CN208904138U - A kind of lead-acid accumulator of asymmetric grid - Google Patents
A kind of lead-acid accumulator of asymmetric grid Download PDFInfo
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- CN208904138U CN208904138U CN201820766920.8U CN201820766920U CN208904138U CN 208904138 U CN208904138 U CN 208904138U CN 201820766920 U CN201820766920 U CN 201820766920U CN 208904138 U CN208904138 U CN 208904138U
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- grid
- lead
- rectangular panel
- acid accumulator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of lead-acid accumulators of asymmetric grid, including pole group and groove body；The beneficial effects of the utility model are, design is separately optimized in the positive and negative grid shape and size of lead-acid accumulator, improve the flexibility and diversity of grid design, four right angles of plate face are handled respectively, reduce the risk of pole group's short circuit, the low position of active material utilization is eliminated simultaneously, to increase the average utilization of entire plate active material, reduces the waste of grid lead amount and active material.It can directly be produced again using existing equipment simultaneously, by optimization design, adding a small amount of mold can directly promote in production, and investment risk is small, remarkable in economical benefits.
Description
Technical field
The utility model relates to lead-acid accumulator design and production technical field more particularly to a kind of asymmetric grids
Lead-acid accumulator.
Background technique
Lead-acid accumulator belongs to most conventional secondary chemical sources of electric energy, has cheap, output voltage stabilization, widely used
The advantages that.For lead-acid accumulator mainly by electrolyte, battery case and pole group's composition, the electrolyte of lead-acid accumulator are main sulfuric acid
Solution, wherein pole group is mainly made of positive plate, negative plate and partition, and the active material on positive/negative plate is in charge and discharge process
It converts, to complete the conversion of chemical energy and electric energy, partition mainly plays isolation positive/negative plate, provides the work of ion channel
With special AGM partition is mainly used for storing electrolyte, the gas passage as oxygen, while preventing active material from falling off.Mesh
Before, lead-acid accumulator mainly as the starting ignition power supply of internal combustion engine, the redundant electrical power of ups system, low-speed electronic vehicle power
Battery has a wide range of applications in national economy.
It in the process of manufacture of lead-acid accumulator, needs to fill lead plaster on grid, and becomes pole after curing and drying
Plate, therefore, pole plate are the cores of lead-acid accumulator.So the quality of screen and pole plate to the service performance of lead-acid accumulator and
Service life has direct and important influence.
The grid of lead-acid accumulator is roughly divided into gravitational casting grid. g., lead tape seine plate according to the difference of its manufacturing method
Four kinds of grid. g., lead tape punching grid and continuous roll casting grid.Gravitational casting grid is traditional grid production technology, and production efficiency is low,
Lead fume is seriously polluted in production process；Three kinds of grid production technologies can use automation equipment continuous production afterwards, and make
The grid weight difference of work is small, and high production efficiency is environmentally friendly.Therefore, tend to three kinds of technologies after using at present to come gradually
Instead of traditional casting grid.
Chinese patent CN202824572U disclose it is a kind of produce lead-acid accumulator seine or punched holes type grid. g., lead tape casting
Band machine, by casting thicker continuous lead embryo, then lead embryo prepares. g., lead tape through multiple cold rolling, which is used to prepare seine plate
Grid and punching grid.Chinese patent CN102738470A discloses a kind of seine grid manufacture craft, uses suitable. g., lead tape energy
Enough continuous seine grid bands of efficient preparation.Chinese patent CN103337636A discloses a kind of punching grid manufacture craft,
By punching reciprocal on grid, continuous punching grid band can be produced.Chinese patent CN103107310A discloses one
The kind continuous grid manufacture craft of drum die, carves grid dimpled grain on cylinder shape mold, and lead liquid stream enters dimpled grain, and rapid cooling is simultaneously
It is exported, can efficiently prepare continuous roll casting grid band.
But above-mentioned grid and plate designs is all made of conventional design method, the rectangular panel of positive/negative plate is
The active material utilization of the identical rectangle of outer dimension, the lead utilization rate and pole plate that lead to grid is all lower.Conventional rectangle
Grid is designed, since bottom active material is remote apart from tab, resistance is higher, and bottom active material charge and discharge are relatively difficult, electricity
Pond is being used to when later period failure, and active material overuses and fails in the middle part of battery pole plates rectangular panel, and pole plate lower part is left
The active material of right two right angles causes charging difficult and hardening is caused to be failed.
Utility model content
The purpose of this utility model: a kind of lead-acid accumulator of asymmetric grid, the active utilization rate of pole plate are provided
It is higher, and the active material utilization of pole plate different location is more balanced, and lead-acid accumulator is made to have better cycle life.
To achieve the goals above, the technical solution of the utility model is: a kind of lead-acid accumulator of asymmetric grid,
Including pole group and groove body；The groove body is rectangular case structure；Several rectangle baffles, and institute are provided in the groove body
The groove body inner cavity is separated into several independent single lattices by the rectangle baffle stated；Several single lattices are along the groove body length
Directional spreding；Pole group described in setting one in each single lattice, and pass through electrically conductive lead between the adjacent single lattice
Part connection；The pole group includes positive plate, negative plate and partition；The partition is cuboid structure, and is arranged
Between the positive plate and negative plate；The positive plate includes grid A, and the anode being coated on the grid A
Active material lead plaster；The negative plate includes grid B, and the negative electrode active material lead plaster being coated on the grid B；
The grid A is formed by rectangular panel A and positioned at the rectangle tab A of rectangular panel A upper side frame, and the two is integrated knot
Structure；The grid B is formed by rectangular panel B and positioned at the rectangle tab B of rectangular panel B upper side frame, and the two is integrated
Structure.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangle tab A and rectangle tab B
It is distributed by axial symmetry of the groove body length-wise axis.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the top surface rectangular panel A and the rectangular surfaces
The top surface plate B is coplanar.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangular panel A length and width is respectively W1
And H1；The rectangular panel B length and width is respectively W2 and H2；The H2/H1 is 50%-100%, the W2/
W1 is 50%-100%.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangular panel A is contacted with the tab A
Place uses arc transition；The rectangular panel B and the contact position tab B use arc transition；The rectangular panel A
Arc transition is used with two apex angle of rectangular panel B；The rectangular panel A and two base angle rectangular panel B uses chamfered.On
The lead-acid accumulator for the asymmetric grid stated, wherein it is thick that the rectangular panel A thickness is greater than the rectangle tab A
Degree；The rectangular panel B thickness is greater than the rectangle tab B thickness.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangular panel A thickness is greater than the rectangle
Tab A thickness；The rectangular panel B thickness is greater than the rectangle tab B thickness.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangle tab A size and the rectangle pole
Ear B size is identical.
In turn, the utility model provides a kind of lead-acid accumulator casting grid, grid shape meet it is any of the above described,
It is cast using book mould tool；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, wherein appoints above monolithic grid shape
Described in one, and seine equipment is extended using. g., lead tape and is prepared by joint-cutting pulling method；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, and wherein monolithic grid shape meets
Face is any described, and is prepared using the continuous punching apparatus of. g., lead tape；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, and wherein monolithic grid shape meets
Face is any described, and is prepared using roller-type mold and continuous casting equipment.
In conclusion the beneficial effects of the utility model are, positive and negative grid shape and the size difference of lead-acid accumulator
Optimization design improves the flexibility and diversity of grid design, is handled respectively four right angles of rectangular panel, reduces
The risk of pole group's short circuit, while the low position of active material utilization is eliminated, to increase entire plate active material
Average utilization reduces the waste of grid lead amount and active material.It can directly be produced again using existing equipment simultaneously,
By optimization design, adding a small amount of mold can directly promote in production, and investment risk is small, remarkable in economical benefits.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the lead-acid accumulator of asymmetric grid of the utility model.
Fig. 2 is the structural schematic diagram of the pole group of lead-acid accumulator of asymmetric grid of the utility model a kind of.
Fig. 3 is a kind of said positive-pole plate structure schematic diagram of the lead-acid accumulator of asymmetric grid of the utility model.
Fig. 4 is a kind of anode plate schematic diagram of the lead-acid accumulator of asymmetric grid of the utility model.
Fig. 5 is a kind of structural schematic diagram of the casting grid of lead-acid accumulator of asymmetric grid of the utility model.
Fig. 6 is a kind of structural schematic diagram of the seine grid band of lead-acid accumulator of asymmetric grid of the utility model.
Fig. 7 is a kind of punching of lead-acid accumulator of asymmetric grid of the utility model and the knot of roller casting grid band
Structure schematic diagram.
Fig. 8 is a kind of front view of the grid A and grid B of the lead-acid accumulator of asymmetric grid of the utility model.
Specific embodiment
The embodiments of the present invention that the following is further explained with reference to the attached drawings.
It refers to shown in attached drawing 1 to attached drawing 8, a kind of lead-acid accumulator of asymmetric grid, including pole group 1 and groove body 2；
The groove body 2 is rectangular case structure；Several rectangle baffles 201, and the rectangle gear are provided in the groove body 2
2 inner cavity of groove body is separated into several independent single lattices 202 by plate 201；Several single lattices 202 are along the groove body length
Directional spreding；Pole group 1 described in setting one in each single lattice 202, and pass through between the adjacent single lattice 202
The connection of electrically conductive lead part；The pole group 1 includes positive plate 3, negative plate 4 and partition 5；The partition 5 is cuboid structure,
And it is arranged between the positive plate 3 and negative plate 4；The positive plate 3 includes grid A301, and is coated on described
Grid A302 on positive active material lead plaster；The negative plate 4 includes grid B401, and is coated on the grid
Negative electrode active material lead plaster on B401；The grid A301 is by rectangular panel A302 and is located at the top rectangular panel A302
The rectangle tab A303 of frame is formed, and the two is structure as a whole；The grid B401 is by rectangular panel B402 and is located at square
The rectangle tab B403 of shape panel B402 upper side frame is formed, and the two is structure as a whole.
The rectangle tab A303 and the rectangle tab B303 are using 2 length-wise axis of groove body as axis pair
Claim distribution, on the one hand the two, which is staggered, prevents short circuit, is on the other hand also convenient for user and distinguishes 3 He of positive plate
Negative plate 4.
The top surface rectangular panel A302 is coplanar with the top surface rectangular panel B402, and the two is coplanar so that installing more
Add beautiful use.
The rectangular panel A302 length and width is respectively W1 and H1；The rectangular panel B402 length and width
Degree is respectively W2 and H2；The H2/H1 be 50%-100%, the W2/W1 be 50%-100%, therefore, it is described just
3 size of pole plate is greater than 4 size of negative plate.
The lead-acid accumulator of above-mentioned asymmetric grid, wherein the rectangular panel connects with the rectangle tab
Synapsis uses curve transition；
It is highly preferred that the rectangular panel and the rectangle tab contact position use oblique line transition；
Combined it is highly preferred that the rectangular panel is used with the rectangle tab contact position using curve and oblique line
It crosses.
The rectangular panel A301 and two apex angle of rectangular panel B401 uses curve transition；The rectangular panel A301
Chamfered is used with two base angle rectangular panel B302；
It is highly preferred that carrying out chamfered using circular curve；
It is highly preferred that carrying out chamfered using oblique line.
Four right angles of rectangular panel are handled respectively, the risk of 1 short circuit of pole group is reduced, removes simultaneously
Active material utilization low position, to increase the average utilization of entire plate active material, reduce grid lead amount and
The waste of active material.
5 planar dimension of partition is greater than the rectangular panel A302 size；5 planar dimension of partition is big
In the rectangular panel B402 size, it is ensured that the positive plate 3 and negative plate 4 can be isolated completely for the partition 5.
The rectangular panel A302 thickness is greater than the rectangle tab A303 thickness；The rectangular panel B402 is thick
Degree is greater than the rectangle tab B403 thickness, and the rectangle tab A303 and rectangle tab B403 primarily serve wiring work
With, therefore electric power load is smaller, so that size is smaller.
The rectangle tab A303 size is identical as the rectangle tab B403 size, so that electric current is by described
When rectangle tab A303 and rectangle tab B403, the two electric property having the same.
In turn, the utility model provides a kind of lead-acid accumulator casting grid, grid shape meet it is any of the above described,
It is cast using book mould tool；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, wherein appoints above monolithic grid shape
Described in one, and seine equipment is extended using. g., lead tape and is prepared by joint-cutting pulling method；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, and wherein monolithic grid shape meets
Face is any described, and is prepared using the continuous punching apparatus of. g., lead tape；
In turn, the utility model provides a kind of lead-acid accumulator continuous grid band, and wherein monolithic grid shape meets
Face is any described, and is prepared using roller-type mold and continuous casting equipment.
Embodiment 1:
A pair of of lead acid accumulator plate grid is designed, the rectangular panel 302 of the grid A301 is having a size of 150mm*110mm
(H1*W1), the rectangular panel 402 of the grid B401 is having a size of 130mm*110mm (H2*W2), the rectangle tab away from
It is 50mm with a distance from the right side of grid, the grid A301 and grid B401 are casting grid；
One-step casting goes out the biplate grid that bottom connects together, and rectangle tab and rectangular panel junction are all made of circular arc
Reason, circular arc radian are 30 °, arc radius 3.5mm.Two apex angles of the grid A301 use fillet, and radian is 90 °,
Arc radius is 2.5mm, and two apex angles of the grid B401 are handled using cutting, two bottoms of the grid A301
Angle is handled using cutting, and the base angle of the grid B401 is not handled；
Positive lead plaster is filled on the grid A301, negative lead plaster is filled on the grid B401, and polar plate solidification drying is
Respectively become the positive plate 3 and negative plate 4；
The positive plate 3, negative plate 4 and partition 5 are carried out to stack the composition pole group 1, the pole group 1 is put
Enter the groove body 2, the positive plate 3 and the rectangle tab of negative plate 4 in the pole group 1 first link together, described in difference
Pole group 1 between reuse lead part connection, add electrolyte charging chemical conversion be lead-acid accumulator.
Embodiment 2:
A pair of of lead acid accumulator plate grid is designed, the rectangular panel 302 of the grid A301 is having a size of 140mm*110mm
(H1*W1), the rectangular panel 402 of the grid B401 is having a size of 130mm*100mm (H2*W2), and the tab is apart from plate
Distance on the right side of grid is 15mm, and the grid A301 and grid B401 are seine grid；
According to monolithic grid size adjusting seine equipment, continuous grid band is prepared, is referred to as grid band A, grid
Band B, the tab and rectangular panel junction are all made of circular arc processing, and circular arc radian is 60 °, arc radius 2.5mm, institute
Two apex angles of the grid A301 and grid B401 that state are handled using cutting；
Positive lead plaster is filled on continuous grid band A, negative lead plaster is filled in continuous grid band B, then according to grid ruler
Grid band is cut in very little design, formed monolithic pole plate, while the base angle of pole plate be all cut into it is arc-shaped, radian be 90 °, radius
5mm, polar plate solidification is dry to respectively become the positive plate 3 and negative plate 4；
The positive plate 3, negative plate 4 and partition 5 are carried out to stack a group poling group 1, the pole group 1 is put into described
Groove body 2, the positive plate 3 in the described pole group 1 first links together with 4 tab of negative plate, makes again between pole group 1 described in difference
It is connected with lead part, adding electrolyte charging chemical conversion is lead-acid accumulator.
Embodiment 3:
A pair of of lead acid accumulator plate grid is designed, the rectangular panel 302 of the grid A301 is having a size of 120mm*110mm
(H1*W1), the rectangular panel 402 of the grid B401 is having a size of 100mm*100mm (H2*W2), and tab is on the right side of grid
Distance be 14mm, the grid A301 be punching grid, the grid B401 be roller continuous grid casting；
Continuous punching grid band A is prepared using. g., lead tape and punching apparatus, tab is all made of with rectangular panel junction
Circular arc processing, circular arc radian are 90 °, arc radius 1.5mm.Two apex angles of the grid A301 use fillet, radian
It is 90 °, two base angles of arc radius 3.5mm, the grid A301 are handled using cutting.Use roller continuous casting installation for casting
Continuous grid band B is prepared, tab and rectangular panel junction are all made of circular arc processing, and circular arc radian is 90 °, circular arc half
Diameter is 1.5mm, and two apex angles of the grid B401 use fillet, and radian is 90 °, arc radius 3.5mm, the plate
Two base angles of grid B401 are handled using cutting；
Positive lead plaster is filled on grid band A, fills negative lead plaster on grid band B, continuous grid band is cut into monolithic pole plate,
Polar plate solidification is dry to respectively become the positive plate 3 and negative plate 4；
The positive plate 3, negative plate 4 and partition 5 are carried out to stack a group poling group 1, the pole group 1 is put into described
Groove body 2, the positive plate 3 in the described pole group 1 first links together with 4 tab of negative plate, makes again between pole group 1 described in difference
It is connected with lead part, adding electrolyte charging chemical conversion is lead-acid accumulator.
Embodiment 4:
A pair of of lead acid accumulator plate grid is designed, the rectangular panel 302 of the grid A301 is having a size of 150mm*110mm
(H1*W1), the rectangular panel 402 of the grid B401 is having a size of 130mm*110mm (H2*W2), and tab is on the right side of grid
Distance be 25mm, the grid A301 be conventional cast grid, the grid B401 be seine grid；
One-step casting goes out the biplate grid that bottom connects together, and the tab of grid and rectangular panel junction are all made of circular arc
Processing, circular arc radian are 60 °, and two apex angles of arc radius 2mm, the grid A301 are used to be handled using circular arc, circle
Arc radian is 90 °, and the base angle of arc radius 2.5mm, the grid A301 are handled using cutting；
According to monolithic grid size adjusting seine equipment, continuous grid band is prepared, is referred to as grid band B, tab
It being handled with rectangular panel junction using circular arc, circular arc radian is 60 °, arc radius 2.5mm, the two of the grid B401
A apex angle is handled using cutting；
Positive lead plaster is filled on the grid A301, fills negative lead plaster on the grid band B401, it is then clipped again
As monolithic pole plate, polar plate solidification is dry to respectively become the positive plate 3 and negative plate 4；
The positive plate 3, negative plate 4 and partition 5 are carried out to stack the composition pole group 1, then, by the pole
Group 1 is put into the groove body 2, and the positive plate 3 in the pole group 1 first links together with 4 tab of negative plate, described in difference
The connection of lead part is reused between pole group 1, adding electrolyte charging chemical conversion is lead-acid accumulator.
In conclusion the beneficial effects of the utility model are, positive and negative grid shape and the size difference of lead-acid accumulator
Optimization design improves the flexibility and diversity of grid design, is handled respectively four right angles of rectangular panel, reduces
The risk of pole group's short circuit, while the low position of active material utilization is eliminated, to increase entire plate active material
Average utilization reduces the waste of grid lead amount and active material.It can directly be produced again using existing equipment simultaneously,
By optimization design, adding a small amount of mold can directly promote in production, and investment risk is small, remarkable in economical benefits.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Any equivalent structural transformation made using the contents of the description of this utility model is directly or indirectly related with other are attached to
The technical field of product, is also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of lead-acid accumulator of asymmetric grid, it is characterised in that: including pole group and groove body；The groove body is rectangle
Shell structure；Several rectangle baffles are provided in the groove body, and the rectangle baffle divides the groove body inner cavity
It is divided into several independent single lattices；Several single lattices are distributed along the groove body length direction；Setting in each single lattice
The group of pole described in one, and connected between the adjacent single lattice by electrically conductive lead part；The described pole group include positive plate,
Negative plate and partition；The partition is cuboid structure, and is arranged between the positive plate and negative plate；Described
Positive plate includes grid A, and the positive active material lead plaster being coated on the grid A；The negative plate includes plate
Grid B, and the negative electrode active material lead plaster being coated on the grid B；The grid A is by rectangular panel A and is located at square
The rectangle tab A of shape panel A upper side frame is formed, and the two is structure as a whole；The grid B by rectangular panel B and is located at
The rectangle tab B of rectangular panel B upper side frame is formed, and the two is structure as a whole, the rectangle tab A and the rectangle
Tab B is distributed by axial symmetry of the groove body length-wise axis.
2. the lead-acid accumulator of asymmetric grid according to claim 1, it is characterised in that: the rectangular panel A
Top surface is coplanar with the top surface rectangular panel B.
3. the lead-acid accumulator of asymmetric grid according to claim 1, it is characterised in that: the rectangular panel A
Length and width is respectively W1 and H1；The rectangular panel B length and width is respectively W2 and H2；The H2/H1 is
50%-100%, the W2/W1 are 50%-100%.
4. the lead-acid accumulator of asymmetric grid according to claim 1, it is characterised in that: the rectangular panel A
Arc transition is used with the contact position tab A；The rectangular panel B and the contact position tab B use circular arc mistake
It crosses；The rectangular panel A and two apex angle of rectangular panel B uses arc transition；The rectangular panel A and rectangular panel B two
Base angle uses chamfered.
5. the lead-acid accumulator of asymmetric grid according to claim 1, it is characterised in that: the rectangular panel A
Thickness is greater than the rectangle tab A thickness；The rectangular panel B thickness is greater than the rectangle tab B thickness.
6. the lead-acid accumulator of asymmetric grid according to claim 1, it is characterised in that: the rectangle tab A
Size is identical as the rectangle tab B size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820766920.8U CN208904138U (en) | 2018-05-22 | 2018-05-22 | A kind of lead-acid accumulator of asymmetric grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820766920.8U CN208904138U (en) | 2018-05-22 | 2018-05-22 | A kind of lead-acid accumulator of asymmetric grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208904138U true CN208904138U (en) | 2019-05-24 |
Family
ID=66566195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820766920.8U Expired - Fee Related CN208904138U (en) | 2018-05-22 | 2018-05-22 | A kind of lead-acid accumulator of asymmetric grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208904138U (en) |
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2018
- 2018-05-22 CN CN201820766920.8U patent/CN208904138U/en not_active Expired - Fee Related
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