CN109065831B - Electrolyte mixing device for lead-acid storage battery - Google Patents
Electrolyte mixing device for lead-acid storage battery Download PDFInfo
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- CN109065831B CN109065831B CN201810672841.5A CN201810672841A CN109065831B CN 109065831 B CN109065831 B CN 109065831B CN 201810672841 A CN201810672841 A CN 201810672841A CN 109065831 B CN109065831 B CN 109065831B
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 128
- 238000002156 mixing Methods 0.000 title claims abstract description 60
- 239000002253 acid Substances 0.000 title claims abstract description 58
- 238000009434 installation Methods 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013517 stratification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/70—Arrangements for stirring or circulating the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4214—Arrangements for moving electrodes or electrolyte
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The application relates to a lead-acid storage battery electrolyte mixing device, which comprises a storage tank (1), an inflow port (2), an outflow port (3) and a guide plate (4). The mixing device is arranged on a battery cell of the lead-acid storage battery for the automobile, and electrolyte in the battery cell can enter the storage tank (1) from the inflow opening (2) when the automobile accelerates, decelerates, goes up a slope, goes down a slope or turns. When the automobile resumes steady running, the electrolyte inside and outside the storage tank (1) has a height difference so as to generate a pressure difference, the electrolyte in the storage tank (1) mainly flows back to the battery cell through the outflow opening (3), and the electrolyte in the battery cell flows from bottom to top, so that the electrolyte is promoted to be uniformly mixed. The mixing device has the advantages of simple structure, convenient installation and low cost.
Description
Technical Field
The invention relates to the technical field of lead-acid storage batteries, in particular to a lead-acid storage battery electrolyte mixing device.
Background
Lead-acid batteries are currently still the most dominant secondary battery in addition to portable power sources, and have been widely used as starting or power sources for automobiles, motorcycles, electric bicycles, trains, submarines, and backup power sources for computers and communication devices. However, lead acid batteries suffer from electrolyte stratification.
When the electrolyte is initially injected into a lead acid battery, the density of the entire electrolyte is uniform. However, in the charge and discharge process, the density of the electrolyte varies from place to place due to the electrochemical reaction, which eventually results in the density of the lower electrolyte being greater than that of the upper electrolyte. The chemical charge-discharge reactions of lead-acid batteries are as follows:
discharging: pb+PbSO 4 + H 2 SO 4 → 2PbSO 4 + H 2 O
Charging: 2PbSO 4 + H 2 O → Pb + PbSO 4 + H 2 SO 4
In the discharging process, sulfuric acid contacted with the surface of the active substance firstly reacts to generate water, and the water newly generated by the reaction has lower density than the electrolyte and is inevitably floated upwards in the diffusion motion. In the charging process, the nascent sulfuric acid is continuously generated on the polar plates, and the density value of the nascent sulfuric acid is larger than that of the electrolyte in the middle of the two polar plates, so that the nascent sulfuric acid is inevitably settled downwards in the diffusion movement. As a result of these two movements, the lead-acid battery has a density of the electrolyte which is small and large after a period of use, i.e. the electrolyte is layered.
This electrolyte stratification phenomenon is very detrimental to lead acid batteries, including but not limited to the following:
(1) The densities of electrolyte at the upper part and the lower part of the polar plate are different, and the active substances on the polar plate show potential difference, so that the self-discharge of the short circuit of the polar plate, namely concentration discharge, is caused.
(2) Electrolyte at the lower part of the polar plate has high density and high corrosiveness, and the corrosion of the separator and the polar plate is accelerated.
(3) The Open Circuit Voltage (OCV) corresponding to the state of charge (SOC) is inaccurate, and the power management system (BMS) cannot accurately monitor the battery state, affecting the battery life.
Damage caused by electrolyte stratification is present in almost all lead-acid batteries, particularly in flooded batteries. For the lead-acid storage battery liquid for the automobile, the electrolyte layering cannot be eliminated by the running vibration of the automobile alone. To solve this problem, a method of increasing a charging voltage is adopted in the industry to decompose water to generate gas, and the electro-liquid is stirred to be uniform when bubbles float up, which is called equalizing charge in a charging process. However, this is not an ideal method, and it is preferable to agitate the electro-hydraulic fluid with compressed air, but it is necessary to provide gas passages in the lead-acid battery structure.
Chinese patent application publication CN 101743651A (name: battery with electrolyte mixing device, publication date: 16 th of 2010) and chinese patent application publication CN 105122503A (name: battery with electrolyte mixing device, publication date: 12 nd of 2015) disclose electrolyte mixing devices for lead-acid storage battery of vehicle, which are placed in electrolyte, and which mainly utilize electrolyte level change during acceleration and braking of vehicle to promote uniform mixing of electrolyte. However, these electrolyte mixing devices still have a problem in that the structure is relatively complicated.
Disclosure of Invention
The invention aims to provide a simpler lead-acid storage battery electrolyte mixing device.
In order to solve the technical problem, the lead-acid storage battery electrolyte mixing device comprises a storage tank, an inflow port, an outflow port and a guide plate. The reservoir is enclosed by a bottom wall and two opposing long side walls (i.e., a first long side wall and a second long side wall) and two opposing short side walls (i.e., a first short side wall and a second short side wall), the inflow opening is located at the first short side wall, the outflow opening is located at a position of the bottom wall near the second short side wall, and the baffle extends from the lower surface of the bottom wall parallel to the second short side wall such that the outflow opening is located between the second short side wall and the baffle. Preferably, the area of the outflow opening is larger than the area of the inflow opening.
When in use, the mixing device is arranged on the battery cell of the lead-acid storage battery. In order to stably mount the mixing device on the battery cell, fastening members, such as snap-fit members, are further included on the mixing device. In a preferred embodiment of the invention, the fastening means are located on one or both long side walls of the mixing device. Such fastening means, for example snap-on means, may be of conventional design, provided that the reservoir is not covered by electrolyte in the cells of the lead-acid battery after placement of the mixing device. Correspondingly, after the mixing device is installed, the guide plate is vertically inserted into the electrolyte and forms a gap with the side wall of the cell.
In one embodiment of the invention, the length of the long side wall of the reservoir is greater than half the length of the cell. In another embodiment of the invention, the length of the long side wall of the reservoir is less than half the length of the cell. In a preferred embodiment of the invention, the length of the long side wall of the reservoir is one-quarter to three-quarters of the length of the cell. In a more preferred embodiment of the invention, the length of the long side wall of the reservoir is half the length of the cell.
In one embodiment of the invention, the lower surface of the bottom wall of the reservoir is located above the electrolyte level, i.e. the lower surface of the bottom wall of the reservoir is not in contact with the electrolyte. In another embodiment of the invention, the lower surface of the bottom wall of the reservoir just contacts the electrolyte level. In yet another embodiment of the invention, the lower surface of the bottom wall of the reservoir is below the electrolyte level, i.e. the reservoir is immersed in the electrolyte but not, as previously described, is not submerged by the electrolyte.
In one embodiment of the invention, the inflow opening is located in the first short side wall and adjoins the bottom wall of the reservoir. In another embodiment of the invention, the inflow opening is located in the first short side wall at a distance from the bottom wall of the reservoir. In one embodiment of the invention, the inflow is one. In another embodiment of the invention, the inflow openings are two or more. In the embodiment of the present invention, the shape and size of the convection inlet are not particularly limited as long as the size of the first short side wall and the distance from the bottom wall are adapted. In a preferred embodiment of the invention, the inflow openings are two circular openings which are connected to the bottom wall of the reservoir.
In one embodiment of the invention, the outflow opening is not contiguous with both the second short side wall and the baffle, but is spaced from the second short side wall and the baffle by a portion of the bottom wall. In another embodiment of the invention, the outflow opening is connected to the second short side wall but not to the baffle, with a portion of the bottom wall being spaced from the baffle. In yet another embodiment of the invention, the outflow opening is connected to the baffle but not to the second short side wall, but is spaced apart from the second short side wall by a portion of the bottom wall. In yet another embodiment of the invention, the outflow opening is connected to both the second short side wall and the deflector. In one embodiment of the invention, the outflow opening is one. In another embodiment of the invention, the outflow openings are two or more. In the embodiment of the present invention, the shape and size of the convection outlet are not particularly limited as long as the distance from the second short sidewall and the baffle is adapted. In a preferred embodiment of the invention, the outflow opening is a rectangular opening bordering both the second short side wall and the deflector.
In the embodiment of the invention, the length of the baffle plate is not limited, as long as the mixing device is arranged on the cell of the lead-acid storage battery, and a space exists between the end of the baffle plate, which is far away from the bottom wall of the storage tank, and the bottom of the cell. In a preferred embodiment of the invention, the length of the baffle is such that the distance between the end of the baffle remote from the bottom wall of the reservoir and the bottom of the cell is less than half the depth of the electrolyte of the lead acid battery, more preferably less than one quarter the depth of the electrolyte of the lead acid battery.
In one embodiment of the invention, the second short side wall extends a distance from the bottom wall in the length direction of the baffle. In one embodiment of the invention, the second short side wall extends from the bottom wall to the length of the baffle plate a distance of less than half the electrolyte depth of the lead acid battery, more preferably less than one quarter the electrolyte depth of the lead acid battery.
In one embodiment of the invention, the bottom wall is flat. In another embodiment of the invention, the bottom wall is stepped, wherein the outflow opening is located in the lower step.
The beneficial effects of the invention are that
The electrolyte mixing device of the lead-acid storage battery is arranged in a battery cell of the lead-acid storage battery serving as an automobile power supply. During acceleration (e.g. start-up), deceleration (e.g. braking), uphill, downhill and turning of the car, some electrolyte enters the reservoir through the inflow opening or even over the first short side wall in case of a high degree of inclination, due to the tilting of the electrolyte level containing sulfuric acid in the cell from the horizontal position. When the automobile resumes smooth running, the electrolyte level in the cell is restored to the horizontal position, and the electrolyte in the storage tank is also restored to the horizontal position, but the level thereof is higher than the electrolyte level in the cell, so that there is a height difference, resulting in a pressure difference. Under the action of the pressure difference, most of electrolyte in the cell flows out of the storage tank from the flow inlet except for a small amount of electrolyte flows back to the cell from the flow outlet, flows to the cell under the flow guide of the flow guide plate, forces the electrolyte below the flow outlet to flow downwards in the cell, and further forces the electrolyte with higher density below the cell to flow upwards to be mixed with the electrolyte with lower density above the cell, so that the density of the electrolyte in the cell tends to be consistent, and the layering phenomenon of the electrolyte is avoided. The mixing device has a simple structure, is easy to install in the lead-acid storage battery, and realizes the mixing of the electrolyte of the lead-acid storage battery with low modification cost.
Drawings
FIG. 1 is a perspective view, from one angle, of a lead acid battery electrolyte mixing apparatus according to one embodiment of the present invention; in the figure the reference numeral 1 denotes a reservoir, 2 denotes an inflow, 3 denotes an outflow, 4 denotes a baffle, 5 denotes a bottom wall, 6 denotes a first short side wall, 6 'denotes a second short side wall, 7 denotes a first long side wall, and 7' denotes a second long side wall.
Fig. 2 is a perspective view of the lead acid battery electrolyte mixing apparatus according to the present invention from another angle, according to one embodiment.
FIG. 3 is a schematic diagram showing the installation of the electrolyte mixing apparatus for a lead-acid battery of the present invention in a cell of a lead-acid battery according to one embodiment; in the figure, reference numeral A denotes a cell, B denotes an electrolyte liquid level, C denotes a mixing device, and D denotes a cell plate.
Fig. 4 is a schematic diagram showing the principle of action of the electrolyte mixing device for the lead-acid storage battery according to one embodiment of the invention.
Fig. 5 is a graph showing experimental effects of mixing electrolyte by the mixing apparatus of fig. 1.
Detailed Description
The invention will now be described in further detail with reference to the following examples in conjunction with the accompanying drawings.
Fig. 1 shows an exemplary, typical lead-acid battery electrolyte mixing apparatus of the present invention. The basic structure comprises a storage tank 1, an inflow port 2, an outflow port 3 and a deflector 4. The sump 1 is surrounded by a bottom wall 5 and two opposite long side walls, i.e. a first long side wall 7 and a second long side wall 7', and two opposite short side walls, i.e. a first short side wall 6 and a second short side wall 6', the inflow opening 2 being located at the first short side wall 6, the outflow opening 3 being located at a position of the bottom wall 5 near the second short side wall 6', the baffle 4 extending from the lower surface of the bottom wall 5 parallel to the second short side wall 6', such that the outflow opening 3 is located between the second short side wall 6' and the baffle 4. The area of the outflow opening 3 is designed to be larger than the area of the inflow opening 2.
As shown in fig. 1, the inflow port 2 is two circular holes connected with the bottom wall 5 of the reservoir 1, the outflow port 3 is a rectangular hole connected with both the second short side wall 6 'and the baffle 4, and the second short side wall 6' extends from the bottom wall 5 to a certain distance in the length direction of the baffle 4. In fig. 1 and 2, the second short side wall 6 'is shown to be somewhat wider than the first short side wall 6, i.e. the width of the reservoir 1 at the second short side wall 6' is slightly larger than the rest of the reservoir 1. But the width of the second short side wall 6' may also be the same as the first short side wall 6.
Fig. 3 shows the exemplary, typical blending assembly of fig. 1 mounted to a battery compartment of a lead acid battery. The mixing device is firmly mounted to the battery cell by fastening members (not shown). The fixing component may be a buckling component integrally formed with the first long side wall 7 and the second long side wall 7' of the storage tank 1, so as to be detachably buckled on the side wall of the battery cell.
As shown in fig. 3, the lower surface of the bottom wall 5 of the reservoir 1 just touches the electrolyte level. Although the lower surface of the bottom wall 5 of the tank 1 may also be located below the electrolyte level, i.e. the tank 1 is immersed in the electrolyte, the tank 1 should not be submerged by the electrolyte, i.e. the electrolyte enters the tank 1 when the electrolyte level is horizontal, i.e. when the car in which the lead-acid battery with the mixing device is installed is running smoothly. If so, the mixing device will not be able to act to mix the electrolyte and reduce electrolyte stratification during acceleration (e.g., start-up), deceleration (e.g., braking), uphill, downhill, or turning of the vehicle.
As shown in fig. 3, the length of the long side wall of the storage tank 1 is half the length of the battery cell. This length of the long side walls of the reservoir 1 is such that when the electrolyte of the cell is tilted during acceleration, deceleration, uphill, downhill or turning of the car, the level center line of the tilted electrolyte substantially coincides with the junction of the first short side wall 6 and the bottom wall 5 of the reservoir 1. This situation is more suitable for most acceleration, deceleration, uphill, downhill or steering situations of the car than if the length of the long side wall of the reservoir 1 is greater than or equal to half the length of the cell.
As shown in fig. 3, when the mixing device is mounted on the cell of the lead-acid storage battery, the distance between the end of the baffle plate 4 away from the bottom wall 5 of the storage tank 1 and the bottom of the cell is smaller than one fourth of the electrolyte depth of the lead-acid storage battery, and the distance is relatively close to the bottom of the cell, which helps to guide the electrolyte in the storage tank 1 to flow back to the cell through the outflow opening 3 as much as possible, so that the electrolyte with higher density at the bottom of the cell is forced to flow to the upper part of the cell and mix with the electrolyte with lower density at the upper part of the cell, so that the electrolyte density is uniform and the electrolyte layering phenomenon is prevented.
As shown in fig. 3, the second short side wall 6' extends from the bottom wall 5 to the guide plate 4 in the length direction by a distance less than one-fourth of the electrolyte depth of the lead-acid battery. The extension of the second short side wall 6' from the bottom wall 5 to the length of the deflector 4 is not necessary, but it contributes to a better diversion of electrolyte flowing back into the cell through the outflow opening 3, at the outflow opening 3, preventing the electrolyte flowing back into the cell from prematurely mixing with the electrolyte in the cell and not forcing the higher density electrolyte in the lower part of the cell well towards the upper part of the cell.
Fig. 4 is a view showing a state of the lead-acid battery equipped with the mixing device shown in fig. 3 when the automobile is ascending, from which the operation principle of the mixing device can be understood. As shown in fig. 4, when the vehicle is ascending a slope, the lead-acid battery mounted in the lateral direction (i.e., the longitudinal direction of the battery compartment is parallel to the longitudinal direction of the vehicle body) is inclined backward, and the electrolyte in the battery compartment is kept in a horizontal state, but is inclined with respect to the bottom (or top) plane of the battery compartment. Since the mixing device is fixedly installed at the left side of the cell (as shown in fig. 4), the electrolyte inclined in the cell flows into the storage tank 1 through the inflow port 2 of the mixing device, and gradually forms an inclined liquid level in the storage tank 1. When the vehicle resumes flat running after ascending a slope, the lead-acid battery resumes a horizontal state, the electrolyte in the cell is horizontal with respect to the cell bottom (or top) plane, and the electrolyte in the reservoir 1 is also horizontal with respect to the cell bottom (or top) plane. However, since some electrolyte flows in from the inflow port 2 when inclined, the level of the electrolyte in the reservoir 1 is higher than that in the cells, thereby forming a difference in the level of the electrolyte inside and outside the reservoir 1. This difference in height results in a pressure difference forcing the electrolyte in the reservoir 1 to flow back to the cell through the outflow opening 3. Since the area of the outflow port 3 is designed to be larger than that of the inflow port 2, most of the electrolyte flows back to the cell through the outflow port 3, although some of the electrolyte in the reservoir 1 flows back to the cell through the inflow port 2. The electrolyte flowing back to the cell from the outflow opening 3 is guided to the bottom of the cell through the flow guide of the flow guide plate 4, so that the electrolyte with higher density at the bottom of the cell is forced to flow upwards and mix with the electrolyte with lower density at the upper part of the cell, the density of the electrolyte in the cell is enabled to be consistent, and the layering phenomenon of the electrolyte is avoided.
When the gradient of the vehicle is large, the inclined electrolyte can flow not only into the tank 1 through the inflow opening 2 of the mixing device, but also directly into the tank 1 beyond the first short side wall 6 of the tank 1 of the mixing device. When the automobile resumes flat running, the electrolyte level in the storage tank 1 is higher than the electrolyte level outside the storage tank 1, and the electrolyte is promoted to be uniformly mixed due to the existence of the height difference and the pressure difference as described above.
Although fig. 4 shows the flow condition of the electrolyte when the automobile is ascending a slope, it is also applicable to the condition when the automobile is accelerating (e.g., starting). If the blending means is mounted on the right side of the battery compartment in fig. 4, it is suitable for use in a downhill or deceleration (e.g., braking) situation of the vehicle. If the lead-acid storage battery is longitudinally arranged on the automobile (namely, the length direction of the battery cell is perpendicular to the length direction of the automobile body), when the automobile turns, the inclination of the electrolyte can also cause the height difference and the pressure difference of the electrolyte inside and outside the storage tank 1, and finally, the electrolyte is promoted to be uniformly mixed.
Fig. 5 shows the electrolyte mixing effect using the mixing device of fig. 1 in a lead-acid battery. And adding three kinds of electrolyte with different densities at the bottom, the middle and the top of the battery, and simulating the layering phenomenon of the electrolyte. The battery is placed in the experimental rocker to simulate the inclination of the battery mounted on the automobile as the automobile goes up and down a slope. The swinging angle is 13 degrees, the swinging times are 1 time in 5 seconds, and the total swinging times are 150 times. Top density was measured once every 10 swings. After 150 swings, the density of the top electrolyte was measured to be 1.275g/ml, which is a significant improvement over its initial density of 1.206 g/ml. In contrast, in the comparative test without using the mixing apparatus, the density of the top electrolyte after 150 times of shaking was measured to be 1.218g/ml, which is not greatly improved compared to the initial density of 1.205 g/ml. The experiment proves that the mixing device has good effect on mixing electrolyte.
The invention has been described in terms of specific embodiments, but are only used to facilitate understanding of the invention and are not intended to limit the invention. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (8)
1. The utility model provides a lead acid battery electrolyte mixing device for install in the battery compartment of lead acid battery, mixing device includes reservoir (1), inflow port (2), egress opening (3) and guide plate (4), reservoir (1) is enclosed by diapire (5), relative first long lateral wall and second long lateral wall, relative first short lateral wall and second short lateral wall, inflow port (2) are located first short lateral wall (6), egress opening (3) are located near the position of second short lateral wall (6 ') of diapire (5), guide plate (4) are parallel to second short lateral wall (6 ') extend from the lower surface of diapire (5) such that egress opening (3) are located between second short lateral wall (6 ') and guide plate (4);
the mixing device further comprises a fastening part which enables the mixing device to be firmly installed on the battery cell;
the area of the outflow opening (3) is larger than the area of the inflow opening (2);
the inflow opening (2) is two round holes connected with the bottom wall (5);
the outflow opening (3) is not connected to both the second short side wall (6 ') and the baffle (4), or to one of the second short side wall (6 ') and the baffle (4), or to both the second short side wall (6 ') and the baffle (4).
2. The lead-acid battery electrolyte mixing device according to claim 1, characterized in that the length of the first and second long side walls of the reservoir (1) is one-quarter to three-quarters of the length of the cell.
3. The lead-acid battery electrolyte mixing device according to claim 2, wherein the length of the first and second long side walls of the reservoir (1) is half the length of the cell.
4. The lead-acid battery electrolyte mixing device according to claim 1, characterized in that the outflow opening (3) is a rectangular opening which is connected to both the second short side wall (6') and the deflector (4).
5. The lead-acid battery electrolyte mixing device according to claim 1, characterized in that the length of the deflector (4) is such that the distance between the end of the deflector (4) remote from the bottom wall (5) and the bottom of the cell is less than half the depth of the lead-acid battery electrolyte.
6. The lead-acid battery electrolyte mixing device according to claim 5, characterized in that the length of the deflector (4) is such that the distance between the end of the deflector (4) remote from the bottom wall (5) and the bottom of the cell is less than one quarter of the depth of the lead-acid battery electrolyte.
7. The lead-acid battery electrolyte mixing device according to claim 1, characterized in that the second short side wall (6') extends from the bottom wall (5) to the length direction of the deflector (4) for a distance less than half the depth of the lead-acid battery electrolyte.
8. The lead acid battery electrolyte mixing apparatus of claim 7 wherein the extended distance is less than one-fourth the depth of the lead acid battery electrolyte.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810672841.5A CN109065831B (en) | 2018-06-26 | 2018-06-26 | Electrolyte mixing device for lead-acid storage battery |
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| CN201810672841.5A CN109065831B (en) | 2018-06-26 | 2018-06-26 | Electrolyte mixing device for lead-acid storage battery |
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| CN109065831B true CN109065831B (en) | 2024-02-27 |
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| CN109616609A (en) * | 2019-02-01 | 2019-04-12 | 骆驼集团蓄电池研究院有限公司 | Electrolyte guiding device and battery |
| CN112103461B (en) * | 2020-10-23 | 2021-07-13 | 南京棠邑科创服务有限公司 | Storage battery protection device capable of preventing electrolyte from layering |
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