| Difference between power battery and storage battery and power tool battery |
| A. Power batteries mainly include lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries and lithium batteries. Lead-acid battery (VRLA), the electrode is mainly made of lead and its oxide, and the electrolyte is a kind of battery of sulfuric acid solution. It is currently the main power battery in the market, but due to its high pollution, large volume and other defects, it is gradually not recognized by the market. The most deadly disadvantage of NiCd batteries is that if they are handled improperly during the charging and discharging process, serious "memory effects" will occur and the service life will be greatly shortened. In addition, cadmium is toxic, so nickel-cadmium batteries are not conducive to the protection of the ecological environment. Numerous drawbacks have made nickel-cadmium batteries have basically been eliminated from the application of digital device batteries. Nickel-metal hydride batteries use the same Ni oxide as nickel-cadmium batteries for the positive electrode, hydrogen storage metal as the negative electrode, alkali (mainly KOH) as the electrolyte, non-normal use of nickel-metal hydride batteries generally have two situations: overcharge and over Discharge. Overcharging is generally a control failure during battery charging or an improper method for controlling, resulting in failure to stop the battery when it is fully charged; overdischarge generally occurs in a battery with a smaller capacity in the series battery pack, and is promoted by other batteries. Overdischarge. Lithium batteries are a type of batteries that use lithium metal or lithium alloy as a negative electrode material and use a nonaqueous electrolyte solution. Lithium batteries have developed rapidly in the past ten years. They have the advantages of long cycle life, light weight, low self-discharge rate, high rated voltage, and no environmental pollution, and are supported by national policies. It will be the future power battery. The dominant trend of development Second, energy storage batteries are mainly used in solar power generation equipment and wind power generation equipment and renewable Energy storage energy storage battery. The common energy storage battery is a lead-acid battery. Energy storage batteries are divided into the following three categories: 1 Lead-acid battery for vented energy storage - There is a battery on the battery cover that can refill and precipitate gas. 2 Valve-regulated lead-acid batteries for energy storage - Each battery is sealed, but with a battery that allows the gas to escape when the internal pressure exceeds a certain value. 3 Lead-acid battery for colloidal energy storage - Use a battery with a gel electrolyte. Lead-acid battery for energy storage must have the following features 1 The use of a wide range of temperatures, the general requirements of the temperature of -30-60 degrees can be normal operation. 2 The battery has good low temperature performance and can be used in areas with low temperatures. 3 The capacity consistency is good, and consistency is maintained in series and parallel use of batteries. 4 good charge acceptance. In an unstable charging environment, there is a stronger charge acceptance. 5 Long life, reduce maintenance and maintenance costs, reduce overall system investment Third, the power tool battery is mainly used in battery power tools, the earliest use of nickel-cadmium batteries for power without the power cord battery-powered tools. With the development of battery manufacturing technology, lithium batteries are currently the mainstay. |
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