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A state synchronization and tracking method for a distributed battery management system

A battery management system and state synchronization technology, which is applied in the direction of measuring electricity, electric vehicles, electric traction, etc., can solve problems such as safety problems and many system nodes, and achieve the effect of easy management

Active Publication Date: 2016-06-15
HUIZHOU EPOWER ELECTRONICS
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AI Technical Summary

Problems solved by technology

Considering the safety of the car, the operation of the battery management system must be very reliable, especially the distributed battery management system, the system has many nodes, and the status of each node must be able to synchronize. The status of each node is not synchronized, which may lead to serious safety problems

Method used

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Embodiment Construction

[0018] In order to allow those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below.

[0019] The invention discloses a state synchronization and tracking method of a distributed battery management system.

[0020] When the system is powered on (i.e. IG_ON=1), the main control unit BCU, each slave control unit BMU and the high-voltage detection unit HMU enter the initialization state. After the initialization is completed, check whether there is a fault at present, and if so, jump to the fault handling step, otherwise enter the running step and maintain the normal running state.

[0021] When the initialization is completed and no fault is detected, each node enters the running state, executes the running steps, and monitors in real time whether there is a power-off action of the main control unit BCU, a request for updating the program, a diagnosis request, and a fault occurs, and perfo...

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PUM

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Abstract

The invention discloses a state synchronizing and tracking method of a distributed battery management system. The method includes the following steps, set in nodes, of initializing and judging whether faults exist or not; running, monitoring state changes in real time and performing corresponding state changing according to detection results; powering down, storing data and stopping sending periodical data except for broadcast data; diagnosing, stopping sending the periodical data except for the broadcast data and performing related diagnosis operation; stopping, in case of a program updating request, entering the stopping state and performing grogram updating; performing fault processing, and if faults are detected, entering the fault state. By the method, states of all the nodes in the distributed battery management system are ensured to the synchronized, and safety problem due to state asynchronism is avoided; running states of the distributed battery management system can be effectively monitored, and management of the whole system is facilitated.

Description

technical field [0001] The invention relates to a state synchronization and tracking method of a distributed battery management system. Background technique [0002] Batteries are complex electrochemical systems. In use, we must pay attention to the various characteristics of each single battery, battery temperature, remaining battery power and total current and other parameters, because these parameters directly affect the service life of the battery, and it is necessary to optimize the operation and effectively monitor to prevent the battery from appearing. Problems such as overcharging, over-discharging, and over-temperature are eliminated, thereby prolonging the service life of the battery and reducing costs, especially improving the reliability of the battery. During the operation of electric vehicles, if the aging battery is not detected in time and adjusted, the capacity of the battery pack will be reduced and the life will be shortened, which will affect the efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18G01R31/36
CPCY02T10/70
Inventor 刘飞文锋阮旭松张维戈阮廷军
Owner HUIZHOU EPOWER ELECTRONICS
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