CN216671818U - Shell structure and battery with same - Google Patents
Shell structure and battery with same Download PDFInfo
- Publication number
- CN216671818U CN216671818U CN202122410923.2U CN202122410923U CN216671818U CN 216671818 U CN216671818 U CN 216671818U CN 202122410923 U CN202122410923 U CN 202122410923U CN 216671818 U CN216671818 U CN 216671818U
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- Prior art keywords
- pole group
- battery
- housing structure
- plate
- bottom plate
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- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a shell structure and a battery with the same, wherein the shell structure is used for coating a pole group of the battery together with a top cover of the battery, and comprises: the bottom plate and the side plates are arranged around the periphery of the bottom plate to jointly enclose an accommodating cavity for accommodating the pole group and an opening part positioned on one side of each side plate far away from the bottom plate, and the top cover is used for being arranged at the opening part; at least one side plate is provided with a protruding portion, and the protruding portion protrudes towards the inside of the containing cavity and is used for being in contact with the outer surface of the pole group. The shell structure solves the problem that the pole group in the battery in the prior art is easy to expand to block an airflow channel in the battery when thermal runaway occurs in the battery and gas is generated.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a shell structure and a battery with the shell structure.
Background
With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the field of electric vehicles as power batteries. The lithium ion battery mainly comprises a top cover, a shell, a pole group, an outer wrapping film, a top patch and other components. The battery is sealed through laser welding by the shell of top cap and aluminium system, is provided with battery safety structure explosion-proof valve on the top cap, and inside or produce a large amount of gases under out of control state of battery, when the inside atmospheric pressure of battery reached a definite value, explosion-proof valve on the top cap will be opened to with the battery pressure release.
However, the inner surface of the outer shell of the battery in the prior art is a smooth plane, so that safety risk exists with a certain probability, and when the battery is out of control, gas is rapidly generated inside, so that the pole group is in close contact with the outer shell due to expansion, an airflow channel inside the battery is blocked, airflow cannot well flow to the explosion-proof valve, the explosion-proof valve cannot be opened in time, and great safety risk is caused. Especially, the size of the current batteries is larger and larger, and the failure probability of the batteries is improved.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a shell structure and a battery with the shell structure, so as to solve the problem that an air flow channel in the battery is blocked because a pole group in the battery in the prior art is easy to expand when thermal runaway occurs in the battery and gas is generated.
In order to achieve the above object, according to one aspect of the present invention, there is provided a case structure for covering a pole group of a battery together with a top cap of the battery, the case structure including: the bottom plate and the side plates are arranged around the periphery of the bottom plate to jointly enclose an accommodating cavity for accommodating the pole group and an opening part positioned on one side of each side plate far away from the bottom plate, and the top cover is used for being installed at the opening part; at least one side plate is provided with a protruding part, and the protruding part protrudes towards the inside of the accommodating cavity and is used for being in contact with the outer surface of the pole group.
Further, the plurality of side plates comprise two first side plates arranged oppositely and two second side plates arranged oppositely; wherein, the first side plate is provided with a convex part; and/or the second side plate is provided with a convex part.
Further, the cross section of the convex part parallel to the side plate is rectangular, wherein the dimension of the convex part in the direction perpendicular to the bottom plate is H, the dimension of the pole group in the direction perpendicular to the bottom plate is H0, wherein H is less than H0; and/or the dimension of the projections in a direction parallel to the base plate is V, and the dimension of the pole group in a direction parallel to the base plate is V0, wherein V is smaller than V0.
Further, the difference between H0 and H is greater than or equal to 6 mm; and/or the difference between V0 and V is greater than or equal to 6 mm.
Further, the distance between one side of the protruding part close to the pole group and one side of the main plate body of the corresponding side plate close to the pole group is M, wherein M is greater than or equal to 0.5 mm.
Further, on one side plate, the number of the convex parts is one; or the number of the convex parts is multiple, wherein the convex parts are arranged at intervals along the direction vertical to the bottom plate; and/or a plurality of projections are arranged at intervals in a direction parallel to the base plate.
Further, the convex portion is hemispherical, cylindrical, annular, or prismatic.
Furthermore, the shell structure is a sheet metal part, and the bulge part is formed by stamping.
Further, the material of the housing structure comprises aluminum.
According to another aspect of the present invention, there is provided a battery comprising a pole group, and a housing and a top cover for containing the pole group, the housing being of the above-described housing structure.
By applying the technical scheme of the utility model, the shell structure is used for coating the pole group of the battery together with the top cover of the battery, and comprises the following components: the bottom plate and the side plates are arranged around the periphery of the bottom plate to jointly enclose an accommodating cavity for accommodating the pole group and an opening part which is positioned on one side of each side plate far away from the bottom plate and communicated with the accommodating cavity, and the top cover is used for being installed at the opening part; at least one side plate is provided with a protruding portion, and the protruding portion protrudes towards the inside of the containing cavity and is used for being in contact with the outer surface of the pole group. According to the utility model, the side plate of the shell structure of the battery is provided with the protruding part protruding towards the inner space of the battery, when the pole group in the battery expands due to thermal runaway, the protruding part only contacts one side, close to the inner space of the battery, of the protruding part and does not contact the main plate body of the side plate, namely the pole group does not completely contact the shell structure, and the gap between the part of the side plate, which is not in contact with the pole group, and the pole group forms the airflow channel, so that airflow generated by the thermal runaway can smoothly reach the explosion-proof valve to open the explosion-proof valve in time, and the gas is smoothly discharged, and the problem that the airflow channel in the battery is blocked due to the fact that the pole group in the battery is easy to expand when the thermal runaway occurs in the battery and gas is generated in the prior art is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 shows a half sectional view of a battery in one direction according to an embodiment of the housing structure of the present invention;
FIG. 2 shows a half-sectional view of the battery shown in FIG. 1 in another direction;
fig. 3 is a schematic structural view showing a structure of a case of the battery shown in fig. 1;
FIG. 4 shows a half-sectional view of the housing structure shown in FIG. 3 in one direction;
FIG. 5 shows a close-up view of the housing structure shown in FIG. 4 at A;
FIG. 6 shows a half-sectional view of the housing structure of FIG. 3 in another direction; and
fig. 7 shows a close-up view of the housing structure shown in fig. 6 at B.
Wherein the figures include the following reference numerals:
10. a housing; 11. a boss portion; 12. a base plate; 13. a side plate; 131. a first side plate; 132. a second side plate; 20. a top cover; 30. a pole group; 40. an explosion-proof valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 7, the present invention provides a case structure for covering a pole group 30 of a battery together with a top cap 20 of the battery, the case structure including: a bottom plate 12 and a plurality of side plates 13 arranged around the periphery of the bottom plate 12 to jointly enclose an accommodating cavity for accommodating the pole group 30 and an opening portion located on one side of each side plate 13 away from the bottom plate 12, wherein the top cover 20 is used for being installed at the opening portion; wherein at least one side plate 13 is provided with a protruding portion 11, and the protruding portion 11 protrudes towards the inside of the accommodating cavity for contacting with the outer surface of the pole group 30.
The housing structure of the present invention is used for covering a pole group 30 of a battery together with a top cap 20 of the battery, and the housing structure includes: a bottom plate 12 and a plurality of side plates 13 arranged around the periphery of the bottom plate 12 to jointly enclose an accommodating cavity for accommodating the pole group 30 and an opening portion located on one side of each side plate 13 far away from the bottom plate 12 and communicated with the accommodating cavity, and a top cover 20 is used for being installed at the opening portion; wherein at least one side plate 13 is provided with a protruding portion 11, and the protruding portion 11 protrudes towards the inside of the accommodating cavity for contacting with the outer surface of the pole group 30. According to the utility model, the protruding part 11 protruding towards the internal space of the battery is arranged on the side plate of the shell structure of the battery, when the pole group 30 in the battery expands due to thermal runaway, the protruding part 11 only contacts one side of the internal space of the battery close to the protruding part 11 and does not contact the main plate body of the side plate 13, namely, the pole group 30 does not completely contact the shell structure, and an airflow channel is formed between the part of the side plate 13 not contacting the pole group 30 and the gap between the pole group 30, so that airflow generated by the thermal runaway can smoothly reach the explosion-proof valve to open the explosion-proof valve in time, and the gas is smoothly discharged, and the problem that the airflow channel in the battery is blocked due to the fact that the pole group in the battery is easy to expand when the thermal runaway occurs in the battery and gas is generated in the prior art is solved.
Alternatively, the plurality of side plates 13 includes two first side plates 131 disposed oppositely and two second side plates 132 disposed oppositely; wherein, the first side plate 131 is provided with a convex part 11; and/or the second side plate 132 is provided with a boss 11.
The bottom plate 12 is rectangular, the two first side plates 131 are respectively used for being connected with two wide side surfaces of the bottom plate 12, and the two second side plates 132 are respectively used for being connected with two long side surfaces of the bottom plate 12.
In the embodiment of the present invention shown in fig. 1 to 7, the number of the protrusions 11 provided on each first side plate 131 is one, and the cross section of the protrusion 11 parallel to the side plate 13 is rectangular, wherein the dimension of the protrusion 11 in the direction perpendicular to the bottom plate 12 is H, the dimension of the pole group 30 in the direction perpendicular to the bottom plate 12 is H0, wherein H is smaller than H0; and/or the dimension of the projections 11 in a direction parallel to the base plate 12 is V, and the dimension of the pole group 30 in a direction parallel to the base plate 12 is V0, wherein V is smaller than V0.
Preferably, the difference between H0 and H is greater than or equal to 6 mm; and/or the difference between V0 and V is greater than or equal to 6 mm.
As shown in fig. 1, the number of the protruding portions 11 is two, and the two protruding portions 11 are respectively disposed on the two first side plates 131, wherein a distance between a side of each protruding portion 11 close to the bottom plate 12 and a side of the pole group 30 close to the bottom plate 12 along a direction perpendicular to the bottom plate 12 is H1, and H1 is greater than or equal to 3 mm; the distance in the direction perpendicular to the top cover 20 between the side of each boss 11 close to the top cover 20 and the side of the pole group 30 close to the top cover 20 is H2, and H2 is greater than or equal to 3 mm.
As shown in fig. 2, the number of the protrusions 11 is two, and the two protrusions 11 are respectively disposed on the two first side plates 131, wherein a distance between a side of each protrusion 11 close to one of the second side plates 132 and a side of the pole group 30 close to the second side plate 132 in a direction perpendicular to the second side plate 132 is V1, and V1 is greater than or equal to 3 mm; the distance between the side of each boss 11 close to the other second side plate 132 and the side of the pole group 30 close to the second side plate 132 in the direction perpendicular to the second side plate 132 is V2, and V2 is greater than or equal to 3 mm.
As shown in fig. 7, the distance between the side of the protruding portion 11 close to the pole group 30 and the side of the main plate body of the corresponding side plate 13 close to the pole group 30 is M, where M is greater than or equal to 0.5 mm.
On one side plate 13, the number of the convex portions 11 is one; or the number of the convex parts 11 is multiple, wherein the convex parts 11 are arranged at intervals along the direction vertical to the bottom plate 12; or the number of the convex parts 11 is multiple, wherein the convex parts 11 are arranged at intervals along the direction parallel to the bottom plate 12; or the number of the convex portions 11 is plural, wherein a part of the plural convex portions 11 is arranged at intervals in a direction perpendicular to the bottom plate 12, and another part of the plural convex portions 11 is arranged at intervals in a direction parallel to the bottom plate 12.
The protruding portion 11 of the housing structure of the present invention may be hemispherical, cylindrical, circular, prismatic, or other regular or irregular shapes.
Preferably, the shell structure is a sheet metal part, and the boss 11 is formed by a stamping process.
Further preferably, the material of construction of the housing comprises aluminium.
The utility model also provides a battery, which comprises a pole group 30, a shell 10 and a top cover 20, wherein the shell 10 is used for containing the pole group 30, and the shell structure is adopted by the shell 10. Wherein, the top cover 20 is provided with an explosion-proof valve 40.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the housing structure of the present invention is used for covering a pole group 30 of a battery together with a top cap 20 of the battery, and the housing structure includes: a bottom plate 12 and a plurality of side plates 13 arranged around the periphery of the bottom plate 12 to jointly enclose an accommodating cavity for accommodating the pole group 30 and an opening portion located on one side of each side plate 13 far away from the bottom plate 12 and communicated with the accommodating cavity, and a top cover 20 is used for being installed at the opening portion; wherein at least one side plate 13 is provided with a protruding portion 11, and the protruding portion 11 protrudes towards the inside of the accommodating cavity for contacting with the outer surface of the pole group 30. According to the utility model, the protruding part 11 protruding towards the internal space of the battery is arranged on the side plate of the shell structure of the battery, when the pole group 30 in the battery expands due to thermal runaway, the protruding part 11 only contacts one side of the internal space of the battery close to the protruding part 11 and does not contact the main plate body of the side plate 13, namely, the pole group 30 does not completely contact the shell structure, and an airflow channel is formed between the part of the side plate 13 not contacting the pole group 30 and the gap between the pole group 30, so that airflow generated by the thermal runaway can smoothly reach the explosion-proof valve to open the explosion-proof valve in time, and the gas is smoothly discharged, and the problem that the airflow channel in the battery is blocked due to the fact that the pole group in the battery is easy to expand when the thermal runaway occurs in the battery and gas is generated in the prior art is solved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A housing structure for encasing a pole set (30) of a battery in conjunction with a top cover (20) of the battery, the housing structure comprising:
a bottom plate (12) and a plurality of side plates (13) arranged around the periphery of the bottom plate (12) to jointly enclose an accommodating cavity for accommodating the pole group (30) and an opening portion located on one side of each side plate (13) far away from the bottom plate (12), wherein the top cover (20) is used for being installed at the opening portion;
wherein, at least one lateral plate (13) is provided with a convex part (11), and the convex part (11) is protruded towards the inside of the accommodating cavity and is used for contacting with the outer surface of the pole group (30).
2. The housing structure according to claim 1, wherein the plurality of side plates (13) comprises two first side plates (131) arranged opposite and two second side plates (132) arranged opposite; wherein,
the first side plate (131) is provided with the protruding part (11); and/or
The second side plate (132) is provided with the protruding portion (11).
3. Housing structure in accordance with claim 1, characterized in that the cross section of the protrusion (11) parallel to the side plate (13) is rectangular, wherein,
the dimension of the boss (11) in the direction perpendicular to the base plate (12) is H, the dimension of the pole group (30) in the direction perpendicular to the base plate (12) is H0, wherein H is less than H0; and/or
The dimension of the projection (11) in a direction parallel to the base plate (12) is V, and the dimension of the pole group (30) in a direction parallel to the base plate (12) is V0, wherein V is smaller than V0.
4. The housing structure according to claim 3,
the difference between H0 and H is greater than or equal to 6 mm; and/or
The difference between V0 and V is greater than or equal to 6 mm.
5. The housing structure according to claim 1,
the distance between one side of the lug boss (11) close to the pole group (30) and one side of the main plate body of the corresponding side plate (13) close to the pole group (30) is M, wherein M is larger than or equal to 0.5 mm.
6. Housing structure in accordance with claim 1, characterized in that on one of said side plates (13),
the number of the convex parts (11) is one; or alternatively
The number of the convex parts (11) is multiple, wherein the convex parts (11) are arranged at intervals along the direction vertical to the bottom plate (12); and/or a plurality of said projections (11) are arranged at intervals in a direction parallel to said base plate (12).
7. The housing structure according to claim 1, characterized in that the protrusions (11) are hemispherical, or cylindrical, or circular ring, or prism-shaped.
8. A shell structure according to claim 1, characterized in that the shell structure is sheet metal, and the projections (11) are formed by stamping.
9. The housing structure according to claim 1, characterized in that the material of which the housing structure is made is aluminium.
10. A battery comprising a pole group (30) and a casing (10) and a top cover (20) for covering the pole group (30), characterized in that the casing (10) is a casing structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410923.2U CN216671818U (en) | 2021-09-30 | 2021-09-30 | Shell structure and battery with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410923.2U CN216671818U (en) | 2021-09-30 | 2021-09-30 | Shell structure and battery with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216671818U true CN216671818U (en) | 2022-06-03 |
Family
ID=81765689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122410923.2U Active CN216671818U (en) | 2021-09-30 | 2021-09-30 | Shell structure and battery with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216671818U (en) |
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2021
- 2021-09-30 CN CN202122410923.2U patent/CN216671818U/en active Active
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