Battery Vehicle Society

Sounds interesting. You would have to keep the wire runs for a 12v bus as short as possible as you would experience a large voltage drop over distance making it very inefficient. Perhaps you should consider a second 240 volt ring and use an inverter to take the 12volt power and change it to 240 volt...

The Asda store in Gosport now has a couple of charging posts, offering charging for up to 4 cars. I went to have a peek at them. IMG_0441.JPG They are the chargemaster points and you will need an access card in order to operate them. As you can see from the picture the spaces get filled with ICE car...

Be interesting to see some pictures. I would have to say, that I imagine that the data logging side of things is probably the most complex part of the BMS, and probably grew out of a necessity to know what the histroy was one the cells in the car so that they could begin to learn how the cells behav...

Hi Grumpy-b, do you know if this is the same for the BMS on the cars with the 25 cell pack as that looks like details for the 32 cell version? I have been told that the BMS for the 32 cell version differs to that on the 25 cell version. Would be interesting to know.

Glad that you got your car operational again Mart. That cell looks pretty awful - I can imagine that it took a fair bit of heat for it to end up like that. I suspect that it must have been some sort of internal failure to have caused that. Now you have got 2 Ev'ie's at least you wont have to fight t...

Right, time to strip down the car and see if I can get it fixed. So with the weather being a bit rubbish I had to clear out the garage to make room to get the car in so I could wouk in the dry. First job was to disconnect the 12 volt battery to disable to car. Didn't take to long to get the front of...

Well, the following day I went back to collect my car. Terry kindly let me charge the car for a while and to also put the cars 12 volt battery on charge as well. We noticed that the 12 volt battery voltage went from 11 volts up to 13.5 in a matter of minutes - not a good sign. So with Terry's help w...

Hi Chris,

There was a meeting last night in Porchester. We still have them on the second Thursday every month, and all are welcome.

edit :- just to confirm that it is still in the pub described in the first post of this thread.

Well my car failed on me tonight, as I was on my way to the southern BVS meet. Looks like my 12 volt battery has failed. I think the DC-DC converter is not charging it up. Terry kindly offered to let me get the car to his place as it is just around the corner from the meet. We had the battery on cha...

I think the charge current is important. Remeber the pack is in series and all cells are getting the same current. In the bulk charge phase, you can cram in very high currents and the voltage will stay fairly stable. Towards the end of the charge cycle some cell voltages begin to climb higher than o...