CN219658846U - Power battery shell structure - Google Patents
Power battery shell structure Download PDFInfo
- Publication number
- CN219658846U CN219658846U CN202320891260.7U CN202320891260U CN219658846U CN 219658846 U CN219658846 U CN 219658846U CN 202320891260 U CN202320891260 U CN 202320891260U CN 219658846 U CN219658846 U CN 219658846U
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- Prior art keywords
- thickness
- thick portion
- shell
- thick
- power cell
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- 210000000988 bone and bone Anatomy 0.000 claims description 27
- 229910001416 lithium ion Inorganic materials 0.000 claims description 6
- 229910001415 sodium ion Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a power battery shell structure, which comprises a shell body and a bottom shell, wherein the bottom shell is arranged on the end face of one end of the shell body, the bottom shell and the shell body are integrally formed, and the joint of the bottom shell and the shell body is a first thick part; the thickness of the first thick part is larger than that of the bottom shell; the shell body comprises a first side surface and a second side surface which are connected, wherein the joint of the first side surface and the second side surface is provided with a second thick part, the thickness of the second thick part is larger than that of the first side surface, and the thickness of the second thick part is larger than that of the second side surface; the shell body is far away from an opening at one end of the bottom shell, the periphery of the opening is circumferentially provided with a third thick portion, the thickness of the third thick portion is larger than that of the first side face, and the thickness of the third thick portion is larger than that of the second side face. The utility model can effectively reduce the raw material consumption of the shell and has higher energy density.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a power battery shell structure.
Background
With the development of technology, environmental pollution is increasingly aggravated, and the new energy industry is beginning to receive more and more attention. The power battery (including lithium ion battery and sodium ion battery) is widely used as an energy device in the fields of mobile phones, electric automobiles, electric tools and the like. Among them, lithium batteries are an important component of electric vehicles, and their performance can directly affect the service life of the electric vehicles, and thus, they are attracting attention.
The battery shell is an indispensable accessory of a battery structure, and the shell structure is welded and connected with the top cover structure in a laser welding mode generally, so that a certain thickness and strength are required to be ensured at a laser welding position. Based on the assembly mode of the battery module, the side surfaces of the batteries can be mutually relied on through the extrusion between the batteries to play a role in strengthening, so that the side surfaces of the battery shell can meet the requirement of actual use without being as thick as a welding position or an edge part. However, the casing of the square power battery (lithium ion/sodium ion battery) is usually manufactured by adopting a stretching mode, the prepared battery casings are all casings with consistent thickness, the thickness of each part of the casing cannot be set according to the actual use requirement, the raw material usage amount is large, and the energy density of the battery is also reduced.
Disclosure of Invention
Based on the above, the embodiment of the utility model provides a power battery shell structure, which aims to solve the problems of consistent overall thickness, large raw material consumption angle, lower energy density of a battery and the like of the existing power battery shell. The utility model has simple structure, and can effectively reduce the use amount of raw materials of the battery shell by reducing the thickness of the surface of the power battery shell part, thereby effectively improving the energy density of the power battery.
In order to achieve the above purpose, the embodiment of the present utility model proposes the following technical solutions:
the power battery shell structure comprises a shell body and a bottom shell, wherein the bottom shell is arranged on the end face of one end of the shell body, the bottom shell and the shell body are integrally formed, and the joint of the bottom shell and the shell body is a first thick part; the thickness of the first thick part is larger than that of the bottom shell;
the shell body comprises a first side surface and a second side surface which are connected, wherein the joint of the first side surface and the second side surface is provided with a second thick part, the thickness of the second thick part is larger than that of the first side surface, and the thickness of the second thick part is larger than that of the second side surface;
the shell body is far away from an opening at one end of the bottom shell, the periphery of the opening is circumferentially provided with a third thick portion, the thickness of the third thick portion is larger than that of the first side face, and the thickness of the third thick portion is larger than that of the second side face.
As a preferred embodiment, the thicknesses of the first thick portion, the second thick portion, and the third thick portion are all the same.
As a preferred embodiment, the thickness of the bottom case, the thickness of the first side surface, and the thickness of the second side surface are the same.
As a preferred embodiment, at least one bone site is provided on the first side or the second side, the bone site extending horizontally from the first thick portion to the third thick portion.
As a preferred embodiment, at least one bone site is provided on each of the first side and the second side, the bone site extending horizontally from the first thick portion to the third thick portion.
As a preferred embodiment, the thickness of the bone site is the same as the thickness of the first thick portion, the thickness of the second thick portion, and the thickness of the third thick portion, respectively.
As a preferred embodiment, the first thick portion, the second thick portion, the third thick portion, and the bone site are integrally formed.
As a preferred embodiment, the housing body is a square housing body; the square shell body comprises two first side surfaces and two second side surfaces, the two first side surfaces are symmetrically arranged, and the two second side surfaces are symmetrically arranged.
As a preferred embodiment, the power battery is a square housing power battery, and the square housing power battery is a lithium ion battery or a sodium ion battery.
According to the structure, the first thick part, the second thick part, the third thick part, the bone position and the like are arranged on the power battery shell, so that the connection strength between the connecting parts of the shell structure can be effectively ensured, and meanwhile, the thickness of the surface of the battery shell part can be effectively reduced, the raw material consumption of the battery shell is effectively reduced, and the energy density of the power battery is effectively improved. The utility model has simple structure, can effectively solve the problems of large raw material consumption, low battery energy density and the like of the existing power battery shell, and can be used as a universal product for production and use.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a power cell housing structure according to an embodiment of the present utility model;
fig. 2 is a schematic sectional view of the power battery case structure of fig. 1 in the CC direction;
FIG. 3 is a schematic view of a power cell housing structure according to another embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of the power cell housing structure of FIG. 3 in the AA direction;
fig. 5 is an enlarged schematic view of the power cell housing structure of fig. 4 at B.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all 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, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The shell of the conventional square power battery (including lithium ion/sodium ion battery) is usually manufactured in a stretching mode, the prepared battery shell is uniform in thickness, the thickness of each part of the shell cannot be set according to actual use requirements, the raw material consumption is large, and the energy density of the battery is reduced. Based on the above, the present utility model provides a power battery housing structure to solve the above technical problems.
Specifically, as shown in fig. 1 to 2, an embodiment of the present utility model provides a power battery housing structure, which is suitable for a power battery, and includes a housing body 10 and a bottom shell 20, wherein the bottom shell 20 is disposed on an end surface of one end of the housing body 10, the bottom shell 20 and the housing body 10 are integrally formed, and a connection portion between the bottom shell 20 and the housing body 10 is a first thick portion 30; the thickness of the first thick portion 30 is greater than the thickness of the bottom case 20;
the housing body 10 includes a first side 11 and a second side 12 that are connected, a connection portion between the first side 11 and the second side 12 is provided as a second thick portion 40, a thickness of the second thick portion 40 is greater than a thickness of the first side 11, and a thickness of the second thick portion 40 is greater than a thickness of the second side 12;
the housing body 10 is disposed away from an opening at one end of the bottom case 20, a third thick portion 50 is circumferentially disposed around the periphery of the opening, the thickness of the third thick portion 50 is greater than the thickness of the first side 11, and the thickness of the third thick portion 50 is greater than the thickness of the second side 12.
In a preferred embodiment, the first thick portion 30, the second thick portion 40, and the third thick portion 50 have the same thickness.
As a preferred embodiment, the thickness of the bottom case 20, the thickness of the first side 11, and the thickness of the second side 12 are the same.
As a preferred embodiment, at least one bone site 60 is provided on the first side 11 or the second side 12, and the bone site 60 extends horizontally from the first thick portion 30 to the third thick portion 50.
Specifically, as shown in fig. 3-5, in another embodiment, at least one bone site 60 is disposed on the first side 11, and the bone site 60 extends horizontally from the first thick portion 30 to the third thick portion 50.
As can be seen from fig. 2 and fig. 4, in the structure of the embodiment of the present utility model, the thickness of the first side 11 and the thickness of the second side 12 are much smaller than the thickness of the second thick portion, so that the usage amount of raw materials can be effectively reduced, and the energy density of the battery can be effectively improved.
It will be appreciated that in other embodiments, at least one bone site 60 is provided on each of the first side 11 and the second side 12, the bone site 60 extending horizontally from the first thick portion 30 to the third thick portion 50.
By providing the bone site on the first side or the second side, the strength of the housing can be further enhanced. The number and the setting positions of the bone positions can be set according to the actual use requirement, one bone position can be set, and a plurality of bone positions can be set; the bone sites may be provided only on the first side, may be provided only on the second side, or may be provided on both the first side and the second side.
As a preferred embodiment, the thickness of the bone site 60 is the same as the thickness of the first thick portion 30, the thickness of the second thick portion 40, and the thickness of the third thick portion 50, respectively. The arrangement can well ensure the connection strength between the connection parts of the shell structure, thereby ensuring the strength of welding connection; meanwhile, the preparation process of the shell structure can be simplified.
As a preferred embodiment, the first thick portion 30, the second thick portion 40, the third thick portion 50, and the bone site 60 are integrally formed.
As a preferred embodiment, the housing body 10 is a square housing body; the square shell body comprises two first side surfaces 11 and two second side surfaces 12, wherein the two first side surfaces 11 are symmetrically arranged, and the two second side surfaces 12 are symmetrically arranged.
As a preferred embodiment, the power battery is a square housing power battery, and the square housing power battery is a lithium ion battery or a sodium ion battery.
According to the structure, the first thick part, the second thick part, the third thick part, the bone position and the like are arranged on the power battery shell, so that the connection strength between the connecting parts of the shell structure can be effectively ensured, and meanwhile, the thickness of the surface of the battery shell part can be effectively reduced, the raw material consumption of the battery shell is effectively reduced, and the energy density of the power battery is effectively improved. The utility model has simple structure, can effectively solve the problems of large raw material consumption, low battery energy density and the like of the existing power battery shell, and can be used as a universal product for production and use.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (9)
1. The power battery shell structure is characterized by comprising a shell body and a bottom shell, wherein the bottom shell is arranged on the end face of one end of the shell body, the bottom shell and the shell body are integrally formed, and the joint of the bottom shell and the shell body is a first thick part; the thickness of the first thick part is larger than that of the bottom shell;
the shell body comprises a first side surface and a second side surface which are connected, wherein the joint of the first side surface and the second side surface is provided with a second thick part, the thickness of the second thick part is larger than that of the first side surface, and the thickness of the second thick part is larger than that of the second side surface;
the shell body is far away from an opening at one end of the bottom shell, the periphery of the opening is circumferentially provided with a third thick portion, the thickness of the third thick portion is larger than that of the first side face, and the thickness of the third thick portion is larger than that of the second side face.
2. The power cell housing structure according to claim 1, wherein thicknesses of the first thick portion, the second thick portion, and the third thick portion are all the same.
3. The power cell housing structure according to claim 2, wherein a thickness of the bottom case, a thickness of the first side surface, and a thickness of the second side surface are the same.
4. The power cell housing structure of claim 1, wherein at least one bone site is provided on the first side or the second side, the bone site extending horizontally from the first thick portion to the third thick portion.
5. The power cell housing structure of claim 1, wherein at least one bone site is provided on each of the first side and the second side, the bone site extending horizontally from the first thick portion to the third thick portion.
6. The power cell housing structure according to claim 4 or 5, wherein the thickness of the bone site is the same as the thickness of the first thick portion, the thickness of the second thick portion, and the thickness of the third thick portion, respectively.
7. The power cell housing structure of claim 6, wherein the first thick portion, the second thick portion, the third thick portion, and the bone in one piece are provided.
8. The power cell housing structure according to claim 1, wherein the housing body is a square housing body; the square shell body comprises two first side surfaces and two second side surfaces, the two first side surfaces are symmetrically arranged, and the two second side surfaces are symmetrically arranged.
9. The power cell housing structure of claim 1, wherein the power cell is a square housing power cell, the square housing power cell being a lithium ion cell or a sodium ion cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320891260.7U CN219658846U (en) | 2023-04-19 | 2023-04-19 | Power battery shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320891260.7U CN219658846U (en) | 2023-04-19 | 2023-04-19 | Power battery shell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658846U true CN219658846U (en) | 2023-09-08 |
Family
ID=87880660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320891260.7U Active CN219658846U (en) | 2023-04-19 | 2023-04-19 | Power battery shell structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658846U (en) |
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2023
- 2023-04-19 CN CN202320891260.7U patent/CN219658846U/en active Active
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