CN109412220A - Electronic device and its charging method and charging method - Google Patents
Electronic device and its charging method and charging method Download PDFInfo
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- CN109412220A CN109412220A CN201710711479.3A CN201710711479A CN109412220A CN 109412220 A CN109412220 A CN 109412220A CN 201710711479 A CN201710711479 A CN 201710711479A CN 109412220 A CN109412220 A CN 109412220A
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- 238000000034 method Methods 0.000 title claims description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 144
- 230000005611 electricity Effects 0.000 claims description 129
- 230000037361 pathway Effects 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000024241 parasitism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003071 parasitic 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
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- H02J7/0021—
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- H02J7/0077—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a kind of electronic device, includes power transmission end, the first battery unit, the second battery unit, the first voltage-controlled turning circuit, first choice turning circuit, the second voltage-controlled turning circuit, the second selection turning circuit and processing unit.First voltage-controlled turning circuit is electrically connected the first battery unit to power transmission end when the voltage of the first battery unit is higher than the voltage at circuit transmission end.Second voltage-controlled turning circuit is electrically connected the second battery unit to power transmission end when the voltage of the second battery unit is higher than the voltage at circuit transmission end.First battery unit is electrically connected to power transmission end according to the first open signal by first choice turning circuit.Second battery unit is electrically connected to power transmission end according to the second open signal by the second selection turning circuit.Processing unit selectively generates the first open signal and the second open signal.
Description
[technical field]
The present invention relates to charge and discharge power technology, especially a kind of electronic device and its charging method and charging method.
[background technique]
With advances in technology with development, electronic device increasingly popularized, and it is more towards it is light-weight, small in size, convenient for taking
The characteristics such as band are designed.In general, in order to meet the requirement of carrying convenience, electronic device is made with battery unit mostly
For the main power source for maintaining it to operate.
The volume of battery unit is limited to the volume of electronic device and is restricted.Due to the volumetric constraint of battery unit, electricity
Pool unit all has certain effective power-on time, and this effective power-on time for the severe user of electronic device simultaneously
Not enough.In order to promote the operation freedom degree of electronic device, the electronic device with double cell unit is developed, also at present to borrow
This improves the operable time of electronic device.
However, the capacity of used two battery unit is not identical in the conventional architectures of electronic device.It is general and
Speech, its in two battery units go here and there the higher battery unit of number and are mostly the major cell of electronic device, and go here and there the lower battery list of number
Member is mostly the secondary battery of electronic device.Also, in traditional charging/discharging thereof, electronic device is all advanced with voltage the higher person
Row electric discharge, and first charged with voltage junior.Due to the higher voltage with higher of secondary battery strings number, in electricity
Secondary battery discharges prior to major cell forever in the conventional architectures of sub-device.In addition, the string higher battery unit institute of number
The space needed is also larger, and the volume of electronic device is made to be difficult to reduce.
[summary of the invention]
In one embodiment, a kind of electronic device includes power transmission end, the first battery unit, the second battery unit, the
One voltage-controlled turning circuit, first choice turning circuit, the second voltage-controlled turning circuit, the second selection turning circuit and processing unit.
First voltage-controlled turning circuit is coupled between the first battery unit and power transmission end.It is higher than electricity in the voltage of the first battery unit
When power transmission end, the first battery unit is electrically connected to power transmission end by the first voltage-controlled turning circuit.First choice electric conduction
Road is coupled between the first battery unit and circuit transmission end.First choice turning circuit is electric by first according to the first open signal
Pool unit is electrically connected to power transmission end.Second voltage-controlled turning circuit be coupled to the second battery unit and power transmission end it
Between.When the voltage of the second battery unit is higher than power transmission end, the second voltage-controlled turning circuit electrically connects the second battery unit
It is connected to power transmission end.Second selection turning circuit is coupled between the second battery unit and circuit transmission end.Second selection is led
Second battery unit is electrically connected to power transmission end according to the second open signal by circuit passband.Processing unit detects the first battery
Unit and the second battery unit generate the first open signal and the second open signal with selectivity.
In one embodiment, a kind of charging method includes according to the between the first battery unit and battery transmission end
The voltage-controlled path of voltage turn-on first at one voltage-controlled path both ends, to cause the first battery unit to put via the first voltage-controlled guiding path
It supplies electricity to power transmission end, led according to the voltage at the second voltage-controlled path both ends between the second battery unit and power transmission end
Logical second voltage-controlled path, to cause the second battery unit to discharge via the second voltage-controlled path to power transmission end, the first electricity of detecting
Pool unit and the second battery unit, the voltage for being greater than or equal to the second battery unit in the voltage for detecting the first battery unit
When, the first switch path between the first battery unit and power transmission end is connected and disconnects positioned at the second battery unit
Second switch path between power transmission end is passed with causing the first battery unit to discharge via first switch path to electric power
Defeated end, and when the voltage for detecting the second battery unit is greater than the voltage of the first battery unit, second switch path is connected
And first switch path is disconnected, gives power transmission end to cause the second battery unit to discharge via second switch path.
In one embodiment, a kind of charging method includes the first battery unit and the second battery list of detecting electronic device
Member, when the electricity of the first battery unit be not higher than the second battery unit one set electricity difference of electricity when, conducting be located at first electricity
First switch path and closing between pool unit and power transmission end is between the second battery unit and power transmission end
Second switch path, to cause the first battery unit to receive the external power that power transmission end is transmitted via first switch path
Until the set electricity of electricity one that the electricity of the first battery unit is higher than the second battery unit is poor, and when the first battery unit
When electricity is higher than the electricity set electricity difference of the second battery unit, conducting second switch path simultaneously disconnects first switch path, with
The external power for causing the second battery unit to be transmitted via second switch path reception power transmission end is until the second battery list
The electricity of member is equal to the electricity of the first battery unit.
The electronic device and its charging method and charging method of the embodiment of the present invention can pass through two selection turning circuit controls
It makes one of specified person in two battery units to discharge and charge, and the service efficiency of two battery units can be promoted, and also logical
It crosses two voltage-controlled turning circuits and makes this two battery unit that can be parallel to power transmission end and discharge, to ensure in selection turning circuit
When switching over or thering is a certain battery unit to be detached from electronic device, still there is battery unit that can put via voltage-controlled turning circuit
Electricity, and then can also maintain the system stability of electronic device.In addition, the electronic device and its charging method of the embodiment of the present invention with
Charging method can make the volume of electronic device be reduced using two battery units with identical capacity.
Describe detailed features and advantage of the invention in detail in embodiments below, content is enough to make any to be familiar with phase
Close those skilled in the art understand technology contents of the invention and implement accordingly, and according to content disclosed by this specification, apply for a patent model
It encloses and schema, it is any to be familiar with relevant art and be readily understood upon the relevant purpose of the present invention and advantage.
[Detailed description of the invention]
Fig. 1 is the box schematic diagram of an embodiment of electronic device.
Fig. 2 is the flow diagram of an embodiment of charging method.
Fig. 3 is the circuit schematic diagram of an embodiment of electronic device.
Fig. 4 is the flow diagram of another embodiment of charging method.
Fig. 5 is the flow diagram of an embodiment of charging method.
Fig. 6 is the flow diagram of an embodiment of step S23 in Fig. 5.
[specific embodiment]
Fig. 1 is the summary block diagram of an embodiment of electronic device.Referring to Fig. 1, electronic device 100 includes electric power
Transmission end 110, at least two battery units, at least two voltage-controlled turning circuits, at least two selection turning circuits and processing unit
150。
Hereinafter, with two battery units (being referred to as the first battery unit 121 and the second battery unit 122), two
Voltage-controlled turning circuit (being referred to as the first voltage-controlled turning circuit 131 and the second voltage-controlled turning circuit 132) and at least two choosings
Select turning circuit (be referred to as to be illustrated for first choice turning circuit 141 and the second selection turning circuit 142,
But its quantity is not limited thereto.In some embodiments, the quantity of voltage-controlled turning circuit and the quantity of selection turning circuit
Can the quantity of corresponding battery unit set.For example, if the quantity of battery unit is N number of, voltage-controlled conducting
The quantity of circuit and the quantity of selection turning circuit also may respectively be N number of.But the present invention is not limited only to this.
In some embodiments, the specification of the first battery unit 121 is substantially the same in the rule of the second battery unit 122
Lattice.For example, the first battery unit 121 and the second battery unit 122 respectively can by cell device with a string together (1S1P)
Mode form.
First voltage-controlled turning circuit 131 is parallel to first choice turning circuit 141, and the first voltage-controlled turning circuit 131 with
First choice turning circuit 141 is coupled between the first battery unit 121 and power transmission end 110.Second voltage-controlled turning circuit
132 are parallel to the second selection turning circuit 142, and the second voltage-controlled turning circuit 132 is coupled to the second selection turning circuit 142
Between second battery unit 122 and power transmission end 110.Processing unit 150 is coupled to the first battery unit 121, the second battery
Unit 122, first choice turning circuit 141 and the second selection turning circuit 142.
First voltage-controlled turning circuit 131 has the first voltage-controlled path, and the first voltage-controlled path is located at the first voltage-controlled electric conduction
Between the first end and second end on road 131.First voltage-controlled turning circuit 131 according to the voltage at the first voltage-controlled path both ends to determine
It is fixed that the first voltage-controlled path whether is connected.In this, the first end of the first voltage-controlled turning circuit 131 is coupled to the first battery unit 121,
And first the second end of voltage-controlled turning circuit 131 be coupled to power transmission end 110.In other words, the first voltage-controlled path is to be located at the
Between one battery unit 121 and power transmission end 110, and the first voltage-controlled turning circuit 131 is according to the first battery unit 121
Voltage and the voltage at power transmission end 110 decide whether that the first voltage-controlled path is connected.
Second voltage-controlled turning circuit 132 has the second voltage-controlled path, and the second voltage-controlled path is located at the second voltage-controlled electric conduction
Between the first end and second end on road 132.Second voltage-controlled turning circuit 132 according to the voltage at the second voltage-controlled path both ends to determine
It is fixed that the second voltage-controlled path whether is connected.In this, the first end of the second voltage-controlled turning circuit 132 is coupled to the second battery unit 122,
And second the second end of voltage-controlled turning circuit 132 be coupled to power transmission end 110.In other words, the second voltage-controlled path is to be located at the
Between two battery units 122 and power transmission end 110, and the second voltage-controlled turning circuit 132 is according to the second battery unit 122
Voltage and the voltage at power transmission end 110 decide whether that the second voltage-controlled path is connected.
First choice turning circuit 141 has first switch path, and first switch path is located at first choice electric conduction
Between the first end and second end on road 141.First choice turning circuit 141 is controlled by processing unit 150, and can be according to processing
Whether signal deciding caused by unit 150 is connected first switch path.In this, the first end of first choice turning circuit 141
It is coupled to the first battery unit 121, the second end of first choice turning circuit 141 is coupled to power transmission end 110, and the first choosing
The control terminal for selecting turning circuit 141 is coupled to processing unit 150.In other words, first switch path is to be located at the first battery unit
Between 121 and power transmission end 110.
Second selection turning circuit 142 has second switch path, and second switch path is located at the second selection electric conduction
Between the first end and second end on road 142.Second selection turning circuit 142 is controlled by processing unit 150, and can be according to processing
Whether signal deciding caused by unit 150 is connected second switch path.In this, second selects the first end of turning circuit 142
It is coupled to the second battery unit 122, the second end of the second selection turning circuit 142 is coupled to power transmission end 110, and the second choosing
The control terminal for selecting turning circuit 142 is coupled to processing unit 150.In other words, second switch path is to be located at the second battery unit
Between 122 and power transmission end 110.
In one embodiment, electronic device 100 also includes circuit system 160, and power transmission end 110 is connected to electronics dress
Set 100 circuit system 160.In this, power transmission end 110 can be used to provide electrical power to circuit system 160 with maintenance system electricity
The running on road 160.Wherein, the power source that power transmission end 110 is provided to circuit system 160 can be for by electronic device 100
The first battery unit 121 and/or the second battery unit 122 via the first voltage-controlled path, the second voltage-controlled path, first switch road
Battery electric power provided by diameter and/or second switch path.Alternatively, being provided by the external powering device 200 outside electronic device 100
To the external power at the power transmission end 110 of electronic device 100.In addition, the power transmission end 110 of electronic device 100 can also incite somebody to action
External power provided by external powering device 200 is transmitted to the first battery unit 121 and/or second in electronic device 100
Battery unit 122, to charge to the first battery unit 121 and/or the second battery unit 122.
Processing unit 150 is to detect the first battery unit 121 and the second battery unit 122.Also, processing unit 150
Can any embodiment of charging method according to the present invention and any embodiment of charging method selectively generate first and open
Signal SE1, the second open signal SE2, the first shutdown signal SD1 and/or the second shutdown signal SD2 are opened, to control the first battery
Charging, the electric discharge running of unit 121 and/or the second battery unit 122, so that the first battery unit 121 and the second battery unit
122 can also efficiently be employed and be promoted the system stability of electronic device 100.
Fig. 2 is the flow diagram of an embodiment of charging method.Fig. 1 and Fig. 2 are please referred to, in an implementation of charging method
In example, the voltage-controlled turning circuit 131 of the first of electronic device 100 can be voltage-controlled according to the voltage turn-on first at the first voltage-controlled path both ends
Path (step S11), the second voltage-controlled turning circuit 132 can be according to the voltage-controlled paths of voltage turn-on second at the second voltage-controlled path both ends
(step S12), and the processing unit 150 of electronic device 100 can detect the first battery unit 121 and the second battery unit 122
State (step S13).
In an embodiment of step S11, the first voltage-controlled turning circuit 131 can the voltage of its first end be higher than its second
When the voltage at end, the first voltage-controlled path is connected, and when the voltage of its first end is less than or equal to the voltage of its second end, no
The first voltage-controlled path is connected.In other words, when the voltage of the first battery unit 121 is higher than the voltage at power transmission end 110, first
Battery unit 121 can be electrically connected to power transmission end 110 by the first voltage-controlled path, and when the first battery unit 121
When voltage is less than or equal to the voltage at power transmission end 110, the first battery unit 121 then can not be electrical by the first voltage-controlled path
It is connected to power transmission end 110.
In another embodiment of step S11, the voltage of the first battery unit 121 need to be than the voltage at power transmission end 110
When being higher by first voltage threshold values, the first voltage-controlled path is just connected in the first voltage-controlled turning circuit 131.In this, first voltage threshold values is again
It can be described as the conduction threshold in the first voltage-controlled path.In some embodiments, first voltage threshold values can be between 0.15 volt (V) extremely
Between 0.7 volt, but the present invention is not limited thereto.
In an embodiment of step S12, the second voltage-controlled turning circuit 132 can the voltage of its first end be higher than its second
When the voltage at end, the second voltage-controlled path is connected, and when the voltage of its first end is less than or equal to the voltage of its second end, no
The second voltage-controlled path is connected.In other words, when the voltage of the second battery unit 122 is higher than the voltage at power transmission end 110, second
Battery unit 122 can be electrically connected to power transmission end 110 by the second voltage-controlled path, and when the second battery unit 122
When voltage is less than or equal to the voltage at power transmission end 110, the second battery unit 122 then can not be electrical by the second voltage-controlled path
It is connected to power transmission end 110.
In another embodiment of step S12, the voltage of the second battery unit 121 need to be than the voltage at power transmission end 110
When being higher by second voltage threshold values, the second voltage-controlled path is just connected in the second voltage-controlled turning circuit 132.In this, second voltage threshold values is again
It can be described as the conduction threshold in the second voltage-controlled path.In some embodiments, second voltage threshold values can be between 0.15 volt (V) extremely
Between 0.7 volt, but the present invention is not limited thereto.
In an embodiment of step S11 and step S12, when the first voltage-controlled path is connected in the first voltage-controlled turning circuit 131
And the second voltage-controlled onunit 132 when being also switched on the second voltage-controlled path, the first battery unit 121 can be with the second battery unit 122
It is parallel to power transmission end 110.
In one embodiment, the first voltage-controlled turning circuit 131 and the second voltage-controlled turning circuit 132 can be only permission electric current list
To the unidirectional current circuit of circulation, such as diode.In this, the first voltage-controlled turning circuit 131 only allows electric current from its first end
Second end is flowed to, and the second voltage-controlled turning circuit 132 only allows electric current to flow to second end from its first end.In other words, first
Voltage-controlled turning circuit 131 only allows electric current to flow to power transmission end 110, and the second voltage-controlled electric conduction from the first battery unit 121
Road 132 only allows electric current to flow to power transmission end 110 from the second battery unit 122.Therefore, the first voltage-controlled turning circuit 131
First voltage-controlled path is used as the discharge path that the first battery unit 121 is discharged to power transmission end 110, and the second pressure
The voltage-controlled path of the second of conduct circuit passband 132 is used as the electric discharge that the second battery unit 122 is discharged to power transmission end 110
Path.
In one embodiment, the first battery unit 121 is built among electronic device 100, and the second battery unit 122
It is separably to be incorporated into electronic device 100.In other words, the second battery unit 122 can be easily removed, be replaced, and be had
Chance is detached from electronic device 100 due to electronic device 100 is hit.Therefore, in order to ensure the electric power of the first battery unit 121
The speed for being provided to power transmission end 110 is enough fast, and in some embodiments, the first voltage-controlled turning circuit 131, which can be selected, to be had fastly
The unidirectional current circuit of fast switching characteristic is realized, such as Schottky diode (Schottky diode), quick diode etc..
Also, the unidirectional current circuit with faster switching characteristics can be selected also to realize in the second voltage-controlled turning circuit 132.
In an embodiment of step S13, processing unit 150 is the voltage and second for detecting the first battery unit 121
The voltage of battery unit 122, and processing unit 150 can be according to the voltage and the second battery unit 122 of the first battery unit 121
Voltage determine to meet the tendency of with which battery unit discharged (step S14).
In an embodiment of step S14, be greater than when the voltage that processing unit 150 detects the first battery unit 121 or
Equal to the second battery unit 122 voltage when, processing unit 150 can cause the first battery unit 121 to be connected via first choice
It discharges to power transmission end 110 (step S15) in the first switch path of circuit 141.Also, when processing unit 150 detects the
When the voltage of two battery units 122 is greater than the voltage of the first battery unit 121, processing unit 150 can cause the second battery unit
122 discharge via the second switch path of the second selection turning circuit 142 to power transmission end 110 (step S16).Therefore, this
When processing unit 150 be alternately to select the first battery unit 121 one higher with voltage in the second battery unit 122 to put
Electricity, and with the first battery unit 121 be main discharge battery, and make in the second battery unit 122 tension discharge extremely
When identical as the voltage of the first battery unit 121, processing unit 150 will change to be discharged with the first battery unit 121.But this
Invention is not limited thereto.
In another embodiment of step S14, processing unit 150 is then in the voltage for detecting the first battery unit 121
Just execute step S15 when voltage than the second battery unit 122 is higher by first voltage threshold values, and in detecting the second battery list
The voltage of member 122 just executes step S16 when being higher by second voltage threshold values than the voltage of the first battery unit 121.Therefore, locate at this time
Reason unit 150 is to select the first battery unit 121 in proper order with the second battery unit 122 to discharge, and make the first electricity
Voltage difference between pool unit 121 and the second battery unit 122 can will not be at a distance of excessive.
In one embodiment, first voltage threshold values can be equal to second voltage threshold values.In some embodiments, first voltage
Threshold values and second voltage threshold values can be 0.2 volt.
In an embodiment of step S14, if the initial voltage of the first battery unit 121 and the second battery unit 122
Initial voltage it is identical when, processing unit 150 can first select the first battery unit 121 to be discharged (i.e. execution step S15).It
Afterwards, when detecting the first battery unit 121 because of electric discharge and being lower than the one second voltage threshold values of voltage of the second battery unit 122,
Processing unit 150 selects the second battery unit 122 to be discharged (i.e. execution step S16) again.It connects, in the second battery unit
122 when being lower than the one first voltage threshold values of voltage of the first battery unit 121 because of electric discharge, and processing unit 150 is reelected again with first
Battery unit 121 is discharged and (executes step S15 again), and alternately rule is sequentially executable with sequence with this.
For example, it is assumed that a threshold voltage and second voltage threshold values are all 0.2 volt, and the first battery unit at this time
The voltage of 121 voltage and the second battery unit 122 is all full charging pressure, such as at 4.2 volts, processing unit 150 can be selected first
It selects and executes step S15.When voltage to be detected to the first battery unit 121 drops to 4.0 volts, processing unit 150 can be because of
Difference between one battery unit 121 and the voltage of the second battery unit 122 has reached second voltage threshold values and has executed step S16, makes
The voltage for obtaining the second battery unit 122 starts to be gradually reduced from 4.2 volts, and until detects the second battery unit 122
When voltage drops to 3.8 volts, processing unit 150 can be because between the second battery unit 122 and the voltage of the first battery unit 121
Difference has reached first voltage threshold values and has changed and execute step S15, is discharged in proper order with this.
In an embodiment of step S15, processing unit 150 can produce the first open signal SE1 to first choice conducting
Circuit 141, and generate the first shutdown signal SD1 to second and select turning circuit 142, so that first choice turning circuit
141 can be connected first switch path according to the first open signal SE1, and the second selection turning circuit 142 can be closed according to first
Signal SD1 disconnects second switch path.And in an embodiment of step S16, processing unit 150 can produce the second open signal
SE2 to second selects turning circuit 142, and generates the second shutdown signal SD2 to first choice turning circuit 141, so that
Second switch path, and first choice turning circuit can be connected in second selection turning circuit 142 according to the second open signal SE2
141 can disconnect first switch path according to the second shutdown signal SD2.
Fig. 3 is the circuit schematic diagram of an embodiment of electronic device.It please refers to Fig.1 to Fig.3, is connected in first choice
In one embodiment of circuit 141 and the second selection electric conduction 142, first choice turning circuit 141 can be by one or more switches
Element M1 is formed, and the second selection electric conduction 142 can be made of one or more switch elements M2.Hereinafter, being by one
First choice turning circuit 141 composed by switch element M1 and the second selection conducting as composed by a switch element M2
It is illustrated for circuit 142, but this is not intended to limit the invention.
The first end of switch element M1 is coupled to power transmission end 110, and the second end of switch element M1 is coupled to the first electricity
Pool unit 121, and the control terminal of switch element M1 is coupled to processing unit 150.In this, the first switch path is to be located at
Between the first end and second end of switch element M1, and the control terminal of switch element M1 can be used to control opening for first switch path
It opens or closes.The first end of switch element M2 is coupled to power transmission end 110, and the second end of switch element M2 is coupled to the second electricity
Pool unit 122, and the control terminal of switch element M2 is coupled to processing unit 150.In this, the second switch path is to be located at
Between the first end and second end of switch element M2, and the control terminal of switch element M2 can be used to control opening for second switch path
It opens or closes.
Therefore, in an embodiment of step S15, the control terminal of switch element M1 is in receiving the first open signal SE1
When, first switch path is connected in switch element M1, so that its first end can be electrically connected to second end.Also, switch element M2
Control terminal when receiving the first shutdown signal SD1, switch element M2 disconnect second switch path so that its first end can not
It is electrically connected to second end.In other words, the first battery unit 121 can be discharged to power transmission end by first switch path at this time
110, and the second battery unit 122 can not be discharged to power transmission end 110 by second switch path.
In an embodiment of step S16, the control terminal of switch element M1 is opened when receiving the second shutdown signal SD2
It closes element M1 and disconnects first switch path, so that its first end can not be electrically connected to second end.Also, the control of switch element M2
When receiving the second open signal SE2, second switch path is connected in switch element M2, so that its first end can electrically connect at end processed
It ties to second end.In other words, at this time can the second battery unit 122 power transmission end 110 is discharged to by second switch path, and
First battery unit 121 can not but be discharged to power transmission end 110 by first switch path.
In an embodiment of first choice turning circuit 141, first choice turning circuit 141 also may include diode
D1, and diode D1 is coupled between the first end and second end of switch element M1.In this, the anode of diode D1 is coupled to out
The second end of element M1 is closed, and the cathode of diode D1 is coupled to the first end of switch element M1.When the first battery unit 121
When voltage difference between voltage and the voltage at power transmission end 110 causes diode D1 to be connected, the first battery unit 121 can be through
Thus diode D1 is discharged to power transmission end 110.In this, diode D1 is one-way conduction circuit, therefore diode D1 only allows
Electric current flows to its cathode from its anode, and can be used as the discharge path that the first battery unit 121 is discharged to power transmission end 110.
Therefore, in one embodiment, the first battery unit 121, which removes, to press via the first of the first voltage-controlled turning circuit 131
Control path (if the first voltage-controlled path can be connected in the voltage difference between the first battery unit 121 and power transmission end 110) with
And the first switch path of first choice turning circuit 141 is (if first choice turning circuit 141 receives the first open signal
SE1 it) is discharged to outside power transmission end 110, the first battery unit 121 can also be via two poles in first choice turning circuit 141
Body D1 is discharged to power transmission end 110 (if the voltage difference between the first battery unit 121 and power transmission end 110 causes
Diode D1 conducting).In other words, at least three discharge paths may be present altogether for the first battery unit 121, and wherein
One discharge path for selecting the first switch path of turning circuit 141 to can control by processing unit 150.
Similarly, in one embodiment, the second selection turning circuit 142 also may include diode D2, and diode D2 coupling
It is connected between the first end and second end of switch element M2.In this, the anode of diode D2 is coupled to the second of switch element M2
End, and the cathode of diode D2 is coupled to the first end of switch element M2.When the voltage and power transmission of the second battery unit 122
When voltage difference between the voltage at end 110 causes diode D2 to be connected, the second battery unit 122 can be put through thus diode D2
Electricity is to power transmission end 110.In this, diode D2 is one-way conduction circuit, therefore diode D2 only allows electric current from its anode stream
To its cathode, and it can be used as the discharge path that the second battery unit 122 is discharged to power transmission end 110.
Therefore, in one embodiment, the second battery unit 122, which removes, to press via the second of the second voltage-controlled turning circuit 132
Control path and the second switch path of the second selection turning circuit 142 are (if the second selection turning circuit 142 receives second
Open signal SE2) it is discharged to outside power transmission end 110, the second battery unit 122 can also be via the second selection turning circuit 142
In diode D2 be discharged to power transmission end 110 (if the voltage between the second battery unit 122 and power transmission end 110
Difference causes diode D2 to be connected).
In some embodiments, diode D1 can be switch element M1 generated parasitism diode in circuit manufacture procedure,
And diode D2 can be switch element M2 generated parasitism diode in circuit manufacture procedure.In this, switch element M1, M2 distinguish
It is realized using p-type transistor, but the present invention is not limited only to this, switch element M1, M2 can also be with N-type transistors, transmission gate
(transmission gate, TG) etc. is realized.
Fig. 4 is the flow diagram of another embodiment of charging method.One referring to FIG. 1 to FIG. 4, in charging method is real
Apply in example, processing unit 150 can also when the voltage for detecting the first battery unit 121 drops to predeterminated voltage (step S17),
Alarm signal Sa (step S18) is generated to prompt the user of electronic device 100.
In one embodiment, electronic device 100 includes also alarm unit 170, and alarm unit 170 is coupled to processing unit
150.The alarm signal Sa that alarm unit 170 can be exported according to processing unit 150 generates information warning.For example, warning is single
Member 170 can be display element, such as display screen, light-emitting diode, after receiving alarm signal Sa can by display information warning,
It flashes, the modes such as specific coloured light prompt user.In another example alarm unit 170 can be acoustics unit, as buzzer,
Loudspeaker, loudspeaker etc., the capable of emitting sound prompts user after receiving alarm signal Sa.
In one embodiment, predeterminated voltage than the second battery unit 122 minimum voltage of electricity when being discharged to 0% more
Greatly, and predeterminated voltage is also bigger than minimum voltage of the electricity of the first battery unit 121 when being discharged to 0%.In some implementations
In example, each specification of the first battery unit 121 is substantially the same in the second battery unit 122.For example, the first battery unit
When the minimum voltage of 121 minimum voltage and the second battery unit 122 is 3.0 volts, predeterminated voltage can be 3.3 volts.
In an embodiment of charging method, processing unit 150 can decline in the voltage for detecting the first battery unit 121
When to predeterminated voltage (step S17), step S16 is executed to generate the second open signal SE2 conducting the second selection turning circuit
142, first to consume the electricity of the second battery unit 122 and retain the electricity of the first battery unit 121.Whereby, so that the second electricity
Even if the electricity of pool unit 122 is reduced to 0% or user when pulling out the second battery unit 122 and replacing, electronic device
100 still can maintain it to operate and user is notified to carry out normal shutdown by the electric power of the first battery unit 121, without rapid
So shutdown.
Fig. 5 is the flow diagram of an embodiment of charging method.Please refer to Fig. 1 to Fig. 5, the processing of electronic device 100
Unit 150 can after receiving charging signals according to the present invention the charging method of any embodiment to the first battery unit 121 with
And second battery unit 122 charge.In one embodiment, charging signals can be the power transmission end 110 of electronic device 100
It is generated when being electrically connected with external powering device 200.
In an embodiment of charging method, electronic device 100 can detect the first battery unit using processing unit 150
121 and second battery unit 122 (step S21), and processing unit 150 can be according to the electricity number of the first battery unit 121
Subsequent execution step is selected with the electricity number of the second battery unit 122.
In an embodiment of charging method, processing unit 150 can first judge whether the electricity of the first battery unit 110 surpasses
Electricity threshold values is crossed, and judges whether the electricity of the second battery unit 122 is more than electricity threshold values (step S22).In this, electricity valve
Value is processing unit 150 to determine whether the electricity of battery unit is completed the parameter of charging.In some embodiments, electricity
Threshold values can be 95%, but the present invention is not limited only to this.
If processing unit 150 determines that the electricity of the electricity and the second battery unit 122 of the first battery unit 121 is all less than
Electricity threshold values, processing unit 150 can be according to the electricity of the first battery unit 121, the electricity of the second battery unit 122, set electricity
Difference and established rule (step S23) are measured alternately to generate the first open signal SE1 and the second open signal SE2.In other words,
At this point, the first battery unit 121 can be alternately charged with the second battery unit 122.
Fig. 6 is the flow diagram of an embodiment of step S23 in Fig. 5.Fig. 1 to Fig. 6 is please referred to, the one of established rule
In embodiment, when the electricity for the first battery unit 121 that processing unit 150 is detected is not higher than the second battery unit 122
When one set electricity difference of electricity, the first switch path of first choice turning circuit 141 is connected in processing unit 150, to cause electricity
The received external powers of the institute of power transmission end 110 can charge (step to the first battery unit 121 via first switch path
S23a).Also, when the electricity for the first battery unit 121 that processing unit 150 is detected is above the second battery unit 122
One set electricity difference of electricity when, processing unit 150 conducting second selection turning circuit 142 second switch path, to cause
External power can be charged (step S23b) to the second battery unit 122 via second switch path.
In an embodiment of step S23a, the exportable first open signal SE1 of processing unit 150 to first choice is connected
Circuit 141 exports the first shutdown signal SD1 to second selection turning circuit 142 so that first switch path is connected to close
Second switch path, so that the first battery unit 121 can receive external power via first switch path.In this, first
The sustainable conducting of switching pathway, so that external power is sustainable to carry out charging to the first battery unit 121 until the first battery list
After the electricity of the second battery unit of electricity ratio 122 of member 121 is higher by set electricity difference, processing unit 150 just stops conducting first
Switching pathway.
In one embodiment, processing unit 150 can be detected between the first battery unit 121 and the second battery unit 122
Electricity difference, and it is equal to set electricity in detecting the electricity difference between the first battery unit 121 and the second battery unit 122
After amount difference, the second shutdown signal SD2 of output disconnects first switch path to first choice turning circuit 141.
In an embodiment of step S23b, the exportable second open signal SE2 to second of processing unit 150 selection conducting
Circuit 142 exports the second shutdown signal SD1 and closes to first choice turning circuit 141 so that second switch path is connected
First switch path, so that the second battery unit 122 can receive external power via second switch path.
In one embodiment, processing unit 150 can be detected between the first battery unit 121 and the second battery unit 122
Electricity difference, and after detecting the electricity difference between the first battery unit 121 and the second battery unit 122 and being zero, it is defeated
The first shutdown signal SD1 to second selects turning circuit 142 to disconnect second switch path out.
If processing unit 150 determines that the electricity of the first battery unit 121 is more than electricity threshold values and the second battery unit 122
When electricity is less than electricity threshold values, processing unit 150 can export the second shutdown signal SD2 and disconnect first choice turning circuit 141
First switch path, and export the second open signal SE2 conducting second selection turning circuit 142 second switch path, with
Cause external power that can be charged (step S24) to the second battery unit 122 via second switch path.In an embodiment
In, after Yu Zhihang step S24, processing unit 150 can no longer judge whether the electricity of the second battery unit 122 has been charged to electricity
Threshold values, and constant conduction second switch path, so that the second battery unit 122 can be filled completely full (step by external power
S25), such as it is charged to 100%.
Similarly, if processing unit 150 determines that the electricity of the first battery unit 121 is less than electricity threshold values and the second battery
When the electricity of unit 122 is more than electricity threshold values, processing unit 150 can export the first shutdown signal SD1 and disconnect the second selection conducting
The second switch path of circuit 142, and export the first switch of the first open signal SE1 conducting first choice turning circuit 141
Path, to cause external power that can be charged (step S26) to the first battery unit 121 via first switch path.One
In embodiment, after Yu Zhihang step S26, processing unit 150 can no longer judge whether the electricity of the first battery unit 121 is charged to
Electricity threshold values, and constant conduction first switch path so that external power the first battery unit 121 can be filled completely it is full
(step S27), such as it is charged to 100%.
If processing unit 150 determines that the electricity of the first battery unit 121 and the electricity of the second battery unit 122 are all more than electricity
When measuring threshold values, processing unit 150 can terminate charging procedure (step S28), even and if connect power transmission end 110 still can at this time
External power is received, but external power will not charge to the first battery unit 121 and the second battery unit 122.
In an embodiment of step S28, the exportable first shutdown signal SD1 of processing unit 150 disconnects second switch road
Diameter, and export the second shutdown signal SD2 and disconnect first switch path, to terminate charging procedure whereby.
In one embodiment, processing unit 150 in generate the first open signal SE1 to first choice turning circuit 141 (or
Generate the second open signal SE2 to second selection turning circuit 142) before, it can first generate the second shutdown signal SD2 to first choosing
Turning circuit 141 is selected, and generates the first shutdown signal SD1 to second and selects turning circuit 142, to disconnect first switch path
And it second switch path and then generates the first open signal SE1 and (or generates and second open to first choice turning circuit 141
Open signal SE2 to second and select turning circuit 142), it has and simultaneously turns on second switch path to avoid first switch path
The case where occur, but the present invention is not limited thereto.
In one embodiment, processing unit 150 can when detecting the second battery unit 122 and being separated with electronic device 100,
The first open signal SE1 is generated to first choice turning circuit 141, so that electronic device 100 can pass through the first battery unit
121 electric power maintains running.
In one embodiment, whether electronic device 100 can also detect the second battery unit 122 using processing unit 150
It is detached from electronic device 100, and when detecting the second battery unit 122 and separating with electronic device 100, processing unit 150 can
The first open signal SE1 is generated to first choice turning circuit 141 first switch path is connected, so that the first battery unit
121 can be electrically connected to power transmission end 110.
In some embodiments, the second battery unit 122 has status foot position Pi (ID pin), and when the second battery unit
122 when being incorporated into electronic device 100, and processing unit 150 can receive to the second battery unit 122 and be passed via its status foot position Pi
The status signal Si sent.Therefore, processing unit 150 can be according to whether the status signal Si for receiving the second battery unit 122 comes
Judge whether the second battery unit 122 separates with electronic device 100.
In one embodiment, processing unit 150 includes first control circuit 151, second control circuit 152 and processing module
153.First control circuit 151 is coupled to first choice turning circuit 141 and the second battery unit 122, second control circuit 152
Be coupled to the second selection turning circuit 142, and processing module 153 be coupled to first control circuit 151, second control circuit 152,
First battery unit 121 and the second battery unit 122.
First control circuit 151 to according to the status signal Si of first control signal Sc1 and the second battery unit 122 come
The first open signal SE1 or the second shutdown signal SD2 are generated to first choice turning circuit 141.In one embodiment, the first control
Circuit 151 processed may include two transistor M3, M4, six resistance R1-R6 and a capacitor C1.In this, transistor M3, M4 can be adopted
It is realized with N-type transistor, but the present invention is not limited thereto.
The first end of transistor M3, the first end of transistor M4, the first end of resistance R3 and capacitor C1 first end coupling
It is connected to the control terminal of the switch element M1 in first choice turning circuit 141.The second of the second end of transistor M3, transistor M4
The second end at end, the second end of resistance R2 and resistance R6 is coupled to ground voltage GND.The control terminal of transistor M3 is coupled to resistance
The second end of R1 and the first end of resistance R2.The control terminal of transistor M4 is coupled to the second end and resistance R6 of resistance R5
First end.The second end of capacitor C1 and the second end of resistance R3 are coupled to the first end of switch element M1.The first of resistance R4
End is coupled to supply voltage VDD.The second end of resistance R4 and the first end of resistance R5 are coupled to the body of the second battery unit 122
Sub-signal.The first end of resistance R1 is coupled to first control signal Sc1.
In this, when the control terminal of transistor M4 can not receive the status signal Si of the second battery unit 122, such as second
When battery unit 122 is detached from electronic device 100, transistor M4 conducting, and the first open signal SE1 is generated extremely in its first end
The control terminal of switch element M1, to cause the first battery unit 121 that can electrically connect via the first switch path of switch element M1
It ties to power transmission end 110.Conversely, the control terminal as transistor M4 can receive the status signal Si to the second battery unit 122
When, transistor M4 maintains cut-off.Also, the output of first control circuit 151 at this time switchs member into first choice turning circuit 141
The signal end of the control terminal of part M1 is determined depending on first control signal Sc1.For example, when first control signal Sc1 is conducting
When level, transistor M3 is connected and generates the control terminal of the first open signal SE1 to switch element M1 in its first end, to cause
First battery unit 121 can be electrically connected to power transmission end 110 via the first switch path of transistor M1.And when the first control
When signal Sc1 processed is cut-off level, transistor M3 cut-off, and the second shutdown signal SD2 is generated extremely in the first end of transistor M3
The control terminal of switch element M1, to cause switch element M1 to disconnect first switch path.
Second control circuit 152 is closed to generate the second open signal SE2 or first according to second control signal Sc2
Signal SD1 is to the second selection turning circuit 142.In one embodiment, second control circuit 152 include a transistor M5 and
Three resistance R7-R9.In this, N-type transistor is can be used to realize in transistor M5, but the present invention is not limited thereto.
The first end of transistor M5 and the second end of resistance R9 are coupled to the switch element in the second selection turning circuit 142
The control terminal of M2.The second end of transistor M5 and the second end of resistance R8 are coupled to ground voltage GND.The control terminal of transistor M5
It is coupled to the second end of resistance R7 and the first end of resistance R8.The first end of resistance R9 is coupled to the first of switch element M2
End.The first end of resistance R7 is coupled to second control signal Sc2.
In this, when second control signal Sc2 is conducting level, transistor M5 is connected and generates second in its first end and open
The control terminal of signal SE2 to switch element M2 is opened, to cause the second battery unit 122 can be via the second switch of switch element M2
Path is electrically connected to power transmission end 110.And when second control signal Sc2 is cut-off level, transistor M5 cut-off, and in
The first end of transistor M5 generates the control terminal of the first shutdown signal SD1 to switch element M2, to cause switch element M2 to disconnect
Second switch path.
Processing module 153 is to detect the first battery unit 121 and the second battery unit 122.Processing module 153 can basis
The state of first battery unit 121 and the state of the second battery unit 122 generate first control signal Sc1 and second control signal
Sc2.For example, when the voltage of the first battery unit 121 is higher by first voltage threshold values than the voltage of the second battery unit 122
When, processing module 153 can produce the first control signal Sc1 with conducting level and the second control letter with cut-off level
Number Sc2.In another example when the second battery unit 122 voltage than the first battery unit 121 voltage than the first battery unit 121
Voltage when being higher by second voltage threshold values, processing module 153 can produce first control signal Sc1 and tool with cut-off level
There is the second control signal Sc2 of conducting level.
In one embodiment, electronic device 100 also selects turning circuit 143 comprising third.Third selects turning circuit 143
It is coupled to power transmission end 110, second and selects turning circuit 142, the second voltage-controlled turning circuit 132 and processing unit 150.The
Three selection turning circuits 143 have third switching pathway, and third switching pathway is located at the first of third selection turning circuit 143
Between end and second end.Third selection turning circuit 143 is controlled by processing unit 150, and can be defeated according to 150 institute of processing unit
Whether signal deciding out is connected third switching pathway.In this, the first end of third selection turning circuit 143 is coupled to the second choosing
Select the first end of turning circuit 142 and the second end of the second voltage-controlled turning circuit 132, third selects the of turning circuit 143
Two ends are coupled to power transmission end 110, and the control terminal of third selection turning circuit 143 is coupled to processing unit 150.Change speech
It, third switching pathway is between the second transmission path and power transmission end 110.
In one embodiment, third selection turning circuit 143 can be made of one or more switch elements M6.Hereinafter, being
It is illustrated so that the third composed by a switch element M3 selects turning circuit 143 as an example, but this is not limited to
The present invention.
The first end of switch element M3 is coupled to the first end of switch element M2, and the second end of switch element M3 is coupled to electricity
Power transmission end 110, and the control terminal of switch element M1 is coupled to processing unit 150.In this, the third switching pathway is position
Between the first end and second end of switch element M3, and the control terminal of switch element M3 can be used to control third switching pathway
It opens or closes.
In one embodiment, processing unit 150 can correctly be incorporated into electronic device in detecting the second battery unit 122
The control terminal of switch element M3 for generating third open signal SE3 to third selection turning circuit 143 when 100 is opened third is connected
Path is closed, and generates third shutdown signal when detecting the second battery unit 122 and not correctly being incorporated into electronic device 100
SD3 disconnects third switching pathway to the control terminal of switch element M3.
In one embodiment, third selection turning circuit 143 also includes diode D3, and diode D3 is coupled to switch member
Between the first end and second end of part M3.In this, the anode of diode D3 is coupled to the second end of switch element M3, and diode
The cathode of D3 is coupled to the first end of switch element M3.In this, diode D3 is one-way conduction circuit, therefore diode D3 only allows
Electric current flows to its cathode from its anode.In some embodiments, diode D3 can be produced in circuit manufacture procedure by switch element M3
Raw parasitic diode.In this, switch element M3 can be realized using p-type transistor, but the present invention is not limited only to this, switch
Element M3 can also be realized with N-type transistor, transmission gate etc..
In one embodiment, processing unit 150 also includes third control circuit 154.Third control circuit 154 is to basis
Third controls signal Sc3 to generate third open signal SE3 or third shutdown signal SD3 to third and select turning circuit 143.
In one embodiment, third control circuit 154 may include a transistor M7, three resistance R10-R12 and electricity
Hold C2.In this, N-type transistor is can be used to realize in transistor M7, but the present invention is not limited thereto.
The first end of the first end of transistor M7, the first end of resistance R12 and capacitor C2 is coupled to third selection conducting
The control terminal of switch element M6 in circuit 143.The second end of transistor M7 and the second end of resistance R11 are coupled to ground voltage
GND.The control terminal of transistor M7 is coupled to the first end of resistance R11 and the second end of resistance R10.The second end of capacitor C2 with
And the second end of resistance R12 is coupled to the first end of switch element M3.The first end of resistance R10 is coupled to third control signal
Sc3。
In this, when third control signal Sc3 is conducting level, transistor M7 is connected and generates third in its first end and open
The control terminal of signal SE3 to switch element M6 is opened, to cause second switch path that can be electrically connected to power transmission end 110.And
When third control signal Sc3 is cut-off level, transistor M7 cut-off and generate third shutdown signal SD3 to opening in its first end
The control terminal of element M3 is closed, is connected with causing switch element M3 to disconnect the electrical property between second switch path and power transmission end 110
Knot.
In one embodiment, the processing module 153 in processing unit 150 can also be according to the state of the second battery unit 122
It generates third and controls signal Sc3.It for example, is correctly to be incorporated into electricity when processing module 153 detects the second battery unit 122
When sub-device 100, processing module 153 can produce the third control signal Sc3 with conducting level.In another example working as processing module
153 detect the second battery unit 122 when not being incorporated into electronic device 100 correctly, and processing module 153 then can produce to have and cut
Only the third of level controls signal Sc3.
In conclusion the electronic device and its charging method and charging method of the embodiment of the present invention, can pass through two selections
Turning circuit controls one of specified person in two battery units and discharges and charge, and can promote the use effect of two battery units
Rate, and also make this two battery unit that can be parallel to power transmission end by two voltage-controlled turning circuits and discharge, to ensure
Selection turning circuit still has battery unit can be via voltage-controlled when switching over or having a certain battery unit to be detached from electronic device
Turning circuit electric discharge, and then can also maintain the system stability of electronic device.In addition, the electronic device of the embodiment of the present invention and its
Charging method and charging method can make the volume of electronic device be subtracted using two battery units with identical capacity
Contracting.
Although technology contents of the invention have been disclosed above in the preferred embodiment, however, it is not to limit the invention,
It is any to be familiar with this those skilled in the art, do not depart from spirit of the invention make it is a little change and retouch, should all be covered by of the invention
In scope, therefore protection scope of the present invention should be defined by the scope of the appended claims.
Claims (22)
1. a kind of electronic device, characterized by comprising:
One power transmission end；
One first battery unit；
One second battery unit；
One first voltage-controlled turning circuit is coupled between first battery unit and the power transmission end, in the first battery list
When the voltage of member is higher than the voltage at the power transmission end, which is electrically connected to first battery unit
The power transmission end；
One first choice turning circuit is coupled between first battery unit and the power transmission end, is opened according to one first
First battery unit is electrically connected to the power transmission end by signal；
One second voltage-controlled turning circuit is coupled between second battery unit and the power transmission end, in the second battery list
When the voltage of member is higher than the voltage at the power transmission end, which is electrically connected to second battery unit
The power transmission end；
One second selection turning circuit, is coupled between second battery unit and the power transmission end, opens according to one second
Second battery unit is electrically connected to the power transmission end by signal；And
One processing unit, detect first battery unit and second battery unit with selectivity generate first open signal with
Second open signal.
2. electronic device as described in claim 1, which is characterized in that the processing unit is big in the voltage of first battery unit
In or equal to second battery unit voltage when generate first open signal so that first battery unit via this first
Selection turning circuit be discharged to the power transmission end and the processing unit in second battery unit voltage be greater than this first
Second open signal is generated when the voltage of battery unit, so that second battery unit is put via the second selection turning circuit
Electricity is to the power transmission end.
3. electronic device as claimed in claim 2, which is characterized in that the processing unit is gone back when generating first open signal
One first shutdown signal is generated to the second selection turning circuit, so that the second selection turning circuit disconnects the second battery list
Electrical connection and the processing unit also generation one the when generating second open signal between member and the power transmission end
Two shutdown signals are to the first choice turning circuit, so that the first choice turning circuit disconnects first battery unit and the electricity
Electrical connection between power transmission end.
4. electronic device as claimed in claim 2, which is characterized in that the processing unit is in the voltage ratio of first battery unit
First open signal is generated when the high first voltage threshold values of the voltage of second battery unit, and in second battery unit
Second open signal is generated when higher than the voltage of first battery unit second voltage threshold values of voltage.
5. electronic device as claimed in claim 2, which is characterized in that the processing unit is also in the voltage of first battery unit
An alarm signal is generated when down to a predeterminated voltage, wherein the predeterminated voltage is greater than the minimum voltage of second battery unit.
6. electronic device as described in claim 1, which is characterized in that basis should after receiving a charging signals for the processing unit
The electricity of the electricity of first battery unit and second battery unit generates first open signal or second open signal.
7. electronic device as claimed in claim 6, which is characterized in that when the electricity and second battery of first battery unit
The electricity of unit is smaller than an electricity threshold values and when the processing unit receives the charging signals, and the processing unit is according to first electricity
The electricity of pool unit, the electricity of second battery unit and a set electricity are poor, alternately generate first open signal and are somebody's turn to do
Second open signal, so that first battery unit and second battery unit alternately receive what the power transmission end was transmitted
One external power.
8. electronic device as claimed in claim 7, which is characterized in that the processing unit is alternately generated with an established rule should
First open signal and second open signal, and the established rule is to be somebody's turn to do when the electricity of first battery unit is less than or equal to
First open signal is generated when the electricity of the second battery unit so that first battery unit carries out charging until first electricity
The electricity of pool unit is poor higher than the electricity of second battery unit set electricity, in the electricity of first battery unit
Second open signal is generated so that second battery unit when set electricity is poor higher than the electricity of second battery unit
Charging is carried out until the electricity of second battery unit is equal to the electricity of first battery unit, in first battery unit
The electricity and second battery unit the electricity be higher than the electricity threshold values when complete first battery unit and this second electricity
The charging procedure of pool unit.
9. electronic device as described in claim 1, which is characterized in that the first voltage-controlled turning circuit be allow electric current from this
One battery unit flows to the unidirectional current circuit at the power transmission end, and the second voltage-controlled turning circuit be allow electric current from this
Two battery units flow to the unidirectional current circuit at the power transmission end.
10. electronic device as claimed in any one of claims 1-9 wherein, which is characterized in that first battery unit is built into this
Electronic device, second battery unit are separably incorporated into the electronic device.
11. electronic device as claimed in claim 10, which is characterized in that the processing unit is in detecting second battery unit
When separating with the electronic device, first open signal is generated.
12. electronic device as claimed in claim 10, which is characterized in that also include:
One third selects turning circuit, is coupled between the second voltage-controlled turning circuit and the power transmission end and is coupled in this
Second selection turning circuit and the power transmission end between, according to a third open signal be connected the second voltage-controlled turning circuit with
The electrical connection between electrical connection and the second selection turning circuit and the power transmission end between the power transmission end；And
Wherein, which generates the third and opens letter when detecting second battery unit and being incorporated into the electronic device
Number.
13. a kind of charging method, characterized by comprising:
It should according to the voltage turn-on at the one first voltage-controlled path both ends between one first battery unit and a power transmission end
The power transmission end is given to cause first battery unit to discharge via the first voltage-controlled path in first voltage-controlled path；
It should according to the voltage turn-on at the one second voltage-controlled path both ends between one second battery unit and the power transmission end
The power transmission end is given to cause second battery unit to discharge via the second voltage-controlled path in second voltage-controlled path；
Detect first battery unit and second battery unit；
When the voltage for detecting first battery unit is greater than or equal to the voltage of second battery unit, conducting be located at this
A first switch path and disconnection between one battery unit and the power transmission end are located at second battery unit and the electricity
The electricity is given to cause first battery unit to discharge via the first switch path in a second switch path between power transmission end
Power transmission end；And
When the voltage for detecting second battery unit is greater than the voltage of first battery unit, the second switch path is connected
And the first switch path is disconnected, gives the power transmission to cause second battery unit to discharge via the second switch path
End.
14. charging method as claimed in claim 13, which is characterized in that cause first battery unit via the first switch
The step of path is discharged to the power transmission end is higher than the voltage of second battery unit by one in the voltage of first battery unit
It is executed when first voltage threshold values, and second battery unit is caused to discharge via the second switch path to the power transmission end
Step executes when voltage higher than the voltage of first battery unit second voltage threshold values of second battery unit.
15. charging method as claimed in claim 13, which is characterized in that also include:
An alarm signal is generated when the voltage of first battery unit is down to a predeterminated voltage, wherein be greater than should for the predeterminated voltage
The minimum voltage of second battery unit.
16. charging method as claimed in claim 13, which is characterized in that the first voltage-controlled path be allow electric current from this first
Battery unit flows to the unidirectional current path at the power transmission end, and the second voltage-controlled path is to allow electric current from second battery
Unit flows to the unidirectional current path at the power transmission end.
17. charging method as claimed in claim 13, which is characterized in that first battery unit is built into an electronic device,
Two battery unit is separably incorporated into the electronic device, which also includes:
When detecting second battery unit and separating with the electronic device, the first switch path is connected.
18. charging method as claimed in claim 13, which is characterized in that first battery unit is built into an electronic device,
Two battery unit is separably incorporated into the electronic device, which also includes:
When detecting second battery unit and being incorporated into the electronic device, leads to and be located at the second switch path and the power transmission
A third switching pathway between end, to cause second battery unit via the second switch path and the third switching pathway
It discharges and gives the power transmission end；And
When detecting second battery unit and separating with the electronic device, the third switching pathway is disconnected.
19. a kind of charging method, characterized by comprising:
Detect one first battery unit and one second battery unit of an electronic device；
When the electricity of first battery unit is not higher than the one set electricity difference of electricity of second battery unit, conducting is located at should
A first switch path and closing between first battery unit and a power transmission end are located at second battery unit and the electricity
A second switch path between power transmission end, to cause first battery unit to receive the electric power via the first switch path
An external power that transmission end is transmitted until the electricity of first battery unit be higher than second battery unit electricity this both
It is poor to determine electricity；And
When the electricity of first battery unit is higher than the electricity of the second battery unit set electricity difference, this is connected and second opens
It closes path and disconnects the first switch path, passed with causing second battery unit to receive the electric power via the second switch path
The external power that defeated end is transmitted is until the electricity of second battery unit is equal to the electricity of first battery unit.
20. charging method as claimed in claim 19, which is characterized in that in the electricity for detecting first battery unit and be somebody's turn to do
When the electricity of second battery unit is all higher than an electricity threshold values, the second switch path and the first switch path are disconnected.
21. charging method as claimed in claim 20, which is characterized in that also include:
When the electricity that the electricity of first battery unit is greater than the electricity threshold values and second battery unit is less than the electricity threshold values
When, the second switch path is connected and disconnects the first switch path, to cause second battery unit via the second switch
Path receives the external power that the power transmission end is transmitted.
22. charging method as claimed in claim 20, which is characterized in that also include:
When the electricity that the electricity of first battery unit is less than the electricity threshold values and second battery unit is greater than the electricity threshold values
When, the first switch path is connected and closes the second switch path, to cause first battery unit via the first switch
Path receives the external power that the power transmission end is transmitted.
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| CN104333051A (en) * | 2013-07-22 | 2015-02-04 | 上海斐讯数据通信技术有限公司 | Mobile terminal and power supply method thereof |
| CN104852439A (en) * | 2015-06-10 | 2015-08-19 | 联想(北京)有限公司 | Electronic equipment and double-battery charging and discharging switching method |
| CN204905937U (en) * | 2015-08-14 | 2015-12-23 | 陈彩凤 | Double-battery power supply circuit for intelligent watch and intelligent watch |
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Application publication date: 20190301 |