Traditional central electrical distribution box performance-oriented detection system and method

Abstract

The invention discloses a traditional central electrical distribution box performance-oriented detection system and method. The system comprises a PC, a detection circuit board and a detected electrical appliance box. The PC built-in test system sends a command to the detection circuit board; the detection circuit board executes a corresponding action and feeds back a detection result to the PC; the detection circuit board comprises a central processor, a high-level output circuit, a low-level output circuit, a load input loop and a communication loop; the high-level output circuit, the low-level output circuit, the load input loop and the communication loop are connected with the central processor; and the detected electric appliance box is connected with the detection circuit board through the wire harness. According to the invention, not only can the electrical box be detected, but also the production flow of the produced electrical box can be controlled.

Description

technical field [0001] The invention relates to the field of electrical equipment detection, in particular to a detection system and method for the performance of a traditional central electrical distribution box. Background technique [0002] The traditional central electrical distribution box mainly refers to products including PCB printed circuit boards, relays, fuses, current limiting resistors, diodes and other components, as well as structural parts such as shells, including connectors, fuse connectors, relay connectors and resistor diodes It is installed on the PCB board by welding, and then inserts fuses and relays of corresponding specifications at the corresponding positions according to the electrical requirements of the vehicle, and then assists in the installation of some structural parts such as the shell to protect the circuit board to a certain extent. Complete assembly. When testing its performance, most of them are carried out by random inspection, and the...

AI Technical Summary

Problems solved by technology

Although this test method can complete the function test of the electrical box, its efficiency is relatively low. In addition, it cannot complete the storage and query of the loop test results.

For example, the detection method mentioned by Yan Xinming and others in the "Central Electrical Distribution Box Simulated Load Detection Method" can use resistance to simulate vehicle loads, and can carry out load distribution. Combined with factors such as operating temperature, the performance detection of electrical boxes can be completed. In addition to the defects mentioned above, this method cannot achieve 100% detection of products

Another example is the detection method mentioned by BYD Co., Ltd. in the CN 101308192A patent. Although the design defects of Yan Xinming and others are relatively comprehensively solved, there are the following problems: the invention can only detect the on-off of the circuit, but there is no way to detect it. Hidden dangers in the circuit, such as insufficient copper foil thickness, virtual soldering, etc.

However, the measurement object of this application is the wiring harness, not the central electrical distribution box, and the detection circuit in this application has no control loop

Therefore, the detection of the central electrical distribution box cannot be carried out directly

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