CN109038716A - A kind of on-vehicle battery quick-charging circuit - Google Patents
A kind of on-vehicle battery quick-charging circuit Download PDFInfo
- Publication number
- CN109038716A CN109038716A CN201810810579.6A CN201810810579A CN109038716A CN 109038716 A CN109038716 A CN 109038716A CN 201810810579 A CN201810810579 A CN 201810810579A CN 109038716 A CN109038716 A CN 109038716A
- Authority
- CN
- China
- Prior art keywords
- output end
- circuit
- adjustment pipe
- operational amplifier
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Abstract
A kind of on-vehicle battery quick-charging circuit, including connecting charging detecting circuit and pressurization circuit between the first end and a second end, the charging detecting circuit includes the detection resistance for being connected to first end between the circuit output end that pressurizes, first operational amplifier and second operational amplifier, the detection resistance both ends pass through the reversed and positive input of the first regulating resistor and the second regulating resistor connection second operational amplifier respectively, the output end of the first adjustment pipe and second adjustment pipe passes through the first feedback resistance and the second feedback resistance ground connection respectively, the output end of the first adjustment pipe is also connected with the reverse input end of the first operational amplifier, the positive input of first operational amplifier connects a reference voltage.The present invention realizes real-time detection for the electric current in charging process and maintains a higher but reasonable current value always, guarantees not damage battery while improving charging rate, improves charging rate and battery.
Description
Technical field
The invention belongs to electronic fields, are related to a kind of charging equipment, and in particular to a kind of on-vehicle battery quick-charging circuit.
Background technique
When on-vehicle battery is charged, charging current management is to need the problem of paying close attention to, the charging current small then charging time
Long, the superheat state in the long-term charging process of battery causes battery performance and service life to decline, and charging current is equally easy to cause greatly
Battery predisposes to damage, and allows that a suitable charging current is maintained to keep electricity while quick charge in charging process always
Pond performance simultaneously extends battery.
Summary of the invention
To overcome technological deficiency of the existing technology, the invention discloses a kind of on-vehicle battery quick-charging circuits.
On-vehicle battery quick-charging circuit of the present invention, including connecting charging detection between the first end and a second end
Circuit and pressurization circuit, the charging detecting circuit include the detection electricity for being connected to first end between the circuit output end that pressurizes
Resistance, the first operational amplifier and second operational amplifier, the detection resistance both ends pass through the first regulating resistor and second respectively
Regulating resistor connects the reversed and positive input of second operational amplifier, and the reversed and forward direction of the second operational amplifier is defeated
Enter the input terminal that end is also respectively connected with the first adjustment pipe and second adjustment pipe, the control of the first adjustment pipe and second adjustment pipe
End is separately connected the output end of the first operational amplifier and second operational amplifier, the output of the first adjustment pipe and second adjustment pipe
End is grounded by the first feedback resistance and the second feedback resistance respectively, and the output end of the first adjustment pipe is also connected with the first operation
The positive input of the reverse input end of amplifier, first operational amplifier connects a reference voltage；
The function of the pressurization circuit are as follows: according to the voltage value of second adjustment pipe output end, negative-feedback adjustment pressurization circuit is to defeated
Enter the pressurization multiple of power supply and exports the voltage after pressurization to second end.
Preferably, the adjustment pipe is NPN triode.
Preferably, the detection resistance is adjustable resistance.
Preferably, first regulating resistor and the second regulating resistor resistance value are equal, the first feedback resistance and the second feedback
Resistance is equal.
Preferably, the output end of the second adjustment pipe connects a follower input terminal, and the follower output end connects
Connect the pressurization circuit.
Preferably, the pressurization circuit includes inductance, rectifier diode, switching tube, the first analog-digital converter and single-chip microcontroller,
The inductance is connected between rectifier diode anode and second end, and the rectifier diode cathode connecting detection resistance is described
Switching tube input terminal connects rectifier diode anode, output end ground connection, the input terminal connection second of first analog-digital converter
Pipe output end is adjusted, output end connects single-chip microcontroller, and the control terminal of the switching tube is connect with single-chip microcontroller, the function of the single-chip microcontroller
Are as follows: square wave is exported to switch controlled end, and the duty ratio of square wave is adjusted according to the input value of the first analog-digital converter.
Preferably, the pressurization circuit includes that inductance, rectifier diode, switching tube, PWM comparator and triangular wave occur
Device, the inductance are connected between rectifier diode anode and second end, the rectifier diode cathode connecting detection resistance, institute
State switching tube input terminal connection rectifier diode anode, output end ground connection, the positive input connection second of the PWM comparator
Pipe output end is adjusted, reverse input end connects triangular-wave generator output end, the control of the output end connection switch pipe of PWM comparator
End processed.
Further, electric capacity of voltage regulation is connected between the cathode and ground of the rectifier diode.
Further, the first end is also connected with the input terminal of the second analog-digital converter, second analog-digital converter
Output end connects single-chip microcontroller.
Using on-vehicle battery quick-charging circuit of the present invention, real-time detection is realized for the electric current in charging process
And a higher but reasonable current value is maintained always, guarantee not damage battery while improving charging rate, improves charging
Speed and battery.
Detailed description of the invention
Fig. 1 is a kind of specific embodiment schematic diagram of on-vehicle battery quick-charging circuit of the present invention, and Fig. 2 is this hair
Another specific embodiment schematic diagram of the bright on-vehicle battery quick-charging circuit, the entitled P1- of appended drawing reference in figure
One end, P2- second end, P3- third end, T1- the first adjustment pipe, T2- second adjustment pipe, the first feedback resistance of R1-, R2- second
Feedback resistance, the first regulating resistor of R3-, the second regulating resistor of R4-, R5- detection resistance, the first operational amplifier of AMP1-,
AMP2- second operational amplifier, AMP3- follower, the first analog-digital converter of ADC1-, the second analog-digital converter of ADC2-, D- are whole
Flowing diode, L- inductance, N- switching tube, C1- is electrically charged battery, C2- electric capacity of voltage regulation, C3- input power, VREF- reference voltage,
PWM-PWM comparator, TF- triangular-wave generator.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in further detail.
On-vehicle battery quick-charging circuit of the present invention, including the charging being connected between first end P1 and second end P2
Detection circuit and pressurization circuit, the charging detecting circuit include the detection for being connected to first end between the circuit output end that pressurizes
Resistance R5, the first operational amplifier AMP1 and second operational amplifier AMP2, the detection resistance both ends pass through resistance value phase respectively
Deng the first regulating resistor R3 and the second regulating resistor R4 connection second operational amplifier reversed and positive input, described
The reversed and positive input of two operational amplifiers is also respectively connected with the input terminal of the first adjustment pipe T1 and second adjustment pipe T2, institute
The control terminal for stating the first adjustment pipe and second adjustment pipe is separately connected the output of the first operational amplifier and second operational amplifier
The output end of end, the first adjustment pipe and second adjustment pipe passes through the first feedback resistance R1 and the second feedback resistance R2 ground connection respectively,
The output end of the first adjustment pipe is also connected with the reverse input end of the first operational amplifier, and first operational amplifier is just
A reference voltage is connected to input terminal；
The function of the pressurization circuit are as follows: according to the voltage value of second adjustment pipe output end, adjustment pressurization circuit is to input power
Pressurization multiple and export the voltage after pressurization to second end.
If Fig. 1 provides a kind of specific embodiment of the invention, the working principle of the invention is sketched by taking Fig. 1 as an example.
First end connection is electrically charged battery C1 when use, and second end connects input power C3, from input power to being electrically charged
Battery charging.
The negative-feedback connection of first operational amplifier and second operational amplifier makes the positive input of two operational amplifiers
End is equal with reverse input end voltage value, although wherein second operational amplifier feedback end is connect with positive input, due to
What second adjustment pipe was fed back to is collector voltage, and collector voltage and base voltage are acting in oppositions, therefore the second operation is put
Big device is also negative feedback states；Specific embodiment in Fig. 1, as adjustment pipe, can also be used using two NPN triodes
NMOS tube is suitble to rapid feedback of the invention to adjust as adjustment pipe, NPN triode fast response time.
Charging current generates pressure drop on detection resistance R5, and the input terminal voltage difference of two operational amplifiers is equal, can
To obtain the voltage value of voltage on the first feedback resistance equal to reference voltage VREF for VR, since the first feedback resistance and first are adjusted
The series relationship of piezoresistance, the pressure drop on the first regulating resistor are VR*R3/R1；
Assuming that the public terminal voltage value of detection resistance and the first regulating resistor and the second regulating resistor is respectively V1 and V2, then V2-
V1=I5*R5;I5 is the electric current for flowing through detection resistance R5；
The negative-feedback connection of second operational amplifier keeps two input terminal voltage equal, i.e.,
V2- VR*R3/R1=V1-I4R4, I4 are the electric current for flowing through the second regulating resistor R4；
That is I4=(V1-V2+ VR*R3/R1)/R4;
Second regulating resistor is connected with the second feedback resistance, and the two electric current is equal, then the output voltage VO on the second feedback resistance=
I4*R2
=R2*(V1-V2+ VR*R3/R1)/R4
=R2*( I5*R5+ VR*R3/R1)/R4
=VR*(R1/R2)+I5*(R2*R5/R4)； ----①
It can be seen that output voltage VO only changes with I5 and changed, the charging current for flowing through detection resistance can be adjusted by output voltage
I5 makes Working Condition of Interpretative Version more preferably to simplify the calculation and circuit symmetrical, is typically chosen the first regulating resistor and second and adjusts
Piezoresistance resistance value is equal, and the first feedback resistance and the second feedback resistance resistance value are equal；Then 1. formula simplifies at this time are as follows:
VO=VR+I5*R2*R5/R4; -----②
Second adjustment pipe output end is simulated with the second feedback resistance common end output voltage VO by the first analog-digital converter
After voltage value is converted into digital value, it is input to the pressurization times that pressurization circuit controls pressurization circuit using the digital value as value of feedback
Number, using negative feedback control mode, i.e. charging current is bigger, and output voltage VO is bigger, and pressurization multiple reduces, and charging current is opened
Begin to reduce.Second adjustment pipe output end can connect a follower AMP3, carry out following amplification driving energy to output voltage VO
Power samples pressurization circuit convenient for transmitting at a distance.
Each resistance is adjusted if can be seen that from 1. formula and 2. formula, especially the resistance value of detection resistance R5, it can be with
VO follow current I5 changing ratio is adjusted, detection resistance R5 adjustable resistance can be set as, facilitate adjusting.
In the present invention, reverse irrigation detection can also be realized using above-mentioned charging detecting circuit, when one high pressure of first end misconnection
Power supply, electric current flow to the end P2 from the end P1, according to the reasoning of front, similar can obtain
VO=I4*R2
=VR*(R1/R2)-I5*(R2*R5/R4)；
VO is less than VR* (R1/R2) at this time, the correspondence digital value can be stored in single-chip microcontroller, when the VO value for detecting output is small
When VR* (R1/R2), then it can be determined that electric current caused by having there is misconnection flows backward, single-chip microcontroller operation closes pressurization circuit and can
Prompt alarm.
Fig. 1 provide pressurization circuit a specific embodiment, pressurization circuit include inductance, rectifier diode, switching tube,
First analog-digital converter and single-chip microcontroller, the inductance are connected between rectifier diode anode and second end, two poles of the rectification
Pipe cathode connecting detection resistance, the switching tube input terminal connection rectifier diode anode, output end ground connection, first modulus
The input terminal of converter connects second adjustment pipe output end, and output end connects single-chip microcontroller, the control terminal and monolithic of the switching tube
Machine connection, the function of the single-chip microcontroller are as follows: export square wave to switch controlled end, and according to the input value of the first analog-digital converter
Adjust the duty ratio of square wave.
Such as by taking booster circuit shown in FIG. 1 as an example, using rectifier diode D, inductance L is similar with switching tube N composition
The switch power supply topological structure of BOOST framework, under the topological structure, the duty ratio DN of switching tube is bigger, then the multiple that pressurizes is bigger,
Pressurization multiple is 1/1-DN；It is input to single-chip microcontroller, single-chip microcontroller after being converted into digital value using output voltage VO as sampled value
According to the duty ratio of input digital value control output square wave, the output voltage VO value of the digital value characterization of input is higher, then accordingly
Duty ratio is reduced, it is on the contrary then increase duty ratio to reduce the pressurization multiple of pressurization circuit, increase the multiple that pressurizes, in single-chip microcontroller
A digital value can be stored in advance and be compared as benchmark with sampled value and judged.
An electric capacity of voltage regulation C2 can be connected between rectifier diode cathode and ground, utilize it as pressurization circuit output
The storage capacitor at end is to be electrically charged battery charging.There are many modes complete in the prior art the judgement of battery charging complete
At being usually all that detection is electrically charged the voltage value of battery, then prompt or automatically cut off charging circuit when reaching rated value, such as scheme
In specific embodiment shown in 1, it is electrically charged cell voltage using the acquisition of the second analog-digital converter, and output digit signals are to singly
Piece machine judges whether charging complete by single-chip microcontroller, and waits for an opportunity charge closing circuit.
Fig. 2 provides another specific embodiment that pressurization is realized using analog form.
Pressurization circuit includes inductance, rectifier diode D, switching tube N, PWM comparator and triangular-wave generator described in Fig. 2
TF, the inductance are connected between rectifier diode anode and second end, the rectifier diode cathode connecting detection resistance, institute
State switching tube input terminal connection rectifier diode anode, output end ground connection, the positive input connection second of the PWM comparator
Pipe output end is adjusted, reverse input end connects triangular-wave generator output end, the control of the output end connection switch pipe of PWM comparator
End processed.
The analog voltage fed back to is bigger, and the duty cycle square wave exported after being compared with triangular-wave generator is smaller,
To realize negative-feedback regu- lation.
Using on-vehicle battery quick-charging circuit of the present invention, real-time detection is realized for the electric current in charging process
And a higher but reasonable current value is maintained always, guarantee not damage battery while improving charging rate, improves charging
Speed and battery.
Previously described is each preferred embodiment of the invention, if the preferred embodiment in each preferred embodiment
It is not obvious contradictory or premised on a certain preferred embodiment, each preferred embodiment can any stack combinations
Use, the design parameter in the embodiment and embodiment only for the purpose of clearly stating the inventor's invention verification process, and
It is non-to limit scope of patent protection of the invention, scope of patent protection of the invention is still subject to the claims, all
It is that similarly should be included in protection model of the invention with the variation of equivalent structure made by specification and accompanying drawing content of the invention
In enclosing.
Claims (9)
1. a kind of on-vehicle battery quick-charging circuit, which is characterized in that including connecting charging between the first end and a second end
Detection circuit and pressurization circuit, the charging detecting circuit include the detection for being connected to first end between the circuit output end that pressurizes
Resistance, the first operational amplifier and second operational amplifier, the detection resistance both ends pass through the first regulating resistor and respectively
Two regulating resistors connect second operational amplifier reversed and positive input, the second operational amplifier it is reversed and positive
Input terminal is also respectively connected with the input terminal of the first adjustment pipe and second adjustment pipe, the control of the first adjustment pipe and second adjustment pipe
End processed is separately connected the output end of the first operational amplifier and second operational amplifier, the first adjustment pipe and second adjustment pipe it is defeated
Outlet passes through the first feedback resistance and the second feedback resistance ground connection respectively, and the output end of the first adjustment pipe is also connected with the first fortune
The reverse input end of amplifier is calculated, the positive input of first operational amplifier connects a reference voltage；
The function of the pressurization circuit are as follows: according to the voltage value of second adjustment pipe output end, negative-feedback adjustment pressurization circuit is to defeated
Enter the pressurization multiple of power supply and exports the voltage after pressurization to second end.
2. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that the adjustment pipe is NPN triode.
3. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that the detection resistance is adjustable electric
Resistance.
4. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that first regulating resistor and second
Regulating resistor resistance value is equal, and the first feedback resistance and the second feedback resistance resistance value are equal.
5. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that the output end of the second adjustment pipe
A follower input terminal is connected, the follower output end connects the pressurization circuit.
6. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that the pressurization circuit include inductance,
Rectifier diode, switching tube, the first analog-digital converter and single-chip microcontroller, the inductance are connected on rectifier diode anode and second end
Between, the rectifier diode cathode connecting detection resistance, the switching tube input terminal connection rectifier diode anode, output end
Ground connection, the input terminal of first analog-digital converter connect second adjustment pipe output end, and output end connects single-chip microcontroller, the switch
The control terminal of pipe is connect with single-chip microcontroller, the function of the single-chip microcontroller are as follows: exports square wave to switch controlled end, and according to the first mould
The duty ratio of the input value adjustment square wave of number converter.
7. on-vehicle battery quick-charging circuit as described in claim 1, which is characterized in that the pressurization circuit include inductance,
Rectifier diode, switching tube, PWM comparator and triangular-wave generator, the inductance are connected on rectifier diode anode and second
Between end, the rectifier diode cathode connecting detection resistance, the switching tube input terminal connection rectifier diode anode, output
The positive input of end ground connection, the PWM comparator connects second adjustment pipe output end, and reverse input end connects triangular wave
Device output end, the control terminal of the output end connection switch pipe of PWM comparator.
8. on-vehicle battery quick-charging circuit as claimed in claims 6 or 7, which is characterized in that the rectifier diode is born
Electric capacity of voltage regulation is connected between pole and ground.
9. on-vehicle battery quick-charging circuit as claimed in claim 6, which is characterized in that the first end is also connected with the second mould
The output end of the input terminal of number converter, second analog-digital converter connects single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810579.6A CN109038716A (en) | 2018-07-23 | 2018-07-23 | A kind of on-vehicle battery quick-charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810579.6A CN109038716A (en) | 2018-07-23 | 2018-07-23 | A kind of on-vehicle battery quick-charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109038716A true CN109038716A (en) | 2018-12-18 |
Family
ID=64645141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810810579.6A Pending CN109038716A (en) | 2018-07-23 | 2018-07-23 | A kind of on-vehicle battery quick-charging circuit |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022155856A1 (en) * | 2021-01-21 | 2022-07-28 | 华为技术有限公司 | Charging circuit of battery, and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897402A (en) * | 2005-07-11 | 2007-01-17 | 李建国 | High-speed multi-stage charging system and method for self-adaptive tractive dynamic battery |
| CN201207579Y (en) * | 2008-05-30 | 2009-03-11 | 比亚迪股份有限公司 | Battery charger |
| CN102946131A (en) * | 2012-11-30 | 2013-02-27 | 矽力杰半导体技术(杭州)有限公司 | Adaptive input power charger and method for controlling input current of charger |
-
2018
- 2018-07-23 CN CN201810810579.6A patent/CN109038716A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897402A (en) * | 2005-07-11 | 2007-01-17 | 李建国 | High-speed multi-stage charging system and method for self-adaptive tractive dynamic battery |
| CN201207579Y (en) * | 2008-05-30 | 2009-03-11 | 比亚迪股份有限公司 | Battery charger |
| CN102946131A (en) * | 2012-11-30 | 2013-02-27 | 矽力杰半导体技术(杭州)有限公司 | Adaptive input power charger and method for controlling input current of charger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022155856A1 (en) * | 2021-01-21 | 2022-07-28 | 华为技术有限公司 | Charging circuit of battery, and electronic device |
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Application publication date: 20181218 |