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US 8,771,866 B2Granted
Pouch type secondary battery and the fabrication method thereof
AssigneeSamsung SDI Co., Ltd.
InventorJangho Yoon
Life of this patent
Estimating the term…
Abstract
A method of forming a secondary battery comprises: positioning an electrode assembly between a first pouch sheet and a second pouch sheet; initially sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of the first and second pouch sheets; and additionally sealing outer portions of the first pouch sheet and of the second pouch sheet on the at least one side of the first and second pouch sheets.
Claims20
A method of forming a secondary battery comprising:
- positioning an electrode assembly between a first pouch sheet and a second pouch sheet;
- initially sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of the first and second pouch sheets so that a space is formed between the sealed portion and the electrode assembly wherein the space extends the length of the electrode assembly on two sides of the electrode assembly;
- injecting an electrolyte into the pouch after initially sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of the first and second pouch sheets wherein the electrolyte travels the length of the length of the electrode assembly in the spaces;
- and
- additionally sealing outer portions of the first pouch sheet and of the second pouch sheet on the at least one side of the first and second pouch sheets wherein additionally sealing outer portions of the first pouch sheet and the second pouch sheets results in sealing more of the same outer portions of the first pouch sheet and of the second pouch sheet than was sealed when the outer portion of the first pouch sheet and the inner portions of the second pouch sheet was sealed so that the space formed between the sealed portion and the electrode assembly is removed.
2 more elements
A secondary battery comprising:
- an electrode assembly positioned between a first pouch sheet and a second pouch sheet,
- wherein outer portions of the first pouch sheet and of the second pouch sheet are sealed together on at least one side of the first and second pouch sheets, and
- wherein the outer portions comprise a first plurality of seal marks having a first pitch difference between the seal marks, and a second plurality of seal marks having a second pitch difference between the seal marks.
A method of forming a secondary battery comprising:
- positioning an electrode assembly between a first pouch sheet and a second pouch sheet;
- first sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of a first, a second and a third side of the first and second pouch sheets so that a space is formed between the electrode assembly and the sealed portions wherein the space extends the length of the electrode assembly on two sides of the electrode assembly;
- injecting an electrolyte through unsealed outer portions of the first pouch sheet and the second pouch sheet on a fourth side of the first and second pouch sheets wherein the electrolyte travels the length of the length of the electrode assembly in the spaces;
- and
- second sealing outer portions of the first pouch sheet and of the second pouch sheets on the fourth side of the first and second pouch sheets;
- and
- additionally sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of the first and second pouch sheets wherein the additional sealing outer portions results in more of the same outer portions of the first and second pouch sheet being sealed than was sealed in the first sealing and wherein the electrolyte is injected through the unsealed outer portions prior to additionally sealing the outer portions so that the space is substantially removed.
4 more elements
Dependencies are inferred from the claim text.