Title:
PROTECTION CIRCUIT FOR IN-VEHICLE BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/163736
Kind Code:
A1
Abstract:
Provided is a protection circuit for an in-vehicle battery, said protection circuit being capable of detecting an internal short-circuit that occurs in the in-vehicle battery, and performing protection operations in the cases where the internal short-circuit occurred. A protection circuit (10) for an in-vehicle battery (2) has: a detection unit (41) capable of detecting at least the temperature of the in-vehicle battery (2); and a control unit (42) capable of controlling a first relay (15) and a second relay (33). In the cases where the first relay (15) is in the on-state, and the second relay (33) is in the off-state, the control unit (42) performs a first switch control when the temperature or an output current of the in-vehicle battery (2) is within a first abnormal range, said temperature or output current having been detected by the detection unit (41), and performs a second switch control in the cases where the temperature of the in-vehicle battery (2), said temperature having been detected by the detection unit (41) after the first switch control, is within the first abnormal range or a second abnormal range.
Inventors:
SATO SHINICHIRO (JP)
Application Number:
PCT/JP2018/005117
Publication Date:
September 13, 2018
Filing Date:
February 14, 2018
Export Citation:
Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H02J7/00; H01M50/569; H02H7/18
Domestic Patent References:
| WO2015172947A1 | 2015-11-19 |
Foreign References:
| JP2008243708A | 2008-10-09 | |||
| JP2014505335A | 2014-02-27 | |||
| DE102012213053A1 | 2014-01-30 |
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (JP)
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