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

1. The difference between power battery, energy storage battery and power tool battery is that power battery is mainly used for energy storage, requiring large capacity, long service life and low self-discharge. The battery capacity of electric tools is not large, so it is not necessary to provide high power output; Energy storage battery is mainly used to provide power and needs large power output.

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

3. In most off-grid photovoltaic systems, the voltage and current generated by the array arrangement of photovoltaic cells (solar panels) cannot be completely consistent with the load (electrical appliances). Especially when the natural conditions change and the light intensity changes in cloudy days, rainy days and at night, photovoltaic cells cannot provide enough energy, which brings difficulties to the normal use of electrical appliances (loads). By storing energy and regulating its energy metabolism, the photovoltaic system with energy storage device can provide the required electric energy for the electrical equipment satisfactorily and smoothly. Therefore, it is necessary to use storage batteries to store energy in photovoltaic systems.

4. Power battery is the power supply that provides power source for tools, mostly referring to batteries that provide power for electric cars, electric trains, electric bicycles and golf carts. It is mainly different from the starting battery used for starting automobile engines. Lead-acid batteries with sealed valve ports, open-tube lead-acid batteries and lithium ferrous 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, including the following aspects.