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An electric vehicle ptc heating system and its fault diagnosis method

A heating system and fault diagnosis technology, which is applied to heating/cooling equipment, vehicle components, air handling equipment, etc., and can solve problems such as insufficient fault diagnosis methods and fault level classification.

Active Publication Date: 2017-11-17
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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  • An electric vehicle ptc heating system and its fault diagnosis method
  • An electric vehicle ptc heating system and its fault diagnosis method

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element...

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Abstract

The invention discloses a PTC heating system of an electric vehicle and a fault diagnosis method thereof. The system comprises that the first controller output terminal of the vehicle controller is connected with the power supply terminal of the PTC controller, and is used to control the power supply of the PTC controller. off; the data terminal of the vehicle controller is connected to the data terminal of the PTC controller, and is used to receive and send signals to the PTC controller to control the work and stop of the PTC heater; the third control output terminal of the vehicle controller is connected to the PTC controller The high-voltage power supply control terminal of the heater is connected, and the operation and stop of the PTC heater are controlled by controlling the on-off of the high-voltage circuit of the PTC heater; the control enable terminal of the PTC controller is connected with the control enable terminal of the PTC heater, and the PTC heater The PWM terminal of the controller is connected with the PWM terminal of the PTC heater, and the output of the power of the PTC heater is controlled by the duty ratio of the PWM. The present invention diagnoses whether the system fails through the parameter state, which is safer and more reliable.

Description

technical field [0001] The invention relates to a heating system of an electric vehicle 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 cancels the engine, and newly develops the heating system of the whole vehicle to meet the requirements of heating the passenger compartment and defrosting and defogging. The heating system includes: PTC heater, PTC controller, water temperature sensor, circulating water pump, and compensation kettle. However, the PTC controller has no fault diagnosis function, and cannot diagnose the faults of the water temperature sensor and the PTC heater. [0003] In the existing field of electric vehicle technology, the Chinese patent application with the application number CN01801871 and titled "Fault Diagnosis Method and Device for Sensor Function" discloses the following technical solution: a sensor that converts...

Claims

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Application Information

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Patent Type & Authority Patents(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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