The difference between a power battery and an energy storage battery

Introduction The difference between power batteries and energy storage batteries 1. Different application scenarios Power batteries are mainly used in new energy vehicles, electric bicycles, electric trains and other means of transportation , while energy storage batt

The difference between a power battery and an energy storage battery

1. Different application scenarios

Power batteries are mainly used for new energy vehicles, electric bicycles, electric trains and other means of transportation, while energy storage batteries are mainly used for solar energy production. , wind power generation, hydro power generation, etc. Batteries for electricity production and other renewable energy sources.

2. The lifespan is different.

Among current electric batteries, the life of ternary lithium batteries is generally 1,200 charge and discharge cycles, and that of lithium iron phosphate batteries is 2,000 cycles. Since energy storage batteries are charged and discharged more frequently, the service life requirements are higher. Generally, the lifespan of energy storage batteries is3,500 to 5,000 charge and discharge cycles. 3. Different volumes

Electric batteries are mainly used in new energy vehicles. The volume of one battery is equivalent to more than ten or twenty carpets stacked together. Generally speaking, energy storage batteries are composed of several battery modules to form a large module, and then the large modules are composed of several energy storage batteries with a volume close to a container.

4. Different cost structures.

In energy storage system, battery cost accounts for 60%, energy storage inverter cost accounts for 20%, energy management system accounts for 10% % and the battery management system accounts for 5%. In power batteries, the cost of battery cells alone accounts for up to 80%, and the remaining 20% ​​consists of battery management systems, structural partss, accessories, etc.

The standard for distinguishing lithium batteries from energy storage batteries, the main reason for the big price difference

Lithium battery classification: According to lithium battery Practical performance can be divided into ordinary energy storage capacity type and power flow type.

Based on the practical performance of lithium batteries, they can be divided into ordinary energy storage capacity type and power flow type. The power multiplier type has the characteristics of high density and high output power. High-rate batteries are increasing in size with the advent of hybrid electric vehicles. It requires the battery to store high kinetic energy, which can be applied to the distance of pure electric vehicles. It also has good characteristicseristics of output power and enters gasoline and electric hybrid mode in low power consumption mode.

Cylindrical batteries such as 18650 can be divided into 3C rate and 5C rate, which means that its own discharge current can reach 3 times and 5 times its own capacity. The discharge rate of high-quality 3C batteries produced by some manufacturers can even reach 5C, and those with a rate of 5C can reach 8C. The energy storage type has the characteristics of high density and large capacity and is generally used in electrical equipment that does not require high discharge current.

Lithium battery

Lithium battery is a battery that uses lithium metal or lithium alloy as anode material and uses solution non-aqueous electrolytic. The difference between lithium batteries and lithium-ion batteriesis that the first is a primary battery and the second is a rechargeable battery. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements, so lithium batteries have not been used for a long time.

With the development of microelectronic technology at the end of the 20th century, the number of miniaturized devices increased day by day, placing high demands on power supplies which then entered the production stage in large scale. practical use.part.

How many lithium batteries are needed to store 10gW of energy, which is equivalent to how many cars?

Hello! Your question is a bit broad. I make lithium batteries. The difference between power batteries and energy storage batteries:

ResInternal resistance of batteries is different for batteries with the same capacity, the internal resistance of power batteries is smaller than that of energy storage batteries.

The usage range is different. Power batteries are generally used in equipment requiring large current discharge (3C-5C), energy storage batteries are used on small current equipment (generally discharge range 0.5-1C)< /p >

The total battery capacity is different and batteries with the same capacity have different power. The weight of the battery will be heavier than that of the power storage battery (the design process is different)

The price is different, and the price of the power battery will be more than 1 .5 times that of the energy storage battery (determined according to different customer requirements)

To store 10 gW of energy, 10 TWh ofLithium batteries are needed, which is equivalent to 100,000 cars. According to official information, 1 GWh of energy storage is equivalent to around 10,000 vehicles. Assuming that the battery capacity of a vehicle is 100 kWh, which is commonly referred to as 100 kilowatt hours of electricity, 10 GWh of energy storage requires 10 TWh of lithium batteries, which is equivalent to 100,000. Vehicles.

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