Battery cap, battery and electronic product

Abstract

The embodiment of the utility model provides a battery cap, a battery and an electronic product. The battery cap comprises: a cover plate assembly; the insulating part and the cover plate assembly are formed into a whole through injection molding; the cap assembly is isolated from the cover plate assembly through the insulating part; the cover cap assembly comprises a first abutting portion, a second abutting portion and a third abutting portion, the first abutting portion, the second abutting portion and the third abutting portion are each provided with a rib portion, the rib portions are in close fit with the insulation portion, and the first abutting portion and the second abutting portion are oppositely arranged in the thickness direction of the cover plate assembly. And the third abutting part is connected with the second abutting part and is obliquely arranged relative to the second abutting part.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery cap, a battery, and an electronic product. Background Technology

[0002] A lithium-ion battery is a rechargeable battery that primarily functions by the movement of lithium ions between the positive and negative electrodes. Due to its small size, light weight, high capacity, and environmental friendliness, lithium-ion batteries are widely used in industrial production and daily life.

[0003] Traditional lithium battery caps have poor sealing performance, which not only affects battery performance and lifespan but may also pose a safety threat.

[0004] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technology solution for a battery cap, a battery, and electronic products.

[0006] Firstly, this application provides a battery cap. The battery cap includes:

[0007] Cover plate assembly;

[0008] The insulating part is injection molded integrally with the cover plate assembly;

[0009] A cap assembly, wherein the cap assembly is isolated from the cover plate assembly by the insulating portion;

[0010] The cap assembly includes a first abutting part, a second abutting part, and a third abutting part. Each of the first abutting part, the second abutting part, and the third abutting part is provided with a rib. The rib is tightly fitted with the insulating part. The first abutting part and the second abutting part are arranged opposite to each other in the thickness direction of the cap assembly. The third abutting part is connected to the second abutting part and is inclined relative to the second abutting part.

[0011] Optionally, the cover assembly has a mounting plane that mates with the battery housing, and the mounting plane or its extension forms an angle with the third inclined plane or its extension, the angle ranging from 120° to 150°.

[0012] Optionally, the first abutting portion contacts the insulating portion at the end of the cover plate assembly along the length direction to form a first contact point;

[0013] The third contact portion has an outer surface that is away from the insulating portion, and the first contact point and the outer surface form a triangular region.

[0014] The highest point of the rib on the third abutment portion is located within the triangular area.

[0015] Optionally, the cap assembly includes a rivet and a rivet tab, the rivet tab having a third through hole, the shank of the rivet passing through the third through hole and the rivet and the rivet tab being riveted together, and the head of the rivet being the first abutment portion.

[0016] Optionally, the rivet includes a bottom and a side portion, the side portion being disposed circumferentially along the bottom and connected to the bottom, and the side portion being outwardly flared relative to the bottom;

[0017] At least a portion of the bottom is riveted to the rivet, and another portion of the bottom is the second abutment portion, and the side portion is the third abutment portion.

[0018] Optionally, the bottom riveted to the rivet protrudes relative to the bottom of the other portion.

[0019] Optionally, a locking portion is formed on the side of the rod opposite to the head, the locking portion protruding in a direction perpendicular to the axis of the rod, and the locking portion abutting against the bottom surface.

[0020] Optionally, the cover plate assembly includes a plate body and a protrusion, the protrusion being integrally formed with the plate body, and the protrusion and the plate body having a first through hole.

[0021] Secondly, embodiments of this application also provide a battery. The battery includes a battery cap as described in the first aspect.

[0022] Secondly, embodiments of this application also provide an electronic product. The electronic product includes the battery as described in the second aspect.

[0023] According to an embodiment of this application, a battery cap is provided, which ensures the stability and sealing reliability of the battery cap by injection molding the insulating part and the cover plate assembly into one piece, and by providing ribs on the abutment part where the cap assembly abuts the insulating part.

[0024] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0026] Figure 1The image shown is a structural diagram of the battery cap provided in an embodiment of this application from one perspective.

[0027] Figure 2 The diagram shown is a structural view of the battery cap provided in an embodiment of this application from another perspective.

[0028] Figure 3 The diagram shows an exploded view of the battery cap provided in an embodiment of this application. Figure 1 .

[0029] Figure 4 The diagram shows an exploded view of the battery cap provided in an embodiment of this application. Figure 2 .

[0030] Figure 5 The image shown is a cross-sectional view of the battery cap provided in an embodiment of this application.

[0031] Figure 6 As shown Figure 5 The layout structure diagram shown is shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Cover plate assembly; 10. First through hole; 11. Protrusion; 12. Plate body;

[0034] 2. Insulating part; 20. Second through hole;

[0035] 3. Cap assembly; 30. Rivet; 31. Riveting piece; 301. First abutment part; 311. Second abutment part; 312. Third abutment part; 32. Rib part; 33. Assembly plane; 313. Bottom; 314. Side part; 303. Head; 302. Rod part; 3021. Snap-fit ​​part;

[0036] A. First contact point; B. Second contact point; C. Third contact point. Detailed Implementation

[0037] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0039] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0040] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] This application provides a battery cap. (Refer to...) Figures 1-6 The battery cap includes: a cover plate assembly 1; an insulating part 2, which is injection molded integrally with the cover plate assembly 1; and a cap assembly 3, which is isolated from the cover plate assembly 1 by the insulating part 2.

[0043] The cap assembly 3 includes a first abutting part 301, a second abutting part 311, and a third abutting part 312. The first abutting part 301, the second abutting part 311, and the third abutting part 312 are all provided with ribs 32. The ribs 32 are tightly fitted with the insulating part 2. The first abutting part 301 and the second abutting part 311 are arranged opposite to each other in the thickness direction of the cap assembly 1. The third abutting part 312 is connected to the second abutting part 311 and is inclined relative to the second abutting part 311.

[0044] In the embodiments of this application, reference is made to Figures 1-5 The battery cap includes a cover plate assembly 1, an insulating part 2, and a cap assembly 3. The cap assembly 3 is connected to the cover plate assembly 1 through the insulating part 2, wherein the insulating part 2 is located between the cover plate assembly 1 and the cap assembly 3 to isolate the cover plate assembly 1 and the cap assembly 3.

[0045] Specifically, the cover plate assembly 1 has a first through hole 10, and the insulating part 2 is disposed on the cover plate assembly 1 through the first through hole 10. The insulating part 2 has a second through hole 20, and the cap assembly 3 is disposed on the insulating part 2 through the second through hole 20. In this way, the insulating part 2 is located between the cover plate assembly 1 and the cap assembly 3, so as to isolate the cover plate assembly 1 and the cap assembly 3.

[0046] The cover assembly 1 is used to seal the opening of the battery casing to cover and protect the battery. For example, the cover assembly 1 can be made of steel.

[0047] In this embodiment, the insulating part 2 and the cover assembly 1 are integrally formed by injection molding, meaning they are joined together in the same manufacturing process using injection molding technology. For example, the material of the insulating part 2 can include, but is not limited to, PP, PVDF, and fluororubber. This integral molding process makes the insulating part 2 and the cover assembly 1 a single unit, which enhances the overall stability and connection reliability of the cover assembly 1 and the insulating part 2, making the battery cap safer and more reliable during use.

[0048] An insulating portion 2 is disposed on the cover plate assembly 1, penetrating the first through hole 10. Optionally, at least a portion of the insulating portion 2 is located within the first through hole 10. The main purpose of this is to ensure electrical isolation around the first through hole 10, prevent accidental current outflow or inflow into the area, and increase safety during use.

[0049] The cap assembly 3 is another key part of the battery cap, and it is isolated from the cover assembly 1 by the insulating part 2. The cap assembly 3 is usually also made of metal or other conductive materials to ensure good electrical conductivity; for example, the cap assembly 3 can be made of aluminum.

[0050] In this embodiment, it is important to emphasize that the cap assembly 3 includes three abutting parts: a first abutting part 301, a second abutting part 311, and a third abutting part 312. Each of these abutting parts is provided with a rib 32, which fits tightly with the insulating part 2 to enhance the connection strength and stability between the cap assembly 3 and the insulating part 2.

[0051] Specifically, refer to Figure 5 and Figure 6 The first abutment portion 301 and the second abutment portion 311 are disposed opposite each other in the thickness direction of the cover plate assembly 1. This helps to ensure the stable installation of the cap assembly 3 in the vertical direction and to ensure the sealing performance of the cover plate assembly 1 and the cap assembly 3 in the vertical direction. The third abutment portion 312 is connected to the second abutment portion 311 and is disposed at an angle relative to the second abutment portion 311. This design helps to position and fix the cap assembly 3 in a specific direction (the specific direction is: the direction of inclination relative to the vertical direction), and also ensures the sealing performance of the cover plate assembly 1 and the cap assembly 3 in that specific direction. This allows for double sealing in different directions, improving the stability of the seal.

[0052] Therefore, in this embodiment, the battery cap design takes into account electrical isolation, connection stability, and connection sealing. The stability and sealing reliability of the battery cap are ensured by the integral injection molding of the insulating part 2 and the cover assembly 1, and by the rib 32 provided on the abutment portion where the cap assembly 3 abuts against the insulating part 2.

[0053] In one embodiment, refer to Figure 5The cover plate assembly 1 has an assembly plane 33 that mates with the battery housing. An angle α is formed between the assembly plane 33 or its extension surface and the third abutment portion 312 or its extension surface, and the angle α ranges from 120° to 150°.

[0054] In this embodiment, the third abutment portion 312 is inclined relative to the second abutment portion 311, and the angle between the third abutment portion 312 or its extension surface and the mounting plane 33 or its extension surface is limited, effectively ensuring the overall sealing of the battery cap. (Refer to...) Figure 5 The image shows the mounting plane 33 in the cover assembly 1 that mates with the battery housing.

[0055] Specifically, the cover assembly 1 has a mounting surface 33 that mates with the battery housing, and this mounting surface 33 or its extension forms an angle with the third abutment portion 312 or its extension of the cap assembly 3. The specific range of this angle is 120° to 150°.

[0056] By limiting the included angle within this range, the contact pressure distribution between the cap assembly 3 and the battery casing can be optimized, thereby enhancing the sealing performance of the battery cap and preventing electrolyte leakage or the intrusion of external contaminants.

[0057] In addition, the design of this angle also takes into account the structural stability of the battery cap. An angle that is too small may result in a structure that is too compact and not able to withstand pressure or vibration; while an angle that is too large may reduce the compactness and overall strength of the structure.

[0058] In one embodiment, refer to Figure 5 and Figure 6 The first abutting part 301 contacts the insulating part 2 at the end of the cover plate assembly 1 in the length direction to form a first contact point A;

[0059] The third contact portion has an outer surface that is away from the insulating portion, and the first contact point and the outer surface form a triangular region.

[0060] The highest point of the rib on the third abutment portion is located within the triangular area.

[0061] In this embodiment, the first abutting portion 301 has an end in the length direction of the cover assembly 1, and this end contacts the insulating portion 2 at a first contact point A. This first contact point A is formed by the pressure between the cover assembly 3 and the insulating portion 2. This contact point is used to ensure that the cover assembly 1 has stable support or positioning in the length direction.

[0062] The third contact portion 312, facing away from the outer surface of the insulating portion 2, connects with the first contact point A to form the triangular region. (Refer to...) Figure 5 and Figure 6 The first contact point A and the third abutment part 312 form a triangular region. The figure shows the second contact point B and the third contact point C where the first contact point A and the third abutment part 312 come into contact. However, the solid structure does not include the first contact point A, the second contact point B and the third contact point C. The first contact point A is the first vertex of the triangular region shown in the figure, the second contact point B is the second vertex of the triangular region shown in the figure, and the third contact point C is the third vertex of the triangular region shown in the figure.

[0063] In this embodiment, the highest point of the rib 32 on the third abutment portion 312 is located within the aforementioned triangular area, effectively ensuring the sealing effect between the cover plate assembly 1 and the cap assembly 3.

[0064] Specifically, the highest point of the rib 32 formed by the third abutment portion 312 is located within the triangular region, which ensures a uniform pressure distribution between the cover plate assembly 1 and the cap assembly 3, thereby enhancing the overall sealing performance. Furthermore, when the highest point of the rib 32 formed by the third abutment portion 312 is located within the triangular region, it enhances the structural strength between the cover plate assembly 1 and the cap assembly 3.

[0065] In one embodiment, refer to Figure 3 and Figure 4 The cap assembly 3 includes a rivet 30 and a rivet piece 31. The rivet 30 is riveted to the rivet piece 31, and the head 303 of the rivet 30 is the first abutment portion 301.

[0066] In this embodiment, the cap assembly 3 includes a rivet 30 and a rivet piece 31. The rivet piece 31 has a third through hole, and the rivet 30 passes through the second through hole 20 and the third through hole in sequence to achieve riveting with the rivet piece 31. In this way, the cap assembly 3 is placed on the insulating part 2 by riveting. During the riveting process, the cap assembly 3 and the insulating part 2 are squeezed together, which can further improve the overall sealing performance of the battery cap.

[0067] In this embodiment, the first abutment portion 301 mentioned above refers to the head 303 of the rivet 30, and the surface of the first abutment portion 301 that contacts the insulating portion 2 is the surface of the head 303 of the rivet 30 near the shank 302. When the first abutment portion 301 contacts the insulating portion 2, it presses against the insulating portion 2, and the rib 32 formed by the first abutment portion 301 fits tightly with the insulating portion 2 to improve the sealing between the rivet 30 and the insulating portion 2. Optionally, the rib 32 formed by the first abutment portion 301 can be a protrusion, such as an arc-shaped protrusion, or it can be a depression, or an arc-shaped depression.

[0068] In one embodiment, refer to Figure 3 and Figure 4The rivet piece 31 includes a bottom 313 and a side portion 314. The side portion 314 is arranged circumferentially along the bottom 313 and connected to the bottom 313. The side portion 314 is outwardly flared relative to the bottom 313.

[0069] At least a portion of the bottom 313 is riveted to the rivet 30, and another portion of the bottom 313 is the second abutment portion 311, and the side portion 314 is the third abutment portion 312.

[0070] In this embodiment, the rivet piece 31 includes two parts: a bottom 313 and a side portion 314. The bottom 313 is the main load-bearing part of the rivet piece 31, and the bottom 313 can be a flat or a metal sheet with a certain shape. The side portion 314 is arranged circumferentially along the bottom 313 and is connected to the bottom 313. This means that the side portion 314 extends around the edge of the bottom 313. The side portion 314 is outwardly flared relative to the bottom 313, that is, the side portion 314 opens outward from the bottom 313, forming a structure similar to a trumpet or umbrella.

[0071] At least a portion of the bottom 313 of the rivet piece 31 is riveted to the rivet 30. This means that during the riveting process, the rivet 30 passes through the bottom 313 of the rivet piece 31 and secures the rivet piece 31 by deformation (such as expansion of the head 303).

[0072] Besides the portion riveted to rivet 30, another part of the bottom 313 is defined as the second abutment portion 311, wherein the surface of the second abutment portion 311 that contacts the insulating portion 2 is the inner surface of the bottom 313. This inner surface refers to the portion of the bottom 313 that is not penetrated by rivet 30, and that contacts and presses against the insulating portion 2. The second abutment portion 311 is disposed opposite to the first abutment portion 301, and the rib 32 formed by the second abutment portion 311 can be a protrusion, such as an arc-shaped protrusion, or a depression, such as an arc-shaped depression.

[0073] Since the side portion 314 is outwardly flared, its inner surface forms an annular or conical contact surface, which is used to contact and press the insulating portion 2 to ensure the overall sealing of the battery cap.

[0074] In one embodiment, refer to Figure 3 and Figure 4 The bottom 313, which is riveted to the rivet 30, protrudes relative to the other part of the bottom 313.

[0075] In this embodiment, the bottom 313 of the rivet piece 31 is not completely flat, but rather has a portion that protrudes relative to another portion. The protruding portion is designed for riveting with the rivet 30, ensuring that the rivet 30 can be securely fixed to the rivet piece 31.

[0076] In one embodiment, refer to Figure 3 and Figure 4 The rod portion 302 has a locking portion 3021 formed on the side opposite to the head 303. The locking portion 3021 protrudes in a direction perpendicular to the axis of the rod portion 302 and abuts against the bottom 313.

[0077] In this embodiment, the rivet 30 typically includes two parts: a head 303 and a shank 302. The head 303 is used to deform during the riveting process to fix the rivet piece 31, while the shank 302 passes through the rivet piece 31 and serves as a connector.

[0078] On the side of the rod 302 opposite to the head 303, a snap-fit ​​portion 3021 is designed. This snap-fit ​​portion 3021 protrudes in a direction perpendicular to the axis of the rod 302, that is, it protrudes laterally from the side of the rod 302. The main purpose of this snap-fit ​​portion 3021 is to abut against the bottom 313 of the rivet piece 31 to provide a more stable connection and positioning effect.

[0079] When the rivet 30 passes through the rivet piece 31 and is riveted, the locking part 3021 abuts against the bottom 313 of the rivet piece 31. This abutment ensures that the rivet piece 31 is not easily moved or detached when subjected to external force, thereby enhancing the stability of the connection.

[0080] In one embodiment, refer to Figure 1 and Figure 2 The cover plate assembly 1 includes a plate body 12 and a protrusion 11. The protrusion 11 is integrally formed with the plate body 12, and the protrusion 11 and the plate body 12 are provided with a first through hole 10.

[0081] In this embodiment, the cover plate assembly 1 consists of a plate body 12 and a protrusion 11. The plate body 12 is the main part of the assembly, providing basic planar structure and support function. In the case of assembling the battery cap and battery housing, at least a portion of the plate body 12 is a mounting plane 33 for assembly with the battery housing.

[0082] The protrusion 11 is tightly connected to the plate body 12, and the two are integrally formed, meaning that they are formed simultaneously during the manufacturing process without any additional connection or assembly steps. The design of the protrusion 11 enhances the structural strength of the cover plate assembly 1.

[0083] The protrusion 11 and the plate body 12 are provided with a first through hole 10 so that the insulating part can be disposed on the cover plate assembly 1 through the first through hole 10.

[0084] This application also provides a battery. The battery includes a battery cap as described above. For example, the battery includes, but is not limited to, a button cell battery.

[0085] The battery includes a battery casing, a battery cell, and a battery cap. At least one end of the battery casing is open. The battery cell is disposed inside the battery casing. The battery cap seals the open end of the battery casing. The battery cap can be any of the structures described above. This battery features reliable sealing and high energy density.

[0086] This application also provides an electronic product. The electronic product includes the battery described above. Examples of electronic devices include, but are not limited to, headphones, tablets, and wearable devices.

[0087] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0088] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A battery cap, characterized in that: include: Cover plate assembly (1); An insulating portion (2), the insulating portion (2) and the cover plate assembly (1) being injection-molded into one piece; A cap assembly (3), wherein the cap assembly (3) is isolated from the cover plate assembly (1) by the insulating portion (2); The cap assembly (3) comprises a first abutting portion (301), a second abutting portion (311) and a third abutting portion (312); the first abutting portion (301), the second abutting portion (311) and the third abutting portion (312) are all provided with ribs (32); the ribs (32) are tightly matched with the insulating portion (2); the first abutting portion (301) and the second abutting portion (311) are arranged relative to each other in the thickness direction of the cover plate assembly (1); the third abutting portion (312) is connected to the second abutting portion (311) and is arranged obliquely relative to the second abutting portion (311).

2. The battery cap according to claim 1, characterized in that: The cover plate assembly (1) has an assembly plane (33) that cooperates with the battery housing, and an angle is formed between the assembly plane (33) or an extension surface of the assembly plane (33) and the third abutment portion (312) or an extension surface of the third abutment portion (312), and the angle ranges from 120° to 150°.

3. The battery cap according to claim 1, characterized in that: The first abutment portion (301) contacts the insulating portion (2) at an end portion of the cover plate assembly (1) in the length direction to form a first contact point (A); The third abutting portion has an outer surface facing away from the insulating portion (2), and the first contact point (A) and the outer surface form a triangular area; The highest point of the rib portion (32) on the third abutting portion (312) is located within the triangular area.

4. The battery cap according to any one of claims 1 to 3, characterized in that: The cap assembly (3) comprises a rivet (30) and a rivet plate (31); the rivet (30) is riveted to the rivet plate (31); and the head (303) of the rivet (30) is the first abutment portion (301).

5. The battery cap according to claim 4, characterized in that: The riveting sheet (31) comprises a bottom (313) and a side portion (314), wherein the side portion (314) is arranged along the circumference of the bottom (313) and connected to the bottom (313), and the side portion (314) is outwardly expanded relative to the bottom (313); At least a portion of the bottom portion (313) is riveted to the rivet (30), another portion of the bottom portion (313) is the second abutting portion (311), and the side portion (314) is the third abutting portion (312).

6. The battery cap according to claim 5, characterized in that: The bottom portion (313) riveted to the rivet (30) is protruded relative to the bottom portion (313) of the other portion.

7. The battery cap according to claim 4, characterized in that: A clamping portion (3021) is formed on one side of the rod portion (302) of the rivet (30) away from the head portion (303) of the rivet (30), and the clamping portion (3021) protrudes in a direction perpendicular to the axis of the rod portion (302), and the clamping portion (3021) abuts against the bottom (313) of the rivet sheet (31).

8. The battery cap according to claim 1, characterized in that: The cover plate assembly (1) comprises a plate body (12) and a raised portion (11); the raised portion (11) and the plate body (12) are integrally formed; and the raised portion (11) and the plate body (12) are provided with a first through hole (10).

9. A battery, characterized in that: The battery comprises the battery cap according to any one of claims 1-8.

10. An electronic product, characterized in that: The electronic product comprises the battery as claimed in claim 9.

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