Battery monitoring system
First Claim
1. A method of monitoring a battery comprising:
- (a) measuring a voltage of the battery;
(b) measuring a current of the battery;
(c) measuring a dynamic parameter of the battery;
(d) obtaining a temperature of the battery;
(e) determining an operational condition of the battery, independently of a current state of the battery, as a function of the battery voltage, the battery current, the dynamic parameter of the battery and the battery temperature; and
(f) repeating steps (a) through (e) iteratively, and outputting battery condition information at the end of each iteration.
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Accused Products
Abstract
A battery monitoring system (BMS), which utilizes a minimum amount of input data (time, voltage, current, temperature and conductance, for example) to periodically determine a vehicle battery status or condition is provided. The BMS combines electronic hardware and software to give logical and critical data to assess and control a battery-based electrical system. The BMS can include processing circuitry (a microprocessor, for example), which is coupled to a voltage sensor, a current sensor, a temperature sensor, etc., that provide the necessary input data for the microprocessor, which executes program code, to determine the vehicle battery status or condition. A method of monitoring a battery in an operating vehicle is also provided.
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Citations
20 Claims
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1. A method of monitoring a battery comprising:
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(a) measuring a voltage of the battery;
(b) measuring a current of the battery;
(c) measuring a dynamic parameter of the battery;
(d) obtaining a temperature of the battery;
(e) determining an operational condition of the battery, independently of a current state of the battery, as a function of the battery voltage, the battery current, the dynamic parameter of the battery and the battery temperature; and
(f) repeating steps (a) through (e) iteratively, and outputting battery condition information at the end of each iteration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a positive connector coupled to a positive terminal of the battery;
a negative connector coupled to a negative terminal of the battery;
a voltage sensor configured to measure a voltage of the battery;
a temperature sensor configured to measure a temperature of the battery;
a current sensor configured to measure a battery current; and
processing circuitry configured to measure a dynamic parameter of the battery using the first and second connectors, and to determine an operational condition of the battery, independently of a current state of the battery, as a function of the battery voltage, the battery current, the dynamic parameter of the battery and the battery temperature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of monitoring a battery comprising:
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(a) measuring a voltage of the battery;
(b) measuring a current of the battery;
(c) measuring a dynamic parameter of the battery;
(d) obtaining a temperature of the battery;
(e) determining a condition of the battery as a function of the battery voltage, the battery current, the dynamic parameter of the battery and the battery temperature, wherein determining the condition of the battery comprises determining battery state of life, battery cranking state of health, battery reserve state of health, battery defects, battery discharge, battery state of charge, battery predicted discharge voltage, battery predicted discharge voltage at full charge, battery conductance CCA adjusted for temperature, battery conductance CCA adjusted for temperature and discharge, battery % cranking, battery working capacity, battery 20-hour capacity, battery cycles, battery discharge time remaining; and
(f) repeating steps (a) through (e) iteratively, and outputting battery condition information at the end of each iteration.
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Specification