CN101894988B - MEMS composite micro-energy system power supply - Google Patents
MEMS composite micro-energy system power supply Download PDFInfo
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- CN101894988B CN101894988B CN2010102280329A CN201010228032A CN101894988B CN 101894988 B CN101894988 B CN 101894988B CN 2010102280329 A CN2010102280329 A CN 2010102280329A CN 201010228032 A CN201010228032 A CN 201010228032A CN 101894988 B CN101894988 B CN 101894988B
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000000446 fuel Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 22
- 238000013461 design Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 230000006399 behavior Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004297 night vision Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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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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- Fuel Cell (AREA)
- Photovoltaic Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
一种MEMS复合微能源系统电源包括MEMS微型直接甲醇燃料电池、MEMS微型太阳能电池、MEMS微型超级电容器单元、超低功耗温度传感器LM75B、微处理器ATmega168p、电源管理芯片MAX1586B和外壳，超低功耗温度传感器LM75B紧贴在MEMS微型直接甲醇燃料电池上；MEMS微型直接甲醇燃料电池与电源管理芯片MAX1586B的主电源管脚连接，MEMS微型太阳能电池与电源管理芯片MAX1586B的备用电源管脚连接，MEMS微型直接甲醇燃料电池和MEMS微型超级电容器单元并联连接，电源管理芯片MAX1586B与8位AVR系列微处理器ATmega168p连接。本发明将多种不同类型的MEMS微能源复合到一个电源模块中，整体提高了MEMS微能源的工作性能和稳定性；提供多个标准输出；具有轻巧便携，使用寿命长占用空间小，系统自身功耗低；绿色环保，可重复利用的特点。
A MEMS composite micro-energy system power supply includes MEMS micro-direct methanol fuel cells, MEMS micro-solar cells, MEMS micro-supercapacitor units, ultra-low power consumption temperature sensor LM75B, microprocessor ATmega168p, power management chip MAX1586B and shell, ultra-low power The consumption temperature sensor LM75B is closely attached to the MEMS micro direct methanol fuel cell; the MEMS micro direct methanol fuel cell is connected to the main power pin of the power management chip MAX1586B, the MEMS micro solar cell is connected to the backup power pin of the power management chip MAX1586B, and the MEMS The miniature direct methanol fuel cell and the MEMS miniature supercapacitor unit are connected in parallel, and the power management chip MAX1586B is connected with the 8-bit AVR series microprocessor ATmega168p. The invention combines multiple different types of MEMS micro-energy into one power module, which improves the working performance and stability of the MEMS micro-energy as a whole; provides multiple standard outputs; is light and portable, has a long service life and occupies a small space, and the system itself Low power consumption; environmental protection, reusable features.
Description
(1) technical field
The present invention relates to the little energy field of MEMS, be specifically related to a kind of MEMS composite micro-energy system power supply.
(2) background technology
The superior performance volume is the maximum characteristics of the little energy of MEMS for a short time; If separately the little energy of a kind of MEMS is carried out power management; Can't accomplish the maximum performance of advantage and the maximum constraints of shortcoming; If the little energy of multiple MEMS is combined into as a whole system and it is carried out power management effectively, will play the complementary effect of pluses and minuses each other.As the minitype portable energy, all there is its inherent advantage in MEMS micro fuel cell, MEMS micro solar battery, MEMS micro super capacitor unit, the miniature isotope battery of MEMS, MEMS microgenerator, MEMS minisize thermoelectric pond etc.It is its biggest advantage that the MEMS micro fuel cell has higher specific energy and energy conversion efficiency; The MEMS micro solar battery is simple in structure, pollution-free to be the interested main causes of people; MEMS micro super capacitor cell life parent long, that can provide transient high-current to obtain people look at, and the little energy of the MEMS of other type also all has the advantage of self.But; The miniature energy of each type also exist simultaneously can not and the shortcoming avoided; If the little energy of dissimilar MEMS is joined together to coordinate each other for the external world power supply to be provided; The shortcoming that can remedy each other each other also can further be optimized advantage each other, accomplishes the best configuration of resource, constitutes the power module of a super low-power consumption, small size, high reliability.This power module energy density height can normally use in rugged environment; Being highly suitable for miniaturized electronicss such as portable type electronic product, individual soldier radio station night vision device, microsensor, miniature actuator, is one of new forms of energy of most possible at present replacement traditional energy.This design is not with the simple connection in series-parallel of the little energy of dissimilar MEMS as the composite micro-energy system of portable energy source, and mainly there is following problem in the research to composite micro-energy system at present:
(1) work characteristics of the dissimilar little energy of MEMS and output characteristic have very big-difference, so need special circuit that it is adjusted before compound.
(2) the MEMS micro fuel cell can produce a large amount of heat in the course of the work, not only influences the service behaviour of micro fuel cell itself, and whole hybrid system is caused unnecessary influence.
(3) the little energy of MEMS is because effectively working volume is small, and power output is little with respect to common power, so electric power management circuit necessarily requires super low-power consumption.
(4) output of traditional portable formula power module is fixing, is unfavorable for the multi multiplexing of same power module, therefore needs the circuit of design low-power consumption to realize the output of multichannel normal voltage.
(5) traditional power module can work the mischief to environment, and does not have recycle property.
(3) summary of the invention
The purpose of this invention is to provide sharp a kind of employing super low-power consumption microprocessor, super low-power consumption programmable multifunctional power management chip, super low-power consumption temperature sensor and other related devices; The little energy of two or more dissimilar MEMS is carried out effective power management; The inner temperature sensor real time temperature that adopts of power module detects; Integral body has improved the service behaviour and the stability of the little energy of MEMS, has a kind of composite micro-energy system power supply of reusable edible property.
The objective of the invention is to realize like this: comprise MEMS micro direct methanol fuel battery, MEMS micro solar battery, MEMS micro super capacitor unit, super low-power consumption temperature sensor LM75B, 8 AVR series microprocessor ATmega168p, power management chip MAX1586B and shells; Shell is a rectangular shape; MEMS micro direct methanol fuel battery and MEMS micro super capacitor unit are installed in enclosure; The MEMS micro direct methanol fuel battery is installed near shell right side sidewall, and super low-power consumption temperature sensor LM75B is close on the MEMS micro direct methanol fuel battery; The right side sidewall of shell is provided with the heat radiation window; The shell top was provided with liquid/scarce liquid LED light and liquid injection port; Liquid injection port is connected with the MEMS micro direct methanol fuel battery; The front of shell is provided with the standard output controller, and the left side sidewall of shell is provided with the standard output interface, and the MEMS micro solar battery is installed on the shell of top, MEMS micro super capacitor unit; The MEMS micro direct methanol fuel battery is connected with the main power source pin of power management chip MAX1586B; The MEMS micro solar battery is connected with the stand-by power supply pin of power management chip MAX1586B, and MEMS micro direct methanol fuel battery and MEMS micro super capacitor unit are connected in parallel, and power management chip MAX1586B is connected with the standard output controller; The standard output controller is connected with the standard output interface; Power management chip MAX1586B is connected with 8 AVR series microprocessor ATmega168p, 8 AVR series microprocessor ATmega168p respectively with cross liquid/lack the liquid LED light, super low-power consumption temperature sensor LM75B is connected, 8 AVR series microprocessor ATmega168p and power management chip MAX1586B are welded on the circuit board.
The present invention also has following characteristics in addition:
1, described MEMS micro fuel cell mainly is responsible for extraneous electric, and is system self and extraneous electric under the situation of intensity of illumination deficiency; Power supply output is selected often to open out-put supply as system self power supply, and select to dispatch from the factory preset 3.3V, 2.5V are the Programmable Dynamic voltage output of resolution as output and 0.75V-1.4V scope 0.025V.
2, described super low-power consumption temperature sensor is LM75B, and super low-power consumption temperature sensor LM75B also is connected with the LED temperature indicator.
3, described power management chip MAX1586B passes through I
2C bus and 8 AVR series microprocessor ATmega168p carry out data communication.
4, described MEMS micro direct methanol fuel battery is as main power supply, and the MEMS micro solar battery is as accessory power supply.
5, described MEMS micro super capacitor unit comprises 2 MEMS micro super capacitors and balance protective circuit, and 2 MEMS micro super capacitors are connected in series, the balanced protection circuit with connect after 2 MEMS micro super capacitors be connected in parallel.
The invention has the advantages that:
(1) two kinds or the more how dissimilar little energy of MEMS are compound in the power module, design the working method under the varying environment according to characteristics separately.
(2) the inner temperature sensor real time temperature that adopts of power module detects, and integral body has improved the service behaviour and the stability of the little energy of MEMS;
(3) changed the single output present situation of conventional portable power supply, a plurality of standard outputs are provided;
(4) lightly portable, long service life;
(5) take up room for a short time, system's oneself power consumption is low;
(6) environmental protection can reuse.
(4) description of drawings
Fig. 1 is a MEMS composite micro-energy system power supply shell sketch map;
Fig. 2 is inner each the device layout vertical view of MEMS composite micro-energy system power supply;
Fig. 3 is inner each the device layout end view of MEMS composite micro-energy system power supply
Fig. 4 dust-proof type heat radiation window sketch map;
Fig. 5 power management chip and microprocessor connection layout;
Fig. 6 is a MEMS composite micro-energy system power supply theory diagram;
Wherein 1, the MEMS micro solar battery, 2, the standard output interface, 3, shell, 4, the standard output controller; 5, cross liquid/lack liquid LED light, 6, liquid injection port, 7, the heat radiation window, 8, the MEMS micro direct methanol fuel battery; 9, MEMS micro super capacitor unit, 10, super low-power consumption temperature sensor LM75B, 11, circuit board, 12, balancing circuit unit; 13, MEMS micro direct methanol fuel battery, 14, MEMS micro super capacitor unit, 15, the LED temperature indicator, 16, super low-power consumption temperature sensor LM75B; 17, MEMS micro solar battery, 18, power management chip MAX1586B, 19,8 AVR series microprocessor ATmega 168p, 20, the standard output controller; 21, standard output interface, 22, cross liquid/lack liquid LED light, 23, the LED temperature indicator.
(5) embodiment
Further specify according to accompanying drawing:
Comprise MEMS micro direct methanol fuel battery, MEMS micro solar battery, MEMS micro super capacitor unit, super low-power consumption temperature sensor LM75B, 8 AVR series microprocessor ATmega168p, power management chip MAX1586B and shells; Shell is a rectangular shape; MEMS micro direct methanol fuel battery and MEMS micro super capacitor unit are installed in enclosure; The MEMS micro direct methanol fuel battery is installed near shell right side sidewall, and super low-power consumption temperature sensor LM75B is close on the MEMS micro direct methanol fuel battery; The right side sidewall of shell is provided with the heat radiation window; The shell top was provided with liquid/scarce liquid LED light and liquid injection port; Liquid injection port is connected with the MEMS micro direct methanol fuel battery; The front of shell is provided with the standard output controller; The left side sidewall of shell is provided with the standard output interface, and the MEMS micro solar battery is installed on the shell of top, MEMS micro super capacitor unit, and the MEMS micro direct methanol fuel battery is connected with the main power source pin of power management chip MAX1586B; The MEMS micro solar battery is connected with the stand-by power supply pin of power management chip MAX1586B; MEMS micro direct methanol fuel battery and MEMS micro super capacitor unit are connected in parallel, and power management chip MAX1586B is connected with the standard output controller, and the standard output controller is connected with the standard output interface; Power management chip MAX1586B is connected with 8 AVR series microprocessor ATmega168p, and liquid/scarce liquid LED light, super low-power consumption temperature sensor LM75B are connected 8 AVR series microprocessor ATmega168p respectively with excessively.Described MEMS micro fuel cell mainly is responsible for extraneous electric, and is system self and extraneous electric under the situation of intensity of illumination deficiency; Power supply output is selected often to open out-put supply as system self power supply, and select to dispatch from the factory preset 3.3V, 2.5V are the Programmable Dynamic voltage output of resolution as output and 0.75V-1.4V scope 0.025V.Described super low-power consumption temperature sensor is LM75B, and super low-power consumption temperature sensor LM75B also is connected with the LED temperature indicator.Described power management chip MAX1586B passes through I
2C bus and 8 AVR series microprocessor ATmega168p carry out data communication.Described MEMS micro direct methanol fuel battery is as main power supply, and the MEMS micro solar battery is as accessory power supply.Described MEMS micro super capacitor unit comprises 2 MEMS micro super capacitors and balance protective circuit, and 2 MEMS micro super capacitors are connected in series, the balanced protection circuit with connect after 2 MEMS micro super capacitors be connected in parallel.
Sufficient relatively and the MEMS micro solar battery is produced satisfy system self when extraneous intensity of illumination; Comprise to the MEMS ultracapacitor and charging; When reaching the voltage request of external loading; Then this system's output and system self power supply are all provided by the MEMS micro solar battery, and this moment, MEMS micro fuel cell path was in closed condition.Along with extraneous intensity of illumination slowly weakens; The electric weight that the MEMS micro solar battery produces reduces gradually; Perhaps the increase causes voltage owing to external loading descends, when being reduced to a certain set point, and super low-power consumption programmable multifunctional power management chip and super low-power consumption microprocessor communication; Connect the MEMS micro fuel cell as power supply, system's output this moment and system self power supply are all provided by the MEMS micro fuel cell.When extraneous intensity of illumination met the demands once more, power supply converted the MEMS micro solar battery into by the MEMS micro fuel cell, successively circulation.When the both can not meet the demands, lack the liquid indicator light and light, related causes is searched in prompting.
The MEMS micro fuel cell in the course of the work, inside battery is because the electrolyte reaction can cause temperature raises, the performance of battery improves gradually, the performance that reaches 60 ℃ of batteries when temperature is best, temperature continues the rising performance and begins to descend.Place high sensitivity super low-power consumption temperature sensor LM75B near the MEMS micro fuel cell, the LED temperature indicator of super low-power consumption temperature sensor was lighted when temperature was higher than set point.
MEMS microsuper electric capacity can use under rated voltage in any parallel connection, but if needing to connect just can meet the demands, must consider it and all press problem.In addition, microsuper electric capacity is that the polarity device is arranged, and must be noted that the connection of its both positive and negative polarity in use.For fear of in use causing device failure, must design external balance protective circuit assist MEMS micro super capacitor unit co-operation because of operate miss.
Power management chip MAX1586B has the input of 2 road power supplys, the output of 7 road power supplys and over-voltage protecting function; Comprise the input of main power source and stand-by power supply, the output of 3 road DC/DC power supplys, the output of 3 route property stabilized voltage power supplys and one tunnel normal switch power supply output, the output of the two-way of comprising programmable voltage is wherein arranged.In order to reduce quiescent current, the main power supply of power management chip MAX1586B all has bypass " dormancy " LDO, when output current is very little, starts.In addition, this module can also be carried out the independently ON/OFF transformation of ownership, low battery voltages and low battery failure detects, resets and the ready output of power supply, reserce cell input with each power supply.According to the actual requirements, the power supply output of MAX1586B is selected to keep, and according to the power supply output that is kept; Reasonably design peripheral circuit; Remove unnecessary device as far as possible, reduce power loss to greatest extent, improve service behaviour; Make full use of the defencive function of self, avoid suffering the impact of outside too high voltages and cause device failure.
In a word, when the MEMS micro solar battery can satisfy power reguirements, the super low-power consumption microprocessor selected it in running order, was external loading and self system's power supply simultaneously.When it can not meet the demands, the super low-power consumption microprocessor was selected the power supply of MEMS micro fuel cell.Also can select correspondent voltage output according to different applications.When large power supply was gone in the outside misconnection of power module, output circuit was cut off in the protection module work of power management chip MAX1586B.Like this, just can guarantee that this operating time composite micro-energy system monocycle reaches maximum.
(1) according to the device layout of Fig. 1, can reach on the confined space and utilize at many levels, make the volume of this power module reach minimum.
(2) MEMS micro super capacitor unit is positioned between MEMS micro fuel cell and the electric power management circuit, can reduces temperature effectively the electric power management circuit Effect on Performance.
(3), adopt dust-proof type design heat radiation window, in time distribute heat and prevent the entering inside modules of dust to the little energy of heating such as MEMS micro fuel cell.
With the Multifunctional housing design of fine precision processing technology making composite micro-energy system power supply module, the design of power module heat radiation window, the layout type and the electric power management circuit design of inner each device of power module.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102280329A CN101894988B (en) | 2010-07-16 | 2010-07-16 | MEMS composite micro-energy system power supply |
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| CN2010102280329A CN101894988B (en) | 2010-07-16 | 2010-07-16 | MEMS composite micro-energy system power supply |
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| CN101894988B true CN101894988B (en) | 2012-03-07 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102540916B (en) * | 2010-12-21 | 2016-04-06 | 新奥科技发展有限公司 | energy terminal chip |
| CN103943873B (en) * | 2014-05-19 | 2015-11-18 | 哈尔滨工业大学 | MEMS methanol recapitalization fuel cell system |
| CN106549479B (en) * | 2016-12-06 | 2019-02-26 | 东北大学 | a composite energy system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436676A (en) * | 2008-11-28 | 2009-05-20 | 中国科学院上海微系统与信息技术研究所 | Flat-plate minitype direct alcohols fuel battery set and preparation method thereof |
| EP2132806A2 (en) * | 2007-03-30 | 2009-12-16 | The Regents of the University of Michigan | Deposited microarchitectured battery and manufacturing method |
| WO2010042594A1 (en) * | 2008-10-08 | 2010-04-15 | Infinite Power Solutions, Inc. | Environmentally-powered wireless sensor module |
| CN101325130B (en) * | 2008-05-22 | 2010-05-12 | 清华大学 | Polypyrrole micro-supercapacitor based on MEMS technology and manufacturing method thereof |
| CN101030655B (en) * | 2007-04-04 | 2010-07-07 | 天津大学 | Micro-battery structure and its production |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6821666B2 (en) * | 2001-09-28 | 2004-11-23 | The Regents Of The Univerosity Of California | Method of forming a package for mems-based fuel cell |
| US7603144B2 (en) * | 2003-01-02 | 2009-10-13 | Cymbet Corporation | Active wireless tagging system on peel and stick substrate |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2132806A2 (en) * | 2007-03-30 | 2009-12-16 | The Regents of the University of Michigan | Deposited microarchitectured battery and manufacturing method |
| CN101030655B (en) * | 2007-04-04 | 2010-07-07 | 天津大学 | Micro-battery structure and its production |
| CN101325130B (en) * | 2008-05-22 | 2010-05-12 | 清华大学 | Polypyrrole micro-supercapacitor based on MEMS technology and manufacturing method thereof |
| WO2010042594A1 (en) * | 2008-10-08 | 2010-04-15 | Infinite Power Solutions, Inc. | Environmentally-powered wireless sensor module |
| CN101436676A (en) * | 2008-11-28 | 2009-05-20 | 中国科学院上海微系统与信息技术研究所 | Flat-plate minitype direct alcohols fuel battery set and preparation method thereof |
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