Sealed connection of power lithium battery top cover electrode column and its manufacturing and assembling method

Abstract

The invention discloses the sealing connection of the top cover electrode column of a power lithium battery and its manufacturing and assembling method, comprising a top cover stamping part 1, a lock nut 2, a plastic gasket 3, a Teflon sealing gasket 4 with a tapered surface, and a tapered Teflon sealing gasket 4. Teflon sealing ring 5, electrode column 6 with tapered surface, injection molding part 7. The present invention designs the electrode column 6 with a tapered surface, the Teflon sealing gasket 4 with a tapered surface, and the Teflon sealing ring 5 with a tapered surface. , when the lock nut 2 is locked, the purpose of reliable sealing of the plane and the hole is achieved. The beneficial effects obtained by adopting the above technical scheme are: excellent sealing performance, strong corrosion resistance, aging resistance, wide range of high and low temperature impact resistance, simple manufacturing and assembly process and the like.

Description

technical field [0001] The invention belongs to the field of power lithium batteries, and relates to a sealing connection of a top cover electrode column of a power lithium battery and a manufacturing and assembling method thereof. Background technique [0002] Low-carbon economy is the development trend of the global economy. China is also an active advocate of low-carbon economy. As an important pillar of low-carbon economy, the electric vehicle industry has immeasurable potential. Frost & Sullivan, a world-renowned growth consulting company, believes that the next ten years will be a critical period for China's auto industry to transform from fossil fuels to electric drive powertrains, and it will be a period of major opportunities for local electric drive powertrain suppliers. The power lithium battery is the core component of the electric drive powertrain, and its cost accounts for 50%-70% of the powertrain cost. The power lithium battery industry is facing major develo...

AI Technical Summary

Problems solved by technology

Its purpose is to solve the problems of poor sealing of the electrode column, weak resistance to electrolyte corrosion of the sealing material, weak aging resistance, narrow range of high and low temperature impact resistance, low reliability and safety, complicated manufacturing and assembly processes, and high quality defect rate.

Images