×

BATTERY INTERNAL SHORT-CIRCUIT DETECTING DEVICE AND METHOD, BATTERY PACK, AND ELECTRONIC DEVICE SYSTEM

  • US 20100201321A1
  • Filed: 07/23/2008
  • Published: 08/12/2010
  • Est. Priority Date: 07/26/2007
  • Status: Abandoned Application
First Claim
Patent Images

1. A battery internal short-circuit detecting device, comprising:

  • a battery temperature detection unit for detecting a battery temperature Tr;

    an ambient temperature detection unit for detecting an ambient temperature Te;

    an average heating value detection unit for detecting an average value Pav of battery heating values per predetermined first period Δ

    W1, which are generated by discharging or charging the battery;

    a battery temperature estimation unit for obtaining a battery temperature Tp estimated to be reached after a lapse of a predetermined second period Δ

    W2 since the detection of the average value Pav of the heating values, based on the average value Pav of the heating values and the ambient temperature Te; and

    an internal short-circuit determination unit for determining that an internal short circuit has occurred when an actual battery temperature Tr after the lapse of the second period Δ

    W2 is equal to or greater than the sum of the estimated battery temperature Tp and a predetermined coefficient α

    .

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×