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Scope of Supply
No. | Product Name | Product Model | Unit | Quantity | Remark |
1 | Battery System | 2007.04KWH | |||
1. 1 | Battery Module | 1 P 16 S | pc | 140 | BMU：Party B's choice Collection Line ：Party B's choice |
1.2 | High voltagecontrol box | Standard | pc | 10 | BCU：party B's choice Main control wiring harness：party B's choice |
1.3 | Battery Rack | 2 columns 8 layers | pc | 10 | party B's choice |
1.4 | Control the Confluence cabinet | 800*600*1800 | set | 2 |
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2 | Electric Accessory | ||||
2. 1 | PCS | 500KW Hybrid inverter | set | 2 | |
2.2 | EMS | set | 1 | ||
3 | Energy storage container | 40 feet | set | 1 | Including lighting, sockets, air conditioning, etc. |
Product Overview
The product is used in power storage system, the battery is aluminum shell lithium iron phosphate battery；Modular design of battery pack for easy handling, installation, and maintenance；The battery pack can monitor and store battery pack parameters in real-time, achieving local protection.Meet the power energy storage system peak regulation, frequency regulation, peak cutting and valley filling, load dynamic tracking, off-grid backup power supply and other applications.
Running logic
Give priority to using photovoltaic to supply power to the load, and charge the battery if the photovoltaic is redundant.
When photovoltaic power is insufficient, use batteries.
When photovoltaic and batteries are insufficient, use the grid.
Priority level of use ：photovoltaic > battery > grid
Suggested photovoltaic panel assembly mode: 10~ 12 panels are recommended to be connected in series for a single channel, and each MPPT module can be connected to 60KW at most (it is recommended to connect to one MPPT after 10 channels are converged).Therefore, it is suggested that the specification of photovoltaic junction box is: 10 in and 1 out.
Detailed Introduction of Technical Solution
Technical Solution
The energy storage system medium is the lithium iron phosphate battery with high safety and high cycle life, which has the characteristics of modularity and easy installation and maintenance. Aluminum shell unit 3.2V/280Ah, laser spot welding technology is used to form the PACK, the battery module is 1P16S/51.2V280AH rated power of14.336kWh.
The 14 cell modules in series are 1 cluster with energy 200.704kWh.
The battery system consists of 5 clusters with a total energy of 1003.52KWh, which is fed into a control bus cabinet and connected to 500KW PCS The battery system 1 is stacked as 1 channel, with 2 channels in total, which are output to the load after parallel operation.
System Parameter Table：
Item | Parameter | Remark |
Total Energy | 2007.04KWh | 25℃@0.5c rated |
Rated Voltage | 716.8V | |
Working Voltage | 604.8V~784V | Cell2.7V/Cell3.5V |
Sustainable Charging Power | 1000kW | 25℃±10 |
Sustainable Discharging Power | 1000kW | 25℃±10 |
Transfer Efficiency | DC Side≥92% | 25℃ , 1C |
Maximum charging and discharging current of a single cluster | Current：140A | |
Weight | 110kg | ±3kg,single module |
Operating Altitude | <2000m | ≥2000m required reduction |
Protection Grade | IP54 | |
Fire Fighting System | Gas extinguishing system | |
Battery operating environment temperature | 0~45℃ |
Cell Performance
The battery cell adopts lithium iron phosphate battery ，capacity:280Ah ，nominal voltage3.2V， grade A cell，operating voltage range:2.5~3.65V，Monthly self-discharge rate of cell≤3%，The battery has passed GBT 31484-2015, GBT 31485-2015 and GBT 31486-2015 national strong test, and passed GB36276-2018 third-party test certification. And through UL1973, UL9540A, IEC62619, UN38.3, CB certification and other international third-party certification.
Item | Parameter | Remark |
Cell Type | lithium iron phosphate | |
Weight | 5.43±0.20kg | After wrapping blue film |
Factory Internal Resistance （1kHz） | 0. 18±0.05mΩ | 27%SOC ， Based on the online testing data of the production line |
Rated (nominal) capacity | 280Ah | (25±2)℃,Standard Charging and Discharging |
Nominal Voltage | 3.2V | (25±2)℃,Standard Charging and Discharging |
Rated Energy | 896Wh | (25±2)℃,Standard Charging and Discharging |
Working voltage | 2.50～3.65V 2.00～3.65V | Temperature＞0℃ Temperature≤0℃ |
energy density | ≥160Wh/kg | (25±2)℃,Standard Charging and Discharging |
Recommended SOC usage window | 10%～90% | N.A. |
Recommended SOC usage window | ≤3.0% | Three months after shipment, the battery cells are charged to 40% SOC as standard and stored at 25 ± 2 ℃ |
| Maximum continuous charging power | 1P | (25±2)℃ |
| Maximum continuous Discharging power | 1P | (25±2)℃ |
| Discharging temperature range | -30~60℃ | N.A. |
| Charging temperature range | 0~60℃ | N.A. |
Battery Module
Battery module adopts3.2V/280ah lithium iron phosphate battery1P16S design ， form51.2V/280Ah ， total energy14.336kWh.At the same time, the internal collection harness and BMU are used to collect the voltage and temperature of the battery cell.
Sketch Map
The battery module parameters are listed below：
| No. | Item | Spec | Remark |
| 1 | Module Size | 435mm(W)*800 mm(D)*234mm( H) | ±2mm |
| 2 | Nominal Capacity | 280ah@1C,25℃ | Tested capacity≥98% ，qualified |
| 3 | Nominal Voltage | 51.2V (16cells) | Shipping capacity30%-40%SOC |
| 4 | Min Working Voltage | 43.2V | T＞0℃@cell 2.7V |
| 5 | Max Working Voltage | 58.4V | T＞0℃@cell 2.7V |
| 6 | Composition Way | 1P16S | |
| 7 | Rated Power | 14.336KWH | 25±2℃ |
| 8 | Weight | 110KG | |
| 9 | Max continuous Charging Current | 140A/0.5C | 20~35℃ , SOC：0~90% |
| 10 | Max pulse Charging current | 1C（ 30S） | 25~35℃ , SOC：0~80% |
| 11 | Max continuous Discharging Current | 140A/0.5C | 15~35℃ , SOC： 10~ 100% |
| 12 | Max Pulse Discharging Current | 1C（ 30S） | 20~35℃ , SOC：20~ 100% |
| 13 | Self-discharge Rat | <3%/month | New cell ，25±2℃ , 30%SOC After three months storage |
| 14 | Insulation Grade | ≥1000MΩ | Battery pack total positive, total negative to ground |
| 15 | IP20 | ||
| 16 | Cooling Type | Air cooling | |
| 17 | Charging high temperature protection | 45℃ | battery temperature |
| 18 | Discharging high temperature protection | 50℃ | battery temperature |
| 19 | Charging low temperature protection | 0℃ | battery temperature |
| 20 | Cycle Times | ≥6000 | battery temperature |
| 21 | Working Environment Temperature Range | 0～40℃ | It is prohibited to use beyond the scope, as it may cause damage to the battery and pose a safety risk |
| 22 | Storage Temperature Range | -30～45℃ | It is prohibited to use beyond the scope, as it may cause damage to the battery and pose a safety risk |
| 23 | Storage environment humidity（RH） | 5%～95% | It is prohibited to use beyond the scope, as it may cause damage to the battery and pose a safety risk |
| 24 | Working environment humidity（RH） | ≤85% | It is prohibited to use beyond the scope, as it may cause damage to the battery and pose a safety risk |
Battery Cluster
Battery Cluster: series of 14battery modules is one cluster, capacity:200.704kWh.
| List of equipment for clusters | ||
| No. | Equipment | Remark |
| 1 | Battery Module | 1P16S |
| 2 | Frame | 2 columns 8 layers |
| 3 | High Pressure Tank | Standard high pressure box |
| 4 | BMS | Three-level architecture |
| 5 | Connecting Copper bars | Series copper row in the battery cluster |
| 6 | BMS Communication Collection Harness | |
Sketch Map
No. | Item | Spec | Remark |
1 | Battery Rack | ||
2 | Nominal Capacity | 280ah@1C,25℃ | Tested capacity≥98% ，qualified |
3 | Nominal Voltage | 716.8V | Shipping capacity30%-40% |
4 | Working Voltage | 604.8V~784V | |
5 | Max continuous Charging Current | 140A@25℃ | |
6 | Max continuous Discharging Current | 140A@25℃ | |
7 | Nominal weight (single cluster) | About185 kg | |
8 | Nominal energy | 215.04kWh | 25℃@0.5c rated |
9 | *Insulation standard | Battery case insulation resistance＞ 1GΩ(1000VDC) | Refer to GB36276-2018 |
10 | *Pressure resistance standard | 3110VDC ，No breakdown or flash-over | Refer to GB36276-2018 |
11 | Maxi single-unit charging voltage | 3.65V | Any battery cell, beyond the range of use will damage the battery, and there is a safety risk |
12 | Single-unit min discharge voltage | 2.5V | Any battery cell, beyond the range of use will damage the battery, and there is a safety risk |
13 | Discharging over current protection | 145A@5S | interval＞ 10min Any battery cell, beyond the range of use will damage the battery, and there is a safety risk |
14 | Discharging over current protection | 45℃ | Battery temperature in the battery module |
15 | Discharging high temperature protection | 50℃ | Battery temperature in the battery module |
16 | Charging low temperature protection | 0℃ | Charging low temperature protection |
| 17 | Discharge low temperature protection | -20℃ | Discharge low temperature protection |
| 18 | Working Temperature Range | 0~40℃ | It is prohibited to use beyond the scope, as it may cause damage to the battery and pose a safety risk |
High Pressure Tank
The high-voltage box of the battery cluster is carefully designed for the number of access battery modules, with control devices, fuses and obvious power off devices, with fault alarm, fault protection, safety protection and other functions to ensure the electrical safety of the battery, and has the emergency stop function and the function of disconnecting the system step by step during maintenance.The effect of high altitude on switching disconnection and voltage resistance is considered in all special DC switches. The battery cluster high voltage control box is equipped with total positive contactors, total negative contactors, pre-charging circuits, fuses, moulded case circuit breakers, etc. All contactors should be able to accept the control of the battery management system.
Main electrical equipment of the high-voltage box
| List of equipment for clusters | ||
No | Electrical Equipment | Remark |
1 | moulded case circuit breaker | For the protection and emergency cutting-off of the entire circuit |
2 | DC contactor | Used to control circuit on/off |
3 | BCU | Control device |
4 | Connector | Power cable input / output |
5 | Pre-charging resistance | Precharge circuit |
6 | Current diverter | Current collection |
7 | Fuse | For the protection of the entire circuit |
Control the confluence cabinet 、distribution box
Cabinet body
1. The cabinet body is welded with high-quality cold-rolled steel plates, with a frame thickness of no less than 2mm and an internal sheet metal thickness of no less than 1.5mm.
2. The cabinet protection level is not lower than IP30。
3. The incoming and outgoing methods of the cabinet body are bottom in and bottom out, and the bottom adopts a detachable movable cover plate。
4. The cabinet design meets the requirements of natural ventilation, with good heat dissipation performance. The four corners of the cabinet top are equipped with detachable lifting rings and bases.
5. Cabinet color RAL7035, brow red white characters。
6. Bus cabinet size: based on actual conditions
Distribution box size ：based on actual conditions
Appearance diagram
Secondary circuit
1. The control loop adopts copper core flexible wire that meets the insulation requirements.
2. All lead joints shall be pre-insulated nose.
3. All terminals are under the Weidmuller or Phoenix brand.。
4. The panel, cabinet, and electrical equipment should be labeled according to the circuit requirements, and the label should be clear and not easy to fall off.
Fire Fighting System
The WZ-Q/Z-1230-6/1.6/170 perfluorohexaneketone fire detection tube fire extinguishing device is a temperature sensing and self starting fire extinguishing device that is pre-designed, assembled, and equipped with linkage control functions according to preset conditions, including perfluorohexaneketone storage containers and spray components. The WZ-Q/Z-1230-6-1.6/170 perfluorohexaneketone fire extinguishing device consists of a perfluorohexaneketone storage container, container valve, pressure signal transmitter, fire detection tube type initiator, perfluorohexaneketone fire extinguishing agent, pressure gauge, alarm, etc. The container stores
perfluorohexaneketone fire extinguishing agent
PCS（MPS0500）
Layout Scheme
System layout diagram (subject to final confirmation drawing)：
