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Cooling liquid level detection method and device and vehicle

A detection method and coolant technology, applied in the field of vehicles, can solve problems such as inaccurate coolant level detection

Active Publication Date: 2020-02-25
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this disclosure is to provide a coolant level detection method, device and vehicle to solve the problem of inaccurate coolant level detection caused by the attachment of the liquid level probe in the related art

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  • Cooling liquid level detection method and device and vehicle
  • Cooling liquid level detection method and device and vehicle
  • Cooling liquid level detection method and device and vehicle

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Embodiment Construction

[0064] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0065] First, the case where the liquid level sensor in the present disclosure is installed in the cooling liquid pot will be explained. Reference figure 1 The liquid level sensor is installed on the side wall of the cooling liquid pot 13, and the bottom end of the liquid level sensor probe 12 is immersed in the cooling liquid 14 when the cooling liquid 14 is sufficient. The PIN pin 11 of the liquid level sensor is electrically connected to the liquid level detection circuit, so the liquid level of the coolant can be known through the output voltage of the liquid level detection circuit.

[0066] The liquid level detection circuit of the present disclosure is suc...

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Abstract

The invention relates to a cooling liquid level detection method and device and a vehicle, and aims at avoiding the condition that the detection is incorrect as attachments exist on the surfaces of liquid level probes, and then ensuring the correctness of the cooling liquid level detection. The cooling liquid level detection method comprises the steps of obtaining first output voltage of a liquidlevel detection circuit when a liquid level probe is located at a first liquid level; turning the liquid level probe to a second liquid level when the first output voltage reaches pre-warning output voltage, wherein the second liquid level is lower than the first liquid level; obtaining second output voltage of the liquid level detection circuit when the liquid level probe is located at the secondliquid level; determining a current voltage difference value between the first output voltage and the second output voltage; obtaining a standard voltage difference value, wherein the standard voltage difference value is a voltage difference value output by a standard liquid level detection circuit when the standard liquid level probe is located at the first liquid level and the second liquid level; and determining a liquid level detection result for cooling liquid according to the current voltage difference value and the standard voltage difference value.

Description

Technical field [0001] The present disclosure relates to the technical field of vehicles, and in particular, to a method, device and vehicle for detecting coolant level. Background technique [0002] In order to ensure the normal operation of equipment with engines such as automobiles and generators, coolant is indispensable. It circulates in the engine cooling system to take away the excess heat generated during engine operation, so that the engine can operate at normal operating temperature. Running. When the coolant is insufficient, the engine water temperature will be too high, causing damage to the engine parts. Therefore, in order to ensure the normal operation of the vehicle, it is necessary to monitor the level of the coolant. [0003] In the related technology, it is mainly to monitor the liquid level of the coolant by setting a liquid level sensor and set a liquid level alarm point. If the liquid level detected by the liquid level sensor is lower than the liquid level a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/24
CPCG01F23/24
Inventor 刘婷周广东郝振宇
Owner BEIQI FOTON MOTOR CO LTD
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