One. The power battery mainly includes lead acid battery, nickel cadmium battery, Ni-MH battery and lithium battery .
n Lead acid battery (VRLA), the electrode is mainly made of lead and its oxide, and the electrolyte is a kind of battery in the sulfuric acid solution. It is the main power battery in the market, but because of its high pollution, large volume weight and other defects, it is gradually not recognized by the market.
n The most fatal disadvantage of Ni-Cd battery is that if it is mishandled during charging and discharging, there will be a serious "memory effect", which will greatly shorten the service life. In addition, cadmium is toxic, so Ni-Cd battery is not conducive to the protection of the ecological environment. Many shortcomings make nickel cadmium battery basically eliminated the application range of digital device battery.
n Ni-MH battery uses the same Ni oxide as Ni-Cd battery as the positive electrode, the hydrogen storage metal as the negative electrode and the lye (mainly KOH) as the electrolyte. The abnormal use of Ni-MH battery generally has two situations: over-charge and over-discharge. Over-charge is usually controlled during battery charging failure, or there is no appropriate way to control it, resulting in the battery does not stop in time when the battery is fully charged. The over-discharge usually occurs in a series battery pack with smaller capacity, and it is over-discharged by other batteries.
n Lithium battery is a kind of battery which is made of lithium metal or lithium alloy as negative electrode and uses non water electrolyte solution. Lithium battery has been developing rapidly in the past ten years. It has the advantages of long cycle life, light weight, low self discharge rate, high rated voltage, environmental protection and no pollution. It is supported by the national policy. It will be the leading trend of the development of power battery in the future.
Two. Energy storage battery mainly refers to the use of solar power and wind power equipment and renewable energy.
The battery for energy saving energy. The common storage battery is lead-acid battery.
The storage battery is divided into the following three categories:
l The lead-acid battery of the exhaust gas storage battery cover has a battery that can make up the liquid and precipitate the gas.
l A lead-acid battery for valve controlled energy storage - each battery is sealed, but it has a battery that allows a valve to overflow when the internal pressure exceeds a certain value.
l A lead-acid battery for colloidal energy storage - the use of a battery with colloidal electrolytes.
The lead-acid battery for energy storage must have the following characteristics:
l The use of a wide range of temperature, generally required in the temperature environment of between -30°C-60°C degree can operate normally.
l The battery has a better low temperature performance and can be used even if the temperature is low.
l The capacity consistency is good, and it is consistent in the series and parallel use of the battery.
l The charging capacity is good. In an unstable charging environment, it has a stronger charging capacity.
l Long life, reduce maintenance and maintenance costs, reduce overall investment in the system
Three. the electric tool battery is mainly used for batteries on electric tools. The battery electric tool with the nickel cadmium battery as the power source and the power line without the power supply first appeared. With the development of battery manufacturing technology, lithium battery is the main type of battery.
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