Cover plate capable of preventing pole column from rotating, battery cover plate assembly and power battery
By setting an anti-rotation groove on the outer peripheral wall of the pole positioning ring and injection molding it into an upper plastic part, the problem of unstable pole connection was solved, and a stable connection between the pole and the cover plate body was achieved, as well as improved anti-torsion performance, thereby increasing the assembly yield.
Patent Information
- Application Number
- CN202520026702.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-06
AI Technical Summary
In existing power battery cover assemblies, the connection stability between the terminal positioning ring and the upper plastic part is poor, which makes the terminal easy to rotate circumferentially.
A first anti-rotation groove is provided on the outer peripheral wall of the pole positioning ring. Plastic is filled into the anti-rotation groove by injection molding to form an upper plastic part, which increases the contact area between the pole positioning ring and the upper plastic part and achieves a stable connection.
It improves the connection stability between the terminal post and the main body of the cover plate, enhances the torsional resistance of the terminal post, prevents the terminal post from rotating, and improves the assembly yield of the battery cover plate assembly.
Smart Images
Figure CN223797425U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power batteries, and in particular to a cover plate capable of preventing rotation of a pole, a battery cover plate assembly and a power battery. BACKGROUND
[0002] The power battery cover plate assembly is an important component of the power battery. The current power battery cover plate assembly mainly comprises a cover plate, a pole mounted on the cover plate, an upper plastic part for insulating and sealing the pole and the cover plate, a lower plastic part and a sealing ring.
[0003] At present, the top of the cover plate is provided with a pole positioning ring, the pole positioning ring is arranged around the pole and is used for limiting the pole from separating upward from the cover plate, the pole positioning ring and the pole are connected together through the upper plastic part. However, in actual application, the connection stability of the pole positioning ring and the upper plastic part is poor, which causes the pole to easily rotate circumferentially. CONTENT OF THE UTILITY MODEL
[0004] The embodiment of the present application provides a cover plate capable of preventing rotation of a pole and a power battery to solve the problems in the related art, and the technical scheme is as follows:
[0005] In a first aspect, the embodiment of the present application provides a cover plate capable of preventing rotation of a pole, comprising:
[0006] a cover plate body, the cover plate body has a pole mounting hole, the pole mounting hole penetrates the cover plate body upward and downward, and the pole mounting hole is used for inserting a pole; and
[0007] a pole positioning ring, the pole positioning ring is arranged at the top of the cover plate body, the pole positioning ring is arranged around the pole mounting hole, the pole positioning ring is used for limiting the pole from separating upward from the pole mounting hole, and the outer peripheral wall of the pole positioning ring has a first anti-rotation groove, and the first anti-rotation groove is used for being filled by an upper plastic part.
[0008] In an embodiment, the first anti-rotation groove is located on one end of the pole positioning ring connected to the cover plate body.
[0009] In an embodiment, the number of the first anti-rotation grooves is a plurality, and the plurality of first anti-rotation grooves are arranged around the axial center line of the pole positioning ring.
[0010] In an embodiment, the number of the first anti-rotation grooves is a plurality, and the plurality of first anti-rotation grooves are uniformly arranged around the axial center line of the pole positioning ring.
[0011] In an embodiment, the cover plate body and the pole positioning ring are integrally arranged together.
[0012] In one embodiment, the cover plate body and the pole positioning ring are integrally formed.
[0013] In one embodiment, the pole mounting hole comprises:
[0014] a first hole section; and
[0015] a second hole section, the second hole section and the first hole section are arranged one by one from bottom to top along the height direction of the cover plate body, the aperture of the second hole section is smaller than the aperture of the first hole section, a limiting part is formed between the second hole section and the first hole section, the limiting part is used for limiting the pole from being separated downward from the pole mounting hole.
[0016] In one embodiment, the top wall of the limiting part has a positioning groove, the positioning groove is arranged around the axial center line of the pole mounting hole, the positioning groove is used for cooperating with the sealing ring to limit the transverse movement of the sealing ring.
[0017] In a second aspect, the embodiments of the present application provide a battery cover plate assembly comprising the above-mentioned cover plate capable of preventing the pole from rotating.
[0018] In a third aspect, the embodiments of the present application provide a power battery comprising the above-mentioned cover plate capable of preventing the pole from rotating.
[0019] The advantages or beneficial effects of the above technical solutions at least include:
[0020] The cover plate of the utility model, since the outer peripheral wall of the pole positioning ring has the first anti-rotation groove, the plastic is poured between the pole positioning ring, the pole mounting hole and the pole by injection molding during the preparation of the battery cover plate assembly, the plastic forms the upper plastic part after solidification, the pole positioning ring, the connection between the pole positioning ring and the pole and the connection between the pole and the pole mounting hole are covered by the upper plastic part, so as to connect the pole and the cover plate body together, the pole can be reliably installed on the cover plate body, wherein, since the outer peripheral wall of the pole positioning ring has the first anti-rotation groove, the first anti-rotation groove can be filled with the upper plastic part, the contact area between the pole positioning ring and the upper plastic part is increased, the bonding force between the upper plastic part and the cover plate body is increased, the connection between the upper plastic part and the cover plate body is more stable and reliable, the upper plastic part can be effectively prevented from falling off, that is, the connection stability between the pole and the cover plate body is increased, the torsion resistance of the pole is increased, the pole is less likely to rotate, the anti-rotation reliability of the pole is improved, and the assembly yield of the battery cover plate assembly is further ensured.
[0021] The above summary is intended to illustrate only and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. Attached Figure Description
[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.
[0023] Fig. 1 This is a three-dimensional structural diagram of the cover plate of this utility model;
[0024] Fig. 2 This is a cross-sectional view of the cover plate of this utility model.
[0025] Figure Labels
[0026] 1. Cover plate body; 11. Pole post mounting hole; 111. First hole section; 112. Second hole section; 113. Limiting part; 114. Positioning groove; 2. Pole post positioning ring; 21. First anti-rotation groove. Detailed Implementation
[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0028] See Figs. 1-2 In a first aspect, a preferred embodiment of this utility model provides a cover plate that prevents the pole from rotating, comprising:
[0029] Cover plate body 1, cover plate body 1 has pole mounting holes 11, the pole mounting holes 11 penetrate the cover plate body 1 from both the top and bottom, the pole mounting holes 11 are used for pole insertion; and
[0030] The pole positioning ring 2 is located on the top of the cover plate body 1. The pole positioning ring 2 is arranged around the pole mounting hole 11. The pole positioning ring 2 is used to prevent the pole from moving upward and disengaging from the pole mounting hole 11. The outer peripheral wall of the pole positioning ring 2 has a first anti-rotation groove 21. The first anti-rotation groove 21 is configured to be filled by the upper plastic part.
[0031] The utility model discloses a cover plate, because the outer peripheral wall of pole positioning ring 2 has first anti -rotation groove 21, pours in the pole positioning ring 2, pole mounting hole 11 and between the pole through injection moulding mode in the preparation battery cover plate assembly process, the plastic solidification forms the upper plastic piece, utilizes the upper plastic piece and covers pole positioning ring 2, connects pole positioning ring 2 and pole and connects pole and pole mounting hole 11, to connect pole and cover plate main part 1 together, can reliably set up pole on cover plate main part 1, wherein, because the outer peripheral wall of pole positioning ring 2 has first anti -rotation groove 21, first anti -rotation groove 21 can be filled by the upper plastic piece, increase the contact area of pole positioning ring 2 and upper plastic piece, to increase the bonding force of upper plastic piece and cover plate main part 1, make upper plastic piece and cover plate main part 1 connect more stable, reliable, can effectively avoid the upper plastic piece to fall off, that is, increase the connection stability of pole and cover plate main part 1, increase the torsional resistance of pole, make pole more difficult to rotate, improve the anti -rotation reliability of pole, in addition, first anti -rotation groove 21 has the function of preventing the mistake, can guarantee the assembly yield of battery cover plate assembly more.
[0032] In an embodiment, the first anti-rotation groove 21 is located on one end of the pole positioning ring 2 connected to the cover plate main body 1, that is, the first anti-rotation groove 21 is located at the bottom (root) of the pole positioning ring 2. In this way, the connection stability of the upper plastic piece and the pole positioning ring 2 can be increased, and the upper plastic piece is less likely to be warped.
[0033] Of course, in other embodiments, the first anti-rotation groove 21 can also be arranged at the middle or top of the pole positioning ring 2.
[0034] In an embodiment, the number of first anti-rotation grooves 21 is multiple, and the multiple first anti-rotation grooves 21 are arranged around the axial center line of the pole positioning ring 2 to further increase the bonding force of the upper plastic piece and the cover plate main body 1, making the connection of the upper plastic piece and the cover plate main body 1 more stable and reliable, that is, increasing the connection stability of the pole and the cover plate main body 1, further increasing the torsional resistance of the pole, and making the pole less likely to rotate.
[0035] In an embodiment, the number of first anti-rotation grooves 21 is multiple, and the multiple first anti-rotation grooves 21 are arranged around the axial center line of the pole positioning ring 2 to further increase the bonding force of the upper plastic piece and the cover plate main body 1, making the connection of the upper plastic piece and the cover plate main body 1 more stable and reliable, that is, increasing the connection stability of the pole and the cover plate main body 1, further increasing the torsional resistance of the pole, and making the pole less likely to rotate.
[0036] Of course, in other embodiments, the number of first anti-rotation grooves 21 can also be one, and in this case, the first anti-rotation groove 21 is arranged around the axial center line of the pole positioning ring 2.
[0037] In an embodiment, the cover plate body 1 and the pole positioning ring 2 are integrally arranged together, for example, the cover plate body 1 and the pole positioning ring 2 are connected together by welding, so that the cover plate body 1 and the pole positioning ring 2 are connected without connectors, which can simplify the structure and make the connection of the cover plate body 1 and the pole positioning ring 2 more stable and reliable.
[0038] In an embodiment, the cover plate body 1 and the pole positioning ring 2 are integrally formed, that is, the cover plate is an integrally formed structure, which has a simple manufacturing process, can reduce costs, and can simplify the structure and make the connection of the cover plate body 1 and the pole positioning ring 2 more stable and reliable.
[0039] Referring to Fig. 2 In an embodiment, the pole mounting hole 11 includes:
[0040] a first hole section 111; and
[0041] a second hole section 112, the second hole section 112 and the first hole section 111 are arranged one by one from bottom to top along the height direction of the cover plate body 1, the hole diameter of the second hole section 112 is smaller than that of the first hole section 111, and a limiting portion 113 is formed between the second hole section 112 and the first hole section 111, the limiting portion 113 is used to limit the pole from being separated downward from the pole mounting hole 11, so as to reliably mount the pole on the cover plate body 1.
[0042] Referring to Fig. 2 In an embodiment, the top wall of the limiting portion 113 has a positioning groove 114, the positioning groove 114 is arranged around the axial center line of the pole mounting hole 11, and the positioning groove 114 is used to cooperate with the sealing ring to limit the transverse movement of the sealing ring, so as to position the sealing ring and reliably seal the gap between the cover plate body 1 and the pole.
[0043] In an embodiment, the inner peripheral wall of the pole positioning ring 2 has a second anti-rotation groove (not shown in the figure), the second anti-rotation groove is configured to be filled with the upper plastic part, so as to further increase the contact area between the pole positioning ring 2 and the upper plastic part, further increase the bonding force between the upper plastic part and the cover plate body 1, make the connection of the upper plastic part and the cover plate body 1 more stable and reliable, effectively prevent the upper plastic part from falling off, that is, increase the connection stability of the pole and the cover plate body 1, increase the torsional resistance of the pole, make the pole less likely to rotate, and improve the anti-rotation reliability of the pole.
[0044] In an embodiment, the number of the second anti-rotation grooves is multiple, and the multiple second anti-rotation grooves are arranged around the axial center line of the pole positioning ring 2 to further increase the bonding force between the upper plastic part and the cover plate body 1, so that the connection between the upper plastic part and the cover plate body 1 is more stable and reliable.
[0045] In an embodiment, the number of the second anti-rotation grooves is multiple, and the multiple second anti-rotation grooves are arranged around the axial center line of the pole positioning ring 2 to further increase the bonding force between the upper plastic part and the cover plate body 1, so that the connection between the upper plastic part and the cover plate body 1 is more stable and reliable.
[0046] In a second aspect, the utility model provides a battery cover plate assembly which comprises the above-mentioned cover plate capable of preventing the pole from rotating.
[0047] The battery cover plate assembly of the utility model, since the cover plate is used, and the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, during the preparation of the battery cover plate assembly, plastic is poured between the pole positioning ring 2, the pole mounting hole 11 and the poles by injection molding, and the plastic forms the upper plastic part after solidification, the pole positioning ring 2 is covered by the upper plastic part, the pole positioning ring 2 and the poles are connected, and the poles and the pole mounting hole 11 are connected, so that the poles and the cover plate body 1 are connected together, the poles can be reliably arranged on the cover plate body 1, wherein, since the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, the first anti-rotation groove 21 can be filled by the upper plastic part, the bonding force between the upper plastic part and the cover plate body 1 is increased, the connection between the upper plastic part and the cover plate body 1 is more stable and reliable, that is, the connection stability of the poles and the cover plate body 1 is increased, the torsion resistance of the poles is increased, the poles are less likely to rotate, and the anti-rotation reliability of the poles is improved; in addition, the first anti-rotation groove 21 has a foolproof function, and the assembly yield of the battery cover plate assembly can be better ensured.
[0048] In a third aspect, the utility model provides a power battery which comprises the above-mentioned cover plate capable of preventing the pole from rotating.
[0049] The utility model discloses a power battery, because of adopting the above -mentioned cover plate, also because the outer peripheral wall of pole positioning ring 2 has first anti -rotation groove 21, in the preparation battery cover plate subassembly process, the plastic is poured through injection molding mode between pole positioning ring 2, pole mounting hole 11 and pole, and the plastic solidification forms the upper plastic piece, utilizes the upper plastic piece and covers pole positioning ring 2, connects pole positioning ring 2 and pole and connects pole and pole mounting hole 11, to connect pole and cover plate main body 1 together, can reliably set up pole on cover plate main body 1, wherein, because the outer peripheral wall of pole positioning ring 2 has first anti -rotation groove 21, first anti -rotation groove 21 can be filled by the upper plastic piece, increase the bonding force of upper plastic piece and cover plate main body 1, make upper plastic piece and cover plate main body 1 connect more stable, reliable, that is, increase the connection stability of pole and cover plate main body 1, increase the torsional resistance of pole, make pole more difficult to rotate, improve the anti -rotation reliability of pole, in addition, first anti -rotation groove 21 has the foolproof function, can guarantee the assembly yield of battery cover plate subassembly more.
[0050] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means 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 application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0051] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one feature. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0052] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A cover plate which prevents rotation of the pole, characterized by, include: The cover plate body has pole mounting holes, which penetrate the cover plate body from both the top and bottom, and are used for pole insertion. as well as A pole positioning ring is provided on the top of the cover plate body. The pole positioning ring is arranged around the pole mounting hole. The pole positioning ring is used to prevent the pole from moving upward and disengaging from the pole mounting hole. The outer peripheral wall of the pole positioning ring has a first anti-rotation groove, which is configured to be filled by an upper plastic part.
2. The cap plate of claim 1, wherein, The first anti-rotation groove is located at one end of the pole positioning ring that connects to the cover plate body.
3. The cap plate of claim 1, wherein, There are multiple first anti-rotation grooves, which are arranged at intervals around the axial center line of the pole positioning ring.
4. The cap of claim 1, wherein There are multiple first anti-rotation grooves, and the multiple first anti-rotation grooves are evenly arranged around the axial center line of the pole positioning ring.
5. The cap of claim 1, wherein The cover plate body and the pole positioning ring are integrally formed together.
6. The cap plate of claim 5, wherein, The cover plate body and the pole positioning ring are integrally formed.
7. The cap of claim 1, wherein The pole mounting hole includes: First borehole section; and The second hole segment and the first hole segment are arranged one after another from bottom to top along the height direction of the cover plate body. The diameter of the second hole segment is smaller than that of the first hole segment. A limiting part is formed between the second hole segment and the first hole segment. The limiting part is used to prevent the pole post from disengaging from the pole post mounting hole downwards.
8. The cap plate of claim 7, wherein, The top wall of the limiting part has a positioning groove, which is arranged around the axial center line of the pole mounting hole. The positioning groove is used to cooperate with the sealing ring to limit the lateral movement of the sealing ring.
9. A battery cover plate assembly characterized by, Includes the cover plate that prevents pole rotation as described in any one of claims 1-8.
10. A power cell, characterized by Includes the cover plate that prevents pole rotation as described in any one of claims 1-8.