Basic Info.
Type
Lithium-Ion Battery Pack
Connection Mode
Parallel Connection
Discharge Rate
Low Discharge Rate
Accessories Type
Chargers
Specification
LiFePO4 48V 100Ah
Origin
Guangzhou, Guangdong, China
Product Description
PowerWall Home Energy Storage LiFePO4 Battery 51.2V 100Ah 1. General Information
This article defines the performance of 51.2V 100Ah LiFePO4 battery pack manufactured by Helith Technology (Guangzhou) Co., Ltd.. It describes the battery external & internal parts, battery cell specification, BMS specification, battery pack specification, function performance, reliability performance, warning and caution, etc.
The battery pack is mainly composed by 16 pieces of 3.2V 100Ah LiFePO4 battery cells, battery management system, metal shell and other necessary auxiliary materials. The battery could be used for energy storage and power supply for home, telecom base station, island, remote area, etc. 2. Battery Cell Specification
The biggest advantage of prismatic cells is its thin profile, lightweight and effective use of space. Due to the rectangle shape of these cells, it can facilitate better layering and increase flexibility in the products. With high capacity, fewer cells assembled together makes monitoring on each battery cell instead of cell string become possible. Changing defective battery cell is feasible too when there is cell failure.
2.1 Technical Feature- Intelligent factory design, high performance consistency;
- Square aluminum shell, high-precision explosion-proof valve, high safety performance;
- Low internal resistance, high discharge rate and stable discharge platform;
- Long cycle life, the capacity retention ratio exceeds 70% after 4000 cycle @ 0.5C/1C
2.2 Technical Parameters| # | Item | Parameter | Remark |
| 1 | Shell Material | Aluminum Alloy | |
| 2 | Cell Chemical System | LiFePO4 | lithium iron phosphate |
| 3 | Nominal Capacity | 100Ah | Discharge 0.5C and 2.5V cut off (25±2)ºC |
| 4 | Delivery Capacity | >100Ah | 1.0C discharge |
| 5 | Typical Voltage | 3.2V | working voltage |
| 6 | Max Charge Voltage | 3.65V | |
| 7 | Standard Charge Rate | 0.5C | 0.5C CC, 3.65V CV to 3.65V, cut off when charging rate lower than 0.05C |
| 8 | Standard Discharging Rate | 0.5C | |
| 9 | Max. Discharging Current | 1C | |
| 10 | Max. Pulse Discharging Current | 2C | 30s |
| 11 | Internal Impedance | ≤0.8mΩ | 1kHz, 2% SOC |
| 12 | Operation Conditions | Charge | 0ºC~50ºC, 60±25%R.H. | Low temperature charging like below 0ºC gets lower capacity and reduces cycle life. |
| Discharge | -20ºC~60ºC, 60±25%R.H. |
| 13 | Storage Conditions | -20ºC~55ºC, 60±25%R.H. | Cell must be recharged per half year, while battery pack with BMS per three months. |
| 14 | Net Weight | ≤2Kg | ±100g |
| 15 | Group Tolerance | Capacity | ≤1% | Low battery cell grouping tolerance improves battery pack performance. |
| Voltage | ≤20mV |
| IR | ≤0.5mΩ |
3. BMS Specifications
The batteries are supplied with a BMS (Battery Management System) that monitors and optimizes each battery cell during charge & discharge, protects the battery pack against over charge, over discharge, short circuit. Overall, the BMS helps to ensure battery pack safe and running accurately.
| # | Function | Description | Specification | Remark |
| 1 | Cell Over Voltage
Protection | Alarm Voltage | 3600mV | settable |
| Protection Voltage | 3650mV | settable |
| Protection Delay | 1.0s | settable |
Cell Over
Voltage Protection Release | Voltage Release | 3340mV | settable |
| Capacity Release | SOC<96% | settable |
| Discharge Current Release | 1A | |
| 2 | Cell Low Voltage
Protection | Alarm Voltage | 3000mV | settable |
| Protection Voltage | 2700mV | settable |
| Protection Delay | 1.0s | settable |
| Cell Low Voltage Protection Release | Voltage Release | 3100mV | settable |
| Charge Release | Automatic Release after Charging | |
| 3 | Pack Over Voltage
Protection | Alarm Voltage | 57.6V | settable |
| Protection Voltage | 58.4V | settable |
| Protection Delay | 1.0s | settable |
Pack Over
Voltage Protection Release | Voltage Release | 54.4V | settable |
| Capacity Release | SOC<96% | settable |
| Discharge Current Release | 1A | |
| 4 | Pack Low Voltage
Protection | Alarm Voltage | 48V | settable |
| Protection Voltage | 43.2V | settable |
| Protection Delay | 1.0s | settable |
| Pack Low Voltage Protection Release | Voltage Release | 49.6V | settable |
| Charge Release | Automatic Release after Charging | |
| 5 | Pack Charge Over Current
Protection | Alarm Current | 100A | settable |
| Protection Current | 105A | settable |
| Protection Delay | 1.0s | settable |
| Pack Charge Over Current Protection Release | Automatic Release | 1 minute after charger disconnection |
| Discharge Current Release | > 1A | |
| 6 | Discharge Over
Current Protection Level 1 | Protection Current | 105A | settable |
| Protection Delay | 1.0s | settable |
Discharge Over
Current Protection Level 1 Release | Automatic Release | 1 minute after charger disconnection |
| Discharge Current Release | > 1A | |
| 7 | Discharge Over
Current Protection Level 2 | Protection Current | 120A | settable |
| Protection Delay | 100ms | settable |
Discharge Over
Current Protection Level 2 Release | Automatic Release | 1 minute after charger disconnection |
| Discharge Current Release | > 1A | |
| 8 | Short Circuit Protection | Short Circuit Prediction | Short circuit of external load | |
| Protection Current | Three to four times of continuous discharge current |
| Protection Delay | < 3s | |
| Short Circuit Protection Release | Charge Release | Automatic Release after Charging | |
| Load Disconnection | External Load removed | |
| 9 | MOSFET High Temperature Protection | Alarm Temperature | 110ºC | settable |
| Protection Temperature | 115ºC | settable |
| Protection Release | 95ºC | settable |
| 10 | Charge Low Temperature Protection | Low Temperature Alarm | 5ºC | settable |
| Protection Temperature | 0ºC | settable |
| Protection Release Temperature | 5ºC | settable |
| 11 | Charge High Temperature Protection | High Temperature Alarm | 55ºC | settable |
| Protection Temperature | 60ºC | settable |
| Protection Release Temperature | 55ºC | settable |
| 12 | Discharge Low Temperature Protection | Low Temperature Alarm | -15ºC | settable |
| Protection Temperature | -20ºC | settable |
| Protection Release Temperature | -10ºC | settable |
| 13 | Discharge High Temperature Protection | High Temperature Alarm | 60ºC | settable |
| Protection Temperature | 65ºC | settable |
| Protection Release Temperature | 60ºC | settable |
| 14 | Low Ambient Temperature Protection | Low Temperature Alarm | -20ºC | settable |
| Protection Temperature | -25ºC | settable |
| Protection Release Temperature | -20ºC | settable |
| 15 | High Ambient Temperature Protection | High Temperature Alarm | 60ºC | settable |
| Protection Temperature | 65ºC | settable |
| Protection Release Temperature | 60ºC | settable |
| 16 | Balance Function | Activation Voltage | 3380mV | settable |
| Activation Voltage Difference | 30mV | settable |
| 17 | Self-Consumption | Working Current | With LCD | ≤ 40mA | |
| Without LCD | ≤ 30mA | |
| Low Power Mode | ≤ 250uA | |
| 18 | SOC Default Setting | Low Capacity Alarm | < 5% | settable |
| Low Capacity Alarm Release | ≥ 20% | settable |
| Full Capacity Setting | 100Ah | settable |
| 19 | Dormancy Function | Dormancy Voltage | 3300mV / Cell | settable |
| Dormancy Delay | 5 minutes | settable |
4. Battery Pack Specifications
| # | Items | Characteristics | Remark |
| 1 | Capacity | Normal Capacity | 100Ah | 5120Wh, 0.33C, 25ºC |
| Minimum | 97% | 0.5C, 25ºC |
| 2 | Voltage | Nominal Voltage | 51.2V | 3.2V per cell |
| Normal Charge Voltage | 58.4V | 3.65V per cell |
| Float Charge (for Standby Use) | 55.2V±0.5V | 3.45V per cell |
| End of Discharge | 40V | 2.5V per cell |
| 3 | Charge | Maximum Charge Current | 100A | 1C |
| Suggested Charge Current | ≤20A | 0.2C |
| Charging Current Limit | 20A | Triggering: 1) current ≥50A 2) Temp. ≤10ºC or ≥45ºC |
| 4 | Discharge | Maximum Discharge Current | 100A | 1C |
| Suggested Discharge Current | ≤20A | 0.2C |
| Inverter Connection | YES | capacitive load ≤ 27000μF |
| 5 | Indicator | SOC (state of charge) | Green LED x5 | see Product External for details |
| RUN | Green LED x1 |
| ALARM | Red LED x1 |
| 6 | Environment | Operation Temperature | Charge | 0~45ºC | |
| Discharge | -10ºC~65ºC | |
| Storage Temperature | -20ºC~50ºC | |
| Relative Humidity | 5%~95% | |
| Altitude | <3600m | |
| 7 | Communication | Port | RS232/RS485/CAN | RJ45 x2 & RJ11 x1 |
| Protocol | Modbus | customizable |
| Dry Contact | Yes | customizable |
| Dial Switch | 4 bit binary | |
| 8 | General | Shell Material | Q235 | SPCC |
| Physical Protection Level | IP30 | |
| Dimensions | W330xH172xD214 | ±2mm |
| Net Weight | 45Kg | |
Address:
Great Power Industrial Park, No 912, Shiliang Rd, Guangzhou, Guangdong, China
Business Type:
Manufacturer/Factory, Group Corporation
Business Range:
Electrical & Electronics
Management System Certification:
ISO 9001, ISO 14001
Company Introduction:
Helith is a lithium power supply system integrator. It′s invested by the main shareholders of Great Power, a well-known Chinese battery manufacturer. We are a young company, but we are creative. Our R&D team has worked in the first tier of well-known companies in lithium battery or power industry, like Emerson, CATL, ATL, EVE, Great Power, etc. By virtue of Great Power′s advantages in battery cell manufacturing, Helith transforms its R&D capabilities into various products, such as BMS battery management system, various customized lithium battery packs, home energy storage battery packs, home energy storage all-in-one units, etc.
We have full product development ability by hardware, software, structure engineers. They are all coming from top manufacturers of switching power supply and battery, like Emerson, CATL, ATL, EVE, Great Power, etc.
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