CN204359741U - A kind of densimeter for monitoring lead-acid accumulators electrolytic solution - Google Patents
A kind of densimeter for monitoring lead-acid accumulators electrolytic solution Download PDFInfo
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- CN204359741U CN204359741U CN201520080126.4U CN201520080126U CN204359741U CN 204359741 U CN204359741 U CN 204359741U CN 201520080126 U CN201520080126 U CN 201520080126U CN 204359741 U CN204359741 U CN 204359741U
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Abstract
The utility model discloses a kind of densimeter for monitoring lead-acid accumulators electrolytic solution, comprise cylindrical support body, the bottom of cylindrical support body is fixedly installed minus plate, positive plate, and minus plate, positive plate are arranged in cylindrical support body, and the barrel of cylindrical support body bottom has liquid drain hole; The bottom of cylindrical support body is provided with temperature sensor, the barrel on cylindrical support body top is provided with LED display, battery case, control circuit is provided with in the cylindrical shell on cylindrical support body top, directly the concentration of sulfuric acid can be embodied by electromotive force, there is measuring speed fast, can continue to the concentration of sulfuric acid in storage battery the advantage detected, and adaptive temperature scope is large, testing result degree of accuracy is high.
Description
Technical field
The utility model relates to a kind of lead-acid accumulators, specifically, relating to a kind of densimeter for monitoring lead-acid accumulators electrolytic solution, belonging to electronic technology field.
Background technology
Plumbic acid stores in use, and through charging and discharging repeatedly, battery pole plates there will be sulfuration, so-called sulfuration be exactly generate on battery polar plate a kind of macromeritic lead sulfate and cause.If sulfuration is not serious, the way that small area analysis can be adopted to charge for a long time, makes active substance restore.Conventional restored method is: first by accumulator by 20h(20 hour discharge time) discharge rate is discharged, and pours out whole electrolytic solution, with distilled water flushing several, reinject distilled water to standard liquid level, use small electric current charge, and measure the density of electrolytic solution at any time, when density increases to 1.15g/cm
3in time, stops charging.Then pour out the whole electrolytic solution in each single lattice, reinject distilled water, continues charging.So repeated multiple times, till the density of electrolytic solution no longer increases.Finally once discharge, then by its full charge, density of electrolyte is adjusted to desirable value.Accumulator after devulcanization charging, its capacity should return to more than 80% of rated capacity.The concentration constantly detecting sulfuric acid in storage battery is needed in repair process.
And the method detecting sulfuric acid concentration normally adopts hydrometer method, it is different to the refractive index of light according to the sulfuric acid of not concentration that hydrometer method surveys concentration, the principle work that the higher refraction angle to light of sulfuric acid concentration can be larger.So, after picnometer will being taken out when utilizing hydrometer method to survey concentration, under light source, observe the refraction angle of light, be then converted into the concentration of sulfuric acid; Now, during conversion due to sulfuric acid concentration and proportion, result temperature influence, when converting concentration after measuring proportion, also want controlled temperature to look into relevant form, draw the concentration that sulfuric acid is corresponding, complicated operation, measuring speed is slow; To convert the anaclasis obtained angle to electric signal, difficulty is very large, in this way cannot realize to sulfuric acid concentration continuous detecting at present.
Utility model content
The technical problems to be solved in the utility model is for above deficiency, a kind of densimeter for monitoring lead-acid accumulators electrolytic solution is provided, what overcome the existence of existing picnometer converts the defect that electric signal difficulty is large, cannot realize continuous detecting to by the refraction angle of light, after adopting densimeter of the present utility model, there is measuring speed fast, adaptive temperature scope is large, and degree of accuracy is high, can continue to the concentration of sulfuric acid in storage battery the advantage detected.
For solving above technical matters, the utility model is by the following technical solutions: a kind of densimeter for monitoring lead-acid accumulators electrolytic solution, it is characterized in that: comprise the cylindrical support body that insulating material is made, the bottom of cylindrical support body is fixedly installed minus plate, positive plate, minus plate, positive plate are arranged in cylindrical support body, minus plate adopts spongy lead powder to make, and positive plate adopts lithanode active substance to make, and the barrel of cylindrical support body bottom has liquid drain hole;
The bottom of described cylindrical support body is provided with temperature sensor, the barrel on cylindrical support body top is provided with LED display, battery case, control circuit is provided with in the cylindrical shell on cylindrical support body top, LED display, minus plate, temperature sensor, positive plate and control circuit are electrically connected, and temperature sensor is model is DS1624;
A shelf is provided with between the top of described cylindrical support body and the bottom of cylindrical support body.
A kind of prioritization scheme, described control circuit comprises single-chip microcomputer, constant-current discharge circuit, A/D change-over circuit and discharge resistance R1, and the model of single-chip microcomputer is AT89S52;
Described constant-current discharge circuit comprises field effect transistor T, resistance R2, resistance R3, resistance R6, operational amplifier U3, resistance R4, resistance R5 and electric capacity C1, one end of source electrode connecting resistance R2 of field effect transistor T, one end of resistance R6, the other end ground connection of resistance R2 also connects minus plate, one end of electric capacity C1 and the grounding leg of single-chip microcomputer, and the model of operational amplifier U3 is LM358.
Further, the inverting input of another termination operational amplifier U3 of described resistance R6, one end of other end connecting resistance R4 of electric capacity C1, one end of resistance R5, the in-phase input end of another termination operational amplifier U3 of resistance R4, the other end of resistance R5 meets the P1.2 of single-chip microcomputer, the grid of the output termination field effect transistor T of operational amplifier U3; The drain electrode of field effect transistor T connects one end of discharge resistance R1, another termination positive plate of discharge resistance R1 and A/D change-over circuit, the A/D analog to digital converter U2 of A/D change-over circuit to be model be ADC0809,26 pin of A/D analog to digital converter U2 connect positive plate, and 8,14,15,17,18,19,20,21 pin of A/D analog to digital converter U2 meet P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 of single-chip microcomputer respectively.
Further, the SDA(serial bus data input/output port of described temperature sensor), SCL(Serial Bus Clock port) pin meets P1.0 and P1.1 of single-chip microcomputer respectively.
After the utility model adopts above technical scheme, compared with prior art, have the following advantages: after adopting densimeter of the present utility model, the concentration of sulfuric acid is embodied by electromotive force, there is the advantage that measuring speed is fast, can carry out continuing to the concentration of sulfuric acid in storage battery detection, and adaptive temperature scope is large, testing result degree of accuracy is high.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of densimeter in the utility model embodiment;
Accompanying drawing 2 is theory diagrams of densimeter in the utility model embodiment;
Accompanying drawing 3 is circuit diagrams of control circuit in the utility model embodiment;
In figure,
1-cylindrical support body, 2-LED display screen, 3-battery case, 4-minus plate, 5-temperature sensor, 6-positive plate, 7-control circuit, 8-liquid drain hole, 9-shelf, 10-single-chip microcomputer.
Embodiment
Embodiment, as shown in Figure 1, a kind of densimeter for monitoring lead-acid accumulators electrolytic solution, comprise the cylindrical support body 1 that insulating material is made, the bottom of cylindrical support body 1 is fixedly installed minus plate 4, positive plate 6, minus plate 4, positive plate 6 is arranged in cylindrical support body 1, minus plate 4 adopts spongy lead powder to make, positive plate 6 adopts lithanode active substance to make, the barrel of cylindrical support body 1 bottom has liquid drain hole 8, electrolytic solution is allowed to enter between two battery lead plates during effect, react with two pole plates, produce and measure electromotive force, the bottom of cylindrical support body 1 is provided with temperature sensor 5, the barrel on cylindrical support body 1 top is provided with LED display 2, battery case 3, control circuit 7 is provided with in the cylindrical shell on cylindrical support body 1 top, LED display 2, minus plate 4, temperature sensor 5, positive plate 6 and control circuit 7 are electrically connected, a shelf 9 is provided with between the top of cylindrical support body 1 and the bottom of cylindrical support body 1, densimeter can be rested storage battery liquid bolt mouth place.During use, cylindrical support body 1 is inserted in storage battery through storage battery liquid bolt mouth, and the electrolysis liquid surface in storage battery did not have liquid drain hole 8.
As shown in Figure 2 and Figure 3, control circuit 7 comprises single-chip microcomputer 10, constant-current discharge circuit, A/D change-over circuit and discharge resistance R1, and the model of single-chip microcomputer 10 is AT89S52.
Constant-current discharge circuit comprises field effect transistor T, resistance R2, resistance R3, resistance R6, operational amplifier U3, resistance R4, resistance R5 and electric capacity C1, one end of source electrode connecting resistance R2 of field effect transistor T, one end of resistance R6, the other end ground connection of resistance R2 also connects minus plate 4, one end of electric capacity C1 and the grounding leg of single-chip microcomputer 10, and the model of operational amplifier U3 is LM358.
Adopt constant current source as the load of two detecting electrodes, one is overcome detecting electrode voltage virtual height phenomenon when zero load; Two is that voltage between detecting electrode raises owing to increasing with the concentration of sulfuric acid, if adopt general conductive discharge, discharge current there will be the phenomenon changed with voltage, affect measurement result, have employed current source loads, and it is accurate to measure.
The inverting input of another termination operational amplifier U3 of resistance R6, one end of other end connecting resistance R4 of electric capacity C1, one end of resistance R5, the in-phase input end of another termination operational amplifier U3 of resistance R4, the other end of resistance R5 meets the P1.2 of single-chip microcomputer 10, the grid of the output termination field effect transistor T of operational amplifier U3; The drain electrode of field effect transistor T connects one end of discharge resistance R1, another termination positive plate 6 of discharge resistance R1 and A/D change-over circuit;
The A/D analog to digital converter U2 of A/D change-over circuit to be model be ADC0809,26 pin of A/D analog to digital converter U2 connect positive plate 6,8,14,15,17,18,19,20,21 pin of A/D analog to digital converter U2 meet P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 of single-chip microcomputer 10 respectively, effect converts two polar plate voltages to 82 system numbers, is input to single-chip microcomputer 10.
Temperature sensor 5 for model be the SDA(serial bus data input/output port of the temperature sensors of high precision U1 of DS1624, temperature sensors of high precision U1), SCL(Serial Bus Clock port) pin meets P1.0 and P1.1 of single-chip microcomputer 10 respectively; Battery voltage is relevant with temperature, common numerical value is measured 25 degree time, the object adding temperature sensor detects storage battery working temperature, output signal is to single-chip microcomputer 10, the error produced at different operating temperature is revised when single-chip microcomputer 10 processes, those skilled in the art suitably can be arranged according to this explanation, are not described in detail at this.
Resistance R4, resistance R5 and electric capacity C1 form filtering circuit, the pulse signal that single-chip microcomputer 10 exports is by obtaining direct current signal after filtering circuit filtering, field effect transistor T conducting is controlled after amplifier, discharge loop is formed by two pole plates, resistance R1 is discharge resistance, resistance R2 is feedback resistance, and circuit adopts Current Negative Three-Point Capacitance, forms constant current source.
During use, densimeter is rested storage battery liquid bolt mouth place, shelf 9 plays and limits unknown effect, cylindrical support body 1 is inserted in storage battery through storage battery liquid bolt mouth, electrolysis liquid surface in storage battery did not have liquid drain hole 8, two complete submergences of detecting electrode are made to take by force in electrolytic solution, make detecting electrode and electrolytic solution generation electrochemical reaction, two detecting electrodes can produce electromotive force, the size of electromotive force is relevant with the concentration of sulfuric acid in electrolytic solution, when concentration of electrolyte is higher, electromotive force can be high, reaches the object continuing to detect sulfuric acid concentration like this.
The function of single-chip microcomputer 10 also can adopt traditional circuit to realize, and those skilled in the art, according to design principle of the present utility model, just can obtain without creative work, therefore be not described in detail.
Above densimeter is carried out the test of measuring lead-acid battery concentration of electrolyte, result is: when subzero 15 ± 1 degree, and degree of accuracy is ± 0.02%; When subzero 10 ± 1 degree, degree of accuracy is ± 0.014%; When subzero 6 ± 1 degree, degree of accuracy is ± 0.011%; When 0 ± 1 degree, degree of accuracy is ± 0.009%; When 10 ± 1 degree, degree of accuracy is ± 0.008%; When 15 ± 1 degree, degree of accuracy is ± 0.007%; When 20 ± 1 degree, degree of accuracy is ± 0.005%; When 25 ± 1 degree, degree of accuracy is ± 0.007%; When 30 ± 1 degree, degree of accuracy is ± 0.008%; When 35 ± 1 degree, degree of accuracy is ± 0.011%; When 40 ± 1 degree, degree of accuracy is ± 0.015%; When 45 ± 1 degree, degree of accuracy is ± 0.019%; When 50 ± 1 degree, degree of accuracy is ± 0.023%.
Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; to enable those skilled in the art better understand the utility model content; should not be understood as the restriction to the utility model protection domain; as long as according to the improvement that technical solutions of the utility model are done, all fall into protection domain of the present utility model.
Claims (4)
1. one kind for monitoring the densimeter of lead-acid accumulators electrolytic solution, it is characterized in that: comprise the cylindrical support body (1) that insulating material is made, the bottom of cylindrical support body (1) is fixedly installed minus plate (4), positive plate (6), minus plate (4), positive plate (6) are arranged in cylindrical support body (1), minus plate (4) adopts spongy lead powder to make, positive plate (6) adopts lithanode active substance to make, and the barrel of cylindrical support body (1) bottom has liquid drain hole (8);
The bottom of described cylindrical support body (1) is provided with temperature sensor (5), and the barrel on cylindrical support body (1) top is provided with LED display (2), battery case (3), is provided with control circuit (7) in the cylindrical shell on cylindrical support body (1) top;
Described LED display (2), minus plate (4), temperature sensor (5), positive plate (6) and control circuit (7) be electrically connected, temperature sensor (5) for model be DS1624;
A shelf (9) is provided with between the top of described cylindrical support body (1) and the bottom of cylindrical support body (1).
2. densimeter as claimed in claim 1, it is characterized in that: described control circuit (7) comprises single-chip microcomputer (10), constant-current discharge circuit, A/D change-over circuit and discharge resistance R1, the model of single-chip microcomputer (10) is AT89S52;
Described constant-current discharge circuit comprises field effect transistor T, resistance R2, resistance R3, resistance R6, operational amplifier U3, resistance R4, resistance R5 and electric capacity C1, one end of source electrode connecting resistance R2 of field effect transistor T, one end of resistance R6, the other end ground connection of resistance R2 also connects minus plate (4), one end of electric capacity C1 and the grounding leg of single-chip microcomputer (10), and the model of operational amplifier U3 is LM358.
3. densimeter as claimed in claim 2, it is characterized in that: the inverting input of another termination operational amplifier U3 of described resistance R6, one end of other end connecting resistance R4 of electric capacity C1, one end of resistance R5, the in-phase input end of another termination operational amplifier U3 of resistance R4, the other end of resistance R5 meets the P1.2 of single-chip microcomputer (10), the grid of the output termination field effect transistor T of operational amplifier U3;
The drain electrode of described field effect transistor T connects one end of discharge resistance R1, another termination positive plate (6) and A/D change-over circuit of discharge resistance R1, the A/D analog to digital converter U2 of A/D change-over circuit to be model be ADC0809,26 pin of A/D analog to digital converter U2 connect positive plate (6), and 8,14,15,17,18,19,20,21 pin of A/D analog to digital converter U2 meet P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 of single-chip microcomputer (10) respectively.
4. densimeter as claimed in claim 3, is characterized in that: the SDA(serial bus data input/output port of described temperature sensor (5)), SCL(Serial Bus Clock port) pin meets P1.0 and P1.1 of single-chip microcomputer (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080126.4U CN204359741U (en) | 2015-02-05 | 2015-02-05 | A kind of densimeter for monitoring lead-acid accumulators electrolytic solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080126.4U CN204359741U (en) | 2015-02-05 | 2015-02-05 | A kind of densimeter for monitoring lead-acid accumulators electrolytic solution |
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| Publication Number | Publication Date |
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| CN204359741U true CN204359741U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520080126.4U Withdrawn - After Issue CN204359741U (en) | 2015-02-05 | 2015-02-05 | A kind of densimeter for monitoring lead-acid accumulators electrolytic solution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634838A (en) * | 2015-02-05 | 2015-05-20 | 左海彤 | Concentration meter for monitoring electrolyte of lead-acid storage battery |
-
2015
- 2015-02-05 CN CN201520080126.4U patent/CN204359741U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634838A (en) * | 2015-02-05 | 2015-05-20 | 左海彤 | Concentration meter for monitoring electrolyte of lead-acid storage battery |
| CN104634838B (en) * | 2015-02-05 | 2017-05-17 | 左海彤 | Concentration meter for monitoring electrolyte of lead-acid storage battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |