus transceiver communication, current and voltage monitoring, and sequential power distribution and protection of high-voltage components; the contactor adapter board module provides a connection interface for the drive board module and the contactor combination module; the acquisition control board module is used for data acquisition and processing of the voltage acquisition board module and the current sensor to maintain the correct linear relationship between the DC signal input and output; the voltage acquisition board module is used for high voltage acquisition and conversion; the contactor combination module is used to realize power distribution, current and voltage monitoring and protection of high-voltage components.

2. An intelligent high-voltage power distribution device according to claim 1, characterized in that: The drive board module, the motherboard module, the control board module, the contactor adapter board module, the acquisition control board module, the voltage acquisition board module, the contactor combination module and the insulation monitoring module are all arranged in the mechanical housing.

3. The intelligent high-voltage power distribution device according to claim 1, characterized in that: The drive board module, motherboard module, and control board module are all arranged in the low-pressure cabin, and the contactor adapter board module, acquisition control board module, voltage acquisition board module, contactor combination module, and insulation monitoring module are arranged in the high-pressure cabin.

4. The intelligent high-voltage power distribution device according to claim 3, characterized in that: The low-pressure chamber and the high-pressure chamber are connected by a through-wall aviation plug.

5. The intelligent high-voltage power distribution device according to claim 1, characterized in that: The system power supply and control interface aviation plug is connected to the motherboard module CY1 interface, which is used for the status output of low-voltage system power supply, power distribution request and power distribution completion instruction, and for receiving and forwarding system CAN information data; the pre-charge control interface aviation plug is connected to the motherboard module CY2 interface, which is used to control the pre-charge of the 1-3 bridge motor driver and collect the pre-charge completion status, and at the same time control the power distribution of the 1-3 bridge motor driver and auxiliary load equipment; the DC / DC power supply and control interface aviation plug is connected to the motherboard module CY2 interface, which is used for charging logic processing of high-power DCDC, power battery, and supercapacitor and CAN bus data communication of high-power DCDC.

6. The intelligent high-voltage power distribution device according to claim 1, characterized in that: The vehicle-mounted terminal sends a power distribution request command through the FlexRay bus interface aviation plug, reaches the control board module through the CY2 interface of the motherboard module, and after the control board module receives the power distribution request command, it is output through the driver board module, passes through the through-wall aviation plug 2 and the contactor adapter module, and reaches the contactor combination module. The contactor combination module outputs to the wiring compartment 1 and wiring compartment 2 through the high-voltage power distribution strategy to complete the power-on of the high-voltage electrical equipment.

7. The intelligent high-voltage power distribution device according to claim 1, characterized in that: After the contactor combination module completes power distribution, the working voltage of the load is converted into 0-4.5V analog voltage through the voltage acquisition board module. The acquisition control board module transmits the 0-4.5V analog voltage to the control board module for processing through the subtraction operational amplifier isolation circuit. The control board module sends the processed voltage data to the flexray bus interface aviation plug through the CY2 interface of the motherboard module. After the contactor combination module completes power distribution, the working current of the load is directly transmitted through the acquisition control board module to the 0-4.5V analog voltage through the subtraction op amp isolation circuit to the control board module for processing. The control board module sends the processed voltage data to the flexray bus interface aviation plug through the CY2 interface of the motherboard module.

8. The intelligent high-voltage power distribution device according to claim 1, characterized in that: The high-power DC / DC working mode data is sent to the control board module through the CAN of the DC / DC power supply and control interface aviation plug. The control board module reads the data received in the CAN buffer through the MCU, converts the data into a level signal according to the bus protocol, and controls the output of the driver board module through the level signal. The output signal is connected to the contactor combination module to complete the power distribution of the high-voltage load equipment; When the intelligent high-voltage power distribution device is in the pre-charging mode, the control board module drives the relay of the motherboard module through the IO signal, and outputs the high-level signal to the pre-charging control interface aviation plug through the CY2 interface of the motherboard module. The 1-3 bridge motor driver collects the high level and starts pre-charging. After the driver pre-charging is completed, the 1-3 bridge motor driver outputs a high level; the high level output by the 1-3 bridge motor driver flows into the CY2 interface of the motherboard module through the pre-charging control interface aviation plug. After the control board module collects the high-level data of the CY2 interface, it converts the level data into CAN bus data and sends it to the vehicle terminal; The CAN bus of the insulation monitoring module is connected to the CY5 interface of the motherboard module through the acquisition control board module and the through-wall aviation plug 1. When the control board module receives the CAN bus data of the insulation monitoring module transmitted from the CY5 interface, it converts the CAN to Flexray data and sends the data to the vehicle terminal through Flexray for display; When the vehicle terminal sends a power distribution request command for "enhanced hybrid mode", the command signal enters through the FlexRay bus interface aviation plug, reaches the control board module through the CY2 interface of the motherboard module, and after the control board module receives the power distribution request instruction, it is output through the driver board module, passes through the through-wall aviation plug 2 and the contactor adapter module, and reaches the contactor combination module. Through the control strategy 1 of the contactor combination module, it outputs the wiring compartment 1 and the wiring compartment 2 to complete the power-on of the high-voltage electrical equipment.

9. A power distribution method based on an intelligent high-voltage power distribution device, characterized in that: The power distribution control is carried out through the contactor combination module, and the control strategy is as follows: When the voltage of the supercapacitor is lower than the voltage of the power battery, the voltage output by the power battery passes through 500A fuse 1, contactor J1, gold resistor 2 / contactor J2, high-power DC / DC, gold resistor 1 / contactor J7, contactor J8, 500A fuse 2, and finally output to the supercapacitor end, executing the Buck constant current charging of the circuit to achieve fast charging of the supercapacitor; When the supercapacitor voltage is greater than the power battery voltage and less than the bus voltage of 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, and finally flows into the supercapacitor end, executing the Bost constant current charging of the circuit to realize the boost charging of the supercapacitor to 900V; When the supercapacitor voltage is equal to 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, and finally flows into the 1-3 bridge motor driver to execute the Bost constant voltage discharge of the circuit and realize the constant voltage output of the busbar 900V; When the bus voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller to execute the pre-charging of the generator controller and realize the start of the generator; When the bus voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J6, golden resistor 2 / contactor J2, high-power DC / DC, golden resistor 1 / contactor J7, contactor J3, 500A fuse 2, supercapacitor end, contactor J4, contactor J5, contactor J10, and contactor J9 form an enhanced hybrid power circuit to realize the hybrid power distribution mode of special vehicles.

10. An intelligent high-voltage power distribution method according to claim 9, characterized in that: The control strategy of the contactor combination module is as follows: When the power battery voltage is 900V, the voltage output by the power battery passes through 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and finally flows into the generator range extender controller to execute the pre-charging of the generator controller and realize the start of the generator; When the power battery voltage is 900V and the engine is started, the engine, power battery, 500A fuse 1, contactor J1, contactor J4, contactor J5, contactor J10, and contactor J9 form a simple hybrid power circuit to realize a simple power distribution mode for special vehicles.

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