CN202111509U - Non-polarized short circuit protection cell charger circuit - Google Patents
Non-polarized short circuit protection cell charger circuit Download PDFInfo
- Publication number
- CN202111509U CN202111509U CN2011202526263U CN201120252626U CN202111509U CN 202111509 U CN202111509 U CN 202111509U CN 2011202526263 U CN2011202526263 U CN 2011202526263U CN 201120252626 U CN201120252626 U CN 201120252626U CN 202111509 U CN202111509 U CN 202111509U
- Authority
- CN
- China
- Prior art keywords
- circuit
- pin
- short circuit
- output
- output end
- 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
Abstract
The utility model relates to a non-polarized short circuit protection cell charger circuit, belonging to the filed of a cell charging circuit. Two groups of polarity recognition and conversion circuits are symmetrically connected to the output end of a power transformer B, and are serially connected between a secondary coil and the output end respectively through bidirectional silicon controlled rectifiers (TA, TB), a D1 and a D2 are in reverse parallel connection at the two ends of the bidirectional silicon controlled rectifiers (TA, TB), and forms an automatic recognition and conversion circuit with an IC optical coupler relay (or optical coupler silicon controlled rectifier), a current-limiting resistors R1 and R2. The non-polarized short circuit protection cell charger circuit is simple in structure and convenient in use, effectively protects a charger under the short circuit of the output end, and realizes effective charging when polarities are accessed to a cell at will.
Description
Technical field:
The utility model relates to the nonpolarity short-circuit protection charger circuit in battery charger field.
Background technology:
Various on the market at present chargers are various in style, are exactly that the correct polarity that must aim at battery connects but all exist a common characteristic, otherwise will burn charger or battery.
Summary of the invention:
The purpose of the utility model is exactly the defective that exists to prior art, and a kind of charger circuit of nonpolarity short-circuit protection of automatic identification polarity is provided.
Its technical scheme is: connecting two groups of polarity identification change-over circuits from the output symmetry of power transformer B.Every group of polarity identification change-over circuit is by bidirectional triode thyristor T
A, T
BSeries connection output, the controlled utmost point connects integrated IC8 pin, 6 pin, current-limiting resistance R respectively
1One end is connected output M and extremely goes up, and the other end links to each other with IC1,4,5 pin, current-limiting resistance R
2One end is connected output N and extremely goes up, the other end be connected with IC, 2,3,7 pin [optical coupled switch 8,7 pin in the IC1,2,3,4 pin, 6,5 pin are formed polarity identification circuit].D
1, D
2Be connected in parallel on bidirectional triode thyristor T respectively
AWith T
BOn.During energized, when not charging, T
A, T
BDo not have controlled electrode current, M, N joint just do not have voltage output, just can not damage electrical equipment during short circuit yet, needn't consider battery polar during charging yet, at will connect all and can charge normal battery.The utlity model has simple in structure, easy to use.
Description of drawings:
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.IN is power supply input M among the figure, and N is two utmost points of charging connector output.
Embodiment:
Further describing circuit below in conjunction with accompanying drawing constitutes and operation principle: transformer B connects rectifier diode D
1, D
2Form main rectification circuit and be connected in parallel on bidirectional triode thyristor T
A, T
BTwo ends.R
1, R
2Form the polarity identification change-over circuit with IC.During charging, when M connects positive pole, N connects negative pole, and electric current is through M → R
1→ IC1 pin → IC2 pin → R
2→ N negative pole, IC7,8 pin are connected simultaneously.Electric current M → T
AT
1→ T
AG → IC8 pin → IC7 pin → R
2→ N negative pole → M, T
AControlled electrode current work conducting is arranged, T
BDo not have controlled electrode current and end, the M point is failed positive voltage, charges normal.When N connects positive pole, M connects negative pole, T
BControlled electrode current work conducting is arranged, T
ADo not have controlled electrode current and end.N point output positive voltage charges normal.As M, T when N does not have the battery of connecing
A, T
BThere is not controlled electrode current, M, the output of N no-voltage, harmless charger during short circuit.Thereby played the effect of polarity identification and short-circuit protection.(annotate: light-emitting diodes corresponding 7,8,5,6 conductings respectively of working respectively in the IC1,2,3,4)
Claims (1)
1. a nonpolarity short-circuit protection battery charger circuit is characterized in that; Connecting two groups of polarity identification change-over circuits from the output symmetry of power transformer B, the polarity identification change-over circuit is by bidirectional triode thyristor (T
A, T
B) be connected on respectively between secondary coil and output M, the N, and the controlled utmost point connects integrated IC optocoupler controllable silicon or light coupling relay 8 pin, 6 pin, current-limiting resistance R respectively
1One end is connected output M and extremely goes up, and the other end links to each other with IC1,4,5 pin, current-limiting resistance R
2One end is connected output N and extremely goes up, and the other end is connected with IC2,3,7 pin, and IC1,2,3,4 pin constitute optical coupled switch with 8,7,6,5 pin respectively and form polarity identification circuit, D
1, D
2Be connected in parallel on bidirectional triode thyristor T respectively
A, T
BOn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202526263U CN202111509U (en) | 2011-07-14 | 2011-07-14 | Non-polarized short circuit protection cell charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202526263U CN202111509U (en) | 2011-07-14 | 2011-07-14 | Non-polarized short circuit protection cell charger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111509U true CN202111509U (en) | 2012-01-11 |
Family
ID=45436958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202526263U Expired - Fee Related CN202111509U (en) | 2011-07-14 | 2011-07-14 | Non-polarized short circuit protection cell charger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013720A (en) * | 2010-11-10 | 2011-04-13 | 李秉哲 | Charger capable of automatically identifying polarity of storage battery |
| CN103633681A (en) * | 2012-08-26 | 2014-03-12 | 郭振华 | Live line and zero line identifying/converting circuit for charger |
-
2011
- 2011-07-14 CN CN2011202526263U patent/CN202111509U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013720A (en) * | 2010-11-10 | 2011-04-13 | 李秉哲 | Charger capable of automatically identifying polarity of storage battery |
| CN103633681A (en) * | 2012-08-26 | 2014-03-12 | 郭振华 | Live line and zero line identifying/converting circuit for charger |
| CN103633681B (en) * | 2012-08-26 | 2018-01-09 | 郭振华 | A kind of charger identifies change-over circuit with Live line Zero line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120714 |