Intelligent diving lithium battery pack with pressure compensating device and preparation method thereof

Abstract

The invention relates to an intelligent diving lithium battery pack with a pressure compensating device and a preparation method thereof, belonging to the field of lithium ions. A battery pack case is internally provided with a plurality of monomer lithium batteries connected in series and in parallel, a battery management system as well as a pressure compensating device consisting of a case, an oil filling valve, watertight sockets, a compensating leather bag, a check valve and a protective cover. Positive and negative lugs of each monomer lithium battery are provided with pole columns which are riveted on the lugs of the monomer lithium batteries through a riveting structure; the battery pack in the case is electrically connected by connecting busbars among the pole columns on the tops of the adjacent monomer batteries; the compensating leather bag is arranged above the case and surrounds a closed space together with the case; the periphery of the compensating leather bag is in a form of a gauffer; the check valve is arranged on the top of the compensating leather bag; and the storage battery case and the lithium batteries are free from appearance deformation and performance damage. The intelligent diving lithium battery pack has the advantages of long service life, high specific flow, high safety and low cost, and can meet the requirements for deep-diving equipment.

Description

technical field [0001] The invention relates to a latent intelligent lithium battery pack with a pressure compensation device, belonging to the technical field of lithium ion batteries. Background technique [0002] Deep sea equipment: such as deep submersibles, deep submersible vehicles, deep sea lifesaving equipment, oil drilling equipment, etc., usually need to work in a deep sea pressure environment of hundreds of meters or even thousands of meters. With the increase of equipment diving depth, the battery The pressure on the group also increased accordingly. If according to the traditional practice, relying on increasing the thickness of the box shell to ensure the structural strength and sealing of the box, it will inevitably increase the volume and weight of the battery pack, increase its own energy consumption, and thus affect the power and economy of the equipment. Wait. [0003] At present, the power supply of underwater equipment mostly uses silver-zinc secondary...

AI Technical Summary

Problems solved by technology

If according to the traditional practice, relying on increasing the thickness of the box shell to ensure the structural strength and sealing of the box, it will inevitably increase the volume and weight of the battery pack, increase its own energy consumption, and thus affect the power and economy of the equipment. Wait

[0003] At present, the power supply of underwater equipment mostly uses silver-zinc secondary batteries, and its service life is only more than 30 times, and the maintenance cost is high, which is far from meeting the requirements of long life, high power, high safety and low cost of equipment.

At the same time, during the use of the battery, because of the liquid electrolyte inside, there is a potential safety hazard when the battery box is subjected to a large external pressure

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