The following types of lithium-powered batteries are more commonly used in cordless vacuum cleaners and each has its own advantages:
First, 18650 lithium-ion battery
Composition: Wireless vacuum cleaners usually use multiple 18650 lithium-ion batteries in series and combined into a battery pack, generally in the form of cylindrical battery pack.
Advantages: mature technology, relatively low cost, easy to get on the market, strong generality. Mature production process, better stability, can adapt to a variety of different working environments and conditions of use, to ensure the stable operation of the wireless vacuum cleaner. The capacity of single battery is moderate, and the voltage and capacity of the battery pack can be flexibly adjusted through series-parallel combination to meet the power requirements of different wireless vacuum cleaners.
Disadvantages: Energy density is relatively limited, under the same volume, its stored power may not be as good as some new batteries, resulting in wireless vacuum cleaners may be limited by the endurance time.
Second, 21700 lithium batteries
Composition: similar to the 18650, it is also a battery pack composed of multiple batteries connected in series and parallel, but its single battery volume is larger than the 18650.
Advantages: Compared with 18650 batteries, 21700 lithium batteries have a higher energy density, in the same volume of the battery pack, you can store more power, so as to provide longer battery life for the wireless vacuum cleaner. It can support higher power output to meet the high current demand of wireless vacuum cleaners in high suction mode, ensuring the strong suction power of the vacuum cleaner.
Cons: The current cost is relatively high, making the price of wireless vacuum cleaners with 21700 lithium batteries a bit higher.
Third, soft pack lithium batteries
Composition: the shape is usually flat, similar to the lithium batteries used in cell phones, and the interior is made up of multi-layer soft pack batteries.
Advantages: high energy density, can hold more power in a smaller volume, which helps to reduce the overall size and weight of the wireless vacuum cleaner, while improving the endurance. The shape and size are highly customizable and can be designed according to the space structure inside the wireless vacuum cleaner, making better use of space and improving the ergonomic design and ease of use of the vacuum cleaner. Smaller internal resistance and high charging and discharging efficiency can reduce energy loss and prolong the service life of the battery .
Disadvantages: Compared with cylindrical batteries, their production process requires higher requirements, and the requirements for the environment and equipment in the manufacturing process are more stringent, so the cost is also higher. In the use of the process need to pay more attention to the protection of the battery to prevent the battery from being crushed, puncture and other damage, otherwise it may lead to battery bulging, liquid leakage or even burning and other safety issues.
Lithium iron phosphate lithium-ion battery
Composition: lithium iron phosphate as the positive material, graphite as the negative material, the use of non-aqueous electrolyte lithium-ion battery .
Advantages: good thermal stability, when used in high temperature environments, the battery security is higher, less likely to thermal runaway and other dangerous situations, reducing the safety risk of wireless vacuum cleaners in the process of use. Long cycle life, after many charging and discharging cycles, the capacity of the battery declines relatively slowly, can maintain good performance, extend the replacement cycle of the battery of the wireless vacuum cleaner, reduce the cost of use.
Disadvantages: relatively low energy density, compared with lithium ternary batteries, etc., in the same volume or weight, the storage capacity is less, which may affect the endurance of the wireless vacuum cleaner. Poor low-temperature performance, in a low-temperature environment, the charging and discharging efficiency of the battery will be reduced, and the output power will be affected to a certain extent, resulting in the use of wireless vacuum cleaners in cold environments may not be as good as in room temperature environments.
Five, ternary lithium power lithium-ion batteries
Composition: generally refers to the use of lithium nickel cobalt manganese oxide (Li (NiCoMn) O2) or lithium nickel cobalt aluminum oxide (Li (NiCoAl) O2) and other ternary materials such as lithium-ion batteries.
Advantages: Higher energy density, can store more power than lithium iron phosphate batteries, so as to provide more durable battery life for cordless vacuum cleaners, or reduce the size and weight of the battery under the same range requirements. With better charging and discharging performance, it can be quickly charged and discharged to meet the needs of wireless vacuum cleaners for rapid replenishment of power and high power operation.
Disadvantages: Relatively poor safety, in high temperature, overcharge, over-discharge and other extreme conditions, the risk of thermal runaway of the battery is relatively high, the battery management system of the wireless vacuum cleaner is more stringent requirements to ensure the safety of use.
Post time: Oct-25-2024