Battery with integrated power management system and scalable battery cutoff
First Claim
1. A battery system comprising:
- a battery housing with first and second voltage output terminals;
a plurality of rechargeable battery cells within the battery housing and having first and second voltage terminals;
a power management system for generating an external control signal and an internal control signal based upon monitored operating parameters of the plurality of rechargeable battery cells, said external control signal for controlling an external power source and/or an external load, said power management system forming an integral part of the battery system;
a cutoff switch circuit within the battery housing and for making and breaking a conductive path between the first voltage terminal of the plurality of battery cells and the first voltage output terminal of the battery housing in response to the internal control signal from the power management system, where the cutoff switch circuit comprises temperature sensing devices and a plurality of metal-oxide semiconductor field effect transistors (MOSFETs) arranged as parallel groups of MOSFETs and operating as a single switch; and
a controller including executable instructions stored in non-transitory memory to measure a voltage across the MOSFETs, determine a drain-source resistance of one MOSFET in the plurality of MOSFETs from a temperature of the one MOSFET sensed via one of the temperature sensing devices, and determine current flow through the one MOSFET based on the voltage across the MOSFETs and the drain-source resistance of the one MOSFET.
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Accused Products
Abstract
The present disclosure relates battery with an integrated power management system and scalable cutoff component, the battery system including a battery housing with first and second voltage output terminals, a plurality of rechargeable battery cells within the battery housing and having first and second voltage terminals; a power management system for generating an external control signal and an internal control signal based upon monitored operating parameters of the plurality of rechargeable battery cells, said external control signal for controlling an external power source and/or an external load, said power management system forming an integral part of the battery system; and a cutoff switch circuit within the battery housing and for making and breaking a conductive path between the first voltage terminal of the plurality of battery cells and the first voltage output terminal of the battery housing in response the internal control signal from the battery management system.
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Citations
11 Claims
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1. A battery system comprising:
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a battery housing with first and second voltage output terminals; a plurality of rechargeable battery cells within the battery housing and having first and second voltage terminals; a power management system for generating an external control signal and an internal control signal based upon monitored operating parameters of the plurality of rechargeable battery cells, said external control signal for controlling an external power source and/or an external load, said power management system forming an integral part of the battery system; a cutoff switch circuit within the battery housing and for making and breaking a conductive path between the first voltage terminal of the plurality of battery cells and the first voltage output terminal of the battery housing in response to the internal control signal from the power management system, where the cutoff switch circuit comprises temperature sensing devices and a plurality of metal-oxide semiconductor field effect transistors (MOSFETs) arranged as parallel groups of MOSFETs and operating as a single switch; and a controller including executable instructions stored in non-transitory memory to measure a voltage across the MOSFETs, determine a drain-source resistance of one MOSFET in the plurality of MOSFETs from a temperature of the one MOSFET sensed via one of the temperature sensing devices, and determine current flow through the one MOSFET based on the voltage across the MOSFETs and the drain-source resistance of the one MOSFET. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification