Method of monitoring vehicle batteries
First Claim
1. A method for monitoring a battery of a vehicle having a control module and a timer, comprising:
- running the timer while the vehicle is in an off state;
running the timer while the control module is in an off state;
waking up the control module after a first time increment measured by the timer;
setting a second time increment;
sampling a first state of charge of the battery; and
determining with the control module whether the battery requires charging prior to the expiration of the second time increment based upon the first state of charge.
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Accused Products
Abstract
A method for monitoring a vehicle battery includes running a timer while the vehicle and a controller are in off states. The method wakes the control module after a first time increment measured by the timer, and sets a second time increment. If needed, the method samples a first state of charge of the battery, and determines whether the battery requires charging prior to the second time increment based upon the sampled first state of charge. Determining whether the battery requires charging may include comparing the first state of charge to a threshold state of charge, or comparing to a second state of charge measured after the second time increment. A diagnostic message may be sent from the vehicle via a communications path, and, if the battery requires charging, an alert message sent to a receiving point accessible to vehicle operator.
24 Citations
19 Claims
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1. A method for monitoring a battery of a vehicle having a control module and a timer, comprising:
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running the timer while the vehicle is in an off state; running the timer while the control module is in an off state; waking up the control module after a first time increment measured by the timer; setting a second time increment; sampling a first state of charge of the battery; and determining with the control module whether the battery requires charging prior to the expiration of the second time increment based upon the first state of charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for monitoring a battery of a vehicle having a control module and a timer, comprising:
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running the timer while the vehicle is in an off state; running the timer while the control module is in an off state; waking up the control module after a first time increment measured by the timer; setting a second time increment; and determining with the control module whether the first time increment requires sampling a first state of charge of the battery, and, if so; sampling the first state of charge of the battery, and determining with the control module whether the battery requires charging prior to the expiration of the second time increment based upon the first state of charge of the battery. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for monitoring a battery of a vehicle having a control module and a timer, comprising:
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running the timer while the vehicle is in an off state; running the timer while the control module is in an off state; waking up the control module after a first time increment measured by the timer; setting a second time increment with the control module; and determining with the control module whether the first time increment requires sampling a first state of charge of the battery, and, if so; sampling the first state of charge of the battery with the control module, and determining with the control module whether the battery requires charging prior to the expiration of the second time increment based upon the first state of charge of the battery; and returning the control module to the off state, wherein the control module remains in the off state until woken up after the second time increment by the timer. - View Dependent Claims (19)
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Specification