Secondary battery and apparatus and method for measuring dimension of secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsTae Hyun Kim, Kieun Sung
Life of this patent
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Abstract
The present invention relates to a secondary battery and an apparatus and method for measuring a dimension of the secondary battery. The secondary battery according to the present invention comprises: an electrode assembly in which an electrode and a separator are alternately laminated to be combined with each other; a pouch accommodating the electrode assembly therein; and a fluorescent reference marker applied to a portion of an outer surface of the pouch and comprising a fluorescent material, wherein the fluorescent reference marker emits fluorescence when an electromagnetic wave is irradiated so that the fluorescent reference marker serves as a reference point for measuring a dimension of the secondary battery.
Claims20
A secondary battery comprising:
- an electrode assembly in which an electrode and a separator are alternately laminated to be combined with each other;
- a pouch accommodating the electrode assembly therein;
- and
- a fluorescent reference marker deposited on a portion of an outer surface of the pouch and comprising a fluorescent material,
- wherein the fluorescent reference marker emits fluorescence when an electromagnetic wave is irradiated so that the fluorescent reference marker serves as a reference point for measuring a dimension of the secondary battery, and
- the fluorescent reference marker is deposited at each side or at each corner of the outer surface of the battery.
An apparatus for measuring a dimension of a secondary battery, comprising an electrode assembly and a pouch accommodating the electrode assembly, the apparatus comprising:
- an ultraviolet light irradiating ultraviolet rays to fluoresce a fluorescent reference marker deposited on a portion of an outer surface of the pouch, wherein the fluorescent reference marker comprises a fluorescent material;
- and
- a laser measurement unit measuring the dimension of the secondary battery on the basis of detected fluorescence of the fluorescent reference marker irradiating laser light to the pouch;
- and receiving reflected laser light irradiated to the pouch and fluorescence of the fluorescent reference marker that fluoresces by the ultraviolet rays irradiated by the ultraviolet light to measure the dimension of the secondary battery on the basis of detected fluorescence of the fluorescent reference marker.
A method for measuring a dimension of a secondary battery comprising an electrode assembly and a pouch comprising a main body accommodating the electrode assembly, the method comprising:
- a fluorescent marking step of applying a fluorescent reference marker comprising a fluorescent material on a portion of an outer surface of the pouch;
- an ultraviolet irradiation step of irradiating ultraviolet rays to the pouch to allow the fluorescent reference marker applied to a portion of the outer surface of the pouch to fluoresce;
- a dimension measurement step of irradiating laser light to the pouch;
- and
- receiving reflected light from the pouch to measure the dimension of the secondary battery on the basis of detected fluorescence of the fluorescent reference marker.
Dependencies are inferred from the claim text.