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Battery matching method

A technology for battery and battery formation, used in battery assembly machines, secondary battery manufacturing, sustainable manufacturing/processing, etc.

Active Publication Date: 2019-02-19
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to the different battery packs, it will also bring great safety risks to the battery pack as a whole.

Method used

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Embodiment Construction

[0020] The technical problems solved by the embodiments of the present invention, the technical solutions adopted and the technical effects achieved are clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other equivalent or obviously modified embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the invention can be embodied in many different ways as defined and covered by the claims.

[0021] Specifically, such as figure 1 As shown, a battery assembly method of the present invention includes: step S100 to step S160.

[0022] Step S100: Obtain the time-series curve of the battery formation voltage of the sample battery. This process is automatically rec...

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Abstract

The invention relates to the technical field of generalities of batteries, and particularly discloses a battery matching method. The method specifically comprises the following steps: acquiring a timeseries curve of a battery voltage of sample battery formation; completing a missing value of the time series curve by using a KNN (K-Nearest Neighbor) algorithm; eliminating interference informationin a process of obtaining the time series curve by adopting a wavelet noise elimination method; aligning a time series of a time series curve to be compared by adopting a dynamic time wrapping method;performing primary screening on a sample battery by adopting voltage and capacitance standards; clustering the sample battery according to a static final voltage of the sample battery formation and acapacitance measured by discharging by adopting a Gaussian mixed model; and matching the clustered sample battery according to a characteristic distribution density of the sample battery. The Gaussian mixture model is used to cluster the sample battery, and then the clustered sample battery is matched according to the characteristic distribution density of the sample battery, so that a battery pack is higher in consistency due to the adoption of the voltage and capacitance dual process data.

Description

technical field [0001] The invention relates to the general technical field of batteries, in particular to a battery assembly method. Background technique [0002] With the rapid development of new energy vehicles, the production and sales of power lithium-ion batteries have increased significantly. However, in the application of batteries, a mature matching scheme must be in place to improve the consistency of each battery in the power battery system and improve the reliability of the power battery system. reliability. In addition, the country gradually promotes the cascade utilization of power batteries through legislation, and large-scale recycling in the future will also require the support of battery pack technology. Power batteries have been widely used in new energy vehicles, wind and solar energy storage, telecommunication base station reserve power, electric tools and electric motorcycles, etc., and are usually combined in series and parallel with multiple batterie...

Claims

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Application Information

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IPC IPC(8): H01M10/04B07C5/344
CPCB07C5/344H01M10/0404Y02P70/50
Inventor 王学雷满春涛王连旌白熹微刘承宝
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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