CN210897344U - Cylindrical lithium battery steel shell - Google Patents
Cylindrical lithium battery steel shell Download PDFInfo
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- CN210897344U CN210897344U CN201922418935.2U CN201922418935U CN210897344U CN 210897344 U CN210897344 U CN 210897344U CN 201922418935 U CN201922418935 U CN 201922418935U CN 210897344 U CN210897344 U CN 210897344U
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- steel casing
- steel
- cylindrical lithium
- casing
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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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Abstract
The utility model discloses a cylindrical lithium cell steel casing, including the battery steel casing, the battery steel casing includes steel casing one and steel casing two, the bottom of steel casing one is provided with steel casing two, the inside diameter of steel casing one is 31.7mm, the inside longest diameter of steel casing two is 31.4-31.6mm, the height of steel casing two is 5-12 mm. This cylindrical lithium cell steel casing is at tensile in-process through the steel casing, and the diameter at other positions of interior bottom diameter ratio of steel casing is little to do not influence normal electric core income shell process, then electric core target in place back bottom round and steel casing internal diameter crowded tightly, do not have the space of vibration, can solve the solder joint because of the uncertainty of vibration, improved the stability of battery performance.
Description
Technical Field
The utility model relates to a lithium cell box hat technical field specifically is a cylindrical lithium cell box hat.
Background
The lithium battery with cylindrical steel shell has negative casing and positive cap. The negative pole is formed by welding a negative pole lug of the battery cell and the bottom of the steel shell firmly through a welding needle by an energy storage welding machine. At present, in order to be suitable for the market, a cylindrical lithium battery with a larger size and a steel shell is developed and produced, the traditional point-bottom welding process is also adopted, the negative end of a winding core is connected with a shell, the battery with the larger size is generally used on an electric vehicle, the electric vehicle is difficult to vibrate in the driving process, an electric core inside a power battery with large energy is also larger, in addition, in order to ensure that the assembly can be normally carried out, a point gap exists between the outer diameter of the winding core and the inner diameter of the steel shell, the winding core still has a movable space in the steel shell, and if the vibration is prevented only by one welding point, uncertain factors are brought to the reliability of the battery.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cylindrical lithium cell box hat to the book core that proposes among the solution prior art has the space of activity in the box hat, the relatively poor problem of stability.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cylindrical lithium cell steel casing, includes the battery steel casing, the battery steel casing includes steel casing one and steel casing two, the bottom of steel casing one is provided with steel casing two, the inside diameter of steel casing one is 31.7mm, the inside longest diameter of steel casing two is 31.4-31.6mm, the height of steel casing two is 5-12 mm.
Preferably, the first steel shell and the second steel shell are integrally formed.
Preferably, the inner diameter of the steel shell II is 0.1-0.3mm smaller than that of the steel shell I.
Preferably, the height of the second steel shell is 6-10 mm.
Compared with the prior art, the beneficial effects of the utility model are that: this cylindrical lithium cell steel casing is at tensile in-process through the steel casing, and the diameter at other positions of interior bottom diameter ratio of steel casing is little to do not influence normal electric core income shell process, then electric core target in place back bottom round and steel casing internal diameter crowded tightly, do not have the space of vibration, can solve the solder joint because of the uncertainty of vibration, improved the stability of battery performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view of the structure at a of the present invention.
In the figure: 1. the battery steel shell 11, the steel shell I, the steel shell 12 and the steel shell II.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiment 2, please refer to fig. 1-2, the present invention provides a technical solution: the utility model provides a cylindrical lithium cell steel casing, includes battery steel casing 1, battery steel casing 1 includes steel casing one 11 and steel casing two 12, the bottom of steel casing one 11 is provided with steel casing two 12, the inside diameter of steel casing one 11 is 31.7mm, the inside longest diameter of steel casing two 12 is 31.5mm, the height of steel casing two 12 is 8 mm.
Embodiment 3, please refer to fig. 1-2, the present invention provides a technical solution: the utility model provides a cylindrical lithium cell steel casing, includes battery steel casing 1, battery steel casing 1 includes steel casing one 11 and steel casing two 12, the bottom of steel casing one 11 is provided with steel casing two 12, the inside diameter of steel casing one 11 is 31.7mm, the inside longest diameter of steel casing two 12 is 31.6mm, the height of steel casing two 12 is 10 mm.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation; also, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "integrally formed," and the like are to be construed broadly and can include, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a cylindrical lithium cell steel casing which characterized in that: including battery steel casing (1), battery steel casing (1) includes steel casing (11) and steel casing two (12), the bottom of steel casing (11) is provided with steel casing two (12), the inside diameter of steel casing (11) is 31.7mm, the inside longest diameter of steel casing two (12) is 31.4-31.6mm, the height of steel casing two (12) is 5-12 mm.
2. The cylindrical lithium battery steel case as set forth in claim 1, wherein: the first steel shell (11) and the second steel shell (12) are integrally formed.
3. The cylindrical lithium battery steel case as set forth in claim 1, wherein: the inner diameter of the second steel shell (12) is 0.1-0.3mm smaller than that of the first steel shell (11).
4. The cylindrical lithium battery steel case as set forth in claim 1, wherein: the height of the second steel shell (12) is 6-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922418935.2U CN210897344U (en) | 2019-12-28 | 2019-12-28 | Cylindrical lithium battery steel shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922418935.2U CN210897344U (en) | 2019-12-28 | 2019-12-28 | Cylindrical lithium battery steel shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210897344U true CN210897344U (en) | 2020-06-30 |
Family
ID=71323306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922418935.2U Active CN210897344U (en) | 2019-12-28 | 2019-12-28 | Cylindrical lithium battery steel shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210897344U (en) |
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2019
- 2019-12-28 CN CN201922418935.2U patent/CN210897344U/en active Active
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