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Product overview
The energy storage charging system is a device that can convert electrical energy into chemical energy for storage, and convert chemical energy into electrical energy when needed. It is mainly composed of energy storage battery, charge controller, inverter and other parts, which can realize the functions of peak cutting and valley filling, emergency backup, energy optimization and so on.
Technical Requirements
1. Standard for Electrical Design of Civil Buildings GB 551348-2019
2. General Code for Electrical and Intelligent Building (GB 55024-2022)
3. Safety Regulations for Electrochemical Energy Storage Power Station (GB/T 42288-2022)
4. Technical Specification for Monitoring System of Electrochemical Energy Storage Power Station (GB/T 42726-2023)
5. Code for Design of Electric Vehicle Charging Station GB 50966-2014
6. Conductive Charging System for Electric Vehicles Part 1 General Requirements GB/T 18487.1-2015
Energy storage charging system use
The energy storage charging system can be applied to various parking lots: public parking lots, corporate parking lots, residential parking lots, industrial park parking lots, high-speed service area parking lots, etc.
At present, these parking lots have been put into operation, but there is no power resource to provide power supply, so these parking lots need to provide power from nearby power distribution rooms before installing charging piles. However, the design capacity of the power distribution room is limited, and the charging system is overloaded. Therefore, the charging system can be designed, installed and operated only after the power supply department has declared the capacity increase and installed the charging special transformer.
The use of newly installed transformer power supply charging system, running in the parking lot, will cause two problems: the first problem, increase the power supply declaration cycle and the actual installation cycle of the transformer and procurement costs. Sometimes the grid capacity is insufficient and may not provide storage for installed transformers. The second problem is that the charging pile system of the fusion installation transformer can only accept the time-of-use electricity price of the power grid company, especially the electricity price of the national grid during the two peak periods of the day is relatively high, which is around 1.2 yuan, plus the charging service fee of 0.4 yuan, resulting in the charging electricity price of electric vehicles exceeding 1.6 yuan/degree. At the same time charging pile operating units, the return cost cycle is relatively long. To solve the above two problems, energy storage is needed. On the one hand, grid connection is carried out from the power distribution room and low-voltage side of nearby units, and energy storage is carried out by using the allowance of night load redundancy. At the same time, it is not necessary to apply to the power supply bureau for capacity increase and design and installation of transformers. At the same time, it also increases the income of charging power for the operating units and recovers the operating costs as soon as soon as possible.
Working principle of energy storage charging system
Charging process: When there is excess power in the grid, the energy storage battery is charged by constant current, constant voltage, floating charge and other charging methods through the charge controller to convert the electrical energy into chemical energy and store it.
Discharge process: When electric energy needs to be used, the energy storage battery converts chemical energy into alternating current through the inverter and supplies it to the load.
Technical features
High efficiency and energy saving: advanced charging control algorithm and inverter technology are adopted to improve the energy conversion efficiency of the system.
Safe and reliable: High-performance lithium-ion batteries and advanced system management functions are used to ensure the safe operation of the system.
Flexible and adjustable: The energy storage capacity and output power can be adjusted according to actual needs to meet the application requirements of different scenarios.
Environmental protection and energy saving: reduce dependence on traditional energy and reduce energy consumption and environmental pollution by cutting peaks and filling valleys and energy optimization.
Selection scheme
The capacity of energy storage equipment needs to be determined according to the number of charging piles and charging requirements. Assuming that there are 10 fast-charging piles and 5 slow-charging piles, the power of each fast-charging pile is 120kW, and the power of each slow-charging pile is 30kW. It is estimated that 100 vehicles will need to be charged every day, and the average charging time for each vehicle is 1 hour. Based on these data, it can be calculated that the total charging power required per day is (10 * 120kW 5 * 30kW)* 1h = 1350kWh. Considering a certain margin and loss, a 2MWh energy storage system can be selected to meet the demand.
The battery type should be selected for high energy density, long life and high safety batteries, such as lithium ion batteries. Lithium-ion batteries have the advantages of high energy density, long cycle life and low self-discharge rate, and are suitable for large-scale energy storage systems.
The type of charging pile should be determined according to actual needs, such as fast charging pile or slow charging pile. Fast charging piles are suitable for scenarios that require fast charging, while slow charging piles are suitable for vehicles parked for a long time. According to the actual scene and user needs, the proportion of fast-filling piles and slow-filling piles can be comprehensively considered.
Supporting equipment includes transformers, power distribution cabinets, etc., to meet the needs of the system. The transformer converts the grid voltage into a voltage suitable for energy storage equipment and charging piles, and the power distribution cabinet is used to distribute and manage the electric energy.
The system control mode can be centralized control or remote control to realize the monitoring and management of the energy storage charging system. Centralized control enables real-time monitoring and management of the system, while remote control enables remote operation and management via the Internet.
Safety measures should consider the requirements of fire prevention and explosion prevention. Take necessary safety measures in the energy storage charging system, such as installing fire alarms and explosion-proof equipment, to ensure the safe operation of the system.
Product Picture
Energy storage charging system
AC/DC charging pile
Service Telephone
Telephone:0551-65317588,65323322
Fax: 0551-65313339
E-mail:hflx88@163.com
Address:No.61, Yulan Avenue, High-tech Zone, Hefei City
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