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A power conversion device and control method for a positive and negative bidirectional switching power supply

A technology of power conversion device and bidirectional switch, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, adjustment of electric variables, etc., and can solve the problems of large volume and high cost

Active Publication Date: 2021-09-10
江苏南自通华智慧能源股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some special applications, it is required to transfer energy in two directions, and the output voltage can be changed positive and negative. For example, in the field of two-way powering of lead-acid batteries, using the existing conventional switching power supply requires additional equipment to realize the above functions, which is costly and bulky.

Method used

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  • A power conversion device and control method for a positive and negative bidirectional switching power supply
  • A power conversion device and control method for a positive and negative bidirectional switching power supply
  • A power conversion device and control method for a positive and negative bidirectional switching power supply

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Embodiment Construction

[0029] Such as figure 1 As shown, it includes a power conversion unit 1, a control unit 2, a rechargeable and dischargeable energy storage unit 1 3, and a rechargeable and dischargeable energy storage unit 2 4; wherein the rechargeable and dischargeable energy storage unit 1 3 is connected to one end of the power conversion unit 1, and can be The charging and discharging energy storage unit 2 4 is connected to the other end of the power conversion unit 1 , and the control unit 2 is respectively connected to the power conversion unit 1 , the rechargeable and discharging energy storage unit 1 3 and the rechargeable and discharging energy storage unit 2 4 .

[0030] The main control chip of the control unit 2 adopts the TMS320F28335 model product of TI Company. The control unit 2 also has a sampling conditioning circuit composed of an operational amplifier LM258, resistors, and capacitors. By sampling the battery terminal voltage and the current flowing through L1, the battery vol...

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Abstract

The invention discloses a power conversion device for a positive and negative bidirectional switching power supply, comprising a power conversion unit, a control unit, a chargeable and dischargeable energy storage unit 1, and a chargeable and dischargeable energy storage unit 2; the power conversion units are respectively connected to the chargeable and dischargeable energy storage unit Unit 1, rechargeable and dischargeable energy storage unit 2, and the control unit are respectively connected to the control power conversion unit, rechargeable and dischargeable energy storage unit 1, and rechargeable and dischargeable energy storage unit 2. The device and method can realize the power conversion function of the isolated positive and negative output bidirectional transmission switching power supply in an integrated manner, and do not need to connect multiple devices to each other to realize these functions; furthermore, the volume of the device is greatly reduced, and the cost is effectively reduced. The present invention It can also provide higher power conversion efficiency and achieve the effect of energy saving.

Description

technical field [0001] The invention relates to the field of switching power supplies, in particular to a power conversion device and a control method for an isolated positive and negative output bidirectional transmission switching power supply. Background technique [0002] Conventional switching power supplies can realize unidirectional conversion and transmission of power, and the output voltage is also positive or negative. In some special applications, two-way energy transmission is required, and the positive and negative output voltage can be variable. For example, in the field of bidirectional powering of lead-acid batteries, using existing conventional switching power supplies requires additional equipment to realize the above functions, which is costly and bulky. Contents of the invention [0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a power conversion device and a control method for an isolated posit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353H02M1/0048Y02B70/10
Inventor 徐魁赵伟星马超毛亚胜
Owner 江苏南自通华智慧能源股份有限公司
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