CN220774564U - Immersed cooling energy storage battery module - Google Patents
Immersed cooling energy storage battery module Download PDFInfo
- Publication number
- CN220774564U CN220774564U CN202322423497.5U CN202322423497U CN220774564U CN 220774564 U CN220774564 U CN 220774564U CN 202322423497 U CN202322423497 U CN 202322423497U CN 220774564 U CN220774564 U CN 220774564U
- Authority
- CN
- China
- Prior art keywords
- flange
- bottom plate
- energy storage
- end plate
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 238000004146 energy storage Methods 0.000 title claims abstract description 27
- 238000005452 bending Methods 0.000 claims abstract description 8
- 239000008358 core component Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 abstract description 7
- 239000002390 adhesive tape Substances 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000009421 internal insulation Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides an immersed cooling energy storage battery module, and relates to the field of energy storage batteries. The battery module comprises a first battery cell assembly and a second battery cell assembly, and a connecting piece is connected between the first battery cell assembly and the second battery cell assembly; the first battery cell assembly comprises a bottom plate, an end plate, binding adhesive tapes and a plurality of battery cells, wherein the battery cells are arranged on the upper side surface of the bottom plate, and the binding adhesive tapes are connected to the outer parts of the battery cells to form a battery cell module; the two end plates are vertically fixed on opposite side edges of the bottom plate and are respectively in stop fit with the outer side surfaces of the battery cells; the end plate is made by bending, the upper part of the end plate is provided with an upward flanging, and the upward flanging is provided with a hoisting hole. Through bottom plate, two end plates and binding tape, carry out reliable fixed constraint to the electric core, simple structure and fixed effectual can be applied to in the immersion cooling battery package, makes electric core and battery package internal insulation coolant fully contact, has improved the temperature homogeneity of heat dispersion and electric core.
Description
Technical Field
The utility model relates to the technical field of energy storage batteries, in particular to an immersed cooling energy storage battery module.
Background
The battery module is a modularized battery pack formed by connecting a plurality of battery cells in series and parallel, and assembling the battery module with parts such as a frame structure, a battery connecting system, an insulating assembly and the like. In the assembly process, components such as end plates, side plates, screws and the like are utilized to support, fix and protect the battery cell.
For example, chinese patent publication No. CN206098608U and publication date No. 2017.04.12 disclose a parallel integrated power battery module based on liquid cooling, which specifically includes a bottom plate, a side plate, a battery, an upper cover plate, a protective cover, a pull rod, an aluminum pole piece, a support plate, and a liquid cooling plate; each battery module comprises a side plate at two ends, wherein the side plate comprises a side plate main body, an upper protruding end and a lower protruding end, two through holes are formed in two sides of the side plate main body along the vertical direction, and the through holes are used for fixedly connecting a pull rod; the upper cover plate is symmetrically provided with two pull rod fixing holes, the pull rod fixing holes are in butt joint with the through holes, and the pull rods sequentially penetrate through the pull rod fixing holes, the through holes and the vertical mounting holes to connect the upper cover plate, the side plates and the bottom plate together.
The existing power battery module adopts the design of a bottom plate, side plates, a battery, an upper cover plate and a pull rod, so that the assembly of the battery module is complex, and the assembly and disassembly operations are inconvenient; moreover, the battery is only cooled by contacting the edge of the battery with the liquid cooling plate, so that the heat dissipation contact surface of the battery core is small, and the heat dissipation performance and the uniformity of the temperature of the battery core cannot be ensured.
Disclosure of Invention
In order to solve the above problems, an object of the present utility model is to provide an immersed cooling energy storage battery module, so as to solve the problems of complex assembly and inconvenient assembly and disassembly operations of the existing battery module; moreover, the battery is only cooled by contacting the edge of the battery with the liquid cooling plate, so that the radiating contact surface of the battery core is small, and the radiating performance and the temperature uniformity of the battery core can not be guaranteed.
The technical scheme of the immersed cooling energy storage battery module is as follows:
the immersed cooling energy storage battery module comprises a first electric core component and a second electric core component, wherein a connecting piece is connected between the first electric core component and the second electric core component, and the first electric core component and the second electric core component have the same structure;
the first battery cell assembly comprises a bottom plate, an end plate, binding tapes and a plurality of battery cells, wherein the battery cells are arranged on the upper side surface of the bottom plate, and the binding tapes are connected to the outer parts of the battery cells in a winding manner to form a battery cell module;
the two end plates are vertically fixed on opposite side edges of the bottom plate and are respectively in stop fit with the outer side faces of the battery cells;
the end plate is made by bending, an upper flanging is arranged on the upper portion of the end plate, a lifting hole is formed in the upper flanging, a lower flanging is arranged on the lower portion of the end plate, and the lower flanging is fixedly connected with the edge of the bottom plate.
Further, the profile shape of bottom plate is the rectangle, one side edge of bottom plate is equipped with first flange, the opposite side edge of bottom plate is equipped with the second flange, first flange with the relative interval arrangement of second flange, first flange the second flange all protrusion in the upper surface setting of bottom plate.
Further, the first flange and the second flange are right-angle flanges, the first flange comprises a vertical side and a horizontal side which are fixedly connected, the vertical side is flush with the side face of the end plate, and the horizontal side is in fit connection with the downward flanging of the end plate.
Further, the shape outline of the end plate is rectangular, the upper flanging and the lower flanging are both positioned at the outer side of the end plate, and the inner side surface of the end plate is in stop fit with the outer side surface of the battery cell.
Further, vertical flanging is further arranged on two sides of the end plate respectively, and the upper flanging, the lower flanging and the two vertical flanging enclose a rectangular frame.
Further, the lower flanging is provided with a first perforation, the first flange and the second flange are provided with a second perforation, and fastening screws are installed in the first perforation and the second perforation in a penetrating manner.
Further, the first perforation and the second perforation are waist-shaped holes, at least two first perforations are arranged in the middle of the downward flanging, and at least two second perforations are arranged in the middle of the first flange or the second flange.
Further, the hoisting holes are at least two, the at least two hoisting holes are located at the middle position of the upper flanging, and nuts are fixed on the lower sides of the hoisting holes.
Further, a heat insulation pad is further arranged between two adjacent electric cores, and the heat insulation pads are respectively attached to the corresponding electric cores.
Further, the upper flange, the lower flange, the first flange and the second flange are further provided with fixing holes which correspond to each other up and down, long bolts are installed in the fixing holes, and the long bolts are used for being connected with the battery pack shell.
The beneficial effects are that: this submergence formula cooling energy storage battery module has adopted the design form of first electric core subassembly, second electric core subassembly and connecting piece, with whole battery module split two electric core subassemblies, with first electric core subassembly and second electric core subassembly integration into a big module through the connecting piece, first electric core subassembly, second electric core subassembly are as independent little module, weight is lighter relatively, and is small in size, can hoist fast dismouting and transfer through the lifting hole, easily moves installation and removal electric core subassembly, has reduced the operation degree of difficulty when the module is installed and is dismantled, has improved the efficiency of installation work.
The first battery cell assembly and the second battery cell assembly are identical in structure, and take the first battery cell assembly as an example, the battery cell assembly comprises a bottom plate, end plates, binding adhesive tapes and a plurality of battery cells, the battery cells are arranged on the upper side face of the bottom plate, the two end plates are vertically fixed on the opposite side edges of the bottom plate, and the battery cells are laterally blocked through the two end plates. And bind the sticky tape and twine a plurality of electric cores and fix together, through bottom plate, two end plates and bind the sticky tape, carry out reliable fixed constraint to the electric core, simple structure and fixed effectual, can be applied to in the immersion cooling battery package, saved upper cover insulation board and module curb plate, reduced unnecessary spare part, make electric core and battery package internal insulation coolant fully contact, improved the temperature homogeneity of heat dispersion and electric core.
In addition, the end plate is made by bending, compared with the process of stamping to make the plate, the production cost of the end plate is reduced, the lifting hole is formed in the upper flanging of the end plate, the lifting ring can be screwed in the lifting hole, an installer can lift the first battery cell assembly or the second battery cell assembly, the battery cell assembly is placed in the shell, and the lifting holes are formed in the end plates on two sides, so that the balance is better during installation.
Drawings
Fig. 1 is a schematic front view of an immersion cooling energy storage battery module according to an embodiment of the present utility model;
FIG. 2 is a schematic top view of an immersion cooling energy storage battery module according to an embodiment of the present utility model;
fig. 3 is a schematic front view of a first cell assembly in an embodiment of an immersion cooling energy storage battery module according to the present utility model;
FIG. 4 is a schematic cross-sectional view at A-A of FIG. 3;
fig. 5 is a schematic front view of an end plate in an embodiment of an immersion cooling energy storage battery module according to the present utility model;
fig. 6 is a schematic top view of the upturned edge of fig. 5.
In the figure: 1-first cell assembly, 10-cell, 11-bottom plate, 111-first flange, 112-second flange, 12-end plate, 120-vertical turn-ups, 121-up turn-ups, 122-down turn-ups, 123-lifting holes, 124-fastening screws, 125-fixing holes, 126-bracket mounting holes, 13-binding adhesive tape, 14-heat insulation pad, 2-second cell assembly and 3-connecting piece.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the embodiment 1 of the submerged cooling energy storage battery module, as shown in fig. 1 to 6, the submerged cooling energy storage battery module comprises a first electric core component 1 and a second electric core component 2, a connecting piece 3 is connected between the first electric core component 1 and the second electric core component 2, and the first electric core component 1 and the second electric core component 2 have the same structure; the first battery cell assembly 1 comprises a bottom plate 11, an end plate 12, binding tapes 13 and a plurality of battery cells 10, wherein the battery cells 10 are arranged on the upper side surface of the bottom plate 11, and the binding tapes 13 are connected to the outer parts of the battery cells 10 in a winding mode to form a battery cell module.
The two end plates 12 are arranged, the two end plates 12 are vertically fixed on opposite side edges of the bottom plate 11, and the two end plates 12 are respectively in stop fit with the outer side surfaces of the battery cells 10; the end plate 12 is made by bending, an upper flange 121 is arranged at the upper part of the end plate 12, a lifting hole 123 is formed in the upper flange 121, a lower flange 122 is arranged at the lower part of the end plate 12, and the lower flange 122 is fixedly connected with the edge of the bottom plate 11.
This submergence formula cooling energy storage battery module has adopted the design form of first electric core subassembly 1, second electric core subassembly 2 and connecting piece 3, split into two electric core subassemblies with whole battery module, with first electric core subassembly 1 and the integration of second electric core subassembly 2 into a big module through connecting piece 3, first electric core subassembly 1, second electric core subassembly 2 regard as independent little module, weight is lighter relatively, the size is little, can hoist up dismouting and transfer fast through lifting hole 123, easily move installation and removal electric core subassembly, the operation degree of difficulty when having reduced the module installation dismantlement, the efficiency of installation work has been improved.
The first battery cell assembly 1 and the second battery cell assembly 2 have the same structure, and take the first battery cell assembly 1 as an example, the battery cell assembly comprises a bottom plate 11, an end plate 12, a binding tape 13 and a plurality of battery cells 10, the battery cells 10 are arranged on the upper side surface of the bottom plate 11, the two end plates 12 are vertically fixed on the opposite side edges of the bottom plate 11, and the two end plates 12 play a role in lateral blocking on the battery cells 10. And bind sticky tape 13 and twine and fix a plurality of electric core 10 together, through bottom plate 11, two end plates 12 and bind sticky tape 13, carry out reliable fixed constraint to electric core 10, simple structure and fixed effectual, can be applied to immersion cooling battery package, saved upper cover insulation board and module curb plate, reduced unnecessary spare part, make electric core 10 and battery package internal insulation coolant fully contact, improved the temperature homogeneity of heat dispersion and electric core 10.
In addition, the end plate 12 is made by bending, compared with the process of stamping to make a plate, the production cost of the end plate 12 is reduced, the lifting hole 123 is formed in the upper flanging 121 of the end plate 12, the lifting ring can be screwed in the lifting hole 123, an installer can lift the first battery cell assembly 1 or the second battery cell assembly 2, and the battery cell assembly is placed in the shell, and the lifting holes 123 are formed in the end plates 12 on two sides, so that the balance is better during installation.
In this embodiment, the outline shape of the bottom plate 11 is rectangular, one side edge of the bottom plate 11 is provided with a first flange 111, the other side edge of the bottom plate 11 is provided with a second flange 112, the first flange 111 and the second flange 112 are oppositely arranged at intervals, and the first flange 111 and the second flange 112 are both protruded from the upper surface of the bottom plate 11.
Specifically, the first flange 111 and the second flange 112 are right-angle flanges, the first flange 111 includes a vertical side and a horizontal side that are fixedly connected, the vertical side of the first flange 111 and the vertical side of the second flange 112 are flush with the side surface of the end plate 12, and the horizontal side of the first flange 111 and the horizontal side of the second flange 112 are in abutting connection with the turndown edge 122 of the end plate 12.
A first flange 111 is arranged at one side edge of the bottom plate 11, a second flange 112 is arranged at the other side edge of the bottom plate 11, the first flange 111 and the second flange 112 are higher than the upper surface of the bottom plate 11, a clamping groove area for placing the power supply core 10 is formed on the bottom plate 11, the first flange 111 and the second flange 112 play a role in stopping and restraining the power supply core 10, and the end plate 12 can be accurately connected with the corresponding flanges.
As a further preferred embodiment, the shape profile of the end plate 12 is rectangular, and the upper flange 121 and the lower flange 122 are both positioned on the outer side of the end plate 12, and the inner side surface of the end plate 12 is in stop fit with the outer side surface of the battery cell 10. And, the two sides of the end plate 12 are also respectively provided with a vertical flanging 120, and the upper flanging 121, the lower flanging 122 and the two vertical flanging 120 enclose a rectangular frame. The upper flanging 121, the lower flanging 122 and the two vertical flanging 120 enclose a rectangular frame at the edge of the end plate 12, so that the end plate 12 can be reinforced, and the bending resistance and deformation resistance of the end plate 12 are ensured.
Wherein, the turndown 122 is provided with a first perforation, the first flange 111 and the second flange 112 are provided with a second perforation, and fastening screws 124 are installed in the first perforation and the second perforation in a penetrating way. The downward flange 122 of the end plate 12 is fixed to the first flange 111 or the second flange 112 of the bottom plate 11 by fastening screws 124, so that the end plate 12 and the bottom plate 11 are reliably fixedly connected.
And, the first perforation and the second perforation are waist-shaped holes, and the first perforation and the second perforation are at least two, and at least two first perforations are positioned in the middle of the turndown edge 122, and two second perforations are positioned in the middle of the first flange 111 or the second flange 112. The first perforation and the second perforation are waist-shaped holes, and the relative positions of the end plate 12 and the bottom plate 11 can be flexibly adjusted so as to ensure that the end plate 12 can be accurately fixed on the first flange 111 or the second flange 112, and ensure that the end plate 12 has reliable stopping and limiting effects on the battery cell 10.
Wherein, the lifting hole 123 is provided with at least two, and at least two lifting holes 123 are located the middle part position of going up turn-ups 121, and the downside of lifting hole 123 is fixed with the nut, accessible lifting hole 123 revolves twists the installation rings to implement the operation of lifting up electric core subassembly.
The heat insulation pads 14 are further arranged between two adjacent electric cores 10, the heat insulation pads 14 are respectively attached to the corresponding electric cores 10, the two adjacent electric cores 10 can be separated through the heat insulation pads 14, a certain gap is formed between the electric cores 10 and the electric cores 10, the effect of preventing heat transfer between the electric cores can be achieved, insulating cooling liquid can be supplied to the gap between the electric cores 10, the insulating cooling liquid is fully contacted with the outer surfaces of the electric cores 10, and heat dissipation performance and temperature uniformity of the electric cores are improved.
In addition, the upper flange 121, the lower flange 122, the first flange 111 and the second flange 112 are further provided with fixing holes 125 corresponding up and down, and long bolts are installed in the fixing holes 125 and used for being connected with the battery pack case. Through the fixed orifices of long bolt through going up turn-ups 121, the fixed orifices of turn-ups 122 and the fixed orifices of first flange 111 or the fixed orifices of second flange 112 to link to each other with it is fixed with the battery jar shell, guaranteed the steadiness of electric core subassembly installation on the battery jar shell, prevent to rock easily in transportation or transport, dismantle the change convenience. Furthermore, the end plate 12 is further provided with bracket mounting holes 126, which can be provided with various bracket components made by bending, such as: the L-shaped bracket or the C-shaped bracket, one end of the bracket piece is connected with the end 12, and the other end of the bracket piece can fix a liquid cooling plate or a sensor wire harness mounting plate and the like in the battery pack, so that other fixing parts in the battery pack are reduced.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. The immersed cooling energy storage battery module is characterized by comprising a first electric core component and a second electric core component, wherein a connecting piece is connected between the first electric core component and the second electric core component, and the first electric core component and the second electric core component have the same structure;
the first battery cell assembly comprises a bottom plate, an end plate, binding tapes and a plurality of battery cells, wherein the battery cells are arranged on the upper side surface of the bottom plate, and the binding tapes are connected to the outer parts of the battery cells in a winding manner to form a battery cell module;
the two end plates are vertically fixed on opposite side edges of the bottom plate and are respectively in stop fit with the outer side faces of the battery cells;
the end plate is made by bending, an upper flanging is arranged on the upper portion of the end plate, a lifting hole is formed in the upper flanging, a lower flanging is arranged on the lower portion of the end plate, and the lower flanging is fixedly connected with the edge of the bottom plate.
2. The submerged cooling energy storage battery module of claim 1, wherein the bottom plate is rectangular in outline shape, a first flange is arranged on one side edge of the bottom plate, a second flange is arranged on the other side edge of the bottom plate, the first flange and the second flange are oppositely arranged at intervals, and the first flange and the second flange are both protruded out of the upper surface of the bottom plate.
3. The submerged cooling energy storage battery module of claim 2, wherein the first flange and the second flange are right angle flanges, the first flange comprises a vertical side and a horizontal side that are fixedly connected, the vertical side is flush with the side surface of the end plate, and the horizontal side is in abutting connection with the downward turned edge of the end plate.
4. A submerged cooling energy storage battery module as claimed in claim 3 wherein the end plate is rectangular in shape and outline, the upturn and the downturn are both located on the outside of the end plate, and the inside surface of the end plate is in stop fit with the outside surface of the cell.
5. The submerged cooling energy storage battery module of claim 4, wherein the two sides of the end plate are further provided with vertical flanges respectively, and the upper flange, the lower flange and the two vertical flanges enclose a rectangular frame.
6. The submerged cooling energy storage battery module of claim 5, wherein the downward flange is provided with a first through hole, the first flange and the second flange are provided with a second through hole, and fastening screws are installed in the first through hole and the second through hole in a penetrating manner.
7. The submerged cooling energy storage battery module of claim 6, wherein the first perforation and the second perforation are waist-shaped holes, at least two of the first perforation and the second perforation are arranged, at least two of the first perforation are positioned in the middle of the downward flanging, and two of the second perforation are positioned in the middle of the first flange or the second flange.
8. The submerged cooling energy storage battery module of claim 1, wherein at least two lifting holes are arranged, at least two lifting holes are positioned in the middle of the upper flanging, and nuts are fixed on the lower sides of the lifting holes.
9. The submerged cooling energy storage battery module of claim 1, wherein a heat insulation pad is further arranged between two adjacent electric cores, and the heat insulation pad is respectively attached to the corresponding electric cores.
10. The submerged cooling energy storage battery module of claim 5, wherein the upturn, the downturn, the first flange and the second flange are further provided with fixing holes corresponding up and down, and long bolts are installed in the fixing holes and are used for being connected with a battery pack shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423497.5U CN220774564U (en) | 2023-09-06 | 2023-09-06 | Immersed cooling energy storage battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322423497.5U CN220774564U (en) | 2023-09-06 | 2023-09-06 | Immersed cooling energy storage battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220774564U true CN220774564U (en) | 2024-04-12 |
Family
ID=90618069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322423497.5U Active CN220774564U (en) | 2023-09-06 | 2023-09-06 | Immersed cooling energy storage battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220774564U (en) |
-
2023
- 2023-09-06 CN CN202322423497.5U patent/CN220774564U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3905366B1 (en) | Battery box | |
| CN111403651A (en) | Battery pack box and battery pack with same | |
| CN212725481U (en) | Battery pack box and battery pack with same | |
| CN111065238A (en) | Liquid cooling bottom plate with enhanced structure | |
| CN220774564U (en) | Immersed cooling energy storage battery module | |
| EP3905371B1 (en) | Battery box and battery module | |
| CN214043892U (en) | Battery module, battery package and battery | |
| CN219321539U (en) | Hoisting piece and battery pack | |
| CN207883757U (en) | Battery box body and battery case | |
| EP3790073B1 (en) | Battery pack | |
| CN110600642B (en) | Lithium battery cell structure | |
| WO2019174077A1 (en) | Sealing plate and battery module | |
| CN219457855U (en) | Battery box, power supply system and power distribution equipment | |
| CN113067073A (en) | Battery module frame, battery module and battery package | |
| CN220086173U (en) | Battery module base and battery module | |
| CN207719366U (en) | A kind of battery modules radiator structure | |
| CN209447873U (en) | A kind of battery modules end plate and battery modules | |
| CN212625748U (en) | Battery management system installation device and battery pack with same | |
| CN218569069U (en) | Battery pack | |
| CN215816115U (en) | Cylinder battery module mounting structure | |
| CN220449496U (en) | Hoisting tool for battery box body and battery box body | |
| CN219801160U (en) | Cylindrical battery module | |
| CN219591492U (en) | Heat preservation cover and battery pack | |
| CN218385414U (en) | Liquid cooling battery module and battery package | |
| CN209843800U (en) | Mounting bracket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |