2MWH Lifepo4 Rechargeable Batteries For ESS Container Solar System Energy Storage 
Paramater
| capacity | 2MWh |
| rated power | 520KW(AC side,adjustable) |
| continuous output power | 500KW(AC side,adjustable) |
| output voltage range | DC323V~418V/DC422~528V |
| AC output voltage range | AC380V/AC480V |
| rated output frequency | 50Hz(48Hz ~50.5Hz) 60Hz(57.5Hz~61.5Hz) |
| power factor | -1 ~ +1(adjustable) |
| total harmonic distortion of current | ＜3% |
| output line connection mode | three-phase four-wire |
| PV | 20KWP(adjustable) |
| operation temperature range | -20℃~ 50℃ |
| relative humidity range | 5%~95%(non-condensing) |
| altitude range | ＜2000 metre |
| noise | ＜78dB |
| IP rating | IP 65 or NEMA 3R |
| communication tyoe | ethernet |
| dimension | standard 40 feet container (12192*2438*2591mm) |
| weight | 45 ton |
| distribution port | three-phase four-wire/ single-phase or single-phase one-wire/ground connection |
BMS Function
| Parameter | Parameter values | Remark |
| working power supply | DC12/24V | / |
| Equalization | Passive equalization | / |
| Voltage acquisition accuracy | ≤0.5%FSR | / |
Current acquisition accuracy
| ≤0.5%FSR | / |
| Temperature acquisition accuracy | ≤2℃ | / |
Insulation resistance detection accuracy
| ≤10% | / |
| SOC deviation | ≤8% | / |
| Voltage acquisition cycle | ≤200ms | / |
| Current acquisition cycle | ≤100ms | / |
Temperature acquisition cycle
| ≤100ms | / |
Voltage balance Balance Level | ≤±50mv | / |
| Protection | Over charge, over discharge, over temperature, short circuit | Protection fixed value can be set
|
| Communication mode | Ethernet,CAN,RS485 | / |
| Communication protocol | modbus | / |
| Control system response time | ≤200ms | From the receipt of instructions to the implementation of the instruction task
|
Battery pack picutre
2MWH lifepo4 battery pack system outside appearance.
Inside container:
What is an Lifepo4?
The lithium iron phosphate battery (LiFePO4 battery) or LFP battery (lithium ferrophosphate), is a type of lithium-ion battery using lithium iron phosphate (LiFePO4) as the cathode material, and a graphitic carbon electrode with a metallic backing as the anode. The energy density of LiFePO4 is lower than that of lithium cobalt oxide (LiCoO2), and also has a lower operating voltage. The main drawback of LiFePO4 is its low electrical conductivity. Therefore, all the LiFePO4 cathodes under consideration are actually LiFePO4.Because of low cost, low toxicity, well-defined performance, long-term stability, etc. LiFePO4 is finding a number of roles in energy storage,vehicle use, utility scale stationary applications, and backup power.LFP batteries are cobalt-free.
Why choose Benergy Lifepo4 battery pack?
The Benergy 2MWH is a Lithium Iron Phosphate battery (LiFePO4) with a rated capacity of 2MWH. The unique combination of state-of-the art technology and smart software makes this lithium battery a robust, safe and easy to use energy storage solution. Compared to conventional lead-acid batteries, the Benergy 2MWH lithium battery offers an enormous weight and space saving. It is very efficient, has extremely high performances and is maintenance free.
System composition
Our company is responsible for the design of the whole energy storage system, and the scheme mainly includes:
* lithium iron phosphate battery: battery cluster is composed of Benergy Lifepo4 power battery in series and parallel.
* PCS converter: Power Conversion System (PCS), two-way energy flow, charging and discharging integrated design. The battery pack is connected to the ac bus through PCS to ensure the stable and reliable power supply of bus.
* BMS: the battery management system (BMS) is the bond between the battery and the user, mainly for rechargeable batteries, to improve the utilization of the battery and prevent overcharging and over discharge of the battery. Charging and discharging control of energy storage system and battery SOC information monitoring can be completed according to the instruction.
* EMS: Energy Management system (EMS), responsible for collecting BMS information, setting control strategy and adjusting converter output according to battery information, only support local monitoring
* Container: using one container for the energy storage system, the container is divided into two parts--battery and electrical equipment, need to install below items inside of container: the battery pack (and related control devices), dc combiner box, air conditioner, automatic fire extinguishing systems, lighting inside the box, converter, EMS control cabinet, etc.
FAQ:
Q1: How should I pay?
A2: You can pay via T/T, PayPal, Western Union, Cash etc., 100% T/T in advance for samples. For large quantities, 30% T/T in advance as soon as order confirmed and the balance before shipping via T/T or L/C etc. If you prefer other payment terms, please contact us freely.
Q2: What is delivery time if we place an order?
A3: It depends order quantities. Usually, we can deliver goods within 35 -45 working days for small orders, for more QTY. order, let's confirm when you place offical order.
Q3: Are your factory or trading company?
A4: We are proffesional Lifepo4 cells and packs manufacturer with our own factory and brand BENERGY. We provide all kinds of OEM/ODM services for clients around globe.
Q4.What is your warranty?
A5:We offer 5 years or more warranty for this MWH system.Cycle Life at least 5000 times at 80% DOD,which means that,quivalent to 12 years with a daily charge/discharge, after that at least another 80% of battery capacity left.
