Cover assembly, housing and battery

Abstract

This utility model relates to the field of batteries, providing a cover plate assembly, a housing, and a battery. The cover plate assembly includes a lower plastic core with a mounting groove formed thereon for mounting a terminal base plate; and a positioning part formed on the sidewall of the mounting groove, which engages with the terminal base plate when it is mounted in the mounting groove. This cover plate assembly ensures good contact and fit between the terminal base plate and the lower plastic core, improving the overall electrical performance and stability of the battery. Precise installation and stable structural fit reduce gaps between the terminal base plate and the lower plastic core, thereby reducing the risk of electrolyte accumulation in these gaps. Electrolyte accumulation can lead to problems such as internal short circuits and corrosion in the battery, while this design effectively avoids these problems, improving the safety and reliability of the battery.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and provides a cover plate assembly, a housing, and a battery. Background Technology

[0002] In battery manufacturing, the design and manufacturing precision of the top cover structure are crucial to battery performance and safety. In the top cover structure, the terminal base plate and the lower plastic part of the top cover typically need to be tightly assembled. However, due to manufacturing tolerances, a certain gap often exists at the fit between the terminal base plate and the lower plastic part. After the battery is filled with electrolyte, these gaps will accumulate. The accumulation of electrolyte, and especially during normal battery use under low temperature and high voltage conditions, may lead to crystallization. This not only causes a decrease in battery performance but also increases the risk of internal short circuits, thus affecting battery safety and lifespan. Utility Model Content

[0003] This utility model provides a cover plate assembly to solve the defect of electrolyte accumulation in related technologies.

[0004] This utility model embodiment also provides a housing.

[0005] This utility model embodiment also provides a battery.

[0006] A first aspect of this utility model provides a cover plate assembly, comprising:

[0007] The lower plastic has a mounting groove formed on it for mounting the pole base plate;

[0008] A positioning part is formed on the side wall of the mounting groove. When the pole base plate is installed in the mounting groove, the positioning part is positioned and engaged with the pole base plate.

[0009] According to one embodiment of the present invention, there are multiple positioning parts, and the multiple positioning parts are arranged at intervals along the side wall of the mounting groove.

[0010] According to one embodiment of the present invention, the mounting groove includes a pair of first groove sidewalls disposed opposite to each other and a second groove sidewall disposed adjacent to the pair of first groove sidewalls, and the positioning portion is formed on both the first groove sidewall and the second groove sidewall.

[0011] According to one embodiment of the present invention, the positioning part includes a first positioning part and a second positioning part. The first positioning part is formed on the side wall of the first groove, and the first positioning parts on the two side walls of the first groove correspond one-to-one. The second positioning part is formed on the side wall of the second groove, and the second positioning parts on the two side walls of the second groove correspond one-to-one.

[0012] According to one embodiment of the present invention, the first positioning part on one of the first groove sidewalls protrudes toward the other first groove sidewall, and the second positioning part on one of the second groove sidewalls protrudes toward the other second groove sidewall.

[0013] According to one embodiment of the present invention, the positioning part has a chamfered edge at the edge opposite to the bottom of the mounting groove.

[0014] According to one embodiment of the present invention, the positioning part is integrally formed with the mounting groove.

[0015] According to one embodiment of the present invention, the positioning part is provided with an anti-slip structure on the side facing the pole base plate.

[0016] A second aspect of this utility model provides a housing, including the cover plate assembly described above.

[0017] A third aspect of this utility model provides a battery, including the cover plate assembly described above;

[0018] Or the aforementioned casing.

[0019] According to the first aspect of the present invention, the cover plate assembly ensures the accurate position of the electrode base plate within the mounting groove through the positioning engagement between the positioning part and the electrode base plate, thus preventing performance degradation of the cover plate assembly due to installation position deviation. Precise installation ensures good contact and fit between the lower plastic and the electrode base plate, thereby improving the overall electrical performance and stability of the battery. The tight fit between the positioning part and the electrode base plate enhances the overall structural stability of the cover plate assembly. During battery use, it may be subjected to external forces such as vibration and impact. The positioning part effectively prevents the electrode base plate from shifting or shaking within the mounting groove, ensuring the structural integrity of the cover plate assembly and extending the battery's lifespan. Precise installation and stable structural fit reduce the gap between the lower plastic and the electrode base plate, thereby reducing the risk of electrolyte accumulation in these gaps. Electrolyte accumulation may lead to internal short circuits and corrosion problems in the battery, and this design effectively avoids these problems, improving battery safety and reliability.

[0020] According to the second aspect of the present invention, the housing is enhanced in terms of structural strength and stability by incorporating the cover plate assembly into the housing. The cover plate assembly is fixed to the housing via a reasonable connection method, effectively dispersing external forces and vibrations experienced by the battery during use, preventing damage to the cover plate due to excessive localized stress, thereby improving the overall reliability and lifespan of the battery.

[0021] According to the battery provided in the third aspect embodiment of this utility model, the cover assembly, through the cooperation of the terminal base plate and the positioning part, effectively prevents internal short circuits in the battery, reduces the risk of battery overheating, fire, or even explosion, and ensures safety during battery use. The tight connection between the cover and the battery casing effectively improves the battery's sealing performance, extends the battery's service life, and reduces battery performance degradation and safety hazards caused by electrolyte leakage. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic structural diagram of the cover plate assembly provided by this utility model.

[0024] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0025] Figure label:

[0026] 100. Lower plastic part; 102. Mounting groove; 104. Positioning part; 106. First groove sidewall; 108. Second groove sidewall; 110. Chamfer; 112. Pole post base plate. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0028] like Figures 1 to 2 As shown, a first aspect embodiment of the present invention provides a cover plate assembly, comprising:

[0029] The lower plastic 100 has a mounting groove 102 formed on it for mounting the pole base plate 112;

[0030] The positioning part 104 is formed on the side wall of the mounting groove 102. When the pole base plate 112 is installed in the mounting groove 102, the positioning part 104 is positioned and engaged with the pole base plate 112.

[0031] According to the first aspect of the present invention, the cover plate assembly ensures the accurate position of the electrode base plate within the mounting groove through the positioning engagement between the positioning part and the electrode base plate, thus preventing performance degradation of the cover plate assembly due to installation position deviation. Precise installation ensures good contact and fit between the lower plastic and the electrode base plate, thereby improving the overall electrical performance and stability of the battery. The tight fit between the positioning part and the electrode base plate enhances the overall structural stability of the cover plate assembly. During battery use, it may be subjected to external forces such as vibration and impact. The positioning part effectively prevents the electrode base plate from shifting or shaking within the mounting groove, ensuring the structural integrity of the cover plate assembly and extending the battery's lifespan. Precise installation and stable structural fit reduce the gap between the lower plastic and the electrode base plate, thereby reducing the risk of electrolyte accumulation in these gaps. Electrolyte accumulation may lead to internal short circuits and corrosion problems in the battery, and this design effectively avoids these problems, improving battery safety and reliability.

[0032] Please continue reading Figures 1 to 2 In the cover plate assembly involved in this embodiment of the utility model, the lower plastic 100 is the basic structure of the entire assembly. The lower plastic 100 is usually made of plastic material with certain strength and insulation properties, manufactured by processes such as injection molding. During the manufacturing process, a mounting groove 102 for mounting the pole base plate 112 is machined on the lower plastic 100. The size, shape, and depth of the mounting groove 102 correspond to the outer dimensions of the pole base plate 112 to ensure that the pole base plate 112 can be tightly and accurately installed therein.

[0033] The positioning part 104 is formed on the side wall of the mounting groove 102. The positioning part 104 can be a protruding structure integrally formed with the lower plastic 100, or it can be a component added to the side wall of the groove during subsequent processing. The specific shape of the positioning part 104 can be columnar, block-shaped, or other forms, as long as it can achieve positioning and mating with the pole base plate 112.

[0034] During the actual installation of the pole base plate 112, the operator only needs to align the pole base plate 112 with the mounting groove 102 and apply appropriate pressure to allow the pole base plate 112 to slide in along the inner wall of the mounting groove 102. During this process, the positioning part 104 cooperates with the positioning structure on the pole base plate 112 to guide the pole base plate 112 accurately to the predetermined installation position. The positioning fit between the positioning part 104 and the pole base plate 112 can be an interference fit, a clearance fit, etc., depending on the actual design requirements and usage scenario.

[0035] According to one embodiment of the present invention, there are multiple positioning parts 104, and the multiple positioning parts 104 are arranged at intervals along the side wall of the mounting groove 102.

[0036] In one embodiment of this utility model, during the actual manufacturing process of the cover plate assembly, a plurality of positioning parts 104 are provided on the side wall of the mounting groove 102. These positioning parts 104 can be manufactured by injection molding, and the spacing between the positioning parts 104 is reasonably planned according to the size and shape of the mounting groove 102. For example, if the mounting groove 102 is long, the spacing between the positioning parts 104 can be appropriately increased, but it is necessary to ensure that each positioning part 104 can play an effective positioning role when the pole base plate 112 is installed; if the mounting groove 102 is short, the spacing between the positioning parts 104 is correspondingly reduced. During manufacturing, the cavities corresponding to the positioning parts 104 in the mold are designed according to the set spacing distribution. During the injection molding process, the plastic material fills these cavities, and after cooling and molding, a plurality of positioning parts 104 are obtained.

[0037] Multiple spaced positioning parts 104 can position the terminal base plate 112 from multiple locations. Compared to a single positioning part 104, this design greatly improves the accuracy and stability of the terminal base plate 112 installation. The combined action of multiple positioning points effectively restricts the movement and shaking of the terminal base plate 112 within the mounting groove 102. Even when the battery is subjected to external forces such as vibration or impact, the terminal base plate 112 can remain in the correct position, thereby ensuring a tight fit between the terminal base plates, reducing electrolyte accumulation problems caused by loose fit, and improving battery safety and lifespan.

[0038] According to one embodiment of the present invention, the mounting groove 102 includes a pair of first groove sidewalls 106 disposed opposite to each other and a second groove sidewall 108 disposed adjacent to the pair of first groove sidewalls 106, and a positioning part 104 is formed on both the first groove sidewall 106 and the second groove sidewall 108.

[0039] In one embodiment of this utility model, when designing the mounting groove 102 of the lower plastic 100, the structure of the mounting groove 102 is designed to include a pair of opposing first groove sidewalls 106 and an adjacent second groove sidewall 108. Positioning portions 104 are formed on both the first groove sidewall 106 and the second groove sidewall 108.

[0040] Positioning parts 104 are provided on multiple side walls, enabling omnidirectional positioning and constraint of the terminal base plate 112. When the terminal base plate 112 is installed in the mounting groove 102, the positioning parts 104 from different directions prevent it from shifting horizontally. This makes the fit between the terminal base plate 112 and the terminal base plate more tight and precise, further reducing the possibility of electrolyte accumulation in the gap between the two, effectively improving the battery's insulation performance, reducing the risk of internal short circuits, and enhancing the battery's reliability and safety.

[0041] According to one embodiment of the present invention, the positioning part includes a first positioning part and a second positioning part. The first positioning part is formed on the first groove sidewall 106, and the first positioning parts on the two first groove sidewalls 106 correspond one-to-one. The second positioning part is formed on the second groove sidewall 108, and the second positioning parts on the two second groove sidewalls 108 correspond one-to-one.

[0042] In one embodiment of this utility model, first positioning parts are arranged in a certain pattern on the side wall 106 of the first groove. The first positioning parts on the two side walls 106 of the first groove are in a one-to-one correspondence with each other. For example, the first positioning parts on the two side walls are at the same horizontal height or arranged according to a specific spacing pattern. The same design and manufacturing process are adopted for the second positioning parts on the side wall 108 of the second groove to ensure that its positioning parts 104 are also one-to-one. When installing the pole post base plate 112, the positioning structure at the corresponding position on the pole post base plate 112 can accurately cooperate with the first positioning parts and the second positioning parts.

[0043] The one-to-one correspondence design of the first positioning parts on the two first slot sidewalls 106 and the one-to-one correspondence design of the second positioning parts on the two second slot sidewalls 108 greatly improves the convenience and accuracy of installing the terminal base plate 112. During installation, operators can more easily align the terminal base plate 112 with the positioning parts 104, reducing trial and error and adjustment time during installation. Moreover, the precise correspondence ensures that the terminal base plate 112 is subjected to uniform force in all directions after installation, further improving the tightness of its fit with the terminal base plate, better avoiding electrolyte accumulation problems, and ensuring the stability and safety of battery performance.

[0044] According to one embodiment of the present invention, a first positioning portion on one first groove sidewall 106 protrudes toward another first groove sidewall 106, and a second positioning portion on one second groove sidewall 108 protrudes toward another second groove sidewall 108.

[0045] In one embodiment of this utility model, such as Figure 2 As shown, the first positioning part on the lower left sidewall 106 of the first groove protrudes towards the upper right sidewall 106, and the second positioning part on the upper left sidewall 108 of the second groove protrudes towards the lower right sidewall 108. The protruding first and second positioning parts can be more deeply embedded into the corresponding positioning structures of the electrode base plate 112, enhancing the connection and positioning effect between them. This tight fit effectively reduces the gap between the electrode base plate 112 and the electrode base plate, preventing electrolyte accumulation in the gap, reducing the risk of internal short circuits in the battery, and thus improving battery performance and safety.

[0046] According to one embodiment of the present invention, the positioning part 104 has a chamfer 110 formed on the edge of the groove bottom away from the mounting groove 102.

[0047] In one embodiment of this utility model, the edge portion of the positioning part 104 facing away from the bottom of the mounting groove 102 is designed with a chamfered edge 110 at a certain angle. The angle of the chamfered edge 110 can be set between 30 degrees and 60 degrees, for example, and the specific angle is determined according to the size of the positioning part 104 and the actual application scenario. For example, for a smaller positioning part 104, the chamfered edge 110 angle can be appropriately reduced to ensure the strength of the positioning part 104; for a larger positioning part 104, the chamfered edge 110 angle can be appropriately increased to facilitate the installation of the pole base plate 112.

[0048] The chamfered edge 110 of the positioning part 104 provides excellent guidance during the installation of the terminal base plate 112. When the terminal base plate 112 is installed into the mounting groove 102, the chamfered edge 110 makes it easier for the terminal base plate 112 to align with the positioning part 104, reducing installation resistance and preventing scratches to the terminal base plate 112 due to the sharp edge of the positioning part 104. Simultaneously, the chamfered edge 110 also disperses stress generated during installation, preventing cracking or damage to the edge of the positioning part 104 due to stress concentration, thus improving the reliability and service life of the positioning part 104 and ensuring the stability of the overall battery structure.

[0049] According to one embodiment of the present invention, the positioning part 104 and the mounting groove 102 are integrally formed.

[0050] In one embodiment of this utility model, during the production of the lower plastic 100, injection molding can be used to integrally form the positioning part 104 and the mounting groove 102. This integral molding method significantly improves the connection strength between the positioning part 104 and the mounting groove 102. Compared to later methods such as welding or gluing to connect the positioning part 104 and the mounting groove 102, integral molding eliminates the problem of loosening or detachment at the connection points, enhancing the structural stability of the cover assembly. Furthermore, integral molding reduces production steps, improves production efficiency, and lowers production costs. Simultaneously, since the positioning part 104 and the mounting groove 102 are a single unit, there are no assembly errors, allowing for more precise positioning of the electrode base plate 112, effectively improving the manufacturing precision and quality of the battery.

[0051] According to one embodiment of the present invention, the positioning part 104 is provided with an anti-slip structure on the side facing the pole base plate 112.

[0052] In one embodiment of this invention, by machining tiny protrusions on the mold surface, a corresponding raised anti-slip structure is formed on the positioning part 104 after injection molding. The size and shape of these anti-slip structures are designed according to the material and surface characteristics of the pole base plate 112. For example, the protrusion height is generally between 0.1 mm and 0.5 mm to ensure that sufficient friction is provided without negatively affecting the installation and performance of the pole base plate 112.

[0053] The anti-slip structure effectively increases the friction between the positioning part 104 and the terminal base plate 112. When the terminal base plate 112 is installed in the mounting groove 102, the anti-slip structure prevents the terminal base plate 112 from sliding on the positioning part 104. Even when the battery is subjected to external forces such as vibration or shaking, the terminal base plate 112 can maintain a stable installation state. This further enhances the fit stability between the terminal base plate and the terminal base plate 112, reduces electrolyte accumulation and battery performance degradation caused by displacement of the terminal base plate 112, and improves the reliability and safety of the battery.

[0054] A second aspect of this utility model provides a housing, including the cover plate assembly described above.

[0055] The housing provided in the second aspect embodiment of this utility model is mainly composed of a cover plate body and the aforementioned cover plate assembly.

[0056] During installation, it is essential to ensure the cover assembly is accurately positioned on the housing. Accordingly, positioning marks or structures can be installed on both the housing and the cover assembly to assist operators in precise installation. Once installed, the cover assembly and housing form a unified whole, constituting a crucial component of the battery cover.

[0057] According to the second aspect of the present invention, the housing is enhanced in terms of structural strength and stability by incorporating the cover plate assembly into the housing. The cover plate assembly is fixed to the housing via a reasonable connection method, effectively dispersing external forces and vibrations experienced by the battery during use, preventing damage to the cover plate due to excessive localized stress, thereby improving the overall reliability and lifespan of the battery.

[0058] A third aspect of this utility model provides a battery, including the cover plate assembly described above;

[0059] Or the aforementioned casing.

[0060] When the battery includes a cover assembly, the cover assembly is a critical part of the battery structure. The mounting groove 102 on the lower plastic 100 precisely fits the terminal base plate 112, and the positioning part 104 ensures that the terminal base plate 112 is installed in place.

[0061] When the battery includes the aforementioned casing, the casing is composed of a cover plate assembly. The cover plate is installed on top of the battery and serves to protect the internal structure of the battery and seal the battery.

[0062] According to the battery provided in the third aspect embodiment of this utility model, the cover assembly, through the cooperation of the terminal base plate and the positioning part, effectively prevents internal short circuits in the battery, reduces the risk of battery overheating, fire, or even explosion, and ensures safety during battery use. The tight connection between the cover and the battery casing effectively improves the battery's sealing performance, extends the battery's service life, and reduces battery performance degradation and safety hazards caused by electrolyte leakage.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cover plate assembly, characterized in that, include: The lower plastic has a mounting groove formed on it for mounting the pole base plate; A positioning part is formed on the side wall of the mounting groove. When the pole base plate is installed in the mounting groove, the positioning part is positioned and engaged with the pole base plate.

2. The cover plate assembly according to claim 1, characterized in that, The positioning part is a plurality of parts, and the plurality of positioning parts are spaced apart along the side wall of the mounting groove.

3. The cover plate assembly according to claim 2, characterized in that, The mounting groove includes a pair of first groove sidewalls disposed opposite to each other and a second groove sidewall disposed adjacent to the pair of first groove sidewalls, and the positioning part is formed on both the first groove sidewall and the second groove sidewall.

4. The cover plate assembly according to claim 3, characterized in that, The positioning part includes a first positioning part and a second positioning part. The first positioning part is formed on the side wall of the first groove, and the first positioning parts on the two side walls of the first groove correspond one-to-one. The second positioning part is formed on the side wall of the second groove, and the second positioning parts on the two side walls of the second groove correspond one-to-one.

5. The cover plate assembly according to claim 4, characterized in that, The first positioning part on one of the first groove sidewalls protrudes toward the other first groove sidewall, and the second positioning part on one of the second groove sidewalls protrudes toward the other second groove sidewall.

6. The cover plate assembly according to claim 1, characterized in that, The positioning part has a chamfered edge at the edge opposite to the bottom of the mounting groove.

7. The cover plate assembly according to any one of claims 1 to 6, characterized in that, The positioning part is integrally formed with the mounting groove.

8. The cover plate assembly according to any one of claims 1 to 6, characterized in that, The positioning part is provided with an anti-slip structure on the side facing the pole base plate.

9. A housing, characterized in that, Includes the cover plate assembly as described in any one of claims 1 to 8.

10. A battery, characterized in that, Includes the cover plate assembly as described in any one of claims 1 to 8; Or the housing as described in claim 9.

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