Thermal Monitoring of Battery Packs
First Claim
Patent Images
1. A method for monitoring the health of a battery system during charge, discharge, or rest comprising:
- providing one or more electrically connected battery packs, wherein within each battery pack includes battery cells and at least one integrated temperature sensor;
providing means for converting the output from said sensors into electrical signals;
providing additional temperature sensors for measuring the external temperature of said one or more battery packs as an external reference temperature;
providing a battery management system which converts the electrical output of said sensors into temperature readings, thus establishing a temperature profile of the battery pack during charge, discharge, or rest, said battery management system further including a memory, which memory contains a database of predefined normal operating temperature profiles for said one or more battery packs over a variety of external reference temperatures,comparing said temperature profile of said one or more battery packs during charge, discharge, or rest with the healthy thermal profile of said battery pack(s) at the measured external reference temperature; and
,issuing an alert should a sensor within the battery pack detect an excursion from normal operating temperature during such charge, discharge, or rest.
0 Assignments
0 Petitions
Accused Products
Abstract
A computer-aided health monitoring method is described for thermal monitoring of a battery pack that consists of using modeling to determine temperature distributions representative of safe battery operating conditions and a technique is described for comparing sensor measurements to a look-up table of the pre-modeled temperature profiles under various operating conditions. In one embodiment a simplified model of temperature distribution is described.
-
Citations
12 Claims
-
1. A method for monitoring the health of a battery system during charge, discharge, or rest comprising:
-
providing one or more electrically connected battery packs, wherein within each battery pack includes battery cells and at least one integrated temperature sensor; providing means for converting the output from said sensors into electrical signals; providing additional temperature sensors for measuring the external temperature of said one or more battery packs as an external reference temperature; providing a battery management system which converts the electrical output of said sensors into temperature readings, thus establishing a temperature profile of the battery pack during charge, discharge, or rest, said battery management system further including a memory, which memory contains a database of predefined normal operating temperature profiles for said one or more battery packs over a variety of external reference temperatures, comparing said temperature profile of said one or more battery packs during charge, discharge, or rest with the healthy thermal profile of said battery pack(s) at the measured external reference temperature; and
,issuing an alert should a sensor within the battery pack detect an excursion from normal operating temperature during such charge, discharge, or rest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
-
-
11. A method for monitoring the health of a battery system during charge, discharge, or rest comprising:
-
providing one or more electrically connected battery packs, wherein within each battery pack includes battery cells and at least one integrated temperature sensor; providing means for converting the output from temperature sensors into electrical signals; providing additional temperature sensors for measuring the temperature of external reference environment of said one or more battery packs; providing a battery management system which converts the electrical output of said sensors into temperature readings, thus establishing a temperature profile of the battery pack during charge, discharge, or rest, said battery management system further including a memory, which memory contains a database of predefined normal operating profiles for said one or more battery packs over a variety of boundary conditions, comparing said temperature profile of said one or more battery packs during charge, discharge, or rest with the healthy profile of said battery pack at the measured boundary condition; and
,issuing an alert should a sensor within the battery back detect an excursion from normal operating temperature during such charge, discharge, or rest.
-
Specification