Power domain system and vehicle
By integrating vehicle control system software functions into the power domain controller and employing multi-core chips and watchdog reset circuits, the complexity and cost of vehicle electronic and electrical architecture have been solved, achieving both software reliability and reduced hardware costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-12
- Publication Date
- 2026-03-31
AI Technical Summary
The functional requirements of vehicle electronic and electrical architecture lead to increased design complexity and higher costs.
By integrating the software functions of the vehicle control system, electric drive control system, battery management system, charging system and DC-DC conversion system through the power domain controller, and using multi-core chips for communication, combined with watchdog reset circuit and SBC power supply circuit, the reliability of software code and the reduction of hardware cost are achieved.
It reduced vehicle hardware costs and improved the reliability of software code, reduced communication latency and failures between systems, and increased the level of integration.
Smart Images
Figure CN121756929A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to a power domain system and a vehicle. Background Technology
[0002] With the advancement of automotive electronic and electrical technology, sensor technology, chip technology, and in-vehicle network technology, and the development of vehicle electronic control systems, the functions of vehicle electronic and electrical architecture have gradually become richer.
[0003] In related technologies, the electronic and electrical architecture of a vehicle is divided into corresponding systems to meet different functional requirements in order to realize different functions of the vehicle. However, this approach increases the complexity of the vehicle's architecture design and raises the application cost. Summary of the Invention
[0004] This application aims to at least partially address one of the technical problems in the related art. Therefore, the first objective of this application is to propose a power domain system that integrates the software functions of the vehicle control system, electric drive control system, battery management system, charging system, and DC-DC conversion system through a power domain controller. This software integration improves the reliability of the software code while reducing hardware costs.
[0005] The second objective of this application is to propose a vehicle.
[0006] To achieve the above objectives, the first aspect of this application proposes a power domain system for use in a vehicle. The system includes: a drive motor, a power battery, a high-voltage relay box, and a reducer; and a power domain controller connected to the drive motor, power battery, high-voltage relay box, and reducer respectively. The power domain controller integrates software functions of the vehicle's overall control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, and is configured to control one or more of the drive motor, power battery, high-voltage relay box, and reducer according to the vehicle's current state and / or external control commands.
[0007] According to an embodiment of this application, a power domain system is applied to a vehicle. The system includes: a drive motor, a power battery, a high-voltage relay box, and a reducer; and a power domain controller, which is connected to the drive motor, power battery, high-voltage relay box, and reducer respectively. The power domain controller integrates the software functions of the vehicle's overall control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, and is configured to control one or more of the drive motor, power battery, high-voltage relay box, and reducer according to the vehicle's current state and / or external control commands. Therefore, this system integrates the software functions of the overall control system, electric drive control system, battery management system, charging system, and DC-DC conversion system through the power domain controller. This software integration improves the reliability of the software code and reduces hardware costs.
[0008] In addition, the dynamic domain system according to the above embodiments of this application may also have the following additional technical features: According to one embodiment of this application, the power domain controller includes a multi-core chip. The multiple cores of the multi-core chip correspond to the vehicle control system, the electric drive control system, the battery management system, the charging system, and the DC-DC conversion system, and are configured to perform corresponding system functions. The multiple cores communicate with each other based on a core-decrease communication method.
[0009] According to one embodiment of this application, the power domain controller includes a central processing unit (CPU) and digital-to-analog converter (DAC) acquisition circuit, digital switch input circuit, pulse signal input circuit, communication circuit, analog-to-digital converter (ADC) processing circuit, digital switch output circuit, and pulse signal output circuit, all connected to the CPU. The CPU is configured to integrate the software functions of the vehicle's overall control system, electric drive control system, battery management system, charging system, and DC-DC converter system, and to schedule and implement corresponding software functions based on the vehicle's current state and / or external control commands. The DAC acquisition circuit is configured to acquire analog signals from the power domain system, convert the analog signals into corresponding digital signals, and send them to the CPU. The digital switch input circuit is configured to acquire digital signals from the power domain system, convert the digital signals into standard digital signals, and send them to the CPU. The pulse signal input circuit is configured to acquire PWM (Pulse Width Modulation) signals from the power domain system. The circuit is configured to receive a first digital signal output by the central processing unit (CPU) and forward the PWM signal to the central processing unit (CPU); the communication circuit is configured to establish communication between the CPU and an external ECU; the analog-to-digital conversion processing circuit is configured to receive the first digital signal output by the CPU and convert the first digital signal into an analog output signal for output; the digital switch output circuit is configured to receive and output the second digital signal generated by the CPU; and the pulse signal output circuit is configured to output the PWM signal.
[0010] According to one embodiment of this application, the communication circuit is connected to the vehicle's central gateway and is configured to establish bus communication between the central processing unit and the central gateway, so as to establish communication with the vehicle's body domain control, chassis domain system, cockpit domain system and intelligent driving domain system through the central gateway.
[0011] According to one embodiment of this application, the communication circuit is also connected to the power battery, which includes multiple battery cells and an internal acquisition circuit. The internal acquisition circuit is configured to acquire the feature value of each battery cell and send the acquired feature value set to the central processing unit through the communication circuit, so that the central processing unit can control the charging and discharging of the power battery according to the feature value set.
[0012] According to one embodiment of this application, the power domain controller further includes a watchdog reset circuit, which is connected to the central processing unit and configured to perform a software code reset on the central processing unit in the event that the central processing unit is in a software malfunction and cannot operate normally.
[0013] According to one embodiment of this application, when the central processing unit is a multi-core chip, the watchdog reset circuit is configured to acquire the software running status of each core in the multi-core chip, and when it is determined that one of the cores is in a software abnormality and cannot run normally, the abnormal core is identified and the software code is reset for the abnormal core.
[0014] According to one embodiment of this application, a logical ring channel is established between multiple chip cores of a multi-core chip. The core sends heartbeat data to the next core based on the logical ring channel according to a preset period. The received heartbeat data is used for heartbeat detection. The heartbeat data includes the identification code and status code of the corresponding core. The watchdog reset circuit identifies abnormal cores based on the heartbeat detection results of each core.
[0015] According to one embodiment of this application, the power domain controller further includes an SBC (System Basis Chip) power supply circuit, which is configured to accept an external power supply voltage and perform voltage conversion on the external power supply voltage to obtain a first target power supply voltage and a second target power supply voltage, so as to supply power to the central processing unit, the digital-to-analog converter acquisition circuit, the digital switch input circuit, the pulse signal input circuit, the communication circuit, the analog-to-digital converter processing circuit, the digital switch output circuit, the pulse signal output circuit, and the watchdog reset circuit based on the first target power supply voltage and the second target power supply voltage.
[0016] To achieve the above objectives, a second aspect of this application provides a vehicle comprising: the aforementioned power domain system; a body domain system, a cockpit domain system, an intelligent driving domain system, a chassis domain system, and a central gateway.
[0017] According to the vehicle embodiment of this application, the above-described power domain system realizes the software functions of the vehicle control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, thereby improving the reliability of the software code and reducing the overall vehicle cost.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the connection of the dynamic domain system according to an embodiment of this application; Figure 2This is a schematic diagram of the connection of a dynamic domain system according to a specific embodiment of this application; Figure 3 This is a schematic diagram of the connection of a vehicle according to an embodiment of this application. Detailed Implementation
[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0021] The power domain system and vehicle proposed in this application are described below with reference to the accompanying drawings.
[0022] Figure 1 This is a schematic diagram of the connection of the dynamic domain system according to an embodiment of this application.
[0023] like Figure 1 As shown, the power domain system 100 of this application embodiment is applied to a vehicle. The power domain system 100 includes: a drive motor 10, a power battery 20, a high-voltage relay box 30, and a reducer 40; and a power domain controller 50, which is connected to the drive motor 10, the power battery 20, the high-voltage relay box 30, and the reducer 40 respectively. The power domain controller 50 integrates the software functions of the vehicle's overall control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, and is configured to control one or more of the drive motor 10, the power battery 20, the high-voltage relay box 30, and the reducer 40 according to the current state of the vehicle and / or external control commands.
[0024] Specifically, in combination Figure 1 As shown, the power domain controller 50 is electrically connected to the drive motor 10 and the power battery 20. The internal MCU (Microcontroller Unit) module of the power domain controller 50 implements functions such as forward and reverse rotation, speed control, and torque control of the drive motor through control commands. In addition, information such as the voltage, current, and temperature of the individual modules inside the power battery 20 are collected by the power battery 20's built-in acquisition circuit. After the information is collected, it is transmitted to the BMS (Battery Management System) module in the power domain controller through a CAN (Controller Area Network) signal to realize the development of the BMS control algorithm.
[0025] In the power domain system 100, the drive motor 10 performs functions such as forward rotation, reverse rotation, speed control, and torque control according to the instructions issued by the power domain controller 50, providing power output to the vehicle. The high-voltage relay box 30 realizes the high-voltage connection control between the drive motor 10 and the power battery 20, and the reducer 40 realizes the matching speed and torque transmission between the drive motor 10 and the vehicle.
[0026] In the system architecture of the power domain system 100 in this embodiment, the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (On-Board Charger, OBC), direct current to direct current (DC-DC) conversion system, drive motor 10, high-voltage relay box 30, and reducer 40 are integrated into a power domain structure through software and physical integration. The software code integration of the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system is realized through a power domain controller. While conforming to the development trend of domain centralization, this reduces the communication latency between the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system, reduces inter-system communication failures, improves software reliability, and reduces hardware costs.
[0027] In one embodiment of this application, the power domain controller 50 includes a multi-core chip. The multiple cores of the multi-core chip correspond to the vehicle control system, electric drive control system, battery management system, charging system and DC-DC conversion system, and are configured to perform corresponding system functions. The multiple cores communicate with each other based on a core-decrease communication method.
[0028] In other words, the power domain controller 50 uses a multi-core chip to integrate the software functions of the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system. The vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system (DC-DC) run in different cores of the multi-core chip, and communicate with each other through inter-core communication, reducing communication latency and improving software reliability.
[0029] In one embodiment of this application, the power domain controller 50 includes a central processing unit 51 and digital-to-analog converter acquisition circuit 52, digital switch input circuit 53, pulse signal input circuit 54, communication circuit 55, analog-to-digital converter processing circuit 56, digital switch output circuit 57, and pulse signal output circuit 58, all connected to the central processing unit 51. The central processing unit 51 is configured to integrate the software functions of the vehicle control system, electric drive control system, battery management system, charging system, and DC-DC converter system, and to schedule and implement corresponding software functions according to the current state of the vehicle and / or external control commands. The digital-to-analog converter acquisition circuit 52 is configured to acquire analog signals in the power domain system, convert the analog signals into corresponding digital signals, and send them to the central processing unit 50. The processing unit 51 includes a digital switch input circuit 53 configured to acquire digital signals from the power domain system, convert the digital signals into standard digital signals, and send them to the central processing unit 51; a pulse signal input circuit 54 configured to acquire PWM signals from the power domain system and forward the PWM signals to the central processing unit 51; a communication circuit 55 configured to establish communication between the central processing unit 51 and an external ECU; an analog-to-digital conversion processing circuit 56 configured to receive a first digital signal output by the central processing unit 51 and convert the first digital signal into an analog output signal for output; a digital switch output circuit 57 configured to receive and output a second digital signal generated by the central processing unit 51; and a pulse signal output circuit 58 configured to output a PWM signal.
[0030] Specifically, in combination Figure 2 As shown, the power domain controller 50 adopts a multi-core integrated circuit design, including a central processing unit (MCU) 51, a digital-to-analog converter acquisition circuit (AD) 52, a digital switch input circuit (DI) 53, a pulse signal input circuit 54, a communication circuit 55, an analog-to-digital converter processing circuit (DA) 56, a digital switch output circuit (DO) 57, and a pulse signal output circuit 58.
[0031] The circuit includes: an analog-to-digital converter (AD) 52 for acquiring analog signals from the power domain controller; a digital switch input circuit (DI) 53 for acquiring digital signals from the power domain controller; a pulse signal input circuit (54) for acquiring PWM signals from the power domain controller; a communication circuit (55) for communicating between the power domain controller and an external ECU using CAN / CANFD; an analog-to-digital converter (DA) 56 for outputting analog signals from the power domain controller; a digital switch output circuit (DO) 57 for outputting digital signals from the power domain controller; and a pulse signal output circuit (58) for outputting PWM signals from the power domain controller.
[0032] The central processing unit 51, acting as the brain of the power domain controller, runs the software code of the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC converter system (DC-DC). It processes the information collected by the analog-to-digital converter acquisition circuit 52 (AD), digital development input circuit (DI), and pulse signal input circuit 54. Based on the input signals and the functions of the software code of the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC converter system (DC-DC), it implements output control for the analog-to-digital converter processing circuit 56 (DA), digital switch output circuit 57 (DO), and pulse signal output circuit 58.
[0033] Combination Figure 2 and Figure 3 As shown, in one embodiment of this application, the communication circuit 55 is connected to the vehicle's central gateway 200 and is configured to establish bus communication between the central processing unit 51 and the central gateway 200, so as to establish communication with the vehicle's body domain control system 300, chassis domain system 400, cockpit domain system 500 and intelligent driving domain system 600 through the central gateway 200.
[0034] Specifically, the vehicle includes: the power domain system 100, the body domain system 300, the cockpit domain system 400, the intelligent driving domain system 600, the chassis domain system 500, and the central gateway 200 in the above embodiments. The vehicle body domain system 300 controls the vehicle body module and its accessories, including but not limited to functions such as door, headlight, wiper, and key control; the cockpit domain system 400 controls the vehicle instrument, multimedia, and its accessories, including but not limited to instrument display, multimedia app (Application), human-machine interaction, functional devices, and sensor information acquisition; the intelligent driving domain system 600 controls the vehicle's autonomous driving, assisted driving, and its accessories, including but not limited to lane keeping, adaptive cruise control, automatic parking, and sensor information acquisition; the chassis domain system 500 controls the vehicle's braking, gear shifting, vehicle stability, and its accessories, including but not limited to braking force control, vehicle speed calculation, electronic braking, and sensor information acquisition; and the central gateway 200 enables communication and information exchange between the various vehicle domain systems, including but not limited to the mutual conversion between different forms of communication messages such as CAN / CANFD (CAN with Flexible Data Rate) / Ethernet.
[0035] In one embodiment of this application, the communication circuit 55 is also connected to the power battery 20. The power battery 20 includes multiple battery cells and an internal acquisition circuit. The internal acquisition circuit is configured to acquire the feature value of each battery cell and send the acquired feature value set to the central processing unit through the communication circuit 55 so that the central processing unit can control the charging and discharging of the power battery 20 according to the feature value set.
[0036] In other words, the characteristic values of the individual cell voltage, individual cell current, and individual cell temperature of the power battery module 20 are collected through the internal acquisition circuit. The collected information is packaged into CAN messages and sent to the central processing unit 55 of the power domain controller 50. The power domain controller 50 integrates the vehicle demand information to realize the charging and discharging function commands of the power battery 20.
[0037] In one embodiment of this application, the power domain controller 50 further includes a watchdog reset circuit 59, which is connected to the central processing unit 51 and configured to perform a software code reset on the central processing unit 51 when the central processing unit 51 is in a software malfunction and cannot operate normally.
[0038] In other words, when the software code of the central processing unit 51 fails to run normally due to an abnormal situation, the watchdog reset circuit 59 is used to reset the software code to ensure that the power domain controller works normally.
[0039] Furthermore, the watchdog reset circuit 59's reset function is activated in the following two ways: 1) Initial enable timing after hardware power-on.
[0040] In other words, after the central processing unit 51 is powered on and the clock and memory are initialized, the hardware window watchdog is immediately enabled to ensure that any software crashes, infinite loops, or freezes during the initialization phase can be detected and reset from the very beginning of startup.
[0041] 2) Reset and startup logic judgment for specific tasks or modules that need to be independently monitored during software operation.
[0042] In other words, after the system successfully starts, the software operation is monitored based on a preset judgment window to determine whether a reset function needs to be activated. Furthermore, the judgment window can be dynamically adjusted according to the stage the system is in. For example, during high-load startup tasks such as the initialization of the central processing unit 51 and memory self-test, the judgment window set by the watchdog reset circuit 59 is increased, and then restored to its standard value after entering a stable operating state to avoid accidental triggering during startup.
[0043] In one embodiment of this application, when the central processing unit 51 is a multi-core chip, the watchdog reset circuit 59 is configured to acquire the software running status of each core in the multi-core chip, and when it is determined that one of the cores is in a software abnormality and cannot run normally, the abnormal core is identified and the software code is reset for the abnormal core.
[0044] In other words, the watchdog reset circuit 59 can perform a reset function start evaluation based on the software running status of each core, and when it is determined that a core is in a software abnormality and cannot run normally, it identifies the core and other cores associated with it to determine the number and location of the abnormal cores, thereby performing a software code reset for the abnormal cores, which improves the reset accuracy.
[0045] In one embodiment of this application, a logical ring channel is established between multiple chip cores of a multi-core chip. The cores send heartbeat data to the next core based on the logical ring channel according to a preset period. The received heartbeat data is used for heartbeat detection. The heartbeat data includes the identification code and status code of the corresponding core. The watchdog reset circuit identifies abnormal cores based on the heartbeat detection results of each core.
[0046] Specifically, taking a multi-core chip with N cores as an example, a logical ring channel is established among the N cores. Each core periodically sends heartbeat data containing its own ID and status code to the next core, checks the heartbeat from the previous core, and reports to the watchdog reset circuit 59 when the heartbeat data is interrupted or the heartbeat data verification is inappropriate. The watchdog reset circuit 59 can monitor the software status of each core based on the heartbeat data. When any core software fails, the heartbeat interruption will be immediately detected and reported by its downstream cores, accurately locating the faulty core to achieve precise fault location. At the same time, the ring structure avoids overall monitoring failure caused by the failure of a single monitoring node, preventing the occurrence of common-cause failures.
[0047] In one embodiment of this application, the power domain controller 50 further includes an SBC power supply circuit 510, which is configured to accept an external power supply voltage and perform voltage conversion on the external power supply voltage to obtain a first target power supply voltage and a second target power supply voltage, so as to supply power to the central processing unit 51, the digital-to-analog converter acquisition circuit 52, the digital switch input circuit 53, the pulse signal input circuit 54, the communication circuit 55, the analog-to-digital converter processing circuit 56, the digital switch output circuit 57, the pulse signal output circuit 58, and the watchdog reset circuit 59 based on the first target power supply voltage and the second target power supply voltage.
[0048] In other words, the SBC power supply circuit 510 converts the external 12V power supply of the power domain controller 50 into 5V / 3.3V to power other modules within the power domain controller 50.
[0049] As a specific embodiment of this application, combined with Figure 1-3 As shown, the power domain system 100 integrates the vehicle control unit (VCU), electric drive control unit (MCU), battery management system (BMS), charging system (OBC), and DC-DC converter (DC-DC) into a power domain controller 50 through software functions, realizing the transformation from the original distributed controller control to centralized domain control architecture control, reducing communication latency and improving software reliability; at the same time, it physically integrates the drive motor 10, high-voltage relay box 30, reducer 40, and power battery 20, improving the integration level and reducing the space occupation.
[0050] The power domain controller 50 adopts a multi-core integrated circuit design, including a central processing unit (MCU), a digital-to-analog converter (AD) acquisition circuit, a digital switch input circuit (DI), a pulse signal input circuit, a communication circuit, an analog-to-digital converter (DA) processing circuit, a digital switch output circuit (DO), a pulse signal output circuit, a watchdog reset circuit, and an SBC power supply circuit.
[0051] The system comprises the following components: a central processing unit (MCU) for software code scheduling and function code implementation; an analog-to-digital converter (AD) for analog signal acquisition by the power domain controller; a digital input switch (DI) for digital signal acquisition by the power domain controller; a pulse signal input circuit for PWM signal acquisition by the power domain controller; a communication circuit for communication between the power domain controller and an external ECU, using CAN / CANFD; an analog-to-digital converter (DA) for analog signal output by the power domain controller; a digital output switch (DO) for digital signal output by the power domain controller; a pulse signal output circuit for PWM signal output by the power domain controller; a watchdog reset circuit to reset the software code and ensure normal operation of the power domain controller when the MCU malfunctions due to an abnormality; and an SBC power supply circuit to convert the external 12V power supply to the power domain controller into 5V / 3.3V to power the aforementioned modules.
[0052] In summary, the power domain system according to the embodiments of this application is applied to a vehicle. The system includes: a drive motor, a power battery, a high-voltage relay box, and a reducer; and a power domain controller, which is connected to the drive motor, power battery, high-voltage relay box, and reducer respectively. The power domain controller integrates the software functions of the vehicle's overall control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, and is configured to control one or more of the drive motor, power battery, high-voltage relay box, and reducer according to the vehicle's current state and / or external control commands. Therefore, this system integrates the software functions of the vehicle control system, electric drive control system, battery management system, charging system, and DC-DC conversion system through the power domain controller, improving software code reliability through software integration while reducing overall vehicle cost.
[0053] Corresponding to the above embodiments, this application also proposes a vehicle.
[0054] Combination Figure 3 As shown, the vehicle in this embodiment includes: the power domain system 100 described above; the body domain system 300, the cockpit domain system 500, the intelligent driving domain system 600, the chassis domain system 400, and the central gateway 200.
[0055] As a specific embodiment of this application, such as Figure 2 and Figure 3 As shown, the vehicle includes a power domain system 100, a body domain system 300, a cockpit domain system 500, an intelligent driving domain system 600, a chassis domain system 400, and a central gateway 200.
[0056] Among them, the power domain system 100 realizes the software functions of the vehicle control unit (VCU), electric drive control unit (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system, as well as the physical integration of high-voltage relay box, drive motor, reducer, power battery, charging system (OBC), and DC-DC conversion system devices, which greatly improves the degree of integration and reduces space occupation.
[0057] Specifically, the power domain controller 100 adopts a multi-core chip to integrate the software functions of the vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system. The vehicle control system (VCU), electric drive control system (MCU), battery management system (BMS), charging system (OBC), and DC-DC conversion system (DC-DC) run on different cores of the multi-core chip, and communicate with each other through inter-core communication, reducing communication latency and improving software reliability. According to the vehicle embodiment of this application, the above-described power domain system realizes the software functions of the vehicle control system, electric drive control system, battery management system, charging system, and DC-DC conversion system, thereby improving the reliability of the software code and reducing the overall vehicle cost.
[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0061] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A power domain system, characterized by, The system is applied to a vehicle and comprises: a drive motor, a power battery, a high-voltage relay box and a reducer; a power domain controller connected to the drive motor, the power battery, the high-voltage relay box and the reducer, respectively, the power domain controller integrating software functions of a vehicle control system, an electric drive control system, a battery management system, a charging system and a direct current conversion system of the vehicle, and being configured to control one or more of the drive motor, the power battery, the high-voltage relay box and the reducer according to a current state of the vehicle and / or an external control instruction.
2. The power domain system of claim 1, wherein, The power domain controller comprises a multi-core chip, a plurality of cores of the multi-core chip corresponding to the vehicle control system, the electric drive control system, the battery management system, the charging system and the direct current conversion system, and being configured to execute corresponding system functions, and the plurality of cores communicate with each other based on a core reduction communication mode.
3. The power domain system of claim 1, wherein, The power domain controller comprises a central processing unit and an analog-to-digital conversion acquisition circuit, a digital switch input circuit, a pulse signal input circuit, a communication circuit, a digital-to-analog conversion processing circuit, a digital switch output circuit, a pulse signal output circuit connected to the central processing unit, respectively, the central processing unit is configured to integrate software functions of the vehicle control system, the electric drive control system, the battery management system, the charging system and the direct current conversion system, and to perform corresponding software function scheduling and implementation according to the current state of the vehicle and / or the external control instruction; the analog-to-digital conversion acquisition circuit is configured to acquire analog signals in the power domain system, convert the analog signals into corresponding digital signals, and send the digital signals to the central processing unit; the digital switch input circuit is configured to acquire digital signals in the power domain system, convert the digital signals into standard digital signals, and send the standard digital signals to the central processing unit; the pulse signal input circuit is configured to acquire PWM signals in the power domain system, and forward the PWM signals to the central processing unit; the communication circuit is configured to establish communication between the central processing unit and an external ECU; the digital-to-analog conversion processing circuit is configured to receive first digital signals output by the central processing unit, and convert the first digital signals into analog output signals for output; the digital switch output circuit is configured to receive and output second digital signals generated by the central processing unit; the pulse signal output circuit is configured to output PWM signals.
4. The power domain system according to claim 3, wherein the communication circuit is connected to a central gateway of the vehicle, and is configured to establish bus communication between the central processing unit and the central gateway, so as to establish communication with a vehicle body domain control, a chassis domain system, a cabin domain system and an intelligent driving domain system of the vehicle through the central gateway.
5. The power domain system of claim 4, wherein, The communication circuit is also connected with the power battery, the power battery includes a plurality of battery monomers and an internal acquisition circuit, the internal acquisition circuit is configured to acquire characteristic values of each battery monomer, and the acquired characteristic value set is sent to the central processing unit through the communication circuit, so that the central processing unit controls charging and discharging of the power battery according to the characteristic value set.
6. The power domain system of claim 3, wherein, The power domain controller further includes: A watchdog reset circuit connected with the central processing unit and configured to reset software code of the central processing unit when the central processing unit cannot normally operate due to software exception.
7. The power domain system of claim 6, wherein, In the case that the central processing unit is a multi-core chip, the watchdog reset circuit is configured to acquire software running states of each core in the multi-core chip, and to identify an abnormal core and perform software code reset on the abnormal core when it is determined that one of the cores cannot normally operate due to software exception.
8. The power domain system of claim 7, wherein, A logical ring channel is established between a plurality of core chips of the multi-core chip, and the cores send heartbeat data to the next core based on the logical ring channel according to a preset period, and perform heartbeat detection on the received heartbeat data, wherein the heartbeat data includes an identification code and a state code of the corresponding core. The watchdog reset circuit identifies the abnormal core according to the heartbeat detection result of each core.
9. The power domain system of claim 6, wherein, The power domain controller further includes: An SBC power supply circuit configured to accept an external power supply voltage, and to convert the external power supply voltage to obtain a first target power supply voltage and a second target power supply voltage, so as to supply power to the central processing unit, the digital-analog conversion acquisition circuit, the digital switch input circuit, the pulse signal input circuit, the communication circuit, the analog-digital conversion processing circuit, the digital switch output circuit, the pulse signal output circuit and the watchdog reset circuit based on the first target power supply voltage and the second target power supply voltage.
10. A vehicle characterized by comprising: It includes: The power domain system according to any one of claims 1-9; A vehicle body domain system, a cabin domain system, an intelligent driving domain system, a chassis domain system and a central gateway.