Data shrinkage storage and reconstruction method for battery management system

A battery management system and data technology, which is applied in the direction of registration/instruction of vehicle operation, registration/instruction, instruments, etc., can solve the problem of limited storage space of the battery management system, achieve the effect of ensuring accuracy and improving data storage time

Active Publication Date: 2021-01-15
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of limited storage space of the battery management system, and proposes a method for shrinking storage and reconstruction of battery management system data, which can effectively improve the data storage time of the electric vehicle BMS

Method used

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  • Data shrinkage storage and reconstruction method for battery management system
  • Data shrinkage storage and reconstruction method for battery management system
  • Data shrinkage storage and reconstruction method for battery management system

Examples

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Embodiment Construction

[0019] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] Such as figure 2 The flow chart of the shrinkage storage and reconstruction method of the recorder of the shown embodiment,

[0021] S1, keep the original total voltage U t and the recording frequency of the total current I remain unchanged, such as a recording frequency of 2 Hz.

[0022] In the embodiment of the present invention, the BMS recorder still records the total voltage and total current according to the frequency of 2Hz, such as image 3 The schematic diagram of each signal data recording of the battery management system is shown, image 3 The changes in a range of high-frequency signals recorded at 2Hz frequency are given in . u t Indica...

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Abstract

The invention relates to a reduction storage and reconstruction method of data of a battery management system. The method includes: maintaining original recording frequency of total voltage Ut and total current I unchanged, and still recording the total voltage and the total current by a recorder according to the original frequency; collecting voltage of single batteries at low frequency or by lowering data recording frequency of the data recorder to enable the battery management system to record battery data for a longer time in limited storage space; reconstructing low-frequency battery signals without distortion into signals recorded at high frequency through a frequency division model (M+D model). Through the method, time for storing the battery data by the recorder of the battery management system can be increased effectively, and battery data storage time period and battery data accuracy can be guaranteed without increasing storage space.

Description

technical field [0001] The invention relates to a battery management technology for an electric vehicle, in particular to a method for shrinking storage and reconstruction of battery management system data. Background technique [0002] Energy shortage and environmental pollution are two major global crises at present. People's demand for clean energy continues to grow. With the development of new energy industry, energy storage technology has gradually become the focus and hot spot of energy, electric power, and transportation departments around the world. . Lithium-ion batteries have the advantages of high energy density, no pollution, long life, and stable performance, and have been widely used in the field of energy storage. For some applications that require less energy, lithium-ion single batteries have met a part of life. Demand, such as portable electronic products, mobile phones, etc. However, in many application fields that require a large amount of energy, such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C5/08
CPCG07C5/0841
Inventor 周龙郑岳久
Owner UNIV OF SHANGHAI FOR SCI & TECH
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