Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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50/00
Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
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H01M50/60
Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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H01M50/609
Arrangements or processes for filling with liquid, e.g. electrolytes
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H01M50/636
Closing or sealing filling ports, e.g. using lids
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