CN204316176U - A kind of management system of dual power supply - Google Patents
A kind of management system of dual power supply Download PDFInfo
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- CN204316176U CN204316176U CN201420806582.8U CN201420806582U CN204316176U CN 204316176 U CN204316176 U CN 204316176U CN 201420806582 U CN201420806582 U CN 201420806582U CN 204316176 U CN204316176 U CN 204316176U
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Abstract
The utility model relates to field of power management, particularly relate to a kind of management system of dual power supply, mainly comprise main power source, battery-backed power source, load, the minus earth of main power source, positive pole connects the G pole of P channel MOS tube, and the D pole of P channel MOS tube received by the first diode of connecting, and the D pole of P channel MOS tube connects the positive pole of load, P channel MOS tube G pole connects a resistance over the ground, and the S pole of P channel MOS tube received by the positive pole of battery-backed power source the second diode of connecting.In the dual power supply system that the utility model provides, circuit is simple, and with low cost, reliability is high.Be greater than or equal in the electrical voltage system of battery-backed power source at the voltage of main power source, when duplicate supply exists simultaneously, two power supplys are isolated mutually, and electric current can not flow in the other side's power supply each other; And main power source is powered, battery-backed power source does not consume; Finally when primary power source de-energizes, battery-backed power source can be switched to rapidly and power, thus the work of the equipment of guarantee is continuous, close to the system power supply of seamless switching.
Description
Technical field
The utility model relates to field of power management, particularly when the voltage of main power source is greater than or equal to the voltage of battery-backed power source, and main power source and reserve battery dual power supply system.
Background technology
In main power source and reserve battery dual power supply system application process, if two power supplys exist simultaneously, main power source powering load, battery-backed power source is not powered; If when primary power source de-energizes, battery-backed power source is powered, and equipment work is continuous.
Current mainstream solution adopts large relay or touch switch directly to open or turns off or go here and there respectively with two diodes and carry out dual power supply on main electricity and stand-by power supply electrode line.Adopt large relay or touch switch directly to open or turn off this mode switch mains power and battery-backed power source is powered, due to this switching by relay physics inhale and, power so be switched to battery-backed power source by primary power source de-energizes, equipment work can be caused to restart, work discontinuous; And adopt two diodes to go here and there at main electricity and battery-backed power source electrode line respectively, although there is not main electric power cutoff device to restart, also there will not be current reflux to main power source or battery-backed power source, but when two power supplys exist simultaneously, if voltage phase difference is little, two power supplys all powering loads, so when not needing powered battery, this system reserve battery supply also can be powered, so also inadvisable.Therefore, need to provide a kind of duplicate supply switching time short and two power supplys exist simultaneously, main power source powering load, reserve battery does not need the Power transfer system of powering to solve the problem.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of voltage when main power source when being greater than or equal to the voltage of battery-backed power source, main power source and reserve battery duplicate supply electric supply system.
The technical solution of the utility model is achieved in that a kind of management system of dual power supply, mainly comprise main power source, battery-backed power source, load, the minus earth of main power source, positive pole connects the G pole of P channel MOS tube, and the D pole of P channel MOS tube received by the first diode of connecting, the D pole of P channel MOS tube connects the positive pole of load, and P channel MOS tube G pole connects a resistance over the ground, and the S pole of P channel MOS tube received by the positive pole of battery-backed power source the second diode of connecting.
As preferably, described first diode, the second diode are Schottky diode.
As preferably, stating resistance is 100k Ω.
The utility model is compared with prior art: in the dual power supply system that the utility model provides, circuit is simple, with low cost, reliability is high, be greater than or equal in the electrical voltage system of battery-backed power source at the voltage of main power source, time duplicate supply is simultaneous, two power supplys are isolated mutually, and electric current can not flow in the other side's power supply each other; And main power source is powered, reserve battery does not consume; Finally when primary power source de-energizes, reserve battery can be switched to rapidly and power, thus the work of the equipment of guarantee is continuous, close to the system power supply of seamless switching.
Accompanying drawing explanation
Fig. 1 circuit diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, Fig. 1 is the system architecture diagram of main power source according to the utility model embodiment and battery-backed power source power supply management system.The management system of a kind of dual power supply described in the utility model, mainly comprise main power source 1, battery-backed power source 2, load 3, the minus earth of main power source 1, positive pole connects the G pole of P channel MOS tube 4, and the D pole of P channel MOS tube 4 received by the first diode 5 (preferred Schottky diode) of connecting, the D pole of P channel MOS tube 4 connects the positive pole of load 3, the G pole of P channel MOS tube 4 connects the resistance of a 100k Ω over the ground, and the S pole of P channel MOS tube 4 received by the positive pole of battery-backed power source the second diode 6 (preferred Schottky diode) of connecting.
When main power source 1 and battery-backed power source 2 exist simultaneously, when the pressure reduction of G pole and S pole is greater than or equal to 0V, S pole and D pole not conducting, thus main power source 1 powers to load 3, and also prevent the current reflux of main power source 1 in the middle of battery-backed power source 2 by series connection second diode 6 due to the positive pole of battery-backed power source 2; When main power source 1 power-off, because G pole has connect a resistance over the ground, so that present is 0V, namely the pressure reduction of G pole and S pole equals negative battery voltage value, according to the characteristic of P channel MOS tube 4, and S pole and the conducting of D pole, battery-backed power source 2 is powered, because G end has first diode 5, the electric current that also prevent battery flows to inside main power source 1, thus makes system more reliable.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. the management system of a dual power supply, it is characterized in that: mainly comprise main power source, battery-backed power source, load, the minus earth of main power source, positive pole connects the G pole of P channel MOS tube, and the D pole of P channel MOS tube received by the first diode of connecting, the D pole of P channel MOS tube connects the positive pole of load, and P channel MOS tube G pole connects a resistance over the ground, and the S pole of P channel MOS tube received by the positive pole of battery-backed power source the second diode of connecting.
2. the management system of a kind of dual power supply according to claim 1, is characterized in that: described first diode, the second diode are Schottky diode.
3. the management system of a kind of dual power supply according to claim 1, is characterized in that: described resistance is 100k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420806582.8U CN204316176U (en) | 2014-12-18 | 2014-12-18 | A kind of management system of dual power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420806582.8U CN204316176U (en) | 2014-12-18 | 2014-12-18 | A kind of management system of dual power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316176U true CN204316176U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420806582.8U Expired - Fee Related CN204316176U (en) | 2014-12-18 | 2014-12-18 | A kind of management system of dual power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN204316176U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404135A (en) * | 2015-12-08 | 2016-03-16 | 青岛歌尔声学科技有限公司 | Real-time clock power supply circuit and method |
| CN106026372A (en) * | 2016-07-29 | 2016-10-12 | 江西洪都航空工业集团有限责任公司 | Remote measuring equipment adaptive power supply device |
| CN106341036A (en) * | 2016-09-23 | 2017-01-18 | 武汉烽火众智数字技术有限责任公司 | Circuit with overvoltage protection and current accumulation |
| CN106787130A (en) * | 2016-12-20 | 2017-05-31 | 深圳市元征科技股份有限公司 | A kind of power supply switch circuit and terminal |
| CN108877719A (en) * | 2018-07-25 | 2018-11-23 | 惠科股份有限公司 | power supply device and display device |
| CN109460802A (en) * | 2018-10-31 | 2019-03-12 | 成都航空职业技术学院 | Skate monitoring system and its monitoring method based on wireless transmission and RFID |
| CN109861375A (en) * | 2019-02-01 | 2019-06-07 | 深圳市航天无线通信技术有限公司 | Double-power supply switching device and automobile |
| CN111412998A (en) * | 2019-12-30 | 2020-07-14 | 上海贤业电气科技有限公司 | Wireless temperature measurement active and passive integrated temperature sensor circuit |
-
2014
- 2014-12-18 CN CN201420806582.8U patent/CN204316176U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404135A (en) * | 2015-12-08 | 2016-03-16 | 青岛歌尔声学科技有限公司 | Real-time clock power supply circuit and method |
| CN106026372A (en) * | 2016-07-29 | 2016-10-12 | 江西洪都航空工业集团有限责任公司 | Remote measuring equipment adaptive power supply device |
| CN106341036A (en) * | 2016-09-23 | 2017-01-18 | 武汉烽火众智数字技术有限责任公司 | Circuit with overvoltage protection and current accumulation |
| CN106787130A (en) * | 2016-12-20 | 2017-05-31 | 深圳市元征科技股份有限公司 | A kind of power supply switch circuit and terminal |
| CN106787130B (en) * | 2016-12-20 | 2019-08-02 | 深圳市元征科技股份有限公司 | A kind of power supply switch circuit and terminal |
| CN108877719A (en) * | 2018-07-25 | 2018-11-23 | 惠科股份有限公司 | power supply device and display device |
| US11303119B2 (en) | 2018-07-25 | 2022-04-12 | HKC Corporation Limited | Power supply device and display device |
| CN109460802A (en) * | 2018-10-31 | 2019-03-12 | 成都航空职业技术学院 | Skate monitoring system and its monitoring method based on wireless transmission and RFID |
| CN109861375A (en) * | 2019-02-01 | 2019-06-07 | 深圳市航天无线通信技术有限公司 | Double-power supply switching device and automobile |
| CN111412998A (en) * | 2019-12-30 | 2020-07-14 | 上海贤业电气科技有限公司 | Wireless temperature measurement active and passive integrated temperature sensor 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: 20150506 Termination date: 20181218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |