Temperature abnormality detecting apparatus and method for...

Details Temperature abnormality detecting apparatus and method for... Temperature abnormality detecting apparatus and method for...

2004-06-10

2009-02-17

Tso, Edward (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With thermal condition detection

C320S153000

Reexamination Certificate

active

07492129

ABSTRACT:
A battery ECU includes i) a circuit connected to a plurality of battery temperature sensors provided on a plurality of battery cells which make up a battery, and a cooling fan, the circuit detecting operation of the cooling fan, and ii) a circuit that determines that there is a temperature abnormality in a battery based on the difference between a maximum value and a minimum value of battery temperatures measured by the battery temperature sensors only when the period of time during which temperature increases within a predetermined period of time in the battery temperatures measured by the battery temperature sensors continue to be less than a threshold value is longer than a predetermined period of time, and the cooling fan has been operating for a longer period of time than a suitable cooling fan operating time obtained based on the difference between the maximum value and the minimum value of the measured battery temperatures.

REFERENCES:
patent: 5982152 (1999-11-01), Watanabe et al.
patent: 6809502 (2004-10-01), Tsujii et al.
patent: 2003/0087148 (2003-05-01), Minamiura
patent: A 11-178231 (1999-07-01), None
patent: A 2001-313092 (2001-11-01), None

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