METHODS AND APPARATUS FOR BATTERY TESTING
First Claim
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1. A method for determining a state of an electrochemical battery, the method comprising determining a magnetic susceptibility of a component of the battery.
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Abstract
Methods and apparatus for testing electrical storage batteries monitor magnetic susceptibility of components of the storage batteries. In some embodiments, magnetic susceptibility of a plate in a lead-acid battery is determined to provide an indication of the state of charge of the battery.
49 Citations
54 Claims
- 1. A method for determining a state of an electrochemical battery, the method comprising determining a magnetic susceptibility of a component of the battery.
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8. A method for determining a state of an electrochemical battery, the method comprising:
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exposing a component of the battery to a first magnetic field, the first magnetic field time-varying at a first frequency; measuring a first induced magnetic field created in the component by the first magnetic field; and determining a state of the battery based at least in part on a magnitude of the first induced magnetic field. - View Dependent Claims (9, 10, 11, 12)
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18. Apparatus for determining a state of an electrochemical battery, the apparatus comprising:
a magnetic field detector positionable to determine a magnetization of a component of the electrochemical battery as a result of an applied magnetic field. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- 41. A sensor assembly for use with a battery, the sensor assembly comprising a magnetic field source and a magnetic field detector.
- 46. An electrical battery comprising one or more electrodes, the battery characterized by a magnetic field detector located inside a case of the battery.
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53. (canceled)
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54. (canceled)
Specification