CN203879778U - Three-segment type charger heat radiation control circuit - Google Patents
Three-segment type charger heat radiation control circuit Download PDFInfo
- Publication number
- CN203879778U CN203879778U CN201420211867.7U CN201420211867U CN203879778U CN 203879778 U CN203879778 U CN 203879778U CN 201420211867 U CN201420211867 U CN 201420211867U CN 203879778 U CN203879778 U CN 203879778U
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- CN
- China
- Prior art keywords
- pin
- operational amplifier
- control circuit
- heat radiation
- charger
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- 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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to the technical field of chargers, in particular to a three-segment type charger heat radiation control circuit. The three-segment type charger heat radiation control circuit comprises an operational amplifier (U4B), a fifth pin of the operational amplifier (U4B) is connected with a ninth capacitor (C9) and a twenty-third resistor (R23) in parallel, a sixth pin of the operational amplifier (U4B) is connected to a current detection circuit through a nineteenth resistor (R19), a seventh pin of the operational amplifier (U4B) is connected to a base electrode of a triode (Q3) through a thirty-third resistor (R33), an eleventh capacitor (11) is connected between the seventh pin and the sixth pin of the operational amplifier (U4B) in parallel, a collector electrode of the triode (Q3) is connected to a first pin of a fan (JX2), and a second pin of the fan (JX2) is connected with a power source through a twenty-eighth resistor (R28). Charging currents are detected, and the operational amplifier (U4B) is made to output high levels or low levels to control the fan to operate.
Description
Technical field
The utility model relates to charger technical field, is specifically related to a kind of three-step charger radiating control circuit.
Background technique
Charger is commonly referred to as a kind of equipment that Ac is converted to low-voltage DC, and charger is of many uses in every field, is particularly widely used in the common electrical equipment of mobile phone, camera, electric motor car etc. at sphere of life.Charger is to adopt power electronics semiconductor device, and voltage and the changeless Ac of frequency are transformed to galvanic a kind of static ac dc converter device, and taking storage battery as working power or the electricity consumption occasion of standby power supply, charger is with a wide range of applications.
Charger has many types, as the test of lead acid batteries charger, valve-control sealed lead acid battery and monitoring, electricity charger for Ni-Cd battery, nickel-metal hydride battery charger, charger for lithium ion battery, portable electric appts charger for lithium ion battery, lithium ionic battery protection circuit charger, electromobile battery charger, Che Chong etc.
At present the most frequently used is lead acid batteries charger, lead acid batteries charger uses the most extensive in electric motor car, current electric motor car uses lead-acid battery mostly, the working life of electromobile battery is not long at present, main cause is that the duration of charge is oversize, cause cell degradation, Security is not high.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of simple and practical, easy to maintenance three-step charger radiating control circuit.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of three-step charger radiating control circuit, comprise an operational amplifier U4B, on the 5th pin of described operational amplifier U4B, be parallel with the 9th capacitor C the 9 and the 23 resistance R 23, the 6th pin of described operational amplifier U4B is connected to current detection circuit through the 19 resistance R 19, the 7th pin of described operational amplifier U4B is connected to the base stage of triode Q3 through the 33 resistance R 33, between the 7th pin of described operational amplifier U4B and the 6th pin, be parallel with the 11 capacitor C 11, the collector electrode of described triode Q3 is connected to the 1st pin of blower fan JX2, the 2nd pin of described blower fan JX2 connects power supply through the 28 resistance R 28, by detecting charging current, make operational amplifier U4B output high level or low level control the running of blower fan.
The beneficial effects of the utility model are: the present invention increases charger circuit radiating structure, by detecting charging current, make operational amplifier U4B output high level or low level control the running of blower fan, make in charging process more stablely, extend charger working life.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of three-step charger radiating control circuit, comprise an operational amplifier U4B, on the 5th pin of described operational amplifier U4B, be parallel with the 9th capacitor C the 9 and the 23 resistance R 23, the 6th pin of described operational amplifier U4B is connected to current detection circuit through the 19 resistance R 19, the 7th pin of described operational amplifier U4B is connected to the base stage of triode Q3 through the 33 resistance R 33, between the 7th pin of described operational amplifier U4B and the 6th pin, be parallel with the 11 capacitor C 11, the collector electrode of described triode Q3 is connected to the 1st pin of blower fan JX2, the 2nd pin of described blower fan JX2 connects power supply through the 28 resistance R 28, by detecting charging current, make operational amplifier U4B output high level or low level control the running of blower fan.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. a three-step charger radiating control circuit, it is characterized in that: comprise an operational amplifier (U4B), on the 5th pin of described operational amplifier (U4B), be parallel with the 9th electric capacity (C9) and the 23 resistance (R23), the 6th pin of described operational amplifier (U4B) is connected to current detection circuit through the 19 resistance (R19), the 7th pin of described operational amplifier (U4B) is connected to the base stage of triode (Q3) through the 33 resistance (R33), between the 7th pin of described operational amplifier (U4B) and the 6th pin, be parallel with the 11 electric capacity (C11), the collector electrode of described triode (Q3) is connected to the 1st pin of blower fan (JX2), the 2nd pin of described blower fan (JX2) connects power supply through the 28 resistance (R28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211867.7U CN203879778U (en) | 2014-04-28 | 2014-04-28 | Three-segment type charger heat radiation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211867.7U CN203879778U (en) | 2014-04-28 | 2014-04-28 | Three-segment type charger heat radiation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879778U true CN203879778U (en) | 2014-10-15 |
Family
ID=51680280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211867.7U Expired - Fee Related CN203879778U (en) | 2014-04-28 | 2014-04-28 | Three-segment type charger heat radiation control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985428A (en) * | 2019-12-14 | 2020-04-10 | 珠海格力电器股份有限公司 | Cooling fan drive circuit and cooking utensil |
-
2014
- 2014-04-28 CN CN201420211867.7U patent/CN203879778U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985428A (en) * | 2019-12-14 | 2020-04-10 | 珠海格力电器股份有限公司 | Cooling fan drive circuit and cooking utensil |
| CN110985428B (en) * | 2019-12-14 | 2020-12-01 | 珠海格力电器股份有限公司 | Cooling fan drive circuit and cooking utensil |
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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: 20141015 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |