CN204835585U - Charging circuit of lithium cell group is pressed in synchronous lift - Google Patents
Charging circuit of lithium cell group is pressed in synchronous lift Download PDFInfo
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- CN204835585U CN204835585U CN201520488283.9U CN201520488283U CN204835585U CN 204835585 U CN204835585 U CN 204835585U CN 201520488283 U CN201520488283 U CN 201520488283U CN 204835585 U CN204835585 U CN 204835585U
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Abstract
The utility model discloses an including 1224V input circuit, 12 24V input circuit is connected with PWM modulated circuit, energy storage rectifier circuit, constant voltage constant current circuit, output control circuit, output charging circuit in order, PWM modulated circuit and constant voltage constant current circuit are connected, energy storage rectifier circuit and output control circuit are connected, energy storage rectifier circuit still is connected with input peak current sampling circuit, the input peak current sampling circuit be connected with PWM modulated circuit. Have voltage input circuit and output control circuit and close when not inserting charging source and fill the electrical output mouth, reduce the group battery from power consumptive, open when having the voltage input of charging and fill the electrical output mouth and charge for the battery, this practicality is that both convenience of customers uses, the capacity that can guarantee the group battery again can not be when not charging the loss fall the self -adaptation 1224V charging circuit of lithium cell group is pressed in synchronous lift of group battery electric quantity.
Description
[technical field]
The present invention relates to a kind of synchronization lifting pressure lithium battery group charging circuit, belong to the renovation technique of lithium battery group charging circuit.
[background technology]
Along with the change of people's living standard, various digital products gets more and more, the function of large-size screen monitors smart mobile phone gets more and more simultaneously, use also further frequent, the service time of battery is just shorter and shorter, therefore when carrying out outdoor activities, easily cause the digital products such as mobile phone because shutting down without electricity, car emergency startup power supply gets more and more on the market now, the emergency starting Power supply belt exported with 5V voltage can be used for digital product charging, when open air driving emergency starting power supply does not have electricity will charge to emergency starting power-supply battery group with automobile power source, and the voltage that the power supply of automobile has 12V with 24V different, this just requires can to batteries charging when automatically can adapt to different input voltages.
[summary of the invention]
Instant invention overcomes the deficiency of above-mentioned technology, provide a kind of synchronization lifting pressure lithium battery group charging circuit, the charge closing output port when not accessing charge power supply with voltage input circuit and output control circuit, reduce battery pack from power consumption, open charging output port when having charging voltage to input to charge the battery, this practicality had both been user-friendly to, and can ensure that again the capacity of battery pack can not lose the self adaptation 12/24V synchronization lifting pressure lithium battery group charging circuit of battery electric quantity when not charging.
For achieving the above object, present invention employs following technical proposal:
A kind of synchronization lifting pressure lithium battery group charging circuit, include 12/24V input circuit 2, described 12/24V input circuit 2 is connected with PWM circuit 1, energy storage rectification circuit 3, constant pressure and flow circuit 5, output control circuit 6 in turn, exports charging circuit 7, described PWM circuit 1 is connected with constant pressure and flow circuit 5, described energy storage rectification circuit 3 is connected with output control circuit 6, described energy storage rectification circuit 3 is also connected with input peak current sample circuit 4, and described input peak current sample circuit 4 is connected with PWM circuit 1.
Described PWM circuit 1 includes chip U1,1. the pin of described chip U1 is connected with phototriode U3B collector electrode, phototriode U3B grounded emitter, the pin of described chip U1 2. with pin 5. ground connection, 3. the pin of described chip U1 is connected with input peak current sample circuit 4, the pin of described chip U1 is 4. by electric capacity C3 ground connection, and 6. the pin of described chip U1 is connected with energy storage rectification circuit 3, and 7. the pin of described chip U1 is connected with 12/24V input circuit 2.
Described 12/24V input circuit 2 includes input INPUT+ and input point INPUT-, and described input INPUT+ is respectively by electric capacity C1 and electrochemical capacitor C2 ground connection, and described input INPUT+ is connected with PWM circuit 1, described input INPUT-ground connection.
Described energy storage rectification circuit 3 includes field effect transistor Q1 and energy storage coil L1, the grid of described field effect transistor Q1 respectively with diode D1 positive terminal, resistance R4 one end connects, diode D1 negative pole end is connected with PWM circuit 1, resistance R4 other end ground connection, resistance R3 and diode D1 is connected in parallel, the source electrode of described field effect transistor Q1 is connected with input peak current sample circuit 4, the drain electrode of described field effect transistor Q1 respectively with energy storage coil L1 one end, diode D2 positive terminal connects, the energy storage coil L1 other end is connected with PWM circuit 1, diode D2 negative pole end is connected with electrochemical capacitor C6 one end, the electrochemical capacitor C6 other end is connected with the energy storage coil L1 other end, resistance R10 and electrochemical capacitor C6 is connected in parallel.
Described input peak current sample circuit 4 includes operational amplifier U6B, the pin of described operational amplifier U6B 5. respectively with electric capacity C4 one end, resistance R8 one end connects, electric capacity C4 other end ground connection, the resistance R8 other end is by resistance R9 ground connection, the resistance R8 other end and energy storage rectification circuit 3, the pin of described operational amplifier U6B 6. respectively with resistance R6 one end, resistance R7 one end connects, 7. the resistance R6 other end is connected with the pin of operational amplifier U6B, described resistance R7 other end ground connection, 7. the pin of described operational amplifier U6B is connected with resistance R5 one end, the resistance R5 other end is connected with PWM circuit 1, the resistance R5 other end is by electric capacity C5 ground connection.
Described constant pressure and flow circuit 5 includes pressurizer U2, operational amplifier U4A and operational amplifier U4B, voltage stabilizing didoe U2 pin 3. respectively with energy storage rectification circuit 3, resistance R15B one end connects, the resistance R15B other end respectively with output control circuit 6, resistance R14 one end connects, resistance R15A and resistance R15B is connected in parallel, 2. described resistance R14 is connected with the pin of voltage stabilizing didoe U2 respectively by electric capacity C7, to be held with charge power supply positive terminal CHG+ by resistance R13 and be connected, electric capacity C8 and resistance R13 is connected in parallel, 1. the resistance R14 other end is connected with the pin of voltage stabilizing didoe U2, 2. 2. the pin of described voltage stabilizing didoe U2 be connected with the pin of light-emitting diode U3A by resistance R11, 1. the pin of described light-emitting diode U3A is held with charge power supply positive terminal CHG+ respectively, energy storage rectification circuit 3 connects, resistance R12 and light-emitting diode U3A is connected in parallel, described light-emitting diode U3A pin is 2. by the collector electrode of resistance R20 and triode Q4, 1. triode Q4 base stage is connected with operational amplifier U4A pin respectively by resistance R21, be connected with PWM circuit 1 with the emitter of the emitter connecting triode Q4 of triode Q4 by resistance R22, 8. the pin of described operational amplifier U4A to be held with charge power supply positive terminal CHG+ respectively by resistance R23 and is connected, 4. be connected with the pin of operational amplifier U4A by electric capacity C9, 4. described operational amplifier U4A pin is connected with the emitter of triode Q4, 2. the pin of described operational amplifier U4A is held with charge power supply positive terminal CHG+ by resistance R24 and is connected, 2. 2. described operational amplifier U4A pin be connected with voltage stabilizing didoe U5 pin, 2. 1. voltage stabilizing didoe U5 pin be connected with its pin, electric capacity C10 be connected in parallel and voltage stabilizing didoe U5 pin 2. and pin 3. between, 3. voltage stabilizing didoe U5 pin is connected with the emitter of triode Q4, 7. 3. described operational amplifier U4A pin be connected with operational amplifier U4B pin, 6. 7. described operational amplifier U4B pin be connected with its pin by resistance R25, 6. described operational amplifier U4B pin is connected with triode Q4 emitter by resistance R26, 5. described operational amplifier U4B pin is connected with output control circuit 6 respectively by resistance R27, be connected with triode Q4 emitter by electric capacity C11.
Described output control circuit 6 includes field effect device Q3 and triode Q2, described triode Q2 emitter respectively with constant pressure and flow circuit 5, export charging circuit 7 to connect, described triode Q2 emitter is connected with triode Q2 base stage by resistance R17, described triode Q2 base stage is drained by resistance 16 field effect transistor Q3 and connects, described triode Q2 collector electrode is connected with the grid of field effect transistor Q3 by resistance R18, described field effect transistor Q3 grid is connected with its source electrode by resistance R19, described field effect transistor Q3 drain electrode is connected with constant pressure and flow circuit 5, described field effect transistor Q3 source electrode is connected with output charging circuit 7.
Compared with prior art, the invention has the beneficial effects as follows:
The utility model input can be connected on the automobile batteries of any type of 12/24V voltage by circuit board internal conversion circuit, the direct current 12.6V voltage that 12/24V voltage transitions becomes to need is exported to the 3-4 string batteries charging inside car emergency startup power supply; Can bio-occlusion 3-4 series lithium battery group charging charging when input port access charging voltage, the output port that charges when input port does not have power supply input turn off output quit work reduce from power consumption be 0, reduction energy consumption environmental protection; The utility model is that a kind of circuit design is ingenious, the self adaptation 12/24V synchronization lifting pressure lithium battery group charging circuit of function admirable.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
[embodiment]
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technical staff of the same trade:
As shown in Figure 1, a kind of synchronization lifting pressure lithium battery group charging circuit, it is characterized in that: include 12/24V input circuit 2, described 12/24V input circuit 2 is connected with PWM circuit 1, energy storage rectification circuit 3, constant pressure and flow circuit 5, output control circuit 6 in turn, exports charging circuit 7, described PWM circuit 1 is connected with constant pressure and flow circuit 5, described energy storage rectification circuit 3 is connected with output control circuit 6, described energy storage rectification circuit 3 is also connected with input peak current sample circuit 4, and described input peak current sample circuit 4 is connected with PWM circuit 1.
As shown in Figure 2, described PWM circuit 1 includes chip U1,1. the pin of described chip U1 is connected with phototriode U3B collector electrode, phototriode U3B grounded emitter, the pin of described chip U1 2. with pin 5. ground connection, 3. the pin of described chip U1 is connected with input peak current sample circuit 4, and the pin of described chip U1 is 4. by electric capacity C3 ground connection, 6. the pin of described chip U1 is connected with energy storage rectification circuit 3, and 7. the pin of described chip U1 is connected with 12/24V input circuit 2.
Described 12/24V input circuit 2 includes input INPUT+ and input point INPUT-, and described input INPUT+ is respectively by electric capacity C1 and electrochemical capacitor C2 ground connection, and described input INPUT+ is connected with PWM circuit 1, described input INPUT-ground connection.
Described energy storage rectification circuit 3 includes field effect transistor Q1 and energy storage coil L1, the grid of described field effect transistor Q1 respectively with diode D1 positive terminal, resistance R4 one end connects, diode D1 negative pole end is connected with PWM circuit 1, resistance R4 other end ground connection, resistance R3 and diode D1 is connected in parallel, the source electrode of described field effect transistor Q1 is connected with input peak current sample circuit 4, the drain electrode of described field effect transistor Q1 respectively with energy storage coil L1 one end, diode D2 positive terminal connects, the energy storage coil L1 other end is connected with PWM circuit 1, diode D2 negative pole end is connected with electrochemical capacitor C6 one end, the electrochemical capacitor C6 other end is connected with the energy storage coil L1 other end, resistance R10 and electrochemical capacitor C6 is connected in parallel.
Described input peak current sample circuit 4 includes operational amplifier U6B, the pin of described operational amplifier U6B 5. respectively with electric capacity C4 one end, resistance R8 one end connects, electric capacity C4 other end ground connection, the resistance R8 other end is by resistance R9 ground connection, the resistance R8 other end and energy storage rectification circuit 3, the pin of described operational amplifier U6B 6. respectively with resistance R6 one end, resistance R7 one end connects, 7. the resistance R6 other end is connected with the pin of operational amplifier U6B, described resistance R7 other end ground connection, 7. the pin of described operational amplifier U6B is connected with resistance R5 one end, the resistance R5 other end is connected with PWM circuit 1, the resistance R5 other end is by electric capacity C5 ground connection.
Described constant pressure and flow circuit 5 includes pressurizer U2, operational amplifier U4A and operational amplifier U4B, voltage stabilizing didoe U2 pin 3. respectively with energy storage rectification circuit 3, resistance R15B one end connects, the resistance R15B other end respectively with output control circuit 6, resistance R14 one end connects, resistance R15A and resistance R15B is connected in parallel, 2. described resistance R14 is connected with the pin of voltage stabilizing didoe U2 respectively by electric capacity C7, to be held with charge power supply positive terminal CHG+ by resistance R13 and be connected, electric capacity C8 and resistance R13 is connected in parallel, 1. the resistance R14 other end is connected with the pin of voltage stabilizing didoe U2, 2. 2. the pin of described voltage stabilizing didoe U2 be connected with the pin of light-emitting diode U3A by resistance R11, 1. the pin of described light-emitting diode U3A is held with charge power supply positive terminal CHG+ respectively, energy storage rectification circuit 3 connects, resistance R12 and light-emitting diode U3A is connected in parallel, described light-emitting diode U3A pin is 2. by the collector electrode of resistance R20 and triode Q4, 1. triode Q4 base stage is connected with operational amplifier U4A pin respectively by resistance R21, be connected with PWM circuit 1 with the emitter of the emitter connecting triode Q4 of triode Q4 by resistance R22, 8. the pin of described operational amplifier U4A to be held with charge power supply positive terminal CHG+ respectively by resistance R23 and is connected, 4. be connected with the pin of operational amplifier U4A by electric capacity C9, 4. described operational amplifier U4A pin is connected with the emitter of triode Q4, 2. the pin of described operational amplifier U4A is held with charge power supply positive terminal CHG+ by resistance R24 and is connected, 2. 2. described operational amplifier U4A pin be connected with voltage stabilizing didoe U5 pin, 2. 1. voltage stabilizing didoe U5 pin be connected with its pin, electric capacity C10 be connected in parallel and voltage stabilizing didoe U5 pin 2. and pin 3. between, 3. voltage stabilizing didoe U5 pin is connected with the emitter of triode Q4, 7. 3. described operational amplifier U4A pin be connected with operational amplifier U4B pin, 6. 7. described operational amplifier U4B pin be connected with its pin by resistance R25, 6. described operational amplifier U4B pin is connected with triode Q4 emitter by resistance R26, 5. described operational amplifier U4B pin is connected with output control circuit 6 respectively by resistance R27, be connected with triode Q4 emitter by electric capacity C11.
Described output control circuit 6 includes field effect device Q3 and triode Q2, described triode Q2 emitter respectively with constant pressure and flow circuit 5, export charging circuit 7 to connect, described triode Q2 emitter is connected with triode Q2 base stage by resistance R17, described triode Q2 base stage is drained by resistance 16 field effect transistor Q3 and connects, described triode Q2 collector electrode is connected with the grid of field effect transistor Q3 by resistance R18, described field effect transistor Q3 grid is connected with its source electrode by resistance R19, described field effect transistor Q3 drain electrode is connected with constant pressure and flow circuit 5, described field effect transistor Q3 source electrode is connected with output charging circuit 7.
Operation principle is as follows:
When not accessing automobile power source to batteries charging between the charging output port CHGout+CHGout-that battery pack is connected on output charging circuit 7: owing to not accessing charge power supply, the chip U1 in PWM circuit 1 is caused not work, field effect transistor Q1 closes, energy storage coil L1 bis-end influence electricity kinetic potential, diode D2 is caused to end, diode D2 negative terminal and charge power supply positive pole CHG+ voltage are 0, triode Q2 is caused to end without base bias, and triode Q2 cut-off causes field effect transistor Q3 control gate to be pulled upward to the voltage high level of battery pack by resistance R19, field effect transistor Q3 also ends, such battery pack connects in circuit without any discharge loop, be 0 from power consumption.
Be connected between charging output port CHGout+CHGout-in battery pack, then the INPUT+ of charge power supply at 12/24V input circuit 2 is accessed, when giving batteries charging between INPUT-: 12/24V input voltage is by charging input end mouth INPUT+INPUT-place in circuit, 7. the pin that positive supply arrives chip U1 from INPUT+ end powers to chip U1, PWM circuit 1 normally works, 7. the pin of chip U1 exports high level and causes field effect transistor Q1 conducting, after field effect transistor Q1 conducting, positive supply arrives the drain electrode end of field effect transistor Q1 by energy storage coil L1, arrive the Q1 source terminal of field effect transistor again, INPUT-end is arrived thus the input major loop of forming circuit by the resistance R9 in input peak current sample circuit 4:
Charging input end mouth INPUT+ → energy storage coil L1 → field effect transistor Q1 drain electrode → field effect transistor Q1 source electrode → resistance R9 → charging input end mouth INPUT-.
Scene effect pipe Q1 conducting moment input current change on energy storage coil L1, form just lower negative induced electromotive force to stop the electric current instantaneous variation on energy storage coil L1, by operational amplifier U6B and resistance R6 after the electric current on current sampling resistor R9 reaches 1/ (1+R6/R5) * R9, resistance R7, resistance R8, when the operational amplification circuit that electric capacity C4 forms amplifies that 7. output voltage reaches 1V by the pin of operational amplifier U6B, 6. the pin of current type PWM modulation circuit 1 chips U1 exports and overturn by high level is low level, field effect transistor Q1 is caused to turn off, induced electromotive force on the moment energy storage coil L1 turned off just is stoping the reduction of coil current under being turned into and bearing, the upper negative lower positive induced electromotive force on energy storage coil L1 is ended due to field effect transistor Q1, by diode D2, electric capacity C6 rectification exports and is added in CHG+ just negative two ends with INPUT+, because the negative pole of diode D2 is added to positive voltage, cause triode Q2 conducting thus cause field effect transistor Q3 conducting, such electromotive force is by diode D2 rectification, be added to by field effect transistor Q3 again between CHGout+ and CHGout-exporting charging circuit 7 and form upper negative lower positive output voltage to batteries charging, loop is
Just → diode D2 → field effect transistor Q3 under energy storage coil L1 → CHGout+ → battery anode → battery electrode → R15A and R15B is also negative on joint group → energy storage coil L1.
Close at above-mentioned field effect transistor Q1 and have no progeny, due to no current no-voltage on input peak current sample resistance R9, cause the chip U1 pin of PWM circuit 7. again from low level upset for export high level cause field effect transistor Q1 conducting, from and next field effect transistor Q1 reach to current detecting the cyclic process that set point closes field effect transistor Q1 more again from conducting.
Constant voltage process: giving the induction power supply of energy storage coil L1 through diode D2, while giving the process of batteries charging after electric capacity C6 rectification, circuit voltage sampling by resistance R13 and resistance R14 dividing potential drop to the benchmark pin of voltage stabilizing didoe U2 1., the overtension of output is represented when the branch pressure voltage sampling setting reaches more than 2.5V, the pin of voltage stabilizing didoe U2 2. and pin 3. between have a stable unsaturation electric current and pass through, this just causes the built-in LEDs ON of optocoupler U3A luminous, then the pin being applied to the internal resistance photosensor conducting of U3B i.e. U3B by the photoelectric coupling of optocoupler 3. with pin 4. conducting, 1. the chip U1 pin of PWM circuit 1 is pulled down to ground, at this moment 6. the pin of chip U1 not only can be transformed into low level from high level this just makes field effect transistor Q1 but also cut-off, ON time shortens, thus output charging voltage is declined, thus reach the object of constant voltage,
Resistance R13 voltage is high → voltage stabilizing didoe U2 conducting → light-emitting diode U3A conducting → phototriode U3B conducting → PWM circuit 1 chips U1 pin 6 step-down level → field effect transistor Q1 closedown → field effect transistor Q1 ON time shortens → energy storage coil L1 on induced voltage decline → diode D2 rectification export charging voltage and decline.
Constant current process: giving the induction power supply of energy storage coil L1 through diode D2, while giving the process of batteries charging after electric capacity C6 rectification, charging current is by parallel resistance R15A//R15B coating-forming voltage on R15A//R15B, arrive operational amplifier U4A after the operation amplifier of this voltage by operational amplifier U4B to compare, represent that when the voltage after amplifying meets or exceeds more than the 2.5V of voltage stabilizing didoe U5 setting output charging current is excessive, 1. the pin of operational amplifier U4A can export high level, thus make triode Q4 conducting, just cause the built-in LEDs ON of optocoupler U3A luminous after triode Q4 conducting, then the internal resistance photosensor conducting of U3B i.e. the pin 3 of U3B and pin 4 conducting is applied to by the photoelectric coupling of optocoupler, 1. the pin of PWM circuit 1 chips UC1 is pulled down to ground, at this moment the 6. pin of chip U1 can be transformed into low level from high level again, this just makes field effect transistor Q1 end again, ON time shortens, thus output charging current is declined, thus reach the object of constant current.
On parallel resistance R15A//R15B pressure drop large → operational amplifier U4A exports high level → triode Q4 conducting → voltage stabilizing didoe U3A conducting → phototriode U3B conducting → PWM circuit 1 chips U1 pin 6. step-down level → field effect transistor Q1 closedowns → field effect transistor Q1 ON time and shortens → the electric flux decline → diode D2 rectification output charging current decline of the upper induction of energy storage coil L1.
Claims (7)
1. a synchronization lifting pressure lithium battery group charging circuit, it is characterized in that: include 12/24V input circuit (2), described 12/24V input circuit (2) is connected with PWM circuit (1) in turn, energy storage rectification circuit (3), constant pressure and flow circuit (5), output control circuit (6), export charging circuit (7), described PWM circuit (1) is connected with constant pressure and flow circuit (5), described energy storage rectification circuit (3) is connected with output control circuit (6), described energy storage rectification circuit (3) is also connected with input peak current sample circuit (4), described input peak current sample circuit (4) is connected with PWM circuit (1).
2. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described PWM circuit (1) includes chip U1, 1. the pin of described chip U1 is connected with phototriode U3B collector electrode, phototriode U3B grounded emitter, the pin of described chip U1 2. with pin 5. ground connection, 3. the pin of described chip U1 is connected with input peak current sample circuit (4), the pin of described chip U1 is 4. by electric capacity C3 ground connection, 6. the pin of described chip U1 is connected with energy storage rectification circuit (3), 7. the pin of described chip U1 is connected with 12/24V input circuit (2).
3. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described 12/24V input circuit (2) includes input INPUT+ and input point INPUT-, described input INPUT+ is respectively by electric capacity C1 and electrochemical capacitor C2 ground connection, described input INPUT+ is connected with PWM circuit (1), described input INPUT-ground connection.
4. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described energy storage rectification circuit (3) includes field effect transistor Q1 and energy storage coil L1, the grid of described field effect transistor Q1 respectively with diode D1 positive terminal, resistance R4 one end connects, diode D1 negative pole end is connected with PWM circuit (1), resistance R4 other end ground connection, resistance R3 and diode D1 is connected in parallel, the source electrode of described field effect transistor Q1 is connected with input peak current sample circuit (4), the drain electrode of described field effect transistor Q1 respectively with energy storage coil L1 one end, diode D2 positive terminal connects, the energy storage coil L1 other end is connected with PWM circuit (1), diode D2 negative pole end is connected with electrochemical capacitor C6 one end, the electrochemical capacitor C6 other end is connected with the energy storage coil L1 other end, resistance R10 and electrochemical capacitor C6 is connected in parallel.
5. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described input peak current sample circuit (4) includes operational amplifier U6B, the pin of described operational amplifier U6B 5. respectively with electric capacity C4 one end, resistance R8 one end connects, electric capacity C4 other end ground connection, the resistance R8 other end is by resistance R9 ground connection, the resistance R8 other end and energy storage rectification circuit (3), the pin of described operational amplifier U6B 6. respectively with resistance R6 one end, resistance R7 one end connects, 7. the resistance R6 other end is connected with the pin of operational amplifier U6B, described resistance R7 other end ground connection, 7. the pin of described operational amplifier U6B is connected with resistance R5 one end, the resistance R5 other end is connected with PWM circuit (1), the resistance R5 other end is by electric capacity C5 ground connection.
6. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described constant pressure and flow circuit (5) includes pressurizer U2, operational amplifier U4A and operational amplifier U4B, voltage stabilizing didoe U2 pin 3. respectively with energy storage rectification circuit (3), resistance R15B one end connects, the resistance R15B other end respectively with output control circuit (6), resistance R14 one end connects, resistance R15A and resistance R15B is connected in parallel, 2. described resistance R14 is connected with the pin of voltage stabilizing didoe U2 respectively by electric capacity C7, to be held with charge power supply positive terminal CHG+ by resistance R13 and be connected, electric capacity C8 and resistance R13 is connected in parallel, 1. the resistance R14 other end is connected with the pin of voltage stabilizing didoe U2, 2. 2. the pin of described voltage stabilizing didoe U2 be connected with the pin of light-emitting diode U3A by resistance R11, 1. the pin of described light-emitting diode U3A is held with charge power supply positive terminal CHG+ respectively, energy storage rectification circuit (3) connects, resistance R12 and light-emitting diode U3A is connected in parallel, described light-emitting diode U3A pin is 2. by the collector electrode of resistance R20 and triode Q4, 1. triode Q4 base stage is connected with operational amplifier U4A pin respectively by resistance R21, be connected with PWM circuit (1) with the emitter of the emitter connecting triode Q4 of triode Q4 by resistance R22, 8. the pin of described operational amplifier U4A to be held with charge power supply positive terminal CHG+ respectively by resistance R23 and is connected, 4. be connected with the pin of operational amplifier U4A by electric capacity C9, 4. described operational amplifier U4A pin is connected with the emitter of triode Q4, 2. the pin of described operational amplifier U4A is held with charge power supply positive terminal CHG+ by resistance R24 and is connected, 2. 2. described operational amplifier U4A pin be connected with voltage stabilizing didoe U5 pin, 2. 1. voltage stabilizing didoe U5 pin be connected with its pin, electric capacity C10 be connected in parallel and voltage stabilizing didoe U5 pin 2. and pin 3. between, 3. voltage stabilizing didoe U5 pin is connected with the emitter of triode Q4, 7. 3. described operational amplifier U4A pin be connected with operational amplifier U4B pin, 6. 7. described operational amplifier U4B pin be connected with its pin by resistance R25, 6. described operational amplifier U4B pin is connected with triode Q4 emitter by resistance R26, 5. described operational amplifier U4B pin is connected with output control circuit (6) respectively by resistance R27, be connected with triode Q4 emitter by electric capacity C11.
7. a kind of synchronization lifting pressure lithium battery group charging circuit according to claim 1, it is characterized in that: described output control circuit (6) includes field effect device Q3 and triode Q2, described triode Q2 emitter respectively with constant pressure and flow circuit (5), export charging circuit (7) to connect, described triode Q2 emitter is connected with triode Q2 base stage by resistance R17, described triode Q2 base stage is drained by resistance 16 field effect transistor Q3 and connects, described triode Q2 collector electrode is connected with the grid of field effect transistor Q3 by resistance R18, described field effect transistor Q3 grid is connected with its source electrode by resistance R19, described field effect transistor Q3 drain electrode is connected with constant pressure and flow circuit (5), described field effect transistor Q3 source electrode is connected with output charging circuit (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488283.9U CN204835585U (en) | 2015-07-07 | 2015-07-07 | Charging circuit of lithium cell group is pressed in synchronous lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488283.9U CN204835585U (en) | 2015-07-07 | 2015-07-07 | Charging circuit of lithium cell group is pressed in synchronous lift |
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| Publication Number | Publication Date |
|---|---|
| CN204835585U true CN204835585U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520488283.9U Expired - Fee Related CN204835585U (en) | 2015-07-07 | 2015-07-07 | Charging circuit of lithium cell group is pressed in synchronous lift |
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| CN (1) | CN204835585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100074A (en) * | 2016-08-24 | 2016-11-09 | 广州市晨威电子科技有限公司 | A kind of constant pressure and constant flow control device based on current driving circuit |
-
2015
- 2015-07-07 CN CN201520488283.9U patent/CN204835585U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100074A (en) * | 2016-08-24 | 2016-11-09 | 广州市晨威电子科技有限公司 | A kind of constant pressure and constant flow control device based on current driving circuit |
| CN106100074B (en) * | 2016-08-24 | 2024-05-14 | 广州市晨威电子科技有限公司 | Constant voltage and constant current control device based on current drive circuit |
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Granted publication date: 20151202 Termination date: 20190707 |