CN204947631U - Charger - Google Patents
Charger Download PDFInfo
- Publication number
- CN204947631U CN204947631U CN201520558048.4U CN201520558048U CN204947631U CN 204947631 U CN204947631 U CN 204947631U CN 201520558048 U CN201520558048 U CN 201520558048U CN 204947631 U CN204947631 U CN 204947631U
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- voltage stabilizing
- limiting
- charger
- 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
Links
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
<b> the utility model discloses a kind of </b><bGreatT.Gre aT.GT charger </b><bGreatT.Gre aT.GT, </b><bGreatT.Gre aT.GT forms by for </b><bGreatT.Gre aT.GT electricity </b><bGreatT.Gre aT.GT power supply and charging circuit, power supply is 4.5V battery case or 5V voltage stabilized source for handset or laminated cell, charging circuit is by mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, export female seat or output plug composition, and order electrical connection, mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, output female seat or output plug are welded on a slice circuit board jointly, voltage stabilizing circuit and current-limiting circuit use one or two diode forward to connect, series limiting resistor composition again, or current-limiting circuit and voltage stabilizing circuit use current-limiting resistance current limliting successively, again at positive pole, voltage stabilizing didoe voltage stabilizing is incorporated between negative pole, the current-limiting resistance of charging circuit is more than or equal to zero ohm.That a kind of application is convenient, the charger of compact.</b><b />
Description
(1) technical field
the utility model relates to a kind of charger, is that a kind of application is convenient, the charger of compact.
(2) background technology
present 3.7V lithium battery charger uses special charging circuit to control charging current and voltage, has baroque shortcoming.
(3) summary of the invention
in view of the deficiency of this type of charger, the 3.7V lithium battery charger that the utility model provides a kind of structure simple, cheap.
the utility model solves the technical scheme that its technical problem adopts: charger, be made up of power supply and charging circuit, power supply is 4.5V battery case or 5V voltage stabilized source for handset or laminated cell, charging circuit is by mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, export female seat or output plug composition, and order electrical connection, mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, output female seat or output plug are welded on a slice circuit board jointly, voltage stabilizing circuit and current-limiting circuit use one or two diode forward to connect, series limiting resistor composition again, or current-limiting circuit and voltage stabilizing circuit use current-limiting resistance current limliting successively, again at positive pole, voltage stabilizing didoe voltage stabilizing is incorporated between negative pole, the current-limiting resistance of charging circuit is more than or equal to zero ohm.
the operation principle of this charger is very simple, and 5V voltage stabilized source for handset is powered, and connect through a diode forward, step-down about 0.8V becomes about 4.2V, then through current-limiting resistance current limliting for charged lithium cells provides the charging voltage of the highest 4.2V.
the beneficial effects of the utility model are, the 3.7V lithium battery charger that the utility model provides a kind of structure simple, cheap.
(4) accompanying drawing explanation
fig. 1 is the utility model charger schematic diagram in kind.
in figure, 1 ﹒ mobile phone tail interface, 2 ﹒ export female seat.
(5) embodiment
with Fig. 1 example, mobile phone tail interface, a diode forward connects, again through current-limiting resistance current limliting, export through exporting female seat, mobile phone tail interface, diode-, current-limiting resistance, output female seat be welded on a slice circuit board jointly, this circuit is extremely suitable for the charging of the lithium battery of 300mh, circuit is simple, with low cost, compact.
Claims (2)
1. a charger, it is characterized in that: charger, be made up of power supply and charging circuit, power supply is 4.5V battery case or 5V voltage stabilized source for handset or laminated cell, charging circuit, by mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, exports female seat or output plug forms, and order electrical connection, mobile phone tail interface, voltage stabilizing circuit and current-limiting circuit, exports female seat or output plug is welded on a slice circuit board jointly.
2. charger according to claim 1, it is characterized in that: voltage stabilizing circuit and current-limiting circuit use one or two diode forward to connect, series limiting resistor composition again, or current-limiting circuit and voltage stabilizing circuit use current-limiting resistance current limliting successively, between positive pole, negative pole, be incorporated to voltage stabilizing didoe voltage stabilizing again, the current-limiting resistance of charging circuit is more than or equal to zero ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558048.4U CN204947631U (en) | 2015-07-29 | 2015-07-29 | Charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558048.4U CN204947631U (en) | 2015-07-29 | 2015-07-29 | Charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204947631U true CN204947631U (en) | 2016-01-06 |
Family
ID=55015020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520558048.4U Expired - Fee Related CN204947631U (en) | 2015-07-29 | 2015-07-29 | Charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204947631U (en) |
-
2015
- 2015-07-29 CN CN201520558048.4U patent/CN204947631U/en not_active Expired - Fee Related
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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: 20160106 Termination date: 20180729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |