CN109758171A - Power supply unit, ray image documentation equipment and power control method - Google Patents
Power supply unit, ray image documentation equipment and power control method Download PDFInfo
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Abstract
The present invention relates to the field of medical instrument technology, and in particular to a kind of power supply unit, ray image documentation equipment and power control method.Wherein power supply unit includes DC power supplier, and output end is connected with one end of the first switch device of one-way conduction；AC power supply module, output end are connected with one end of the second switch device of one-way conduction.Pass through setting one-way conduction and the identical first switch device of conducting direction and second switch device, when direct current and AC power supply module work at the same time, due to the one-way conduction of first switch device and second switch device, guarantee that energy feedback will not be generated between DC power supplier and AC power supply module；When powering simultaneously by the identical direct current of output voltage and AC power supply module, the output current value of power supply unit is improved；Output electric current when direct current or AC power supply module are individually powered, when output electric current is less than while powering；The power supply unit can export different current values, improve its utilization rate.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to power supply unit, ray image documentation equipment and power supply controlling party
Method.
Background technique
Currently, cooperate dual power supply unit in the electronic device to meet the different application of electronic equipment, i.e., it is electric
Sub- equipment can not only use direct current supply, but also can use Alternating Current Power Supply.For dual power supply unit, it is commonly equipped with
Power transfer device, to realize the switching between direct current supply and Alternating Current Power Supply.
Further, power module or other modules are connected with after power transfer device, for exporting to direct current supply
Voltage or Alternating Current Power Supply output voltage boosted and rectified, to meet the needs of electronic equipment is to power.When electronics is set
When the standby demand to power is larger, just there is certain requirement to the type selecting of module.Therefore, in electronic device design, module
Type selecting is usually to carry out according to the greatest requirements of power.However, when electronic equipment upgrading, i.e. need of the electronic equipment to power
It asks and improves, then corresponding module is just replaced, cause the utilization rate of electronic equipment lower.
Such as X-ray source device, which are mainly applied to hospitals, the digitlization direct imaging optics (Digital of clinic
Radiography, referred to as DR), or industrially it is mainly used in the equipment such as screening machine.Demand one kind is portable currently on the market
Moveable medical treatment, safety check etc. are related to the equipment of X-ray, can satisfy outside indoor basic function, to be also compatible with field battalion
It rescues and treats, outdoor dangerous material detection.Since above-mentioned equipment is all confined to the place installation of network source distribution, X is penetrated
Source facility is usually AC power source and battery powered two kinds of working methods.Due to X-ray source device exposure when need it is defeated
It is high-power out, then particularly important to the type selecting of power module and pressure-oil tank.When x-ray source device upgrade, i.e. X-ray
Demand of the source device to power improves, then corresponding power module and pressure-oil tank are just replaced, X is caused to penetrate
The utilization rate of source facility is lower.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of power supply unit, ray image documentation equipment and power control method, with
Solve the problems, such as that the utilization rate of equipment is low.
According in a first aspect, the embodiment of the invention provides a kind of power supply units, comprising:
DC power supplier, output end are connected with one end of the first switch device of one-way conduction；
AC power supply module, output end are connected with one end of the second switch device of one-way conduction；The first switch
The other end of device is connect with the other end of second switch device, using the output end as said supply unit；
Wherein, the output voltage of the AC power supply module is identical as the output voltage of the DC power supplier, and institute
It is identical as the conducting direction of the second switch device to state first switch device.
Power supply unit provided in an embodiment of the present invention passes through setting one-way conduction and the identical first switch device of conducting direction
Part and second switch device, when DC power supplier and AC power supply module work at the same time, due to first switch device with
The one-way conduction of second switch device will not generate energy feedback between guarantee DC power supplier and AC power supply module,
It does not interfere between each other；When being powered simultaneously by the identical DC power supplier of output voltage and AC power supply module, protecting
In the case that testimony electric unit output voltage is constant, the output current value of power supply unit is improved；In DC power supplier or friendship
Output voltage phase when galvanic electricity source module is individually powered, when the output voltage of power supply unit is powered simultaneously with two power modules
Together, output electric current when and output electric current is less than while powering at this time；The power supply unit can export different current values, improve
Its utilization rate, and then improve the utilization rate of the ray image documentation equipment including the power supply unit.
With reference to first aspect, in first aspect first embodiment, further includes:
Storage capacitor is used for storing electricity；Wherein, the storage capacitor is set to the output end of said supply unit.
Power supply unit provided in an embodiment of the present invention, when ac high voltage source works under the conditions of high-power, storage capacitor
The stabilization of power supply unit output voltage can be maintained by the electricity of storage, to realize the ray image including the power supply unit
Equipment can work normally under AC power supply module power voltage supply rugged environment；In addition, it is contemplated that DC power supplier band
The otherness of loading capability maintains exposure when institute by storage capacitor to meet the instantaneous high-power exposure of ray image documentation equipment
Need energy to be offered.
With reference to first aspect or first aspect first embodiment, in first aspect second embodiment, the exchange
Power module includes:
Active power factor correcting module, input terminal access AC power source, and output end connects the second switch device
One end.
Passive power factor corrective module is arranged in power supply unit provided in an embodiment of the present invention in AC power supply module,
It when the fluctuation of wide scope occurs in AC power source, is adjusted by the closed loop of power factor correction module, ensure that power supply unit exports
Voltage it is invariable.
With reference to first aspect, in first aspect second embodiment, the DC power supplier includes:
DC power supply；
DC/DC module is connect with the output end of the DC power supply；The output end connection described the of the DC/DC module
One end of one switch.
Power supply unit provided in an embodiment of the present invention utilizes DC/DC mould when DC supply input passes through DC/DC module
The conversion of block and boost function, by the output voltage stabilization of power supply unit in setting value.
With reference to first aspect, it in the 4th embodiment of first aspect, the first switch device and described second opens
Pass device is one of diode, thyristor, IGBT and MOSFET.
According to second aspect, the embodiment of the invention also provides a kind of ray image documentation equipment, including first aspect present invention,
Or power supply unit described in any one of first aspect embodiment.
Ray image documentation equipment provided in an embodiment of the present invention, by setting one-way conduction and conducting direction identical first is opened
Device and second switch device are closed, when DC power supplier and AC power supply module work at the same time, due to first switch device
It is anti-will not to generate energy between guarantee DC power supplier and AC power supply module for the one-way conduction of part and second switch device
Feedback is not interfered between each other；When being powered simultaneously by the identical DC power supplier of output voltage and AC power supply module,
In the case where guaranteeing that power supply unit output voltage is constant, the output current value of power supply unit is improved；In DC power supplier
Or AC power supply module is when individually powering, the output voltage when output voltage of power supply unit and two power modules are powered simultaneously
It is identical, and output electric current when electric current is less than while powering is exported at this time；The power supply unit can export different current values, mention
The high utilization rate of ray image documentation equipment.
In conjunction with second aspect, in second aspect first embodiment, further includes:
Power module is connect with the output end of said supply unit；Wherein, the DC/DC mould in the DC power supplier
Block has IC chip, and the power module has detection module, and the detection module is connected to institute by feedback conductor
State the enable end of IC chip；The detection module is for cutting off the DC/DC module.
Ray image documentation equipment provided in an embodiment of the present invention, passes through feedback conductor connecting detection module and IC chip
Enable end DC power supplier can be directly cut off by enable signal when DC power supplier does not need work, improve
The switching efficiency of ray image documentation equipment.
In conjunction with second aspect first embodiment, in second aspect second embodiment, further includes:
Fuel tank is connect with the output end of the power module；The fuel tank is used for the telecommunications exported to the power module
It number is boosted and is rectified；
Bulb is connect with the fuel tank；The output voltage of the fuel tank loads at the bulb both ends, to export ray.
According to the third aspect, the embodiment of the invention also provides a kind of power control methods of ray image documentation equipment, comprising:
When DC power supplier needs to cut off, Xiang Suoshu DC power supplier sends enable signal, described straight to cut off
Galvanic electricity source module；
Whether the input voltage of detection AC power supply module is less than preset value；
When the input voltage is less than preset value, the DC power supplier power supply is switched to.
The present embodiment additionally provides a kind of power control method of ray image documentation equipment, does not need work in DC power supplier
When making, DC power supplier can directly be cut off by enable signal, improve the switching efficiency of ray image documentation equipment；In addition,
When the output voltage of AC power supply module is less than preset value, DC power supplier power supply is automatically switched to, to guarantee that power supply is single
The stabilization of first output voltage, to guarantee that ray image documentation equipment can work normally under voltage rugged environment.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of power supply unit according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of power supply unit according to an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of ray image documentation equipment according to an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of ray image documentation equipment according to an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of ray image documentation equipment according to an embodiment of the present invention；
Fig. 6 is the flow chart of the power control method of ray image documentation equipment according to an embodiment of the present invention；
Appended drawing reference:
10- DC power supplier；11- DC power supply；12-DC/DC module；121- IC chip；20- AC power source
Module；21- passive power factor corrective module；30- power module；31- detection module；40- fuel tank；50- bulb；D1- first
Switching device；D2- second switch device；C- storage capacitor.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Present inventor has found that the reason for causing the utilization rate of equipment low is the defeated of power supply unit by many experiments
Electric current is smaller out, and and does not lie in power module or the type selecting of other modules.Therefore, it proposes in embodiments of the present invention using straight
Galvanic electricity source module 10 is outwardly powered simultaneously with AC power supply module 20, and prevents energy backspace from presenting using the cooperation of switching device
Damage to power module.It is outwardly defeated when outwardly being powered simultaneously due to DC power supplier 10 and AC power supply module 20
Electric current out is the sum of the output electric current of DC power supplier 10 and AC power supply module 20, that is, the electricity of extraneous output can be improved
Stream, so as to meet the upgrading of equipment, to improve the utilization rate of equipment.
The embodiment of the invention provides a kind of power supply units, as shown in Figure 1, the power supply unit includes DC power supplier
10, AC power supply module 20 and the output end corresponding to above-mentioned two power module be connected separately with first switch device D1 with
Second switch device D2.
The power supply that DC power supplier 10 is accessed is DC power supply, and the power supply that AC power supply module 20 is accessed is exchange
Power supply.DC power supplier 10 is identical as the output voltage of AC power supply module 20, i.e. the size of output voltage is identical.For example,
The output voltage of DC power supplier 10 and AC power supply module 20 is the direct current of 400V, can be in AC power supply module 20
It is provided with rectification unit, to realize the conversion of voltage；In addition, being arranged in DC power supplier 10 and AC power supply module 20
There is voltage feedback loop, to guarantee the stabilization of output voltage.
Wherein, DC power supply included by DC power supplier 10 can be lithium battery, lead-acid battery or Vehicular direct-current source
Power supply etc..And the alternating current that AC power supply module 20 is accessed can be alternating current, be also possible to other AC power sources.
As shown in Figure 1, the output end in DC power supplier 10 is connected with first switch device D1, first switch device D1
With single-phase on state characteristic, i.e., can only be connected in one direction.First switch device D1 is retouched by taking diode as an example in Fig. 1
It states, but first switch device D1 is not limited to this, all switching devices with single-phase on state characteristic belong to the present invention
Protection scope.For example, first switch device D1 and second switch device D2 be diode, thyristor, IGBT and
One of MOSFET, and first switch device D1 and second switch device D2 may be the same or different.
Accordingly, it is connected with second switch device D2 in the output end of AC power supply module 20, second switch device D2 is same
Sample also has single-phase on state characteristic and conducting direction is identical as the conducting direction of first switch device D1.That is, first switch device
D1 is to guarantee that electric signal can only be from corresponding power module (DC power supplier 10 and friendship with the effect of second switch device D2
Galvanic electricity source module 20) output, and cannot be from the extraneous input terminal for flowing into power module.For example, as first switch device D1 and the
When two switching device D2 are all diode, the output end of the anode access power module of diode, the cathode of two diodes connects
It connects using the output end as entire power supply unit.
For the power supply unit when outwardly powering, DC power supplier 10 and AC power supply module 20 can simultaneously outwardly
Power supply.Most important problem when outwardly powering at the same time is the energy feedback between power module, therefore, in this reality
It applies in example through first switch device D1 with single-phase on state characteristic and second switch device D2 for preventing energy backspace
Present the generation of phenomenon.
Since DC power supplier 10 is identical with the output voltage of AC power supply module 20, then entire power supply unit is outside
Voltage provided by boundary is identical as the output voltage of DC power supplier 10 or AC power supply module 20.Simultaneously as first opens
The other end connection of device D1 and second switch device D2 is closed, then the electric current of power supply unit output is DC power supplier 10
The sum of the electric current that the electric current and AC power supply module 20 of output export.For example, the output voltage of DC power supplier 10 is U, it is defeated
Electric current is I1 out, and the output voltage of AC power supply module 20 is also U, and output electric current is I2, then the output voltage of power supply unit
For U, output electric current is I, I=I1+I2.
Further, when which outwardly powers, DC power supplier 10 or AC power supply module 20 be can be
It individually outwardly powers, then the output voltage of power supply unit is the output electricity of DC power supplier 10 or AC power supply module 20
Pressure, the output electric current of power supply unit are the output electric current of in running order power module.For example, working as DC power supplier 10
When working independently, the output electric current of power supply unit is the output electric current of DC power supplier 10；When AC power supply module 20 is independent
When work, the output electric current of power supply unit is the output electric current of AC power supply module 20.
Power supply unit provided in this embodiment passes through setting one-way conduction and the identical first switch device D1 of conducting direction
And second switch device D2, when DC power supplier 10 and AC power supply module 20 work at the same time, due to first switch device
The one-way conduction characteristic of part D1 and second switch device D2, guaranteeing will not between DC power supplier 10 and AC power supply module 20
Energy feedback is generated, i.e., is not interfered between each other；Pass through the identical DC power supplier 10 of output voltage and AC power supply module
20 when powering simultaneously, in the case where guaranteeing that power supply unit output voltage is constant, improves the output current value of power supply unit；?
When DC power supplier or AC power supply module are individually powered, the output voltage of power supply unit is powered simultaneously with two power modules
When output voltage it is identical, and output electric current is less than while output electric current when powering at this time；The power supply unit can export not
Same current value, improves its utilization rate, and then improve the utilization rate of the ray image documentation equipment including the power supply unit.
As a kind of optional embodiment of the present embodiment, as shown in Fig. 2, the power supply unit further includes having storage capacitor C,
For storing electricity.The output end of the storage capacitor C setting and power supply unit.Specifically, first switch device D1 and second
One end of storage capacitor C, the other end and DC power supplier 10 of storage capacitor C are accessed after the other end connection of switching device D2
And AC power supply module 20 connects, and from the both ends extraction wire of storage capacitor C using the output end as power supply unit.Its
In, which can be including a storage capacitor C, can be 2 storage capacitor C, is also possible to multiple storage capacitors
C does not do any restrictions to the quantity and type of storage capacitor C at this, only need to guarantee that it being capable of storing electricity.
Optionally, storage capacitor C can also be replaced with other energy-storage travelling wave tubes, such as energy-storage battery etc., only need to guarantee it
It being capable of storing electricity.
When high-voltage power module 20 works under the conditions of high-power, storage capacitor C can maintain to supply by the electricity of storage
The stabilization of electric unit output voltage, to realize that the ray image documentation equipment including the power supply unit is powered in AC power supply module 20
It can work normally under rugged environment；In addition, it is contemplated that the otherness of 10 load capacity of DC power supplier, is penetrated to meet
The instantaneous high-power exposure of line image documentation equipment, required energy to be offered when maintaining to expose by storage capacitor C.
Fig. 2 please be recombine, AC power supply module 20 includes passive power factor corrective module 21.The active power factor
The input terminal of correction module 20 accesses AC power source, and output end connects one end of second switch device D2.
By the way that passive power factor corrective module 21 is arranged in AC power supply module 20, it is arranged in AC power supply module
Passive power factor corrective module passes through power factor (PF) school when the fluctuation of wide scope (for example, 85V-264V) occurs in AC power source
The closed loop of positive module is adjusted, and be ensure that the output voltage of AC power supply module 20 is invariable, be thereby may be ensured that power supply unit
Output voltage it is invariable.
As shown in Fig. 2, DC power supplier 10 includes DC power supply 11 and DC/DC module 12.Wherein, DC/DC module
12 input terminal is connect with the output end of DC power supply 11, and output end is connect with one end of first switch device D1.Work as direct current
When source input is by DC/DC module 12, conversion and boost function using DC/DC module 12, the output of DC power supplier 10
Voltage is invariable, thereby may be ensured that the invariable of power supply unit output voltage, i.e., the output voltage of power supply unit is steady
It is scheduled on setting value.
It should be noted that the DC power supplier 10 in the present embodiment is not limited to DC/DC module 12, if be related to by
The scheme that DC source is converted to DC source belongs to protection scope of the present invention；In addition, DC power supply can also include movable type
DC power-supply system also may include all DC power-supply systems with battery energy storage.In addition, confession provided in an embodiment of the present invention
Electric unit can be applied to various electronics, in electrical equipment, without limitation to the concrete application domain variability of power supply unit.
The embodiment of the invention also provides a kind of ray image documentation equipments, including confession described in Fig. 1 or embodiment illustrated in fig. 2
Electric unit.
Ray image documentation equipment provided in this embodiment passes through setting one-way conduction and the identical first switch device of conducting direction
Part D1 and second switch device D2 is opened when DC power supplier 10 and AC power supply module 20 are worked at the same time due to first
The one-way conduction of device D1 and second switch device D2 are closed, is guaranteed between DC power supplier 10 and AC power supply module 20 not
Energy feedback can be generated, i.e., is not interfered between each other；Pass through the identical DC power supplier 10 of output voltage and AC power source mould
When block 20 is powered simultaneously, in the case where guaranteeing that power supply unit output voltage is constant, the output current value of power supply unit is improved；
When DC power supplier or AC power supply module are individually powered, the output voltage of power supply unit supplies simultaneously with two power modules
Output voltage when electric is identical, and exports output electric current when electric current is less than while powering at this time；The power supply unit can export
Different current values improves the utilization rate of ray image documentation equipment.
As a kind of optional embodiment of the present embodiment, as shown in figure 3, the ray image documentation equipment further includes having power mould
Block 30, mailbox 40 and bulb 50.
Specifically, power module 30 is connect with the output end of power supply unit.Wherein, the DC/DC in DC power supplier 10
Module 12 has IC chip 121, and power module 30 has detection module 31.The detection module 31 can be power supply core
Piece, can also be with electric power detection module or other detection units etc..The detection module 31 is connected to integrated by feedback conductor
The enable end of circuit chip 121, the detection module is for cutting off DC/DC module 12.Ray image documentation equipment at work, is defaulted
Be powered using AC power supply module 20, when AC power supply module 20 can normal power supply when, detection module 31 utilizes
Feedback conductor sends enable signal to IC chip 121, to cut off DC/DC module 12.That is, working as 20 work of AC power supply module
When making, DC/DC module 12 does not work, and by the reversed cut-off of first switch device D1, guarantees that DC/DC module 12 is off shape
State.By the enable end of feedback conductor connecting detection module 31 and IC chip 121, do not needed in DC power supplier 10
When work, DC power supplier 10 can directly be cut off by enable signal, improve the switching efficiency of ray image documentation equipment.
When the detection module 31 in power module 30 detects the input voltage of AC power supply module 20 lower than minimum setting
When voltage, direct current supply is automatically switched to, and 21 circuit of passive power factor corrective module does not work, busbar voltage passes through second
Switching device D2 reversely ends, and guarantees that passive power factor corrective module 21 is in an off state.
As shown in figure 3, the fuel tank 40 in the ray image documentation equipment is connect with the output end of power module 30, the fuel tank 40
Electric signal for exporting to power module 30 is boosted and is rectified.Bulb 50 is connect with fuel tank 40, the output electricity of fuel tank 40
Pressure load is at 50 both ends of bulb to export ray.
At work, passive power factor corrective module 21 is passed through in AC power source input to the ray image documentation equipment, is realized whole
Stream and boost function stablize the output voltage (that is, busbar voltage) of swin flu power module 20 in setting value；When DC power supply is defeated
Enter by DC/DC module 12, realizes DC/DC conversion and boost function, busbar voltage is stablized in setting value.Busbar voltage is passed through
Power module 30 is converted into the exchange output of high frequency by high-frequency inversion technology, and by the transformer and multiplication of voltage in fuel tank 40
Plate is boosted and is rectified, and high direct voltage is loaded at 50 both ends of bulb, realizes the output of X-ray.
Optionally, as shown in figure 4, the ray image documentation equipment further includes storage capacitor C, it is used for storing electricity.It please join in detail
The description as described in storage capacitor C in embodiment as shown in Figure 2, details are not described herein.
Still optionally further, as described in Figure 5, which further includes having control unit 60, the control unit 60
It is connect with power module 30, for the working condition to control power module 30.
The embodiment of the invention also provides a kind of power control methods of ray image documentation equipment, as shown in fig. 6, this method packet
It includes:
Whether S11, detection DC power supplier need to cut off.
Wherein, at work, default is powered the ray image documentation equipment using AC power supply module 20, passes through inspection
Survey whether AC power supply module 20 works normally (that is, whether the input voltage of AC power supply module 20 is stable in predeterminated voltage
Value), or, DC power supply power supply is determined the need for, so that it is determined that whether DC power supplier needs to cut off.When DC power supply mould
When block needs to cut off, S12 is executed；Otherwise, S13 is executed.
S12 sends enable signal to DC power supplier, to cut off DC power supplier.
When DC power supplier 10 needs to cut off, the detection module 31 in power module 30 is sent to DC power supplier
Enable signal.Specifically, the enabled pin of the IC chip 121 into DC power supplier 10 sends enable signal, with
Cut off DC power supplier.
Whether S13, the output voltage for detecting AC power supply module are less than preset value.
When DC power supplier 10 does not need cutting, it is default whether the input voltage of detection AC power supply module 20 is less than
Whether the input voltage of value, i.e. detection AC power supply module 20 is stable.When input voltage is less than preset value, S14 is executed；It is no
Then, S11 is executed.
S14 switches to DC power supplier power supply.
When the input voltage of AC power supply module 20 is less than preset value, the input electricity of AC power supply module 20 at this time is indicated
Pressure is not able to satisfy the work requirements of ray image documentation equipment, needs to switch to DC power supplier power supply.
The power control method of ray image documentation equipment provided in this embodiment does not need work in DC power supplier 10
When, DC power supplier 10 can directly be cut off by enable signal, improve the switching efficiency of ray image documentation equipment；In addition,
When the output voltage of AC power supply module 20 is less than preset value, the power supply of DC power supplier 10 is automatically switched to, to guarantee to supply
The stabilization of electric unit output voltage, to guarantee that ray image documentation equipment can work normally under voltage rugged environment.
The ray image documentation equipment can switch DC power supplier 10 and exchange in specific works according to the actual situation
The access state of power module 20, for example, when the input voltage of AC power supply module 20 is lower than preset value (that is, AC power source is defeated
The voltage minimum entered) when, automatically switch to the power supply of DC power supplier 10；Conversely, the voltage when DC power supplier 10 is low
When minimum supply voltage, it is switched to the power supply of AC power supply module 20, or directlys adopt the power supply of direct current supply module 10, with full
The outdoor operating condition of foot；Alternatively, ray image documentation equipment power demand improve when, using DC power supplier 10 with exchange
The working method that power supply module 20 is powered simultaneously.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where make various modifications and variations, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (9)
1. a kind of power supply unit characterized by comprising
DC power supplier, output end are connected with one end of the first switch device of one-way conduction；
AC power supply module, output end are connected with one end of the second switch device of one-way conduction；The first switch device
The other end connect with the other end of second switch device, using the output end as said supply unit；
Wherein, the output voltage of the AC power supply module is identical as the output voltage of the DC power supplier, and described
One switching device is identical as the conducting direction of the second switch device.
2. power supply unit according to claim 1, which is characterized in that further include:
Storage capacitor is used for storing electricity；Wherein, the storage capacitor is set to the output end of said supply unit.
3. power supply unit according to claim 1 or 2, which is characterized in that the AC power supply module includes:
Active power factor correcting module, input terminal access AC power source, and output end connects the one of the second switch device
End.
4. power supply unit according to claim 1, which is characterized in that the DC power supplier includes:
DC power supply；
DC/DC module is connect with the output end of the DC power supply；The output end connection described first of the DC/DC module is opened
One end of pass.
5. power supply unit according to claim 1, which is characterized in that the first switch device and the second switch
Device is one of diode, thyristor, IGBT and MOSFET.
6. a kind of ray image documentation equipment, which is characterized in that including power supply unit of any of claims 1-4.
7. equipment according to claim 6, which is characterized in that further include:
Power module is connect with the output end of said supply unit；Wherein, the DC/DC module tool in the DC power supplier
There is IC chip, the power module has detection module, and the detection module is connected to the collection by feedback conductor
At the enable end of circuit chip；The detection module is for cutting off the DC/DC module.
8. equipment according to claim 7, which is characterized in that further include:
Fuel tank is connect with the output end of the power module；The electric signal that the fuel tank is used to export the power module into
Row boosting and rectification；
Bulb is connect with the fuel tank；The output voltage of the fuel tank loads at the bulb both ends, to export ray.
9. a kind of power control method of ray image documentation equipment characterized by comprising
When DC power supplier needs to cut off, Xiang Suoshu DC power supplier sends enable signal, to cut off the direct current
Source module；
Whether the input voltage of detection AC power supply module is less than preset value；
When the input voltage is less than preset value, the DC power supplier power supply is switched to.
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| CN201910045790.8A CN109758171A (en) | 2019-01-17 | 2019-01-17 | Power supply unit, ray image documentation equipment and power control method |
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