CN102013720A - Charger capable of automatically identifying polarity of storage battery - Google Patents
Charger capable of automatically identifying polarity of storage battery Download PDFInfo
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- CN102013720A CN102013720A CN2010105373823A CN201010537382A CN102013720A CN 102013720 A CN102013720 A CN 102013720A CN 2010105373823 A CN2010105373823 A CN 2010105373823A CN 201010537382 A CN201010537382 A CN 201010537382A CN 102013720 A CN102013720 A CN 102013720A
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- storage battery
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- rectifier diode
- bidirectional thyristor
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Abstract
The invention belongs to the technical field of electronics and storage battery charging, and relates to a charger capable of automatically identifying polarity of a storage battery, which is suitable for charging various small-sized storage batteries. The charger capable of automatically identifying the polarity of the storage battery consists of a power frequency step-down transformer, a half-wave rectifying circuit, a thyristor grid trigger circuit and the storage battery, and is characterized in that: a rectifying circuit of a positive or negative half cycle of alternating current is formed by a bidirectional thyristor and a silicon rectifier diode which are connected in series. For various types of chargers sold in the market, the positive polarity and the negative polarity of the storage battery cannot be mistaken absolutely when the storage battery is connected during charging, otherwise, the storage battery or the charger can be burnt out during the charging. In the charger, the polarity of the storage battery is automatically judged through a special circuit, the operation procedure of the storage battery during the charging is simplified, and the charger is suitable for extensive maintenance and extensive use of the storage battery.
Description
Technical field
The invention belongs to electronics and accumulator charging technology field, relate to a kind of charger of automatic identification accumulator polarity, be applicable to the charging of various small batteries.
Background technology
The charger that is used for charge in batteries in market is of a great variety, but almost without exception all be must correct identification storage battery for charge in batteries the time and the both positive and negative polarity of charger, must connect correctly that charger ability is normal charge for storage battery.In case otherwise both positive and negative polarity connects and to make mistakes, and in time do not find, so just might cause light performance or useful life of then reducing storage battery, burns out the electronic component in the charger; Heavy then burn out charger or fill bad storage battery; Even the fried cruelly serious consequence of decreasing thing, hurting sb.'s feelings of storage battery can take place.Therefore,, bring great convenience will for so user's use, also be particularly suitable for the maintenance and the extensive use of the charge in batteries or the shop front, stand if can invent a kind of charger of polarity of automatic identification storage battery.
Below describe a kind of making correlation technique of charger of automatic identification accumulator polarity in detail.
Summary of the invention
Goal of the invention: the present invention is that described nonpolarity battery charger is by the automatic judgement of special circuit realization to accumulator polarity, has simplified operation sequence when charge in batteries, is fit to the low level management of battery service.
Technical scheme: the charger of discerning accumulator polarity automatically, form by power frequency step-down transformer, half-wave rectifying circuit, thyristor gate trigger circuit and storage battery, it is characterized in that positive half cycle of alternating current or negative half period rectification circuit constitute by bidirectional thyristor serial connection silicon rectifier diode.
The each several part circuit is formed and the mutual annexation of components and parts
1. the gate trigger circuit of bidirectional thyristor (BT1): form by storage battery, a port, bidirectional thyristor (BT1), silicon rectifier diode (D4), current-limiting resistance (R2), b port, battery positive voltage connects the first anode (T1) of bidirectional thyristor (BT1) through a port, the grid (G) of bidirectional thyristor (BT1) connects the positive pole of silicon rectifier diode (D4), the negative pole of silicon rectifier diode (D4) connects the upper end of current-limiting resistance (R2), and the lower end of current-limiting resistance (R2) connects b port and battery terminal negative respectively.
2. the positive half cycle rectification circuit of alternating current: form by power frequency step-down transformer (B), bidirectional thyristor (BT1), a port, storage battery, b port, silicon rectifier diode (D3), the secondary coil upper end of power frequency step-down transformer (B) connects the second plate (T2) of bidirectional thyristor (BT1), the first anode (T1) connects battery positive voltage through a port, battery terminal negative process b port connects the positive pole of silicon rectifier diode (D3), and the negative pole of silicon rectifier diode (D3) connects the lower end of power frequency step-down transformer (B) secondary coil.
3. the gate trigger circuit of bidirectional thyristor (BT2): form by storage battery, b port, bidirectional thyristor (BT2), current-limiting resistance (R1), silicon rectifier diode (D2), a port, battery positive voltage connects the first anode (T1) of bidirectional thyristor (BT2) through the b port, the grid (G) of bidirectional thyristor (BT2) connects the lower end of current-limiting resistance (R1), the positive pole of the last termination silicon rectifier diode (D2) of current-limiting resistance (R1), the negative pole of silicon rectifier diode (D2) connects battery terminal negative through a port.
4. alternating current negative half period rectification circuit: form by power frequency step-down transformer (B), bidirectional thyristor (BT2), b port, storage battery, a port, silicon rectifier diode (D1), the second plate (T2) of the following termination bidirectional thyristor (BT2) of power frequency step-down transformer (B) secondary coil, the first anode (T1) connects the positive pole of storage battery through the b port, battery terminal negative process a port connects the positive pole of silicon rectifier diode (D1), and the negative pole of silicon rectifier diode (D1) connects the upper end of power frequency step-down transformer (B) secondary coil.
The circuit working principle:
Industrial Frequency Transformer (B) electric after, through step-down, its secondary alternating voltage that obtains low pressure, the conducting situation of BT1, BT2, D1, D3, D2, D4 is by the accumulator polarity decision that is recharged.When the charging output port did not connect storage battery, two bidirectional thyristors (BT1, BT2) are the non-grid electric current all, and entire circuit is in cut-off state.
If the upper end of storage battery is anodal, the lower end is a negative pole, grid (G) trigger current of bidirectional thyristor (BT1) then: grid (G) → diode (D4) → current-limiting resistance (the R2) → b port → battery terminal negative by battery positive voltage → a port → bidirectional thyristor (BT1) forms the loop, makes bidirectional thyristor (BT1) conducting.
The secondary alternating voltage of the depressor (B) frequently of exchanging work charges to storage battery through the secondary formation loop of bidirectional thyristor (BT1) → a port → battery positive voltage → battery terminal negative → b port → rectifier diode (D3) → Industrial Frequency Transformer (B).
If storage batteries polarity is opposite, that is: when storage battery upper end be negative pole, when the lower end is anodal, then the grid current of bidirectional thyristor (BT2) forms the loop by battery positive voltage → b port → bidirectional thyristor (BT2) grid (G) → current-limiting resistance (R1) → diode (D2) → a port → battery terminal negative, makes bidirectional thyristor (BT2) conducting.
The secondary voltage of Industrial Frequency Transformer (B) charges to storage battery through the secondary formation loop of bidirectional thyristor (BT2) → b port → battery positive voltage → battery terminal negative → a port → rectifier diode (D1) → Industrial Frequency Transformer (B).
By above analysis as can be known, storage batteries is regardless of polarity, and circuit all can be judged the polarity of storage battery automatically, and this charger can both effectively charge to storage battery.But charging modes is halfwave rectifier all the time in any case, thereby charger has much room for improvement to the utilance of alternating current.
Beneficial effect: the present invention is fit to extensive use, positive and negative polarity anything but can be wrong when the charger of the various models of selling on the market all required external storage battery, otherwise will burn out storage battery or charger during charging, the present invention introduces a kind of safety-type charger circuit, can proofread and correct positive-negative polarity during use, directly connecting battery terminal can be safely, charge normal, use the hand of being in a good mood.
Description of drawings
Accompanying drawing is a circuit working schematic diagram of discerning the charger of accumulator polarity automatically.
Embodiment
Specification requirement according to the schematic diagram of circuit working shown in the accompanying drawing and description of drawings and the following stated is implemented, and can realize the present invention.
Component parameter and selection
1. the power of power frequency step-down transformer (B) is determined according to the capacity of storage battery, present embodiment is an example with the storage battery of 14AH/12V, the power of Industrial Frequency Transformer selects 50～60W, the power of Industrial Frequency Transformer during design (B) bigger for well, the elementary winding voltage of Industrial Frequency Transformer (B) is that the secondary winding voltage of 220V, Industrial Frequency Transformer (B) is 16V;
2. bidirectional thyristor BT1, BT2, that is: bidirectional triode thyristor, BTA20-600TW (20A/600V), the dress mode is T0-220, should suitably be that two thyristors install radiator additional during installation;
3. silicon rectifier diode D1, D3 model are 1A6, and maximum operating currenbt is 6A;
4. silicon diode D2, D4 are silicon rectifier diode, and model is 1N4001;
5. the power of current-limiting resistance R1, R2 is that 2W, resistance are 240 Ω.
Circuit debugging
Circuit working schematic diagram shown in the drawings to specifications, the welding correctness and the welding quality of whole components and parts in the check circuit.
It is intact to need only component quality generally speaking, and the circuit welding is errorless, connects the storage battery of terminal voltage 〉=10.8V, and will get final product operate as normal behind this charger connection civil power.If the trigger current of bidirectional thyristor grid (G) is improper, can suitably adjust the resistance of two step-down current-limiting resistance R1 and R2.
Can not trigger bidirectional thyristor BT1 or BT2 conducting if the storage battery residual voltage is too small, just can not charge.
Technical indicator
1. alternating current voltage: 220V;
2. secondary winding output voltage: exchange 16V;
3. charging output port: refute and connect 12V storage battery (accumulator voltage to be filled 〉=10.8V);
4. the trigger current of bidirectional thyristor BT1, BT2: 16～20mA;
5. charging current is about: 2.1～3A.
Claims (5)
1. automatic charger of identification accumulator polarity, form by power frequency step-down transformer, half-wave rectifying circuit, thyristor gate trigger circuit and storage battery, it is characterized in that the rectification circuit of positive half cycle of alternating current or negative half period constitutes by bidirectional thyristor serial connection silicon rectifier diode.
2. the charger of automatic identification accumulator polarity according to claim 1, the gate trigger circuit that it is characterized in that bidirectional thyristor (BT1), by storage battery, the a port, bidirectional thyristor (BT1), silicon rectifier diode (D4), current-limiting resistance (R2), the b port is formed, battery positive voltage connects the first anode (T1) of bidirectional thyristor (BT1) through a port, the grid (G) of bidirectional thyristor (BT1) connects the positive pole of silicon rectifier diode (D4), the negative pole of silicon rectifier diode (D4) connects the upper end of current-limiting resistance (R2), and the lower end of current-limiting resistance (R2) connects b port and battery terminal negative respectively.
3. the charger of automatic identification accumulator polarity according to claim 1, it is characterized in that the positive half cycle rectification circuit of alternating current, by power frequency step-down transformer (B), bidirectional thyristor (BT1), the a port, storage battery, the b port, silicon rectifier diode (D3) is formed, the secondary coil upper end of power frequency step-down transformer (B) connects the second plate (T2) of bidirectional thyristor (BT1), the first anode (T1) connects battery positive voltage through a port, battery terminal negative process b port connects the positive pole of silicon rectifier diode (D3), and the negative pole of silicon rectifier diode (D3) connects the lower end of power frequency step-down transformer (B) secondary coil.
4. the charger of automatic identification accumulator polarity according to claim 1, the gate trigger circuit that it is characterized in that bidirectional thyristor (BT2), by storage battery, the b port, bidirectional thyristor (BT2), current-limiting resistance (R1), silicon rectifier diode (D2), the a port is formed, battery positive voltage connects the first anode (T1) of bidirectional thyristor (BT2) through the b port, the grid (G) of bidirectional thyristor (BT2) connects the lower end of current-limiting resistance (R1), the positive pole of the last termination silicon rectifier diode (D2) of current-limiting resistance (R1), the negative pole of silicon rectifier diode (D2) connects battery terminal negative through a port.
5. the charger of automatic identification accumulator polarity according to claim 1, it is characterized in that alternating current negative half period rectification circuit, by power frequency step-down transformer (B), bidirectional thyristor (BT2), the b port, storage battery, the a port, silicon rectifier diode (D1) is formed, the second plate (T2) of the following termination bidirectional thyristor (BT2) of power frequency step-down transformer (B) secondary coil, the first anode (T1) connects the positive pole of storage battery through the b port, battery terminal negative process a port connects the positive pole of silicon rectifier diode (D1), and the negative pole of silicon rectifier diode (D1) connects the upper end of power frequency step-down transformer (B) secondary coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105373823A CN102013720A (en) | 2010-11-10 | 2010-11-10 | Charger capable of automatically identifying polarity of storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105373823A CN102013720A (en) | 2010-11-10 | 2010-11-10 | Charger capable of automatically identifying polarity of storage battery |
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| Publication Number | Publication Date |
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| CN102013720A true CN102013720A (en) | 2011-04-13 |
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| CN2010105373823A Pending CN102013720A (en) | 2010-11-10 | 2010-11-10 | Charger capable of automatically identifying polarity of storage battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570562A (en) * | 2012-02-28 | 2012-07-11 | 黄勇 | Charger capable of identifying positive and negative poles of storage battery |
| CN103595110A (en) * | 2012-08-15 | 2014-02-19 | 郭振华 | Polarity identification converting circuit for charger |
| CN104300499A (en) * | 2013-07-15 | 2015-01-21 | 珠海格力电器股份有限公司 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113524Y (en) * | 2007-09-19 | 2008-09-10 | 刘玉忠 | Non-polar charger circuit |
| CN201846117U (en) * | 2010-11-10 | 2011-05-25 | 李秉哲 | Charger automatically recognizing polarity of storage battery |
| CN202111509U (en) * | 2011-07-14 | 2012-01-11 | 吴迅 | Non-polarized short circuit protection cell charger circuit |
-
2010
- 2010-11-10 CN CN2010105373823A patent/CN102013720A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113524Y (en) * | 2007-09-19 | 2008-09-10 | 刘玉忠 | Non-polar charger circuit |
| CN201846117U (en) * | 2010-11-10 | 2011-05-25 | 李秉哲 | Charger automatically recognizing polarity of storage battery |
| CN202111509U (en) * | 2011-07-14 | 2012-01-11 | 吴迅 | Non-polarized short circuit protection cell charger circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570562A (en) * | 2012-02-28 | 2012-07-11 | 黄勇 | Charger capable of identifying positive and negative poles of storage battery |
| CN103595110A (en) * | 2012-08-15 | 2014-02-19 | 郭振华 | Polarity identification converting circuit for charger |
| CN103595110B (en) * | 2012-08-15 | 2017-06-16 | 郭振华 | A kind of charger polarity identification change-over circuit |
| CN104300499A (en) * | 2013-07-15 | 2015-01-21 | 珠海格力电器股份有限公司 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
| CN104300499B (en) * | 2013-07-15 | 2019-02-05 | 珠海格力电器股份有限公司 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
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Application publication date: 20110413 |