CN219626749U - Lower box structure and battery pack device - Google Patents
Lower box structure and battery pack device Download PDFInfo
- Publication number
- CN219626749U CN219626749U CN202320345494.1U CN202320345494U CN219626749U CN 219626749 U CN219626749 U CN 219626749U CN 202320345494 U CN202320345494 U CN 202320345494U CN 219626749 U CN219626749 U CN 219626749U
- Authority
- CN
- China
- Prior art keywords
- liquid cooling
- cooling plate
- supporting
- frame
- support
- 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
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The embodiment of the utility model provides a lower box body structure and a battery pack device, and relates to the field of battery packs. The lower box body structure comprises a frame, a supporting piece and a liquid cooling plate, wherein the supporting piece is arranged on the frame, the supporting piece is provided with a supporting surface, the supporting surface is used for supporting an electric core, the liquid cooling plate is arranged on the frame and/or the supporting piece, the liquid cooling plate comprises a cooling surface, and the height of the cooling surface in the height direction of the lower box body is smaller than or equal to that of the supporting surface. When the lower box body structure is used, the liquid cooling plate is arranged on the frame and/or the supporting piece, the supporting surface of the supporting piece is used for supporting the battery cell, and the height of the cooling surface of the liquid cooling plate on the height direction of the lower box body is smaller than or equal to the height of the supporting surface of the supporting plate, so that the bearing work of the battery cell is completed by the supporting piece, the liquid cooling plate is not carried basically, the battery cell is directly born as the bearing piece by the liquid cooling plate, and the problem of deformation of the liquid cooling plate is avoided.
Description
Cross Reference to Related Applications
The present disclosure claims priority from the chinese patent application No. 202221943528.9, entitled "a liquid cooling structure and battery pack apparatus" filed on the applicant of the chinese patent office at 7/26 of 2022, the entire contents of which are incorporated herein by reference.
Technical Field
The utility model relates to the field of battery packs, in particular to a lower box body structure and a battery pack device.
Background
In order to ensure the mechanical safety and reliability of the battery cell after being mounted to the battery box and meet the requirements of thermal safety and service life, a liquid cooling plate is often designed to cool or heat the battery cell, and a longitudinal beam and a transverse beam are required to support the weight of the battery cell for resisting the load of impact vibration. The liquid cooling plate can be arranged on the upper part of the battery (close to the upper cover of the battery pack) or on the bottom of the battery box body, namely, the liquid cooling plate is integrated on the bottom of the box body through a connecting process.
The cell needs to be supported when the liquid cooling plate is arranged at the lower part of the cell, and as the liquid cooling plate is one or more layers of thin plates, the direct bearing of the liquid cooling plate in the prior art can cause the problem that the liquid cooling plate deforms.
Disclosure of Invention
The utility model provides a lower box body structure and a battery pack device, which can avoid the problem that a liquid cooling plate is deformed because the liquid cooling plate is directly used as a bearing piece to support the weight of a battery core.
Embodiments of the utility model may be implemented as follows:
an embodiment of the present utility model provides a lower case structure, including:
a frame;
the support piece is arranged on the frame and is provided with a support surface for supporting the battery cell;
the liquid cooling plate is arranged on the frame and/or the supporting piece, the liquid cooling plate comprises a cooling surface, and the height of the cooling surface in the height direction of the lower box body is smaller than or equal to the height of the supporting surface.
Optionally, a cross beam is arranged in the space surrounded by the frame, and at least one side of the cross beam is provided with the supporting piece.
Optionally, the frame includes a first boundary beam, the first boundary beam with the crossbeam parallel arrangement, first boundary beam with be provided with at least one between the crossbeam support piece.
Optionally, a longitudinal beam is arranged in the space surrounded by the frame, and at least one side of the longitudinal beam is provided with the supporting piece.
Optionally, the frame includes a second side beam, the second side beam and the longitudinal beam are arranged in parallel, and at least one supporting piece is arranged between the second side beam and the longitudinal beam.
Optionally, the liquid cooling plate is welded or bolted to the frame, and/or the support, and/or the stringers.
Optionally, the liquid cooling plate is welded or bolted to the frame, and/or the support, and/or the cross beam.
The embodiment of the utility model also provides a battery pack device which comprises a battery cell, an upper box body and a lower box body structure, wherein the upper box body is connected with the lower box body structure, and the battery cell is arranged between the lower box body structure and the upper box body.
Optionally, at least two of the supporting members respectively support the battery cells.
The lower box body structure and the battery pack device of the embodiment of the utility model have the beneficial effects that:
the lower box body structure comprises a frame, a supporting piece and a liquid cooling plate, wherein the supporting piece is arranged on the frame, the supporting piece is provided with a supporting surface, the supporting surface is used for supporting an electric core, the liquid cooling plate is arranged on the frame and/or the supporting piece, the liquid cooling plate comprises a cooling surface, and the height of the cooling surface in the height direction of the lower box body is smaller than or equal to that of the supporting surface. When the lower box body structure is used, the liquid cooling plate is arranged on the frame and/or the supporting piece, the supporting surface of the supporting piece is used for supporting the battery cell, and the height of the cooling surface of the liquid cooling plate on the height direction of the lower box body is smaller than or equal to the height of the supporting surface of the supporting plate, so that the bearing work of the battery cell is completed by the supporting piece, the liquid cooling plate is not carried basically, the battery cell is directly born as the bearing piece by the liquid cooling plate, and the problem of deformation of the liquid cooling plate is avoided.
The battery pack device comprises a battery cell, an upper box body and a lower box body structure, wherein the upper box body is connected with the lower box body structure, and the battery cell is arranged between the lower box body structure and the upper box body. When the lower box body structure is used, the liquid cooling plate is arranged on the frame and/or the supporting piece, the supporting surface of the supporting piece is used for supporting the battery cell, and the height of the cooling surface of the liquid cooling plate on the height direction of the lower box body is smaller than or equal to the height of the supporting surface of the supporting plate, so that the bearing work of the battery cell is completed by the supporting piece, the liquid cooling plate is not carried basically, the battery cell is directly born as the bearing piece by the liquid cooling plate, and the problem of deformation of the liquid cooling plate is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first view angle of a battery pack device according to the present embodiment;
fig. 2 is a schematic structural diagram of a second view angle of the battery pack device according to the present embodiment;
FIG. 3 is an enlarged view of area A of FIG. 2;
fig. 4 is a schematic structural diagram of a third view angle of the battery pack device according to the present embodiment.
Icon: 10-frames; 11-a cross beam; 12-a first side beam; 13-a second side beam; 20-a support; 30-liquid cooling plate; 100-lower box structure; 200-cell; 1000-battery pack device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.
In order to maximize the utilization of the volume in the battery pack and improve the specific energy of the battery pack, the design of the battery pack at present is slowly modularized, and the battery cells are directly integrated on the battery box body. Meanwhile, from the single cell level, the cell is also made large and long in order to pursue specific energy and volume composition efficiency. From the design point of view of the battery system, in order to ensure the mechanical safety and reliability of the battery cells after being mounted on the battery box body and meet the requirements of thermal safety and service life at the same time, a liquid cooling plate is often designed to cool or heat the battery cells, and a longitudinal beam and a transverse beam are required to support the weight of the battery cells so as to resist the load of impact vibration. The liquid cooling plate can be arranged on the upper part of the battery (close to the upper cover of the battery pack) or on the bottom of the battery box body, namely, the liquid cooling plate is integrated on the bottom of the box body through a connecting process.
The cell needs to be supported when the liquid cooling plate is arranged at the lower part of the cell, and as the liquid cooling plate is one or more layers of thin plates, the direct bearing of the liquid cooling plate in the prior art can cause the problem that the liquid cooling plate deforms.
Referring to fig. 1-4, a battery pack device 1000 is provided in this embodiment. The battery pack device 1000 includes a battery cell 200, an upper case (not shown) and a lower case structure 100, the upper case (not shown) is connected to the lower case structure 100, and the battery cell 200 is disposed between the lower case structure 100 and the upper case. The battery pack device 1000 can effectively improve the technical problems mentioned above, and can avoid the problem that the liquid cooling plate 30 is deformed because the liquid cooling plate 30 is directly used as a bearing member to support the weight of the battery cell 200.
Referring to fig. 1-4, the lower case structure 100 includes a frame 10, a supporting member 20 and a liquid cooling plate 30, the supporting member 20 is disposed on the frame 10, the supporting member 20 is provided with a supporting surface for supporting the battery cell 200, the liquid cooling plate 30 is disposed on the frame 10 and/or the supporting member 20, the liquid cooling plate 30 includes a cooling surface, and the height of the cooling surface in the height direction of the lower case is less than or equal to the height of the supporting surface.
Specifically, the liquid cooling plate in the prior art is one or more layers of thin plates, and because the strength of the liquid cooling plate is low, the liquid cooling plate in the prior art can cause the problem that the liquid cooling plate is deformed under the condition of directly bearing the electric core. In order to solve the above technical problem, when the lower box structure 100 provided in this embodiment is used, the liquid cooling plate 30 is disposed on the frame 10 and/or the supporting member 20, and the supporting surface of the supporting member 20 is used for supporting the electric core 200, because the height of the cooling surface of the liquid cooling plate 30 in the height direction of the lower box is less than or equal to the height of the supporting surface of the supporting plate, the bearing work of the supporting electric core 200 is completed by the supporting member 20, the liquid cooling plate 30 is basically not bearing, the situation that the liquid cooling plate 30 directly serves as the bearing member to bear the electric core 200 is avoided, and the deformation problem of the liquid cooling plate 30 is avoided.
Specifically, the frame 10 includes two first side beams 12 and two second side beams 13, the number of the first side beams 12 is two, the two first side beams 12 are arranged in parallel, the number of the second side beams 13 is two, the two second side beams 13 are arranged in parallel, the first side beams 12 and the second side beams 13 are connected in sequence to form a square frame structure, and a space enclosed by the first side beams 12 and the second side beams 13 is used for accommodating a battery. The support 20 is fixed to the first side rail 12 near the inner side of the space.
In this embodiment, a beam 11 is disposed in the space surrounded by the frame 10, the beam 11 is located in the middle of the space surrounded by the frame 10, the beam 11 is parallel to the first side beam 12, and supporting members 20 are disposed on two sides of the beam 11, which are close to the first side beam 12.
In the present embodiment, the support 20 is a plate-like structure. Specifically, the support 20 is a square plate structure.
The battery cell 200 in this embodiment has a long-strip-shaped structure, one end of the battery cell 200 is supported by the support member 20 on the first side beam 12, and the other end of the battery cell 200 is supported by the support member 20 on the cross beam 11.
Referring to fig. 3, the edge of the liquid cooling plate 30 is welded to the support member 20 and the lower surface of the cross beam 11, in this embodiment, the height of the cooling surface of the liquid cooling plate 30 in the height direction of the lower case is equal to the height of the support surface of the support member 20 in the height direction of the lower case, the battery cell 200 is fixed on the support member 20 during installation, the weight of the battery cell 200 falls on the support member 20 at this time, and then the liquid cooling plate 30 is welded to the lower surface of the support member 20, and since the support member 20 is already loaded at this time, only the liquid cooling plate 30 is attached to the battery cell 200 during welding, and only a small part of the weight of the battery cell 200 is born by the liquid cooling plate 30 after the liquid cooling plate 30 is welded. Thus avoiding the problem of deformation of the liquid cooling plate 30.
In other embodiments, the lower case structure 100 may be configured without the cross beam 11, and the length of the battery cell 200 is designed to be longer, so that both ends of the battery cell 200 are directly placed on the supporting members 20 of the two first side beams 12.
The second side beam 13 may also be provided with a supporting member 20 near the inner side of the enclosed space, and in this embodiment, if the supporting member 20 is provided on the second side beam 13, the supporting member 20 on the second side beam 13 can only support the outermost battery cell 200.
In another embodiment, a longitudinal beam may be further disposed in the space enclosed by the frame 10, where the longitudinal beam and the second side beam 13 are disposed in parallel, and the two sides of the longitudinal beam near the second side beam 13 are provided with supporting members 20.
In this embodiment, the stringers can only support the cell 200 closest thereto, and the stringers do not contact other cells 200.
In another implementation, a support 20 may be further disposed between the first side beam 12 and the cross beam 11, the support 20 between the first side beam 12 and the cross beam 11 is not in contact with the first side beam 12 and the cross beam 11, two ends of the support 20 between the first side beam 12 and the cross beam 11 are connected with the second side beam 13, and the support 20 between the first side beam 12 and the cross beam 11 is also used for supporting the battery cell 200, so as to improve the installation stability of the battery cell 200.
In another implementation, a supporting piece 20 may be further disposed between the second side beam 13 and the longitudinal beam, the supporting piece 20 between the second side beam 13 and the longitudinal beam is not in contact with the second side beam 13 and the longitudinal beam, two ends of the supporting piece 20 between the second side beam 13 and the longitudinal beam are respectively connected with the first side beam 12 and the cross beam 11, and the supporting piece 20 between the second side beam 13 and the longitudinal beam is also used for supporting the battery cell 200, so that the installation stability of the battery cell 200 is improved.
In this embodiment, the liquid cooling plate 30 is welded to the support 20 and the cross member 11, and in another embodiment, the liquid cooling plate 30 may be connected to the support 20 and the cross member 11 by bolts. It is also possible that the liquid cooling plate 30 is connected to the first side rail 12 and the second side rail 13, but is not connected to the support 20.
In other embodiments, the height of the cooling surface in the height direction of the lower case may be smaller than the height of the supporting surface, and according to this design, a gap is formed between the cooling surface and the lower surface of the battery cell 200, and the gap is filled with a heat-conducting glue, and the heat-conducting glue conducts the heat of the battery cell 200 to the liquid cooling plate 30, so that the liquid cooling plate 30 is ensured not to bear load, and the battery cell 200 is ensured to be cooled by the liquid cooling plate 30.
The beam 11 in this embodiment is provided with a cylindrical electric core, and the beam 11 is used for bearing the weight of the cylindrical electric core, so as to achieve the purpose of bearing.
The lower case structure 100 and the battery pack device 1000 provided in this embodiment have at least the following advantages:
the liquid cooling plate in the prior art is one or more layers of thin plates, and the strength of the liquid cooling plate is low, so that the liquid cooling plate in the prior art can cause the problem of deformation of the liquid cooling plate under the condition of directly bearing a battery cell. In order to solve the above technical problem, when the lower box structure 100 provided in this embodiment is used, the liquid cooling plate 30 is disposed on the frame 10 and/or the supporting member 20, and the supporting surface of the supporting member 20 is used for supporting the electric core 200, because the height of the cooling surface of the liquid cooling plate 30 in the height direction of the lower box is less than or equal to the height of the supporting surface of the supporting plate, the bearing work of the supporting electric core 200 is completed by the supporting member 20, the liquid cooling plate 30 is basically not bearing, the situation that the liquid cooling plate 30 directly serves as the bearing member to bear the electric core 200 is avoided, and the deformation problem of the liquid cooling plate 30 is avoided.
In summary, the embodiment of the utility model provides a lower case structure 100 and a battery pack device 1000, where the lower case structure 100 includes a frame 10, a supporting member 20 and a liquid cooling plate 30, the supporting member 20 is disposed on the frame 10, the supporting member 20 is provided with a supporting surface for supporting a battery cell 200, the liquid cooling plate 30 is disposed on the frame 10 and/or the supporting member 20, the liquid cooling plate 30 includes a cooling surface, and the height of the cooling surface in the height direction of the lower case is less than or equal to the height of the supporting surface. When the lower box body structure 100 is used, the liquid cooling plate 30 is arranged on the frame 10 and/or the supporting piece 20, the supporting surface of the supporting piece 20 is used for supporting the battery cell 200, and the height of the cooling surface of the liquid cooling plate 30 in the height direction of the lower box body is smaller than or equal to the height of the supporting surface of the supporting plate, so that the bearing work of the battery cell 200 is completed by the supporting piece 20, the liquid cooling plate 30 is not bearing basically, the situation that the liquid cooling plate 30 directly serves as a bearing piece to bear the battery cell 200 is avoided, and the problem of deformation of the liquid cooling plate 30 is avoided.
The battery pack device 1000 comprises a battery cell 200, an upper box body and a lower box body structure 100, wherein the upper box body is connected with the lower box body structure 100, and the battery cell 200 is arranged between the lower box body structure 100 and the upper box body. When the lower box body structure 100 is used, the liquid cooling plate 30 is arranged on the frame 10 and/or the supporting piece 20, the supporting surface of the supporting piece 20 is used for supporting the battery cell 200, and the height of the cooling surface of the liquid cooling plate 30 in the height direction of the lower box body is smaller than or equal to the height of the supporting surface of the supporting plate, so that the bearing work of the battery cell 200 is completed by the supporting piece 20, the liquid cooling plate 30 is not bearing basically, the situation that the liquid cooling plate 30 directly serves as a bearing piece to bear the battery cell 200 is avoided, and the problem of deformation of the liquid cooling plate 30 is avoided.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (9)
1. A lower box structure, comprising:
a frame (10);
the support piece (20), the support piece (20) is arranged on the frame (10), the support piece (20) is provided with a support surface, and the support surface is used for supporting the battery cell (200);
the liquid cooling plate (30), liquid cooling plate (30) set up in frame (10) and/or support piece (20), liquid cooling plate (30) include the cooling surface, the height of cooling surface in lower box body direction of height is less than or equal to the height of supporting surface.
2. Lower box structure according to claim 1, characterized in that the frame (10) encloses a space in which a cross beam (11) is arranged, at least one side of the cross beam (11) being provided with the support (20).
3. Lower tank structure according to claim 2, characterized in that the frame (10) comprises a first side beam (12), the first side beam (12) and the cross beam (11) being arranged in parallel, at least one support (20) being arranged between the first side beam (12) and the cross beam (11).
4. Lower box structure according to claim 1, characterized in that the side frame (10) encloses a space in which a longitudinal beam is arranged, at least one side of which is provided with the support (20).
5. Lower tank structure according to claim 4, characterized in that the frame (10) comprises a second side rail (13), the second side rail (13) and the longitudinal beam being arranged in parallel, at least one support (20) being arranged between the second side rail (13) and the longitudinal beam.
6. Lower tank structure according to claim 4, characterized in that the liquid cooling plate (30) is welded or bolted to the frame (10), and/or the support (20), and/or the stringers.
7. Lower tank structure according to claim 2, characterized in that the liquid cooling plate (30) is welded or bolted to the frame (10), and/or the support (20), and/or the cross beam (11).
8. A battery pack device, characterized by comprising a battery cell (200), an upper case and a lower case structure (100) according to any one of claims 1 to 7, wherein the upper case is connected to the lower case structure (100), and the battery cell (200) is disposed between the lower case structure (100) and the upper case.
9. The battery pack device according to claim 8, wherein at least two of the support members (20) support the battery cells (200), respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022219435289 | 2022-07-26 | ||
| CN202221943528 | 2022-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219626749U true CN219626749U (en) | 2023-09-01 |
Family
ID=87773840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320345494.1U Active CN219626749U (en) | 2022-07-26 | 2023-02-27 | Lower box structure and battery pack device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219626749U (en) |
-
2023
- 2023-02-27 CN CN202320345494.1U patent/CN219626749U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7487209B2 (en) | Power battery pack and electric vehicle | |
| CN103493247B (en) | There is the battery pack of high structural stability | |
| JP7047214B2 (en) | Battery pack containing battery module | |
| KR101231111B1 (en) | Battery Pack of Improved Durability | |
| JP7262598B2 (en) | Battery module with thin plate module housing and battery pack including the same | |
| JP2016026372A (en) | Battery module having excellent structural stability | |
| JP7207814B2 (en) | Electric vehicle with power supply and power supply | |
| JP2013507749A (en) | Battery module with excellent structural stability | |
| EP3712980B1 (en) | Battery module and battery pack | |
| WO2012125115A1 (en) | Battery module, vehicle, electric device and method | |
| CN112909401A (en) | Battery module and battery pack | |
| KR20220026813A (en) | Large battery module and a bettery pack including the same | |
| CN114665205B (en) | Balanced pressure-bearing battery pack, preparation method thereof and structure-integrated battery box | |
| CN219626749U (en) | Lower box structure and battery pack device | |
| CN115149187A (en) | Battery module and electronic device | |
| CN210403831U (en) | Battery pack and electric vehicle | |
| CN217848127U (en) | Battery pack and power device | |
| CN217387366U (en) | Tray, battery pack and electric vehicle | |
| JP7307113B2 (en) | VEHICLE BATTERY PACK UNIT AND VEHICLE INCLUDING THE SAME | |
| CN217035861U (en) | Energy storage battery plug-in box structure | |
| CN219917444U (en) | Battery pack and vehicle | |
| GB2483079A (en) | Battery Module | |
| CN213636168U (en) | Square electric core integrated module, battery pack and vehicle | |
| CN221102316U (en) | Battery module without support structure | |
| CN219163593U (en) | Double-layer battery module and battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |