CN101976306A - Method for calculating discharge time of capacitor, and mobile terminal - Google Patents
Method for calculating discharge time of capacitor, and mobile terminal Download PDFInfo
- Publication number
- CN101976306A CN101976306A CN2010105290676A CN201010529067A CN101976306A CN 101976306 A CN101976306 A CN 101976306A CN 2010105290676 A CN2010105290676 A CN 2010105290676A CN 201010529067 A CN201010529067 A CN 201010529067A CN 101976306 A CN101976306 A CN 101976306A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- discharge
- voltage
- chip
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 162
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052715 tantalum Inorganic materials 0.000 description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Abstract
The invention belongs to the technical field of capacitors, and discloses a method for calculating the discharge time of a capacitor, and a mobile terminal. The method comprises the following steps that: a capacitor chip acquires a voltage U1 before the capacitor discharges; the capacitor chip acquires a voltage U2 after the capacitor discharges; the capacitor chip calculates discharge capacity according to the voltage U1 before the capacitor discharges and the voltage U2 after the capacitor discharges, wherein the discharge capacity is calculated according to formulas: Q=C*(U1-U2) and discharge capacity=Q*1/3.6milliampere*hour; and the capacitor chip calculates the discharge time of the capacitor according to a clock electrically connected with the capacitor chip, wherein the discharge time of the capacitor is calculated according to a formula: T=discharge capacity/consumed current. By the method, when the voltages on the two sides of the capacitor change, the capacity of the capacitor can be accurately calculated and the time is calculated according to the capacity of the capacitor, so that the application of the capacitor is expanded.
Description
Technical field
The invention belongs to technical field of mobile terminals, be specifically related to a kind of calculable capacitor method and portable terminal of discharge time of being used for
Background technology
Along with the continuous development of portable terminal technology, the user is also more and more higher to the requirement of mobile terminal function.
Capacitor is more in the application of portable terminal or data card, and so-called capacitor holds and discharge the electronic devices and components of electric charge exactly.The basic functional principle of capacitor is exactly a charging and discharging, also has rectification, vibration and other effect certainly.The structure of capacitor is very simple in addition, mainly is made up of two positive and negative electrodes and the insulating medium that is clipped in the middle, so capacitor type is mainly by electrode and insulating medium decision.In the circuit of the mainboard of computer system, plug-in card, power supply, used a few class capacitors such as electrolytic condenser, paper dielectric capacitor and ceramic capacitor, and based on electrolytic condenser.
At first need charging process because set up voltage on capacitor, along with charging process, the voltage on the capacitor progressively improves, and like this electric current will be arranged earlier, after set up the process of voltage.In the prior art, when condenser voltage not being changed,, cause the application of capacitor to be restricted by changing the calculating of condenser capacity.
When the voltage on the capacitor both sides changed, how accurately calculable capacitor capacity according to condenser capacity computing time, was one of direction of capacitor technology area research.
Summary of the invention
The object of the present invention is to provide a kind of calculable capacitor method of discharge time that is used for, when the voltage that is intended to the capacitor both sides changes, the discharge capacity of calculable capacitor accurately, and according to time of the discharge capacity calculable capacitor discharge of capacitor.
The embodiment of the invention is achieved in that a kind of calculable capacitor method of discharge time that is used for, and described capacitor and capacitor chip electrically connect, and wherein, said method comprising the steps of:
Obtain the preceding voltage U 1 of capacitor discharge by described capacitor chip;
Obtain voltage U 2 after capacitor obtains the discharge of described capacitor by described capacitor chip
Voltage U 1 before described capacitor chip discharges according to capacitor and the voltage U 2 after the capacitor discharge are calculated and are obtained discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight;
Described capacitor chip comes calculable capacitor discharge time according to the clock that electrically connects with this capacitor chip, wherein, when the discharge time of calculable capacitor, obtains by following formula:
T=discharge capacity/power consumption electric current.
The described calculable capacitor method of discharge time that is used for, wherein, described capacitor is arranged in the portable terminal, and connects the clock and the battery of portable terminal.
The described calculable capacitor method of discharge time that is used for, wherein, described capacitor connects data card.
Another purpose of the embodiment of the invention is to provide a kind of portable terminal, wherein, comprises the capacitor chip that is installed in the portable terminal;
Described capacitor chip is used to obtain preceding voltage U 1 of capacitor discharge and the voltage U 2 after the discharge; And calculate according to the voltage U 2 after voltage U 1 before the capacitor discharge and the capacitor discharge and to obtain discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight;
Described capacitor chip also is used for discharge time of calculating described capacitor according to the clock that is connected with this capacitor, wherein, when the discharge time of calculable capacitor, obtains in the following manner:
T=discharge capacity/power consumption electric current.
Described portable terminal, wherein, described capacitor connects the clock and the battery of portable terminal respectively.
Described portable terminal, wherein, described capacitor connects data card.
In the embodiment of the invention, described capacitor chip obtains the voltage U 2 after preceding voltage U 1 of capacitor discharge and the capacitor discharge, and obtain discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula: Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, and Q is an electric weight, when the voltage of the embodiment of the invention on the capacitor both sides changes, the discharge capacity of calculable capacitor accurately, and according to discharge time of the discharge capacity calculable capacitor of capacitor, the application of having expanded capacitor.
Description of drawings
The process flow diagram of the method that is used for calculable capacitor discharge time that Fig. 1 provides for the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows that the embodiment of the invention provides is used for the flow process of the method for calculable capacitor discharge time.
In step S101, obtain the preceding voltage U 1 of capacitor discharge by capacitor chip;
In step S102, obtain voltage U 2 after the discharge of described capacitor by capacitor chip;
In step S103, voltage U 1 before capacitor chip discharges according to capacitor and the voltage U 2 after the capacitor discharge are calculated and are obtained discharge capacity;
In step S104, capacitor chip is kept the time of (i.e. discharge) according to the described capacitor of clock calculation that is connected with this capacitor.
Wherein, in step S103, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight.
Wherein, when the time of calculable capacitor discharge, obtain in the following manner: T=discharge capacity/power consumption electric current.
Be the discharge time=Q * 1/3.6 milliampere * time/I of capacitor, wherein, the power consumption electric current when I is the capacitor discharge.
Wherein, the unit coulomb (C) of electric weight Q, it is defined as: when electric current 1 ampere-hour that flows through certain curved surface, the electric weight that passes through p.s. is defined as 1 coulomb, i.e. 1 coulomb of (C)=1 ampere * second (A * S), i.e. Q=I * t.And 1 coulomb=1 ampere * second=1000mA * second=1000mA1/3600 hour=1/3.6mA * h, i.e. 1 coulomb electric charge equivalence be 1/3.6 milliampere * time.
Appearance value C farad (the F)=Q/U of capacitor, i.e. Q=C * U, appearance value C is a steady state value of representing capacitor specific characteristics, the electric weight Q of visible capacitor is directly proportional with the voltage U at capacitor two ends.
Wherein, the conversion of static capacity F and discharge capacity mAh: capacitor appearance value is C, when its both end voltage when U1 discharges into U2, its discharge capacity Q=C * (U1-U2), discharge capacity=Q * 1/3.6 of equivalence milliampere * time.
Below with two concrete examples the present invention is described:
1, backup battery Time Calculation: with static capacity is the button capacitor of 0.07F, when 3V discharges into 2V and uses, and discharge capacity=0.07 * 1/3.6=0.0194mAh.Keeping power consumption as cell phone clock is 10uA, i.e. 0.01mA, and 0.0194/0.01=1.94h then, promptly the button capacitor of 0.07F is kept at cell phone clock and is discharged into 2V from 3V on the mobile phone that power consumption is 10uA and can keep 1.94 hours.
Can 2: high capacity energy storage tantalum capacitor power supply design in the data card: the tantalum capacitor of 2200uF satisfy power requirement in the data card peak point current is the burst power applications of 2000mA in the data card?
As long as checking 2200uF tantalum capacitor is time＞577us of discharging into 3.3V from 4V under the state of 2000mA at discharge current is that the tantalum capacitor of provable 2200uF can satisfy power requirement the data card peak point current is the burst power applications of 2000mA.
The 2200uF capacitor discharges into discharge capacity=0.002200 * (4-3.3) * 1/3.6=0.0004278mAh of 3.3V from 4V, the discharge current 2000mA 0.0004278/2000=0.0000002139 hour=0.00077004 second=770.004uS＞577uS that can discharge is so the 2200uF tantalum capacitor is to discharge into 3.3V from 4V under the state of 2000mA can satisfy data card power supply needs at discharge current.
In specific implementation process, described capacitor is arranged in the portable terminal, and connects the clock and the battery of portable terminal.
In specific implementation process, described capacitor connects data card.
The embodiment of the invention also provides a kind of capacitor chip, described capacitor chip, be used to obtain preceding voltage U 1 of capacitor discharge and the voltage U 2 after the discharge, and calculate according to the voltage U 2 after voltage U 1 before the capacitor discharge and the capacitor discharge and to obtain discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight.
Described capacitor chip also is used for the discharge time according to the described capacitor of clock calculation that is connected with this capacitor.
Preferably, described capacitor is arranged in the portable terminal, and connects the clock and the battery of portable terminal.
Preferably, described capacitor connects data card.
The embodiment of the invention also provides a kind of portable terminal, is provided with the capacitor chip that the embodiment of the invention provides in the described portable terminal, in view of this capacitor chip in above existing detailed description, repeat no more herein.
In the embodiment of the invention, described capacitor chip obtains the voltage U 2 after preceding voltage U 1 of capacitor discharge and the capacitor discharge, and obtain discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula: Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, and Q is an electric weight, when the voltage of the embodiment of the invention on the capacitor both sides changes, calculable capacitor capacity accurately, and according to condenser capacity computing time, the application of having expanded capacitor.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (6)
1. one kind is used for the calculable capacitor method of discharge time, and described capacitor and capacitor chip electrically connect, and it is characterized in that, said method comprising the steps of:
Obtain the preceding voltage U 1 of capacitor discharge by described capacitor chip;
Obtain voltage U 2 after capacitor obtains the discharge of described capacitor by described capacitor chip;
Voltage U 1 before described capacitor chip discharges according to capacitor and the voltage U 2 after the capacitor discharge are calculated and are obtained discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight;
Described capacitor chip comes calculable capacitor discharge time according to the clock that electrically connects with this capacitor chip, wherein, when the discharge time of calculable capacitor, obtains by following formula:
T=discharge capacity/power consumption electric current.
2. the calculable capacitor method of discharge time that is used for as claimed in claim 1 is characterized in that described capacitor is arranged in the portable terminal, and connects the clock and the battery of portable terminal.
3. the calculable capacitor method of discharge time that is used for as claimed in claim 1 is characterized in that, described capacitor connects data card.
4. a portable terminal is characterized in that, comprises the capacitor chip that is installed in the portable terminal;
Described capacitor chip is used to obtain preceding voltage U 1 of capacitor discharge and the voltage U 2 after the discharge; And calculate according to the voltage U 2 after voltage U 1 before the capacitor discharge and the capacitor discharge and to obtain discharge capacity, wherein, when discharge capacity is obtained in calculating, obtain by following formula:
Q=C * (U1-U2), discharge capacity=Q * 1/3.6 milliampere * time, wherein, C is the appearance value of described capacitor, Q is an electric weight;
Described capacitor chip also is used for discharge time of calculating described capacitor according to the clock that is connected with this capacitor, wherein, when the discharge time of calculable capacitor, obtains in the following manner:
T=discharge capacity/power consumption electric current.
5. portable terminal as claimed in claim 4 is characterized in that, described capacitor connects the clock and the battery of portable terminal respectively.
6. portable terminal as claimed in claim 4 is characterized in that, described capacitor connects data card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010529067.6A CN101976306B (en) | 2010-10-28 | 2010-10-28 | Method for calculating discharge time of capacitor, and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010529067.6A CN101976306B (en) | 2010-10-28 | 2010-10-28 | Method for calculating discharge time of capacitor, and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101976306A true CN101976306A (en) | 2011-02-16 |
| CN101976306B CN101976306B (en) | 2014-06-25 |
Family
ID=43576191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010529067.6A Expired - Fee Related CN101976306B (en) | 2010-10-28 | 2010-10-28 | Method for calculating discharge time of capacitor, and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101976306B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611930A (en) * | 2020-12-03 | 2021-04-06 | 上海新时达电气股份有限公司 | Information prediction method, system, electronic device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369713A (en) * | 2001-02-07 | 2002-09-18 | 弗兰克公司 | Capacitor measrement |
| US6683462B2 (en) * | 2000-11-30 | 2004-01-27 | Agilent Technologies, Inc. | Apparatus for and method of measuring capacitance with high accuracy |
| CN101788609A (en) * | 2010-02-09 | 2010-07-28 | 华为终端有限公司 | Resistance value measuring method and device or capacitance value measuring method and device |
| CN101799496A (en) * | 2010-03-09 | 2010-08-11 | 臧佳菁 | Capacitor measurement device and method thereof |
-
2010
- 2010-10-28 CN CN201010529067.6A patent/CN101976306B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6683462B2 (en) * | 2000-11-30 | 2004-01-27 | Agilent Technologies, Inc. | Apparatus for and method of measuring capacitance with high accuracy |
| CN1369713A (en) * | 2001-02-07 | 2002-09-18 | 弗兰克公司 | Capacitor measrement |
| CN101788609A (en) * | 2010-02-09 | 2010-07-28 | 华为终端有限公司 | Resistance value measuring method and device or capacitance value measuring method and device |
| CN101799496A (en) * | 2010-03-09 | 2010-08-11 | 臧佳菁 | Capacitor measurement device and method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611930A (en) * | 2020-12-03 | 2021-04-06 | 上海新时达电气股份有限公司 | Information prediction method, system, electronic device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101976306B (en) | 2014-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2409313A1 (en) | A power supply | |
| CN102723752A (en) | Piezoelectric charging type mobile terminal | |
| CN105337374A (en) | Method for prolonging power supply time | |
| CN103975501A (en) | Charging method based on electronic cigarette case and corresponding electronic cigarette case | |
| CN103515662B (en) | Charging method and can the mobile device of supplying power for outside between a kind of mobile device | |
| CN103365391A (en) | Notebook battery management device and method thereof | |
| CN102882256B (en) | A kind of ups power with double-bus charging circuit | |
| CN201126972Y (en) | Charging adapter with wireless charging function and charging equipment | |
| KR101207049B1 (en) | Charging apparatus and method for portable electronic device | |
| CN101976306B (en) | Method for calculating discharge time of capacitor, and mobile terminal | |
| CN101860054A (en) | Charge management circuit of lithium-ion battery | |
| CN204304479U (en) | Super capacitor charger baby | |
| CN106356987A (en) | RTC (real time clock) circuit | |
| CN110380509A (en) | A kind of anti-power grid instant cut-off system and its working method based on capacitor batteries | |
| CN201315495Y (en) | Electronic device | |
| CN202258818U (en) | Super capacitor voltage balancing circuit, single-stage super capacitor module and two-stage super capacitor module | |
| CN203233186U (en) | Charging circuit and communication terminal | |
| CN203984062U (en) | Lithium battery frequency conversion quick-charging circuit | |
| CN103532173A (en) | Mobile equipment and charging system with the same | |
| CN102521107A (en) | Mobile terminal and power consumption information display method and device thereof | |
| CN207992869U (en) | A kind of device extending the main board for notebook computer button cell service life | |
| CN206498234U (en) | A kind of compound portable power source of combination battery and ultracapacitor | |
| CN208028195U (en) | A kind of combined system of disposable lithium-battery and serondary lithium battery | |
| CN104467074A (en) | Super-capacitor power bank | |
| CN110299756A (en) | A kind of UPS uninterruptible power supply and its construction method based on capacitor batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |