The difference between power battery and energy storage battery and power tool battery

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1. The difference between power batteries, energy storage batteries and power tool batteries is that power batteries are mainly used for energy storage, with large capacity requirements, long life requirements, and low self-discharge. Power tool batteries have a small capacity and do not need to provide high power output; while energy storage batteries are mainly used to provide power and are required to output high power.


2. Energy storage batteries mainly refer to batteries used in solar power generation equipment, wind power generation equipment and renewable energy storage energy.


3. In most off-grid photovoltaic systems, the voltage and current generated by the arrangement of the photovoltaic cell (solar panel) array cannot be exactly the same as the load (electrical appliance). Especially when the natural conditions change, the light intensity changes in cloudy days, rainy days, and at night, the photovoltaic cells cannot provide full-load energy, which results in difficulties for the normal use of electrical appliances (loads). With batteries for energy storage and regulation of energy metabolism, photovoltaic systems equipped with energy storage devices can satisfactorily and stably provide electrical energy required for electrical appliances. Therefore, it is very necessary to use batteries to store energy in photovoltaic systems.


4. The power battery is the power source that provides the power source for the tool, and mostly refers to the battery that provides power for electric vehicles, electric trains, electric bicycles, and golf carts. It differs mainly from starter batteries used for car engine starting. Valve-sealed lead-acid batteries, open tubular lead-acid batteries and lithium iron phosphate batteries are mostly used.


5. The test and evaluation of power battery is very important in the development of pure electric vehicle industry, especially how to test and evaluate the performance of power battery pack. The research in this field at home and abroad has just started, and there are still many problems to be solved, specifically, including the following aspects.


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