CN218498327U - Power battery structure with insulativity - Google Patents
Power battery structure with insulativity Download PDFInfo
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- CN218498327U CN218498327U CN202222257628.2U CN202222257628U CN218498327U CN 218498327 U CN218498327 U CN 218498327U CN 202222257628 U CN202222257628 U CN 202222257628U CN 218498327 U CN218498327 U CN 218498327U
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- protective layer
- top cover
- metal shell
- power battery
- battery structure
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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 relates to a power battery structure with insulativity, which comprises a metal shell, a protective layer, a cell body and a top cover component; the battery cell body is arranged in the metal shell; the protective layer is arranged on the outer side surface of the metal shell and is abutted against the outer side surface of the metal shell; the end surface of the protective layer, which is close to one end of the top cover assembly, is lower than the end surface of the metal shell, and the end surface of the protective layer, which is close to one end of the top cover assembly, is higher than the end surface of the electric core body; the top cover assembly is arranged at the top end of the battery cell body and is abutted to the metal shell. The utility model can prevent the outside of the metal shell from contacting with the chassis or other batteries, thereby effectively preventing the potential safety hazard of fire caused by the short circuit of the chassis; the sealing structure is simple, the protective layer is not seamless in wrapping, the sealing performance is good, the cost is low, and the sealing structure can be used as a general product for production and use.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a power battery structure with insulating nature.
Background
With the development of science and technology, environmental pollution is increasingly aggravated, and the new energy industry is concerned by more and more people. The lithium ion power battery is widely applied to the fields of mobile phones, electric automobiles, electric tools and the like as an energy device. Among them, the lithium ion battery is a core component of a new energy electric vehicle, and the safety performance of the lithium ion battery is concerned by people.
The lithium ion power battery prepared by adopting the metal shell has the advantages of good heat dissipation performance, high mechanical strength and the like, and is favored by the majority of lithium battery manufacturers. All the external surfaces of the lithium ion batteries are coated with a layer of insulating film to prevent the contact of the battery cell shell and a case or other battery cells and avoid potential safety hazards. However, the current coating method adopted by the prior art cannot completely cover the aluminum shell, has gaps, has great potential safety hazards, and is easy to influence the use stability of the lithium battery.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a power battery structure with insulating nature aims at solving the diolame mode that prior art adopted and can not cover aluminum hull completely, has the gap, has great potential safety hazard, also influences the stability in use's of battery problem easily. This application simple structure, the parcel is seamless, and the leakproofness is good, can effectively avoid the emergence of potential safety hazard.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a power battery structure with insulativity comprises a metal shell, a protective layer, a battery cell body and a top cover assembly; the battery cell body is arranged in the metal shell; the protective layer is arranged on the outer side surface of the metal shell and is abutted against the outer side surface of the metal shell; the end face of the protective layer, which is close to one end of the top cover assembly, is lower than the end face of the metal shell, and the end face of the protective layer, which is close to one end of the top cover assembly, is higher than the end face of the electric core body; the top cover assembly is arranged at the top end of the battery cell body and is abutted to the metal shell.
As a preferred embodiment, the top cover assembly comprises a top cover plate, a positive pole column part, a negative pole column part and a lower plastic sheet; the positive pole post part and the negative pole post part are respectively arranged at two ends of the top cover plate, the top cover plate is arranged on the lower plastic sheet, and the top cover plate is abutted to the lower plastic sheet; the lower plastic sheet is arranged on the end face of the top end of the battery cell body; the top cover plate is abutted against the metal shell.
The protective layer is arranged, so that the contact between the outside of the battery and the case or other batteries can be isolated, the potential safety hazard of fire due to short circuit of the case can be effectively prevented, and meanwhile, the corrosion of the outside of the metal shell can be effectively prevented.
The end face of the protective layer close to the top cover assembly is lower than the end face of the metal shell and higher than the end face of the battery cell body. Set up like this, when guaranteeing that the inoxidizing coating can play fine insulating protective effect, melt the inoxidizing coating when effectively preventing top cap subassembly and metal casing welding, arouse the fried fire scheduling problem of welding.
In a preferred embodiment, the protective layer is disposed around the metal shell.
In a preferred embodiment, the protective layer is an insulating protective layer formed by injection molding or spray coating. Therefore, the protective layer can effectively prevent the battery from contacting with the case or other batteries, and further effectively prevent the potential safety hazard of fire caused by short circuit of the case.
As a preferred embodiment, the protective layer is preferably a PP protective layer, a PET protective layer or a PPs protective layer.
As a preferred embodiment, both ends of the top cover sheet are symmetrically provided with a positive pole column hole and a negative pole column hole; the positive pole post part is arranged in the positive pole post hole, and the negative pole post part is arranged in the negative pole post hole.
In a preferred embodiment, an explosion-proof valve hole is arranged between the positive pole column hole and the negative pole column hole, and an explosion-proof valve assembly is arranged in the explosion-proof hole.
In a preferred embodiment, the metal case is an aluminum case.
As a preferred embodiment, the power battery is a lithium battery or a sodium battery.
The structure of the utility model can well prevent the outside of the metal shell from contacting with the chassis or other batteries, thereby effectively preventing the potential safety hazard of fire caused by the short circuit of the chassis and simultaneously effectively preventing the outside of the metal shell from being corroded; the manufacturing process of the coating can be omitted, and the manufacturing efficiency is improved. The application has the advantages of simple structure, seamless coating of the protective layer, good sealing performance, low cost and capability of being produced and used as a general product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power battery with insulation according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view along the AA direction of the power battery structure with insulation in fig. 1;
fig. 3 is an enlarged structural schematic diagram of the power battery structure with insulation in fig. 2 at B.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion condition, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It will be understood that when an element is referred to as being "secured to" 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 relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The current coating mode adopted by the prior art can not completely cover the aluminum shell, has gaps, has great potential safety hazards and is easy to influence the use stability of the lithium battery. Based on this, the utility model provides a power battery structure with insulating nature is in order to solve above-mentioned technical problem.
Specifically, as shown in fig. 1 to 3, an embodiment of the present invention provides a power battery structure with insulation, including a metal casing 10, a protective layer 20, a battery cell body 30, and a top cap assembly 40; the battery cell body 30 is arranged in the metal casing 10; the protective layer 20 is arranged on the outer side surface of the metal shell 10, and the protective layer 20 is abutted against the outer side surface of the metal shell 10; the end surface of the protective layer 20 close to one end of the top cap assembly 40 is lower than the end surface of the metal shell 10, and the end surface of the protective layer 20 close to one end of the top cap assembly 40 is higher than the end surface of the cell body 30; the top cover assembly 40 is disposed at the top end of the battery cell body 30, and the top cover assembly 40 abuts against the metal casing 10.
In a preferred embodiment, the top cover assembly 40 includes a top cover sheet 41, a positive pole column part 42, a negative pole column part 43, and a lower plastic sheet 44; the positive pole column part 42 and the negative pole column part 43 are respectively arranged at two ends of the top cover plate 41, the top cover plate 41 is arranged on the lower plastic sheet 44, and the top cover plate 41 is abutted against the lower plastic sheet 44; the lower plastic sheet 44 is arranged on the end surface of the top end of the battery cell body 30; the top cover sheet 41 abuts against the metal case 10.
The protective layer 20 is arranged in such a way, the contact between the outside of the battery and the case or other batteries can be isolated, the potential safety hazard of fire caused by the short circuit of the case can be effectively prevented, and meanwhile, the corrosion of the outside of the metal shell can be effectively prevented.
The end face of the protective layer close to the top cover assembly is lower than the end face of the metal shell and higher than the end face of the battery cell body. Set up like this, when guaranteeing that the inoxidizing coating can play fine insulating protective effect, melt the inoxidizing coating when effectively preventing top cap subassembly and metal casing welding, arouse the fried fire scheduling problem of welding.
In a preferred embodiment, the protective layer 20 is disposed to surround the metal shell 10.
In a preferred embodiment, the protective layer 20 is an insulating protective layer formed by injection molding or spray coating. Specifically, in the present embodiment, the protective layer 20 is an insulating protective layer formed by injection molding. Therefore, the protective layer 20 can effectively prevent the contact between the outside of the battery and a case or other batteries, and further effectively prevent the potential safety hazard of fire caused by the short circuit of the case.
As a preferred embodiment, the protective layer 20 is generally a PP protective layer, a PET protective layer or a PPs protective layer. Specifically, in this embodiment, the protection layer 20 is a PP protection layer. It will be appreciated that in other embodiments, the protective layer 20 may also be a PET protective layer or a PPS protective layer or a protective layer of other insulating material.
As a preferred embodiment, both ends of the top cover sheet are symmetrically provided with a positive pole column hole (not marked in the figure) and a negative pole column hole (not marked in the figure); the positive pole post part is arranged in the positive pole post hole, and the negative pole post part is arranged in the negative pole post hole.
In a preferred embodiment, an explosion-proof valve hole (not shown) is disposed between the positive pole column hole and the negative pole column hole, and an explosion-proof valve assembly 50 is disposed in the explosion-proof valve hole.
In a preferred embodiment, the metal case is an aluminum case.
In a preferred embodiment, the power battery is a lithium battery or a sodium battery. Specifically, in this embodiment, the power battery is a lithium battery. It is understood that in other embodiments, the power cell may also be a sodium cell.
In this application, lower plastic piece can be processed through the mode of moulding plastics and obtain, has higher precision, simple structure, reliable moreover.
In the embodiment of the application, the positive pole part and the negative pole part are fixed by adopting a pre-assembly positioning and then a welding mode, wherein the welding mode can be one or combination of multiple welding modes such as laser welding, resistance welding, friction welding and the like.
The structure of the utility model can well prevent the outside of the metal shell from contacting with the chassis or other batteries, thereby effectively preventing the potential safety hazard of fire caused by the short circuit of the chassis and simultaneously effectively preventing the outside of the metal shell from being corroded; the manufacturing process of the coating can be omitted, and the manufacturing efficiency is improved. The application has the advantages of simple structure, seamless wrapping of the protective layer, good sealing performance and low cost, and can be produced and used as a universal product.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be understood by those skilled in the art that the specification as a whole and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (9)
1. A power battery structure with insulativity is characterized by comprising a metal shell, a protective layer, a battery cell body and a top cover assembly; the battery cell body is arranged in the metal shell; the protective layer is arranged on the outer side surface of the metal shell and is abutted against the outer side surface of the metal shell; the end surface of the protective layer, which is close to one end of the top cover assembly, is lower than the end surface of the metal shell, and the end surface of the protective layer, which is close to one end of the top cover assembly, is higher than the end surface of the electric core body; the top cover assembly is arranged at the top end of the battery cell body and is abutted to the metal shell.
2. The power battery structure with insulation property of claim 1, wherein the top cover component comprises a top cover plate, a positive pole column part, a negative pole column part and a lower plastic sheet; the positive pole column part and the negative pole column part are respectively arranged at two ends of the top cover plate, the top cover plate is arranged on the lower plastic sheet, and the top cover plate is abutted to the lower plastic sheet; the lower plastic sheet is arranged on the end face of the top end of the battery cell body; the top cover plate is abutted against the metal shell.
3. The power battery structure with insulation according to claim 1, wherein the protective layer is disposed around the metal shell.
4. The power battery structure with the insulation property as claimed in claim 1, wherein the protective layer is an insulation protective layer formed by injection molding or spray coating.
5. The power battery structure with insulation according to claim 1, wherein the protective layer is a PP protective layer, a PET protective layer or a PPs protective layer.
6. The power battery structure with insulation property according to claim 2, wherein the top cover sheet is symmetrically provided with a positive pole column hole and a negative pole column hole at two ends; the positive pole post part is arranged in the positive pole post hole, and the negative pole post part is arranged in the negative pole post hole.
7. The power battery structure with the insulation property according to claim 6, wherein an explosion-proof valve hole is arranged between the positive pole column hole and the negative pole column hole, and an explosion-proof valve assembly is arranged in the explosion-proof valve hole.
8. The insulating power battery structure according to claim 1, wherein the metal casing is an aluminum casing.
9. The power battery structure with insulation according to claim 1, wherein the power battery is a lithium battery or a sodium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257628.2U CN218498327U (en) | 2022-08-26 | 2022-08-26 | Power battery structure with insulativity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257628.2U CN218498327U (en) | 2022-08-26 | 2022-08-26 | Power battery structure with insulativity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218498327U true CN218498327U (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222257628.2U Active CN218498327U (en) | 2022-08-26 | 2022-08-26 | Power battery structure with insulativity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218498327U (en) |
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2022
- 2022-08-26 CN CN202222257628.2U patent/CN218498327U/en active Active
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