CN107069888A - A kind of charging circuit and mobile terminal - Google Patents
A kind of charging circuit and mobile terminal Download PDFInfo
- Publication number
- CN107069888A CN107069888A CN201710362703.2A CN201710362703A CN107069888A CN 107069888 A CN107069888 A CN 107069888A CN 201710362703 A CN201710362703 A CN 201710362703A CN 107069888 A CN107069888 A CN 107069888A
- Authority
- CN
- China
- Prior art keywords
- voltage
- switch
- charger
- control
- charging
- 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.)
- Granted
Links
- 238000007600 charging Methods 0.000 title claims abstract description 127
- 238000005070 sampling Methods 0.000 claims abstract description 120
- 238000004891 communication Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 13
- 230000005669 field effect Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H02J7/0077—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of charging circuit and mobile terminal, and the charging circuit includes：Series battery, the series battery includes at least two batteries, and the minus earth of the series battery, the anode of the series battery and the output end of charger are connected；Control unit, first sampling end of described control unit is connected with second end of the series battery, first control end of described control unit and the control end of charger are connected, described control unit is used for the charging voltage that the series battery is gathered by first sampling end, and first voltage control signal is generated according to the charging voltage, the first voltage control signal is transmitted to the charger by first control end, the first voltage control signal is used for the output voltage for controlling the charger.So, the embodiment of the present invention carries out high-voltage charging to series battery, improves charging rate by the way that battery series connection is obtained into series battery.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of charging circuit and mobile terminal.
Background technology
The mode directly charged extensively using low pressure on current mobile terminal is charged, and existing low pressure directly charges
Mode requires very high to path resistance, it can be seen from power attenuation P=I*I*R, it is assumed that electric current is doubled, if wanting to ensure
Power attenuation is constant, then path resistance needs to be reduced to original a quarter, and path resistance can not be greatly lowered in prior art
It is anti-, it is impossible to improve charging rate by improving charging current, cause the charging rate of existing low pressure charging modes slow.It can be seen that,
There is the problem of charging rate is slow in the existing direct charging modes of low pressure.
The content of the invention
The embodiment of the present invention provides a kind of charging circuit and mobile terminal, is deposited with solving the direct charging modes of existing low pressure
The problem of charging rate is slow.
In a first aspect, the embodiments of the invention provide a kind of charging circuit, including：
Series battery, the series battery include at least two batteries, the minus earth of the series battery,
The anode of the series battery and the output end of charger are connected；
Control unit, the first sampling end of described control unit is connected with second end of the series battery, institute
State the first control end of control unit and the control end of charger is connected, described control unit is used to sample by described first
The charging voltage of the end collection series battery, and first voltage control signal is generated according to the charging voltage, pass through institute
State the first control end and transmit the first voltage control signal to the charger, the first voltage control signal is used to control
Make the output voltage of the charger.
Second aspect, the embodiment of the present invention also provides a kind of mobile terminal, and the mobile terminal includes charging circuit, institute
Stating charging circuit includes：
Series battery, the series battery include at least two batteries, the minus earth of the series battery,
The anode of the series battery and the output end of charger are connected；
Control unit, the first sampling end of described control unit is connected with second end of the series battery, institute
State the first control end of control unit and the control end of charger is connected, described control unit is used to sample by described first
The charging voltage of the end collection series battery, and first voltage control signal is generated according to the charging voltage, pass through institute
State the first control end and transmit the first voltage control signal to the charger, the first voltage control signal is used to control
Make the output voltage of the charger.
So, in the embodiment of the present invention, by the way that the series connection of at least two batteries obtained into series battery, charger it is defeated
Go out end to be connected with series battery, control unit is connected with the control end of charger respectively, and charger is controlled by control unit
Output HIGH voltage improves charging rate to series battery charge.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is a kind of structure chart of charging circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention；
Fig. 5 is an a kind of structure chart of the pressure unit of charging circuit provided in an embodiment of the present invention；
Fig. 6 is the structure chart for the mobile terminal that the present invention implements offer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Referring to Fig. 1, Fig. 1 is a kind of structure chart of charging current provided in an embodiment of the present invention, as shown in figure 1, charging electricity
Road 100 includes：
Series battery 101, the series battery 101 includes at least two batteries, the series battery 101
Minus earth, the anode of the series battery 101 is connected with the output end of charger 103；
Control unit 102, the first sampling end of described control unit 102 and described the second of the series battery 101
End connection, the first control end of described control unit 102 is connected with the control end of charger 103, and described control unit 102 is used
In the charging voltage that the series battery 101 is gathered by first sampling end, and according to charging voltage generation the
One voltage control signal, the first voltage control signal, institute are transmitted by first control end to the charger 103
State the output voltage that first voltage control signal is used to control the charger.
In the present embodiment, series battery 101 includes the first battery 1011 and the second battery 1012, the first battery 1011
Anode be connected with the first sampling end of control unit 102, the anode series of the negative electrode of the first battery 1011 and the second battery 1012
Connection, the minus earth of the second battery 1012.It is understood that after battery is connected, the voltage of series battery is all strings
Join the voltage summation of battery.For example, the first battery 1011 is 3.7 volts, and the second battery 1012 is 3.7 volts, when electric by first
After the battery 1012 of pond 1011 and second is connected, obtained total voltage is 7.4 volts.
In the present embodiment, the first sampling end of described control unit 102 can be the analog-to-digital conversion port of chip, pass through
Analog-to-digital conversion port directly gathers the voltage of series battery.The charging electricity of the first sampling end collection of described control unit 102
Pressure is the current charging voltage of series battery, and the current charging voltage is likely less than the total voltage of series battery, if currently
Charging voltage is less than the total voltage of series battery, calculates the total voltage of series battery and the difference of current charging voltage, root
First voltage control signal is generated according to the difference calculated, is transmitted by first control end to the charger 103 described
First voltage control signal, the first voltage control signal is used for the output voltage for controlling the charger.
Supplementary notes, charger 103 is after first voltage control signal is received, according to first voltage control signal
Adjust output voltage so that the charging voltage of input series battery is equal to the total voltage of series battery 101.
So, in the embodiment of the present invention, by the way that the series connection of at least two batteries is obtained into series battery 101, charger
103 output end is connected with series battery 101, and control end of the control unit 102 respectively with charger 103 is connected, and passes through control
The control charger output HIGH voltage of unit 102 processed improves charging rate to series battery charge.
Referring to Fig. 2, Fig. 2 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention, as shown in Fig. 2 filling
Circuit 200 includes：
Series battery 201, the series battery 201 includes at least two batteries, the series battery 201
Minus earth；
Sampling resistor 203, the first end of the sampling resistor 203 is connected with the anode of the series battery 201, institute
The first end for stating sampling resistor 203 is also connected with the first sampling end of described control unit 202, and the of the sampling resistor 203
Two ends are connected with the output end of the charger 205, the second end of the sampling resistor 203 also with described control unit 202
Second sampling end is connected；
Described control unit 202, for the first end by first sampling end collection sampling resistor 203
Voltage, the voltage at the second end of the sampling resistor 203 is gathered by second sampling end, according to the sampling resistor 203
First end voltage and the sampling resistor 203 the second end voltage determine the series battery 201 charging electricity
Stream, calculates the current differential between the charging current and preset charged electric current of the series battery, and according to the difference between current
Value the first current controling signal of generation, first current control is transmitted by first control end to the charger 205
Signal, first current controling signal is used for the output current for controlling the charger 205.
In the present embodiment, series battery 201 includes the first battery 2011 and the second battery 2012, the first battery 2011
Anode be connected with the first end of sampling resistor 203, the negative electrode of the first battery 2011 is connected with the anode of the second battery 2012,
The minus earth of second battery 2012.
In the present embodiment, if the charging current of series battery be 760 milliamperes, preset charged electric current be 800 milliamperes
When, the difference for calculating charging current and preset charged electric current is 40 milliamperes, and the first current control letter is generated according to current differential
Number, first current controling signal is transmitted to the charger 205 by first control end.Charger 205 is received
After first current controling signal, output current is improved 40 milliamperes so that the charging current of input series battery is 800 millis
Peace, reaches preset charged electric current, it is ensured that charging current is consistent with preset charged size of current.
Optionally, in the present embodiment, the output end of the 3rd sampling end of described control unit 202 and the charger
Connection.Described control unit 202, is additionally operable to gather the current output electricity of the charger 205 by the 3rd sampling end
Pressure, the voltage of the first end of the sampling resistor 203 is defined as the charging voltage of the series battery 201, calculates described
Voltage difference between the charging voltage and preset charge voltage of series battery 201, by the voltage difference and the charging
The current output voltage of device 205 is added, and obtains voltage parameter to be output, according to the electricity of voltage parameter generation second to be output
Control signal is pressed, the second voltage control signal is transmitted to the charger 205 by first control end, described the
Two voltage control signals are used for the output voltage for controlling the charger 205.
For example, if the charging voltage of series battery be 7.2 volts, preset charge voltage be 7.4 volts, the charging
When the current output voltage of device 205 is 7.6 volts, the difference for calculating charging voltage and preset charge voltage is 0.2 volt, by institute
The current output voltage that voltage difference is stated with the charger 205 is added, and voltage parameter to be output is obtained for 7.8 volts, according to institute
Voltage parameter generation second voltage control signal to be output is stated, institute is transmitted to the charger 205 by first control end
Second voltage control signal is stated, the second voltage control signal is used for the output voltage for controlling the charger 205.Charging
Device 205 is received after second voltage control signal, and output voltage is improved into 0.2 volt so that the charging electricity of input series battery
Press as 7.4 volts, reach preset charge voltage, it is ensured that charging voltage is in the same size with preset charge voltage.
So, in the embodiment of the present invention, by the way that the series connection of at least two batteries is obtained into series battery 201, series-connected cell
Group 201 is connected with sampling resistor 203, and the first sampling end of control unit 202 is connected with the first end of sampling resistor 203, control
Second sampling end of unit 202 and the second end of sampling resistor are connected, the 3rd sampling end and the charger 205 of control unit 202
Output end connection, the first control end of control unit 202 is connected with the control end of charger 205, the output of charger 205
End is connected with the second end of sampling resistor 203, and charger output HIGH voltage is controlled to series battery by control unit 202
201 chargings, adjust the output voltage and output current of charger, it is ensured that the charging voltage and charging current of series battery reach
To default value, it is to avoid occur the situation of partial pressure and shunting in circuit to the charging current of rechargeable battery set and charging voltage
Influence, improves charging rate.
Referring to Fig. 3, Fig. 3 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention, as shown in figure 3, filling
Circuit 300 includes：
Series battery 301, the series battery 301 includes at least two batteries, the series battery 301
Minus earth；
Sampling resistor 303, the first end of the sampling resistor 303 is connected with the anode of the series battery 301, institute
The first end for stating sampling resistor 303 is also connected with the first sampling end of described control unit 302, and the second of the sampling resistor
End is also connected with the second sampling end of described control unit 302；
Switch element 304, the first end of the switch element 304 is connected with the second end of the sampling resistor 303, institute
The second end for stating switch element 304 is connected with the output end of the charger 305, the 3rd end of the switch element 304 and institute
State the second control end connection of control unit 302；
Described control unit 302, is additionally operable to by second control end to the input switch control of switch element 304
Signal processed, the switch controlling signal is used for the closed and disconnected state for controlling the switch element.
In the present embodiment, series battery 301 includes the first battery 3011 and the second battery 3012, the first battery 3011
Anode be connected with the first end of sampling resistor 303, the negative electrode of the first battery 3011 is connected with the anode of the second battery 3012,
The minus earth of second battery 3012.
In the present embodiment, described control unit 302 is additionally operable to gather the sampling resistor by first sampling end
The voltage of 303 first end, the voltage at the second end of the sampling resistor 303 is gathered by second sampling end, according to institute
The voltage for stating the voltage of the first end of sampling resistor 303 and the second end of the sampling resistor 303 determines the series battery
301 charging current, calculates the current differential between the charging current and preset charged electric current of the series battery 301, and
First current controling signal is generated according to the current differential, institute is transmitted to the charger 305 by first control end
The first current controling signal is stated, first current controling signal is used for the output current for controlling the charger 305.
Described control unit 302, is additionally operable to gather the current output of the charger 305 by the 3rd sampling end
Voltage, the voltage of the first end of the sampling resistor 303 is defined as the charging voltage of the series battery 301, calculates institute
The voltage difference between the charging voltage and preset charge voltage of series battery 301 is stated, the voltage difference is filled with described
The current output voltage of electrical equipment 305 is added, and obtains voltage parameter to be output, according to the voltage parameter generation second to be output
Voltage control signal, the second voltage control signal is transmitted by first control end to the charger 305, described
Second voltage control signal is used for the output voltage for controlling the charger 305.
It is understood that can remove the sampling resistor 303 in Fig. 3, the first end of switch element 304 can be straight
Connect and be connected with the anode of series battery 301, charger is controlled to series connection by the closure and port status of switch element 304
Battery pack is charged or stops charging.
In the present embodiment, switch element 304 at least includes a triode or at least includes a metal oxide field
Effect pipe.
In the present embodiment, switch element 304 includes two MOS type FETs, is the respectively
One MOS type FET Q1 and the second MOS type FET Q2, wherein, described
One MOS type FET Q1 drain electrode is the first end of the switch element 304, with the sampling resistor
303 the second end connection, source electrode and second metal of the first MOS type FET Q1 are aoxidized
Thing semiconductor field effect pipe Q2 source electrode is connected, and the drain electrode of the second MOS type FET Q2 is
Second end of the switch element 304, is connected with the input of the charger 305, first metal-oxide semiconductor (MOS)
Type FET Q1 grid and the second MOS type FET Q2 grid are the switch element
304 the 3rd end, is connected with the second control end of described control unit 302.
In the present embodiment, control unit 302 is imitated by the second control end to first MOS type
Should pipe Q1 grid and the gate input control signal of the second MOS type FET Q2, control institute
State leading for the first MOS type FET Q1 and the second MOS type FET Q2
Logical and closure state, by controlling the first MOS type FET Q1 and second metal to aoxidize
Thing semiconductor field effect pipe Q2 is simultaneously turned on so that switch element 304 enters closure state, by controlling first gold medal
Belong to oxide semiconductor-type FET Q1 and control in the second MOS type FET Q2 at least
It is individual to be off so that switch element 304 enters off-state.
So, in the embodiment of the present invention, by the way that the series connection of at least two batteries is obtained into series battery 301, series-connected cell
Group 301 is connected with the first end of sampling resistor 303, and the second end of sampling resistor 303 is connected with the first end of switch element 304,
Second end of switch element 304 is connected with the output end of charger 305, the first sampling end and sampling resistor of control unit 302
303 first end connection, the second sampling end of control unit 302 is connected with the second end of sampling resistor 303, control unit 302
The 3rd sampling end and the output end of charger connect, the first control end of control unit 302 and the control end of charger 305
Connection, controls charger output HIGH voltage to series battery charge, adjusts the output electricity of charger by control unit 302
Pressure and output current, it is ensured that the charging voltage and charging current of series battery reach default value, it is to avoid the partial pressure of circuit and
The influence to the charging current and charging voltage of rechargeable battery set is shunted, passes through the closure of the controlling switch unit of control unit 302
And off-state, it can control whether to charge to series battery, while charging rate is improved, it is ensured that can accurately control
Make the opportunity of charging.
Fig. 4 is a kind of another structure chart of charging circuit provided in an embodiment of the present invention, as shown in figure 4, charging circuit
400 include：
Series battery 401, the series battery 401 includes at least two batteries, the series battery 401
Minus earth；
Described control unit 402 includes control chip 4021 and processor 4022；
The first end of the control chip 4021 is the first sampling end of described control unit 402, the control chip
4021 the second end is the second sampling end of described control unit 402, and the 3rd end of the control chip 4021 is the control
3rd sampling end of unit 402；
Sampling resistor 403, the first end of the sampling resistor 403 is connected with the anode of the series battery 401, institute
State first end of the first end of sampling resistor 403 also with the control chip 4021 to be connected, the second of the sampling resistor 403
The second end also with the control chip 4021 is held to be connected；
Switch element 404, the first end of the switch element 404 is connected with the second end of the sampling resistor 403, institute
The second end for stating switch element 404 is connected with the output end of the charger 405, the 3rd end of the switch element 404 and institute
The first control end connection of control chip 4021 is stated, wherein the first control end of the control chip 4021 is single for the control
Second control end of member；
First end and the output end of the control chip first connection of the processor 4022；
Described control unit 402 also include communication protocol chip 4023, the first end of the communication protocol chip 4023 with
The second end connection of the processor 4022, the second end of the communication protocol chip 4023 is the of described control unit 402
One control end, is connected with the control end of the charger 405；
The control chip 4021, the voltage for gathering the first end of sampling resistor 403 by the first sampling end, by institute
The voltage for stating the first end of sampling resistor 403 is defined as the charging voltage of series battery 401；
The control chip 4021, it is described for the charging voltage of the series battery 401 collected to be transferred to
Processor 4022；
The processor 4022, the charging voltage generation charging of the series battery 401 for being collected according to please
Signal is sought, and the charge request signal is transferred to the communication protocol chip 4023；
The communication protocol chip 4023, for transmitting described fill to the charger 405 by first control end
Electric request signal, to ask the charger output charging signals.
In the present embodiment, the charge request signal includes charging voltage parameter, charging current parameter, the charging
Voltage parameter is used to determine that the output voltage of the charger, the charging current parameter are used for the output for determining charged device
Electric current, charger 405 is according to charge request signal output voltage and electric current.
In the present embodiment, series battery 401 includes the first battery 4011 and the second battery 4012, the first battery 4011
Anode be connected with the first end of sampling resistor 403, the negative electrode of the first battery 4011 is connected with the anode of the second battery 3012,
The minus earth of second battery 3012.
In the present embodiment, switch element 404 includes the first MOS type FET Q1 and the second metal
Oxide semiconductor-type FET Q2.It should be noted that the switch list shown in the concrete structure and Fig. 3 of switch element 404
The concrete structure of member 304 is identical, will not be described here.
Supplementary notes, the control chip 4021 is additionally operable to gather the sampling electricity by second sampling end
The voltage at the second end of resistance 403, the processor 4022, voltage and institute for the first end according to the sampling resistor 403
The voltage for stating the second end of sampling resistor 403 determines the charging current of the series battery 401, calculates the series-connected cell
Current differential between the charging current and preset charged electric current of group 401, and the first electric current control is generated according to the current differential
Signal processed, first current controling signal, first electricity are transmitted by first control end to the charger 405
Flow control signals are used for the output current for controlling the charger 405.
Further remark additionally, the 3rd sampling end of described control unit 402 and the output of the charger 405
End connection.The control chip 4021, is additionally operable to gather the current output of the charger 205 by the 3rd sampling end
Voltage, the voltage of the first end of the sampling resistor 403 is defined as the charging voltage of the series battery 201, calculates institute
The voltage difference between the charging voltage and preset charge voltage of series battery 401 is stated, the voltage difference is filled with described
The current output voltage of electrical equipment 405 is added, and obtains voltage parameter to be output, according to the voltage parameter generation second to be output
Voltage control signal, the second voltage control signal is transmitted by first control end to the charger 405, described
Second voltage control signal is used for the output voltage for controlling the charger 405.
In the present embodiment, charging circuit 400 also includes：
Pressure unit 406, the input of the pressure unit 406 is connected with the second end of the series battery 401；
PMU 407, the first end of the PMU 407 and the output end of the pressure unit 406
Connection, the second end of the PMU 407 is connected with the power input of the processor 4022；
The pressure unit 406, the voltage for being inputted to the series battery 401 carries out decompression processing, is dropped
Piezoelectricity pressure；
The PMU 407, for the step-down voltage to be exported to the power input of the processor 4022
End, powers to the processor 4022.
For example, pressure unit includes half voltage-controlled system and pio chip, and half voltage-controlled system can include electricity with pio chip
Lotus pump bracket structure.
In the present embodiment, the total voltage of series battery 401 is the voltage sum of multiple batteries, in discharge process,
The voltage exported by increasing pressure unit to series battery is depressured, and the cell voltage after series connection is reduced into shifting
The supply voltage of dynamic terminal, it is achieved thereby that high pressure directly charges, the purpose of step-down discharge.
Referring to Fig. 5, Fig. 5 is an a kind of structure chart of the pressure unit of charging current provided in an embodiment of the present invention, is such as schemed
Shown in 5, pressure unit 500 includes：
Two electric capacity and four switches, described two electric capacity are respectively the first electric capacity C1 and the second electric capacity C2, described four
Switch is respectively first switch S1, second switch S2, the 3rd switch S3, the 4th switch S4；
The positive pole of the first electric capacity C1 is connected with first switch S1 first end, the negative pole of the first electric capacity C1 with
Second switch S2 first end connection, the positive pole of the first electric capacity C1 is connected with the 3rd switch S3 first end, and described first
Electric capacity C1 negative pole is connected with the 4th switch S4 first end；
The positive pole of the second electric capacity C2 is connected with the described 3rd switch S3 the second end, and the second electric capacity C2's is negative
Pole is connected with the described 4th switch S4 the second end, the negative pole ground connection of the second electric capacity C2, and the second of the 4th switch S4
End ground connection；
The first end of the first switch S1 is the input of the pressure unit 500, and second switch S2 first end is
The output end of the pressure unit 500, the output end of the just extremely described pressure unit 500 of the second electric capacity C2；
Oscillator 501, for producing first phase, the first switch S1 and second is controlled by the first phase
S2 closures are switched, controls the 3rd switch S3 and the 4th switch S4 to disconnect, the first electric capacity C1 and the second electric capacity C2 is filled
Electricity, produces second phase, controls the first switch S1 and second switch S2 to disconnect by the second phase, and control is described
3rd switch S3 and the 4th switch S4 closures so that the first electric capacity C1 and the second electric capacity C2 voltage are equal.
As an example it is assumed that the voltage at each electric capacity two ends keeps constant in whole work process, in first phase,
S1 and S2 closures, S3 and S4 disconnect, and draw：The voltage at the first electric capacity two ends is equal to input plus the voltage at the second electric capacity two ends
Terminal voltage, in second phase, S1 and S2 disconnect, S3 and S4 closures, draw：The voltage at the first electric capacity two ends is equal to the second electric capacity
The voltage at two ends, it is assumed that keep certain switch periods and speed, in the case that the holding of electric capacity both end voltage is constant, finally may be used
To derive：Output end voltage is equal to the voltage at the first electric capacity two ends, and equal to the voltage at the second electric capacity two ends, and equal to defeated
Enter the half of terminal voltage, i.e., it is just the half of input voltage finally to realize output voltage.
So, the voltage that the present embodiment is exported by pressure unit 500 to series battery is depressured, so as to realize
By purpose of the high voltage power supply decompression of input for low-tension supply.
Referring to Fig. 6, Fig. 6 is the structure chart for the mobile terminal that the present invention implements offer, as shown in fig. 6, mobile terminal
600 include radio frequency (Radio Frequency, RF) circuit 610, memory 620, input block 630, display unit 640, place
Manage device 650, voicefrequency circuit 660, communication module 670, power supply 680 and charging circuit 690.
Wherein, charging circuit 690, including：Series battery, the series battery includes at least two batteries, described
The minus earth of series battery, the anode of the series battery and the output end of charger are connected；
Control unit, the first sampling end of described control unit is connected with second end of the series battery, institute
State the first control end of control unit and the control end of charger is connected, described control unit is used to sample by described first
The charging voltage of the end collection series battery, and first voltage control signal is generated according to the charging voltage, pass through institute
State the first control end and transmit the first voltage control signal to the charger, the first voltage control signal is used to control
Make the output voltage of the charger.
Optionally, charging circuit 690 also includes：
Sampling resistor, the first end of the sampling resistor is connected with the anode of the series battery, the sampling resistor
First end be also connected with the first sampling end of described control unit, the second end of the sampling resistor and the charger
Output end is connected, and the second end of the sampling resistor is also connected with the second sampling end of described control unit；
Described control unit, is additionally operable to gather the voltage of the first end of the sampling resistor by first sampling end,
The voltage at the second end of the sampling resistor is gathered by second sampling end, according to the first end of the sampling resistor
The voltage at the second end of voltage and the sampling resistor determines the charging current of the series battery, calculates the series electrical
Current differential between the charging current and preset charged electric current of pond group, and the first electric current control is generated according to the current differential
Signal processed, first current controling signal, the first electric current control are transmitted by first control end to the charger
Signal processed is used for the output current for controlling the charger.
Optionally, the 3rd sampling end of described control unit is connected with the output end of the charger；
Described control unit, is additionally operable to gather the current output voltage of the charger by the 3rd sampling end, will
The voltage of the first end of the sampling resistor is defined as the charging voltage of the series battery, calculates the series battery
Charging voltage and preset charge voltage between voltage difference, by the current output of the voltage difference and the charger
Voltage is added, and obtains voltage parameter to be output, is generated second voltage control signal according to the voltage parameter to be output, is passed through
First control end transmits the second voltage control signal to the charger, and the second voltage control signal is used for
Control the output voltage of the charger.
Optionally, the charging circuit 690 also includes：
Switch element, the first end of the switch element is connected with the second end of the sampling resistor, the switch element
The second end be connected with the output end of the charger, the second control of the 3rd end of the switch element and described control unit
End connection processed；
Described control unit, is additionally operable to by second control end to the switch element input switch control signal,
The switch controlling signal is used for the closed and disconnected state for controlling the switch element.
Optionally, the switch element includes at least one triode, or is partly led including at least one metal oxide
Build FET.
Optionally, first transport module is audio decoder module；Second transport module is USB
USB module.
Optionally, the switch element includes the first MOS type FET and the second metal is aoxidized
Thing semiconductor field effect pipe, wherein, the drain electrode of the first MOS type FET is single for the switch
The first end of member, is connected, the source of the first MOS type FET with the second end of the sampling resistor
Pole is connected with the source electrode of the second MOS type FET, second MOS type
The drain electrode of FET is the second end of the switch element, is connected with the input of the charger, first metal oxygen
The grid of the grid of compound semiconductor field effect pipe and the second MOS type FET is opened to be described
The 3rd end of unit is closed, is connected with the second control end of the unit processed.
Optionally, described control unit includes processor and control chip communication protocol chip, the first of the processor
End and control chip first end connection；
Described control unit also includes communication protocol chip, first end and the processor of the communication protocol chip
The connection of the second end, the second end of the communication protocol chip is the first control end of described control unit, with the charger
Control end connection；
The control chip, for the charging voltage of the series battery collected to be transferred into the processor；
The processor, the charging voltage of the series battery for being collected according to generates charge request signal,
And the charge request signal is transferred to the communication protocol chip；
The communication protocol chip, for transmitting the charge request to the charger by first control end
Signal, to ask the charger output charging signals.
Optionally, the charging circuit 690 also includes：
Pressure unit, the input of the pressure unit is connected with the anode of the series battery；
PMU, the first end of the PMU is connected with the output end of the pressure unit, described
Second end of PMU is connected with the power input of the processor；
The pressure unit, the voltage for being inputted to the series battery carries out decompression processing, obtains decompression electricity
Pressure；
The PMU, for the step-down voltage to be exported to the power input of the processor, to institute
Processor is stated to power.
Optionally, the pressure unit includes：Two electric capacity and four switches, described two electric capacity are respectively the first electricity
Hold and the second electric capacity, four switches are respectively first switch, second switch, third switch, the 4th switch；
The positive pole of first electric capacity and the first end of first switch are connected, and the negative pole of first electric capacity is opened with second
Pass first end connection, the positive pole of first electric capacity with the 3rd switch first end be connected, the negative pole of first electric capacity and
The first end connection of 4th switch；
The positive pole of second electric capacity is connected with the second end of the described 3rd switch, the negative pole of second electric capacity and institute
State the second end connection of the 4th switch, the negative pole ground connection of second electric capacity, the second end ground connection of the 4th switch；
The first end of the first switch is the input of the pressure unit, and the first end of second switch is the drop
Press the output end of unit, the output end of the just extremely described pressure unit of second electric capacity；
Oscillator, for producing first phase, controls the first switch and second switch to close by the first phase
Close, control the 3rd switch and the 4th to switch off, first electric capacity and the second electric capacity are charged, second phase is produced,
Control the first switch and second switch to disconnect by the second phase, control the 3rd switch and the 4th switch to close
Close so that the voltage of the first electric capacity and the second electric capacity is equal.
Wherein, input block 630 can be used for the numeral or character information of reception user's input, and produce and mobile whole
The signal input that the user at end 600 is set and function control is relevant.Specifically, in the embodiment of the present invention, the input block
630 can include contact panel 631.Contact panel 631, also referred to as touch-screen, collect touch of the user on or near it
Operation (such as user uses the operations of any suitable object or annex on contact panel 631 such as finger, stylus), and root
Corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 631 may include touch detecting apparatus and touch
Touch two parts of controller.Wherein, touch detecting apparatus detects the touch orientation of user, and detects the letter that touch operation is brought
Number, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and it is changed
Into contact coordinate, then give the processor 650, and the order sent of reception processing device 650 and can be performed.Furthermore, it is possible to
Contact panel 631 is realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
631, input block 630 can also include other input equipments 632, and other input equipments 632 can include but is not limited to physics
One or more in keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc..
Wherein, display unit 640 can be used for information and the movement for showing the information inputted by user or being supplied to user
The various menu interfaces of terminal 600.Display unit 640 may include display panel 641, optionally, can use LCD or organic
The forms such as light emitting diode (Organic Light-Emitting Diode, OLED) configure display panel 641.
It should be noted that contact panel 631 can cover display panel 641, touch display screen is formed, when the touch display screen
Detect after the touch operation on or near it, processor 650 is sent to determine the type of touch event, with post processing
Device 650 provides corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and conventional control viewing area.The Application Program Interface is shown
Arrangement mode of area and the conventional control viewing area is not limited, can be arranged above and below, left-right situs etc. can distinguish two
The arrangement mode of viewing area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can
With the interface element such as the icon comprising at least one application program and/or widget desktop controls.The Application Program Interface is shown
Area can also be the empty interface not comprising any content.The conventional control viewing area is used to show the higher control of utilization rate, example
Such as, application icon such as settings button, interface numbering, scroll bar, phone directory icon etc..
Wherein processor 650 is the control centre of mobile terminal 600, utilizes various interfaces and connection whole mobile phone
Various pieces, by operation or perform and be stored in software program and/or module in first memory 621, and call and deposit
The data in second memory 622 are stored up, the various functions and processing data of mobile terminal 600 are performed, so as to mobile terminal
600 carry out integral monitoring.Optionally, processor 650 may include one or more processing units.
In the embodiment of the present invention, above-mentioned mobile terminal can be the mobile phone with charge function, tablet personal computer (Tablet
Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital
Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable device
(Wearable Device) etc..
More than, it is only the embodiment of the present invention, but protection scope of the present invention is not limited thereto, and it is any ripe
Know those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of charging circuit, it is characterised in that including：
Series battery, the series battery includes at least two batteries, the minus earth of the series battery, the string
The output end of the anode and charger that join battery pack is connected；
Control unit, the first sampling end of described control unit is connected with the anode of the series battery, described control unit
The first control end and the control end of charger connect, described control unit is used to gather the string by first sampling end
Join the charging voltage of battery pack, and first voltage control signal is generated according to the charging voltage, pass through first control end
The first voltage control signal is transmitted to the charger, the first voltage control signal is used to control the charger
Output voltage.
2. charging circuit as claimed in claim 1, it is characterised in that also include：
Sampling resistor, the first end of the sampling resistor is connected with the anode of the series battery, and the of the sampling resistor
One end is also connected with the first sampling end of described control unit, the second end of the sampling resistor and the output end of the charger
Connection, the second end of the sampling resistor is also connected with the second sampling end of described control unit；
Described control unit, is additionally operable to gather the voltage of the first end of the sampling resistor by first sampling end, passes through
Second sampling end gathers the voltage at the second end of the sampling resistor, according to the voltage of the first end of the sampling resistor and
The voltage at the second end of the sampling resistor determines the charging current of the series battery, calculates filling for the series battery
Current differential between electric current and preset charged electric current, and the first current controling signal is generated according to the current differential, lead to
Cross first control end and transmit first current controling signal to the charger, first current controling signal is used for
Control the output current of the charger.
3. charging circuit as claimed in claim 2, it is characterised in that the 3rd sampling end of described control unit and the charging
The output end connection of device；
Described control unit, is additionally operable to gather the current output voltage of the charger by the 3rd sampling end, will be described
The voltage of the first end of sampling resistor is defined as the charging voltage of the series battery, calculates the charging of the series battery
Voltage difference between voltage and preset charge voltage, by the current output voltage phase of the voltage difference and the charger
Plus, voltage parameter to be output is obtained, second voltage control signal is generated according to the voltage parameter to be output, passes through described first
Control end transmits the second voltage control signal to the charger, and the second voltage control signal is used to control described fill
The output voltage of electrical equipment.
4. charging circuit as claimed in claim 2, it is characterised in that also include：
Switch element, the first end of the switch element is connected with the second end of the sampling resistor, and the of the switch element
Two ends are connected with the output end of the charger, and the 3rd end of the switch element and the second control end of described control unit connect
Connect；
Described control unit, is additionally operable to by second control end to the switch element input switch control signal, described
Switch controlling signal is used for the closed and disconnected state for controlling the switch element.
5. charging circuit as claimed in claim 4, it is characterised in that the switch element includes at least one triode, or
Person includes at least one MOS type FET.
6. charging circuit as claimed in claim 5, it is characterised in that the switch element is partly led including the first metal oxide
Build FET and the second MOS type FET, wherein, first MOS type
The drain electrode of FET is the first end of the switch element, is connected with the second end of the sampling resistor, first metal
The source electrode of oxide semiconductor-type FET is connected with the source electrode of the second MOS type FET, institute
Second end of the drain electrode of the second MOS type FET for the switch element is stated, it is defeated with the charger
Enter end connection, the grid of the first MOS type FET and second MOS type
The grid of FET is the 3rd end of the switch element, is connected with the second control end of the unit processed.
7. the charging circuit as described in claim 1 to 6 any one, it is characterised in that described control unit includes processor
And control chip, the first output end connection of the first end of the processor and the control chip；
Described control unit also includes communication protocol chip, the first end of the communication protocol chip and the second of the processor
End connection, the second end of the communication protocol chip is the first control end of described control unit, the control with the charger
End connection；
The first end of the control chip is the first sampling end of described control unit, is connected with the first end of the sampling resistor
Connect；
The control chip, the voltage of the first end of the sampling resistor is gathered for the first end by institute's control chip, will
The voltage of the first end of the sampling resistor is defined as the charging voltage of the series battery, by the series-connected cell of the determination
The charging voltage of group is transferred to the processor；
The processor, the charging voltage for the series battery according to the determination generates charge request signal, and by institute
State charge request signal and be transferred to the communication protocol chip；
The communication protocol chip, for transmitting the charge request signal to the charger by first control end,
To ask the charger output charging signals.
8. charging circuit as claimed in claim 7, it is characterised in that also include：
Pressure unit, the input of the pressure unit is connected with the anode of the series battery；
PMU, the first end of the PMU is connected with the output end of the pressure unit, the power supply
Second end of administrative unit is connected with the power input of the processor；
The pressure unit, the voltage for being inputted to the series battery carries out decompression processing, obtains step-down voltage；
The PMU, for the step-down voltage to be exported to the power input of the processor, to the place
Reason device is powered.
9. charging circuit as claimed in claim 8, it is characterised in that the pressure unit includes：Two electric capacity and four open
Close, described two electric capacity are respectively the first electric capacity and the second electric capacity, four switches be respectively first switch, second switch,
3rd switch, the 4th switch；
The first end of the positive pole of first electric capacity and first switch is connected, and the of the negative pole of first electric capacity and second switch
One end is connected, and the positive pole of first electric capacity is connected with the first end of the 3rd switch, and the negative pole of first electric capacity is opened with the 4th
The first end connection of pass；
The positive pole of second electric capacity is connected with the second end of the described 3rd switch, the negative pole of second electric capacity and the described 4th
The second end connection of switch, the negative pole ground connection of second electric capacity, the second end ground connection of the 4th switch；
The first end of the first switch is the input of the pressure unit, and the first end of second switch is the pressure unit
Output end, the output end of the just extremely described pressure unit of second electric capacity；
Oscillator, for producing first phase, controls the first switch and second switch to close, control by the first phase
Make the 3rd switch and the 4th to switch off, first electric capacity and the second electric capacity are charged, second phase is produced, passes through institute
Stating second phase controls the first switch and second switch to disconnect, and controls the 3rd switch and the 4th switch closure so that
The voltage of first electric capacity and the second electric capacity is equal.
10. a kind of mobile terminal, it is characterised in that the mobile terminal includes any one charging described in claim 1 to 9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362703.2A CN107069888B (en) | 2017-05-22 | 2017-05-22 | Charging circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362703.2A CN107069888B (en) | 2017-05-22 | 2017-05-22 | Charging circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107069888A true CN107069888A (en) | 2017-08-18 |
| CN107069888B CN107069888B (en) | 2020-09-11 |
Family
ID=59610350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710362703.2A Active CN107069888B (en) | 2017-05-22 | 2017-05-22 | Charging circuit and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069888B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988426A (en) * | 2018-07-27 | 2018-12-11 | 北京小米移动软件有限公司 | charging circuit, terminal and charging method |
| CN109861335A (en) * | 2019-02-28 | 2019-06-07 | 维沃移动通信有限公司 | Charging system, electronic equipment and charge control method |
| CN110266066A (en) * | 2019-05-05 | 2019-09-20 | 江苏苏美达机电有限公司 | The battery charge controller and charge control method of more lithium battery group parallel connections |
| WO2020156267A1 (en) * | 2019-02-03 | 2020-08-06 | 华为技术有限公司 | Terminal device and conversion circuit control method |
| CN113447929A (en) * | 2020-03-27 | 2021-09-28 | 华为技术有限公司 | Signal transmitting circuit, receiving circuit and radar system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1429424A (en) * | 2000-03-22 | 2003-07-09 | 伊利诺伊大学评议会 | Dynamically regulated charge pump power converter based on ultra-capacitor |
| WO2009057404A1 (en) * | 2007-10-30 | 2009-05-07 | Kabushiki Kaisha Toshiba | Battery pack, charger, and battery pack system |
| CN102326313A (en) * | 2009-06-18 | 2012-01-18 | 松下电器产业株式会社 | Charging control circuit, battery pack, and charging system |
-
2017
- 2017-05-22 CN CN201710362703.2A patent/CN107069888B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1429424A (en) * | 2000-03-22 | 2003-07-09 | 伊利诺伊大学评议会 | Dynamically regulated charge pump power converter based on ultra-capacitor |
| WO2009057404A1 (en) * | 2007-10-30 | 2009-05-07 | Kabushiki Kaisha Toshiba | Battery pack, charger, and battery pack system |
| CN102326313A (en) * | 2009-06-18 | 2012-01-18 | 松下电器产业株式会社 | Charging control circuit, battery pack, and charging system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988426A (en) * | 2018-07-27 | 2018-12-11 | 北京小米移动软件有限公司 | charging circuit, terminal and charging method |
| WO2020156267A1 (en) * | 2019-02-03 | 2020-08-06 | 华为技术有限公司 | Terminal device and conversion circuit control method |
| CN109861335A (en) * | 2019-02-28 | 2019-06-07 | 维沃移动通信有限公司 | Charging system, electronic equipment and charge control method |
| CN110266066A (en) * | 2019-05-05 | 2019-09-20 | 江苏苏美达机电有限公司 | The battery charge controller and charge control method of more lithium battery group parallel connections |
| CN113447929A (en) * | 2020-03-27 | 2021-09-28 | 华为技术有限公司 | Signal transmitting circuit, receiving circuit and radar system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107069888B (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069888A (en) | A kind of charging circuit and mobile terminal | |
| CN104375090B (en) | Rechargeable lithium battery remaining capacity remote monitoring method | |
| CN109065989A (en) | A kind of charging method and charging unit | |
| CN109672254A (en) | A kind of charging control circuit, terminal device and control method | |
| CN107037927B (en) | A kind of touch-control driving method, device and electronic equipment | |
| CN108899952A (en) | A kind of more battery charging and discharging devices and mobile terminal | |
| CN202749620U (en) | Display device used for universal serial bus (USB) data line / power line | |
| CN104158235B (en) | A kind of battery charging control method, equipment and system | |
| CN107980190A (en) | Electronic device and on demand charging method | |
| CN206878505U (en) | A kind of charging circuit and mobile terminal | |
| CN106981904A (en) | The method and charge-discharge control system of a kind of charge and discharge control | |
| CN109494843A (en) | Battery control method, device and electronic equipment | |
| CN108448673A (en) | A kind of charging method, mobile terminal and charger | |
| CN107834640A (en) | A kind of charging method and terminal | |
| CN109542161A (en) | A kind of clock signal generating apparatus and method | |
| CN103035968B (en) | Mobile terminal charging method and system | |
| CN109067019A (en) | Charge-discharge circuit, method, electronic equipment and storage medium | |
| CN112910054B (en) | Charging circuit, charging device, electronic apparatus, and charging control method | |
| CN101908776A (en) | Battery charging device | |
| CN107357455A (en) | A kind of driving method of display screen, display screen and mobile terminal | |
| CN204046673U (en) | A kind of mobile phone with double cell function | |
| CN105163224A (en) | Line-controlled earphone control method and system, and line-controlled earphone | |
| KR101646207B1 (en) | Apparatus for informing sub battery status | |
| CN110649673B (en) | Mobile terminal | |
| CN208706256U (en) | Storage class circuit, memory detecting tool and memory detection system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |