Insight Central: Honda Insight Forum - View Single Post - grid charger/balancer
 
Go Back   Insight Central: Honda Insight Forum

Please Visit our Site Sponsors Page
Insightcentral.net is the premier Honda Insight Forum on the internet. Registered Users do not see the above ads.

» Auto Insurance
» Featured Product
» Wheel & Tire Center

View Single Post
Old 03-24-2010, 08:17 AM   #331 (permalink)
crx_rogus
Senior Member
 
Join Date: Feb 2009
Location: York, PA
Posts: 151
Default Assist at 3 bars, thermostat-based charge current limiting

Folks,

Does anyone's Insight "sit" at three bars while allowing Assist for a long time before starting to limit assist after a grid-based recharge (w/ an Idle Relearn immediately following that recharge)?

That's what mine does, and I'm assuming it's from the BCM thinking a full charge is achieved at what is actually a 75% absolute charge (80% for original BCMs), when it's actually usually near 100% charged, and it can't see and/or account for the difference. The BCM then tracks the pack depletion to what is supposed to equate to a 35% absolute charge (20% for original BCMs) at the 3 bars basement level but is actually 50% (100%-75%+35%) (or 100%-80%+20% = 40% for original BCMs). Assuming the Assist gets limited only when the BCM sees bi-stick voltage tap levels significantly increasing their negative slope and/or going below a threshold voltage, Assist would be allowed longer than expected given the higher than expected actual SOC.

(I'm also remembering newer replacement BCMs such as mine as keeping the pack in a Prius-like 35% to 75% SOC window, which could be off a bit, and of course many folks here probably haven't had Honda replace their packs because they found a better way to address pack issues , letting them keep the wider 20 - 80% SOC window via their original BCMs, which would also reduce the BCM's SOC calculation error I suspect I'm seeing.)

Does that resemble the experience of anyone else doing grid-based recharging, and are my assumptions reasonable?

Also, for summer months at least, would including at least a simple pack fan exhaust -based thermostat (i.e. attic fan t'stat -case) perhaps be a good idea for early exit of the high-current charging circuit in a bi-level charger? I suspect it certainly wouldn't hurt.

Regards,
Roger
__________________
Silver 2000 5spd Insight
218,000 mi.
55 - 76 mpg
rogerspace.org/2000insight.html

Action without philosophy is a lethal weapon; philosophy without action is useless.
- Soichiro Honda
crx_rogus is offline   Reply With Quote
 
Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:27 AM.



Powered by vBulletin® Copyright ©2000 - 2012, vBulletin Solutions, Inc.