Electric vehicle energy storage mode challenges -Lithium - Ion Battery Equipment
As the number of electric vehicles continues to expand, electric vehicle energy storage is increasingly attracting industry attention. Electric vehicles can also be regarded as distributed energy storage facilities, which can be combined with distributed energy, renewable energy, etc. to form a micro-grid system, and can also be applied to power demand response to adjust demand for real-time charging and discharging changes according to system flexibility.
Concept and current situation of vehicle electric energy storage
As the proportion of renewable energy power generation continues to increase, the development of energy storage technology will be the fundamental way to make up for the lack of flexibility in the power system. However, the installed energy storage capacity in my country is less than 1.5% of the national installed power generation capacity. In addition, domestic natural gas power generation and storage-type hydropower Such traditional peak shaving resources are scarce, and limited pumped storage resources cannot meet the huge demand for clean energy transformation in the future. Although electrochemical energy storage technologies (such as lithium-ion batteries, flow batteries, etc.) have been developed to some extent in recent years, their installed capacity only accounts for less than 1% of the total installed capacity of energy storage, which is not enough to substantially fill energy storage in a short period of time. supply gap.(Lithium - Ion Battery Equipment)
Electric vehicles are a strategic emerging industry to realize the transformation of my country's transportation energy and catch up with the automobile industry. my country has carried out research and development of key technologies for electric vehicles and implemented commercialization support policies earlier, which has effectively promoted the rapid development of my country's electric vehicle industry. In 2017, the national electric vehicle sales reached 777,000, and the cumulative promotion volume exceeded 1.8 million, accounting for more than half of the global electric vehicle market. At present, Germany, France, Britain, Norway, the Netherlands, India and other countries have proposed the goal of withdrawing fuel vehicles. The implementation of the "Measures for Parallel Management of Average Fuel Consumption of Passenger Vehicle Companies and New Energy Vehicle Credits" also means that transportation electrification has become an irreversible trend.
As the number of electric vehicles continues to expand, electric vehicle energy storage is increasingly attracting industry attention. Electric vehicles can also be regarded as distributed energy storage facilities, which can be combined with distributed energy, renewable energy, etc. to form a micro-grid system, and can also be applied to power demand response to adjust demand for real-time charging and discharging changes according to system flexibility. The scale of regulation after the popularization of electric vehicles is very considerable. Combined with advanced power electronic communication control technology, reasonable layout of charging and discharging facilities and guiding electricity price policies, electric vehicles have great application potential in improving the reliability and flexibility of power system operation.
Foreign research on vehicle electric energy storage started earlier. Kempton and Tomic of the University of Delaware in the United States compared the development scale of the US power system and the transportation sector earlier and found that if there are a quarter of the number of vehicles in the US transportation sector If it is an electric vehicle, the total charging/discharging power of the electric vehicle exceeds the total installed power generation capacity in the United States. The study further found that since the electric vehicle was designed to realize the instantaneous power adjustment capability for the change of road conditions, the electric vehicle also fully meets the requirements of the response time and the ramp rate in the auxiliary service of the power system. In addition, electric vehicle V2G hardware investment costs are relatively limited.
The most important factor limiting its promotion is the high battery cycle life loss during its operation. Kempton further analyzed the feasibility of three types of electric vehicles, namely, pure electric vehicles, plug-in hybrid electric vehicles and fuel cell vehicles, in four types of electricity market services: base load power generation, peak load power generation, reserve capacity and system frequency regulation. The conclusion of the study is that different types of electric vehicles (pure electric vehicles, plug-in hybrid electric vehicles, and fuel-powered cell vehicles) are suitable for different types of auxiliary services, and although the economy is different, there is no insurmountable technical obstacle.
Concept and current situation of vehicle electric energy storage
As the proportion of renewable energy power generation continues to increase, the development of energy storage technology will be the fundamental way to make up for the lack of flexibility in the power system. However, the installed energy storage capacity in my country is less than 1.5% of the national installed power generation capacity. In addition, domestic natural gas power generation and storage-type hydropower Such traditional peak shaving resources are scarce, and limited pumped storage resources cannot meet the huge demand for clean energy transformation in the future. Although electrochemical energy storage technologies (such as lithium-ion batteries, flow batteries, etc.) have been developed to some extent in recent years, their installed capacity only accounts for less than 1% of the total installed capacity of energy storage, which is not enough to substantially fill energy storage in a short period of time. supply gap.(Lithium - Ion Battery Equipment)
Electric vehicles are a strategic emerging industry to realize the transformation of my country's transportation energy and catch up with the automobile industry. my country has carried out research and development of key technologies for electric vehicles and implemented commercialization support policies earlier, which has effectively promoted the rapid development of my country's electric vehicle industry. In 2017, the national electric vehicle sales reached 777,000, and the cumulative promotion volume exceeded 1.8 million, accounting for more than half of the global electric vehicle market. At present, Germany, France, Britain, Norway, the Netherlands, India and other countries have proposed the goal of withdrawing fuel vehicles. The implementation of the "Measures for Parallel Management of Average Fuel Consumption of Passenger Vehicle Companies and New Energy Vehicle Credits" also means that transportation electrification has become an irreversible trend.
As the number of electric vehicles continues to expand, electric vehicle energy storage is increasingly attracting industry attention. Electric vehicles can also be regarded as distributed energy storage facilities, which can be combined with distributed energy, renewable energy, etc. to form a micro-grid system, and can also be applied to power demand response to adjust demand for real-time charging and discharging changes according to system flexibility. The scale of regulation after the popularization of electric vehicles is very considerable. Combined with advanced power electronic communication control technology, reasonable layout of charging and discharging facilities and guiding electricity price policies, electric vehicles have great application potential in improving the reliability and flexibility of power system operation.
Foreign research on vehicle electric energy storage started earlier. Kempton and Tomic of the University of Delaware in the United States compared the development scale of the US power system and the transportation sector earlier and found that if there are a quarter of the number of vehicles in the US transportation sector If it is an electric vehicle, the total charging/discharging power of the electric vehicle exceeds the total installed power generation capacity in the United States. The study further found that since the electric vehicle was designed to realize the instantaneous power adjustment capability for the change of road conditions, the electric vehicle also fully meets the requirements of the response time and the ramp rate in the auxiliary service of the power system. In addition, electric vehicle V2G hardware investment costs are relatively limited.
The most important factor limiting its promotion is the high battery cycle life loss during its operation. Kempton further analyzed the feasibility of three types of electric vehicles, namely, pure electric vehicles, plug-in hybrid electric vehicles and fuel cell vehicles, in four types of electricity market services: base load power generation, peak load power generation, reserve capacity and system frequency regulation. The conclusion of the study is that different types of electric vehicles (pure electric vehicles, plug-in hybrid electric vehicles, and fuel-powered cell vehicles) are suitable for different types of auxiliary services, and although the economy is different, there is no insurmountable technical obstacle.
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