Providing a boost voltage with a transient operation

Patent metadata

Field	Value
Publication number	US-10018172-B2
Application number	US-201414470640-A
Country	US
Kind code	B2
Filing date	Aug 27, 2014
Priority date	Aug 27, 2014
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A system, method and circuit for providing a boost voltage with a transient operation of a vehicular start-stop system are provided. The system includes a duty cycle or current monitor to detect a change in duty cycle or current based on the transient operation; a crank time-out detector to determine whether the change in duty cycle is over a predetermined threshold; and a reset generator to generate a reset of a boost circuit that generates the boost voltage after a predetermined delay.

First claim

We claim:

1. A system for providing a boost voltage for augmenting a vehicular battery voltage with a transient operation of a vehicular start-stop system, comprising:
a duty cycle monitor or current monitor to detect a change in duty cycle or current of a vehicular battery, the vehicular battery being electrically coupled to the system, based on the transient operation;
a crank time-out detector to determine whether the change in duty cycle or current is over a predetermined threshold; and
a reset generator to generate a reset of a boost circuit, that generates the boost voltage, after a predetermined delay, the predetermined delay being based in part by the change in the duty cycle;
wherein the duty cycle monitor or current monitor is further configured to monitor a rate of change associated with power being consumed during the transient operation, wherein the predetermined delay is further defined by the rate of change.

2. The system according to claim 1 , wherein the crank time-out detector is further configured to determine the transient operation if the duty cycle is below a predetermined threshold, and in response to duty cycle being below a predetermined threshold, disabling the reset generator.

3. The system according to claim 2 , wherein the transient operation indicates that the vehicular battery voltage is below a predetermined battery voltage threshold.

4. A method for providing a boost voltage for augmenting a vehicular battery voltage with a transient operation of a vehicular start-stop system, comprising:
performing via a processor the following steps:
detecting a change in a duty cycle or current of a vehicular battery, based on the transient operation, the transient operation corresponding to an additional loading of a vehicular battery;
determining whether the change is above a predetermined threshold;
monitoring a rate of change associated with power being consumed during the transient operation;
propagating a delay of reset signal in response to the change corresponding to the transient operation based on the determination and the monitored rate of change; and
applying the reset signal.

5. The method according to claim 4 , further comprising determining the transient operation if the duty cycle is below a predetermined threshold, and in response to duty cycle being below a predetermined, not applying the reset signal.

6. The method according to claim 5 , wherein the transient operation indicates that the vehicular battery voltage is below a predetermined battery voltage threshold.

Assignees

• Fryc David Ronald
• Macks Harold Ryan
• Lees Mike
• Pulis Joe
• Visteon Global Tech Inc

Inventors

• Fryc David Ronald
• Macks Harold Ryan
• Lees Mike
• Pulis Joe

Classifications

• B60R16/03

  for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)} · CPC title

• F02N2300/2002

  using different starting modes, methods, or actuators depending on circumstances, e.g. engine temperature or component wear · CPC title

• F02N2200/063

  Battery voltage · CPC title

• F02N19/00

  Starting aids for combustion engines, not otherwise provided for · CPC title

• B60R16/033 Primary

  characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) · CPC title