CN2583854Y - Protective circuit of intelligent electronic device - Google Patents
Protective circuit of intelligent electronic device Download PDFInfo
- Publication number
- CN2583854Y CN2583854Y CN 02282255 CN02282255U CN2583854Y CN 2583854 Y CN2583854 Y CN 2583854Y CN 02282255 CN02282255 CN 02282255 CN 02282255 U CN02282255 U CN 02282255U CN 2583854 Y CN2583854 Y CN 2583854Y
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- Prior art keywords
- circuit
- switch
- battery
- control circuit
- external power
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Abstract
The utility model relates to a protective circuit of an intelligent electronic device which is connected between a switch and at least one electronic device and is used for protecting the electronic devices when the switch is switched. The utility model comprises a control circuit which is respectively connected with the switch and the electronic devices, and the switch is connected with an outer power supply. A detecting circuit is respectively connected with the switch and the control circuit, and the outer power supply can supply electric power which the electronic devices need to make the electronic devices work. Simultaneously the detecting circuit can detect the switching state of the switch, and a cell is connected with the control circuit. When the protective circuit is not expected to open, the detecting circuit detects short circuit signals at the moment that the switch is switched, the short circuit signal is transmitted to the control circuit, and the control circuit cuts off the electronic devices at first, is connected with the outer power supply and passes through the electric power of the cell again. After the electronic devices are opened one by one, the outer power supply is connected with the electronic devices.
Description
Technical field
The utility model relates to the control circuit of electronic installation, especially a kind of protective circuit of intelligent electronic installation.
Background technology
In recent years, because the order of electronic industry and material science benefit is progressive, various electronic product is along with novel electron part and manufacturing technology succeeds in developing, not only significantly reduced the manufacturing cost of electronic product, the function and the quality of electronic product have effectively been improved, more because of the continuous progress of semiconductor fabrication, make the semiconductor element of various miniaturization, replaced the conditional electronic element, make various electronic product be able to stride forward, and significantly promoted convenience and the popularization that various electronic product sampan is used towards compact market trend and big step of demand.
Only; electronic installation is directly to be connected with external power (as: indoor socket) now; its switch does not have protective device; order is when start that the user does not expect; this external power will enter the electronic circuit of this electronic installation inside fast by the immediate current surging of this switch, and this electronic circuit of heavy damage; cause the damage of this electronic installation, and it is undesired to work.
Summary of the invention
In view of this, be the shortcoming that improvement is commonly used, the creator is through the permanent research and experiment of making great efforts, and development and Design goes out the protective circuit of a kind of intelligent electronic installation of the present utility model finally.
The purpose of this utility model is the protection electronic installation, avoids directly damaging these electronic installations because of the electric current surging that start is suddenly produced.
For reaching above-mentioned purpose, the utility model proposes a kind of protective circuit of intelligent electronic installation, be connected between a switch and at least one electronic installation, be used for when this switch switches, protecting these electronic installations, it comprises: a control circuit, be connected with this switch, these electronic installations respectively, this switch also is connected with an external power; One circuit for detecting is connected with this switch, this control circuit respectively, makes this external power can supply these electronic installations required electric power, makes these electronic installation starts, and this circuit for detecting can be detected the switching state of this switch simultaneously; One battery is connected with this control circuit; When this protective circuit do not expect by when start; this circuit for detecting detects the instantaneous short circuit signal that this switch is switched; and this short-circuit signal is sent to this control circuit; these control circuit elder generation these electronic installations of cut-out are connected with this external power; pass through the electric power of this battery again; after these electronic installations are started shooting one by one, this external power is controlled to being connected again with these electronic installations.
And when the user do not expect with the shutdown of this protective circuit the time; this circuit for detecting can detect this switch open circuit signaling of pent moment; and this open circuit signaling is sent to this control circuit; make this control circuit cut off being connected of these electronic installations and this external power earlier; the electric power of this battery of mat again; after these electronic installations are shut down one by one, this external power is controlled to being connected again with these electronic installations.
When the beneficial effects of the utility model are the start having avoided not expecting, shutdown, may be to the damage that electronic installation caused, thus protected these electronic installations.
Description of drawings
Fig. 1 is a block schematic diagram of the present utility model;
Fig. 2 is the circuit diagram of circuit for detecting of the present utility model;
Fig. 3 is the circuit diagram of battery charger of the present utility model;
Fig. 4 is one of control circuit of the present utility model circuit diagram;
Fig. 5 is two circuit diagrams of control circuit of the present utility model;
Fig. 6 is the three-circuit figure of control circuit of the present utility model;
Fig. 7 is the square circuit diagram of an embodiment of the present utility model.
Embodiment
The utility model is a kind of protective circuit of intelligent electronic installation; see also shown in Figure 1; mainly be to be provided with a protective circuit 1; this protective circuit 1 is connected between a switch 13 and the electronic installation 17; be used for this flirtatious sub-device 14 of protection when this switch 13 switches; this protective circuit 1 is provided with a control circuit 11; one circuit for detecting 15 and a battery 16; wherein; this control circuit 11 respectively with a switch 13; this circuit for detecting 15; this battery 16 and this electronic installation 17 are connected; this switch 13 also is connected with an external power 18; and this circuit for detecting 15 is connected with this switch 13; make this external power 18 can supply these electronic installations 17 required electric power; make these electronic installation 17 starts, this circuit for detecting 15 can be detected the switching state of this switch 13 simultaneously.
The composition of the above-mentioned member of nationality; when the user do not expect with 1 start of this protective circuit the time; this circuit for detecting 15 can detect the instantaneous short circuit signal that this switch 13 is switched; and this short-circuit signal is sent to this control circuit 11; make this control circuit 11 cut off being connected of these electronic installations 17 and this external power 18 earlier; the electric power of this battery 16 of mat again after this electronic installation 17 started shooting one by one, is controlled this external power 18 to being connected with these electronic installations 17 again.
When the user do not expect with 1 shutdown of this protective circuit the time; this circuit for detecting 15 can detect the moment open circuit signaling that this switch 13 is switched; and this open circuit signaling is sent to this control circuit 11; make this control circuit 11 cut off being connected of these electronic installations 17 and this external power 18 earlier; the electric power of this battery 16 of mat again; after these electronic installations 17 are shut down one by one, this external power 18 is controlled to being connected again with these electronic installations 17.
In the utility model, see also Fig. 1, shown in 3, this battery 16 can be a rechargeable battery, when this control circuit 11 detects the electric weight deficiency of this battery 16, this this external power 18 of control circuit 11 may command be connected with a battery charger 12 of this control circuit 11 (as shown in Figure 3), make this external power 18 these battery charger 12 electric power of supply, make 12 pairs of these batteries 16 of this battery charger charge, again, the electric weight that detects this battery 16 when this control circuit 11 fills when full, this control circuit 11 can cut off being connected of this external power 18 and this battery charger 12, makes this battery 16 stop charging.
In the utility model, see also shown in Figure 1ly again, this battery 16 also can be a lithium battery.
In the utility model, see also shown in Figure 1ly again, this circuit for detecting 15 is provided with a manual switch (not shown), and changeable this hand switch of user is an off state, makes this circuit for detecting 15 stop detecting to this switch 13.
In the most preferred embodiment of the present utility model, shown in Fig. 1,2, be control circuit figure of the present utility model, but it mainly is provided with the program control wafer MP that specifications and models are EM78P458/9,9 pin of this wafer MP are connected in this switch 13, see also Fig. 6, be another control circuit figure of the present utility model, wherein contact 61 is connected with this switch 13, contact 62 is connected with this battery 16, contact 63 is connected with these electronic installations 17 for output, so this battery 16 is connected in parallel with this switch 13.
When 9 pin detect the instantaneous short circuit signal that this switch 13 is switched, this wafer MP inside was with timing 5 seconds, and then detect this switch 13, if still detect short-circuit signal, then it goes out off signal to these electronic installations 17 by 2 human hair combing wastes, this moment is because this battery 16 is to be connected in parallel with this switch 13, make this switch 13 be switched suddenly when opening circuit, can supply electric power to these electronic installations 17 by this battery 16 naturally, make these electronic installations 17 can utilize this electric power to shut down, and after finishing shutdown, send a signal to 8 pin of this wafer MP, the 1 pin starting switch 31 (as shown in Figure 3) that makes this wafer MP is open circuit, cuts off being connected of this battery 16 and these electronic installations 17.
When 9 pin detect that this switch 13 is switched moment during path signal, this wafer MP inside was with timing 5 seconds, and then detect this switch 13, if still detect short-circuit signal, then go out starting-up signal to these electronic installations 17 by its 2 human hair combing waste, order is supplied electric power to these electronic installations 17 by this battery 16, make these electronic installations 17 can utilize this electric power to start shooting, and after finishing start, send a signal to 8 pin of this wafer MP, make the pin of this wafer MP start this switch 31 (as shown in Figure 3), external power 18 is connected with these electronic installations 17 for closed circuit.
In this embodiment, please see Figure shown in 3, it is the circuit diagram of battery charger 12 of the present utility model, wherein contact 32 is connected with switch 13, and contact 33 is connected with 9 pin of wafer MP, and 34 of contacts are connected with battery 16 (rechargeable battery), the voltage of 9 pin detecting battery 16, when being lower than operating voltage as if the voltage that detects battery 16, its 2 pin starting switch 35 is closed circuit, and external power 18 is charged via 13 pairs of these batteries 16 of this switch.When 9 pin detected these battery 16 full chargings, when promptly the voltage of this battery 16 was higher than operating voltage, this 2 pin starting switch 35 was for opening circuit, to stop charging.
In this embodiment, see also shown in Figure 3 again, this battery charger 12 is provided with a step-down control circuit, by specifications and models is the start that the DC-CHIP-1 wafer of P2K22010C is controlled this step-down, make external power 18 be depressurized to chargeable voltage, when 4 pin detect external power 18 when being higher than charging voltage, 8 pin are closed circuit with diverter switch 36, make the voltage segment branch be depressed into electric capacity 37, make the voltage of external power 18 reduce to charging voltage.
In this embodiment, see also shown in Figure 4 again, be step-down control circuit figure of the present utility model, by specifications and models is the start that the DC-CHIP-2 wafer of P2K22010C is controlled this step-down, wherein contact 41 is connected with this switch 13, contact 42 is connected with these electronic installations 17 for output, because the operating voltage difference (as: 12V of each electronic installation 17,5V...), these contact 42 supplies are a kind of electronic installation 17 of operating voltage wherein, when 4 pin detect external power 18 via switch 13 input when being higher than operating voltage, 8 pin are closed circuit with diverter switch 43, make the voltage segment branch be depressed into electric capacity 44, and the voltage step-down that makes external power 18 is to operating voltage.
In this embodiment, see also shown in Figure 4 again, be step-down control circuit figure of the present utility model, by specifications and models is the start that the DC-CHIP-3 wafer of P2K22010C is controlled this step-down, be another group step-down control circuit, wherein contact 45 is connected with this switch 13, contact 46 is connected with these electronic installations 17 for output, because the operating voltage difference (as: 12V of each electronic installation 17,5V...), this contact 46 is for supplying wherein a kind of electronic installation 17 of operating voltage, when 4 pin detect external power 18 via switch 13 input when being higher than operating voltage, 8 pin are closed circuit with diverter switch 47, make the voltage segment branch be depressed into electric capacity 48, the voltage step-down that makes external power 18 is to operating voltage.
In this embodiment, see also shown in Figure 5 again, be step-down control circuit figure of the present utility model, by specifications and models is the start that the DC-CHIP-4 wafer of P2K22010C is controlled this step-down, be another group step-down control circuit, wherein contact 51 is connected with this switch 13, contact 52 is connected with these electronic installations 17 for output, because the operating voltage difference (as: 12V of each electronic installation 17,5V...), this contact 52 is for supplying wherein a kind of electronic installation 17 of operating voltage, when 4 pin detect external power 18 via switch 13 input when being higher than operating voltage, 8 pin are closed circuit with diverter switch 53, make the voltage segment branch be depressed into electric capacity 54, the voltage step-down that makes external power 18 is to operating voltage.
In this embodiment, see also shown in Figure 6 again, this another control circuit also comprises a step-down control circuit figure, by specifications and models is the start that the DC-CHIP-5 wafer of P2K22010C is controlled this step-down, when 4 pin detect battery 16 or external power 18 when being higher than operating voltage, 6,7 pin are closed circuit with diverter switch 64, make the voltage segment branch be depressed into electric capacity 65, make the operating voltage of the voltage step-down of external power 18 or battery 16 power supplies to electronic installation 17.
So; the utility model can be protected these electronic installations 17; avoid because of suddenly by the electric current surging that produced of start; directly damage these electronic installations 17; also protect simultaneously these electronic installations 17; avoiding the undesired start by the user, and cause the damage of these electronic installations 17, is splendid creation.
Employed in this embodiment main element specifications and models, title and numbering:
Specifications and models title numbering supplier
But EM78P458/9 program control wafer MP EMC
DC-CHIP-1 PWM
DC-CHIP-2 PWM
DC-CHIP-3 PWM
DC-CHIP-4 PWM
DC-CHIP-5 PWM
In the utility model; this protective circuit can cooperate and is installed in automobile; yacht; on sound equipment or other electronic product; in another most preferred embodiment of the present utility model for being applied on the automobile; see also shown in Figure 7; this protective circuit 2 is provided with a control circuit 21; one circuit for detecting 25 and a battery 26; wherein; this control circuit 21 respectively with a switch 23; this circuit for detecting 25; this battery 26 and at least one device for vehicular electronic 27 (as: portable computers; the automobile mobile phone; automobile VCD... etc.) be connected; this automobile switch 23 also is connected with an automobile power source 28 (battery of automobile and generator); and this circuit for detecting 25 is connected with this automobile switch 23; when opening automobile electric switch that the user does not expect; this circuit for detecting 25 can detect the instantaneous short circuit signal that this automobile switch 23 is unlocked; and this short-circuit signal is sent to this control circuit 21; make this control circuit 21 cut off being connected of these device for vehicular electronic 27 and this automobile power source 28 earlier; the electric power of this battery 26 of mat again; after these device for vehicular electronic 27 are started shooting one by one, this automobile power source 28 is controlled to being connected again with these device for vehicular electronic 27.
In addition, the user do not expect with automobile flameout the time, this circuit for detecting 25 can detect the moment open circuit signaling that this vapour switch 23 is switched, and this open circuit signaling is sent to this control circuit 21, make this control circuit 21 cut off being connected of these device for vehicular electronic 27 and this automobile power source 28 earlier, the electric power of this battery 26 of mat again after these device for vehicular electronic 27 are shut down one by one, is controlled this automobile power source 28 to being connected with these device for vehicular electronic 27 again.
In this embodiment, see also Fig. 3 again, shown in 7, this battery 26 can be a rechargeable battery, when this control circuit 21 detects the electric weight deficiency of this battery 26, this this automobile power source 28 of control circuit 21 may command is connected with a battery charger 12 (as shown in Figure 3) of this control circuit 21, make this automobile power source 28 these battery charger 12 electric power of supply, make 12 pairs of these batteries of battery charger charge, again, the electric weight that detects this battery 26 when this control circuit 21 fills when full, this control circuit 21 can cut off being connected of this automobile power source 28 and this battery charger 12, makes this battery 26 stop charging.
In this embodiment, see also shown in Figure 7ly again, this battery 26 also can be a lithium battery.
In this embodiment, consult shown in Figure 7ly again, this control circuit 21 can be the automobile computer on this automobile.
In this embodiment, consult shown in Figure 7ly again, this circuit for detecting 25 is provided with a manual switch, and changeable this hand switch of user is an off state, makes this circuit for detecting 25 stop detecting to this automobile switch 23.
So; the utility model can be protected these device for vehicular electronic 27; avoid because of suddenly by the electric current surging that produced of start; directly damage these device for vehicular electronic 27; also protect simultaneously these device for vehicular electronic 27; avoiding the undesired start by the user, and cause the damage of these device for vehicular electronic 27, is splendid creation.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those who are familiar with this art; 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 is as the criterion when the scope that look claim.
Claims (4)
1. the protective circuit of an intelligent electronic installation is connected between a switch and at least one electronic installation, is used for protecting these electronic installations when this switch switches, and it is characterized in that: comprising:
One control circuit is connected with this switch, these electronic installations respectively, and this switch also is connected with an external power;
One circuit for detecting is connected with this switch, this control circuit respectively, makes this external power can supply these electronic installations required electric power, makes these electronic installation starts, and this circuit for detecting can be detected the switching state of this switch simultaneously;
One battery is connected with this control circuit;
When this protective circuit do not expect by when start; this circuit for detecting detects the instantaneous short circuit signal that this switch is switched; and this short-circuit signal is sent to this control circuit; these control circuit elder generation these electronic installations of cut-out are connected with this external power; pass through the electric power of this battery again; after these electronic installations are started shooting one by one, this external power is controlled to being connected again with these electronic installations.
2. the protective circuit of intelligent electronic installation as claimed in claim 1; it is characterized in that: this battery is a rechargeable battery; when this control circuit detects the electric weight deficiency of this battery; this this external power of control circuit may command is connected with a battery charger of this control circuit; make this external power supply this battery charger electric power; make this battery charger that this battery is charged; again; the electric weight that detects this battery when this control circuit fills when full; this control circuit can cut off being connected of this external power and this battery charger, makes this battery stop charging.
3. the protective circuit of intelligent electronic installation as claimed in claim 1, it is characterized in that: this circuit for detecting is provided with one can be with the hand switch of this circuit for detecting manual switchover to off state.
4. the protective circuit of intelligent electronic installation as claimed in claim 1, it is characterized in that: this battery is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282255 CN2583854Y (en) | 2002-10-15 | 2002-10-15 | Protective circuit of intelligent electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282255 CN2583854Y (en) | 2002-10-15 | 2002-10-15 | Protective circuit of intelligent electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2583854Y true CN2583854Y (en) | 2003-10-29 |
Family
ID=33744379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02282255 Expired - Fee Related CN2583854Y (en) | 2002-10-15 | 2002-10-15 | Protective circuit of intelligent electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2583854Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594162A (en) * | 2011-01-13 | 2012-07-18 | 华硕电脑股份有限公司 | Power supply device and power supply control method thereof |
| CN101826795B (en) * | 2009-03-02 | 2013-06-19 | 华硕电脑股份有限公司 | Power conversion device and method |
| CN109283992A (en) * | 2017-07-21 | 2019-01-29 | 华为终端（东莞）有限公司 | A kind of bidirectional power supply protection circuit |
-
2002
- 2002-10-15 CN CN 02282255 patent/CN2583854Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826795B (en) * | 2009-03-02 | 2013-06-19 | 华硕电脑股份有限公司 | Power conversion device and method |
| CN102594162A (en) * | 2011-01-13 | 2012-07-18 | 华硕电脑股份有限公司 | Power supply device and power supply control method thereof |
| CN109283992A (en) * | 2017-07-21 | 2019-01-29 | 华为终端（东莞）有限公司 | A kind of bidirectional power supply protection circuit |
| CN109283992B (en) * | 2017-07-21 | 2020-09-29 | 华为终端有限公司 | Bidirectional power supply protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |