CN100433501C - Solar energy type portable charger - Google Patents
Solar energy type portable charger Download PDFInfo
- Publication number
- CN100433501C CN100433501C CNB2006101266633A CN200610126663A CN100433501C CN 100433501 C CN100433501 C CN 100433501C CN B2006101266633 A CNB2006101266633 A CN B2006101266633A CN 200610126663 A CN200610126663 A CN 200610126663A CN 100433501 C CN100433501 C CN 100433501C
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- CN
- China
- Prior art keywords
- mentioned
- voltage
- opened contact
- push button
- normally opened
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S323/00—Electricity: power supply or regulation systems
- Y10S323/906—Solar cell systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The aim of the present invention is to provide a solar type portable charger capable of properly notifying whether electric power necessary for charging a load is stored in a secondary battery or not, without consuming the electric power of the secondary battery as much as possible. A voltage determination circuit 30 operates by the voltage of the secondary battery 3, only when a push-bottom type normally-opened contact 23 is turned on. The voltage determination circuit 30 turns on a transistor 26, only when the voltage of the secondary battery 3 is below a set level. When the transistor 26 is turned on, the energizing path between the output terminal of a DC-DC converter 10 and a light emitting diode 24 is formed, lighting the light emitting diode 24.
Description
Technical field
The present invention relates to utilize the solar energy type portable charger of the energy of sunlight to load chargings such as portable telephones.
Background technology
Popularizing of portable telephone is very remarkable, and many people are enjoying its convenience.This portable telephone is power supply with the battery, and this battery is by the charger charging that utilizes commercial ac power source.
But,, portable telephone can not charged owing to there is charger at destination and the Reiseziel of going out.In addition, in special moments such as disasters,,, portable telephone can not be charged even charger is arranged because of the power failure of commercial ac power source.
So, continually develop and practicability solar energy type portable charger, the secondary cell that this solar energy type portable charger has solar cell and utilizes the output of this solar cell to charge is transformed to direct current by DC-DC transducer (converter) and supplies to portable telephone being stored in electric power in the secondary cell.
If such solar energy type portable charger is arranged,,, also can use the energy of sunlight that portable telephone is charged in special moments such as disasters even then at destination and the Reiseziel of going out.
In above-mentioned solar energy type portable charger, even light-struck situation, if also do not store enough electric power in the secondary cell, can not be with portable telephone charging as load.
So, consider by luminous element for example the light on and off of light-emitting diode be reported in the required electric power of charging that whether stores portable telephone in the secondary cell.
But, in the case, importantly, do not consume the valuable electric power that is stored in the secondary cell as far as possible.
Summary of the invention
The purpose of a technical scheme of the present invention provides a kind of can trying one's best and does not consume the electric power of secondary cell and suitably be reported in the solar energy type portable charger of the required electric power of the charging that whether stores load in the secondary cell.
The solar energy type portable charger of a technical scheme of the present invention possesses:
Solar cell;
Secondary cell utilizes the output of above-mentioned solar cell to be recharged;
The DC-DC transducer is the direct voltage of specified level with the voltage transformation of above-mentioned secondary cell;
Terminal is used in charging, is connected on the output of above-mentioned DC-DC transducer;
Energising control switch;
The push button normally opened contact of self-return type;
Luminous element is connected on the output of above-mentioned DC-DC transducer with switch and above-mentioned push button normally opened contact via above-mentioned energising control;
The voltage decision circuitry is connected with above-mentioned secondary cell via above-mentioned push button normally opened contact, moves when this push button normally opened contact conducting, is lower than at the voltage of above-mentioned secondary cell under the situation of setting level above-mentioned energising control switch conduction.
That is, only when the conducting of push button normally opened contact, utilize the voltage of secondary cell to make the action of voltage decision circuitry.The voltage decision circuitry is lower than under the situation of setting level at the voltage of secondary cell, the control switch conduction of will switching on.If switch conduction is used in energising control, then form the output of DC-DC transducer and the energising circuit between the luminous element, luminous element is lighted.
Other purposes of the present invention and advantage can be set forth in the following description, and partial content is conspicuous according to explanation, perhaps can understand by implementing the present invention.By means and the combination of pointing out below thereof, can realize and reach objects and advantages of the present invention.
Description of drawings
Accompanying drawing is the part of specification, describes currently preferred embodiment of the present invention, combines with explanation of above-mentioned generality and following detailed description of preferred embodiments, is used to illustrate design of the present invention.
Fig. 1 is the figure of the structure of expression one embodiment of the present invention.
Embodiment
One embodiment of the present invention is described with reference to the accompanying drawings.
In Fig. 1, the 1st, solar cell produces direct voltage by being subjected to light.The output voltage of this solar cell 1 is charged in the secondary cell 3 through the diode 2 that anti-backflow is used along clockwise direction.As secondary cell 3, for example using, rated voltage is the Ni-MH battery of 2.4V.
And, on secondary cell 3, be connected with capacitor 4 and DC-DC transducer 10.DC-DC transducer 10 has inductor 11, diode 13, control circuit (IC circuit) 14, and FET15, and the conversion (switching) that causes by frequency modulation(FM) (PFM) is for example direct voltage of 5V of specified level with the voltage transformation of secondary cell 3.That is, if the output voltage of this DC-DC transducer 10 is lower than 5V, then control circuit 14 is changed, and the output voltage of this DC-DC transducer 10 is maintained more than the 5V.
Be connected with capacitor 5 on the output of this DC-DC transducer 10, the noise filter that constitutes via coil 6 and capacitor 7 on this capacitor 5 is connected with charging terminal 8a, 8b.Be connected with portable telephone on terminal 8a, 8b in this charging as load.
In addition, be connected with for example anode of light-emitting diode 21 of luminous element that emergency lighting uses on the positive side output (+) of DC-DC transducer 10, the negative electrode of this light-emitting diode 21 is connected on the minus side output () of DC-DC transducer 10 via the push button normally opened contact 23 of resistance 22 and self-return type.
And then, the luminous element that is connected with voltage level report usefulness on the positive side output (+) of DC-DC transducer 10 is the anode of light-emitting diode 24 for example, the negative electrode of this light-emitting diode 24 for example between the collector electrode and emitter of NPN transistor (the 1st transistor) 26, is connected on the minus side output (-) of DC-DC transducer 10 with switch via resistance 25 and energising control.When 23 conductings of push button normally opened contact, transistor 26 conductings, then light-emitting diode 24 is lighted.
On the other hand, on secondary cell 3, connecting voltage decision circuitry 30 via push button normally opened contact 23.Voltage decision circuitry 30 utilizes the voltage of secondary cell 3 to move when 23 conductings of push button normally opened contact, if the voltage of secondary cell 3 is for being lower than under the state of setting level (for example 1.9V), then with above-mentioned transistor 26 conductings.
Concrete structure to voltage decision circuitry 30 describes.At first, the series circuit of resistance (the 1st resistance) 31 and resistance (the 2nd resistance) 32 is connected on the secondary cell 3 via push button normally opened contact 23.And, will be connected on the resistance 32 between the base stage of NPN transistor (the 2nd transistor) 33 and the emitter.The collector electrode of transistor 33 is connected via resistance 34 on the positive side output (+) of DC-DC transducer 10, and the emitter of transistor 33 is connected on the minus side output (-) of DC-DC transducer 10 via push button normally opened contact 23.And then capacitor 41 is connected on the output of DC-DC transducer 10 via push button normally opened contact 23.In addition, the collector electrode of resistance (the 3rd resistance) 44 and NPN transistor (the 3rd transistor) 43 is connected with secondary cell 3 via push button normally opened contact 23 with series circuit between the emitter.And, will be connected on the capacitor 41 via resistance 42 between the base stage of transistor 43 and the emitter, and the interlinkage of above-mentioned resistance 31,32 is connected on the collector electrode of transistor 43 via resistance (the 4th resistance) 45.
The effect of said structure then is described.
If illumination is on solar cell 1, then from solar cell 1 output dc voltage.Utilize this output voltage to secondary cell 3 chargings.
If portable telephone is connected charging with on terminal 8a, the 8b, then the voltage of secondary cell 3 is transformed to direct voltage by DC-DC transducer 10, supplies to charging with on terminal 8a, the 8b.Thus, portable telephone is charged.
If 23 conductings of push button normally opened contact then form the energising circuit between the output of DC-DC transducer 10 and the light-emitting diode 21 that emergency lighting is used, light-emitting diode 21 is lighted.If push button normally opened contact 23 disconnects, then the energising circuit between the output of DC-DC transducer 10 and the light-emitting diode 21 is blocked, and light-emitting diode 21 closes and goes out.
In addition, if 23 conductings of push button normally opened contact, then the voltage of secondary cell 3 is applied in the series circuit to resistance 31,32.At this moment, if the voltage of secondary cell 3 is being set more than the level, then the voltage by resistance 32 makes transistor 33 conductings.If transistor 33 conductings, then the collector potential of transistor 33 reduces, and transistor 26 is kept off-state.Like this, keep off-state by making transistor 26, even with 23 conductings of push button normally opened contact, the voltage level report is also kept the state that goes out that closes with light-emitting diode 24.Thus, report following situation, that is, the voltage of secondary cell 3 can carry out the charging of portable telephone for setting the above state of level.
When 23 conductings of push button normally opened contact, if reducing to, the voltage of secondary cell 3 is lower than the setting level, then transistor 33 is kept off-state.If transistor 33 disconnects, then the collector potential of transistor 33 uprises, transistor 26 conductings.If transistor 26 conductings then form the output of DC-DC transducer 10 and the energising circuit between the light-emitting diode 24, light-emitting diode 24 is lighted.Thus, report following situation, that is, the voltage of secondary cell 3 is to be lower than the state of setting level, can not carry out the reliable charging of portable telephone.
In addition, along with the conversion of DC-DC transducer 10, might change in the voltage of resistance 32.If the variation in voltage of resistance 32, then transistor 33 repeats conductings, disconnection, and it feeds through to the action of transistor 26 and repeats lighting with the pass of light-emitting diode 24 continually and go out.
But when the conducting of push button normally opened contact 23, the output voltage of DC-DC transducer 10 is applied in to capacitor 41, utilizes the voltage of this capacitor 41 to make transistor 43 conductings.If transistor 43 conductings, then the variation in voltage of the interlinkage of resistance 31,32 is absorbed by resistance 44,45 and transistor 43.Thus, the change of the voltage of resistance 32 can be suppressed, the unnecessary conducting of transistor 33, the repetition of disconnection can be avoided.Thus, can prevent that light-emitting diode 24 from repeating to light and close the undesirable condition that goes out continually.
As mentioned above, because the voltage that is provided with at secondary cell 3 is lower than the voltage decision circuitry 30 that under the situation of setting level light-emitting diode 24 is lighted, only when 23 conductings of push button normally opened contact, utilize the voltage of secondary cell 3 to make this voltage decision circuitry 30 actions, so under the situation that push button normally opened contact 23 disconnects, can not flow through the electric current of waste to voltage decision circuitry 30 from secondary cell 3.Thereby, can not consume the electric power of secondary cell 3 as far as possible and suitably be reported in the required electric power of charging that whether has stored portable telephone in the secondary cell 3.Owing to can suppress the power consumption of secondary cell 3, thus can with the valuable rechargeable energy assembled by solar cell 1 not lavishly, effectively utilize in the emergency lighting when the charging of portable telephone and the disaster.
Owing in the conversion and control of DC-DC transducer 10, adopt frequency modulation(FM) (PFM),, only under dropping to the situation of certain level, changes the output voltage of DC-DC transducer 10 so do not using under the situation of this solar energy type portable charger for a long time.Cooperate the conversion of this DC-DC transducer 10, secondary cell 3 discharges aperiodically.By this irregular discharge, can suppress at discharge capacity in seldom, to make secondary cell 3 activation with secondary cell 3, can postpone the deterioration of secondary cell 3.
If suppose in the conversion and control of DC-DC transducer 10, to adopt the situation of the wide modulation of pulse (PWM), then be maintained more than the 5V and repeat the conversion of DC-DC transducer 10 termly, so that the discharge time of secondary cell 3 becomes is many for output voltage with DC-DC transducer 10.In the case, though can make secondary cell 3 activation, the many undesirable conditions of discharge quantitative change of secondary cell 3 are arranged by discharge.
Other advantages of the present invention and change are conspicuous for those skilled in the art.Therefore, the present invention of broad sense is not limited to the details of above-mentioned detailed description and execution mode.Therefore, under situation about not breaking away from, can carry out various changes by the scope of appended claims and defined spirit of equivalent or purport of the present invention.
The application requires the priority of day the present patent application No.2005-317594 on October 31st, 2005, at this its all the elements is quoted.
Claims (3)
1, a kind of solar energy type portable charger is characterized in that, possesses:
Solar cell (1);
Secondary cell (3) utilizes the output of above-mentioned solar cell (1) to be recharged;
DC-DC transducer (10) is the direct voltage of specified level with the voltage transformation of above-mentioned secondary cell (3);
Charging is connected on the output of above-mentioned DC-DC transducer (10) with terminal (8a, 8b);
Energising control switch (26);
The push button normally opened contact (23) of self-return type;
Luminous element (24) is connected on the output of above-mentioned DC-DC transducer (10) with switch (26) and above-mentioned push button normally opened contact (23) via above-mentioned energising control;
Voltage decision circuitry (30), be connected with above-mentioned secondary cell (3) via above-mentioned push button normally opened contact (23), when this push button normally opened contact (23) conducting, move, be lower than at the voltage of above-mentioned secondary cell (3) under the situation of setting level above-mentioned energising control with switch (26) conducting.
2, solar energy type portable charger as claimed in claim 1 is characterized in that,
Above-mentioned energising control is the 1st transistor (26) that is plugged between collector electrode and the emitter in the energising circuit of above-mentioned luminous element (24) energising with switch (26);
Above-mentioned voltage decision circuitry (30) has:
The 1st resistance (31) that is connected with above-mentioned secondary cell (3) via above-mentioned push button normally opened contact (23) and the series circuit of the 2nd resistance (32);
The 2nd transistor (33), to be connected between base stage and the emitter on above-mentioned the 2nd resistance (32), and will be connected on the output of above-mentioned DC-DC transducer (10) via above-mentioned push button normally opened contact (23) between collector electrode and the emitter, the voltage that produces in above-mentioned the 2nd resistance (32) disconnects when being lower than the setting level for setting level conducting when above;
Capacitor (41) is connected via the output of above-mentioned push button normally opened contact (23) with above-mentioned DC-DC transducer (10);
Be connected the 3rd resistance (44) and the collector electrode of the 3rd transistor (43) and the series circuit between the emitter on the above-mentioned secondary cell (3) via above-mentioned push button normally opened contact (23);
To be connected on the above-mentioned capacitor (41) between the base stage of above-mentioned the 3rd transistor (43) and the emitter, and the interlinkage of above-mentioned the 1st resistance (31) and the 2nd resistance (32) is connected on the collector electrode of the 3rd transistor (43) via the 4th resistance (45).
3, solar energy type portable charger as claimed in claim 1 is characterized in that,
Also possess via above-mentioned push button normally opened contact (23) and be connected the luminous element (21) that the emergency lighting on the output of above-mentioned DC-DC transducer (10) is used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP317594/2005 | 2005-10-31 | ||
| JP2005317594A JP4034800B2 (en) | 2005-10-31 | 2005-10-31 | Solar cell charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960120A CN1960120A (en) | 2007-05-09 |
| CN100433501C true CN100433501C (en) | 2008-11-12 |
Family
ID=38071660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101266633A Expired - Fee Related CN100433501C (en) | 2005-10-31 | 2006-08-31 | Solar energy type portable charger |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4034800B2 (en) |
| KR (1) | KR100841135B1 (en) |
| CN (1) | CN100433501C (en) |
| TW (1) | TWI337793B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT509609B1 (en) * | 2010-04-28 | 2011-10-15 | Lunatone Ind Elektronik Gmbh | SOLAR OPERATED LED LIGHT |
| CN102468518A (en) * | 2010-11-17 | 2012-05-23 | 英业达股份有限公司 | Battery module and electronic device applying same |
| CN103267258A (en) * | 2013-05-23 | 2013-08-28 | 宁夏新航能源环境科技有限公司 | Solar lighting device and method |
| KR20190092203A (en) | 2018-01-29 | 2019-08-07 | 경문건 | Apparatus for autonomous wireless charging with high hardware and cost efficiency |
| WO2020130162A1 (en) | 2017-12-15 | 2020-06-25 | 경문건 | Autonomous wireless charging system and method based on power loss tracking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002238182A (en) * | 2001-02-07 | 2002-08-23 | Kaga Component Kk | Power supply using solar battery |
| US20030094931A1 (en) * | 2001-11-19 | 2003-05-22 | Renyolds Robert Lee | Micro-solar insolation circuit |
| JP2003209936A (en) * | 2002-01-15 | 2003-07-25 | Sanburijji:Kk | Charger for solar battery powered mobile device |
| CN1697282A (en) * | 2004-05-14 | 2005-11-16 | Nec东金株式会社 | Power source device and charge controlling method to be used in same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3070715B2 (en) * | 1993-08-05 | 2000-07-31 | 三菱電機株式会社 | Wireless switch |
| JPH117932A (en) | 1997-06-18 | 1999-01-12 | Hitachi Ltd | Secondary battery |
-
2005
- 2005-10-31 JP JP2005317594A patent/JP4034800B2/en not_active Expired - Fee Related
-
2006
- 2006-08-23 TW TW095130983A patent/TWI337793B/en not_active IP Right Cessation
- 2006-08-30 KR KR1020060082963A patent/KR100841135B1/en not_active IP Right Cessation
- 2006-08-31 CN CNB2006101266633A patent/CN100433501C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002238182A (en) * | 2001-02-07 | 2002-08-23 | Kaga Component Kk | Power supply using solar battery |
| US20030094931A1 (en) * | 2001-11-19 | 2003-05-22 | Renyolds Robert Lee | Micro-solar insolation circuit |
| JP2003209936A (en) * | 2002-01-15 | 2003-07-25 | Sanburijji:Kk | Charger for solar battery powered mobile device |
| CN1697282A (en) * | 2004-05-14 | 2005-11-16 | Nec东金株式会社 | Power source device and charge controlling method to be used in same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4034800B2 (en) | 2008-01-16 |
| JP2007124872A (en) | 2007-05-17 |
| KR20070046706A (en) | 2007-05-03 |
| TW200717966A (en) | 2007-05-01 |
| CN1960120A (en) | 2007-05-09 |
| KR100841135B1 (en) | 2008-06-24 |
| TWI337793B (en) | 2011-02-21 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20130831 |