CN102148527A - Charging device for preventing overcharge of rechargeable battery - Google Patents
Charging device for preventing overcharge of rechargeable battery Download PDFInfo
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- CN102148527A CN102148527A CN2011101335475A CN201110133547A CN102148527A CN 102148527 A CN102148527 A CN 102148527A CN 2011101335475 A CN2011101335475 A CN 2011101335475A CN 201110133547 A CN201110133547 A CN 201110133547A CN 102148527 A CN102148527 A CN 102148527A
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Abstract
The invention relates to a charging device for preventing the overcharge of a rechargeable battery, which consists of a mains supply AC, a power transformer T and full-bridge rectifier circuit, a rectified alternating current indicating circuit, a triggering circuit of a one-way silicon controlled rectifier (SCR) 1, a bulk charge circuit, a trickle charge circuit and an automatic bulk charge cutting-off circuit. The two problems of overdischarge and overcharge may be produced in the use and maintenance of the rechargeable battery. In a charging process, when the terminal voltage of the rechargeable battery reaches a preset voltage value, the charging device provided by the invention automatically stops charging, thereby effectively preventing the overcharge of the rechargeable battery and effectively preventing the conditions of explosion, ballooning and the like caused by improper charging from influencing the service life of the rechargeable battery. The charging device adopts rectified alternating current so as to achieve a certain remediation effect on the lead sulfate production of a rechargeable battery plate in the charging process, solve the problem of overcharge of the rechargeable battery and make longer the service life of the rechargeable battery.
Description
Technical field
The invention belongs to electronic technology and accumulator charging technology field, is the charging device that prevents the storage battery overcharge about a kind of.
Background technology
Lead acid accumulator in 1859 by Frenchman Pulan spy (G.Plante) invention, the history in existing more than 150 year so far.After the lead acid accumulator invention, in chemical cell, occupy absolute advantage always.This is because it is cheap, raw material are easy to obtain, and good reliability is arranged in the use, is suitable for heavy-current discharge and advantage such as ambient temperature range widely.No matter in traffic, communication, military or in fields such as navigation, aviation, photovoltaic generations, lead acid accumulator has all played and important effect.Particularly the research and development of sealed lead acid storage battery successfully make the scope of its application more extensive.
But the operation and maintenance of lead acid accumulator has two fearnesses, the one, be afraid of over-discharge; The 2nd, be afraid of overcharge.The former is the thing that pays particular attention in use the time; The latter then is the technical problem that the present invention researched and solved.
Charging device of the present invention is in charging process, when reaching scheduled voltage, the terminal voltage of storage battery can stop charging automatically, thereby prevent the storage battery overcharge effectively, prevent effectively because of the improper damage that causes storage battery of charging, especially higher at summer temperature, ambient temperature adds working temperature, the time one of adding overcharge is long, situation such as the very possible explosion that causes storage battery, bulging and influence useful life of storage battery, sometimes even the fried cruelly serious consequence of decreasing thing, hurting sb.'s feelings of storage battery can take place.
The charger that is used for charge in batteries on the market is of a great variety, but the common charger overwhelming majority does not have repair function, when charging the lead sulfate formation of accumulator plate is not had any repair, and the sulfation of pole plate is irreversible process.The long-term relatively poor charger of serviceability can cause very adverse influence to accumulator property, and this adverse effect can accumulate over a long period, and causes finally that its capacity descends rapidly, shorten useful life significantly.So, how charge in batteries and maintenance reach perfect condition or longer service life, and this has been the problem that the storage battery user is concerned about the most.Test, compare and analyze through multiple scheme, the present invention only uses a small amount of common discrete component to realize preventing this difficult problem of storage battery overcharge.
Below describe the correlation technique content that the charging device that prevents the storage battery overcharge of the present invention relates in detail in manufacturing process.
Summary of the invention
Goal of the invention and beneficial effect: the operation and maintenance of lead acid accumulator has two fearnesses, and the one, be afraid of over-discharge; The 2nd, be afraid of overcharge.The thing that the former pays particular attention to when being to use in the process; The latter then is the technical problem that the present invention researched and solved.
Charging device of the present invention is in charging process, when reaching setting voltage value, the terminal voltage of storage battery will stop charging automatically, thereby prevent the storage battery overcharge effectively, prevent to influence the useful life of storage battery effectively because of the situations such as the improper explosion that causes storage battery, bulging of charging.Charging device of the present invention adopts the Rectified alternating current charging, thereby the lead sulfateization to accumulator plate has certain repair in battery charging process, has solved this difficult problem that prevents the storage battery overcharge, makes the longer service life of storage battery.
Technical characterictic: the charging device that prevents the storage battery overcharge, circuits for triggering, large current charge circuit, low current charge circuit and large current charge automatic shutdown circuit by civil power alternating current AC, power transformer T and full bridge rectifier, Rectified alternating current indicating circuit, unidirectional controllable silicon S CR1 are formed, and its feature comprises:
Power transformer T and full bridge rectifier are made up of power transformer T, full-bridge rectification element silicon stack QZ, its connection features is: the two ends of power transformer T primary coil L1 meet civil power alternating current AC respectively, the two ends of power transformer T secondary coil L2 connect the alternating current input of full-bridge rectification element silicon stack QZ respectively, the cathode output end of full-bridge rectification element silicon stack QZ meets the anodal VCC of Rectified alternating current, and the cathode output end of full-bridge rectification element silicon stack QZ links to each other with circuit ground GND;
The circuits for triggering of unidirectional controllable silicon S CR1 are made up of resistance R 5, silicon rectifier diode D2, unidirectional controllable silicon S CR1, its connection features is: the anodal VCC of a termination Rectified alternating current of resistance R 5, the positive pole of another termination silicon rectifier diode D2 of resistance R 5, the negative pole order of silicon rectifier diode D2 is to the control utmost point of controllable silicon SCR 1;
The large current charge circuit is made up of Rectified alternating current and unidirectional controllable silicon S CR1, its connection features is: the anode of unidirectional controllable silicon S CR1 meets the anodal VCC of Rectified alternating current, the negative electrode of unidirectional controllable silicon S CR1 connects the positive pole of charging lead-out terminal, the negative pole connection circuit ground GND of charging lead-out terminal;
The low current charge circuit is made up of Rectified alternating current, resistance R 2, silicon rectifier diode D1 and potentiometer W1, its connection features is: the anodal VCC of a termination Rectified alternating current of resistance R 2, the positive pole of another termination silicon rectifier diode D1 of resistance R 2, the negative pole of silicon rectifier diode D1 connects the end of potentiometer W1, the positive pole of another termination charging lead-out terminal of potentiometer W1;
The large current charge automatic shutdown circuit is by resistance R 5～R6, unidirectional controllable silicon S CR2, voltage stabilizing didoe DW, resistance R 4, electrochemical capacitor C1, potentiometer W2 and resistance R 3 are formed, its connection features is: the positive pole of a termination rectifier diode D2 of resistance R 6, the other end order of resistance R 6 is to the anode of controllable silicon SCR 2, the control of unidirectional controllable silicon S CR2 is extremely with connecing the positive pole of voltage stabilizing didoe DW and an end of resistance R 4, the other end connection circuit ground GND of the negative electrode of unidirectional controllable silicon S CR2 and resistance R 4, the negative pole of voltage stabilizing didoe DW is with connecing the sliding end of potentiometer W2 and the positive pole of electrochemical capacitor C1, the end of the terminating resistor R3 of potentiometer W2, the positive pole of another termination charging lead-out terminal of resistance R 3, the negative pole of the other end of potentiometer W2 and electrochemical capacitor C1 is with connection circuit ground GND.
Connection features in the composition of other circuit and the circuit between the components and parts
The connection features of Rectified alternating current indicating circuit is: the positive pole of red light emitting diodes LED meets the anodal VCC of Rectified alternating current, connection circuit ground GND behind the negative pole series resistor R1 of red light emitting diodes LED.
The operation principle of circuit
Prevent the circuit working principle of the charging device of storage battery overcharge: after unidirectional controllable silicon S CR1 is triggered conducting, promptly storage battery is carried out large current charge.When charging voltage is elevated to storage battery set upper limit value gradually, because regulator potentiometer W2 in advance, make sliding end and the voltage between the circuit ground of potentiometer W1 equal the voltage stabilizing value of voltage stabilizing didoe DW and the trigger voltage sum of unidirectional controllable silicon S CR2, the unidirectional controllable silicon S CR2 conducting that is triggered at this moment.After the unidirectional controllable silicon S CR2 conducting, unidirectional controllable silicon S CR1 trigger voltage is subjected to the battery tension reverse bias and is turned off.After this, Rectified alternating current carries out low current charge by resistance R 2, silicon rectifier diode D1, potentiometer W1 to storage battery.Regulator potentiometer W1 is limited in the scope that needs little electric current.
Description of drawings
Accompanying drawing 1 is to the invention provides an embodiment circuit working schematic diagram that prevents the charging device of storage battery overcharge.
Embodiment
Circuit working schematic diagram and description of drawings according to the charging device that prevents the storage battery overcharge shown in the accompanying drawing 1, and according to the annexation between the components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in the execution mode requires to implement to realize the present invention; Below be that example is elaborated with the 12V storage battery.
The selection of components and parts and technical parameter thereof
Prevent full-bridge rectification element silicon stack QZ in the circuit of charging device of storage battery overcharge, can select the full-bridge of square plastic packaging 5-6A for use, because of power should be installed on the aluminium radiating board more greatly;
Unidirectional controllable silicon S CR1, SCR2 can select the one-way SCR of 6A/100V metallic packaging for use, and it is fixed on the aluminium radiating board with nut;
D1, D2 are silicon rectifier diode, and model is selected 1N4001 for use;
LED is ￠ 5 red light emitting diodes; DW is a voltage stabilizing didoe, its voltage stabilizing value 3.8～4V, and old model can be selected 2CW21 for use, and new model is selected 2CW102 for use, or selects Japanese model 4B2 for use;
Resistance is selected metalfilmresistor for use, and the resistance of resistance R 1 is that 1.5K Ω, power are 1/4W; The resistance of resistance R 2 is that 510 Ω, power are 1W; The resistance of resistance R 3 is that 91 Ω, power are 1/4W; The resistance of resistance R 4 is that 2.2K Ω, power are 1/4W; The resistance of resistance R 5 and R6 is 91 Ω, power is 1/4W; W1 is that linear potentiometer, power are 2W, and its resistance is 510 Ω; W2 is that potentiometer, its resistance are 1.5K Ω, and power is 1W; C1 is an electrochemical capacitor, and its capacity is 50 μ F/25V;
Power transformer T can select the control transformer of BK200 type for use, and the output voltage of secondary coil L2 is selected the 18V retaining for use, the operating circuit requirement 〉=3.5A of secondary coil L2, and power transformer T can also require coiling voluntarily according to technical parameter.
Circuit production and debugging
Fairly simple because of the circuit structure of charging device that prevents the storage battery overcharge, make and be easier to, it is general that the physical connection of components and parts is correct as long as the components and parts performance of using is intact, circuit does not need to debug just can operate as normal.Rectified alternating current in the circuit after the rectification requires to add filter circuit, otherwise repair will be affected in the battery charging process.
When the charging device unloaded operation, the voltage to earth of the anodal VCC of Rectified alternating current is answered 〉=17V; When changing low current charge over to, charging current is about about 50mA, if charging current is quite different, is adjusting under the invalid situation of linear potentiometer W1, can suitably adjust the resistance of resistance R 2; When large current charge, charging current is advisable about about 2.2～2.8A, if charging current not in this scope, can suitably be adjusted the resistance of resistance R 5 in the circuits for triggering.
Claims (2)
1. charging device that prevents the storage battery overcharge, circuits for triggering, large current charge circuit, low current charge circuit and large current charge automatic shutdown circuit by civil power alternating current AC, power transformer T and full bridge rectifier, Rectified alternating current indicating circuit, unidirectional controllable silicon S CR1 are formed, and its feature comprises:
Power transformer T and full bridge rectifier are made up of power transformer T, full-bridge rectification element silicon stack QZ, its connection features is: the two ends of power transformer T primary coil L1 meet civil power alternating current AC respectively, the two ends of power transformer T secondary coil L2 connect the alternating current input of full-bridge rectification element silicon stack QZ respectively, the cathode output end of full-bridge rectification element silicon stack QZ meets the anodal VCC of Rectified alternating current, and the cathode output end of full-bridge rectification element silicon stack QZ links to each other with circuit ground GND;
The circuits for triggering of unidirectional controllable silicon S CR1 are made up of resistance R 5, silicon rectifier diode D2, unidirectional controllable silicon S CR1, its connection features is: the anodal VCC of a termination Rectified alternating current of resistance R 5, the positive pole of another termination silicon rectifier diode D2 of resistance R 5, the negative pole order of silicon rectifier diode D2 is to the control utmost point of controllable silicon SCR 1;
The large current charge circuit is made up of Rectified alternating current and unidirectional controllable silicon S CR1, its connection features is: the anode of unidirectional controllable silicon S CR1 meets the anodal VCC of Rectified alternating current, the negative electrode of unidirectional controllable silicon S CR1 connects the positive pole of charging lead-out terminal, the negative pole connection circuit ground GND of charging lead-out terminal;
The low current charge circuit is made up of Rectified alternating current, resistance R 2, silicon rectifier diode D1 and potentiometer W1, its connection features is: the anodal VCC of a termination Rectified alternating current of resistance R 2, the positive pole of another termination silicon rectifier diode D1 of resistance R 2, the negative pole of silicon rectifier diode D1 connects the end of potentiometer W1, the positive pole of another termination charging lead-out terminal of potentiometer W1;
The large current charge automatic shutdown circuit is by resistance R 5～R6, unidirectional controllable silicon S CR2, voltage stabilizing didoe DW, resistance R 4, electrochemical capacitor C1, potentiometer W2 and resistance R 3 are formed, its connection features is: the positive pole of a termination rectifier diode D2 of resistance R 6, the other end order of resistance R 6 is to the anode of controllable silicon SCR 2, the control of unidirectional controllable silicon S CR2 is extremely with connecing the positive pole of voltage stabilizing didoe DW and an end of resistance R 4, the other end connection circuit ground GND of the negative electrode of unidirectional controllable silicon S CR2 and resistance R 4, the negative pole of voltage stabilizing didoe DW is with connecing the sliding end of potentiometer W2 and the positive pole of electrochemical capacitor C1, the end of the terminating resistor R3 of potentiometer W2, the positive pole of another termination charging lead-out terminal of resistance R 3, the negative pole of the other end of potentiometer W2 and electrochemical capacitor C1 is with connection circuit ground GND.
2. the charging device that prevents the storage battery overcharge according to claim 1, the feature of Rectified alternating current indicating circuit is: the positive pole of red light emitting diodes LED meets the anodal VCC of Rectified alternating current, connection circuit ground GND behind the negative pole series resistor R1 of red light emitting diodes LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101335475A CN102148527A (en) | 2011-05-17 | 2011-05-17 | Charging device for preventing overcharge of rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101335475A CN102148527A (en) | 2011-05-17 | 2011-05-17 | Charging device for preventing overcharge of rechargeable battery |
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| CN102148527A true CN102148527A (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101335475A Pending CN102148527A (en) | 2011-05-17 | 2011-05-17 | Charging device for preventing overcharge of rechargeable battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079050A (en) * | 2013-03-29 | 2014-10-01 | 海洋王（东莞）照明科技有限公司 | Battery charging circuit and charger |
| CN105449804A (en) * | 2016-01-31 | 2016-03-30 | 苏黎 | Mobile terminal power circuit and device |
| CN105490353A (en) * | 2016-01-29 | 2016-04-13 | 炬众钛合（天津）科技发展有限公司 | Intelligent charging box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609502A (en) * | 1969-07-24 | 1971-09-28 | Mcculloch Corp | High frequency battery charger employing an inverter |
| FR2153284A1 (en) * | 1971-09-20 | 1973-05-04 | Braun Ag | |
| JPS5096851A (en) * | 1973-12-22 | 1975-08-01 | ||
| CN2194043Y (en) * | 1993-12-30 | 1995-04-05 | 哈尔滨工业大学 | Automobile battery charger |
| CN202026118U (en) * | 2011-05-17 | 2011-11-02 | 李秉哲 | Charging device for preventing storage battery from being overcharged |
-
2011
- 2011-05-17 CN CN2011101335475A patent/CN102148527A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609502A (en) * | 1969-07-24 | 1971-09-28 | Mcculloch Corp | High frequency battery charger employing an inverter |
| FR2153284A1 (en) * | 1971-09-20 | 1973-05-04 | Braun Ag | |
| JPS5096851A (en) * | 1973-12-22 | 1975-08-01 | ||
| CN2194043Y (en) * | 1993-12-30 | 1995-04-05 | 哈尔滨工业大学 | Automobile battery charger |
| CN202026118U (en) * | 2011-05-17 | 2011-11-02 | 李秉哲 | Charging device for preventing storage battery from being overcharged |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079050A (en) * | 2013-03-29 | 2014-10-01 | 海洋王（东莞）照明科技有限公司 | Battery charging circuit and charger |
| CN105490353A (en) * | 2016-01-29 | 2016-04-13 | 炬众钛合（天津）科技发展有限公司 | Intelligent charging box |
| CN105449804A (en) * | 2016-01-31 | 2016-03-30 | 苏黎 | Mobile terminal power circuit and device |
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Application publication date: 20110810 |