Non-contact intelligent low-voltage power distribution box

Abstract

The invention provides a non-contact intelligent low-voltage power distribution box, which includes: logic switches, a total of 56 circuits, using MOS tubes, and independently controlling the on-off of the circuits; a power tube temperature sampling unit; a load current sampling unit; a plurality of 16 The 1-select switch chip is a CD4067 chip, which has 16 signal input terminals, 1 signal output terminal and 1 control terminal, and can select one of the input signals of the 16 signal input terminals to be sent out by the signal output terminal according to the instructions of the control terminal; Multiple 8-way latches, 74LS374 chips, with 8 signal output terminals, 1 signal input terminal and 1 control terminal, can send 8 different input signals to the 8 signal output terminals, and maintain the level of the signal output terminals; DSP controller is used to comprehensively control the entire circuit.

Description

Technical field [0001] The invention relates to the field of low-voltage power distribution boxes for passenger cars, in particular to a contactless intelligent low-voltage power distribution box. Background technique [0002] The bus low-voltage power distribution box is mainly composed of electromagnetic power switch, starting high-power relay, various low-power relays, various fuse pieces, connectors, copper bars, shells and other components combined according to certain circuit connection principles. The main functions are It is used for power distribution and starting control functions of passenger cars. [0003] The current problems of the rear power distribution box used in the passenger car industry are: the traditional low-voltage power distribution box has a single function and simple structure, the electrical box ages quickly, large currents cannot be effectively protected, and there are safety hazards; the function integration is not high, and there is no The electric ...

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Problems solved by technology

[0004] For this reason, the main purpose of the present invention is to provide a non-contact intelligent low-voltage power distribution box to achieve the following goals: 1. Solve the problems of limited use times and high failure rate of relays in traditional power distribution boxes; The problem of many and chaotic lines in the power distribution box; 3. Solve the problem that the traditional power distribution box has a single functional structure and cannot upload the current and temperature status of each load through CAN communication; 4. Solve the problem that the traditional power distribution box cannot pass through the whole vehicle Communication controls the logical state of each channel; 5. Solve the problems of poor anti-vibration performance of traditional power distribution boxes, waterproof level not up to IP67, insufficient fire protection level, etc.; 6. Solve the problem of large volume and inconvenient installation of traditional power distribution boxes question

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