Combined interleaved direct current conversion system outputting ripple-free waves

A DC conversion and DC converter technology, applied in output power conversion devices, control/regulation systems, conversion of DC power input to DC power output, etc., can solve problems such as reducing battery life, noise interference, inrush current, etc. , to increase the current output capacity, reduce the voltage and current stress, reduce the volume of the effect

Pending Publication Date: 2021-06-11
千黎(苏州)电源科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

During the charging and discharging process of the power battery, there is usually a certain ripple in the charging and discharging current. The existence of the ripple will reduce the service life of the battery and bring other surge currents, which will lead to noise interference. Therefore, how to eliminate the ripple The impact of the wave becomes a burning question

Method used

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  • Combined interleaved direct current conversion system outputting ripple-free waves
  • Combined interleaved direct current conversion system outputting ripple-free waves
  • Combined interleaved direct current conversion system outputting ripple-free waves

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circums...

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Abstract

The invention discloses an combined interleaved direct current conversion system outputting ripple-free waves, which is used for carrying out charge and discharge test on a power battery, and comprises an H-bridge direct-current converter and a multi-unit interleaved circuit, wherein the H-bridge direct-current converter is used for carrying out direct current conversion on a direct current bus voltage output externally, the multi-unit interleaved circuit comprises one or more two-way interleaved direct-current converters, input ends of the two-way interleaved direct-current converters are electrically connected with an output end of the H-bridge direct-current converter, output ends of the two-way interleaved direct-current converters are electrically connected with the power battery, and a control end of the double-path interleaved direct current converter can receive a phase-shifted PWM pulse waveform signal. According to the combined interleaved direct current conversion system outputting ripple-free waves, the output current ripple is zero, and therefore the size of a filter inductor and the size of a filter capacitor are reduced.

Description

technical field [0001] The invention relates to the technical field of power battery charge and discharge testing, in particular to a combined interleaved DC conversion system with no output ripple. Background technique [0002] The rapid development of automobiles has brought many problems such as energy shortage and environmental pollution. In order to improve the main problem of environmental pollution, electric vehicles powered by power batteries have achieved rapid development in recent years. Due to its high energy density, stable discharge voltage, light weight, high cycle times, and no memory effect, lithium power batteries have become the preferred power battery for electric vehicles, and are constantly replacing traditional lead-acid, nickel-based, sodium-sulfur and other batteries Types of. In addition to electric vehicles, lithium-powered batteries will also be widely used in satellites, aerospace and energy storage, and have a huge market space. [0003] An im...

Claims

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Application Information

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IPC IPC(8): H02M3/155H02M1/15G01R31/385
CPCH02M3/155H02M1/15G01R31/385
Inventor 韩金刚顾欣储秀红
Owner 千黎(苏州)电源科技有限公司
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