CN2859893Y - Selective circuit of main battery and emergency battery - Google Patents
Selective circuit of main battery and emergency battery Download PDFInfo
- Publication number
- CN2859893Y CN2859893Y CN 200520043860 CN200520043860U CN2859893Y CN 2859893 Y CN2859893 Y CN 2859893Y CN 200520043860 CN200520043860 CN 200520043860 CN 200520043860 U CN200520043860 U CN 200520043860U CN 2859893 Y CN2859893 Y CN 2859893Y
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- China
- Prior art keywords
- battery
- circuit
- main battery
- electric power
- signal
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a selective circuit of main battery and emergency battery, including a voltage detection circuit, a device starting estimation circuit and a cell selection circuit. The utility model uses the digital logic circuit to replace the selective circuit of main battery and emergency battery designed in the analog circuit, thereby reducing the complexity of the circuit to simplify the way of design.
Description
Technical field
The utility model relates to a kind of Digital Logic and selects circuit, and particularly relevant for the selection circuit of a kind of main battery and reserve battery.
Background technology
Along with the progress of electronic technology, more and more Duo device also is tending towards electronization, and the appliance and electronic small-sized as electronic dictionary, PDA or the like also and then comes into vogue.
The required electric power of its running of general small-sized electronic installation is normally provided by dry cell, when the power drain of dry cell, just essential change one group of new battery can regular event with holdout device.But sometimes because the user do not note, allow this electronic installation up to the electric power of battery depleted fully still more do not renew battery, caused the data in the device may so and run off.Understand the phenomenon that run off because of power shortage for fear of data, common this electronic installation all can dispose one group of reserve battery in addition, when the electric power of main battery is about to use up, this device will come circuit switched by the selection circuit of battery, the source that electric power is supplied with in time, switch to reserve battery by main battery originally, to push away the normal operation of holding device.
According to traditional design, the selection circuit of this supplying cell is all designed by analog circuit, but with the designed selection circuit that comes out of analog form very the complexity of huge, ten minutes often.
Summary of the invention
In view of this, order of the present utility model is to propose the selection circuit of a kind of main battery and reserve battery, and this selects circuit is to utilize the mode of digital logic gate to finish, to reduce the complexity of this kind circuit when designing.
For reaching the utility model above-mentioned purpose, the utility model proposes the selection circuit of a kind of main battery and reserve battery, this selects circuit to couple main battery and switch of electronic device, and according to received signal, comes the battery switching circuit of control device.The commutation circuit of this main battery and reserve battery comprises that voltage detecting circuit, device start decision circuitry, and battery is selected circuit.Whether wherein voltage detecting circuit is coupled to main battery, sufficient in order to the electric power of detecting main battery, and exports the sufficient signal of an electric power.Device startup decision circuitry is coupled to switch of electronic device, in order to the sufficient signal of reception electric power, and according to this switch of electronic device and the sufficient signal of this electric power, and output device starts the judgement signal.Battery selects circuit to judge signal in order to receive sufficient signal of electric power and device startup, after circuit judges, sends a battery switch-over control signal to battery switching circuit, uses main battery or reserve battery with decision.
In the preferred embodiment of the utility model, it is a logic sum gate that its device starts decision circuitry.In addition, its battery selection circuit is a logical AND gate.
In sum, the utility model is the selection circuit with the main battery of electronic installation and reserve battery, designs in the mode of Digital Logical Circuits, uses the complicated designed circuit of analog form to replace in the past, therefore can reduce the complexity of this circuit, allow the mode of design oversimplify more.
State with other purpose, feature and advantage and can become apparent on the utility model for allowing, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 illustrates the circuit block diagram according to the selection circuit of the main battery of the utility model one preferred embodiment and reserve battery.
Fig. 2 illustrates the method flow diagram according to the selection circuit of the main battery of the utility model one preferred embodiment and reserve battery.
Embodiment
Please refer to Fig. 1, it illustrates is circuit block diagram according to the selection circuit of the utility model one preferred embodiment main battery and reserve battery.Show among the figure, this selects the voltage detecting circuit 10 of circuit to be connected to main battery, detect the electric power of this main battery, according to the whether sufficient situation of electric power, to send the sufficient signal of electric power and start decision circuitry 20 to device, this starts decision circuitry 20 is logic sum gate 50, also be coupled to switch of electronic device, detect the unlatching situation of this switch of electronic device, and according to the sufficient signal of electric power, output device starts judges signal; It is logical AND gate 60 that battery is selected circuit 30, receiving system starts judgement signal and the sufficient signal of electric power simultaneously, its received signal is judged, send the battery switch-over control signal at last, export battery switching circuit 40 to, this commutation circuit can be maked decision according to received signal, selects to use main battery or reserve battery.
In the utility model preferred embodiment, switch of electronic device can for example be the lid of the battery of electronic installation, but not as limit.
System of selection flow chart by the selection circuit that also can summarize a kind of main battery and reserve battery in the above-mentioned explanation.As shown in Figure 2, it illustrates the method flow diagram according to the selection circuit of the main battery of the utility model one preferred embodiment and reserve battery, its flow process is: at first in step S72, whether the electric power of detecting main battery is sufficient earlier, then whether the switch of detecting electronic installation is unlocked in step S74, at last in step S76, carry out interpretation according to the signal results that front two steps are detected, send one to output signal to battery switching circuit again, use which kind of battery with decision, if electric power abundance, in step S82, electronic installation will be selected to continue to use main battery, if power shortage, then in step S78, electronic installation will select to use reserve battery to supply electric power.
Please refer to table 1, the switch motion of the main battery of its record Fig. 1 and the selection circuit of reserve battery.
Table 1
| Switch of electronic device | The sufficient signal of electric power | Power source | |
| Script 1 | Electronic installation cuts out (logical one) | Logical one | Main battery |
| Script 2 | Electronic installation cuts out (logical one) | Logical zero | Reserve battery |
| Script 3 | Electronic installation is opened (logical zero) | Logical one | Main battery |
| Script 4 | Electronic installation is opened (logical zero) | Logical zero | Reserve battery |
As shown in Table 1, when the sufficient signal of electric power was logical one (that is main battery electric power for example is greater than 3.1 volts), electronic installation will be by the main battery power supply.And when when the sufficient signal of electric power is logical zero (that is main battery electric power for example is less than 3.1 volts), electronic installation will be by the reserve battery power supply.
In sum, the utility model is the selection circuit with the main battery of electronic installation and reserve battery, designs in the mode of Digital Logical Circuits, uses the complicated designed circuit of analog form to replace in the past, therefore can reduce the complexity of this circuit, allow the mode of design oversimplify more.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; anyly have the knack of this operator; in the spirit and scope that do not break away from the utility model; when can doing a little change and retouching, so the protection range of the utility model attached claims person of defining after looking is as the criterion.
Claims (4)
1. the selection circuit of main battery and reserve battery couples a main battery and a switch of electronic device, in order to control a battery switching circuit; It is characterized in that this selection circuit comprises:
Whether one voltage detecting circuit is coupled to this main battery, sufficient in order to detect this main battery electric power, and exports the sufficient signal of an electric power;
One device starts decision circuitry, is coupled to this switch of electronic device, and in order to receiving the sufficient signal of this electric power, and according to this switch of electronic device and the sufficient signal of this electric power, output one device starts judges signal; And
One battery is selected circuit, starts the judgement signal in order to receive the sufficient signal of this electric power and this device, after circuit judges, sends a battery switch-over control signal.
2. the selection circuit of main battery and reserve battery according to claim 1, it is characterized in that: it is a logic sum gate that this device starts decision circuitry.
3. the selection circuit of main battery and reserve battery according to claim 1, it is characterized in that: it is a logical AND gate that this battery is selected circuit.
4. the selection circuit of main battery and reserve battery according to claim 1, it is characterized in that: this battery switch-over control signal is for inputing to commutation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043860 CN2859893Y (en) | 2005-07-28 | 2005-07-28 | Selective circuit of main battery and emergency battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043860 CN2859893Y (en) | 2005-07-28 | 2005-07-28 | Selective circuit of main battery and emergency battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859893Y true CN2859893Y (en) | 2007-01-17 |
Family
ID=37612750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520043860 Expired - Fee Related CN2859893Y (en) | 2005-07-28 | 2005-07-28 | Selective circuit of main battery and emergency battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859893Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478176A (en) * | 2008-01-03 | 2009-07-08 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN102306483A (en) * | 2011-08-23 | 2012-01-04 | 常熟开关制造有限公司(原常熟开关厂） | Backlight control circuit of electronic display apparatus of breaker |
| CN107221977A (en) * | 2017-06-12 | 2017-09-29 | 汕头市毅和电源科技有限公司 | A kind of application process of iron lithium phosphate battery and its protection circuit plate |
-
2005
- 2005-07-28 CN CN 200520043860 patent/CN2859893Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478176A (en) * | 2008-01-03 | 2009-07-08 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN101478176B (en) * | 2008-01-03 | 2012-11-21 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN102306483A (en) * | 2011-08-23 | 2012-01-04 | 常熟开关制造有限公司(原常熟开关厂） | Backlight control circuit of electronic display apparatus of breaker |
| CN107221977A (en) * | 2017-06-12 | 2017-09-29 | 汕头市毅和电源科技有限公司 | A kind of application process of iron lithium phosphate battery and its protection circuit plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20130728 |