Method for voltage regulation of an electrical system of a motor vehicle

A vehicle electrical and motor vehicle technology, applied in the power supply of auxiliary motors, electric vehicles, vehicle components, etc., can solve the problems of heavy energy storage devices and large installation space

Inactive Publication Date: 2016-09-28
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, energy storage devices are relatively expensive and heavy components which additionally require a large installation space, so that known methods for supplying voltage based on known vehicle electrical systems and operating methods are not compatible with regard to cost, weight and installation. Corresponding disadvantages of space are associated with

Method used

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  • Method for voltage regulation of an electrical system of a motor vehicle
  • Method for voltage regulation of an electrical system of a motor vehicle
  • Method for voltage regulation of an electrical system of a motor vehicle

Examples

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Embodiment Construction

[0046] figure 1 An exemplary embodiment of a vehicle electrical system 1 of a vehicle, in particular a commercial vehicle, is schematically illustrated. The vehicle electrical system 1 comprises two subnetworks 2 , 3 in a manner known per se:

[0047] A first partial network 2 , in which a first network voltage U1 (for example 24 V) is used, comprises a first energy storage device 5 , for example in the form of a lead-acid battery, and a load resistor. The load resistance is formed by means of at least one, generally a plurality of consumers 9 . Consumers in the first partial network 2 require a constant voltage supply.

[0048] In addition, the vehicle electrical system comprises a second partial network 3 in which a second network voltage U2 (eg 48 V) is applied and provides an electric machine 8 operable in generator mode and motor mode, eg , a starter generator, said electric machine is connected to the partial network 3 via a converter 7 . The electric machine 8 provi...

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PUM

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Abstract

The invention relates to a method for voltage regulation of an electrical system (1) of a motor vehicle; the vehicle electric system comprises the following structures: a first portion network (2) suitable for a first normal voltage (U1), and comprises a first energy storage unit (5) for electricity and a load resistor using at least one consumer (9); a second portion network (3) suitable for a second normal voltage (U2), and comprises a motor mode and power machine (8) operated under a generator mode, and a second energy storage unit (6) for electricity; the first and second portion networks (2, 3) are connected through a first DC converter (4).

Description

technical field [0001] The invention relates to a method for supplying voltage to a vehicle electrical system of a motor vehicle, wherein the vehicle electrical system comprises two partial networks connected via a DC converter and in each case an electrical energy storage device is arranged in said part of the network. Background technique [0002] Consumers that consume small amounts of power are generally connected to the first part network with a relatively low nominal voltage, eg 24V. In addition to the second energy storage device and the electrical machinery used to drive the vehicle and / or assist in driving the vehicle, further consumers that draw significant amounts of power can be connected to a second part of the network with a relatively high nominal voltage (eg 48V) . [0003] Vehicle electrical systems of this type are used in particular in mild-hybrid vehicles, hybrid vehicles or electric vehicles, in which an electric machine is provided for driving and / or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00B60L11/18H02J7/34
CPCB60L58/10B60L1/003H02J7/34B60R16/03B60R16/033H02J7/1423B60L2210/12B60L1/00B60L2210/14B60L50/40B60L58/20H02J2310/46Y02T10/70Y02T10/72
Inventor S.佐博尔
Owner MAN TRUCK & BUS AG
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