Top cover assembly and single battery

Abstract

The utility model discloses a top cover assembly and a single battery, and belongs to the technical field of batteries. The top cover assembly comprises a top cover and a pole. A first mounting hole is formed in the top cover, and a first limiting part is arranged on the hole wall of the first mounting hole; the pole is arranged in the first mounting hole and is provided with a second limiting part matched with the first limiting part; according to the top cover assembly provided by the invention, the first limiting part is arranged on the hole wall of the first mounting hole, and the second limiting part matched with the first limiting part is arranged on the pole, so that a limiting effect is achieved under the matching of the first limiting part and the second limiting part, and the pole is prevented from rotating relative to the mounting hole; therefore, the torsion resistance of the pole is effectively improved, the probability that the pole is loosened or separated from the mounting hole in the process of screwing the pole with external equipment is reduced, and the stability and the reliability of electric connection between the single battery and the external equipment through the pole are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a top cover assembly and a single battery. Background Art

[0002] Currently, a pole mounting hole is usually provided on the top cover of a single battery, and the pole mounting hole is used to install the pole.

[0003] However, most existing poles are fixed in the mounting hole by interference fit or threaded connection with the hole wall, resulting in poor torsional resistance of the pole, which makes the pole easy to loosen or detach from the mounting hole during the process of screw connection with external equipment, affecting the stability and reliability of the electrical connection. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a top cover assembly to solve the technical problem that the pole in the prior art has poor torsional resistance, which causes the pole to easily loosen or detach from the mounting hole during the process of screwing with the external equipment, affecting the stability and reliability of the electrical connection.

[0005] To solve the above technical problems, this application provides:

[0006] A top cover assembly, comprising:

[0007] A top cover, wherein the top cover is provided with a first mounting hole, and a first limiting portion is provided on a hole wall of the first mounting hole;

[0008] The pole is arranged in the first mounting hole, and the pole is provided with a second limiting portion that matches the first limiting portion.

[0009] In addition, the top cover assembly according to the present application may also have the following additional technical features:

[0010] In some embodiments of the present application, the first limiting portion is a limiting protrusion, the second limiting portion is a limiting groove matching the limiting protrusion, the limiting protrusion is arranged along the axial extension of the first mounting hole, and the limiting groove is opened along the axial extension of the pole.

[0011] In some embodiments of the present application, the first limiting portion is a limiting groove, the second limiting portion is a limiting protrusion that cooperates with the limiting groove, the limiting groove is opened along the axial extension of the first mounting hole, and the limiting protrusion is set along the axial extension of the pole.

[0012] In some embodiments of the present application, a plurality of the first limiting portions and a plurality of the second limiting portions are provided, the plurality of the first limiting portions are spaced apart along the inner circumference of the first mounting hole, the plurality of the second limiting portions are spaced apart along the outer circumference of the pole, and the plurality of the first limiting portions and the plurality of the second limiting portions are provided in a one-to-one correspondence.

[0013] In some embodiments of the present application, a third limiting portion is provided on the hole wall of the first mounting hole, and one end of the pole abuts against the third limiting portion.

[0014] In some embodiments of the present application, a fourth limiting portion is provided on the hole wall of the first mounting hole at one end away from the third limiting portion, and the end of the pole away from the third limiting portion abuts against the fourth limiting portion.

[0015] In some embodiments of the present application, the top cover assembly also includes an explosion-proof valve, the outer side of the explosion-proof valve is provided with an external thread, the top cover is provided with a second mounting hole, and the hole wall of the second mounting hole is provided with an internal thread that matches the external thread.

[0016] In some embodiments of the present application, the top cover is made of plastic material and is integrally injection-molded with the pole.

[0017] In some embodiments of the present application, the thickness of the top cover is 3 to 30 mm.

[0018] In a second aspect, the present application also provides a single cell battery comprising the top cover assembly described in any of the above embodiments.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] The present application proposes a top cover assembly and a single cell battery. The top cover assembly includes a top cover and a pole. The top cover is provided with a first mounting hole. A first limiting portion is provided on the wall of the first mounting hole. The pole is provided in the first mounting hole. The pole is provided with a second limiting portion that cooperates with the first limiting portion. By providing the first limiting portion on the wall of the first mounting hole and providing the second limiting portion on the pole to cooperate with the first limiting portion, the first limiting portion and the second limiting portion cooperate to play a limiting role, thereby limiting the rotation of the pole relative to the mounting hole. This effectively improves the torsional resistance of the pole, reduces the probability of the pole loosening or detaching from the mounting hole during screw connection with external equipment, and ensures the stability and reliability of the electrical connection between the single cell battery and the external equipment through the pole. This avoids the technical problem in the prior art that the pole has poor torsional resistance, which causes the pole to easily loosen or detach from the mounting hole during screw connection with external equipment, thereby affecting the stability and reliability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 Shows a perspective schematic diagram of a top cover assembly in some embodiments of the present application;

[0023] Figure 2 Shows an exploded schematic diagram of a top cover assembly in some embodiments of the present application;

[0024] Figure 3 A three-dimensional schematic diagram of the top cover in some embodiments of the present application is shown.

[0025] Description of main component symbols:

[0026] 100-top cover assembly;

[0027] 110 - top cover; 111 - first mounting hole; 1111 - first limiting portion; 1112 - third limiting portion; 1113 - fourth limiting portion; 112 - second mounting hole; 1121 - internal thread;

[0028] 120-pole; 121-second limiting portion;

[0029] 130-explosion-proof valve; 131-external thread. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a top cover assembly 100 , which is mainly used on a single battery. The top cover assembly 100 includes a top cover 110 and a terminal 120 .

[0036] The top cover 110 is provided with a first mounting hole 111 , a first limiting portion 1111 is provided on the hole wall of the first mounting hole 111 , the pole 120 is provided in the first mounting hole 111 , and a second limiting portion 121 is provided to cooperate with the first limiting portion 1111 .

[0037] The top cover assembly 100 provided in the embodiment of the present application provides a first limiting portion 1111 on the hole wall of the first mounting hole 111, and provides a second limiting portion 121 on the pole 120 that cooperates with the first limiting portion 1111. The first limiting portion 1111 and the second limiting portion 121 cooperate to play a limiting role, thereby limiting the rotation of the pole 120 relative to the first mounting hole 111, effectively improving the torsional resistance of the pole 120, reducing the probability of the pole 120 loosening or detaching from the first mounting hole 111 during screw connection with an external device, and ensuring the stability and reliability of the electrical connection between the single battery and the external device through the pole 120. This avoids the technical problem in the prior art that the pole 120 has poor torsional resistance, which causes the pole 120 to easily loosen or detach from the mounting hole during screw connection with an external device, thereby affecting the stability and reliability of the electrical connection.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, the first limiting portion 1111 is a limiting protrusion, and the second limiting portion 121 is a limiting groove that cooperates with the limiting protrusion. The limiting protrusion is arranged along the axial extension of the first mounting hole 111, and the limiting groove is opened along the axial extension of the pole 120.

[0039] In this embodiment, the first limiting portion 1111 is a limiting protrusion, and the second limiting portion 121 is a limiting groove that cooperates with the limiting protrusion. The limiting protrusion is extended along the axial direction of the first mounting hole 111, and the limiting groove is extended along the axial direction of the pole 120. The limiting protrusion and the limiting groove are cooperated to limit the pole 120 from rotating around its axis relative to the first mounting hole 111, thereby improving the torsional resistance of the pole 120, and further reducing the probability of the pole 120 loosening or disengaging from the first mounting hole 111 during the process of screwing with the external device, thereby ensuring the stability and reliability of the electrical connection between the single battery and the external device through the pole 120.

[0040] In one embodiment of the present application, the first limiting portion 1111 is a limiting groove, and the second limiting portion 121 is a limiting protrusion that cooperates with the limiting groove. The limiting groove is opened along the axial extension of the first mounting hole 111, and the limiting protrusion is set along the axial extension of the pole 120.

[0041] In this embodiment, the first limiting portion 1111 is a limiting groove, and the second limiting portion 121 is a limiting protrusion that cooperates with the limiting groove. The limiting groove is opened along the axial extension of the first mounting hole 111, and the limiting protrusion is set along the axial extension of the pole 120, so that the pole 120 is limited to rotate around its axis relative to the first mounting hole 111 under the cooperation of the limiting groove and the limiting protrusion, thereby improving the torsional resistance of the pole 120, and further reducing the probability of the pole 120 loosening or detaching from the first mounting hole 111 during the process of screwing with the external device, thereby ensuring the stability and reliability of the electrical connection between the single battery and the external device through the pole 120.

[0042] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, a plurality of the first limiting portions 1111 and the second limiting portions 121 are provided, and the plurality of first limiting portions 1111 are spaced apart along the inner circumference of the first mounting hole 111, and the plurality of second limiting portions 121 are spaced apart along the outer circumference of the pole 120, and the plurality of first limiting portions 1111 and the plurality of second limiting portions 121 are provided in a one-to-one correspondence.

[0043] In this embodiment, by providing a plurality of first limiting portions 1111 and second limiting portions 121, the plurality of first limiting portions 1111 and the plurality of second limiting portions 121 are spaced apart along the inner circumference of the first mounting hole 111 and the outer circumference of the terminal 120, respectively, and the plurality of first limiting portions 1111 and the plurality of second limiting portions 121 are provided in a one-to-one correspondence. In this way, under the limiting action of the plurality of first limiting portions 1111 and second limiting portions 121, the rotation of the terminal 120 relative to the first mounting hole 111 is further restricted, the torsional resistance of the terminal 120 is further improved, the probability of the terminal 120 becoming loose or disengaging from the first mounting hole 111 during the process of being screwed to the external device is further reduced, and the stability and reliability of the electrical connection between the single battery cell and the external device via the terminal 120 is further ensured.

[0044] For example, the plurality of first limiting portions 1111 and the plurality of second limiting portions 121 are evenly spaced along the inner circumference of the first mounting hole 111 and the outer circumference of the pole 120. The number of the first limiting portions 1111 and the second limiting portions 121 can be three, four, or more, and can be specifically designed according to actual product needs, and will not be listed here for explanation.

[0045] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, a third limiting portion 1112 is provided on the hole wall of the first mounting hole 111 , and one end of the pole 120 abuts against the third limiting portion 1112 .

[0046] In this embodiment, a third limiting portion 1112 is provided on the wall of the first mounting hole 111, and one end of the pole 120 is abutted against the third limiting portion 1112, so that the pole 120 is limited to move toward the shell of the single cell under the limiting action of the third limiting portion 1112, thereby preventing the pole 120 from detaching from the mounting hole, thereby ensuring the stability and reliability of the electrical connection between the single cell and the external device through the pole 120.

[0047] At the same time, the contact between one end of the pole 120 and the third limiting portion 1112 can also play a sealing role, thereby preventing the electrolyte inside the single battery from leaking through the first mounting hole 111.

[0048] Illustratively, the third limiting portion 1112 may be an annular flange.

[0049] like Figure 2 and Figure 3 As shown, in the above embodiment of the present application, a fourth limiting portion 1113 is provided on the hole wall of the first mounting hole 111 at one end away from the third limiting portion 1112 , and the end of the pole 120 away from the third limiting portion 1112 abuts against the fourth limiting portion 1113 .

[0050] In this embodiment, a fourth limiting portion 1113 is provided on the wall of the first mounting hole 111 at one end away from the third limiting portion 1112, and an end of the pole 120 away from the third limiting portion 1112 is brought into contact with the fourth limiting portion 1113, so that the pole 120 is limited to move toward the direction away from the shell of the single cell under the limiting action of the fourth limiting portion 1113, thereby preventing the pole 120 from detaching from the mounting hole, so that the pole 120 is firmly set in the mounting hole, thereby ensuring the stability and reliability of the electrical connection between the single cell and the external device through the pole 120.

[0051] At the same time, the contact between the other end of the pole 120 and the fourth limiting portion 1113 can also play a sealing role, thereby preventing the electrolyte inside the single battery from leaking through the first mounting hole 111.

[0052] Illustratively, the fourth limiting portion 1113 may be an annular flange.

[0053] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, the top cover assembly 100 also includes an explosion-proof valve 130, the outer side of the explosion-proof valve 130 is provided with an external thread 131, the top cover 110 is provided with a second mounting hole 112, and the hole wall of the second mounting hole 112 is provided with an internal thread 1121 that matches the external thread 131.

[0054] In this embodiment, external threads 131 are provided on the outside of explosion-proof valve 130, a second mounting hole 112 is formed in top cover 110, and internal threads 1121 are provided on the wall of second mounting hole 112 to mate with external threads 131. Thus, the threaded connection between external threads 131 and internal threads 1121 allows explosion-proof valve 130 to be detachably connected to second mounting hole 112. When explosion-proof valve 130 is removed from second mounting hole 112, second mounting hole 112 can serve as an injection port for the individual cells, facilitating injection of electrolyte into the cells through second mounting hole 112. After injection is complete, explosion-proof valve 130 is installed onto second mounting hole 112 to seal second mounting hole 112, preventing leakage of electrolyte from the cells through second mounting hole 112.

[0055] In this way, the mounting hole and the liquid injection hole of the explosion-proof valve 130 are integrated into the second mounting hole 112, so that there is no need to open a separate liquid injection hole on the top cover 110, which effectively simplifies the processing technology, reduces the manufacturing cost of the top cover 110, and is conducive to improving the sealing and space utilization of the top cover 110.

[0056] In one embodiment of the present application, the top cover 110 is made of plastic and is integrally injection-molded with the pole 120 .

[0057] In this embodiment, the top cover 110 can be made of a plastic material such as polyphenylene sulfide, polypropylene, acrylonitrile butadiene styrene, or polyethylene terephthalate. This reduces the material cost of the top cover 110 while also providing insulation to prevent short circuits between the positive and negative electrodes. Furthermore, this allows the top cover 110 to be lightweight, reducing its overall weight, facilitating a lightweight design for the top cover 110 and increasing the energy density of the battery cells.

[0058] By integrally injection-molding the top cover 110 and the pole 120, on the one hand, the connection stability between the pole 120 and the top cover 110 can be improved, thereby improving the torsional resistance of the pole 120; on the other hand, the step of installing the pole 120 on the top cover 110 can be omitted, thereby simplifying the assembly process and improving production efficiency.

[0059] In one embodiment of the present application, the thickness of the top cover 110 is 3 to 30 mm.

[0060] In this embodiment, by setting the thickness of the top cover 110 between 3 mm and 30 mm, this can prevent the top cover 110 from being too thin, which would result in a low strength of the top cover 110 and affect the stability and reliability of the battery cells. It can also prevent the top cover 110 from being too thick, which would result in high material costs and excessive weight.

[0061] Exemplarily, the thickness of the top cover 110 can be 3 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc., and can be specifically designed according to actual needs of the product, which will not be listed here one by one.

[0062] The embodiment of the present application further provides a single cell battery, comprising the top cover assembly 100 described in the above embodiment.

[0063] The single cell has the top cover assembly 100 in any of the above embodiments, and thus has all the beneficial effects of the top cover assembly 100, which will not be described in detail here.

[0064] 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. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0065] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A top cover assembly, characterized in that: include: A top cover, wherein the top cover is provided with a first mounting hole, and a first limiting portion is provided on a hole wall of the first mounting hole; The pole is arranged in the first mounting hole, and the pole is provided with a second limiting portion that matches the first limiting portion.

2. The top cover assembly according to claim 1, wherein: The first limiting portion is a limiting protrusion, and the second limiting portion is a limiting groove matched with the limiting protrusion. The limiting protrusion is extended along the axial direction of the first mounting hole, and the limiting groove is extended along the axial direction of the pole.

3. The top cover assembly according to claim 1, wherein: The first limiting portion is a limiting groove, and the second limiting portion is a limiting protrusion matched with the limiting groove. The limiting groove is extended along the axial direction of the first mounting hole, and the limiting protrusion is extended along the axial direction of the pole.

4. The top cover assembly according to claim 1, wherein: There are multiple first limiting portions and multiple second limiting portions, and the multiple first limiting portions are arranged at intervals along the inner circumference of the first mounting hole, and the multiple second limiting portions are arranged at intervals along the outer circumference of the pole, and the multiple first limiting portions and the multiple second limiting portions are arranged in a one-to-one correspondence.

5. The top cover assembly according to claim 1, wherein: A third limiting portion is provided on the hole wall of the first mounting hole, and one end of the pole abuts against the third limiting portion.

6. The top cover assembly according to claim 5, characterized in that A fourth limiting portion is provided on the hole wall of the first mounting hole at one end away from the third limiting portion, and one end of the pole away from the third limiting portion abuts against the fourth limiting portion.

7. The top cover assembly according to claim 1, wherein: The top cover assembly also includes an explosion-proof valve, the outer side of the explosion-proof valve is provided with an external thread, the top cover is opened with a second mounting hole, and the hole wall of the second mounting hole is provided with an internal thread matching the external thread.

8. The top cover assembly according to claim 1, wherein: The top cover is made of plastic material and is integrally injection-molded with the pole.

9. The top cover assembly according to claim 1, wherein: The thickness of the top cover is 3 to 30 mm.

10. A single cell battery, characterized in that: A top cover assembly comprising the top cover assembly according to any one of claims 1 to 9.

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