CAN-bus-based software upgrading method of battery management system
A battery management system, CAN bus technology, applied in the direction of electrical components, transmission systems, bus networks, etc., can solve the problem of low efficiency of the upgrade method, achieve the effects of convenient operation, improved work efficiency, and reduced costs
Inactive Publication Date: 2015-12-23
CHINA AVIATION LITHIUM BATTERY LUOYANG
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] The software upgrade method of the battery management system in the embodiment of the present invention is based on the CAN bus communication protocol, and the software based on the main control management unit, the slave control management unit, and the high-voltage control unit is called the target board software, referred to as the target board; the main control management unit, the slave control unit The CAN bus communication is adopted between the control management unit and the high-voltage control unit, and the CAN bus communication is also adopted between the upper computer and the target board, and the CAN protocol response mechanism is used for data transmission. The CAN bus speed supports 10KBPS~1MBPS. The host computer independently upgrades the master control management unit, slave control management unit, and high-voltage control unit.
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The invention relates to a CAN-bus-based software upgrading method of a battery management system. The method comprises the following steps that: (1), an upper computer selects a to-be-upgraded target board, an upgrading file, and an upgrading way and sends a connecting command to the to-be-upgraded target board; (2), if connection is done successfully, the upper computer reads the upgrading file line by line and grouped CAN dare frames are sent line by line; (3), the upper computer determines whether line ending is done; if so, a line ending data frame is sent to the to-be-upgraded target board; and if not, the upgrading file is sent line by line continuously. The to-be-upgraded target board receives the line ending frame and writes the data at the line into a FLASH; if no line ending frame is received, the upgrading file is received line by line continuously; and (4), the upper computer determines whether the upgrading file sending is completed; if so, the upgrading process is completed; and if not, the upgrading file is sent line by line continuously. With the method, upgrading can be carried out under the circumstances that the box does not need to be dismounted, so that the working efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of battery management systems, and in particular relates to a CAN bus-based battery management system software upgrading method. Background technique [0002] The battery systems of electric vehicles or other battery energy storage systems require more batteries, usually consisting of many battery modules, each of which is equipped with a separate slave control management unit, which is responsible for Data acquisition of the battery module and communication with the main control management unit. The main control management unit, the slave control management unit, the high voltage control unit and the corresponding wiring harness constitute the battery management system. [0003] Among them, the main control management unit is used to realize battery data management, SOC / SOH estimation, abnormal management, charge and discharge control strategy implementation and address management, etc.; the slave control ...
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IPC IPC(8): H04L12/40H04L29/08
Inventor 田云芳谢秋薄丽丽王蕾王栋梁
Owner CHINA AVIATION LITHIUM BATTERY LUOYANG