CN206481074U - A kind of charge-discharge circuit and mobile terminal - Google Patents
A kind of charge-discharge circuit and mobile terminal Download PDFInfo
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- CN206481074U CN206481074U CN201621481321.9U CN201621481321U CN206481074U CN 206481074 U CN206481074 U CN 206481074U CN 201621481321 U CN201621481321 U CN 201621481321U CN 206481074 U CN206481074 U CN 206481074U
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- mobile terminal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of charge-discharge circuit and mobile terminal, wherein, the charge-discharge circuit, applied to mobile terminal, including：It is connected with the battery of mobile terminal, the charging path charged to battery；It is connected with the battery of mobile terminal, the discharge path that the load to mobile terminal is powered, charging path is separate with discharge path；First switch module, first switch module serially accesses to charging path, and be turned on or off charging path；And, second switch module, second switch module serially accesses to discharge path, and be turned on or off discharge path.Charge-discharge circuit and mobile terminal that the utility model embodiment is provided; charging path and discharge path are protected respectively as switch using first switch module and second switch module; simultaneously; charging path and discharge path separation; thermal source can be disperseed; complete machine temperature rise is efficiently controlled, and charging path resistance can be reduced, charge efficiency is lifted.
Description
Technical field
The utility model is related to electronic technology field, particularly relates to a kind of charge-discharge circuit and mobile terminal.
Background technology
Lithium battery is widely used due to possessing the features such as specific energy is high, service life is long in electronic technology field.But by
In the material limitation of lithium battery in itself, determine that the requirement that it is carried out when discharge and recharge is used on mobile terminals is strict, i.e. lithium electricity
Pond can not be overcharged, cross put, excessively stream, short circuit and superhigh temperature discharge and recharge, therefore, current lithium battery, lithium electrical component etc. lead to
A block protection plate can be often configured, to carry out overcharging protection, Cross prevention etc. to lithium battery.Battery is entered by traditional protection board
During row protection, battery can be charged and discharged freely, but the resistance on path can be made to become big simultaneously, be caused on protection board
Temperature rise can higher and traditional protection board there is the problem of concentration is compared in heating.
Utility model content
The utility model provides a kind of charge-discharge circuit and mobile terminal, to solve to enter lithium battery using traditional protection plate
During row protection, cause protection board temperature rise higher, the problem of heating is concentrated.
On the one hand, the utility model embodiment provides a kind of charge-discharge circuit, applied to mobile terminal, including：
It is connected with the battery of mobile terminal, the charging path charged to battery；
It is connected with the battery of mobile terminal, the discharge path that the load to mobile terminal is powered, charging path is with putting
Electric pathway is separate；
First switch module, first switch module serially accesses to charging path, and be turned on or off charging path；And,
Second switch module, second switch module serially accesses to discharge path, and be turned on or off discharge path.
On the other hand, the utility model embodiment also provides a kind of mobile terminal, including above-mentioned charge-discharge circuit.
Compared with prior art, the utility model embodiment is provided charge-discharge circuit and mobile terminal, are opened by first
Close module and serially access to charging path, second switch module serially accesses to discharge path, utilize first switch module and the
Two switch modules are protected to charging path and discharge path respectively as switch；Meanwhile, it is logical with electric discharge by charging path
Road is separate, can disperse thermal source, efficiently controls complete machine temperature rise, further, it is possible to reduce charging path resistance, lifting is filled
Electrical efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, the utility model embodiment will be retouched below
The accompanying drawing used required in stating is briefly described, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 represents the structural representation for the charge-discharge circuit that the utility model embodiment is provided.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The utility model embodiment provides a kind of charge-discharge circuit, and the charge-discharge circuit is applied to mobile terminal, wherein, should
Mobile terminal can include the electronic equipments such as mobile phone, tablet personal computer.
Fig. 1 is referred to, it is illustrated that the structural representation for the charge-discharge circuit that the utility model embodiment is provided, this reality
The charge-discharge circuit provided with new embodiment, including：It is connected with the battery 110 of mobile terminal 1 00, battery 110 is filled
The charging path of electricity；It is connected with the battery 110 of mobile terminal 1 00, the electric discharge that the load 120 to mobile terminal 1 00 is powered
Path, charging path is separate with discharge path；First switch module, first switch module serially accesses to charging path,
Be turned on or off charging path；And, second switch module, second switch module serially accesses to discharge path, leads on-off
Open electric pathway.
In the charge-discharge circuit of the utility model embodiment, charging path is separated with discharge path, by first switch mould
Block and second switch module serially access corresponding charging path and discharge path respectively, with logical in charging path and electric discharge respectively
As speed-sensitive switch on road, each charging path and discharge path are protected, and then play a part of protecting battery.Separately
Outside, charging path and discharge path is separate, can reduce via resistance, and thermal source is disperseed, and solves shared same
The problem of via resistance that path is caused is larger, efficiently controls complete machine temperature rise；Simultaneously as the reduction of via resistance, can
Lift charge efficiency.
Wherein, in one embodiment, first switch module is the first metal-oxide-semiconductor 131, source electrode (the i.e. S of the first metal-oxide-semiconductor 131
Pole) it is connected with the charging input end of battery, the drain electrode (i.e. D poles) of the first metal-oxide-semiconductor 131 connects with the charging inlet of mobile terminal 1 00
Connect.When charging path is in normal condition, the first metal-oxide-semiconductor 131 is turned on, and the drain electrode of electric current from the first metal-oxide-semiconductor 131 is flowed to the
The source electrode of one metal-oxide-semiconductor 131, charging path conducting, external charge equipment charges to battery；Otherwise, 131 sections of the first metal-oxide-semiconductor
Only, charging path disconnects.
In addition, be the break-make of effectively the first metal-oxide-semiconductor 131 of control, to protect battery 110 and charging path, in an embodiment,
The charge-discharge circuit can also include：Communicated with external charge equipment 200, detect the MCU of the electric current of charging path
(Microcontroller Unit, micro-control unit) 140；Gate drivers 150, are connected with MCU 140, and with the first MOS
Grid (G poles) connection of pipe 131, the gate drivers 150 receive the control signal that MCU 140 is sent, control the first metal-oxide-semiconductor
131 break-make.
Wherein, MCU 140 detects the electric current of charging path, and is preset in the electric current for detecting charging path less than one first
During value, send first to gate drivers 150 and instruct, gate drivers 150 export first voltage signal extremely according to the first instruction
First metal-oxide-semiconductor 131, the first metal-oxide-semiconductor 131 conducting charging path；It is more than or equal in the electric currents for detecting charging path of MCU 140
During the first preset value, send second to gate drivers 150 and instruct, gate drivers 150 export the second electricity according to the second instruction
Press signal to the first metal-oxide-semiconductor 131, the first metal-oxide-semiconductor 131 disconnects charging path.So, you can with charging path current anomaly (such as
Charging path short circuit) when, the first metal-oxide-semiconductor 131 of control disconnects charging path in time, realizes that charging path is protected.
Further, in one embodiment, the MCU 140 includes the first temperature detecting unit, the first temperature detecting unit
It is connected respectively with the first thermistor for being connected to battery and the second thermistor for being connected to charging path, detects battery
110 and the temperature of charging path；Wherein, it is more than or equal to one in the MCU 140 temperature for detecting battery 110 or charging path
During the second preset value, send the 3rd to gate drivers 150 and instruct, gate drivers 150 export the 3rd electricity according to the 3rd instruction
Press signal to the first metal-oxide-semiconductor 131, the first metal-oxide-semiconductor 131 disconnects charging path；Battery or charging path are detected in MCU 140
When temperature is less than second preset value, sends the 4th to gate drivers 150 and instruct, so that gate drivers 150 are according to the 4th
Instruction output the 4th voltage signal to the first metal-oxide-semiconductor 131, the first metal-oxide-semiconductor 131 conducting charging path.So, can be in battery
110 or charging path temperature exceeding standard when, in time control the first metal-oxide-semiconductor 131 disconnect charging path, realize charging path protect.
Wherein, in one embodiment, second switch module is the second metal-oxide-semiconductor 132, the source electrode of the second metal-oxide-semiconductor 132 and movement
The power supply interface connection of the load 120 of terminal 100, the drain electrode of the second metal-oxide-semiconductor 132 is connected with the electric discharge output end of battery 110.
When discharge path is in normal condition, the second metal-oxide-semiconductor 132 is turned on, and the drain electrode of electric current from the second metal-oxide-semiconductor 132 is flowed to the 2nd MOS
The source electrode of pipe 132, discharge path conducting, 110 pairs of loads 120 of battery are powered；Otherwise, the second metal-oxide-semiconductor 132 ends, electric discharge
Path disconnects.
In addition, be the break-make of effectively the second metal-oxide-semiconductor 132 of control, to protect discharge path, in one embodiment, the charge and discharge
Circuit can also include：It is connected with the grid of the second metal-oxide-semiconductor 132, detects the electric current of discharge path, and according to discharge path
The detection module 160 of the break-make of the second metal-oxide-semiconductor of current control 132.Wherein, the detection module 160 can be an individual devices,
Can also be PMU (the Power Management Unit, power management list for being integrated with the function that the detection module 160 possesses
Member).
Wherein, detection module 160 detects the electric current of discharge path, and is less than one the 3rd in the electric current for detecting discharge path
During preset value, the 5th voltage signal to the second metal-oxide-semiconductor 132, the second metal-oxide-semiconductor 132 conducting discharge path are exported；In detection module
When 160 electric currents for detecting discharge path are more than or equal to three preset values, the 6th voltage signal is exported to the second metal-oxide-semiconductor 132,
Second metal-oxide-semiconductor 132 disconnects discharge path.So, you can during with discharge path current anomaly (such as discharge path short circuit), and time control
Make the second metal-oxide-semiconductor 132 and disconnect discharge path, realize that discharge path is protected.
Further, in one embodiment, the detection module 160 includes second temperature detection unit, second temperature detection
Unit is connected with being connected to the 3rd thermistor of discharge path, detects the temperature of discharge path；Wherein, in detection module 160
When the temperature for detecting discharge path is more than or equal to four preset values, the 7th voltage signal to the second metal-oxide-semiconductor 132 is exported, the
Two metal-oxide-semiconductors 132 disconnect discharge path；When the temperature for detecting discharge path in detection module 160 is less than four preset values, output
8th voltage signal to the second metal-oxide-semiconductor 132, the second metal-oxide-semiconductor 132 conducting discharge path.So, can discharge path temperature
When exceeded, the second metal-oxide-semiconductor 132 of control disconnects discharge path in time, realizes that discharge path is protected.
In addition, when there is short circuit problem for guarantee battery cell transportation or other abnormal conditions, can not protect peace
Full problem, can seal in fuse in charge-discharge circuit.So, you can so that when short circuit occurs in battery cell, fusing is insured
Silk is to ensure safety.
Wherein, in one embodiment, can when the charging input end and electric discharge output end of battery 110 share an interface
It is connected, is that is to say with the interface with sealing in a fuse, the charging input end and electric discharge output end of battery is connected to same connect
Mouthful, the charge-discharge circuit can also include the first fuse, and first fuse is connected in series in the interface.
In another embodiment, one can individually be sealed in the charging input end and electric discharge output end of battery 110
Fuse, that is to say, the charge-discharge circuit can also include the second fuse 171 and the 3rd fuse 172, the second fuse
171 are connected in series in the charging input end of battery 110, and the 3rd fuse 172 is connected in series in the electric discharge output end of battery 110.
In addition, the utility model embodiment also provides a kind of mobile terminal 1 00, the mobile terminal 1 00 includes above-mentioned fill
Discharge circuit.The mobile terminal 1 00 can be the electronic equipments such as mobile phone or tablet personal computer.
Wherein, in one embodiment, the mobile terminal 1 00 also includes：Battery 110, mainboard 180 and subplate 190, wherein,
In view of the requirement to mobile terminal complete machine temperature decentralized design, charging path is laid on subplate 190, and discharge path is laid in
On mainboard 180.
Specifically, when charge-discharge circuit also includes MCU 140 and gate drivers 150, the MCU 140, grid drive
Dynamic device 150 and first switch module can be arranged on subplate 190.Certainly, if the requirement of complete machine temperature decentralized design can be met,
Can according to design needs, by the whole in the MCU 140, gate drivers 150 and first switch module or wherein it
One is arranged on mainboard 180.When charge-discharge circuit also includes detection module 160, the detection module 160 and second switch module can
It is arranged on mainboard 180.
The charge-discharge circuit that the utility model embodiment is provided possesses aforementioned techniques effect, therefore, with discharge and recharge electricity
The mobile terminal on road should also possess corresponding technique effect.
Charge-discharge circuit and mobile terminal that the utility model embodiment is provided, are serially accessed to by first switch module
Charging path, second switch module serially accesses to discharge path, by the use of first switch module and second switch module as opening
Close, charging path and discharge path are protected respectively；Meanwhile, it is separate with discharge path by charging path, can
Thermal source is disperseed, complete machine temperature rise is efficiently controlled, further, it is possible to reduce charging path resistance, charge efficiency is lifted.
It should be understood that in the description of specification, reference term " embodiment ", " one embodiment " or " some realities mentioned
Apply example " mean that the special characteristic relevant with embodiment, structure or characteristic are included at least one embodiment of the present utility model
Or in example.Therefore, " in one embodiment ", " in one embodiment " that occurs everywhere in entire disclosure or " at some
In embodiment " not necessarily refer to identical embodiment.In addition, what these specific feature, structure or characteristics can arbitrarily be adapted to
Mode is combined in one or more embodiments.
In addition, in one or more embodiments herein, such as " comprising " or "comprising" are used to illustrate to exist to enumerate
Feature or component, but do not exclude the presence of one or more of the other feature enumerated or one or more of the other component.
In addition, in utility model embodiment, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
There is any this actual relation or order.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
Calmly ", the term such as " setting " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；
Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, may be used
To understand concrete meaning of the above-mentioned term in the utility model as the case may be.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
Protection domain of the present utility model is also should be regarded as with retouching.
Claims (10)
1. a kind of charge-discharge circuit, applied to mobile terminal, it is characterised in that including：
It is connected with the battery of mobile terminal, the charging path charged to the battery；
It is connected with the battery of mobile terminal, the discharge path that the load to mobile terminal is powered, the charging path is with putting
Electric pathway is separate；
First switch module, the first switch module serially accesses to the charging path, and the charging that is turned on or off is logical
Road；And,
Second switch module, the second switch module serially accesses to the discharge path, and the electric discharge that is turned on or off is logical
Road.
2. charge-discharge circuit according to claim 1, it is characterised in that the first switch module is the first metal-oxide-semiconductor, institute
The source electrode for stating the first metal-oxide-semiconductor is connected with the charging input end of the battery, drain electrode and the mobile terminal of first metal-oxide-semiconductor
Charging inlet connection.
3. charge-discharge circuit according to claim 2, it is characterised in that also include：
With external charge equipment communication, the micro-control unit MCU of the electric current of the charging path is detected；
Gate drivers, are connected with the MCU, and are connected with the grid of first metal-oxide-semiconductor, and the gate drivers receive institute
The control signal of MCU transmissions is stated, the break-make of first metal-oxide-semiconductor is controlled.
4. charge-discharge circuit according to claim 1, it is characterised in that the second switch module is the second metal-oxide-semiconductor, institute
State the power supply interface connection of the load of the source electrode and mobile terminal of the second metal-oxide-semiconductor, drain electrode and the battery of second metal-oxide-semiconductor
Electric discharge output end connection.
5. charge-discharge circuit according to claim 4, it is characterised in that also include：
It is connected with the grid of second metal-oxide-semiconductor, detects the electric current of the discharge path, and according to the electric current of the discharge path
Control the detection module of the break-make of second metal-oxide-semiconductor.
6. charge-discharge circuit according to claim 1, it is characterised in that also including the first fuse, the battery fills
Electrical input and electric discharge output end are connected to same interface, and first fuse is connected in series in the interface.
7. charge-discharge circuit according to claim 1, it is characterised in that also including the second fuse and the 3rd fuse,
Second fuse is connected in series in the charging input end of the battery, and the 3rd fuse is connected in series in the battery
Electric discharge output end.
8. a kind of mobile terminal, it is characterised in that including the charge-discharge circuit as described in any one of claim 1 to 7.
9. mobile terminal according to claim 8, it is characterised in that also include：Battery, mainboard and subplate, wherein, it is described
Charging path is laid on subplate, and the discharge path is laid on mainboard.
10. mobile terminal according to claim 8, it is characterised in that the mobile terminal is mobile phone or tablet personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481321.9U CN206481074U (en) | 2016-12-30 | 2016-12-30 | A kind of charge-discharge circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481321.9U CN206481074U (en) | 2016-12-30 | 2016-12-30 | A kind of charge-discharge circuit and mobile terminal |
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| Publication Number | Publication Date |
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| CN206481074U true CN206481074U (en) | 2017-09-08 |
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| CN201621481321.9U Active CN206481074U (en) | 2016-12-30 | 2016-12-30 | A kind of charge-discharge circuit and mobile terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023381A (en) * | 2017-12-14 | 2018-05-11 | 贵州财富之舟科技有限公司 | Charge management circuit and mobile terminal |
| CN108231030A (en) * | 2018-01-29 | 2018-06-29 | 京东方科技集团股份有限公司 | Discharge circuit, charging method and display device |
| WO2020063113A1 (en) * | 2018-09-27 | 2020-04-02 | 西安中兴新软件有限责任公司 | Electronic device, control method and computer storage medium therefor |
| CN112398180A (en) * | 2019-08-13 | 2021-02-23 | 北京极智嘉科技有限公司 | Power supply loop, carrying equipment and power supply control method |
-
2016
- 2016-12-30 CN CN201621481321.9U patent/CN206481074U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023381A (en) * | 2017-12-14 | 2018-05-11 | 贵州财富之舟科技有限公司 | Charge management circuit and mobile terminal |
| CN108231030A (en) * | 2018-01-29 | 2018-06-29 | 京东方科技集团股份有限公司 | Discharge circuit, charging method and display device |
| CN108231030B (en) * | 2018-01-29 | 2020-04-21 | 京东方科技集团股份有限公司 | Discharge circuit, discharge method, and display device |
| WO2020063113A1 (en) * | 2018-09-27 | 2020-04-02 | 西安中兴新软件有限责任公司 | Electronic device, control method and computer storage medium therefor |
| CN112398180A (en) * | 2019-08-13 | 2021-02-23 | 北京极智嘉科技有限公司 | Power supply loop, carrying equipment and power supply control method |
| CN112398180B (en) * | 2019-08-13 | 2023-02-03 | 北京极智嘉科技股份有限公司 | Power supply loop, carrying equipment and power supply control method |
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