New energy storage battery technology and urban electric vehicle storage capacity charging solution

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

At present, my country's electric vehicle industry has developed very rapidly, and the construction of charging stations associated with interest is subject to the limited construction of urban land and cannot be built. Without utilization of urban parking spaces and urban distribution network capacity, limited charging station always restricts the development of electric automotive industry, in order to solve this problem, Wang Wei, general manager of Ningde Times New Energy Technology Co., Ltd.

, recently Made the theme speech of "new energy storage battery technology and urban electric vehicle storage charging solution". CATL Ningde Times New Energy was established in Ningde, Fujian in 2011. In 2016, the lithium-ion battery shipments were 6.

8GWH, ranking third in the world. The company now dominates two batteries, one is the lithium iron phosphate ion battery, and the other is a ternary battery. The company's target customer, part of the automotive industry, the other part is the energy storage battery.

The electric car is part of almost all mainstream cars and foreign countries such as BMW, the public, Mercedes-Benz, French Peugeot, Nissan, etc. in Japan. In terms of storage, the company has participated in the 2011 Zhangbei National Storage Demonstration Project, including the largest highlights of the domestic storage, 18 MW in Golmud, also participated in it.

Ningde Times's new energy has undertaken a large-scale energy storage application project during the "13th Five-Year Plan" period last year. It has undertaken such key projects. The goal is to reduce the cost of electricity of lithium-ion battery energy in 2020.

Yuan, battery cycle life exceeds 10,000 times, so that the electricity cost of the battery will be less than 0.2 yuan, and the universal application of the energy storage will basically become a reality. Ningde Times New Energy Related to the application of energy storage projects in urban charging is the micro-grid, and the most important application of the micro-grid is the energy storage and charging station.

The company has made related demonstration projects in Beijing: Beijing Guomao Building, The energy storage charging station project, first, the intermittent problem of electric vehicle charging, refers to the charging task is intermittent. Second, the energy storage system can move in the field when there is no electric vehicle charging, reducing the owner's investment. Third, the energy storage system can be used as an emergency power supply and reserve power supply in the building.

Fourth, it can be used as a capacity of electric power, during the summer or power peak, such as power grid load is large, can solve the capacity of capacity by energy storage. The current electric vehicle has a slow development. The reason for the development of electric vehicles is relatively slow.

The charging station has a large investment, and the construction is slow, a charging station investment, equipment investment generally accounts for 30% of total investment, including Electrical facilities and land account for a large proportion of charging station investment. Many of the company has been built, and the current charging station is important is the bus charging station. Because its charging power is relatively large, it is more regular, the utilization is also high.

And other charging stations have poor profitability. It is important to have the following reason: 1. The number of electric vehicles is relatively small, and the charging task has intermittent.

Second, in order to prevent electric vehicles from concentrating on charging the impact on the grid, the load rate of the charging station is low. Third, the charging station service fee is not clear in different cities, and the non-supervised charging parking space is occupied by other vehicles. The energy storage charging station realizes the electricity increase in electricity at the peak of electricity, and the energy storage stadium is realized in the peak of electricity, and the electricity expenditure of the electric peak is reduced.

Take the situation in the summer of Beijing as an example. Beijing has two peaks every day. For a total of 8 hours, the energy storage system can be fully charged at night.

When the first use of electricity peak is coming, in the second When charging when Ping Peak, the second power peak is 6 o'clock in the evening, and it can also be discharged. The difference between lithium battery and lead-acid battery energy storage is that the cycle life of the lithium ion battery is longer, and two peaks can be made one day, so that investment recycling can be greatly accelerated. Second, my country's urban charging facilities planned to build charging facilities as the main body in residents' residential parking space, but at night, the 18-point -21 point after home delivery is another peak of the city's electricity.

At this time, the electric car is concentrated. The power supply of the trip to the residential area is caused, and the people resentful, so it is also necessary to use the energy storage system to smoothing the peak to ensure safety. Third, the city's electricity price is charged according to Feng Valley, and the peak time charging will add electricity expenditure.

The energy storage charging station is charged with low-cost electricity at night. paradox. First, use the parking space of the existing urban building, saving the cost of urban land investment costs.

Second, use the existing urban building's power grid, saving the supply and distribution investment and power monitoring management investment of charging stations. Third, there is energy storage system support, even if multiple electric vehicles concentrate fast charging, the energy storage system can smooth the current spikes, guarantee power supply; and storage system support, can build multi-establish DC fast charge-based charging Station, fast charge improves the turnover utilization of charging station equipment, which is conducive to recovering investment as soon as possible. 4.

In the first few years, the electric car charging task will be unpleasant in the first few years. When the energy storage system is idle when the charging station is idle, the building power grid will be powered by the power network. For other electricity, such as lighting on the building power bus, reduce the electricity expenditure of the building.

Therefore, the investment recovery period of the energy storage charging station does not rely on whether the charging task is full, the electric car does not affect the revenue of the storage capabilities. Because the company gives the battery to the battery, from the second half of 2017, a large number of electric vehicles equipped with 40 degrees, 50 degrees or more, the battery life will exceed 300-400 kilometers, if still used the previous 3 kW or 7 kW slow recharge, charging time will be too long, so fast charge is an inevitable trend in the future. If a large number of fast charge is used, the impact on the grid is large, so the energy storage is a good solution.

In addition, the energy storage can also solve the problem of unpleasating electric vehicles, and save investment through electricity transfer. According to the company's storage energy charging station in the city, the storage charging station of the Beijing Guomao Building is divided into four parts, one is the electricity access, one is the energy storage power station system, battery cabinet and power supply, charging station monitoring Management system, as well as charging piles, actually structure is relatively simple. This is the problem of lacking the parking space with a three-dimensional parking garage.

This is the most common model of the energy storage. It is 0.4 yuan in Beijing.

It is 0.4 yuan in Beijing. "Valley" is the best power supply for electric vehicle batteries.

In 2013, our country has 11 trillion power generation capabilities. It actually applied only 53 trillion. To make a calculation, according to the ordinary consumers of electric vehicles, 300,000 kilometers, electric vehicles 0.

8 degrees / km, each car charges about 5400 degrees a year, even 2020 million electric cars, annual consumption The power is only 1 billion, completely within the support of the grid, the actual impact on the grid is smaller, so to solve the impact of centralized charging on the grid. The energy storage power system is actually a simple design. Now the integration of the energy storage battery can now do a 20-time container, or a parking space size, approximately 1.

7 megawatts, it is 1700 degrees, if a building takes three parking spaces, you can To achieve 5 megawatto, this kind of economic benefits are better. The general energy storage battery cabinet system, currently this system is a battery in time. Now there is a 120-safe, two batteries in 240 hours, basically cycle life, this battery cycle life is 6,000 times, 100 % Of the DOT, the next company will launch more than 10,000 times, may exceed 12,000 long life batteries, after 120,000 cycles, the battery can be used, only the capacity drops to 80% of the nominal capacity, from this It seems that this device is very beneficial to do it.

The energy storage system is the core of the energy Internet, which is the previous pumping energy storage. Electricity's shunt is not saving electricity, no power, this is not existed. The energy storage is important on the power generation side, the electricity side, and the user side has a wide range of applications.

In 2011, the company did 4 megawatts, 16 megawatts in 2011, and have been run for 6 years. Now use the effect is still better. Industrial park with container type energy storage system.

A R & D center in Shanghai Old Town, the light reservoir project of the BMW R & D center, the roofed photovoltaic, office air conditioner, lighting power and server electricity, and electric vehicle charging. Qinghai smart micro. Household energy storage, in Germany, more in Japan.

Household energy storage. Is the energy storage system of the base station, my country Mobile Base Station. Container-type mobile energy storage, 2012 Ningde New Energy and Electric Academy cooperated with emergency power supply, can replace diesel generators.

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