CN204424961U - A kind of efficient USB walkie-talkie group charge protector - Google Patents
A kind of efficient USB walkie-talkie group charge protector Download PDFInfo
- Publication number
- CN204424961U CN204424961U CN201520064044.0U CN201520064044U CN204424961U CN 204424961 U CN204424961 U CN 204424961U CN 201520064044 U CN201520064044 U CN 201520064044U CN 204424961 U CN204424961 U CN 204424961U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- pin
- resistance
- semiconductor
- oxide
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of efficient USB walkie-talkie group charge protector, comprise filter circuit, voltage boosting and stabilizing circuit, charge protector and charging indication, described filter circuit comprises electric capacity C1 and electric capacity C2, described voltage boosting and stabilizing circuit comprises boost chip U1, inductance L 1, resistance R1, resistance R2, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, diode D1 and electric capacity C3 and electric capacity C4, described charge protector comprises IC U2, resistance R3, resistance R5, electric capacity C5 and diode D2, electric current inputs through USB input port, and with electric capacity C1, electric capacity C2, one end of inductance L 1 and the 2nd of boost chip U1 the, 3 pin connect.The source of stable pressure that charger, portable power source or 5V/1A that the utility model can utilize USB, vehicle-mounted USB port to export export to walkie-talkie group (containing 7.4V and more than) charging, charging fast, safety and stability.
Description
Technical field
The utility model relates to a kind of efficient USB walkie-talkie group charge protector.
Background technology
Along with now social progress, intercom has also started to become indispensable special communication instrument in a few thing, but its charging modes adopts single intercom base charger.But along with the mobility of now work, base charger just shows its weak point sometimes.For example when not having 220V/110V alternating current at one's side, and when walkie-talkie group needs charging, at this moment we just can only select to change and be full of electric walkie-talkie group.
Summary of the invention
Technical problem to be solved in the utility model be to provide a kind of utilize USB, vehicle-mounted USB port to export charger, portable power source or 5V/1A export source of stable pressure to walkie-talkie group (containing 7.4V and more than) charging; charging is quick, the efficient USB walkie-talkie group charge protector of safety and stability.
The utility model is achieved through the following technical solutions: a kind of efficient USB walkie-talkie group charge protector, comprise filter circuit, voltage boosting and stabilizing circuit, charge protector and charging indication, described filter circuit comprises electric capacity C1 and electric capacity C2, described voltage boosting and stabilizing circuit comprises boost chip U1, inductance L 1, resistance R1, resistance R2, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, diode D1 and electric capacity C3 and electric capacity C4, described charge protector comprises IC U2, resistance R3, resistance R5, electric capacity C5 and diode D2, electric current inputs through USB input port, and with electric capacity C1, electric capacity C2, one end of inductance L 1 and the 2nd of boost chip U1 the, 3 pin connect, metal-oxide-semiconductor Q1, 1st pin of metal-oxide-semiconductor Q2 connects with the 5th pin of boost chip U1, metal-oxide-semiconductor Q1, 2nd pin of metal-oxide-semiconductor Q2 connect with the 4th pin of metal-oxide-semiconductor U1 and with electric capacity C1, the other end of electric capacity C2 receives GND mutually.
As preferred technical scheme, the other end of described diode D1 connects with one end of resistance R2, R3, R4, electric capacity C3, electric capacity C4 and connects with the 8th pin of IC U2, the other end of resistance R2 connects with the 1st pin of one end of resistance R1 and boost chip U1, and the other end of resistance R1 is connected with GND.
As preferred technical scheme, one end of described resistance R5 is connected with the 2nd pin of IC U2, and the 3rd pin of the other end and IC U2 is connected to GND.
As preferred technical scheme, the other end of described resistance R3 is connected with the 2nd pin of the 6th pin of IC U2 and metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 respectively, 1st pin of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 is connected with the 5th pin of U2,3rd pin of Q3, Q4 is connected with one end of D2, the other end of D2 is connected with the 4th pin of ICU2 and electric capacity C5 respectively, the other end of resistance R4 connects with the anode of LED, and the negative pole of LED separately with the 1st of IC U2,7 pin are connected.
The beneficial effects of the utility model are: the source of stable pressure that charger, portable power source or 5V/1A that the utility model can utilize USB, vehicle-mounted USB port to export export to walkie-talkie group (containing 7.4V and more than) charging, charging fast, safety and stability.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only case study on implementation more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit structure diagram of the present utility model.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, one of the present utility model efficient USB walkie-talkie group charge protector, comprise filter circuit, voltage boosting and stabilizing circuit, charge protector and charging indication, described filter circuit comprises electric capacity C1 and electric capacity C2, described voltage boosting and stabilizing circuit comprises boost chip U1, inductance L 1, resistance R1, resistance R2, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, diode D1 and electric capacity C3 and electric capacity C4, described charge protector comprises IC U2, resistance R3, resistance R5, electric capacity C5 and diode D2, electric current inputs through USB input port, and with electric capacity C1, electric capacity C2, one end of inductance L 1 and the 2nd of boost chip U1 the, 3 pin connect, metal-oxide-semiconductor Q1, 1st pin of metal-oxide-semiconductor Q2 connects with the 5th pin of boost chip U1, metal-oxide-semiconductor Q1, 2nd pin of metal-oxide-semiconductor Q2 connect with the 4th pin of metal-oxide-semiconductor U1 and with electric capacity C1, the other end of electric capacity C2 receives GND mutually.
As preferred technical scheme, the other end of described diode D1 connects with one end of resistance R2, R3, R4, electric capacity C3, electric capacity C4 and connects with the 8th pin of IC U2, the other end of resistance R2 connects with the 1st pin of one end of resistance R1 and boost chip U1, and the other end of resistance R1 is connected with GND.
As preferred technical scheme, one end of described resistance R5 is connected with the 2nd pin of IC U2, and the 3rd pin of the other end and IC U2 is connected to GND.
As preferred technical scheme, the other end of described resistance R3 is connected with the 2nd pin of the 6th pin of IC U2 and metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 respectively, 1st pin of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 is connected with the 5th pin of U2,3rd pin of Q3, Q4 is connected with one end of D2, the other end of D2 is connected with the 4th pin of ICU2 and electric capacity C5 respectively, the other end of resistance R4 connects with the anode of LED, and the negative pole of LED respectively with the 1st of IC U2,7 pin are connected.
Operation principle is: the direct current of portable power source or 5V/1A powers to after electric capacity C1 and C2 filtering U1 and inductance, U1 produces a PWM square wave by metal-oxide-semiconductor conducting and shutoff, at MOS period of contact inductive energy storage, when MOS blocking interval inductive discharge and by powering load after diode and capacitor filtering after superposing with supply voltage, resistance R1 and R2 series connection provides feedback voltage to be controlled the shutoff of metal-oxide-semiconductor to U1, U1 controlled the size of output voltage and larger electric current by the output of feedback voltage adjustment PWM.6th pin of U2 is sampled by one end of R5 and the shutoff controlling metal-oxide-semiconductor Q3, Q4 realizes programmable charge current with closed, and the on off state of U2 the 5th foot control metal-oxide-semiconductor realizes the control of charging current, and U2 the 4th pin realizes stable voltage and the output of electric current.When U2 connects load battery underfill electricity, when red green light goes out, and when battery is full of, green light red light goes out.By the work of the change control U2 of detected temperatures whether U2 the 2nd pin connects 10K NTC resistance, connects with ground.The 1st pin output low level LED green light when not connecting load battery, 7 pin export low and high level by the alternately flicker of LED red light.
The beneficial effects of the utility model are: the source of stable pressure that charger, portable power source or 5V/1A that the utility model can utilize USB, vehicle-mounted USB port to export export to walkie-talkie group (containing 7.4V and more than) charging, charging fast, safety and stability.
The above, be only embodiment of the present utility model, but protection range of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection range of the present utility model.Therefore, the protection range that protection range of the present utility model should limit with claims is as the criterion.
Claims (4)
1. an efficient USB walkie-talkie group charge protector, it is characterized in that: comprise filter circuit, voltage boosting and stabilizing circuit, charge protector and charging indication, described filter circuit comprises electric capacity C1 and electric capacity C2, described voltage boosting and stabilizing circuit comprises boost chip U1, inductance L 1, resistance R1, resistance R2, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, diode D1 and electric capacity C3 and electric capacity C4, described charge protector comprises IC U2, resistance R3, resistance R5, electric capacity C5 and diode D2, electric current inputs through USB input port, and with electric capacity C1, electric capacity C2, one end of inductance L 1 and the 2nd of boost chip U1 the, 3 pin connect, metal-oxide-semiconductor Q1, 1st pin of metal-oxide-semiconductor Q2 connects with the 5th pin of boost chip U1, metal-oxide-semiconductor Q1, 2nd pin of metal-oxide-semiconductor Q2 connect with the 4th pin of metal-oxide-semiconductor U1 and with electric capacity C1, the other end of electric capacity C2 receives GND mutually.
2. efficient USB walkie-talkie group charge protector according to claim 1; it is characterized in that: the other end of described diode D1 connects with one end of resistance R2, R3, R4, electric capacity C3, electric capacity C4 and connects with the 8th pin of IC U2; the other end of resistance R2 connects with the 1st pin of one end of resistance R1 and boost chip U1, and the other end of resistance R1 is connected with GND.
3. efficient USB walkie-talkie group charge protector according to claim 1, it is characterized in that: one end of described resistance R5 is connected with the 2nd pin of IC U2, the 3rd pin of the other end and IC U2 is connected to GND.
4. efficient USB walkie-talkie group charge protector according to claim 1; it is characterized in that: the other end of described resistance R3 is connected with the 2nd pin of the 6th pin of IC U2 and metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 respectively; 1st pin of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 is connected with the 5th pin of U2; 3rd pin of Q3, Q4 is connected with one end of D2; the other end of D2 is connected with the 4th pin of IC U2 and electric capacity C5 respectively; the other end of resistance R4 connects with the anode of LED, and the negative pole of LED separately with the 1st of IC U2,7 pin are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064044.0U CN204424961U (en) | 2015-01-29 | 2015-01-29 | A kind of efficient USB walkie-talkie group charge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064044.0U CN204424961U (en) | 2015-01-29 | 2015-01-29 | A kind of efficient USB walkie-talkie group charge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204424961U true CN204424961U (en) | 2015-06-24 |
Family
ID=53475290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520064044.0U Expired - Fee Related CN204424961U (en) | 2015-01-29 | 2015-01-29 | A kind of efficient USB walkie-talkie group charge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204424961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711236A (en) * | 2020-06-03 | 2020-09-25 | 上海艾可慕通讯科技有限公司 | Charging system and charging method of talkback battery pack |
-
2015
- 2015-01-29 CN CN201520064044.0U patent/CN204424961U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711236A (en) * | 2020-06-03 | 2020-09-25 | 上海艾可慕通讯科技有限公司 | Charging system and charging method of talkback battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204190424U (en) | A kind of charge-discharge protection circuit and charge-discharge system | |
| CN104079044B (en) | A kind of charger circuit of multivoltage compatibility | |
| CN204424961U (en) | A kind of efficient USB walkie-talkie group charge protector | |
| CN208707349U (en) | A kind of switched charge chip and electronic equipment | |
| CN204349545U (en) | Quick charge portable power source | |
| CN204631668U (en) | Constant current regulated power supply circuit | |
| CN203850891U (en) | Mobile equipment field charging circuit | |
| CN104080224A (en) | Power supply circuit and lamp | |
| CN205249168U (en) | Light -operated switch circuit | |
| CN104092263B (en) | Multifunctional charger circuit | |
| CN206180670U (en) | Constant flow source charging circuit for electric bicycle | |
| CN204391867U (en) | Lead-acid battery quick charge control circuit | |
| CN205051406U (en) | Lithium batteries control circuit | |
| CN205453219U (en) | Full -automatic intelligent battery charger | |
| CN203014466U (en) | A lithium battery charging circuit module | |
| CN106487076A (en) | A kind of battery charger for mobile phone circuit | |
| CN203967802U (en) | Multifunctional charger circuit | |
| CN204068346U (en) | Solar recharging bag | |
| CN204465110U (en) | Quick charger circuit | |
| CN206293931U (en) | A kind of battery charger for mobile phone circuit | |
| CN203813471U (en) | Lithium battery power supply management system | |
| CN201821539U (en) | Lamp switching circuit of battery charger | |
| CN109066876A (en) | A kind of switched charge chip and electronic equipment | |
| CN203984065U (en) | A kind of Intelligent lithium battery charger | |
| CN104079053B (en) | Charger feedback circuit |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200129 |