Tabs are a raw material for lithium-ion polymer battery products. For example, mobile phone batteries, Bluetooth batteries, laptop batteries, etc. all require tabs.
The battery is divided into positive and negative poles. The tabs refer to the metal conductors that lead out from the positive and negative poles of the battery cell. They are commonly known as the positive and negative poles of the battery, which are the contact points during charging and discharging. This contact point is not the copper sheet we see on the outside of the battery, but the connection inside the battery. There are three types of battery tabs: the positive pole is aluminum (Al), the negative pole is nickel (Ni), and the negative pole is nickel-plated copper (Ni-Cu). They are all composite materials composed of two parts: a film and a metal strip.
The film is the insulating part of the pole piece. Its function is to prevent the short circuit between the metal strip and the aluminum-plastic film during battery packaging, and to seal it with the aluminum-plastic film by heat (about 140°C) to prevent leakage. A pole piece is made of two pieces of film, sandwiching the metal strip in the middle. There are three types of films used in the market: black film, white film and single-layer film. The commonly used black film is a three-layer structure: melanin, melting point 66°C; PE, melting point 105°C; PP, melting point 137°C.
The finished product packaging of the tabs is divided into disc type (the entire metal strip is coated with film and then wound into a disc) and plate type (the metal strip is coated with film and cut into independent sheets, which are then arranged in a row with two transparent thin plastic sheets sandwiched in between).
However, the 46800 battery launched by Tesla is a tab-free battery, which is said to be a revolutionary invention, with a 54% increase in battery life and a 56% reduction in cost. So, what is a tab-free battery?
The non-electric ear battery is actually a battery without a motor interface. Without Tab, it is still essentially a lithium-ion battery. Therefore, this is not a battery with a new principle. Its innovation lies mainly in the arrangement of lithium-ion batteries and the way of taking electricity.
Although the shape of the sensor ear battery is similar to that of ordinary batteries, which is also cylindrical, its internal structure is completely different. It is made of positive and negative electrodes and the battery chemical material in the middle, which are made into thin films and then rolled up.
There are 4 advantages of anode-free batteries:
1. Charged particles no longer need to pass through thick batteries. They only need to penetrate a thin film, so the loss is definitely less.
2. Directly remove the electrodes at both ends. Instead of making two electrodes to draw electricity, use the long membrane at both ends to draw electricity, eliminating the extra loss caused by installing two electrodes.
3. Electric vehicles require large battery packs, and the batteries have heating problems. Traditional tab-type batteries have a small contact area, and the current will also be "jammed", which will cause uneven heating. Tab-free batteries make the current flow more evenly and the heating more evenly, which will be more convenient for overall heat dissipation.
4. Because there is no battery ear piece, it saves parts and saves money!
However, although the tab-free battery has many advantages, it still takes time to promote the new technology. Currently, the most popular battery on the market is the tab-free battery.Battery Tab MaterialsYou can contact us,RaytronNew Energy is a company that uses original technology to solve the special needs of new energy electronic products for ultra-narrow precision metal foil strips. After ten years of hard work, we can meet your various customized needs.
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