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215 KWH Battery Energy Storage System (BESS) to Support Electric Vehicle DC Fast Charging Stations

This proposal outlines a comprehensive solution for deploying a 215 KWH Battery Energy Storage System (BESS) to power one or more Electric Vehicle (EV) DC Fast Charging stations. The primary objective is to create a more profitable, grid-friendly, and reliable charging infrastructure. By intelligently charging the BESS during off-peak hours and discharging it during peak demand periods, this system significantly reduces electricity costs, minimizes demand charges from the grid, and ensures a consistent power supply for EVs without requiring costly grid infrastructure upgrades.

Battery Compartment Specifications and Parameters

No. Tem Spec. Remark
1 Product Model TY-YL-215KWH  
2 configuration 240s1p  
3 Rated Energy 215kWh 100%DOD , 0.5P
4 Rated Voltage 768V  
5 Operating Voltage Range 691.2~844.8V For cell
2.5V~3.65V
6 Dimension 1350mm×1350mm×2020mm L×W×H, 20HQ
7 Mass ~2200kg  
8 standard charging method charge at a constant power of 0.5P until cell voltage reaches 3.55V, and finally charge at a constant power of 0.1P until cell voltage reaches 3.65V 25℃±2℃
9 standard discharging method Discharge at a constant power of 0.5P until cell voltage reaches 2.5V 25℃±2℃
10 Rated charge power 0.5P (50kW) According to
current map
(5.1 ~5.4)
11 Rated discharge power 0.5p (50kw) According to current map
12 Maximum Continuous Discharge Rate 50 kw  
13 short overload charging power 100kw (for 0.5p system) @60s According to
current map (5.1~5.4)
14 short overload charging power 100kw (for 0.5p system) @60s According to
current map (5.1~5.4)
15 short circuit current 142.28kA@12 rack
73.54kA@6 rack
13.12kA
@1 rack
16 operating ambient temp -30~55℃  
17 p level of cabin Bat. Room, p55
Electric room, p55
Chiller controller module, p55
 
18 Efficiency ≥93.7%@0.5p
≥95.2%@0.25p
 
19 nsulation standard ≥1000Ω/V Test voltage
2500VDC
20 withstand voltage 4500VDC, leakage current ≤5mA, no breakdown or flashover  
21 Cooling and heating type Liquid cooling / heating  
22 Refrigerating power 60kw @ Ambient temp 35℃ 55kw @ Ambient temp 45℃  
23 Heating power 27kw  
24 Auxiliary power supply 22.8kw@ Ambient temp 25℃ @0.5p
27.2kw@ Ambient temp 35℃ @0.5p
33.6kw@ Ambient temp 45℃ @0.5p
8.1kw@ Ambient temp 25℃ @0.25p
9.8kw@ Ambient temp 35℃ @0.25p
12.5kw@ Ambient temp 45℃ @0.25p
ncluding BMs
and cooling
system
25 Communication agreement CAN, Rs485, TCp/, p  
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