Vehicle engine starting system and method
First Claim
1. A vehicle engine starting method for driving a starter motor by using a secondary battery as a power source, comprising:
- detecting a voltage at said secondary battery;
comparing the detected voltage at said secondary battery with a predetermined value; and
allowing a discharge from said secondary battery to said starter motor if the detected voltage at said secondary battery is equal to or higher than the predetermined value, and disallowing a discharge from said secondary battery to said starter motor if the detected voltage is lower than the predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle engine starting system that drives a starter motor engaged to start an engine by using a lithium secondary battery as a power source comprises a voltage sensor that detects a voltage at the secondary battery and a control device that allows power to be discharged from the secondary battery to the starter motor if the voltage at the secondary battery detected by the voltage sensor is equal to or higher than a predetermined value and disallows a discharge from the secondary battery to the starter motor if the voltage at the secondary battery detected by the voltage sensor is lower than the predetermined value.
22 Citations
10 Claims
-
1. A vehicle engine starting method for driving a starter motor by using a secondary battery as a power source, comprising:
-
detecting a voltage at said secondary battery;
comparing the detected voltage at said secondary battery with a predetermined value; and
allowing a discharge from said secondary battery to said starter motor if the detected voltage at said secondary battery is equal to or higher than the predetermined value, and disallowing a discharge from said secondary battery to said starter motor if the detected voltage is lower than the predetermined value.
-
-
2. A vehicle engine starting method for supplying power in a secondary battery to a starter motor engaged to start an engine via a key switch and a starter relay, comprising an engine start procedure including:
-
detecting a voltage at said secondary battery;
comparing the detected voltage at said secondary battery with a predetermined value;
setting said starter relay in advance in an on-enabled state if the detected voltage at said secondary battery is equal to or higher than the predetermined value and setting said starter relay in advance in an on-disabled state if the detected voltage is lower than the predetermined value; and
turning on said starter relay to discharge power from said secondary battery to said starter motor as said key switch is set to a start position while said starter relay is in the on-enabled state, wherein;
said engine start procedure is repeated until the engine is started.
-
-
3. A vehicle engine starting method for supplying power in a secondary battery to a starter motor engaged to start an engine via a key switch and a starter relay, comprising an engine start procedure including:
-
detecting as to whether or not said key switch is at a start position;
detecting a voltage at said secondary battery once said key switch is set to the start position;
comparing the detected voltage at said secondary battery with a predetermined value; and
turning on said starter relay to discharge power from said secondary battery to said starter motor if the detected voltage at said secondary battery is equal to or higher than the predetermined value, and turning off said starter relay to disallow a discharge from said secondary battery to said starter motor if the detected voltage is lower than the predetermined value, wherein;
said engine start procedure is repeated until the engine is started.
-
-
4. A vehicle engine starting system for driving a starter motor engaged to start an engine by using a secondary battery as a power source, comprising:
-
a voltage sensor that detects a voltage at said secondary battery; and
a control device that allows power to be discharged from said secondary battery to said starter motor if the voltage at said secondary battery detected by said voltage sensor is equal to or higher than a predetermined value and disallows a discharge from said secondary battery to said starter motor if the voltage at said secondary battery detected by said voltage sensor is lower than the predetermined value. - View Dependent Claims (5, 6, 7, 8, 9)
-
-
10. A vehicle engine starting system for driving a starter motor engaged to start an engine by using a secondary battery as a power source, comprising:
-
a voltage detection means for detecting a voltage at said secondary battery; and
a control means for allowing power to be discharged from said secondary battery to said starter motor if the voltage at said secondary battery detected by said voltage detection means is equal to or higher than a predetermined value and disallowing a discharge from said secondary battery to said starter motor if the voltage at said secondary battery detected by said voltage detection means is lower than the predetermined value.
-
Specification