Systems and methods for an open wire scan
First Claim
1. A method for detecting an open connection between a circuit device and a multi-cell battery, comprising the steps of:
- measuring a voltage at each input of a plurality of inputs on the circuit device from the multi-cell battery pack at the beginning and end of a time period;
calculating a difference between beginning measurements made at the beginning of the time period and end measurements made at the end of the time period;
detecting the open connection between the circuit device and the multi-cell battery of at least one of the plurality of inputs by observing positive and negative peak patterns produced by the difference calculations;
selectively activating at least one device for turning on and off at least one current source device, the at least one current source device respectively connected with one of the plurality of inputs from the multi-cell battery; and
applying a current through each of the plurality of inputs from the at least one current source device.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for an open wire scan are provided. In certain embodiments, An apparatus comprising a circuit includes a plurality of inputs for connecting with a plurality of outputs of a multi-cell battery pack; and an open connection detection circuit, formed within the circuit, for detecting an open connection on at least one of the plurality of inputs connected to the multi-cell battery pack and generating a fault condition responsive thereto. The open connection detection circuit comprises at least one current source device; and at least one device for turning on and off the at least one current source device. The open connection detection circuit also comprises at least one amplifier; an analog to digital converter; and a control logic circuit.
25 Citations
8 Claims
-
1. A method for detecting an open connection between a circuit device and a multi-cell battery, comprising the steps of:
- measuring a voltage at each input of a plurality of inputs on the circuit device from the multi-cell battery pack at the beginning and end of a time period;
calculating a difference between beginning measurements made at the beginning of the time period and end measurements made at the end of the time period;
detecting the open connection between the circuit device and the multi-cell battery of at least one of the plurality of inputs by observing positive and negative peak patterns produced by the difference calculations;
selectively activating at least one device for turning on and off at least one current source device, the at least one current source device respectively connected with one of the plurality of inputs from the multi-cell battery; and
applying a current through each of the plurality of inputs from the at least one current source device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- measuring a voltage at each input of a plurality of inputs on the circuit device from the multi-cell battery pack at the beginning and end of a time period;
Specification