AndyH
Posts: 6384
Joined: Fri Apr 23, 2010 3:43 pm
Location: San Antonio

Re: Range Matters!

Mon Apr 26, 2010 11:47 am

Any thoughts on actual pack configuration? Starting with some fairly high-confidence 'knowns':

48 battery modules per pack
4-cells per module; 14.4V at 33Ah

We can arrange the pack into two independent parallel strings of 24 modules providing 345.6V and 33Ah (66Ah total). This is the approach taken by a number of earlier production EVs for a roughly 300V system.

I ask because...I'm thinking there may have to be some type of DC-DC between the Level III charge port and the pack because even if we fill the LiMn cells 100% we're still below the 400-440VDC Level III input.

Anyone have any Level III vehicle-side hardware experience?

KarenRei
Posts: 130
Joined: Fri Apr 23, 2010 2:56 pm

Re: Range Matters!

Mon Apr 26, 2010 12:43 pm

Where are you getting your "fairly high confidence knowns"?

AndyH
Posts: 6384
Joined: Fri Apr 23, 2010 3:43 pm
Location: San Antonio

Re: Range Matters!

Wed Apr 28, 2010 5:58 pm

KarenRei wrote:Where are you getting your "fairly high confidence knowns"?


Both of them come from Nissan and the battery manufacturer.

The thoughts on the possible parallel pack are borrowed from the way Hughes wired their US Electricar S10s and Prizm packs, and that 300V is a likely target for voltage.

Andy

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