Battery Management Systems

Genasun can supply scalable battery management systems (BMS) for any battery system. Our BMS consists of one or more GLD BMS master modules, coupled with one cell module per lithium cell or group of paralleled lithium cells. The GLD aggregates cell data and coordinates cell balancing. Outputs are provided to control contactors to perform protection functions. All battery data is available via RS-232 and other formats, making our BMS an excellent choice for logging and battery system development. In addition to our stock BMS system, we can customize our technology for cost savings in OEM applications. Please contact us for details.

Applications:

Electric Vehicles
Lead-Acid Replacement
Hybrid and Plug-in Hybrid Cars
Robotics
Solar Cars (e.g. MIT SEVT)
Power for Remote Monitoring
Anything that needs to go faster, farther, higher, deeper, lighter, or longer

Genasun GLD Features and Specifications:

Input Voltage: 8-32V
Typical Supply Current: 15mA (not including contactor consumption)
Size: 12.00x4.87x1.20", supplied as PCB
Innovative cell balancing scheme is efficient yet tolerant of capacity mismatch
Simultaneous sampling of all cell voltages for insensitivity to current draw
All pack data available via RS-232 (CAN or RS-485 on option)
Fully isolated from cells
Each GLD Handles 1-24 cells
GLDs may be cascaded for 25-200+ cells (contact us for details)
Outputs for charge and discharge contactors
Alternator interface available for marine use
Audible warning codes for fault conditions
Automatic recovery from fault conditions

Conformal coating available
Factory configured for Lithium-Cobalt or Iron-Phosphate cells
Contact us for current measurement options
Requires one cell module per cell or group of paralleled cells
PRICE: $500 (contact us for volume pricing)
We can supply 500A EV-200 contactors to go with the GLD for $150 each.
Take a look at the BMS-Master manual for more information.

Example GLD Data Output

Cell voltage is reported in mV, and cell temperature in 10ths of a degree C. This data maybe logged on a computer running Hyperterminal, etc. or used directly by other system components.

2sec cycle counter: 0x00000C79

Cell  Temp Volt Flag
0000  0218 3079 10
0001  0231 3083 10
0002  0231 3091 10
0003  0218 3075 10
Flags: C:-- F:0000->0000 E:15->15->15


2sec cycle counter: 0x00000C7A

Cell  Temp Volt Flag
0000  0218 3079 10
0001  0231 3082 10
0002  0231 3090 10
0003  0218 3075 10
Flags: C:-- F:0000->0000 E:15->15->15

For more information about the flags, please see this detailed description.

Genasun Cell Module Features and Specifications:

BMS-Cell

BMS-Cell-81

BMS-Cell-105

Size: 2.59x1.50x0.45"
Supplied as PCB with cable
Bolts directly to smaller Thunder Sky/International Battery LCP/LFP cells
Mounting holes and solder pads for integration with 18650, 26650 and other pack configurations
High-precision cell voltage measurement, 1mV resolution
+-5mV typical accuracy, +-2mV typical accuracy after optional calibration
Voltage measurement range: 1.9-5V (Lithium Iron Phosphate version), 2.7-5V (Lithium Cobalt version)
300uA typical current draw
Cell temperature measurement accurate to 1 degree C typical
0.1 degree C temperature resolution
Cell temperature measured at bolt terminals or with optional temperature probe
Innovative cell balancing scheme is efficient yet tolerant of capacity mismatch
3 Hz sampling rate
Conformal coating available
Includes on-the-fly cell balancing when used with GLD
Shunts at programmed maximum voltage in disconnected mode
Visual indication of cell (over/under voltage/temperature)
Available in three different styles for easy installation on large format LFP cells.
Take a look at the BMS-Cell manual for more information.
BMS-Cell: $25 (contact us for volume pricing)
BMS-Cell-81: $35 adapted for 3.20" (81mm bolt spacing)
BMS-Cell-105: $35 adapted for 4.15" (105mm bolt spacing)

Please contact us for more information.