CN206547012U - Charging circuit and electronic equipment - Google Patents
Charging circuit and electronic equipment Download PDFInfo
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- CN206547012U CN206547012U CN201720127710.XU CN201720127710U CN206547012U CN 206547012 U CN206547012 U CN 206547012U CN 201720127710 U CN201720127710 U CN 201720127710U CN 206547012 U CN206547012 U CN 206547012U
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Abstract
The utility model is related to charging technique field, there is provided a kind of charging circuit and electronic equipment, a kind of charging circuit that the utility model is provided, applied to electronic equipment, electrically connected with electronic equipment with electric loading, charging circuit includes charging chip, sample circuit, main control chip, single-way switch circuit and battery, and power supply is electrically connected with charging chip.The charged chip of power supply is electricity consumption load supplying and is battery charging, when battery is fully charged, main control chip control single-way switch circuit shut-off, now charging chip is continuously electricity consumption load supplying, after power supply is removed, battery is electricity consumption load supplying, when the not enough power supply of battery, and main control chip control single-way switch circuit is turned on again.A kind of charging circuit that the utility model is provided, can be prevented effectively from the frequent discharge and recharge of battery, while electronic equipment normal work is ensured, improve the overall working life of electronic equipment.
Description
Technical field
The utility model is related to charging technique field, in particular to a kind of charging circuit and electronic equipment.
Background technology
Common electronic equipment（Such as portable phone, notebook computer）In be all provided with the job family of promising electronic equipment
System provides the battery of power supply, and the battery charger charged for battery.Existing battery charger includes charging
Chip and battery, charging chip control battery charging, after battery is fully charged, charging chip can disconnect charging circuit and power supply
Connection, powered thereby using battery for work system, until battery electric quantity loss is to after limiting value, just restarts and fill
Electricity, this charging modes can cause the frequent discharge and recharge of battery, reduce the service life of battery.
Utility model content
The purpose of this utility model is to provide a kind of charging circuit and electronic equipment, to improve above mentioned problem.
What the utility model was realized in：
A kind of charging circuit, applied to electronic equipment, electronic equipment includes using electric loading, and charging circuit includes charging chip
And battery, charging chip is used for and power electric connection, and is electricity consumption load supplying and is that battery is powered, and charging circuit is also wrapped
Include：Sample circuit, single-way switch circuit and main control chip, charging chip, sample circuit, single-way switch circuit and battery are electric successively
Connect, and sample circuit, single-way switch circuit and battery are electrically connected with main control chip, sample circuit with electric loading with being electrically connected
Connect；Sample circuit is used to sample to obtain sample rate current to the input current of battery, and sample rate current is fed back into master control core
Piece；Single-way switch circuit is used to control the electrical connection on or off between charging chip and battery；Main control chip is used for basis
The current control single-way switch circuit of sample circuit ends the electrical connection between charging chip and battery, and according to battery electricity
Voltage-controlled single-way switch circuit processed turns on the electrical connection between charging chip and battery.
Further, the sample circuit includes the first sampling resistor and the second sampling resistor, the charging chip and institute
State the first end electrical connection of the first sampling resistor, the second end of first sampling resistor respectively with the use electric loading and described
The first end electrical connection of second sampling resistor, the second end of second sampling resistor is electrically connected with the single-way switch circuit.
Further, the single-way switch circuit is power switch, the first contact of the power switch and described second
The second end electrical connection of sampling resistor, the second contact of the power switch is electrically connected with the battery, and the power switch
Control end electrically connected with the main control chip.
Further, the power switch is metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor and the second of second sampling resistor
End electrical connection, the grid of the metal-oxide-semiconductor is electrically connected with the main control chip, and the drain electrode of the metal-oxide-semiconductor is electrically connected with the battery.
Further, the power switch also include the first parasitic diode, the anode of first parasitic diode with
The drain electrode electrical connection of the metal-oxide-semiconductor, the negative electrode of first parasitic diode is electrically connected with the source electrode of the metal-oxide-semiconductor.
Further, the charging circuit also includes booster circuit, and the power switch is metal-oxide-semiconductor, the leakage of the metal-oxide-semiconductor
Pole is electrically connected with the second end of second sampling resistor, and the grid of the main control chip, booster circuit and the metal-oxide-semiconductor is successively
Electrical connection, the source electrode of the metal-oxide-semiconductor is electrically connected with the battery.
Further, the power switch also include the second parasitic diode, the anode of second parasitic diode with
The source electrode electrical connection of the metal-oxide-semiconductor, the negative electrode of second parasitic diode is electrically connected with the drain electrode of the metal-oxide-semiconductor.
Further, the main control chip is configured as detecting the electric current or battery electricity of second sampling resistor
Pressure, when the electric current for detecting second sampling resistor is less than or equal to rated value, controls the single-way switch circuit by institute
State the electrical connection cut-off between charging chip and the battery；When detecting the cell voltage less than or equal to limits value,
The single-way switch circuit is controlled to turn on the electrical connection between the charging chip and the battery.
A kind of electronic equipment, including with electric loading and above-mentioned charging circuit, the charging circuit includes charging chip
And battery, charging chip is used for and power electric connection, and is electricity consumption load supplying and is that battery is powered, and charging circuit is also wrapped
Include：Sample circuit, single-way switch circuit and main control chip, charging chip, sample circuit, single-way switch circuit and battery are electric successively
Connect, and sample circuit, single-way switch circuit and battery are electrically connected with main control chip, sample circuit with electric loading with being electrically connected
Connect；Sample circuit is used to sample to obtain sample rate current to the input current of battery, and sample rate current is fed back into master control core
Piece；Single-way switch circuit is used to control the electrical connection on or off between charging chip and battery；Main control chip is used for basis
The current control single-way switch circuit of sample circuit ends the electrical connection between charging chip and battery, and according to battery electricity
Voltage-controlled single-way switch circuit processed turns on the electrical connection between charging chip and battery, described to be electrically connected with electric loading with main control chip
Connect.
Further, the electronic equipment is unmanned plane or moving camera.
Compared with the prior art, the utility model has the advantages that：The utility model provide a kind of charging circuit and
Electronic equipment, single-way switch circuit is turned off, now charging chip is continuously under the control of main control chip when battery is fully charged
Electricity consumption load supplying；When power supply is removed, battery is electricity consumption load supplying；When the not enough power supply of battery, main control chip control is single
Turned on again to on-off circuit.A kind of charging circuit that the utility model is provided, can be prevented effectively from the frequent discharge and recharge of battery,
While ensureing the normal work of electronic equipment, the overall working life of electronic equipment is improved.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Coordinate appended accompanying drawing, be described in detail below.
Brief description of the drawings
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be arranged and designed with a variety of configurations.Therefore, below to attached
The detailed description of the embodiment of the present utility model provided in figure is not intended to limit claimed scope of the present utility model,
But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the model of the utility model protection
Enclose.
Fig. 1 shows the annexation figure of the electronic installation that the utility model first embodiment provided and power supply.
Fig. 2 shows the structured flowchart for the electronic equipment that the utility model first embodiment is provided.
Fig. 3 shows the circuit diagram for the electronic equipment that the utility model first embodiment is provided.
Fig. 4 shows the circuit diagram for the electronic equipment that the utility model second embodiment is provided.
Fig. 5 shows the circuit diagram for the electronic equipment that the utility model 3rd embodiment is provided.
Icon：100- electronic equipments；200- electronic equipments；300- electronic equipments；110- charging circuits；210- charging electricity
Road；111- charging chips；113- sample circuits；115- main control chips；117- single-way switch circuits；1171- power switch；118-
Battery；119- booster circuits；130- power supplys；150- electric loadings；151- cameras；153- display devices；155- communication equipments.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole realities
Apply example.The component for the utility model embodiment being generally described and illustrated herein in the accompanying drawings can be come with a variety of configurations
Arrangement and design.Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit
Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term is " even
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool is connected or electrically connected；Can be joined directly together, can also be indirectly connected to by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality with concrete condition
Concrete meaning in type.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
Below in conjunction with the accompanying drawings, some embodiments of the present utility model are elaborated.In the case where not conflicting, under
Feature in the embodiment and embodiment stated can be mutually combined.
First embodiment
The electronic equipment 100 provided incorporated by reference to reference picture 1, the utility model first embodiment, it includes charging circuit 110
With with electric loading 150.Charging circuit 110 includes charging chip 111, sample circuit 113, main control chip 115, single-way switch circuit
117 and battery 118, charging chip 111, sample circuit 113, single-way switch circuit 117 and battery 118 are sequentially connected electrically, and are adopted
Sample circuit 113, single-way switch circuit 117 and battery 118 are electrically connected with main control chip 115, with electric loading 150 and sample circuit
113 electrical connections.Charging chip 111 is electrically connected with power supply 130, as a preferred embodiment, implementing in the utility model
In example, power supply 130 is dc source of the outside offer such as 220V AC powers or external charging treasured etc..
Charging chip 111 is used to outside 220V AC powers being converted to direct current, or external charging treasured etc. is provided
Dc source carry out voltage stabilizing, be that battery 118 charges and is to be powered with electric loading 150, charging chip 111 is additionally operable in battery
The temperature of battery 118 is detected in 118 charging processes, if the temperature of battery 118 is too high, the positive and negative of battery 118 is particularly likely that
Short circuit is there occurs between pole, now charging chip 111 opens short-circuit protection function, prevent main control chip 115 or with electric loading 150
Burn.
Charging chip 111 is additionally operable to, in 118 charging complete of battery, be continuously and powered with electric loading 150, be effectively retained or
Save the electricity of battery 118, it is to avoid the frequent discharge and recharge of battery 118.
Sample circuit 113 is used to sample to the output current of charging chip 111, and sample rate current is fed back into charging
Chip 111, charging chip 111 is according to the size of the big minor adjustment output current of feedback current, it is ensured that normal with electric loading 150
Work.
Sample circuit 113 is additionally operable to sample to the input current of battery 118, and sample rate current is fed back into master control core
Piece 115, main control chip 115 controls single-way switch circuit 117 by charging chip 111 and battery 118 according to the size of feedback current
Between electrical connection cut-off.
Refer to Fig. 2, sample circuit 113 includes the first sampling resistor R1 and the second sampling resistor R2, charging chip 111 with
First sampling resistor R1 first end a1 electrical connections, the first sampling resistor R1 the second end b1 respectively with electric loading 150 and the
Two sampling resistor R2 first end a2 electrical connections, the second sampling resistor R2 the second end b2 is electrically connected with single-way switch circuit 117.
In the present embodiment, the first sampling resistor R1 is used to sample to the output current of charging chip 111, and will adopt
Sample current feedback is to charging chip 111, and charging chip 111 is according to the big output current of minor adjustment charging chip 111 of feedback current
Size, it is ensured that with the normal work of electric loading 150.
In the present embodiment, the second sampling resistor R2 is used to sample to the input current of battery 118, and will sampling electricity
Stream feeds back to main control chip 115, and main control chip 115 controls single-way switch circuit 117 to charge core according to the size of feedback current
Electrical connection cut-off between piece 111 and battery 118.
Main control chip 115 is used for the sample rate current for detecting the second sampling resistor R2, when the second sampling resistor R2 sampling electricity
When stream is less than or equal to charging current rated value, represent that battery 118 fills with electricity, now main control chip 115, which is turned off, unidirectionally opens
Powered-down road 117, it is to avoid the overcharge of battery 118.
In the present embodiment, charging current rated value refers to setting the 1/10 of charging current, be less than when charging current or
During equal to set charging current 1/10, the battery core saturation of battery 118 is, it is necessary to stop charging.
Main control chip 115 is additionally operable to detect the voltage of battery 118, when the voltage of battery 118 is limited less than or equal to voltage
During value, the not enough power supply of battery 118 is represented, the now control of main control chip 115 opens single-way switch circuit 117 by charging chip 111
Electrical connection conducting between battery 118, it is to avoid the overdischarge of battery 118.
In the present embodiment, voltage limit is 3V, and when the voltage of battery 118 is less than or equal to 3V, battery 118 is complete
Electric discharge when the voltage that main control chip 115 detects battery 118 increases suddenly, is judged as battery, it is necessary to carry out restorative charging
118 are charged normal.
It should be understood that because the main control chip 115 can detect the sample rate current of the second sampling resistor R2, also
The voltage of battery 118 can be detected, therefore, a kind of embodiment of the application, it is determined that the second sampling resistor R2 sample rate current is small
Control disconnects the single-way switch circuit in the case of charging current rated value and the cell voltage reach saturation value
117, disconnect the electrical connection between charging chip 111 and battery 118, it is to avoid the overcharge of battery 118.
Single-way switch circuit 117 is used under the control of main control chip 115, on or off charging chip 111 and electricity
Electrical connection between pond 118, in the present embodiment, single-way switch circuit 117 are power switch 1171, the of power switch 1171
One contact s1 is electrically connected with the second sampling resistor R2 the second end b2, the second contact s2 and the electricity of battery 118 of power switch 1171
Connection, the control end c of power switch 1171 is electrically connected with main control chip 115.
Fig. 3 is refer to, in the present embodiment, power switch 1171 is preferably metal-oxide-semiconductor Q1 and the first parasitic diode D1,
Metal-oxide-semiconductor Q1 drain D is electrically connected as the second contact s2 of power switch 1171 with battery 118, metal-oxide-semiconductor Q1 source S conduct
The the first contact s1 and the second sampling resistor R2 of power switch 1171 the second end b2 are electrically connected, and metal-oxide-semiconductor Q1 grid G is used as work(
The control end of rate switch 1171 is electrically connected with main control chip 115, the first parasitic diode D1 anode and metal-oxide-semiconductor Q1 drain D
Electrical connection, the first parasitic diode D1 negative electrode is electrically connected with metal-oxide-semiconductor Q1 source S.Metal-oxide-semiconductor Q1 is used in main control chip 115
Control under, turn off, turned on again when the not enough power supply of battery 118, it is to avoid the mistake of battery 118 when battery 118 is fully charged
Fill or cross and put.
In the present embodiment, the first parasitic diode D1 is used to work as has instantaneous large-current, and charging core with electric loading 150
When the output current of piece 111 is less than this instantaneous large-current, the electricity of battery 118 is supplemented to electric loading 150, so that electricity consumption
Load 150 normal works.
When battery 118 is used for the input of no external power source, to be powered with electric loading 150.
The operation principle for the electronic equipment 100 that the utility model first embodiment is provided is：Charging chip 111 is by power supply
130 carry out voltage stabilizing, are to be powered with electric loading 150 through the first sampling resistor R1, and sampled circuit 113 and power switch 1171
Charged for battery 118；
Charging chip 111 is according to the big output current of minor adjustment charging chip 111 of the first sampling resistor R1 feedback current
Size, it is ensured that with the normal work of electric loading 150；
Main control chip 115 detects the second sampling resistor R2 sample rate current, when the second sampling resistor R2 sample rate current is small
When charging current rated value, the switch-off power of main control chip 115 switch 1171, charging chip 111 stops being battery 118
Charging, but be continuously and powered with electric loading 150；
When having instantaneous large-current with electric loading 150, the first parasitic diode D1 supplements the electricity of battery 118 to use
Electric loading 150；
When power supply 130 is removed, charging chip 111 stops being powered with electric loading 150, is to use electric loading 150 by battery 118
Power supply, the detection voltage of battery 118 of main control chip 115, when the voltage of battery 118 is less than or equal to voltage limit, battery 118 stops
It is only to be powered with electric loading 150；
When power supply 130 is electrically connected again, conducting power switch 1171 again of main control chip 115, charging chip 111 is again
Battery 118 charges.
Second embodiment
It refer to Fig. 4, the electronic equipment 200 that the utility model second embodiment is provided, it includes charging circuit 210 and used
Electric loading 150.Charging circuit 210 include charging chip 111, sample circuit 113, main control chip 115, single-way switch circuit 117,
Battery 118 and booster circuit 119.Charging chip 111, sample circuit 113, single-way switch circuit 117 and battery 118 are electrically connected successively
Connect, and sample circuit 113, battery 118 and booster circuit 119 are electrically connected with main control chip 115, single-way switch circuit 117 with
Booster circuit 119 is electrically connected, and is electrically connected with electric loading 150 with sample circuit 113, and charging chip 111 is electrically connected with power supply 130.
The electronic equipment 200 that the present embodiment is provided, except the power switch 1171 of charging circuit 210 is preferably that metal-oxide-semiconductor Q2 and second is posted
Raw diode D2, and add beyond booster circuit 119, the electronic equipment that other circuit connections are provided with first embodiment
100 is identical.
In the present embodiment, power switch 1171 is preferably metal-oxide-semiconductor Q2 and the second parasitic diode D2, metal-oxide-semiconductor Q2 leakage
Pole D is electrically connected as the first contact s1 and the second sampling resistor R2 of power switch 1171 the second end b2, metal-oxide-semiconductor Q2 source electrode
S is electrically connected as the second contact s2 of power switch 1171 with battery 118, and metal-oxide-semiconductor Q2 grid G is used as power switch 1171
Control end, and the grid G of main control chip 115, booster circuit 119 and metal-oxide-semiconductor Q2 is sequentially connected electrically, the second parasitic diode D2's
Anode is electrically connected with metal-oxide-semiconductor Q2 source S, and the second parasitic diode D2 negative electrode is electrically connected with metal-oxide-semiconductor Q2 drain D.Metal-oxide-semiconductor
Q2 is used under the control of main control chip 115, when the second sampling resistor R2 sample rate current is specified less than or equal to charging current
Turned off during value, when battery 118 voltage be less than or equal to voltage limit when turn on again, it is to avoid battery 118 overcharge or
Cross and put.
In the present embodiment, booster circuit 119 is used to be boosted the input voltage of metal-oxide-semiconductor Q2 grid G, so as to protect
Card metal-oxide-semiconductor Q2 can be turned under the control of main control chip 115.
The operation principle for the electronic equipment 200 that the utility model second embodiment is provided is：Charging chip 111 is by power supply
130 carry out voltage stabilizing, to be powered with electric loading 150, and are charged for battery 118；Control of the power switch 1171 in main control chip 115
Under system, turned off when battery 118 is fully charged, now charging chip 111 is continuously is powered with electric loading 150, when with electric loading 150
During with instantaneous large-current, the second parasitic diode D2 supplements the electricity of battery 118 to electric loading 150；Power supply 130 is removed
When, battery 118 is to be powered with electric loading 150；When the not enough power supply of battery 118, the control power switch 1171 of main control chip 115
Again turn on, thus avoid overcharging or putting excessively for battery 118.
3rd embodiment
It refer to Fig. 5, the utility model 3rd embodiment provides a kind of electronic equipment 300, it includes the utility model the
The charging circuit 110 that one embodiment is provided, and also include using electric loading 150, it is electrically connected with electric loading 150 with charging circuit 110
Connect, the correlation function for realizing electronic equipment 300.Electrically connected with electric loading 150 with the first sampling resistor R1 the second end b1,
And electrically connected with main control chip 115.
In the present embodiment, included with electric loading 150 any in camera 151, display device 153 and communication equipment 155
One or more, camera 151, display device 153 and communication equipment 155 are sequentially connected electrically, and camera 151 and first is sampled
Resistance R1 the second end b1 electrical connections, and electrically connected with main control chip 115.Camera 151 is used to gather the institute of electronic equipment 300
External environmental information, display device 153 is used to show the collection result of camera 151, and communication equipment 155 is set for electronics
Standby 300 and other equipment（Such as PC, mobile phone, tablet personal computer）Communication, for example can be by the collection of camera 151
As a result transmit to PC, mobile phone, tablet personal computer etc..
In the present embodiment, electronic equipment 300 can be but not limited to unmanned plane, moving camera etc..
The operation principle for the electronic equipment 300 that the present embodiment is provided is：When power supply 130 is that electronic equipment 300 is powered, warp
Charging chip 111 charges to be powered with electric loading 150, and for battery 118, control of the power switch 1171 in main control chip 115
Under system, turned off when battery 118 is fully charged, now charging chip 111 is continuously is powered with electric loading 150, when with electric loading 150
During with instantaneous large-current, the first parasitic diode D1 supplements the electricity of battery 118 to electric loading 150, and power supply 130 is removed
When, battery 118 is powers with electric loading 150, when the not enough power supply of battery 118, the control power switch 1171 of main control chip 115
Again turn on, be always ensured that the shooting, display and communication function of electronic equipment 300.
In summary, a kind of charging circuit that the utility model is provided, applied to electronic equipment, electronic equipment includes electricity consumption
Load, charging circuit electrically connects with electric loading, charging circuit including charging chip, sample circuit, main control chip, metal-oxide-semiconductor and
Battery, power supply is electrically connected with charging chip, and it is electricity consumption load supplying that charged chip, which carries out voltage stabilizing, and is battery charging；
Metal-oxide-semiconductor is turned off under the control of main control chip when battery is fully charged, and now charging chip is continuously electricity consumption load supplying；When
When there is instantaneous large-current with electric loading, parasitic diode of the electricity of battery through metal-oxide-semiconductor is supplemented to using electric loading；Power supply is moved
Except when, battery be electricity consumption load supplying；When the not enough power supply of battery, main control chip control power switch is turned on again.This reality
With a kind of charging circuit of new offer, the frequent discharge and recharge of battery can be prevented effectively from, so as to improve the overall work of electronic equipment
Make the life-span.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of charging circuit, applied to electronic equipment, the electronic equipment includes using electric loading, and the charging circuit includes filling
Electrical chip and battery, the charging chip are used for and power electric connection, and are the electricity consumption load supplying and are the battery
Power supply, it is characterised in that the charging circuit also includes：Sample circuit, single-way switch circuit and main control chip, the charging core
Piece, sample circuit, single-way switch circuit and battery are sequentially connected electrically, and the sample circuit, single-way switch circuit and battery are equal
Electrically connected with the main control chip, the sample circuit is electrically connected with described with electric loading；
The sample circuit is used to sample to obtain sample rate current to the input current of the battery, by the sample rate current
Feed back to the main control chip；The single-way switch circuit is used to control the electrical connection between the charging chip and the battery
On or off；The main control chip fills for the single-way switch circuit according to the current control of the sample circuit by described
Electrical connection cut-off between electrical chip and the battery, and the single-way switch circuit is controlled by institute according to the cell voltage
State the electrical connection conducting between charging chip and the battery.
2. charging circuit as claimed in claim 1, it is characterised in that the sample circuit includes the first sampling resistor and second
Sampling resistor, the charging chip is electrically connected with the first end of first sampling resistor, and the second of first sampling resistor
End is electrically connected with described with electric loading with the first end of second sampling resistor respectively, the second end of second sampling resistor
Electrically connected with the single-way switch circuit.
3. charging circuit as claimed in claim 2, it is characterised in that the single-way switch circuit is power switch, the work(
Rate switch the first contact electrically connected with the second end of second sampling resistor, the second contact of the power switch with it is described
Battery is electrically connected, and the control end of the power switch is electrically connected with the main control chip.
4. charging circuit as claimed in claim 3, it is characterised in that the power switch is metal-oxide-semiconductor, the source of the metal-oxide-semiconductor
Pole is electrically connected with the second end of second sampling resistor, and the grid of the metal-oxide-semiconductor is electrically connected with the main control chip, described
The drain electrode of metal-oxide-semiconductor is electrically connected with the battery.
5. charging circuit as claimed in claim 4, it is characterised in that the power switch also includes the first parasitic diode,
The anode of first parasitic diode is electrically connected with the drain electrode of the metal-oxide-semiconductor, the negative electrode of first parasitic diode and institute
State the source electrode electrical connection of metal-oxide-semiconductor.
6. charging circuit as claimed in claim 3, it is characterised in that the charging circuit also includes booster circuit, the work(
Rate switch is metal-oxide-semiconductor, and the drain electrode of the metal-oxide-semiconductor is electrically connected with the second end of second sampling resistor, the main control chip, liter
The grid of volt circuit and the metal-oxide-semiconductor is sequentially connected electrically, and the source electrode of the metal-oxide-semiconductor is electrically connected with the battery.
7. charging circuit as claimed in claim 6, it is characterised in that the power switch also includes the second parasitic diode,
The anode of second parasitic diode is electrically connected with the source electrode of the metal-oxide-semiconductor, the negative electrode of second parasitic diode and institute
State the drain electrode electrical connection of metal-oxide-semiconductor.
8. charging circuit as claimed in claim 2, it is characterised in that the main control chip is configured as detection described second and adopted
The electric current of sample resistance or the cell voltage, when the electric current for detecting second sampling resistor is less than or equal to rated value,
The single-way switch circuit is controlled to end the electrical connection between the charging chip and the battery；When detecting the battery
When voltage is less than or equal to limits value, the single-way switch circuit is controlled by being electrically connected between the charging chip and the battery
Connect conducting.
9. a kind of electronic equipment, it is characterised in that including electric with the charging described in electric loading and claim any one of 1-8
Road, the use electric loading is electrically connected with the main control chip.
10. electronic equipment as claimed in claim 9, it is characterised in that the electronic equipment is unmanned plane or moving camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127710.XU CN206547012U (en) | 2017-02-13 | 2017-02-13 | Charging circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720127710.XU CN206547012U (en) | 2017-02-13 | 2017-02-13 | Charging circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206547012U true CN206547012U (en) | 2017-10-10 |
Family
ID=59993246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720127710.XU Active CN206547012U (en) | 2017-02-13 | 2017-02-13 | Charging circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206547012U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464672A (en) * | 2019-01-18 | 2020-07-28 | 青岛海信移动通信技术股份有限公司 | Electronic equipment and charging method thereof |
| CN111884303A (en) * | 2020-08-19 | 2020-11-03 | 深圳市爱都科技有限公司 | Charging control circuit, charging control method and electronic device |
| WO2022022436A1 (en) * | 2020-07-31 | 2022-02-03 | 华为技术有限公司 | Charging method and electronic device |
| CN114268137A (en) * | 2020-09-16 | 2022-04-01 | 北京小米移动软件有限公司 | Charging and discharging circuit, charging and discharging control method and electronic equipment |
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2017
- 2017-02-13 CN CN201720127710.XU patent/CN206547012U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464672A (en) * | 2019-01-18 | 2020-07-28 | 青岛海信移动通信技术股份有限公司 | Electronic equipment and charging method thereof |
| WO2022022436A1 (en) * | 2020-07-31 | 2022-02-03 | 华为技术有限公司 | Charging method and electronic device |
| CN111884303A (en) * | 2020-08-19 | 2020-11-03 | 深圳市爱都科技有限公司 | Charging control circuit, charging control method and electronic device |
| CN114268137A (en) * | 2020-09-16 | 2022-04-01 | 北京小米移动软件有限公司 | Charging and discharging circuit, charging and discharging control method and electronic equipment |
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Denomination of utility model: Charging method, charging circuit and electronic device Effective date of registration: 20180102 Granted publication date: 20171010 Pledgee: XinDa national equity investment fund (Shanghai) partnership (L.P.) Pledgor: ZEROTECH (BEIJING) INTELLIGENCE TECHNOLOGY Co.,Ltd.|CHONGQING ZERO INTELLIGENT CONTROL TECHNOLOGY CO.,LTD. Registration number: 2017990001217 |
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Date of cancellation: 20221008 Granted publication date: 20171010 Pledgee: XinDa national equity investment fund (Shanghai) partnership (L.P.) Pledgor: CHONGQING ZERO INTELLIGENT CONTROL TECHNOLOGY CO.,LTD. Registration number: 2017990001217 |