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Patent Searching and Data


Title:
VOLTAGE DETECTING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/044856
Kind Code:
A1
Abstract:
Provided is a voltage detecting circuit that measures a plurality of cell voltages of a battery pack configured by connecting a plurality of cells in series. The voltage detecting circuit is provided with: a plurality of input terminals respectively connected to the electrodes of the plurality of cells via a plurality of voltage detecting lines; a multiplexer for periodically selecting the voltages of a plurality of cells in a group constituted by the plurality of cells connected in series, and outputting the resulting voltage; an AD converter for performing AD conversion on the output voltage from the multiplexer to output digital data of the output voltage; and a control circuit for controlling selection timing for the multiplexer and timing of the AD conversion. The control circuit switches time intervals at which the multiplexer selects each cell to change the period of the AD conversion.

Inventors:
HATANI NAOHISA
GOTO YOSUKE
INUKAI FUMIHITO
MORI GOROU
Application Number:
PCT/JP2018/031832
Publication Date:
March 07, 2019
Filing Date:
August 28, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
PANASONIC ASIA PACIFIC PTE LTD (SG)
International Classes:
G01R19/00; G01R31/36; H01M10/44; H01M10/48; H02J7/02
Foreign References:
JP2012079618A2012-04-19
JP2016082849A2016-05-16
JP2011185915A2011-09-22
JP2017049229A2017-03-09
JP2015203593A2015-11-16
JP2006053120A2006-02-23
US20140239966A12014-08-28
US20160187427A12016-06-30
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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