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Duty ratio self-adaption method, device and equipment based on Butterworth filter

A technology of duty cycle and filter, which is applied in the direction of output power conversion devices and electrical components, can solve the problems of insufficient stability of the output process and poor constant current output effect, and achieve stable constant current output, strong adaptability, Realize the effect of constant current output

Active Publication Date: 2022-08-09
杭州华塑科技股份有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problem that the power supply system in the prior art is directly controlled by the analog circuit, which leads to poor constant current output effect and insufficient stability of the output process.

Method used

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  • Duty ratio self-adaption method, device and equipment based on Butterworth filter
  • Duty ratio self-adaption method, device and equipment based on Butterworth filter
  • Duty ratio self-adaption method, device and equipment based on Butterworth filter

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Embodiment 1

[0047] like figure 1 As shown, the embodiments of this specification provide a duty cycle adaptive method based on a Butterworth filter, and the method includes:

[0048] S100: Acquire a real-time current set of the power supply system in a constant current output state according to a preset frequency;

[0049] In this embodiment, a Butterworth filter-based duty cycle adaptive device is established for the power supply system. The duty cycle adaptive device includes an acquisition module. The real-time current is output for collection, and the preset frequency is a constant set by those skilled in the art.

[0050]Specifically, the preset frequency is the number of collections in the preset collection time period, the collection of currents output by the power supply system collected in the preset collection time period is the real-time current collection, and the number of real-time currents collected in the real-time current collection is The number is the preset frequency...

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Abstract

The invention relates to a duty ratio self-adaption method, device and equipment based on a Butterworth filter. The method comprises the following steps: acquiring a real-time current set of a power supply system in a constant current output state according to a preset frequency; obtaining a first error value set according to the real-time current set based on a preset current; obtaining a second error value set according to the first error value set based on a second-order Butterworth filter; obtaining an increment value according to the second error value based on a PID increment formula; obtaining a target duty ratio according to the preset frequency and the increment value; and outputting the target duty ratio to a switch of a circuit in the power supply system so as to realize constant current output of the power supply system. The duty ratio is adjusted based on the Butterworth filter, so that the constant current output of the power supply system is stable and high in adaptability; the problems that in the prior art, a power system is directly controlled through an analog circuit, the constant current output effect is poor, and the output process is not stable enough are solved.

Description

technical field [0001] The present invention relates to the technical field of battery control, in particular to a duty cycle adaptive method, device and device based on a Butterworth filter. Background technique [0002] With the rapid development of charging technology, the requirements for the power supply system to supply power to the device are getting higher and higher. Different charging protocols have different requirements for the power supply. For some charging requirements, the power supply system needs to achieve constant current output. [0003] At present, the constant current output current of the power supply system is mainly controlled directly by an analog circuit, but this method has problems such as poor implementation effect and insufficient stability. [0004] Therefore, it is necessary to provide a duty cycle adaptive method that realizes stable constant current output and has a simple adaptive adjustment process to solve the above technical problems....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14H02M1/08
CPCH02M1/14H02M1/08Y02E60/10
Inventor 杨冬强李明星何建林
Owner 杭州华塑科技股份有限公司
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