CN103529877A - Method for controlling charging and discharging temperatures of storage battery - Google Patents
Method for controlling charging and discharging temperatures of storage battery Download PDFInfo
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- CN103529877A CN103529877A CN201310442678.0A CN201310442678A CN103529877A CN 103529877 A CN103529877 A CN 103529877A CN 201310442678 A CN201310442678 A CN 201310442678A CN 103529877 A CN103529877 A CN 103529877A
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Abstract
The invention discloses a method for controlling charging and discharging temperatures of a storage battery, which relates to the field of storage battery machining and solves the technical problem that a temperature value of a certain point in the storage battery can be only measured when the temperature of the storage battery is measured by utilizing a mercurial thermometer or an alcohol thermometer in a process of controlling the charging and discharging temperatures of the storage battery in the prior art. The method comprises the following steps of carrying out stereo measurement on each part of the storage battery by utilizing an infrared thermal imager; when measuring that the temperature of a certain part of the storage battery is close to a preset value, reducing the temperature by utilizing a cooling manner. According to the method for controlling the charging and discharging temperature of the storage battery, which is disclosed by the invention, the limitation of the current temperature measurement is overcome, the highest temperature point of the storage battery can be immediately found out, and the temperature is controlled immediately, so that the influence, caused by overhigh temperature of the storage battery, on product performances is reduced.
Description
[technical field]
The present invention relates to accumulator production field, especially a kind of technique of controlling accumulator cell charging and discharging temperature.
[background technology]
Accumulator changes into or activates in charging process, because charge efficiency can not reach 100%, therefore be not used to the electric energy conversion of active substance conversion, is heat energy.And accumulator is connected into connecting portion in loop when there is loose contact, this position contact resistance can increase, according to Joule heat computing formula Q=I
2q in Rt(formula: joule's heat energy, I: electric current, R: resistance, t: the time).The joule's heat energy producing when resistance increases increases.The in the situation that of excess Temperature, not only can affect the properties of product of accumulator, severe patient can cause the accumulator in charge and discharge process to catch fire, and causes huge economic loss.The method of existing control accumulator cell charging and discharging temperature is with mercury thermometer or alcohol thermometer probe temperature, test to after excess Temperature to its processing of lowering the temperature, but mercury thermometer or alcohol thermometer can only be inserted in the temperature of measuring electrolytic solution in the electrolytic solution of accumulator, the temperature of test is the temperature value of certain point in accumulator, but the specific heat capacity of each assembly of accumulator is different, therefore in accumulator charging/discharging process under identical electric current, in accumulator, the temperature of all parts is different, so accuracy is not high.
[summary of the invention]
The technical matters that the present invention solves is to provide a kind of method of controlling accumulator cell charging and discharging temperature, by infrared thermography, the temperature at each position of accumulator is carried out to measurement in space, can find in time the maximum temperature of accumulator and the position that produces maximum temperature.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A method of controlling accumulator cell charging and discharging temperature, comprises the following steps:
A, to storage battery acidification, and before discharging and recharging beginning, by infrared thermography, detect the temperature of accumulator, when the temperature at certain position approaches predetermined value in accumulator, by cooling measure, reduce temperature;
B, accumulator line power on, and discharge and recharge and carry out, after 0.5h～1h, detecting the temperature of accumulator by infrared thermography, when the temperature at certain position approaches predetermined value in accumulator, take cooling measure to reduce temperature;
C, every 1h～3h, by infrared thermography, detect the temperature of accumulator, until discharge and recharge end, when the temperature at certain position approaches predetermined value in accumulator being detected, take cooling measure to reduce temperature.
Further, in b step, when the terminals temperature of accumulator approaches predetermined value, the terminals of loose contact and bad wire are changed, or the surface treatment of carrying out terminals is to reduce contact resistance.
Further, in testing process, crossing of the infrared thermography inspection sidewall of accumulator, the top cover of accumulator and accumulator takeed on, and in the time cannot reaching cooling-down effect by cooling measure, accumulator taken out.
Further, described cooling measure comprises air-cooled, water-cooled, reduction electric current and shutdown.
Further, first by air-cooled or water-cooled, lower the temperature, when air-cooled and water-cooled cannot reach cooling-down effect, further by reducing electric current or shutdown, lower the temperature.
Beneficial effect of the present invention:
The present invention carries out measurement in space by infrared thermography to each position of accumulator, when the temperature at certain position approaches predetermined value in accumulator being detected, takes cooling measure to reduce temperature; The present invention has overcome existing thermometric limitation, can find in time the maximum temperature point in accumulator, control in time temperature, to reduce, because battery temp is too high, cause the impact on properties of product, can also effectively avoid accumulator to catch fire, reduce the generation of security incident.
These features of the present invention and advantage will embodiment below in detailed exposure.
[embodiment]
Below in conjunction with matrix embodiment, technical scheme of the present invention is elaborated, but following embodiment is only the preferred embodiments of the present invention, not all.Embodiment based in embodiment, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection scope of the present invention.
A kind of method of controlling accumulator cell charging and discharging temperature of the present invention, specifically comprises the following steps:
First, to acid adding in all accumulators, and before discharging and recharging beginning, with infrared thermography, detect one by one the temperature of accumulator, when the temperature at certain position approaches predetermined value in accumulator, by cooling measure, reduce temperature; Lead plaster reaction during acid adding on sulfuric acid and pole plate, because lead plaster is alkalescence, can emit a large amount of heat with sour neutralization reaction, therefore in acid adding, also needs to control the temperature of accumulator.
Then, a plurality of accumulators are linked to be loop, and it is powered on, and operation discharges and recharges program and changes into processing or activation processing; Carry out, after 0.5h～1h, by infrared thermography, detecting one by one the temperature of accumulator in loop, when the temperature at certain position approaches predetermined value in accumulator, take cooling measure to reduce the temperature of accumulator, temperature is controlled in safe range; In this step, mainly check the temperature of battery terminal and wiring; Due to the bad or reason of part quality of assembling, after powering on, the terminals temperature of accumulator rises rapidly, when battery terminal temperature being detected and approach predetermined value, detect terminals and wire, the screw of tightening or be rotationally connected place that can be suitable, or the surface treatment of docking line end, removes surperficial embroidery, oxide, grease etc. to reduce contact resistance; And the terminals of loose contact and bad wire are changed;
Afterwards, every 1h～3h, by infrared thermography, detect one by one the temperature of accumulator, until discharge and recharge end, when the temperature at certain position approaches predetermined value in accumulator being detected, take cooling measure to reduce temperature.In testing process, infrared thermography is mainly examined the shoulder of crossing of the sidewall of accumulator, the top cover of accumulator and accumulator, because the thermal value at these positions is larger, easily occurs temperature drift.And when adopting cooling measure to reach cooling-down effect, problematic accumulator is taken out from loop, avoid working the mischief, all the other normal accumulators work on.
In this testing process, preferred predetermined value is 60 ℃, when infrared thermography detects temperature higher than 55 ℃, start at once cooling measure, temperature is dropped to below 40, under this temperature range, can prevent the serious aquation of the inner appearance of battery separator, cause lead sulfate solubleness to strengthen and cause the dissolving of lead plaster or the corrosion of grid aggravation, affect battery life; Can avoid the organic expander of negative pole to accelerate stripping and decomposition from negative electrode active material, and cause the negative pole degradation of battery; Avoid battery cell case distortion.
That the cooling measure adopting comprises is air-cooled, water-cooled, reduction electric current and shutdown.The mode of air-cooled employing exhausting is extracted the hot blast of areas of higher temperature out, takes away heat; Water-cooled is water-bath, and the shelf of placing accumulator is placed in water bath, and the water circulation of water bath the inside flows and carries out heat exchange cooling with accumulator; According to Joule heat computing formula, known reduction electric current can reduce thermal value; After directly shutting down, stop producing heat, natural heat dissipation reduces temperature.
While taking cooling measure, first by air-cooled or water-cooled, lower the temperature, can adopt separately, also can both combine use.If still cannot reach cooling-down effect, further by reducing electric current or shutdown, to lower the temperature, in this process, air-cooled or water-cooled can keep work.
Infrared thermography in the present invention comprises display screen, the camera lens of focus adjustable and processor, hand-held infrared thermography is aimed at accumulator, by the infrared radiation of shot detection accumulator, and pass through opto-electronic conversion, the means such as signal processing convert data message to, processor converts the temperature distribution image of accumulator to video image according to data message and is presented on display screen, and can in video image, indicate maximum temperature by processor, the size of maximum temperature and the position of maximum temperature, can be quick, comprehensively detect the temperature of accumulator, guaranteed the reliable control of temperature, and can find out the higher reason of heating according to the position that produces high temperature.The detection speed of this invention is fast, efficiency is high, and for example there are 400 batteries the inside, 20 loops, and having detected all accumulators only needs the time about 15 minutes.
In addition, after accumulator cell charging and discharging finishes, integrate the graphical information of infrared thermography, make detailed temperature report to discharging and recharging program, cooling program carries out necessary adjustment.
By above-described embodiment, object of the present invention is by fully effective having reached.The personage who is familiar with this technology should be understood that and the present invention includes but not limit the content of describing in embodiment above.Anyly do not depart from modification of the present invention and all will be included in the scope of claims.
Claims (5)
1. control a method for accumulator cell charging and discharging temperature, it is characterized in that comprising the following steps:
A, to storage battery acidification, and before discharging and recharging beginning, by infrared thermography, detect the temperature of accumulator, when the temperature at certain position approaches predetermined value in accumulator, by cooling measure, reduce temperature;
B, accumulator line power on, and discharge and recharge and carry out, after 0.5h～1h, detecting the temperature of accumulator by infrared thermography, when the temperature at certain position approaches predetermined value in accumulator, take cooling measure to reduce temperature;
C, every 1h～3h, by infrared thermography, detect the temperature of accumulator, until discharge and recharge end, when the temperature at certain position approaches predetermined value in accumulator being detected, take cooling measure to reduce temperature.
2. a kind of method of controlling accumulator cell charging and discharging temperature according to claim 1, it is characterized in that: in b step, when the terminals temperature of accumulator approaches predetermined value, the terminals of loose contact and bad wire are changed, or the surface treatment of carrying out terminals is to reduce contact resistance.
3. a kind of method of controlling accumulator cell charging and discharging temperature according to claim 1 and 2, it is characterized in that: in testing process, crossing of the infrared thermography inspection sidewall of accumulator, the top cover of accumulator and accumulator takeed on, in the time cannot reaching cooling-down effect by cooling measure, accumulator is taken out.
4. a kind of method of controlling accumulator cell charging and discharging temperature according to claim 1 and 2, is characterized in that: described cooling measure comprises air-cooled, water-cooled, reduction electric current and shutdown.
5. a kind of method of controlling accumulator cell charging and discharging temperature according to claim 4, is characterized in that: first by air-cooled or water-cooled, lower the temperature, when air-cooled and water-cooled cannot reach cooling-down effect, further by reducing electric current or shutdown, lower the temperature.
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| CN201310442678.0A CN103529877B (en) | 2013-09-25 | 2013-09-25 | A kind of method controlling accumulator cell charging and discharging temperature |
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| CN201310442678.0A CN103529877B (en) | 2013-09-25 | 2013-09-25 | A kind of method controlling accumulator cell charging and discharging temperature |
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| CN103529877B CN103529877B (en) | 2016-08-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004999A (en) * | 2014-04-09 | 2015-10-28 | 罗伯特·博世有限公司 | Apparatus for detecting battery pack, method, battery, battery system and vehicle |
| CN105739569A (en) * | 2016-04-21 | 2016-07-06 | 杭州诺亚方舟网络科技有限公司 | Temperature-control system for power bank |
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| US5459391A (en) * | 1990-08-28 | 1995-10-17 | Sony Corporation | Battery charger with temperature detector |
| CN201084780Y (en) * | 2007-06-14 | 2008-07-09 | 深圳市比克电池有限公司 | A battery paste container |
| CN101299475A (en) * | 2008-06-03 | 2008-11-05 | 范汉强 | Cooling method for rapidly charging accumulator and apparatus thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105004999A (en) * | 2014-04-09 | 2015-10-28 | 罗伯特·博世有限公司 | Apparatus for detecting battery pack, method, battery, battery system and vehicle |
| CN105739569A (en) * | 2016-04-21 | 2016-07-06 | 杭州诺亚方舟网络科技有限公司 | Temperature-control system for power bank |
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| CN103529877B (en) | 2016-08-24 |
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