Multi-channel intelligent control circuit for high-voltage distribution box and control method of multi-channel intelligent control circuit
A technology of intelligent control and high-voltage power distribution, which is applied in the direction of control/regulation system, electrical components, and adjustment of electrical variables, etc., can solve problems such as poor control reliability, achieve extended service life, simplify control circuits, optimize size, space and weight Effect
Active Publication Date: 2021-09-07
BEIJING INST OF SPACE LAUNCH TECH
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Problems solved by technology
[0005]
In view of the above problems, the embodiment of the present invention provides a multi-channel intelligent control circuit for high-voltage distribution boxes and its control method, which solves the technical problem of poor control reliability due to substantial defects in the electrical structure of existing high-voltage distribution boxes
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[0019] In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] In one embodiment of the present invention, a multi-channel intelligent control circuit for a high-voltage distribution box is as follows: figure 1 shown. exist figure 1 , this example includes:
[0021] The high-voltage circuit is used to connect high-voltage power signals on the input side, and form a controlled pre-charging circuit connected to the load end of the contactor in the power distribution branch...
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The invention provides a multi-channel intelligent control circuit for a high-voltage distribution box and a control method of the multi-channel intelligent control circuit, and solves the technical problem of poor control reliability caused by substantial defects of an electrical structure of an existing high-voltage distribution box. The control circuit comprises a high-voltage loop and a circuit control module, wherein the high-voltage loop is used for accessing a high-voltage power signal at an input side and forming a controlled pre-charging loop connected with a contactor load end in a power distribution branch circuit at an output side as required, and a power conversion circuit is formed between the input side and the output side and used for outputting a controlled pre-charging power signal to the gated controlled pre-charging loop; and the circuit control module is used for being controlled to form a gating signal to enable the controlled pre-charging loop and form a pulse width modulation wave to adjust the power conversion circuit to output a pre-charging power signal. The mode of forming the pre-charging power signal by means of PWM control has the technical advantage that the pre-charging speed and the voltage precision are flexible and adjustable, accurate switching of power distribution branches is realized, and the service life of a main contactor is prolonged. Complete voltage detection is realized by adopting fewest sensors through high integration.
Description
technical field [0001] The invention relates to the technical field of power supply control, in particular to a multi-channel intelligent control circuit for a high-voltage distribution box and a control method thereof. Background technique [0002] In the existing technology, electric-drive special vehicles are powered by a power unit composed of a 600VDC power battery and a diesel-generator, driven by a wheel-side drive motor, and have the characteristics of "high reliability, high safety, fast mobility, easy use, and independent controllability" Features. As the distribution equipment of high-voltage energy of the vehicle, the high-voltage distribution box provides power supply and distribution for each high-voltage electrical equipment of the vehicle, and realizes the status monitoring, remote control and information communication of the high-voltage power distribution circuit. [0003] The electrical structure of the high-voltage distribution box in the prior art is as...
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IPC IPC(8): H02M3/156H02M7/483
CPCH02M3/156H02M7/483
Inventor 夏欢赵志刚骆志伟何刚王辉赵宏志高枫许宝立陈世业刘宇航
Owner BEIJING INST OF SPACE LAUNCH TECH