Unlock instant, AI-driven research and patent intelligence for your innovation.

A pressure limiting device in an aeronautical battery starting vehicle

A technology for aviation batteries and battery packs, which is applied in the field of voltage limiting devices, can solve the problems of wasting battery storage power, weakening continuous support capability, and long power supply preparation time, and achieves low-cost effects.

Pending Publication Date: 2019-01-04
NANJING MEGAMPERE ELECTRIC SCI & TECH
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the active discharge method is used to reduce the no-load voltage, but this requires a long power supply preparation time, and will waste the limited stored electric energy of the battery, making the battery's ability to guarantee the continuous power supply weak.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A pressure limiting device in an aeronautical battery starting vehicle
  • A pressure limiting device in an aeronautical battery starting vehicle
  • A pressure limiting device in an aeronautical battery starting vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The invention aims at the problem of high no-load or light-load output power supply voltage existing in the existing battery power supply system, and designs a voltage limiting device, especially for the application of aviation battery starter vehicles.

[0022] Firstly, the electrical structure and working principle of the existing aviation battery starter vehicle are introduced. The electrical schematic diagram of the existing aviation battery starter car is as follows: figure 1 shown. Because some types of aircraft need boost starting during the engine starting process, that is, 28V / 56V power supply is required. There are two sets of battery groups GB1 and GB2 of the same specification on the existing battery starting vehicle, and the two sets of batteries pass through the contactor. KM1 and KM2 are connected, and they work in l...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a voltage limiting device in an aeronautical battery starting vehicle. The voltage limiting device is connected to an output contactor supplied by the battery in parallel. Whenthe battery voltage is higher than the standard requirement, the output contactor is disconnected, and the voltage limiting device is connected in series in a power supply loop. The voltage drop of the voltage limiting device is actively adjusted to ensure that the output is not higher than the standard requirement. When the battery voltage drops below the standard range, the control circuit of the voltage limiting device actively closes the output contactor and directly bypasses the voltage limiting device. The invention can effectively solve the problem of high no-load or light-load outputpower supply voltage when the battery pack is powered, and is a simple, reliable and low-cost solution to ensure that the battery power supply conforms to the higher standard requirements.

Description

technical field [0001] The invention belongs to the field of aircraft external power supply, and in particular relates to a voltage limiting device in an aviation battery starter vehicle. Background technique [0002] When the aircraft is energized on the ground (ship surface) to check, maintain and start the engine, it needs to be powered by an external power supply of the aircraft. The existing aircraft external power supply (or "guaranteed power supply", "ground power supply") system mainly includes 28V DC, 270V DC, 115V / 400Hz single-phase, 115V / 200V / 400Hz three-phase power supply forms. Among them, 28V DC is mainly used in the protection of helicopters and small and medium-sized aircraft. With the development of national military strength and the development of general aviation technology, the demand and application of 28V DC power supply system will increase. At the same time, advanced aircraft also put forward the demand for 270V high-voltage DC external power supply...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02J1/10
CPCH02J1/10
Inventor 沈伟丰瀚麟臧春霞
Owner NANJING MEGAMPERE ELECTRIC SCI & TECH