BALANCING CIRCUIT WITH INTEGRAL CELL TEMPERATURE SENSING FOR A BATTERY

BALANCING CIRCUIT WITH INTEGRAL CELL TEMPERATURE SENSING FOR A BATTERY

A rechargeable battery system including at least one energy storage cell having a positive terminal and a negative terminal, a resistive element and a circuit configured to allow current to flow through the resistive element. A monitoring circuit measures the current flow through, and a voltage prod...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Hess, Robert A, Weiss, Darrin M
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
SYSTEMS FOR STORING ELECTRIC ENERGY
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:A rechargeable battery system including at least one energy storage cell having a positive terminal and a negative terminal, a resistive element and a circuit configured to allow current to flow through the resistive element. A monitoring circuit measures the current flow through, and a voltage produced across, the resistive element and calculates the resistance of the resistive element. The current flow through the resistive element produces heat by raising the temperature of the resistive element. The current flow through the resistive element may be managed by a balancing circuit. A current sense resistor may be connected in series with a balancing resistor and a transistor turns on a balancing operation through balancing resistor. The monitoring circuit may determine the temperature of the resistive element based on the calculated resistance. The battery monitoring circuit may activate a battery cooling system based on the temperature of the resistive element.