A protective monitoring circuit includes a protective circuit to detect at least one of overcharging, overdischarging, and overcurrent of a chargeable secondary battery to control whether to turn on or off a control transistor to protect the secondary battery, and a secondary-battery monitoring circuit, having a reduced size and having a breakdown voltage lower than a battery voltage of the secondary battery, to detect a status of the secondary battery, wherein the protective circuit generates a voltage that is commensurate with an output voltage of the secondary battery and that is within a predetermined tolerance voltage range of the secondary-battery monitoring circuit, and the secondary-battery monitoring circuit generates a detection value responsive to the generated voltage supplied from the protective circuit, the detection value being indicative of the output voltage of the secondary battery.

Claims

5 · 2 independent · depth 3

5 granted claims

›1.independentA protective monitoring circuit, comprising:na protective circuit to detect at least one of overcharging, overdischarging, and overcurrent of a charge…+3

›5.independentA battery pack, comprising:na secondary battery; anda protective monitoring circuit,wherein the protective monitoring circuit includes:a protective ci…

Classifications

5 codes

IPC · International Patent Classification

Section H — Electricity

H02H3/00
H02J7/04

USPC · US Patent Classification

361/86320/134320/137

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Pendency

3.3 y

1,190 days filing → grant

Office actions

none on record

Examiner

Scott Bauer

art unit 2836 · TC 2800

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Citations: 11 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20120300351 A1	29 Nov 2012

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