Anti-seepage power battery cover plate structure

Abstract

The utility model belongs to the technical field of new energy batteries, and particularly discloses an anti-seepage power battery cover plate structure which comprises a smooth aluminum sheet, mounting grooves are formed in the two ends of the top surface of the smooth aluminum sheet, and first pole connecting holes are formed in the bottoms of the mounting grooves; the upper sealing ring is arranged in the pole connecting hole I in a matching manner; and the exterior of the pole is provided with upper plastic cement, the upper plastic cement is placed in the mounting groove in a matched manner, and the bottom of the upper plastic cement is provided with a pole connecting hole II communicated with the pole connecting hole I. According to the anti-seepage power battery cover plate structure provided by the utility model, a closed sealing structure is formed among the upper plastic, the upper sealing ring and the lower sealing ring, and the upper plastic is arranged outside the pole column in an injection molding manner, so that sealing is formed between the upper plastic and the smooth aluminum sheet as well as between the pole column and the upper plastic, and seepage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy batteries, and particularly relates to a power battery cover plate structure with anti-leakage liquid. Background Art

[0002] The battery cover plate is mainly used to protect the battery core, prevent the leakage of chemical substances inside the battery, and avoid the influence of the external environment on the battery. It is an important component of battery packaging and an important part of new energy batteries.

[0003] At present, in the process of battery manufacturing, in the process of liquid injection and cleaning of the traditional cover plate structure, the cleaning water or electrolyte liquid will penetrate between the upper plastic and the pole column, thus forming a path, resulting in problems such as battery short circuit or poor shell pressure. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above problems existing in the prior art, and provide a power battery cover plate structure with anti-leakage liquid. A closed sealing structure is formed among the upper plastic, the upper sealing ring and the lower sealing ring. The upper plastic is arranged outside the pole column by injection molding, so as to ensure the sealing between the upper plastic and the light aluminum sheet and between the pole column and the upper plastic, and avoid liquid leakage.

[0005] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0006] A power battery cover plate structure with anti-leakage liquid, comprising:

[0007] A light aluminum sheet, both ends of the top surface of the light aluminum sheet are provided with installation grooves, and a pole column connection hole one is opened at the bottom of the installation groove;

[0008] An upper sealing ring, which is placed in the pole column connection hole one in a matching manner;

[0009] A pole column, an upper plastic is arranged outside the pole column, the upper plastic is placed in the installation groove in a matching manner, and a pole column connection hole two communicated with the pole column connection hole one is opened at the bottom of the upper plastic;

[0010] A lower plastic, both ends of the top surface of the lower plastic are provided with pole column connection holes three, a lower sealing ring is arranged in the pole column connection holes three, and the top of the lower sealing ring is in close contact with the upper sealing ring;

[0011] A connecting piece, a connecting end is arranged at the top of the connecting piece, and the top of the connecting end is connected with the pole column.

[0012] Furthermore, the upper plastic is formed outside the pole column by injection molding.

[0013] Further, an annular boss one protrudes upward from the inner edge of the top of the lower sealing ring, and the annular boss one is located in the pole connection hole one;

[0014] The bottom of the lower sealing ring is in close contact with the connecting piece;

[0015] The top of the annular boss one is in close contact with the upper sealing ring.

[0016] Further, an annular boss two protrudes upward from the inner edge of the top of the upper sealing ring, and the top of the annular boss two is in close contact with the pole;

[0017] A stepped sealing area is formed between the outer side of the annular boss two and the outer side of the upper sealing ring;

[0018] An annular boss three is integrally formed at the upper end of the inner surface of the pole connection hole two, and the annular boss three is closely placed in the stepped sealing area.

[0019] Further, an annular boss four protrudes downward from the inner edge of the bottom of the upper sealing ring;

[0020] The annular boss four is located in the pole connection hole one, and the bottom of the annular boss four is in close contact with the lower sealing ring.

[0021] Further, the connecting end is connected to the pole by a welding connection method.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. The present utility model provides a power battery cover plate structure with anti-leakage liquid. A closed sealing structure is formed among the upper plastic, the upper sealing ring and the lower sealing ring. Therefore, the sealing performance between the upper plastic and the light aluminum sheet can be ensured, and the liquid infiltration during the liquid injection and cleaning processes can be prevented.

[0024] 2. In the present utility model, the upper plastic is arranged outside the pole by an injection molding method, so as to ensure the formation of a seal between the pole and the upper plastic and avoid liquid leakage.

[0025] 3. In the present utility model, through the design of the structures of the upper plastic, the upper sealing ring and the lower sealing ring, the connection among the upper plastic, the upper sealing ring and the lower sealing ring is tight and the sealing is good. Description of the Drawings

[0026] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0027] Figure 1is a schematic structural view of the present utility model;

[0028] Figure 2 is an exploded view of the partial structure of the present utility model;

[0029] Figure 3 is a schematic structural view of the connecting piece of the present utility model;

[0030] Figure 4 is a schematic structural view of the lower sealing ring of the present utility model;

[0031] Figure 5 is a schematic structural view of the upper sealing ring of the present utility model;

[0032] Figure 6 is a schematic structural view of the upper plastic of the present utility model;

[0033] Figure 7 is a schematic structural view of the bottom of the upper sealing ring of the present utility model;

[0034] Figure 8 is a partial structural sectional view of the present utility model.

[0035] Among them, the reference numerals are: 1, pole; 2, upper plastic; 3, upper sealing ring; 4, light aluminum sheet; 5, lower sealing ring; 6, lower plastic; 7, connecting piece; 40, installation groove; 401, first pole connection hole; 20, second pole connection hole; 60, third pole connection hole; 70, connection end; 50, first annular boss; 30, second annular boss; 201, third annular boss; 10, fourth annular boss. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0038] Such as Figures 1 to 3As shown in the figure, a power battery cover plate structure for anti-seepage liquid includes a pole column 1, an upper plastic 2, an upper sealing ring 3, a light aluminum sheet 4, a lower sealing ring 5, a lower plastic 6, and a connecting piece 7;

[0039] Among them, the upper plastic 2 is formed on the outside of the pole column 1 by injection molding;

[0040] The top of the connecting piece 7 is provided with a connecting end 70, and the other end of the connecting end 70 is connected to the pole column 1 by a welding connection method;

[0041] Installation grooves 40 are opened at both ends of the top surface of the light aluminum sheet 4, and the upper plastic 2 is placed in the installation grooves 40 in a matching manner;

[0042] A first pole column connection hole 401 is opened at the bottom of the installation groove 40, and a second pole column connection hole 20 communicating with the first pole column connection hole 401 is opened at the bottom of the upper plastic 2;

[0043] The upper sealing ring 3 is placed in the first pole column connection hole 401 in a matching manner;

[0044] Third pole column connection holes 60 are opened at both ends of the top surface of the lower plastic 6, a lower sealing ring 5 is arranged in the third pole column connection holes 60, and the top of the lower sealing ring 5 is in close contact with the upper sealing ring 3.

[0045] As Figure 4 shown, an annular boss one 50 protrudes upward from the inner edge of the top of the lower sealing ring 5, and the annular boss one 50 is located in the first pole column connection hole 401; the annular boss one 50 is integrally formed with the lower sealing ring 5, the annular boss one 50 is located in the first pole column connection hole 401, and the lower sealing ring 5 is located in the third pole column connection hole 60;

[0046] The bottom of the lower sealing ring 5 is in close contact with the connecting piece 7;

[0047] The top of the annular boss one 50 is in close contact with the upper sealing ring 3;

[0048] This setting ensures the sealing performance among the lower sealing ring 5, the connecting piece 7, and the upper sealing ring 3.

[0049] As Figures 5 to 6 shown, an annular boss two 30 protrudes upward from the inner edge of the top of the upper sealing ring 3, and the top of the annular boss two 30 is in close contact with the pole column 1;

[0050] A stepped sealing area is formed between the outside of the annular boss two 30 and the outside of the upper sealing ring 3;

[0051] An annular boss three 201 is integrally formed at the upper end of the inner surface of the second pole column connection hole 20, and the annular boss three 201 is closely placed in the stepped sealing area.

[0052] As Figures 7 to 8As shown in the figure, an annular boss four 10 protrudes downward from the inner edge of the bottom of the upper sealing ring 3;

[0053] The annular boss four 10 is located in the pole connection hole one 401, and the bottom of the annular boss four 10 is in close contact with the lower sealing ring 5. Specifically, the bottom of the annular boss four 10 is in close contact with the annular boss one 50 on the lower sealing ring 5;

[0054] Due to the design of the annular boss two 30 and the annular boss three 201 on the upper sealing ring 3, the other end of the annular boss four 10 is in close contact with the annular boss one 50, the other end of the annular boss two 30 is in close contact with the pole 1, and the annular boss three 201 on the pole connection hole two 20 at the bottom of the upper plastic 2 is closely placed in the stepped sealing area. Therefore, a combined seal between the pole 1, the upper plastic 2, the upper sealing ring 3, the lower sealing ring 5, and the connecting piece 7 is achieved, improving the sealing performance.

[0055] A leak-proof power battery cover structure provided by the present utility model has the following assembly process:

[0056] S1: Integrate the pole 1 and the upper plastic 2 by injection molding to form an integrated pole;

[0057] S2: Assemble the upper sealing ring 3 into the pole connection hole one 401 on the light aluminum sheet 4;

[0058] S3: Assemble the integrated pole into the installation groove 40 on the light aluminum sheet 4, and the integrated pole is located above the upper sealing ring 3;

[0059] S4: Assemble the lower sealing ring 5 to the lower end inside the pole connection hole one 401 on the light aluminum sheet 4;

[0060] S5: Assemble the lower plastic 6 to the bottom of the light aluminum sheet 4;

[0061] S6: Assemble the connecting piece 7 with the lower plastic 6, that is, assemble the connecting piece 7 below the lower plastic 6. Among them, during assembly, the connecting end 70 on the connecting piece 7 is located in the pole connection hole three 60 of the lower plastic 6;

[0062] S7: Compress the upper sealing ring 3 and the lower sealing ring 5 to tightly fix the pole 1, the upper plastic 2, the upper sealing ring 3, the lower sealing ring 5, and the connecting piece 7, and then fix the connecting piece 7 and the pole 1 by welding.

[0063] The present utility model provides a leak-proof power battery cover structure. A closed sealing structure is formed between the upper plastic, the upper sealing ring, and the lower sealing ring. The upper plastic is arranged outside the pole by injection molding, thereby ensuring seals are formed between the upper plastic and the light aluminum sheet, and between the pole and the upper plastic, avoiding liquid leakage.

[0064] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A power battery cover structure with anti-seepage liquid, characterized in that Including: A light aluminum sheet (4), both ends of the top surface of the light aluminum sheet (4) are provided with mounting grooves (40), and a first pole connection hole (401) is provided at the bottom of the mounting groove (40); An upper sealing ring (3), which is placed in the first pole connection hole (401) in a matching manner; A pole (1), an upper plastic (2) is provided on the outside of the pole (1), the upper plastic (2) is placed in the mounting groove (40) in a matching manner, and a second pole connection hole (20) communicating with the first pole connection hole (401) is provided at the bottom of the upper plastic (2); A lower plastic (6), both ends of the top surface of the lower plastic (6) are provided with third pole connection holes (60), a lower sealing ring (5) is provided in the third pole connection holes (60), and the top of the lower sealing ring (5) is in close contact with the upper sealing ring (3); A connecting piece (7), a connecting end (70) is provided at the top of the connecting piece (7), and the top of the connecting end (70) is connected to the pole (1).

2. The power battery cover plate structure for anti-seepage liquid according to claim 1, characterized in that The upper plastic (2) is formed by injection molding on the outside of the pole (1).

3. The power battery cover plate structure for anti-seepage liquid according to claim 1, characterized in that An annular boss one (50) protrudes upward from the inner edge of the top of the lower sealing ring (5), and the annular boss one (50) is located in the first pole connection hole (401); The bottom of the lower sealing ring (5) is in close contact with the connecting piece (7); The top of the annular boss one (50) is in close contact with the upper sealing ring (3).

4. The power battery cover plate structure of an anti-seepage liquid according to claim 1, characterized in that, An annular boss two (30) protrudes upward from the inner edge of the top of the upper sealing ring (3), and the top of the annular boss two (30) is in close contact with the pole (1); A stepped sealing area is formed between the outside of the annular boss two (30) and the outside of the upper sealing ring (3); An annular boss three (201) is integrally formed at the upper end of the inner surface of the second pole connection hole (20), and the annular boss three (201) is closely placed in the stepped sealing area.

5. The power battery cover plate structure of an anti-seepage liquid according to claim 1, characterized in that An annular boss four (10) protrudes downward from the inner edge of the bottom of the upper sealing ring (3); The annular boss four (10) is located in the first pole connection hole (401), and the bottom of the annular boss four (10) is in close contact with the lower sealing ring (5).

6. The power battery cover plate structure for anti-seepage liquid according to claim 1, wherein The connecting end (70) is connected to the pole (1) by a welding connection method.

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