CN206211630U - A kind of many charging modes band defencive function lithium battery charging circuits - Google Patents
A kind of many charging modes band defencive function lithium battery charging circuits Download PDFInfo
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- CN206211630U CN206211630U CN201621093509.6U CN201621093509U CN206211630U CN 206211630 U CN206211630 U CN 206211630U CN 201621093509 U CN201621093509 U CN 201621093509U CN 206211630 U CN206211630 U CN 206211630U
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- lithium battery
- triode
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- positive pole
- resistor
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 50
- 230000001012 protector Effects 0.000 claims abstract description 12
- 230000007812 deficiency Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of many charging modes band defencive function lithium battery charging circuits; DC interfaces, external solar charging electrical interface and the built-in switched power being connected with lithium battery anode including lithium battery; also including being connected with lithium battery full of indicating circuit and charge protector, charge protector includes first resistor, voltage-regulator diode, second resistance, the first triode and 3rd resistor.Circuit structure of the present utility model is reasonable; with charge protector and full of indicating circuit; not only can effectively indicate lithium cell charging situation; can also be effectively protected lithium battery simultaneously; it is not easy lithium battery is damaged caused by after charging voltage is too high; solve in conventional art and the technical deficiency damaged easily is caused to lithium battery, stability in use is good and strong applicability.
Description
Technical field
The utility model belongs to charging circuit skill field, is to be related to a kind of many charging modes band protection work(more specifically
Can lithium battery charging circuit.
Background technology
Portable illumination equipment is widely used in the middle of people's daily life, and portioned product uses lithium battery, such product
Product volume is less and general discharge time is also more long, with certain advantage；And charging in many ways is also equipped with, is opened Ru built-in
Powered-down source, external DC is inserted and external solar recharging etc..Due to being equipped with charging inlet outward, if user uses unmatched charging
Device, may cause to damage the danger that can even explode, even if lithium battery is per se with protection board, but protection to lithium battery
Component pressure voltage above plate is typically relatively low, and damage is also easily caused after charging voltage is too high；How this is prevented
The occurrence of, increasing appropriate defencive function to circuit, this just proposes a great challenge to design.
Utility model content
The utility model is to provide that a kind of stability in use is good and many charging modes band defencive function lithium electricity of strong applicability
Pond charging circuit, it is intended to solve the easy technical deficiency for causing to damage to lithium battery in conventional art.
Its utility model provides a kind of many charging modes band defencive function lithium battery charging circuits, including lithium battery and
DC interfaces, external solar charging electrical interface and built-in switched power that the lithium battery anode is connected, also including with it is described
Lithium battery be connected full of indicating circuit and charge protector, the charge protector includes first resistor, voltage stabilizing two
Pole pipe, second resistance, the first triode and 3rd resistor, the grounded emitter line of first triode, the one or three pole
The colelctor electrode of pipe is connected to the positive pole of lithium battery by first resistor, and the base stage of first triode is connect by second resistance
Ground, and the base stage of the first triode is connected with the positive pole of voltage-regulator diode, voltage-regulator diode and negative pole are connected by 3rd resistor
It is connected on first resistor and lithium battery anode tie point.
It is described full of indicating circuit include the first unilateral diode, the second unilateral diode, the 4th resistance, the 5th resistance,
Second triode, the 6th resistance, the 7th resistance and bi-colour LED, first unilateral diode, the second unilateral diode and
The positive pole of the 4th resistor coupled in parallel and the first unilateral diode and the second unilateral diode is connected to DC interfaces, external solar charging
On the positive pole of electrical interface and built-in switched power, the lithium battery that is connected with the negative pole of the second unilateral diode of the first unilateral diode
Positive pole on, the first resistor is connected on the positive pole of the first unilateral diode, and the base stage of second triode is by the
Five resistance are connected on the negative pole of the first unilateral diode, and the emitter stage of second triode is connected to the first unilateral diode
Positive pole on, the colelctor electrode of second triode is connected by the 6th resistance with the positive pole of bi-colour LED, the described 7th
Resistance is connected between the emitter stage of the second triode and the positive pole of bi-colour LED, the negative pole ground connection of the bi-colour LED.
First triode is NPN type triode, second triode is PNP type triode.
The master chip model LP3775 of the built-in switched power.
The beneficial effects of the utility model are：Circuit structure of the present utility model rationally, with charge protector and
Full of indicating circuit, lithium cell charging situation not only can be effectively indicated, while can also be effectively protected lithium battery, it is not easy to make
Lithium battery is damaged caused by after charging voltage is too high, is solved in conventional art and is easily caused the technology damaged not to lithium battery
Foot, stability in use is good and strong applicability.
Brief description of the drawings
The electrical block diagram that Fig. 1 is provided for the utility model embodiment.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to the utility model.It should be appreciated that specific reality described herein
Apply example to be only used to explain the utility model, be not used to limit the utility model.
Please also refer to Fig. 1, for a kind of many charging modes band defencive function lithium that the utility model preferred embodiment is provided
Battery charger, including the DC interfaces 2 that are connected with the positive pole of the lithium battery 1 of lithium battery 1, external solar recharging connect
Mouth 3 and built-in switched power 4, also including being connected with the lithium battery 1 full of indicating circuit 5 and charge protector 6, institute
Stating charge protector 6 includes first resistor R1, voltage-regulator diode VD, second resistance R2, the first triode Q1 and 3rd resistor
R3, the grounded emitter line of the first triode Q1, the colelctor electrode of the first triode Q1 is connected by first resistor R1
In the positive pole of lithium battery 1, the base stage of the first triode Q1 is grounded by second resistance R2, and the first triode Q1 base stage
Be connected with the positive pole of voltage-regulator diode VD, voltage-regulator diode VD and negative pole by 3rd resistor R3 be connected to first resistor R1 with
On the positive pole tie point of lithium battery 1.
It is described to include the first unilateral diode D1, the second unilateral diode D2, the 4th resistance R4, the full of indicating circuit 5
Five resistance R5, the second triode Q2, the 6th resistance R6, the 7th resistance R7 and bi-colour LED LED, first unilateral diode
The positive pole of D1, the second unilateral diode D2 and the 4th resistance R4 parallel connections and the first unilateral diode D1 and the second unilateral diode D2
Be connected on the positive pole of DC interfaces 2, external solar charging electrical interface 3 and built-in switched power 4, the first unilateral diode and
On the positive pole of the lithium battery of the negative pole connection of two unilateral diodes, the first resistor R1 is connected to the first unilateral diode D1's
On positive pole, the base stage of the second triode Q2 is connected on the negative pole of the first unilateral diode D1 by the 5th resistance R5, institute
The emitter stage for stating the second triode Q2 is connected on the positive pole of the first unilateral diode D1, the colelctor electrode of the second triode Q2
It is connected with the positive pole of bi-colour LED LED by the 6th resistance R6, the 7th resistance R7 is connected to the second triode Q2's
Between the positive pole of emitter stage and bi-colour LED LED, the negative pole ground connection of the bi-colour LED LED.
First triode is NPN type triode, second triode is PNP type triode.
The master chip model LP3775 of the built-in switched power.
Its operation principle is summarized as follows：As shown in schematic diagram, circuit has 3 charging access interface, is respectively that AC220V connects
Built-in switched power, DC12V connects external DC socket, 6V solar charging panels；3 kinds of charging modes output voltages converge at diode
At D4 and D5 anodes；D1, D2, R4, R5, Q2, R6, R7 and bi-colour LED LED compositions are full of indicating circuit, when charging current is few
When setting value, Q2 cut-offs, bi-colour light red light part is extinguished, and whole lamp state is green, indicates battery to have been filled with.Other R1, R2,
VD, Q1, R3 constitute charge protector, and when lithium battery is charged normal, 3 kinds of output voltages of charging modes are all clamped by battery
Position, now voltage is relatively low on R1 and R3, and VD is in cut-off state.After battery is full of, because lithium battery is per se with protection board,
Now charge circuit is truncated, and charging output voltage can be raised immediately, when voltage it is high to setting value when, VD reverse breakdowns, Q1 leads
It is logical, voltage is drawn by resistance R1 by ground, so as to play a protective role.
Circuit structure of the present utility model is reasonable, with charge protector and full of indicating circuit, not only can be effective
Indicate lithium cell charging situation, while can also be effectively protected lithium battery, it is not easy to make lithium battery because charging voltage it is too high after make
Into damage, solve in conventional art and the technical deficiency damaged easily is caused to lithium battery, stability in use is good and strong applicability.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of many charging modes band defencive function lithium battery charging circuits, including lithium battery are connected with the lithium battery anode
DC interfaces, external solar charging electrical interface and the built-in switched power for connecing, it is characterised in that：Also include and the lithium battery phase
Connection full of indicating circuit and charge protector, the charge protector includes first resistor, voltage-regulator diode, second
Resistance, the first triode and 3rd resistor, the grounded emitter line of first triode, the colelctor electrode of first triode
The positive pole of lithium battery is connected to by first resistor, the base stage of first triode is grounded by second resistance, and the one or three
The base stage of pole pipe is connected with the positive pole of voltage-regulator diode, voltage-regulator diode and negative pole are connected to first resistor by 3rd resistor
On lithium battery anode tie point.
2. a kind of many charging modes according to claim 1 are with defencive function lithium battery charging circuits, it is characterised in that：Institute
State full of indicating circuit include the first unilateral diode, the second unilateral diode, the 4th resistance, the 5th resistance, the second triode,
6th resistance, the 7th resistance and bi-colour LED, first unilateral diode, the second unilateral diode and the 4th resistor coupled in parallel
And first unilateral diode and the positive pole of the second unilateral diode be connected to DC interfaces, external solar charging electrical interface and built-in
On the positive pole of Switching Power Supply, on the positive pole of lithium battery that is connected with the negative pole of the second unilateral diode of the first unilateral diode, institute
State first resistor to be connected on the positive pole of the first unilateral diode, the base stage of second triode is connected to by the 5th resistance
On the negative pole of the first unilateral diode, the emitter stage of second triode is connected on the positive pole of the first unilateral diode, institute
The colelctor electrode for stating the second triode is connected by the 6th resistance with the positive pole of bi-colour LED, and the 7th resistance is connected to
Between the emitter stage of two triodes and the positive pole of bi-colour LED, the negative pole ground connection of the bi-colour LED.
3. a kind of many charging modes according to claim 2 are with defencive function lithium battery charging circuits, it is characterised in that：Institute
The first triode is stated for NPN type triode, second triode are PNP type triode.
4. a kind of many charging modes according to claim 3 are with defencive function lithium battery charging circuits, it is characterised in that：Institute
State the master chip model LP3775 of built-in switched power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093509.6U CN206211630U (en) | 2016-09-29 | 2016-09-29 | A kind of many charging modes band defencive function lithium battery charging circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093509.6U CN206211630U (en) | 2016-09-29 | 2016-09-29 | A kind of many charging modes band defencive function lithium battery charging circuits |
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| Publication Number | Publication Date |
|---|---|
| CN206211630U true CN206211630U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621093509.6U Active CN206211630U (en) | 2016-09-29 | 2016-09-29 | A kind of many charging modes band defencive function lithium battery charging circuits |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751383A (en) * | 2020-12-29 | 2021-05-04 | 广东金莱特电器股份有限公司 | Charging circuit and electric fan |
-
2016
- 2016-09-29 CN CN201621093509.6U patent/CN206211630U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751383A (en) * | 2020-12-29 | 2021-05-04 | 广东金莱特电器股份有限公司 | Charging circuit and electric fan |
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