Options for A123 LiFePO₄ 20Ah pouch cells both in parallel and series connections:
Since a low cost laser or ultrasonic welder is not within reach, spot welding (resistance welding) is an option.
Resistance welding is referenced in the pdf linked in this post by AntaresAdroit https://secondlifestorage.com/index.php?threads/getting-ready-to-dive-into-lifepo4.11287/#post-79100 but not exactly spot welding.
Another option is friction fit using holes punched in the tab with corresponding holes in copper/aluminum pieces secured by pop rivets or screws.
Another idea from AntaresAdroit is to use edge card connectors. https://secondlifestorage.com/index.php?threads/getting-ready-to-dive-into-lifepo4.11287/#post-79190 Which would work great as most have gold plated contacts and could handle the current. a 4s1p pack would use three edge card connectors
Clamps were mentioned in this post by jgilly69 https://secondlifestorage.com/index...4-pouch-cells-20ah-compacts.11280/#post-78936
Later floyd
Since a low cost laser or ultrasonic welder is not within reach, spot welding (resistance welding) is an option.
Resistance welding is referenced in the pdf linked in this post by AntaresAdroit https://secondlifestorage.com/index.php?threads/getting-ready-to-dive-into-lifepo4.11287/#post-79100 but not exactly spot welding.
Another option is friction fit using holes punched in the tab with corresponding holes in copper/aluminum pieces secured by pop rivets or screws.
Another idea from AntaresAdroit is to use edge card connectors. https://secondlifestorage.com/index.php?threads/getting-ready-to-dive-into-lifepo4.11287/#post-79190 Which would work great as most have gold plated contacts and could handle the current. a 4s1p pack would use three edge card connectors
Clamps were mentioned in this post by jgilly69 https://secondlifestorage.com/index...4-pouch-cells-20ah-compacts.11280/#post-78936
Later floyd