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US 2016/0097815 A1Published application
Voltage measurement for multiple cell battery pack
OwnerJohn Manford Wadeinventor
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Abstract
A method and apparatus to detect cell voltage of each of a plurality of battery cells in a rechargeable battery pack is disclosed. The method comprises generating a square wave form with a positive phase and a negative phase, sending the square wave form to a first circuit that is connected to a battery cell and to a second circuit with matching components of the first circuit, and finally driving a matching voltage of the second circuit to become equivalent to the battery cell voltage for measurement.
Claims4
A method for detecting a voltage of a rechargeable battery set, comprising the steps of:
- generating a wave form with a positive phase and a negative phase by a square wave generator;
- sending the wave form to a first circuit including a resistor, a capacitor and the rechargeable battery cell, wherein the positive phase of the wave form flows a first loop from the resistor to the capacitor and to the positive side of the rechargeable battery set, and the negative phase of the wave form flows a second loop from the negative side of the battery set toward the capacitor and then the resistor;
- sending the wave form to a second circuit that has a resistor and a capacitor matching the equivalent components in the first circuit
- driving a matching voltage in the second circuit to become equivalent to the voltage of the rechargeable battery set;
- and
- measuring the matching voltage as the battery voltage.
3 more elements
Dependencies are inferred from the claim text.