Active adaptation and self-diagnosis method of off-board charger and its cooling system

Abstract

The invention discloses an off-board charger and an active adaption and self-diagnosis method of a cooling system thereof. The off-board charger comprises a cabinet body and a charging module, a master control module, a temperature sensor and a plurality of cooling fans which are arranged in the cabinet body, wherein the charging module, the cooling fans and the temperature sensor are electricallyconnected with the master control module, the master control module is used for acquiring an output power of the charging module, an ambient temperature acquired by a first sensor and internal equipment temperature data acquired by a second sensor, comparing and analyzing the acquired data and standard reference data stored in advance and generating and sending a corresponding execution instruction to a corresponding execution unit when the acquired internal equipment temperature exceeds a reasonable range of a corresponding internal equipment temperature expected value in the standard reference data, and the execution unit is used for responding the execution instruction. By the off-board charger, the execution instruction can be rapidly made to ensure safety running of the equipment bythe master control module according to a running state of the equipment, and early warning can be performed when a fault occurs in the cooling system.

Description

technical field [0001] The invention relates to a charging device, in particular to a cooling system of an off-vehicle charger and its self-diagnosis, and belongs to the technical field of electric vehicle charging. Background technique [0002] The performance of the heat dissipation system directly affects the operating status and service life of AC and DC charging equipment. However, when the heat dissipation system fails or its performance declines, it is difficult to detect and easily overlooked. Therefore, there are risks of equipment and personal safety hazards and property losses. [0003] The power module of an off-board charger is usually composed of multiple unit power modules connected in parallel. The greater the output power, the more unit power modules are required and the greater the heat generation. Multiple unit power modules are close together in a small cabinet space, so heat dissipation is a very difficult problem. In the prior art, although the functio...

AI Technical Summary

Problems solved by technology

Under the premise of ensuring the normal heat dissipation of the cabinet, avoid unnecessary high-speed operation of the cooling fan, reduce the energy consumption of the cooling fan, reduce system noise, reduce the speed of rotation, and reduce the maintenance frequency of the cabinet dust filter, but it does not completely solve the cooling system. Active cooling problems, as well as self-diagnosis and handling of the cooling system

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