CN113659694A - A power supply system and method suitable for mobile magnetic resonance system - Google Patents
A power supply system and method suitable for mobile magnetic resonance system Download PDFInfo
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- CN113659694A CN113659694A CN202110918734.8A CN202110918734A CN113659694A CN 113659694 A CN113659694 A CN 113659694A CN 202110918734 A CN202110918734 A CN 202110918734A CN 113659694 A CN113659694 A CN 113659694A
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
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- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
本发明公开了一种适用于移动磁共振系统的供电系统及方法，属于供电系统技术领域。本发明系统，包括：系统电源线，所述系统电源线接入单相电；隔离变压器单元，所述隔离变压器单元接入单线电，用于对单相电与直流电源的电气隔离，并向直流电源及移动磁共振系统输入单相电；直流电源，所述直流电源接入单相电后，为移动磁共振系统的梯度子系统供电，连接超级电容并对超级电容充电，且所述直流电源的输出电流小于或等于给定值；超级电容，所述超级电容在所述梯度子系统用电功率增加，且直流电源的输出电流达到电流限定在给定值时，所述超级电容放电为梯度子系统提供电流。本发明提供的系统功耗低，能够使用单相插座供电，可以不使用专用电源配电。
The invention discloses a power supply system and method suitable for a mobile magnetic resonance system, belonging to the technical field of power supply systems. The system of the present invention includes: a system power line, which is connected to a single-phase power supply; an isolation transformer unit, which is connected to the single-line power supply for electrical isolation of the single-phase power and the DC power supply, and is connected to the single-phase power supply. The DC power supply and the mobile magnetic resonance system input single-phase electricity; the DC power supply, after the DC power supply is connected to the single-phase electricity, supplies power to the gradient subsystem of the mobile magnetic resonance system, connects the super capacitor and charges the super capacitor, and the DC power supply The output current of the power supply is less than or equal to a given value; the super capacitor, when the electrical power of the gradient subsystem increases, and the output current of the DC power supply reaches the current limit to a given value, the super capacitor discharges as a gradient Subsystem provides current. The system provided by the invention has low power consumption, can use a single-phase socket for power supply, and can distribute power without using a special power supply.
Description
Technical Field
The present invention relates to the field of power supply systems, and more particularly, to a power supply system and method suitable for a mobile magnetic resonance system.
Background
Most of medical magnetic resonance imaging diagnostic systems on the market are permanently and fixedly installed, occupy huge floor area and floor volume and cannot be applied in a mobile way; the power supply mode is also mostly three-phase power supply, the power consumption is huge, the power supply can not work after being separated from the power grid, even though the UPS power supply is matched, the power supply can only be maintained for a very short working time, or the power supply can only be maintained by a high-power generator, the noise of the generator can seriously influence the surrounding environment, and when the magnetic resonance system works, the electromagnetic radiation of a power supply cable can also generate small interference on the power grid and the surrounding environment.
Disclosure of Invention
In view of the above problem, the present invention provides a power supply system suitable for a mobile magnetic resonance system, comprising:
the system power line is connected with the single-phase power and connected with the isolation transformer unit;
the isolation transformer unit is connected with the single-phase wire, is used for electrically isolating the single-phase wire from the direct-current power supply, is connected with the direct-current power supply and the mobile magnetic resonance system, and inputs the single-phase wire to the direct-current power supply and the mobile magnetic resonance system;
the direct current power supply is connected with a gradient subsystem and a super capacitor of the mobile magnetic resonance system, the direct current power supply supplies power to the gradient subsystem after being connected with single-phase electricity, the super capacitor is connected and charges the super capacitor, and the output current of the direct current power supply is smaller than or equal to a given value;
the super capacitor is connected with the gradient subsystem, the electric power consumption of the super capacitor is increased in the gradient subsystem, and when the output current of the direct current power supply reaches a current limit given value, the super capacitor discharges to provide current for the gradient subsystem.
Optionally, the system further comprises: a power distribution unit, the power distribution unit comprising: the gradient power supply module and the AC/DC power supply module;
the gradient power supply module is connected with the direct-current power supply and the super capacitor, is connected with the current output by the direct-current power supply and the super capacitor, and distributes and transmits the current to the gradient subsystem;
the AC/DC power supply module is connected with the isolation transformer unit and is connected with single-phase power input by the isolation transformer unit, the AC/DC power supply module comprises a multi-path AC/DC switching power supply, and the multi-path AC/DC switching power supply supplies power to a plurality of subsystems in the mobile magnetic resonance system.
Optionally, the super capacitor is charged when the output current of the dc power supply is smaller than a given value.
Alternatively to this, the first and second parts may,
the system further comprises: a charger and a battery; the input end of the charger is connected with a 220VAC single-phase electric wiring terminal of the power distribution unit, and the output end of the charger is connected with the battery and the temperature controller of the mobile magnetic resonance system to charge the battery and provide electric energy for the temperature controller;
the output end of the battery is connected with the motion control subsystem of the mobile magnetic resonance system to provide electric energy for the motion control subsystem.
Optionally, the electric energy output by the super capacitor and the direct-current power supply at the same time is larger than the electric energy required by the operation of the gradient subsystem.
The invention also provides a power supply method suitable for the mobile magnetic resonance system, which comprises the following steps:
connecting single-phase electricity to a system power line, and electrically isolating the single-phase electricity by using an isolation transformer unit;
inputting single-phase electricity after electrical isolation to the direct-current power supply and the mobile magnetic resonance system;
supplying power to a gradient subsystem of the mobile magnetic resonance system through a direct current power supply, and charging a super capacitor;
when the electric power used by the gradient subsystem is increased and the output current of the direct current power supply reaches a current limit given value, the super capacitor discharges to provide current for the gradient subsystem.
Optionally, the output current of the dc power supply is less than or equal to a given value.
The system provided by the invention has low power consumption, can use a single-phase socket to supply power, and can distribute power without using a special power supply.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a block diagram of a mobile magnetic resonance system in which the system of the present invention is used;
FIG. 3 is a flow chart of the method of the present invention;
in the figure, 1 is an isolation transformer unit, 2 is a direct current power supply, 3 is a super capacitor, 4 is a power supply distribution unit, 5 is a temperature controller, 6 is a shimming unit, 7 is a scanning workstation, 8 is a spectrometer, 9 is a radio frequency driving unit, 10 is a gradient amplifier, 11 is a radio frequency amplifier, 12 is a receiving gain unit, 13 is a magnet, 14 is a gradient shimming coil, 15 is a radio frequency coil, 16 is a temperature transmitter, 17 is a supporting wheel, 18 is a motor, 19 is a motor driver, 20 is a motion control unit, 21 is a battery, 22 is a charger, and 23 is a water cooler.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The system of the present invention, as shown in fig. 1, comprises: the system comprises an isolation transformer unit 1, a direct current power supply 2, a super capacitor 3 and a system power line 24; further comprising: power distribution unit 4, battery 21, and charger 22;
the isolation transformer unit 1 consists of 1 single-phase isolation transformer, 1 surge protector, 1 circuit breaker, 1 filter, 1 shunt release, 1 contactor and 1 thermal overload relay. The power supply of the network power supply and the power supply of the mobile magnetic resonance system can be electrically isolated, and the power supply has enough insulation voltage-resistant grade. And has the functions of surge impact resistance, overheating resistance, overcurrent protection, overload protection and the like, so that the magnetic resonance system is safe enough.
The direct current power supply 2 is used for charging and storing energy for the super capacitor, meanwhile, the current limiting function is achieved, when the power consumption of the gradient subsystem is suddenly increased, the output current of the direct current power supply 2 is limited to a given value, the total input current of the whole system is prevented from exceeding 10A, at the moment, the output power of the direct current power supply 2 is not enough to maintain the power required by the gradient subsystem, the super capacitor 3 starts to discharge, the voltage on the super capacitor 3 starts to drop, and the energy stored by the super capacitor 3 is used for compensating the energy required by the gradient subsystem; when the power consumption of the gradient subsystem is reduced to a smaller power, the power consumption is smaller than the output power of the direct current power supply 2, and at the moment, the direct current power supply 2 charges the super capacitor 3;
the direct current power supply 2 has a current limiting function and a power limiting function, and when the current exceeds a limit value, the direct current power supply 2 limits the output to a fixed value.
The battery 21 is a lithium battery module, and the module comprises a plurality of lithium battery electric cores through the series-parallel connection, has integrateed the battery management system inside the module, can realize the monitoring of battery electric core, when the unusual circumstances such as charge-discharge, temperature appear, can cut off the output with the battery module.
The charger 22 is used for charging the battery 21, the temperature controller and the motion control system are connected with the battery 21 in parallel at the same time, namely, the online power supply is adopted, when the total power supply of the magnetic resonance system is connected with the power supply, the charger 22 can supply power to the temperature controller 5 and the motion control system while charging the battery 21; when the total power supply of the magnetic resonance system is disconnected with the network power supply, the battery 21 supplies power to the temperature controller 5 and the motion control system, namely, the motion control system can be supplied with power by the battery to realize the motion in the process that the magnetic resonance system moves from one place to another place, and in the moving process, the battery supplies energy to keep the temperature of the magnet of the magnetic resonance system.
The system can realize normal work when the mobile magnetic resonance system is plugged into a common socket of 220VAC/10A, gets rid of the constraint that the common magnetic resonance system adopts three-phase power, and can be conveniently used for plugging and starting up at any department.
The power distribution unit 4 comprises a plurality of AC/DC switching power supplies, realizes some logic switching functions, and distributes each power supply to each subsystem (including a gradient system, a radio frequency system, a motion control system, a temperature control system, etc.)
As shown in fig. 2, a system power line 24 is plugged into a single-phase 220VAC/10A socket to supply power to the magnetic resonance system, the other end of the system power line is connected to an input end of an isolation transformer unit 1, an output end of the isolation transformer unit 1 is connected to an input end of a direct current power supply 2, an output end of the direct current power supply 2 is connected to a super capacitor 3, and the super capacitor 3 is connected to a gradient power supply module of a power distribution unit 4 to supply direct current power thereto.
Meanwhile, the output terminal of the isolation transformer unit 1 is connected to the AC/DC power module of the power distribution unit 4 to supply AC power to the power distribution unit 4. The power distribution unit 4 is divided into power supplies for supplying power to the temperature controller 5, the shimming unit 6, the scanning workstation 7, the spectrometer 8, the radio frequency driving unit 9, the gradient amplifier 10, the radio frequency amplifier 11, the charger 22 and the water cooling machine 23; the charger can supply power to the motion control unit 20 and the temperature controller 5 while charging the battery 21;
when a gradient subsystem (comprising a gradient power supply module, a gradient amplifier 10 and a gradient shimming coil 14 in a power supply distribution unit 4) of the magnetic resonance system normally scans and works, the power is high, the power consumption is high, a general 220VAC/10A power supply system cannot meet the power requirement of the magnetic resonance gradient subsystem, and the power supply system is characterized in that a direct-current power supply 2 and a super capacitor 3 are used, and the super capacitor 3 can provide guarantee for the instantaneous high-power consumption requirement of the gradient subsystem;
when the system works, the direct current power supply 2 charges the super capacitor 3, the voltage of the super capacitor 3 is increased, and the electric energy is stored in the super capacitor 3.
The present invention also provides a power supply method suitable for a mobile magnetic resonance system, as shown in fig. 3, including:
connecting single-phase electricity to a system power line, and electrically isolating the single-phase electricity by using an isolation transformer unit;
inputting single-phase electricity after electrical isolation to the direct-current power supply and the mobile magnetic resonance system;
supplying power to a gradient subsystem of the mobile magnetic resonance system through a direct current power supply, and charging a super capacitor;
when the electric power used by the gradient subsystem is increased and the output current of the direct current power supply reaches a current limit given value, the super capacitor discharges to provide current for the gradient subsystem.
Wherein, the output current of the direct current power supply is less than or equal to a given value.
The system provided by the invention has low power consumption, can use a single-phase socket to supply power, and can distribute power without using a special power supply.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A power supply system adapted for use in a mobile magnetic resonance system, the system comprising:
the system power line is connected with the single-phase power and connected with the isolation transformer unit;
the isolation transformer unit is connected with the single-phase wire, is used for electrically isolating the single-phase wire from the direct-current power supply, is connected with the direct-current power supply and the mobile magnetic resonance system, and inputs the single-phase wire to the direct-current power supply and the mobile magnetic resonance system;
the direct current power supply is connected with a gradient subsystem and a super capacitor of the mobile magnetic resonance system, the direct current power supply supplies power to the gradient subsystem after being connected with single-phase electricity, the super capacitor is connected and charges the super capacitor, and the output current of the direct current power supply is smaller than or equal to a given value;
the super capacitor is connected with the gradient subsystem, the electric power consumption of the super capacitor is increased in the gradient subsystem, and when the output current of the direct current power supply reaches a current limit given value, the super capacitor discharges to provide current for the gradient subsystem.
2. The system of claim 1, further comprising: a power distribution unit, the power distribution unit comprising: the gradient power supply module and the AC/DC power supply module;
the gradient power supply module is connected with the direct-current power supply and the super capacitor, is connected with the current output by the direct-current power supply and the super capacitor, and distributes and transmits the current to the gradient subsystem;
the AC/DC power supply module is connected with the isolation transformer unit and is connected with single-phase power input by the isolation transformer unit, the AC/DC power supply module comprises a multi-path AC/DC switching power supply, and the multi-path AC/DC switching power supply supplies power to a plurality of subsystems in the mobile magnetic resonance system.
3. The system of claim 1, wherein the super capacitor is charged when the output current of the dc power supply is less than a given value.
4. The system of claim 1, further comprising: a charger and a battery; the input end of the charger is connected with a 220VAC single-phase electric wiring terminal of the power distribution unit, and the output end of the charger is connected with the battery and the temperature controller of the mobile magnetic resonance system to charge the battery and provide electric energy for the temperature controller;
the output end of the battery is connected with the motion control subsystem of the mobile magnetic resonance system to provide electric energy for the motion control subsystem.
5. The system of claim 1, wherein the super capacitor and the dc power source output more power than the gradient subsystem.
6. A method of power supply for a mobile magnetic resonance system, the method comprising:
connecting single-phase electricity to a system power line, and electrically isolating the single-phase electricity by using an isolation transformer unit;
inputting single-phase electricity after electrical isolation to the direct-current power supply and the mobile magnetic resonance system;
supplying power to a gradient subsystem of the mobile magnetic resonance system through a direct current power supply, and charging a super capacitor;
when the electric power used by the gradient subsystem is increased and the output current of the direct current power supply reaches a current limit given value, the super capacitor discharges to provide current for the gradient subsystem.
7. The method of claim 6, wherein the output current of the DC power supply is less than or equal to a given value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110918734.8A CN113659694A (en) | 2021-08-11 | 2021-08-11 | A power supply system and method suitable for mobile magnetic resonance system |
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| CN202110918734.8A CN113659694A (en) | 2021-08-11 | 2021-08-11 | A power supply system and method suitable for mobile magnetic resonance system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108471981A (en) * | 2015-10-09 | 2018-08-31 | 通用电气公司 | The energy storage solution of MRI system |
| CN110087538A (en) * | 2016-11-22 | 2019-08-02 | 海珀菲纳研究股份有限公司 | Portable Low-field magnetic resonance imaging method and apparatus |
| CN110174631A (en) * | 2018-02-21 | 2019-08-27 | 通用电气公司 | Magnetic resonance imaging system, high frequency power allocation unit and gradient amplifier |
| CN216016513U (en) * | 2021-08-11 | 2022-03-11 | 佛山瑞加图医疗科技有限公司 | Power supply system suitable for mobile magnetic resonance system |
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2021
- 2021-08-11 CN CN202110918734.8A patent/CN113659694A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471981A (en) * | 2015-10-09 | 2018-08-31 | 通用电气公司 | The energy storage solution of MRI system |
| CN110087538A (en) * | 2016-11-22 | 2019-08-02 | 海珀菲纳研究股份有限公司 | Portable Low-field magnetic resonance imaging method and apparatus |
| CN110174631A (en) * | 2018-02-21 | 2019-08-27 | 通用电气公司 | Magnetic resonance imaging system, high frequency power allocation unit and gradient amplifier |
| CN216016513U (en) * | 2021-08-11 | 2022-03-11 | 佛山瑞加图医疗科技有限公司 | Power supply system suitable for mobile magnetic resonance system |
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