CN217589174U - Power battery top cover positive electrode structure and power battery top cover - Google Patents
Power battery top cover positive electrode structure and power battery top cover Download PDFInfo
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- CN217589174U CN217589174U CN202220122728.1U CN202220122728U CN217589174U CN 217589174 U CN217589174 U CN 217589174U CN 202220122728 U CN202220122728 U CN 202220122728U CN 217589174 U CN217589174 U CN 217589174U
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- top cover
- pole
- power battery
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- mounting seat
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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 application relates to a top cover positive electrode structure of a power battery, which comprises a positive electrode pole, a top cover plate, a lower plastic sheet and a positive electrode connecting sheet; the top cover plate is arranged on the lower plastic sheet; one end of the top cover plate is provided with a pole mounting seat matched with the positive pole, and the positive pole is fixedly arranged on the pole mounting seat; a slotted hole matched with the pole mounting seat is formed in one end, close to the pole mounting seat, of the lower plastic sheet, one side, close to the lower plastic sheet, of the pole mounting seat is clamped in the slotted hole, and the positive connecting sheet is in contact connection with one side, close to the lower plastic sheet, of the pole mounting seat; one side of the lower plastic sheet close to the top cover sheet is abutted with the top cover sheet. In addition, this application still provides a power battery top cap. The positive pole structure of this application constitutes simply, and the leakproofness is good, and the cost is lower, has avoided the risk of positive pole utmost point post weeping, can produce and use as the general purpose article.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a power battery top cap positive pole structure and power battery top cap.
Background
With the development of science and technology, the power battery is more and more concerned as an energy device, and is widely applied to the fields of mobile phones, electric automobiles, electric tools and the like.
The lithium ion battery as the main power battery has various top cover pole column structures, a top cover pole column is integrally arranged, and the pole column is independently arranged as a component and then welded on the top cover sheet to form a complete top cover structure. Generally, the outer shell of the square power battery is mostly an aluminum shell, and if the shell has a low potential and can generate current with the positive electrode, the shell is slowly corroded due to migration of aluminum ions to the positive electrode. Therefore, in actual production, a resistor is often installed between the shell and the anode, so that the potential of the shell is increased, and the purpose of preventing the shell from being corroded slowly is achieved, the structure of the top cover plate of the power battery is rechecked, the production difficulty of the top cover plate is increased, and meanwhile, the production cost of the top cover plate is higher. And, because the anodal department of lamina tecti is provided with the trompil, the risk of anodal utmost point post weeping takes place easily.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a positive polar structure of power battery top cap and power battery top cap aims at solving the problem that the positive polar structure of power battery top cap is complicated, the cost is higher, the leakproofness is relatively poor, anodal utmost point post weeping etc.. The utility model discloses a positive structure of top cap simple structure, the leakproofness is good, and the cost is lower, can avoid anodal utmost point post weeping, has better reliability moreover, can regard as the universal product to produce and use.
On one hand, the embodiment of the utility model provides a power battery top cap positive pole structure, is used for square shell battery, includes positive pole post, top cap piece, lower plastic piece and positive connection piece; the top cover plate is arranged on the lower plastic sheet;
one end of the top cover plate is provided with a pole mounting seat matched with the positive pole, and the positive pole is fixedly arranged on the pole mounting seat;
a slotted hole matched with the pole mounting seat is formed in one end, close to the pole mounting seat, of the lower plastic sheet, one side, close to the lower plastic sheet, of the pole mounting seat is clamped in the slotted hole, and the positive connecting sheet is in contact connection with one side, close to the lower plastic sheet, of the pole mounting seat;
one side of the lower plastic sheet close to the top cover sheet is abutted with the top cover sheet.
In one embodiment, the pole mounting seat is a concave pit structure, and the concave pit structure is matched with the positive pole.
In one embodiment, the pole mounting seat is a raised structure, and the raised structure is matched with the positive pole.
In one embodiment, the positive pole is fixedly arranged on the pole mounting seat in a welding or riveting mode.
In one embodiment, the positive electrode pole is preferably a circular pole, a square pole, a polygonal pole or an oval pole.
In one embodiment, the positive electrode pole is a pole formed by punching an aluminum coil.
In one embodiment, the top cover sheet is a top cover sheet made of a conductive material. In this application, power battery's electric current can loop through anodal utmost point post, top cap piece and anodal connection piece and reach the purpose of drawing electric current.
In one embodiment, the prismatic case battery comprises a lithium battery or a sodium battery.
On the other hand, the embodiment of the utility model provides a still provide a power battery top cap, the power battery top cap includes power battery top cap positive pole structure.
In one embodiment, the power battery top cover further comprises a negative electrode structure, and the negative electrode structure is insulated from the top cover sheet; the power battery top cover positive electrode structure and the power battery negative electrode structure are respectively arranged at two ends of the top cover piece.
In one embodiment, the negative electrode structure comprises a negative electrode post, and the negative electrode post is formed by punching and forming a copper-aluminum composite coil.
The utility model discloses the beneficial effect who reaches: the positive pole of the utility model has simple structure, and the positive pole can be directly fixed with the top cover plate, so that the sealing performance of the positive pole can be ensured without a sealing ring; moreover, as the pole mounting seat is not provided with the opening (namely the top cover sheet is not provided with the opening), the possibility of leakage of the positive pole can be reduced to zero, and the risk of leakage of the positive pole is avoided. The structure of the application has better reliability and lower cost, and can be produced and used as a universal product. In addition, independently set up between utmost point post of this application and the top cap piece, under the condition of the utmost point post that uses same model, can switch the top cap production of different models, greatly reduced the development cost of different specification top caps and shortened development time. In the structure of this application, because the top cap piece does not set up the trompil, through the anodal utmost point post of top cap piece stopping, the stretching resistance of utmost point post has further been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions 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 an explosion structure diagram of a top cap positive electrode structure of a power battery according to an embodiment of the present invention;
fig. 2 is a schematic longitudinal (i.e., the long-side direction of the top cover sheet) sectional structure of the positive electrode structure of the top cover of the power battery in fig. 1;
fig. 3 is a front structural view of a top cover of a power battery according to an embodiment of the present invention;
fig. 4 is a schematic longitudinal (i.e. the long side direction of the top cover sheet) sectional structure diagram of the top cover of the power battery in fig. 3.
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 upper, lower, left, right, front, back, top and bottom … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
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.
Generally, the casing of the prismatic power battery is mostly an aluminum casing, and if the casing has a low potential and can generate current with the positive electrode, the casing is gradually corroded due to migration of aluminum ions to the positive electrode. Therefore, in actual production, a resistor is often installed between the shell and the anode, so that the potential of the shell is increased, and the purpose of preventing the shell from being corroded slowly is achieved, the structure of the top cover plate of the power battery is rechecked, the production difficulty of the top cover plate is increased, and meanwhile, the production cost of the top cover plate is higher. And, because the anodal department of lamina tecti is provided with the trompil, the risk of taking place anodal utmost point post weeping easily also influences power battery's stability in use easily. Based on this, the utility model provides a power battery top cap anode structure and power battery top cap are in order to solve above-mentioned technical problem.
Specifically, as shown in fig. 1 to fig. 2, on one hand, an embodiment of the present invention provides a power battery top cap positive electrode structure 100 for a square casing battery, including a positive electrode post 10, a top cap piece 20, a lower plastic sheet 30 and a positive electrode connecting sheet 40; the top cover sheet 20 is arranged on the lower plastic sheet 30;
one end of the top cover plate 20 is provided with a pole mounting seat 21 matched with the positive pole 10, and the positive pole 10 is fixedly arranged on the pole mounting seat 21;
a slotted hole 31 matched with the pole mounting seat 21 is formed in one end, close to the pole mounting seat 21, of the lower plastic sheet 30, one side, close to the lower plastic sheet 30, of the pole mounting seat 21 is clamped in the slotted hole 31, and the positive connecting sheet 40 is in contact connection with one side, close to the lower plastic sheet 30, of the pole mounting seat 21;
one side of the lower plastic sheet 30 close to the top cover sheet 20 abuts against the top cover sheet 20.
Specifically, in this embodiment, the pole mounting seat 21 has a concave structure, and the concave structure is adapted to the positive pole 10. The pit structure of this application does not set up the trompil (do not set up the trompil on the top cap piece promptly), can reduce the possibility of anodal utmost point post weeping to zero, has avoided the risk of anodal utmost point post weeping.
It is understood that, in other embodiments, the pole mounting seat 21 may also be a raised structure, and the raised structure is adapted to the positive pole 10. The utility model provides a protruding structure does not set up the trompil (do not set up the trompil on the top cap piece promptly), can reduce the possibility of anodal utmost point post weeping to zero, has avoided the risk of anodal utmost point post weeping.
Specifically, in the present embodiment, the positive electrode pole 10 is fixedly disposed on the pole mounting seat 21 by welding. It is understood that in other embodiments, the positive electrode pole 10 may be fixedly disposed on the pole mounting seat 21 by riveting. Therefore, the positive pole can also ensure the sealing performance between the pole and the top cover plate without a sealing ring.
Specifically, in this embodiment, the positive electrode post 10 is preferably a square post. It is understood that, in other embodiments, the positive electrode pole 10 may also be configured as a circular pole, or configured as a polygonal pole, or configured as an elliptical pole, etc. according to the actual use requirement.
In the present application, the positive electrode connecting sheet may take various shapes as long as its connecting function can be achieved.
In one embodiment, the positive electrode terminal 10 is a terminal formed by punching and molding an aluminum coil.
In one embodiment, the top cover sheet 20 is a top cover sheet made of a conductive material. In this application, power battery's electric current can loop through anodal utmost point post, top cap piece and anodal connection piece and reach the purpose of drawing electric current.
In one embodiment, the prismatic case battery comprises a lithium battery or a sodium battery.
On the other hand, as shown in fig. 3 to fig. 4, another embodiment of the present invention further provides a power battery top cover 200, where the power battery top cover 200 includes the power battery top cover positive electrode structure 100.
In one embodiment, the power battery top cover 200 further comprises a negative electrode structure 300, and the negative electrode structure 300 is insulated from the top cover sheet 20; the positive electrode structure 100 and the negative electrode structure 300 of the power battery top cover are respectively arranged at two ends of the top cover piece 20.
In one embodiment, the negative electrode structure 300 includes a negative electrode post (not shown) formed by stamping a copper-aluminum composite coil. In this application embodiment, the negative pole structure can adopt the structure setting similar with this application power battery top cap positive pole structure, also can adopt other common structure settings.
The positive pole of the utility model has simple structure, and the positive pole is directly fixed with the top cover plate, so that the sealing performance of the positive pole can be ensured without a sealing ring; moreover, as the pole mounting seat is not provided with the opening (namely the top cover sheet is not provided with the opening), the possibility of leakage of the positive pole can be reduced to zero, and the risk of leakage of the positive pole is avoided. The structure of the application has better reliability and lower cost, and can be used as a universal product for production and use. In addition, independently set up between utmost point post of this application and the top cap piece, under the condition of the utmost point post that uses same model, can switch the top cap production of different models, greatly reduced the development cost of different specification top caps and shortened development time. In the structure of this application, because the top cap piece does not set up the trompil, through the anodal utmost point post of top cap piece stopping, the stretching resistance of utmost point post has further been improved.
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 (10)
1. A power battery top cover positive pole structure is used for a square shell battery and is characterized by comprising a positive pole post, a top cover plate, a lower plastic sheet and a positive connecting sheet; the top cover plate is arranged on the lower plastic sheet;
one end of the top cover plate is provided with a pole mounting seat matched with the positive pole, and the positive pole is fixedly arranged on the pole mounting seat;
a slotted hole matched with the pole mounting seat is formed in one end, close to the pole mounting seat, of the lower plastic sheet, one side, close to the lower plastic sheet, of the pole mounting seat is clamped in the slotted hole, and the positive connecting sheet is in contact connection with one side, close to the lower plastic sheet, of the pole mounting seat;
one side of the lower plastic sheet close to the top cover sheet is abutted with the top cover sheet.
2. The power battery top cover positive electrode structure of claim 1, wherein the pole mounting base is a pit structure, and the pit structure is matched with the positive pole.
3. The power battery top cover positive electrode structure of claim 1, wherein the pole mounting base is a raised structure, and the raised structure is matched with the positive pole.
4. The power battery top cover positive electrode structure is characterized in that the positive electrode pole is fixedly arranged on the pole mounting seat in a welding or riveting mode.
5. The power battery top cover positive electrode structure of claim 1, wherein the positive electrode pole is a circular pole, a polygonal pole or an elliptical pole.
6. The positive structure of the top cover of the power battery as claimed in claim 1, wherein the top cover sheet is made of conductive material.
7. The power battery top cover positive electrode structure of claim 1, wherein the positive electrode pole is a pole formed by aluminum coil material through stamping; the prismatic case battery includes a lithium battery or a sodium battery.
8. A power battery top cover, characterized in that, the power battery top cover includes the positive pole structure of any one of claims 1 to 7.
9. The power battery top cover according to claim 8, wherein the power battery top cover further comprises a negative electrode structure, and the negative electrode structure is arranged in an insulated manner with the top cover sheet; the power battery top cover positive electrode structure and the power battery negative electrode structure are respectively arranged at two ends of the top cover piece.
10. The power battery top cap of claim 9, wherein the negative electrode structure comprises a negative electrode post, and the negative electrode post is a post stamped from a coil of copper-aluminum composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220122728.1U CN217589174U (en) | 2022-01-18 | 2022-01-18 | Power battery top cover positive electrode structure and power battery top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220122728.1U CN217589174U (en) | 2022-01-18 | 2022-01-18 | Power battery top cover positive electrode structure and power battery top cover |
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| CN217589174U true CN217589174U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220122728.1U Active CN217589174U (en) | 2022-01-18 | 2022-01-18 | Power battery top cover positive electrode structure and power battery top cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117080634A (en) * | 2023-09-15 | 2023-11-17 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
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2022
- 2022-01-18 CN CN202220122728.1U patent/CN217589174U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117080634A (en) * | 2023-09-15 | 2023-11-17 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
| CN117080634B (en) * | 2023-09-15 | 2023-12-22 | 厦门海辰储能科技股份有限公司 | End cover assembly, energy storage device and electric equipment |
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