CN219873598U - Hollow lead-acid storage battery grid - Google Patents
Hollow lead-acid storage battery grid Download PDFInfo
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- CN219873598U CN219873598U CN202320993208.2U CN202320993208U CN219873598U CN 219873598 U CN219873598 U CN 219873598U CN 202320993208 U CN202320993208 U CN 202320993208U CN 219873598 U CN219873598 U CN 219873598U
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- grid
- frame
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- half grid
- hollow structure
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- 239000002253 acid Substances 0.000 title claims abstract description 37
- 238000003860 storage Methods 0.000 title claims abstract description 26
- 239000013543 active substance Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 239000011149 active material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000001819 mass spectrum Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910000882 Ca alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a hollow lead-acid storage battery grid, belongs to the technical field of lead-acid storage batteries, and solves the problems of capacity attenuation cycle life reduction, high cost, complex manufacturing, low specific energy and the like caused by easy falling of active substances on a light grid in the prior art. The utility model provides a hollow structure lead acid battery grid, includes first half grid and the second half grid of relative setting, first half grid with the second half grid all includes frame and utmost point ear, the frame includes frame, lower frame, left side frame and right frame, be provided with the rib in the frame, first half grid with the second half grid lock forms hollow structure. According to the utility model, through the combination of the first half grid and the second half grid, a hollow cavity is formed in the grid, so that the use amount of lead is reduced, the production cost is saved, the appearance shape and the size of the ribs are not changed, the attachment area of active substances is not reduced, and the cycle life of the battery can be ensured.
Description
Technical Field
The utility model relates to the technical field of lead-acid storage batteries, in particular to a hollow lead-acid storage battery grid.
Background
Lead-acid batteries have the advantages of unique safety, low cost and the like, and are still active up to the present time and still continuously developed and applied. Lead-acid batteries have been greatly improved in terms of product types and varieties, product electrical properties and the like, and the lead-acid batteries play an indispensable important role in various economic fields of traffic, communication, electric power, military, navigation and aviation at present.
One of the key factors limiting the development of lead-acid batteries is that the specific energy is relatively low, typically 30-45 wh/kg. In recent years, along with the implementation of a new national standard of an electric booster vehicle, higher requirements are put forward on the use of a lead-acid storage battery due to the control requirement of the whole vehicle weight, and under the condition of ensuring the original battery performance, the improvement of the specific energy of the battery becomes a key for the sustainable development of the lead-acid storage battery. Therefore, a new solution is needed to solve the above technical problems.
At present, lead-acid storage battery grid research is mainly developed around three directions, (1) Pb-Sb and Pb-Ca alloys are still important research contents in the future, and Pb-based alloys containing rare metals are also the main stream of development;
(2) The lightweight development of the grid is focused on the improvement of electrochemical performance and mass specific energy;
(3) The development of the bipolar plate grid reduces the number of the grids as much as possible, and reduces the internal resistance of the battery and the high-current charge and discharge performance.
In the aspect of grid weight reduction, the existing method basically reduces the thickness of ribs inside the grid. However, the reduction in thickness reduces the active material adhesion area, and the active material is more likely to fall off, resulting in a reduction in the capacity fade cycle life. In view of this, a novel structure is required to solve this problem.
Disclosure of Invention
In view of the above analysis, the present utility model aims to provide a hollow lead-acid storage battery grid, which is used for solving the problems of capacity attenuation cycle life reduction, high cost, complex manufacturing, low specific energy and the like caused by easy falling of active substances on a lightweight grid in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a hollow structure lead acid battery grid, includes first half grid and the second half grid of relative setting, first half grid with the second half grid all includes frame and utmost point ear, the frame includes frame, lower frame, left side frame and right frame, be provided with the rib in the frame, first half grid with the second half grid lock forms hollow structure.
Further, one side of any two ribs which are oppositely arranged in the first half grid and the second half grid is provided with a first groove.
Further, the shape of the first groove is the same as the external shape of the rib.
Further, the cross section of the rib is V-shaped, semicircular, semi-elliptic or rectangular.
Further, a second groove is formed in one side, which is arranged oppositely, of any two frames which are arranged oppositely in the first half grid and the second half grid.
Further, the shape of the second groove is the same as the external shape of the frame.
Further, one side of two lugs arranged oppositely in the first half grid and the second half grid is provided with a third groove.
Further, the shape of the third groove is the same as the external shape of the tab.
Further, the first half grid and the second half grid are buckled in a sealing mode.
Further, the ribs comprise a plurality of transverse ribs distributed transversely along the plate surface and a plurality of longitudinal ribs distributed longitudinally along the plate surface.
Compared with the prior art, the utility model has at least one of the following beneficial effects:
(1) According to the utility model, through the combination of the first half grid and the second half grid, a hollow cavity is formed in the grid, so that the use amount of lead is reduced, the production cost of the storage battery is saved, meanwhile, the appearance shape and the size of ribs are not changed, the attachment area of active substances is not reduced, the cycle life of the battery can be ensured, and the first half grid and the second half grid are respectively prepared and then are sealed and buckled, so that the preparation of the hollow plate grid is simpler, and the industrial production is facilitated;
(2) The grid of the utility model adopts a hollow structure, thereby achieving the purpose of weight reduction, reducing the weight of the whole lead-acid storage battery, improving the specific energy of the lead-acid storage battery and expanding the application range of products.
In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.
FIG. 1 is a schematic view of a first half grid structure according to the present utility model;
fig. 2 is a schematic diagram of a second half grid structure provided by the utility model;
FIG. 3 is a schematic diagram of a grid structure of a lead-acid storage battery with a hollow structure;
fig. 4 is a partial cross-sectional view of a hollow lead-acid battery grid provided by the utility model.
Reference numerals:
1-tab, 11-third groove, 21-upper frame, 22-lower frame, 23-left frame, 24-right frame, 25-second groove, 31-transverse rib, 32-longitudinal rib, 33-first groove, 4-first half grid and 5-second half grid.
Detailed Description
The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.
1-4, a lead-acid storage battery grid with a hollow structure is disclosed, which comprises a first half grid 4 and a second half grid 5 which are oppositely arranged, wherein the first half grid 4 and the second half grid 5 both comprise a frame and a tab 1, the frame comprises an upper frame 21, a lower frame 22, a left frame 23 and a right frame 24, ribs are arranged in the frame, and the first half grid 4 and the second half grid 5 are buckled to form a hollow structure.
Compared with the prior art, the hollow cavity is formed in the grid through the combination of the first half grid 4 and the second half grid 5, as shown in fig. 4, so that the use amount of lead is reduced, the production cost of the storage battery is saved, the appearance and the size of the ribs are not changed, the attachment area of active substances is not reduced, and the cycle life of the battery can be ensured.
The specific energy of the current lead-acid storage battery is generally 30-45 wh/kg. In recent years, with the implementation of a new national standard of an electric booster vehicle, higher requirements are put on the use of a lead-acid storage battery due to the control requirements of the whole vehicle weight. The hollow lead-acid storage battery grid can improve the specific energy of the lead-acid storage battery on the premise of ensuring that active substances do not fall off in the whole cycle of circulation. Therefore, the grid of the utility model not only can guarantee the cycle life, but also can achieve the purposes of reducing weight, reducing cost and improving the specific energy of the storage battery.
Specifically, the first grooves 33 are formed on one side of any two ribs of the first half grid 4 and the second half grid 5 which are oppositely arranged.
Specifically, the shape of the first groove 33 is the same as the external shape of the rib.
Specifically, the cross section of the rib is V-shaped, semicircular, semi-elliptic or rectangular.
Specifically, the second grooves 25 are formed on one side of any two opposite side frames of the first half grid 4 and the second half grid 5.
Specifically, the shape of the second groove 25 is the same as the outer shape of the rim.
In a preferred embodiment, the upper frame 21, the lower frame 22, the left frame 23 and the right frame 24 are each provided with a second groove 25.
Specifically, a third groove 11 is formed on one side of the two opposite lugs 1 of the first half grid 4 and the second half grid 5.
Specifically, the shape of the third groove 11 is the same as the external shape of the tab 1.
Specifically, the first half grid 4 and the second half grid 5 are buckled in a sealing way.
The shape of the first groove 33 is the same as the external shape of the rib, the shape of the second groove 25 is the same as the external shape of the frame, and the shape of the third groove 11 is the same as the external shape of the tab 1, so that the weight of the grid can be reduced to the maximum extent.
In a preferred embodiment, after the first half grid 4 and the second half grid 5 are correspondingly buckled, the first half grid and the second half grid are fused into a whole on an ultrasonic welding table.
The ultrasonic welding step is preferably performed in a helium atmosphere of 1.05bar to 1.1 bar.
In a preferred scheme, helium mass spectrum leakage detection is carried out on the welded grid, and the leakage rate is controlled to be less than 5 multiplied by 10 -9 Pa·m 3 /s。
The sealing engagement of the present utility model is not limited to the above-described ultrasonic welding method, but may be other sealing methods, such as sealing rings and other prior art forms. The sealing mode is adopted to prevent acid liquor from penetrating.
Specifically, as shown in fig. 1 and 2, the ribs include a plurality of transverse ribs 31 distributed transversely along the plate surface and a plurality of longitudinal ribs 32 distributed longitudinally along the plate surface.
In a preferred embodiment, the first grooves 33 on the transverse ribs 31 are the same as the outer shape of the transverse ribs 31, and the first grooves 33 on the longitudinal ribs 32 are the same as the outer shape of the longitudinal ribs 32.
The grid of the utility model is applied to a negative grid, because the positive grid loses electrons during charging, so that the positive grid is more easily corroded, and the inventor obtains a large number of analysis results of the failed storage battery, so that the positive grid is easily corroded and active substances are easily separated. The grid of the utility model has a hollow structure, is easy to corrode as a positive grid, and is mainly applied to a negative grid.
According to the preparation of the hollow-core lead-acid storage battery grid, the first half grid 4 and the second half grid 5 are respectively prepared, then the first half grid 4 and the second half grid 5 are combined, and are sealed and buckled through ultrasonic welding, so that the working procedures of processing can be reduced, the operation is easy, the method is simple, and the industrial production can be realized.
The technical scheme of the utility model is explained below by combining specific embodiments.
Example 1
As shown in fig. 1-4, the grid of this embodiment is illustrated by taking a rectangle as an example, specifically, a lead-acid battery grid with a hollow structure includes a first half grid 4 and a second half grid 5 that are oppositely disposed, the first half grid 4 and the second half grid 5 include a frame and a tab 1, the frame includes an upper frame 21, a lower frame 22, a left frame 23 and a right frame 24, ribs are disposed in the frame, and the first half grid 4 and the second half grid 5 are buckled to form a hollow structure.
Illustratively, a first groove 33 is formed on one side, which is opposite to one side, of any two ribs which are opposite to one another, of the first half grid 4 and the second half grid 5, and the cross section of each rib is in a V-shaped structure.
Illustratively, the second grooves 25 are disposed on opposite sides of any two opposite side frames of the first half grid 4 and the second half grid 5, and specifically, the second grooves 25 are disposed on the upper side frame 21, the lower side frame 22, the left side frame 23 and the right side frame 24.
Illustratively, a third groove 11 is formed on one side of the two opposite lugs 1 of the first half grid 4 and the second half grid 5.
Specifically, the ribs include a plurality of transverse ribs 31 distributed transversely along the plate surface and a plurality of longitudinal ribs 32 distributed longitudinally along the plate surface.
Specifically, the first half grid 4 and the second half grid 5 are sealed and buckled by adopting ultrasonic welding, the welding is carried out in a helium environment of 1.05bar to 1.1bar in an ultrasonic welding procedure, the welded grids are subjected to helium mass spectrum leak detection, and the leak rate is controlled to be less than 5 multiplied by 10 -9 Pa·m 3 /s。
Example 2
A lead-acid battery grid with a hollow structure of this embodiment is the same as embodiment 1, except that the shape of the first groove 33 is the same as the external shape of the rib; the shape of the second groove 25 is the same as the outer shape of the rim; the shape of the third groove 11 is the same as the external shape of the tab 1.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (10)
1. The utility model provides a hollow structure lead acid battery grid, its characterized in that, including first half grid and the second half grid of relative setting, first half grid with second half grid all includes frame and tab, the frame includes frame, lower frame, left side frame and right frame, be provided with the rib in the frame, first half grid with second half grid lock forms hollow structure.
2. The grid of a lead-acid battery of hollow structure according to claim 1, wherein the first grooves are formed in one side of any two oppositely arranged ribs of the first half grid and the second half grid.
3. The grid of claim 2, wherein the first channel has the same shape as the external shape of the ribs.
4. A hollow-structured lead-acid battery grid according to claim 3, wherein the cross section of the ribs is V-shaped, semicircular, semi-elliptical or rectangular.
5. The hollow-core lead-acid storage battery grid according to claim 1, wherein the second grooves are formed in one side of any two opposite side frames of the first half grid and the second half grid.
6. The grid of a lead acid battery of hollow structure of claim 5, wherein the second channel has the same shape as the exterior shape of the frame.
7. The lead-acid storage battery grid with the hollow structure according to claim 1, wherein a third groove is formed in one side, which is opposite to one side, of two lugs which are opposite to one another in the first half grid and the second half grid.
8. The grid of claim 7, wherein the third groove has the same shape as the outer shape of the tab.
9. The lead-acid battery grid of hollow structure according to any one of claims 1-8, wherein the first half grid and the second half grid are sealed and fastened.
10. The grid of lead-acid storage batteries of hollow structure according to any one of claims 1-8 wherein the ribs comprise a plurality of transverse ribs distributed transversely along the plate face and a plurality of longitudinal ribs distributed longitudinally along the plate face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993208.2U CN219873598U (en) | 2023-04-27 | 2023-04-27 | Hollow lead-acid storage battery grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993208.2U CN219873598U (en) | 2023-04-27 | 2023-04-27 | Hollow lead-acid storage battery grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219873598U true CN219873598U (en) | 2023-10-20 |
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ID=88336949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320993208.2U Active CN219873598U (en) | 2023-04-27 | 2023-04-27 | Hollow lead-acid storage battery grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219873598U (en) |
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2023
- 2023-04-27 CN CN202320993208.2U patent/CN219873598U/en active Active
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