According to the different electrolyte materials used in lithium-ion batteries, lithium-ion batteries are divided into liquid lithium-ion batteries and polymer lithium-ion batteries.The positive and negative electrode materials used in polymer lithium-ion batteries are the same as liquid lithium-ion batteries. The cathode materials are divided into lithium cobalt oxide, lithium manganese oxide, ternary materials and lithium iron phosphate materials. The negative electrode is graphite, and the working principle of the battery is basically the same.
According to battery electrolyte
The main difference between lithium-ion polymer batteries lies in the different electrolytes. Liquid electrolytes are used in liquid lithium-ion batteries, while polymer lithium-ion batteries are replaced by solid polymer electrolytes. This polymer can be “dry” or “colloidal”. Most of them currently use polymer colloidal electrolytes.
- Solid polymer electrolyte lithium-ion battery: Solid polymer electrolyte Lithium-ion battery electrolyte is a mixture of polymer and salt. This battery has low ion conductivity at room temperature and can be used at room temperature.
- Gel polymer electrolyte lithium-ion battery: Gel polymer electrolyte lithium-ion battery is to add plasticizers and other additives to the solid polymer electrolyte to improve the ion conductivity and make the battery usable at room temperature.
- Polymer lithium-ion batteries: Lithium-ion batteries with polymer cathode materials use conductive polymer as the cathode material, and their specific capacity is relatively increased.Since solid electrolytes are used instead of liquid electrolytes, compared with liquid lithium-ion batteries, polymer lithium-ion batteries have the advantages of thinning, any area and any shape, etc., So the battery shell can be manufactured with aluminum-plastic composite film, which can improve the specific capacity of the entire battery; Polymer lithium-ion batteries can also use polymer as the cathode material, and its mass specific energy will be more than 20% higher than the current liquid lithium-ion batteries.Polymer lithium-ion batteries have the characteristics of miniaturization, thinning and lightweight.Therefore, the market share of polymer batteries will gradually increase.
According to Discharge Rate
High discharge rate lipo battery
A high discharge rate lipo battery is a Lithium Polymer (LiPo) battery that is designed to deliver a high amount of current in a short period of time. These batteries are typically used in high-performance applications such as remote control cars, drones, and other RC vehicles. They are capable of delivering high currents without voltage drop or overheating, making them ideal for high-power applications. High discharge rate lipo batteries are rated in terms of their “C” rating, which indicates the maximum current that they can safely discharge at. The higher the C rating, the more current the battery can deliver.
Advantages:
- High Power Output: High discharge rate Lipo batteries can deliver high power output, making them ideal for high-performance applications that require a lot of power, such as RC cars, drones, and electric skateboards.
- Lightweight: Lipo batteries are lightweight compared to other battery chemistries, making them perfect for applications where weight is a concern, such as drones and RC planes.
- High Energy Density: Lipo batteries have a high energy density, which means they can store more energy in a smaller space. This makes them ideal for applications where space is limited.
- Low Self-Discharge Rate: Lipo batteries have a low self-discharge rate, which means they can hold their charge for longer periods of time. This makes them ideal for applications where the battery is not used frequently.
- Fast Charging: Lipo batteries can be charged quickly, which means you can spend more time using your device and less time waiting for the battery to charge.
- Long Cycle Life: Lipo batteries have a long cycle life, which means they can be charged and discharged many times before needing to be replaced. This makes them a cost-effective solution in the long run.
Application Examples:
- Quadcopters and drones
- Electric skateboards
- Radio-controlled cars and boats
- Airsoft guns
- RC airplanes and helicopters
- Electric bicycles
- Power tools such as drills and saws
- Electric scooters and hoverboards
- Remote-controlled robots
- Portable electronic devices such as portable speakers and projectors.
Low Discharge Rate Lipo battery
A low discharge rate lipo battery is a type of lithium polymer battery that is designed to discharge at a slower rate than other types of lipo batteries. These batteries are ideal for applications where a steady and consistent power output is required, such as in remote control vehicles or drones. They are also commonly used in electronic devices that require a long battery life, such as smartphones and tablets. Low discharge rate lipo batteries typically have a lower capacity than other types of lipo batteries, but they are more stable and reliable in terms of their power output.
Advantage
- Longer battery life: Low discharge rate LiPo batteries can last longer than high discharge rate LiPo batteries because they discharge at a slower rate. This means that they can hold their charge for a longer period of time, making them ideal for devices that are not used frequently.
- Safer: Low discharge rate LiPo batteries are less likely to overheat or catch fire because they are not designed to discharge quickly. This makes them safer to use in a wide range of applications.
- More stable voltage: Low discharge rate LiPo batteries maintain a more stable voltage throughout their discharge cycle. This means that they can provide a more consistent power output, which is important for devices that require a steady flow of power.
- Lighter weight: Low discharge rate LiPo batteries are generally lighter in weight than high discharge rate LiPo batteries. This makes them ideal for use in portable devices where weight is a critical factor.
- More affordable: Low discharge rate LiPo batteries are generally more affordable than high discharge rate LiPo batteries. This makes them a more cost-effective option for many applications.
Application:
- Remote control cars and boats
- RC airplanes and helicopters
- LED lights and lanterns
- Wireless headphones and earbuds
- Portable speakers
- GPS trackers
- Smartwatches and fitness trackers
- Electronic locks and safes
- Medical devices such as insulin pumps and blood glucose meters
- Electronic toys and games.
