CN104022555B - A kind of piezoelectric type charger for mobile phone - Google Patents
A kind of piezoelectric type charger for mobile phone Download PDFInfo
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- CN104022555B CN104022555B CN201410298687.1A CN201410298687A CN104022555B CN 104022555 B CN104022555 B CN 104022555B CN 201410298687 A CN201410298687 A CN 201410298687A CN 104022555 B CN104022555 B CN 104022555B
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- voltage stabilizing
- stabilizing didoe
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- flexure strip
- negative pole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of piezoelectric type charger for mobile phone of the present invention, comprise shell, shell comprises housing, upper end cap and lower endcaps, on, lower endcaps is nested with at housing two ends respectively, housing cavity is provided with USB interface, circuit board, flexure strip, piezoelectric ceramic piece, the lower surface of circuit board is fixed by connecting rod and lower endcaps, the affixed lower endcaps in lower end of flexure strip, and the upper end of flexure strip and circuit board lower surface have space, the both sides of flexure strip post one piece of piezoelectric ceramic piece respectively, circuit board upper surface is provided with protective circuit, energy acquisition circuit and voltage conversion circuit, the output of protective circuit connects energy acquisition circuit input end, energy acquisition circuit output end connects voltage conversion circuit input, voltage conversion circuit is connected with USB interface by data wire, upper end cap upper end is run through in USB interface upper end.This device volume is little, and structure is simple, and charge efficiency is high, manufactures, carries and uses all very convenient, be beneficial to popularization.<!-- 2 -->
Description
Technical field
The present invention relates to a kind of charger, specifically a kind of piezoelectric type charger for mobile phone.
Background technology
Present stage, portable collection charger mainly contained solar mobile phone charging device, hand-operated charger for handset etc.The existing portable collection charger in market, in weather conditions when bad or evening, solar mobile phone charging device can be used hardly; Hand-operated charger for handset produces electric charge by cutting magnetic induction line, not by the impact of environment, but during charging, special going to go to shake with hand, lose time.
Summary of the invention
In order to solve the problem, the invention provides a kind of piezoelectric type charger for mobile phone, can be electric energy by the Conversion of Energy of vibration, real-time charges for mobile phone.
The present invention is by the following technical solutions: a kind of piezoelectric type charger for mobile phone, comprise shell, it is characterized in that, described shell comprises housing, upper end cap and lower endcaps, described housing is the cavity body structure of both ends open, described is upper, lower endcaps is nested with at housing two ends respectively, described housing cavity is provided with USB interface, circuit board, flexure strip, piezoelectric ceramic piece, the lower surface of described circuit board is fixed by connecting rod and lower endcaps, the affixed lower endcaps in lower end of described flexure strip, and the upper end of flexure strip and circuit board lower surface have space, the both sides of described flexure strip post one piece of piezoelectric ceramic piece respectively, described circuit board upper surface is provided with protective circuit, energy acquisition circuit and voltage conversion circuit, the output of protective circuit connects energy acquisition circuit input end, energy acquisition circuit output end connects voltage conversion circuit input, voltage conversion circuit is connected with USB interface by data wire, upper end cap upper end is run through in described USB interface upper end.
Further, the upper end of described flexure strip is fixed with mass, is used for increasing elastically-deformable amplitude.
Further, described protective circuit comprises voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, voltage stabilizing didoe D4, voltage stabilizing didoe D5 and crystal oscillator Y1, the two ends of described crystal oscillator Y1 connect voltage stabilizing didoe D1 negative pole and voltage stabilizing didoe D2 negative pole respectively, voltage stabilizing didoe D1 positive pole is connected with voltage stabilizing didoe D2 positive pole, voltage stabilizing didoe D3 positive pole connects voltage stabilizing didoe D1 negative pole, voltage stabilizing didoe D3 negative pole connects voltage stabilizing didoe D4 negative pole, voltage stabilizing didoe D4 positive pole connects voltage stabilizing didoe D2 negative pole, voltage stabilizing didoe D4 negative pole connects voltage stabilizing didoe D5 positive pole, voltage stabilizing didoe D5 negative pole connects voltage stabilizing didoe D1 positive pole, the both positive and negative polarity of voltage stabilizing didoe D5 connects two outputs respectively.
Further, described energy acquisition circuit is LTC35881 piezoelectric type energy collecting circuit.
Further, described voltage conversion circuit is that 3.5V turns 5V change-over circuit.
The invention has the beneficial effects as follows:
1, devise flexure strip, real-time transmitting vibrations, and utilize the deformation of flexure strip and the weight of mass, vibration amplified, meanwhile, because circuit loss is very little, the efficiency of therefore charging is very high.
2, devise protective circuit, prevent voltage or the excessive damage to energy acquisition circuit of electric current.
3, this device volume is little, and structure is simple, manufactures, carries and use all very convenient, very applicablely carries with, and is beneficial to popularization.
Accompanying drawing explanation
Fig. 1 is explosive view of the present invention;
Fig. 2 is way circuit principle schematic of the present invention.
In Fig. 1: 1 shell, 11 upper end cap, 12 housings, 13 lower endcaps, 2 circuit boards, 3 flexure strips, 4 piezoelectric ceramic pieces, 5 masses, 6 connecting rods, 7USB interface.
Embodiment
A kind of piezoelectric type charger for mobile phone as shown in Figure 1, comprise shell 1, described shell comprises housing 12, upper end cap 11 and lower endcaps 13, described housing 12 is the cavity body structure of both ends open, described is upper, lower endcaps is nested with at housing two ends respectively, described housing cavity is provided with USB interface 7, circuit board 2, flexure strip 3, piezoelectric ceramic piece 4, the lower surface of described circuit board 2 is fixed by connecting rod 6 and lower endcaps 13, the affixed lower endcaps 13 in lower end of described flexure strip 3, and the upper end of flexure strip 3 and circuit board 2 lower surface have space, the both sides of described flexure strip 3 post one piece of piezoelectric ceramic piece 4 respectively, the upper end of described flexure strip is fixed with mass, be used for increasing elastically-deformable amplitude, described circuit board 2 upper surface is provided with protective circuit, energy acquisition circuit and voltage conversion circuit, the output of protective circuit connects energy acquisition circuit input end, energy acquisition circuit output end connects voltage conversion circuit input, voltage conversion circuit is connected with USB interface 7 by data wire, described USB interface 7 upper end is run through upper end cap 11 upper end and is in communication with the outside.
As shown in Figure 2, described protective circuit is mainly anti-return circuit, and described energy acquisition circuit is LTC35881 piezoelectric type energy collecting circuit, and described voltage conversion circuit is that 3.5V turns 5V change-over circuit.
Described protective circuit comprises voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, voltage stabilizing didoe D4, voltage stabilizing didoe D5 and crystal oscillator Y1, the two ends of described crystal oscillator Y1 connect voltage stabilizing didoe D1 negative pole and voltage stabilizing didoe D2 negative pole respectively, voltage stabilizing didoe D1 positive pole is connected with voltage stabilizing didoe D2 positive pole, voltage stabilizing didoe D3 positive pole connects voltage stabilizing didoe D1 negative pole, voltage stabilizing didoe D3 negative pole connects voltage stabilizing didoe D4 negative pole, voltage stabilizing didoe D4 positive pole connects voltage stabilizing didoe D2 negative pole, voltage stabilizing didoe D4 negative pole connects voltage stabilizing didoe D5 positive pole, voltage stabilizing didoe D5 negative pole connects voltage stabilizing didoe D1 positive pole, the both positive and negative polarity of voltage stabilizing didoe D5 connects PZ1 port and the PZ2 port of LTC35881 chip respectively.Wherein, D1, D2, D3, D4 are the anti-return circuit of IN4007 composition, after preventing multiple piezoelectric patches parallel connection, form closed-loop path; D5 is IN4742,12V voltage stabilizing didoe, thus after circuit conversion; maximum output voltage is 12V, effectively protects energy collection circuit.
During use; mobile phone charging port is connected with USB interface; in the process of walking; owing to experiencing vibration, flexure strip generation deformation, passes to piezoelectric ceramic piece after vibration being amplified; piezoelectric ceramic piece produces electric charge and concussion frequency; the crystal oscillator of protective circuit receives frequency of oscillation and generation current, and electric current, after the mobile phone of energy acquisition circuit, eventually passes voltage transitions and is input in mobile phone.
The efficiency analysis of this charger is as follows:
The output voltage of piezoelectric ceramic piece after protective circuit and current/voltage: 12V
Electric current by:
:
LTC3588-1 operating current is 960nA;
LTC4070 operating current is 450nA;
So total output current by:
I
out＝I
out1-I
3588-I
4070
: I
out=1920-0.96-045=1918.59uA
It can thus be appreciated that the loss of circuit is very little, even negligible.
Except structure of the present invention, all the other are prior art.
The above is the preferred embodiment of the present invention, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also regarded as protection scope of the present invention.
Claims (5)
1. a piezoelectric type charger for mobile phone, comprise shell, it is characterized in that, described shell comprises housing, upper end cap and lower endcaps, described housing is the cavity body structure of both ends open, described is upper, lower endcaps is nested with at housing two ends respectively, described housing cavity is provided with USB interface, circuit board, flexure strip, piezoelectric ceramic piece, the lower surface of described circuit board is fixed by connecting rod and lower endcaps, the affixed lower endcaps in lower end of described flexure strip, and the upper end of flexure strip and circuit board lower surface have space, the both sides of described flexure strip post one piece of piezoelectric ceramic piece respectively, described circuit board upper surface is provided with protective circuit, energy acquisition circuit and voltage conversion circuit, the output of protective circuit connects energy acquisition circuit input end, energy acquisition circuit output end connects voltage conversion circuit input, voltage conversion circuit is connected with USB interface by data wire, upper end cap upper end is run through in described USB interface upper end.
2. a kind of piezoelectric type charger for mobile phone according to claim 1, it is characterized in that, the upper end of described flexure strip is fixed with mass, is used for increasing elastically-deformable amplitude.
3. a kind of piezoelectric type charger for mobile phone according to claim 1 and 2, it is characterized in that, described protective circuit comprises voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, voltage stabilizing didoe D4, voltage stabilizing didoe D5 and crystal oscillator Y1, the two ends of described crystal oscillator Y1 connect voltage stabilizing didoe D1 negative pole and voltage stabilizing didoe D2 negative pole respectively, voltage stabilizing didoe D1 positive pole is connected with voltage stabilizing didoe D2 positive pole, voltage stabilizing didoe D3 positive pole connects voltage stabilizing didoe D1 negative pole, voltage stabilizing didoe D3 negative pole connects voltage stabilizing didoe D4 negative pole, voltage stabilizing didoe D4 positive pole connects voltage stabilizing didoe D2 negative pole, voltage stabilizing didoe D4 negative pole connects voltage stabilizing didoe D5 positive pole, voltage stabilizing didoe D5 negative pole connects voltage stabilizing didoe D1 positive pole, the both positive and negative polarity of voltage stabilizing didoe D5 connects two outputs respectively.
4. a kind of piezoelectric type charger for mobile phone according to claim 1 and 2, is characterized in that, described energy acquisition circuit is LTC35881 piezoelectric type energy collecting circuit.
5. a kind of piezoelectric type charger for mobile phone according to claim 1 and 2, is characterized in that, described voltage conversion circuit is that 3.5V turns 5V change-over circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410298687.1A CN104022555B (en) | 2014-06-27 | 2014-06-27 | A kind of piezoelectric type charger for mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410298687.1A CN104022555B (en) | 2014-06-27 | 2014-06-27 | A kind of piezoelectric type charger for mobile phone |
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| CN104022555B true CN104022555B (en) | 2015-12-30 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104283295A (en) * | 2014-10-22 | 2015-01-14 | 苏州网信信息科技有限公司 | Portable head-on collision mobile power supply |
| CN105720647A (en) * | 2016-04-11 | 2016-06-29 | 西南交通大学 | Power adapter with multiple charging modes |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201708712U (en) * | 2010-05-31 | 2011-01-12 | 朱盼 | Piezoelectric type vibration electricity generator |
| CN201928319U (en) * | 2010-12-06 | 2011-08-10 | 中兴通讯股份有限公司 | Mobile phone charged by piezoelectric module |
| CN102801203A (en) * | 2012-09-03 | 2012-11-28 | 桂林电子科技大学 | Piezoelectric power-generation charger |
| CN203933119U (en) * | 2014-06-27 | 2014-11-05 | 济南大学 | A kind of piezoelectric type charger for mobile phone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009114644A2 (en) * | 2008-03-11 | 2009-09-17 | Adaptivenergy Llc. | Circuits for harvesting energy from piezoelectric devices |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201708712U (en) * | 2010-05-31 | 2011-01-12 | 朱盼 | Piezoelectric type vibration electricity generator |
| CN201928319U (en) * | 2010-12-06 | 2011-08-10 | 中兴通讯股份有限公司 | Mobile phone charged by piezoelectric module |
| CN102801203A (en) * | 2012-09-03 | 2012-11-28 | 桂林电子科技大学 | Piezoelectric power-generation charger |
| CN203933119U (en) * | 2014-06-27 | 2014-11-05 | 济南大学 | A kind of piezoelectric type charger for mobile phone |
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