METHOD OF CONTROLLING SECONDARY BATTERY
First Claim
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1. A method of controlling a secondary battery, the method comprising:
- a sampling operation measuring a first current value by sampling a current from the secondary battery;
a first load current condition determining operation comparing a maximum load current value of a controlling unit of the secondary battery with the first current value;
a switch driving operation turning on and off a switch of the second battery as a result of the first current value being greater than the maximum load current; and
a second load current condition determining operation comparing a second current value of the switch driving operation with the first current value.
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Abstract
A method of controlling a secondary battery is disclosed. The method includes repeatedly disconnecting and connecting the secondary battery and a load as a result of a sensed current being greater than a maximum load current value, and maintaining the connected or the disconnected state according to a comparison of a second sensed current and the maximum load current value.
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Citations
20 Claims
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1. A method of controlling a secondary battery, the method comprising:
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a sampling operation measuring a first current value by sampling a current from the secondary battery; a first load current condition determining operation comparing a maximum load current value of a controlling unit of the secondary battery with the first current value; a switch driving operation turning on and off a switch of the second battery as a result of the first current value being greater than the maximum load current; and a second load current condition determining operation comparing a second current value of the switch driving operation with the first current value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a secondary battery driving a load, the method comprising:
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measuring a first current value from the secondary battery; comparing the first current value to a maximum load current value; disconnecting the load from the secondary battery as a result of the first current value being greater than the maximum load current; connecting the load to the secondary battery; measuring a second current value from the secondary battery subsequent to connecting the load; comparing the second current value to the first current value; and maintaining the connection of the secondary battery and the load as a result of the second current value being less than the first current value, and disconnecting the secondary battery and the load as a result of the second current value being greater than or equal to the first current value. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An electric tool system, comprising:
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a battery; a load for the battery; a switching unit; a current detecting unit, configured to sense current from the battery to the load; and a controlling unit, configured to generate a control signal for the switching unit according to a comparison of the sensed current of the current detecting unit and a maximum load current value, wherein the switching unit is configured to selectively connect the secondary battery to the load according to the control signal, and wherein the controlling unit is configured to generate the control signal so as to repeatedly disconnect and connect the battery and the load as a result of the sensed current being greater than the maximum load current value, and to maintain the connected or the disconnected state according to a comparison of a second sensed current of the current detecting unit and the maximum load current value. - View Dependent Claims (18, 19, 20)
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Specification