Domain control system and vehicle

Abstract

The utility model relates to a domain control system and a vehicle, and relates to the technical field of new energy vehicles. The domain control system comprises a power domain assembly, a chassis domain assembly, a vehicle body domain assembly and an integrated domain controller. The power domain assembly, the chassis domain assembly and the vehicle body domain assembly are respectively connected with the integrated domain controller; the integrated domain controller is used for controlling the power domain component, the chassis domain component and the vehicle body domain component. Therefore, the integration level of the domain control system can be improved, a plurality of functional domain components are controlled through one integrated domain controller, the structure of the domain control system is simplified, and the cost of the domain control system is reduced.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicles, in particular to the field of domain controller application technology, and specifically to a domain control system and a vehicle. Background Art

[0002] Each functional requirement of the vehicle requires an ECU (Electronic Control Unit). As the functions of the vehicle gradually increase, the number of ECUs in the vehicle is also increasing, and the connection harnesses in the vehicle are also increasing. Too many connection harnesses bring difficulties to the layout of the entire vehicle and increase the quality and manufacturing cost of the vehicle. Utility Model Content

[0003] The present application provides a domain control system to at least solve the technical problem in the related art that the increase in the number of ECUs leads to the extension of the wiring harness in the vehicle, which increases the quality and cost of the whole vehicle. The technical solution of the present application is as follows:

[0004] According to the first aspect of the present application, a domain control system is provided. The domain control system includes: a power domain component, a chassis domain component, a body domain component and an integrated domain controller. The power domain component, the chassis domain component and the body domain component are respectively connected to the integrated domain controller; the integrated domain controller is used to control the power domain component, the chassis domain component and the body domain component.

[0005] In a possible implementation, the above-mentioned domain control system further includes: a power supply component. The power supply component is respectively connected to the integrated domain controller, the power domain component and the chassis domain component; the power supply component is used to supply power to the integrated domain controller, the power domain component and the chassis domain component. The power supply component includes: a power selection circuit and a bridge drive circuit; the power selection circuit includes: a main power supply and a secondary power supply; the main power supply is used to provide a first voltage, and the secondary power supply is used to provide a second voltage. The secondary power supply includes a high-voltage power supply and a step-down circuit; the high-voltage power supply is connected to the step-down circuit, and the bridge drive circuit is connected between the integrated domain controller and the step-down circuit; the bridge drive circuit is used to control the output voltage of the step-down circuit under the control of the integrated domain controller.

[0006] The switching circuit is connected to the integrated domain controller, the main power supply and the step-down circuit; the switching circuit is used to select the first voltage or the second voltage under the control of the integrated domain controller, and provide the selected voltage to the integrated domain controller, the power domain component and the chassis domain component.

[0007] In a possible implementation, the domain control system further includes: a step-down circuit including: a first MOS tube, a second MOS tube, a first diode, a second diode and a transformer; the transformer includes an input inductor and an output inductor, and the output inductor serves as the output end of the transformer. The control electrode of the first MOS tube is connected to the bridge drive circuit, the first electrode of the first MOS tube is connected to the positive electrode of the high-voltage power supply, and the second electrode of the first MOS tube is connected to the first end of the input inductor. The control electrode of the second MOS tube is connected to the bridge drive circuit, the first electrode of the second MOS tube is connected to the second end of the input inductor, and the second electrode of the first MOS tube is connected to the negative electrode of the high-voltage power supply. The input electrode of the first diode is connected to the first electrode of the second MOS tube, and the output electrode of the first diode is connected to the first electrode of the second MOS tube. The input electrode of the second diode is connected to the second electrode of the second MOS tube, and the output electrode of the second diode is connected to the second electrode of the second MOS tube.

[0008] In a possible implementation, the above-mentioned domain control system further includes: the power supply component further includes: a main power supply recovery circuit and a comparison circuit. The main power supply recovery circuit is connected between the main power supply and the integrated domain controller; the main power supply recovery circuit is used to obtain the first voltage and transmit the first voltage to the integrated domain controller. The comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit the set voltage to the comparison circuit, the comparison circuit is used to obtain the first voltage and the set voltage, and compare the first voltage and the set voltage, and transmit the comparison result to the integrated domain controller.

[0009] In a possible implementation, the domain control system further includes: the comparison circuit includes: a first comparison circuit and a second comparison circuit. The first comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a first set voltage to the first comparison circuit; the first comparison circuit is used to obtain the first voltage; the first comparison circuit is used to compare the first voltage and the first set voltage, and transmit the comparison result to the integrated domain controller. The second comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a second set voltage to the second comparison circuit, the second set voltage being less than the first set voltage; the second comparison circuit is used to obtain the first voltage, and when the first voltage is less than the first set voltage, obtain the second set voltage; the second comparison circuit is also used to compare the first voltage and the second set voltage, and transmit the comparison result to the integrated domain controller.

[0010] In a possible implementation, the above-mentioned domain control system also includes: the power supply component also includes: a secondary power supply recovery circuit; the secondary power supply recovery circuit is connected between the step-down circuit and the integrated domain controller; the secondary power supply recovery circuit is used to obtain the sampled voltage of the secondary power supply and transmit the sampled voltage to the integrated domain controller.

[0011] In a possible implementation, the domain control system further includes: the auxiliary power supply recovery circuit includes: a capacitor group, multiple current limiting resistors and a voltage detection circuit. The capacitor group is connected between the positive and negative electrodes of the high-voltage power supply; the capacitor group includes multiple voltage-dividing capacitors connected in series. Multiple current-limiting resistors, one current-limiting resistor and one voltage-dividing capacitor are arranged in parallel. Voltage detection circuit, one end of the voltage detection circuit is connected between any two adjacent voltage-dividing capacitors, and the other end of the voltage detection unit is connected to the integrated domain controller.

[0012] In a possible implementation, the above-mentioned domain control system also includes: the integrated domain controller includes: at least one processor, the processor is connected to the power domain component, the chassis domain component and the body domain component; the processor is used to control the power domain component, the chassis domain component and the body domain component.

[0013] In a possible implementation, the domain control system further includes: the power supply component further includes: a first power supply, a second power supply and a third power supply. The first power supply includes: a first power supply input terminal and a plurality of first power supply output terminals; the first power supply input terminal is connected to the output terminal of the power supply selection circuit, and the first power supply output terminal is connected to the primary load. The second power supply includes: a second power supply input terminal and a plurality of second power supply output terminals; the second power supply input terminal is connected to the output terminal of the power supply selection circuit, and the second power supply output terminal is connected to the integrated domain controller. The third power supply includes: a plurality of third power supply input terminals and a plurality of third power supply output terminals; a third power supply input terminal is connected to a second power supply output terminal; and the third power supply output terminal is connected to the third-level load.

[0014] A second aspect of the present application provides a vehicle, comprising a domain control system provided by any of the above embodiments.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0017] Figure 1 is a schematic diagram of the structure of a domain control system according to an exemplary embodiment;

[0018] Figure 2 is a schematic structural diagram of a domain control system according to another exemplary embodiment;

[0019] Figure 3 is a schematic structural diagram of a domain control system according to another exemplary embodiment;

[0020] Figure 4 is a structural schematic diagram of a power supply control module according to an exemplary embodiment;

[0021] Figure 5 is a partial structural schematic diagram of a power supply component according to an exemplary embodiment;

[0022] Figure 6 The diagram is a schematic structural diagram of a voltage-reducing circuit and a filtering and voltage-stabilizing circuit according to an exemplary embodiment. DETAILED DESCRIPTION

[0023] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0025] For ease of understanding, the domain control system and vehicle provided in this application are specifically introduced below with reference to the accompanying drawings.

[0026] The domain control system in the present application can be applied to vehicles, and can also be applied to other transportation tools such as airplanes or ships. The following takes the application of the domain control system to a vehicle as an example to illustrate some embodiments of the present application.

[0027] Figure 1 is a structural diagram of a domain control system according to an exemplary embodiment. Figure 1 As shown, the domain control system 10' comprises: a plurality of domain controllers 1-n and a plurality of functional domain components 1-n. Each functional domain component comprises at least one control unit; a domain controller is connected to a functional domain component, and the domain controller is used to control the control unit in the functional domain component connected thereto.

[0028] Exemplarily, the control unit may be an ECU (Electronic Control Unit).

[0029] The control units include but are not limited to: battery management system BMS (Battery Management System), vehicle controller unit VCU (Vehicle Controller Unit), thermal management system TMS (Thermal Management System), motor drive system IPU (Integrated Power Unit), air suspension system CDC / ECAS (CDC, Continuous Damping Control; ECAS, Electronic-Controlled Air Suspension), electronic braking system EMB (Electric Mechanical Brake), electronic power steering controller EPS (Electric Power Steering), body domain control VIU (Vehicle Integrated Unit), etc.

[0030] like Figure 1 In the domain control system 10' shown, each domain controller can control each control unit in the functional domain component connected to it. Each control unit in the functional domain component can be a plurality of control units in an adjacent area, or each control unit in the functional domain component can also be used to implement the same, similar or interrelated functions.

[0031] Connecting multiple control units in the same functional domain component to the same domain controller, and then connecting multiple domain controllers to the gateway component can significantly reduce the length and complexity of the wiring harness in the domain control system compared to the solution in which each control unit is separately connected to the gateway component.

[0032] but Figure 1 In the domain control system 10' shown in the figure, each different functional domain component is controlled by a different domain controller, and each domain controller can only control a control unit in a functional domain component. In this way, the integration of the domain control system 10' is low, and there are still many connection harnesses in the domain control system 10'.

[0033] Based on this, Figure 2 is a structural diagram of a domain control system according to another exemplary embodiment. Figure 2 As shown, the domain control system 10 includes: a plurality of functional domain components 1-n and an integrated domain controller. Each functional domain component includes at least one control unit; the integrated domain controller is connected to the plurality of functional domain components respectively.

[0034] In this way, Figure 2 The domain control system 10 shown is compared to Figure 1The domain control system 10' shown in FIG. 1 connects multiple functional domain components to the same integrated domain controller, and the integrated domain controller is used to control the operation of the functional domain components connected thereto. Figure 2 As shown, an integrated domain controller can control various control units in multiple functional domain components (power domain components, chassis domain components and body domain components), which significantly improves the integration of the domain control system 10.

[0035] And, if Figure 2 The domain control system 10 shown is compared to Figure 1 The domain control system 10' shown in the figure realizes the functions of multiple domain controllers through an integrated domain controller, reduces the number of domain controllers, and improves the integration of the domain control system 10, thereby reducing the number of connecting harnesses and the number of MCUs in the domain control system 10, and reducing the wiring difficulty and manufacturing cost of the domain control system.

[0036] When the domain control system 10 is applied to an automobile, the overall vehicle layout can be simplified and the quality and cost of the vehicle can be reduced.

[0037] Exemplarily, the plurality of functional domain components include, but are not limited to, a power domain component, a chassis domain component, and a body domain component.

[0038] The control units in the power domain components include but are not limited to: battery management system BMS, vehicle control unit VCU, thermal management system TMS and motor drive system IPU, etc.

[0039] The control units in the chassis domain components include but are not limited to: air suspension system CDC / ECAS, electronic braking system EMB and electronic power steering controller EPS, etc.

[0040] The control unit in the body domain component includes but is not limited to: the gateway component. The gateway component has an Ethernet gateway control function. The gateway component can be connected to the integrated domain controller by wired or wireless connection. The gateway component can also be connected to the power domain component, chassis domain component and body domain component. The gateway component is used to realize data interaction between the functional domain components connected to the integrated domain controller.

[0041] The gateway component may be a gateway controller GW (Gateway Controller). The gateway component is used to implement data transmission between control units (ECUs) within the domain it is responsible for. Each control unit is used to control the load connected to each other, and the gateway component is used to forward the information transmitted by each control unit.

[0042] Exemplarily, the control unit also includes: an engine controller EMS (Engine Control System), a compressor controller CCU (Compressor Control Unit), an electronic stability control system ESC (Electronic Stability Control), an airbag controller ABM (Air Bag Module), a multi-function camera MPC (Multiple Purpose Camera), a TBOX (Telematics BOX, remote information processor) controller, an external power amplifier controller EPA (External Power Amplifier), an instrument cluster controller (IC, Instrument Controller), a cockpit domain controller CDC (Cockpit Domain Controller), an on-board automatic diagnostic controller OBD (On-Board Diagnostics), a combination switch controller CS (Combination Switch), a hidden air outlet controller VENT (Vent controller) and a three-way valve controller VALVE3 (Valve3 controller), etc.

[0043] It should be noted that the division of functional domain components can be adaptively designed according to actual needs. The above is only an exemplary description of each control unit included in each functional domain component, and is not intended to limit the present disclosure. In the domain control system, the types of control units include but are not limited to the above examples.

[0044] In some embodiments, Figure 3 As shown, the integrated domain controller includes multiple interfaces. The interfaces of the integrated domain controller include but are not limited to IO (Input / Output) interface, CAN (Controller Area Network) interface and SPI (Serial Peripheral Interface) interface, power supply interface and SGMII interface.

[0045] For example, Figure 3 As shown, the power supply interface includes but is not limited to the main power supply interface, the AD power supply interface and the CORE power supply interface. The power supply component supplies power to the chip in the integrated domain controller through the AD power supply interface. The power supply component supplies power to the internal circuit of the integrated domain controller through the CORE power supply interface.

[0046] For example, Figure 3 As shown, the integrated domain controller is connected to the power domain components via an IO interface, a CAN interface, and an SPI interface.

[0047] For example, Figure 3 As shown, the integrated domain controller is connected to the chassis domain components via an IO interface, a CAN interface, and an SPI interface.

[0048] For example, Figure 3 As shown, the integrated domain controller is connected to the body domain components via an IO interface and an SGMII interface.

[0049] For example, Figure 3 As shown, the integrated domain controller is connected to the power supply component via an IO interface, an SPI interface and a power supply interface.

[0050] In some embodiments, Figure 3 As shown, the integrated domain controller includes: at least one processor, the processor is connected to the power domain component, the chassis domain component and the body domain component; the processor is used to control the power domain component, the chassis domain component and the body domain component.

[0051] Exemplarily, the processor may be a MCU (Microcontroller Unit).

[0052] In some embodiments, Figure 3 As shown, the integrated domain controller also includes a memory. The memory is used to store program control instructions and reference data of various electrical signals.

[0053] In some examples, such as Figure 3 As shown, the integrated domain controller also includes a first processor. The first processor is used to control multiple connected functional domain components. The first processor is used to process the interactive data between each functional domain component connected to it, and send control instructions to each functional domain component. The first processor can be a SOC (System-on-a-Chip) central processing chip with high computing power and high storage.

[0054] The first processor may be connected to the power domain component, the chassis domain component and the body domain component, and the first processor is used to control the power domain component, the chassis domain component and the body domain component connected thereto.

[0055] In other examples, such as Figure 3 As shown, the integrated domain controller also includes a second processor. The second processor is used to control multiple connected functional domain components. The second processor is used to process the interactive data between each functional domain component connected to it, and send control instructions to each functional domain component. The second processor can be a SOC (System-on-a-Chip) central processing chip with high computing power and high storage.

[0056] The second processor may be connected to the power domain component, the chassis domain component and the body domain component, and the second processor is used to control the power domain component, the chassis domain component and the body domain component connected thereto.

[0057] The integrated domain controller may use one processor or two processors to simultaneously process and calculate the interactive data between the integrated domain controller and each functional domain component, thereby improving the integrated domain controller's processing speed for interactive data, and the response speed of transmitting control signals to connected functional domain components based on interactive data, thereby improving the reliability of the domain control system.

[0058] In some embodiments of the present disclosure, multiple functional domain components (such as Figure 3 The control of the power domain components, chassis domain components and body domain components shown in the figure improves the integration of the domain control system. By integrating the processor (the first processor, or the first processor and the second processor) in the domain controller as the computing core, the operation of each functional domain component is controlled to achieve multi-functional integration.

[0059] Compared with the solution in which one domain controller controls one functional domain component, the number of domain controllers in the domain control system 10 is reduced, thereby reducing the number of signal harnesses connecting various parts of the domain control system 10, reducing costs, and the fewer the number of signal harnesses, the more conducive it is to reducing the risk of signal transmission abnormalities caused by problems such as broken or short-circuited signal harnesses.

[0060] The domain control system 10 in some embodiments of the present disclosure can complete the control of power domain components including BMS, VCU, TMS and IPU through an integrated domain controller, while also realizing the functional implementation and data processing and control of some body domain components with Ethernet gateway control functions, thereby highly integrating the chassis domain and power domain of the vehicle.

[0061] Using the first processor, or using the first processor and the second processor to complete data collection of each functional domain component can meet the needs of high-speed data processing and complex software algorithms, and can also meet the needs of vehicle lightweight, high efficiency, low cost, data delay, and upgradeability.

[0062] Based on the above embodiments, the power supply system of the integrated domain controller and each functional domain component must ensure stable and effective continuous power supply when the whole vehicle is running. If an abnormal power supply situation occurs and a sudden power failure occurs, it will affect the vehicle operation safety and customer experience.

[0063] Based on this, Figure 3As shown, in some embodiments, the domain control system 10 further includes: a power supply component. The power supply component is connected to the integrated domain controller, the power domain component and the chassis domain component respectively; the power supply component is used to supply power to the integrated domain controller, the power domain component and the chassis domain component.

[0064] like Figure 4 and Figure 5 As shown, the power supply component includes: a power selection circuit and a bridge drive circuit. The power selection circuit includes: a main power supply and a secondary power supply, the main power supply is used to provide a first voltage, and the secondary power supply is used to provide a second voltage. The secondary power supply includes a high-voltage power supply and a step-down circuit; the high-voltage power supply is connected to the step-down circuit, and the bridge drive circuit is connected between the integrated domain controller and the step-down circuit; the bridge drive circuit is used to control the output voltage of the step-down circuit under the control of the integrated domain controller.

[0065] The switching circuit is connected to the integrated domain controller, the main power supply and the step-down circuit. The switching circuit is used to select the first voltage or the second voltage under the control of the integrated domain controller and provide the selected voltage to the integrated domain controller, the power domain component and the chassis domain component.

[0066] For example, Figure 5 As shown, the main power supply includes a low-voltage power supply, and the auxiliary power supply includes a high-voltage power supply and a step-down circuit.

[0067] The main power source may be a battery, and the output voltage of the main power source may be, for example, 6V to 18V. Figure 6 As shown, the output terminal VBAT1 of the main power supply is connected to the load. The load can be powered by the main power supply or the auxiliary power supply.

[0068] The high-voltage power supply may be a power battery pack. The secondary power supply takes power from the high-voltage power supply and generates a low-voltage power supply to power all or part of the domain controllers (including the integrated domain controller and other domain controllers).

[0069] The power supply component can supply power to each functional domain component through a main power supply or a secondary power supply. When the main power supply cannot provide effective voltage output, the power supply component can promptly switch to the secondary power supply for power output, so that each functional domain component can receive a continuous and stable power supply, ensuring that the output of the driver chip in each functional domain component is controllable and protecting the safety of the entire vehicle.

[0070] In the domain control system 10 provided in some embodiments of the present disclosure, the power supply component adopts dual power supplies of a main power supply and a secondary power supply. Compared with the solution of only using the main power supply, when the main power supply is abnormal and cannot provide effective power supply, the secondary power supply can promptly replace the main power supply to provide power, thereby effectively improving the safety performance and customer experience of the domain control system.

[0071] Figure 5In it, VH_VBAT+ is the positive electrode of the high-voltage power supply, VH_VBAT- is the negative electrode of the high-voltage power supply, T is a transformer (the transformation ratio N:1 is the ratio of the input voltage to the output voltage of the transformer), Q1 and Q2 are high-voltage MOS tubes of the same type, D1 / D2 are freewheeling clamping diodes, D3 is the anti-reverse diode of the secondary output of the transformer, L1 / C1 / C2 is a π-type filter circuit, R1 is the post-stage load resistor, and VBAT1 is the low-voltage power supply output terminal, which is used to power low-voltage electrical devices.

[0072] Low-voltage electrical devices include domain controllers (including integrated domain controllers and other domain controllers).

[0073] In some embodiments, Figure 6 As shown, the step-down circuit includes: a first MOS transistor Q1, a second MOS transistor Q2, a first diode D1, a second diode D2 and a transformer T; the transformer T includes an input inductor and an output inductor, and the output inductor serves as the output end of the transformer T.

[0074] The control electrode of the first MOS tube Q1 is connected to the bridge drive circuit, the first electrode of the first MOS tube Q1 is connected to the positive electrode of the high-voltage power supply, and the second electrode of the first MOS tube Q1 is connected to the first end of the input inductor.

[0075] The control electrode of the second MOS tube Q2 is connected to the bridge drive circuit, the first electrode of the second MOS tube Q2 is connected to the second end of the input inductor, and the second electrode of the second MOS tube Q2 is connected to the negative electrode of the high-voltage power supply.

[0076] An input electrode of the first diode D1 is connected to a first electrode of the second MOS transistor Q2 , and an output electrode of the first diode D1 is connected to a first electrode of the first MOS transistor Q1 .

[0077] An input electrode of the second diode D2 is connected to the second electrode of the second MOS transistor Q2 , and an output electrode of the second diode Q2 is connected to the second electrode of the first MOS transistor Q1 .

[0078] In the domain control system 10 provided in some embodiments of the present disclosure, the step-down circuit implements step-down through a transformer T, and two MOS tubes are provided to control the on-off connection of the high-voltage power supply and the transformer T. The transformer T is used to implement step-down, and the voltage transformation ratio is more accurate, which helps to ensure that the output voltage of the auxiliary power supply can meet the set voltage requirement.

[0079] In some embodiments, Figure 5 As shown, the power supply component also includes: a main power supply recovery circuit and a comparison circuit.

[0080] The main power supply recovery circuit is connected between the main power supply and the integrated domain controller; the main power supply recovery circuit is used to obtain the first voltage and transmit the first voltage to the integrated domain controller.

[0081] The comparison circuit is connected between the main power supply and the integrated domain controller, and the main power supply recovery circuit is also connected to the comparison circuit; the main power supply recovery circuit also provides the acquired first voltage to the comparison circuit. The integrated domain controller is used to transmit the set voltage to the first comparison circuit, and the comparison circuit is used to obtain the first voltage and the set voltage, and compare the first voltage and the set voltage, and transmit the comparison result to the integrated domain controller.

[0082] Exemplarily, a set voltage may be stored in the memory of the integrated domain controller, and the processor of the integrated domain controller provides the set voltage stored in the memory to the comparison circuit. The comparison circuit compares the first voltage provided by the main power supply recovery circuit with the set voltage provided by the integrated domain controller, and provides the comparison result to the processor of the integrated domain controller.

[0083] By setting up a main voltage recovery circuit to detect the output voltage of the main power supply, the integrated domain controller controls the switching circuit according to the comparison value of the output voltage of the main power supply and the set voltage to switch the power supply component to the main power supply or the auxiliary power supply. The integrated domain controller can independently complete the power supply switching between the main power supply and the auxiliary power supply to ensure that in the event of an abnormal power supply from the main power supply, the auxiliary power supply can promptly replace the main power supply for power supply.

[0084] In some embodiments, Figure 5 As shown, the comparison circuit includes: a first comparison circuit and a second comparison circuit. The first comparison circuit and the second comparison circuit are respectively connected to the main power supply recovery circuit. The main power supply recovery circuit is also used to obtain a first voltage and transmit the first voltage to the first comparison circuit and the second comparison circuit.

[0085] The first comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit the first set voltage to the first comparison circuit; the first comparison circuit is used to obtain the first voltage. The first comparison circuit is used to compare the first voltage with the first set voltage and transmit the comparison result to the integrated domain controller.

[0086] The second comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a second set voltage to the second comparison circuit, and the second set voltage is less than the first set voltage. The second comparison circuit is used to obtain the first voltage, and when the first voltage is less than the first set voltage, obtain the second set voltage; the second comparison circuit is also used to compare the first voltage with the second set voltage, and transmit the comparison result to the integrated domain controller.

[0087] In some embodiments, Figure 5 As shown, the first comparison circuit compares the output voltage U0 (first voltage) of the main power supply with the first set voltage U REF1A first comparison result is obtained by comparison, and the first comparison result is transmitted to the integrated domain controller.

[0088] When the first comparison result shows that the output voltage U0 of the main power supply is greater than or equal to the first set voltage U REF1 In the case of, the integrated domain controller controls the switching circuit to output the output voltage of the main power supply according to the first comparison result. Figure 6 As shown, when the integrated domain controller determines that the output voltage of the main power supply drops to the second set voltage U according to the comparison results of the first comparison circuit and the second comparison circuit, REF2 When the integrated domain controller sends a control signal to control the bridge drive circuit, the PWM wave sent by the bridge drive circuit enables the first MOS tube Q1 and the second MOS tube Q2 to turn on, and the transformer T converts the voltage provided by the high-voltage power supply into a second voltage.

[0089] When the first comparison result shows that the output voltage U0 of the main power supply is less than the first set voltage U REF1 In the case of the second comparison circuit, the output voltage U0 of the main power supply is compared with the second set voltage U REF2 A second comparison result is obtained by comparison, and the integrated domain controller controls the bridge drive circuit to send a drive signal to the control electrode of the first MOS tube and the controller of the second MOS tube according to the second comparison result, and the switching circuit outputs the output voltage of the auxiliary power supply.

[0090] Then, the main power supply recovery circuit continues to recover the output voltage of the main power supply. When the output voltage U0 of the main power supply is greater than or equal to the first set voltage U REF1 In this case, the switching circuit outputs the output voltage of the main power supply.

[0091] In some embodiments, Figure 5 and Figure 6 As shown, the power supply component also includes: a secondary power supply recovery circuit. The secondary power supply recovery circuit is connected between the step-down circuit and the integrated domain controller; the secondary power supply recovery circuit is used to obtain the sampled voltage of the secondary power supply and transmit the sampled voltage to the integrated domain controller.

[0092] By setting up an auxiliary power supply recovery circuit, the output voltage of the auxiliary power supply is monitored in real time, so as to promptly detect whether there is any power supply abnormality in the auxiliary power supply.

[0093] In some embodiments, Figure 5 and Figure 6 As shown, the auxiliary power supply recovery circuit includes: a capacitor group, multiple current limiting resistors and a voltage detection circuit. The capacitor group is connected between the positive and negative electrodes of the high-voltage power supply; the capacitor group includes multiple voltage-dividing capacitors connected in series. A current-limiting resistor is arranged in parallel with a voltage-dividing capacitor. One end of the voltage detection circuit is connected between any two adjacent voltage-dividing capacitors, and the other end of the voltage detection circuit is connected to the integrated domain controller.

[0094] By setting a capacitor group and multiple current-limiting resistors, the output voltage of the high-voltage power supply is divided, and the voltage detection circuit samples the voltage after the capacitor group and multiple current-limiting resistors are divided to monitor the output voltage of the auxiliary power supply in real time.

[0095] In some embodiments, Figure 4 As shown, the power supply component also includes: a first power supply, a second power supply and a third power supply. The first power supply includes a first power supply input terminal and a plurality of first power supply output terminals; the first power supply input terminal is connected to the output terminal of the power supply selection circuit, and the first power supply output terminal is connected to the primary load. The second power supply includes a second power supply input terminal and a plurality of second power supply output terminals; the second power supply input terminal is connected to the output terminal of the power supply selection circuit, and the second power supply output terminal is connected to the integrated domain controller. The third power supply includes a plurality of third power supply input terminals and a plurality of third power supply output terminals; each third power supply input terminal is connected to a second power supply output terminal; and the third power supply output terminal is connected to the third-level load.

[0096] For example, the first-level load includes but is not limited to each driver chip in the integrated domain controller domain control system 10; for example, bridge driver, internal and external lighting driver chip, etc. The second-level load includes but is not limited to the integrated domain controller; for example, the logic power supply of each driver chip. The third-level load includes but is not limited to the communication module, gateway component and other internal functional modules in the domain control system 10; for example, CAN\LIN\ETH, etc.

[0097] For example, Figure 4 As shown, the filter voltage stabilization circuit is connected to the main power supply and the auxiliary power supply through the switching circuit; the switching circuit controls the main power supply or the auxiliary power supply to be connected to the filter voltage stabilization circuit. The filter voltage stabilization circuit is used to filter and stabilize the output voltage of the main power supply or the auxiliary power supply to ensure the reliability of the voltage connected to the load.

[0098] In some embodiments, Figure 6 As shown, the filtering and voltage stabilizing circuit includes: an anti-reverse diode D3, a first filter capacitor C1, a second filter capacitor C2 and a filter inductor L1. The input pole of the anti-reverse diode D3 is connected to the first end of the output inductor, the output pole of the anti-reverse diode D3 is connected to the first end of the first filter capacitor C1, and the second end of the first filter capacitor C1 is connected to the second end of the output inductor. The first end of the filter inductor L1 is connected to the first end of the first filter capacitor C1, the second end of the filter inductor L1 is connected to the first end of the second filter capacitor C2, and the second end of the second filter capacitor C2 is connected to the second end of the first filter capacitor C1.

[0099] In some embodiments, Figure 4As shown, the domain control system 10 further includes: a power management chip SBC (System Basic Chip), a plurality of low dropout linear regulators LDO (Low Dropout Regulator) and a plurality of DC converters DCDC.

[0100] The power management chip SBC is connected between the integrated domain controller and the power selection circuit, and is used for controlling the voltage input to the integrated domain controller.

[0101] A low dropout linear regulator LDO is connected between a communication unit and a power management chip SBC, and the power management chip SBC is used to control the voltage input to the communication unit. The communication unit here refers to the communication unit corresponding to each control unit in the functional domain component (for example Figure 3 The gateway component shown in FIG), the communication unit is used to realize the communication between each control unit in the functional domain component and other structures (such as other functional domain components).

[0102] A DC converter DCDC is connected between a functional module and a power management chip SBC, and the power management chip SBC is used to control the voltage of the input functional module. The functional module here refers to the structure of each control unit in the functional domain component for realizing the target function of the control unit.

[0103] It should be noted that the technical features such as the processor, bridge drive circuit, memory and control unit involved in the present disclosure should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the inventive point of the present disclosure. The present disclosure will not further elaborate on them.

[0104] It should be noted that the division of modules in the embodiments of the present application is schematic and is merely a logical function division. There may be other division methods in actual implementation.

[0105] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A domain control system, characterized in that: include: Power domain components, chassis domain components, body domain components and integrated domain controllers; The power domain component, the chassis domain component and the body domain component are respectively connected to the integrated domain controller; the integrated domain controller is used to control the power domain component, the chassis domain component and the body domain component.

2. The domain control system according to claim 1, characterized in that: The domain control system further includes: a power supply component; the power supply component is respectively connected to the integrated domain controller, the power domain component and the chassis domain component; the power supply component is used to supply power to the integrated domain controller, the power domain component and the chassis domain component; The power supply component includes: a power selection circuit and a bridge drive circuit; the power selection circuit includes: A main power supply, configured to provide a first voltage; A secondary power supply, used to provide a second voltage; the secondary power supply includes a high-voltage power supply and a step-down circuit; the high-voltage power supply is connected to the step-down circuit, and the bridge drive circuit is connected between the integrated domain controller and the step-down circuit; the bridge drive circuit is used to control the output voltage of the step-down circuit under the control of the integrated domain controller; A switching circuit is connected to the integrated domain controller, the main power supply and the step-down circuit; the switching circuit is used to select the first voltage or the second voltage under the control of the integrated domain controller, and provide the selected voltage to the integrated domain controller, the power domain component and the chassis domain component.

3. The domain control system according to claim 2, characterized in that: The step-down circuit comprises: a first MOS tube, a second MOS tube, a first diode, a second diode and a transformer; the transformer comprises an input inductor and an output inductor, and the output inductor serves as the output end of the transformer; The control electrode of the first MOS tube is connected to the bridge drive circuit, the first electrode of the first MOS tube is connected to the positive electrode of the high-voltage power supply, and the second electrode of the first MOS tube is connected to the first end of the input inductor; The control electrode of the second MOS tube is connected to the bridge drive circuit, the first electrode of the second MOS tube is connected to the second end of the input inductor, and the second electrode of the first MOS tube is connected to the negative electrode of the high-voltage power supply; The input electrode of the first diode is connected to the first electrode of the second MOS transistor, and the output electrode of the first diode is connected to the first electrode of the second MOS transistor; An input electrode of the second diode is connected to the second electrode of the second MOS tube, and an output electrode of the second diode is connected to the second electrode of the second MOS tube.

4. The domain control system according to claim 2, characterized in that: The power supply component also includes: A main power supply recovery circuit is connected between the main power supply and the integrated domain controller; the main power supply recovery circuit is used to obtain the first voltage and transmit the first voltage to the integrated domain controller; A comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a set voltage to the comparison circuit, the comparison circuit is used to obtain the first voltage and the set voltage, compare the first voltage and the set voltage, and transmit the comparison result to the integrated domain controller.

5. The domain control system according to claim 4, characterized in that: The comparison circuit comprises: a first comparison circuit, connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a first set voltage to the first comparison circuit; the first comparison circuit is used to obtain the first voltage; the first comparison circuit is used to compare the first voltage with the first set voltage, and transmit the comparison result to the integrated domain controller; A second comparison circuit is connected between the main power supply and the integrated domain controller; the integrated domain controller is used to transmit a second set voltage to the second comparison circuit, and the second set voltage is less than the first set voltage; the second comparison circuit is used to obtain the first voltage, and when the first voltage is less than the first set voltage, obtain the second set voltage; the second comparison circuit is also used to compare the first voltage and the second set voltage, and transmit the comparison result to the integrated domain controller.

6. The domain control system according to claim 2, characterized in that: The power supply assembly further includes: a secondary power supply recovery circuit; The auxiliary power supply recovery circuit is connected between the step-down circuit and the integrated domain controller; the auxiliary power supply recovery circuit is used to obtain the sampled voltage of the auxiliary power supply and transmit the sampled voltage to the integrated domain controller.

7. The domain control system according to claim 6, characterized in that: The auxiliary power supply recovery circuit comprises: A capacitor group, connected between the positive electrode and the negative electrode of the high-voltage power supply; the capacitor group includes a plurality of voltage-dividing capacitors connected in series; A plurality of current limiting resistors, one of the current limiting resistors and one of the voltage dividing capacitors being arranged in parallel; A voltage detection circuit, one end of which is connected between any two adjacent voltage-dividing capacitors, and the other end of which is connected to the integrated domain controller.

8. The domain control system according to claim 1, characterized in that: The integrated domain controller includes: at least one processor, the processor is connected to the power domain component, the chassis domain component and the body domain component; the processor is used to control the power domain component, the chassis domain component and the body domain component.

9. The domain control system according to claim 2, characterized in that: The power supply assembly also includes: a first power supply, a second power supply and a third power supply; The first power supply includes: a first power input terminal and a plurality of first power output terminals; the first power input terminal is connected to the output terminal of the power selection circuit, and the first power output terminal is connected to the primary load; The second power supply includes: a second power input terminal and a plurality of second power output terminals; the second power input terminal is connected to the output terminal of the power selection circuit, and the second power output terminal is connected to the integrated domain controller; The third power supply includes: a plurality of third power input terminals and a plurality of third power output terminals; one of the third power input terminals is connected to one of the second power output terminals; and the third power output terminal is connected to a three-level load.

10. A vehicle, characterized in that: The invention comprises the domain control system according to any one of claims 1 to 9.

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