CN201388073Y - Electronic photo frame charging single lithium ion battery - Google Patents
Electronic photo frame charging single lithium ion battery Download PDFInfo
- Publication number
- CN201388073Y CN201388073Y CN200920095961U CN200920095961U CN201388073Y CN 201388073 Y CN201388073 Y CN 201388073Y CN 200920095961 U CN200920095961 U CN 200920095961U CN 200920095961 U CN200920095961 U CN 200920095961U CN 201388073 Y CN201388073 Y CN 201388073Y
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- charging
- control
- photo frame
- battery
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Abstract
The utility model relates to an electronic photo frame charging single lithium ion battery, which comprises a circuit part and is characterized in that the circuit part is provided with a voltage select input module connected with a control IC, wherein the control IC is connected with a lithium battery respectively through a voltage induction/charging current control module, a charging circuit module and a temperature feedback module, and also connected with a charging state display module. The electronic photo frame has the charging voltage of 4.1-4.2V, can automatically detect the battery voltage to carry out charging control, can control the charging current through inductive resistance, and can carry out control through sensing the temperature of the battery. When being used, the circuit can be derived to other electronic photo frame types, need to be combined with external structure design, and have commonality for lithium ion batteries of 4.2V; especially for the charging mode of USB, battery charging can be carried out without the need of using external adapters, thus meeting the mobile charging requirement of the user and having the significance of function adding. In brief, the electronic photo frame has reasonable structure, obvious effect, convenient usage and wide application.
Description
Technical field
The utility model relates to a kind of digital photo frame that battery is charged, particularly a kind of digital photo frame that the single-unit lithium ion battery is charged.
Background technology
Popular digital photo frame receives increasing consumer's concern at present, particularly in recent years as the new lover of fashion, has begun progressively to popularize.Digital photo frame itself can be supported the broadcast of multiple audio/video file/picture file now, but continuous upgrading along with product, a lot of consumers wish to append the digital photo frame that mobile phone lithium ion battery charge function can be conveniently carried out in design, therefore existing digital photo frame product is appended and carry out the charging circuit design, a kind of digital photo frame that the single-unit lithium ion battery is charged is provided, and is one of these those skilled in the art project of carrying out scientific research and development.
The utility model content
The purpose of this utility model is to overcome above-mentioned technical deficiency part, for market provides a kind of digital photo frame that the single-unit lithium ion battery is charged simple in structure, reasonable in design.
The execution mode that the utility model adopted is as follows for achieving the above object: a kind of digital photo frame that the single-unit lithium ion battery is charged, comprise circuit part, it is characterized in that described circuit part is provided with voltage and selects input module to be connected with control IC, described control IC is connected with lithium battery by voltage induced/charging current control module, charging circuit module, Temperature Feedback module respectively, and control IC is connected with the charged state display module.
The beneficial effects of the utility model are:
(1) can select external adapter/USB interface to charge automatically by circuit design;
(2) at single-unit lithium ion battery (4.1V～4.2V) charge;
(3) adjust the current/voltage of charging by the height of judging outside input current;
(4) can pass through LED display power supply and charged state;
(5) battery is charged automatically;
(6) the charging voltage accuracy 1%.
This circuit can derive from other digital photo frame model once using, and need design in conjunction with external structure, and the lithium ion battery of 4.2V is had versatility; Particularly the charging modes of USB can carry out battery charge when not using external adapter, has satisfied user's mobile charging demand, has the meaning that function is appended.
In a word, the utility model reasonable in design, the effect highly significant, easy to use, be widely used.
Description of drawings
Fig. 1 is the utility model circuit module connection side block diagram;
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:
As shown in Figure 1, a kind of digital photo frame that the single-unit lithium ion battery is charged comprises circuit part, it is characterized in that described circuit part is provided with voltage and selects input module to be connected with control IC, when Vin_5V and USB_5V exist simultaneously, preferentially select the Vin power supply of charging; Described control IC is connected with lithium battery by voltage induced/charging current control module, charging circuit module, Temperature Feedback module respectively, and control IC is connected with the charged state display module.
As shown in Figure 2, this circuit connects as follows:
Described voltage selects input module to carry out outside input power supply: Vin_5V/USB_5V; External power source selects to carry out single power supply by control after being connected to Q1; 5V is through D2, C1, and C2 carries out filtering, for back level VCC and be connected to the pin one (VCC) of IC, connects into the pin 3 (STA) of IC by R11 and light-emitting diode D5 after the voltage stabilizing, and IC pin 3 (STA) also pass through D4 simultaneously, R8 ground connection (charging finish demonstration); 5V is through inserting IC pin 7 (SNS) behind the R1; Simultaneously back level feedback voltage BAT+ through the R2/R3 dividing potential drop after the control Q3 break-make break-make of controlling Q2 again make the R5 can be in parallel or disconnect with R1, realize the adjusting of SNS resistance is controlled; Control Q4 in described control IC pin 5 (CC) back controls charged state; IC pin 8 (BAT) is connected to battery+level (BAT+) of CN1; D3 connects the emitting stage of Q4 and the BAT+ of CN1, stops the backflow that BAT is disconnected; IC pin 6 (VCC1) series connection R9/R10 ground connection; The Temp feedback voltage of CN1 connects into IC pin two (TS) by the R9/R10 dividing potential drop; IC pin 4 (VSS) end ground connection connects.
The charging that AT1457 that adopts by control IC and outside relevant circuit can effectively be controlled battery/close/temperature detection.
Append applicable model: MONACO series:
Append design circuit main chip (control IC): AT1457 (MSOP-8).Each PIN connectivity port (pin) is defined as follows shown in the table:
| The pin sequence number | Definition | I/O | Describe |
| 1 | VCC | I | Operating voltage |
| 2 | TS | I | Temperature control sensor port |
| 3 | STA | O | The charged |
| 4 | VSS | -- | Ground connection |
| 5 | CC | O | The charging control port |
| 6 | VCC1 | I | Operating voltage |
| 7 | SNS | I | The induction by |
| 8 | BAT | I | The cell voltage sensor port |
The employing component parameter is as shown in the table:
| Components and parts | Parameter | Components and parts | Parameter |
| R1 | 1Ω | C1 | 10μf/10V |
| R2 | 47KΩ | C2 | 0.1μf/10V |
| R3 | 10KΩ | C3 | 10μf/10V |
| R4 | 0Ω | Q1 | IRF9630 |
| R5 | 0.2Ω | Q2 | A03401 |
| R6 | 100KΩ | Q3 | 2N2369A |
| R7 | 1KΩ | D1 | SCHOTTKY |
| R8 | 1KΩ | D2 | Voltage-stabiliser tube (4.2V) |
| R9 | 10KΩ | D3 | SS34 |
| R10 | 10KΩ | IC | AT1457 |
| R11 | 1KΩ | CN1 | 4PIN |
Operation principle:
When Vin_5V and USB_5V exist simultaneously, preferentially select the Vin power supply of charging, Q1P-channelMOSFET stops Vin to enter USB Port, prevents that by Schottky diode D1 the USB power supply is by the 1K resistance loss;
Charging selects three kinds of charging modes to carry out:
As VBat+ during, select low current to charge automatically less than 3V
When VBat+ carries out the H:500mA charging less than 3.8V (by Q2/Q3 control back) during greater than 3V;
When VBat+ carries out the H:100mA charging less than 4.1V (by Q2/Q3 control back) during greater than 3.8V;
R1/R5 is that electric current is selected SENSE resistance;
The territory system voltage of charging current High/Low is chosen in the control of R2/R3 resistance;
When external voltage Vin_5V USB_5V existed, the D5 lamp was bright, and display power supply is normal, and Star Pin high potential charges at this moment and carries out when monitoring Vcc＞Vbat, and the D4 lamp is bright, and power lights goes out;
In charging process, in order to prevent the too high or low excessively infringement that causes of battery temperature, set the cell-temperature monitoring system, (R9+R1 realizes temperature control to the NTC thermistor+bleeder circuit by inside battery;
Vlow is set to 30%Vin, and Vhigh is set to 60%Vin,
When Vtemp＜Vlow or Vtemp＞Vhigh 0.15s, charging will be stopped;
When Vlow＜Vtemp＜Vhigh 0.15s, charging will be continued;
Star Pin high potential when monitoring Vcc=Vbat, this moment, charging stopped, and the D4 lamp goes out, and the D5 lamp is bright, and charging finishes;
As above control has realized the charging process to rechargeable battery, and the electric current when effectively controlling voltage charging, and the state of temperature of monitoring battery carries out the state adjustment constantly.
The detailed description that the above-mentioned digital photo frame that the single-unit lithium ion battery is charged with reference to embodiment carries out; be illustrative rather than determinate; therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection range of the present utility model.
Claims (2)
1, a kind of digital photo frame that the single-unit lithium ion battery is charged, comprise circuit part, it is characterized in that described circuit part is provided with voltage and selects input module to be connected with control IC, described control IC is connected with lithium battery by voltage induced/charging current control module, charging circuit module, Temperature Feedback module respectively, and control IC is connected with the charged state display module.
2, the digital photo frame that the single-unit lithium ion battery is charged according to claim 1 is characterized in that described control IC model is AT1457.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095961U CN201388073Y (en) | 2009-03-20 | 2009-03-20 | Electronic photo frame charging single lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095961U CN201388073Y (en) | 2009-03-20 | 2009-03-20 | Electronic photo frame charging single lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388073Y true CN201388073Y (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920095961U Expired - Fee Related CN201388073Y (en) | 2009-03-20 | 2009-03-20 | Electronic photo frame charging single lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388073Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475052A (en) * | 2013-09-03 | 2013-12-25 | 周健 | Adapter and lithium battery compatible circuit used in handheld type X fluorescence spectrometer |
| CN106058959A (en) * | 2016-05-30 | 2016-10-26 | 乐视控股（北京）有限公司 | Charging line and charger |
-
2009
- 2009-03-20 CN CN200920095961U patent/CN201388073Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475052A (en) * | 2013-09-03 | 2013-12-25 | 周健 | Adapter and lithium battery compatible circuit used in handheld type X fluorescence spectrometer |
| CN106058959A (en) * | 2016-05-30 | 2016-10-26 | 乐视控股（北京）有限公司 | Charging line and charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN SANXING ELECTRONIC CO., LTD. Free format text: FORMER OWNER: SANSUNG ELECTRONIC DISPLAY CO., LTD., TIANJIN Effective date: 20111025 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111025 Address after: 300385 Micro Electronics Development Zone, Tianjin economic and Technological Development Zone, four Patentee after: Tianjin Sanxing Electronic Co., Ltd. Address before: 300385 micro industry road, Tianjin economic and Technological Development Zone, four Patentee before: Sansung Electronic Display Co., Ltd., Tianjin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20130320 |