Bendable wearable lithium ion battery

Abstract

The invention provides a bendable wearable lithium ion battery. The bendable wearable lithium ion battery comprises a battery negative plate, a battery positive plate, a battery diaphragm, a battery shell aluminum-plastic film, and battery electrolyte; after being piled or wound, the battery negative plate, the battery positive plate and the battery diaphragm are packaged into the battery shell aluminum plastic film, and the related electrolyte is added; the battery negative plate, the battery positive plate, the battery diaphragm, the battery shell aluminum-plastic film are bendable structures; the specific design is performed according to different bending degrees and different bending locations; the battery provided by the invention is integrated, the consistency and the security are good, and the series-parallel connection of the additional batteries is unnecessary, and the conductive wire is unnecessary; a battery bad problem caused by consistency difference combination of different batteries is avoided, and the high internal resistance, the welding slag and like safety problems caused by welding the wires between the batteries can be avoided.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a bendable and wearable lithium-ion battery. Background technique [0002] In view of the high energy density and high mass density of lithium-ion batteries, in recent years, the energy systems of portable electronic products, wearable products and other products have gradually used lithium-ion batteries. In addition, due to the difficulty of processing and manufacturing small lithium-ion batteries Much higher than ordinary 3C batteries, therefore, the market for small lithium-ion batteries is also in short supply. Especially for today's smart wearable devices, the product models are various, including round, oval, and square. For ordinary aluminum or steel batteries, the design is relatively difficult to achieve, but for aggregated For bio-batteries, it is relatively easy to implement. As for the batteries of smart wearable devices, there are also some manufactur...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN201310746111.2 discloses a flexible wearable lithium battery. The patent is to encapsulate more than two small single cells in a flexible soft body through silica gel or flexible plastic, and the single cells By connecting in series or in parallel, battery modules can be assembled arbitrarily, so the battery modules can be bent, and one or more battery modules can easily form a flexible wearable lithium battery, but the disadvantage of this invention is that the used series or The consistency requirements of parallel batteries will be quite high. The consistency here includes not only the capacity, internal resistance, and voltage of the battery, but also the cycle life and cycle attenuation of the battery.

The main disadvantage of this invention is that the lithium battery product only presses the square battery into a curved shape, and the energy density of the battery for wearable products with a more complex internal structure is very low.

[0005] Chinese patent CN207530015U discloses a bendable green lithium battery. The patent sets the rotating device at the top end of the bottom plate, and the bending deformation of the battery is realized by the rotation of the rotating device. Although the patent realizes the bending deformation of the battery, it improves the battery life. The use of space, but the patent still has some shortcomings, because the ability of the battery to withstand bending is limited after all, so when the battery is repeatedly bent, there may be certain safety hazards

[0006] Chinese patent CN207441757U discloses a flexible and bendable battery without creases. This patent can reduce the deep gap between the sealing edge of the packaging film and the main body of the battery cell during the bending process by means of a support plate arranged on at least one opposite side of the battery cell. Creases, thereby maximizing the reduction of the risk of rupture of the packaging film caused by height steps, and improving the use of flexible batteries. The same existence of this patent cannot solve the potential safety hazards of batteries after repeated bending.

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