If Alta existed - How would they have handled the battery issue?

[Oded]

Curious as a hypothetical question - How would Alta have handled the wire bond issue in the R packs? They were able to replace all packs? We know that fixing the broken wire bonds is not enough.

This is quite an expensive repair, and we are not talking about few dozens bikes, but many more.

What are your thoughts?

 

[Rashid510]

Curious as a hypothetical question - How would Alta have handled the wire bond issue in the R packs? They were able to replace all packs? We know that fixing the broken wire bonds is not enough.

This is quite an expensive repair, and we are not talking about few dozens bikes, but many more.

What are your thoughts?

What do you mean by "fixing the wirebonds is not enough". The root cause to the R pack problem was the wirebonds. Now sure there may have been other errors (humidity errors, isolation)

The overall goal was to replace as many packs as possible. Now if Alta still existed, there may have been a push to go to a better cell/weld option. Additionally readjust the firmware to minimize the millivolt sensitivity.

 

[Oded]

Thanks Rashid, Figured that the number of cases could have been extremely high and expensive for a small company, but I could be wrong.

Fixing the broken wire bonds is not enough. They'd have to fix all wire bonds in these malfunctioned packs including those that haven't failed yet.

 

[Rashid510]

Thanks Rashid, Figured that the number of cases could have been extremely high and expensive for a small company, but I could be wrong.

Fixing the broken wire bonds is not enough. They'd have to fix all wire bonds in these malfunctioned packs including those that haven't failed yet.

The easier way is to replace the module entirely with a known good set of wirebonded cells. Yes you can try to discharge the module to match the p-groups and then rewirebond...but requires time and equipment. In a production setting, replacing known bad with a known good is faster and in some cases cheaper to deal with on the operational side.