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US 10,117,556 B2Granted
Battery discharge control system, control method thereof, and cleaner including the same
AssigneeLG Electronics Inc.
InventorsHoyong Jang, Seokhee Cho, Dukho Ham
Life of this patent
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Abstract
Provided is a battery discharge control system including a voltage sensor configured to sense a voltage across a battery and a controller configured to calculate an expected voltage based on a recovery voltage of the battery and the voltage across the battery, compare the expected voltage and a predetermined final discharge voltage, and determine whether to apply power to a load having the battery as a power source.
Claims20
A battery discharge control system comprising:
- a voltage sensor configured to sense a voltage across a battery;
- a current sensor configured to sense an output current of the battery;
- and
- a controller configured to control battery discharge to a load using the sensed voltage across the battery, wherein an expected voltage is calculated based on a recovery voltage of the battery and the voltage across the battery, the expected voltage and a predetermined final discharge voltage are compared, and power applied to the load having the battery as a power source is controlled based on the comparison,
- wherein the controller uses an output current of the battery to detect a final discharge current, and controls the output current of the battery to be lower than the final discharge current after the voltage across the battery reaching the predetermined final discharge voltage until when the expected voltage is lower than the predetermined final discharge voltage.
2 more elements
A control method of a battery discharge control system, the control method including:
- sensing a voltage across a battery by a voltage sensor;
- sensing an output current of the battery by a current sensor;
- calculating an expected voltage based on a recovery voltage of the battery and the voltage across the battery by a controller;
- comparing the expected voltage and a predetermined final discharge voltage by the controller;
- and
- controlling power applied to a load having the battery as a power source by the controller,
- wherein the calculating of the expected voltage comprises using the output current of the battery to detect a final discharge current,
- wherein the controlling power applied to a load having the battery as a power source comprises controlling the output current of the battery to be lower than the final discharge current after the voltage across the battery reaching the predetermined final discharge voltage until when the expected voltage is lower than the predetermined final discharge voltage.
5 more elements
Dependencies are inferred from the claim text.