Battery cell assembly with a thin profile sensor
First Claim
1. A battery cell assembly, comprising:
- a pouch-type battery cell having a housing and first and second electrical terminals extending outwardly from the housing;
a thin profile sensor having a flexible plastic sheet, a microprocessor, a sensing circuit, a heat generating circuit, and a data transmitting circuit;
the microprocessor being operably coupled to the sensing circuit, the heat generating circuit, and the data transmitting circuit;
the microprocessor, the sensing circuit, the heat generating circuit, and the data transmitting circuit being disposed on and coupled to a first side of the flexible plastic sheet, the flexible plastic sheet further having an adhesive portion disposed on the first side on a peripheral region of the flexible plastic sheet, and adhesive portion adhering at least a portion of the first side of the flexible plastic sheet to an exterior surface of the housing of the pouch-type battery cell such that the microprocessor, the sensing circuit, and the heat generating circuit are disposed between the flexible plastic sheet and the exterior surface of the housing of the pouch-type battery cell;
the microprocessor being electrically coupled to the first and second electrical terminals of the pouch-type battery cell, the first and second electrical terminals supplying an operational voltage to the microprocessor;
the microprocessor being programmed to determine a first voltage value corresponding to an open circuit voltage of the pouch-type battery cell between the first and second electrical terminals;
the microprocessor being further programmed to determine a second voltage value corresponding to a first voltage of the pouch-type battery cell between the first and second electrical terminals when the pouch-type battery cell is supplying electrical current through the heat generating circuit;
the microprocessor being further programmed to determine a current value corresponding to an electrical current level flowing through the pouch-type battery cell when the pouch-type battery cell is supplying the electrical current through the heat generating circuit;
the microprocessor being further programmed to determine an internal resistance value corresponding to an internal resistance level of the pouch-type battery cell based on the first voltage value, the second voltage value, and the current value;
the microprocessor being further programmed to store the internal resistance value in a memory device; and
the microprocessor being further programmed to generate a control signal to induce the data transmitting circuit to transmit a signal having a first binary message with a battery cell identifier value and the internal resistance value of the battery cell therein.
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Accused Products
Abstract
A battery cell assembly having a battery cell and a thin profile sensor is provided. The battery cell has a housing and first and second electrical terminals. The thin profile sensor has a flexible plastic sheet, and a microprocessor, a sensing circuit, and a heat generating circuit coupled to the flexible plastic sheet. The flexible plastic sheet is coupled to the battery cell. The microprocessor determines a first voltage value representing an open circuit voltage, and a second voltage value of the battery cell when the battery cell is supplying electrical current through the heat generating circuit. The microprocessor determines a current value when the battery cell is supplying the electrical current through the heat generating circuit, and determines an internal resistance value based on the first voltage value, the second voltage value, and the current value.
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Citations
18 Claims
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1. A battery cell assembly, comprising:
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a pouch-type battery cell having a housing and first and second electrical terminals extending outwardly from the housing; a thin profile sensor having a flexible plastic sheet, a microprocessor, a sensing circuit, a heat generating circuit, and a data transmitting circuit;
the microprocessor being operably coupled to the sensing circuit, the heat generating circuit, and the data transmitting circuit;
the microprocessor, the sensing circuit, the heat generating circuit, and the data transmitting circuit being disposed on and coupled to a first side of the flexible plastic sheet, the flexible plastic sheet further having an adhesive portion disposed on the first side on a peripheral region of the flexible plastic sheet, and adhesive portion adhering at least a portion of the first side of the flexible plastic sheet to an exterior surface of the housing of the pouch-type battery cell such that the microprocessor, the sensing circuit, and the heat generating circuit are disposed between the flexible plastic sheet and the exterior surface of the housing of the pouch-type battery cell;the microprocessor being electrically coupled to the first and second electrical terminals of the pouch-type battery cell, the first and second electrical terminals supplying an operational voltage to the microprocessor; the microprocessor being programmed to determine a first voltage value corresponding to an open circuit voltage of the pouch-type battery cell between the first and second electrical terminals; the microprocessor being further programmed to determine a second voltage value corresponding to a first voltage of the pouch-type battery cell between the first and second electrical terminals when the pouch-type battery cell is supplying electrical current through the heat generating circuit; the microprocessor being further programmed to determine a current value corresponding to an electrical current level flowing through the pouch-type battery cell when the pouch-type battery cell is supplying the electrical current through the heat generating circuit; the microprocessor being further programmed to determine an internal resistance value corresponding to an internal resistance level of the pouch-type battery cell based on the first voltage value, the second voltage value, and the current value; the microprocessor being further programmed to store the internal resistance value in a memory device; and the microprocessor being further programmed to generate a control signal to induce the data transmitting circuit to transmit a signal having a first binary message with a battery cell identifier value and the internal resistance value of the battery cell therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A battery cell assembly, comprising:
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a pouch-type battery cell having a pouch-type housing and first and second electrical terminals extending outwardly from the pouch-type housing; a thin profile sensor having a flexible plastic sheet, a microprocessor, a sensing circuit, a heat generating circuit, and a data transmitting circuit;
the microprocessor being operably coupled to the sensing circuit, the heat generating circuit, and the data transmitting circuit;
the microprocessor, the sensing circuit, the heat generating circuit, and the data transmitting circuit being disposed on and coupled to the flexible plastic sheet, the flexible plastic sheet being disposed on and coupled to an exterior surface of the pouch-type housing of the pouch-type battery cell;the sensing circuit having a resistive trace disposed directly on and coupled to the flexible plastic sheet, the resistive trace having at least first and second resistive trace portions spaced apart from one another, the sensing circuit generating a first voltage indicative of a temperature level of the pouch-type battery cell; the heat generating circuit having a heating element trace being disposed directly on and coupled to the flexible plastic sheet, the heating element trace having at least first and second heating element trace portions spaced apart from one another, the first resistive trace portion being disposed between the first and second heating element trace portions on the flexible plastic sheet, the heating element trace being electrically coupled to the microprocessor; the microprocessor being electrically coupled to the first and second electrical terminals of the pouch-type battery cell, the first and second electrical terminals supplying an operational voltage to the microprocessor; the microprocessor being programmed to determine a first voltage value corresponding to an open circuit voltage of the pouch-type battery cell between the first and second electrical terminals; the microprocessor being further programmed to determine a second voltage value corresponding to a first voltage of the pouch-type battery cell between the first and second electrical terminals when the pouch-type battery cell is supplying electrical current through the heat generating circuit; the microprocessor being further programmed to determine a current value corresponding to an electrical current level flowing through the pouch-type battery cell when the pouch-type battery cell is supplying the electrical current through the heat generating circuit; the microprocessor being further programmed to determine an internal resistance value corresponding to an internal resistance level of the pouch-type battery cell based on the first voltage value, the second voltage value, and the current value; and the microprocessor being further programmed to generate a control signal to induce the data transmitting circuit to transmit a signal having a first binary message with a battery cell identifier value and the internal resistance value of the pouch-type battery cell therein. - View Dependent Claims (14, 15)
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16. A battery cell assembly, comprising:
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a battery cell having a housing and first and second electrical terminals extending outwardly from the housing; a thin profile sensor having a flexible plastic sheet, a microprocessor, a sensing circuit, and a data transmitting circuit;
the microprocessor being operably coupled to the sensing circuit and to the data transmitting circuit;the flexible plastic sheet having a first side and a second side;
the flexible plastic sheet further having an adhesive portion disposed on a peripheral region on the first side of the flexible plastic sheet, the adhesive portion adhering the first side of the flexible plastic sheet to the exterior surface of the housing of the battery cell;the microprocessor, the sensing circuit, and the data transmitting circuit being coupled to the first side of the flexible plastic sheet such that the microprocessor, the sensing circuit, and the data transmitting circuit are disposed between the flexible plastic sheet and the exterior surface of the housing of the battery cell;
the microprocessor, the sensing circuit, and the data transmitting circuit being further disposed within a region on the first side of the flexible plastic sheet that is peripherally surrounded by the adhesive portion;the sensing circuit having a resistive trace disposed directly on and coupled to the first side of the flexible plastic sheet, the resistive trace having a resistance level that varies based on a temperature level of the battery cell, the sensing circuit generating a first voltage indicative of the temperature level of the battery cell; the microprocessor being electrically coupled to the first and second electrical terminals of the battery cell, the first and second electrical terminals supplying an operational voltage to the microprocessor; the microprocessor being programmed to determine a first voltage value corresponding to an open circuit voltage of the battery cell between the first and second electrical terminals; the microprocessor being further programmed to determine a second voltage value corresponding to a first voltage of the battery cell between the first and second electrical terminals when the battery cell is supplying electrical current through the heat generating circuit; the microprocessor being further programmed to determine a current value corresponding to an electrical current level flowing through the battery cell when the battery cell is supplying the electrical current through the heat generating circuit; the microprocessor being further programmed to determine an internal resistance value corresponding to an internal resistance level of the battery cell based on the first voltage value, the second voltage value, and the current value; and the microprocessor being further programmed to generate a control signal to induce the data transmitting circuit to transmit a signal having a first binary message with a battery cell identifier value and the internal resistance value of the battery cell therein. - View Dependent Claims (17, 18)
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Specification