CN103078370B - Power module of automobile intelligent switch - Google Patents
Power module of automobile intelligent switch Download PDFInfo
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- CN103078370B CN103078370B CN201210585693.6A CN201210585693A CN103078370B CN 103078370 B CN103078370 B CN 103078370B CN 201210585693 A CN201210585693 A CN 201210585693A CN 103078370 B CN103078370 B CN 103078370B
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Abstract
The invention provides a power module of an automobile intelligent switch. The power module comprises three units, i.e. an input power supply, a voltage regulating part, an output control unit and an output detection unit. When no switching signal is input on a communication bus, the power supply enters a power saving mode; and when a switching signal is input on the communication bus, the power supply enters a working mode. Thus, the power control mode has the advantages of capabilities of reducing power consumption and saving cost, reliable performance and the like.
Description
Technical field
The present invention relates to field of power supplies, particularly a kind of automobile intelligent switch power module.
Background technology
Along with improving constantly of people's living standard, automobile receives much attention with the feature of himself, becomes indispensable trip instrument in people's life, the continuous increase of automobile electronics and upgrading, the more and more comfortable change of automotive electronics and hommization, wherein very important is power management.
Automotive electronics uses storage battery power supply, and the output of storage battery generates the 5V power supply meeting automobile microprocessor and use by DC-DC step-down, under control of the microprocessor, for other vehicle electronics provide power supply.
Automobile power source control circuit electricity saving performance is in the past poor, and as do not pressed when switch key, the power supply of its sample circuit is a direct power supply, virtually too increases the working temperature of product at the electricity of battery consumption simultaneously.And large-area fin must be adopted and the area and the cost that add PCB surface plate to solve heat dissipation problem.
Summary of the invention
The present invention is the deficiency solving the control of current automobile power source, provides a kind of power module of automobile intelligent switch.
The present invention is solved by following scheme: a kind of power module of automobile intelligent switch, comprise storage battery and power supply input circuit, the voltage that the output that described power supply input circuit connects storage battery produces needed for automotive electronics exports, and also comprises microprocessor, output control unit and output detections unit;
Load signal on described output detections unit inspection automobile bus exports and connects described microprocessor;
The output signal of the output detections unit described in described microprocessor receives produces control signal and connects described output control unit;
Described control unit receives the described power supply input circuit described in microprocessor-based control signal controlling.
Further, in the power module of above-mentioned automobile intelligent switch: described power supply input circuit comprises isolating diode D1, filter capacitor C1 and produces the DC_DC circuit of microprocessor required voltage;
The anode of described isolating diode D1 connects the positive pole of described storage battery, and the negative electrode of described isolating diode D1 is by described filter capacitor C1 ground connection; The negative electrode of described isolating diode D1 is the power supply output of storage battery;
The negative electrode of the isolating diode D1 described in input termination of described DC_DC circuit, the power input of the microprocessor described in output termination of described DC_DC circuit.
Further, in the power module of above-mentioned automobile intelligent switch: described DC_DC circuit comprises low-power voltage reduction module, voltage stabilizing didoe D2, filter capacitor C2, C3, C4, C5 and pressure regulation chip U1; Input DC power connects described low-power voltage reduction module;
Described voltage stabilizing didoe D2 be arranged on and low-power voltage reduction module output between;
The output end of pressure-stabilizing of described voltage stabilizing didoe D2 connects the input of described pressure regulation chip U1;
Described filter power supply C2 and C3 is arranged in parallel between the input of described pressure regulation chip U1 and ground; Described filter power supply C4 and C5 is arranged in parallel between the output of described pressure regulation chip U1 and ground.
Further, in the power module of above-mentioned automobile intelligent switch: described output control unit comprises triode Q2, partially value resistance R7, R8, R9, filter capacitor C8;
The collector electrode of described triode Q2 passes through the output of the input power described in inclined value resistance R7, R8 access of series winding;
The base stage of described triode Q2 connects described microprocessor-based control signal output part by described inclined value resistance R9; Between the base stage that described filter power supply C8 is connected to described triode Q2 and ground; The grounded emitter of described triode Q2.
Further, in the power module of above-mentioned automobile intelligent switch: described output detections unit comprises triode Q1, divider resistance R10, R11, R12, filter capacitor C7, C9;
The emitter of described triode Q1 connects the output of described input power;
The base stage of described triode Q1 connects the link of described inclined value resistance R7 and inclined value resistance R8;
Be provided with divider resistance R10 and filter capacitor C7 between the collector electrode of described triode Q1 and ground, divider resistance R11 and R12 is in parallel with described divider resistance R10 and filter capacitor C7 after contacting, and filter power supply C9 is in parallel with described divider resistance R11.
Further, in the power module of above-mentioned automobile intelligent switch: also comprise diode D4 in described output detections unit, the negative electrode of described diode D4 is connected with the collector and emitter of described triode Q1 respectively with anode.。
The present invention, owing to have employed output detections unit and output control unit, utilizes output detections unit inspection whether to have load under micro-processor control, if do not have load to control power supply by output control unit be in sleep state to save electric energy.
Below by specific embodiment contrast accompanying drawing, further description is carried out to technical scheme of the present invention.
Accompanying drawing illustrates:
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the embodiment of the present invention 1 input power circuit theory diagrams.
Fig. 3 is the embodiment of the present invention 1 output control circuit schematic diagram.
Embodiment:
The technical problem that the embodiment of the present invention will solve is to provide a kind of energy supply control module and provides reliable to be reached for in-vehicle electronic system, can control, low-power consumption and the power supply of cheapness, the invention provides above-mentioned energy supply control module in order to achieve the above object.
The scheme of this real embodiment is as shown in Figure 1, comprise the input circuit of storage battery, MCU, output control unit and output detections unit, storage battery by input power produce car electrics required various power supplys, wherein first-selected, after the pressure regulation of pressure regulation part, produce 5V direct current export to main control unit MCU, this is a DC_DC circuit, the 12V direct current that storage battery exports is converted to stable 5V direct current needed for MCU by it, and output control unit and output detections unit come to control the output of main control unit and input and monitor respectively.
As shown in Figure 2, power supply input circuit comprises isolating diode D1, filter capacitor C1 and produces the DC_DC circuit of microprocessor required voltage;
The anode of isolating diode D1 connects the positive pole of described storage battery, and the negative electrode of isolating diode D1 is by described filter capacitor C1 ground connection; The negative electrode of isolating diode D1 is the power supply output of storage battery;
The negative electrode of the isolating diode D1 described in input termination of DC_DC circuit, the power input of the microprocessor described in output termination of DC_DC circuit.
DC_DC circuit comprises low-power voltage reduction module, voltage stabilizing didoe D2, filter capacitor C2, C3, C4, C5 and pressure regulation chip U1; Input DC power connects described low-power voltage reduction module;
Voltage stabilizing didoe D2 be arranged on and low-power voltage reduction module output between;
The output end of pressure-stabilizing of voltage stabilizing didoe D2 connects the input of pressure regulation chip U1;
Described filter power supply C2 and C3 is arranged in parallel between the input of pressure regulation chip U1 and ground; Described filter power supply C4 and C5 is arranged in parallel between the output of pressure regulation chip U1 and ground.
In fig. 2, VBAT connects with the mains positive pole, by D1 diode, current-limiting resistance R1-R6 through 6 of pressure regulation part and together, again through voltage stabilizing didoe D2 by voltage clamp in the range of nominal tension of diode, then enter the input of pressure regulation chip U1 by filter capacitor C1, C2, it is 5.0V voltage that output exports VCC, is supplied to MCU and powers.
As shown in Figure 3, output control unit comprises triode Q2, partially value resistance R7, R8, R9, filter capacitor C8 for output control unit and output detections unit;
The collector electrode of triode Q2 passes through the output of the input power described in inclined value resistance R7, R8 access of series winding;
The base stage of triode Q2 connects described microprocessor-based control signal output part by described inclined value resistance R9; Between the base stage that described filter power supply C8 is connected to described triode Q2 and ground; The grounded emitter of triode Q2.
Output detections unit comprises triode Q1, divider resistance R10, R11, R12, filter capacitor C7, C9;
The emitter of triode Q1 connects the output of described input power;
The base stage of triode Q1 connects the link of described inclined value resistance R7 and inclined value resistance R8;
Be provided with divider resistance R10 and filter capacitor C7 between the collector electrode of triode Q1 and ground, divider resistance R11 and R12 is in parallel with described divider resistance R10 and filter capacitor C7 after contacting, and filter power supply C9 is in parallel with divider resistance R11.In addition, in output detections unit, also comprise diode D4, the negative electrode of diode D4 is connected with the collector and emitter of described triode Q1 respectively with anode.
Output control unit one end receives the output of main control unit MCU, receives input power by VBAT_D, realizes exporting the control of main control unit MCU controlling.
Output detections unit one end receives the input of main control unit MCU, receives input power by VBAT_D, realizes controlling the control inputs of main control unit MCU.
When being positioned at after communication bus key switch presses, after main control unit MCU detects switch input signal, open VABT_SW, now power supply will enter mode of operation, press down when being positioned at communication bus key switch always, then communication bus is sending data always, then this power supply can not enter sleep pattern: be switched to non-operating state when being positioned at communication bus key switch from operating state, after starting timing 4 second, power supply will enter sleep pattern, then this power supply will enter sleep state, i.e. energy-saving mode.
As shown in Figure 3, power supply output control unit mainly receives the emitter of Q1 (PNP triode) by VBAT_D, base stage receives the collector electrode of Q2 (NPN triode) through resistance, base stage receives the control port (VBAT_SW_OUT) of MCU through resistance, thus the output waveform of control VBAT_SW.Output detections unit carries out feedback monitoring for the impulse waveform of VBAT_SW, judges output waveform whether distortion.
After key switch is pressed (this switch is band communication bus), after MCU detects switch input signal, and open VABT_SW, certain VABT_LED power supply also can be opened, and the LED that now works can light.
When key switch presses down always, then communication bus is sending data always, then this power supply can not enter sleep pattern.
When key switch is switched to non-operating state from operating state, after starting timing 4 second, then this power supply will enter sleep pattern, namely reach power saving effect
Claims (2)
1. the power module of an automobile intelligent switch, comprise storage battery and power supply input circuit, the voltage that the output that described power supply input circuit connects storage battery produces needed for automotive electronics exports, and it is characterized in that: also comprise microprocessor, output control unit and output detections unit;
Load signal on described output detections unit inspection automobile bus exports and connects described microprocessor;
The output signal of the output detections unit described in described microprocessor receives produces control signal and connects described output control unit;
Described control unit receives the described power supply input circuit described in microprocessor-based control signal controlling;
Described power supply input circuit comprises isolating diode D1, filter capacitor C1 and produces the DC_DC circuit of microprocessor required voltage;
The anode of described isolating diode D1 connects the positive pole of described storage battery, and the negative electrode of described isolating diode D1 is by described filter capacitor C1 ground connection; The negative electrode of described isolating diode D1 is the power supply output of storage battery;
The negative electrode of the isolating diode D1 described in input termination of described DC_DC circuit, the power input of the microprocessor described in output termination of described DC_DC circuit;
Described DC_DC circuit comprises low-power voltage reduction module, voltage stabilizing didoe D2, filter capacitor C2, C3, C4, C5 and pressure regulation chip U1; Input DC power connects described low-power voltage reduction module;
Described voltage stabilizing didoe D2 be arranged on and low-power voltage reduction module output between;
The output end of pressure-stabilizing of described voltage stabilizing didoe D2 connects the input of described pressure regulation chip U1;
Described filter power supply C2 and C3 is arranged in parallel between the input of described pressure regulation chip U1 and ground; Described filter power supply C4 and C5 is arranged in parallel between the output of described pressure regulation chip U1 and ground;
Described output control unit comprises triode Q2, partially value resistance R7, R8, R9, filter capacitor C8;
The collector electrode of described triode Q2 passes through the output of the input power described in inclined value resistance R7, R8 access of series winding;
The base stage of described triode Q2 connects described microprocessor-based control signal output part by described inclined value resistance R9; Between the base stage that described filter power supply C8 is connected to described triode Q2 and ground; The grounded emitter of described triode Q2;
Described output detections unit comprises triode Q1, divider resistance R10, R11, R12, filter capacitor C7, C9;
The emitter of described triode Q1 connects the output of described input power;
The base stage of described triode Q1 connects the link of described inclined value resistance R7 and inclined value resistance R8;
Be provided with divider resistance R10 and filter capacitor C7 between the collector electrode of described triode Q1 and ground, divider resistance R11 and R12 is in parallel with described divider resistance R10 and filter capacitor C7 after contacting, and filter power supply C9 is in parallel with described divider resistance R11.
2. the power module of automobile intelligent switch according to claim 1, it is characterized in that: in described output detections unit, also comprise diode D4, the negative electrode of described diode D4 is connected with the collector and emitter of described triode Q1 respectively with anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585693.6A CN103078370B (en) | 2012-12-28 | 2012-12-28 | Power module of automobile intelligent switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585693.6A CN103078370B (en) | 2012-12-28 | 2012-12-28 | Power module of automobile intelligent switch |
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| CN103078370A CN103078370A (en) | 2013-05-01 |
| CN103078370B true CN103078370B (en) | 2015-05-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375567A (en) * | 2015-11-16 | 2016-03-02 | 深圳还是威健康科技有限公司 | Power quantity measuring circuit and terminal |
| US10079594B2 (en) * | 2016-10-03 | 2018-09-18 | Infineon Technologies Ag | Current reduction for activated load |
| CN108649663B (en) * | 2018-07-04 | 2024-05-17 | 深圳市道通智能航空技术股份有限公司 | Voltage-limiting power supply circuit and electronic equipment |
Citations (3)
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| CN102064534A (en) * | 2010-11-16 | 2011-05-18 | 佛山市顺德区瑞德电子实业有限公司 | Novel energy-saving control circuit |
| CN202394068U (en) * | 2011-11-10 | 2012-08-22 | 美的集团有限公司 | Power supply control circuit for reducing standby power consumption of induction cooker |
| CN203104012U (en) * | 2012-12-28 | 2013-07-31 | 昌辉汽车电气系统（安徽）有限公司 | Intelligent switch on/off power supply module for automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294295B2 (en) * | 2010-05-24 | 2012-10-23 | Xiamen Lanxi Technology Co., Ltd. | Power supply method with parallel-connected batteries |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064534A (en) * | 2010-11-16 | 2011-05-18 | 佛山市顺德区瑞德电子实业有限公司 | Novel energy-saving control circuit |
| CN202394068U (en) * | 2011-11-10 | 2012-08-22 | 美的集团有限公司 | Power supply control circuit for reducing standby power consumption of induction cooker |
| CN203104012U (en) * | 2012-12-28 | 2013-07-31 | 昌辉汽车电气系统（安徽）有限公司 | Intelligent switch on/off power supply module for automobile |
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Denomination of invention: Power module of automobile intelligent switch Effective date of registration: 20171211 Granted publication date: 20150520 Pledgee: Huizhou Merchants Bank, Wuhu solidarity Road subbranch Pledgor: CHANGHUI AUTO ELECTRICAL SYSTEM (ANHUI) Co.,Ltd. Registration number: 2017340000392 |
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Date of cancellation: 20221108 Granted publication date: 20150520 Pledgee: Huizhou Merchants Bank, Wuhu solidarity Road subbranch Pledgor: CHANGHUI AUTO ELECTRICAL SYSTEM (ANHUI) Co.,Ltd. Registration number: 2017340000392 |
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