SYSTEM AND METHOD FOR DETECTING POWER INTEGRATOR MALFUNCTION

• US 20130190973A1
• Filed: 01/24/2012
• Published: 07/25/2013
• Est. Priority Date: 01/24/2012
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Meng, Ming
• Granted Patent: US 9,061,592 B2
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60K 2360/139 Clusters of instrument input devices
• CPC Class Codes: B60K 35/10 Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: B60K 35/90 Calibration of instruments, e.g. setting initial or reference parameters; Testing of instruments, e.g. detecting malfunction

Abstract

A system and a method for diagnosing and isolating a power integrator malfunction are herein provided. The system includes a controller for processing inputs from vehicle electronic control units (ECUs) to actuate semiconductor switching elements to further actuate vehicle electrical systems. The switching elements are in connection with the controller and actuated by a low current signal to actuate a high current circuit to drive an electrical load. Additional semiconductor devices are connected the switching devices for the purpose of monitoring overcurrent, overtemperature, and electromagnetic interference conditions that may affect the switching elements. A communications module is provided to send and receive communications relating to conditions affecting the switching elements over a communications bus. A display connected to the communications bus is operable to display conditions affecting the switching elements.

Claims

1. A Vehicle Power Integration System comprising:

a power integration controller for processing one or more input signals to the power integration system to produce one or more output signals in accordance with the one or more input signals and for storing an operational status of one or more switching elements on a memory;

one or more switching elements operatively connected to the power integration controller and actuated by the one or more output signals from the power integration controller for actuating one or more loads of a vehicle electrical system;

a communication module operatively connected to the power integration controller for operatively communicating the operational status of the one or more switching elements over a vehicle communications bus system; and

a display operatively connected to the vehicle communications bus system and operable to selectively display the operational status of the one or more switching elements.

2. The vehicle power integration system of claim 1 further comprising a protective casing, the protective casing having an upper part and a lower part whereby the upper part and the lower part interconnect to encase the power integration controller, the one or more switching elements and communication module, and the protective casing provides one or more connection interfaces for operatively connecting the communication module to the vehicle communications bus system.

3. The vehicle power integration system of claim 1, wherein the one or more output signals from the power integrator controller is a low current signal and the low current signal actuates the one or more switching elements to actuate the one or more loads of a vehicle electrical system, whereby a circuit of the one or more loads of a vehicle electrical system is driven by a current greater than the low current signal.

4. The vehicle power integration system of claim 1, wherein the one or more input signals are from a sensor for detecting a predetermined level of electromagnetic interference and the predetermined level of electromagnetic interference is stored on the memory as the operational status of the one or more switching elements.

5. The vehicle power integration system of claim 1, wherein the one or more input signals are provided by electronic control units for other vehicle systems.

6. The vehicle power integration system of claim 1 wherein the communication module comprises a controller and a transceiver.

7. The vehicle power integration system of claim 6, wherein the controller is a CAN controller, the transceiver is a CAN transceiver, and the vehicle communications bus is a CAN-bus.

8. The vehicle power integration system of claim 1, wherein the one or more switching elements are interconnected to at least one other semiconductor device, the at least one other semiconductor device operable to measure overcurrent and overtemperature conditions in the one or more switching elements and the at least one other semiconductor device provides the power integration controller overcurrent and overtemperature condition data, wherein the overcurrent condition data and the overtemperature condition data are stored on the memory as the operational status of the one or more switching elements.

9. The vehicle power integration system of claim 1, wherein the one or more switching elements are solid-state electronic switching elements.

10. The vehicle power integration system of claim 1, wherein the display is a vehicle multimedia device operable to selectively display a diagnostic mode for viewing a textual or a graphical representation of the operational status of the one or more switching elements.

11. The vehicle power integration system of claim 10, wherein selective actuation of buttons on the multimedia device displays the diagnostic mode.

12. A vehicle power integration system comprising:

a power integration controller for processing one or more input signals from one or more vehicle electrical control units to produce one or more low current output signals in accordance to the one or more input signals;

one or more solid-state electronic switching elements electrically connected to the power integration controller via a conductive pathway and actuated by the one or more low current output signals to actuate one or more high current circuits driving one or more electrical loads;

one or more semiconductor devices connected to the power integration controller, the one or more solid-state electronic switching elements to detect overcurrent and overtemperature conditions in the one or more solid-state electronic switching elements and provide overcurrent and overtemperature condition data to the power integration controller;

an electromagnetic interference sensor operably connected to the power integrator controller for sensing a predetermined amount of electromagnetic interference;

a memory device in connection with the power integrator controller for storing the overcurrent data, the overtemperature data and the predetermined amount of electromagnetic interference as one or more error messages;

a CAN-bus communications module electrically connected to the power integrator controller for electrically communicating the one or more error messages over a vehicle CAN-bus; and

a vehicle multimedia display device electrically connected to the vehicle CAN-bus to display the one or more error messages.

13. The vehicle power integration system of claim 12 further comprising a protective casing housing the power integration controller, the one or more solid-state electronic switching elements, the one or more semiconductor devices and the CAN-bus communications module.

14. The vehicle power integration system of claim 12 further comprising the vehicle multimedia display device capable of entering a diagnostic mode for the one or more solid-state electronic switching elements when selected buttons are actuated on the vehicle multimedia display device.

15. A method for integrating vehicle power systems comprising the steps of:

providing input signals from one or more vehicle control units or sensor to a power integration controller;

processing input signals through the power integration controller to provide output signals;

actuating one or more switching elements based on the output signals from the power integration controller;

monitoring the one or more switching elements for overcurrent and overtemperature conditions;

monitoring an electromagnetic interference sensor for a predetermined amount of electromagnetic interference;

saving one or more error message into memory when an overcurrent condition or overtemperature condition is detected in the one or more switching elements or when the predetermine amount of electromagnetic interference is detected by the electromagnetic interference sensor;

broadcasting the one or more error messages saved into memory over a vehicle communications bus to a vehicle display device; and

displaying the one or more error messages for the one or more switching elements on the vehicle display device.