CN202957647U - Switching device for standby battery and primary power supply - Google Patents
Switching device for standby battery and primary power supply Download PDFInfo
- Publication number
- CN202957647U CN202957647U CN2012205859997U CN201220585999U CN202957647U CN 202957647 U CN202957647 U CN 202957647U CN 2012205859997 U CN2012205859997 U CN 2012205859997U CN 201220585999 U CN201220585999 U CN 201220585999U CN 202957647 U CN202957647 U CN 202957647U
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- battery
- power supply
- cpu
- power source
- reserve battery
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- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a switching device for a standby battery and a primary power supply. The switching device comprises a switch tube, wherein the switch tube is respectively connected with the primary power supply and the standby battery; the primary power supply is connected with one input end of a CPU (Central Processing Unit) via a voltage detection circuit, and the other end of the CPU is connected with a power switching circuit; the power switching circuit is connected with the primary power supply and the standby battery; and an output end of the CPU is connected with the switch tube. According to the utility model, switching between the standby battery and the primary power supply is controlled by the CPU, wherein control is convenient; and according to requirements, time for disconnecting the battery can be conveniently controlled via programs, thereby being able to improve utilization efficiency of the battery, and prolonging the service life of the battery.
Description
Technical field:
The utility model relates to a kind of electric supply installation of acquiring electric energy information terminal, particularly relates to the switching device shifter of a kind of reserve battery and main power source.
Background technology:
In order to realize the Integrity And Reliability of acquiring electric energy information terminal data, increased reserve battery, after main power source has a power failure, can be switched to reserve battery, after completing the processing, storage of data, then close battery supply, thoroughly shutdown.Common mode is with two diodes, switched, but this mode can not effectively be closed battery supply, can only wait battery electric quantity to exhaust, and automatic shutdown, not only waste energy consumption but also affect operating efficiency.
The utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of reasonable in design, simple in structure, easy to use and energy-efficient reserve battery and the switching device shifter of main power source are provided.
The technical solution of the utility model is: the switching device shifter of a kind of reserve battery and main power source, contain switching tube, described switching tube is connected with reserve battery with main power source respectively, described main power source is connected with the input of CPU by voltage detecting circuit, another input of described CPU is connected with power-switching circuit, described power-switching circuit is connected with reserve battery with described main power source, and the output of described CPU is connected with described switching tube.
Described reserve battery is storage battery.Described reserve battery is rechargeable battery.
The beneficial effects of the utility model are:
1, the utility model is controlled the switching between reserve battery and main power source by CPU, and it is convenient to control; Can facilitate and control the length of closing battery time by program as required, can improve the utilization ratio of battery, extend battery.
2, the utility model is after system powers on, CPU monitors main power source by voltage detection module, when finding the main power source power down, start the reserve battery power supply by switching tube immediately, after finishing the work, while no longer needing the reserve battery power supply, CPU closes the reserve battery power supply by switching tube, thereby thoroughly cuts off the electricity supply.
3, the utility model is reasonable in design, simple in structure, easy to use and energy-efficient, is easy to promotion and implementation, has good economic benefit.
The accompanying drawing explanation:
The system block diagram of the switching device shifter that Fig. 1 is reserve battery and main power source;
The schematic diagram of Fig. 2 power supply switch circuit;
The schematic diagram of Fig. 3 voltage detecting circuit.
Embodiment:
Embodiment: referring to Fig. 1-Fig. 3, in figure, the switching device shifter of reserve battery and main power source contains switching tube, switching tube is connected with reserve battery with main power source respectively, main power source is connected with the input of CPU by voltage detecting circuit, another input of CPU is connected with power-switching circuit, and power-switching circuit is connected with reserve battery with main power source, and the output of CPU is connected with described switching tube.
Reserve battery is storage battery.Reserve battery is rechargeable battery.
After system powers on, CPU monitors main power source by voltage detecting circuit, when finding the main power source power down, start the reserve battery power supply by switching tube immediately, after finishing the work, while no longer needing the reserve battery power supply, CPU closes powered battery by switching tube again, thus the power supply thoroughly cut off.System block diagram as shown in Figure 1.
As shown in Figure 2, Vin is main power source to electrical source exchange, by D1 to Vout, gives system power supply.When powered battery, D1 prevents that cell voltage from playing a reversed role to Power supply.When powered battery is opened, battery source, by D2 to Vout, is given system power supply.When main power source is powered, D2 prevents from not closing in time battery control and causes to powered battery, thereby causes fault.BatCtrl is connected on the IO pin of CPU, by controlling its low and high level, realizes the break-make of Q20 is controlled, and then controls conducting and the shutoff of Q1, thereby reach the purpose whether control allows reserve battery power.The charging input is connected to special-purpose charge management module, when power supply has electricity, is responsible for charging to reserve battery.
Voltage detecting circuit has multiple implementation, Fig. 3 has just utilized the miscellaneous function of SP706 to realize voltage detecting, according to the requirement to inspection voltage, the resistance of adjusting resistance R8, R9, R10 gets final product, and R9, R10 select suitable resistance and increase for convenient more.Also can change other check circuit into.
Claims (3)
1. the switching device shifter of a reserve battery and main power source, contain switching tube, described switching tube is connected with reserve battery with main power source respectively, it is characterized in that: described main power source is connected with the input of CPU by voltage detecting circuit, another input of described CPU is connected with power-switching circuit, described power-switching circuit is connected with reserve battery with described main power source, and the output of described CPU is connected with described switching tube.
2. the switching device shifter of reserve battery according to claim 1 and main power source, it is characterized in that: described reserve battery is storage battery.
3. the switching device shifter of reserve battery according to claim 1 and main power source, it is characterized in that: described reserve battery is rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205859997U CN202957647U (en) | 2013-03-01 | 2013-03-01 | Switching device for standby battery and primary power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205859997U CN202957647U (en) | 2013-03-01 | 2013-03-01 | Switching device for standby battery and primary power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957647U true CN202957647U (en) | 2013-05-29 |
Family
ID=48463199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205859997U Expired - Fee Related CN202957647U (en) | 2013-03-01 | 2013-03-01 | Switching device for standby battery and primary power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957647U (en) |
-
2013
- 2013-03-01 CN CN2012205859997U patent/CN202957647U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20180301 |