Title:
APPARATUS AND METHOD FOR DETECTING INTERNAL MICRO SHORT CIRCUIT OF BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/051449
Kind Code:
A1
Abstract:
An apparatus for detecting an internal micro short circuit of a battery. A battery is continuously monitored during a formation and charging process of the battery, and a signal of a quickly changing voltage is filtered out by using a differentiation circuit. The direct-current voltage of a battery is isolated according to the characteristics of the differentiation circuit, and furthermore, a separated signal of a slightly changing voltage is sent to an amplifier for amplification, such that the requirement for a high-precision meter is lowered; and amplified signals are collected by using a high-speed AD converter, a captured voltage change signal is transmitted to a computer by means of a single-chip microcomputer, and finally, a product in which an internal micro short circuit occurs is determined. Moreover, positive amplification and negative amplification can both be used, and secondary amplification is carried out, such that a subtle voltage or current change of the battery is detected more effectively and accurately, thereby detecting a faulty battery, or observing the status of a battery at any time to estimate the service life of the battery.
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Inventors:
TANG YUANAN (CN)
LIAO WENCHANG (CN)
LIAO WENCHANG (CN)
Application Number:
PCT/CN2019/108829
Publication Date:
March 25, 2021
Filing Date:
September 29, 2019
Export Citation:
Assignee:
SHENZHEN ZHONGNENGDA AUTOMATION EQUIPMENT CO LTD (CN)
International Classes:
G01R31/389; G01R31/367
Foreign References:
| CN104730438A | 2015-06-24 | |||
| CN207198307U | 2018-04-06 | |||
| CN207181636U | 2018-04-03 | |||
| JP2011141258A | 2011-07-21 |
Attorney, Agent or Firm:
SHENZHEN ZYTB IP AGENCY FIRM (GENERAL PARTNERSHIP) (CN)
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