Capacity independent fast charging of batteries
First Claim
1. A battery charging monitor comprising:
- a first sensor and a second sensor electrically connected to at least one battery cell of at least one battery, wherein the first sensor is configured to measure an internal temperature of the at least one battery cell and the second sensor is configured to measure a cell voltage of the at least one battery cell; and
a microcontroller configured to;
determine a rate of change of the internal temperature of the at least one battery cell based on the internal temperature of the at least one battery cell;
determine a state of charge of the at least one battery cell based on the rate of change of the internal temperature;
cause a charging rate to be applied, by a battery charger, to the at least one battery cell based on the determined state of charge;
compare the cell voltage to a voltage threshold; and
cause the charging rate to be reduced in an instance in which the cell voltage exceeds the voltage threshold.
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Accused Products
Abstract
A battery charging monitor is provided including a non-invasive sensor electrically connected to at least one battery cell of at least one battery, which is configured to measure an internal temperature of the at least one battery cell. The non-invasive internal temperature sensor is connected to the microcontroller that is configured to determine a rate of change of the internal temperature of the at least one battery cell based on the internal temperature of the at least one battery cell, determine a state of charge of the at least one battery cell based on the rate of change of the internal temperature, and cause a charging rate to be applied, by a battery charger, to the at least one battery cell based on the determined state of charge.
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Citations
19 Claims
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1. A battery charging monitor comprising:
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a first sensor and a second sensor electrically connected to at least one battery cell of at least one battery, wherein the first sensor is configured to measure an internal temperature of the at least one battery cell and the second sensor is configured to measure a cell voltage of the at least one battery cell; and a microcontroller configured to; determine a rate of change of the internal temperature of the at least one battery cell based on the internal temperature of the at least one battery cell; determine a state of charge of the at least one battery cell based on the rate of change of the internal temperature; cause a charging rate to be applied, by a battery charger, to the at least one battery cell based on the determined state of charge; compare the cell voltage to a voltage threshold; and cause the charging rate to be reduced in an instance in which the cell voltage exceeds the voltage threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A battery charging monitor comprising:
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a sensor electrically connected to at least one battery cell of at least one battery, wherein the sensor is configured to measure an internal temperature of the at least one battery cell; and a microcontroller configured to; compare the internal temperature of the at least one battery cell to one or more charging temperature thresholds; and cause a charging rate to be applied, by a battery charger, to the at least one battery cell based on the comparison of the internal temperature to the one or more charging temperature thresholds, wherein causing the charging rate to be applied comprises; applying a first charging rate in an instance in which the state of charge is below a first charging temperature threshold, reducing the charging rate, and applying a second charging rate in an instance in which the first charging temperature threshold has been met. - View Dependent Claims (15, 16, 17, 18)
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19. A battery charging monitor comprising:
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a sensor electrically connected to at least one battery cell of at least one battery, wherein the sensor is configured to measure an internal temperature of the at least one battery cell; and a microcontroller configured to; determine a rate of change of the internal temperature of the at least one battery cell based on the internal temperature of the at least one battery cell; determine a state of charge of the at least one battery cell based on the rate of change of the internal temperature; and cause a charging rate to be applied, by a battery charger, to the at least one battery cell based on the determined state of charge, wherein causing the charging rate to be applied to the at least one battery cell comprises; applying a first charging rate in an instance in which the state of charge is below a first state of charge threshold, and applying a second charging rate in an instance in which the state of charge is equal to or above the state of charge threshold.
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Specification