CN110212623A - A kind of lithium battery charging device and charger - Google Patents
A kind of lithium battery charging device and charger Download PDFInfo
- Publication number
- CN110212623A CN110212623A CN201811553180.0A CN201811553180A CN110212623A CN 110212623 A CN110212623 A CN 110212623A CN 201811553180 A CN201811553180 A CN 201811553180A CN 110212623 A CN110212623 A CN 110212623A
- Authority
- CN
- China
- Prior art keywords
- unit
- direct current
- voltage
- lithium battery
- connect
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 58
- 238000005070 sampling Methods 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 230000005669 field effect Effects 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 15
- 230000005764 inhibitory process Effects 0.000 claims description 12
- 230000002401 inhibitory effect Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- H02J7/045—
Abstract
The invention belongs to field of power supplies, a kind of lithium battery charging device and charger are disclosed, changeover control signal is generated by TCU transfer control unit based on the feedback signal；First direct current is converted to the second direct current according to changeover control signal by voltage conversion unit；Filter unit is electrically generated third direct current according to the second direct current；Switch unit is connected to or turns off the third direct current according to mode control signal；Out-put supply sampling unit is electrically generated out-put supply sampled voltage according to third direct current；Logic control element generates mode control signal and adjustment voltage according to out-put supply sampled voltage；Opto-coupled feedback unit generates feedback signal according to adjustment voltage；It since mode control signal may include high level, low level and the first pulse width modulating signal, therefore realizes and is charged in different phase according to different voltage, it is therefore prevented that the aging of lithium battery improves the service life of lithium battery.
Description
Technical field
The invention belongs to field of power supplies more particularly to a kind of lithium battery charging devices and charger.
Background technique
The capacity of battery is improved, is people to realize the longest product working time through the smallest battery of physical size
Target all the time.But in some applications, longer battery life, more charging times or safer battery
But more even more important than battery capacity.
Current nearly all high-effect portable product, all using the rechargeable including lithium ion polymer battery
Lithium battery, the reasons why doing so, are very simple, because lithium battery energy with higher is close compared with other rechargeable batteries
The advantage that degree, higher cell voltage, self discharging are few, cycle lie is very long, environmentally friendly, charging and maintenance are all more simple.
There are many item that the charging of lithium battery needs to pay attention to.Basic concept is to be charged to each battery first with constant current
Core is all 4.2V.Then charger must switch to constant voltage mode, and with the reduction of charging current, charger must make battery
Core maintains 4.2V, stops charging when the electric current small ratio to some initial charge current.Some manufacturers determine specification
In the 2%-3% of initial current, although other numerical value are also possible, but to the difference very little of battery capacity.
And traditional lithium battery charging device charging when be only capable of charging with predetermined voltage, cause lithium battery it is easy to aging to
Reduce service life.
Summary of the invention
The present invention provides a kind of lithium battery charging device and chargers, it is intended to solve traditional technology lithium battery charging device
It is middle to there are problems that being only capable of causing lithium battery easy to aging and service life reduction with predetermined voltage charging.
The invention is realized in this way a kind of lithium battery charging device, lithium battery charging device include:
Lithium battery charging device includes:
For being electrically generated the rectification unit of the first direct current according to input AC；
It is connect with the rectification unit, for generating the TCU transfer control unit of changeover control signal based on the feedback signal；
Connect with the rectification unit and the shift control module, for according to the changeover control signal by described the
One direct current is converted to the voltage conversion unit of the second direct current；
It is connect with the voltage conversion unit, for being electrically generated the filtering list of third direct current according to second direct current
Member；
It is connect with the filter unit, for being connected to or turning off the switch of the third direct current according to mode control signal
Unit；The mode control signal includes high level, low level and the first pulse width modulating signal；
It is connect with the switch unit, for being electrically generated the output electricity of out-put supply sampled voltage according to the third direct current
Source sampling unit；
It is connect with the out-put supply sampling unit, for generating the mode control according to the out-put supply sampled voltage
The logic control element of signal processed and adjustment voltage；
It is connect with the filter unit and described control unit, for generating the feedback signal according to the adjustment voltage
Opto-coupled feedback unit.
The voltage conversion unit is transformer in one of the embodiments, and the transformer includes primary side inductance, auxiliary
Help inductance and secondary inductance；
The secondary inductance exports crude sampling voltage；
The logic control element is specifically used for generating conversion and control letter with the crude sampling voltage based on the feedback signal
Number.
In one of the embodiments, further include:
It is connect with the voltage conversion unit, for generating the first internal electric source, master reference according to original internal power supply
The DC conversion unit of electric current, the first sampled voltage and first voltage.
The voltage conversion unit is also used to be converted to first direct current according to the changeover control signal original
Internal electric source.
In one of the embodiments, further include:
With the logic control element, the opto-coupled feedback unit, the out-put supply sampling unit and the switch
Unit connection, for generating adjustment electric current according to the third direct current, the master reference electric current and auxiliary base electric current
Adjustment current generating unit；
The logic control element is also used to be adopted according to first internal electric source, first sampled voltage and second
Sample voltage generates the auxiliary base electric current；
The filter unit is also used to be electrically generated second voltage and second sampled voltage according to second direct current；
The opto-coupled feedback unit be specifically used for according to the first voltage, the second voltage, the adjustment voltage and
The adjustment electric current generates the feedback signal.
In one of the embodiments, further include:
It connect with the Logic control module, is put for being sampled and being amplified to the third direct current with generating sampling
The amplifying unit of big voltage；
According to the indicative indicating unit of indication signal；
The logic control element is also used to generate indication signal according to the amplifier voltage.
In one of the embodiments, further include:
It is connect with the rectification unit, for inhibiting the first of electromagnetic interference of the input AC electricity to inhibit unit；
The rectification unit is specifically used for being electrically generated first direct current according to the input AC after inhibition electromagnetic interference.
In one of the embodiments, further include:
It is connect with the switch unit, for inhibiting the second of electromagnetic interference of the third direct current to inhibit unit；
The out-put supply sampling unit is specifically used for being electrically generated according to the third direct current after inhibition electromagnetic interference defeated
Power supply sampled voltage out.
The rectification unit includes: in one of the embodiments,
For being electrically generated the rectification module of the 4th direct current according to the input AC；
It is connect with the rectification module, for being electrically generated the filtering mould of first direct current according to the 4th direct current
Block.
The switch unit includes the first field-effect tube, the second field-effect tube, the one or two pole in one of the embodiments,
Pipe, first resistor, second resistance, 3rd resistor and the 4th resistance；
The source electrode of first field-effect tube and the first end of the first resistor collectively form the of the switch unit
The first end of one input terminal, the grid of first field-effect tube and the second end of the first resistor and the second resistance connects
It connects, the drain electrode of first field-effect tube is connect with the anode of the first diode, and the cathode of the first diode is institute
The first output end of switch unit is stated, the second end of the second resistance is connect with the drain electrode of second field-effect tube, described
The grid of second field-effect tube is connect with the first end of the 3rd resistor, and the second end of the 3rd resistor is that the switch is single
The control terminal of member, the first end of the 4th resistance and the source electrode of second field-effect tube are connected to power ground altogether, and the described 4th
The second end of resistance is the second output terminal of the switch unit.
The embodiment of the present invention also provides a kind of charger, including such as above-mentioned lithium battery charging device.
The embodiment of the present invention is electrically generated out-put supply sampled voltage according to third direct current by out-put supply sampling unit；It patrols
Volume control unit according to out-put supply sampled voltage generate mode control signal switch unit be connected to according to mode control signal or
Third direct current is turned off to charge to lithium battery；Due to Logic control module can export including high level, low level and
The mode control signal of first pulse width modulating signal；To which lithium battery charging can be in the different stages with different voltage
It charges, prevents aging of lithium battery, to improve the service life of lithium battery, increase the competitiveness of product in market.
Detailed description of the invention
Technological invention in order to illustrate the embodiments of the present invention more clearly will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 2 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 3 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 4 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 5 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 6 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 7 is another module principle block diagram of lithium battery charging device provided in an embodiment of the present invention；
Fig. 8 is a kind of module principle block diagram of lithium battery charging device rectification module provided in an embodiment of the present invention；
Fig. 9 is the exemplary circuit structure chart of lithium battery charging device provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 shows the modular structure of lithium battery charging device provided in an embodiment of the present invention, for ease of description, only shows
Go out part related to the embodiment of the present invention, details are as follows:
Lithium battery charging device includes rectification unit 01, TCU transfer control unit 02, voltage conversion unit 03, filter unit
04, switch unit 05, out-put supply sampling unit 06, logic control element 07 and opto-coupled feedback unit 08.
Rectification unit 01 is used to be electrically generated the first direct current according to input AC；TCU transfer control unit 02 and rectification unit 01
Connection, for generating changeover control signal based on the feedback signal；Voltage conversion unit 03 and rectification unit 01 and conversion and control mould
Block connection, for the first direct current to be converted to the second direct current according to changeover control signal；Filter unit 04 and voltage are converted
Unit 03 connects, for being electrically generated third direct current according to the second direct current；Switch unit 05 is connect with filter unit 04, is used for root
Third direct current is connected to or turned off according to mode control signal；Mode control signal includes that high level, low level and the first pulse are wide
Spend modulated signal；Out-put supply sampling unit 06 is connect with switch unit 05, for being electrically generated out-put supply according to third direct current
Sampled voltage；Logic control element 07 is connect with out-put supply sampling unit 06, for being generated according to out-put supply sampled voltage
Mode control signal and adjustment voltage；Opto-coupled feedback unit 08 is connect with filter unit 04 and control unit, for according to adjustment
Voltage generates feedback signal.
Wherein, Logic control module is specifically used for judging battery status according to out-put supply sampled voltage, and according to battery
State determines charge mode, and when charge mode is awakening mode, then the scheme control for exporting the first pulse width modulating signal is believed
Number and adjustment voltage；When charge mode be fast charge mode, then export high level mode control signal and adjustment voltage；Work as charging
Mode is end mode, then exports low level mode control signal.
Charge mode is determined according to battery status specifically, growing when charging less than the first preset duration, it is determined that charging
Mode is awakening mode；When out-put supply sampled voltage is located at the first pre-set interval, it is determined that charge mode is fast charge mode；
When out-put supply sampled voltage is greater than the first predeterminated voltage, it is determined that charge mode is end mode.
Third direct current is connected according to the mode control signal of high level in switch unit 05, according to low level scheme control
Signal turns off third direct current, realizes calling out for lithium battery charging according to the mode control signal of the first pulse width modulating signal
It wakes up.
When Logic control module is also used to grow about the second preset duration when charging, low level scheme control letter is exported
Number.The still underfill when lithium battery charging reaches the second preset duration, then terminate to charge, realize the encryption function of charging
Energy.
Logic control module is also used to export low level mould when out-put supply sampled voltage is less than the second predeterminated voltage
Formula controls signal.When out-put supply sampled voltage is less than the second predeterminated voltage, illustrates cell damage, therefore export low level mould
Formula controls signal to turn off the output of third direct current.
Logic control module is also used to export low level mould when out-put supply sampled voltage is greater than third predeterminated voltage
Formula controls signal.When out-put supply sampled voltage is greater than third predeterminated voltage, illustrates out-put supply over-voltage, therefore export low level
Mode control signal to turn off the output of third direct current.
As shown in Fig. 2, voltage conversion unit 03 is transformer T1, transformer T1 includes primary side inductance, auxiliary induction and pair
Side inductance；Secondary inductance exports crude sampling voltage；TCU transfer control unit 02 is specifically used for based on the feedback signal and crude sampling
Voltage generates changeover control signal.
The sampling of crude sampling voltage is carried out by secondary inductance, and feeds back to TCU transfer control unit 02 so that conversion and control
Unit 02 generates corresponding changeover control signal and the first direct current is converted to the second direct current, realizes the multiple of voltage conversion
Protection.
As shown in figure 3, lithium battery charging device further includes DC conversion unit 09.
It is connect with voltage conversion unit 03, for generating the first internal electric source, master reference electricity according to original internal power supply
The DC conversion unit 09 of stream, the first sampled voltage and first voltage.
Voltage conversion unit 03 is also used to that the first direct current is converted to original internal power supply according to changeover control signal.
As shown in figure 4, lithium battery charging device further includes adjustment current generating unit 10.
Adjust current generating unit 10 and logic control element 07, opto-coupled feedback unit 08, out-put supply sampling unit 06
And switch unit 05 connects, for generating adjustment electricity according to third direct current, master reference electric current and auxiliary base electric current
Stream；Logic control element 07 is also used to be generated according to the first internal electric source, the first sampled voltage and the second sampled voltage and assist
Reference current；Filter unit 04 is also used to be electrically generated second voltage and the second sampled voltage according to the second direct current；Opto-coupled feedback list
Member 08 is specifically used for generating feedback signal according to first voltage, second voltage, adjustment voltage and adjustment electric current.
Since adjustment current generating unit 10 is generated according to third direct current, master reference electric current and auxiliary base electric current
Adjust electric current；Therefore can be by controlling the output adjustment reference current of auxiliary base electric current, and then realize a variety of size of current
Charge mode.Logic control element 07 is generated according to the first internal electric source, the first sampled voltage and the second sampled voltage and is assisted
Reference current due to generating auxiliary base electric current by two sampled voltages, therefore improves the accurate of auxiliary base electric current generation
Degree improves the precision of lithium battery charging device charging current control.
As shown in figure 5, lithium battery charging device further includes amplifying unit 11 and indicating unit 12.
Amplifying unit 11 is connect with Logic control module, for being sampled and being amplified to third direct current to generate sampling
Amplify voltage；Indicating unit 12 is indicated according to indication signal；Logic control element 07 is also used to according to amplifier voltage
Generate indication signal.
By the way that third direct current is sampled and amplified, to determine charged state, and then charged state is indicated,
It is convenient for users to use.
As shown in fig. 6, lithium battery charging device further includes the first inhibition unit 13.
First inhibition unit 13 is connect with rectification unit 01, for inhibiting the electromagnetic interference of input AC electricity；Rectification unit
01 is specifically used for being electrically generated the first direct current according to the input AC after inhibition electromagnetic interference.
Inhibit unit 13 in the common mode interference of input terminal inhibition input AC electricity by first；Since input terminal is total to
Mould AF panel, so that the common-mode noise of power supply is inhibited, supply voltage is more stable.
As shown in fig. 7, lithium battery charging device further includes the second inhibition unit 14.
Second inhibition unit 14 is connect with switch unit 05, for inhibiting the electromagnetic interference of third direct current；Out-put supply
Sampling unit 06 is specifically used for being electrically generated out-put supply sampled voltage according to the third direct current after inhibition electromagnetic interference.
Inhibit unit 14 to carry out common mode interference to third direct current in output end by second to inhibit to generate output direct current
Electricity；Since output end has carried out common mode interference inhibition, so that the common-mode noise of power supply is inhibited, supply voltage is more steady
It is fixed.
As shown in figure 8, rectification unit 01 includes rectification module 011 and filter module 012.
Rectification module 011 is used to be electrically generated the 4th direct current according to input AC；Filter module 012 and rectification module 011
Connection, for being electrically generated the first direct current according to the 4th direct current.
The filtering that direct current is carried out while rectification ensure that and export to the first direct current of voltage conversion unit 03
Stability.
Fig. 9 shows the exemplary circuit structure of lithium battery charging device provided in an embodiment of the present invention for ease of description,
Only parts related to embodiments of the present invention are shown, and details are as follows:
Logic control element 07 includes microprocessor U1.
Switch unit 05 include the first field-effect tube M1, the second field-effect tube M2, first diode D1, first resistor R1,
Second resistance R2,3rd resistor R3 and the 4th resistance R4.
The source electrode of first field-effect tube M1 and the first end of first resistor R1 collectively form the first input of switch unit 05
End, the grid of the first field-effect tube M1 are connect with the first end of the second end of first resistor R1 and second resistance R2, first effect
Should the anode of drain electrode and first diode D1 of pipe M1 connect, the cathode of first diode D1 is the first of switch unit 05 to export
End, the second end of second resistance R2 are connect with the drain electrode of the second field-effect tube M2, grid and the third electricity of the second field-effect tube M2
Hinder the first end connection of R3, the second end of 3rd resistor R3 is the control terminal of switch unit 05, the first end of the 4th resistance R4 and
The source electrode of second field-effect tube M2 is connected to power ground altogether, and the second end of the 4th resistance R4 is the second output terminal of switch unit 05.
Adjusting current generating unit 10 includes first comparator U2, the second diode D2, first capacitor C1, the second capacitor
C2, the 5th resistance R5 and the 6th resistance R6.
The normal phase input end of first comparator U2 is the reference current input terminal for adjusting current generating unit 10, and first compares
The first end of the first end of the negative-phase input of device U2 and the 6th resistance R6, the first end of the second capacitor C2 and the 5th resistance R5
Connection, the second end of the 6th resistance R6 are the sample rate current input terminal for adjusting current generating unit 10, and first comparator U2's is defeated
Outlet is connect with the first end of the cathode of the second diode D2 and first capacitor C1, the second end of first capacitor C1 and the 5th resistance
The second end of R5 connects, the adjustment current output terminal for just extremely adjusting current generating unit 10 of the second diode D2, the second electricity
The second end for holding C2 is connect with power ground.
Amplifying unit 11 includes the second comparator U3, third capacitor C3, the 7th resistance R7, the 8th resistance R8, the 9th resistance
R9 and the tenth resistance R10.
The normal phase input end of second comparator U3 and the first end of the tenth resistance R10 and the first end of third capacitor C3 connect
It connects, the second end of the tenth resistance R10 is the sampling end of amplifying unit 11, the negative-phase input and the 8th resistance of the second comparator U3
The first end of R8 is connected with the first end of the 9th resistance R9, the output end of the second comparator U3 and the second end of the 8th resistance R8 and
The first end of 7th resistance R7 connects, and the second end of the 7th resistance R7 is the output end of amplifying unit 11, and the of the 9th resistance R9
The second end of two ends and third capacitor C3 are connected to power ground altogether.
Out-put supply sampling unit 06 includes the tenth resistance R10, eleventh resistor R11 and the 4th capacitor C4.
The first end of tenth resistance R10 be out-put supply sampling unit 06 input terminal, the second end of the tenth resistance R10,
The first end of eleventh resistor R11 and the first end of the 4th capacitor C4 are the output end of out-put supply sampling unit 06, the tenth
The second end of one resistance R11 and the second end of the 4th capacitor C4 are connected to power ground altogether.
Second inhibits unit 14 to include common mode choke coil LF1.
Indicating unit 12 includes the first Light-emitting diode LED 1 and the second Light-emitting diode LED 2.
It is described further below in conjunction with working principle to shown in Fig. 9:
Tenth resistance R10 and eleventh resistor R11 divides to generate out-put supply sampled voltage, micro- place third direct current
It manages device U1 and battery status is judged according to out-put supply sampled voltage, and charge mode is determined according to battery status, work as charge mode
For awakening mode, then the mode control signal and adjustment voltage of the first pulse width modulating signal are exported；When charge mode is fast
Mold filling formula then exports the mode control signal and adjustment voltage of high level；When charge mode be end mode, then export low level
Mode control signal.
When charge mode is fast charge mode, microprocessor U1 exports auxiliary base electric current simultaneously, and first comparator U2 is by the
Three direct currents and auxiliary base electric current and master reference electric current and compared with, output adjustment electric current；
When charge mode be awakening mode, first comparator U2 by third direct current with master reference electric current and compared with
Compared with output adjustment electric current；
Opto-coupled feedback unit 08 generates feedback signal according to adjustment voltage and adjustment electric current, and TCU transfer control unit 02 is according to anti-
Feedback signal generates changeover control signal；First direct current is converted to second directly according to changeover control signal by voltage conversion unit 03
Galvanic electricity；Filter unit 04 is electrically generated third direct current according to the second direct current；First field-effect tube M1 and the second field-effect tube M2 root
Third direct current is connected to or turned off according to mode control signal.
Meanwhile second comparator U3 third direct current is sampled and is amplified to generate amplifier voltage, and input
To microprocessor U1, microprocessor U1 determines charged state according to amplifier voltage, and is generated accordingly according to charged state
Indication signal is to be indicated.
The embodiment of the present invention also provides a kind of charger, which includes such as above-mentioned lithium battery charging device.
The embodiment of the present invention is electrically generated out-put supply sampled voltage according to third direct current by out-put supply sampling unit；It patrols
Volume control unit according to out-put supply sampled voltage generate mode control signal switch unit be connected to according to mode control signal or
Third direct current is turned off to charge to lithium battery；Due to Logic control module can export including high level, low level and
The mode control signal of first pulse width modulating signal；To which lithium battery charging can be in the different stages with different voltage
It charges, it is therefore prevented that aging of lithium battery increases the competitiveness of product in market to improve the service life of lithium battery.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of lithium battery charging device, which is characterized in that lithium battery charging device includes:
For being electrically generated the rectification unit of the first direct current according to input AC；
It is connect with the rectification unit, for generating the TCU transfer control unit of changeover control signal based on the feedback signal；
It is connect with the rectification unit and the shift control module, for straight by described first according to the changeover control signal
Galvanic electricity is converted to the voltage conversion unit of the second direct current；
It is connect with the voltage conversion unit, for being electrically generated the filter unit of third direct current according to second direct current；
It is connect with the filter unit, for being connected to or turning off the switch list of the third direct current according to mode control signal
Member；The mode control signal includes high level, low level and the first pulse width modulating signal；
It is connect with the switch unit, the out-put supply for being electrically generated out-put supply sampled voltage according to the third direct current is adopted
Sample unit；
It connect with the out-put supply sampling unit, believes for generating the scheme control according to the out-put supply sampled voltage
Number and adjustment voltage logic control element；
It is connect with the filter unit and described control unit, for generating the light of the feedback signal according to the adjustment voltage
Coupling feedback unit.
2. lithium battery charging device as described in claim 1, which is characterized in that the voltage conversion unit is transformer, institute
Stating transformer includes primary side inductance, auxiliary induction and secondary inductance；
The secondary inductance exports crude sampling voltage；
The logic control element is specifically used for generating changeover control signal with the crude sampling voltage based on the feedback signal.
3. lithium battery charging device as described in claim 1, which is characterized in that further include:
Connect with the voltage conversion unit, for according to original internal power supply generate the first internal electric source, master reference electric current,
The DC conversion unit of first sampled voltage and first voltage；
The voltage conversion unit is also used to that first direct current is converted to original internal according to the changeover control signal
Power supply.
4. lithium battery charging device as claimed in claim 3, which is characterized in that further include:
With the logic control element, the opto-coupled feedback unit, the out-put supply sampling unit and the switch unit
Connection, for generating the tune of adjustment electric current according to the third direct current, the master reference electric current and auxiliary base electric current
Whole current generating unit；
The logic control element is also used to according to first internal electric source, first sampled voltage and the second sampling electricity
Pressure generates the auxiliary base electric current；
The filter unit is also used to be electrically generated second voltage and second sampled voltage according to second direct current；
The opto-coupled feedback unit is specifically used for according to the first voltage, the second voltage, the adjustment voltage and described
It adjusts electric current and generates the feedback signal.
5. lithium battery charging device as described in claim 1, which is characterized in that further include:
It is connect with the Logic control module, for being sampled and being amplified to the third direct current to generate amplifier electricity
The amplifying unit of pressure；
According to the indicative indicating unit of indication signal；
The logic control element is also used to generate indication signal according to the amplifier voltage.
6. lithium battery charging device as described in claim 1, which is characterized in that further include:
It is connect with the rectification unit, for inhibiting the first of electromagnetic interference of the input AC electricity to inhibit unit；
The rectification unit is specifically used for being electrically generated first direct current according to the input AC after inhibition electromagnetic interference.
7. lithium battery charging device as described in claim 1, which is characterized in that further include:
It is connect with the switch unit, for inhibiting the second of electromagnetic interference of the third direct current to inhibit unit；
The out-put supply sampling unit is specifically used for being electrically generated output electricity according to the third direct current after inhibition electromagnetic interference
Source sampling voltage.
8. lithium battery charging device as described in claim 1, which is characterized in that the rectification unit includes:
For being electrically generated the rectification module of the 4th direct current according to the input AC；
It is connect with the rectification module, for being electrically generated the filter module of first direct current according to the 4th direct current.
9. lithium battery charging device as described in claim 1, which is characterized in that the switch unit includes the first field-effect
Pipe, the second field-effect tube, first diode, first resistor, second resistance, 3rd resistor and the 4th resistance；
It is first defeated to collectively form the switch unit for the source electrode of first field-effect tube and the first end of the first resistor
Entering end, the grid of first field-effect tube is connect with the first end of the second end of the first resistor and the second resistance,
The drain electrode of first field-effect tube is connect with the anode of the first diode, and the cathode of the first diode is described opens
The first output end of unit is closed, the second end of the second resistance is connect with the drain electrode of second field-effect tube, and described second
The grid of field-effect tube is connect with the first end of the 3rd resistor, and the second end of the 3rd resistor is the switch unit
Control terminal, the first end of the 4th resistance and the source electrode of second field-effect tube are connected to power ground, the 4th resistance altogether
Second end be the switch unit second output terminal.
10. a kind of charger, which is characterized in that including lithium battery charging device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553180.0A CN110212623A (en) | 2018-12-19 | 2018-12-19 | A kind of lithium battery charging device and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553180.0A CN110212623A (en) | 2018-12-19 | 2018-12-19 | A kind of lithium battery charging device and charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110212623A true CN110212623A (en) | 2019-09-06 |
Family
ID=67780074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811553180.0A Pending CN110212623A (en) | 2018-12-19 | 2018-12-19 | A kind of lithium battery charging device and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110212623A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824166A (en) * | 2020-06-19 | 2021-12-21 | 北京小米移动软件有限公司 | Charging strategy adjusting method and device and storage medium |
-
2018
- 2018-12-19 CN CN201811553180.0A patent/CN110212623A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824166A (en) * | 2020-06-19 | 2021-12-21 | 北京小米移动软件有限公司 | Charging strategy adjusting method and device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203387219U (en) | Electronic cigarette high-efficiency charging device | |
| CN115208305B (en) | Stable photovoltaic power generation intelligent power supply system | |
| CN202145619U (en) | Bidirectional DC/DC converter | |
| CN102611168B (en) | Simple and high-efficient charging and discharging control circuit and control method thereof | |
| CN105720646A (en) | Charging current-limiting circuit for communication base station reserve power supply | |
| CN204906189U (en) | Low pressure high frequency switching power supply circuit | |
| CN110212623A (en) | A kind of lithium battery charging device and charger | |
| CN104935033A (en) | Storage battery formation processing and charging/discharging circuit and control method thereof | |
| CN104426220A (en) | Voltage regulation circuit | |
| CN209233542U (en) | A kind of lithium battery charging device and charger | |
| CN204103577U (en) | Online integrated switch mode constant current charger | |
| CN203574435U (en) | Charger control circuit | |
| CN204131199U (en) | A kind of control circuit of battery charger | |
| CN201656537U (en) | Accumulator charger | |
| CN204633351U (en) | A kind of high multiplying power lithium ion car emergency power balancing charging system | |
| CN208299693U (en) | A kind of Switching Power Supply of full bridge structure | |
| CN209217735U (en) | Charger output voltage auto-adjusting circuit | |
| TW201914184A (en) | Power device with an isolated high boost converter and a balance modules for serially connected batteries | |
| CN208986675U (en) | UPS device | |
| CN208754020U (en) | The pressure difference of charge relay adjusts circuit | |
| CN103779839A (en) | Automatic opening type starting circuit powered up by rechargeable battery | |
| CN202586476U (en) | Hand-operated multi-functional mobile phone charging circuit | |
| CN212723158U (en) | Constant current and constant voltage detection circuit based on MOS internal resistance | |
| CN203554042U (en) | Power transformer | |
| CN117220494B (en) | Adjusting circuit for single-stage PFC (power factor correction) applied to quick-charging product and quick-charging product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |