Power Supply Unit for a Vehicle Electrical System of a Motor Vehicle

a technology for power supply units and motor vehicles, which is applied in the direction of electric generator control, electric devices, transportation and packaging, etc., can solve the problems of inability to use in the vehicle field, power loss at the diode of up to 50 w, and inability to use in the known power supply units of motor vehicles. achieve the effect of increasing the phase signal detection range, reducing power loss, and increasing the efficiency of the generator

Active Publication Date: 2013-08-22
SEG AUTOMOTIVE GERMANY GMBH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a way to detect all possible voltages by increasing the range of phase signal detection. This allows for better use of temperature-dependent diodes, which have lower power loss and require less cooling. The efficiency of the generator is increased, and the amount of heat generated is reduced. Suitable rectifier elements include Schottky diodes, TMBS diodes, TJBS diodes, and / or lambda diodes. Additionally, these diodes display a very small leakage current when in a cold state, which prevents the discharge of a starter battery in a motor vehicle.

Problems solved by technology

0.7 V. Along with the intermittently large currents of more than 200 A, this leads to a power loss at the diode of up to 50 W (in the case of three-phase generators).
Diodes having a lower forward voltage are known, such as germanium diodes or Schottky diodes, but these cannot be used in the vehicle field without any problem, since especially their characteristic temperature dependence makes using them impossible in known power supply units for motor vehicles, for the following reasons:

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018]In a specific embodiment, FIG. 1 shows a power supply unit, according to the present invention, in a circuit diagram. The power supply unit includes an alternating current generator 10 having five phase-forming phase windings 70, 71, 72, 73, 74. Obviously, other numbers of phases and interconnections are possible, particularly three-phase (or generally multiphase) systems in star connection or delta connection. The totality of all phase windings 70, 71, 72, 73, 74 forms the stator winding. The five phase-forming phase windings 70, 71, 72, 73, 74 are interconnected in this case to form a basic circuit as a five-pointed star (drude's foot), the windings interconnected in the points of the star include an angle of about 36° el. A rectifier bridge circuit 69 is connected to the interconnection points of points 80, 81, 82, 83, 84. The phase windings are interconnected as follows:

[0019]Partial phase winding 70 is connected to partial phase winding 71 at interconnecting point 80. Pha...

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

An improved power supply unit for a vehicle electrical system of a motor vehicle, which has an a.c. generator, that provides a phase signal, having an excitation coil, a field regulator assigned to the excitation coil and a rectifier having rectifier elements for the rectification of the generator voltage supplied by the a.c. generator. The field regulator has a voltage recording range for the evaluation of the phase signal having a minimum value and a maximum value, the maximum value being adjusted to the nominal voltage of a power supply unit of the motor vehicle.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a power supply unit for a vehicle electrical system of a motor vehicle.BACKGROUND INFORMATION[0002]Motor vehicle generators may include a diode bridge circuit, by which the alternating voltage generated by the generator is rectified.[0003]Diode rectifiers may be relatively robust and reliable, and are consequently particularly suitable for operation in a motor vehicle. They do, however, have certain disadvantages too. In particular, diodes demonstrate a voltage drop in the forward direction that is not negligible. Zener diodes, particularly ZR diodes, are used for the rectifiers, which normally have a forward voltage of ca. 0.7 V. Along with the intermittently large currents of more than 200 A, this leads to a power loss at the diode of up to 50 W (in the case of three-phase generators). As a result, the diodes have to be designed for this sort of power, and especially also have to be sufficiently cooled.[0004]Diodes havin...

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
Patent Type & Authority Applications(United States)
IPC IPC(8): B60L11/06B60L50/12
CPCH02P9/305B60L11/06H02P9/48B60L50/12
Inventor WOLF, GERTEINBOCK, STEFANJAROS, ROLFSUELZLE, HELMUT
Owner SEG AUTOMOTIVE GERMANY GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap