Title:
VEHICLE POWER SUPPLY SYSTEM
Document Type and Number:
Japanese Patent JP2019146460
Kind Code:
A
Abstract:
To provide a vehicle power supply system capable of accurately calculating an internal resistance value and an open voltage value of a battery.SOLUTION: A vehicle power supply system comprising a chargeable/dischargeable battery comprises: a control unit for performing charging/discharging control on the battery according to a current pattern in which switching of charging/discharging is performed at a short cycle and current having a fixed value is kept for a predetermined time in each of periods at the time of charging and the time of discharging; a measurement unit for measuring a plurality of sets of a current value and voltage value of the battery in a period in which the current having the fixed value is kept for the predetermined time; and a calculation unit for calculating an internal resistance value and a voltage value at the time of no current of the battery on the basis of a plurality of sets of the voltage value and current value measured by the measurement unit.SELECTED DRAWING: Figure 1
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Inventors:
SUN LINYU
Application Number:
JP2018031252A
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02J7/00; H01M10/44; H01M10/48
Domestic Patent References:
| JP2016090227A | 2016-05-23 | |||
| JP2014074671A | 2014-04-24 | |||
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| JP2015011406A | 2015-01-19 | |||
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Attorney, Agent or Firm:
Patent business corporation Ogasawara patent office