Double electric pole columns power type square body nickel-hydrogen battery

Abstract

The present invention discloses a double pole piece power type square nickel hydrogen battery, which comprises a shell and an electric core which is arranged inside the shell and comprises an anode plate, a cathode plate and a septum, wherein a margin is remained on the edge of one end of opposite direction of the anode plate and the cathode plate. The margin is welded with one side face of a current collector and the other side face of the current collector is welded with pole piece with different poles passing through the shell. The present invention adopts the non-traditional structure, wherein the anode and the cathode are respectively arranged on two end faces of the battery, thereby strengthening the transmission channel of the electric core and external current, reducing dynamical power consumption and inner resistance of the battery, increasing transmission performance for large current and prolonging circulation service life.

Description

technical field [0001] The invention relates to a battery, in particular to a double-electrode column power type square nickel-hydrogen battery. Background technique [0002] Ni-MH battery is the safest and most practical kind of power-type green battery. Its positive electrode active material is nickel hydroxide, negative electrode active material is hydrogen storage alloy, and electrolyte is potassium hydroxide. There are two types of traditional Ni-MH batteries, square and cylindrical. The two electrode columns of the square battery are arranged on the same side of the battery, and the positive electrode of the round battery is a single-electrode cap. Compared with the square Ni-MH battery, the traditional cylindrical Ni-MH battery has the following defects: [0003] (1) Cylindrical battery electrode sheets are coiled when combined, and the electrode sheets are vulnerable to physical damage, which is prone to unsafe factors. [0004] (2) The closer to the center of the ...

AI Technical Summary

Problems solved by technology

[0003] (1) Cylindrical battery electrode sheets are wound when they are combined, and the electrode sheets are vulnerable to physical damage, which is prone to unsafe factors

[0004] (2) The heat generated by the cylindrical battery cell is closer to the center, and the surface area is small, which is not conducive to heat dissipation, and the battery performance is unstable

[0005] (3) The limitation of the connection structure at the cap of the single electrode of the traditional cylindrical battery is the bottleneck of large current transmission

Its structure is crowded, the current transmission channel is narrow, the power consumption is large, the temperature rise of the battery is obvious, and there is also the problem of heat feedback to the battery cell, which affects the stability and the power characteristics are not good.

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