First of all, let's understand what is lithium iron phosphate battery and ternary lithium battery.
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Both lithium iron phosphate battery and ternary lithium battery are a kind of lithium battery. Due to the different physical structure of the battery, the electrical parameters are also different, so there will be lithium iron phosphate battery in the selection Which is better, ternary lithium battery?
The number refers to a cylindrical battery with a diameter of 32mm and a height of 70mm
During the charging process, part of the lithium ions in the lithium iron phosphate come out, are transferred to the negative electrode through the electrolyte, and are embedded in the carbon material of the negative electrode; at the same time, electrons are released from the positive electrode and reach the negative electrode from the external circuit to maintain the balance of the chemical reaction.
During the discharge process, lithium ions come out of the negative electrode and reach the positive electrode through the electrolyte. At the same time, the negative electrode releases electrons and reaches the positive electrode from the external circuit to provide energy for the outside world.
Under the condition of chemical reaction in the battery, the gas generated inside will first gather in the vent tube, which is conducive to the dispersion of gas inside the battery, and the battery cell will never explode.
The iron-lithium battery cylindrical iron-lithium battery introduces a vent tube device, which effectively solves the safety problems caused by the high temperature of the battery cell under extreme conditions such as overcharge, short circuit, and collision.
Fe-lithium battery cell safety valve When the internal pressure reaches 1.8Mpa, the safety valve will open and the gas will be discharged to avoid the risk of explosion.
The 1C cycle life of lithium iron phosphate batteries generally reaches 2,000 times, or even more than 3,500 times, while the energy storage market requires more than 4,000-5,000 times, guaranteeing a service life of 8-10 years, which is higher than the 1,000-plus cycles of ternary batteries Life, while the cycle life of long-life lead-acid batteries is about 300 times.
2. ternary lithium battery
means 18mm in diameter and 65mm in length. The model of the No. 5 battery is , with a diameter of 14 mm and a length of 50 mm. Generally, batteries are used more in industry, and rarely used in civilian use. The common ones are more used in notebook batteries and high-end flashlights.
The ternary composite cathode material is made of nickel salt, cobalt salt, and manganese salt. The ratio of nickel, cobalt, and manganese in it is adjusted according to actual needs. Compared with lithium cobalt oxide, the battery with the positive stage is a ternary material, and the battery is safer. High performance, its shortcoming is that the voltage is too low.
Node nominal voltage is generally: 3.6V or 3.7V
The minimum end-of-discharge voltage is generally: 2.75V, lower than this voltage will easily lead to a serious drop in battery capacity or even scrapping
Maximum charge termination voltage: 4.20V
Diameter: 18±0.2mm
Height: 65±2.0mm
Capacity: above mAh, conventional capacity is mAh-mAh
Advantages of lithium iron phosphate battery:
1. The lithium iron phosphate battery has a long life, and the single cycle life is more than times. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years.
2. Safe to use. The lithium iron phosphate battery has undergone strict safety tests and will not explode even in a traffic accident.
3. Fast charging. Using a dedicated charger, 1.5C charging for 40 minutes can fully charge the battery.
4.The lithium iron phosphate battery is resistant to high temperature, and the hot air value of the lithium iron phosphate battery can reach 350 to 500 degrees Celsius.
5. The lithium iron phosphate battery has a large capacity.
6. Lithium iron phosphate batteries have no memory effect.
7. Lithium iron phosphate battery is environmentally friendly, non-toxic, non-polluting, with a wide range of raw materials and cheap prices.
The disadvantages of lithium iron phosphate batteries are:
1. The tap density of the positive electrode of lithium iron phosphate battery is small, and the density is generally around 0.8 to 1.3. Big size.
2. Poor electrical conductivity, slow diffusion of lithium ions, and low actual specific capacity during high charge and discharge.
3. The low temperature performance of lithium iron phosphate battery is poor.
Advantages of ternary lithium battery
1. High voltage platform: The voltage platform of ternary materials is obviously higher than that of lithium iron phosphate, the high line can reach 4.2 volts, and the discharge platform can reach 3.6 or 3.7 volts.
2. High energy density: The higher the voltage platform, the larger the specific capacity, so the battery with the same volume, weight, or even the same ampere-hour, the ternary material lithium battery with a higher voltage platform has a longer battery life.
3. The tap density is high, which is higher than that of lithium iron phosphate batteries.
Disadvantages of ternary lithium battery
1. The safety performance is poor, and it is difficult for a ternary battery with a large capacity to pass safety tests such as acupuncture and overcharge.
2. Poor high temperature resistance, unstable structure at high temperature, resulting in poor high temperature safety, and high pH value can easily cause monomer flatulence.
3. Short cycle life and poor high-power discharge.
4. The elements are poisonous. The temperature of the ternary lithium battery rises sharply after high-power charging and discharging, and the release of oxygen after high temperature is extremely easy to burn.
Summary: lithium iron phosphate battery and ternary lithium battery have their own advantages and disadvantages. lithium iron phosphate battery has a long service life and high temperature resistance. ternary battery is relatively low temperature resistant and small in size. Therefore, our company recommends using iron phosphate in hot areas For lithium batteries, ternary lithium batteries can be used in cold areas. If the large battery pack exceeds 200AH, lithium iron phosphate batteries should be used. Safety first!
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Have you ever wondered what lies beneath the surface of your smartphone, electric car, or portable power bank? Today, we're taking you on an electrifying journey to explore the inner workings of battery technology. From the basic cell to the fully assembled battery pack, we'll uncover the components that power the devices we rely on every day.
At the core of every battery lies the humble cell. These miniature powerhouses are the fundamental building blocks of energy storage. Think of them as the individual Lego pieces that make up your battery's construction.
Key Features:
- Shape: Typically cylindrical or rectangular
- Composition: Contains electrodes, electrolyte, and separator
- Voltage: Delivers a single unit of voltage (usually 3.7V for lithium-ion)
Fun Fact: The AA battery you use in your remote control is actually just one cell!
When battery cells come together, they form modules. A module can be thought of as a pre-assembled section of your Lego creation. It combines multiple cells to increase the overall power output, making it suitable for more demanding applications.
What Makes Modules Special:
- Multiple Cells Connected: Cells are connected in series or parallel, increasing voltage or capacity
- Increased Voltage & Capacity: Provides more power than individual cells
- Basic Circuitry: Often includes simple management circuitry for monitoring and protection
Battery modules are ideal for applications that require higher power or larger capacity, such as electric vehicles, large portable power stations, and energy storage systems.
The final form of a battery is the battery pack, where multiple modules come together to create a fully integrated energy solution. Think of it as the completed Lego masterpiece. Battery packs are what you'll find in electric cars, laptops, and home energy storage systems.
Pack Perks:
- Combination of Multiple Modules: Combines multiple modules to deliver the required voltage and capacity
- Battery Management System (BMS): Includes an advanced BMS to monitor and manage charging, discharging, and overall health
- Full Power Supply: Provides the complete voltage and capacity necessary for high-performance applications
Battery packs are the cornerstone of modern energy storage, powering everything from electric vehicles to grid-level storage systems.
Let's break down the key differences between cells, modules, and packs to help you understand their roles in a battery system:
AspectBattery CellsBattery ModulesBattery PacksPower OutputLowMediumHighSizeSmallMediumLargeWeightLightHeavierHeaviestCostLowestModerateHighestEach level in the battery hierarchy—cells, modules, and packs—provides more power, larger capacity, and increased complexity. Understanding these differences helps you make informed decisions when choosing the right battery for your needs.
Battery technology is a driving force behind numerous industries and is powering the devices we use every day. Let's look at some real-world applications where battery cells, modules, and packs play crucial roles.
1. Electric Vehicles (EVs)
- Battery Cells: Found in car key fobs and small auxiliary systems
- Battery Modules: Power auxiliary systems such as lights, air conditioning, and infotainment
- Battery Packs: Drive the main electric motor, providing the energy needed for the vehicle to operate
2. Grid Energy Storage
- Battery Packs: Large-scale battery packs are used to store renewable energy (like solar or wind power) for later use
- Modules & Cells: Within these large systems, modules and cells are connected in series or parallel to ensure efficient energy storage and retrieval
3. Portable Electronics
- Smartphones: Typically use a single custom-shaped battery cell designed specifically for the device
- Laptops: Often contain small battery packs made up of multiple cells to provide longer-lasting power
As battery technology advances, it's playing an even larger role in areas like wearable devices, drones, and home energy management.
To ensure your batteries last as long as possible and perform optimally, it's essential to follow proper maintenance and safety guidelines.
1. For Battery Cells:
- Storage: Store in a cool, dry place, away from extreme temperatures
- Avoid Over-Discharge: Try not to let the battery discharge completely, as this can damage the internal structure
2. For Battery Modules & Packs:
- Charging Guidelines: Always follow the manufacturer's charging instructions to avoid overcharging or undercharging
- Inspection: Regularly check for signs of swelling, leakage, or physical damage
Safety First: Never attempt to disassemble a battery pack or module unless you are a trained professional. Batteries contain chemicals and high-voltage circuits, and improper handling can be hazardous.
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