Method for detecting battery stratification
First Claim
1. A method for detecting stratification within a vehicle battery, said method comprising the steps of:
- determining whether a state of charge of said vehicle battery is greater than a predetermined state of charge threshold;
determining whether a working capacity of said vehicle battery is greater than a working capacity threshold;
determining whether a voltage differential of said vehicle battery is greater than a predetermined voltage differential threshold; and
detecting stratification within said vehicle battery in response to said state of charge, said working capacity, and said voltage differential being greater than said state of charge threshold, said working capacity threshold, said voltage differential threshold, respectively.
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Accused Products
Abstract
A method provided for detecting stratification within a vehicle battery. The method includes determining whether a state of charge of the vehicle battery is greater than a predetermined state of charge threshold. A determination is made whether a working capacity of the vehicle battery is greater than a working capacity threshold. A determination is made whether a voltage differential of the vehicle battery is greater than a predetermined voltage differential threshold. Stratification is detected within the vehicle battery in response to the state of charge, the working capacity, and the voltage differential being greater than the state of charge threshold, the working capacity threshold, the voltage differential threshold, respectively.
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Citations
20 Claims
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1. A method for detecting stratification within a vehicle battery, said method comprising the steps of:
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determining whether a state of charge of said vehicle battery is greater than a predetermined state of charge threshold; determining whether a working capacity of said vehicle battery is greater than a working capacity threshold; determining whether a voltage differential of said vehicle battery is greater than a predetermined voltage differential threshold; and detecting stratification within said vehicle battery in response to said state of charge, said working capacity, and said voltage differential being greater than said state of charge threshold, said working capacity threshold, said voltage differential threshold, respectively. - View Dependent Claims (2, 3)
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4. A method for detecting stratification of acid concentration within a battery, said method comprising the steps of:
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(a) calculating an expected state of charge; (b) measuring a real state of charge; (c) modifying said expected state of charge by a first predetermined constant; (d) determining whether said real state of charge is less than said modified expected state of charge; (e) calculating a working capacity ratio between a differential working capacity and a differential time; (f) determining whether said working capacity ratio is greater than a second predetermined constant; (g) calculating a nominal voltage; (h) measuring a real voltage; (i) modifying said nominal voltage by a third predetermined constant; (j) determining if said real voltage is less than said nominal voltage; and (k) determining stratification within said battery in response to satisfying conditions of said steps (d), (f), and (j). - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for detecting stratification of acid concentration within a battery, said method comprising the steps of:
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(a) calculating a state of charge differential between an expected state of charge and a real state of charge; (b) determining whether the state of charge differential is greater than a predetermined state of charge threshold; (c) calculating a working capacity ratio between a differential working capacity and differential time; (d) determining whether said working capacity ratio is greater than a working capacity threshold; (e) calculating a voltage differential between a nominal voltage and a real voltage; (f) determining if said voltage differential is greater than a predetermined voltage threshold; and (g) determining stratification within said battery in response to said step (b), (d), and (f) satisfying said predetermined state of charge threshold, said working capacity threshold, and said predetermined voltage threshold, respectively. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification