Go to advanced search

by DBMandrake
Sun May 19, 2019 1:11 pm
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

I spent most of today trying to perform the battery calibration without success. :( I've done the calibration before so I'm not entirely sure why it refused this time... First I discharged the battery to 3.76v for the lowest cell voltage - Ah capacity remained at 45.1Ah and did not update. Step one ...
by DBMandrake
Sat May 18, 2019 4:55 pm
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: Simon's big adventure

Wow what a great experience you've had--thanks for sharing the story, and thank goodness you went out prepared with extension cords and level I, even if not needed. You are definitely exploring new territory of these packs and cars, and every little bit helps understand what they do and how they wo...
by DBMandrake
Sat May 18, 2019 11:17 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

BTW I have apparently (by mistake) done just that. I went in BMU menus (Diagbox) looking for that option. I did not go into all the screens so I did not think I had actually done anything but this morning I had 45.7Ah in CaniOn, so I guess I went one click too far :idea: I had 33.7Ah right before. ...
by DBMandrake
Sat May 18, 2019 10:52 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

Thank you Simon that is very informative. As far as i know, nobody over here has a real MUT that will perform these tasks such as your Diagbox tool. Are you able to call up individual data list items or does it just give the entire list? For example items 56 and 57 deal with the eprom. ref: CMU DAT...
by DBMandrake
Sat May 18, 2019 7:00 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

About that, what is the exact purpose of this battery age value in the BMU ? My guess is that when you replace the entire traction battery with a "new" one, you enter it's age so that the initial Ah capacity estimate is not that of a brand new battery but that of one that has sat in a war...
by DBMandrake
Thu May 16, 2019 1:51 pm
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

It appears that Rupert printed out the lower 256 words of the eprom, but the datasheet indicates room for 512--i wonder what was in the upper block, if it were blank or had some data? In his arduino code, ADW needs to be 9 instead of 8, in order to read out the upper block. Looking at the data, i t...
by DBMandrake
Thu May 16, 2019 1:25 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

Here is dani's photo of the main contactors showing the buss bar link for the (-) contactor going to the right rear corner module, and the buss bar link (+) contactor and pre-charge contactor going to the 4-cell module on the right side of the car. Hmm, you've got me wondering now. If I was dealing...
by DBMandrake
Wed May 15, 2019 8:12 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 69
Views: 7855

Re: not charging my iON, cell or CMU or BMU problems

the cell numbering layout chart that Rupert used (referenced on the speakev forum) is incorrect. i posted a correct version here: http://myimiev.com/forum/viewtopic.php?f=23&t=3943&p=38824#p38832 the most negative, CMU01, is in the right rear corner of the pack, not at the service plug. Are...
by DBMandrake
Wed May 15, 2019 5:27 am
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 52
Views: 7740

Re: Is my battery dying ?

I will charge to 4.1v and then discharge to 3v. The Yuasa spec sheets show that they test between 2.75-4.1v but there is very little below 3v. That should give me a good idea if the cells are usable in a car. Curious to know whether you have received your block of 8 cells yet and if so whether you ...

Go to advanced search