CN201860166U - Battery switching circuit for medical power supply - Google Patents
Battery switching circuit for medical power supply Download PDFInfo
- Publication number
- CN201860166U CN201860166U CN2010205837221U CN201020583722U CN201860166U CN 201860166 U CN201860166 U CN 201860166U CN 2010205837221 U CN2010205837221 U CN 2010205837221U CN 201020583722 U CN201020583722 U CN 201020583722U CN 201860166 U CN201860166 U CN 201860166U
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- China
- Prior art keywords
- power supply
- diode
- switching tube
- voltage
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a battery switching circuit for a medical power supply, comprising a first diode and a second diode, wherein the anode of the first diode is connected with a DC power supply end, and the anode of the second diode is connected with a battery power supply end; the cathodes of the first diode and the second diode are connected in parallel and then connected with an electricity-consumption circuit at the rear end; a switching tube is arranged between the battery power supply end and the electricity-consumption circuit; and the DC power supply end is connected with a voltage detection module, the output end of the voltage detection module is connected with the input end of a switching tube driving module, and the output end of the switching tube driving module is connected with the control end of the switching tube. The battery switching circuit has a simple structure and low fabrication cost, and can realize automatic switching of power supply functions to conveniently make up the power supply defect caused by unstable mains supply; and according to the battery switching circuit for the medical power supply, the switching tube is driven to be opened, so that a battery can directly supply power for the electricity-consumption circuit without the second diode, thus achieving the purpose of reducing power consumption.
Description
Technical field
The utility model relates to a kind of circuit structure, particularly a kind of battery switching circuit that is used for medical power supply.
Background technology
Medical Devices are higher relatively to the requirement of the stability of powering, and except general mains-supplied, it also can additionally be provided with the input of one road battery, to remedy the power supply defective that the civil power instability is brought.Traditional Medical Devices normally cooperate switching tube directly actuated by application-specific integrated circuit when civil power and powered battery are switched, this control circuit needs 4 switching tubes to realize at least, therefore its cost of manufacture is higher, and has the complicated shortcoming of control.
The utility model content
For addressing the above problem, the utility model provides the battery switching circuit that is used for medical power supply that a kind of automatic realization power supply is switched, cost is low, power consumption is little.
The utility model is that the technical scheme that its problem of solution is adopted is:
The battery switching circuit that is used for medical power supply, comprise first diode and second diode, the anode of first diode is connected with dc power supply terminal after the conversion of commercial power rectification, the anode of second diode is connected with the powered battery end, the negative electrode of first diode and second diode and connect the back be connected with the power circuit of rear end, also be provided with a switching tube between described powered battery end and the power circuit, be connected to a voltage detection module on the dc power supply terminal, the output of voltage detection module is connected with the input of a switching tube driver module, and the output of switching tube driver module links to each other with control end of switching tube.
As preferred embodiment, described voltage detection module comprises a voltage-stabiliser tube and resistance, the negative electrode of described voltage-stabiliser tube is connected with dc power supply terminal, and the anode of voltage-stabiliser tube links to each other with ground by resistance, and the input of switching tube driver module is connected on the connecting line of the anode of voltage-stabiliser tube and resistance.
The beneficial effects of the utility model are: the utility model is formed simple, cost of manufacture is low, the conducting off state of its first diode and second diode is decided by the voltage height situation at two ends, during work, the output voltage of supposing dc power supply terminal enough high (being higher than the voltage output of powered battery end), so this moment first diode current flow, dc power supply terminal power circuit power supply to the back-end, magnitude of voltage on the power circuit of rear end deducts the diode drop value greater than the voltage output of powered battery end, second diode is closed, the powered battery end is not powered, as a same reason, when the output voltage of dc power supply terminal was lower than the voltage output of powered battery end, first diode was closed, second diode current flow, dc power supply terminal is not powered, the power supply of powered battery end, therefore, the utility model can be realized the function of supplying power that automaticallyes switch by above-mentioned work, exports by battery easily and remedies the power supply defective that the civil power instability is brought; In addition, the utility model further is provided with a switching tube between powered battery end and power circuit, the break-make of this switching tube can be switched based on the voltage swing on the dc power supply terminal, usually, when the direct current supply terminal voltage is too small, voltage detection module can change the signal that outputs in the switching tube driver module, it is open-minded that the switching tube driver module orders about switching tube based on this signal, can be so that battery pass through second diode and does not directly power to power circuit, thereby avoid producing pressure drop, reach the purpose that reduces power consumption.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the block diagram of system of the present utility model;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, the battery switching circuit that is used for medical circuit of the present utility model, comprise first diode 1 and second diode 2, the anode of first diode 1 is connected with dc power supply terminal 3 after the conversion of commercial power rectification, the anode of second diode 2 is connected with powered battery end 4, the negative electrode of first diode 1 and second diode 2 and connect the back be connected with the power circuit 5 of rear end, also be provided with a switching tube 6 between described powered battery end 3 and the power circuit 5, be connected to a voltage detection module 7 on the dc power supply terminal 3, the output of voltage detection module 7 is connected with the input of a switching tube driver module 8, and the output of switching tube driver module 8 links to each other with the control end of switching tube 6.
Automatic switchover function of supplying power of the present utility model is realized in the following manner: the conducting off state of first diode 1 and second diode 2 is decided by the voltage height situation at two ends, during work, the output voltage of supposing dc power supply terminal 3 enough high (being higher than the voltage output of powered battery end 4), first diode, 1 conducting this moment so, dc power supply terminal 3 power circuit 5 power supplies to the back-end, magnitude of voltage on the rear end power circuit 5 deducts diode 2 voltage drop values greater than the voltage output of powered battery end 4, second diode 2 is closed, powered battery end 4 is not powered, as a same reason, when the output voltage of dc power supply terminal 3 is lower than the voltage output of powered battery end 4, first diode 1 is closed, 2 conductings of second diode, dc power supply terminal 3 is not powered, 4 power supplies of powered battery end.
In addition, because the utility model is provided with a switching tube 6 between powered battery end 4 and power circuit 5, when dc power supply terminal 3 voltages are too small, voltage detection module 7 can change the signal that outputs in the switching tube driver module 8, it is open-minded that switching tube driver module 8 orders about switching tube 6 based on this signal, can so that powered battery end 4 by second diode 2 and directly to power circuit 5 power supply, thereby avoid producing pressure drop, reach the purpose that reduces power consumption.
When practical application, voltage detection module 7 preferably includes a voltage-stabiliser tube DZ2 and resistance R 27, the negative electrode of described voltage-stabiliser tube DZ2 is connected with dc power supply terminal 3, the anode of voltage-stabiliser tube DZ2 links to each other with ground GND by resistance R 27, and the input of switching tube driver module 8 is connected on the connecting line of the anode of voltage-stabiliser tube DZ2 and resistance R 27.When dc power supply terminal 3 output voltages are higher than the reverse burning voltage of voltage-stabiliser tube DZ2, voltage-stabiliser tube DZ2 conducting, the voltage swing of contact approximates amassing of resistance R 27 and flow through size of current between the anode of voltage-stabiliser tube DZ2 and the resistance R 27, the input of switching tube driver module 8 has the high level input, when dc power supply terminal 3 output voltages are not enough, voltage-stabiliser tube DZ2 closes, the voltage swing of node is 0 between the anode of voltage-stabiliser tube DZ2 and the resistance R 27, the input of switching tube driver module 8 is low level input, and 8 need of switching tube driver module satisfy to be ordered about switching tube 5 and close when high level is imported, order about switching tube 5 conductings during the low level input and can satisfy functional requirement.
With reference to Fig. 2, be the circuit theory diagrams of a kind of embodiment of the present utility model.Switching tube driver module 8 in the present embodiment is for being the circuit that core is formed with two P type triodes, and switching tube 5 adopts PMOS to realize.When dc power supply terminal 3 output voltages are not enough, the voltage detection module 7 that voltage-stabiliser tube DZ2 and resistance R 27 are formed is to the base stage output low level of P type triode Q4, the Q4 conducting, and then make the level of collector electrode of Q4 become low level, P type triode Q5 is further conducting under this low level effect, the control end input of switching tube Q8 becomes low level, the Q8 conducting, and the battery output is directly powered to power circuit 5 by the switching tube Q8 of conducting.
Claims (2)
1. the battery switching circuit that is used for medical power supply, it is characterized in that comprising first diode (1) and second diode (2), the anode of first diode (1) is connected with dc power supply terminal (3) after the conversion of commercial power rectification, the anode of second diode (2) is connected with powered battery end (4), the negative electrode of first diode (1) and second diode (2) and connect the back be connected with the power circuit (5) of rear end, also be provided with a switching tube (6) between described powered battery end (3) and the power circuit (5), be connected to a voltage detection module (7) on the dc power supply terminal (3), the output of voltage detection module (7) is connected with the input of a switching tube driver module (8), and the output of switching tube driver module (8) links to each other with the control end of switching tube (6).
2. the battery switching circuit that is used for medical power supply according to claim 1, it is characterized in that described voltage detection module (7) comprises a voltage-stabiliser tube (DZ2) and resistance (R27), the negative electrode of described voltage-stabiliser tube (DZ2) is connected with dc power supply terminal (3), the anode of voltage-stabiliser tube (DZ2) links to each other with ground (GND) by resistance (R27), and the input of switching tube driver module (8) is connected on the connecting line of the anode of voltage-stabiliser tube (DZ2) and resistance (R27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205837221U CN201860166U (en) | 2010-10-30 | 2010-10-30 | Battery switching circuit for medical power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205837221U CN201860166U (en) | 2010-10-30 | 2010-10-30 | Battery switching circuit for medical power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201860166U true CN201860166U (en) | 2011-06-08 |
Family
ID=44105965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205837221U Expired - Fee Related CN201860166U (en) | 2010-10-30 | 2010-10-30 | Battery switching circuit for medical power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201860166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377811A (en) * | 2014-11-26 | 2015-02-25 | 南宁一举医疗电子有限公司 | X-ray machine power switching system based on lead-acid storage battery energy storage and grid electricity |
| CN108418300A (en) * | 2018-05-09 | 2018-08-17 | 广州大学 | A kind of standby usage battery powered automatic switchover output circuit |
-
2010
- 2010-10-30 CN CN2010205837221U patent/CN201860166U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377811A (en) * | 2014-11-26 | 2015-02-25 | 南宁一举医疗电子有限公司 | X-ray machine power switching system based on lead-acid storage battery energy storage and grid electricity |
| CN108418300A (en) * | 2018-05-09 | 2018-08-17 | 广州大学 | A kind of standby usage battery powered automatic switchover output circuit |
| CN108418300B (en) * | 2018-05-09 | 2023-08-08 | 广州大学 | Main and standby battery power supply automatic switching output circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20191030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |