Differential Battery Testers
AssigneeE-Xteq Europe
InventorsMorgan Brebant, Frederic Platel, Jean Yves Penouty
Life of this patent
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Abstract
Systems and methods for battery testing are described. Some of the methods for battery testing include applying a first load impedance to a battery, applying a second load impedance to a reference voltage source, measuring a voltage between a positive terminal of the battery and a positive terminal of the reference voltage source, wherein a negative terminal of the battery is connected via a conductor to a negative terminal of the reference voltage source, and determining a condition of the battery based on the measured voltage.
Claims20
A circuit for battery testing, comprising:
- a first connector configured to electrically couple to a positive terminal of a battery;
- a second connector configured to electrically couple to a negative terminal of the battery;
- a reference voltage source with a positive reference terminal and a negative reference terminal;
- a conductor connecting the second connector to the negative reference terminal;
- a voltmeter configured to measure voltage between a first input node and a second input node, wherein the first input node is connected to the first connector and wherein the second input node is connected to the positive reference terminal;
- a first switch in series with a first load impedance connected between the first connection and the second connection;
- a second switch in series with a second load impedance connected between the positive reference terminal and the negative reference terminal;
- and
- a processor connected to the voltmeter and configured to:
- control the first switch and the second switch to selectively apply the first load impedance to the battery and the second load impedance to the reference voltage source,
- receive one or more measurements of voltage between the first input node and the second input node, and
- determine a condition of the battery based on the one or more measurements of voltage between the first input node and the second input node.
A method for battery testing, comprising:
- applying a first load impedance to a battery;
- applying a second load impedance to a reference voltage source;
- measuring a voltage between a positive terminal of the battery and a positive terminal of the reference voltage source, wherein a negative terminal of the battery is connected via a conductor to a negative terminal of the reference voltage source;
- and
- determining a condition of the battery based on the measured voltage.
An apparatus for battery testing, comprising:
- a first connector configured to electrically couple to a positive terminal of a battery;
- a second connector configured to electrically couple to a negative terminal of the battery;
- a reference voltage source with a positive reference terminal and a negative reference terminal;
- a voltmeter configured to measure voltage between a first input node and a second input node, wherein the first input node is connected to the first connector and wherein the second input node is connected to the positive reference terminal;
- and
- a processor connected to the voltmeter and configured to:
- selectively apply a first load impedance to the battery and a second load impedance to the reference voltage source,
- receive one or more measurements of voltage between the first input node and the second input node, and
- determine a condition of the battery based on the one or more measurements of voltage between the first input node and the second input node.
Dependencies are inferred from the claim text.