CONTROL VALVE TYPE LEAD-ACID BATTERY

摘要

PROBLEM TO BE SOLVED: To obtain compatibility of a high battery output and life characteristics for deep discharge, since the high battery output is required to cope with frequent restart of an engine and heavy discharge such as driving a motor and driving auxiliaries is carried out, in a control valve type lead-acid battery used for an idling stop vehicle and a hybrid vehicle.

SOLUTION: The specific surface area of 5.0 m2/g-8.0 m2/g is set for a positive electrode active material and the specific surface area of 0.80 m2/g-1.4 m2/g is set for a negative electrode active material. A high pressure of 500 kg/dm2or higher is applied to a group of electrodes each of which is formed by interposing a mat separator containing glass fiber as a main component between a positive electrode and a negative electrode with the group of electrodes stored in a battery jar. Thereby, the high output required for restart and life characteristics in a deep charge and discharge cycle becomes compatible with each other.

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