CN103580082A - Charging device - Google Patents
Charging device Download PDFInfo
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- CN103580082A CN103580082A CN201210277187.0A CN201210277187A CN103580082A CN 103580082 A CN103580082 A CN 103580082A CN 201210277187 A CN201210277187 A CN 201210277187A CN 103580082 A CN103580082 A CN 103580082A
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Abstract
The invention discloses a charging device. The charging device comprises a control circuit, a voltage-stabilizing circuit, a voltage sampling circuit, a current sampling circuit, a DC/DC conversion circuit and a display circuit, wherein the voltage-stabilizing circuit, the voltage sampling circuit, the current sampling circuit, the DC/DC conversion circuit and the display circuit are respectively connected with the control circuit. According to the charging device, a single-chip microcomputer serves as the control circuit, constant current and constant voltage control can be carried out over the whole charging process according to a typical lithium battery quick charging curve, and quick charging is achieved. By being combined with a temperature protective circuit and a timing setting circuit, the charging device not only has multiplex safety protection functions such as the low-voltage overcurrent short circuit and time-limited charging, but also can identity scrapped lithium batteries and fully charged batteries, can achieve automatic switchover between quick charging and trickle charging, and can also charge rechargeable lithium batteries of other types or capacities by modifying or updating software. The charging device is simple, intelligent, multifunctional, convenient to use, low in cost and easy to update.
Description
Technical field
The present invention relates to charging technique field, relate in particular to a kind of charging device.
Background technology
At present, a lot of electronic products or power consumption equipment are all usingd chargeable lithium cell as main energy source, and therefore, for meeting the use needs of electronic product or power consumption equipment, the charging that lithium battery is carried out fast and safely just seems particularly important.
Charging device of the prior art is many can only charge for the lithium battery of a kind of model or capacity, and function singleness, is not easy to upgrading.
Summary of the invention
The embodiment of the present invention provides a kind of charging device, can carry out charging safely and fast to the lithium battery of Multiple Type or capacity.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of charging device, described charging device comprises control circuit and the DC/DC translation circuit, voltage sampling circuit, current sampling circuit, voltage stabilizing circuit, the display circuit that are connected with described control circuit respectively, wherein:
Described voltage sampling circuit, described current sampling circuit are connected with described DC/DC translation circuit respectively;
Described control circuit is connected with power input by described voltage stabilizing circuit;
Described DC/DC translation circuit is connected with described power input.
Further, described charging device also comprises temperature protection circuit, and described temperature protection circuit is connected with described control circuit.
Further, described charging device also comprises circuits, and described time set circuit is connected with described control circuit.
Further, described control circuit comprises one 8 single-chip microcomputers.
Further, the first pin of described 8 single-chip microcomputers is connected with power input by described voltage stabilizing circuit;
Crus secunda to the seven pin of described 8 single-chip microcomputers are I/O mouth, and described DC/DC translation circuit, described voltage sampling circuit, described current sampling circuit, described display circuit, described temperature protection circuit and described time set circuit are connected with arbitrary I/O mouth of described 8 single-chip microcomputers respectively;
The octal ground connection of described 8 single-chip microcomputers.
Further, described DC/DC translation circuit comprises a BUCK topological circuit, and described BUCK topological circuit comprises: metal-oxide-semiconductor Q1, and triode Q3, Q4 and Q5, diode D1 and D2, inductance L 1, electrochemical capacitor C3, resistance R 1, R2, R3, R5 and R7, wherein:
The source electrode of described metal-oxide-semiconductor Q1 is connected with described power input, and drain electrode is connected with the negative electrode of described diode D1 with one end of described inductance L 1 respectively, and grid is connected with the emitter of described triode Q3 and Q4 respectively;
Described triode Q3 is NPN type, the collector electrode of described triode Q3 is connected with described power input, the base stage of described triode Q3 is connected with described power input by described resistance R 2, and be connected with the collector electrode of described triode Q5 with the base stage of described triode Q4 respectively, the emitter of described triode Q3 is connected with described power input by described resistance R 1, and is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q4 respectively;
Described triode Q4 is positive-negative-positive, the grounded collector of described triode Q4, the base stage of described triode Q4 is connected with the collector electrode of described triode Q5 with the base stage of described triode Q3 respectively, and the emitter of described triode Q4 is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q3 respectively;
Described triode Q5 is NPN type, the collector electrode of described triode Q5 is connected with the base stage of described triode Q3 and Q4 respectively, the base stage of described triode Q5 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers by described resistance R 5, and by described resistance R 7 ground connection, the grounded emitter of described triode Q5;
Described diode D1 is fly-wheel diode, and the negative electrode of described diode D1 is connected with one end of described inductance L 1 with the drain electrode of described metal-oxide-semiconductor Q1 respectively, the plus earth of described diode D1;
Described diode D2 is isolating diode, and the negative electrode of described diode D2 is connected with described voltage sampling circuit, and the anode of described diode D2 is connected with one end of described inductance L 1;
One end of described inductance L 1 is connected with the negative electrode of described diode D1 with the drain electrode of described metal-oxide-semiconductor respectively, and the other end of described inductance L 1 is by described resistance R 3 ground connection, and is connected with the anode of described diode D2 with described electrochemical capacitor C3 respectively;
The anode of described electrochemical capacitor C3 is connected with one end of described inductance L 1, the minus earth of described electrochemical capacitor C3.
Further, described voltage stabilizing circuit comprises voltage reference chip U2, triode Q2, capacitor C 4, electrochemical capacitor C5, and resistance R 4, R6, R8 and R9, the first built-in power, wherein:
The crus secunda of described voltage reference chip U2 is connected with described power input by described resistance R 4, and be connected with the base stage of described triode Q2, the first pin of described voltage reference chip U2 is connected with the emitter of implementing triode Q2 by described resistance R 6, the tripod ground connection of described voltage reference chip U2;
The collector electrode of described triode Q2 is connected with described power input, the base stage of described triode Q2 is connected with the crus secunda of described voltage reference chip U2, the emitter of described triode Q2 is by described resistance R 6 and R9 ground connection, and is connected with one end of described capacitor C 4;
One end of described capacitor C 4 is all connected with the emitter of described triode Q2, the anode of described electrochemical capacitor C5, the other end ground connection of described capacitor C 4;
The anode of described electrochemical capacitor C5 is all connected with described capacitor C 4, described the first built-in power, and is connected with described 8 single-chip microcomputer the first pin, the minus earth of described electrochemical capacitor C5;
After described resistance R 8 and R9 parallel connection, connect with described resistance R 6.
Further, described voltage sampling circuit comprises capacitor C 6 and C7, resistance R 10 and R11, wherein:
One end of described capacitor C 6 is connected with one end of described capacitor C 7, and the other end of described capacitor C 6 is connected with described DC/DC translation circuit, and described resistance R 10 is in parallel with described capacitor C 6;
One end of described capacitor C 7 is connected with one end of described capacitor C 6, and is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and described resistance R 11 is in parallel with described capacitor C 7.
Further, described current sampling circuit comprises capacitor C 8, resistance R 13, R15 and R16, wherein:
Described capacitor C 8 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and by described resistance R 13 and R16 ground connection, the other end ground connection of described capacitor C 8, described resistance R 15 is in parallel with described capacitor C 8.
Further, described display circuit comprises electrodeless dual color light emitting LED1, resistance R 17, R21 and the second built-in power, wherein:
One end of described electrodeless dual color light emitting LED1 connects described the second built-in power by described resistance R 17, and by described resistance R 21 ground connection, the other end of described electrodeless dual color light emitting LED1 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers.
Further, described temperature protection circuit comprises thermistor R18, triode Q6, resistance R 12, R14 and R19, the 3rd built-in power, wherein:
The base stage of described triode Q6 is all connected with resistance R 14, R19 with described thermistor R18, the collector electrode of described triode Q6 is connected with described the 3rd built-in power by described resistance R 12, and be connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, the grounded emitter of described triode Q6;
Described thermistor R18 and the equal ground connection of resistance R 19.
Further, described time set circuit comprises resistance R 20 and R22, the 4th built-in power, wherein:
Described resistance R 20 is connected with described the 4th built-in power, and by described resistance R 22 ground connection;
Described resistance R 20 is all connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers with R22.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is carried out constant current constant voltage control according to typical lithium battery quick charge curve to whole charging process by control circuit, can realize quick charge and trickle charge and automatically switch, and also can charge to the chargeable lithium cell of other types or capacity by modification or upgrade software.Simple intelligence, diverse in function, easy to use, with low cost and be easy to upgrade.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the charging device that Fig. 1 provides for the embodiment of the present invention;
The circuit diagram of the charging device that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the structural representation of the charging device providing for the embodiment of the present invention.Described charging device comprises: control circuit 01, DC/DC translation circuit 02, voltage sampling circuit 03, current sampling circuit 04, voltage stabilizing circuit 05 and display circuit 06.
Concrete, control circuit 01 comprises one 8 single-chip microcomputers, is connected respectively with DC/DC translation circuit 02, voltage sampling circuit 03, current sampling circuit 04, voltage stabilizing circuit 05 and display circuit 06.Control circuit 01 is connected with power input by voltage stabilizing circuit 05.DC/DC translation circuit 02 is connected with power input.
Voltage stabilizing is realized through voltage stabilizing circuit 05 in low voltage direct current one tunnel, for control circuit 01 and peripheral circuit thereof; Step-down is realized through DC/DC translation circuit 02 in one tunnel, charges the battery.
Whether control circuit 02 is controlled the show state of display circuit 06 according to the charge condition of battery, with reminding user battery, be full of, and same, specific works principle will describe in detail hereinafter.
Further, please continue referring to Fig. 1, described charging device also comprises: temperature protection circuit 07 and time set circuit 08.
Concrete, temperature protection circuit 07, time set circuit 08 are all connected with control circuit 01.
Refer to Fig. 2, the circuit diagram of the illumination alert device providing for the embodiment of the present invention.
Further, control circuit 01 comprises one 8 single-chip microcomputers.
Further, the pin 1 of these 8 single-chip microcomputers is connected with power input S1 by described voltage stabilizing circuit;
The pin 2 of these 8 single-chip microcomputers is I/O mouth to pin 7, and DC/DC translation circuit 02, voltage sampling circuit 03, current sampling circuit 04, display circuit 06, temperature protection circuit 07 and time set circuit 08 are connected with arbitrary I/O mouth of 8 single-chip microcomputers respectively;
Further, DC/DC translation circuit 02 comprises a BUCK topological circuit, and this BUCK topological circuit comprises: metal-oxide-semiconductor Q1, and triode Q3, Q4 and Q5, diode D1 and D2, inductance L 1, electrochemical capacitor C3, resistance R 1, R2, R3, R5 and R7, wherein:
The source electrode of described metal-oxide-semiconductor Q1 is connected with described power input S1, and drain electrode is connected with the negative electrode of described diode D1 with one end of described inductance L 1 respectively, and grid is connected with the emitter of described triode Q3 and Q4 respectively;
Described triode Q3 is NPN type, the collector electrode of described triode Q3 is connected with described power input S1, the base stage of described triode Q3 is connected with described power input S1 by described resistance R 2, and be connected with the collector electrode of described triode Q5 with the base stage of described triode Q4 respectively, the emitter of described triode Q3 is connected with described power input S1 by described resistance R 1, and is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q4 respectively;
Described triode Q4 is positive-negative-positive, the grounded collector of described triode Q4, the base stage of described triode Q4 is connected with the collector electrode of described triode Q5 with the base stage of described triode Q3 respectively, and the emitter of described triode Q4 is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q3 respectively;
Described triode Q5 is NPN type, the collector electrode of described triode Q5 is connected with the base stage of described triode Q3 and Q4 respectively, the base stage of described triode Q5 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers by described resistance R 5, and by described resistance R 7 ground connection, the grounded emitter of described triode Q5;
Described diode D1 is fly-wheel diode, and the negative electrode of described diode D1 is connected with one end of described inductance L 1 with the drain electrode of described metal-oxide-semiconductor Q1 respectively, the plus earth of described diode D1;
Described diode D2 is isolating diode, and the negative electrode of described diode D2 is connected with described voltage sampling circuit 03, and the anode of described diode D2 is connected with one end of described inductance L 1;
One end of described inductance L 1 is connected with the negative electrode of described diode D1 with the drain electrode of described metal-oxide-semiconductor respectively, and the other end of described inductance L 1 is by described resistance R 3 ground connection, and is connected with the anode of described diode D2 with described electrochemical capacitor C3 respectively;
The anode of described electrochemical capacitor C3 is connected with one end of described inductance L 1, the minus earth of described electrochemical capacitor C3.
Further, voltage stabilizing circuit 05 comprises voltage reference chip U2, triode Q2, capacitor C 4, electrochemical capacitor C5, and resistance R 4, R6, R8 and R9, the first built-in power, wherein:
The pin 2 of described voltage reference chip U2 is connected with described power input S1 by described resistance R 4, and be connected with the base stage of described triode Q2, the pin 1 of described voltage reference chip U2 is connected with the emitter of implementing triode Q2 by described resistance R 6, pin 3 ground connection of described voltage reference chip U2;
The collector electrode of described triode Q2 is connected with described power input S1, the base stage of described triode Q2 is connected with the pin 2 of described voltage reference chip U2, the emitter of described triode Q2 is by described resistance R 6 and R9 ground connection, and is connected with one end of described capacitor C 4;
One end of described capacitor C 4 is all connected with the emitter of described triode Q2, the anode of described electrochemical capacitor C5, the other end ground connection of described capacitor C 4;
The anode of described electrochemical capacitor C5 is all connected with described capacitor C 4, described the first built-in power, and is connected with described 8 monolithic under-chassis 1, the minus earth of described electrochemical capacitor C5;
After described resistance R 8 and R9 parallel connection, connect with described resistance R 6.
Further, voltage sampling circuit 03 comprises capacitor C 6 and C7, resistance R 10 and R11, wherein:
One end of described capacitor C 6 is connected with one end of described capacitor C 7, the other end of described capacitor C 6 is connected with described DC/DC translation circuit 02, and while implanting rechargeable battery BT1 in charging device, be connected with the positive pole of rechargeable battery BT1, described resistance R 10 is in parallel with described capacitor C 6;
One end of described capacitor C 7 is connected with one end of described capacitor C 6, and is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and described resistance R 11 is in parallel with described capacitor C 7.
Further, current sampling circuit 04 comprises capacitor C 8, resistance R 13, R15 and R16, wherein:
Described capacitor C 8 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and by described resistance R 13 and R16 ground connection, the other end ground connection of described capacitor C 8, described resistance R 15 is in parallel with described capacitor C 8.
While implanting rechargeable battery BT1 in charging device, the negative pole of rechargeable battery BT1 is by described resistance R 16 ground connection.
Further, display circuit 06 comprises electrodeless dual color light emitting LED1, resistance R 17, R21 and the second built-in power, wherein:
One end of described electrodeless dual color light emitting LED1 connects described the second built-in power by described resistance R 17, and by described resistance R 21 ground connection, the other end of described electrodeless dual color light emitting LED1 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers.
Further, temperature protection circuit 07 comprises thermistor R18, triode Q6, resistance R 12, R14 and R19, the 3rd built-in power, wherein:
The base stage of described triode Q6 is all connected with resistance R 14, R19 with described thermistor R18, the collector electrode of described triode Q6 is connected with described the 3rd built-in power by described resistance R 12, and be connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, the grounded emitter of described triode Q6;
Described thermistor R18 and the equal ground connection of resistance R 19.
Further, time set circuit 08 comprises resistance R 20 and R22, the 4th built-in power, wherein:
Described resistance R 20 is connected with described the 4th built-in power, and by described resistance R 22 ground connection;
Described resistance R 20 is all connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers with R22.
Concrete, 8 single-chip microcomputers that control circuit 01 comprises have eight pins, and except pin 1 meets power input S1, outside pin 8 ground connection, other six pin is I/O mouth (in/out mouth), can be connected with any circuit.
In the present embodiment, eight of 8 single-chip microcomputers pins and DC/DC translation circuit 02 in control circuit 01, voltage sampling circuit 03, current sampling circuit 04, voltage stabilizing circuit 05, display circuit 06, the annexation of temperature protection circuit 07 and time set circuit 08 is as shown in Figure 2: pin 1 is connected power input S1 by voltage stabilizing circuit 05, pin 2 connects display circuit 06, pin 3 connects time set circuit 08, pin 4 connects temperature protection circuit 07, pin 5 connects voltage sampling circuit 03 and current sampling circuit 04 by DC/DC translation circuit 02, pin 6 connects current sampling circuit 04, pin 7 connects voltage sampling circuit 03, pin 8 ground connection.
Certainly, in other possible embodiment of the present invention, control circuit 01 meets power input S1 except pin 1, outside pin 8 ground connection, from the annexation of other each circuit also can be different, be not repeated herein.
In addition, this charging device is also provided with the electrochemical capacitor C1 with filter action and is connected with power input S1 with capacitor C 2, and wherein, the anode of electrochemical capacitor C1 is connected with power input S1, the minus earth of electrochemical capacitor C1; One end of capacitor C 2 is connected with power input S1, the other end ground connection of capacitor C 2.
Time set circuit 08 is a resistor voltage divider circuit in fact, and according to the model of different rechargeable batteries or capacity, single-chip microcomputer arranges the different charge timing time by setting the magnitude of voltage of time set circuit 08.For example, the voltage that monolithic under-chassis 3 samples time set circuit 08 is 0, and the charge timing time is 5 hours; It is more than 4V that single-chip microcomputer the 3rd pin samples time set circuit 08 voltage, and the charge timing time is 10 hours.Time set circuit 08 can play a protective role when rechargeable battery breaks down, and avoids rechargeable battery cannot be full of the problem that the charging interval is long, charging device is overheated of can not auto-breaking and causing, and has effectively avoided potential safety hazard.
DC/DC translation circuit 02 is a BUCK topological circuit, realize voltage transitions, the pin 5 of single-chip microcomputer passes through after voltage sampling circuit 03 and current sampling circuit 04, according to the real-time change of charged battery voltage and electric current, export corresponding pulse-width modulation (Pulse Width Modulation, PWM) ripple, controls DC/DC translation circuit and exports corresponding voltage, to realize rechargeable battery charging safely and fast.
After single-chip microcomputer powers on, internal initialization first, then sampling timing arranges the voltage of circuit 08, preserves timing.Then, single-chip microcomputer starts the voltage of rechargeable battery to sample.After implanting rechargeable battery, charging device detects cell voltage, if cell voltage is 0-2.9V ± 0.05V, with 200mA ± 20mA constant current charge, enters preliminary filling, and during preliminary filling, LED1 shows red; If more than in 38 minutes, cell voltage reaches 2.9V ± 0.05V, charging enters the process of filling soon.The process of filling is soon carried out constant current charge with the electric current of 1000mA ± 100mA; When charged battery voltage reaches after final voltage 4.2V ± 0.05V, constant current charge stops, the fast quick depletion of charging current, and charging enters the process of completely filling.The process of completely filling is carried out constant voltage charge with the voltage of 4.2V ± 0.05V.Completely fill in process, when charging current is reduced to after 100mA ± 15mA, charging completes, and stops charging, and LED1 shows green.In said process, the value of constant voltage voltage and continuous current arranges mainly and carries out according to typical lithium battery quick charge curve.Battery be full of or one take turns and charged after, if rechargeable battery is not extracted, charging device is still by the voltage of voltage sampling circuit 03 monitoring battery, when cell voltage during lower than 3.9V ± 0.05V (because lithium battery can self discharge), continues as battery charging.
The embodiment of the present invention, by using single-chip microcomputer as control circuit, can be carried out constant current constant voltage control to whole charging process according to typical lithium battery quick charge curve, realizes quick charge.And in conjunction with temperature protection circuit, time set circuit; not only possess low-voltage and cross the maltilevel security defencive functions such as flow short-circuit and charging in limited time; can also identify the lithium battery of scrapping and be full of battery; can realize quick charge and trickle charge and automatically switch, and also can charge to the chargeable lithium cell of other types or capacity by modification or upgrade software.Simple intelligence, diverse in function, easy to use, with low cost and be easy to upgrade.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential hardware platform by software and realize, and can certainly all by hardware, implement.Understanding based on such, what technical scheme of the present invention contributed to background technology can embody with the form of software product in whole or in part, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the present invention or embodiment.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (12)
1. a charging device, is characterized in that, comprises control circuit and the DC/DC translation circuit, voltage sampling circuit, current sampling circuit, voltage stabilizing circuit, the display circuit that are connected with described control circuit respectively, wherein:
Described voltage sampling circuit, described current sampling circuit are connected with described DC/DC translation circuit respectively;
Described control circuit is connected with power input by described voltage stabilizing circuit;
Described DC/DC translation circuit is connected with described power input.
2. device as claimed in claim 1, is characterized in that, also comprises:
Temperature protection circuit, described temperature protection circuit is connected with described control circuit.
3. device as claimed in claim 2, is characterized in that, also comprises:
Time set circuit, described time set circuit is connected with described control circuit.
4. device as claimed in claim 3, is characterized in that, described control circuit comprises one 8 single-chip microcomputers.
5. device as claimed in claim 4, is characterized in that:
The first pin of described 8 single-chip microcomputers is connected with power input by described voltage stabilizing circuit;
Crus secunda to the seven pin of described 8 single-chip microcomputers are I/O mouth, and described display circuit, described time set circuit, described temperature protection circuit, described current sampling circuit, described voltage sampling circuit and described DC/DC translation circuit are connected with arbitrary I/O mouth of described 8 single-chip microcomputers respectively;
The octal ground connection of described 8 single-chip microcomputers.
6. device as claimed in claim 5, is characterized in that, described DC/DC translation circuit comprises a BUCK topological circuit, and described BUCK topological circuit comprises: metal-oxide-semiconductor Q1, triode Q3, Q4 and Q5, diode D1 and D2, inductance L 1, electrochemical capacitor C3, resistance R 1, R2, R3, R5 and R7, wherein:
The source electrode of described metal-oxide-semiconductor Q1 is connected with described power input, and drain electrode is connected with the negative electrode of described diode D1 with one end of described inductance L 1 respectively, and grid is connected with the emitter of described triode Q3 and Q4 respectively;
Described triode Q3 is NPN type, the collector electrode of described triode Q3 is connected with described power input, the base stage of described triode Q3 is connected with described power input by described resistance R 2, and be connected with the collector electrode of described triode Q5 with the base stage of described triode Q4 respectively, the emitter of described triode Q3 is connected with described power input by described resistance R 1, and is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q4 respectively;
Described triode Q4 is positive-negative-positive, the grounded collector of described triode Q4, the base stage of described triode Q4 is connected with the collector electrode of described triode Q5 with the base stage of described triode Q3 respectively, and the emitter of described triode Q4 is connected with the grid of described metal-oxide-semiconductor Q1 with the emitter of described triode Q3 respectively;
Described triode Q5 is NPN type, the collector electrode of described triode Q5 is connected with the base stage of described triode Q3 and Q4 respectively, the base stage of described triode Q5 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers by described resistance R 5, and by described resistance R 7 ground connection, the grounded emitter of described triode Q5;
Described diode D1 is fly-wheel diode, and the negative electrode of described diode D1 is connected with one end of described inductance L 1 with the drain electrode of described metal-oxide-semiconductor Q1 respectively, the plus earth of described diode D1;
Described diode D2 is isolating diode, and the negative electrode of described diode D2 is connected with described voltage sampling circuit, and the anode of described diode D2 is connected with one end of described inductance L 1;
One end of described inductance L 1 is connected with the negative electrode of described diode D1 with the drain electrode of described metal-oxide-semiconductor respectively, and the other end of described inductance L 1 is by described resistance R 3 ground connection, and is connected with the anode of described diode D2 with described electrochemical capacitor C3 respectively;
The anode of described electrochemical capacitor C3 is connected with one end of described inductance L 1, the minus earth of described electrochemical capacitor C3.
7. device as claimed in claim 5, is characterized in that, described voltage stabilizing circuit comprises voltage reference chip U2, triode Q2, capacitor C 4, electrochemical capacitor C5, and resistance R 4, R6, R8 and R9, the first built-in power, wherein:
The crus secunda of described voltage reference chip U2 is connected with described power input by described resistance R 4, and be connected with the base stage of described triode Q2, the first pin of described voltage reference chip U2 is connected with the emitter of implementing triode Q2 by described resistance R 6, the crus secunda ground connection of described voltage reference chip U2;
The collector electrode of described triode Q2 is connected with described power input, the base stage of described triode Q2 is connected with the crus secunda of described voltage reference chip U2, the emitter of described triode Q2 is by described resistance R 6 and R9 ground connection, and is connected with one end of described capacitor C 4;
One end of described capacitor C 4 is all connected with the emitter of described triode Q2, the anode of described electrochemical capacitor C5, the other end ground connection of described capacitor C 4;
The anode of described electrochemical capacitor C5 is all connected with described capacitor C 4, described the first built-in power, and is connected with described 8 single-chip microcomputer crus secundas, the minus earth of described electrochemical capacitor C5;
After described resistance R 8 and R9 parallel connection, connect with described resistance R 6.
8. device as claimed in claim 5, is characterized in that, described voltage sampling circuit comprises capacitor C 6 and C7, resistance R 10 and R11, wherein:
One end of described capacitor C 6 is connected with one end of described capacitor C 7, and the other end of described capacitor C 6 is connected with described DC/DC translation circuit, and described resistance R 10 is in parallel with described capacitor C 6;
One end of described capacitor C 7 is connected with one end of described capacitor C 6, and is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and described resistance R 11 is in parallel with described capacitor C 7.
9. device as claimed in claim 5, is characterized in that, described current sampling circuit comprises capacitor C 8, resistance R 13, R15 and R16, wherein:
Described capacitor C 8 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, and by described resistance R 13 and R16 ground connection, the other end ground connection of described capacitor C 8, described resistance R 15 is in parallel with described capacitor C 8.
10. device as claimed in claim 5, is characterized in that, described display circuit comprises electrodeless dual color light emitting LED1, resistance R 17, R21 and the second built-in power, wherein:
One end of described electrodeless dual color light emitting LED1 connects described the second built-in power by described resistance R 17, and by described resistance R 21 ground connection, the other end of described electrodeless dual color light emitting LED1 is connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers.
11. devices as claimed in claim 5, is characterized in that, described temperature protection circuit comprises thermistor R18, triode Q6, resistance R 12, R14 and R19, the 3rd built-in power, wherein:
The base stage of described triode Q6 is all connected with resistance R 14, R19 with described thermistor R18, the collector electrode of described triode Q6 is connected with described the 3rd built-in power by described resistance R 12, and be connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers, the grounded emitter of described triode Q6;
Described thermistor R18 and the equal ground connection of resistance R 19.
12. devices as claimed in claim 5, is characterized in that, described time set circuit comprises resistance R 20 and R22, the 4th built-in power, wherein:
Described resistance R 20 is connected with described the 4th built-in power, and by described resistance R 22 ground connection;
Described resistance R 20 is all connected with the arbitrary idle I/O mouth of described 8 single-chip microcomputers with R22.
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| CN107171410A (en) * | 2017-07-18 | 2017-09-15 | 姬丰产 | A kind of charger temperature control protective device and charger |
| TWI692169B (en) * | 2018-08-17 | 2020-04-21 | 群光電能科技股份有限公司 | Charging apparatus and method of operating the same |
| CN111404238A (en) * | 2020-04-28 | 2020-07-10 | 上海电力大学 | Lithium battery pack charging device |
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| CN105743171A (en) * | 2016-03-29 | 2016-07-06 | 深圳市安全快充技术有限公司 | Intelligent rapid charging apparatus |
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| CN111404238A (en) * | 2020-04-28 | 2020-07-10 | 上海电力大学 | Lithium battery pack charging device |
| CN112234666A (en) * | 2020-09-04 | 2021-01-15 | 宁波唯嘉电子科技有限公司 | Lithium battery charging and discharging circuit of tool lamp |
| CN112234666B (en) * | 2020-09-04 | 2022-06-17 | 宁波唯嘉电子科技有限公司 | Lithium battery charging and discharging circuit of tool lamp |
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