CN208849474U - A kind of charger without polarity - Google Patents
A kind of charger without polarity Download PDFInfo
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- CN208849474U CN208849474U CN201820738680.0U CN201820738680U CN208849474U CN 208849474 U CN208849474 U CN 208849474U CN 201820738680 U CN201820738680 U CN 201820738680U CN 208849474 U CN208849474 U CN 208849474U
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Abstract
The utility model discloses a kind of charger without polarity, including polarity self-test part, control section and live part, polarity self-test part includes field-effect tube Q14, battery BAT1 and resistance R19, control section includes single-chip microcontroller U3, switch S1 and switch S2, live part includes triode Q7, diode D5 and inductance L2, the source electrode of field-effect tube Q14 is separately connected the cathode of diode D4, resistance R21, the source electrode of resistance R18 and field-effect tube Q15, the grid of field-effect tube Q14 connects the grid of field-effect tube Q16 by resistance, the drain electrode of field-effect tube Q15 and the drain electrode of field-effect tube Q17.The beneficial effects of the utility model are: 1, any be put into can charge.2, when battery can be prevented to be reversely connected, do not charge or damage battery and charger.
Description
Technical field
The utility model relates to a kind of charger, specifically a kind of charger without polarity.
Background technique
Charger is to adjust charging technique with advanced Intelligent Dynamic using high frequency electric source technology.Power frequency machine is to pass
For the analog circuit principle of system come what is designed, machine internal power device (such as transformer, inductance, capacitor) is all bigger, and one
As there is smaller noise when band carries larger operation, but type resistance performance in severe power grid environment condition is stronger, can
It is stronger than High-frequency machine by property and stability.
Charger on the market is all that a polarity can charge now, and when reversal connection cannot charge or even can burn out.It is this to set
It is not high to count safety, it is easy to battery and charger be caused to damage.If especially not knowing about personage's reversal connection to battery behavior to fill
First is that cannot smoothly charge the battery when electric, second is that battery or charger damage.
Utility model content
The purpose of this utility model is to provide a kind of charger without polarity, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the utility model provides the following technical solutions:
A kind of charger without polarity, including polarity self-test part, control section and live part, the polarity self-test
Part includes field-effect tube Q14, battery BAT1 and resistance R19, and control section includes single-chip microcontroller U3, switch S1 and switch S2, is filled
Electric part includes triode Q7, diode D5 and inductance L2, the source electrode of field-effect tube Q14 be separately connected diode D4 cathode,
The grid of the source electrode of resistance R21, resistance R18 and field-effect tube Q15, field-effect tube Q14 connects field-effect tube Q16's by resistance
Grid, the drain electrode of field-effect tube Q15 and field-effect tube Q17 drain electrode, the drain electrode of field-effect tube Q14 connects resistance R19, field-effect
The source electrode of pipe Q16 and the cathode of battery BAT1, the grid of field-effect tube Q15 connect grid, the field of field-effect tube Q17 by resistance
The drain electrode of effect pipe Q14 and the drain electrode of field-effect tube Q16, source electrode connection resistance R22, resistance R23 and the field effect of field-effect tube Q17
Should pipe Q17 source electrode, the pin 16 of the other end connection capacitor C12 and single-chip microcontroller U3 of resistance R22, the pin 2 of single-chip microcontroller U3 connects
Switch S1 is met, the pin 6 of the pin 3 connection switch S2, single-chip microcontroller U3 of single-chip microcontroller U3 pass through the base of resistance R5 connecting triode Q9
Pole, base stage, the base stage of resistance R8 and triode Q8 of the collector connecting triode Q7 of triode Q9, the emitter of triode Q7
The source electrode of the emitter of connecting triode Q8 and the grid of field-effect tube Q6, field-effect tube Q6 connects 5V power supply, field-effect tube Q6
Drain electrode connection inductance L2 and diode D5 cathode, inductance L2 the other end connection diode D4 anode and resistance R33.
Further technical solution as the utility model: the model PIC16F1507 of the single-chip microcontroller U3.
Further technical solution as the utility model: the switch S1 and switch S2 is key switch.
Further technical solution as the utility model: the triode Q7 and triode Q9 is p-type triode.
Further technical solution as the utility model: the triode Q8 is N-type triode.
Compared with prior art, the utility model has the beneficial effects that 1, any be put into can charge.2, electricity can be prevented
When pond is reversely connected, battery and charger are not charged or damaged.
Detailed description of the invention
Fig. 1 is Check up polarity partial circuit diagram.
Fig. 2 is control section circuit diagram.
Fig. 3 is live part circuit diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-3, a kind of charger without polarity, including polarity self-test part, control section and live part, institute
Stating polarity self-test part includes field-effect tube Q14, battery BAT1 and resistance R19, and control section includes single-chip microcontroller U3, switch S1
With switch S2, live part includes triode Q7, diode D5 and inductance L2, and the source electrode of field-effect tube Q14 is separately connected two poles
The source electrode of the cathode of pipe D4, resistance R21, resistance R18 and field-effect tube Q15, the grid of field-effect tube Q14 connect field by resistance
The drain electrode of the drain electrode of the grid, field-effect tube Q15 of effect pipe Q16 and the drain electrode of field-effect tube Q17, field-effect tube Q14 connects electricity
Resistance R19, the source electrode of field-effect tube Q16 and the cathode of battery BAT1, the grid of field-effect tube Q15 connect field-effect tube by resistance
The drain electrode of the grid, field-effect tube Q14 of Q17 and the drain electrode of field-effect tube Q16, the source electrode connection resistance R22 of field-effect tube Q17,
The source electrode of resistance R23 and field-effect tube Q17, the pin 16 of the other end connection capacitor C12 and single-chip microcontroller U3 of resistance R22, monolithic
The 3 connection switch S2 of pin of the pin 2 connection switch S1, single-chip microcontroller U3 of machine U3, the pin 6 of single-chip microcontroller U3 are connected by resistance R5
The base stage of triode Q9, base stage, the base stage of resistance R8 and triode Q8 of the collector connecting triode Q7 of triode Q9, three poles
The emitter of the emitter connecting triode Q8 of pipe Q7 and the grid of field-effect tube Q6, the source electrode connection 5V electricity of field-effect tube Q6
Source, the cathode of drain electrode connection the inductance L2 and diode D5 of field-effect tube Q6, the sun of the other end connection diode D4 of inductance L2
Pole and resistance R33.
The model PIC16F1507 of single-chip microcontroller U3.Switch S1 and switch S2 is key switch.Triode Q7 and three poles
Pipe Q9 is p-type triode.Triode Q8 is N-type triode.
The working principle of the utility model is: 1. polarity self-test principles: when anode is connected at BAT2+, battery is negative
Pole is connected at BAT2-, is in this way connected field-effect tube Q16 and field-effect tube Q15, and field-effect tube Q14 and field-effect tube Q17 are cut
Only, then by resistance R23, resistance R18 Check up polarity is completed.Otherwise when anode is connected at BAT2-, battery cathode is connected to
At BAT2+, be in this way connected field-effect tube Q14 and field-effect tube Q17, field-effect tube Q16 and field-effect tube Q15 cut-off, then lead to
Resistance R23 is crossed, resistance R18 completes Check up polarity.
2. control section principle: signal is mainly read by 17 feet of single-chip microcontroller U3 in control section, then removes control PWM2 duty
Than.
3. live part principle: when detecting battery, single-chip microcontroller U3 exports Continuity signal control field-effect tube Q6 switch
Pipe, by inductance L2, the devices such as diode D4 charge the battery.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of charger without polarity, including polarity self-test part, control section and live part, which is characterized in that described
Polarity self-test part includes field-effect tube Q14, battery BAT1 and resistance R19, control section include single-chip microcontroller U3, switch S1 and
Switch S2, live part include triode Q7, diode D5 and inductance L2, and the source electrode of field-effect tube Q14 is separately connected diode
The source electrode of the cathode of D4, resistance R21, resistance R18 and field-effect tube Q15, the grid of field-effect tube Q14 pass through resistance and connect field effect
Should pipe Q16 grid, field-effect tube Q15 drain electrode and field-effect tube Q17 drain electrode, the drain electrode of field-effect tube Q14 connects resistance
The grid of the cathode of R19, the source electrode of field-effect tube Q16 and battery BAT1, field-effect tube Q15 connects field-effect tube by resistance
The drain electrode of the grid, field-effect tube Q14 of Q17 and the drain electrode of field-effect tube Q16, the source electrode connection resistance R22 of field-effect tube Q17,
The source electrode of resistance R23 and field-effect tube Q17, the pin 16 of the other end connection capacitor C12 and single-chip microcontroller U3 of resistance R22, monolithic
The 3 connection switch S2 of pin of the pin 2 connection switch S1, single-chip microcontroller U3 of machine U3, the pin 6 of single-chip microcontroller U3 are connected by resistance R5
The base stage of triode Q9, base stage, the base stage of resistance R8 and triode Q8 of the collector connecting triode Q7 of triode Q9, three poles
The emitter of the emitter connecting triode Q8 of pipe Q7 and the grid of field-effect tube Q6, the source electrode connection 5V electricity of field-effect tube Q6
Source, the cathode of drain electrode connection the inductance L2 and diode D5 of field-effect tube Q6, the sun of the other end connection diode D4 of inductance L2
Pole and resistance R33.
2. a kind of charger without polarity according to claim 1, which is characterized in that the model of the single-chip microcontroller U3
PIC16F1507。
3. a kind of charger without polarity according to claim 1, which is characterized in that the switch S1 and switch S2 be by
Key switch.
4. a kind of charger without polarity according to claim 1, which is characterized in that the triode Q7 and triode Q9 are
P-type triode.
5. a kind of charger without polarity according to claim 1, which is characterized in that the triode Q8 is N-type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738680.0U CN208849474U (en) | 2018-05-18 | 2018-05-18 | A kind of charger without polarity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738680.0U CN208849474U (en) | 2018-05-18 | 2018-05-18 | A kind of charger without polarity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208849474U true CN208849474U (en) | 2019-05-10 |
Family
ID=66351544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820738680.0U Active CN208849474U (en) | 2018-05-18 | 2018-05-18 | A kind of charger without polarity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208849474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867927A (en) * | 2019-12-02 | 2020-03-06 | 董青城 | Two appearance battery boxes |
-
2018
- 2018-05-18 CN CN201820738680.0U patent/CN208849474U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867927A (en) * | 2019-12-02 | 2020-03-06 | 董青城 | Two appearance battery boxes |
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