Battery value chain/Process/Cell manufacturing/Degassing - Revision history

Simon Stier: Text replacement - "Has predecessor" to "HasPredecessor"

2022-09-04T03:18:44Z

Text replacement - "Has predecessor" to "HasPredecessor"

Simon Stier: Text replacement - "Has successor" to "HasSuccessor"

2022-09-04T02:18:59Z

Text replacement - "Has successor" to "HasSuccessor"

Simon Stier: updated from Degassing

2021-11-19T15:15:40Z

updated from Degassing

Christina Leinauer at 10:12, 15 June 2021

2021-06-15T10:12:33Z

Christina Leinauer: Created page with "{{Semantic Element |label=Cell manufacturing/Degassing |description===Production process== *With many pouch cells (especially with larger cells) there is a strong evolution..."

2021-06-15T10:02:54Z

Created page with "{{Semantic Element |label=Cell manufacturing/Degassing |description===Production process== *With many pouch cells (especially with larger cells) there is a strong evolution..."

New page

{{Semantic Element
|label=Cell manufacturing/Degassing
|description===Production process==

*With many pouch cells (especially with larger cells) there is a strong evolution of gas during the first charging process.
*Pressurised good carriers are pressing this gas out of the cell into a dead space (also called a gas bag).
*During degassing, the gas bag is pierced in a vacuum chamber and the escaping gases are sucked off. The cell is then finally sealed under vacuum.
*The gas bag is separated and disposed as hazardous waste.
*Final folding and, if necessary, gluing of the seal edges to reduce the external dimensions of the pouch cell can be carried out as an option.
*The extracted gases must be post-treated (e.g. RTO) before they are fed into the exhaust system, depending on occupational health and safety and environmental protection regulations.

==Process parameters & requirements==

*Folding and gluing of sealing seams to increase volumetric energy density
*Damage-free folding of the edges
*Seam widths of up to 1 cm
*Sealing against moisture and oxygen

==Technology alternatives==

*Particularly in the case of smaller cells with lower gas generation and depending on the manufacturer, the gas bag is not separated after degassing.

==Quality influences==

*Pressing of the cells for degassing
*Sealing and folding technology
*Suction of gases under vacuum and in a dry atmosphere

==Quality features==

*Residual gas inside the cell
*Damage-free cell handling (different characteristics of the gas bubbles)

==Source==
Heimes, H.H.; Kampker, A.; Lienemann, C.; Locke, M.; Offermanns, C.; Michaelis, S.; Rahimzei, E. (2018) ''Lithium-Ion Battery Cell Production Process''; PEM of RWTH Aachen and VDMA, 3rd Edition, ISBN:978-3-947920-03-7
|relations={{Semantic Link
|property=Has predecessor
|value=Battery value chain/Process/Cell manufacturing/Formation
}}
}}

@@ Line 38: / Line 38: @@
 |value=Battery value chain/Process/Cell manufacturing/Formation
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-|property=Has successor
+|property=HasSuccessor
 |value=Battery value chain/Process/Cell manufacturing/Aging
 }}
 }}

@@ Line 35: / Line 35: @@
 |relations={{Semantic Link
-|property=Has predecessor
+|property=HasPredecessor
 |value=Battery value chain/Process/Cell manufacturing/Formation
 }}{{Semantic Link

@@ Line 1: / Line 1: @@
-{{Semantic Element
+{{GlossaryEntry}}{{Semantic Element
 |label=Cell manufacturing/Degassing
-|description===Production process==
+|description=
-*With many pouch cells (especially with larger cells) there is a strong evolution of gas during the first charging process.
+*Degassing is used to press out gas that evolved into dead spaces (i.e., gas bag) during the first charging process
-*Pressurised good carriers are pressing this gas out of the cell into a dead space (also called a gas bag).
+*Gas bag is pierced in a vacuum chamber and the escaping gases are sucked off
-*During degassing, the gas bag is pierced in a vacuum chamber and the escaping gases are sucked off. The cell is then finally sealed under vacuum.
+*Gas bag is disposed and extracted gases are post-treated before entering the exhaust system
-*The gas bag is separated and disposed as hazardous waste.
+*Final sealing and folding of cell under vacuum after gas bag removal
-==Process parameters & requirements==
+===Process parameters & requirements===
 *Folding and gluing of sealing seams to increase volumetric energy density
 *Damage-free folding of the edges
-*Seam widths of up to 1 cm
+*Seam widths
 *Sealing against moisture and oxygen
-==Technology alternatives==
+===Technology alternatives===
-*Particularly in the case of smaller cells with lower gas generation and depending on the manufacturer, the gas bag is not separated after degassing.
+*Depending on cell size, the gas bag is potentially not separated after degassing
-==Quality influences==
+===Quality influences===
 *Pressing of the cells for degassing
@@ Line 27: / Line 26: @@
 *Suction of gases under vacuum and in a dry atmosphere
-==Quality features==
+===Quality features===
 *Residual gas inside the cell
-*Damage-free cell handling (different characteristics of the gas bubbles)
+*Damage-free cell handling, depending on characteristics of the gas bubbles
-==Source==
+===Source===
 Heimes, H.H.; Kampker, A.; Lienemann, C.; Locke, M.; Offermanns, C.; Michaelis, S.; Rahimzei, E. (2018) ''Lithium-Ion Battery Cell Production Process''; PEM of RWTH Aachen and VDMA, 3rd Edition, ISBN:978-3-947920-03-7
 |relations={{Semantic Link
 |property=Has predecessor