Integrated optical fiber tab, preparation method and application

Abstract

The invention provides an integrated optical fiber tab, a preparation method and application, and belongs to the field of batteries. The integrated optical fiber tab comprises tab glue, a metal coating and an optical fiber body, the optical fiber body is provided with a conductive section in the length direction, a sealing area is arranged in the conductive section, the metal coating is arranged on the conductive section of the optical fiber body, the length of the conductive section on the optical fiber body continues from a position where the optical fiber penetrates out of the battery and is connected with an external circuit to a position where the interior of the battery is welded with an electrode current collector, the metal coating is continuous and complete, the upper side face and the lower side face of the optical fiber body in the sealing area are each provided with a layer of tab glue in an attached mode, and the two layers of tab glue are oppositely attached to completely wrap the optical fiber body. The invention also provides a preparation method and application of the integrated optical fiber tab. The integrated optical fiber tab disclosed by the invention is integrated in the battery and can be used for monitoring the internal state of the battery, so that the defects that the internal monitoring of the battery is difficult and the lossless, safe and real-time monitoring cannot be carried out in the prior art can be overcome.

Description

technical field [0001] The invention belongs to the field of batteries, and more specifically relates to an integrated optical fiber lug, a preparation method and an application. Background technique [0002] With the continuous improvement of battery energy density, higher requirements are put forward for high-precision monitoring and management of batteries, so as to maintain the safety performance and long cycle life of batteries. To this end, it is necessary to collect various safety information inside the battery with high precision, such as temperature, air pressure, stress, deformation and other parameters. [0003] Existing battery monitoring methods include: voltage and current monitoring, external temperature monitoring, and expansion and deformation monitoring. The above monitoring methods are limited to the information outside the battery, and regardless of the hard-shell battery or the soft-pack battery, the internal information is caused by the outer protective...

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Problems solved by technology

[0006] Aiming at the defects of the prior art, the object of the present invention is to provide an integrated optical fiber tab, a preparation method and application, adopting an integrated optical fiber tab, which has the ability to conduct electricity at the same time, and can integrate the optical fiber tab into the battery The internal state of the battery can be monitored in the battery, so as to solve the defects of the existing technology that the internal monitoring of the battery is difficult, and it is impossible to perform non-destructive, safe and real-time monitoring

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