CN202840653U

CN202840653U - Device with super-capacitor as energy storage medium

Info

Publication number: CN202840653U
Application number: CN 201220512156
Authority: CN
Inventors: 刘镇阳; 李文锋; 许建华; 陆敬筠; 王养森; 孙伟; 王伟; 刘辰成; 刘德田
Original assignee: NANJING MIDAN ELECTRONIC INFORMATION CO Ltd
Current assignee: NANJING MIDAN ELECTRONIC INFORMATION CO Ltd
Priority date: 2012-10-08
Filing date: 2012-10-08
Publication date: 2013-03-27
Anticipated expiration: 2022-10-08

Abstract

Disclosed is a device with a super-capacitor as an energy storage medium. A power system of the device with the super-capacitor as the energy storage medium provides required power of a global system for mobile communication (GSM) module, a 485 module, a Zigbee module, a wireless fidelity (WIFI) module and an audion isolation module. A universal asynchronous receiver/ transmitter (UART) of the GSM module, control signals and state signals of the GSM module are connected with one side of an andion isolation circuit, and the other side of the andion isolation circuit is connected with a microprocessor UART, the control signals and the state signals. Electrical level matching of signals between the GSM module and the microprocessor is solved through the audion isolation module. The microprocessor masters operation conditions of the GSM module through monitoring the state signals of the GSM module, communication failure of the GSM module can be timely handled through the control signals after being detected, wherein cold boot can be conducted on the GSM module. The microprocessor is connected with the UART and the control signals, wherein the UART and the control signals are adopted between the 485 module, the Zigbee module and the WIFI module.

Description

A kind of super capacitor is as the thing machine of energy-accumulating medium

Technical field

The utility model relates to the intelligent device in the Internet of Things, is specifically related to a kind of super capacitor that adopts and substitutes lithium battery as the thing machine of energy-accumulating medium.

Background technology

" Internet of Things concept " is on the basis of " the Internet concept ", its user side is extended and expands between any article and the article, carries out information exchange and a kind of network concept of communicating by letter, and realizes information mutual communication between people and thing, thing and the thing.Transducer is provided on the various real-world objects makes it have wisdom, the wisdom object is by the perception self of operation for embedded system specific program and external information, and perception is the process that people and thing, thing and thing carry out information mutual communication.

The wisdom object uses the connection intelligent terminals such as RS422/485 bus, fieldbus, CAN bus, ZigBee technology to be built into an intelligentized local thing contact system, give local thing connection system configuration corresponding internet interface, be connected on the Internet, realize that just the Internet is to the expansion of Internet of Things.

Mobile network's fast development, the portable terminal-cellphone subscriber who is applicable to the people is developed rapidly, and the function of mobile phone is in continuous enhancing, and movement is interconnected to be popularized, and current people have be unable to do without mobile phone.The appearance of wisdom object, must need to use a kind of mobile terminal device that the wisdom object uses-thing machine that is appropriate to, the difference of thing machine and mobile phone maximum is the object that uses, and causing one of can not be as mobile phone fast-developing bottleneck of thing machine is the battery that the thing machine uses.

The thing machine is to utilize the GSM network, and take gsm module as core, configuration MCU, communication interface and power supply etc. are applied to the mobile communication terminal device of real-world object, although the thing machine is mobile communication terminal device, it is relatively-stationary after installing.The thing machine is the remote controlled terminal for the people, the situation of reflection telemonitoring real-world object.Power supply is the power of all surveillance equipments of real-world object or system, and therefore, the monitoring of power failure (power failure) and warning are the functions of thing machine indispensability.

The thing machine is continued to use at first mobile phone and is adopted lithium battery as energy-accumulating medium, and by the checking of practical application, it is worthless as energy-accumulating medium that the finding machine uses lithium battery.As using the thing machine to report to the police in the city street lamp cable anti-theft alarm, it is few etc. that final because lithium battery low temperature discharges and recharges number of times not, fully, so that thing machine fault in actual application is too many, maintenance capacity is huge; Also because the lithium battery problem has reduced the reliability of equipment, lithium battery becomes one of Main Bottleneck that the thing machine applies in the household safety alarm system, and main cause is:

(1) the complete impulse electricity number of times of lithium battery can only restrict the life-span of equipment about 300 times, causes the maintenance of post facility huge, to such an extent as to the equipment that hindered carries out large scale application;

(2) discharging efficiency of lithium battery and ambient temperature have much relations, can't solve the application of low temperature environment for the equipment of outdoor round-the-clock application.

Super capacitor is that developed recently is planted large capacity energy-storage travelling wave tube fast, compare with common batteries, have the characteristics such as power density is high, the time that discharges and recharges is short, efficient is high, long service life, clean environment firendly, increasingly extensive in the application in the fields such as electric automobile, new forms of energy.

For the mobile terminal device that this real-world object of thing machine uses, super capacitor can replace lithium battery fully as the energy-accumulating medium of thing machine, the two be compared as follows:

1. 5. super capacitor has super wide temperature applicable range, usually can reach-40 ℃～85 ℃; And general battery is

-20℃～60℃。；

2. the super capacitor high rate during charging-discharging is superior, power density (Power Density) be lithium ion battery decades of times with

On;

3. to discharge and recharge the time short for super capacitor, and charging circuit is simple, need not current limliting and discharge and recharge control loop, memory-less effect.

Secondary cell is limited by charging and discharging currents, and the charging interval is long, generally need several hours to tens hours, and double electric layer capacitor is not subjected to charge-current limit, and quickly-chargeable can be full of in several seconds to tens seconds;

4. super capacitor has extra long life, discharges and recharges greater than 500,000 times, is 500 times of Li-Ion battery, be Ni-MH and

1000 times of Ni-Cd battery, if super capacitor is discharged and recharged 20 times every day, use can reach 68 years continuously.

Although super capacitor has many advantages, the application of super capacitor in the thing machine also exists following problem:

How to adopt super capacitor to replace lithium battery applications to the thing machine, break through because the lithium battery limitation causes the in actual applications low bottleneck of reliability of thing machine, this is the direction of art technology research.

The thing machine is that mobile phone is expanded the product that is applied to the wisdom object, and it is fixedly installed on the wisdom object, moves with the movement of wisdom object, has relatively-stationary characteristics; Take data communication as main, take into account voice and video between wisdom object and the thing machine; Because the wisdom of wisdom object is inadequate, the thing machine need to possess from the ability that detects GSM network, power supply, can realize selfreparing or warning to fault, realizes these functions, and energy-accumulating medium is thing machine indispensability.

The energy-accumulating medium of known substance machine is battery, and energy-accumulating medium-lithium battery that mobile phone uses is the foundation that thing machine designer continues to use.Although use lithium battery on the relevant mobile phone supporting to discharge and recharge device all very ripe, but because the thing machine is different from the use object of mobile phone, that is to say: the use of thing machine is to liking the wisdom object, the use of mobile phone is to liking the people, the wisdom of wisdom object also can't be compared with the people at present, there is serious defective in the lithium battery that causes generally using on the mobile phone in the application of thing machine, becomes the bottleneck that promotes thing machine reliability index.

Super capacitor is used for the special market between conventional electric capacity and the battery always, and along with the discovery of how new application, this special market is also in continuous growth.In data-storage applications, super capacitor is replacing battery, comprises 3.3V Memory Backup solid state hard disc (SSD), battery powered Portable industrial and Medical Devices, industrial alarms device and intelligent power meter.

The VBAT of gsm module adopts 3.4V to the single power supply of 4.5V in the thing machine.In some cases, bursting of signal transmission can cause voltage to fall, and at this moment the peak value of current loss can reach 2A, and therefore, power supply must can provide the electric current that enough arrives 2A.

Because the magnitude of voltage of super capacitor very low (3V is following), single super capacitor can not satisfy gsm module required voltage requirement (3.4V is to 4.5V) in the thing machine, therefore, needs two super capacitors to connect and could satisfy.Because the restriction of production technology, super capacitor can't be accomplished the evenly absolute of material in manufacture process, cause the dispersiveness of each super capacitor monomer parameter.The super capacitor of two tandem workings, there is difference in voltage on the different super capacitor monomers, i.e. two kinds of unhealthy conditions of overvoltage and under voltage.Overvoltage condition will shorten the life-span of super capacitor, can blast when serious, and be in the ultracapacitor of under-voltage state, and its capacity can not take full advantage of, and has waste.So must introduce technology of pressure equalization to 2 super capacitance group of series connection that the thing machine uses, with reliability and the utilance of raising super capacitor group, and the useful life of prolongation super capacitor.

A kind of simple solution is to use the Li Erte super capacitor charger scheme of insulting, LTC3226 is a noninductive super capacitor charger, power path controller with backup, use the input power of 2.5-5.5V to the super capacitor charging of two joint series connection, and charge to the super capacitor charging voltage able to programme of 2.5-5.3V.The automatic capacitance balance of this device and voltage clamping function can keep the voltage on the two joint super capacitors to equate.But carefully analyze the voltage clamp circuit of LTC3226, find that it is not suitable for using, and mainly is in the thing machine:

1. the outfit of LTC3226 charge pump is the maximum admissible of a 2.65V for the limiting voltage with any super capacitor two ends

The circuit of predeterminated voltage.Utilizing it to solve the thing machine, to use super capacitor be feasible as the charging of storage medium, if but consider from thing electromechanical source overall system, because LTC3226 is general-purpose device, for the definite application of thing machine parameter, not only need by after capacitance-resistance calculating, the debugging, could determine the peripheral circuit configuration of LTC3226, and use the reasons such as the power of LDO pressurizer of LTC3226 is little can't satisfy the power demands of thing machine, not use the LDO pressurizer of LTC3226 to cause waste.

2. LTC3226's is on the high side.

The utility model content

Provide a kind of for above problem the utility model and discharged and recharged that the time is short, efficient is high, the super capacitor of long service life, clean environment firendly is as the thing machine of energy-accumulating medium.The thing machine adopts super capacitor rather than lithium battery as energy-accumulating medium, proposes to solve two joint super capacitors and is connected on the cost effective method of using in the thing machine.

Provide the thing machine of a kind of super capacitor as energy-accumulating medium in order to overcome the above problems the utility model, it is characterized in that: comprise power-supply system, microprocessor, gsm module, 485 modules, Zigbee module, WIFI module, triode buffer circuit;

Power-supply system is microprocessor, gsm module, 485 modules, the Zigbee module, WIFI module and triode isolation module provide required power supply, the UART of gsm module, control signal links to each other with status signal one side with the triode buffer circuit, the another side of triode buffer circuit and microprocessor UART, control signal links to each other with status signal, solve signal level coupling between gsm module and the microprocessor by the triode buffer circuit, microprocessor is grasped gsm module ruuning situation by the status signal of monitoring gsm module, discovery gsm module communication abnormality is in time processed by control signal, comprise gsm module is implemented cold start-up, microprocessor and 485 modules, the Zigbee module, the UART that adopts between the WIFI module is connected with control signal.

Described power-supply system comprises power supply terminal, power adaptation module, super capacitance management module, electric voltage observation circuit, reset circuit, reduction voltage circuit, selection circuit;

External power supply is input to power adaptation module by power supply terminal, and the 5V of power adaptation module stable output is to super capacitance management module, electric voltage observation circuit, reset circuit and reduction voltage circuit; The super capacitance management module is to microprocessor, triode buffer circuit and select circuit that continual constant voltage source 3.3V is provided, and satisfies gsm module and the required VBAT3.6-4.2V of triode buffer circuit by microprocessor control output; The output state of electric voltage observation circuit out-put supply adaptation module is to microprocessor; Reset circuit produces the reset signal of microprocessor according to the output of power adaptation module; Reduction voltage circuit provides constant voltage source 3.3V to selecting circuit when power adaptation module is exported; Select circuit to select continual constant voltage source 3.3V or constant voltage source 3.3V as the power supply of 485 modules, Zigbee module and WIFI module by microprocessor control.

Described 485 modules are comprised of photoelectric isolating circuit, DC/DC buffer circuit, 485 chips, interface, 485 terminals, select the power supply of circuit output to link to each other with photoelectric isolating circuit with the input of DC/DC buffer circuit; The output of DC/DC buffer circuit links to each other with interface with photoelectric isolating circuit, 485 chips; The signal input of photoelectric isolating circuit links to each other with microprocessor, and the signal output of photoelectric isolating circuit links to each other with the signal input of 485 chips; The output of 485 chips links to each other with the input of interface; The output of interface links to each other with 485 terminals, and 485 terminals are connected to the ground.

Described super capacitance management module comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;

5V links to each other with charging circuit, voltage stabilizing circuit and automatic switching module, and the output of charging circuit links to each other with balancing circuitry, and the output of balancing circuitry links to each other with automatic switching module with super capacitor; The output of voltage stabilizing circuit links to each other with control switch, constant voltage circuit and automatic switching module; The output VBAT of control switch is in check; The 3.3V that constant voltage circuit output is constant.

Described charging circuit is comprised of E4, P3, E5 and R6, and the anode of E4 links to each other with the VCC of P3 and receives+5V, and the negative terminal of E4 is connected with ground; The FB of P3 links to each other with the E5 anode with BAT and exports 4.2V, and the end of the negative terminal of the TEMP of P3, GND, E5, R6 links to each other and receives ground, and the IR of P3 links to each other with the other end of R6.

Described balancing circuitry is comprised of P6, P7, P8, P9, R13, R14, R15, R16, BAT+ is connected to the end of S, the R13 of P7, the end of R14, the anode of CA, the other end of R13 is linked the VIN of P6, the OUT of P6 links the G of P7, the other end of R14, the VSS of P6 links to each other with the end of S, the R15 of D, the P9 of the negative terminal of CA, P7, the anode of CB, the other end of R15 links to each other with the VIN of P8, the OUT of P8 links the G of P9, the other end of R16, and the VSS of P8 links to each other with the D of the negative terminal of CB, P9 and is connected to ground; Super capacitor is comprised of CA and CB;

Described voltage stabilizing circuit is comprised of E1, P1, R1, R2, E2, C1, R3, and the anode of E1 links to each other with EN with the IN of P1 and receives+5V, and the ADJ of P1 links to each other with the end of R1, the end of R2; The end of the anode of the OUT of P1 and the other end of R2, E2, the end of C1, the R3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of P1 and the negative terminal of E1, R1, the negative terminal of E2, C1, the other end of R3 link to each other and receive ground;

Described automatic switching module is comprised of P4 and R7, and P4 adopts nmos device IRF7416, and the G of P4 links to each other with the end of R7 and receives+5V, the other end ground connection of R7, and the S of P4 receives 4.2V, and the D of P4 receives BAT+;

Described control switch is comprised of P2, R4, R5, E3, P2 adopts nmos device IRF7416, the end phase of the G of P2 and R5, connect, the S of P2 links to each other with the end of R4 and receives 4.2V, the D of P4 links to each other with the anode of E3 and exports BATT, the negativing ending grounding of E3, and the other end of R4 and the R5 other end are connected to PCCTL;

Described constant voltage circuit is by R8, R9, C2, E6, P5, L, R10, C3, R11, R12, E7 forms, P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of P5, the ILM anode with E6 that links to each other with SHDN, the end of R9, the end of R8 is connected to 4.2V, the other end of R9 links to each other with the end of C2, the other end ground connection of C2, the end of the LX of P5 and L, the end of R10 links to each other, the end of the other end of L and C3, the anode of E7, the VOUT of P5 links to each other and output 3.3V, the other end of R10 and the other end of C3, the end of R11 links to each other, the other end of R11 and the FB of P5, the end of R12, the negative terminal of E7, the PGND of P5, the GND of P5 links to each other and receives ground.

Beneficial effect: power-supply system of the present utility model is the power source of thing machine, and the super capacitance management module is the energy-accumulating medium of power-supply system, and after the input dead electricity of power-supply system, the thing machine relies on the energy storage of super capacitance management module to finish SMS alarm.Adopt super capacitance management module rather than lithium battery to carry out energy storage, make not only applicable adverse circumstances of thing machine, and overcome the restriction in lithium cell charging life-span.

Super capacitance management module of the present utility model has the 3.3V of reserve with the 5V input voltage by conversion and energy storage output and can control the VBAT (3.6-4.2V) of output.Energy-accumulating medium uses the super capacitors of two joint 2.7V to substitute the single-lithium-battery pond, overcome lithium battery as thing machine energy-accumulating medium in the defective aspect life-span and the low temperature.

Description of drawings

Fig. 1 is the composition frame chart of the utility model thing machine;

Fig. 2 is the composition frame chart of super capacitance management module of the present utility model;

Fig. 3 is the utility model implementation case diagram.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figure 1, A kind of super capacitor is as the thing machine of energy-accumulating medium, comprise power-supply system, microprocessor, gsm module, 485 modules, Zigbee module, WIFI module, triode buffer circuit;

Power-supply system provides required power supply for microprocessor, gsm module, 485 modules, Zigbee module, WIFI module and triode isolation module.

The UART of gsm module, control signal and status signal link to each other with one side of triode buffer circuit, the another side of triode buffer circuit links to each other with microprocessor UART, control signal and status signal, solve signal level coupling between gsm module and the microprocessor by the triode buffer circuit, microprocessor is grasped gsm module ruuning situation by the status signal of monitoring gsm module, discovery gsm module communication abnormality is in time processed by control signal, comprises gsm module is implemented cold start-up.

The UART that adopts between microprocessor and 485 modules, Zigbee module, the WIFI module is connected with control signal.

Described power-supply system, comprise power supply terminal, power adaptation module, super capacitance management module, electric voltage observation circuit, reset circuit, reduction voltage circuit, selection circuit;

External power supply is input to power adaptation module by power supply terminal, and the 5V of power adaptation module stable output is to super capacitance management module, electric voltage observation circuit, reset circuit and reduction voltage circuit; The super capacitance management module is to microprocessor, triode buffer circuit and select circuit that continual constant voltage source (3.3V) is provided, and satisfies gsm module and the required VBAT (3.6-4.2V) of triode buffer circuit by microprocessor control output; The output state of electric voltage observation circuit out-put supply adaptation module is to microprocessor; Reset circuit produces the reset signal of microprocessor according to the output of power adaptation module; Reduction voltage circuit provides constant voltage source (3.3V) to selecting circuit when power adaptation module is exported; Select circuit to select continual constant voltage source (3.3V) or constant voltage source (3.3V) as the power supply of 485 modules, Zugbee module and WIFI module by microprocessor control.

485 modules are comprised of photoelectric isolating circuit, DC/DC buffer circuit, 485 chips, interface, 485 terminals, select the power supply of circuit output to link to each other with photoelectric isolating circuit with the input of DC/DC buffer circuit; The output of DC/DC buffer circuit links to each other with interface with photoelectric isolating circuit, 485 chips; The signal input of photoelectric isolating circuit links to each other with microprocessor, and the signal output of photoelectric isolating circuit links to each other with the signal input of 485 chips; The output of 485 chips links to each other with the input of interface; The output of interface links to each other with 485 terminals, and 485 terminals are connected to the ground.

Microprocessor:Microprocessor is provided by the SP6650 of SIPEX stablizes 3.3V, and the input voltage range of SP6650 is that 2.7V is to 6.5V.Microprocessor is selected STC12LE32S2, and the required electric current of its battery saving mode is at 2mA.When the super capacitor power supply, the voltage of super capacitor is 3.6V behind the transmission alarming short message, and the super capacitor capacity that can be used for the microprocessor standby is: 15Fx (3.6V-2.7V)=13.5As; Therefore, the stand-by time of microprocessor is: 13.5As/2mA=13.5*1000/2=6750s=1.87H.

As shown in Figure 1, 2, Described super capacitance management moduleComprise charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;

Super capacitor:The calculation of capacity of the super capacitor series connection of two joint 2.7V, in order to dwindle the overall volume of thing machine, it is crucial selecting suitable super capacitor capacity.In order to guarantee that the thing machine externally relies on super capacitor energy-storage to send the SMS alarm signal after the dead electricity, sends at most 16 alarming short messages.Be the average time that sends after tested 1 alarming short message: 1.5s, be the average time that sends continuously: 2.2s, therefore, the time that sends 16 alarming short messages is: 35.2s, thing machine required average current when sending note is: 250mA.35.2sX250mA=8800mAs=8.8As。The voltage range that the thing machine sends note is: 4.2V-3.6V=0.6V; The capacity of two joint serial connected super electric capacity are: 8.8As/0.6V=14.67F rounds and is 15F.Therefore, the single-unit super capacitor is chosen as 30F.

As shown in Figure 3, the main IC model of each several part is: charging circuit (CN3068), voltage stabilizing circuit (MIC29302BU), automatic switching module and control switch (IRF7416), constant voltage circuit (SP6650), balancing circuitry (XC61CN2202MR and XP161A1355PR).

Charging circuit (CN3068):From the cost control design, according to the requirement of VBAT (3.6-4.2V), the single-lithium-battery pond of choice for use maturation charging integrated circuit.Experimental verification: domestic 500Milliampere USBThe lithium cell charging integrated circuit of interface compatibility CN3068Satisfy the design needs fully.

CN3068 is the charger circuit that can carry out to the single-unit chargeable lithium cell constant current/constant voltage charging.This device inside comprises power transistor, does not need outside current sense resistor and choked flow diode during application.CN3068 only needs few peripheral component, and meets the usb bus technical specification, is very suitable for the field of portable use.Hot modulation circuit can be at the power dissipation ratio of device large or ambient temperature chip temperature is controlled in the safe range in higher.Charging current is by a non-essential resistance setting.When the input voltage power down, CN3068 enters the sleep pattern of low-power consumption automatically, and the current drain of battery is less than 3 microamperes at this moment.Other function comprises excessively low latching of input voltage, automatically recharges cell-temperature monitoring and charged state/functions such as charging done state indication.CN3068 adopts the little outline packages of 8 pins (SOP8).

Although CN3068 has the constant voltage charge voltage of inner fixedly 4.2V and can pass through two kinds of patterns of resistance adjustment constant voltage charge voltage of an outside, but in actual use when using non-essential resistance to adjust constant voltage charge voltage, owing to chip internal with outside temperature is inconsistent and reasons such as process deviation during chip production, may cause the deterioration in accuracy of output voltage and temperature coefficient to become large.Simultaneously, because the need outer meeting resistance not only increases material, assembly cost, the more important thing is the difficulty that has increased debugging.Therefore, in the utility model, adopt the inner fixedly constant voltage charge voltage mode of 4.2V of CN3068.

Balancing circuitry (XC61CN2202MR and XP161A1355PR):

Select to adopt the super capacitor series connection of two joint 2.7V, existing two joint 2.7V super capacitor series mould set adopt voltage comparator, NMOSFET and resistance to realize balancing circuitry, but select the comparator of 2.6V in the selection of voltage comparator, therefore, the voltage of two joint 2.7V super capacitor series mould set is 2.6x2=5.2V, is not inconsistent compound machine 4.2V.The precision of the XC61C of TOREX series high accuracy, low power consumption voltage comparator is: ± 2%, reference voltage detection from 1.6V to 6V, stepping 0.1V, operating voltage range 0.7V is to 10.0V.The index of the selection of XC61C model is calculated:

(1) voltage detecting value

Be that the charging voltage of ± 2%, CN3068 is 4.2V according to the precision of XC61C, that is:

The ceiling voltage of two joint serial connected super electric capacity: 4.2Vx (1+2%)=4.284V;

The minimum voltage of two joint serial connected super electric capacity: 4.2Vx (1-2%)=4.116V;

For the ceiling voltages that guarantee two joint serial connected super electric capacity reach 4.2V, therefore, the voltage detecting value of single-unit should be 4.284V/2=2.142V.

(2) the XC61C model is determined

From 1.6V to 6V, stepping 0.1V determines the model of XC61C, so we select 2.2V the most suitable according to reference voltage detection.Concrete model is: XC61CN2202MR.

XP161A1355PR is N MOS power switch, is used in conjunction with XC61CN2202MR, by the output control XP161A1355PR conducting of XC61CN2202MR, realizes the equilibrium charging of two assistant warden capacitances in series modules.

Shown in Fig. 2,3, the utility model implementation case comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;

Charging circuit is comprised of E4, P3, E5 and R6, and the anode of E4 links to each other with the VCC of, P3 and receives+5V, and the negative terminal of E4 is connected with ground; The FB of P3 links to each other with the E5 anode with BAT and exports 4.2V, and the end of the negative terminal of the TEMP of P3, GND, E5, R6 links to each other and receives ground, and the IR of P3 links to each other with the other end of R6;

Balancing circuitry is comprised of P6, P7, P8, P9, R13, R14, R15, R16, BAT+ is connected to the end of S, the R13 of P7, the end of R14, the anode of CA, the other end of R13 is linked the VIN of P6, the OUT of P6 links the G of P7, the other end of R14, the VSS of P6 links to each other with the end of S, the R15 of D, the P9 of the negative terminal of CA, P7, the anode of CB, the other end of R15 links to each other with the VIN of P8, the OUT of P8 links the G of P9, the other end of R16, and the VSS of P8 links to each other with the D of the negative terminal of CB, P9 and is connected to ground; Super capacitor is comprised of CA and CB;

Voltage stabilizing circuit is comprised of E1, P1, R1, R2, E2, C1, R3, and the anode of E1 links to each other with EN with the IN of P1 and receives+5V, and the ADJ of P1 links to each other with the end of R1, the end of R2; The end of the anode of the OUT of P1 and the other end of R2, E2, the end of C1, the R3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of P1 and the negative terminal of E1, R1, the negative terminal of E2, C1, the other end of R3 link to each other and receive ground;

Automatic switching module is comprised of P4 and R7, and P4 adopts nmos device IRF7416, and the G of P4 links to each other with the end of R7 and receives+5V, the other end ground connection of R7, and the S of P4 receives 4.2V, and the D of P4 receives BAT+;

Control switch is comprised of P2, R4, R5, E3, and P2 adopts nmos device IRF7416, the end phase of the G of P2 and R5, connect, the S of P2 links to each other with the end of R4 and receives 4.2V, and the D of P4 links to each other with the anode of E3 and exports BATT, the negativing ending grounding of E3, the other end of R4 and the R5 other end are connected to PCCTL;

Constant voltage circuit is by R8, R9, C2, E6, P5, L, R10, C3, R11, R12, E7 forms, P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of P5, the ILM anode with E6 that links to each other with SHDN, the end of R9, the end of R8 is connected to 4.2V, the other end of R9 links to each other with the end of C2, the other end ground connection of C2, the end of the LX of P5 and L, the end of R10 links to each other, the end of the other end of L and C3, the anode of E7, the VOUT of P5 links to each other and output 3.3V, the other end of R10 and the other end of C3, the end of R11 links to each other, the other end of R11 and the FB of P5, the end of R12, the negative terminal of E7, the PGND of P5, the GND of P5 links to each other and receives ground.

The utility model possesses following advantage:

1. the utility model adopts the realization of cellular li-ion battery charging management chip to the restriction of two joint super capacitors series connection both end voltage, according to

The requirement of gsm module VBAT input voltage range is controlled its charging voltage at 4.2V.And this charging management chip not only shipment amount is large, and price is low.

Equilibrium charging circuit when 2. the utility model adopts voltage comparator and MOSFET to realize two joint super capacitor series connection is according to thing

Machine is limited in 4.2V to two joint super capacitor series connection two ends charging voltages, and we can select to decide the comparator of voltage, and not only precision is high, and price might as well.

3. the utility model adopts MOSFET to realize that the thing machine is in the automatic switchover of selecting the power supply of power supply or super capacitor, for microprocessor provides

3.3V uninterrupted power supply is controlled the power supply that 3.6-4.2V is provided to gsm module VBAT by microprocessor, be 4.2V during Power supply, is 3.6-4.2V during the super capacitor power supply.

4. the utility model adopts the purpose of microprocessor control gsm module VBAT to be: to detect gsm module unusual when microprocessor,

Warm start can not when success, and lower electricity that can be by control gsm module VBAT and powering on is realized the cold start-up of gsm module, guarantees that the thing machine is working properly.

The above is preferred embodiment of the present utility model only, is not restricted to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.

Claims

1. a super capacitor is characterized in that: comprise power-supply system, microprocessor, gsm module, 485 modules, Zigbee module, WIFI module, triode buffer circuit as the thing machine of energy-accumulating medium;

2. a kind of super capacitor according to claim 1 is characterized in that as the thing machine of energy-accumulating medium: described power-supply system comprises power supply terminal, power adaptation module, super capacitance management module, electric voltage observation circuit, reset circuit, reduction voltage circuit, selection circuit;

3. a kind of super capacitor according to claim 2 is as the thing machine of energy-accumulating medium, it is characterized in that: described 485 modules are comprised of photoelectric isolating circuit, DC/DC buffer circuit, 485 chips, interface, 485 terminals, select the power supply of circuit output to link to each other with photoelectric isolating circuit with the input of DC/DC buffer circuit; The output of DC/DC buffer circuit links to each other with interface with photoelectric isolating circuit, 485 chips; The signal input of photoelectric isolating circuit links to each other with microprocessor, and the signal output of photoelectric isolating circuit links to each other with the signal input of 485 chips; The output of 485 chips links to each other with the input of interface; The output of interface links to each other with 485 terminals, and 485 terminals are connected to the ground.

4. a kind of super capacitor according to claim 2 is as the thing machine of energy-accumulating medium, it is characterized in that: described super capacitance management module comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;

5. a kind of super capacitor according to claim 4 is characterized in that as the thing machine of energy-accumulating medium: described charging circuit is comprised of E4, P3, E5 and R6, and the anode of E4 links to each other with the VCC of P3 and receives+5V, and the negative terminal of E4 is connected with ground; The FB of P3 links to each other with the E5 anode with BAT and exports 4.2V, and the end of the negative terminal of the TEMP of P3, GND, E5, R6 links to each other and receives ground, and the IR of P3 links to each other with the other end of R6.

6. a kind of super capacitor according to claim 4 is as the thing machine of energy-accumulating medium, it is characterized in that: described balancing circuitry is by P6, P7, P8, P9, R13, R14, R15, R16 forms, BAT+ is connected to the S of P7, the end of R13, the end of R14, the anode of CA, the other end of R13 is linked the VIN of P6, the OUT of P6 links the G of P7, the other end of R14, the VSS of P6 and the negative terminal of CA, the D of P7, the S of P9, the end of R15, the anode of CB links to each other, the other end of R15 links to each other with the VIN of P8, the OUT of P8 links the G of P9, the other end of R16, the VSS of P8 and the negative terminal of CB, the D of P9 links to each other and is connected to ground; Super capacitor is comprised of CA and CB.

7. a kind of super capacitor according to claim 4 is as the thing machine of energy-accumulating medium, it is characterized in that: described voltage stabilizing circuit is comprised of E1, P1, R1, R2, E2, C1, R3, the anode of E1 links to each other with EN with the IN of P1 and receives+5V, and the ADJ of P1 links to each other with the end of R1, the end of R2; The end of the anode of the OUT of P1 and the other end of R2, E2, the end of C1, the R3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of P1 and the negative terminal of E1, R1, the negative terminal of E2, C1, the other end of R3 link to each other and receive ground.

8. a kind of super capacitor according to claim 4 is as the thing machine of energy-accumulating medium, it is characterized in that: described automatic switching module is comprised of P4 and R7, P4 adopts nmos device IRF7416, the G of P4 links to each other with the end of R7 and receives+5V, the other end ground connection of R7, the S of P4 receives 4.2V, and the D of P4 receives BAT+.

9. a kind of super capacitor according to claim 4 is as the thing machine of energy-accumulating medium, it is characterized in that: described control switch is comprised of P2, R4, R5, E3, P2 adopts nmos device IRF7416, the end phase of the G of P2 and R5, connect, the S of P2 links to each other with the end of R4 and receives 4.2V, and the D of P4 links to each other with the anode of E3 and exports BATT, the negativing ending grounding of E3, the other end of R4 and the R5 other end are connected to PCCTL.

10. a kind of super capacitor according to claim 4 is as the thing machine of energy-accumulating medium, it is characterized in that: described constant voltage circuit is by R8, R9, C2, E6, P5, L, R10, C3, R11, R12, E7 forms, P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of P5, the ILM anode with E6 that links to each other with SHDN, the end of R9, the end of R8 is connected to 4.2V, the other end of R9 links to each other with the end of C2, the other end ground connection of C2, the end of the LX of P5 and L, the end of R10 links to each other, the end of the other end of L and C3, the anode of E7, the VOUT of P5 links to each other and output 3.3V, the other end of R10 and the other end of C3, the end of R11 links to each other, the other end of R11 and the FB of P5, the end of R12, the negative terminal of E7, the PGND of P5, the GND of P5 links to each other and receives ground.