CN203135717U - Voltage-stabilizing device - Google Patents
Voltage-stabilizing device Download PDFInfo
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- CN203135717U CN203135717U CN 201320149032 CN201320149032U CN203135717U CN 203135717 U CN203135717 U CN 203135717U CN 201320149032 CN201320149032 CN 201320149032 CN 201320149032 U CN201320149032 U CN 201320149032U CN 203135717 U CN203135717 U CN 203135717U
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- diode
- switching transistor
- vehicle power
- voltage
- vehicle
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Abstract
The embodiment of the utility model provides a voltage-stabilizing device, one end of the voltage-stabilizing device is connected with a vehicle-mounted power supply, and the other end is connected with a plurality of loads. The device comprises a second diode, a BOOST circuit and a control circuit, wherein an anode of the second diode is connected with the vehicle-mounted power supply, and a cathode of the second diode is connected with the loads; the BOOST circuit is composed of an inductor, a switching transistor and a first diode, one end of the inductor is connected with the vehicle-mounted power supply, and a cathode of the first diode is connected with the loads; and an input end of the control circuit is connected with the vehicle-mounted power supply, an output end is connected with the switching transistor, and the control circuit is used for controlling the start of the first switching transistor. Compared with the method of adopting an auxiliary battery in the prior art, the voltage-stabilizing device provided by the utility model can stabilize voltages for a plurality of electricity-utilization devices simultaneously without adding an extra auxiliary battery for each electricity-utilization device, thereby greatly reducing the sizes of the vehicle-mounted electricity-utilization devices, and saving the used space of the vehicles.
Description
Technical field
The utility model relates to the voltage stabilizing technique field, relates to a kind of stable-pressure device in particular.
Background technology
In adopting the vehicle of 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 is fallen cell voltage that responsive performance is arranged.Fall influence to system in order to reduce cell voltage, responsive power consumption equipment usually needs to design separately expensive guard method, in the flame-out voltage-stabilizing system of existing starting, adopts the method for boosting battery to solve because main battery voltage falls problem usually.And the method that adopts boosting battery has caused the volume of power consumption equipment to increase, thereby has restricted the increase of power consumption equipment.
The utility model content
In view of this, in order to solve the problem that the volume that adopts the power consumption equipment that the boosting battery method causes increases, the purpose of the utility model embodiment is to provide a kind of stable-pressure device, and an end is connected with vehicle power, its other end is connected with a plurality of loads, and described device comprises:
Anode is connected with described vehicle power, second diode that negative electrode is connected with described load;
Be made up of inductance, switching transistor and first diode, an end of described inductance is connected with described vehicle power, the BOOST circuit that the negative electrode of described first diode is connected with described load;
Input is connected with described vehicle power, and output is connected with described switching transistor, controls the control circuit that the described first switch crystal starts.
Preferably, in above-mentioned stable-pressure device, described control circuit comprises: micro-control unit MCU, comparator and push-pull driver circuit;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described switching transistor by described micro-control unit MCU, described push-pull driver circuit successively.
Preferably, in above-mentioned stable-pressure device, described push-pull driver circuit comprises:
A positive-negative-positive triode and a NPN type triode, the base stage of described positive-negative-positive triode is connected with the base stage of described NPN type triode, and the collector electrode of described positive-negative-positive triode is connected with the collector electrode of described NPN type triode.
Have following beneficial effect in the technique scheme:
In the prior art, need increase extra boosting battery to reach the purpose of burning voltage for each power consumption equipment, via above-mentioned technical scheme as can be known, compare with the mode of available technology adopting boosting battery, stable-pressure device of the present utility model can carry out voltage stabilizing to a plurality of power consumption equipments simultaneously, and do not need to increase extra boosting battery for each power consumption equipment, therefore significantly reduced vehicle-mounted electricity consumption equipment volume, saved the usage space of vehicle.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 provides a kind of structural representation of stable-pressure device for the utility model embodiment;
The electrical block diagram of the control circuit that Fig. 2 provides for the utility model embodiment;
A kind of variation diagram of the vehicle power voltage that Fig. 3 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Participate in Fig. 1, the utility model embodiment provides a kind of structural representation of stable-pressure device, and an end is connected with vehicle power VB, and its other end is connected with a plurality of loads 300, and device comprises:
Anode is connected with vehicle power VB, and the second diode D2 that negative electrode is connected with load 300, D2 can select low pressure reduction diode for use, as Schottky diode;
Be made up of inductance L 1, switching transistor Q1 and the first diode D1, an end of inductance L 1 is connected with vehicle power VB, the BOOST circuit 100 that the negative electrode of a diode D1 is connected with load;
Input is connected with vehicle power VB, and output is connected with switching transistor Q1, controls the control circuit that the first switch crystal Q1 starts.
Referring to Fig. 2, Fig. 2 shows a kind of structural representation of control circuit, and control circuit comprises: MCU(Micro Control Unit, micro-control unit), comparator U2, push-pull driver circuit 210;
Wherein, the input of comparator U2 is connected with vehicle power VB, and output is connected with switching transistor Q1 by micro-control unit MCU, push-pull driver circuit 110 successively, also is that the output Q1_CTR among Fig. 2 is connected with switching transistor Q1 among Fig. 1.
Push-pull driver circuit 210 comprises:
A positive-negative-positive triode QP1 and a NPN type triode QN1, the base stage of positive-negative-positive triode QP1 is connected with the base stage of NPN type triode QN1, and the collector electrode of positive-negative-positive triode QP1 is connected with the collector electrode of NPN type triode QN1.
Concrete, one of them pin of MCU links to each other with the base stage of QN1 and QP1 by R3; R1 and R2 series connection, the sample circuit of composition vehicle power VB, the output of U2 links to each other with MCU; QN1 and QP1 form push-pull driver circuit, drive the switching transistor Q1 shown in Fig. 1 by resistance R 1.R1～R4 among Fig. 2 is fixed value resistance, and those skilled in the art can select the resistance of R1～R4 according to actual conditions, does not do at this and gives unnecessary details.
Below in conjunction with Fig. 3, be the course of work that example illustrates the stable-pressure device that the utility model provides with car 12V system, need to prove that this device is suitable for 24V system or other battery power supply systems simultaneously.
When the start stop system of car is not worked, the voltage of vehicle power VB is Vn, comparator U2 output is low level in Fig. 2 control circuit, MCU does not have the output of PWM ripple, electric current flows out from vehicle power VB, flow to load through the second diode D2, this moment, the series impedance of inductance L 1 and the first diode D1 is inflow current not greater than the second diode D2 because switching transistor Q1 ends.
When start stop system is worked, because the voltage of vehicle power VB falls rapidly, when the voltage of VB is lower than first threshold VH1, comparator U2 output is high level in Fig. 2 control system, and the switching transistor Q1 among Fig. 1 works in the PWM mode, according to the different value of VB, switching transistor Q1 will produce the PWM ripple of different duty, vehicle power voltage transitions that will be lower is stable high voltage, because output voltage is greater than vehicle power voltage at this moment, then D2 oppositely ends;
When the voltage of vehicle power VB returns to the second threshold value VH2, switching transistor Q1 ends, electric current is through inductance L 1, the first diode D1 flows to load, the total impedance of this moment first inductance L 1 and first diode D1 is less than the impedance of the second diode D2, so the second diode D2 does not have electric current to flow through;
When the voltage of vehicle power VB returned to the 3rd threshold value VH3, the first diode D1 ended, and electric current flows to load through the second diode D2.Load this moment is directly powered by Vehicular accumulator cell, without the boosting of BOOST booster circuit.
In the prior art, need increase extra boosting battery to reach the purpose of burning voltage for each power consumption equipment, via above-mentioned technical scheme as can be known, compare with the mode of available technology adopting boosting battery, stable-pressure device of the present utility model can carry out voltage stabilizing to a plurality of power consumption equipments simultaneously, and do not need to increase extra boosting battery for each power consumption equipment, therefore significantly reduced vehicle-mounted electricity consumption equipment volume, saved the usage space of vehicle.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
At last, also need to prove, in this article, relational terms such as first, second grade only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. stable-pressure device, an end is connected with vehicle power, it is characterized in that, and its other end is connected with a plurality of loads, and described device comprises:
Anode is connected with described vehicle power, second diode that negative electrode is connected with described load;
Be made up of inductance, switching transistor and first diode, an end of described inductance is connected with described vehicle power, the BOOST circuit that the negative electrode of described first diode is connected with described load;
Input is connected with described vehicle power, and output is connected with described switching transistor, controls the control circuit that the described first switch crystal starts.
2. stable-pressure device according to claim 1 is characterized in that, described control circuit comprises: micro-control unit MCU, comparator and push-pull driver circuit;
Wherein, the input of described comparator is connected with described vehicle power, and output is connected with described switching transistor by described micro-control unit MCU, described push-pull driver circuit successively.
3. stable-pressure device according to claim 2 is characterized in that, described push-pull driver circuit comprises:
A positive-negative-positive triode and a NPN type triode, the base stage of described positive-negative-positive triode is connected with the base stage of described NPN type triode, and the collector electrode of described positive-negative-positive triode is connected with the collector electrode of described NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149032 CN203135717U (en) | 2013-03-28 | 2013-03-28 | Voltage-stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149032 CN203135717U (en) | 2013-03-28 | 2013-03-28 | Voltage-stabilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135717U true CN203135717U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320149032 Expired - Lifetime CN203135717U (en) | 2013-03-28 | 2013-03-28 | Voltage-stabilizing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203135717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113220056A (en) * | 2021-03-29 | 2021-08-06 | 惠州市华阳光学技术有限公司 | Load voltage protection circuit and electronic device |
-
2013
- 2013-03-28 CN CN 201320149032 patent/CN203135717U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113220056A (en) * | 2021-03-29 | 2021-08-06 | 惠州市华阳光学技术有限公司 | Load voltage protection circuit and electronic device |
| CN113220056B (en) * | 2021-03-29 | 2022-04-19 | 惠州市华阳光学技术有限公司 | Load voltage protection circuit and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hengrun Technology Co.,Ltd. Address before: 100101 Beijing city Chaoyang District Anxiang Beili 11 B block 8 layer Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |