CN102709623A - Energy capacity pre-warning system of zinc-air battery - Google Patents
Energy capacity pre-warning system of zinc-air battery Download PDFInfo
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- CN102709623A CN102709623A CN2012101486126A CN201210148612A CN102709623A CN 102709623 A CN102709623 A CN 102709623A CN 2012101486126 A CN2012101486126 A CN 2012101486126A CN 201210148612 A CN201210148612 A CN 201210148612A CN 102709623 A CN102709623 A CN 102709623A
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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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Abstract
The invention discloses an energy capacity pre-warning system of a zinc-air battery. The energy capacity pre-warning system comprises a control unit, an LCD (liquid crystal display) display unit, a RS232 bus, a storage unit, a key unit, a current sensor and an A/D conversion unit, wherein the control unit is connected with a computer through the RS232 bus; the current sensor is arranged at a power output end of the zinc-air battery; signals acquired by the current sensor are converted to digital signals by the A/D conversion unit and are transmitted to the control unit to be processed; the processed signals are transmitted to the LCD display unit and the storage unit by the control unit; and commands are transmitted to the control unit by the key unit. With the adoption of the energy capacity pre-warning system, the best opportunity for changing the zinc electrode in the zinc-air battery pack can be warned, so that the zinc-air battery pack has good performance and long service life is guaranteed.
Description
Technical field
The present invention relates to zinc-air cell, particularly zinc-air cell energy early warning system.
Background technology
It is power that electric automobile is meant with the vehicle power, goes with power wheel, meets the vehicle of road traffic, the requirement of safety regulations each item.The advantage of electric automobile is: pollution-free, noise is low, energy efficiency is high, diversified, simple in structure, it is easy to maintenance to use, and these advantages make the research of electric automobile and the focus that application becomes auto industry just.
Battery is the primary key of electric automobile development.Lead-acid battery occurs the earliest, and the time of use is also the longest, and security performance is also best, but the energy storage effect is not ideal, can not satisfy the requirement of batteries of electric automobile high power capacity; Ni-MH battery energy storage effect and power output are all desirable than lead-acid battery, yet because the hydrogen that Ni-MH battery produces in charging process is blasted easily, can not satisfy the requirement of batteries of electric automobile high security; The lithium ion battery electric energy stored is 2～3 times of lead-acid battery, but because the lithium ion that it contains is active in layer on surface of metal, in air, occurs situation such as spontaneous combustion, blast easily, and danger is higher.Zinc-air cell has that volume is little, and charge capacity is big, and quality is little, can be in the temperature range of broadness operate as normal, and do not have corrosion, safe and reliable, advantage such as with low cost is extremely promising electric vehicle battery.
For guaranteeing that the zinc-air cell group is functional and prolonging battery useful life, need carry out necessary management and control to battery; Zinc-air cell is as positive pole, with the battery of airborne oxygen as negative pole with active material zinc; The oxygen of anodal zinc and absorption produces electrochemical reaction, produces electric current, and zinc constantly carries out oxidation, uninterruptedly discharges electric current, and zinc reduces along with the increase of providing electric energy, until exhausting the zinc electrode that need more renew this moment; Zinc electrode is changed too early or is late excessively, all can keep impact good performance and useful life to the zinc and air cell battery pack.Therefore, need carry out necessary management to the energy content of battery.
Summary of the invention
The object of the present invention is to provide a kind of zinc-air cell energy early warning system.This system can remind the zinc-air cell group need change the best opportunity of zinc electrode, thereby ensures that the zinc and air cell battery pack has good performance and useful life.
The objective of the invention is to realize through following technical scheme:
The present invention relates to zinc-air cell energy early warning system; Comprise control unit, LCD display unit, RS232 bus, memory cell, push-button unit, current sensor and A/D D/A conversion unit; Said control unit links to each other with computer through said RS232 bus; Said current sensor is arranged on zinc and air cell electric weight output; The signal that said current sensor collects converts digital signal to through said A/D D/A conversion unit and is delivered to said control unit and handles, and the signal after said control unit will be handled is delivered to said LCD display unit and memory cell respectively, and said push-button unit is carried instruction to said control unit.
Preferably, said push-button unit comprises the zero clearing button.
Preferably, said control unit comprises 8952 single-chip microcomputers, sampling module and computing module; After the digital signal that said sampling module reception A/D D/A conversion unit converts to, be delivered to computing module, the consequential signal that said computing module will be analyzed gained is delivered to 8952 single-chip microcomputers, transfers out after by it signal further being handled.
Preferably, said sampling module comprises sample circuit and sampling A, and said sampling A is 7135 chips.
Preferably, the sample frequency that adopts of said sampling module is: when electric current less than set point I
A, per minute sampling 1 time; When electric current greater than set point I
B, sampling in per 5 seconds 1 time; When electric current greater than set point I
C, per second sampling 2 times.
Compared with prior art; Beneficial effect of the present invention is: through the accurate mensuration to the accumulation discharge electricity amount; Judge the remaining electric weight of zinc-air cell; Further judge the time that battery can also use, thereby show that through LCD the time prompting user changes zinc electrode in the best opportunity, thereby ensure that the zinc and air cell battery pack has good performance and useful life.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the work schedule analysis chart of sampling A of the present invention;
Fig. 3 is the circuit connection diagram of sampling A of the present invention.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is elaborated.Following examples will help those skilled in the art further to understand the present invention, but not limit the present invention in any form.Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the present invention's design, can also make some adjustment and improvement.These all belong to protection scope of the present invention.
Structural representation such as Fig. 1 of the zinc-air cell energy early warning system of present embodiment; Comprise control unit, LCD display unit, RS232 bus, memory cell, push-button unit, current sensor and A/D D/A conversion unit; Said control unit links to each other with computer through said RS232 bus; Said current sensor is arranged on zinc and air cell electric weight output; The signal that said current sensor collects converts digital signal to through said A/D D/A conversion unit and is delivered to said control unit and handles; Signal after said control unit will be handled is delivered to said LCD display unit and memory cell respectively, and said push-button unit is carried instruction to said control unit.
In the present embodiment, said push-button unit comprises the zero clearing button.
In the present embodiment, said control unit comprises 8952 single-chip microcomputers, sampling module and computing module; After the digital signal that said sampling module reception A/D D/A conversion unit converts to, be delivered to computing module, the consequential signal that said computing module will be analyzed gained is delivered to 8952 single-chip microcomputers, transfers out after by it signal further being handled.
In the present embodiment, said sampling module comprises sample circuit and sampling A, and said sampling A is 7135 chips.Because need sampled signal to belong to direct current measurement, sample frequency is low, and sampling precision is less demanding, and the external interference of sampling is very little, so sampling A selects to have very large space; According to actual analysis, adopt 7135 chips.Using 7135 o'clock, can get according to work schedule analysis as shown in Figure 2, need to consider to export saving 8952 mcu resources that can try one's best in the inquiry of signals to 7135.When 7135CLK end incoming frequency was 125K, the pin output frequency high level of STBR was 1/ (2 * 125k)=2u.Therefore as long as use a middle fracture (P3.2) just can judge, 5 external tapping resources have so just been saved, connecting circuit as shown in Figure 3.
In the present embodiment, the sample frequency that adopts of said sampling module is set to: when electric current less than set point I
A(at this moment, can think that load is out of service), per minute sampling 1 time; When electric current greater than set point I
B(at this moment, load is in the low speed state that travels at the uniform speed), sampling in per 5 seconds 1 time; When electric current greater than set point I
C(at this moment, load is in the high-speed cruising state), per second sampling 2 times.I
A, I
B, I
CNumerical value set according to the actual conditions of load, be preset value.
System with present embodiment is used for example on the 35AH zinc-air cell, concrete job step is following:
1, set battery capacity:
Connect computer through the RS232 interface, use the RS232 bitcom to set battery capacity.
Control unit is stored in the capacity parameter of battery in " memory cell " after receiving computer RS232 order.
In the present embodiment, need on the 35AH zinc-air cell, use, therefore set " 35AH "; The operable time of user can be calculated according to 35AH by system.
2, calculate service time:
Control unit is through the electric current of current sensor measurement zinc-air cell output, and the capacity that initial capacity deducts use draws residual capacity; Deposit " memory cell " in.
The capacity that uses promptly adds up electric weight, refers to through the record to discharge process and obtains emitting the electric weight summation, and formula is:
Wherein, C
TotalBe the accumulation electric weight of requirement, i
tBe the value in t moment current i, T
tBe carved into next time period constantly for from t the time, i.e. sampling interval is by adopting the frequency decision.
Average current according to output calculates under current working the operable time of zinc-air cell divided by residual capacity.
Show the time prompting user through LCD.
3, reset:
Zinc-air cell uses, and presses " zero clearing " button, and system advances " memory cell " to capacity setting for " 35AH " storage automatically.
After changing battery, use button, zero clearing, battery capacity is calculated since 100%.
This system can set different capacity, is applicable to the different capabilities zinc-air cell.
In sum; Zinc-air cell energy early warning system of the present invention is through the accurate mensuration to the accumulation discharge electricity amount; Judge the remaining electric weight of zinc-air cell; Further judge the time that battery can also use, thereby show that through LCD the time prompting user changes zinc electrode in the best opportunity, thereby ensure that the zinc and air cell battery pack has good performance and useful life.
Claims (5)
1. zinc-air cell energy early warning system; It is characterized in that: comprise control unit, LCD display unit, RS232 bus, memory cell, push-button unit, current sensor and A/D D/A conversion unit; Said control unit links to each other with computer through said RS232 bus; Said current sensor is arranged on zinc and air cell electric weight output; The signal that said current sensor collects converts digital signal to through said A/D D/A conversion unit and is delivered to said control unit, and said control unit is delivered to said LCD display unit and memory cell respectively after with signal processing, and said push-button unit is carried instruction to said control unit.
2. zinc-air cell energy early warning system according to claim 1, it is characterized in that: said push-button unit comprises the zero clearing button.
3. zinc-air cell energy early warning system according to claim 1, it is characterized in that: said control unit comprises 8952 single-chip microcomputers, sampling module and computing module; After the digital signal that said sampling module reception A/D D/A conversion unit converts to, be delivered to computing module, the consequential signal that said computing module will be analyzed gained is delivered to 8952 single-chip microcomputers, transfers out after by it signal further being handled.
4. zinc-air cell energy early warning system according to claim 3, it is characterized in that: said sampling module comprises sample circuit and sampling A, said sampling A is 7135 chips.
5. zinc-air cell energy early warning system according to claim 3 is characterized in that: the sample frequency that said sampling module adopts is: when electric current less than set point I
A, per minute sampling 1 time; When electric current greater than set point I
B, sampling in per 5 seconds 1 time; When electric current greater than set point I
C, per second sampling 2 times.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101486126A CN102709623A (en) | 2012-05-14 | 2012-05-14 | Energy capacity pre-warning system of zinc-air battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101486126A CN102709623A (en) | 2012-05-14 | 2012-05-14 | Energy capacity pre-warning system of zinc-air battery |
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| CN102709623A true CN102709623A (en) | 2012-10-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590439A (en) * | 2016-01-07 | 2016-05-18 | 苏州市职业大学 | Wireless management and prediction device for capacity of small-capacity batteries and control method |
| CN111403778A (en) * | 2020-03-27 | 2020-07-10 | 北京理工大学 | Open type uninterrupted power supply metal air fuel cell system |
-
2012
- 2012-05-14 CN CN2012101486126A patent/CN102709623A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590439A (en) * | 2016-01-07 | 2016-05-18 | 苏州市职业大学 | Wireless management and prediction device for capacity of small-capacity batteries and control method |
| CN111403778A (en) * | 2020-03-27 | 2020-07-10 | 北京理工大学 | Open type uninterrupted power supply metal air fuel cell system |
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Application publication date: 20121003 |