Hello Endless-sphere,
I've been working on a better BMS and I'd like to offer some members of ES the opportunity to test the first revision. This first batch is scheduled to be done in September 2014.
In general:
Functionality:
User interface:
Datalogging capabillities:
Pricing:
Avatible sizes:
An 18s BMS can be used with 13s, 14s, 15s, 16s or 17s battery - no special modifications needed, only correct wiering. This applies for every odd number of cells with a different size of BMS.
Specifications:
Updates will be posted here as the design is finished. Mainly I'm interested in the size people are interested in. For now, the 18s version is the one that will be focused on.
I've been working on a better BMS and I'd like to offer some members of ES the opportunity to test the first revision. This first batch is scheduled to be done in September 2014.
In general:
- Every feature you would find on a normal BMS and then some
Key functionality (By plugging in a SD card or a USB stick)
Datalogging capabillities
Functionality:
- Adjustable charge voltage balance treshold
Adjustable protection voltage (both HVC and LVC)
Adjustable temperature cutoff (both for charging at low temperatures and discharging at high temperatures)
Broken Wire detection, if a sense wire comes loose - the BMS will detect it
User interface:
- A computer program will aid in the programming of all the adjustable parameters, the SD card will transfer the settings to the BMS.
Datalogging capabillities:
- Histogram output of common data (Temperatures, discharge current, cell voltages)
Total AH in, Total AH out
Pricing:
- Is not set yet, but a price of around 5-10 USD per cell is a ballpark figure.
Avatible sizes:
- 6s
12s
18s
24s
30s
An 18s BMS can be used with 13s, 14s, 15s, 16s or 17s battery - no special modifications needed, only correct wiering. This applies for every odd number of cells with a different size of BMS.
Specifications:
- Balacing current: 25mA
No uneven draw on battery cells
Standby current 20uA (will be tested)
JST-XH (2,5mm pitch) connectors
Minitarized design
Updates will be posted here as the design is finished. Mainly I'm interested in the size people are interested in. For now, the 18s version is the one that will be focused on.