Cover plate capable of preventing pole from rotating, battery cover plate assembly and power battery

Abstract

The present application proposes a cover plate, a battery cover plate assembly and a power battery that can prevent the pole from rotating, including: a cover plate body, the cover plate body having a pole mounting hole, the pole mounting hole penetrates the cover plate body from top to bottom, and the pole mounting hole is used for inserting the pole; and 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 to limit the pole from upwardly disengaging 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 configured to be filled with an upper plastic part. 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, which increases the bonding force between the upper plastic part and the cover plate body, making the connection between the upper plastic part and the cover plate body more stable and reliable, that is, increasing the connection stability of the pole and the cover plate body, increasing the torsional performance of the pole, making the pole less likely to rotate, and improving the anti-rotation reliability of the pole.

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 a pole from rotating, a battery cover plate assembly, and a power battery. Background Art

[0002] The power battery cover plate assembly is an important component of the power battery. The current power battery cover plate assembly mainly includes a cover plate, a pole mounted on the cover plate, an upper plastic part that insulates and seals the pole and the cover plate, a lower plastic part, and a sealing ring.

[0003] At present, a pole positioning ring is arranged on the top of the cover plate. The pole positioning ring is arranged around the pole and is used to limit the pole from detaching upward from the cover plate. The pole positioning ring and the pole are connected together by an upper plastic part. However, in actual application, the connection stability between the pole positioning ring and the upper plastic part is poor, which makes the pole easy to rotate circumferentially. Summary of the invention

[0004] The embodiment of the present application provides a cover plate and a power battery capable of preventing a pole from rotating, so as to solve the problems existing in the related art. The technical solution is as follows:

[0005] In a first aspect, an embodiment of the present application provides a cover plate capable of preventing a pole from rotating, comprising:

[0006] A cover plate body, wherein the cover plate body has a pole mounting hole, the pole mounting hole penetrates the cover plate body both from top to bottom, and the pole mounting hole is used for inserting the pole; and

[0007] A pole positioning ring is arranged 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 limit the pole from escaping 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 configured to be filled with an upper plastic part.

[0008] In one embodiment, the first anti-rotation groove is located on one end of the pole positioning ring connected to the cover plate body.

[0009] In one embodiment, there are a plurality of the first anti-rotation grooves, and the plurality of the first anti-rotation grooves are arranged at intervals around the axial center line of the pole positioning ring.

[0010] In one embodiment, there are a plurality of the first anti-rotation grooves, and the plurality of the first anti-rotation grooves are evenly arranged around the axial center line of the pole locating ring.

[0011] In one embodiment, the cover plate body and the pole locating ring are integrally provided 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 bore section; and

[0015] A second hole segment, the second hole segment and the first hole segment are arranged one by one from bottom to top along the height direction of the cover plate body, the hole diameter of the second hole segment is smaller than the hole diameter of the first hole segment, and a limiting portion is formed between the second hole segment and the first hole segment, and the limiting portion is used to limit the pole from escaping downward from the pole mounting hole.

[0016] In one embodiment, the top wall of the limiting portion has a positioning groove, the positioning groove is arranged around the axial center line of the pole mounting hole, and the positioning groove is used to cooperate with the sealing ring to limit the lateral movement of the sealing ring.

[0017] In a second aspect, an embodiment of the present application provides a battery cover assembly, comprising the above-mentioned cover capable of preventing the pole from rotating.

[0018] In a third aspect, an embodiment of the present application provides 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 solution include at least:

[0020] The cover plate of the present invention has a first anti-rotation groove on the outer peripheral wall of the pole positioning ring. In the process of preparing the battery cover plate assembly, plastic is poured between the pole positioning ring, the pole mounting hole and the pole by injection molding. After the plastic solidifies, an upper plastic part is formed. The upper plastic part is used to cover the pole positioning ring, connect the pole positioning ring and the pole, and connect the pole and the pole mounting hole to connect the pole and the cover plate body together, so that the pole can be reliably installed on the cover plate body. The first anti-rotation groove can be filled with the upper plastic part, increasing the contact area between the pole positioning ring and the upper plastic part, so as to increase the bonding force between the upper plastic part and the cover body, making the connection between the upper plastic part and the cover body more stable and reliable, and can effectively prevent the upper plastic part from falling off, that is, increasing the connection stability between the pole and the cover body, increasing the torsion resistance of the pole, making the pole less likely to rotate, and improving the anti-rotation reliability of the pole; in addition, the first anti-rotation groove has an anti-fool effect, which can better ensure the assembly yield of the battery cover assembly.

[0021] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the cover plate of the present invention;

[0024] Figure 2 It is a cross-sectional view of the cover plate of the present invention.

[0025] Reference numerals

[0026] 1. Cover plate body; 11. Pole mounting hole; 111. First hole section; 112. Second hole section; 113. Positioning portion; 114. Positioning groove; 2. Pole positioning ring; 21. First anti-rotation groove. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] See also Figure 1-Figure 2 In the first aspect, a preferred embodiment of the present invention provides a cover plate capable of preventing a pole from rotating, comprising:

[0029] A cover plate body 1, the cover plate body 1 having a pole mounting hole 11, the pole mounting hole 11 penetrates the cover plate body 1 both up and down, and the pole mounting hole 11 is used for inserting the pole; and

[0030] The pole positioning ring 2 is arranged on the top of the cover body 1, and the pole positioning ring 2 is arranged around the pole mounting hole 11. The pole positioning ring 2 is used to limit the pole from escaping from the pole mounting hole 11 upward. The outer peripheral wall of the pole positioning ring 2 has a first anti-rotation groove 21, and the first anti-rotation groove 21 is configured to be filled with the upper plastic part.

[0031] In the cover of the present invention, since the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, in the process of preparing the battery cover assembly, plastic is poured between the pole positioning ring 2, the pole mounting hole 11 and the pole by injection molding, and the plastic is solidified to form an upper plastic part, and the upper plastic part is used to cover the pole positioning ring 2, connect the pole positioning ring 2 and the pole, and connect the pole and the pole mounting hole 11, so as to connect the pole and the cover body 1 together, and the pole can be reliably installed on the cover body 1, wherein, since the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, the pole positioning ring 2 can be connected to the pole and the pole mounting hole 11, and the pole can be connected to the pole and the cover body 1. The rotation groove 21, the first anti-rotation groove 21 can be filled with the upper plastic part, which increases the contact area between the pole positioning ring 2 and the upper plastic part, so as to increase the bonding force between the upper plastic part and the cover body 1, making the connection between the upper plastic part and the cover body 1 more stable and reliable, and can effectively prevent the upper plastic part from falling off, that is, increasing the connection stability between the pole and the cover body 1, increasing the torsion resistance of the pole, making the pole less likely to rotate, and improving the anti-rotation reliability of the pole; in addition, the first anti-rotation groove 21 has an anti-fool effect, which can better ensure the assembly yield of the battery cover assembly.

[0032] In one embodiment, the first anti-rotation groove 21 is located on one end of the pole positioning ring 2 connected to the cover plate 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 between the upper plastic part and the pole positioning ring 2 can be increased, making the upper plastic part less likely to warp.

[0033] Of course, in other embodiments, the first anti-rotation groove 21 may also be provided in the middle of the pole positioning ring 2 , or may also be provided at the top of the pole positioning ring 2 .

[0034] In one embodiment, there are multiple first anti-rotation grooves 21, and the multiple first anti-rotation grooves 21 are arranged at intervals 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 body 1, so that the connection between the upper plastic part and the cover body 1 is more stable and reliable, that is, the connection stability between the pole and the cover body 1 is increased, and the torsional resistance of the pole is further increased, making the pole less likely to rotate.

[0035] In one embodiment, there are multiple first anti-rotation grooves 21, and the multiple first anti-rotation grooves 21 are evenly 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 body 1, so that the connection between the upper plastic part and the cover body 1 is more stable and reliable, that is, the connection stability between the pole and the cover body 1 is increased, and the torsional resistance of the pole is further increased. At the same time, the force on the pole is more uniform, so that the pole is less likely to rotate.

[0036] Of course, in other embodiments, the number of the first anti-rotation groove 21 may also be one. In this case, the first anti-rotation groove 21 is arranged around the axial center line of the pole locating ring 2 .

[0037] In one 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 a connector, which can simplify the structure and make the connection between the cover plate body 1 and the pole positioning ring 2 more stable and reliable.

[0038] In one embodiment, the cover plate body 1 and the pole locating ring 2 are integrally formed, that is, the cover plate is an integrally formed structure. The preparation process of the cover plate is simple, which can reduce costs. At the same time, the cover plate body 1 and the pole locating ring 2 are connected without connecting parts, which can simplify the structure and make the connection between the cover plate body 1 and the pole locating ring 2 more stable and reliable.

[0039] See also Figure 2 In one embodiment, the pole mounting hole 11 includes:

[0040] A first hole section 111; and

[0041] The 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 aperture of the second hole section 112 is smaller than the aperture 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, and the limiting portion 113 is used to limit the pole from being separated downward from the pole mounting hole 11, so as to realize the reliable installation of the pole on the cover plate body 1.

[0042] See also Figure 2 In one embodiment, the top wall of the limiting portion 113 has a positioning groove 114, and the positioning groove 114 is arranged around the axial center line of the pole mounting hole 11. The positioning groove 114 is used to cooperate with the sealing ring to limit the lateral movement of the sealing ring, and can play a positioning role for the sealing ring, so that the positioning ring can reliably seal the gap between the cover plate body 1 and the pole.

[0043] In one embodiment, the inner peripheral wall of the pole positioning ring 2 has a second anti-rotation groove (not shown in the figure), and the second anti-rotation groove is configured to be filled with the upper plastic part to further increase the contact area between the pole positioning ring 2 and the upper plastic part, thereby further increasing the bonding force between the upper plastic part and the cover plate body 1, making the connection between the upper plastic part and the cover plate body 1 more stable and reliable, and being able to effectively prevent the upper plastic part from falling off, that is, increasing the connection stability between the pole and the cover plate body 1, increasing the torsional resistance of the pole, making the pole less likely to rotate, and improving the anti-rotation reliability of the pole.

[0044] In one embodiment, there are multiple second anti-rotation grooves, which are arranged at intervals 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 body 1, making the connection between the upper plastic part and the cover body 1 more stable and reliable.

[0045] In one embodiment, there are multiple second anti-rotation grooves, which are evenly 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 body 1, making the connection between the upper plastic part and the cover body 1 more stable and reliable.

[0046] In a second aspect, a preferred embodiment of the present invention provides a battery cover assembly, including the above-mentioned cover capable of preventing the pole from rotating.

[0047] The battery cover assembly of the present invention adopts the above-mentioned cover, and also because the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, in the process of preparing the battery cover assembly, plastic is poured between the pole positioning ring 2, the pole mounting hole 11 and the pole by injection molding, and the plastic is solidified to form an upper plastic part, and the upper plastic part is used to cover the pole positioning ring 2, connect the pole positioning ring 2 and the pole, and connect the pole and the pole mounting hole 11, so as to connect the pole and the cover body 1 together, so that the pole can be reliably installed on the cover On the main body 1, since the outer wall of the pole positioning ring 2 has a first anti-rotation groove 21, the first anti-rotation groove 21 can be filled with the upper plastic part, which increases the bonding force between the upper plastic part and the cover body 1, making the connection between the upper plastic part and the cover body 1 more stable and reliable, that is, the connection stability between the pole and the cover body 1 is increased, the torsion resistance of the pole is increased, the pole is less likely to rotate, and the anti-rotation reliability of the pole is improved; in addition, the first anti-rotation groove 21 has an anti-fool effect, which can better ensure the assembly yield of the battery cover assembly.

[0048] In a third aspect, a preferred embodiment of the present invention provides a power battery, comprising the above-mentioned cover plate capable of preventing the pole from rotating.

[0049] The power battery of the present invention adopts the above-mentioned cover plate, and also because the outer peripheral wall of the pole positioning ring 2 has the first anti-rotation groove 21, in the process of preparing the battery cover plate assembly, the plastic is poured between the pole positioning ring 2, the pole mounting hole 11 and the pole by injection molding, and the plastic is solidified to form an upper plastic part, and the upper plastic part is used to cover the pole positioning ring 2, connect the pole positioning ring 2 and the pole, and connect the pole and the pole mounting hole 11, so as to connect the pole and the cover plate body 1 together, so that the pole can be reliably installed on the cover plate body On the body 1, among which, since the outer peripheral wall of the pole positioning ring 2 has a first anti-rotation groove 21, the first anti-rotation groove 21 can be filled with the upper plastic part, which increases the bonding force between the upper plastic part and the cover body 1, making the connection between the upper plastic part and the cover body 1 more stable and reliable, that is, the connection stability between the pole and the cover body 1 is increased, the torsion resistance of the pole is increased, the pole is less likely to rotate, and the anti-rotation reliability of the pole is improved; in addition, the first anti-rotation groove 21 has an anti-fool effect, which can better ensure the assembly yield of the battery cover assembly.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A cover plate capable of preventing the pole from rotating, characterized in that: include: A cover plate body, wherein the cover plate body has a pole mounting hole, the pole mounting hole penetrates the cover plate body from top to bottom, and the pole mounting hole is used for inserting the pole; as well as A pole positioning ring is arranged 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 limit the pole from escaping 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 configured to be filled with an upper plastic part.

2. The cover plate capable of preventing the pole from rotating according to claim 1, characterized in that: The first anti-rotation groove is located on one end of the pole positioning ring connected to the cover plate body.

3. The cover plate capable of preventing the pole from rotating according to claim 1, characterized in that: There are multiple first anti-rotation grooves, and the multiple first anti-rotation grooves are arranged at intervals around the axial center line of the pole positioning ring.

4. The cover plate capable of preventing the pole from rotating according to claim 1, characterized in that: 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 cover plate capable of preventing the pole from rotating according to claim 1, characterized in that: The cover plate body and the pole positioning ring are integrally arranged together.

6. The cover plate capable of preventing the pole from rotating according to claim 5, characterized in that: The cover plate body and the pole positioning ring are integrally formed.

7. The cover plate capable of preventing the pole from rotating according to claim 1, characterized in that: The pole mounting hole comprises: a first bore section; and A second hole segment, the second hole segment and the first hole segment are arranged one by one from bottom to top along the height direction of the cover plate body, the hole diameter of the second hole segment is smaller than the hole diameter of the first hole segment, and a limiting portion is formed between the second hole segment and the first hole segment, and the limiting portion is used to limit the pole from escaping downward from the pole mounting hole.

8. The cover plate capable of preventing the pole from rotating according to claim 7, characterized in that: The top wall of the limiting portion has a positioning groove, the positioning groove is arranged around the axial center line of the pole mounting hole, and the positioning groove is used to cooperate with the sealing ring to limit the lateral movement of the sealing ring.

9. A battery cover assembly, characterized in that: The invention comprises a cover plate capable of preventing the pole from rotating as claimed in any one of claims 1 to 8.

10. A power battery, characterized in that: The invention comprises a cover plate capable of preventing the pole from rotating as claimed in any one of claims 1 to 8.

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