Description
GBS is a high-tech manufacturer who specializes in developing and manufacturing of LiFeMnPO4 power battery packs. GBS owns a patented environmentaly friendly solvent binder (which replaces “PVDF”) and creates a unique scalable battery cell design. GBS has developed more than 10 battery products with single cell capacities ranging from 20AH to 400AH. They are the ideal energy sources not only for electric bikes, scooters, hybrid electric vehicles (HEVs) and electric vehicles (EVs), but also for energy storage devices used in solar and wind electricity generation applications and other multi-power systems, as well as military use.
GBS packages are specially designed for electric golf cart, scooter and
motorcycle applications requiring minimal battery weight and
extended range.
GBS Features
- 10% higher energy density by weight and by volume than Thundersky batteries.
- Superior safety performance due to patented new safety valve and pressure cap designs.
- Batteries do not explode or catch fire when batteries are shorted or punctuated resulting in internal shorts.
- Robust connection due to new electrode terminal design using four rivets or four screws per terminal. This helps prevent loose connections caused by vibration.
- Reduced impedance due to improved electrode terminal design.
- Improved cycle life.
- New cell structure better facilitates BMS integration and battery pack formation, and improves air circulation.
Specifications
Battery Pack:
- Capacity: 7.68 kWh
-
Voltage range: 60.0-87.0 V
- Nominal Voltage: 76.8 V
- Nominal Capacity: Choose from 40 Ah, 60 Ah, or 100 Ah
- No. of Cells: 24
- LiFeMnPO4 chemistry
- Battery Weight: 88.2 lbs (40 Ah), 122 lbs (60 Ah), 166 lbs (100 Ah)
Charger:
Choose from a variety of 110VAC and 220VAC chargers at checkout, including the stock GBS charger or ElCon PF corrected speed charger.
Note about GBS charger polarity:
GBS chargers with an output of 10A or less come with an IEC type connector for the output, in which "N" is positive, and "L" is negative, the third prong is not used. GBS chargers with an output of more than 10A come with an Anderson style connector for the outout, in which "+" is positive, and "-" is negative. A mating connector comes with the charger.
GBS chargers all have short circuit, reverse polarity, and load protection.
Battery Management System (BMS) Overview
The Energy Management System is designed for Li-ion battery pack using GBS 40Ah, 60Ah or 100Ah cells. The system components include a CPU, sample boards (connected as a daisy chain), a cable connecting the sample boards to the CPU, a shunt sensor and an optional LCD screen. The features of the Energy Management System are:
- Designed for battery packs using GBS 40Ah, 60Ah or 100Ah cells
- A distributed system measuring voltage and temperature of each Li-ion cell
- Daisy chain connection supporting up to 156 cells
- Cell balancing
- Integrated Ground Fault Detection and alarm output
- Pack voltage measurement
- Pack SOC calculation
- Low voltage and high voltage alarm cutoff outputs
- Optional CAN communication output
- Composite video output
- Made in the U.S.A.
BMS Product Specifications:
- Items Displayed: Pack voltage, current and capacity on main screen, individual cell number, cell voltage and cell temperature on detail screen(s).
- CPU Power: 8-20V, 120mA
- Battery Voltage: 12-560V
- Number of Cells Supported: up to 156
- Shunt Input: 500A = 50mV
- Voltage Resolution: 0.1V
- Current Resolution: 1A
- Temperature Range: -99F to +199F or -146 to +92C
- Video Output: Composite Video, Color, NTSC
- Measurement Accuracy: <1% of Full Scale
- Measurement Speed: 3 times per second main screen; 1 time per second detail screen(s).
- Cell Voltage: 2.00 to 4.50V
- Balancing Threshold Voltage:3.70V
- Balancing Current: 0.5A
- Digital Output Current: 4A Surge for 100mS;2A Continuous
- Output Delay (default): 30 seconds
- Ground Fault Detection: 2mA (5000 Ohm/Volt)
- CPU Size: 144 x 66 x 47 mm
- Shunt Size: 3.25 x 1.75 x 1.75 in
The BMS computer is powered by a 12V DC source. The option to purchase small 20W low-noise DC-DC converter (for powering the CPU only- you will need a separate DC-DC converter to power lights, etc) will become available after adding this item to your shopping cart.
Warranty
1 year limited warranty included with package purchase.
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