Measuring isolated high voltage and detecting isolation breakdown with measures for self-detection of circuit faults
First Claim
1. A system for making high voltage measurements to measure a voltage of a battery pack and detect of an isolation fault, the system comprising:
- a first resistive divider comprising at least a first resistive element and a second resistive element;
a second resistive divider comprising the second resistive element and a third resistive element;
a plurality of switches comprising a first switch and a second switch coupled between the second resistive element and the battery pack; and
a controller configured to control the plurality of switches to operate in first mode to measure the voltage of the battery pack based on a voltage produced by the first resistive divider, and to control the plurality of switches to operate in at least a second mode to detect an isolation fault based on a voltage produced by the second resistive divider.
10 Assignments
0 Petitions
Accused Products
Abstract
A system for making high voltage measurements to measure a voltage of a battery pack and detect of an isolation fault. The system includes a first resistive divider comprising at least a first resistive element and a second resistive element. The system also includes a second resistive divider comprising the second resistive element and a third resistive element. The system also includes a plurality of switches comprising a first switch and a second switch coupled between the second resistive element and the battery pack. The system further includes a controller configured to control the plurality of switches to operate in first mode to measure the voltage of the battery pack based on a voltage produced by the first resistive divider, and to control the plurality of switches to operate in at least a second mode to detect an isolation fault based on a voltage produced by the second resistive divider.
17 Citations
30 Claims
-
1. A system for making high voltage measurements to measure a voltage of a battery pack and detect of an isolation fault, the system comprising:
-
a first resistive divider comprising at least a first resistive element and a second resistive element; a second resistive divider comprising the second resistive element and a third resistive element; a plurality of switches comprising a first switch and a second switch coupled between the second resistive element and the battery pack; and a controller configured to control the plurality of switches to operate in first mode to measure the voltage of the battery pack based on a voltage produced by the first resistive divider, and to control the plurality of switches to operate in at least a second mode to detect an isolation fault based on a voltage produced by the second resistive divider. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A system for measuring a voltage of a battery pack and a detecting of an isolation fault, the system comprising:
-
a plurality of resistive elements; a plurality of switches connected to the plurality of resistive elements; and a controller configured to control the plurality of switches to operate in first mode to measure the voltage of the battery pack based on a signal produced by coupling the plurality of resistive elements to the battery pack in a first configuration, and to control the plurality of switches to operate in at least a second mode to detect an isolation fault based on a signal produced by coupling the plurality of resistive elements to the battery pack in at least a second configuration. - View Dependent Claims (24, 25, 26)
-
-
27. A system for measuring a magnitude of an isolation fault from a battery pack, the system comprising:
-
a first resistive divider comprising at least a first resistive element and a second resistive element; a second resistive divider comprising the second resistive element and a third resistive element; a plurality of switches coupled between the second resistive element and the battery pack; and a controller configured to control the plurality of switches to operate in a first mode to make a first measurement using the first resistive divider, to make a second measurement using the second resistive divider, and to determine a magnitude of the isolation fault based on the first and second measurements. - View Dependent Claims (28, 29, 30)
-
Specification