An integrated all-in-one SiC controller system for buses

Abstract

This utility model discloses an integrated multi-functional SiC controller system for buses, including a main drive motor controller, a high-voltage power distribution module, and an auxiliary drive control module. The main drive motor controller and the auxiliary drive control module distribute the high voltage of the entire vehicle to different high-voltage power consumption units through the high-voltage power distribution module. The multi-functional SiC controller system includes a drive pre-charge circuit and a power distribution pre-charge circuit, each connected to two positive inputs of the power battery. Both the drive pre-charge circuit and the power distribution pre-charge circuit include two parallel mechanical switches, one of which is connected in series with a pre-charge resistor. The drive pre-charge circuit is used for pre-charging the main drive motor controller, steering control drive module, air compressor control drive module, DC / DC module, and timing monitoring system. The power distribution pre-charge circuit is used for pre-charging the air conditioning / water-cooled unit, electric heating, electric defrosting, first battery heating component, and second battery heating component. This utility model has a simple and compact structure, higher system integration, and saves more space.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle control system technology, and in particular relates to an integrated all-in-one SiC controller system for buses. Background Technology

[0002] With the automotive industry rapidly moving towards intelligent development, all components in new energy vehicles are moving towards higher efficiency, integration, and lightweighting. Existing models mainly focus on integrating drive controllers, motors, and reducers, neglecting the integration of power distribution for air conditioning, electric heating, and electric defrosting in the thermal management system. Summary of the Invention

[0003] The purpose of this invention is to further integrate and deeply fuse various components in new energy vehicles. It proposes an integrated all-in-one SiC controller system for buses, which saves space for the whole vehicle, reduces wiring harness assembly, and improves integration.

[0004] The technical solution adopted in this utility model is as follows:

[0005] An integrated all-in-one SiC controller system for buses includes a main drive motor controller, a high-voltage power distribution module, and an auxiliary drive control module; the main drive motor controller and the auxiliary drive control module distribute the high voltage of the entire vehicle to different high-voltage power consumption units through the high-voltage power distribution module.

[0006] The main drive motor controller includes a main control module, a main drive module, a high-voltage interlock module, an insulation detection module, a switch control module, and a SiC power module; the main control module, the main drive module, the high-voltage interlock module, the insulation detection module, and the switch control module are all controlled by the main drive MCU;

[0007] The high-voltage power distribution module includes a current sensor, a mechanical switch, an electronic switch, and a fuse;

[0008] The auxiliary drive control module includes a steering control drive module, an air compressor control drive module, a DC / DC module, a timing monitoring system, and a power module; the steering control drive module, the air compressor control drive module, the DC / DC module, and the timing monitoring system are all controlled by the auxiliary drive MCU.

[0009] Furthermore, the all-in-one SiC controller system includes a drive pre-charge circuit and a power distribution pre-charge circuit that are respectively connected to the two positive inputs of the power battery; both the drive pre-charge circuit and the power distribution pre-charge circuit include two mechanical switches connected in parallel, and one of the mechanical switches is connected in series with the pre-charge resistor.

[0010] The drive pre-charge circuit is used for power-on pre-charge of the main drive motor controller, steering control drive module, air compressor control drive module, DC / DC module and timing monitoring system;

[0011] The power distribution pre-charge circuit is used for the pre-charging of the air conditioning / water-cooled unit, electric heating, electric defrosting, first battery heating component and second battery heating component;

[0012] The main drive motor controller, steering control drive module, air compressor control drive module, DC / DC module, timing monitoring system, air conditioning / water-cooled unit, electric heating, electric defrosting, first battery heating component and second battery heating component are all connected to the two negative inputs of the power battery.

[0013] Furthermore, two current sensors and fuses are provided before the drive pre-charge circuit and the power distribution pre-charge circuit.

[0014] Furthermore, the two positive inputs and two negative inputs of the power battery are respectively connected to the first charging module and the second charging module through two mechanical switches.

[0015] Furthermore, the drive pre-charge circuit and the power distribution pre-charge circuit share a pre-charge resistor.

[0016] Furthermore, each branch of the power distribution pre-charging circuit is equipped with a fuse and an electronic switch.

[0017] The beneficial effects of this utility model are as follows: This utility model has a simple and compact structure. Under the premise of achieving the same performance as the original vehicle, it shares some components, which makes the system integration higher and saves more space. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the system of this utility model;

[0019] Figure 2 This is a high-voltage electrical schematic diagram of the present invention;

[0020] In the diagram: 1-Main drive motor controller, 2-High voltage power distribution module, 3-Auxiliary drive control module, 101-Main control module, 102-Main drive module, 103-High voltage interlock module, 104-Insulation detection module, 105-Switch control module, 106-SiC power module, 107-Main drive MCU, 201-Current sensor, 202-Mechanical switch, 203-Electronic switch, 204-Fuse, 301-Timing monitoring system, 302-DC / DC module, 303-Steering. Control drive module, 304-Air compressor control drive module, 305-Power module, 306-Auxiliary drive MCU, 4-Drive motor, 5-Air conditioning / water-cooled unit, 6-Electric heating, 7-Electric defrosting, 8-First battery heating component, 9-Second battery heating component, 10-First charging module, 11-Second charging module, 12-Steering motor, 13-Air compressor, 14-Power battery, 15-Store battery, 16-Vehicle controller, 17-Pre-charge resistor, 18-Battery BMS. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, this utility model is an integrated all-in-one SiC controller system for buses, including a main drive motor controller 1, a high-voltage power distribution module 2, and an auxiliary drive control module 3; wherein,

[0023] The main drive motor controller 1 includes a main control module 101, a main drive module 102, a high voltage interlock module 103, an insulation detection module 104, a switch control module 105, and a SiC power module 106. The main control module 101, the main drive module 102, the high voltage interlock module 103, the insulation detection module 104, and the switch control module 105 are all controlled by the main drive MCU. The main drive motor controller 1 receives commands from the vehicle controller via CAN, which are then processed by the main drive MCU 107 to output PWM to drive the SiC power module 106 to control the drive motor 4. The high-voltage interlock module 103 judges the high-voltage wiring harness connector signals to realize the high-voltage interlock function. The insulation detection module 104 realizes the insulation detection function by detecting the voltage. The switch control module 105 includes a mechanical switch control module and an electronic switch control module. According to the power distribution requirements sent by the vehicle controller via CAN, it is processed by the main drive MCU 107 to output the control signals of the mechanical switch and the electronic switch, thereby controlling the mechanical switch 202 and the electronic switch 203 on the high-voltage power distribution module 2, thus providing power to the main drive motor controller 1, the steering control drive module 303, the air compressor control drive module 304, the DC / DC module 302, the electric heater 6, the electric defrost 7, the air conditioning / water cooling unit 5, the first battery heating component 8, the second battery heating component 9, the first charging module 10, and the second charging module 11.

[0024] The high-voltage power distribution module 2 also includes a current sensor 201 for detecting the input current of the power battery 14.

[0025] The auxiliary drive control module 3 includes a steering control drive module 303, an air compressor control drive module 304, a DC / DC module 302, and a timing monitoring system 301, all sharing a single auxiliary drive MCU 306. The steering control drive module 303 controls the drive power module 305 via the auxiliary drive MCU 306 to operate the steering motor 12, which in turn drives the power steering pump motor to provide steering assistance. The air compressor control drive module 304 controls the drive power module 305 via the auxiliary drive MCU 306 to operate the electric air compressor 13, providing compressed gas to the vehicle's braking system and electric door system. The DC / DC module 302 converts the high-voltage electricity from the power battery 14 to low-voltage electricity, providing low-voltage power to the vehicle and charging the 24V battery 15. The timing monitoring system 301 is used to wake up the low-voltage system and monitor vehicle information such as the power battery 14 when the vehicle is stopped.

[0026] like Figure 2As shown, this utility model inputs the high-voltage power from the power battery 14 through two battery inputs. Each input is detected by a current sensor 201, which is used for SOC calculation by the battery BMS 18. A fuse 204 is installed after each current sensor 201. Two pre-charge circuits are connected after the fuse 204. Mechanical switch 202-1, pre-charge resistor 17, and mechanical switch 202-3 form one drive pre-charge circuit, and mechanical switch 202-2, pre-charge resistor 17, and mechanical switch 202-4 form another distribution pre-charge circuit. The two pre-charge circuits share a pre-charge resistor 17 and perform pre-charge separately when the high voltage is applied.

[0027] The drive pre-charge circuit is primarily used for pre-charging the main drive motor controller 1, steering control drive module 303, air compressor control drive module 304, and DC / DC module 302. Since the steering control drive module 303, air compressor control drive module 304, and DC / DC module 302 are auxiliary control systems, fuses 204 are installed at the front end of the steering motor 12, air compressor 13, and battery 15. The timing monitoring system 301 directly draws high-voltage electricity from the power battery 14 before the drive pre-charge circuit. When the vehicle is stopped, it is used to wake up the low-voltage system and monitor vehicle information such as the power battery 14.

[0028] The power distribution pre-charge circuit is used for the pre-charging of the air conditioning / water-cooled unit 5, electric heating 6, electric defrosting 7, first battery heating component 8 and second battery heating component 9. Each branch is equipped with a fuse 204. Except for the air conditioning / water-cooled unit 5, each branch is equipped with an electronic switch 203 for individual on / off control.

[0029] The first charging module 10 and the second charging module 11 are powered by mechanical switches 202. The first charging module 10 has two mechanical switches 202-5 and 202-6 on the positive input and negative input sides of the power battery 14. Similarly, the second charging module 11 has two mechanical switches 202-7 and 202-8 on the positive input and negative input sides of the power battery 14.

[0030] This utility model features a shared structure and hardware circuitry, integrated chips, decoupled software, and integrated functions, realizing an integrated multi-functional controller system for buses. This system is deeply integrated, saving space for the entire vehicle, reducing wiring harness assembly, and further saving costs.

Claims

1. An integrated all-in-one SiC controller system for buses, comprising a main drive motor controller (1), a high-voltage power distribution module (2), and an auxiliary drive control module (3); characterized in that: The input end of the high-voltage power distribution module (2) is connected to the power battery (14), and the output end of the high-voltage power distribution module (2) is connected to the main drive motor controller (1), the auxiliary drive control module (3), the air conditioning / water cooling unit (5), the electric heating (6), the electric defrosting (7), the first battery heating component (8), and the second battery heating component (9), respectively. The main drive motor controller (1) includes a main control module (101), a main drive module (102), a high-voltage interlock module (103), an insulation detection module (104), a switch control module (105), and a SiC power module (305) (106); the main control module (101), the main drive module (102), the high-voltage interlock module (103), the insulation detection module (104), and the switch control module (105) are all controlled by the main drive MCU (107); The high-voltage power distribution module (2) includes a current sensor (201), a mechanical switch (202), an electronic switch (203), and a fuse (204). The auxiliary drive control module (3) includes a steering control drive module (303), an air compressor control drive module (304), a DC / DC module (302), a timing monitoring system (301), and a power module (305); the steering control drive module (303), the air compressor control drive module (304), the DC / DC module (302), and the timing monitoring system (301) are all controlled by the auxiliary drive MCU (306); The all-in-one SiC controller system includes a drive pre-charge circuit and a power distribution pre-charge circuit, each connected to two positive inputs of the power battery (14); both the drive pre-charge circuit and the power distribution pre-charge circuit include two parallel mechanical switches (202), and one of the mechanical switches (202) is connected in series with the pre-charge resistor (17); the drive pre-charge circuit is used for power-on pre-charge of the main drive motor controller (1), the steering control drive module (303), the air compressor control drive module (304), the DC / DC module (302), and the timing monitoring system (301); The power distribution pre-charge circuit is used for the pre-charging of the air conditioning / water-cooled unit (5), electric heating (6), electric defrosting (7), first battery heating component (8) and second battery heating component (9); the main drive motor controller (1), steering control drive module (303), air compressor control drive module (304), DC / DC module (302), timing monitoring system (301), air conditioning / water-cooled unit (5), electric heating (6), electric defrosting (7), first battery heating component (8) and second battery heating component (9) are all connected to the two negative inputs of the power battery.

2. The integrated all-in-one SiC controller system for buses according to claim 1, characterized in that: Two current sensors (201) and fuses (204) are provided before the drive pre-charge circuit and the power distribution pre-charge circuit.

3. The integrated all-in-one SiC controller system for buses according to claim 1, characterized in that: The two positive inputs and two negative inputs of the power battery are connected to the first charging module (10) and the second charging module (11) through two mechanical switches (202), respectively.

4. The integrated all-in-one SiC controller system for buses according to claim 1, characterized in that: The drive pre-charge circuit and the power distribution pre-charge circuit share a pre-charge resistor (17).

5. The integrated all-in-one SiC controller system for buses according to claim 1, characterized in that: Each branch of the power distribution precharge circuit is equipped with a fuse (204) and an electronic switch (203).

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