CN201985561U - Reverse connection-prevention charger - Google Patents
Reverse connection-prevention charger Download PDFInfo
- Publication number
- CN201985561U CN201985561U CN2011200007676U CN201120000767U CN201985561U CN 201985561 U CN201985561 U CN 201985561U CN 2011200007676 U CN2011200007676 U CN 2011200007676U CN 201120000767 U CN201120000767 U CN 201120000767U CN 201985561 U CN201985561 U CN 201985561U
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Abstract
The utility model discloses a reverse connection-prevention charger which comprises an input filter circuit, an AC/DC conversion circuit, a dedicated PWM (Pulse-Width Modulation) chip for a power supply, a main conversion transformer, an output filter circuit, and a singlechip, wherein the output end of the input filter circuit is connected to the input end of the AC/DC conversion circuit; the AC/DC conversion circuit is connected with and controlled by the dedicated PWM chip for the power supply; and the output end of the AC/DC conversion circuit is connected to the input end of the main conversion transformer. The reverse connection-prevention charger further comprises an input switching control circuit including a relay, the positive pole of the main conversion transformer is connected with the pin 2 and the pin 4 of the relay and the negative pole of that is connected with the pin 1 and the pin 5 after the output end of the main conversion transformer passes the output filter circuit; and the pin of the singlechip is connected to the input switching control circuit. The charger can automatically distinguish the positive and negative polarity of the battery, and the positive and negative polarity of the charger can be automatically converted for charging, so that a user does not need to manually change the position of charging output clips or plugs.
Description
Technical field
The utility model relates to a kind of anti-reverse charger.
Background technology
Battery is the critical piece of electric bicycle, for guaranteeing the cruising of electric bicycle, need charge to battery.There is following problem in electric car charger at present: the polarity of charger and battery connects inverse time, can cause damage to charger and battery.The battery charge socket both positive and negative polarity of different manufacturer production and charger output both positive and negative polarity are not quite similar, and when the user uses the different brands charger mutually, may cause battery and charger to damage.
Some charger has anti-reverse function, and when connecing inverse time, the charger no-output is exported clip or plug but need manually exchange charging, and the client has been caused inconvenience.
The utility model content
The purpose of this utility model provides a kind of anti-reverse charger, and the infringement problem that causes in the time of not only solving charger and battery reversal connection does not need the user manually to exchange charging output clip or plug simultaneously yet.
The technical scheme that realizes the utility model purpose is a kind of anti-reverse charger, comprises input filter circuit, AC/DC translation circuit, power supply dedicated PWM chip, main transformer transformation depressor, output filter circuit, single-chip microcomputer; The output termination AC/DC translation circuit input of input filter circuit; The AC/DC translation circuit connects power supply dedicated PWM chip, by power supply dedicated PWM chip controls; The input of the output termination main transformer transformation depressor of AC/DC translation circuit; Also comprise the input control switching circuit; Described input control switching circuit comprises relay, and main transformer transformation depressor output is through anodal succeeding on 2 pin and 4 pin of electrical equipment behind the output filter circuit, and negative pole connects 1 pin and 5 pin; The single-chip microcomputer pin connects the input control switching circuit.
When battery was normally just inserting, the Single-chip Controlling relay was failure to actuate, and positive pole advances 3 pin from 2 pin and goes out, and negative pole advances 6 pin from 5 pin and goes out; Fashionable when the battery reversal connection, Single-chip Controlling actuating of relay adhesive anodal advanced 6 pin from 4 pin and is gone out, and negative pole advances 3 pin from 1 pin and goes out.
Described single-chip microcomputer model is 78P258.
The model of described power supply dedicated PWM chip is UC3845
After the utility model adopts such scheme, have following good effect: the infringement problem that the input control switching circuit that (1) the utility model adopts has caused when having solved charger and battery reversal connection effectively, guaranteed user's personal safety.
(2) the input control switching circuit that adopts of the utility model when charger and battery reversal connection, can realize that output polarity exchanges, and makes charger charge normal, and does not need manually to exchange charging and exports clip or plug, and is user-friendly.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is single chip circuit figure.
Embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, present embodiment is with a kind of anti-reverse charger of single-chip microcomputer 78P258 as entire circuit control core.Comprise input filter circuit, AC/DC translation circuit, power supply dedicated PWM chip, main transformer transformation depressor, output filter circuit, single-chip microcomputer, also comprise the input control switching circuit, the input control switching circuit comprises relay.
Civil power enters from the input filter circuit that comprises transformer T2, enters the AC/DC translation circuit after by bridge heap BD1 rectification.The AC/DC translation circuit is mainly by UC3845 power supply dedicated PWM chip controls.The input of the output termination main transformer transformation depressor T1 of AC/DC translation circuit, the output of main transformer transformation depressor T1 by diode D5 rectification after both positive and negative polarity receive respectively on 2,4 pin and 1,5 pin of relay.Single-chip microcomputer adopts the 78P258 single-chip microcomputer of band ADC and PWM input port.The output of main transformer transformation depressor T1 by diode D5 rectification after both positive and negative polarity receive respectively on 2,4 pin and 1,5 pin of relay.
Under the normal condition, 5V voltage is added to by resistance R 45 on the positive pole of output, carries out the ADC conversion sending single-chip microcomputer inside after by resistance R 46, resistance R 47 dividing potential drops to.
When normal access battery, the electrical voltage point between resistance R 46 and the resistance R 47 is for just, and single-chip microcomputer detects the back control relay and is failure to actuate, and anodally advances 3 pin from 2 pin and goes out, and negative pole advances 6 pin from 5 pin and goes out, and charger charges normal; When the battery reversed polarity inserted, the electrical voltage point between resistance R 46 and the resistance R 47 was negative, and single-chip microcomputer detects back control relay action adhesive, and positive pole advances 6 pin from 4 pin and goes out, and negative pole advances 3 pin from 1 pin and goes out, and the realization output polarity is exchanged, and charger enters and charges normal.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. an anti-reverse charger comprises input filter circuit, AC/DC translation circuit, power supply dedicated PWM chip, main transformer transformation depressor, output filter circuit, single-chip microcomputer, the output termination AC/DC translation circuit input of input filter circuit; The AC/DC translation circuit connects power supply dedicated PWM chip, by power supply dedicated PWM chip controls; The input of the output termination main transformer transformation depressor of AC/DC translation circuit; It is characterized in that: also comprise the input control switching circuit; Described input control switching circuit comprises relay, and main transformer transformation depressor output is through anodal succeeding on 2 pin and 4 pin of electrical equipment behind the output filter circuit, and negative pole connects 1 pin and 5 pin; The single-chip microcomputer pin connects the input control switching circuit.
2. a kind of anti-reverse charger as claimed in claim 1 is characterized in that: the single-chip microcomputer model is 78P258.
3. a kind of anti-reverse charger as claimed in claim 1 is characterized in that: the model of power supply dedicated PWM chip is UC3845.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007676U CN201985561U (en) | 2011-01-04 | 2011-01-04 | Reverse connection-prevention charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007676U CN201985561U (en) | 2011-01-04 | 2011-01-04 | Reverse connection-prevention charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985561U true CN201985561U (en) | 2011-09-21 |
Family
ID=44613012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200007676U Expired - Fee Related CN201985561U (en) | 2011-01-04 | 2011-01-04 | Reverse connection-prevention charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201985561U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329093A (en) * | 2017-08-10 | 2017-11-07 | 深圳市锐拓新源科技有限公司 | A kind of battery bag electric performance test attachment means |
-
2011
- 2011-01-04 CN CN2011200007676U patent/CN201985561U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329093A (en) * | 2017-08-10 | 2017-11-07 | 深圳市锐拓新源科技有限公司 | A kind of battery bag electric performance test attachment means |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20170104 |