CN2735632Y - Flash-point pulse interval charger - Google Patents
Flash-point pulse interval charger Download PDFInfo
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- CN2735632Y CN2735632Y CN 200420062229 CN200420062229U CN2735632Y CN 2735632 Y CN2735632 Y CN 2735632Y CN 200420062229 CN200420062229 CN 200420062229 CN 200420062229 U CN200420062229 U CN 200420062229U CN 2735632 Y CN2735632 Y CN 2735632Y
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Abstract
The utility model discloses a flash-point pulse interval charger, relating to a novel device of rechargeable batteries. The flash-point pulse interval charger is characterized in that a charger can be a plumbic acid battery jar, a nickel-hydrogen battery jar or a maintenance free rechargeable battery jar. A case of the charger is provided. The case of the charger is provided with a heat radiation window. The heat radiation window is provided with a dust prevention inclined baffle. A power plug and a charging plug of the battery jar are arranged on the case of the charger. An electronic circuit board and a charger electronic circuit are arranged in the case of the charger. The flash-point pulse interval charger is characterized in that the electronic circuit of the charger is composed of a power rectifier circuit, an oscillating circuit, an oscillation control circuit, an impulse interval charging circuit and a flash-point indicator circuit.
Description
Technical field
What the utility model flash-point pulse spacing formula charger related to is the chargeable storage battery device of a kind of novelty, is specially adapted to lead-acid accumulators, ni-mh storage battery, non-maintaining chargeable bottle is made charger.
Background technology
At present, storage battery three-wheel, assisted electric bicycle use the lead-acid accumulators charger, adopting transformer to reduce voltage directly charges to storage battery through bridge rectifier, in the charging process along with the external power voltage fluctuation, charging voltage fluctuation is big, and storage battery damages easily, though have added voltage stabilizing or constant current charge circuit, because components and parts damage, still can cause to overcharge or short circuit, overdischarge damage storage battery to storage battery.Because adopt the constant current charge mode, charge efficiency is too low, the too high meeting of charger self-heating amount causes components and parts to damage, and reduces charger useful life, also can cause the storage battery undercharge, reduces the storage battery life-span.
Summary of the invention
The purpose of this utility model is to provide a kind of flash-point pulse spacing formula charger at above-mentioned weak point; having oscillation control circuit is the output overcurrent-overvoltage protecting circuit; and be provided with the pulse spacing charging circuit; can prevent that storage battery from overcharging, the protection storage battery guarantees the storage battery full charge; charger itself has short circuit and heat protection function; can guarantee the charger operate as normal, prolong the useful life of charger greatly, and can activate and repair old and feeble storage battery.
Flash-point pulse spacing formula charger takes following scheme to realize: flash-point pulse spacing formula charger has charger case, and charger case is provided with the heat radiation window, and thermal window is provided with dustproof slanting baffle, the degree of protection height.Device has power input line, attaching plug (input plug), storage battery charging plug (output plug) on the charger case, can need conversion by the user.Shell adopts the ABS engineering plastics, and good insulation preformance prevents to get an electric shock intensity, good toughness.Device has charger electronic circuit board, charger electronic circuit and electronics unit, device in the charger case.The charger electronic circuit is made up of power rectifier circuit, oscillating circuit, oscillation control circuit (overcurrent-overvoltage protecting circuit), pulse spacing charging circuit, flash-point indicating circuit.
Power rectifier circuit comprises that capacitor C 1, C2, C5, linear filter LF1, bridge rectifier D1～D4, power firestreak ACL, zero line CAN link to each other with filter LF1 input by fuse RT, thermistor FU1 respectively, filter LF1 input is connected with high-frequency filter capacitor C1, filter LF1 output links to each other with bridge rectifier D1～D4 input, and bridge rectifier D1～D4 output is connected with filter capacitor C5.
Oscillating circuit comprises self-maintained circuit, output supply integrated package operating circuit, output charge power supply circuit.Self-maintained circuit comprises diode D5, D6, D7, D11, large power triode V1, V2, resistance R 1, R4～R11, capacitor C 3, C4, C6, C7, C8, switch transformer EI22, EI33; Output is supplied with the integrated package operating circuit and is comprised diode D9, D10, capacitor C 6; Output charge power supply circuit comprises half-bridge D15, filter inductance EI28.
Oscillation control circuit comprises special-purpose pulse modulation integrated circuit (IC) 1, resistance R 13, R16～R30, R
*, R
*, capacitor C 9, C10, C12～C16, diode D11～D14, D16, D17, triode V3, V4, V5.
The pulse spacing charging circuit comprises pulse modulation integrated circuit (IC) 1, resistance R 51, R52, R53, R54, R55, R56, triode V5, capacitor C 50.
The flash-point indicating circuit comprises four input integrated operational amplifier IC2, indicator light LED1, LED2, resistance R 2, R3, R32, R34, R36, R39～R42, R50, diode D18, D19, capacitor C 18, C19, triode V6.
Flash-point pulse spacing formula charger operation principle:
One, main circuit operation principle: because the charger power output is big, therefore this circuit adopts half-bridge driven formula translation circuit, and be the core control piece with special-purpose pulse modulation integrated circuit (IC) 1 (TL494), after the energized, civil power needs about 300V direct voltage to provide working power for TL494 after bridge rectifier filtering, about tens kilo hertzs of output two-way frequency, phase place are 180 degree, the self-adjustable modulating pulse of pulsewidth driving switch pipe V1, V2 respectively, make them be in saturated cut-off state in turn.V1, V2 constitute half-bridge with big capacity electrochemical capacitor and are connected, load circuit is EI22 and EI33, former limit winding, the sensed EI33 secondary of this pulse square wave winding, required DC power supply of charging and IC1, IC2 boost voltage are provided behind filtering high-frequency rectifier, because of conversion process is mainly finished by V1, V2, so be called the half-bridge driven mode.
Two, work indication loop: after AC power was connected, LED1 sent the indication of ruddiness power supply.When storage battery charges, R30, R41, R40, R31, R2 constitutes voltage sample circuit, supply with integrated operational amplifier IC1 input, by the red led work in the amplifier output high level driving LED 2, constantly the gap flicker is a flash-point, be designated as redness this moment, when charging finishes, R2, R3, R31, R41 constitutes the loop of voltage sampling, supply with integrated operational amplifier IC2 (LM324) input, by the green indicating lamp in the input amplifier output high level driving LED 2 bright (red light among the LED2 extinguishes simultaneously), when power supply is in zero load, by R3, R40, R2 constitutes the loop of voltage sampling, supplies with two operational amplifier inputs among the integrated operational amplifier IC2 (LM324), red in the driving LED 2 simultaneously, green light is simultaneously bright, is designated as yellow this moment.
Three, its main feature: this circuit is during because of protective circuit action or own fault; V1, V2 base stage are not worked because of there being the square wave of driving; circuit is in closed condition, and sort circuit is called it and is encouraged working method, can protect effectively to be recharged storage battery and not to be subjected to the overvoltage rush of current.
Four, concrete operation principle and process: after main power source was connected, the 300V direct voltage formed DC channel through R6, R7, R8, R9, the preferential conducting of V2, because EI22 (6), (8) winding end relation of the same name, make the further conducting of V2, produce strong positive feedback, make V2 enter saturation condition.EI22, (9) among the EI33, (7), (5), (6) electric current also increase rapidly (wherein EI33 by 300V through C4-(6) pin-(5) pin-EI22, (7) pin-(9) pin-direct current 300V ground connection), because the C4 charging is finished, the EI22 induced voltage disappears, V2 can't continue to keep saturation condition and enter magnifying state, this moment EI22 (7), (9) the pin electric current begins to reduce, then producing negative induced voltage in EI22 ends V2 rapidly, the rapid conducting of V1, produce a strong positive feedback process again, make the V1 state that reaches capacity, produce self-oscillation one by one repeatedly with this, because the electric current among the EI33 changes, make secondary produce an induced voltage and behind rectifying and wave-filtering, offer IC1 (TL494), IC2 (LM324) operating voltage, again by (8) of IC1 (TL494), (11) pin output pulse square wave string is through V3, V4 amplifies rear drive V1, V2, make V1, V2 converts it again to and encourages working method, promptly be controlled by IC1 (TL494), regulate charging voltage and electric current by changing its pulse duration by the detected current and voltage signals of IC1 (TI494).
The characteristics of flash-point pulse spacing formula charger:
One, output over-current over-voltage protection; when storage battery charging current during greater than setting (owing to be recharged the storage battery fault be short-circuited), power on 15 pin that the voltage rise height offers IC1 (TL494) of R30 make IC1 (TL494) drive square wave to weaken or stop (stopping during short circuit).Owing to be provided with the inter-train pause charging circuit in the charging circuit, storage battery is carried out pulse spacing formula charging, was a charge cycle as operating state with about 2 seconds, first second with the current charges about 1A, and second second with the current charges about 3A, this charging modes, can reduce damage to storage battery, and can guarantee fully capacity sufficient of storage battery, the useful life of improving storage battery widely, and old and feeble storage battery had the reparation activation.
Two, prevent that storage battery from overcharging; when battery voltage rises to the stop voltage such as the 44V left and right sides; the sampling loop that R22, R25, R26, R27, R28 constitute is supplied with integrated operational amplifier IC1 (TL494) input; making IC1 (TL494) drive square wave stops; thereby guarantee that output voltage is not more than stop voltage 44V, promptly protects storage battery to be unlikely and overcharges.
Three, short circuit of charger own and heat protection, electric power loop FU1 and RT do overcurrent protection and heat protection, can guarantee the charging circuit operate as normal.
Four, owing to be provided with the flash-point indicating circuit, it is more directly perceived eye-catching to make battery charger do indication.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is a flash-point pulse spacing formula charger schematic diagram.
Fig. 2 is a flash-point pulse spacing formula charger electronic circuit schematic diagram.
Embodiment
With reference to accompanying drawing 1,2, flash-point pulse spacing formula charger construction has charger case 1, charger case 1 is provided with heat radiation window 4, thermal window is provided with dustproof slanting baffle, protection dirt is effective, device has power input line 2 on the charger case 1, be connected with the input outer power plug, power input line links to each other with the charger electronic circuit board, storage battery charging plug 6 links to each other with charger output DC+, DC-by connecting line 5, and device has charger electronic circuit board, charger electronic circuit and electronics unit, device in the charger case 1.The charger electronic circuit is made up of power rectifier circuit, oscillating circuit, oscillation control circuit (overcurrent-overvoltage protecting circuit), pulse spacing charging circuit, flash-point indicating circuit.
Power rectifier circuit comprises capacitor C 1, C2, filter capacitor C5, linear filter LF1, bridge rectifier D1～D4, fuse RT, thermistor FU1.Power firestreak ACL, zero line CAN link to each other with filter LF1 input by fuse RT, thermistor FU1 respectively, filter LF1 input is connected with high-frequency filter capacitor C1, filter LF1 output links to each other with bridge rectifier D1～D4 input, and bridge rectifier D1～D4 output is connected with filter capacitor C5.
Oscillating circuit comprises self-maintained circuit, output supply integrated package operating circuit, output charge power supply circuit.It is special-purpose pulse modulation integrated circuit (IC) 1, integrated operational amplifier (having four inputs) IC2 working power circuit that the integrated package operating circuit is supplied with in output.Self-maintained circuit comprises diode D5, D6, D7, D11, large power triode V1, V2, resistance R 1, R4～R11, capacitor C 3, C4, C6, C7, C8, switch transformer EI22, EI33; Output is supplied with the integrated package operating circuit and is comprised diode D9, D10, capacitor C 6; Output charge power supply circuit comprises half-bridge D15, filter inductance EI28.Be parallel with diode D6 in the circuit between the collector electrode of large power triode V1 and the emitter, it act as eliminates switch transformer EI22, the reverse self induction electromotive force of EI33, be connected with R5 between the collector electrode of large power triode V1 and the emitter, R6, R7, diode D4, D5 series connection back links to each other with R7 with the C8 parallel connection, play positive feedback effect, D5, C8 links to each other with 10 pin of EI22, be parallel with D7 between the collector electrode of large power triode V2 and the emitter, be connected with R8, R9, R10, it is in parallel after resistance R 11 is connected with D11 with C7, one end and R8, R9, R10 links to each other, the other end links to each other with 6 pin of EI22, the emitter of V1 links to each other with the collector electrode of V2, link to each other with 9 pin of EI22 simultaneously, 1 pin of switch transformer EI33 links to each other with D10,2 pin link to each other with D9,3 pin link to each other with C6, D10, D9, the C6 other end and IC1, IC2 integrated package supply pin and R1 with after C3 connects again with 5 of EI33,6 pin also connect, the rectifier power source output links to each other with 6 pin of EI33 by C4,11 of EI33,12 pin are connected with half-bridge D15 input respectively, the output of half-bridge D15 links to each other with filter inductance EI28, and the E128 output links to each other with charging circuit positive pole (DC+).
Oscillation control circuit comprises special-purpose pulse modulation integrated circuit (IC) 1, resistance R 13, R16～R30, R33, R**, R*, capacitor C 9, C10, C12～C16, diode D11～D14, D16, D17, triode V3, V4, V5.IC1 can adopt TL494, SG3524 etc.
The pulse spacing charging circuit comprises pulse modulation integrated circuit (IC) 1, resistance R 51, R52, R53, R54, R55, R56, triode V5, capacitor C 50.
Be parallel with diode D11 in the circuit between the collector electrode of V3 and the emitter, the collector electrode of V3 links to each other with 5 pin of EI22, the collector electrode of V4 and emitter parallel diode D14, the collector electrode of V4 links to each other with 3 pin of EI22,4 pin of EI22 link to each other with R12, and V3 links to each other with the emitter of V4 and links to each other with D13, D13 with connect power cathode after D12 links to each other, the base stage of V3 links to each other with 8 pin of IC1, and the base stage of V4 links to each other and links to each other with R17 with 11 pin of IC1.1 pin of IC2 and the base stage of receiving V5 after R51 links to each other, the base stage of V5 links to each other with power cathode by R52, the collector electrode of V5 links to each other with 15 pin of IC1 by R53, the other end of R53 leads to R54, R55 and links to each other with the emitter of V5, the other end of R54, R55 links to each other with R56, C50, the other end of C50 (positive pole) links to each other with 12 pin of IC1, and the other end of R56 links to each other with power cathode.1 pin and the R26 of IC1, C13, R*, C4, R27, D16, D17 links to each other, 2 pin and the R21 of IC1, R22, R25 links to each other, connect 3 pin of IC1 after R21 and the C11 series connection and link to each other with R23,4 pin and the R20 of IC1, C15, R24 links to each other, the other end of R20 links to each other with power cathode, 5 pin of IC1 link to each other with C10, another termination power cathode of C10,6 pin of IC1 link to each other with R19, the other end of R19 links to each other with power cathode, 7 pin of IC1 connect power cathode, 8 pin and the R16 of IC1, R18, C9, the base stage of V3 links to each other, 9 of IC1,10 pin directly connect power cathode, 11 of IC1,12 pin are parallel with R15, and 11 pin of IC1 link to each other with the base stage of V4,12 pin of IC1 directly connect positive source, IC1 13 in parallel with 14 pin and and R33, D16, C15, R24, R22 links to each other, 14 of IC1,15 pin are parallel with resistance R 14,15 pin and the C12 of IC1, R13, R
*Link to each other, wherein R13, R
*Be connected to R30 after being in parallel, 3 pin, 9 pin, 10 pin that connect EI33 again, the other end of R30 links to each other with power cathode, C12 and 3 pin and 15 pin that are parallel to IC1 after R23 connects, connect with R28 again after C14 and the R27 parallel connection and receive the positive pole of charge power supply, 16 pin of IC1 connect power cathode, and charge power supply positive and negative electrode two ends R29, C16 in parallel are used for discharge.
The flash-point indicating circuit comprises four input integrated operational amplifier IC2, indicator light LED1, LED2, resistance R 2, R3, R32, R34～R36, R39～R42, R50, diode D18, D19, capacitor C 18, C19, triode V6.IC2 can adopt operational amplifier LM324 etc., be connected with resistance R 2 between 3 pin of IC2 and 5 pin in the circuit, 5 pin of IC2 are connected with R32, R3, and 6 pin of IC2 are connected with D18, R31,7 pin of IC2 are connected with R35, R36, and R35, R36 link to each other with LED2, triode V6.The collector electrode of triode V6 links to each other with LED2, R35, R36, emitter connects power cathode, base stage links to each other with 1 pin of IC2 by R50, be connected with capacitor C 19 between 8 pin of IC2 and 9 pin, 8 pin of IC2 link to each other with R36, are connected to the negative terminal of ic chip 2 after 10,11 pin of IC2 link to each other, and 13 pin of IC2 link to each other with 8 pin and link to each other with R36,14 pin of IC2 link to each other with D19, R42, and C18 links to each other with D19, D17.
Claims (3)
1, a kind of flash-point pulse spacing formula charger, has charger case, device has charger electronic circuit board, charger electronic circuit in the charger case, it is characterized in that the charger electronic circuit is made up of power rectifier circuit, oscillating circuit, oscillation control circuit, pulse spacing charging circuit, flash-point indicating circuit;
Power rectifier circuit comprises that capacitor C 1, C2, C5, linear filter LF1, bridge rectifier D1～D4, power firestreak ACL, zero line CAN link to each other with filter LF1 input by fuse RT, thermistor FU1 respectively, filter LF1 input is connected with high-frequency filter capacitor C1, filter LF1 output links to each other with bridge rectifier D1～D4 input, and bridge rectifier D1～D4 output is connected with filter capacitor C5;
Oscillating circuit comprises self-maintained circuit, output supply integrated package operating circuit, output charge power supply circuit; Self-maintained circuit comprises diode D5, D6, D7, D11, large power triode V1, V2, resistance R 1, R4～R11, capacitor C 3, C4, C6, C7, C8, switch transformer EI22, EI33; Output is supplied with the integrated package operating circuit and is comprised diode D9, D10, capacitor C 6; Output charge power supply circuit comprises half-bridge D15, filter inductance EI28; Be parallel with diode D6 in the circuit between the collector electrode of large power triode V1 and the emitter, be connected with R5 between the collector electrode of large power triode V1 and the emitter, R6, R7, diode D4, D5 series connection back links to each other with R7 with the C8 parallel connection, D5, C8 links to each other with 10 pin of EI22, be parallel with D7 between the collector electrode of large power triode V2 and the emitter, be connected with R8 between the collector electrode of V2 and the base stage, R9, R10, it is in parallel after resistance R 11 is connected with D11 with C7, one end and R8, R9, R10 links to each other, the other end links to each other with 6 pin of EI22, the emitter of V1 links to each other with the collector electrode of V2, link to each other with 9 pin of EI22 simultaneously, 1 pin of switch transformer EI33 links to each other with D10,2 pin link to each other with D9,3 pin link to each other with C6, D10, D9, the C6 other end and IC1, IC2 integrated package supply pin and R1 with after C3 connects again with 5 of EI33,6 pin also connect, the rectifier power source output links to each other with 6 pin of EI33 by C4,11 of EI33,12 pin are connected with half-bridge D15 input respectively, the output of half-bridge D15 links to each other with filter inductance EI28, and the EI28 output links to each other with the anodal DC+ of charging circuit;
Oscillation control circuit comprises special-purpose pulse modulation integrated circuit (IC) 1, resistance R 13, R16～30, R
*, R
*, capacitor C 9, C10, C12～16, diode D11～14, D16, D17, triode V3, V4, V5;
The pulse spacing charging circuit comprises pulse modulation integrated circuit (IC) 1, resistance R 51, R52, R53, R54, R55, R56, triode V5, capacitor C 50;
Be parallel with diode D11 in the circuit between the collector electrode of triode V3 and the emitter, the collector electrode of V3 links to each other with 5 pin of EI22, the collector electrode of V4 and emitter parallel diode D14, the collector electrode of V4 links to each other with 3 pin of EI22,4 pin of EI22 link to each other with R12, and V3 links to each other with the emitter of V4 and links to each other with D13, D13 with connect power cathode after D12 links to each other, the base stage of V3 links to each other with 8 pin of IC1, and the base stage of V4 links to each other and links to each other with R17 with 11 pin of IC1.1 pin of IC2 and the base stage of receiving V5 after R51 links to each other, the base stage of V5 links to each other with power cathode by R52, the collector electrode of V5 links to each other with 15 pin of IC1 by R53, the other end of R53 leads to R54, R55 and links to each other with the emitter of V5, the other end of R54, R55 links to each other with R56, C50, the other end of C50 (positive pole) links to each other with 12 pin of IC1, and the other end of R56 links to each other with power cathode, 1 pin of IC1 and R26, C13, R
*C4, R27, D16, D17 links to each other, 2 pin and the R21 of IC1, R22, R25 links to each other, connect 3 pin of IC1 after R21 and the C11 series connection and link to each other with R23,4 pin and the R20 of IC1, C15, R24 links to each other, the other end of R20 links to each other with power cathode, 5 pin of IC1 link to each other with C10, another termination power cathode of C10,6 pin of IC1 link to each other with R19, and the other end of R19 links to each other with power cathode, and 7 pin of IC1 connect power cathode, 8 pin and the R16 of IC1, R18, C9, the base stage of V3 links to each other, 9 of IC1,10 pin directly connect power cathode, 11 of IC1,12 pin are parallel with R15, and 11 pin of IC1 link to each other with the base stage of V4,12 pin of IC1 directly connect positive source, IC1 13 in parallel with 14 pin and and R33, D16, C15, R24, R22 links to each other, 14 of IC1,15 pin are parallel with resistance R 14,15 pin and the C12 of IC1, R13, R
*Link to each other, wherein R13, R
*Be connected to R30 after being in parallel, 3 pin, 9 pin, 10 pin that connect EI33 again, the other end of R30 links to each other with power cathode, C12 and 3 pin and 15 pin that are parallel to IC1 after R23 connects, connect with R28 again after C14 and the R27 parallel connection and receive the positive pole of charge power supply, 16 pin of IC1 connect power cathode, and charge power supply positive and negative electrode two ends R29, C16 in parallel are used for discharge;
The flash-point indicating circuit comprises four input integrated operational amplifier IC2, indicator light LED1, LED2, resistance R 2, R3, R32, R34～R36, R39～R42, R50, diode D18, D19, capacitor C 18, C19, triode V6, be connected with resistance R 2 between 3 pin of IC2 and 5 pin in the circuit, 5 pin and the R32 of IC2, R3 connects, 6 pin and the D18 of IC2, R31 connects, 7 pin and the R35 of IC2, R36 connects, R35, R36 and LED2, triode V6 links to each other, the collector electrode of triode V6 and LED2, R35, R36 links to each other, emitter connects power cathode, base stage links to each other with 1 pin of IC2 by R50, be connected with capacitor C 19 between 8 pin of IC2 and 9 pin, 8 pin of IC2 link to each other with R36,10 of IC2, after linking to each other, 11 pin are connected to the negative terminal of ic chip 2,13 pin of IC2 link to each other with 8 pin and link to each other with R36,14 pin and the D19 of IC2, R42 links to each other, C18 and D19, D17 links to each other.
2, flash-point pulse spacing formula charger according to claim 1 is characterized in that charger case is provided with the heat radiation window, and the thermal window device has dustproof slanting baffle.
3, flash-point pulse spacing formula charger according to claim 1 is characterized in that device has attaching plug on the charger case, the storage battery charging plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062229 CN2735632Y (en) | 2004-06-29 | 2004-06-29 | Flash-point pulse interval charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062229 CN2735632Y (en) | 2004-06-29 | 2004-06-29 | Flash-point pulse interval charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735632Y true CN2735632Y (en) | 2005-10-19 |
Family
ID=35265493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420062229 Expired - Fee Related CN2735632Y (en) | 2004-06-29 | 2004-06-29 | Flash-point pulse interval charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735632Y (en) |
-
2004
- 2004-06-29 CN CN 200420062229 patent/CN2735632Y/en not_active Expired - Fee Related
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