Hi,
Working in our conversion (a Mohave Quad) some time ago, we disliked the idea of having a BMS, with some many cables and conections, attached to the battery box.
Having worked a bit with RC LiPo packs, I thought we could emulate their system. That is, having the BMS outside the vehicle, along with the charger.
That way you avoid having a fragile circuit jumping in the Quad, but still get full cell balancing when charging.
Here there are some pictures of the components we are using to build our system:
Charger on the left, BMS on the right.
Another view,
Big, industrial plug,
The cells,
Now that we are building the pack, I am starting to have some doubts. So these are my questions to the experts here:
- Small wires from the cells to the BMS will be 50-70cm long. Could this length cause a voltage fall, fooling the BMS?
-Can frequent plug/unplug system affect the BMS (i.e. sparks from capacitors)?
-Is there any other problem I should know/prevent for this kind of system?
The components we have:
Charger: http://www.evassemble.com/index.php?main_page=product_info&cPath=3&products_id=173
Cells: 24 Sinopoly LiFePo, 60AH. Bought from Mike Schooling on this forum.
BMS: http://www.evassemble.com/index.php?main_page=product_info&cPath=6&products_id=46
Working in our conversion (a Mohave Quad) some time ago, we disliked the idea of having a BMS, with some many cables and conections, attached to the battery box.
Having worked a bit with RC LiPo packs, I thought we could emulate their system. That is, having the BMS outside the vehicle, along with the charger.
That way you avoid having a fragile circuit jumping in the Quad, but still get full cell balancing when charging.
Here there are some pictures of the components we are using to build our system:
Charger on the left, BMS on the right.
Another view,
Big, industrial plug,
The cells,
Now that we are building the pack, I am starting to have some doubts. So these are my questions to the experts here:
- Small wires from the cells to the BMS will be 50-70cm long. Could this length cause a voltage fall, fooling the BMS?
-Can frequent plug/unplug system affect the BMS (i.e. sparks from capacitors)?
-Is there any other problem I should know/prevent for this kind of system?
The components we have:
Charger: http://www.evassemble.com/index.php?main_page=product_info&cPath=3&products_id=173
Cells: 24 Sinopoly LiFePo, 60AH. Bought from Mike Schooling on this forum.
BMS: http://www.evassemble.com/index.php?main_page=product_info&cPath=6&products_id=46