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US 10,097,016 B2Granted
System and device for monitoring battery status
AssigneeLittelfuse, Inc.
InventorsAndrew Menzer, Armando Zacarias
Life of this patent
Estimating the term…
Abstract
A system for measuring a current from a battery with a Hall Effect sensor, the current powering a primary load and a secondary load. The system to calculate a status of the battery based on the measured current, then compare the status of the battery to a predetermined value. The system to activate a relay when the status of the battery is below a predetermined value, activation of the relay to prevent the current from powering the secondary load.
Claims18
A battery monitoring system, comprising:
- a housing having an input port, an output port, and a communication port, the housing to enclose a printed circuit board (PCB);
- an input terminal to extend through the input port of the housing and electrically connect to a positive terminal of a battery;
- an output terminal to extend through the output port of the housing and electrically connect to the input terminal and a primary load;
- a transducer communicatively coupled to the PCB, the transducer to sense an electric field generated by a current flowing from the positive terminal of the battery through the input terminal to the primary load and a secondary load;
- a relay communicatively coupled to the PCB, the relay configured to selectively prevent current from reaching the secondary load;
- a control link with first and second ends, the control link to extend through the communication port of the housing, the first end of the control link communicatively coupled to the PCB;
- and
- an interface module coupled to the second end of the control link, the interface module configured to indicate a status of the battery, wherein the status of the battery is based on the sensed electric field, the status of the battery including one or more of a current charge capacity of the battery as a percent of an original change, capacity of the battery, a temperature of the battery, and an estimated amount of time until a supply voltage of the battery drops below a predetermined value.
5 more elements
An apparatus, comprising:
- a housing having an input port and an output port, the housing to enclose a printed circuit board (PCB);
- a stud including an input terminal to extend through the input port of the housing and electrically connect to a battery, an output terminal to extend through the output port of the housing and electrically connect to a primary load
- a transducer coupled to the PCB and positioned on the PCB such that at least a portion of the transducer is located directly adjacent the stud, the transducer to measure a current in the stud;
- and
- an interface module coupled to the PCB and configured to indicate a status of the battery, wherein the status of the battery is based on a sensed electric field, the status of the battery including one or more of a current charge capacity of the battery as a percent of an original change, capacity of the battery, a temperature of the battery, and an estimated amount of time until a supply voltage of the battery drops below a predetermined value.
2 more elements
A method, comprising:
- measuring a current from a battery with a Hall Effect sensor, the current powering a primary load and a secondary load;
- determining a status of the battery based on the measured current;
- comparing the status of the battery to a predetermined value;
- activating a relay when the status of the battery is below the predetermined value, activation of the relay to prevent the current from powering the secondary load;
- and
- indicating the status of the battery via an interface module, the status of the battery including one or more of a current charge capacity of the battery as a percent of an original change, capacity of the battery, a temperature of the battery, and an estimated amount of time until a supply voltage of the battery drops below a predetermined value.
3 more elements
Dependencies are inferred from the claim text.