New energy bus battery high-voltage cut-off remote control system and method

Abstract

The invention discloses a new energy bus battery high-voltage cut-off remote control system and method. The system comprises a monitoring module, a fault analysis module and a high-voltage cut-off control module. Wherein the monitoring module is used for monitoring the running state of a vehicle and the running state of a battery; the fault analysis module is used for calculating fault grade collision according to the vehicle running state and the battery running state and setting a matched high-voltage cut-off mode; and the high-voltage cut-off control module is used for remotely controlling high-voltage cut-off of the new energy bus battery. Real-time data and state information of a target vehicle are obtained by monitoring the running state of the vehicle and the running state of a battery in real time, real-time analysis and decision making are facilitated, the current fault level of the vehicle is accurately judged according to the preset fault level and the corresponding high-voltage cut-off mode, high voltage is accurately and rapidly cut off, safety of the vehicle and personnel on the vehicle is protected, and safety of the vehicle is improved. And powerful technical support is provided for safe operation of the new energy bus.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle battery remote control, and in particular relates to a new energy bus battery high voltage cut-off remote control system and method. Background Art

[0002] As an important part of modern urban public transportation, new energy buses have been widely used and promoted around the world. In recent years, especially in China, the development of new energy buses has made remarkable achievements. With the technological upgrading and replacement of new energy vehicles under the strong support of the country, the products are more advanced and intelligent. New energy buses are also unique in the market, reflecting the advantages of energy saving, environmental protection and intelligent management and control. During the operation of electric buses, the operating status of the vehicle and battery should be monitored in real time. When an emergency fault occurs, the high voltage should be disconnected in time to protect the safety of the vehicle and personnel. The existing electric vehicle disconnection method mainly relies on the user's manual operation to achieve high voltage disconnection. The disconnection method is relatively simple and cannot flexibly respond to the disconnection requirements of the high voltage circuit under complex vehicle operation conditions. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing electric vehicle cutting-off method mainly relies on manual operation by the user to achieve high-voltage cutting-off. The cutting-off method is relatively simple and cannot flexibly cope with the cutting-off demand of the high-voltage circuit under complex vehicle operation conditions.

[0004] The technical solution of the present invention is to provide a new energy bus battery high voltage cut-off remote control system, including a monitoring module, a fault analysis module and a high voltage cut-off control module;

[0005] Monitoring module: monitors vehicle operating status and battery operating status;

[0006] Fault analysis module: calculates the fault level collision according to the vehicle operating status and battery operating status and sets up a matching high-voltage cut-off mode;

[0007] High-voltage cut-off control module: remote control to implement high-voltage cut-off of new energy bus batteries.

[0008] Furthermore, the monitoring module collects vehicle operating status and battery operating status information through a controller area network bus installed on the new energy bus. The vehicle operating status information includes the vehicle's license plate, vehicle number, speed, motor speed, and location information; the battery operating status information includes battery type, voltage, current, storage capacity, and battery temperature.

[0009] Furthermore, the fault levels in the fault analysis module include emergency fault, collision fault, conventional fault and normal state, and the corresponding high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, conventional fault cut-off mode and normal cut-off mode.

[0010] Furthermore, the high-voltage cut-off control module includes an intelligent fuse and a vehicle controller, and the intelligent fuse and the vehicle controller are electrically connected.

[0011] Furthermore, the intelligent fuse includes an active fuse, a relay and a passive fuse.

[0012] A remote control method for cutting off high voltage of a new energy bus battery, comprising:

[0013] Step 1: Collect vehicle operation status and battery operation status information through the controller area network bus set on the new energy bus. The vehicle operation status information includes the vehicle license plate, vehicle number, speed, motor speed, and location information; the battery operation status information includes battery type, voltage, current, storage capacity, and battery temperature;

[0014] Step 2: Set the fault level, including emergency fault, collision fault, normal fault and normal state. The supporting high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, normal fault cut-off mode and normal cut-off mode;

[0015] Step 3: Remotely control the high voltage cutoff of the battery according to the high voltage cutoff mode corresponding to the vehicle fault level in step 2.

[0016] Beneficial effects of the present invention: The present invention obtains real-time data and status information of the target vehicle by real-time monitoring of the vehicle operating status and the battery operating status, which is conducive to real-time analysis and decision-making, and accurately judges the current fault level of the vehicle according to the preset fault level and the corresponding high-voltage cut-off mode. The intelligent fuse and the vehicle controller are used in different situations to accurately and quickly cut off the high voltage in different ways, thereby protecting the safety of the vehicle and the people on board, and providing strong technical support for the safe operation of new energy buses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a system architecture diagram of the present invention; DETAILED DESCRIPTION

[0018] A new energy bus battery high voltage cut-off remote control system, comprising a monitoring module, a fault analysis module and a high voltage cut-off control module;

[0019] Monitoring module: monitors vehicle operating status and battery operating status;

[0020] Fault analysis module: calculates the fault level collision according to the vehicle operating status and battery operating status and sets up a matching high-voltage cut-off mode;

[0021] High-voltage cut-off control module: remote control to implement high-voltage cut-off of new energy bus batteries.

[0022] Furthermore, the monitoring module collects vehicle operating status and battery operating status information through a controller area network bus installed on the new energy bus. The vehicle operating status information includes the vehicle's license plate, vehicle number, speed, motor speed, and location information; the battery operating status information includes battery type, voltage, current, storage capacity, and battery temperature.

[0023] Furthermore, the fault levels in the fault analysis module include emergency fault, collision fault, conventional fault and normal state, and the corresponding high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, conventional fault cut-off mode and normal cut-off mode.

[0024] Furthermore, the high-voltage cut-off control module includes an intelligent fuse and a vehicle controller, and the intelligent fuse and the vehicle controller are electrically connected.

[0025] Furthermore, the intelligent fuse includes an active fuse, a relay and a passive fuse.

[0026] A remote control method for cutting off high voltage of new energy bus battery:

[0027] Step 1: The monitoring module collects vehicle operating status and battery operating status information through the controller local area network bus installed on the new energy bus. The vehicle operating status information includes the vehicle license plate, vehicle number, speed, motor speed, and location information; the battery operating status information includes battery type, voltage, current, storage capacity, and battery temperature.

[0028] Step 2: Set the fault level in the fault analysis module, including emergency fault, collision fault, conventional fault and normal state. The supporting high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, conventional fault cut-off mode and normal cut-off mode.

[0029] The method for setting the fault level is to collect historical vehicle operating status and battery operating status information data, quantify the vehicle operating status information and the battery operating status information, set the fault coefficient to level one to four, and classify the fault type according to the fault coefficient.

[0030] Level 1 fault: indicates that the power battery has lost its function in this state, and other controllers are requested to stop charging or discharging immediately within 1 second. At this time, the fault level is an emergency fault, and the corresponding high-voltage cut-off mode is the emergency stop cut-off mode.

[0031] Level 2 fault: indicates that the power battery has lost its function in this state, and requests other controllers to stop charging or discharging. At this time, the fault level is a collision fault, and the corresponding high-voltage cut-off mode is the collision cut-off mode.

[0032] Level 3 fault: indicates that the performance of the power battery has declined and the battery management system has reduced the maximum allowable charge and discharge current. At this time, the fault level is a conventional fault and the corresponding high-voltage cut-off mode is a conventional fault cut-off mode.

[0033] Level 4 fault: indicates that the power battery functions well in this state, the fault level is normal, and the matching high-voltage cut-off mode is normal cut-off mode;

[0034] When the vehicle is running, the vehicle operating status and battery operating status data are collected in real time, the current vehicle fault coefficient is calculated, and mapped and matched with the fault coefficient set by the system to determine the current vehicle battery status.

[0035] Step 3: The high-voltage cut-off control module remotely controls the high-voltage cut-off mode of the new energy bus battery according to the vehicle fault level in step 2 to cut off the high voltage of the battery.

[0036] The high-voltage cut-off control module includes an intelligent fuse and a vehicle controller, and the intelligent fuse and the vehicle controller are electrically connected. The intelligent fuse includes an active fuse, a relay and a passive fuse. The active fuse, the relay and the passive fuse are combined to set a matching high-voltage cut-off mode, and controlled by the vehicle controller.

[0037] When the power is turned on and the vehicle starts working, the vehicle controller starts to execute initialization and read the EEPROM information about the vehicle lock command. EEPROM, the full name of which is Electrically Erasable Programmable Read-Only Memory, is a storage technology that allows users to erase and program multiple times while the device is running. The characteristic of this memory is that it can still retain data after power failure. At the same time, the vehicle controller will receive the cut-off message command sent by the high-voltage cut-off control module in real time.

[0038] Control strategies and processes

[0039] After the vehicle is powered on, the vehicle controller starts to initialize and read the EEPROM information about the vehicle lock command, and receives the message command sent by the high-voltage cut-off control module in real time. After the vehicle is powered on, the high-voltage cut-off control module command begins to execute. The vehicle controller controls the intelligent fuse to adjust the vehicle operation status in different modes. If the terminal command times out, the vehicle executes the last command saved in the EEPROM.

[0040] The terminal sends a command to the vehicle controller

[0041] ID: ID = 0x0C3CA7A3

[0042]

[0043] Vehicle controller feedback terminal data

[0044] ID:0x0C3CA3A7

[0045]

[0046]

Claims

1. A remote control system for high voltage cut-off of new energy bus batteries, characterized in that: It includes a monitoring module, a fault analysis module and a high-voltage cut-off control module; Monitoring module: monitors vehicle operating status and battery operating status; Fault analysis module: calculates the fault level collision according to the vehicle operating status and battery operating status and sets up a matching high-voltage cut-off mode; High voltage cut-off control module: remotely control the high voltage cut-off of new energy bus batteries.

2. A new energy bus battery high voltage cut-off remote control system according to claim 1, characterized in that: The monitoring module collects vehicle operating status and battery operating status information through the controller local area network bus set on the new energy bus. The vehicle operating status information includes the vehicle license plate, vehicle number, speed, motor speed, and location information; the battery operating status information includes battery type, voltage, current, storage capacity, and battery temperature.

3. A new energy bus battery high voltage cut-off remote control system according to claim 1, characterized in that: The fault levels in the fault analysis module include emergency fault, collision fault, conventional fault and normal state, and the matching high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, conventional fault cut-off mode and normal cut-off mode.

4. A new energy bus battery high voltage cut-off remote control system according to claim 1, characterized in that: The high-voltage cut-off control module includes an intelligent fuse and a vehicle controller, and the intelligent fuse is electrically connected to the vehicle controller.

5. A new energy bus battery high voltage cut-off remote control system according to claim 4, characterized in that: The intelligent fuse includes an active fuse, a relay and a passive fuse.

6. A remote control method for cutting off high voltage of a new energy bus battery, characterized in that: include Step 1: Collect vehicle operation status and battery operation status information through the controller area network bus set on the new energy bus. The vehicle operation status information includes the vehicle license plate, vehicle number, speed, motor speed, and location information; the battery operation status information includes battery type, voltage, current, storage capacity, and battery temperature; Step 2: Set the fault level, including emergency fault, collision fault, normal fault and normal state. The supporting high-voltage cut-off modes include emergency stop cut-off mode, collision cut-off mode, normal fault cut-off mode and normal cut-off mode; Step 3: Remotely control the high voltage cutoff of the battery according to the high voltage cutoff mode corresponding to the vehicle fault level in step 2.

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