The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2025
Filed:
Mar. 28, 2025
Shanghai Marine Equipment Research Institute, Shanghai, CN;
Bin Hu, Shanghai, CN;
Zhilin Zeng, Shanghai, CN;
Shaoyuan Wang, Shanghai, CN;
Zhongling Liu, Shanghai, CN;
Jian Li, Shanghai, CN;
Shanghai Marine Equipment Research Institute, Shanghai, CN;
Abstract
A comprehensive control method and system for a direct current (DC) power grid of a pure battery of a ship are provided. Four modular battery packs are configured to connect to corresponding busbars, and four propulsion inverters, an axle-hung propulsion motor, two domestic inverters, one equilibrium converter, and a comprehensive control system with a multi-strategy algorithm are configured. This scheme can flexibly schedule usage of a propulsion load and a domestic load, effectively balance states of charge (SOCs) of the battery packs, flexibly schedule charging, swapping, and usage of a containerized power supply, achieve high redundancy of a propulsion system, and effectively solve a problem of an electricity quantity balance between the battery packs. A function of an emergency rudder is implemented, which solves a problem that a steering gear cannot be used in the event of an alternating current (AC) power loss of a pure battery-powered ship.