CN105162078B - The charge protector and method and terminal of a kind of terminal - Google Patents
The charge protector and method and terminal of a kind of terminal Download PDFInfo
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- CN105162078B CN105162078B CN201510671177.9A CN201510671177A CN105162078B CN 105162078 B CN105162078 B CN 105162078B CN 201510671177 A CN201510671177 A CN 201510671177A CN 105162078 B CN105162078 B CN 105162078B
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Abstract
The invention discloses a kind of charge protector of terminal and method and terminal, the charge protector includes：Battery core voltage detection module, is integrated in inside battery chip, for detecting the voltage of battery chip；Control module, it is connected with the battery core voltage detection module, when the voltage for recognizing detection is more than the first setting threshold value, produces load protection instruction；Load protection switchs, and is connected between battery chip and load, and is connected with the control module, for disconnecting power supply of the battery chip to the load according to load protection instruction.The present invention detects the voltage of battery chip by battery core voltage detection module; control module judges to produce load protection instruction according to the voltage swing detected; then load is protected by load protection switch; when there is abnormal pressure; cut-out battery core is connected with the power supply loaded, so as to protect load to be not damaged by.
Description
Technical field
The present embodiments relate to electronic technology field, more particularly to a kind of charge protector of terminal and method and end
End.
Background technology
Lithium ion battery is due to energy is high, cell voltage is high, working stability scope is wide and storage life length etc. is excellent
Point, it is widely used in military and civilian compact electric apparatus, such as mobile phone, portable computer, video camera and camera
Deng partly instead of conventional batteries.But because of its physical characteristic, in use, lithium battery is to charging current, electric discharge electricity
Stream, voltage and temperature requirement are very strict, once more than in safety and serious consequence will be produced on the life-span.Therefore, lithium ion
Battery is during charge/discharge operation, it is necessary to its overcharge voltage, overdischarge voltage, charging limit electric current and discharge current
Detected and controlled Deng key parameter, to prevent battery excessive loss while ensure the safety in use.
Current battery protection board, which all includes, overcharges the functions such as protection, Cross prevention, charge over-current, discharge over-current.
Because mobile phone is likely encountered the situation of overtension when charging, cell phone charging circuit adds over-voltage protecting function, typically
It is to add overvoltage protection chip in prime, the circuit of these over-voltage protecting functions can be realized reaches a certain in charger input voltage
Automatic charge closing input, realizes the overvoltage protection to circuit during the upper limit.
But can directly it be supplied when abnormal pressure or battery core side access high pressure, the high pressure of battery core part extremely occurs in battery core
To the load using power supply, load may can be damaged when voltage reaches certain value, meanwhile, too high voltage also can be in circuit
Component cause to damage.
The content of the invention
The present invention provides a kind of charge protector and method and terminal of terminal, to realize when abnormal pressure occurs in battery core
When, load is effectively protected.
To use following technical scheme up to this purpose, the present invention：
In a first aspect, the embodiments of the invention provide a kind of charge protector of terminal, including
Battery core voltage detection module, is integrated in inside battery chip, for detecting the voltage of battery chip；
Control module, it is connected with the battery core voltage detection module, the voltage for recognizing detection is more than the first setting
During threshold value, load protection instruction is produced；
Load protection switchs, and is connected between battery chip and load, and is connected with the control module, for according to institute
State load protection instruction and disconnect power supply of the battery chip to the load.
Second aspect, the embodiment of the present invention additionally provide a kind of charge protection method of terminal, including：
The voltage of battery chip is detected by the battery core voltage detection module；
When recognizing the voltage of detection more than the first setting threshold value by the control module, produce load protection and refer to
Order；
Load protection instruction is transferred to load protection switch, to control the load protection switch according to described negative
Carry protection instruction and disconnect power supply of the battery chip to the load.
The third aspect, the embodiment of the present invention additionally provide a kind of terminal, including battery and battery chip, in addition to first party
The charge protector of terminal described in face.
The present invention detects the voltage of battery chip by battery core voltage detection module, and control module is according to the voltage detected
Size judges to produce load protection instruction, then load protected by load protection switch, when there is abnormal pressure
When, cut-out battery core is connected with the power supply loaded, so as to protect load to be not damaged by.
Brief description of the drawings
In order to clearly illustrate the technical scheme of exemplary embodiment of the present, below to needed for description embodiment
The accompanying drawing to be used does a simple introduction.Obviously, the accompanying drawing introduced is the part of the embodiment of the invention to be described
Accompanying drawing, rather than whole accompanying drawings, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of charge protector structural representation for terminal that the embodiment of the present invention one provides；
Fig. 2 is a kind of charge protector structural representation for terminal that the embodiment of the present invention two provides；
Fig. 3 is a kind of charge protector structural representation for terminal that the embodiment of the present invention three provides；
Fig. 4 is a kind of schematic flow sheet of the charge protection method for terminal that the embodiment of the present invention four provides.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing described as flow chart or method.Although every step is described as the processing of order by flow chart, therein to be permitted
Multi-step can be implemented concurrently, concomitantly or simultaneously.In addition, the order of every step can be rearranged.When it
The processing can be terminated when step is completed, it is also possible to the additional step being not included in accompanying drawing.The processing
It can correspond to method, function, code, subroutine, subprogram etc..
Embodiment one
Fig. 1 be the embodiment of the present invention one provide a kind of terminal charge protector structural representation, the circuit structure
It can apply in the terminal for arbitrarily needing to provide charge protection, as shown in figure 1, the structure specifically includes：Battery core voltage detecting
Module 110, control module 120 and load protection switch 130.
Wherein, battery core voltage detection module 110, is integrated in inside battery chip, for detecting the voltage of battery chip；Control
Molding block 120, it is connected with the battery core voltage detection module, the voltage for recognizing detection is more than the first setting threshold value
When, produce load protection instruction；Load protection switch 130, be connected to battery chip and load between, and with the control module
120 are connected, for disconnecting power supply of the battery chip to the load according to load protection instruction.
Exemplary, described first sets threshold value as 6V-7V, preferably can be 6.5V.The load protection switch is adopted
With metal-oxide semiconductor fieldeffect transistor (the Metal-Oxid-Semiconductor field-effects for being in series with diode
Transistor, metal-oxide-semiconductor).Further, when battery core voltage detection module 110 detects battery core voltage higher than the first setting threshold value
(U1) when, V1MOS pipes are closed, and cut-out battery chip is connected with the power supply loaded, and protection load is not damaged by.
A kind of charge protector for terminal that the embodiment of the present invention one provides, electricity is detected by battery core voltage detection module
The voltage of chamber chip, control module judge that producing load protection instructs, and then protects by loading according to the voltage swing detected
Shield is switched to be protected to load, and when there is abnormal pressure, cut-out battery core is connected with the power supply loaded, so as to protect load
It is not damaged by.
Embodiment two
Fig. 2 is a kind of charge protector structural representation for terminal that the embodiment of the present invention two provides, further, this
Inventive embodiments provide a kind of overcharge protection circuit structure, as shown in Fig. 2 the structure specifically includes：Battery core voltage detecting
Module 110, control module 120 and overcharge protection switch 140.
Wherein, battery core voltage detection module 110, is integrated in inside battery chip, for detecting the voltage of battery chip；Control
Molding block 120, it is connected with the battery core voltage detection module, the voltage for recognizing detection is more than the second setting threshold value
When, generation overcharges protection instruction；Overcharge protection switch 140, be connected between the battery chip and charging inlet, and with it is described
Control module 120 is connected, and disconnects charging of the charging inlet to battery chip for overcharging protection instruction according to.
Exemplary, described second sets threshold value as 4V-4.5V, preferably can be 4.35V.It is described to overcharge protection switch
Using the metal-oxide-semiconductor for being in series with diode.Further, when battery core voltage detection module 110 detects that battery core voltage is higher than second
When setting threshold value (U2), V2MOS pipes are closed, and cut off the connection of battery core and charging inlet, stop charging, and realization overcharges protection work(
Energy.Further, in the case where overcharging guard mode, V2 body diode still can turn on, and allow battery to load supplying.
A kind of charge protector for terminal that the embodiment of the present invention two provides, electricity is detected by battery core voltage detection module
The voltage of chamber chip, control module judge that generation overcharges protection instruction according to the voltage swing detected, then protected by overcharging
Shield switch realized charging protection function, and in the case where overcharging guard mode, V2 body diode still can turn on, and made battery can be with
To load supplying.
Embodiment three
Fig. 3 is a kind of charge protector structural representation for terminal that the embodiment of the present invention three provides, the present embodiment
Technical scheme is made further based on above-described embodiment one and embodiment two on the basis of embodiment one and embodiment two
Optimization.
As shown in figure 3, battery core voltage detection module 110 is integrated in inside battery chip, the battery chip can be installed
Inside battery pack or application system.Control module 120 is connected with the battery core voltage detection module 110, when recognizing electricity
Core voltage detection module 110 detect voltage be more than first setting threshold value when, by produce load protection instruction act on it is negative
Protection switch 130 is carried, when the voltage for recognizing the detection of battery core voltage detection module 110 is more than the second setting threshold value, is passed through
Generation overcharges protection instruction and acts on and overcharge protection switch 140, and further, the load protection switch 130 is with overcharging protection
Switch 140 is arranged in series, and load protection switch 130 is connected between battery chip and load, is overcharged protection switch 140 and is connected to
Between battery chip and charging inlet, further, load protection switch 130, which is respectively adopted with overcharging protection switch 140, connects
There are the metal-oxide-semiconductor V1 and V2 of diode.
Exemplary, the first setting threshold value is more than the described second setting threshold value.When starting to charge up, V1MOS pipes,
V2MOS pipes can turn on all in open mode, V1 body diode and V2 body diode, it should be noted that V1's
Body diode and V2 body diode are in opposite direction, are respectively used to situation about being charged and discharged.When battery core voltage detection module is examined
When measuring battery core voltage less than the second setting threshold value, now battery, which can charge normal, to be protected normally to load discharge
Card load normal use；When battery core voltage detection module detects battery core voltage more than the second setting threshold value and is set less than first
When determining threshold value, now V1MOS pipes are opened, the shut-off of V2MOS pipes, now battery do not recharge but can normally to load discharge,
Proof load normal use；When battery core voltage detection module detects that battery core voltage is more than the first setting threshold value, that is, judge
There is abnormal pressure in battery core end, continue to load supplying may breaking load, now V1MOS pipes turn off, cut-out battery core with it is negative
Power supply connection between load, protection load are not destroyed.
Further, resistance R1 and electric capacity C1 is also included in the charge protector, the resistance and electric capacity are all to electricity
Road shields.
A kind of charge protector for terminal that the embodiment of the present invention three provides, electricity is detected by battery core voltage detection module
The voltage of chamber chip, control module judge to produce load protection instruction or overcharge protection to refer to according to the voltage swing detected
Order, then either overcharge protection switch by load protection switch to control VI metal-oxide-semiconductors or V2MOS pipes beats on or off
It is disconnected, realize load protection function or cross charging protection function.When there is abnormal pressure, cut-out battery core and the power supply of load connect
Connect, so as to protect load to be not damaged by；In the case where overcharging guard mode, V2 body diode still can turn on, and make battery can be with
To load supplying；When battery core voltage is less than the second setting threshold value, now battery can normal discharge and recharge.
Example IV
Fig. 4 be the embodiment of the present invention four provide a kind of terminal charge protection method schematic flow sheet, the charger
Maintaining method can be applied in any charge protector, and can be applied in the terminal for arbitrarily needing to provide charge protection.
As shown in figure 4, this method specifically includes：
S210, the voltage by battery core voltage detection module detection battery chip；
S220, when recognizing by the control module voltage of detection and being more than the first setting threshold value, produce load and protect
Finger shield makes；
Exemplary, described first sets threshold value as 6V-7V, preferably can be 6.5V, when the voltage for recognizing detection
During more than the first setting threshold value, now it is defaulted as battery core and abnormal pressure or battery core side access high pressure extremely occurs, produce negative
Carry protection instruction.
S230, load protection instruction is transferred to load protection switch, to control load protection switch basis
The load protection instruction disconnects power supply of the battery chip to the load.
Exemplary, the load protection switch is using the metal-oxide-semiconductor V1 for being in series with diode, when the metal-oxide-semiconductor receives
When load protection instructs, V1MOS pipes are closed, and cut-out battery core is connected with the power supply loaded, and protection load is not damaged by.
Further, the charge protection method also includes：
If recognize the voltage of detection more than the second setting threshold value by the control module, generation overcharges protection
Instruction；
Exemplary, described second sets threshold value as 4V-4.5V, preferably can be 4.35V, when the electricity for recognizing detection
When pressure is more than the second setting threshold value and sets threshold value less than first, now it is defaulted as reaching over-voltage protection point, generation overcharges
Protection instruction.
Overcharge protection instruction by described and be transferred to and overcharge protection switch, to overcharge protection switch described in control according to the mistake
Fill protection instruction and disconnect charging of the charging inlet to battery chip.
Exemplary, the protection switch that overcharges is using the metal-oxide-semiconductor V2 for being in series with diode, when the metal-oxide-semiconductor receives
When overcharging protection instruction, V2MOS pipes are closed, and cut off the connection of battery core and charging inlet, stop charging, and realization overcharges protection work(
Energy.Further, in the case where overcharging guard mode, V2 body diode still can turn on, and allow battery to load supplying.
Further, if recognize the voltage of detection less than the second setting threshold value by the control module, this
When V1MOS pipes, V2MOS pipes can be turned on all in open mode, V1 body diode and V2 body diode, now battery
Can charge normal can also be normally to load discharge, proof load normal use.
A kind of charge protection method for terminal that the embodiment of the present invention four provides, electricity is detected by battery core voltage detection module
The voltage of chamber chip, the voltage swing that detection is recognized by control module judge that producing load protection instructs or overcharge protection
Instruction, load protection instruction is either then overcharged into protection instruction it is transferred to corresponding load protection and switchs or overcharge protection and open
Close to realize load protection function or cross charging protection function.When there is abnormal pressure, cut-out battery core and the power supply of load connect
Connect, so as to protect load to be not damaged by；In the case where overcharging guard mode, V2 body diode still can turn on, and make battery can be with
To load supplying；When battery core voltage is less than the second setting threshold value, now battery can normal discharge and recharge.By to detecting
The voltage of battery chip judge different working conditions, and then realize different circuit functions.
The embodiment of the present invention additionally provides a kind of terminal, and the terminal specifically includes：Battery and battery chip, in addition to this
The charge protector for the terminal mentioned in invention any embodiment.
Specifically, the battery chip need the overcharge voltage to battery, overdischarge voltage, charging limit electric current and
The key parameters such as discharge current are detected and controlled, and for preventing battery excessive loss, while can ensure battery and terminal
Safety in use.
Further, the terminal can be that mobile phone, tablet personal computer or other terminals for needing to provide charge protection are set
It is standby.
A kind of terminal that the embodiment of the present invention is provided is used for the charge protection method provided according to embodiments of the present invention, should
With charge protector provided in an embodiment of the present invention, reach the purpose of charge protection, possess and perform the corresponding work(of the above method
Can module and beneficial effect.Not ins and outs of detailed description in the present embodiment, reference can be made to the above embodiment of the present invention is carried
The circuit and method of confession.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (3)
- A kind of 1. charge protector of terminal, it is characterised in that including：Battery core voltage detection module, is integrated in inside battery chip, for detecting the voltage of battery chip；Control module, it is connected with the battery core voltage detection module, the voltage for recognizing detection is more than the first setting thresholding During value, i.e., when high pressure is accessed in battery core side extremely, produce load protection instruction；When the control module is additionally operable to recognize the voltage of detection more than the second setting threshold value, generation overcharges protection instruction；Wherein, described first threshold value is set as 6.5V；Described second sets threshold value as 4.35V；Load protection switchs, and is connected between battery chip and load, and is connected with the control module, for according to described negative Carry protection instruction and disconnect power supply of the battery chip to the load；The circuit also include overcharge protection switch, be connected between the battery chip and charging inlet, and with the control Module is connected, and disconnects charging of the charging inlet to battery chip for overcharging protection instruction according to；Wherein, the load protection, which switchs and overcharges protection switch, is respectively adopted Metal-oxide-semicondutor field effect transistor Pipe, and a diode in parallel between the source electrode of the field-effect transistor and drain electrode, wherein, the positive pole of diode and institute The source electrode electrical connection of field-effect transistor is stated, the negative pole of diode electrically connects with the drain electrode of the field-effect transistor.
- 2. a kind of load protection terminal, including battery and battery chip, it is characterised in that also including the end described in claim 1 The charge protector at end.
- 3. a kind of charge protection method of terminal, it is characterised in that performed using the terminal described in claim 2, the side Method includes：The voltage of battery chip is detected by battery core voltage detection module；When recognizing the voltage of detection more than the first setting threshold value by control module, i.e., when high pressure is accessed in battery core side extremely, Produce load protection instruction；Load protection instruction is transferred to load protection switch, to control the load protection switch to refer to according to the load protection Order disconnects power supply of the battery chip to load；If recognize the voltage of detection more than the second setting threshold value by the control module, generation overcharges protection and referred to Order；Overcharge protection instruction by described and be transferred to and overcharge protection switch, guarantor is overcharged according to overcharge protection switch described in control Finger shield order disconnects charging of the charging inlet to battery chip；Wherein, described first threshold value is set as 6.5V；Described second sets threshold value as 4.35V；Wherein, the load protection, which switchs and overcharges protection switch, is respectively adopted Metal-oxide-semicondutor field effect transistor Pipe, and a diode in parallel between the source electrode of the field-effect transistor and drain electrode, wherein, the positive pole of diode and institute The source electrode electrical connection of field-effect transistor is stated, the negative pole of diode electrically connects with drain electrode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510671177.9A CN105162078B (en) | 2015-10-15 | 2015-10-15 | The charge protector and method and terminal of a kind of terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671177.9A CN105162078B (en) | 2015-10-15 | 2015-10-15 | The charge protector and method and terminal of a kind of terminal |
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| Publication Number | Publication Date |
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| CN105162078A CN105162078A (en) | 2015-12-16 |
| CN105162078B true CN105162078B (en) | 2018-02-23 |
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| CN201510671177.9A Active CN105162078B (en) | 2015-10-15 | 2015-10-15 | The charge protector and method and terminal of a kind of terminal |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018068270A1 (en) * | 2016-10-13 | 2018-04-19 | 深圳市道通智能航空技术有限公司 | Charging circuit and device |
| CN114158781B (en) * | 2021-10-27 | 2024-05-14 | 海南摩尔兄弟科技有限公司 | Electronic device, battery rod applying same and electronic atomization device |
| CN117458424A (en) * | 2023-11-09 | 2024-01-26 | 睿尔曼智能科技（北京）有限公司 | Automatic power supply switching device, power supply control system and control method |
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| CN102570406A (en) * | 2011-12-09 | 2012-07-11 | 无锡中星微电子有限公司 | Battery protection device |
| CN203466560U (en) * | 2013-08-27 | 2014-03-05 | 鞍山市同益光电科技有限公司 | Intelligent lithium battery guide plate |
| CN204578841U (en) * | 2015-04-23 | 2015-08-19 | 南通理工学院 | A kind of safety-type photovoltaic intelligent illuminating system for public toilet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187713A (en) * | 2011-12-30 | 2013-07-03 | 深圳富泰宏精密工业有限公司 | Overvoltage protection circuit and portable electronic device |
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2015
- 2015-10-15 CN CN201510671177.9A patent/CN105162078B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570406A (en) * | 2011-12-09 | 2012-07-11 | 无锡中星微电子有限公司 | Battery protection device |
| CN203466560U (en) * | 2013-08-27 | 2014-03-05 | 鞍山市同益光电科技有限公司 | Intelligent lithium battery guide plate |
| CN204578841U (en) * | 2015-04-23 | 2015-08-19 | 南通理工学院 | A kind of safety-type photovoltaic intelligent illuminating system for public toilet |
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| CN105162078A (en) | 2015-12-16 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |