High-low voltage platform architecture, control method and storage medium

Abstract

The invention discloses a high-low voltage platform architecture, a control method and a storage medium, and relates to the field of electrical systems. According to the specific implementation scheme, the high-low voltage platform architecture at least comprises a high-voltage architecture system and a low-voltage architecture system, wherein the high-voltage architecture system comprises a high-voltage battery, a high-voltage power distribution system, a high-voltage electric control system and a high-voltage load; the low-voltage architecture system comprises a battery management system and a main control unit. The high-voltage battery is connected to the high-voltage load through the high-voltage power distribution system. The battery management system is connected with the high-voltage electric control system and the high-voltage load. The high-voltage power distribution system is in communication connection with the main control unit and the high-voltage electric control system. The high-voltage power distribution system carries out high-voltage power-on and power-off control according to a control instruction of the high-voltage electric control system. According to the embodiment of the invention, reasonable power distribution of the platform architecture is realized by designing the high-voltage and low-voltage platform architecture, and the main control unit is in communication connection with the high-voltage power distribution system, so that power-on and power-off of the high-voltage architecture are controlled by low-voltage communication, and the safety coefficient of the platform architecture is improved.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to a high and low voltage platform architecture, a control method and a storage medium. Background Art

[0002] At present, there is no mature solution for high and low voltage electrical architecture in the street sweeper industry. The high and low voltage architecture of the chassis and the high and low voltage architecture of the cleaning system are usually the same platform architecture, and there is no high and low voltage architecture design concept, which leads to unreasonable power distribution and unclear power distribution plan. In addition, the high voltage electrical solution on the traditional high-voltage architecture is only controlled by the vehicle's On switch, which poses a safety hazard to the street sweeper. Summary of the invention

[0003] The present invention provides a high- and low-voltage platform architecture, a control method and a storage medium, which improve the defects of unreasonable power distribution and unclear power distribution scheme, solve the problem that the high-voltage power scheme in the traditional high-voltage architecture is only controlled by the vehicle's On switch, and improve the safety factor of the platform architecture.

[0004] In one aspect of an embodiment of the present invention, a high-low voltage platform architecture is provided, including: a high-voltage architecture system and a low-voltage architecture system; wherein the high-voltage architecture system includes a high-voltage battery, a high-voltage power distribution system, a high-voltage electronic control system and a high-voltage load, and the high-voltage battery is connected to the high-voltage load through the high-voltage power distribution system; the low-voltage architecture system includes a battery management system and a main control unit, and the battery management system is connected to the high-voltage electronic control system and the high-voltage load respectively;

[0005] The main control unit is connected to the high-voltage power distribution system for communication, and the high-voltage power distribution system is connected to the high-voltage electric control system for communication. The high-voltage power distribution system is used to control the high-voltage power on and off according to the control instructions of the high-voltage electric control system.

[0006] In one aspect of an embodiment of the present invention, a high-low voltage platform architecture control method is provided, comprising:

[0007] In response to a platform wake-up signal, controlling the low-voltage architecture system to power on;

[0008] Detect high voltage environment information of the high voltage architecture system according to the battery management system of the low voltage architecture system;

[0009] When the high-voltage environment information meets the preset power-on conditions, the high-voltage architecture system is controlled to power on the high voltage.

[0010] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions, and the computer instructions are used to enable a processor to implement the high and low voltage platform architecture control method of any embodiment of the present invention when executed.

[0011] The high-voltage architecture system of the embodiment of the present invention includes at least the following high-voltage components: a high-voltage battery, a high-voltage power distribution system, a high-voltage electric control system and a high-voltage load, and the low-voltage architecture system includes at least the following low-voltage components: a battery management system, a main control unit, a low-voltage power distribution system and a low-voltage load. In the high-voltage architecture system, the high-voltage battery is responsible for storing electrical energy, which is distributed and transmitted to the high-voltage load through the high-voltage power distribution system. The high-voltage electric control system is connected to the high-voltage load to control and adjust the working state of the high-voltage load, wherein each high-voltage load can be connected to a domain controller, which is included in the high-voltage power control system. The high-voltage power distribution system and the domain controller corresponding to each high-voltage load are connected through a communication protocol. The battery management system is responsible for monitoring the state of the battery and is connected to the high-voltage electric control system and the high-voltage load. The main control unit, as the core of the high-low voltage architecture, establishes a connection with the high-voltage power distribution system through a communication protocol to realize the exchange of data and information, and coordinates the work of the entire high-low voltage platform architecture according to the received information. The high-voltage power distribution system receives control instructions from the high-voltage power control system through a communication connection. According to the control instructions, the high-voltage power distribution system executes the corresponding high-voltage power-on and power-off processes. The embodiment of the present invention improves the defects of unreasonable power distribution and unclear power distribution scheme by designing a high-low voltage platform architecture, and solves the problem that the high-voltage power scheme in the traditional high-voltage architecture is only controlled by the vehicle's On switch by establishing a communication connection between various components. By establishing a communication connection between the high-voltage architecture system and the low-voltage architecture system, the power on and off of the high-voltage architecture is controlled by the low-voltage communication, thereby improving the safety factor of the platform architecture.

[0012] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of a high and low voltage platform architecture provided according to Embodiment 1 of the present invention;

[0015] Figure 2 A schematic diagram of a CAN bus architecture in a high and low voltage platform architecture provided according to a first embodiment of the present invention;

[0016] Figure 3 A schematic diagram of a high-voltage architecture in a high-low voltage platform architecture provided according to a first embodiment of the present invention;

[0017] Figure 4 A schematic diagram of a low voltage architecture in a high and low voltage platform architecture provided according to a first embodiment of the present invention;

[0018] Figure 5 is a flow chart of a high and low voltage platform architecture control method provided according to Embodiment 2 of the present invention;

[0019] Figure 6 is a flow chart of another high and low voltage platform architecture control method provided according to Embodiment 3 of the present invention;

[0020] Figure 7 A power-on process of a driving high-voltage subsystem provided according to a fourth embodiment of the present invention;

[0021] Figure 8 A power-off process of a driving high-voltage subsystem is provided according to a fourth embodiment of the present invention;

[0022] Fig. 9 A power-on process of a function control high-voltage subsystem provided according to a fourth embodiment of the present invention;

[0023] Fig.10 This is a power-off process of a functional control high-voltage subsystem provided according to Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention 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 interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Embodiment 1

[0027] Figure 1 A schematic diagram of a high and low voltage platform architecture is provided for the first embodiment of the present invention. Figure 1 As shown, the high- and low-voltage platform architecture includes: a high-voltage architecture system and a low-voltage architecture system, wherein the high-voltage architecture system includes: a high-voltage battery, a high-voltage power distribution system, a high-voltage electronic control system and a high-voltage load, and the high-voltage battery is connected to the high-voltage load through the high-voltage power distribution system; the low-voltage architecture system includes a battery management system and a main control unit, and the battery management system is respectively connected to the high-voltage electronic control system and the high-voltage load.

[0028] In the embodiment of the present invention, the high-voltage battery refers to an energy storage device, and the electric energy stored in the high-voltage battery provides power for the entire high-voltage architecture. The high-voltage power distribution system refers to a system for distributing and transmitting electric energy in the high-voltage architecture system. The high-voltage power distribution system distributes electric energy to each high-voltage load to meet the power demand of the load. In addition, the high-voltage power distribution system can also flexibly dispatch and distribute electric energy according to the load power consumption and power consumption time. When a fault occurs, the high-voltage power distribution system can quickly cut off the fault source to prevent the accident from expanding. The high-voltage electric control system can be understood as a component that integrates multiple control functions and is used to control and adjust the working state of the high-voltage load. For example, the high-voltage electric control system may include: an oil pump motor controller or a high-voltage water pump motor controller. The high-voltage load refers to a working component connected to the high-voltage electric control system and requires high-voltage electric energy to drive. For example, the high-voltage load may include: an oil pump motor or a high-voltage water pump motor. The main control unit is the core control component of the high-low voltage architecture, responsible for the control and coordination of the entire high-low voltage architecture. For example, the purpose of the main control unit may include: vehicle status monitoring or fault diagnosis. The battery management system is the component responsible for monitoring the status of the high-voltage battery, including but not limited to: battery voltage, current or temperature.

[0029] Specifically, the high-voltage architecture system is composed of a series of high-voltage components, which include at least: high-voltage batteries, high-voltage power distribution systems, high-voltage electronic control systems and high-voltage loads. In the high-voltage architecture system, the high-voltage battery, as an energy storage device, is responsible for storing electrical energy and providing the required high-voltage electrical energy for the high-voltage architecture. These electrical energies are distributed and transmitted to the high-voltage loads through the high-voltage power distribution system. The high-voltage electronic control system is connected to the high-voltage load to control and adjust the working state of the high-voltage load. In the high-voltage architecture, the high-voltage battery is connected to the high-voltage load through the high-voltage power distribution system. The low-voltage architecture system is composed of a series of low-voltage components, which include at least: a battery management system and a main control unit. In the low-voltage architecture system, the battery management system is responsible for monitoring the status of the battery and is connected to the high-voltage electronic control system and the high-voltage load. The main control unit, as the core of the high-low voltage architecture, coordinates the work of the entire high-low voltage architecture based on the received data.

[0030] See also Figure 1As shown, the high and low voltage platform architecture also includes: the main control unit is communicatively connected to the high voltage power distribution system, the high voltage power distribution system is communicatively connected to the high voltage electric control system, and the high voltage power distribution system is used to perform high voltage power up and down control according to the control instructions of the high voltage electric control system.

[0031] In an embodiment of the present invention, a communication connection refers to a connection established between different systems or components through a communication protocol. For example, the communication protocol may include: a controller area network (CAN) bus protocol or a local interconnect network (LIN) bus protocol. Different systems or components can exchange data and transfer information through the communication connection.

[0032] The control instruction can be understood as a command that guides the behavior of the system. The high-voltage power distribution system performs high-voltage power on and off according to the command. For example, the control instruction may include: a system power-on instruction or a system power-off instruction.

[0033] High voltage power on and off refers to the process of starting and shutting down the high voltage architecture in the high voltage architecture. The high voltage power on process may include: low voltage system wake-up, high voltage system self-check, high voltage connection, high voltage relay closure, system initialization and high voltage architecture commissioning; the high voltage power off process may include: system status judgment, high voltage load cut-off, high voltage connection disconnection, high voltage relay disconnection and high voltage system reset.

[0034] Specifically, a connection is established between the main control unit and the high-voltage power distribution system through a communication protocol to realize the exchange of data and information. A connection is established between the high-voltage power distribution system and the high-voltage electronic control system through a communication protocol. The high-voltage power distribution system receives control instructions from the high-voltage electronic control system through the communication connection. According to the control instructions, the high-voltage power distribution system executes the corresponding high-voltage power-on process or high-voltage power-off process.

[0035] Based on the above embodiments, the high-voltage architecture system includes: a driving high-voltage subsystem and a functional control high-voltage subsystem. Accordingly, the high-voltage power distribution system at least includes a driving power distribution system corresponding to the driving high-voltage subsystem and a functional power distribution system corresponding to the functional control high-voltage subsystem. The driving power distribution system is communicatively connected to the high-voltage electronic control system of the driving high-voltage subsystem and the functional power distribution system is communicatively connected to the high-voltage electronic control system of the functional control high-voltage subsystem.

[0036] In an embodiment of the present invention, the driving high-voltage subsystem can be understood as a system in the high-voltage architecture system that is specifically responsible for driving, including all high-voltage components related to driving, for example, a high-voltage battery or a high-voltage load; the functional control high-voltage subsystem can be understood as a system in the high-voltage architecture system that is responsible for performing non-driving functions, wherein the non-driving functions may include: a water spraying function or a cleaning function; the driving power distribution system can be understood as a part in the high-voltage power distribution system that is specifically responsible for distributing and transmitting electrical energy for the driving high-voltage subsystem; the functional power distribution system can be understood as a part in the high-voltage power distribution system that is specifically responsible for distributing and transmitting electrical energy for the functional control high-voltage subsystem.

[0037] Specifically, the high-voltage architecture system is divided into two parts according to the function: the driving high-voltage subsystem and the functional control high-voltage subsystem, which are responsible for driving and performing non-driving functions respectively. Correspondingly, the high-voltage power distribution system at least includes a driving power distribution system and a functional power distribution system, wherein the driving power distribution system is included in the driving high-voltage subsystem, and the functional power distribution system is included in the functional control high-voltage subsystem. In the high-voltage architecture system, the driving power distribution system establishes a communication connection with the high-voltage electronic control system of the driving high-voltage subsystem through a communication protocol, and the functional power distribution system establishes a communication connection with the high-voltage electronic control system of the functional control high-voltage subsystem through a communication protocol. In the high-voltage architecture system, the driving high-voltage subsystem and the functional control high-voltage subsystem are interlocked, which increases the driving safety and the safety of functional control, and reduces the energy consumption of the entire high- and low-voltage architecture platform. The interlocking performance may include: when some functions in the functional control high-voltage subsystem require static operation, even if the operation is erroneous, it will not cause driving during the execution of functional control.

[0038] On the basis of the above-mentioned embodiment, the high-voltage architecture system includes: the high-voltage electric control system includes a domain controller corresponding to at least one high-voltage load, and the high-voltage power distribution system is respectively communicatively connected with the domain controller.

[0039] In the embodiment of the present invention, the domain controller refers to an electrical control unit for connecting and disconnecting a high-voltage load. For example, the domain controller may include: an oil pump motor domain controller or a high-pressure water pump motor domain controller.

[0040] Specifically, each domain controller can be connected to a high-voltage load, and the high-voltage electric control system includes at least one domain controller connected to the high-voltage load, wherein the high-voltage power distribution system establishes a communication connection with the domain controller corresponding to each high-voltage load through a communication protocol.

[0041] Based on the above embodiment, the low-voltage architecture system also includes: a low-voltage power distribution system and a low-voltage load. The main control unit is communicatively connected to the low-voltage power distribution system, and the main control unit controls the power on and / or power off of the low-voltage load through the low-voltage power distribution system.

[0042] In an embodiment of the present invention, a low-voltage power distribution system refers to a system for distributing and transmitting electric energy in a low-voltage architecture system. The low-voltage power distribution system distributes electric energy to various low-voltage loads to meet the power demand of the low-voltage loads.

[0043] The low-voltage load refers to a working component that is connected to a low-voltage electronic control system and requires only low-voltage electrical energy to drive. For example, the low-voltage load may include a cooling fan or a turn signal lamp.

[0044] Specifically, in the low-voltage architecture system, in addition to the battery management system and the main control unit, it also includes a low-voltage distribution system and a low-voltage load. The main control unit establishes a communication connection with the low-voltage distribution system through a communication protocol, can send data to the low-voltage distribution system, and can also receive data from the low-voltage distribution system. The main control unit can control the startup and / or shutdown of the low-voltage load through the communication connection.

[0045] The high-voltage architecture system of the embodiment of the present invention includes at least the following high-voltage components: a high-voltage battery, a high-voltage power distribution system, a high-voltage electric control system and a high-voltage load, and the low-voltage architecture system includes at least the following low-voltage components: a battery management system, a main control unit, a low-voltage power distribution system and a low-voltage load. In the high-voltage architecture system, the high-voltage battery is responsible for storing electrical energy, which is distributed and transmitted to the high-voltage load through the high-voltage power distribution system. The high-voltage electric control system is connected to the high-voltage load to control and adjust the working state of the high-voltage load, wherein each high-voltage load can be connected to a domain controller, which is included in the high-voltage power control system. The high-voltage power distribution system and the domain controller corresponding to each high-voltage load are connected through a communication protocol. The battery management system is responsible for monitoring the state of the battery and is connected to the high-voltage electric control system and the high-voltage load. The main control unit, as the core of the high-low voltage architecture, establishes a connection with the high-voltage power distribution system through a communication protocol to realize the exchange of data and information, and coordinates the work of the entire high-low voltage platform architecture according to the received information. The high-voltage power distribution system receives control instructions from the high-voltage power control system through a communication connection. According to the control instructions, the high-voltage power distribution system executes the corresponding high-voltage power-on and power-off processes. The embodiment of the present invention improves the defects of unreasonable power distribution and unclear power distribution scheme by designing a high-low voltage platform architecture, and solves the problem that the high-voltage power scheme in the traditional high-voltage architecture is only controlled by the vehicle's On switch by establishing a communication connection between various components. By establishing a communication connection between the high-voltage architecture system and the low-voltage architecture system, the power on and off of the high-voltage architecture is controlled by the low-voltage communication, thereby improving the safety factor of the platform architecture.

[0046] Optionally, based on the above embodiments, the high and low voltage platform architecture may include three substructures, namely a CAN bus architecture, a high voltage architecture and a low voltage architecture. The CAN bus architecture establishes communication connections with the high voltage architecture and the low voltage architecture through the CAN bus protocol, and the high voltage electrical architecture and the low voltage electrical architecture also establish communication connections through the CAN bus protocol. In the high and low voltage platform architecture, each sub-architecture realizes the interaction and transmission of data of the high and low voltage platform architecture through communication connections.

[0047] Figure 2 The CAN bus architecture is a high-low voltage platform architecture. The CAN bus architecture is divided into three sub-architectures, namely the CAN bus architecture, the upper CAN bus architecture, and the charging CAN bus architecture. Figure 2 As shown, the CAN bus architecture includes at least: Battery Management System (BMS), Electric Power Steering (EPS), Low Power Distribution Unit (LPDU), Voice Prompt Module, Electronic Parking Brake (EPB), Electronic Hydraulic Brake (EHB), Wireless Charging Controller, Ultrasonic Radar Controller, Body Control Module (BCM), Tire Pressure Controller, Microcontroller Unit (MCU), Charging Control Unit (CCU), On Board Diagnostics (OBD), Wireless Charging Receiver, DC Charging, High Power Distribution Unit (LPDU), Air Compressor, Central Body Control The upper CAN bus architecture includes at least: CBCU, CCU, OBD, BCM, oil pump motor controller, high-pressure water pump motor controller, four-in-one brushless motor controller, fan motor controller and upper computing unit; the charging CAN bus architecture includes at least: BMS, on-board charger (On-Board Charger, OBC), OBD, DC charging pile. All components in the three architectures establish communication connections with the CCU through the CAN bus protocol.

[0048] Figure 3 High voltage architecture for high and low voltage platforms, such as Figure 3As shown, the HPDU in the high-voltage architecture is respectively connected to at least one of the following: chassis direct current (DC), motor controller, wireless charging receiver, BMS, DC charging, air compressor and high-voltage electronic control system. The high-voltage electronic control system includes at least one of the following: oil pump motor controller, high-pressure water pump motor controller, mid-mounted (left) motor controller and fan motor controller. The high-voltage electronic control system is connected to the high-voltage load, and the high-voltage load includes at least one of the following: oil pump motor, high-pressure water pump motor, mid-mounted motor, front motor and fan motor.

[0049] Figure 4 For low voltage architecture of high and low voltage platforms, such as Figure 4 As shown, the main control unit of the low-voltage architecture may include: the charging control unit (CCU) in the driving high-voltage subsystem and the central body control unit (CBCU) in the function control high-voltage subsystem. The chassis low-voltage system power distribution and control low-voltage loads connected to the CCU include at least one of the following: CCU high-side switch, ignition switch, self-driving switch, police switch, charger slow charge wake-up, parking release switch, emergency stop switch, BMS wake-up and motor controller wake-up; the cleaning system power distribution and control low-voltage loads connected to the CBCU include at least one of the following: lower water level switch, upper water level switch, water level sensor, box lift reset switch, garbage bin liquid level switch, garbage bin hydraulic pump, oil pump motor controller, water discharge switch, garbage bin door lock switch, garbage bin opening and closing switch, garbage bin lifting switch, water inlet push rod motor, hatch door lock motor, hatch door opening and closing motor, suction port foot motor, suction port lifting motor, telescopic motor and lifting motor. The low-voltage loads of the power distribution system connected to the LPDU include at least one of the following: driving system, lighting system, intelligent driving system, cooling system, tire pressure controller, voice prompt module, fault display screen, emergency stop remote control or ultrasonic radar host, hard disk video recorder or BCM+ remote control receiver. Among them, the driving system may include: EPS, EPB controller, EPB motor, parking release switch, EHB controller or oil level, hydraulic sensor; the lighting system may include: marker lights, headlights, reversing lights, brake lights or turn signals. The low-voltage architecture is connected to the high-voltage architecture through the upper DC / chassis DC and the battery.

[0050] Embodiment 2

[0051] Figure 5 This is a flow chart of a high and low voltage platform architecture control method provided by the second embodiment of the present invention. Based on the above embodiment, the embodiment of the present invention provides a high and low voltage platform architecture control method. Figure 5 As shown, the method includes:

[0052] S110 , in response to a platform wake-up signal, controlling the low-voltage architecture system to power on.

[0053] In an embodiment of the present invention, the wake-up signal can be understood as a start-up instruction, wherein the wake-up signal can include a physical signal or an electronic signal transmitted through a network. For example, the physical signal refers to a signal triggered by the action of a button or a switch, and the electronic signal refers to a CAN network wake-up signal or a real-time clock (RTC) wake-up signal. The function of the wake-up signal is to switch the system from a sleep or standby state to a working state.

[0054] Specifically, when the platform receives a wake-up signal, it will trigger the low-voltage architecture system to power on to start the normal operation of the low-voltage architecture system. If the wake-up signal is valid, the low-voltage architecture system can power on; if the wake-up signal is invalid, the low-voltage architecture system cannot power on.

[0055] S120 , detecting high voltage environment information of the high voltage architecture system according to the battery management system and the main control unit of the low voltage architecture system.

[0056] In the embodiment of the present invention, the high voltage environment information may be understood as a collection of various states and parameters related to high voltage electricity in a high voltage architecture system, wherein the high voltage environment information may include: battery temperature or contactor status.

[0057] Specifically, by integrating the battery management system and the main control unit in the low-voltage architecture system, comprehensive monitoring and detection of high-voltage environmental information in the high-voltage architecture system is achieved. The battery management system and the main control unit monitor and analyze various states and parameters in the high-voltage architecture system to ensure safe and efficient operation of the electrical system.

[0058] S130 , when the high voltage environment information meets a preset power-on condition, controlling the high voltage architecture system to power on the high voltage.

[0059] In the embodiment of the present invention, the preset power-on condition can be understood as the standard that the system needs to meet before the high-voltage architecture system is started. High voltage can be understood as the high-voltage battery supplying power to the high-voltage components of the vehicle after the preset power-on condition is met.

[0060] Specifically, the preset power-on conditions refer to the standards that must be met before starting the high-voltage architecture system. When these conditions are met, it is considered that the high-voltage environment information meets the requirements, and the high-voltage architecture system can safely perform high-voltage operations.

[0061] In the embodiment of the present invention, when the wake-up signal received by the high- and low-voltage platform architecture is valid, the low-voltage architecture system will be awakened to perform a power-on operation. After the power-on operation is completed, the battery management system and the main control unit integrated in the low-voltage architecture system will comprehensively monitor and detect the high-voltage environmental information in the high-voltage architecture system. When the detected high-voltage environmental information meets the preset power-on conditions, the high-voltage architecture system can safely perform high-voltage operations. By monitoring and detecting the high-voltage environmental information in the high-voltage architecture system, the embodiment of the present invention can accurately determine whether the state of the high-voltage system meets the power-on conditions. When the high-voltage environmental information meets the preset power-on conditions, the high-voltage architecture system will perform high-voltage operations, which reduces the risk of high-voltage power supply failures and simplifies the inspection process of the high- and low-voltage platform architecture circuits.

[0062] Embodiment 3

[0063] Figure 6 This is a flow chart of another high and low voltage platform architecture control method provided by Embodiment 3 of the present invention. Based on the above embodiment, this embodiment of the present invention provides another high and low voltage platform architecture control method. Figure 6 As shown, the method includes:

[0064] S210 , in response to a platform wake-up signal, controlling the low-voltage architecture system to power on.

[0065] S220: Trigger the battery management system to perform a system self-check.

[0066] Specifically, after the low-voltage architecture system is successfully powered on, it will further trigger the battery management system to perform self-inspection of various status parameters of the batteries in the system. The battery management system monitors the various status parameters of the batteries in real time through the built-in sensor network, and uses advanced algorithms and models to analyze and process these parameters to identify potential faults or abnormal conditions of the battery management system.

[0067] S230, determining that the battery management system self-test is successful, and detecting, by the main control unit, a contactor closing state of a loop contactor of the high-voltage architecture system corresponding to the high-voltage load as high-voltage environmental information, wherein the loop contactor includes at least a pre-charge contactor and a main contactor.

[0068] In the embodiment of the present invention, the loop contactor can be understood as an electrical component used to connect or disconnect the circuit in the electrical system; the pre-charge contactor is a special type of loop contactor, which is used to pre-charge the high-voltage load when the high-voltage system is powered on again, and can effectively protect the high-voltage load from damage caused by large current shocks; the main contactor is one of the most important loop contactors in the high-voltage architecture system, responsible for controlling the main circuit connection between the high-voltage battery pack and the main high-voltage load. The closing and opening of the main contactor directly determines whether the high-voltage system supplies power to the main load.

[0069] Specifically, after the battery management system completes the system self-check, it will send a signal to the main control unit, and the main control unit will then determine the contactor closure status of all loop contactors, where the loop contactors include at least pre-charging contactors and main contactors, and use the contactor closure status of all loop contactors as the high-voltage environment information of the high-voltage architecture system. If the contactor closure status of all loop contactors is contactor closed, it means that the high-voltage environment information meets the preset power-on conditions. At this time, when the contactor status of all loop contactors is closed, it means that the high-voltage architecture system can perform high-voltage operations.

[0070] S240: Feedback the contactor closing state to the battery management system using the main control unit.

[0071] Specifically, after the battery management system successfully completes the self-test, it will report the successful self-test information to the main control unit. The main control unit will continue to determine the contactor status of all loop contactors. When the contactor status of all loop contactors is closed, the main control unit will send the information that the contactor status is closed to the battery management system.

[0072] S250: When the main control unit determines that the contactor closing state in the high-voltage environment information is a preset closing state configured according to a preset power-on condition, a power-on control instruction is generated.

[0073] In the embodiment of the present invention, the power-on control instruction can be understood as a command for instructing the high-voltage architecture to start up.

[0074] Specifically, when the main control unit monitors the high-voltage environment information and confirms that the contactor state contained in the high-voltage environment information is the preset closed state configured in the preset power-on condition, it will automatically trigger and generate a power-on control instruction, that is, when the main control unit determines that the contactor states of all loop contactors in the high- and low-voltage platform architecture are in the closed state, it will generate a power-on control instruction that can guide the high-voltage architecture system to turn on the high voltage. The loop contactor includes at least a pre-charge contactor and a main contactor. Then, when the loop contactor needs to be closed, the closing order of the pre-charge contactor and the main contactor is to close the pre-charge contactor first, then close the main contactor, and after the high-voltage load is stabilized, disconnect the pre-charge contactor; when the loop contactor needs to be disconnected, the disconnection order of the pre-charge contactor and the main contactor is to disconnect the main contactor first, then disconnect the pre-charge contactor, wherein whether to disconnect the pre-charge contactor can be selected according to system design or safety requirements.

[0075] S260. When receiving a power-on control command, the high-voltage power distribution system controls the high-voltage battery to supply power to the high-voltage load.

[0076] Specifically, the main control unit will generate a power-on control instruction and send it to the high-voltage power distribution system. When the high-voltage power distribution system receives the power-on control instruction, the high-voltage power distribution system will control the high-voltage battery to distribute and transmit the electrical energy required by the high-voltage load according to the power-on control instruction.

[0077] Embodiments of the present invention In the embodiments of the present invention, when the wake-up signal received by the high-low voltage platform architecture is valid, the low-voltage architecture system will be awakened to perform a power-on operation. After the power-on operation is completed, the battery management system will be further triggered to perform a self-check of various status parameters of the battery in the system. After the battery management system completes the system self-check, it will send a signal to the main control unit. The main control unit will then determine the contactor closing state of all loop contactors. The main control unit will generate a power-on control instruction based on the information that the contactor state is closed and send it to the battery management system. The battery management system will then send the power-on control instruction to the high-voltage power distribution system. The high-voltage power distribution system will control the high-voltage battery to distribute and transmit the electrical energy required for the high-voltage load according to the power-on control instruction. The embodiments of the present invention control the high-voltage architecture system to reduce the high voltage through low-voltage communication, so that the power-off process of the high-voltage architecture system is rationalized. When the preset power-on conditions are met, the high-voltage architecture system will perform a high-voltage reduction operation to protect the high-voltage components in the high-voltage architecture system.

[0078] On the basis of the above embodiments, the embodiments of the present invention further include: in response to the high voltage down command, detecting the high voltage usage state of the high voltage architecture system through the main control unit; determining that the high voltage usage state meets the preset power-down condition, and controlling the high voltage architecture system to down-convert the high voltage. Among them, the high voltage usage state includes at least one of the following: the self-driving power supply state is the disconnected state, the cleaning structure working state is the stopped working state, the vehicle driving state is the parking state, the battery fault state is the fault state, and the high voltage electric control system fault is the fault state, etc.

[0079] In an embodiment of the present invention, a high-voltage down instruction may be understood as a control instruction for indicating that the system needs to shut down the current high-voltage state. The high-voltage usage state may be understood to refer to the current working state of the high-voltage architecture system. The preset power-off condition may be understood as the standard that the system needs to meet before the high-voltage architecture system shuts down the current high-voltage state. The preset power-off condition may include: normal preset power-off conditions and abnormal preset power-off conditions. For example, normal preset power-off conditions may include: the self-driving power supply has been disconnected, the cleaning structure has stopped working, or the vehicle is stationary and in a parking state. Abnormal preset power-off conditions may include: a battery level 3 fault or a high-voltage distribution unit level 3 fault, wherein a level 3 fault may indicate that the degree of the fault state is a severe fault state.

[0080] Specifically, after the high and low voltage platform architecture is powered on successfully, when the high and low voltage platform architecture receives a valid high voltage shutdown command, it will control the low voltage architecture system to perform a power-off operation. First, the main control unit will detect the high voltage architecture system's current self-driving power supply status as disconnected, the cleaning structure working status as stopped working, the vehicle driving status as parked, the battery fault status as fault status, and the high voltage electronic control system fault as fault status. Before the high voltage architecture system shuts down the current high voltage state, it is necessary to determine whether the high voltage architecture system's high voltage usage status has reached the standard for shutting down the high voltage state, that is, whether it meets the preset power-off conditions. When it is determined that the high voltage usage status meets the preset power-off conditions, the main control unit will control the high voltage architecture system to perform a high voltage shutdown operation.

[0081] The embodiment of the present invention controls the high voltage architecture system to reduce high voltage through low voltage communication, so that the power-off process of the high voltage architecture system is rationalized. When the preset power-on conditions are met, the high voltage architecture system will perform a high voltage reduction operation to protect the high voltage components in the high voltage architecture system. When the high voltage architecture system encounters a fault during the high voltage reduction process, the high voltage architecture system has rationalized emergency measures and power-off processes.

[0082] Embodiment 4

[0083] The embodiment of the present invention provides another high-low voltage platform architecture control method based on the above embodiment. In order to more clearly show the workflow of the high-low voltage platform architecture control method of the above embodiment, the power-on and power-off processes of the driving high voltage subsystem and the power-on and power-off processes of the function control high voltage subsystem are respectively shown in the embodiment of the present invention.

[0084] like Figure 7 As shown in the figure, the power-on process of the driving high-voltage subsystem is described in detail. When the wake-up signal is valid, that is, after keyon / A+on, the CCU is awakened to power on the low voltage. At this time, the electrical state of the high and low voltage platform architecture is in the normal power state. When the low voltage is powered on successfully, the CCU will wake up the BMS. After the BMS wakes up successfully, it will perform self-detection of battery voltage, current, etc. After the BMS self-check is successful, it will report the information to the main control unit. The CCU continues to judge the state of all the circuit contactors of the high and low voltage platform architecture to determine whether the high voltage conditions are met. If the high voltage conditions are met, then the main control unit sends an The high-voltage instruction is given to BMS. After receiving the high-voltage instruction, BMS sends the HPDU an instruction to close the high-voltage contactor. After the HPDU closes the high-voltage contactor, it feeds back the information of the high-voltage contactor closure to BMS. After BMS receives the information that the high-voltage contactors of the main control unit have been fully closed, it performs the high-voltage operation. After the high voltage is successfully applied, the driving high-voltage subsystem can work normally. At this time, the high-voltage electrical appliances can be enabled according to the logic. If any contactor is not closed or disconnected or any feedback status is lost or failed during this process, the driving high-voltage subsystem fails to apply high voltage, and the high and low voltage platform architecture reports a high-voltage fault.

[0085] like Figure 8 As shown, the power-off process of the high-voltage driving subsystem is described in detail. The high-voltage driving subsystem is powered on successfully as a prerequisite. After the power-off control command is valid, the CCU determines whether the preset power-off conditions are met. If the preset power-off conditions are met, the CCU sends a "contactor disconnection command" to each high-voltage electrical appliance. After each component feedbacks that the contactor is disconnected, the CCU sends a "high-voltage power-off command" to the BMS. After receiving the "high-voltage power-off command", the high-voltage contactor is disconnected. After that, the CCU disconnects the wake-up signal of the high-voltage electronic control system, and the high- and low-voltage platform architecture enters a dormant state, and the high-voltage power-off is completed. If any contactor is not disconnected or any feedback state is lost or fails during this process, the vehicle's high-voltage driving system fails to power off, and the high- and low-voltage platform architecture reports a high-voltage fault.

[0086] like Fig. 9 As shown, the power-on process of the functional control high-voltage subsystem is described in detail. When the CBCU receives the high-voltage power-on instruction, the CBCU will determine whether the high-voltage power-on conditions of the functional control high-voltage subsystem are met. If met, the CBCU sends a contactor closing instruction to the HPDU in the functional control high-voltage subsystem. After the HPDU feedback contactor status is closed, the high-voltage power-on of the functional control high-voltage subsystem is successful, and the high-voltage system uses the electrical appliances according to logic. If any contactor is not closed or any feedback status is lost or failed during this process, the high-voltage power-on of the functional control high-voltage subsystem fails, and the high-low voltage platform architecture reports a high-voltage fault of the functional control high-voltage subsystem.

[0087] like Fig.10 As shown, the power-off process of the functional control high-voltage subsystem is described in detail. The functional control high-voltage subsystem is powered on as a prerequisite. After the CBCU receives the power-off command, the CBCU determines that the power-off conditions are met, and the CBCU sends the contactor disconnection command to each high-voltage component in the functional control high-voltage subsystem. After each installed high-voltage component feedbacks that the contactor is disconnected, the CBCU sends the HPDU "functional control high-voltage subsystem power-off command". After receiving the "power-off command", the HPDU cuts off the contactor in the functional control high-voltage subsystem and feedbacks that the contactor is disconnected. After that, the CBCU disconnects the wake-up signal of the high-voltage electronic control system, and the functional control high-voltage subsystem enters the dormant state. In this process, if any contactor is not disconnected or any feedback state is lost or failed, the functional control high-voltage subsystem fails to power off, and the high-low voltage platform architecture reports a high-voltage fault. If the HPDU determines that the fault list is triggered during the power-on process of the functional control high-voltage subsystem, for example, the high-voltage component contactor adhesion fault, if the power-off command is not sent, the HPDU will actively disconnect the high voltage.

[0088] Embodiment 5

[0089] Embodiments of the present invention provide a computer-readable storage medium and a computer program product for implementing a high- and low-voltage platform architecture control method.

[0090] In some embodiments, the high and low voltage platform architecture control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via a read-only memory (ROM) and / or a communication unit. When the computer program is loaded into a random access memory (RAM) and executed by a processor, one or more steps of the high and low voltage platform architecture control method may be performed. Alternatively, in other embodiments, the processor may be configured as a high and low voltage platform architecture control method by any other appropriate means (e.g., by means of firmware).

[0091] Various implementations of the systems and techniques described above in the embodiments of the present invention may be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays, application specific integrated circuits, application specific standard products, systems on a chip, load programmable logic devices, computer hardware, firmware, software, and / or combinations thereof. These various implementations may include: being implemented in one or more computer programs, which may be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general programmable processor, which may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0092] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0093] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a RAM, a ROM, an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0094] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a cathode ray tube or a liquid crystal display monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including: acoustic input, voice input, or tactile input).

[0095] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area networks, wide area networks, blockchain networks, and the Internet.

[0096] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and virtual private server services.

[0097] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0098] The above specific implementations do not constitute a limitation on the protection scope of the embodiments of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high and low voltage platform architecture, characterized in that: The platform architecture at least includes: a high-voltage architecture system and a low-voltage architecture system; wherein the high-voltage architecture system includes a high-voltage battery, a high-voltage power distribution system, a high-voltage electronic control system and a high-voltage load, and the high-voltage battery is connected to the high-voltage load through the high-voltage power distribution system; the low-voltage architecture system includes a battery management system and a main control unit, and the battery management system is connected to the high-voltage electronic control system and the high-voltage load respectively; The main control unit is communicatively connected to the high-voltage power distribution system, the high-voltage power distribution system is communicatively connected to the high-voltage electric control system, and the high-voltage power distribution system is used to perform high-voltage power on and off control according to control instructions of the high-voltage electric control system.

2. The platform architecture according to claim 1, characterized in that: The high-voltage architecture system includes a driving high-voltage subsystem and a functional control high-voltage subsystem. Accordingly, the high-voltage power distribution system at least includes a driving power distribution system corresponding to the driving high-voltage subsystem and a functional power distribution system corresponding to the functional control high-voltage subsystem. The driving power distribution system is communicatively connected to the high-voltage electronic control system of the driving high-voltage subsystem, and the functional power distribution system is communicatively connected to the high-voltage electronic control system of the functional control high-voltage subsystem.

3. The platform architecture according to claim 1, characterized in that: The high-voltage electric control system includes a domain controller corresponding to at least one of the high-voltage loads, and the high-voltage power distribution systems are communicatively connected to the domain controllers respectively.

4. The platform architecture according to any one of claims 1 to 3, characterized in that: The low-voltage architecture system also includes a low-voltage power distribution system and a low-voltage load. The main control unit is communicatively connected to the low-voltage power distribution system. The main control unit controls power on and / or power off of the low-voltage load through the low-voltage power distribution system.

5. A high and low voltage platform architecture control method, characterized in that: Applied to a high and low voltage platform architecture, the platform architecture at least includes the high and low voltage platform architecture as claimed in any one of claims 1 to 4, and the method includes: In response to a platform wake-up signal, controlling the low-voltage architecture system to power on; Detecting high-voltage environment information of the high-voltage architecture system according to the battery management system and the main control unit of the low-voltage architecture system; When the high-voltage environment information satisfies a preset power-on condition, the high-voltage architecture system is controlled to power on the high voltage.

6. The method according to claim 5, characterized in that: The method of detecting high voltage environment information of the high voltage architecture system according to the battery management system of the low voltage architecture system and the main control unit includes: Triggering the battery management system to perform a system self-check; Determining that the battery management system self-test is successful, detecting, by the main control unit, a contactor closing state of a loop contactor of the high-voltage architecture system corresponding to the high-voltage load as the high-voltage environment information, wherein the loop contactor includes at least a pre-charge contactor and a main contactor; The main control unit is used to feed back the contactor closing state to the battery management system.

7. The method according to claim 5, characterized in that: When the high voltage environment information satisfies a preset power-on condition, controlling the high voltage architecture system to power on high voltage comprises: When the main control unit determines that the contactor closing state in the high-voltage environment information is the preset closing state configured by the preset power-on condition, a power-on control instruction is generated; When the high-voltage power distribution system receives the power-on control instruction, it controls the high-voltage battery to supply power to the high-voltage load.

8. The method according to claim 5, characterized in that: Also includes: In response to a high-voltage instruction, detecting a high-voltage usage state of the high-voltage architecture system through the main control unit; Determine that the high voltage usage status meets a preset power-off condition, and control the high voltage architecture system to power off the high voltage.

9. The method according to claim 8, characterized in that: The high voltage use state meets the preset power-off condition, including at least one of the following: The self-driving power supply status is disconnected; The working state of the cleaning structure is the stop working state; The vehicle driving state is the parking state; The battery fault state is a fault state; The high voltage electronic control system fault is a fault state.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the high- and low-voltage platform architecture control method described in any one of claims 5-9 when executed.

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