The Appearance and Application of EV Charging Stack

EV charging stacks are a solution to the power distribution problem.

1. The Appearance of the EV Charging stack

Charging piles are scattered in the commercial power network in a disorderly manner, and the power difference is large and difficult to manage. In addition, the battery capacity and power requirements of plug-in hybrid and pure electric vehicles are different, which will cause some charging problems. When a charging pile with a large output power is used to charge a car with a small battery capacity, charging capacity will be wasted and the equipment utilization rate will be low. When a charging pile with a small output power charges a car with a large battery capacity, the charging capacity will be insufficient, the charging time will be long, and the need for fast charging cannot be met. The appearance of charging piles solves this problem very well.

2. What is Charging Stack

Unlike the integrated charging pile, the charging pile comprises a charging cabinet and some charging terminals. It is equivalent to bringing together the charging modules of many charging piles and having many guns exposed to the outside world at the same time. When the charging modules in the charging pile convert alternating current into direct current, it will flexibly allocate the number of charging modules according to the actual needs of the car, instead of having a fixed power like the original charging pile. The following are advantages of the EV charging stack.

EV charging cabinet (Power unit)
EV charging cabinet (Power unit)
EV charging post(Output unit)
EV charging post(Output unit)
2.1 Less noise

Due to the heat dissipation requirements of the charging pile, the cooling fan will cause noise. For the charging pile, the cooling fan is configured in the charging cabinet, which is larger in size and the fan blades can be larger. Therefore, the fan blade speed is not required to be high and the noise will be less.

2.2 Flexible power allocation

The charging pile has better flexibility and compatibility and can meet the charging needs of electric vehicles with different power requirements.

2.3 Installation is easier

The installation of the charging pile is simpler than the traditional multiple integrated charging piles, does not require civil engineering, and the number and location of the power supply units can be flexibly adjusted.

The Application of Bluesky EV Charging Stack

Bluesky EV charging stack features flexible power distribution, high efficiency, and high reliability.

Take Bluesky 360Kw EV charging stack with six outlets, for example, it can charge six electric vehicles at the same time at 60kw. It can also charge two Volkswagen ID.4 at 100kw and the remaining 160kw will intelligently distributed to the rest 4 outlets to charge 4 other electric vehicles with a small battery capacity like BYD seagull(30.08kWh). But if there are six separate 60kw charging piles, it can only charge Volkswagen ID.4 at 60kw. This is what is mentioned above: this charging limits the charging efficiency.

The second scenario is that five electric charging stations that charge electric cars with a small battery capacity. Then the left one can only charge Volkswagen ID.4 at 60kw. This is what we mentioned above: charging capacity will be wasted and the equipment utilization rate will be low. But with the Bluesky EV charging stack, the power will not be limited to electric cars with a small battery capacity but will be flexibly distributed to other electric vehicles that need fast charging.

Power distribution in charging stack
Power distribution in the charging stack
Flexible power output of DC chargers
Flexible power output of DC chargers

3. Details of Bluesky EV Charging Stack

3.1 Specification of Bluesky EV charging stack
Bluesky EV Charging Stack
Model BSEC-360 BSEC-480 BSEC-720 BSEC-360
Use environment 360kW 480kW 720kW 360kW
Maximum outlets 6 8 12 1
Output capacity of each route
  • 20-120Kw adjustable
  • 20-120Kw adjustable
20-120Kw adjustable 20-120Kw adjustable
Input voltage range 260V~530V(260V~304VAC, output power derating 50%)
Current share precision <3%
Power factor >0.99
Humidity <95%, non-condensing
Storage temperature -40℃ to +70℃
Altitude <2000Mtr.
Frequency 50Hz or 60Hz
Voltage 200Vdc-1000Vdc
Current regulation accuracy <1%
Voltage regulation accuracy <0.5%
Current share precision <3%
Overall efficiency >95%
Output current 0~200A air cooled 0~500 air cooled
Communication interface Ethernet/Wifi/4G
Acoustic noise (dB) ≤60dB
Communication Protocols OCPP1.6J
Protection degree DC power stack IP55(outdoor) IP30(indoor)
Charge post IP55(outdoor)
3.2 Features of Bluesky EV charging stack
  •  Flexible multiple protocol designed: CCS, CHAdeMO, GB//T
  • Modular design, power stack up to 360~500kw
  • Distance between power stack and charge posts up to 150m
  • Supports CCS connector up to 500A liquid-cooled cables.
  • 7-inch LED/LCD screen to display information in real-time, easy operation, and humanized user interface

Conclusion

To avoid the waste of power and long queueing, the Bluesky EV charging stack is a great solution, and stay tuned for more updates on our development of technology!

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