CN108230983A - The method for managing power supply of display screen - Google Patents
The method for managing power supply of display screen Download PDFInfo
- Publication number
- CN108230983A CN108230983A CN201810054694.5A CN201810054694A CN108230983A CN 108230983 A CN108230983 A CN 108230983A CN 201810054694 A CN201810054694 A CN 201810054694A CN 108230983 A CN108230983 A CN 108230983A
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- Prior art keywords
- power supply
- voltage
- display screen
- energy
- electric energy
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a kind of method for managing power supply of display screen, includes the following steps：Detect cell voltage；When the cell voltage is located at the first predetermined voltage range, access regulator circuit is to reduce after voltage to preset first threshold value voltage output electric energy to display screen；Set energy branch storage electric energy.In the embodiment provided in the application, it can be selected storage electric energy later use according to practical situation or directly utilized, so as to improve the efficiency of power supply by energy branch.
Description
Technical field
The present invention relates to field of power management, more particularly to a kind of method for managing power supply of display screen.
Background technology
In traditional technology, power supply can power to display screen.The electric energy that display screen utilizes and the electric energy of power supply supply, the two
Between ratio can reflect the efficiency of power supply.The temperature, aobvious of the efficiency of power supply and the operating mode of power management chip, power supply
Display screen has relationship as the load of load.
During traditional technology is realized, it is found by the applicant that there are following technical problems：
It is apparent that the heating of power supply causes the efficiency of power supply to reduce.
Invention content
Based on this, it is necessary to which the heating for above-mentioned power supply causes the efficiency of power supply to reduce the technical issues of apparent, provides
A solution.
A kind of method for managing power supply of display screen, includes the following steps：
Detect cell voltage；
When the cell voltage is located at the first predetermined voltage range, access regulator circuit is to reduce voltage to default the
Electric energy is exported after one threshold voltage to display screen；
Set energy branch storage electric energy.
The application also provides a kind of method for managing power supply of display screen, includes the following steps：
Detect cell voltage；
When the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit directly exports electric energy by power supply
To display screen；
It is determined according to load capacity, if setting energy branch charges to power supply.
The method further includes in one of the embodiments,：
When power source loads amount is not less than default load threshold, setting energy branch charges to power supply.
The application also provides a kind of method for managing power supply of display screen, includes the following steps：
Detect cell voltage；
Judge that the cell voltage is located at the first predetermined voltage range and is still located at the second predetermined voltage range；
When the cell voltage is located at the first predetermined voltage range, access regulator circuit is to reduce voltage to default the
Electric energy is exported after one threshold voltage to display screen, meanwhile, setting energy branch storage electric energy；
And when the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit directly exports electricity by power supply
Can to display screen, meanwhile, determined according to load capacity, if setting energy branch charge to power supply.
The method further includes in one of the embodiments,：
When the cell voltage is located at the second predetermined voltage range, power source loads amount is detected；
When power source loads amount is not less than default load threshold, setting energy branch exports electric energy to power supply.
The preset first threshold value voltage is the first predetermined voltage range and the second default electricity in one of the embodiments,
Press the separation of range；
The power supply of the display screen is managed by power management chip；
The power management chip has the default second threshold voltage for separating different working modes；
The preset first threshold value voltage is less than the default second threshold voltage.
The energy branch converts heat energy into electric energy in one of the embodiments,.
The technical solution that the application provides at least has the advantages that：
Electric energy later use can be stored according to condition by energy branch or directly utilized, so as to improve power supply
Efficiency.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for managing power supply of display screen provided by the embodiments of the present application.
Fig. 2 is the curve graph of power-efficient provided by the embodiments of the present application and temperature.
Fig. 3 is regulator circuit figure provided by the embodiments of the present application.
Fig. 4 is the flow diagram of the method for managing power supply of another display screen provided by the embodiments of the present application.
Fig. 5 is power-efficient provided by the embodiments of the present application and load curve figure.
Fig. 6 is the flow diagram of the method for managing power supply of the third display screen provided by the embodiments of the present application；
Fig. 7 is energy subcircuits structure provided by the embodiments of the present application.
Specific embodiment
Purpose, technical scheme and advantage to make the application are clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
Fig. 1 is please referred to, the application provides a kind of method for managing power supply of display screen, including：
S100：Detect cell voltage.
The energy state of power supply can be characterized by cell voltage.The operating mode of power supply output electric energy can be by power supply
Managing chip is adjusted and is switched.In general, power management chip can set two kinds of operating modes, for example, during electric energy abundance
Energy-efficient operating mode when normal mode of operation and electric energy inanition.Both operating modes usually divide when characterizing in the form of a voltage
It is not referred to as full pressure and under-voltage.It is understood that for specific power supply, electrical parameter when completely pressing and is under-voltage exists
It is fluctuated in a certain range.In order to enable improving the efficiency of power supply, the facing during switching of power management chip operating mode can be set
Boundary's electrical parameter.For example, when detecting cell voltage in the first predetermined voltage range, power management chip control power supply according to
The first mode of operation；And when detecting cell voltage in the second predetermined voltage range, power management chip control electricity
Source is according to second of mode of operation.
Corresponding analog voltage signal can be converted to digital voltage by the detection of cell voltage by analog-to-digital conversion module
Signal, so as to converse cell voltage.
S200：When the cell voltage is located at the first predetermined voltage range, regulator circuit is accessed to reduce voltage extremely
Electric energy is exported after preset first threshold value voltage to display screen.
It is normal when power management chip can be according to electric energy abundance when cell voltage is located at the first predetermined voltage range
Mode of operation.And during according to electric energy abundance normal mode of operation work when, the fever of power supply is obvious.Moreover, with
The fever of power supply leads to significantly reducing for power-efficient.As shown in Fig. 2, illustrate the curve graph of power-efficient and temperature.
In the application, when power supply electric energy abundance, access regulator circuit is to export electric energy after reducing voltage to preset first threshold value voltage
To display screen, so as to reduce the heating effect of power supply.
Regulator circuit refers to Fig. 3.In circuit diagram shown in Fig. 3,4.2≤cell voltage≤4.8V is pre- for first
If voltage range.At this point, D1 conductings, D2 are not turned on, clamper is in 4.2V.Power management chip controls the pin of power management chip
Current potential, with realize Buck-Boost circuits access.It is thus possible to by voltage drop down to the preset first threshold value voltage of 4.2V,
Then to load supply of electrical energy.Here load can be display screen.
S300：Set energy branch storage electric energy.
Energy branch storage electric energy can be set.In the specific embodiment provided in the application, the storage of energy branch
The source of electric energy, on the one hand can derive from the thermal energy in circuit, on the other hand can derive from the electric energy in power supply.Energy branch
The thermal energy in circuit of the electric energy of road storage, it can be understood as, be by transitions by the thermal energy generated in circuit
Electric energy is stored.The electric energy in power supply of the electric energy of energy branch storage, it can be understood as, power supply is to energy branch
It charges.
Provided above is a kind of preferred embodiment, it is, of course, also possible to according to actual needs, only set energy branch
Store any one in source above.
It, can be according to practical situation, after selecting storage electric energy by energy branch in the embodiment provided in the application
It is continuous to utilize or directly utilize, so as to improve the efficiency of power supply.
Fig. 4 is please referred to, a kind of method for managing power supply of display screen is provided for the application, including：
S110：Detect cell voltage.
Such as foregoing teachings, the energy state of power supply can be characterized by cell voltage.Power supply exports the Working mould of electric energy
Formula can be adjusted and be switched by power management chip.In general, power management chip can set two kinds of operating modes, for example,
Energy-efficient operating mode during normal mode of operation and electric energy inanition during electric energy abundance.Both operating modes are in the form of a voltage
It is commonly referred to as completely pressing during characterization and under-voltage.It is understood that for specific power supply, when completely pressing and be under-voltage
Electrical parameter fluctuate in a certain range.In order to enable improving the efficiency of power supply, power management chip Working mould can be set
Critical electrical parameter when formula switches.For example, when detecting cell voltage in the first predetermined voltage range, power management chip
Power supply is controlled according to the first mode of operation；And when detecting cell voltage in the second predetermined voltage range, power supply pipe
Chip controls power supply is managed according to second of mode of operation.
Corresponding analog voltage signal can be converted to digital voltage by the detection of cell voltage by analog-to-digital conversion module
Signal, so as to converse cell voltage.
S210：When the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit is directly exported by power supply
Electric energy is to display screen.
When cell voltage is located at the second predetermined voltage range, power management chip is energy-efficient when can be according to electric energy inanition
Operating mode.And according to during energy-efficient mode of operation, the fever of power supply decreases during electric energy inanition.Moreover, power supply
The effect that fever leads to power-efficient and reduces is slowed down.However, power management chip switching working mode leads to power-efficient
The effect of reduction highlights.
Regulator circuit refers to Fig. 3.In circuit diagram shown in Fig. 3, cell voltage ＜ 4.2V are the second default electricity
Press range.The current potential of the pin of power management chip control power management chip, to realize that Boost circuit accesses, short-circuit Buck-
Boost regulator circuits.Then, to load supply of electrical energy.Here load can be display screen.
S310：It is determined according to load capacity, if setting energy branch charges to power supply.
Further, in the application provides a kind of embodiment, the method further includes：
When power source loads amount is not less than default load threshold, setting energy branch charges to power supply.
Power source loads amount can be characterized by flowing through the electric current of load.As shown in figure 5, the increasing with power source loads amount
Greatly, the efficiency of power supply decreases.The detection of load can be converted to corresponding analog stream signal by analog-to-digital conversion module
Digital current signal, so as to converse load current.Certainly, the detection of load current be can directly by Hall sensor into
Row obtains.
In the embodiment of the present application, setting energy branch exports electric energy to power supply, in this way, the voltage of power supply can be promoted
Value promotes power-efficient.
Fig. 6 is please referred to, a kind of method for managing power supply of display screen is provided for the application, including：
S120：Detect cell voltage.
S220：Judge that the cell voltage is located at the first predetermined voltage range and is still located at the second predetermined voltage range.
S320：When the cell voltage is located at the first predetermined voltage range, regulator circuit is accessed to reduce voltage extremely
Electric energy is exported after preset first threshold value voltage to display screen, meanwhile, setting energy branch storage electric energy.
S420：And when the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit is directly defeated by power supply
Go out electric energy to display screen, meanwhile, it is determined according to load capacity, if setting energy branch charges to power supply.
It is in place of the difference of scheme and aforementioned schemes provided in the embodiment of the present application, aforementioned schemes are only to battery electricity
When pressure is in the first predetermined voltage range, when making respective handling, and the second predetermined voltage range is in for cell voltage, no
It processes.Alternatively, when being only in the second predetermined voltage range to cell voltage, make respective handling, and for cell voltage at
When the first predetermined voltage range, do not process.And in the embodiment of the present application, the first predetermined voltage range is in cell voltage
When, when being handled in a way, and the second predetermined voltage range is in cell voltage, alternatively carry out
Processing.
Further, in the application provides a kind of embodiment, the method further includes：
When the cell voltage is located at the second predetermined voltage range, power source loads amount is detected；
When power source loads amount is not less than default load threshold, setting energy branch exports electric energy to power supply.
As described in foregoing teachings, when power source loads amount is not less than default load threshold, in this way, the branch output of setting energy
Electric energy is to power supply, in this way, the voltage value of power supply can be promoted, promotes power-efficient.
Further, in the application provides a kind of embodiment, the method further includes：
When the cell voltage is located at the second predetermined voltage range, power source loads amount is detected；
Compare the power source loads amount and default load threshold；
It when power source loads amount is not less than default load threshold, is determined according to load capacity, if setting energy branch is to electricity
It charges in source.
Further, in the application provides a kind of embodiment, the preset first threshold value voltage is the first predeterminated voltage
The separation of range and the second predetermined voltage range；
The power supply of the display screen is managed by power management chip；
The power management chip has the default second threshold voltage for separating different working modes；
The preset first threshold value voltage is less than the default second threshold voltage.
It, can by foregoing teachings it is found that power management chip has the default second threshold voltage for separating different working modes
Preset first threshold value voltage to be set, to achieve the purpose that cell voltage energy storage, to be prevented less than the default second threshold voltage
Power-efficient reduces.For example, when the default second threshold voltage that power management chip separates different working modes is 4.4V, setting
Preset first threshold value voltage is 4.2V, then, cell voltage can store electricity always during 4.2V is dropped to from maximum value
Can, so as to later use, furthermore, it is possible to when avoiding service voltage relatively high, the caused power-efficient caused by that generates heat
It reduces.
Further, in the application provides a kind of embodiment, the energy branch converts heat energy into electric energy.
A kind of energy subcircuits structure for converting heat energy into electric energy is disclosed as shown in Figure 7.The circuit structure is
LTC3588-1 millimicro power energy scavenging sources.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
1. a kind of method for managing power supply of display screen, which is characterized in that include the following steps：
Detect cell voltage；
When the cell voltage is located at the first predetermined voltage range, regulator circuit is accessed to reduce voltage to default first threshold
Electric energy is exported after threshold voltage to display screen；
Set energy branch storage electric energy.
2. a kind of method for managing power supply of display screen, which is characterized in that include the following steps：
Detect cell voltage；
When the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit is directly exported electric energy by power supply to aobvious
Display screen；
It is determined according to load capacity, if setting energy branch charges to power supply.
3. according to the method described in claim 2, it is characterized in that, the method further includes：
When power source loads amount is not less than default load threshold, setting energy branch charges to power supply.
4. a kind of method for managing power supply of display screen, which is characterized in that include the following steps：
Detect cell voltage；
Judge that the cell voltage is located at the first predetermined voltage range and is still located at the second predetermined voltage range；
When the cell voltage is located at the first predetermined voltage range, regulator circuit is accessed to reduce voltage to default first threshold
Electric energy is exported after threshold voltage to display screen, meanwhile, setting energy branch storage electric energy；
And when the cell voltage is located at the second predetermined voltage range, short-circuit regulator circuit directly exports electric energy extremely by power supply
Display screen, meanwhile, it is determined according to load capacity, if setting energy branch charges to power supply.
5. according to the method described in claim 4, it is characterized in that, the method further includes：
When the cell voltage is located at the second predetermined voltage range, power source loads amount is detected；
When power source loads amount is not less than default load threshold, setting energy branch exports electric energy to power supply.
6. according to the method described in claim 5, it is characterized in that, the preset first threshold value voltage is the first predeterminated voltage model
Enclose the separation with the second predetermined voltage range；
The power supply of the display screen is managed by power management chip；
The power management chip has the default second threshold voltage for separating different working modes；
The preset first threshold value voltage is less than the default second threshold voltage.
7. according to the method described in any one of claim 1-6, which is characterized in that the energy branch converts heat energy into electricity
Energy.
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| CN201810054694.5A CN108230983A (en) | 2018-01-19 | 2018-01-19 | The method for managing power supply of display screen |
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| CN201810054694.5A CN108230983A (en) | 2018-01-19 | 2018-01-19 | The method for managing power supply of display screen |
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Cited By (1)
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| CN112397027A (en) * | 2020-12-11 | 2021-02-23 | 上海天马有机发光显示技术有限公司 | Driving module, voltage generation method thereof and display device |
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