PROTECTION CIRCUIT, BATTERY CONTROL DEVICE, AND BATTERY PACK

Title:

PROTECTION CIRCUIT, BATTERY CONTROL DEVICE, AND BATTERY PACK

Document Type and Number:

WIPO Patent Application WO/2011/102067

Kind Code:

A1

Abstract:

Disclosed is a protection circuit which can cut off a battery charge/discharge path and can prevent damage to a heating element across a wide range of battery voltage fluctuation. The circuit is provided with: fuses (31a, 31b) which are connected in series in a charge/discharge current path between a battery (10) and a charge/discharge control circuit (20), and a heating unit (32) wherein resistors (32a, 32b) are connected in series. The two ends of the resistors (32a, 32b) that are not connected to the other resistor are connected to the current path of the fuses (31a, 31b), and each of the other ends of the resistors (32a, 32b), those which are not connected to the fuses, have terminals (33a, 33b) formed thereon, the terminals being selected according to the fluctuation band of the voltage value of the battery (10), and connected to a current control element (50) which controls the current applied to the heating unit (32).

Inventors:

MUKAI KOICHI (JP)
ISHIMARU MASAHIKO (JP)
ASADA TAKAHIRO (JP)
KOMORI CHISATO (JP)
YONEDA YOSHIHIRO (JP)
KIMURA YUUJI (JP)
NAGAKI SHOKO (JP)

Application Number:

PCT/JP2010/073839

Publication Date:

August 25, 2011

Filing Date:

December 29, 2010

Export Citation:

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Assignee:

SONY CHEM & INF DEVICE CORP (JP)
MUKAI KOICHI (JP)
ISHIMARU MASAHIKO (JP)
ASADA TAKAHIRO (JP)
KOMORI CHISATO (JP)
YONEDA YOSHIHIRO (JP)
KIMURA YUUJI (JP)
NAGAKI SHOKO (JP)

International Classes:

H02H7/18; H01M2/10; H01M10/44; H01M10/48; H02H3/08; H02J7/00

Foreign References:

JP2007123129A	2007-05-17
JP2000340267A	2000-12-08
JP2007207940A	2007-08-16
JP2010034436A	2010-02-12
JP2007135359A	2007-05-31

Other References: