CN101192687A - Device for displaying battery charged state by LED - Google Patents
Device for displaying battery charged state by LED Download PDFInfo
- Publication number
- CN101192687A CN101192687A CNA2006100976724A CN200610097672A CN101192687A CN 101192687 A CN101192687 A CN 101192687A CN A2006100976724 A CNA2006100976724 A CN A2006100976724A CN 200610097672 A CN200610097672 A CN 200610097672A CN 101192687 A CN101192687 A CN 101192687A
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- led
- battery
- charging state
- battery charging
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a device which uses an LED for displaying the charging state of a battery. The device includes a battery, by which the charging state information of the battery is received, with which the average current value is controlled in a PWM manner by using the battery information; an LED controller which regulates the brightness of the LED in each color; an LED part which receives control signals outputted by the LED controller and displays colors corresponding to the battery information. By adopting the device which uses the LED for displaying the charging state of the battery in the invention, the charging condition of the battery can be known by the user even when a host can not be opened. By adopting the invention, load of a system can also be reduced.
Description
Technical field
The present invention relates to a kind of light-emitting diode (Light Emitting Diode that utilizes, hereinafter to be referred as ' LED ') show the device of battery charging state, relate in particular to a kind of utilization to there not being the mobile phone of outer liquid crystal display screen (LCD), perhaps suspending the mobile devices such as PDA(Personal Digital Assistant) that LCDs (LCD) is closed under (Suspend) or sleep state (Sleep) pattern, the level of charge that perhaps makes these devices carry out the charger etc. of external charging shows the display unit of battery charging state by LED.
Background technology
The display packing to charging and the LED that shows of battery status of prior art will be opened pattern { Solid: LED is opened (Turn on) } and flicker pattern (Blink: with LED Turn on/off repeatedly periodically) exactly, and " shut " mode" { Off: LED is closed (Turn off) } isotype makes up.
Like this, the information that provides for the user will be subjected to certain restriction, and it is merely able to whether and whether battery charge is finished information such as charging and shows.
Below, with reference to Fig. 1 a to Fig. 1 c this is described in detail.
At first, with reference to 1a and Fig. 1 b as can be seen, show charging/battery status according to the prior art system main frame in order to utilize LED, just directly LED is driven or utilizes state (Status) signal of charger (Charger) output that LED is driven by central processing unit (CPU).Therefore, under sleep state (Sleep) and time-out (Suspend) pattern, just can not show, and be merely able to relevant information be shown by opening (Solid) signal to flicker (Blink) signal.
Therefore, when using the LED of red green 2 kinds of colors, just be merely able to show redness, Zhu Huangse, green is closed (OFF) these 4 kinds of states.
In addition, shown in Fig. 1 c, external charger (Charger) according to prior art makes battery (Battery) charging under the control of microprocessor (MiCOM), the charging status information of described battery can transmit to microprocessor, and described microprocessor (MiCOM) has the structure that the state information of battery can be shown by LED.
Though the battery charging state display unit according to prior art can show flicker (Blink) signal.But flicker (Blink) signal is generally considered to be to the user and sounds a warning, and when the level of charge of battery hanged down, except can glimmer (Blink), other a lot of information all can not show.
Therefore, just can not confirm according to prior art (Fig. 1 a to Fig. 1 c) user (Turn-On) battery charge degree of not opening display unit.
Summary of the invention
The present invention is for the device that provides a kind of LED of utilization to show battery charging state is provided, and it utilizes the LED of color more than 2 kinds or 2 kinds and the light of each LED is made up, thereby the user can be distinguished the level of charge of battery.
To achieve these goals, the device that utilizes LED to show battery charging state of the present invention utilizes the LED of color more than 2 kinds or 2 kinds to show battery charging state, comprises following several sections: battery; By described battery receive battery charging state information (hereinafter to be referred as ' battery information '), utilize described battery information also average current value to be controlled then, simultaneously the led controller that the brightness of each color LED is regulated by pulse-width modulation (Pulse Width Modulation:PWM) mode; And the control signal that receives the output of described led controller, and LED portion to showing with the corresponding color of battery information.
In addition, the device that utilizes LED to show battery charging state of the present invention, also comprise following several sections: have by described led controller reception battery information, and it is presented on the picture by GUI, control signal that will be relevant with battery charge is to the central processing unit (CPU) of the function of charger transmission then; And under the control of described central processing unit, make battery charge, and with the charger of described battery charge information (battery information) to the led controller transmission.
When described battery was non intelligent battery, just the information with battery converted digital signal to by analog to digital converter (ADC), and it is transmitted to led controller.
Described LED portion comprises following several sections: its drain electrode (Drain) is connected with supply voltage (Vcc), the mos field effect transistor of duty ratio (Duty) input of the PWM mode that its grid (Gate) will be by led controller; The resistance that the one side is connected with the source electrode (Source) of described mos field effect transistor (MOSFET); And the one side is connected the light-emitting diode (LED) that its opposite side is connected with earthed voltage (Vss) with the opposite side of described resistance.
The clock of described led controller (CLK) terminal be connected with door (And Gate), by described with the door clock pulse signal can be imported with the signal whether charger is connected.
In sum, charging of the present invention shows that LED shows by 2 looks or 3 looks, but can show by multiple color.Therefore, even do not open main frame, the user also can know the battery charge situation.
In addition, battery charging state display unit of the present invention even be under sleep state or the park mode, is not opened central processing unit (CPU), can relevant information be shown by the LED of multiple color yet.Thereby just can reduce the load of system.
Description of drawings
Fig. 1 a to Fig. 1 c is that the LED that utilizes of prior art shows the device schematic diagram of battery charging state;
Fig. 2 is the electric current of (supposition) LED under the certain condition of the present invention and the coordinate diagram of brightness;
Fig. 3 is that the LED that utilizes of one embodiment of the present of invention shows the schematic representation of apparatus of battery charging state;
Fig. 4 is the detailed maps of the battery charging state display unit of Fig. 3;
Fig. 5 is pwm signal value (duty ratio) schematic diagram of the LED brightness of one embodiment of the present of invention;
Fig. 6 is the schematic diagram of the clock gate (Clock Gating) of one embodiment of the present of invention.
Reference numeral
10: battery 20: charger
30:LED controller (Controller) 40: central processing unit (CPU)
50: analog to digital converter (ADC) 60:LED portion
70: with door (And Gate)
Embodiment
Below with reference to accompanying drawings embodiments of the invention are elaborated.
Fig. 2 is the electric current of (supposition) LED under the certain condition of the present invention and the coordinate diagram of brightness;
The present invention is based on hypothesis " brightness of LED shows by the electric current that flows by linear scale in LED ".
In fact, the brightness of LED and electric current are not to be linear relationship fully.But, as shown in Figure 2, it has between linear zone.Therefore, just can accurately control if utilize between described linear zone brightness.That is to say,, just can form a plurality of Neutral colour with 2 kinds of colors if use LED that each current value is regulated with color more than 2 kinds.Below, will be described in detail this.
In addition, the present invention is based on hypothesis " reaction speed of people's eyes is slower than the PWM of dozens of KHz ".Therefore, in the present invention, average current value is just controlled and can be regulated the brightness of LED by utilizing described PWM.
Brightness and the electric current of described LED are proportional, directly described current value are controlled suitable trouble.Therefore, if utilizing PWM paired pulses amplitude regulates, as Fig. 5 (below, to be described in more details Fig. 5 declaratives) shown in, can in the long cycle, regulate average current value, if the current value that utilizes PWM that current value is controlled is identical with current value and the average current value directly current value controlled, then people's eyes will judge that its value is identical.
Fig. 3 is that the LED that utilizes of one embodiment of the present of invention shows the schematic representation of apparatus of battery charging state.
With reference to Fig. 3 as can be seen, utilize LED to show that the device of battery charging state comprises battery 10, led controller 30 and LED portion 60 according to the present invention.
Situation to LED with 2 kinds of colors is illustrated in the present embodiment.
Described battery 10 can be intelligent battery, also can be non intelligent battery.So-called intelligent battery is meant the battery that uses in PDA(Personal Digital Assistant) or notebook computer.
When described battery 10 is intelligent battery, for can by led controller 30 level of charge of electrolytic cell 10, preferably DQ line or SMB (SystemManagement Bus) bus with 1-wire protocol (Protocol) couples together.
In addition, when described battery 10 is non intelligent battery, preferably battery electric quantity is converted to digital value by analog to digital converter (Analog To Digital Converter:ADC) 50.
Described led controller 30 can utilize pulse-width modulation (Pulse Width Modulation:PWM) mode to modulate the battery information by battery 10 transmission.
Then, calculate the mean value of battery information (showing) by current value by pulse-width modulation, and with the input signal of described mean value as LED portion 60.Below, be described in detail with reference to table 1 and Fig. 5.
Described LED portion 60 can have various ways, as an one example, as shown in Figures 3 and 4, it can be made of following several sections: its drain electrode (Drain) is connected with power source voltage Vcc, its grid (Gate) will be by led controller mos field effect transistor (MOSFET) M1 of duty ratio (Duty) input of PWM mode, M2, one side and described mos field effect transistor M1, the resistance R 1 that the source electrode of M2 (Source) is connected, R2, and one side and described resistance R 1, the opposite side of R2 is connected, the LED that its opposite side is connected with earthed voltage Vss.
In last this embodiment, LED has 2 kinds of colors, and mos field effect transistor, resistance and light-emitting diode form 2 pairs respectively.
Fig. 4 is the detailed maps to battery charging state display device structure shown in Figure 3.
With reference to Fig. 4 as can be seen, battery charging state display unit of the present invention comprises: battery (Battery) 10, led controller (Controller) 30, LED portion 60, central processing unit (CPU) 40 and charger (Charger) 20.
To described battery 10, led controller 30 and LED portion 60 are illustrated in the process that Fig. 3 is described, and therefore here just have not been elaborated.
Described CPU40 can show on picture by GUI by the information of described led controller 30 reception batteries 10 and with it.Simultaneously, the control signal of relevant battery 10 chargings can also be transmitted to charger 20.
Described charger 20 can make battery 10 charge under the control of CPU, and battery charge information (battery information) is transmitted to led controller 30.
Fig. 5 is pwm signal value (duty ratio) schematic diagram of the LED brightness of one embodiment of the present of invention.
With reference to Fig. 5 as can be seen, solid line is represented the current value that described led controller 30 generates by the PWM mode, and dotted line is represented the mean value of described current value.
Pwm signal value when the 1st to the 4th coordinate represents that LED reaches high-high brightness successively (100% duty ratio), pwm signal value when LED reaches intermediate luminance (50% duty ratio), pwm signal value when LED reaches than low-light level (20% duty ratio), the pwm signal value when LED closes (0% duty ratio).
That is to say, can regulate the red LED of LED portion and the brightness of green LED according to described dutyfactor value.Therefore, by the color that (adjustment) just can demonstrate regulation is suitably regulated in described brightness with LED (red LED, green LED) of 2 kinds of colors.Below, will specifically represent by table 1.
Table 1 is the duty ratio demonstration of each control signal is passed through in expression when using the LED with 2 kinds of colors color and a charged state thereof.
＜table 1〉duty ratio by each control signal color and the charged state (situations of 2 kinds of colors) thereof that show
| The duty ratio of red LED control signal | The duty ratio of green LED control signal | The led color that shows | Charged state |
| 0％ | 100％ | Green | Charging fully |
| 25％ | 75％ | Green-yellow (Greenish Yellow) | (charged 75%) in the charging |
| 50％ | 50％ | Yellow | (charged 50%) in the charging |
| 75％ | 25％ | Reddish yellow (Reddish Yellow) | (charged 25%) in the charging |
| 100％ | 0％ | Red | In the charging (uncharged fully) |
| 0％ | 0％ | Close (Turn-Off) | Uncharged |
Shown in above-mentioned table 1, led controller of the present invention can generate the duty ratio of redness as shown in table 1 or green LED control signal, and described duty ratio can impose on the LED portion of respective color.So just can show various charged states by different colors.
That is to say, when battery is uncharged, red LED and green LED are in (OFF) state of closing (duty ratio of red LED and green LED is respectively 0%), in charging process, when being in complete uncharged state, battery shows pure redness (duty ratio of red LED is 100%, and the duty ratio of green LED is 0%).
In addition, when being in complete charged state, battery shows that (duty ratio of red LED is 0 to pure green, the duty ratio of green LED is 100), when mediating state, battery then shows green and red Neutral colour (duty ratio of red LED is 50%, and the duty ratio of green LED is 50%) according to the battery charge degree.
In above-mentioned declarative procedure, regulate if will be used for the resistance value of LED portion, when the duty ratio of red LED is 50%, the duty ratio of green LED is 50% o'clock, LED just is shown as yellow (Yellow).
Fig. 6 is the schematic diagram of the clock gate (Clock Gating) of one embodiment of the present of invention.
Circuit shown in Figure 6 is that consumed current reaches minimized circuit when making described led controller be in sleep (Sleep) state or park mode.
That is to say, with clock (CLK) terminal of described led controller be connected with door (And Gate), import with the signal whether charger is connected with goalkeeper's clock pulse signal by described.
As mentioned above, by using clock gate (Clock gating) mode, current sinking hardly just when charger does not connect when charger connects, just can use corresponding charging display packing.
In addition, the present invention equally also is applicable to external charger.If want the LED display packing of using the present invention to propose, more satisfactory situation be exactly externally in the charger setting can show battery charge degree and controller (Controller) that can output pwm signal.
By above-mentioned explanation, those skilled in the art can carry out various change and modification fully in the scope that does not depart from the technology of the present invention thought.
Therefore, the technical scope of this invention is not limited to the content of specification, must determine its technical scope according to the claim scope.
Claims (5)
1. a device that utilizes LED to show battery charging state utilizes the LED of color more than 2 kinds or 2 kinds to show battery charging state, it is characterized in that, comprises as the lower part:
Battery;
Receive battery charging state information by described battery, utilize described battery charging state information then and average current value is controlled, simultaneously the led controller that the brightness of the LED of each color is regulated by pulse width modulation mode;
And the control signal that receives the output of described led controller, and LED portion to showing with the corresponding color of battery charging state information.
2. the device that utilizes LED to show battery charging state as claimed in claim 1 is characterized in that, also comprises:
Have by described led controller reception battery charging state information, and it is presented on the picture by GUI, control signal that will be relevant with battery charge is to the CPU of the function of charger transmission then;
And under the control of described CPU, make battery charge, and with the charger of described battery charging state information to the led controller transmission.
3. the device that utilizes LED to show battery charging state as claimed in claim 1 or 2 is characterized in that,
When battery is non intelligent battery, just can converts the charging status information of battery to digital signal by analog to digital converter, and it is transmitted to led controller.
4. the device that utilizes LED to show battery charging state as claimed in claim 3 is characterized in that, described LED portion comprises as the lower part:
Drain electrode is connected with supply voltage, the mos field effect transistor that the duty ratio of the PWM mode that grid will be by led controller is imported;
The resistance that one side is connected with the source electrode of described mos field effect transistor;
And one side be connected the LED that opposite side is connected with earthed voltage with the opposite side of described resistance.
5. the device that utilizes LED to show battery charging state as claimed in claim 4 is characterized in that,
The clock terminal of described led controller be connected with door, import with the signal whether charger is connected with goalkeeper's clock pulse signal by described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100976724A CN101192687A (en) | 2006-11-22 | 2006-11-22 | Device for displaying battery charged state by LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100976724A CN101192687A (en) | 2006-11-22 | 2006-11-22 | Device for displaying battery charged state by LED |
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| Publication Number | Publication Date |
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| CN101192687A true CN101192687A (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100976724A Pending CN101192687A (en) | 2006-11-22 | 2006-11-22 | Device for displaying battery charged state by LED |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984645A (en) * | 2010-11-04 | 2011-03-09 | 华为终端有限公司 | Communication device, task prompting unit and method |
| CN101764271B (en) * | 2010-02-24 | 2012-01-04 | 衡阳北方光电信息技术有限公司 | Intelligent charging/discharging method and device of intelligent battery pack |
| CN104902616A (en) * | 2015-04-07 | 2015-09-09 | 广东美的暖通设备有限公司 | Electric control board LED lamp state display method, electric control board LED lamp state display device and electric control board |
| CN107078523A (en) * | 2014-10-21 | 2017-08-18 | Nec平台株式会社 | The set charger and the charging method of terminal installation of terminal installation |
| CN113167836A (en) * | 2018-10-02 | 2021-07-23 | 罗伯特·博世有限公司 | Display device for battery pack |
-
2006
- 2006-11-22 CN CNA2006100976724A patent/CN101192687A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764271B (en) * | 2010-02-24 | 2012-01-04 | 衡阳北方光电信息技术有限公司 | Intelligent charging/discharging method and device of intelligent battery pack |
| CN101984645A (en) * | 2010-11-04 | 2011-03-09 | 华为终端有限公司 | Communication device, task prompting unit and method |
| WO2012059029A1 (en) * | 2010-11-04 | 2012-05-10 | 华为终端有限公司 | Communication equipment, task indication unit and method |
| CN107078523A (en) * | 2014-10-21 | 2017-08-18 | Nec平台株式会社 | The set charger and the charging method of terminal installation of terminal installation |
| CN104902616A (en) * | 2015-04-07 | 2015-09-09 | 广东美的暖通设备有限公司 | Electric control board LED lamp state display method, electric control board LED lamp state display device and electric control board |
| CN113167836A (en) * | 2018-10-02 | 2021-07-23 | 罗伯特·博世有限公司 | Display device for battery pack |
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Open date: 20080604 |