CN206490462U - A kind of charge protector and charger - Google Patents
A kind of charge protector and charger Download PDFInfo
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- CN206490462U CN206490462U CN201720079117.2U CN201720079117U CN206490462U CN 206490462 U CN206490462 U CN 206490462U CN 201720079117 U CN201720079117 U CN 201720079117U CN 206490462 U CN206490462 U CN 206490462U
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Abstract
The utility model belongs to charging technique field, more particularly to a kind of charge protector and charger.In the utility model embodiment; this charge protector is added on original-pack charger using the circuit of two comparator compositions; become a kind of intelligent charger powered off; just powered off after a while after mobile phone is full of or does not have charging current; charger indicator lamp extinguishes; it so can not only prevent battery from overcharging and charging causes shorter battery life repeatedly, moreover it is possible to which the energy can also be saved by preventing potential safety hazard caused by overcharging, and reduced and wasted.
Description
Technical field
The utility model belongs to charging technique field, more particularly to a kind of charge protector and charger.
Background technology
Popularization and the frequency of use of high intensity with smart mobile phone, mobile phone to evening electricity also almost exhaust, and one
As evening charge the phone, one to fill be exactly a whole night, and charging wire can just be pulled out by waking up within second day, but midnight mobile phone is fully charged
Mobile phone is also ined succession charging wire, and cell phone apparatus is instantly overcharging and charged repeatedly, result in battery contracting
It is short, and the problem of there is potential safety hazard.
Utility model content
The purpose of the utility model embodiment is to provide a kind of charge protector and charger, it is intended to which solution is filled at present
There is service life shortening in battery, and the problem of there is potential safety hazard.
The utility model embodiment is achieved in that a kind of charge protector, and the charge protector includes：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity
C3, electric capacity C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1,
The second termination charging output cathode of the detection resistance R1, the inverting input of the comparator A is connect by the resistance R3
The first end of the detection resistance R1, the in-phase input end of the comparator A meets the detection resistance R1 by the resistance R4
The second end, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to described
Between comparator A inverting input and ground, the output end of the comparator A connects the detection by the resistance R11 all the way
Resistance R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, the sun of the diode D2
Pole connects the inverting input of the comparator B, and the electric capacity C3 is connected between the inverting input of the comparator B and ground,
The resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public company of the resistance R7 and resistance R6
The in-phase input end for terminating the comparator B is connect, the resistance R10 and resistance R9 are connected on negative electrode and the institute of the rectifying tube D1
Between the grid for stating FET Q1, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end,
The source electrode of the FET Q1 connects the charging output cathode by the resistance R13, and the drain electrode of the FET Q1 connects
Ground, the electric capacity C4 is connected between the second end of the detection resistance R1 and ground.
In said structure, the charge protector is also connected to the electricity including indicator lamp LED, the indicator lamp LED
Between the source electrode for hindering the R13 and FET Q1.
In said structure, the charge protector also include a sample circuit, the sample circuit include resistance R12 and
Optocoupler U2, the resistance R12 are connected between the second end of the detection resistance R1 and optocoupler U2.
The another object of the utility model embodiment is to provide a kind of charger, including charge protector, described to fill
Electric protection circuit includes：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity
C3, electric capacity C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1,
The second termination charging output cathode of the detection resistance R1, the inverting input of the comparator A is connect by the resistance R3
The first end of the detection resistance R1, the in-phase input end of the comparator A meets the detection resistance R1 by the resistance R4
The second end, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to described
Between comparator A inverting input and ground, the output end of the comparator A connects the detection by the resistance R11 all the way
Resistance R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, the sun of the diode D2
Pole connects the inverting input of the comparator B, and the electric capacity C3 is connected between the inverting input of the comparator B and ground,
The resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public company of the resistance R7 and resistance R6
The in-phase input end for terminating the comparator B is connect, the resistance R10 and resistance R9 are connected on negative electrode and the institute of the rectifying tube D1
Between the grid for stating FET Q1, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end,
The source electrode of the FET Q1 connects the charging output cathode by the resistance R13, and the drain electrode of the FET Q1 connects
Ground, the electric capacity C4 is connected between the second end of the detection resistance R1 and ground.
In said structure, the charge protector is also connected to the electricity including indicator lamp LED, the indicator lamp LED
Between the source electrode for hindering the R13 and FET Q1.
In said structure, the charge protector also include a sample circuit, the sample circuit include resistance R12 and
Optocoupler U2, the resistance R12 are connected between the second end of the detection resistance R1 and optocoupler U2.
In the utility model embodiment, this charge protector is added in original-pack fill using the circuit of two comparator compositions
On electrical equipment, become a kind of intelligent charger powered off, it is just disconnected after a while after mobile phone is full of or does not have charging current
Electricity, charger indicator lamp extinguishes, and so can not only prevent battery from overcharging and charging causes shorter battery life repeatedly, moreover it is possible to
The energy can also be saved by preventing potential safety hazard caused by overcharging, and reduced and wasted.
Brief description of the drawings
Fig. 1 is the circuit structure diagram for the charge protector that the utility model embodiment is provided.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
Fig. 1 shows the circuit structure structure for the charge protector that the utility model embodiment is provided, for the ease of saying
It is bright, it illustrate only the part related to the utility model embodiment.
A kind of charge protector, it is characterised in that the charge protector includes：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity
C3, electric capacity C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1,
The second termination charging output cathode of the detection resistance R1, the inverting input of the comparator A is connect by the resistance R3
The first end of the detection resistance R1, the in-phase input end of the comparator A meets the detection resistance R1 by the resistance R4
The second end, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to described
Between comparator A inverting input and ground, the output end of the comparator A connects the detection by the resistance R11 all the way
Resistance R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, the sun of the diode D2
Pole connects the inverting input of the comparator B, and the electric capacity C3 is connected between the inverting input of the comparator B and ground,
The resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public company of the resistance R7 and resistance R6
The in-phase input end for terminating the comparator B is connect, the resistance R10 and resistance R9 are connected on negative electrode and the institute of the rectifying tube D1
Between the grid for stating FET Q1, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end,
The source electrode of the FET Q1 connects the charging output cathode by the resistance R13, and the drain electrode of the FET Q1 connects
Ground, the electric capacity C4 is connected between the second end of the detection resistance R1 and ground.
As the embodiment of the utility model one, the charge protector also includes indicator lamp LED, the indicator lamp LED
Between the source electrode for being connected to the resistance R13 and the FET Q1.
As the embodiment of the utility model one, the charge protector also includes a sample circuit, the sample circuit
Including resistance R12 and optocoupler U2, the resistance R12 is connected between the second end of the detection resistance R1 and optocoupler U2.
The utility model embodiment also provides a kind of charger, including charge protector, the charge protector bag
Include：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity
C3, electric capacity C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1,
The second termination charging output cathode of the detection resistance R1, the inverting input of the comparator A is connect by the resistance R3
The first end of the detection resistance R1, the in-phase input end of the comparator A meets the detection resistance R1 by the resistance R4
The second end, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to described
Between comparator A inverting input and ground, the output end of the comparator A connects the detection by the resistance R11 all the way
Resistance R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, the sun of the diode D2
Pole connects the inverting input of the comparator B, and the electric capacity C3 is connected between the inverting input of the comparator B and ground,
The resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public company of the resistance R7 and resistance R6
The in-phase input end for terminating the comparator B is connect, the resistance R10 and resistance R9 are connected on negative electrode and the institute of the rectifying tube D1
Between the grid for stating FET Q1, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end,
The source electrode of the FET Q1 connects the charging output cathode by the resistance R13, and the drain electrode of the FET Q1 connects
Ground, the electric capacity C4 is connected between the second end of the detection resistance R1 and ground.
As the embodiment of the utility model one, the charge protector also includes indicator lamp LED, the indicator lamp LED
Between the source electrode for being connected to the resistance R13 and the FET Q1.
As the embodiment of the utility model one, the charge protector also includes a sample circuit, the sample circuit
Including resistance R12 and optocoupler U2, the resistance R12 is connected between the second end of the detection resistance R1 and optocoupler U2.
D1 is the secondary commutation pipe of charger in itself in figure, and R1 is detection charging current, and R12 is sample circuit, is connect after R1
Face, the sample circuit to original-pack charger is sampled, it is to avoid output voltage is reduced, and is simplified in figure with an optocoupler U2 and represented, actual
Circuit is exactly typically a TL431, is sampled by two precision resistance partial pressures, only the sample resistance being connected at positive pole need to be connected on R1
Below.When have charging current by when, R1 produces pressure drop, and the end of oppisite phase for being sent to comparator A is higher than in-phase end voltage, therefore
It exports low level, and by D2 by comparator B end of oppisite phase voltage pull-down, comparator B output high level control field-effects continue
Conducting；When charging current drops to below 20ma (the charge cutoff electric current of general mobile phone is all zero or several milliampere), compare
Device A anti-phase terminal voltage would fall to below in-phase end, D2 cut-offs, and resistance R8 charges to C3, when comparator B reverse terminal voltage
After in-phase end, FET cut-off, charger stops output.
R8 and C3 determines time delay in figure, if being not connected to mobile phone directly inserts this charger, just the electricity went off after spending 15 seconds,
So typically first connecting mobile phone.
In the utility model embodiment, this charge protector is added in original-pack fill using the circuit of two comparator compositions
On electrical equipment, become a kind of intelligent charger powered off, it is just disconnected after a while after mobile phone is full of or does not have charging current
Electricity, charger indicator lamp extinguishes, and so can not only prevent battery from overcharging and charging causes shorter battery life repeatedly, moreover it is possible to
The energy can also be saved by preventing potential safety hazard caused by overcharging, and reduced and wasted.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of charge protector, it is characterised in that the charge protector includes：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electricity
Hinder R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity
C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1, described
Detection resistance R1 the second termination charging output cathode, the inverting input of the comparator A connects described by the resistance R3
Detection resistance R1 first end, the in-phase input end of the comparator A connects the of the detection resistance R1 by the resistance R4
Two ends, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to the comparison
Between device A inverting input and ground, the output end of the comparator A connects the detection resistance by the resistance R11 all the way
R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, and the anode of the diode D2 connects
The inverting input of the comparator B, the electric capacity C3 is connected between the inverting input of the comparator B and ground, described
Resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public connecting end of the resistance R7 and resistance R6
The in-phase input end of the comparator B is connect, the resistance R10 and resistance R9 are connected on the negative electrode of the rectifying tube D1 and the field
Between effect pipe Q1 grid, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end are described
FET Q1 source electrode connects the charging output cathode, the grounded drain of the FET Q1, institute by the resistance R13
Electric capacity C4 is stated to be connected between the second end of the detection resistance R1 and ground.
2. charge protector as claimed in claim 1, it is characterised in that the charge protector also includes indicator lamp
LED, the indicator lamp LED is connected between the resistance R13 and the FET Q1 source electrode.
3. charge protector as claimed in claim 2, it is characterised in that the charge protector also includes a sampling electricity
Road, the sample circuit includes resistance R12 and optocoupler U2, the resistance R12 be connected to the second end of the detection resistance R1 with
Between optocoupler U2.
4. a kind of charger, it is characterised in that including charge protector, the charge protector includes：
Rectifying tube D1, diode D2, detection resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electricity
Hinder R8, resistance R9, resistance R10, resistance R11, resistance R13, comparator A, comparator B, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity
C4 and FET Q1；
The anode of the rectifying tube D1 connects power supply, and the negative electrode of the rectifying tube D1 connects the first end of the detection resistance R1, described
Detection resistance R1 the second termination charging output cathode, the inverting input of the comparator A connects described by the resistance R3
Detection resistance R1 first end, the in-phase input end of the comparator A connects the of the detection resistance R1 by the resistance R4
Two ends, the resistance R5 is connected between the in-phase input end of the comparator A and ground, and the resistance R2 is connected to the comparison
Between device A inverting input and ground, the output end of the comparator A connects the detection resistance by the resistance R11 all the way
R1 first end, another road of output end of the comparator A connects the negative electrode of the diode D2, and the anode of the diode D2 connects
The inverting input of the comparator B, the electric capacity C3 is connected between the inverting input of the comparator B and ground, described
Resistance R7 and resistance R6 are connected between the negative electrode of the rectifying tube D1 and ground, the public connecting end of the resistance R7 and resistance R6
The in-phase input end of the comparator B is connect, the resistance R10 and resistance R9 are connected on the negative electrode of the rectifying tube D1 and the field
Between effect pipe Q1 grid, the commonly connected termination comparator B of the resistance R10 and resistance R9 output end are described
FET Q1 source electrode connects the charging output cathode, the grounded drain of the FET Q1, institute by the resistance R13
Electric capacity C4 is stated to be connected between the second end of the detection resistance R1 and ground.
5. charger as claimed in claim 4, it is characterised in that the charge protector is described also including indicator lamp LED
Indicator lamp LED is connected between the resistance R13 and the FET Q1 source electrode.
6. charger as claimed in claim 5, it is characterised in that the charge protector also includes a sample circuit, institute
State sample circuit and be connected to the second end and the optocoupler U2 of the detection resistance R1 including resistance R12 and optocoupler U2, the resistance R12
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079117.2U CN206490462U (en) | 2017-01-21 | 2017-01-21 | A kind of charge protector and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079117.2U CN206490462U (en) | 2017-01-21 | 2017-01-21 | A kind of charge protector and charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490462U true CN206490462U (en) | 2017-09-12 |
Family
ID=59766396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720079117.2U Active CN206490462U (en) | 2017-01-21 | 2017-01-21 | A kind of charge protector and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206490462U (en) |
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2017
- 2017-01-21 CN CN201720079117.2U patent/CN206490462U/en active Active
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