Power supply device and medical equipment
A technology of power supply device and power supply circuit, applied in the direction of output power conversion device, electrical components, adjusting electrical variables, etc., can solve the problems affecting the working quality of the load, affecting the detection accuracy, load electromagnetic interference, etc. The effect of current stabilization and improved symmetry
Pending Publication Date: 2022-02-18
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology
[0003] However, in the prior art, the signal processed and the output power when the power supply device provides high-voltage power often cause electromagnetic interference (EMI) to the load and affect the working quality of the load.
For example, the detector is easy to collect the signal output by the power supply device during the detection process, which affects the accuracy of detection
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[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the following briefly introduces the drawings that need to be used in the description of the embodiments. Apparently, the accompanying drawings in the following description are only some examples or embodiments of this specification, and those skilled in the art can also apply this specification to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.
[0037] It should be understood that "system", "device", "unit" and / or "module" as used herein is a method for distinguishing different components, elements, parts, parts or assemblies of different levels. However, the words may be replaced by other expressions if other words can achieve the same purpose.
[0038] As indicated in the specification and claims, the terms "a", "an", "an" and / or "the" are...
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The embodiment of the invention discloses a power supply device. The power supply device comprises a power supply circuit and a processing unit, wherein the power supply circuit is connected with the electric energy input end of the processing unit and provides a first power supply for the processing unit; the positive voltage output end of the processing unit provides a positive load power supply, and the negative voltage output end of the processing unit provides a negative load power supply; wherein the switching frequency of the processing unit is out of the effective frequency range of the load. The first power supply is converted into the positive and negative high-voltage power supply through the processing unit, and the EMI of the power supply device to the load is reduced by controlling the switching frequency of the processing unit.
Description
technical field [0001] This specification relates to the field of power supply, in particular to a high-voltage power supply device and medical equipment. Background technique [0002] In the field of medical imaging, the work of some electronic equipment requires the power supply device to provide positive and negative high-voltage power supplies. Ultrasound equipment, for example, typically requires positive and negative high-voltage power supplies to generate pulses that can then be used for detection. [0003] However, in the prior art, the signal processed and the output electric energy when the power supply device provides high-voltage power often cause electromagnetic interference (electromagnetic interference, EMI) to the load and affect the working quality of the load. For example, the detector is easy to collect the signal output by the power supply device during the detection process, which affects the detection accuracy. [0004] Therefore, it is necessary to p...
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IPC IPC(8): H02M1/44H02M3/156H02M9/04H02M1/32
CPCH02M1/44H02M3/156H02M1/32Y02B70/10
Inventor 王海科王洪涛秦晓华杨延嗣
Owner SHANGHAI UNITED IMAGING HEALTHCARE