What are the advantages and disadvantages of power batteries and energy storage batteries?
Main disadvantages: 1. Normal operating temperature range -15-40 ° C, poor high temperature performance; 2. The working voltage is low, and the operating voltage range is 1.0 ～ 1.4V; 3. The price is more expensive than the lead -acid battery and nickel -metal hydride battery, but the performance is worse than the lithium ion battery. Due to serious domestic air pollution, domestic fuel cell vehicles have a short life. Scientists believe that the performance of lithium -air batteries is 10 times that of lithium ion batteries and can provide the same energy as gasoline. Battery energy storage high -power occasions are generally used for lead -acid batteries, which are mainly used for storage of emergency power, battery vehicles, and power plants. You can also use dry batteries that can be charged repeatedly: such as nickel -metal hydride batteries, lithium -ion batteries, etc.
Battery energy storage high -power occasions are generally used for lead -acid batteries, which are mainly used for storage of surplus energy of emergency power, battery cars, and power plants. You can also use dry batteries that can be charged repeatedly: such as nickel -metal hydride batteries, lithium -ion batteries, etc.
Energy storage mainly refers to the storage of electrical energy. Energy storage is also a term in petroleum storage, representing the ability to store oil and gas in reservoirs. Energy storage itself is not an emerging technology, but from an industrial perspective, it has just appeared and is in its infancy.
So far, China has not reached the extent that the United States and Japan will treat energy storage as an independent industry and introduce a special support policy, especially under the premise that the lack of energy storage and payment mechanism, the energy storage industry The commercialization model has not yet taken shape.
Battery energy storage high -power occasions are generally used for lead -acid batteries, which are mainly used for storage of surplus energy of emergency power, battery cars, and power plants. You can also use dry batteries that can be charged repeatedly: such as nickel -metal hydride batteries, lithium -ion batteries, etc. This article follows the editor to learn about the advantages and disadvantages of nine battery energy storage.
The advantages and disadvantages of battery energy storage (Analysis of nine types of energy storage batteries)
1. Lead acid battery
Main advantages:
Obtained, the price is relatively low;2. High-power discharge performance is good;
3, the temperature performance is good, you can work in the environment of -40 ～+60 ℃;
] 4. Suitable for floating charging, long service life, no memory effect;
5. Waste batteries are easy to recover, which is conducive to protecting the environment.
Main disadvantages:
1. Lower energy than energy, generally 30-40Wh/kg;
2. The service life is not as good as CD/NI batteries;
3. The manufacturing process is easy to pollute the environment and must be equipped with three waste treatment equipment.
Second, nickel -metal hydride battery
Main advantages:
1. Compared with lead -acid batteries, energy density has greatly increased, weight energy density is 65WH/kg, volume energy density has all available energy density density. Increasing 200Wh/L;2. High power density, which can be charged large current;
3, low temperature discharge characteristics; 1000 times);
5. Environmental protection without pollution;
6. Technology compare lithium -ion batteries to mature.
Main disadvantages:
1. The normal operating temperature range -15 ~ 40 ° C, poor high temperature performance;
2. Low operating voltage, working voltage range 1.0 ～ 1.4 V;
3. The price is more expensive than the lead -acid battery and nickel -metal hydride battery, but the performance is worse than the lithium ion battery.
3. Lithium ion battery
Main advantages:
1. High energy than energy;
2. High voltage platform;
3. Good circulation performance;
4. No memory effect;
5. Environmental protection and pollution -free; currently one of the best potential electric vehicle power batteries.
Fourth, Super Capacitor
Main advantages:
1. High power density;
2. Short charging time.
Main disadvantages:
The energy density is low, only 1-10Wh/kg, and the mileage of the super capacitor is too short to be used as the mainstream power supply of electric vehicles.
The advantages and disadvantages of battery energy storage (Analysis of nine types of energy storage batteries)
5. Fuel battery
Main advantages:
, The mileage of the car is long;2. The power density is high, which can be charged large current;
3, environmental protection, no pollution.
Main disadvantages:
1. The system is complex, the technical maturity is poor;
2. There are high requirements for sulfur dioxide. Due to serious domestic air pollution, domestic fuel cell vehicles have a short life.
6. Sodium sulfur battery
Advantage:
1.Quantity (theory 760WH/KG; Actual 390WH/KG);
2. High power (the density of the discharge current can reach 200 ～ 300mA/CM2);
3. Fast charging speed (full 30 minutes );
4. Life expectancy (15 years; or 2500 ~ 4500 times);
5. No pollution, recycling (NA, nearly 100%); 6. No none Self -discharge phenomenon, high energy conversion rate;
Insufficient:
1. The working temperature is high, and its working temperature is 300-350 degrees.
2. Excessive price, 10,000 yuan/per degree;
3. Poor safety.
Seven, liquid flow battery (钒 battery)
Advantages:
1. Safe, deep discharge;
Unlimited size;3. There is a large charging and discharge rate;
4, long life, high reliability;
5, no emissions, small noise; [ 123]
6. Fast charge and switching, only 0.02 seconds;7. The site selection is not limited by the region.
Disadvantages:
1. Cross pollution of positive and negative electrolytes;
2. Some need to use expensive ion exchange membranes;
3 The volume of the two solutions is large, lower than the energy;
4. The energy conversion efficiency is not high.
Eight, lithium air batteries
Fatal defects:
Lithium lithium oxide (li2O) of solid reactions will be accumulated in the positive electrode, causing the contact between the electrolyte and the air to be blocked , Resulting in stopping discharge. Scientists believe that the performance of lithium -air batteries is 10 times that of lithium ion batteries and can provide the same energy as gasoline. Lithium air batteries absorb oxygen charging from the air, so this battery can be smaller and lighter. Many laboratories around the world are studying this technology, but if there is no major breakthrough, it may take 10 years to achieve commercial use.
9. Lithium sulfur batteries (lithium sulfur batteries are a high -capacity energy storage system with prospective development prospects)
Advantages:
The energy density can reach 2600Wh/kg;
2. The cost of raw materials is low;
3. Energy consumption is small;
4, low toxic.
Although the research of lithium sulfur batteries has undergone decades and has achieved many results in the past 10 years, there is a lot of distance from the actual application.
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