Method for checking the proper method of operating of a current sensor
First Claim
1. A method for checking a proper operation of a current sensor that is configured to measure a battery current, comprising:
- pre-charging at least one electrical component by way of a pre-charge current during a pre-charge phase that commences at a point in time at which the at least one electrical component is connected to a battery;
measuring a first current value at a first point in time using the current sensor;
comparing the first current value with an expected current value at the first point in time that is determined from an expected progression with respect to time of the pre-charge current; and
determining that the current sensor is operating properly in response to the first current value being within a predetermined range of the expected current value at the first point in time.
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Accused Products
Abstract
The disclosure describes a method for checking the proper method of operation of a current sensor which is designed to measure a battery current. During a precharge phase which begins at a time at which at least one electrical component is connected to a battery and during which the electrical component is precharged by a precharge current, at least one measured value provided by the current sensor is compared with an expected current value determined from an expected temporal profile of the precharge current. The disclosure also describes a computation unit and a battery which are designed to carry out the method according to the disclosure.
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Citations
11 Claims
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1. A method for checking a proper operation of a current sensor that is configured to measure a battery current, comprising:
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pre-charging at least one electrical component by way of a pre-charge current during a pre-charge phase that commences at a point in time at which the at least one electrical component is connected to a battery; measuring a first current value at a first point in time using the current sensor; comparing the first current value with an expected current value at the first point in time that is determined from an expected progression with respect to time of the pre-charge current; and determining that the current sensor is operating properly in response to the first current value being within a predetermined range of the expected current value at the first point in time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery comprising:
a computation unit configured to check a proper operation of a current sensor that is configured to measure a battery current by (i) pre-charging at least one electrical component by way of a pre-charge current during a pre-charge phase that commences at a point in time at which the at least one electrical component is connected to a battery, (ii) measuring a first current value at a first point in time using the current sensor, (iii) comparing the first current value with an expected current value at the first point in time that is determined from an expected progression with respect to time of the pre-charge current, and (iv) determining that the current sensor is operating properly in response to the first current value being within a predetermined range of the expected current value at the first point in time. - View Dependent Claims (10)
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11. An electric motor vehicle, comprising:
a battery including a current sensor configured to measure a battery current, and a computation unit configured to perform a method for checking a proper operation of the current sensor by (i) pre-charging at least one electrical component by way of a pre-charge current during a pre-charge phase that commences at a point in time at which the at least one electrical component is connected to a battery, (ii) measuring a first current value at a first point in time using the current sensor, (iii) comparing the first current value with an expected current value at the first point in time that is determined from an expected progression with respect to time of the pre-charge current, and (iv) determining that the current sensor is operating properly in response to the first current value being within a predetermined range of the expected current value at the first point in time.
Specification