CN103151923B - A kind of stable-pressure device - Google Patents
A kind of stable-pressure device Download PDFInfo
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Abstract
This application provides a kind of stable-pressure device, one end is connected with vehicle power, and its other end is connected with multiple load, and device comprises counnter attack unit, control unit and voltage regulation unit; Counnter attack unit is used for preventing electric current from flowing to positive pole side from load negative pole side, and its input is connected with vehicle power, and output is connected with load; Voltage regulation unit is used for the voltage signal of the change received from vehicle power to be converted into stable voltage signal, and its input is connected with vehicle power, and output is connected with load; The input of control unit is connected with vehicle power, and output is connected with counnter attack unit, voltage regulation unit respectively, and control unit is for controlling the startup sequential of counnter attack unit and voltage regulation unit.Compared with adopting the mode of boosting battery, the stable-pressure device of the application can carry out voltage stabilizing to multiple power consumption equipment simultaneously, and do not need to increase extra boosting battery for each power consumption equipment, therefore greatly reduce vehicle-mounted electricity consumption equipment volume, save the usage space of vehicle.
Description
Technical field
The present invention relates to voltage stabilizing technique field, relate to a kind of stable-pressure device in particular.
Background technology
In the vehicle adopting start stop system, starting or stoping of engine can cause the temporary of on-vehicle battery voltage to fall, and existing vehicle audio, navigation system fall the performance having sensitivity to cell voltage.Fall impact on system to reduce cell voltage, responsive power consumption equipment usually needs the guard method that design is expensive separately, stops working in voltage-stabilizing system in existing starting, usually adopts the method for boosting battery to solve because main battery voltage falls problem.And the volume adopting the method for boosting battery to cause power consumption equipment increases, thus constrain the increase of power consumption equipment.
Summary of the invention
In view of this, in order to the problem that the volume solving the power consumption equipment adopting boosting battery method to cause increases, the object of the embodiment of the present invention is to provide a kind of stable-pressure device one end to be connected with vehicle power, its other end is connected with multiple load, and described device comprises counnter attack unit, control unit and voltage regulation unit;
Wherein, described counnter attack unit is used for preventing electric current from flowing to positive pole side from described load negative pole side, and its input is connected with described vehicle power, and output is connected with described load;
Described voltage regulation unit is used for the voltage signal of the change received from described vehicle power to be converted into stable voltage signal, and its input is connected with described vehicle power, and output is connected with described load;
The input of described control unit is connected with described vehicle power, and output is connected with described counnter attack unit, described voltage regulation unit respectively, and described control unit is for controlling the startup sequential of described counnter attack unit and described voltage regulation unit.
Preferably, in above-mentioned stable-pressure device, described counnter attack unit comprises the first switching transistor.
Preferably, in above-mentioned stable-pressure device, described voltage regulation unit comprises the synchronous BOOST circuit be made up of the first inductance, second switch transistor and the 3rd switching transistor.
Preferably, in above-mentioned stable-pressure device, described control unit comprises: micro-control unit MCU, comparator, the first push-pull driver circuit, the second push-pull driver circuit and triode;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described first switching transistor by described triode;
The output of described comparator is also connected with described micro-control unit MCU, an output of described micro-control unit MCU is connected with described 3rd switching transistor by described first push-pull driver circuit, and another output of described micro-control unit MCU is connected with described second switch transistor by described second push-pull driver circuit.
Preferably, in above-mentioned stable-pressure device, described voltage regulation unit comprises the synchronous BOOST circuit be made up of two switching transistors of the second inductance, the 4th switching transistor and parallel connection.
Preferably, in above-mentioned stable-pressure device, described control unit comprises: micro-control unit MCU, comparator, the first push-pull driver circuit, the second push-pull driver circuit, drive circuit and triode;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described first switching transistor by described triode, described drive circuit successively;
The output of described comparator is also connected with described micro-control unit MCU, an output of described micro-control unit MCU is connected with described 3rd switching transistor by described first push-pull driver circuit, and another output of described micro-control unit MCU is connected with two switching transistors of described parallel connection by described second push-pull driver circuit.
Preferably, in above-mentioned stable-pressure device, described first push-pull driver circuit, the second push-pull driver circuit include a PNP type triode and a NPN type triode, wherein, the base stage of described PNP type triode is connected with the base stage of described NPN type triode, and the collector electrode of described PNP type triode is connected with the collector electrode of described NPN type triode.
There is in technique scheme following beneficial effect:
In prior art, need for each power consumption equipment increases extra boosting battery to reach the object of burning voltage, known via above-mentioned technical scheme, compared with adopting the mode of boosting battery in prior art, stable-pressure device of the present invention can carry out voltage stabilizing to multiple power consumption equipment simultaneously, and do not need to increase extra boosting battery for each power consumption equipment, therefore greatly reduce vehicle-mounted electricity consumption equipment volume, save the usage space of vehicle.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of structural representation of the stable-pressure device that Fig. 1 provides for the embodiment of the present invention;
A kind of electrical block diagram of the voltage regulation unit that Fig. 2 provides for the embodiment of the present invention;
A kind of electrical block diagram of the control unit that Fig. 3 provides for the embodiment of the present invention;
Another electrical block diagram of the voltage regulation unit that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is a kind of variation diagram of vehicle carried power voltage provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the present invention provides a kind of structural representation of stable-pressure device, and stable-pressure device comprises counnter attack unit 100, control unit 300 and voltage regulation unit 200, wherein, one end of stable-pressure device is connected with vehicle power, and the other end is connected with multiple load 400;
Counnter attack unit 100 flows to positive pole side for preventing electric current from load negative pole side, and its input is connected with vehicle power, and output is connected with load, and wherein, counnter attack unit 100 can be switching transistor or diode;
Voltage regulation unit 200 is for being converted into stable voltage signal by the voltage signal of the change received from vehicle power, and its input is connected with vehicle power, and output is connected with load;
The input of control unit 300 is connected with vehicle power, and output is connected with counnter attack unit, voltage regulation unit respectively, and control unit is for controlling the startup sequential of counnter attack unit and voltage regulation unit.
In prior art, need for each power consumption equipment increases extra boosting battery to reach the object of burning voltage, known via above-mentioned technical scheme, compared with adopting the mode of boosting battery in prior art, stable-pressure device of the present invention can carry out voltage stabilizing to multiple power consumption equipment simultaneously, and do not need to increase extra boosting battery for each power consumption equipment, therefore greatly reduce vehicle-mounted electricity consumption equipment volume, save the usage space of vehicle.
See Fig. 2, present embodiment illustrates a kind of structural representation of counnter attack unit 100 and a kind of structural representation of voltage regulation unit 200, wherein, counnter attack unit 100 can comprise the first switching transistor Q1, first switching transistor Q1 can select FET(FieldEffectTransistor, field effect transistor) device.
Voltage regulation unit 200 can comprise the synchronous BOOST circuit be made up of the first inductance L 1, second switch transistor Q2 and the 3rd switching transistor Q3, second switch transistor Q2 and the 3rd switching transistor Q3 all can adopt FET(FieldEffectTransistor, field effect transistor) device, wherein, the first switching transistor Q1, second switch transistor Q2 and the 3rd switching transistor Q3 are all operated on off state.Vehicle power adopts powered battery, and represent with VB, it can be storage battery or lithium battery.。In figure, 400 is load, and load can have multiple.
See Fig. 3, Fig. 3 shows a kind of structural representation of control unit 300, control unit 300 comprises: MCU(MicroControlUnit, micro-control unit), comparator U2, the first push-pull driver circuit 310, second push-pull driver circuit 320, drive circuit 330 and triode QN1; Wherein, the input of comparator U2 is connected with vehicle power VB, and output is successively by triode QN1, and drive circuit 330 is connected with the first switching transistor Q1, and also, the first switching transistor Q1 in output Q1_CTR and the Fig. 2 in Fig. 3 connects; The output of comparator U2 is also connected with micro-control unit MCU, an output of micro-control unit MCU is connected with the 3rd switching transistor by the first push-pull driver circuit 310, also namely, the 3rd switching transistor Q3 in output Q3_CTR and the Fig. 2 in Fig. 3 connects; Another output of micro-control unit MCU is connected with second switch crystal Q2 pipe by the second push-pull driver circuit 320, and also, the second switch transistor Q2 in output Q2_CTR and the Fig. 2 in Fig. 3 connects.
Above-mentioned drive circuit can comprise inverter and boostrap circuit module, and drive circuit realizes the amplification of drive singal and anti-phase, reaches the object driving the first switching transistor Q1 smoothly.When specific implementation, can be made up of separating component triode, diode, resistance and electric capacity, also can be realized by special integrated chip, not repeat at this.
Above-mentioned first push-pull driver circuit can comprise a PNP type triode QP1 and NPN type triode QN2, wherein, the base stage of PNP type triode QP1 is connected with the base stage of NPN type triode QN2, and the collector electrode of PNP type triode QP1 is connected with the collector electrode of NPN type triode QN2.Above-mentioned second push-pull driver circuit can comprise a PNP type triode QP2 and NPN type triode QN3, wherein, the base stage of PNP type triode QP2 is connected with the base stage of NPN type triode QN3, and the collector electrode of PNP type triode QP2 is connected with the collector electrode of NPN type triode QN3.Concrete, one of them pin of MCU is connected with the base stage of QP1 by R5 and QN2, and MCU wherein another pin is connected with the base stage of QP2 by R7 and QN3; R1 and R2 connects, the sample circuit of composition VB, and the output of U2 is connected with the base stage of QN1, is also connected with the base stage of QP1 with QN2, the base stage of QN3 with QP2 respectively by MCU simultaneously; The collector electrode of QN1 is connected with the first switch transistors Q1, for driving the first switch transistors Q1 by R4, drive circuit 330 successively; QN2 and QP1 forms the first push-pull driver circuit, and drive the 3rd switching transistor Q3 by resistance R6, QN3 and QP2 forms the second push-pull driver circuit, drives second switch transistor Q2 by resistance R8.R1 ~ R8 in Fig. 3 is fixed value resistance, and those skilled in the art can select the resistance of R1 ~ R8 according to actual conditions, do not repeat at this.
See Fig. 4, present embodiment illustrates another structural representation of voltage regulation unit 200, voltage regulation unit 200 can comprise by the second inductance L 2, two switching transistor Q2A of the 4th switching transistor Q4 and parallel connection, the synchronous BOOST circuit of Q2B composition, two switching transistor Q2A of the 4th switching transistor Q4 and parallel connection all can adopt FET(FieldEffectTransistor, field effect transistor) device, in the present embodiment, the second switch transistor Q2 in Fig. 2 is replaced by two switching transistor Q2A in parallel, Q2B, its meaning is: two switching transistor Q2A, the parallel connection of Q2B can reduce the current stress of single tube, cost can be reduced simultaneously, improve the reliability of device.
The control unit corresponding to the voltage regulation unit 200 shown in Fig. 4 is also see Fig. 3, Fig. 3 shows a kind of structural representation of control unit 300, control unit 300 comprises: MCU(MicroControlUnit, micro-control unit), comparator U2, the first push-pull driver circuit 310, second push-pull driver circuit 320 and triode QN1; Wherein, the input of comparator U2 is connected with vehicle power VB, and output is connected with the first switching transistor Q1 by triode QN1, and also, the first switching transistor Q1 in output Q3_CTR and the Fig. 4 in Fig. 3 connects; The output of comparator U2 is also connected with micro-control unit MCU, an output of micro-control unit MCU is connected with the 4th switching transistor by the first push-pull driver circuit 310, also namely, the 4th switching transistor Q4 in output Q3_CTR and the Fig. 4 in Fig. 3 connects; Another output of micro-control unit MCU is connected with two switching transistors Q2A, Q2B in parallel by the second push-pull driver circuit 320, and also, two switching transistors Q2A, the Q2B of the parallel connection in output Q2_CTR and the Fig. 4 in Fig. 4 connect.In figure, 400 is load, and load can have multiple.
Above-mentioned first push-pull driver circuit can comprise a PNP type triode QP1 and NPN type triode QN2, wherein, the base stage of PNP type triode QP1 is connected with the base stage of NPN type triode QN2, and the collector electrode of PNP type triode QP1 is connected with the collector electrode of NPN type triode QN2.Above-mentioned second push-pull driver circuit can comprise a PNP type triode QP2 and NPN type triode QN3, wherein, the base stage of PNP type triode QP2 is connected with the base stage of NPN type triode QN3, and the collector electrode of PNP type triode QP2 is connected with the collector electrode of NPN type triode QN3.Concrete, one of them pin of MCU is connected with the base stage of QP1 by R5 and QN2, and MCU wherein another pin is connected with the base stage of QP2 by R7 and QN3; R1 and R2 connects, the sample circuit of composition VB, and the output of U2 is connected with the base stage of QN1, is also connected with the base stage of QP1 with QN2, the base stage of QN3 with QP2 respectively by MCU simultaneously; The collector electrode of QN1 is connected with the first switch transistors Q1, for driving the first switch transistors Q1 by R4, drive circuit 330 successively; QN2 and QP1 forms the first push-pull driver circuit, and drive the 4th switching transistor Q4 by resistance R6, QN3 and QP2 forms the second push-pull driver circuit, drives two switching transistors Q2A, Q2B in parallel by resistance R8.R1 ~ R8 in Fig. 3 is fixed value resistance, and those skilled in the art can select the resistance of R1 ~ R8 according to actual conditions, do not repeat at this.
Below in conjunction with Fig. 5, the course of work of stable-pressure device provided by the invention is described for car 12V system, it should be noted that, this device is suitable for 24V system or other battery power supply systems simultaneously.
When the start stop system of car does not work, the voltage of vehicle power VB is the comparator U2 output low level in Vn, Fig. 3 control unit, Q1_CTR exports high level, the first switching transistor Q1 now in Fig. 2 and Fig. 4 is all in conducting state, and electric current flows out from battery, flows to load through Q1; MCU now in Fig. 3 control unit does not have PWM ripple to export, Q2_CTR output low level, Q3_CTR output low level, second switch transistor Q2 in Fig. 2 ends, 3rd switching transistor Q3 ends, and the series impedance of the body diode of the first inductance L 1 and the 3rd switching transistor Q3 is greater than the first switching transistor Q1 and non-inflow current.In the circuit diagram shown in Fig. 4, same, two switching transistors Q2A, Q2B in parallel, and the 4th switching transistor Q4 is all in cut-off state, does not have electric current to flow into.
When the start stop system work of car, vehicle power VB falls rapidly, with reference to figure 5:
When vehicle power VB is lower than first threshold VH1, comparator U2 output low level in Fig. 3 control unit, MCU has PWM ripple to export, now, Q1_CTR exports high level, the first switching transistor Q1 in Fig. 2 and Fig. 4 ends, second switch transistor Q2 in circuit diagram shown in Fig. 2 and the 3rd switching transistor Q3 works with complementary PWM mode, in the circuit diagram shown in Fig. 4, two switching transistor Q2A in parallel, Q2B and the 4th switching transistor Q4 works with complementary PWM mode, now circuit equivalent is in " BOOST " topology, lower vehicle carried power voltage is converted to burning voltage, because now output voltage is greater than vehicle power VB, then the body diode of the first switching transistor Q1 also oppositely ends,
When vehicle carried power voltage VB returns to Second Threshold VH2, the Q2_CTR output low level in Fig. 3 control unit, Q3_CTR exports high level, second switch transistor Q2 in circuit diagram shown in Fig. 2 ends, 3rd switching transistor Q3 conducting, electric current flows to load through L1, Q3; Two switching transistor Q2A, Q2B cut-offs in parallel in circuit diagram shown in Fig. 4,4th switching transistor Q4 conducting, electric current is through L2, Q4 flows to load, because the first inductance L 1 and the total DC impedance of the 3rd switching transistor Q3 are less than the impedance of the first switching transistor Q1, so the first switching transistor Q1 closes automatically;
When vehicle carried power voltage VB returns to the 3rd threshold value VH3, Q1_CTR in Fig. 3 control unit exports high level, Q3_CTR output low level, now, the first switching transistor Q1 conducting in circuit diagram shown in Fig. 2,3rd switching transistor Q3 ends, and electric current flows to load through the first switching transistor Q1.If voltage regulation unit is the circuit diagram shown in Fig. 4, then the first switching transistor Q1 conducting, the 4th switching transistor Q4 ends, and electric current flows to load through the first switching transistor Q1, and now load is directly powered by Vehicular accumulator cell.According to the difference of the first threshold values VH1, the second threshold values VH2, the 3rd threshold values VH3, control circuit controls opening of each switching tube and cuts out, and realizes described function.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
Finally, also it should be noted that, in this article, the relational terms of such as first, second, third and fourth etc. and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing the application.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a stable-pressure device, one end is connected with vehicle power, it is characterized in that, its other end is connected with multiple load, and described device comprises counnter attack unit, control unit and voltage regulation unit;
Wherein, described counnter attack unit flows to the positive pole side of described vehicle power for preventing electric current from described load negative pole side, and its input is connected with described vehicle power, and output is connected with described load; Described counnter attack unit comprises the first switching transistor;
Described voltage regulation unit is used for the voltage signal of the change received from described vehicle power to be converted into stable voltage signal, and its input is connected with described vehicle power, and output is connected with described load;
The input of described control unit is connected with described vehicle power, and output is connected with described counnter attack unit, described voltage regulation unit respectively, and described control unit is for controlling the startup sequential of described counnter attack unit and described voltage regulation unit;
Wherein: described voltage regulation unit comprises the synchronous BOOST circuit be made up of the first inductance, second switch transistor and the 3rd switching transistor;
Described control unit comprises: micro-control unit MCU, comparator, the first push-pull driver circuit, the second push-pull driver circuit and triode;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described first switching transistor by described triode;
The output of described comparator is also connected with described micro-control unit MCU, an output of described micro-control unit MCU is connected with described 3rd switching transistor by described first push-pull driver circuit, and another output of described micro-control unit MCU is connected with described second switch transistor by described second push-pull driver circuit;
Or,
Described voltage regulation unit comprises the synchronous BOOST circuit be made up of two switching transistors of the second inductance, the 4th switching transistor and parallel connection;
Described control unit comprises: micro-control unit MCU, comparator, the first push-pull driver circuit, the second push-pull driver circuit, drive circuit and triode;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described first switching transistor by described triode, described drive circuit successively;
The output of described comparator is also connected with described micro-control unit MCU, an output of described micro-control unit MCU is connected with described 4th switching transistor by described first push-pull driver circuit, and another output of described micro-control unit MCU is connected with two switching transistors of described parallel connection by described second push-pull driver circuit.
2. stable-pressure device according to claim 1, it is characterized in that, described first push-pull driver circuit, the second push-pull driver circuit include a PNP type triode and a NPN type triode, wherein, the base stage of described PNP type triode is connected with the base stage of described NPN type triode, and the collector electrode of described PNP type triode is connected with the collector electrode of described NPN type triode.
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| CN201310105072.8A CN103151923B (en) | 2013-03-28 | 2013-03-28 | A kind of stable-pressure device |
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| CN107092896A (en) * | 2014-12-30 | 2017-08-25 | 深圳市汇顶科技股份有限公司 | Fingerprint Identification sensor and terminal device |
| CN110233572A (en) * | 2019-07-11 | 2019-09-13 | 苏州华兴源创科技股份有限公司 | A kind of constant pressure source and constant-voltage outputting method |
| CN110798066A (en) * | 2019-10-10 | 2020-02-14 | 华东光电集成器件研究所 | Low ripple numerical control boosting power supply |
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| CN1424811A (en) * | 2003-01-06 | 2003-06-18 | 艾默生网络能源有限公司 | Synchronous rectifying driving circuit for DC converter |
| TW201230638A (en) * | 2010-07-21 | 2012-07-16 | Sharp Kk | Power supply device |
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| JP4177412B2 (en) * | 2003-08-05 | 2008-11-05 | 松下電器産業株式会社 | DC power supply device and battery-powered electronic device incorporating the same |
| JP4597596B2 (en) * | 2004-07-13 | 2010-12-15 | パイオニア株式会社 | Vehicle power supply |
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| CN1424811A (en) * | 2003-01-06 | 2003-06-18 | 艾默生网络能源有限公司 | Synchronous rectifying driving circuit for DC converter |
| TW201230638A (en) * | 2010-07-21 | 2012-07-16 | Sharp Kk | Power supply device |
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 8 / F, block B, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |