CN204205656U - No-voltage works the battery charger filled - Google Patents
No-voltage works the battery charger filled Download PDFInfo
- Publication number
- CN204205656U CN204205656U CN201420671452.8U CN201420671452U CN204205656U CN 204205656 U CN204205656 U CN 204205656U CN 201420671452 U CN201420671452 U CN 201420671452U CN 204205656 U CN204205656 U CN 204205656U
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- Prior art keywords
- voltage
- electrically connected
- module
- battery
- circuit module
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of no-voltage and work the battery charger filled, it comprises control circuit module, cell voltage detecting module, voltage bias module and boostrap circuit module, control circuit module and cell voltage detecting module and voltage bias module are electrically connected, cell voltage detecting module, voltage bias module and boostrap circuit module are electrically connected successively, cell voltage detecting module one end correspondence is electrically connected battery interface one end, and boostrap circuit module one end correspondence is electrically connected the battery interface other end.The utility model is by being electrically connected cell voltage detecting module, voltage bias module and boostrap circuit module successively, utilize the first voltage stabilizing didoe to detect the output voltage of battery, and coordinate voltage bias module to carry out the conducting state of control switch triode, and then utilize the boosting of boostrap circuit module, still can allow the power pin energy normal power supply of primary control IC when making the output voltage of battery be in zero volt or low-voltage, namely reach no-voltage and worked the object of filling.
Description
Technical field
The utility model relates to a kind of charger circuit technical field, especially relates to a kind of no-voltage and works the battery charger filled.
Background technology
Due to the chemical characteristic of lithium ion battery, in normal use procedure, the chemical reaction that electric energy and chemical energy transform mutually is carried out in its inside.When battery over-discharge when or at battery in the untapped situation of long storage time, cell voltage there will be too low or be zero phenomenon.
The many employings of existing small charger former limit primary control IC makes, but most primary control IC at cell output voltage lower or be zero time, the cisco unity malfunction because the input voltage VCC being supplied to the power pin of control IC is too low.
At present, market has the lithium battery charger of many uses, this kind of charger generally uses constant current constant voltage pattern to charge, but when cell voltage is very low, such as: during zero volt, charger just can not rise and fill, and causes very large trouble to user.
Utility model content
Based on this, be necessary, for above-mentioned background technology Problems existing, to provide a kind of no-voltage to work the battery charger filled, solve the problem that available circuit cannot charge normal when cell output voltage is zero volt, achieve the function of zero volt charging.
For achieving the above object, the utility model discloses a kind of no-voltage and work the battery charger filled, it comprises control circuit module, cell voltage detecting module, voltage bias module and boostrap circuit module, described control circuit module and cell voltage detecting module and voltage bias module are electrically connected, described cell voltage detecting module, voltage bias module and boostrap circuit module are electrically connected successively, described cell voltage detecting module one end correspondence is electrically connected battery interface one end, and described boostrap circuit module one end correspondence is electrically connected the battery interface other end.
Wherein in an embodiment, described voltage bias module comprises the first divider resistance and the second divider resistance that are connected in series, described boostrap circuit module comprises switch triode, the 3rd resistance and the 3rd diode, the grid of described switch triode is electrically connected between described first divider resistance and the second divider resistance, source electrode and second divider resistance one end of described switch triode are electrically connected, and the drain electrode correspondence of described switch triode connects battery interface one end; Described 3rd resistance and the 3rd Diode series connect, and described 3rd resistance one end correspondence is electrically connected the source electrode of described switch triode, and described 3rd diode one end correspondence is electrically connected the drain electrode of described switch triode.
Wherein in an embodiment, the cathode terminal of described 3rd resistance one end and the 3rd diode is electrically connected, and the anode tap correspondence of described 3rd diode is electrically connected the drain electrode of described switch triode.
Wherein in an embodiment, the two ends of described second divider resistance are electrically connected with the 4th voltage stabilizing didoe respectively, the grid of the corresponding connecting valve triode in one end of described 4th voltage stabilizing didoe.
Wherein in an embodiment, described cell voltage detecting module is the first voltage stabilizing didoe, the cathode terminal correspondence of described first voltage stabilizing didoe is electrically connected the positive input terminal of battery interface, the anode tap of described first divider resistance one end and described first voltage stabilizing didoe is electrically connected, described second divider resistance one end ground connection.
Wherein in an embodiment, described control circuit module comprises primary control circuit and secondary winding circuit, described primary control circuit is provided with primary control IC, described secondary winding circuit and cell voltage detecting module and voltage bias module are electrically connected, and described secondary winding circuit is used for the output voltage of battery to carry out changing the power pin exporting to primary control IC again.
In sum, the utility model no-voltage works the battery charger filled and passes through be electrically connected cell voltage detecting module, voltage bias module and boostrap circuit module successively, utilize the first voltage stabilizing didoe to detect the output voltage of battery, and coordinate voltage bias module to carry out the conducting state of control switch triode, and then utilize the boosting of boostrap circuit module, still can allow the power pin energy normal power supply of primary control IC when making the output voltage of battery be in zero volt or low-voltage, namely reach no-voltage and worked the object of filling.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams that the utility model no-voltage works a kind of embodiment of the battery charger filled;
Fig. 2 works the circuit diagram of the battery charger filled for the no-voltage of the utility model shown in Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the utility model no-voltage works the battery charger filled and comprises control circuit module 100, cell voltage detecting module 200, voltage bias module 300 and boostrap circuit module 400, described control circuit module 100 is electrically connected with cell voltage detecting module 200 and voltage bias module 300, described control circuit module 100 comprises primary control circuit 110 and secondary winding circuit 120, described primary control circuit 110 is provided with primary control IC111, described secondary winding circuit 120 is electrically connected with cell voltage detecting module 200 and voltage bias module 300, described secondary winding circuit 120 is in order to be converted to the output voltage of battery the power pin that high voltage exports to primary control IC111, to be supplied to described primary control IC111 operating voltage.
Described cell voltage detecting module 200, voltage bias module 300 and boostrap circuit module 400 are electrically connected successively, described cell voltage detecting module 200 one end correspondence is electrically connected battery interface 500 one end, and described boostrap circuit module 400 one end correspondence is electrically connected battery interface 500 other end.
Particularly, described cell voltage detecting module 200 is the first voltage stabilizing didoe Z1, and the cathode terminal correspondence of described first voltage stabilizing didoe Z1 is electrically connected the positive input terminal of battery interface 500; Described voltage bias module 300 comprises the first divider resistance R18 and the second divider resistance R19, described first divider resistance R18 and the second divider resistance R19 is connected in series, the anode tap of described first divider resistance R18 one end and described first voltage stabilizing didoe Z1 is electrically connected, described second divider resistance R19 one end ground connection.
Described boostrap circuit module 400 comprises switch triode Q2, the 3rd resistance R17 and the 3rd diode D7, the grid of described switch triode Q2 is electrically connected between described first divider resistance R18 and the second divider resistance R19, the source electrode of described switch triode Q2 and one end of the second divider resistance R19 ground connection are electrically connected, and the drain electrode correspondence of described switch triode Q2 connects battery interface 500 one end; Described 3rd resistance R17 and the 3rd diode D7 is connected in series, and described 3rd resistance R17 one end correspondence is electrically connected the source electrode of described switch triode Q2, and described 3rd diode D7 one end correspondence is electrically connected the drain electrode of described switch triode Q2; Particularly, the cathode terminal of described 3rd resistance R17 one end and the 3rd diode D7 is electrically connected, and the anode tap correspondence of described 3rd diode D7 is electrically connected the drain electrode of described switch triode Q2.
Wherein in an embodiment; the two ends of described second divider resistance R19 are electrically connected with the 4th voltage stabilizing didoe Z2 respectively; the grid of one end corresponding connecting valve triode Q2 of described 4th voltage stabilizing didoe Z2; in order to protect the grid of switch triode Q2, prevent the excessive damage causing switch triode Q2 of the voltage of the gate terminal of switch triode Q2.
During utility model works, cell voltage detecting module 200 is in order to detect the output voltage of battery, when voltage of voltage regulation higher than the first voltage stabilizing didoe Z1 of the output voltage Uba of battery, first voltage stabilizing didoe Z1 punctures, the grid of switch triode Q2 is owing to being connected between the first divider resistance R18 and the second divider resistance R19, switch triode Q2 conducting, now, not conducting after 3rd resistance R17 and the 3rd diode D7 short circuit, the output voltage Uba of the output voltage Uout=battery of charger; When conducting voltage lower than the first voltage stabilizing didoe Z1 of the output voltage Uba of battery, switch triode Q2 is in not on-state, now the 3rd resistance R17 and the 3rd diode D7 forms loop conducting via control circuit module 100, now, the output voltage Uout=Iout*R17+Vd7+Uba of charger, wherein, Uba is the output voltage of battery, Iout is charging current, and Vd7 is the conduction voltage drop of the 3rd diode D7.
When the 3rd resistance R17 and the 3rd diode D7 conducting, when the output voltage of battery is zero, the output voltage Uout=Iout*R17+Vd7 of charger, as long as the i.e. resistance of Rational choice the 3rd resistance R17 and the conduction voltage drop of the 3rd diode D7, when ensureing the output voltage Uout of charger, namely the power pin energy normal power supply of primary control IC111 has been reached no-voltage and has been worked the object of filling.
In sum, the utility model no-voltage works the battery charger filled and passes through be electrically connected cell voltage detecting module 200, voltage bias module 300 and boostrap circuit module 400 successively, utilize the first voltage stabilizing didoe Z1 to detect the output voltage of battery, and coordinate voltage bias module 300 to carry out the conducting state of control switch triode Q2, and then utilize the boosting of boostrap circuit module 400, still can allow the power pin energy normal power supply of primary control IC111 when making the output voltage of battery be in zero volt or low-voltage, namely reach no-voltage and worked the object of filling.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. the no-voltage battery charger that rises to fill, it is characterized in that: comprise control circuit module (100), cell voltage detecting module (200), voltage bias module (300) and boostrap circuit module (400), described control circuit module (100) is electrically connected with cell voltage detecting module (200) and voltage bias module (300), described cell voltage detecting module (200), voltage bias module (300) and boostrap circuit module (400) are electrically connected successively, described cell voltage detecting module (200) one end correspondence is electrically connected battery interface (500) one end, described boostrap circuit module (400) one end correspondence is electrically connected battery interface (500) other end.
2. no-voltage according to claim 1 works the battery charger filled, it is characterized in that: described voltage bias module (300) comprises the first divider resistance R18 and the second divider resistance R19 that are connected in series, described boostrap circuit module (400) comprises switch triode Q2, 3rd resistance R17 and the 3rd diode D7, the grid of described switch triode Q2 is electrically connected between described first divider resistance R18 and the second divider resistance R19, source electrode and second divider resistance R19 one end of described switch triode Q2 are electrically connected, the drain electrode correspondence of described switch triode Q2 connects battery interface (500) one end, described 3rd resistance R17 and the 3rd diode D7 is connected in series, and described 3rd resistance R17 one end correspondence is electrically connected the source electrode of described switch triode Q2, and described 3rd diode D7 one end correspondence is electrically connected the drain electrode of described switch triode Q2.
3. no-voltage according to claim 2 works the battery charger filled, it is characterized in that: the cathode terminal of described 3rd resistance R17 one end and the 3rd diode D7 is electrically connected, the anode tap correspondence of described 3rd diode D7 is electrically connected the drain electrode of described switch triode Q2.
4. no-voltage according to claim 2 works the battery charger filled, it is characterized in that: the two ends of described second divider resistance R19 are electrically connected with the 4th voltage stabilizing didoe Z2 respectively, the grid of one end corresponding connecting valve triode Q2 of described 4th voltage stabilizing didoe Z2.
5. no-voltage according to claim 2 works the battery charger filled, it is characterized in that: described cell voltage detecting module (200) is the first voltage stabilizing didoe Z1, the cathode terminal correspondence of described first voltage stabilizing didoe Z1 is electrically connected the positive input terminal of battery interface (500), the anode tap of described first divider resistance R18 one end and described first voltage stabilizing didoe Z1 is electrically connected, described second divider resistance R19 one end ground connection.
6. the no-voltage according to any one of Claims 1 to 5 works the battery charger filled, it is characterized in that: described control circuit module (100) comprises primary control circuit (110) and secondary winding circuit (120), described primary control circuit (110) is provided with primary control IC (111), described secondary winding circuit (120) is electrically connected with cell voltage detecting module (200) and voltage bias module (300), described secondary winding circuit (120) changes for being carried out by the output voltage of battery the power pin exporting to primary control IC (111) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671452.8U CN204205656U (en) | 2014-11-10 | 2014-11-10 | No-voltage works the battery charger filled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671452.8U CN204205656U (en) | 2014-11-10 | 2014-11-10 | No-voltage works the battery charger filled |
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| Publication Number | Publication Date |
|---|---|
| CN204205656U true CN204205656U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420671452.8U Expired - Fee Related CN204205656U (en) | 2014-11-10 | 2014-11-10 | No-voltage works the battery charger filled |
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| CN (1) | CN204205656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808784A (en) * | 2018-06-26 | 2018-11-13 | 南京微盟电子有限公司 | A kind of zero volt battery charger of protection chip for the charging of binodal lithium battery |
| CN109347174A (en) * | 2018-11-23 | 2019-02-15 | 深圳众鑫凯科技有限公司 | A kind of battery zero volt charging circuit and its control method |
-
2014
- 2014-11-10 CN CN201420671452.8U patent/CN204205656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808784A (en) * | 2018-06-26 | 2018-11-13 | 南京微盟电子有限公司 | A kind of zero volt battery charger of protection chip for the charging of binodal lithium battery |
| CN109347174A (en) * | 2018-11-23 | 2019-02-15 | 深圳众鑫凯科技有限公司 | A kind of battery zero volt charging circuit and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |