Secondary battery internal pressure measurement method
AssigneeSK On Co., Ltd.
InventorSang Jun PARK
Life of this patent
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Abstract
In order to more accurately measure internal pressure of a secondary battery, the present disclosure provides a measurement method including (a) interposing the secondary battery between an upper plate and a lower plate, (b) increasing internal pressure of the secondary battery by injecting a gas into the inside of the secondary battery, (c) monitoring surface pressure of the secondary battery at a measuring member which is in contact with the lower plate, and (d) measuring a value of the surface pressure from the measuring member at a point in time when at least one sealing portion of the secondary battery is vented.
Claims14
A method of measuring internal pressure of a secondary battery comprising:
- (a) interposing the secondary battery between an upper plate and a lower plate;
- (b) increasing the internal pressure of the secondary battery by injecting a gas into the inside of the secondary battery;
- (c) monitoring surface pressure of the secondary battery at a measuring member which is in contact with the lower plate;
- and
- (d) measuring a value of the surface pressure from the measuring member at a point in time when at least one sealing portion of the secondary battery is vented,
- wherein the gas in step (b) is injected at a predetermined time interval.
Dependencies are inferred from the claim text.