CN201113409Y - Polarity change-over circuit for charger - Google Patents
Polarity change-over circuit for charger Download PDFInfo
- Publication number
- CN201113409Y CN201113409Y CNU2007200572133U CN200720057213U CN201113409Y CN 201113409 Y CN201113409 Y CN 201113409Y CN U2007200572133 U CNU2007200572133 U CN U2007200572133U CN 200720057213 U CN200720057213 U CN 200720057213U CN 201113409 Y CN201113409 Y CN 201113409Y
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- CN
- China
- Prior art keywords
- charger
- battery
- gate
- circuit
- polarity
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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 discloses a polarity converting circuit for a charger, comprising two sets of switch control circuits Q1 and Q2 which are connected between the charger and a rechargeable battery, wherein, each set of switch control circuit comprises two controllable switches. The polarity converting circuit realizes the automatic conversion of the polarities of the charging circuit by a simple and smart circuit construction, thereby avoiding the bad effect caused by the reverse access of the battery and guaranteeing the use security of the battery and the charger; in addition, the access of an NTC resistor prevents the short circuit current from damaging the battery.
Description
Technical field
The utility model relates to a kind of charging circuit, especially a kind of can be to the polarity switching of rechargeable battery and external electric equipment charging.
Background technology
Portable set as mobile phone, PDA and MP3, generally all adopts rechargeable battery poweredly, and charger has also become indispensable annex.At present, charger kind on the market is a lot, and for specially joining charger, the battery that is to say different model, different size, different output ports can not use same charger to charge, just needs are bought a plurality of chargers when a consumer has multiple portable set, more cause the consumer to waste property, the waste public resource.But charger does not generally allow reverse battery to insert, and through the special conversion of oversampling circuit, charger is not damaged easily, and if short-circuit also can cause damage by conductivity cell.
The utility model content
The utility model purpose has provided a kind of polarity switching that is used for charger, can realize automatic conversion charging circuit polarity, thus the unfavorable infringement of effectively avoiding the battery short circuit that charger and battery itself are caused.
The technical solution adopted in the utility model is to achieve these goals:
A kind of polarity switching that is used for charger comprises the two groups of interconnective ON-OFF control circuit Q1 and the Q2 that connect between charger and the rechargeable battery, comprises in described every group of ON-OFF control circuit to be connected with two controlled switches.
Preferably, described two groups of ON-OFF control circuit Q1 are connected with Q2 is parallel with one another.
Preferably, the gate-controlled switch in the described on-off controller is made up of stiff end A and movable end K1 and K2.
Preferably, the gate-controlled switch Q1P of described on-off controller Q1 is connected conducting formation path with the gate-controlled switch Q2N of on-off controller Q2 by Polarity Control; The gate-controlled switch Q1N of described on-off controller Q1 is connected conducting with the gate-controlled switch Q2P of on-off controller Q2 by Polarity Control and forms path.
And, be in series with at least one NTC resistance in the loop of described polarity switching.
The utility model passes through circuit structure simply cleverly, has realized the automatic conversion of charging circuit polarity, thereby can avoid guaranteeing the safe in utilization of battery and charger because reverse battery inserts the ill effect that forms; Insert NTC resistance in addition and can prevent that short circuit current from damaging battery.
Description of drawings
Fig. 1 is a system block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.As shown in Figure 1 and Figure 2, a kind of polarity switching that is used for charger, it comprises two groups of interconnective ON-OFF control circuit Q1 and Q2 between charger and the rechargeable battery, ON-OFF control circuit Q1 is connected with Q2 is parallel with one another, comprise in every group of ON-OFF control circuit and be connected with two gate-controlled switches, be respectively Q1P, Q1N and Q2P and Q2N.Gate-controlled switch is made up of stiff end A and movable end K1 and K2, the structure of two-wire parallel connection, movable end K1 and K2 are arranged at respectively in two wiring, and every line connects corresponding wiring in another group ON-OFF control circuit respectively again, makes two groups of switches can work in coordination with serial or parallel connection work.Mainly be to utilize polarity of voltage to change to realize two optionally conductings of gate-controlled switch in the utility model, promptly form the effect that Q1P conducting Q1N ends or Q1P ends the Q1N conducting.
After the polarity automatic switching circuit was connected charger, it was that negative pole or P1 are that negative pole, P2 are for anodal for anodal, P2 that P1 can appear in the P1 of output, P2 end at random.When P1 is a negative pole for anodal, P2, anode and P1 connect, and battery cathode and P2 connect, and charger charges the battery naturally by polarity switching.
When P1 is a negative pole for anodal, P2, anode and P2 connect, and when battery cathode and P1 connect, the battery reversal connection was the forward series relationship with charger on charger, and charger is not to battery charge.At this moment gate-controlled switch Q2P adds that positive voltage makes that it ends, gate-controlled switch Q1P adds negative voltage makes its conducting, gate-controlled switch Q1N add negative voltage to make that it ends, gate-controlled switch Q2N adds positive voltage makes its conducting, just present Q2P and Q1N then by, Q1P and Q2N conducting, making P2 is that anodal, P1 is a negative pole, has realized that polarity changes automatically.At this moment the anodal corresponding anode of P2, the corresponding battery cathode of P1 negative pole, charger can charge normal for battery again.This process acting in opposition also can reach same effect.
When the battery reversal connection on charger, a very big short circuit current can appear.For preventing that the instantaneous short circuit electric current from damaging battery, the utility model NTC resistance of in P1, P2 output loop, connecting, the NTC resistance is bigger when battery rigidly connects, the energy limiting short-circuit current, thereby prevented the battery damage, after NTC produced power consumption, the resistance of NTC can reduce, thereby avoided the big electric energy of the long-time consumption of NTC.
The utility model passes through circuit structure simply cleverly, has realized the automatic conversion of charging circuit polarity, thereby can avoid guaranteeing the safe in utilization of battery and charger because reverse battery inserts the ill effect that forms; In addition, insert NTC resistance and can prevent that short circuit current from damaging battery.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design; can also make some circuit variation and improvement, these all belong to protection range of the present utility model.
Claims (5)
1. a polarity switching that is used for charger is characterized in that, comprises two groups of interconnective ON-OFF control circuit Q1, Q2 connecting between charger and the rechargeable battery, comprises in described every group of ON-OFF control circuit to be connected with two controlled switches.
2. polarity switching according to claim 1 is characterized in that described two groups of ON-OFF control circuit Q1, Q2 connections parallel with one another.
3. as polarity switching as described in the claim 2, it is characterized in that the gate-controlled switch in the described on-off controller adopts the two-wire parallel-connection structure, form by stiff end A and movable end K1 and K2.
4. as polarity switching as described in claim 1 or 2 or 3, it is characterized in that the gate-controlled switch Q1P of described on-off controller Q1 is connected conducting with the gate-controlled switch Q2N of on-off controller Q2 by Polarity Control and forms path; The gate-controlled switch Q1N of described on-off controller Q1 is connected conducting with the gate-controlled switch Q2P of on-off controller Q2 by Polarity Control and forms path.
5. as polarity switching as described in the claim 4, it is characterized in that, be in series with at least one NTC resistance between the loop of described polarity switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200572133U CN201113409Y (en) | 2007-09-20 | 2007-09-20 | Polarity change-over circuit for charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200572133U CN201113409Y (en) | 2007-09-20 | 2007-09-20 | Polarity change-over circuit for charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113409Y true CN201113409Y (en) | 2008-09-10 |
Family
ID=39965154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200572133U Expired - Fee Related CN201113409Y (en) | 2007-09-20 | 2007-09-20 | Polarity change-over circuit for charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113409Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227093A (en) * | 2011-06-10 | 2011-10-26 | 林万炯 | Polarity switching circuit of power supply |
| WO2018129979A1 (en) * | 2017-01-13 | 2018-07-19 | 常州市派腾电子技术服务有限公司 | Electronic cigarette and battery protection circuit thereof |
| JP2020092566A (en) * | 2018-12-07 | 2020-06-11 | Fdk株式会社 | Charger and charging method |
-
2007
- 2007-09-20 CN CNU2007200572133U patent/CN201113409Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227093A (en) * | 2011-06-10 | 2011-10-26 | 林万炯 | Polarity switching circuit of power supply |
| WO2018129979A1 (en) * | 2017-01-13 | 2018-07-19 | 常州市派腾电子技术服务有限公司 | Electronic cigarette and battery protection circuit thereof |
| JP2020092566A (en) * | 2018-12-07 | 2020-06-11 | Fdk株式会社 | Charger and charging method |
| JP7084290B2 (en) | 2018-12-07 | 2022-06-14 | Fdk株式会社 | Charger and charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN LONGWEISHENG ELECTRONICS TECHNOLOGY CO., Free format text: FORMER OWNER: XU JIANHUA Effective date: 20100520 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528000 LONGWEISHENG TECHNOLOGY CO., LTD., BUILDING C, SHIGUAN INDUSTRY ZONE, LONGHUA, SHENZHEN CITY, GUANGDONG PROVINCE TO: 523400 FACTORY BUILDING 2# (BLOCK C), SHIGUAN INDUSTRIAL DISTRICT, LONGHUA COMMUNITY, DALANG STREET, BAOAN DISTRICT, SHENZHEN CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100520 Address after: 523400, Shenzhen, Baoan District big wave street Longhua community stone industry zone 2 (C) plant Patentee after: Shenzhen City Lvsun Electronic Technology Co., Ltd. Address before: 528000 Guangdong city of Shenzhen province Longhua Shiguan Industrial Zone C building dragon via Electronic Technology Co. Ltd. Patentee before: Xu Jianhua |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20160920 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |