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Battery management system based on dynamic SOC estimation system

A battery management system and dynamic technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as large amount of calculation, little practice, and complicated methods, and achieve the effect of strong correction.

Inactive Publication Date: 2014-12-24
安徽启光能源科技研究院有限公司
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Problems solved by technology

Due to the complexity of the method, the calculation of internal resistance is basically offline, and the amount of calculation is large, so it is rarely used in practice

Method used

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  • Battery management system based on dynamic SOC estimation system
  • Battery management system based on dynamic SOC estimation system

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Embodiment Construction

[0008] Below, referring to the accompanying drawings, through the description of the embodiments, the specific implementation of the present invention, such as the control system involved, the mutual connection relationship, and the implementation method, are further described in detail, so as to help those skilled in the art understand the present invention Have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions.

[0009] The battery management system refers to the ability to monitor the parameter information of the power battery in real time, estimate the state of charge (SOC) of the battery, effectively manage and allocate the capacity of the battery pack, and have complete fault detection, alarm, data processing and transmission A complete system with other functions. The battery management system should have the following functions: detection of external parameters of the battery pack, judgment of battery status and esti...

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Abstract

The invention relates to a battery management system based on a dynamic SOC estimation system. The system comprises a master control unit, a slave control unit and an upper computer, wherein the master control unit, the slave control unit and the upper computer are communicated through CAN buses, and the master control unit comprises a battery detection system, the SOC estimation system and a battery equilibrium strategy and control system. The SOC estimation system performs SOC estimation according to parameters of batteries in a battery pack, acquired by a current sensor and a voltage sensor. The dynamic SOC estimation is achieved by means of a dynamic SOC estimation method based on a model, an estimation result shows that the dynamic SOC estimation method has good inhibiting effect on noise of the system model and measurement noise, has good correction effect on an initial valve error of the system model and meanwhile has certain robustness on an identification result of a model parameter.

Description

technical field [0001] The invention relates to the technical field of electric power safety, in particular to a battery management system based on a dynamic SOC estimation system. Background technique [0002] The battery management system should have the following functions: detection of external parameters of the battery pack, judgment of battery status and estimation of remaining power, charge and discharge control of the battery pack, battery power balance management, battery pack thermal management, and communication with external devices Wait. At present, the detection technology of the external parameters of the battery has become mature. Now the focus of the research on the lithium-ion battery management system is the estimation of the remaining power of the battery and the balanced management of the battery pack. SOC refers to the ratio of the remaining power to the total capacity of the battery. The state of charge when the battery is charged to the point where i...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 蔡旭姜广宇王琦王海松
Owner 安徽启光能源科技研究院有限公司
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