Integration of starter current control device and on-board electrical system disconnecting switch

Patent metadata

Field	Value
Publication number	US-10907604-B2
Application number	US-201615743126-A
Country	US
Kind code	B2
Filing date	Jul 2, 2016
Priority date	Jul 9, 2015
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

An integrated starter and on-board electrical system disconnecting module for connecting to a starter battery and to an on-board electrical system by a transducer is disclosed. A method for limiting the starting current in a motor vehicle and the use of the integrated starter and on-board electrical system disconnecting module in multi-voltage on-board electrical systems, in particular during a start-stop operation of plug-in hybrid vehicles and for hybrid on-board electrical systems, are also disclosed. The transducer can be connected to a starter circuit including the starter battery from an on-board electrical system side, via a starter control device and via an on-board electrical system disconnector. The on-board electrical system can be uncoupled from the starter circuit and the starter control device and the on-board electrical system disconnector are integrated in the module.

First claim

The invention claimed is:

1. A module for connecting to only one starter battery and to an on-board electrical system by a transducer, comprising:
a starter control device and an on-board electrical system disconnector, wherein the transducer is connected to a starter circuit including the only one starter battery from an on-board electrical system side via the starter control device and via the on-board electrical system disconnector;
wherein the on-board electrical system is uncoupled from the starter circuit during a starting process and wherein the starter control device and the on-board electrical system disconnector are integrated in the module;
a first quasi-diode disposed between the on-board electrical system side and the starter control device, wherein the first quasi-diode is closed in a base state, wherein, during a starting process, the first quasi-diode is open and a voltage of the on-board electrical system is monitored, and wherein the first quasi-diode is closed and the starting process is terminated in an event of a voltage falling below a predetermined level on the on-board electrical system side or in an event of a failure of the transducer during the starting process;
wherein the starter control device comprises a starter switch that switches on a starter motor;
a second quasi-diode that is switched in series with the first quasi-diode and that is parallel to the starter switch and wherein a voltage support point is provided between the first quasi-diode and the second quasi-diode; and
a series resistor that is connected in series with the starter switch.

2. The module according to claim 1 , wherein the on-board electrical system disconnector comprises an on-board electrical system disconnecting switch.

3. The module according to claim 1 :
wherein the starter motor is electrically coupled to the only one starter battery such that the starter motor and the only one starter battery can be disconnected from the on-board electrical system during a starting process;
wherein the series resistor can be electrically connected to the first quasi-diode from a starter circuit side.

Assignees

• Daimler Ag

Inventors

• Baxendale Mark
• Grohmann Dieter
• Seitz Christian
• Woerz Markus
• Zinser Klaus

Classifications

• F02N2011/0877

  said switch being used as a series-parallel switch, e.g. to switch circuit elements from series to parallel connection · CPC title

• F02N11/087

  Details of the switching means in starting circuits, e.g. relays or electronic switches · CPC title

• F02N11/0862 Primary

  characterised by the electrical power supply means, e.g. battery · CPC title

• F02N2011/0874

  characterised by said switch being an electronic switch · CPC title

• F02N2011/0888

  DC/DC converters · CPC title