Cap assembly, battery and electronic equipment

Abstract

The embodiment of the utility model provides a cap assembly, a battery and electronic equipment. The cover cap assembly comprises a cover plate, wherein a first mounting hole and a second mounting hole are formed in the thickness direction of the cover plate; the first mounting hole is internally provided with a first electrode terminal, the first electrode terminal is isolated from the cover plate, and the first electrode terminal is used for being electrically connected with a first tab of a battery cell; a second electrode terminal is arranged at a position corresponding to the second mounting hole and is used for leading out a second tab of the battery cell; and the insulating component is filled in a gap formed by the cover plate and the first electrode terminal and a gap formed by the cover plate and the second electrode terminal, so that the outer surface of the cap component is a flat surface.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and more specifically, to a cap assembly, a battery, and an electronic device. Background Art

[0002] In current electronic device designs, to ensure a stable and secure electrical connection between the battery and the device, the electrical contact surfaces on the battery that connect to the electronic device often require careful padding or fixing. This treatment not only enhances the conductivity of the contact surface but also greatly improves the physical stability between the battery and the device, effectively preventing the battery from accidentally falling off during daily use.

[0003] Given the close integration of batteries and electronic devices, simple replacement in the traditional sense is no longer feasible. Replacing the battery often requires irreversible, destructive manipulation of the electronic device, such as disassembling specific components, breaking seals, or unlocking special locks to ensure safe access and removal of the old battery before replacing it with a new one. This process not only requires users to possess certain technical skills and tools, but may also affect the appearance of the device or the warranty terms, thereby increasing the complexity and cost of battery replacement.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a cap assembly, a battery, and an electronic device.

[0006] In a first aspect, an embodiment of the present application provides a cap assembly. The cap assembly includes:

[0007] The cover plate is provided with a first mounting hole and a second mounting hole along its thickness direction;

[0008] A first electrode terminal is provided in the first mounting hole, the first electrode terminal is isolated from the cover plate, and the first electrode terminal is used to be electrically connected to the first tab of the battery cell;

[0009] A second electrode terminal is provided at a position corresponding to the second mounting hole, and the second electrode terminal is used to lead out a second tab of the battery cell;

[0010] An insulating component is filled in a gap formed between the cover plate and the first electrode terminal and a gap formed between the cover plate and the second electrode terminal, so that an outer surface of the cap component is a flat surface.

[0011] Optionally, the insulating component includes: an insulating rubber layer, which is sleeved on the first electrode terminal and the second electrode terminal so that the insulating rubber layer fills the gap formed by the cover plate and the first electrode terminal and the gap formed by the cover plate and the second electrode terminal.

[0012] Optionally, the insulating component further includes: a protective layer, wherein the protective layer is arranged on the upper surface of the insulating adhesive layer.

[0013] Optionally, the second mounting hole serves as a liquid injection hole, and a blocking portion is provided in the second mounting hole, and the blocking portion is located below the second electrode terminal.

[0014] Optionally, the second electrode terminal includes a first connecting portion, a second connecting portion, and a third connecting portion located between the first connecting portion and the second connecting portion and connected to the first connecting portion and the second connecting portion;

[0015] The first connecting portion and the second connecting portion are in close contact with the cover plate;

[0016] The third connection portion protrudes from the first connection portion and the second connection portion, and the third connection portion is used to contact an external device.

[0017] Optionally, the first electrode terminal includes a rivet portion and a rivet sheet, the rivet portion and the rivet sheet cooperate to place the first electrode terminal in the first mounting hole, and the rivet portion is used to contact an external device.

[0018] Optionally, the cap assembly further includes an insulating portion, which is sleeved outside the first electrode terminal to isolate the first electrode terminal from the cover plate.

[0019] Optionally, the second electrode terminal is a nickel sheet formed by stamping.

[0020] In a second aspect, embodiments of the present application further provide a battery. The battery includes the cap assembly described in the first aspect; the battery further includes: a housing assembly, the housing assembly including a housing and a battery cell disposed within the housing, the battery cell including a first tab and a second tab;

[0021] The cover plate is welded to the shell;

[0022] The first electrode tab is connected to the first electrode terminal, and the second electrode tab is connected to the second electrode terminal or the cap plate.

[0023] In a third aspect, an embodiment of the present application further provides an electronic device comprising the battery as described in the second aspect.

[0024] According to the embodiment of the present application, the cover assembly adopts local packaging (pack) technology, that is, the cover is precisely packaged using an insulating assembly, which on the one hand achieves a safe and reliable connection between the battery cell and the external circuit; on the other hand, it greatly facilitates the battery maintenance and replacement process.

[0025] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0027] Figure 1 Shown is a battery structure diagram provided in an embodiment of the present application.

[0028] Figure 2 Shown is a decomposition diagram of the battery structure provided in an embodiment of the present application.

[0029] Figure 3 Shown is a cross-sectional view of the battery structure provided in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Cover plate; 10. First mounting hole; 11. Second mounting hole;

[0032] 2. First electrode terminal; 21. Rivet portion; 22. Riveting piece;

[0033] 3. Second electrode terminal; 31. First connecting portion; 32. Second connecting portion; 33. Third connecting portion;

[0034] 4. Insulation assembly; 41. Insulation adhesive layer; 42. Protective layer;

[0035] 5. Sealing part;

[0036] 6. Insulation part;

[0037] 7. Housing assembly; 71. Housing; 72. Cell; 721. First tab; 722. Second tab; 723. First adhesive tape; 724. Second adhesive tape;

[0038] 8. Insulation gasket. DETAILED DESCRIPTION

[0039] 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 arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0041] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] The embodiment of the present application provides a cap assembly. Figure 1-Figure 3 The cap assembly includes: a cover plate 1, a first electrode terminal 2, a second electrode terminal 3 and an insulating assembly 4.

[0045] The cover plate 1 is provided with a first mounting hole 10 and a second mounting hole 11 along its thickness. A first electrode terminal 2 is disposed within the first mounting hole 10, insulated from the cover plate 1. The first electrode terminal 2 is used to electrically connect to the first tab 721 of the battery cell 72. A second electrode terminal 3 is disposed in a position corresponding to the second mounting hole 11. The second electrode terminal 3 is used to lead out the second tab 722 of the battery cell 72. An insulating component 4 fills the gap formed between the cover plate 1 and the first electrode terminal 2, and also fills the gap formed between the cover plate 1 and the second electrode terminal 3, so that the outer surface of the cap assembly is flat.

[0046] In this embodiment of the present application, the cap assembly includes a cover plate 1, which serves as the base structure of the cap assembly. The cover plate 1 has sufficient strength and rigidity to protect the battery cells 72 and electrode terminals within. The cover plate 1 has a first mounting hole 10 and a second mounting hole 11 defined along its thickness. These two holes are used to mount and secure the electrode terminals, ensuring they properly mate with the tabs of the battery cells 72. For example, the cover plate 1 can be integrally formed using insert injection molding.

[0047] The first electrode terminal 2 is installed in the first mounting hole 10 and is isolated from the cover plate 1 to prevent short circuits. This terminal is used to electrically connect to the first tab 721 (usually one of the positive or negative electrodes) of the battery cell 72, thereby achieving electrical connection between the battery cell 72 and an external circuit or device.

[0048] The embodiment of the present application specifies that the second electrode terminal 3 is provided at a position corresponding to the second mounting hole 11. For example, the second electrode terminal 3 may be provided in the second mounting hole 11, or the second electrode terminal 3 may not be provided in the second mounting hole 11. Generally speaking, the second electrode terminal 3 is fixed to the cover plate 1 in some manner, or connected to the cover plate 1 through other structures, so as to ensure that the second electrode terminal 3 can lead the current from the second tab 722 (with opposite polarity to the first tab 721) of the battery cell 72, and the second electrode terminal 3 realizes the electrical connection between the battery cell 72 and the external circuit or device.

[0049] It is important to emphasize in the present embodiment that the cap assembly also includes an insulating assembly 4. This insulating assembly 4 plays a crucial role in the cap assembly, filling the gap between the cover plate 1 and the electrode terminal. This not only prevents short circuits caused by direct contact between the electrode terminal and the cover plate 1, but also ensures the smoothness of the outer surface of the entire cap assembly. A smooth outer surface facilitates assembly and overall aesthetics of the battery pack / cell, while also reducing potential interference with other components.

[0050] Specifically, through the filling of the insulating component 4, the outer surface of the cap assembly is designed to be flat, which means that during the assembly process of the battery pack / battery, the cap assembly can better cooperate with other components (such as the battery housing 71, thermal management system, etc.) to improve the compactness and stability of the overall structure.

[0051] Particularly noteworthy is the use of partial packaging (packing) technology for the cover plate 1 assembly, precisely encapsulating the cover plate 1 with the insulating component 4 while cleverly exposing the electrode terminals. This design simplifies electronic device connection and enables plug-and-play convenience. Combined with its smooth exterior, the battery or battery pack can be seamlessly integrated into various electronic devices without the need for additional sealing measures or space constraints. This greatly facilitates battery maintenance and replacement, providing users with an unprecedented user experience.

[0052] In one embodiment, referring to Figure 2 and Figure 3 The insulating component 4 includes: an insulating adhesive layer 41, which is sleeved on the first electrode terminal 2 and the second electrode terminal 3, so that the insulating adhesive layer 41 fills the gap formed by the cover plate 1 and the first electrode terminal 2 and the gap formed by the cover plate 1 and the second electrode terminal 3.

[0053] In the construction of the insulating assembly 4, a key component is the insulating adhesive layer 41, which ensures that any gap between the electrode terminal and the cover plate 1 is effectively filled. Exemplarily, the insulating adhesive layer 41 is a PP adhesive layer.

[0054] Specifically, the insulating adhesive layer 41 tightly wraps the electrode terminal and penetrates into the tiny gap between the cover plate 1 and the electrode terminal, forming a continuous and seamless insulating barrier.

[0055] This design not only enhances the overall insulation performance of the cap assembly, effectively preventing the risk of short circuits and leakage, but also further improves the structural strength and stability of the assembly. Furthermore, the flatness and consistency of the insulating adhesive layer 41 ensures the smoothness of the outer surface of the cap assembly. When applied to a battery or battery pack, it can be seamlessly integrated into various electronic devices without the need for additional sealing measures or space constraints. This greatly facilitates battery maintenance and replacement, providing users with an unprecedented user experience.

[0056] Illustratively, the insulating adhesive layer 41 is provided with a first through hole and a second through hole, and the insulating adhesive layer 41 is sleeved on the first electrode terminal 2 and the second electrode terminal 3 through the first through hole and the second through hole to perform a packaging design on the upper surface of the cover plate 1 assembly.

[0057] In one embodiment, referring to Figure 2 and Figure 3 The insulating component 4 further includes a protective layer 42 , which is disposed on the upper surface of the insulating adhesive layer 41 .

[0058] In this embodiment, protective layer 42 provides an additional protective barrier for the entire cap assembly. Protective layer 42 not only protects against physical impact, scratches, and abrasion in the external environment, effectively extending the service life of the cap assembly, but also provides a certain degree of resistance to chemical corrosion, maintaining the stability of the assembly's internal structure and the reliability of its electrical performance.

[0059] At the same time, the protective layer 42 also has a certain degree of flatness and smoothness. When docking with external equipment or systems, the protective layer 42 can ensure a good contact surface and reduce assembly problems or performance degradation caused by surface unevenness.

[0060] Exemplarily, the protective layer 42 is a protective adhesive tape.

[0061] In one embodiment, referring to Figure 2 and Figure 3 The second mounting hole 11 serves as a liquid injection hole. A blocking portion 5 is provided in the second mounting hole 11 . The blocking portion 5 is located below the second electrode terminal 3 .

[0062] In this embodiment, the second mounting hole 11 serves as an injection hole. A sealing portion 5 is cleverly positioned within the second mounting hole 11, located below the second electrode terminal 3. For example, during the battery pack / cell manufacturing process, this sealing portion 5 initially remains open, allowing the electrolyte to flow smoothly through the injection hole into the battery, completing the electrolyte filling and infiltration. Once the electrolyte is fully injected and reaches the preset level, the sealing portion 5 quickly and accurately seals the injection hole, preventing leakage of the electrolyte and the intrusion of external impurities.

[0063] It's worth noting that the sealing portion 5 does not affect the normal function of the second electrode terminal 3. It is located below the electrode terminal, and the two are structurally independent and do not interfere with each other. Therefore, even after the sealing portion 5 closes the liquid injection hole, the second electrode terminal 3 can still maintain a stable electrical connection with the second tab 722 of the battery cell 72, ensuring the normal electrical performance of the battery pack.

[0064] In one embodiment, referring to Figure 3 The second electrode terminal 3 includes a first connecting portion 31, a second connecting portion 32, and a third connecting portion 33 located between the first connecting portion 31 and the second connecting portion 32 and connected to the first connecting portion 31 and the second connecting portion 32;

[0065] The first connecting portion 31 and the second connecting portion 32 are in close contact with the cover plate 1;

[0066] The third connection portion 33 protrudes from the first connection portion 31 and the second connection portion 32 , and the third connection portion 33 is used to contact an external device.

[0067] In this embodiment, the second electrode terminal 3 includes a first connection portion 31 , a second connection portion 32 and a third connection portion 33 . The second electrode terminal 3 may be an integrally formed structural member.

[0068] The first connection portion 31 is the main part of the electrode terminal that contacts the cover plate 1 . The close contact between the first connection portion 31 and the cover plate 1 not only enhances the reliability of the connection, but also helps to improve the overall structural strength of the cover plate 1 assembly.

[0069] The second connecting portion 32 is also in close contact with the cover plate 1 , further consolidating the installation position of the electrode terminal, and together with the first connecting portion 31 , forming a stable base for the electrode terminal in the cover plate 1 assembly.

[0070] The third connection portion 33 is a key component for connecting the electrode terminal to external devices. It protrudes above the first and second connection portions 31, 32, creating an easily identifiable and accessible connection point, allowing the battery pack / battery to be easily connected to various charging devices, test instruments, or electronic devices. Furthermore, the third connection portion 33 protrudes above the first and second connection portions 31, 32, facilitating the formation of a flat surface for the cover assembly with the first electrode terminal 2 and insulation assembly 4.

[0071] Exemplarily, the second electrode terminal 3 is a nickel sheet formed by stamping.

[0072] Specifically, nickel sheet, as a high-quality conductive material, offers excellent conductivity, corrosion resistance, and mechanical strength, making it ideal for electrode terminals. Through a stamping process, the nickel sheet can be precisely formed into the desired shape and size, including the first connecting portion 31, the second connecting portion 32, and the protruding third connecting portion 33. This stamping process not only offers high production efficiency but also ensures the precision and consistency of the electrode terminals, which is crucial for improving the electrical performance and reliability of battery packs / cells.

[0073] In one embodiment, referring to Figure 2 and Figure 3 The first electrode terminal 2 includes a rivet portion and a rivet piece 22 , wherein the rivet portion and the rivet piece 22 cooperate to place the first electrode terminal 2 in the first mounting hole 10 , and the rivet portion 21 is used to contact an external device.

[0074] In this embodiment, the first electrode terminal 2 consists of a rivet portion 21 and a rivet plate 22. This combined design leverages the advantages of the riveting process. The rivet portion 21 is installed in the first mounting hole 10, and pressure is applied to firmly bond the rivet portion 21 and the rivet plate 22 together to form a single, integrated structure. This structure not only provides high strength and stability, but also resists vibration and impact, ensuring the stability of the electrode terminal within the cap assembly.

[0075] In one embodiment, referring to Figure 2 and Figure 3 The cap assembly further includes an insulating portion 6 , which is sleeved on the outside of the first electrode terminal 2 to isolate the first electrode terminal 2 from the cover plate 1 .

[0076] In this embodiment, electrical safety is enhanced by adding an insulating portion 6. The insulating portion 6 is positioned over the first electrode terminal 2, forming an effective isolation layer that completely isolates the first electrode terminal 2 from the cover plate 1. Specifically, the insulating portion 6 is positioned over the rivet portion and above the rivet tab 22. This prevents the risk of a short circuit between the first electrode terminal 2 and the cover plate 1, thereby improving the electrical safety of the battery pack.

[0077] The present application also provides a battery. Figure 2 and Figure 3 The battery includes the cap assembly as described above; the battery also includes: a shell assembly 7, the shell assembly 7 includes a shell 71 and a battery cell 72 placed in the shell 71, the battery cell 72 includes a first tab 721 and a second tab 722;

[0078] The cover plate 1 is welded to the housing 71;

[0079] The first electrode tab 721 is connected to the first electrode terminal 2 , and the second electrode tab 722 is connected to the second electrode terminal 3 or the cover plate 1 .

[0080] In this embodiment, the battery further includes a housing assembly 7, which comprises a housing 71 and a battery cell 72 disposed within the housing 71. The battery cell 72, as the core of the battery, is responsible for storing and releasing electrical energy. The battery cell 72 is provided with a first tab 721 and a second tab 722, which serve as the key points of connection between the battery cell 72 and the external circuit.

[0081] During the battery assembly process, the cover plate 1 is firmly welded to the housing 71, forming a closed and stable battery shell. This welding method not only ensures the overall structural strength of the battery, but also improves the sealing performance of the battery, preventing the leakage of electrolyte and other internal substances.

[0082] In terms of electrical connection, the first tab 721 is tightly connected to the first electrode terminal 2 through an appropriate connection method (such as welding, riveting, etc.) to ensure that current can flow smoothly from the battery cell 72 to the external device. The second tab 722 can be connected to the second electrode terminal 3 or, in some designs, directly to the cover plate 1 (if the cover plate 1 is conductive and serves as the negative electrode). This flexible connection method allows the battery to adapt to different application scenarios and needs.

[0083] Exemplarily, the battery further includes an insulating gasket 8 , which is placed at the end of the battery cell 72 to prevent a short circuit between the positive and negative electrodes inside the battery.

[0084] Illustratively, the battery cell 72 includes a first electrode tab 721 and a second electrode tab 722 , which are disposed on the same side of the battery cell 72 , or on different sides of the battery cell 72 .

[0085] Illustratively, the first tab 721 is provided with a first adhesive tape 723 , and the second tab 722 is provided with a second adhesive tape 724 . The adhesive tape serves as an insulating layer, which can effectively prevent the tabs from directly contacting surrounding metal parts or other conductive materials, thereby avoiding the risk of short circuit.

[0086] An embodiment of the present application further provides an electronic device. The electronic device includes the battery described above. For example, the electronic device includes, but is not limited to, a smartphone, a tablet computer, a smartwatch, headphones, and the like.

[0087] The above embodiments focus on 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. Considering the simplicity of the text, they will not be repeated here.

[0088] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above examples may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A cap assembly, characterized in that: include: The cover plate (1) is provided with a first mounting hole (10) and a second mounting hole (11) along its thickness direction; A first electrode terminal (2) is provided in the first mounting hole (10), the first electrode terminal (2) is isolated from the cover plate (1), and the first electrode terminal (2) is used to be electrically connected to a first tab (721) of the battery cell (72); A second electrode terminal (3) is provided at a position corresponding to the second mounting hole (11), and the second electrode terminal (3) is used to lead out a second tab (722) of the battery cell (72); An insulating component (4) is filled in the gap formed between the cover plate (1) and the first electrode terminal (2) and the gap formed between the cover plate (1) and the second electrode terminal (3), so that the outer surface of the cap component is a flat surface.

2. The cap assembly according to claim 1, wherein: The insulating component (4) comprises: an insulating adhesive layer (41), wherein the insulating adhesive layer (41) is sleeved on the first electrode terminal (2) and the second electrode terminal (3), so that the insulating adhesive layer (41) fills the gap formed between the cover plate (1) and the first electrode terminal (2) and the gap formed between the cover plate (1) and the second electrode terminal (3).

3. The cap assembly according to claim 2, wherein: The insulating component (4) further includes a protective layer (42), wherein the protective layer (42) is arranged on the upper surface of the insulating adhesive layer (41).

4. The cap assembly according to claim 1, wherein: The second mounting hole (11) serves as a liquid injection hole. A blocking portion (5) is provided in the second mounting hole (11), and the blocking portion (5) is located below the second electrode terminal (3).

5. The cap assembly according to claim 1 or 4, characterized in that: The second electrode terminal (3) includes a first connecting portion (31), a second connecting portion (32), and a third connecting portion (33) located between the first connecting portion (31) and the second connecting portion (32) and connected to the first connecting portion (31) and the second connecting portion (32); The first connecting portion (31) and the second connecting portion (32) are in tight contact with the cover plate (1); The third connection portion (33) protrudes from the first connection portion (31) and the second connection portion (32), and the third connection portion (33) is used for contacting an external device.

6. The cap assembly according to claim 1, wherein: The first electrode terminal (2) comprises a rivet portion (21) and a rivet piece (22), wherein the rivet portion (21) and the rivet piece (22) cooperate to place the first electrode terminal (2) in the first mounting hole (10), and the rivet portion (21) is used to contact an external device.

7. The cap assembly according to claim 1 or 6, characterized in that: The cap assembly further comprises an insulating portion (6), wherein the insulating portion (6) is sleeved outside the first electrode terminal (2) to isolate the first electrode terminal (2) from the cover plate (1).

8. The cap assembly according to claim 5, wherein: The second electrode terminal (3) is a nickel sheet formed by stamping.

9. A battery, characterized in that: The battery comprises a cap assembly according to any one of claims 1 to 8; the battery further comprises: a housing assembly (7), the housing assembly (7) comprising a housing (71) and a battery cell (72) disposed in the housing (71), the battery cell (72) comprising a first tab (721) and a second tab (722); The cover plate (1) is welded to the housing (71); The first electrode tab (721) is connected to the first electrode terminal (2), and the second electrode tab (722) is connected to the second electrode terminal (3) or the cover plate (1).

10. An electronic device, characterized in that: The electronic device comprises the battery according to claim 9.

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