CN100362724C - Apparatus and method for multi function products effectively utilizing battery electricity quantity - Google Patents
Apparatus and method for multi function products effectively utilizing battery electricity quantity Download PDFInfo
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- CN100362724C CN100362724C CNB2005100645784A CN200510064578A CN100362724C CN 100362724 C CN100362724 C CN 100362724C CN B2005100645784 A CNB2005100645784 A CN B2005100645784A CN 200510064578 A CN200510064578 A CN 200510064578A CN 100362724 C CN100362724 C CN 100362724C
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Abstract
The present invention relates to a device and a method capable of effectively utilizing the electric quantity of batteries for a multifunctional product. The device which uses batteries to supply voltage comprises a microprocessor and a voltage regulator, wherein the microprocessor is used for monitoring the voltage of batteries, and the microprocessor sends out a low-voltage signal when the voltage of the batteries is lower than a preset value. The input end of the voltage regulator receives the voltage of the batteries, and the control end of the voltage regulator is coupled with the microprocessor; the voltage regulator is used for regulating to a first voltage output and for regulating to a second voltage output when the low-voltage signal is received.
Description
Technical field
The present invention relates to a kind of method and apparatus of effective use battery electric quantity, and be particularly related to a kind of apparatus and method of effectively utilizing battery electric quantity of multifunctional product.
Background technology
Along with the progress of science and technology, general consumption electronic products, as mobile phone, PDA(Personal Digital Assistant), the carry-on dish of MP3 or the like, trend miniaturization gradually, lightening and power consumption is low and multi-functional.
Fig. 1 is known multifunctional product power supply supply framework embodiment, sees also Fig. 1.Fig. 1 is an example with the mobile phone with MP3 walkman and camera function, comprise battery 100 among Fig. 1, voltage regulator 102, MP3 walkman functional module 104, digital camera functionality module 106 and function of cellular phone module 108, wherein, suppose that MP3 walkman functional module 104 parts need supply voltage 3.0V, and mobile phone and digital camera functionality module are when needing 3.3V, and suppose that battery 100 is full of electricity and is 3.7V, at this moment, for consideration to product cost and power supply design, usually voltage regulator 102 can be designed to single group of power supply output 3.3V, and the MP3 walkman functional module 104 that only need use power supply 3.0V is also supplied 3.3V, when usually the voltage of battery 100 is used about 3.5V, when voltage regulator 102 can't convert 3.5V to stable 3.3V, can be with this product forced shutdown, yet this moment, the inside battery capacitance approximately also is left about half, that is to say, the MP3 walkman functional module 104 that only needs to use power supply 3.0V to get final product operate as normal also can't be used the indirect abundant application that has influence on product service time and battery electric quantity.
Summary of the invention
The device that effectively utilizes battery electric quantity that the purpose of this invention is to provide a kind of multifunctional product is in order to make full use of battery electric quantity.
Another object of the present invention provides a kind of method of effectively utilizing battery electric quantity of multifunctional product, in order to prolong product service time.
Another purpose of the present invention provides a kind of multifunctional product, in order to be lower than certain degree when battery electric quantity, still can provide user's partial function.
The present invention proposes a kind of device that effectively utilizes battery electric quantity of multifunctional product, and this device uses battery supplied voltage, and it comprises microprocessor and voltage regulator.Wherein, microprocessor when cell voltage is lower than preset value, is sent low voltage signal in order to the voltage of monitoring battery.And the voltage regulator input couples battery, and its control end couples microprocessor, in order to be adjusted into the output of first voltage, when receiving above-mentioned low voltage signal, is adjusted into the output of second voltage.
According to the device that effectively utilizes battery electric quantity of the described multifunctional product of preferred embodiment of the present invention, above-mentioned second voltage is less than first voltage.
The present invention proposes a kind of method of effectively utilizing battery electric quantity of multifunctional product, and the method comprises the following steps, is first predeterminated voltage with the voltage transitions of battery.The voltage of monitoring battery.When the voltage of battery drops to preset value, be converted to second predeterminated voltage, wherein, the second predeterminated voltage non zero potential.
According to the method for effectively utilizing battery electric quantity of the described multifunctional product of preferred embodiment of the present invention, above-mentioned second predeterminated voltage is less than first predeterminated voltage.
The present invention proposes a kind of multifunctional product, it comprises a plurality of modules, and its outward appearance can realize by one of in the above-mentioned module, the part of above-mentioned module need be used first voltage at least, another part of above-mentioned module need use second voltage at least, this product comprises that microprocessor in order to continue to monitor the voltage of battery, when cell voltage is lower than preset value, sends low voltage signal.The voltage regulator input receives the voltage of this battery, and its control end couples microprocessor, in order to be adjusted into the output of first voltage, when receiving low voltage signal, is adjusted into the output of second voltage.
The present invention is because of adopting the method for monitoring cell voltage, and when battery when voltage reduces along with use, make the less voltage of voltage regulator output supply the functional module that needs low voltage, therefore can make full use of battery electric quantity and prolong product service time.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1 shows that known multifunctional product power supply supply Organization Chart.
Figure 2 shows that the internal circuit block diagram of the device that effectively utilizes battery electric quantity of multifunctional product of the present invention and this product.
Figure 3 shows that the experimental data curve figure that confirms that the present invention can effectively utilize battery electric quantity to do.
Figure 4 shows that the method flow diagram that effectively utilizes battery electric quantity of multifunctional product of the present invention and this product.
The main element description of symbols
100,210: battery
102,214: voltage regulator
104,200:MP3 walkman functional module
106,202: the digital camera functionality module
108,208: the function of cellular phone module
204: the digital camera functional module
206: the recording pen functional module
212: microprocessor
PWM: integrated circuit component
M1: transistor switch
R1, R2, R3, R4: resistance
401: with the voltage transitions of battery is first predeterminated voltage
402: the voltage of monitoring battery
403: when the voltage of battery drops to preset value, be second predeterminated voltage with the voltage transitions of battery
Embodiment
Employed in an embodiment of the present invention multifunctional product, and internal circuit block diagram such as Fig. 2 of the device that effectively utilizes battery electric quantity of this product please refer to Fig. 2.In this embodiment, 5 functional modules have been comprised altogether, be respectively MP3 walkman functional module 200, digital camera functionality module 202, digital camera functional module 204, recording pen functional module 206 and function of cellular phone module 208, wherein, the outward appearance of product can be by realizing one of in the above-mentioned module, for example the mobile phone external form is with the MP3 function, and the person of ordinary skill in the field should understand, so will not give unnecessary details.In addition, also comprise a battery 210, a microprocessor 212 and a voltage regulator 214 in this embodiment.Wherein, voltage regulator 214 uses a buck (Buck) transducer to replace in the present embodiment, yet, any person of ordinary skill in the field, should understand, voltage regulator 214 in the present embodiment can replace with other voltage regulator, for example liter-buck (Buck-Boost) transducer, forward type (forward) transducer, flyback (flyback) transducer and ic-type voltage regulator on the market.
In the embodiment of Fig. 2 of the present invention, suppose that battery is full of electricity and is 4.0V, suppose that in addition MP3 walkman functional module 200, recording pen functional module 206 and function of cellular phone module 208 minimum operating voltages are 3.0V, digital camera functionality module 202 and digital camera functional module 204 minimum operating voltages are 3.3V in addition.Voltage regulator 214 receives cell voltage, integrated circuit component PWM utilizes pulse width modulation oxide-semiconductor control transistors switch M1 ON time, and utilize resistance R 1 and R2 dividing potential drop in output end vo, input to control end Con by R3, control end Con receives reference voltage, and regulate conversion according to reference voltage, one group of 3.3V voltage that single stable is provided is to all functional modules 200,202,204,206 and 208.Among Fig. 2, resistance R 4 couples microprocessor 212 in addition.Microprocessor 212 continues to monitor cell voltage, when cell voltage is still stable for example more than the 3.5V, voltage regulator 214 makes when still can be exported stable 3.3V, the pin that microprocessor 212 couples resistance R 4 is a high impedance, just R4 there is no effect, and this moment, all functions still all can be used.
When microprocessor 212 monitors battery 210 voltages when falling 3.5V, this moment, voltage regulator 214 can't normally arrive 3.3V with voltage transitions, product of the present invention can enter low-voltage state in the display screen demonstration earlier, and digital camera functionality and digital camera function can't be used.At this moment, microprocessor can cut out digital camera functionality module 202 and digital camera functional module 204, and it is not worked.And give voltage regulator 214 by resistance R 4 output LOW voltage signal LP, voltage regulator receives that low voltage signal LP just comes down to output voltage 3.0V with supply MP3 walkman functional module 200, recording pen functional module 206 and function of cellular phone module 208, make when cell voltage drops to 3.5V, these three functional modules still can be used, when cell voltage drops to 3.2V, the ability powered-down.
The experimental data curve figure of Fig. 3 for confirming that the present invention can effectively utilize battery electric quantity to do, please refer to Fig. 3, when battery be full of electricity do not use out-of-date, cell voltage is 3.9V～4.2V, when using 3.5V, battery electric quantity still also has about 50%, when cell voltage is fallen 3.2V, approximately only is left about 10% electric weight.The present invention effectively uses 3.2V with battery just can use 40% electric weight more, prolongs product service time.
According to the foregoing description, the present invention proposes the method for effectively utilizing battery electric quantity of a multifunctional product, please refer to Fig. 4 flow chart and Fig. 2 circuit, step comprises that the voltage transitions with battery 210 is the voltage (step 401) of the first predeterminated voltage 3.3V with the supply functional module.The voltage (step 402) of microprocessor 212 monitoring batteries 210.When the voltage of battery drops to preset value such as 3.5V, on display screen, show low-voltage, and to make voltage regulator 214 conversion output voltages be the second predeterminated voltage 3.0V (step 403).
In sum, in the method for the present invention because of employing monitoring cell voltage, and when battery when voltage reduces along with use, make the less voltage of voltage regulator output supply the functional module that needs low voltage, therefore can make full use of battery electric quantity and prolong product service time.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limiting the present invention, and without departing from the spirit and scope of the present invention, when can doing a little change and improvement, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (11)
1. the device that effectively utilizes battery electric quantity of a multifunctional product, this device uses battery supplied voltage, it is characterized in that comprising:
Microprocessor in order to monitor the voltage of this battery, when cell voltage is lower than preset value, is sent low voltage signal; And
Voltage regulator comprises input, control end and output, and this input couples above-mentioned battery, and this control end couples above-mentioned microprocessor, in order to be adjusted into the output of first voltage, when receiving above-mentioned low voltage signal, is adjusted into the output of second voltage.
2. the device that effectively utilizes battery electric quantity of multifunctional product according to claim 1 is characterized in that above-mentioned second voltage is less than this first voltage.
3. the device that effectively utilizes battery electric quantity of multifunctional product according to claim 1 is characterized in that above-mentioned voltage regulator also comprises:
First resistance, first end of this first resistance couples above-mentioned output; And
Second resistance, first end of this second resistance couples second end of this control end and above-mentioned first resistance, the second end ground connection of this second resistance,
Wherein above-mentioned voltage regulator is monitored the voltage of second end of this first resistance to stablize above-mentioned first voltage with above-mentioned control end.
4. the device that effectively utilizes battery electric quantity of multifunctional product according to claim 3 is characterized in that also comprising:
The 3rd resistance, first termination of the 3rd resistance is received above-mentioned low voltage signal, and second end of the 3rd resistance couples above-mentioned control end; And
The 4th resistance, first end of the 4th resistance couples above-mentioned control end, and second end of the 4th resistance couples above-mentioned microprocessor.
5. the method for effectively utilizing battery electric quantity of a multifunctional product is characterized in that comprising:
With the voltage transitions of battery is first predeterminated voltage;
The voltage of monitoring battery; And
When the voltage of battery drops to preset value, be converted to second predeterminated voltage,
Wherein, above-mentioned second predeterminated voltage is the non zero potential less than described first predeterminated voltage.
6. the method for effectively utilizing battery electric quantity of multifunctional product according to claim 5 is characterized in that above-mentioned first predeterminated voltage is less than described preset value.
7. the method for effectively utilizing battery electric quantity of multifunctional product according to claim 5 is characterized in that also comprising demonstrating low voltage signal.
8. a multifunctional product is characterized in that comprising a plurality of modules, and its outward appearance can realize that the part of above-mentioned module need be used first voltage at least by one of in the above-mentioned module, and another part of above-mentioned module need use second voltage at least, and this product comprises:
Microprocessor in order to the voltage of monitoring to the battery of this product power supply, when cell voltage is lower than preset value, is sent low voltage signal; And
Voltage regulator comprises input, control end and output, and this input receives the voltage of above-mentioned battery, this control end couples above-mentioned microprocessor, in order to be adjusted into above-mentioned first voltage output, when receiving above-mentioned low voltage signal, be adjusted into above-mentioned second voltage output.
9. multifunctional product according to claim 8 is characterized in that above-mentioned second voltage is less than above-mentioned first voltage.
10. multifunctional product according to claim 8 is characterized in that also comprising display screen, in order to show low-voltage state.
11. multifunctional product according to claim 8 is characterized in that above-mentioned module comprises at least one in MP3 walkman functional module, digital camera functionality module, function of cellular phone module, digital camera functional module, the recording pen functional module.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100645784A CN100362724C (en) | 2005-04-15 | 2005-04-15 | Apparatus and method for multi function products effectively utilizing battery electricity quantity |
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| CNB2005100645784A CN100362724C (en) | 2005-04-15 | 2005-04-15 | Apparatus and method for multi function products effectively utilizing battery electricity quantity |
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| CN1848588A CN1848588A (en) | 2006-10-18 |
| CN100362724C true CN100362724C (en) | 2008-01-16 |
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| CN1848588A (en) | 2006-10-18 |
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