CN202424296U - Two-way power supply unit - Google Patents
Two-way power supply unit Download PDFInfo
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- CN202424296U CN202424296U CN2011204720997U CN201120472099U CN202424296U CN 202424296 U CN202424296 U CN 202424296U CN 2011204720997 U CN2011204720997 U CN 2011204720997U CN 201120472099 U CN201120472099 U CN 201120472099U CN 202424296 U CN202424296 U CN 202424296U
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Abstract
The utility model relates to a two-way power supply unit, and belongs to the field of electronic circuits. The two-way power supply unit comprises a rectification module, a charging switching circuit module, a backup power source module, a two-way power supply module, an LDO (low dropout regulator) module and an MCU (microprogrammed control unit) module, wherein one end of the rectification module is connected with an alternative current commercial power, and the other end of the rectification module is connected with the two-way power supply module and the charging switching circuit module; the charging switching circuit module is connected with the backup power source module, the backup power source module is connected with the two-way power supply module, the two-way power supply module is connected with the LDO module, and the LDO module is connected with the MCU module; and the MCU module is respectively connected with the backup power source module, the charging switching circuit module and the two-way power supply module. When the alternative current commercial power carries out normal power supply, the MCU module cuts off the backup power source module, the electrical energy of the backup power source module is not consumed, the charging switching circuit module is controlled to charge for the backup power source module, and the service life of the backup power source module is prolonged; and when the alternative current commercial power is powered down, the MCU module controls the backup power source module to supply power for the MCU module, and the MCU module can continue to work.
Description
Technical field
The utility model belongs to the electronic circuit technology field, relates in particular to a kind of device that supplies power with double circuit.
Background technology
In the information age; No matter be the visual plants such as computer equipment, the webserver or data storage that government department or large enterprise use; The situation that makes the equipment of working loss of vital data occur for the power down suddenly of anti-stopping power electricity takes place, and all needs the deposit energy of configuration standard time or " long delay " to guarantee the normal use of system usually.Backup battery is as a kind of deposit energy, along with the high speed development and extensively the quoting of computer system of information technology are arisen at the historic moment.
Lithium ion battery and ferric phosphate lithium cell secondary cells such as (iron cells) becomes the main flow backup battery product in market rapidly owing to have high-energy-density, long-life, pollution-free, advantage such as volume is little, be convenient to carry.In order to prevent that battery from occurring overcharging or over-discharge state, guarantee the security performance of battery and avoid occurring battery behavior to worsen phenomenon, must in secondary battery such as lithium ion battery and ferric phosphate lithium cell, protective circuit be installed.Because MCU (Micro Control Unit; Chinese is a micro-control unit) have characteristics such as calculation function is powerful, software programming is flexible; With it is that the protective circuit of core has possessed function diversification thus; Use flexibly, the outstanding advantage that extensibility is high becomes the design of main flow in the battery protecting circuit gradually.
Owing to guarantee that backup battery charges normal and a plurality of functional circuits of discharging are all controlled realization by MCU, therefore be even more important for MCU provides reliable and stable power supply assurance MCU reliable and stable work.The prior art power supply plan is following: use mechanical switch to insert backup battery, producing insulating power supply through the DC/DC conversion then is the MCU power supply.This conceptual design cost is high, operation inconvenience, and backup battery most of the time section is in not the stage to the external loading power devices; At this moment backup battery still keeps functional circuits such as MCU are supplied power; Time one is long, causes the backup battery self discharge serious, influences the useful life of backup battery.
The utility model content
The utility model is serious for the backup battery self discharge that solves existing power supply plan and cause, influence the backup battery technical problem in useful life, and a kind of device that supplies power with double circuit that electric energy can be provided as required is provided.
A kind of device that supplies power with double circuit comprises:
Rectification module is used for electric main is carried out rectification;
The charging conversion circuit module, the voltage that is used under the control of MCU module, rectification module being exported boosts, in order to give the charging of back-up source module;
The back-up source module is used to provide electric energy;
The module that supplies power with double circuit is used to isolate said rectification module and LDO module, and isolates back-up source module and LDO module;
The LDO module is used for voltage is carried out linear voltage stabilization;
The MCU module is used to control the charging conversion circuit module and gives the charging of back-up source module, and the state-of-charge that detects the back-up source module is with the supply access of the module of selecting to supply power with double circuit;
Said rectification module one end connects electric main, and the other end connects said module and the said charging conversion circuit module of supplying power with double circuit; Said charging conversion circuit module connects said back-up source module; Said back-up source module connects the said module that supplies power with double circuit; The said module that supplies power with double circuit connects said LDO module; Said LDO module connects said MCU module; Said MCU module connects said back-up source module, charging conversion circuit module and the module that supplies power with double circuit respectively.
This supplies power with double circuit device when the electric main normal power supply, and the MCU module is cut off the power supply of back-up source module, does not consume the electric energy of back-up source module, and control charging conversion circuit module is given the charging of back-up source module, the useful life of improving the back-up source module; When the electric main power down, the MCU module controls module that supplies power with double circuit makes the back-up source module give the MCU module for power supply, guarantees that the MCU module can continue operate as normal.
Description of drawings
Fig. 1 is the device sketch map that supplies power with double circuit that the utility model embodiment 1 provides.
Fig. 2 is the device sketch map that supplies power with double circuit that the utility model embodiment 2 provides.
Fig. 3 is the device sketch map that supplies power with double circuit that the utility model embodiment 3 provides.
Fig. 4 is the switch module circuit diagram that the utility model embodiment provides.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Backup battery most of the time section is in not the stage to the external loading power devices in the prior art, but still keeps the MCU module is supplied power, and the time one is long, causes the backup battery self discharge serious, influences the useful life of backup battery.The purpose of the utility model is to provide a kind of device that supplies power with double circuit, and has solved high, the unhandy technical problem of the MCU module for power supply circuit design cost that exists in the existing technology, the useful life that can also improve backup battery.
As shown in Figure 1; The device sketch map that supplies power with double circuit that provides for the utility model embodiment 1; This device that supplies power with double circuit comprises rectification module 11, charging conversion circuit module 12, back-up source module 13, the module that supplies power with double circuit 14, LDO (low dropout regulator means low pressure difference linear voltage regulator) module 15, MCU module 16.
Said rectification module 11 is used for electric main is carried out rectification; The voltage that said charging conversion circuit module 12 is used under the control of MCU module 16, rectification module 11 being exported boosts, in order to give the back-up source module 13 chargings; Said back-up source module 13 is used to provide electric energy; The said module 14 that supplies power with double circuit is used to isolate said rectification module 11 and LDO module 15, and isolates back-up source module 13 and LDO module 15; Said LDO module 15 is used for voltage is carried out linear voltage stabilization; Said MCU module 16 is used to control charging conversion circuit module 12 and gives the back-up source module 13 chargings, and the state-of-charge that detects back-up source module 13 is with the supply access of the module 14 of selecting to supply power with double circuit;
Said rectification module 11 1 ends connect electric main, and the other end connects said module 14 and the said charging conversion circuit module 12 of supplying power with double circuit; Said charging conversion circuit module 12 connects said back-up source module 13; Said back-up source module 13 connects the said module 14 that supplies power with double circuit; The said module 14 that supplies power with double circuit connects said LDO module 15; Said LDO module 15 connects said MCU module 16; Said MCU module 15 connects said back-up source module 13, charging conversion circuit module 12 and the module 14 that supplies power with double circuit respectively.
LDO is a low pressure difference linear voltage regulator, is with respect to traditional linear voltage regulator.Traditional linear voltage regulator, the chip serial like 78xx all requires input voltage to want specific output voltage to exceed more than 2v ~ 3V, otherwise with regard to cisco unity malfunction.But in some cases, such condition obviously is too harsh, changes 3.3v like 5v, and input has only 1.7v with the pressure reduction of exporting, and does not obviously satisfy condition.To this situation, the power conversion chip of LDO class has been arranged.Adopt the LDO module here, be that its output accuracy Gao Wenbo is little, being convenient to provides power supply to the MCU module.
This supplies power with double circuit device when the electric main normal power supply, and the MCU module is cut off the power supply of back-up source module, does not consume the electric energy of back-up source module, and control charging conversion circuit module is given the charging of back-up source module, the useful life of improving the back-up source module; When the electric main power down, the MCU module controls module that supplies power with double circuit makes the back-up source module give the MCU module for power supply, guarantees that the MCU module can continue operate as normal.As the utility model embodiment 2, as shown in Figure 2, comprising: rectification module 21, charging modular converter 22, back-up source module 23, first are isolated branch road 241, second and are isolated branch road 242, LDO module 25, MCU module 26.
Compare with embodiment 1, this embodiment module that will supply power with double circuit is specially: first isolates branch road 241, second isolates branch road 242.
Said first isolates branch road 241 is connected between said rectification module 21 and the said LDO module 25;
Said second isolates branch road 242 is connected between said back-up source module 23 and the said LDO module 25;
Said MCU module 26 connects said second and isolates branch road 242.
The first isolation branch road and second is isolated branch road makes the electric current one-way flow in two branch roads; Avoid the voltage of first path to isolate the branch road supply power voltage instability that charging causes to the back-up source module, thereby also avoid the voltage of alternate path unstable through the supply power voltage that the first isolation branch road reverse circulated causes through second; In addition, at the electric main normal power supply, back-up source module state-of-charge is 100% o'clock; Second isolates branch road can also break off under the control of MCU module; Eliminate the back-up source module for power supply, cause the serious phenomenon of back-up source module self discharge, improve the useful life of back-up source module.
As the utility model embodiment 3; As shown in Figure 3, comprising: rectification module 31, charging conversion circuit module 32, back-up source module 33, first isolating diode 341, second isolating diode 3421, switch module 3422, reverse breakdown diode 3423, LDO module 35, MCU module 36.Said first isolates branch road specifically comprises first isolating diode 341, and said second isolates branch road specifically comprises: second isolating diode 3421, switch module 3422, reverse breakdown diode 3423.
Compare with embodiment 2, first isolating diode 341 is equivalent to first among the embodiment 2 and isolates branch road among this embodiment.This first isolating diode 341 is the forward conduction diode, is convenient to isolation rectification module 31 and LDO module 35.Second isolating diode 3421, switch module 3422, reverse breakdown diode 3423 are equivalent to second among the embodiment 2 and isolate branch road, and said second isolating diode, 3,421 one ends connect said back-up source module 33, and the other end connects said switch module 3422; Said switch module 3422 connects said reverse breakdown diode 3423; Said reverse breakdown diode 3423 connects said LDO module 35; Said MCU module 36 connects said switch module 3422.
This second isolating diode 3421 is the forward conduction diode, is convenient to isolate back-up source module 33 and switch module 3422.
The switch module physical circuit that said the utility model embodiment provides is as shown in Figure 4, comprising: the first electronic switch Q1, the second electronic switch Q2, the first protective resistance R1, the second protective resistance R2;
The source electrode of the said first electronic switch Q1 is connected with the said second isolating diode output, and drain electrode connects said reverse breakdown diode; Grid connects the drain electrode of the said second electronic switch Q2;
The source ground of the said second electronic switch Q2, grid is connected with said MCU module;
The said first protective resistance R1 is connected between the grid and source electrode of the said first electronic switch Q1, and the said second protective resistance R2 is connected between the grid and source electrode of the said second electronic switch Q2.
Said first electronic switch is the PMOS pipe, and said second electronics is the NMOS pipe.
Supplying power with double circuit, rectification module converts said electric main into the 12V direct current in the device.The demand that meets supply power voltage.
Because secondary cells such as lithium ion battery and ferric phosphate lithium cell are owing to having high-energy-density, long-life, pollution-free, advantage such as volume is little, be convenient to carry, said back-up source module is chosen lithium ion battery or ferric phosphate lithium cell or lithium ion battery group or ferric phosphate lithium cell group.
Combine Fig. 3, Fig. 4 that the operation principle of the device that supplies power with double circuit is detailed at present, specific as follows:
When the device that supplies power with double circuit began to supply power, charging conversion circuit module 32 was in closed condition, and switch module 3244 is in off state.
When the electric main normal power supply, the 12V direct current of rectification module 31 output is linked into the input of LDO module 35 through first isolating diode 341, makes the suitable burning voltage of the output output of LDO module 35 to MCU module 36, supplies power for MCU module 36.Simultaneously, MCU module 36 output enable signals are given charging conversion circuit module 32, and charging conversion circuit module 32 is opened, and 12 volts of direct currents that rectification module 31 is exported boost, and give the back-up source module 33 chargings; After charging finished, charging conversion circuit module 32 was closed automatically.
When the electric main power down; The voltage that LDO module 35 offers MCU module 36 changes; This moment, MCU module 36 was according to outputting a control signal to the second electronic switch Q2 conducting in the switch module 3422 control switch modules 3422; Thereby control the first electronic switch Q1 conducting; Reverse breakdown diode 3423 is reversed puncture, and back-up source module 33 provides stable voltage for MCU module 36 through second isolating diode, 3421 switch modules 3422, reverse breakdown diode 3423, LDO module 35, thereby guarantees MCU module 36 operate as normal.
When exchanging the city once more during normal power supply; The 12V direct current of rectification module 31 outputs is linked into the input of LDO module 35 through first isolating diode 341; Make the output of LDO module 35 export suitable burning voltage, give the MCU module 36 power supplies to MCU module 36.Simultaneously, MCU module 36 output enable signal is once more given charging conversion circuit module 32, and charging conversion circuit module 32 is opened, and 12 volts of direct currents that rectification module 31 is exported boost, and gives the back-up source module 33 chargings; During with convenient electric main power down, back-up source module 33 has enough electric weight to keep the normal operation with MCU module 36.After charging finished, charging conversion circuit module 32 was closed automatically.
In charging process, when the voltage of back-up source module 33 during less than 12V voltage, reverse breakdown diode 3423 forward conductions; But because the existence of second isolating diode 3421; Second isolating diode 3421 oppositely ends, and therefore, 12V voltage can be directly to back-up source module 33 reverse charges; Avoid causing the voltage fluctuation of LDO module 35 inputs, realize the power supply that 12V voltage is reliable and stable to MCU module 36.When the voltage ratio 12V of back-up source module 33 voltage is high; Reverse breakdown diode 3423 is reversed puncture; Back-up source module 33 is input to the voltage of input of LDO module 343 less than 12V voltage through reverse breakdown diodes 3423, MCU module 35 is mainly by the 12V power voltage supply.
Back-up source module 33 is in not the externally stage of power supply for a long time when 33 chargings of back-up source module finish perhaps; MCU module 36 outputs a control signal to switch module 3422 to cut off the power supply of 33 pairs of MCU modules 36 of back-up source module; Prevent the 33 meaningless losses of back-up source module; Reduce back-up source module 33 charging times and charge frequency repeatedly, the useful life of raising back-up source module 33.
This supplies power with double circuit device when the electric main normal power supply, and the MCU module is cut off the power supply of back-up source module, does not consume the electric energy of back-up source module, and control charging conversion circuit module is given the charging of back-up source module, the useful life of improving the back-up source module; When the electric main power down, the MCU module controls module that supplies power with double circuit makes the back-up source module give the MCU module for power supply, guarantees that the MCU module can continue operate as normal.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. the device that supplies power with double circuit is characterized in that, comprising:
Rectification module is used for electric main is carried out rectification;
The charging conversion circuit module, the voltage that is used under the control of MCU module, rectification module being exported boosts, in order to give the charging of back-up source module;
The back-up source module is used to provide electric energy;
The module that supplies power with double circuit is used to isolate said rectification module and LDO module, and isolates back-up source module and LDO module;
The LDO module is used for voltage is carried out linear voltage stabilization;
The MCU module is used to control the charging conversion circuit module and gives the charging of back-up source module, and the state-of-charge that detects the back-up source module is with the supply access of the module of selecting to supply power with double circuit;
Said rectification module one end connects electric main, and the other end connects said module and the said charging conversion circuit module of supplying power with double circuit; Said charging conversion circuit module connects said back-up source module; Said back-up source module connects the said module that supplies power with double circuit; The said module that supplies power with double circuit connects said LDO module; Said LDO module connects said MCU module; Said MCU module connects said back-up source module, charging conversion circuit module and the module that supplies power with double circuit respectively.
2. the device that supplies power with double circuit as claimed in claim 1 is characterized in that, the said module that supplies power with double circuit specifically comprises: first isolates branch road, second isolates branch road;
Said first isolates branch road is connected between said rectification module and the said LDO module;
Said second isolates branch road is connected between said back-up source module and the said LDO module;
Said MCU module connects said second and isolates branch road.
3. the device that supplies power with double circuit as claimed in claim 2 is characterized in that, said first isolates branch road specifically comprises first isolating diode.
4. the device that supplies power with double circuit as claimed in claim 3 is characterized in that, said first isolating diode is the forward conduction diode.
5. the device that supplies power with double circuit as claimed in claim 2 is characterized in that, said second isolates branch road specifically comprises: second isolating diode, switch module, reverse breakdown diode;
Said second isolating diode, one end connects said back-up source module, and the other end connects said switch module; Said switch module connects said reverse breakdown diode; Said reverse breakdown diode connects said LDO module; Said MCU module output connects said switch module.
6. the device that supplies power with double circuit as claimed in claim 5 is characterized in that, said switch module comprises: first electronic switch, second electronic switch, first protective resistance, second protective resistance;
The source electrode of said first electronic switch is connected with the said second isolating diode output, and drain electrode connects said reverse breakdown diode; Grid connects the drain electrode of said second electronic switch;
The source ground of said second electronic switch, grid is connected with said MCU module;
Said first protective resistance is connected between the grid and source electrode of said first electronic switch, and said second protective resistance is connected between the grid and source electrode of said second electronic switch.
7. the device that supplies power with double circuit as claimed in claim 6 is characterized in that, said first electronic switch is the PMOS pipe, and said second electronics is the NMOS pipe.
8. the device that supplies power with double circuit as claimed in claim 5 is characterized in that, said second isolating diode is the forward conduction diode.
9. the device that supplies power with double circuit as claimed in claim 1 is characterized in that said rectification module converts said electric main into the 12V direct current.
10. the device that supplies power with double circuit as claimed in claim 1 is characterized in that, said back-up source module is lithium ion battery or ferric phosphate lithium cell or lithium ion battery group or ferric phosphate lithium cell group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204720997U CN202424296U (en) | 2011-11-24 | 2011-11-24 | Two-way power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204720997U CN202424296U (en) | 2011-11-24 | 2011-11-24 | Two-way power supply unit |
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| CN202424296U true CN202424296U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204720997U Expired - Lifetime CN202424296U (en) | 2011-11-24 | 2011-11-24 | Two-way power supply unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580274A (en) * | 2012-10-11 | 2014-02-12 | 易程（苏州）智能系统有限公司 | Uninterruptible protection power source system of video server for train |
| CN104679083A (en) * | 2013-11-27 | 2015-06-03 | 展讯通信（上海）有限公司 | Integrated circuit and electronic device |
| CN104953701A (en) * | 2015-06-24 | 2015-09-30 | 青岛鼎信通讯股份有限公司 | Isolation type battery power supply scheme |
| CN105553085A (en) * | 2014-10-21 | 2016-05-04 | 北京航天长征飞行器研究所 | Stable power supply system for rotation movement device in vacuum low-temperature environment |
| CN105632188A (en) * | 2016-01-26 | 2016-06-01 | 中国船舶重工集团公司第七一〇研究所 | Ultra-low power consumption wireless geomagnetic type vehicle detector and control method thereof |
| CN110323825A (en) * | 2019-06-10 | 2019-10-11 | 厦门四信通信科技有限公司 | A kind of power circuit switching device, method and internet of things equipment |
| WO2021103101A1 (en) * | 2019-11-29 | 2021-06-03 | 苏州贝昂科技有限公司 | Power supply method for double-circuit power supply device |
-
2011
- 2011-11-24 CN CN2011204720997U patent/CN202424296U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580274A (en) * | 2012-10-11 | 2014-02-12 | 易程（苏州）智能系统有限公司 | Uninterruptible protection power source system of video server for train |
| CN103580274B (en) * | 2012-10-11 | 2016-01-20 | 苏州华启智能科技有限公司 | The uninterrupted protection power source system of a kind of train domestic video server |
| CN104679083A (en) * | 2013-11-27 | 2015-06-03 | 展讯通信（上海）有限公司 | Integrated circuit and electronic device |
| CN104679083B (en) * | 2013-11-27 | 2016-06-01 | 展讯通信（上海）有限公司 | Unicircuit and electronics |
| CN105553085A (en) * | 2014-10-21 | 2016-05-04 | 北京航天长征飞行器研究所 | Stable power supply system for rotation movement device in vacuum low-temperature environment |
| CN104953701A (en) * | 2015-06-24 | 2015-09-30 | 青岛鼎信通讯股份有限公司 | Isolation type battery power supply scheme |
| CN104953701B (en) * | 2015-06-24 | 2017-07-11 | 青岛鼎信通讯股份有限公司 | A kind of isolated battery powdered device |
| CN105632188A (en) * | 2016-01-26 | 2016-06-01 | 中国船舶重工集团公司第七一〇研究所 | Ultra-low power consumption wireless geomagnetic type vehicle detector and control method thereof |
| CN110323825A (en) * | 2019-06-10 | 2019-10-11 | 厦门四信通信科技有限公司 | A kind of power circuit switching device, method and internet of things equipment |
| CN110323825B (en) * | 2019-06-10 | 2021-08-03 | 厦门四信通信科技有限公司 | Power circuit switching device and method and Internet of things equipment |
| WO2021103101A1 (en) * | 2019-11-29 | 2021-06-03 | 苏州贝昂科技有限公司 | Power supply method for double-circuit power supply device |
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Granted publication date: 20120905 |
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