The difference between a power cell and an energy storage battery and an electric tool battery
Batteries for power tools are mainly batteries used in power tools. The battery powered tools without wire supply are the first to use nickel cadmium batteries as the power source. With the development of battery manufacturing technology, lithium battery is the main current.
Energy storage batteries are mainly used in solar power generation equipment and wind power generation equipment as well as renewableEnergy savings; batteries for energy use. The common storage battery is lead-acid battery.Energy storage batteries are divided into the following three categories:1 exhaust energy storage lead-acid batteries - batteries with batteries for fluid removal and exhalation.2 VRLA batteries each battery is sealed but has a valve that allows the gas to overflow when the internal pressure exceeds a certain value.3 lead-acid batteries for colloidal energy storage - batteries for use with gelled electrolytes.Lead-acid batteries for energy storage must have the following characteristics1, the use of a wide range of temperature, generally required in the temperature of -30-60 degrees, the environment can operate normally.2, the low temperature performance of the battery is better, even in areas where the temperature is relatively low can also be used.3, the capacity of good consistency, in battery series and parallel use, to maintain consistency.4 good charging ability. In an unstable charging environment, there is a stronger charge acceptance capacity.
Using the same Ni oxide and nickel metal hydride batteries nickel cadmium batteries as the cathode, the hydrogen storage metal as anode, alkali (KOH) as the electrolyte, non normal use of NiMH batteries in general there are two types: overcharge and overdischarge. After charging the battery charging control is invalid or no proper method to control the process, cause when the battery is fully charged after not timely stop; discharge generally occurs in the series of small capacity battery pack, the other battery driven discharge occurred.A lithium battery is a battery made of lithium metal or lithium alloy as a negative electrode and using nonaqueous electrolyte solutions. The lithium battery in the recent ten years fast development, it has a long life cycle, light weight, low self discharge rate, high rated voltage, environmental protection and so on and supported by national policy, it will be the dominant trend of the future development of the power battery
The most fatal disadvantage of Ni Cd batteries is that if they are not handled properly during charging and discharging, serious memory effects will occur, which will greatly shorten service life. In addition, cadmium is toxic, and therefore, nickel cadmium batteries are not conducive to the protection of the ecological environment. A number of disadvantages have made nickel cadmium batteries virtually eliminated from the range of digital device batteries.
Power battery mainly includes lead-acid battery, Ni Cd battery, Ni MH battery and lithium battery four kinds.Lead acid battery (VRLA), the electrode is mainly made of lead and its oxide, and electrolyte is a kind of accumulator of sulfuric acid solution. It is the main power battery in the market at present, but it is not recognized by the market because of its high pollution, large volume and heavy weight.
