CN1317846A - Step up and control method of Al-air battery and its device - Google Patents
Step up and control method of Al-air battery and its device Download PDFInfo
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- CN1317846A CN1317846A CN 01114629 CN01114629A CN1317846A CN 1317846 A CN1317846 A CN 1317846A CN 01114629 CN01114629 CN 01114629 CN 01114629 A CN01114629 A CN 01114629A CN 1317846 A CN1317846 A CN 1317846A
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Abstract
A step up and control method and its device for Al-air battery is disclosed. N step up circuits (units are parallelly connected. Their positive electrodes for input voltage are parallelly connected with positive electrode of Al-air battery. Their negative electrodes of input voltage are parallelly connected to the negative electrode of Al-air battery. Their positive electrodes of output voltage are parallelly connected as the positive electrode of power supply output. Their negative electrodes of output voltage are parallelly connected as the negative electrode of power supply output. Its advantages are high output power, no turbid of electrolyte, and low temp raising.
Description
The present invention relates to fuel cell, aluminium-air battery boosts and control method and device thereof in more detail.
Chemical power source occupies very consequence in national economy and national defense construction, the chemical power source of common application has the battery of dry cell, lead acid accumulator, alkaline battery and special purpose etc. at present, these batteries all have certain limitation in application, can not satisfy the needs of scientific research, production, national defense construction and people's lives, neutral aluminium-air cell, be a kind of new fuel cell, the not available premium properties of many above power supplys is arranged in the use.Its basic principle is: polynary aluminium alloy is as negative electrode (add some metal essence and increase its activity as cell cathode in the aluminium electrode), airborne oxygen is as anode (by the good film of hydrophobicity and add air electrode that the specialty metal of catalyst forms as anode), saline solution is as electrolyte, with the aluminium electrode put into be full of electrolyte form battery container by air electrode etc., oxidation reaction takes place in the aluminium electrode in electrolyte, and discharge out electronics, like this, aluminium electrode and air electrode have just been formed cell.This battery raw material is extensive, inexpensive, easy to use, safe, be not afraid of wind and weather, and it is smokeless, tasteless, pollution-free that the skin clothing is not had burn into.Through laboratory test, test and army, marine on probation showing: the service time of this battery, every indexs such as the adaptability of environment, storage property all are better than dry cell.This battery consumption aluminium generate reactant--aluminium oxide is again a good high-purity pharmaceutical raw material, it is basic identical that the cost price that valency and user buy the aluminium electrode is reclaimed in the pharmaceutical factory, that is to say: the user is behind disposable purchase one battery, and it is free use that later aluminium electrode is close to.This is that a kind of multiple occasion (special power supply of electric bicycle, battery-operated motor cycle, electric automobile, military affairs and field work etc.) utmost point that can be used for has the extraordinary environment protection type battery of application prospect.
The cell open circuit voltage of existing aluminium-air battery only is about 1.5V, and current density is directly proportional with the area of battery lead plate, and the terminal voltage of its battery will be reduced to 0.5V-1.0V when this battery carries at band.When using on land, though battery can be composed in series the higher battery pack of a voltage, because the volume of cell is bigger, if cell to be connected into can be practical battery pack (12V, 24V, 48V etc.), just seem too big at its volume of many application scenarios, consider that from practical, convenient and volume of battery the series connection progression of battery pack all can not be too many.When particularly at sea using, by with the conductivity of seawater, single battery can't be composed in series the higher battery pack of voltage at all.This battery and battery pack usually are to add a stepup transformer in use sometimes like this, will lower voltage being upgraded to can be for practical high voltage, simple is upgraded to high voltage with low-voltage, it is technical to be ripe, many off-the-shelfs are arranged, but when boosting, will provide bigger power, the very difficulty that just shows, not only there is not product, even relevant technical data all seldom.And, because the aluminium oxide that aluminum substrate produces in consumption process raises the muddiness of electrolyte change, the temperature that series battery is in operation, these all affect to the normal operation of this battery, the very difficulty that its application in many occasions is become.
The objective of the invention is to problem at the prior art existence, boosting and control method and device thereof of a kind of aluminium-air battery is provided, the high-power output of power supply is provided, and the volume that makes the aluminium-air battery group reduces many, solves the problem of required charge in batteries of electrolysis muddiness, temperature rise and most electric power system and charging control in addition.
The present invention also aims to provide boosting and control device of a kind of air-battery that is used to realize said method.
Aluminium-air battery of the present invention boost and control method is that N unit booster circuit (is called for short the unit, be connected in parallel down together), the input voltage positive pole of N unit is connected in parallel and connects the positive pole of aluminium-empty battery together, the input voltage negative pole of N unit is connected in parallel and connects the negative pole of aluminium-empty battery together, the positive pole that the output voltage of N booster circuit is anodal and downlink connection is exported as power supply together, as the negative pole of power supply output, described N is an integer together for the output voltage negative pole of N booster circuit and downlink connection.
Described unit booster circuit can be any booster circuit of isolation or non-isolation method.
In order to make each unit all undertake lotus, can adopt current sharing control module to link to each other with the control section of each unit respectively.
Described current sharing control module can adopt the Voltage Feedback mode that the element circuit in the boost module is controlled.
Because long-time, the high-power operation of battery, some reactant that the oxidation reaction of alloy aluminum produces causes the electrolyte muddiness, and the electrolyte of this muddiness can make the operating efficiency of battery reduce.For addressing this problem, can adopt supervision of electrolyte turbidity and water pump control circuit to obtain operating voltage from the output of boost module.
Because long-time, the high-power operation of battery, the oxidation reaction of alloy aluminum also can cause the temperature of whole battery group to raise, this temperature rise meeting reduces the operating efficiency of battery, can make the whole system can't operate as normal when serious.For addressing this problem, can adopt temperature rise supervision and air blast control circuit to obtain operating voltage from the output of boost module.
Because the aluminium-air battery group is normal power supply in support in use, usually is as the role who charges a battery in whole powersupply system.Thereby, charging and charge control module can be connected on the boost module.When this battery pack as the direct power supply of power load the time, this partial circuit also shouldn't.
Aluminium-air battery of the present invention boost and control device (is called for short the unit by N unit booster circuit, down together) formation is connected in parallel, the input voltage positive pole of N unit is connected in parallel and connects the positive pole of aluminium-empty battery together, the input voltage negative pole of N unit is connected in parallel and connects the negative pole of aluminium-empty battery together, the positive pole that the output voltage of N booster circuit is anodal and downlink connection is exported as power supply together, the negative pole that the output voltage negative pole of N booster circuit and downlink connection are exported as power supply together, constitute boost module, described N is an integer.
Current sharing control module links to each other with the control section of each unit respectively;
Supervision of electrolyte turbidity and water pump control circuit obtain operating voltage from the output of boost module;
Temperature rise supervision and air blast control circuit obtain operating voltage from the output of boost module;
Charging and charge control module are connected to boost module.
This shows that the aluminium-air battery that is made of control of booster circuit module, current sharing control module, the supervision of electrolyte turbidity and water pump control circuit, battery pack temperature rise supervision and air blast control circuit, charge in batteries and charging circuit boosts and control device is an optimum implementation of the present invention.
Of the present invention boost and control method and device thereof not only can be applicable to aluminium-air battery also can be used in solar cell and fuel cell.
The present invention compared with prior art has following characteristics and advantage:
(1) the present invention can constitute the redundant module structure of N+M formula, and M represents redundant umber, and the M value is big more, and the reliability of system is high more.Particularly as marine extraordinary electric power system, this superiority just seems and particularly protrudes, can guarantee the approximate harsh reliability requirement of sea and some special occasion.
(2) can finish more powerful output.Only about 3W, the power supply of several hectowatts just is called as " offshore power plant " to the marine peak power output of this battery at present, and existing circuit can't satisfy this specific (special) requirements.More massive at sea use provides many facilities to this patented technology to aluminium-air battery.
(3) use apparatus of the present invention, when battery discharging, aluminium-air battery and storage battery can be powered to the electrical appliance of system simultaneously; Once the electrical appliance of system stops this power demands, when storage battery stops to discharge, aluminium-air battery boost and electric weight that control device will make aluminium-air battery to charge in batteries, enough electric power is arranged when guaranteeing to need in system.This kind combination has prolonged the power-on time and the useful life of storage battery, has very high use value in using systems such as electric automobile, electric bicycle.
(4) in aluminium-air battery, use circulate electrolyte to filter and the air blast cooling system.There is very strong use value in this system to many land facility and military equipment.As field and field operations large power supply, be essential system equipment on the use projects such as electric automobile, electric bicycle.
Fig. 1 is apparatus of the present invention preferred plan block diagram;
Fig. 2 is the element circuit schematic diagram that constitutes boost module among Fig. 1;
Fig. 3 is that boost module is connected the circuit theory diagrams of realizing sharing control among Fig. 1 with current-sharing module;
Fig. 4 is the circuit theory diagrams of current sharing control module among Fig. 1;
Fig. 5 is that the electrolyte turbidity monitors and water pump control circuit figure among Fig. 1;
Fig. 6 is battery pack temperature rise supervision and air blast control circuit figure among Fig. 1.
Below by embodiment optimum implementation of the present invention is described.
Embodiment
As shown in Figure 1, the preferred plan of apparatus of the present invention is by the booster circuit module, current sharing control module, the electrolyte turbidity monitors and water pump control circuit, battery pack temperature rise supervision and air blast control circuit, charge in batteries control and charging circuit constitute, it wherein in the chain-dotted line boost module, it is element of the present invention, (be called for short the unit by N unit booster circuit, down together) formation is connected in parallel, the input voltage positive pole of N unit is connected in parallel and connects the positive pole of aluminium-empty battery together, the input voltage negative pole of N unit is connected in parallel and connects the negative pole of aluminium-empty battery together, the positive pole that the output voltage of N booster circuit is anodal and downlink connection is exported as power supply together, as the negative pole of power supply output, described N is an integer together for the output voltage negative pole of N booster circuit and downlink connection;
Current sharing control module links to each other with the control section of each unit respectively;
Supervision of electrolyte turbidity and water pump control circuit obtain operating voltage from the output of boost module;
Temperature rise supervision and air blast control circuit obtain operating voltage from the output of boost module;
Charging and charge control module are connected to boost module.
As shown in Figure 2, element circuit adopts common non-isolations LC topology boost circuit structure, employing PWM (pulse width modulation) and in conjunction with unique controlling schemes of PFM (pulse is frequently regulated), and (voltage of 0.5v～1.0V) rises to 5v to make one pole battery Vin.The IC01 control module of this element circuit, provide power supply by the V+ end to IC01, connect the REF end by outer meeting resistance R1, the reference voltage of the 1.5V that obtains, by R2 the instant value of inductive current is sent into the CS end, make IC01 adopt improved PFM (pulse is frequently regulated) control mode, the restriction inductive current makes it be no more than a certain peak current.With output voltage V out dividing potential drop input FB, make IC01 adjust the internal work state by R3, R4, thereby provide the voltage-regulation scope of efficient a, broad, keep that its output voltage V out's is stable to load according to the variation of Vout.
Though this unit booster circuit can provide stable 5v output voltage, by with the restriction of its circuit structure and input voltage, its power output and for limited only is about 3W.In order to realize high-power output, particularly at the afloat application of aluminium-air battery, improve in any case the unit booster circuit topological structure, select which kind of former device and optimize the design of printed circuit board (PCB), also just reduce again at most a little element circuits loss, improve a little conversion efficiencies, can't obtain required power output at all.As seen, in order to realize the needs of high-power output, the essential unit parallel-connection structure that adopts.
As shown in Figure 3, the output voltage and the output current of an element circuit of a control IC detection.IC01, IC02, IC03 etc. are the unit control IC of boosting, IC11, IC12, IC13 etc. are sharing control IC, RS01, RS02, RS03 etc. are the current sensor (resistance) of unit booster circuit, the current value of element circuit is converted to magnitude of voltage, and be input to current detecting amplifying circuit among the sharing control IC such as IC11, IC12, IC13, on sharing control bus SHARE+, the SHARE-with control signal output sharing control IC of this reflection unit booster circuit size of current.
Shown in Figure 4, I01 is the output current of unit module power stage GL1, and the signal that current amplifier DL1 will react output current I01 size is enlarged into voltage U 1, and N unit adopts N this structure.When output current reached current-sharing, current amplifier DL1 output current I1 was zero, and at this moment I01 is in the current-sharing operating state.Otherwise at A, the B two ends of diode DN1, U1 (UA) is if exceed voltage on the current equalizing bus bar SHARE (+or-), diode DN1 conducting, and the voltage of this variation will be controlled A1 by A2, by A1 control unit power stage output current, finally reach current-sharing again.
Have only the output voltage of a current amplifier of output current maximum just can make diode current flow in N unit like this, thereby influence current equalizing bus bar voltage.Under this equal stream mode, the unit that participates in adjusting once has only this maximum output current cell operation by the decision of the maximum output current unit in N the unit, and this maximum output current is at random, it was in case work both had been in major state, and other unit just is in controlled state.Sharing control IC exports control signal voltage the FB input of each boosting unit control IC to, thereby regulates the output current value of each boosting unit, obtains good current-sharing effect.
Shown in Figure 5, SM1 is a light source, and RSG is photo resistance, and SF01 is a signal amplifier, and SJ1 is a relay, and SB is a water pump.Light source SM1 is put into the electrolyte (salt solution) that needs detection, and photo resistance RSG is placed in the electrolyte of one section fixed range of light source SM1, and the variation of liquid turbidity just becomes the sensitive volume variation of photo resistance RSG like this.When the turbidity of liquid increases, the magnitude of voltage of RSG is along with becoming big, this change in voltage is passed through electric bridge, amplify output through amplifier, adjust the spacing of relevant component parameter and light source SM1 and photo resistance RSG, make the turbidity threshold values conducting of FS1, thereby make the contact closure of relay SJ1 in certain regulation, also just start water pump SB work, reach the purpose of filtering electrolyte through filtration system.
Shown in Figure 6, NP1 is a temperature sensor, and FF01 is a signal amplifier, and FJ1 is a relay, and FS is a fan.NP1 is the positive bias state among the figure, when variations in temperature, the junction voltage of NP1 can raise with temperature and descend, this change in voltage is amplified output by electric bridge through amplifier, adjusts relevant component parameter, make the temperature threshold values conducting of FG1 in certain regulation, thereby make the contact closure of relay FJ1, also just start fan FS work, reach purpose to the battery pack cooling.
Be equipped with different charging control circuits at different batteries.As the model that can select for use UNITRODE company to produce the development of charging lead-acid cells and charging control circuit is the IC piece of UC2906, UC3906, UC3907, UC2909; Can select the IC piece of UCC3956, UCC3911, UCC3957 for use to lithium ion battery; The particulars of relevant circuit design can be consulted the product manual of UNITRODE company.Also can select model for use is the control IC piece of LM3621 equivalent type.Can also buy corresponding charger according to user's specific requirement.
Claims (10)
1, a kind of aluminium-air battery boosts and control method, it is characterized in that it being that N unit booster circuit (is called for short the unit, be connected in parallel down together), the input voltage positive pole of N unit is connected in parallel and connects the positive pole of aluminium-empty battery together, the input voltage negative pole of N unit is connected in parallel and connects the negative pole of aluminium-empty battery together, the positive pole that the output voltage of N booster circuit is anodal and downlink connection is exported as power supply together, as the negative pole of power supply output, described N is an integer together for the output voltage negative pole of N booster circuit and downlink connection.
2, boosting and control method of aluminium-air battery according to claim 1 is characterized in that current sharing control module links to each other with the control section of each unit respectively.
3, boosting and control device of aluminium-air battery according to claim 1 and 2 is characterized in that supervision of electrolyte turbidity and water pump control circuit obtain operating voltage from the output of boost module.
4, according to the boosting and control device of claim 1 or 2 or 3 described aluminium-air batteries, it is characterized in that temperature rise supervision and air blast control circuit obtain operating voltage from the output of boost module.
5,, it is characterized in that charging and charge control module are connected to boost module according to the boosting and control device of claim 1 or 2 or 3 or 4 described aluminium-air batteries.
6, a kind of aluminium-air battery boosts and control device, it is characterized in that (being called for short the unit by N unit booster circuit, down together) formation is connected in parallel, the input voltage positive pole of N unit is connected in parallel and connects the positive pole of aluminium-empty battery together, the input voltage negative pole of N unit is connected in parallel and connects the negative pole of aluminium-empty battery together, the positive pole that the output voltage of N booster circuit is anodal and downlink connection is exported as power supply together, as the negative pole of power supply output, described N is an integer together for the output voltage negative pole of N booster circuit and downlink connection.
7, boosting and control device of aluminium-air battery according to claim 6 is characterized in that current sharing control module links to each other with the control section of each unit respectively.
8,, it is characterized in that the electrolyte turbidity monitors and water pump control circuit obtains operating voltage from the output of boost module according to the boosting and control device of claim 6 or 7 described aluminium-air batteries.
9, according to the boosting and control device of claim 6 or 7 or 8 described aluminium-air batteries, it is characterized in that temperature rise supervision and air blast control circuit obtain operating voltage from the output of boost module.
10,, it is characterized in that charging and charge control module are connected to boost module according to the boosting and control device of claim 6 or 7 or 8 or 9 described aluminium-air batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01114629XA CN1165094C (en) | 2001-04-17 | 2001-04-17 | Step up and control method of Al-air battery and its device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01114629XA CN1165094C (en) | 2001-04-17 | 2001-04-17 | Step up and control method of Al-air battery and its device |
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| Publication Number | Publication Date |
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| CN1317846A true CN1317846A (en) | 2001-10-17 |
| CN1165094C CN1165094C (en) | 2004-09-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820795A (en) * | 2011-06-08 | 2012-12-12 | 李尔公司 | Offline power supply and apparatus for charging a plug-in vehicle |
| CN103199694A (en) * | 2013-03-27 | 2013-07-10 | 北京工业大学 | Switching power supply with automatic current sharing function |
| CN104859461A (en) * | 2014-12-30 | 2015-08-26 | 朱海燕 | Brake energy recovering method for electromobile |
| CN109975645A (en) * | 2019-04-03 | 2019-07-05 | 重庆倍莫廷科技有限公司 | A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module |
-
2001
- 2001-04-17 CN CNB01114629XA patent/CN1165094C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820795A (en) * | 2011-06-08 | 2012-12-12 | 李尔公司 | Offline power supply and apparatus for charging a plug-in vehicle |
| CN102820795B (en) * | 2011-06-08 | 2016-04-13 | 李尔公司 | For the off-line power supply that charges for the plug-in type vehicles and device |
| CN103199694A (en) * | 2013-03-27 | 2013-07-10 | 北京工业大学 | Switching power supply with automatic current sharing function |
| CN104859461A (en) * | 2014-12-30 | 2015-08-26 | 朱海燕 | Brake energy recovering method for electromobile |
| CN104859461B (en) * | 2014-12-30 | 2018-03-02 | 海汇新能源汽车有限公司 | Method for recovering brake energy used for electric vehicle |
| CN109975645A (en) * | 2019-04-03 | 2019-07-05 | 重庆倍莫廷科技有限公司 | A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module |
| CN109975645B (en) * | 2019-04-03 | 2022-11-25 | 重庆倍莫廷科技有限公司 | Optical isolation wide voltage range electric leakage monitoring alarm module |
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| Publication number | Publication date |
|---|---|
| CN1165094C (en) | 2004-09-01 |
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Granted publication date: 20040901 |