Large-capacity nickel-metal hydride battery

Abstract

The invention discloses a large-capacity nickel-metal hydride battery, comprising a pole plate group, wherein a diaphragm is arranged between the adjacent positive plate and negative plate, three pole ears with C-like distribution are arranged on the pole plates, and the positive plate and the negative plate are oppositely arranged at intervals; one side of the pole plate group is coated with a positive current collector, the outer side of the positive current collector is coated with a positive flow deflector, the positive flow deflector is connected with the positive current collector through a low-melting-point welding layer, a positive pole rod is arranged on the positive flow deflector, the outer side of the positive flow deflector is coated with a positive guard plate, and a positive cooling system is arranged between the positive guard plate and the positive flow deflector; and the negative side structure is the same as the positive side structure. The pole plate adopts the pole ears with C-like distribution, the positive and negative current collectors are connected with the corresponding pole ears, the flow deflector and the current collector are welded together through a low-melting-point silver alloy, the resistivity of a conductor can be reduced, and thus the charge and discharge rate can be increased to a maximum extent; and the positive cooling system and the negative cooling system can cool the temperature rise generated by high-rate charging and discharging of the batteries.

Description

Technical field [0001] The present invention relates to a battery, in particular to a large-capacity nickel-metal hydride battery. Background technique [0002] With the improvement of my country's national defense modernization, the research and development of new power supplies for national defense equipment such as submarines has become a key research topic. The new power supply replaces the original lead-acid power supply. Its technical requirements are very high. It should have large single capacity, high power, and fast speed. Charging, safe and reliable technical requirements. Our country is a big country of rare earths. Our country has unique resource advantages for nickel-metal hydride batteries that use rare earths as the main raw materials of batteries. [0003] In existing nickel-metal hydride battery technology, since the positive plate and negative plate are connected to the conductor through the tabs and then output current through the pole, most of them adopt...

AI Technical Summary

Problems solved by technology

[0003] Existing nickel-metal hydride battery technology, since the positive plate and negative plate are connected to the conductor through the tab and then output current through the pole, most of them use a single-sided or side electrode connection structure, due to the limited cross-sectional area of ​​the connection between the plate and the conductor , which limits the release of large currents, and its charge and discharge rate is limited

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