Reserve batteries for powering subsea applications

Abstract

The subsea system includes an electric control system for controlling the subsea system and a replaceable reserve battery electrically coupled to the control system to provide backup and / or supplemental power to the control system when the reserve battery is activated. A reserve battery is disposed within a housing having a first coupler, the subsea system includes a second coupler, the first coupler and the second coupler are detachably connected to each other, and the first coupler and the second coupler include Electrically connected so that the reserve battery is replaceable while the subsea system remains below the surface.

Description

technical field

[0001] This disclosure relates to the use of battery backup to power subsea power functions such as in subsea oil drilling applications where power is required for many purposes such as for emergency blowout preventers, point of load power distribution, hybrid systems , Supplementary power supply, backup key system, etc. power supply. The invention is applicable to any subsea power function that requires the use of batteries that degrade over time, making it advantageous to use reserve batteries that do not degrade until activated. Background technique

[0002] Over time, primary cell degradation results in a reduction in the battery's ability to hold and deliver charge to a load. Due to the active state of the primary battery, the battery will lose efficacy as the battery ages. Similarly, rechargeable batteries degrade over time. While rechargeable batteries have the ability to be recharged, these batteries lose their ability to hold the same original cha...

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