CN202737535U - Energy-saving power supply control circuit - Google Patents
Energy-saving power supply control circuit Download PDFInfo
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- CN202737535U CN202737535U CN2012204282802U CN201220428280U CN202737535U CN 202737535 U CN202737535 U CN 202737535U CN 2012204282802 U CN2012204282802 U CN 2012204282802U CN 201220428280 U CN201220428280 U CN 201220428280U CN 202737535 U CN202737535 U CN 202737535U
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- power supply
- circuit
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- power
- output circuit
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Abstract
The utility model relates to an energy-saving power supply control circuit of a direct current electric tool, and belongs to the technical field of an electric tool. The circuit comprises a power supply terminal, a starting pulse signal input circuit, a power supply output circuit with a switch member, and a micro-processing control chip. The starting pulse signal input circuit is connected with a detection signal input port of the micro-processing control chip. A control output port of the micro-processing control chip is connected with a maintenance conduction controlled terminal of the switch member of the power supply output circuit. The starting pulse signal input circuit is also connected with the controlled terminal of the switch member of the power supply output circuit. The power supply terminal passes through the switch member of the power supply output circuit and a voltage stabilization device to be connected with a power supply port of the micro-processing control chip. According to the above structure, if no starting pulse signals are input, the switch member of the power supply circuit is cut off, so that no power needs to be output to the electric tool, power supplied to the voltage stabilization device and the micro-processing control chip is cut off, and then almost zero power consumption is realized.
Description
Technical field
The utility model relates to a kind of power-supplying circuit of electric tool, and especially a kind of energy-conservation power-supplying circuit of direct current electric power tools belongs to the electric tool technical field.
Background technology
Understand according to the applicant, the power brick power-supplying circuit of existing electric tool mainly carries out Push And Release with the master switch device, and this switching device can directly lead to large electric current, normally switch open energising, and switch cuts out outage.But also have some not have the electric tool of master switch normally to control switch and the pass of power supply by signaling switch or signal transmission device spare, circuit part comprise voltage-stabilized power supply circuit, button control resistance or voltage starting signal input circuit, have the power supply output circuit of switching device and little processing controls chip.The power supply port of the little processing controls chip of output termination of voltage-stabilized power supply circuit, the enabling signal input circuit connects the detection signal input port of little processing controls chip, and the control output end mouth of little processing controls chip connects the switching device controlled end of power supply output circuit.Because little processing controls chip is provided with the dormancy program, therefore when detection signal input port no signal changes, will enter resting state, close the power supply output circuit.For example shown in Figure 1, battery B+ outputs to VCC port 3 pin of MCU chip U1 through voltage-stabilizing device U2, rotating voltage signal VR1-OUT, the VR2-OUT of electric tool button control connects respectively detection signal input port 15 corresponding to MCU chip, 16 pin, and control output end mouth 13 pin of MCU chip meet the controlled end+4.4V of switching device Q7 in the power supply output circuit.As VR1-OUT, when VR2-OUT does not have signal intensity, MCU enters resting state, and 13 pin are output not, and the power supply output circuit cuts out Q6 under the control of Q7, so this circuit turn-offs the power end of B+ to the output channel of MOS+.Yet even in this case, still there is certain power consumption in whole circuit, such as U2, MCU itself etc.Therefore, put for a long time, power brick still can lose efficacy because slowly discharging.
Summary of the invention
The purpose of this utility model is: for the problem that above-mentioned prior art exists, improve by circuit structure, propose a kind of energy-conservation power-supplying circuit that can make the almost nil power consumption of resting state, thereby make power brick can substantially keep storing all the time electric weight.
In order to reach above purpose, energy-conservation power-supplying circuit of the present utility model comprises power end, starting impulse signal input circuit, has the power supply output circuit of switching device, and little processing controls chip; Described starting impulse signal input circuit connects the detection signal input port of little processing controls chip, the control output end mouth of described little processing controls chip connects the maintenance conducting controlled end of power supply switching output circuit device, described starting impulse signal input circuit also connects the controlled end of described power supply switching output circuit device, described power end connects the power supply port of little processing controls chip behind power supply switching output circuit device and voltage-stabilizing device.
Like this, when being not activated pulse signal when input, the switching device of power supply circuits is turned off, and the therefore not only power supply of undirected electric tool output has also been closed the power supply of voltage-stabilizing device, little processing controls chip simultaneously, thereby realized almost zero-power.And when the input of starting impulse signal was arranged, the switching device of power supply circuits was opened, and voltage-stabilizing device is to little processing controls chip power supply, and therefore little processing controls chip output power supply inhibit signal can continue the power supply to electric tool.
Of the present utility model being embodied as: the switching device of described power supply output circuit is field effect transistor, the controlled end of described field effect transistor is when connecing starting impulse signal input circuit AC end, also by the triode ground connection as maintenance conducting control device, the base stage of described triode connects the control output end mouth pin of described little processing controls chip as keeping the conducting controlled end.
Of the present utility modelly further be embodied as: described power end connects the power supply port of described little processing controls chip after the field effect transistor and voltage stabilizing chip of described power supply output circuit.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the circuit theory diagrams of prior art.
Fig. 2 is the circuit theory diagrams of an embodiment of the utility model.
Embodiment
Embodiment one
Present embodiment is a kind of energy-conservation power-supplying circuit of electric drill, circuit theory diagrams as shown in Figure 2, comprise power end B+, button VR1, VR2 control rotating starting impulse signal input circuit, have the power supply output circuit of switching device field effect transistor Q3 and little processing controls chip U3(MC9RS08KA4CWJ).The VR1-OUT of starting impulse signal input circuit, VR2-OUT connect respectively little processing controls chip U3 corresponding detection signal input port 15,16 pin.The controlled end of power supply switching output circuit device field effect transistor Q3 is when connecing starting impulse signal input circuit AC end, also by the triode Q6 ground connection as maintenance conducting control device, the base stage of this triode connects control output end mouth 13 pin of little processing controls chip as keeping the conducting controlled end.Power end B+ connects power supply port 3 pin of little processing controls chip U3 behind the power supply field effect transistor Q3 of output circuit and voltage stabilizing chip U2 device (TLV70450).For fear of reverse voltage, between the AC of starting impulse signal input circuit end and VR1, be provided with isolating diode.
During operation, when one of pressing the button (as pressing VR1), then field effect transistor Q3 will open conducting, this moment, power end B+ directly powered to U3 by Q3 and through U2, U3 is activated, and simultaneously 13 pin of U3 output square wave is to Q6, thereby maintenance Q3 continues conducting, form an in stable condition power supply output circuit, its MOS+ end can continue battery power to export to the electric drill motor.
When the starting impulse signal input circuit is not inputted, not conducting of Q3 not only without the power supply output of electric tool, has also been closed the power supply of voltage stabilizing chip U2, little processing controls chip U3 simultaneously, the power consumption of whole system is almost 0, thereby efficiently solves the problem that the long storage time power brick lost efficacy.
Above-described embodiment is nonrestrictive, and switching device, voltage-stabilizing device and little processing controls chip all can adopt other equivalent models.
Claims (3)
1. energy-conservation power-supplying circuit comprises power end, starting impulse signal input circuit, has the power supply output circuit of switching device, and little processing controls chip; It is characterized in that: described starting impulse signal input circuit connects the detection signal input port of little processing controls chip, the control output end mouth of described little processing controls chip connects the maintenance conducting controlled end of power supply switching output circuit device, described starting impulse signal input circuit also connects the controlled end of described power supply switching output circuit device, described power end connects the power supply port of little processing controls chip behind power supply switching output circuit device and voltage-stabilizing device.
2. energy-conservation power-supplying circuit according to claim 1, it is characterized in that: the switching device of described power supply output circuit is field effect transistor, the controlled end of described field effect transistor is when connecing starting impulse signal input circuit AC end, also by the triode ground connection as maintenance conducting control device, the base stage of described triode connects the control output end mouth pin of described little processing controls chip as keeping the conducting controlled end.
3. energy-conservation power-supplying circuit according to claim 2, it is characterized in that: described power end connects the power supply port of described little processing controls chip after the field effect transistor and voltage stabilizing chip of described power supply output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204282802U CN202737535U (en) | 2012-08-28 | 2012-08-28 | Energy-saving power supply control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204282802U CN202737535U (en) | 2012-08-28 | 2012-08-28 | Energy-saving power supply control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737535U true CN202737535U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204282802U Expired - Lifetime CN202737535U (en) | 2012-08-28 | 2012-08-28 | Energy-saving power supply control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532185A (en) * | 2013-09-26 | 2014-01-22 | 胡根齐 | Battery pack with pulse starting circuit |
| CN108574318A (en) * | 2017-03-13 | 2018-09-25 | 艾普凌科有限公司 | Charge-discharge control circuit and cell apparatus |
-
2012
- 2012-08-28 CN CN2012204282802U patent/CN202737535U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532185A (en) * | 2013-09-26 | 2014-01-22 | 胡根齐 | Battery pack with pulse starting circuit |
| CN108574318A (en) * | 2017-03-13 | 2018-09-25 | 艾普凌科有限公司 | Charge-discharge control circuit and cell apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |