Baterai
Baterai dalam komponen PLTS On Grid dengan Baterai atau Off Grid berfungsi untuk menampung kelebihan listrik yang berasal dari inventer. Energi listrik dalam baterai dapat digunakan ketika listrik yang bersumber dari cahaya matahari tidak mencukupi kebutuhan listrik sehari-hari. Adapun baterai yang digunakan dalam sistem PLTS ini yaitu Deep Cycle Gel Battery atau Lithium Battery.
Deep Cycle Gel Battery
100Ah - 200Ah
Deep Cycle Gel Battery uses the seated gel technology and is designed for high reliable, maintenance-free power for renewable energy applications. Depending on the advantage gel technology, optimum grid and plate design, the HiCELL gel battery offers highest power and reliability for your equipments.
Application
- Electric Powered Vehicles
- Golf Cars
- Commercial deep cycle applications
- Power Plant
- UPS System
- Water Pumpling
- Wind Generation
- Cathodic Protection
- Communications
- Solar System
Discharge and Cycling Ability
Battery discharge capacity and cyclic life are depended on the depth of discharge (DOD), and the ambient temperature.
The HiCELL gelled battery is designed to the “acid limited”. This means that the power in the acid is used before the power in the plates. This design prevents the plates from ultra-deep discharges. Ultra-deep discharging is what causes life-shorting plates shedding and accelerates positive grid corrosion which destroy a battery.
Capacity VS Operating Temperatures
Shown are the changes in capacity for a wider ambient temperature range, giving the available capacity, as a percentage of the rated capacity, at different ambient temperatures, for 3 different load examples, with uninterrupted discharge to the appropriate discharge cut-off voltage.
The values for the upper edge of the curves were obtained from changing at an ambient temperature of +20oC with a voltage limit to 2.30V/Cell. For the lower edge, charging was carried out at the specified ambient temperature. The curves show the behavior of battery after a number of cycle.
Specification
| Model | Voltage (V) | Capacity (Ah) | Internal Resistance (M) | Dimensions | Terminal | Weight (kg) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | Width | Heigth | Total Height | |||||||||||
| mm | in | mm | in | mm | in | mm | in | Type | Position | |||||
| Hi-12100-V | 12 | 100 | 5 | 330 | 13 | 171 | 6.7 | 214 | 8.4 | 220 | 8.7 | T9 | C | 32 |
| Hi-12150-V | 12 | 150 | 4.2 | 485 | 19 | 172 | 6.8 | 240 | 9.4 | 240 | 9.4 | T11 | C | 44 |
| Hi-12200-V | 12 | 200 | 3.3 | 552 | 21 | 238 | 9.4 | 222 | 8.7 | 222 | 8.7 | T11 | E | 66 |
Lithium Battery
Lithium Iron Phosphate (LiFePO4)
Features of LiFePO4 battery
- Longer Cycle Life : Offers up to 10times longer cycle life and five times longer float / calendar life than lead acid battery, helping to minimaze replacement cost and reduce total cost of ownership
- Lighter Weight : About 40% of the weight of a comparable lead acid battery. A 'drop in' replacement for lead acid batteries.
- Higher Power : Delivers twice power of lead acid battery, even high discharge rate, while maintaining high energy capacity
- Wider Temperature Range : -20oC~60oC
- Superior Safety : Lithium Iron Phosphate chemistry eliminates the risk of explosion or combustion due to high impact, overchanging or short circuit situation
- Increased Flexibility : Modular Design enables deployment of up to 15 batteries in parallel
BMS Specification
- Overchange detection function
- Discharge detection function
- Current detection function
- Temperature function
- Short detection function
- Balance function
| Electrical Characteristics | Nominal Voltage | 48V |
| Nominal Capacity | 50Ah | |
| Energy | 2400Wh | |
| Internal Resistance | < 90m Ω | |
| Cycle Life | >2000 cycles @0.2C & 25oC 100% DOD | |
| Design life | 3 years | |
| Months Self Discharge | <3% | |
| Efficiency of Charge | 100%@0.2C | |
| Efficiency of Discharge | 96~99%@0.5C | |
| Standard Charge | Charge Voltage | 54V |
| Standard Charge Current | 10A | |
| Max. Continuous Charge Current | 50A | |
| Charge Cut-off Voltage | 55.5V | |
| Standard Discharge | Discharge Cut-off Voltage | 40V |
| Standard Discharge Current | 10A | |
| Max. Continuous Discharge Current | 50A | |
| Environmental | Charge Temperature | 0oC to 50oC @60±25% Relative Humidity |
| Discharge Temperature | -20oC to 60oC @60±25% Relative Humidity | |
| Storage Temperature | 0oC to 40oC @60±25% Relative Humidity | |
| Water Dust Resistance | IP30 | |
| Mechanical | Cell & Method | 15S1 P |
| Shell material | Iron (SPCC) | |
| Dimensions (mm) | 442x400x132 | |
| Weight (kg) per block | Approx. 32kg | |
| Weight (kg) per box (battery packing) | Approx. 33kg | |
| Gravimetric specific energy | 75WH/kg | |
| Protocol | Double RS485/RS232 | |
| SOC | LEC | |
| Certificates | CE, UN38.3, MSDC, etc | |
State of Charge Curve
Charging Characteristics
Different Temperature Discharge Curve
Different Rate Discharge Curve
Self Discharge Characteristics Curve
Cycle Life Curve
