Title:
BATTERY PACK, METHOD FOR DETECTING ABNORMALITY IN BATTERY PACK, METHOD FOR CONTROLLING CHARGING OF BATTERY PACK, AND CHARGING CONTROL PROGRAMMING FOR BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2018/230115
Kind Code:
A1
Abstract:
The purpose of the present invention is, with a battery in a charged state, to prevent an unstable state by which the battery is repeatedly in an overcharged state, and to improve stability. A battery pack comprises one or more of a rechargeable battery (1), an output switch (2) that is serially connected to the output side of the battery (1), a control circuit (3) that detects the voltage of the battery (1) and controls the output switch (2) so as to turn on and off, a fuse (5) that is serially connected to the battery (1) and is fused when there is an abnormality in the battery (1), and an abnormality detection circuit (4) that detects an abnormal state of the battery (1) and fuses the fuse (5). In the battery pack, upon detecting an overcharge state in which the voltage of the battery (1) has risen to a first overcharge detection voltage (Vp1), the control circuit (3) controls the output switch (2) so as to turn off to stop charging, and when the voltage of the battery (1) drops to a charge restart voltage (Va), the control circuit (3) controls the output switch (2) so as to turn on to restart charging. Furthermore, in a state in which the overcharge state of the battery (1) has been detected over a plurality of times, the abnormality detection circuit (4) outputs a fusion signal to the fuse (5) and fuses the fuse (5).
Inventors:
YAMAMOTO RYOSUKE
MATSUDA NAOTO
TSUTSUI AKIO
TERAOKA HIROKI
MATSUDA NAOTO
TSUTSUI AKIO
TERAOKA HIROKI
Application Number:
PCT/JP2018/014674
Publication Date:
December 20, 2018
Filing Date:
April 06, 2018
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H02J7/00; H01M10/42; H01M10/48; H02H7/18
Foreign References:
| JPH10136576A | 1998-05-22 | |||
| JPH07105983A | 1995-04-21 | |||
| JP2007325324A | 2007-12-13 | |||
| JP2001126772A | 2001-05-11 | |||
| JP2004127532A | 2004-04-22 | |||
| JP2002025628A | 2002-01-25 |
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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