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Title:
STATE ESTIMATION METHOD FOR POWER BATTERY FORMATION PROCESS BASED ON CONVEX SPATIAL FILTERING
Document Type and Number:
WIPO Patent Application WO/2023/005064
Kind Code:
A1
Abstract:
A state estimation method for a power battery formation process based on convex spatial filtering which, by means of using a filtering method to estimate the state of a time-delay system, sets forth an iterative replacement method to convert a state quantity at a time k to a state quantity at a time k-h as well as subsequent state quantities, thereby merging time-delay terms, avoiding the problem of dimensionality increasing when a state matrix A and a state matrix Ah of the time-delay state quantity are subsequently merged into a new state matrix, reducing computational complexity and computation time of subsequent computations. Furthermore, due to the cancellation of identical terms in the iterative replacement, estimation accuracy is increased to a certain extent. The present method uses two updates when acquiring an update step, such that the obtained convex space volume package is more compact, thereby increasing state estimation accuracy for the battery formation process.

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Inventors:
WANG ZIYUN (CN)
WANG YAN (CN)
LI NANJIANG (CN)
JI ZHICHENG (CN)
ZHAN YACONG (CN)
CHEN YUQIAN (CN)
ZHANG ZIMENG (CN)
CHEN LIN (CN)
SHI WEIJIE (CN)
YU YINQUAN (CN)
HUO LEITING (CN)
Application Number:
PCT/CN2021/130844
Publication Date:
February 02, 2023
Filing Date:
November 16, 2021
Export Citation:
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Assignee:
UNIV JIANGNAN (CN)
International Classes:
G01R31/382; G01R31/3842; G06F30/20; H01M10/44
Foreign References:
CN113589179A2021-11-02
CN102680898A2012-09-19
CN105629175A2016-06-01
CN109932598A2019-06-25
CN106154075A2016-11-23
CN110855149A2020-02-28
CN112217226A2021-01-12
CN108614221A2018-10-02
Attorney, Agent or Firm:
HARBIN SHINEIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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