Cylinder metal foaming battery

Abstract

The invention relates to a cylindrical metal foaming battery, which has a metal foaming positive electrode battery panel, a metal foaming negative electrode battery panel and battery core made of separating diaphragm and positioned between the positive electrode battery panel and the negative electrode battery panel, and a casing body is installed outside the battery core. The invention is characterized in that the battery core adopts the battery core through coiling the L of the difference length between the both sides of the metal foaming positive electrode battery panel overlapped with theseparating diaphragm to the upper border and the lower border and the L of the difference length between the both sides of the metal foaming negative electrode battery panel overlapped with the separating diaphragm to the upper border and the lower border into a cylindrical shape, a negative electrode cast welding layer is arranged at one end of the coiled battery core, a negative electrode tab is led out of the negative electrode cast welding layer, a positive electrode cast welding layer is arranged at the other end, and a positive electrode tab is led out of the positive electrode cast welding layer.

Description

technical field [0001] The invention relates to a battery, in particular to a cylindrical metal foam battery, which mainly provides power sources for electric vehicles (such as electric vehicles, automobiles, etc.). Background technique [0002] With the rise of oil prices and the impact of automobile exhaust emissions on the environment, motorcycles have been slowly replaced by electric vehicles, and electric vehicles have begun to develop. As the power source of electric vehicles, the battery, its capacity, discharge cycle life and voltage and other indicators has become the focus of attention. The existing battery plate is composed of an internal frame, adhesives and battery materials. Its disadvantages are: because the single battery is a planar structure, the contact area with the electrolyte is small, and the conductivity is poor; the ability of the electrode to transmit current is proportional to that of the electrode. The contact area with the electrolyte, so the c...

AI Technical Summary

Problems solved by technology

The existing battery plate is composed of an internal frame, adhesives and battery materials. Its disadvantages are: because the single battery is a planar structure, the contact area with the electrolyte is small, and the conductivity is poor; the ability of the electrode to transmit current is proportional to that of the electrode. The contact area with the electrolyte, so the conductivity of the existing planar electrode is limited, the capacity is low, especially not suitable for high current charging and discharging; the mechanized production of the planar structure is troublesome, and the implementation is difficult

However, after the positive electrode, diaphragm and negative electrode of a general cylindrical battery are wound, the positive electrode and the negative electrode are directly drawn out from one end with tabs. Aluminum foil and copper foil are prone to breakage under high current charging and discharging, or after impact, which will affect the quality and service life of the battery

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