Electric vehicle PTC heating system and fault diagnosis method for same

A heating system and fault diagnosis technology, applied in heating/cooling equipment, vehicle components, air handling equipment, etc., can solve problems such as fault classification and fault diagnosis methods are not comprehensive enough

Active Publication Date: 2016-01-20
CHONGQING CHANGAN SUZUKI AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it has the following disadvantages: 1. The patent only diagnoses the faults of the sensor function, and the fault diagnosis method is not comprehensive enough; 2. It does not classify the fault levels and deal with them accordingly

Method used

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  • Electric vehicle PTC heating system and fault diagnosis method for same
  • Electric vehicle PTC heating system and fault diagnosis method for same

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Embodiment Construction

[0040] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, not It indicates or implies that the pointed de...

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Abstract

The invention discloses an electric vehicle PTC heating system and a fault diagnosis method for the same. The system comprises a first controller output end of a whole-vehicle controller and connected with a power supply end of a PTC controller to control on-off of the power supply of the PTC controller, a data end of a whole vehicle controller and connected with a data end of the PTC controller to receive and send a signal to the PTC controller to control start and stop of a PTC heater, a third control output end of the whole vehicle controller and connected with a high-voltage power supply control end of the PTC heater to control on-off of a high-voltage loop of the PTC heater to achieve start and stop of the PTC heater, a control enabling end of the PTC controller and connected with a control enabling end of the PTC heater, a PWM end of the PTC controller and connected with a PWM end of the PTC heater to control output of power of the PTC heater via PWM duty ratio size. Mal-function of the system can be determined via parameter state diagnosis, so safety and reliability can be achieved.

Description

Technical field [0001] The invention relates to an electric vehicle heating system and a fault diagnosis method thereof, in particular to a PTC heating system of an electric vehicle and a fault diagnosis method thereof. Background technique [0002] The electric vehicle canceled the engine and newly developed the whole vehicle heating system to achieve the requirements of passenger compartment heating and defrosting and defogging. The heating system includes: PTC heater, PTC controller, water temperature sensor, circulating water pump, and compensation kettle. But the PTC controller does not have a fault diagnosis function, and cannot diagnose the faults of the water temperature sensor and the PTC heater. [0003] In the current field of electric vehicle technology, the Chinese patent application with the application number CN01801871 and the name "Sensor function fault diagnosis method and device" discloses the following technical solution: a sensor that converts a physical quanti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/22B60H1/00
Inventor 汤皓茗先静罗守荣张宗成张怒涛
Owner CHONGQING CHANGAN SUZUKI AUTOMOBILE
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