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Isolation Monitor performance tools and methods for testing Isolation Monitors

A monitoring and performance technology, applied in electrical testing/monitoring, testing electrical devices in transportation, short-circuit testing, etc., can solve problems such as immediate verification and testing difficulties, battery pack management, and limited available resources

Active Publication Date: 2018-07-13
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an appropriate test environment can only be achieved when a sample traction battery pack or sample vehicle is available, which may already be too late in the development cycle, resulting in significant costs and delays that cannot be avoided and corrected
Furthermore, hardware or software changes during vehicle development may affect isolated monitoring, and due to limited resources available, immediate verification and testing may be difficult to manage at the battery pack and vehicle level

Method used

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  • Isolation Monitor performance tools and methods for testing Isolation Monitors
  • Isolation Monitor performance tools and methods for testing Isolation Monitors
  • Isolation Monitor performance tools and methods for testing Isolation Monitors

Examples

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Embodiment Construction

[0014] Embodiments of the present disclosure are described herein. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. Those of ordinary skill in the art will appreciate that various features shown and described with reference to any one figure can be combined with features shown in one or more other figures to create embodiments not explicitly shown or described . The combinations of features shown provide representative embodiments for conventional applications. Various combinations and modifications of features are consisten...

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Abstract

Systems or methods for testing performance of an isolation monitor for a vehicle having a high voltage traction battery electrical system isolated from a low voltage electrical system include a device for connecting to an isolation / leakage monitor under test. The device includes a current leakage bus, a current leakage array, and a current leakage destination with associated switching elements automatically controlled by a programmed microprocessor to introduce various leakage impedances to a second voltage source or ground and to evaluate performance of the isolation / leakage monitor under test.

Description

technical field [0001] This application relates to testing the performance of hybrid electric vehicle electrical system components in relation to isolation between high voltage electrical systems and low voltage electrical systems. Background technique [0002] High voltage traction batteries can be used in hybrid electric vehicles. Vehicles with traction batteries may include a battery management system (BMS) with a battery electronic control module (BECM) that monitors the isolation between the vehicle's high voltage and low voltage systems. As an example, the BECM may provide a diagnostic indicator and / or Shut down various systems or subsystems. [0003] It is beneficial to estimate the performance of the isolation monitor function early in the BECM hardware and software development cycle. However, an appropriate testing environment can only be achieved when a sample traction battery pack or sample vehicle is available, which may already be too late in the development ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCB60L3/0069B60L2240/545B60L2240/547B60L2240/549B60L50/16B60L58/20G01R31/006G01R35/00G01R31/50G01R31/52Y02T10/70Y02T10/7072
Inventor 迈克尔.爱德华.洛夫特斯
Owner FORD GLOBAL TECH LLC
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