Pole ear output connector for multi-layer positive-negative pole of high ratio power poly-lithium battery

Abstract

The invention discloses a pole ear output connector for a multi-layer positive-negative pole of a high ratio power poly-lithium battery, comprising macromolecule material insulating pieces and a plurality of pole ear metal thin pieces. The pole ear metal thin pieces are separated form one another by the macromolecule material insulating pieces to be cured into an output connector. The technical bottlenecks of the conventional battery positive-negative pole ear that the battery temperature is overhigh, the battery is internally and seriously polarized, the heat effect is concentrated, the electric current output capacity is large, and a voltage platform is very low since the cross section of an output metal conductive piece is not enough can be solved. After the pole ear connector structure of the multi-layer positive-negative pole is used, the capability of the high output ratio power of the power battery can be effectively improved, the polarization temperature of the battery can be reduced by 26%, the output voltage platform can be improved by 0.2-0.4V, the safety, the reliability and the consistency of the battery can be improved, the cycle performance of the battery can be improved, and the service life of the battery can be prolonged by 42%. The technical difficulty that the sectional area of a conductive current collector of the conventional battery polymer lithium-ion battery and the high output ratio power are restricted with each other can be broken through.

Description

technical field [0001] The invention relates to the technical field of high-output specific power and high-current discharge application of polymer lithium-ion batteries, in particular to a multi-layer positive and negative tab output connector for high specific power poly-lithium batteries. Background technique [0002] The increasing energy and environmental pressure makes the development of high specific power energy batteries an inevitable development of the industry. It is especially important for China, a country with scarce oil resources. Vigorously developing new energy is to achieve my country's energy power security, environmental protection and China's automobile industry. style, sustainable development needs. Both electric vehicle energy and special equipment industries have put forward higher requirements for the use of polymer lithium-ion batteries with technological progress. [0003] At present, in the use of high-energy polymer lithium-ion batteries at home ...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above that in the traditional polymer lithium-ion battery, the tab output connector clamps all the tabs with an output conductor 80, and is connected by a single positive and negative conductive metal sheet 90, and the positive and negative conductive metal sheets 90 The distribution of internal current density is uneven, and the consistency of current density is poor

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