CN105071483B - A kind of charging circuit for showing charged state and Intelligent bracelet charger - Google Patents
A kind of charging circuit for showing charged state and Intelligent bracelet charger Download PDFInfo
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- CN105071483B CN105071483B CN201510526299.9A CN201510526299A CN105071483B CN 105071483 B CN105071483 B CN 105071483B CN 201510526299 A CN201510526299 A CN 201510526299A CN 105071483 B CN105071483 B CN 105071483B
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Abstract
The present invention relates to Charge Management technical field, more particularly to a kind of charging circuit for showing charged state and Intelligent bracelet charger.In an embodiment of the present invention, the charging circuit for showing charged state includes electric current induction module, charging input voltage feedback module, voltage comparison module and display module, the input voltage of the charge management circuit of charge input voltage value and charging load is compared by the voltage comparison module, if the charging input voltage value is less than the input voltage of the charge management circuit of the charging load, then control the display module to show green light, judge that charging has been completed.The charging circuit that charged state can be shown is placed in Intelligent bracelet charger by the embodiment of the present invention, when being charged to Intelligent bracelet, both the charged state of Intelligent bracelet can be visually known, the power consumption of Intelligent bracelet its cells module is reduced again, and has saved the size of Intelligent bracelet mainboard.
Description
Technical field
The present invention relates to Charge Management technical field, more particularly to a kind of charging circuit and intelligence for showing charged state
Bracelet charger.
Background technology
Intelligent bracelet is more and more universal in daily life, and the battery charging management mode of current Intelligent bracelet has two
Kind, one kind is that bracelet and bracelet charger do not use LED to show, if user wants to understand bracelet charged state, it is necessary to pass through
Intelligent terminal (such as mobile phone) the corresponding APP being connected with bracelet checks the charged state of bracelet, and the shortcoming of this mode is：With
Family can not be visually known the charged state of bracelet；Another way is that the LED that can show charged state is placed on into intelligence
On the mainboard of bracelet, LED is controlled by the Charge Management part of bracelet and then charged state is shown, although this mode can be with
The charged state of bracelet battery is visually known, but because LED is placed on bracelet mainboard, adds the whole of bracelet battery
Body power consumption, while also increasing the overall dimensions of bracelet mainboard.
The content of the invention
It is an object of the invention to provide a kind of charging circuit for showing charged state and Intelligent bracelet charger, it is intended to
Solve in the prior art user when being charged to Intelligent bracelet, it is necessary to check bracelet by the terminal being connected with Intelligent bracelet
Charged state, it is impossible to be visually known Intelligent bracelet charged state, and Intelligent bracelet charged state is shown mould by prior art
Block is arranged on Intelligent bracelet Charge Management mainboard, adds the overall dimensions of Intelligent bracelet battery overall power and bracelet mainboard
The problem of.
The present invention is achieved in that the first embodiment of the present invention provides a kind of charging electricity for showing charged state
Road, the charging circuit for showing charged state includes：
Display module；
The charging input current value of USB charging ends is gathered, and the charging input current value is converted into charging input electricity
The electric current induction module of pressure value；
It is connected with the charge management circuit of the charging load, to the input electricity of the charge management circuit of the charging load
Press the charging input voltage feedback module fed back；
It is connected respectively with the display module, electric current induction module and charging input voltage feedback module, by the charging
The input voltage of input voltage value and the charge management circuit is compared, if the charging input voltage value is less than described fill
Fulgurite manages the input voltage of circuit, then controls the display module to show green light, judges the completed voltage comparison module of charging.
Further, the electric current induction module uses electric current inductive reactance R1, the two ends of the electric current inductive reactance R1
The charge management circuit of USB charging ends and charging load is connect respectively.
Further, the charging input voltage feedback module includes：
Voltage stabilizing chip U1, the first divider resistance R4, the second divider resistance R5 and filter capacitor C1；
The voltage input end Vin of the voltage stabilizing chip U1 is connected with the charge management circuit of the charging load；It is described steady
Pressure chip U1 voltage output end Vout connects the first end of the first divider resistance R4, the second of the first divider resistance R4
Terminate the voltage comparison module；The earth terminal GND ground connection of the voltage stabilizing chip；The first end of the second divider resistance R5 is led to
The second termination for crossing voltage output end Vout, the second divider resistance R5 that the filter capacitor C1 meets voltage stabilizing chip U1 is described
Voltage comparison module.
Further, the voltage comparison module includes：
First operational amplifier OP1 and the second operational amplifier OP2；
The in-phase input end of the first operational amplifier OP1 meets the electric current inductive reactance R1 respectively with inverting input
Two ends, output termination the second amplifier OP2 of the first operational amplifier OP1 in-phase input end；Described second
Operational amplifier OP2 anti-phase input terminates the second end of the first divider resistance R4, the second operational amplifier OP2's
The output termination display module.
Further, the display module includes：
First current-limiting resistance R2, the second current-limiting resistance R3, the first display lamp LED1 and the second display lamp LED2；
The negative pole of the first display lamp LED1 is connected with the output end of the second operational amplifier OP2, and described first
Display lamp LED1 positive pole connects 5V positive supplies by the first current-limiting resistance R2；The positive pole of the second display lamp LED2 passes through
The second current-limiting resistance R3 is connected with the positive pole of the second operational amplifier OP2, the negative pole of the second display lamp LED2
Ground connection.
The second embodiment of the present invention provides a kind of Intelligent bracelet charger, and the Intelligent bracelet charger includes first
What embodiment was provided shows the charging circuit of charged state, and the charging load is Intelligent bracelet.
In an embodiment of the present invention, the charging circuit for showing charged state includes electric current induction module, charging
Input voltage feedback module, voltage comparison module and display module, the voltage comparison module will charge input voltage value with filling
The input voltage of the charge management circuit of electric loading is compared, if the charging input voltage value is less than the charging load
The input voltage of charge management circuit, then control the display module to show green light, judges that charging has been completed.The embodiment of the present invention
The charging circuit that charged state can be shown is placed in Intelligent bracelet charger, both can be with when being charged to Intelligent bracelet
The charged state of Intelligent bracelet is visually known, the power consumption of Intelligent bracelet its cells module is reduced again, and has saved intelligence
The size of energy bracelet mainboard.
Brief description of the drawings
Fig. 1 is the module map for the charging circuit for showing charged state that first embodiment of the invention is provided；
Fig. 2 is the circuit diagram for the charging circuit for showing charged state that first embodiment of the invention is provided.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
First embodiment
The first embodiment of the present invention provides a kind of charging circuit for showing charged state.
Fig. 1 shows the module map for the charging circuit for showing charged state that first embodiment of the invention is provided.In order to
It is easy to explanation, illustrate only the part related to the embodiment of the present invention.
A kind of charging circuit for showing charged state, is connected to the charge management circuit of USB charging ends and charging load
Between, the charging circuit for showing charged state includes：Electric current induction module 1, charging input voltage feedback module 2, electricity
Press comparison module 3 and display module 4；
Voltage comparison module 3 connects with electric current induction module 1, charging input voltage feedback module 2 and display module 4 respectively
Connect；
Electric current induction module 1 is used for gathering the charging input current value of USB charging ends, and charging input current value is changed
For charging input voltage value, voltage comparison module 3 is by the input electricity of charging input voltage value and the charge management circuit
Pressure is compared, and controls the progress of display module 4 charged state to show according to comparative result, is specially：If the charging
Input voltage value is more than the input voltage of the charge management circuit, then the control of voltage comparison module 3 display module 4 shows red
Lamp, expression is charged；If the charging input voltage value is less than the input voltage of the charge management circuit, voltage
The control display module 4 of comparison module 3 shows green light, represents that charging has been completed.
Fig. 2 shows the circuit diagram for the charging circuit for showing charged state that first embodiment of the invention is provided.In order to
It is easy to explanation, illustrate only the part related to the embodiment of the present invention.
The charging circuit for showing charged state includes：Electric current inductive reactance R1, the first current-limiting resistance R2, the second limit
Leakage resistance R3, the first display lamp LED1 and the second display lamp LED2, voltage stabilizing chip U1, the first divider resistance R4, the second partial pressure electricity
Hinder R5, the first operational amplifier OP1 and the second operational amplifier OP2；
Electric current inductive reactance R1 is connected between the USB charging ends and the charge management circuit of the charging load, is used
To gather the charging input current value of USB charging ends, and electric input current value is converted into charging input voltage value；
Voltage stabilizing chip U1 voltage input end Vin is connected with the charge management circuit of the charging load；Voltage stabilizing chip U1
Voltage output end Vout connect the first divider resistance R4 first end, the first divider resistance R4 the second termination voltage ratio compared with
Module 3；Voltage stabilizing chip U1 earth terminal GND ground connection；Second divider resistance R5 first end connects voltage stabilizing core by filter capacitor C1
Piece U1 voltage output end Vout, the second divider resistance R5 the second termination voltage comparison module 3；
First operational amplifier OP1 in-phase input end connects electric current inductive reactance R1 two ends with inverting input respectively,
First operational amplifier OP1 the second amplifier OP2 of output termination in-phase input end；Second operational amplifier OP2's is anti-phase
The first divider resistance R4 of input termination the second end, the second operational amplifier OP2 output termination display module 4；
First display lamp LED1 negative pole is connected with the second operational amplifier OP2 output end, the first display lamp LED1's
Positive pole connects 5V positive supplies by the first current-limiting resistance R2；Second display lamp LED2 positive pole passes through the second current-limiting resistance R3 and second
Operational amplifier OP2 positive pole connection, the second display lamp LED2 negative pole ground connection.
The operation principle of the charging circuit for showing charged state is as follows：First, adopted by electric current inductive reactance R1
Collect the charging input current value of USB charging ends, and charging input current value is converted into charging input voltage value；Then, by institute
State charging input voltage value be amplified by the first operational amplifier OP1 after, feeding the second operational amplifier OP2 filled with described
The input voltage of fulgurite reason circuit is compared, if the charging input voltage value is more than the input electricity of the charge management circuit
Pressure, then the second operational amplifier OP2 is output as high level, and the second display lamp LED2 sends out a warning, and expression is charged；If
The charging input voltage value is less than the input voltage of the charge management circuit, then the second operational amplifier OP2 is output as
Low level, the first display lamp LED1 gives a green light, and represents that charging has been completed.
What first embodiment of the invention was provided shows that the charging circuit of charged state charges to charging load
While, it can clearly illustrate that the charge condition of charging load is carried out, user is more visually known charging load
Charge condition.
Second embodiment
The second embodiment of the present invention provides a kind of Intelligent bracelet charger.
The Intelligent bracelet charger includes the charging circuit for showing charged state that first embodiment is provided, described to fill
Electric loading is Intelligent bracelet.
The charging circuit of charged state can be shown, is connected between USB charging ends and the charge management circuit of Intelligent bracelet,
The charging circuit for showing charged state includes：Electric current induction module 1, charging input voltage feedback module 2, voltage ratio compared with
Module 3 and display module 4；
Voltage comparison module 3 connects with electric current induction module 1, charging input voltage feedback module 2 and display module 4 respectively
Connect；
Electric current induction module 1 is used for gathering the charging input current value of USB charging ends, and charging input current value is changed
For charging input voltage value, voltage comparison module 3 is by the input electricity of charging input voltage value and the charge management circuit
Pressure is compared, and controls the progress of display module 4 charged state to show according to comparative result, is specially：If the charging input
Magnitude of voltage is more than the input voltage of the charge management circuit, then the control of voltage comparison module 3 display module 4 shows red light, table
Show and charged；If it is described charging input voltage value be less than the charge management circuit input voltage, voltage ratio compared with
The control display module 4 of module 3 shows green light, represents that charging has been completed.
The charging circuit for showing charged state includes：Electric current inductive reactance R1, the first current-limiting resistance R2, the second limit
Leakage resistance R3, the first display lamp LED1 and the second display lamp LED2, voltage stabilizing chip U1, the first divider resistance R4, the second partial pressure electricity
Hinder R5, the first operational amplifier OP1 and the second operational amplifier OP2；
Electric current inductive reactance R1 is connected between the USB charging ends and the charge management circuit of the Intelligent bracelet, is used
To gather the charging input current value of USB charging ends, and electric input current value is converted into charging input voltage value；
Voltage stabilizing chip U1 voltage input end Vin is connected with the charge management circuit of the Intelligent bracelet；Voltage stabilizing chip U1
Voltage output end Vout connect the first divider resistance R4 first end, the first divider resistance R4 the second termination voltage ratio compared with
Module 3；Voltage stabilizing chip U1 earth terminal GND ground connection；Second divider resistance R5 first end connects voltage stabilizing core by filter capacitor C1
Piece U1 voltage output end Vout, the second divider resistance R5 the second termination voltage comparison module 3；
First operational amplifier OP1 in-phase input end connects electric current inductive reactance R1 two ends with inverting input respectively,
First operational amplifier OP1 the second amplifier OP2 of output termination in-phase input end；Second operational amplifier OP2's is anti-phase
The first divider resistance R4 of input termination the second end, the second operational amplifier OP2 output termination display module 4；
First display lamp LED1 negative pole is connected with the second operational amplifier OP2 output end, the first display lamp LED1's
Positive pole connects 5V positive supplies by the first current-limiting resistance R2；Second display lamp LED2 positive pole passes through the second current-limiting resistance R3 and second
Operational amplifier OP2 positive pole connection, the second display lamp LED2 negative pole ground connection.
The operation principle of the charging circuit for showing charged state is as follows：First, adopted by electric current inductive reactance R1
Collect the charging input current value of USB charging ends, and charging input current value is converted into charging input voltage value；Then, by institute
State charging input voltage value be amplified by the first operational amplifier OP1 after, feeding the second operational amplifier OP2 filled with described
The input voltage of fulgurite reason circuit is compared, if the charging input voltage value is more than the input electricity of the charge management circuit
Pressure, then the second operational amplifier OP2 is output as high level, and the second display lamp LED2 sends out a warning, and expression is charged；If
The charging input voltage value is less than the input voltage of the charge management circuit, then the second operational amplifier OP2 is output as
Low level, the first display lamp LED1 gives a green light, and represents that charging has been completed.
The Intelligent bracelet charger that second embodiment of the invention is provided includes that the charging circuit of charged state can be shown.Will
It can show that the charging circuit of charged state in Intelligent bracelet charger, can both be visually known the charging of Intelligent bracelet battery
State, reduces the power consumption of Intelligent bracelet its cells module again, and has saved the size of Intelligent bracelet mainboard.
In an embodiment of the present invention, the charging circuit for showing charged state includes electric current induction module, charging
Input voltage feedback module, voltage comparison module and display module, the voltage comparison module will charge input voltage value with filling
The input voltage of the charge management circuit of electric loading is compared, if the charging input voltage value is less than the charging load
The input voltage of charge management circuit, then control the display module to show green light, judges that charging has been completed.The embodiment of the present invention
The charging circuit that charged state can be shown is placed in Intelligent bracelet charger, both can be with when being charged to Intelligent bracelet
The charged state of Intelligent bracelet is visually known, the power consumption of Intelligent bracelet its cells module is reduced again, and has saved intelligence
The size of energy bracelet mainboard.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (3)
1. a kind of charging circuit for showing charged state, be connected to USB charging ends and charging load charge management circuit it
Between, it is characterised in that the charging circuit for showing charged state includes：
Display module；
The charging input current value of USB charging ends is gathered, and the charging input current value is converted into charging input voltage value
Electric current induction module；
It is connected with the charge management circuit of the charging load, the input voltage of the charge management circuit of the charging load is entered
The charging input voltage feedback module of row feedback；
It is connected respectively with the display module, electric current induction module and charging input voltage feedback module, the charging is inputted
The input voltage of magnitude of voltage and the charge management circuit is compared, if the charging input voltage value is less than the charging valve
The input voltage of circuit is managed, then controls the display module to show green light, the completed voltage comparison module of charging is judged；
The electric current induction module connects USB chargings respectively using electric current inductive reactance R1, the electric current inductive reactance R1 two ends
End and the charge management circuit of charging load；
The charging input voltage feedback module includes：
Voltage stabilizing chip U1, the first divider resistance R4, the second divider resistance R5 and filter capacitor C1；
The voltage input end Vin of the voltage stabilizing chip U1 is connected with the charge management circuit of the charging load；The voltage stabilizing core
Piece U1 voltage output end Vout connects the first end of the first divider resistance R4, the second termination of the first divider resistance R4
The voltage comparison module；The earth terminal GND ground connection of the voltage stabilizing chip；The first end of the second divider resistance R5 passes through institute
State the second termination voltage that filter capacitor C1 meets voltage stabilizing chip U1 voltage output end Vout, the second divider resistance R5
Comparison module；
The voltage comparison module includes：
First operational amplifier OP1 and the second operational amplifier OP2；
The in-phase input end of the first operational amplifier OP1 connects the two of the electric current inductive reactance R1 respectively with inverting input
End, output termination the second operational amplifier OP2 of the first operational amplifier OP1 in-phase input end；Described second
Operational amplifier OP2 anti-phase input terminates the second end of the first divider resistance R4, the second operational amplifier OP2's
The output termination display module.
2. the charging circuit of charged state can be shown as claimed in claim 1, it is characterised in that the display module includes：
First current-limiting resistance R2, the second current-limiting resistance R3, the first display lamp LED1 and the second display lamp LED2；
The negative pole of the first display lamp LED1 is connected with the output end of the second operational amplifier OP2, first display
Lamp LED1 positive pole connects 5V positive supplies by the first current-limiting resistance R2；The positive pole of the second display lamp LED2 passes through described
Second current-limiting resistance R3 is connected with the positive pole of the second operational amplifier OP2, the negative pole ground connection of the second display lamp LED2.
3. a kind of Intelligent bracelet charger, it is characterised in that the Intelligent bracelet charger includes as claimed in claim 1 or 2
The charging circuit for showing charged state, the charging load be Intelligent bracelet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510526299.9A CN105071483B (en) | 2015-08-25 | 2015-08-25 | A kind of charging circuit for showing charged state and Intelligent bracelet charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510526299.9A CN105071483B (en) | 2015-08-25 | 2015-08-25 | A kind of charging circuit for showing charged state and Intelligent bracelet charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105071483A CN105071483A (en) | 2015-11-18 |
| CN105071483B true CN105071483B (en) | 2017-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510526299.9A Active CN105071483B (en) | 2015-08-25 | 2015-08-25 | A kind of charging circuit for showing charged state and Intelligent bracelet charger |
Country Status (1)
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| CN (1) | CN105071483B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968454A (en) * | 2017-11-27 | 2018-04-27 | 深圳还是威健康科技有限公司 | A kind of rechargeable battery and its charging circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369353C (en) * | 2004-06-10 | 2008-02-13 | 孙逸平 | Charger for cell |
| CN2766437Y (en) * | 2004-11-22 | 2006-03-22 | 郑波 | USB charge lamp capable of displaying charging state |
| US20120161547A1 (en) * | 2010-12-27 | 2012-06-28 | Ever Win International Corporation | USB AC Adapter With Automatic Built-In Power Switch |
| CN104242371B (en) * | 2013-06-24 | 2019-06-28 | 惠州市吉瑞科技有限公司 | The USB charger and its electric quantity display method that charged pool bar electricity is shown |
| CN203491727U (en) * | 2013-07-11 | 2014-03-19 | 向智勇 | USB charger for electronic cigarette |
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2015
- 2015-08-25 CN CN201510526299.9A patent/CN105071483B/en active Active
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| Publication number | Publication date |
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| CN105071483A (en) | 2015-11-18 |
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Effective date of registration: 20160201 Address after: Osaka snow Kong Industrial Zone of Longgang District of Shenzhen City, Guangdong province 518000 and five Avenue Beiyuan Industrial Park sign Applicant after: HESVIT HEALTH TECH CO., LTD. Address before: Osaka snow Kong Industrial Zone of Longgang District of Shenzhen City, Guangdong province 518000 and five Avenue Beiyuan Industrial Park sign Applicant before: Yuanzheng Science and Technology Co., Ltd., Shenzhen City |
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Effective date of registration: 20190416 Address after: 518000 Guangdong province Shenzhen Longgang District Bantian Street five and Avenue North 4012 Yuan Zheng Industrial Park. Patentee after: Yuanzheng Science and Technology Co., Ltd., Shenzhen City Address before: 518000 Shenzhen, Guangdong province Longgang District ban Xue Gang Industrial Zone five and Avenue North Yuan Zheng Industrial Park. Patentee before: HESVIT HEALTH TECH CO., LTD. |