It is difficult to say with certainty which is better, the polymer battery or the lithium battery. They each have their own advantages. Polymer batteries are more suitable for small applications, while lithium batteries are more promising for large applications. environmental protection and safety More in line with the trend.
1. Difference in shape
Polymer batteries can be thin, in any area and in any shape, because the electrolyte can be solid or colloidal rather than liquid. Lithium batteries use electrolyte and require. a solid casing as secondary packaging to contain the electrolyte. Therefore, it also adds weight to the lithium battery.
2. In terms of safety
Most current polymer batteries are soft batteries, which use aluminum-plastic film as the outer casing whene organic electrolytes are used inside. They will not explode even if the liquid is very hot, because the aluminum-plastic film polymer battery adopts solid or colloidal state without leaking and only breaks naturally. But nothing is absolute. If the instantaneous current is large enough and a short circuit occurs, it is not impossible for the battery to ignite or spontaneously burst. This is the reason why most security accidents happen on cell phones and tablets.
3. Cell Voltage
Since polymer batteries use polymer materials, multi-layer combinations can be made in cells to achieve high voltages, while the rated cell capacity of lithium batteries is 3, 6 V. If you want to achieve high voltage in real applications, you need to connect several cells in series to form aideal high voltage work platform.
The new generation of lithium-ion polymer batteries can be thinned in shape (ATL batteries can be as thin as 0.5 mm, which is equivalent to the thickness of a card), in n any area and in any form. , greatly improves the flexibility of battery shape design, so that batteries of any shape and capacity can be manufactured to meet product needs, providing application equipment developers with a high degree of design flexibility and adaptability in power solutions to maximize and optimize the performance of its products.
At the same time, the unit energy of lithium-ion polymer batteries is 50% higher than that of ordinary lithium-ion batteries. Its capacity, charging and discharging characteristics, safety, operating temperature range and lifespane. (more than 500 times) and environmental protection. Performance and other aspects have been greatly improved compared to lithium-ion batteries.
Is it possible to use lithium batteries without a fuse box?
The power bank is better than polymer battery and safer.
The difference between lithium batteries and polymer batteries:
1. Lithium batteries and lithium-ion batteries (polymers are also lithium-ion batteries). lithium metal. Or lithium alloy is used as the negative electrode material. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements.
2. The negative electrode of the lithium-ion battery is made of graphite and other structural materials interposed. In the battery, the lithium ions moveacent between the positive and negative electrodes, which makes it much safer than lithium battery.
3. Lithium-ion batteries and lithium-polymer batteries The electrolyte of lithium-ion batteries is liquid, while the electrolyte of polymer batteries is gel or solid, which is safer.
4. Lithium Polymer Battery CaseThere are slight differences in packaging. Lithium batteries are generally steel shells; Lithium polymer batteries are packaged in aluminum-plastic packaging films, that is, soft batteries.
Detailed steps on how to assemble a 60V26 Ah lithium battery by yourself
It is normal not to use the fuse in the electric vehicle battery box , but do not charge it the charging current. is large and the battery circuit will be hot and easy to burn, so when installing the battery, use a larger wirethick.
The fuse is installed in the battery to prevent excessive current and protect the circuit!
This has something to do with the fact that the electric car battery does not have a fuse.
1. The battery interface is exposed. If the interface is short-circuited by foreign objects. Or the wire connected to the battery box may wear out over time and cause a short circuit. Without insurance protection, the battery will be short-circuited and discharged. It's very dangerous. This may cause the battery to overheat or the wire to overheat. In severe cases, wires may be burned, the battery may be damaged or even catch fire, and the battery may explode.
2. The fuse acts as insurance. There may be a short circuit when used in rainy days. At this time, the fuse has the function of protecting the battery and preventing damage or fire.
MaterialsLithium battery assembly for electric vehicles require stainless steel battery boxes, of which lithium batteries need to be powered by batteries. The specific assembly steps are as follows:
1. Prepare the required materials.
2. Put 20 lithium batteries in a string, for a total of 8 strings.
3.8 strings of lithium batteries are connected in parallel and isolated with separators and tape.
4. Secure with tape and solder the protective wire in series.
5. Use heat shrink film to wrap and insulate soldered lithium batteries.
6. Connect the protection board! Insulate well to avoid short circuits in lithium batteries.