Advanced battery early warning and monitoring system

• US 9,454,888 B2
• Filed: 10/27/2015
• Issued: 09/27/2016
• Est. Priority Date: 01/20/2011
• Status: Active Grant

• Current Assignee: Indiana University Research & Technology Corporation (Indiana University)
• Original Assignee: Indiana University Research & Technology Corporation (Indiana University)
• Inventors: Xie, Jian, Chen, Jie, Li, Lingxi, Chen, Yaobin
• Primary Examiner(s): Wang, Jack K
• Application Number:
  US14/923,852
• Publication Number:
  US 20160055736A1
• Time in Patent Office: 336 Days
• Field of Search: 340/636.12, 340/636.11, 324/427, 370/241
• US Class Current: 1/1
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/374 with means for correcting the measurement for temperature or ageing
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: G08B 21/185 Electrical failure alarms
• CPC Class Codes: G08B 29/181 due to failing power supply

Abstract

Systems, apparatuses and methods for detecting internal cell faults using online and real-time sensing techniques, and providing an accurate and reliable early warning for the incoming failure of battery cells hours or days prior to failure. A system is configured to perform real-time and direct measurement of battery cell parameters of temperature, voltage, and AC impedance through online sensing. These parameters may be simultaneously processed using advanced probabilistic and/or fuzzy logic-based algorithms to provide an early warning for the incoming failure of battery cells in a battery pack. This technology may safeguard the LIB battery packs while allowing them to operate at or near 100% capacity in both transportation and stationary applications.

Claims

1. A system for monitoring and predicting battery faults, comprising:

at least one of a plurality of relays that is used to control the input of voltage to a plurality of battery modules, at least one of a plurality of sensors that is used to detect incoming current or voltage difference, at least one of the plurality of battery modules that is operatively coupled with a set of equalization current lines and a set of voltage sense lines to a pack management system, wherein the at least one of the plurality of battery modules is indexed to provide individual measurements that are forwarded individually to a monitor system, which processes these measurements and provides an output that is utilized to determine a state of-health or a warning of a failure condition.

2. The system of claim 1, wherein the measurements comprise an internal battery temperature, a battery voltage, an impedance, and a current.