Method and means for contactor monitoring in electric vehicle supply equipment
AssigneeAeroVironment, Inc.
InventorMing Bai
Life of this patent
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Abstract
In one implementation, a method is provided for contactor monitoring and control in electric vehicle supply equipment, which includes updating an open error count and a close error count based on a detected condition of the contactor. The method also includes determining a detected state of the contactor by comparing the open error count and the close error count to maximum and minimum values. The method further includes performing at least one of controlling the state of the contactor based on the determined contactor state, or providing a visual indicator based on the determined contactor state.
Claims22
A method for contactor monitoring and control in electric vehicle supply equipment, the method comprising:
- a) updating contactor error counts based on a detected condition of a contactor comprising:
- i) updating an open error count;
- and
- ii) updating a close error count;
- b) determining a detected state of the contactor by comparing the open error count and the close error count to maximum and minimum values;
- and
- c) performing at least one of:
- (i) controlling the state of the contactor based on the determined contactor state;
- or (ii) providing a visual indicator based on the determined contactor state.
-17. (canceled)
-49. (canceled)
A method for contactor monitoring and control in electric vehicle supply equipment, the method comprising:
- a) updating contactor error counts based on a detected condition of a contactor comprising:
- i) updating an open error count;
- and
- ii) updating a close error count;
- b) determining a detected state of the contactor by comparing the open error count and the close error count to maximum and minimum values;
- c) performing at least one of:
- (i) controlling the state of the contactor based on the determined contactor state;
- or (ii) providing a visual indicator based on the determined contactor state and
- d) wherein determining a detected state of the contactor comprises determining the detected state is one of (i) closed when the open error count is greater than or equal to a maximum value and the close error count is equal to a minimum value;
- (ii) unknown when the open error count is greater than or equal to a maximum value and the close error count is greater than or equal to a maximum value;
- or (iii) open when the open error count is equal to a minimum value and the close error count is greater than or equal to a maximum value.
Dependencies are inferred from the claim text.