Filling method and filling device for cooling liquid in fuel cell vehicle

Abstract

The invention provides a filling method and a filling device for a cooling liquid in a fuel cell vehicle. The filling device comprises a main pipeline, a filling water pump, a flow meter, a liquid level sensor and a filling controller, wherein the main pipeline is connected with a cooling liquid tank and used for conveying the cooling liquid; the filling water pump is arranged on the main pipeline; the flow meter is arranged on the main pipeline and used for detecting the conveying amount of the cooling liquid; the liquid level sensor is arranged in an expansion tank and used for detecting the liquid level of the cooling liquid in the expansion tank; the filling water pump and the flow meter are both connected with the filling controller; the filling controller is in signal connection with a vehicle-mounted controller; and the liquid level sensor and a vehicle-mounted water pump are both connected with the vehicle-mounted controller. Through the combination with the vehicle-mounted water pump exhaust control, the automated filling with the cooling liquid is achieved, so that time to fill a FCV with the cooling liquid can be shortened, the operating difficulty of onsite operating personnel in an assembly plant can be reduced, the vehicle launching and debugging rhythm can be improved, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of fuel cell vehicle production, in particular to a method and device for filling coolant in a fuel cell vehicle. Background technique [0002] For fuel cell vehicles (including passenger cars, logistics vehicles, and bus passenger vehicles), the thermal management system is important for the power, economy, durability, and safety of fuel cell engines (Fuel Cell Engine, hereinafter referred to as FCE). performance is decisive. When the assembly plant is filling the coolant, quick filling and exhaust are the key links, which have a great impact on the off-line, debugging and operation of the whole vehicle. Due to the special composition of FCE, some types of FCE are not suitable for vacuum filling, which makes most of the current FCE vehicles can only use the original manual irrigation method when filling coolant, which is time-consuming, laborious, inefficient, and seriously affects the vehicle off-line Rhythm. [...

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a method and device for filling coolant in a fuel cell vehicle to solve the problem of low efficiency of coolant filling in the prior art

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