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Calculation method of hybrid main power capacity of electric ship

A calculation method and technology for electric boats, applied in electric vehicles, battery circuit devices, current collectors, etc., to achieve the effect of meeting power requirements

Active Publication Date: 2019-02-15
江苏中智海洋工程装备有限公司
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Problems solved by technology

[0005] The hybrid main power supply of electric boats is different from the system powered by generators. The charging and discharging characteristics of lithium-ion batteries are different from those of lead-acid batteries. Supercapacitors are nonlinear devices. The existing power calculation method of the main power supply of ship power is no longer applicable to electric boats.

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  • Calculation method of hybrid main power capacity of electric ship

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] The hybrid main power supply capacity calculation method of the electric boat of the present invention is specifically as follows:

[0044] Step 1: Determine the electrical load of the electric boat

[0045] When calculating the electric load of an electric ship under various working conditions, it should include "all electrical equipment necessary to keep the ship in normal operation and meet normal living conditions", and the total power of the electric load of the whole ship can be determined according to the following formula:

[0046] P=(∑P 1 ×K 1 +∑P 2 ×K 2 )×K 3 (1.1)

[0047] where: P——the total power of the electric load of the whole ship (kW);

[0048] P 1 — Required power of the electric propulsion system (kW);

[0049] P 2 - Power required by other electrical equipment (kW);

[0050] K 1 ——The demand factor (load...

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Abstract

The invention discloses a hybrid main power supply capacity calculation method of an electric ship, comprising the following steps: 1. Determining the electric power load P= (Sigma P 1 * K 1 + Sigma P2 * K 2) * K 3 of the electric ship; 2. Determine the capacity WG= (P / K4) * T * (1 + K5) of the main battery pack; 3. Determine that capacity of the supercapacitor C= (Qn / U1) * (1 + K7). The methodcan reasonably configure the capacity of the main battery pack and the capacity of the supercapacitor, and can ensure that the effective discharge amount of the supercapacitor in the working voltagerange can meet the maximum power demand at the load instant, and the discharge termination voltage thereof is not low.

Description

technical field [0001] The invention relates to a method for calculating the capacity of a hybrid main power source of an electric ship, and belongs to the technical field of ship power supply devices. Background technique [0002] Ships whose main power supply is powered by batteries, usually called electric boats, are currently considered as one of the measures for inland waterway ships to achieve energy conservation and environmental protection. In CCS "Code for Construction of Steel Inland Waterway Ships" (2016 Edition, Part 3, Chapter 3, Section 1, 3.1.1.3), it is stipulated that the main power supply device can use battery packs. At present, the design of the main power supply of electric boats is still in the exploratory stage. [0003] Electrochemical batteries have the characteristics of high energy density, long discharge time, and stable output current, but the power density is low, which cannot meet the demand for maximum power at the moment of load. Supercapac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06F17/13H02J7/34
CPCH02J7/345G06F17/11G06F17/13Y02T10/70
Inventor 温莉陈智同张发平丁笑寒高波周洋
Owner 江苏中智海洋工程装备有限公司
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