A body domain control system and a motor vehicle

Abstract

The application relates to a vehicle body domain control system and a motor vehicle, which comprises a front vehicle body domain controller and a rear vehicle body domain controller in communication connection, the front vehicle body domain controller is connected with a passenger door, a horn, a defroster, a ventilation fan, a windscreen wiper and a light assembly through corresponding HSD chips respectively, and the rear vehicle body domain controller is connected with a battery management system, a vehicle controller, an integrated power supply, a cooling fan, a water pump and a motor controller through corresponding HSD chips respectively. Through the cooperative work of the two vehicle body domain controllers, the integration of a power distribution and a control system is realized, wire harness connection is simple, and meanwhile, through the connection of a vehicle terminal with a vehicle networking platform, the real-time monitoring and remote upgrading functions of the working states of electric components can be realized.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a vehicle body domain control system and a motor vehicle. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Electric vehicles rely on numerous sensors, controllers, actuators, and other components for their various functions. Consequently, traditional electrical architectures and power distribution methods are no longer able to meet the needs of the vehicle's continued development. The main issues are:

[0004] 1. Most electric-powered motor vehicles use the traditional power distribution method of fuse plus relay. After the fuse is burned out, it cannot be automatically restored and must be manually replaced before operation can be restored;

[0005] 2. There are multiple controllers distributed on the vehicle body, with a low degree of integration and a lack of data communication between the controllers;

[0006] 3. The power distribution and control systems are relatively independent. Once the power distribution plan is determined, it cannot be changed, remote upgrades cannot be achieved, and the real-time working status of the vehicle's electrical components cannot be obtained;

[0007] 4. The electronic and electrical architecture adopts a distributed architecture with complex network topology, intertwined wiring harnesses, and high communication load rate. Summary of the Invention

[0008] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a body domain control system and a motor vehicle, which realize the integration of power distribution and control system through the collaborative work of two body domain controllers, and the wiring harness connection is simple. At the same time, the vehicle terminal can be connected to the Internet of Vehicles platform to realize real-time monitoring of the working status of electrical components and remote upgrade functions.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A first aspect of the present invention provides a body domain control system, comprising a front body domain controller and a rear body domain controller that are communicatively connected, the front body domain controller being connected to a passenger door, a horn, a defroster, a ventilation fan, a wiper, and a lighting assembly through corresponding HSD chips, and the rear body domain controller being connected to a battery management system (BMS), a vehicle control unit (VCU), an integrated power supply, a cooling fan, a water pump, and a motor controller through corresponding HSD chips.

[0011] The front body domain controller and the rear body domain controller are connected via power cables and CAN-FD.

[0012] The front body domain controller is also connected to the one-touch start button and instrument panel respectively.

[0013] The front body domain controller receives the signal sent by the remote control key.

[0014] The front body domain controller is also connected to the central gateway, TBOX, passenger door switch, horn switch, defroster switch, ventilation fan switch, combination switch and shift panel.

[0015] The front body domain controller includes MCU, CAN transceiver unit and high-frequency receiving unit.

[0016] The rear body domain controller is also connected to the reversing radar, cabin temperature sensor, passenger seat belts, door emergency valve, rear hatch travel switch and air pressure sensor.

[0017] The rear body domain controller is connected to the battery via a manual switch.

[0018] The rear body domain controller and the connected battery management system both receive charging signals.

[0019] A second aspect of the present invention provides a motor vehicle equipped with the above-mentioned system.

[0020] Among them, the front / rear body domain controllers are installed in the front / rear areas of the motor vehicle respectively, and are used for power distribution and control of electrical loads in the corresponding areas.

[0021] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0022] 1. Through the coordinated work of two body domain controllers and multiple HSD chips, the working status, current level and fault status of the vehicle's electrical components are monitored in real time to achieve power distribution and control of the vehicle's electrical components. The HSD chip has current detection and fault diagnosis functions, and can feed back real-time current and fault information to the main control chip, thereby eliminating the traditional power distribution method of fuses and relays, effectively improving the safety of vehicle electricity use and making it easier to understand the working conditions of the vehicle's electrical components.

[0023] 2. The two body controllers are distributed in the front and rear areas of the vehicle body and are connected by communication, which reduces hard-wired control and avoids the use of traditional multi-controller methods, greatly reducing the cost of the entire vehicle.

[0024] 3. The working status of the vehicle's electrical components is obtained through the two connected body domain controllers and the connected electrical loads. Combined with the TBOX's Internet of Vehicles function, the power distribution solution can be remotely upgraded.

[0025] 4. The two vehicle body domain controllers integrate the control of multiple electrical load systems according to their locations, reducing the complexity of the network topology and thus reducing the communication load rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 This is a schematic diagram of the interaction principle between the main control chip and the HSD chip in the vehicle body domain control system provided by one or more embodiments of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of a vehicle body domain control system provided by one or more embodiments of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] As described in the background technology, most electric-powered motor vehicles use the traditional fuse-and-relay power distribution method. After the fuse burns out, it cannot recover automatically and must be manually replaced before operation can be restored. Secondly, there are multiple controllers distributed on the vehicle body, with a low degree of integration and a lack of data communication between the controllers. Thirdly, the power distribution and control systems are relatively independent. Once the power distribution plan is determined, it cannot be changed, remote upgrades cannot be achieved, and the real-time working status of the vehicle's electrical components cannot be obtained. At the same time, the electronic and electrical architecture adopts a distributed architecture, the network topology is complex, the wiring harnesses are intertwined, and the communication load rate is high.

[0033] Therefore, the following embodiments provide a body domain control system and a motor vehicle, which realize the integration of power distribution and control system through the collaborative work of two body domain controllers, and the wiring harness connection is simple. At the same time, the working status of electrical components can be monitored in real time and remotely upgraded by connecting to the Internet of Vehicles platform through the vehicle terminal.

[0034] Example 1:

[0035] like Figure 1-2 As shown, a body domain control system includes a front body domain controller and a rear body domain controller that are communicatively connected. The front body domain controller is connected to the passenger door, horn, defroster, ventilation fan, wiper and lighting components through corresponding HSD chips, and the rear body domain controller is connected to the battery management system (BMS), vehicle control unit (VCU), integrated power supply, cooling fan, water pump and motor controller through corresponding HSD chips.

[0036] The front body domain controller and the rear body domain controller are connected via power cables and CAN-FD.

[0037] The front body domain controller is also connected to the one-touch start button and instrument panel respectively.

[0038] The front body domain controller receives the signal sent by the remote control key.

[0039] The front body domain controller is also connected to the central gateway, TBOX, passenger door switch, horn switch, defroster switch, ventilation fan switch, combination switch and shift panel.

[0040] The rear body domain controller is also connected to the reversing radar, cabin temperature sensor, passenger seat belts, door emergency valve, rear hatch travel switch and air pressure sensor.

[0041] The front body domain controller includes MCU, CAN transceiver unit and high-frequency receiving unit.

[0042] The rear body domain controller is connected to the battery via a manual switch.

[0043] The rear body domain controller and the connected battery management system both receive charging signals.

[0044] Specifically:

[0045] The system includes a front and rear body domain controllers, TBOX, a central computing unit, and various electrical loads. The front and rear body domain controllers are installed in the front and rear areas of the vehicle, respectively, and are responsible for power distribution and control of the electrical loads in their respective areas. The two body domain controllers are connected via 100M Ethernet for mutual communication.

[0046] like Figure 1As shown, unlike traditional power distribution boxes consisting of fuses and relays, the body domain controller utilizes a full-chip approach to power distribution and load control. The main control chip and multiple intelligent high-side HSD chips operate in tandem, switching different HSD chips on and off based on different control logic (the control logic depends on actual needs), effectively distributing and controlling power to the entire vehicle's electrical components. The high-side HSD chips also feature current detection and fault diagnosis capabilities, providing real-time current and fault feedback to the main control chip. This eliminates the need for fuses and relays throughout the vehicle, effectively improving overall electrical safety.

[0047] In this embodiment, the main control chip uses an S32K14* series chip, and the HSD chip uses an NXP06XS4200 chip. Pin 1 of the main control chip receives external input signals through an AD conversion circuit, analyzes the voltage values ​​of different signals, and uses them to make corresponding logical judgments. Pin 1 of the HSD chip is connected to an external power supply to power the chip. Pin 2 of the main control chip is connected to pin 2 of the HSD chip to control the HSD chip's on / off function. Pin 3 of the main control chip is connected to pin 3 of the HSD chip to receive fault information from the HSD chip. Pin 4 of the main control chip is connected to pin 4 of the HSD chip to receive the current value from the HSD chip. Pin 5 of the HSD chip is directly connected to the load to power the load's electronic components.

[0048] like Figure 1-2 As shown in the figure, the rear body domain controller includes a main control unit (MCU), a CAN transceiver unit, and multiple HSD high-side switches of varying specifications. The MCU, a chip from the S32K14x series, processes various signal inputs to control the on / off switching of the HSD, activating or deactivating the corresponding electrical loads. The body domain controller interacts with other controllers via the CAN transceiver unit, sending and receiving control commands. Unlike the rear body domain controller, the front body domain controller also includes a high-frequency signal receiver for receiving wireless signals from the remote key.

[0049] In this embodiment, Figure 2 As shown:

[0050] Pin 1 of the rear body domain controller is the power input pin. The battery serves as the power supply for the low-voltage system of the entire vehicle. It is connected to pin 1 of the rear body domain controller through a manual switch as the power input of the rear body domain controller.

[0051] Pin 2 of the rear body domain controller is the DCDC power input pin, which is used to charge the battery when in high voltage state.

[0052] Pin 3 of the rear body domain controller is the charging power input pin.

[0053] Pin 4 of the rear body domain controller is the charging signal input pin, which is used to input the charging signal when the vehicle is charging.

[0054] In the normal working mode of the vehicle, the manual switch is closed, and the battery power is input to the rear body domain controller. The rear body domain controller provides power to various loads at the rear of the vehicle according to different control logic and power setting levels. For example:

[0055] Pin 5 is the battery controller BMS power output pin, which is used to power the BMS.

[0056] Pin 6 is the vehicle controller VCU power output pin, which is used to power the VCU.

[0057] Pin 7 is the integrated power output pin, which is used to supply power to the integrated power supply.

[0058] Pins 8 / 9 / 10 are the cooling fan / water pump / motor controller output pins, respectively, used to supply power to the cooling fan / water pump / motor controller.

[0059] The power supply of pins 5 / 6 / 7 / 10 is always on and will be output when the manual switch is closed.

[0060] The power output of pins 8 / 9 is controlled power, and the rear body domain controller determines whether to output based on the temperature of the motor and motor controller.

[0061] Pin 11 of the rear body domain controller is a CAN-FD communication pin, which is used to communicate with the front body domain controller.

[0062] Pin 12 of the rear body domain controller is a high-current power output pin in the form of a terminal, which is used to power the front domain controller.

[0063] Pin 13 of the rear body domain controller is the air pressure sensor input pin, which is used to connect to the air pressure sensor to collect the vehicle's air pressure value.

[0064] Pin 14 of the rear body domain controller is the input pin of the rear hatch travel switch, which is used to connect to the travel switch to collect the rear hatch switch signal.

[0065] Pin 15 of the rear body domain controller is the door emergency valve input pin, which is used to connect to the emergency valve to collect the emergency valve switch signal.

[0066] Pin 16 of the rear body domain controller is the passenger seat belt input pin, which is used to connect to the passenger seat belt to collect seat belt signals.

[0067] Pin 17 of the rear body domain controller is the warehouse temperature sensor input pin, which is used to connect to the warehouse temperature sensor to collect the temperature inside the warehouse.

[0068] The 18th pin of the rear body domain controller is an input pin for the rear radar, which is used to connect with the rear radar to collect the rear obstacle information.

[0069] The 1st pin of the front body domain controller is a CAN FD communication pin, which is connected with the 11th pin of the rear body domain controller to realize information sharing between the domain controllers.

[0070] The 2nd pin of the front body domain controller is a power input pin, which is connected to the 12th pin of the rear body domain controller through a cable (the wire diameter is generally 35mm 2 ).

[0071] The 3rd pin of the front body domain controller is a gear input pin, which is used to connect with the gear panel.

[0072] The 4th pin of the front body domain controller is a light / rain wiper switch signal input pin, which is used to connect with the combination switch.

[0073] The 5th pin of the front body domain controller is a ventilation fan switch input pin, which is used to collect the ventilation fan switch control signal.

[0074] The 6th pin of the front body domain controller is a defroster switch input pin, which is used to collect the defroster switch control signal.

[0075] The 7th pin of the front body domain controller is a horn switch input pin, which is used to collect the horn switch control signal.

[0076] The 8th pin of the front body domain controller is a passenger door switch input pin, which is used to collect the passenger door switch control signal.

[0077] The 9th pin of the front body domain controller is a one-key start button switch input pin, which is used to collect the button switch signal.

[0078] The 11th pin of the front body domain controller is a high-frequency signal receiving pin, which is used to receive the wireless signal of the remote key.

[0079] In addition, the front body domain controller also provides power supply for various loads in the front part of the vehicle according to different control logic and power supply setting levels. For example:

[0080] The 10th / 12th / 13th pin of the front body domain controller is a power output pin for the instrument / TBOX / central gateway, which is output when the manual switch is turned on, and is used to power the instrument / TBOX / central gateway.

[0081] The 14th / 15th / 16th / 17th / 18th / 19th pin of the front body domain controller is a power output pin for the light / rain wiper / ventilation fan / defroster / horn / passenger door solenoid valve, etc. The front body domain controller collects the control signals of 4-8, and when the control signals are valid, it controls the opening or closing of the 14-19 power output pins.

[0082] The battery is used as the power supply for the low-voltage system of the vehicle. It is connected to the positive pole of the rear body domain controller through a manual switch and serves as the power input of the rear body domain controller. In the normal working mode of the vehicle, the manual switch is closed and the battery power is input to the rear body domain controller. The rear body domain controller provides power to various loads at the rear of the vehicle (here the loads include VCU, integrated power supply, motor controller, water pump, cooling fan, etc.) according to different control logics and power setting levels. The front body domain controller is connected to the front body domain controller through a cable (the wire diameter is generally 35mm 2 ) is connected to the high-current output terminals of the rear domain controller. The front body domain controller provides power to various loads at the front of the vehicle (including the horn, passenger door solenoid valve, body lights, wipers, defroster, etc.) based on different control logic and power setting levels. Simultaneously, the two body domain controllers communicate via CAN-FD, enabling information sharing between the domain controllers.

[0083] The push-to-start button has four positions: OFF, ACC, ON, and STAR T. The front body domain controller is connected to the push-to-start button via a CAN communication line to receive the driver's button operation signal. This signal is then transmitted to the rear body domain controller, which determines the power output control for each domain controller in different gear positions.

[0084] The rear body domain controller receives signals from the parking sensor, cabin temperature sensor, passenger seatbelt, door emergency valve, rear hatch travel switch, and air pressure sensor. The front body domain controller receives signals from the shift panel and passenger door switch status. Both domain controllers transmit these signals via the CAN communication line to the instrument cluster for display.

[0085] The front body domain controller receives multiple switch signals such as the light control switch, combination switch, passenger door switch, ventilation fan switch, horn switch, etc., and controls different HSD chips to output power to the corresponding electrical loads for the operation of electrical components.

[0086] When the driver presses the push-to-start button to energize the vehicle, the front body domain controller transmits the button's START signal and the gear position signal to the rear body domain controller, which then determines the rear hatch travel switch signal. When the gear is in neutral and the rear hatch is closed, the rear body domain controller sends a start signal to the VCU (vehicle control unit) to initiate the high-voltage operation. Once the vehicle is fully powered up, the VCU sends a "Ready" signal to the rear body domain controller, which then transmits it to the instrument cluster for display. Simultaneously, the VCU initiates a control command to activate the DC-DC converter, converting the high-voltage power from the power battery into low-voltage power to charge the battery.

[0087] The front body domain controller has a built-in high-frequency antenna receiving unit for receiving wireless signals from the remote control key. The remote control key has buttons for opening and closing the front and rear passenger doors. When the driver presses one of these buttons, the front body domain controller receives the high-frequency signal from the key, determines the current state of the passenger door, and outputs a power signal to open or close the passenger door.

[0088] When the vehicle is plugged into the charging station and the battery's manual switch is off, the rear-body domain controller receives the charging signal, which is then fed into the BMS (battery management system). The BMS activates the built-in auxiliary power supply, which then powers the rear-body domain controller. The rear-body domain controller then activates the HSD power supply channels of the VCU, TBOX, instrument cluster, and BMS, putting the vehicle into charging mode.

[0089] The HSD high-side chips in both domain controllers have current detection and fault detection functions, and can transmit the open status, current size and fault status of each channel to the instrument for display.

[0090] The front body domain controller is connected to the central gateway via 100M Ethernet, receiving commands from the central gateway. The central gateway is also connected to the TBOX, enabling vehicle information upload and remote upgrades in conjunction with the Internet of Vehicles platform.

[0091] This system, through the collaborative operation of two body domain controllers, integrates power distribution and control for the entire vehicle. Traditional power distribution methods involving fuses and relays are eliminated at the vehicle level, enabling real-time monitoring of the operating status, current flow, and fault conditions of the vehicle's electrical components. This information is uploaded via the Internet of Vehicles (IoV), facilitating accurate monitoring of the operating status of the vehicle's electrical components. The two body controllers, located at the front and rear of the vehicle, communicate using CAN-FD, reducing hardwired control and significantly reducing vehicle costs. Furthermore, the two body domain controllers integrate control of multiple systems, including parking sensors, remote locking, and push-button start, further reducing costs.

[0092] Example 2:

[0093] A motor vehicle is equipped with the system of the first embodiment.

[0094] Among them, the front / rear body domain controllers are installed in the front / rear areas of the motor vehicle respectively, and are used for power distribution and control of electrical loads in the corresponding areas.

[0095] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A vehicle body domain control system, characterized in that: Including a front body domain controller and a rear body domain controller with communication connections. The front body domain controller is connected to the passenger door, horn, defroster, ventilation fan, wiper and lighting components through corresponding HSD chips. The rear body domain controller is connected to the battery management system, vehicle controller, integrated power supply, cooling fan, water pump and motor controller through corresponding HSD chips. The front body domain controller and the rear body domain controller are connected via a power cable and CAN-FD; The working status of the vehicle's electrical components is obtained through the two body domain controllers and the connected electrical loads through communication. In conjunction with the vehicle networking function of TBOX, the power distribution solution can be remotely upgraded.

2. The vehicle body domain control system according to claim 1, characterized in that: The front body domain controller is also connected to the one-touch start button and the instrument respectively.

3. The vehicle body domain control system according to claim 1, characterized in that: The front vehicle body domain controller receives a signal sent by a remote control key.

4. The vehicle body domain control system according to claim 1, characterized in that: The front body domain controller is also connected to the central gateway, TBOX, passenger door switch, horn switch, defroster switch, ventilation fan switch, combination switch and shift panel respectively.

5. The vehicle body domain control system according to claim 1, characterized in that: The front body domain controller includes an MCU, a CAN transceiver unit and a high-frequency receiving unit.

6. The vehicle body domain control system according to claim 1, characterized in that: The rear body domain controller is also connected to the reversing radar, cabin temperature sensor, passenger safety belt, door emergency valve, rear hatch travel switch and air pressure sensor respectively.

7. The vehicle body domain control system according to claim 1, characterized in that: The rear vehicle body domain controller is connected to the battery via a manual switch.

8. The vehicle body domain control system according to claim 1, characterized in that: The rear body domain controller and the connected battery management system both receive charging signals.

9. A motor vehicle, characterized in that: A system according to any one of claims 1 to 8, wherein the front body domain controller is installed in the front area of ​​the motor vehicle and the rear body domain controller is installed in the rear area of ​​the motor vehicle.

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