Battery cover plate and battery monomer

Abstract

The utility model discloses a battery cover plate and a battery monomer. The battery cover plate comprises a cover body and a cover plate, the upper insulating part and the lower insulating part are arranged on the two sides of the cover body in the thickness direction respectively; the pole penetrates through the cover body, the upper insulating part and the lower insulating part, and the upper insulating part is connected with the cover body and the pole in an injection molding manner. According to the battery cover plate disclosed by the utility model, the upper insulating part is connected with the cover body and the pole column through injection molding while the upper insulating part is subjected to injection molding, and riveting blocks can be reduced, so that the structure of the battery cover plate is simplified, and the cost is reduced; and the injection molding of the upper insulating part and the injection molding connection between the upper insulating part and the cover body and between the upper insulating part and the pole can be carried out simultaneously, so that the process is simplified and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery cover plate and battery monomer. BACKGROUND

[0002] At present, the battery cover plate generally includes the cover plate body, sets up the upper plastic and the lower plastic on the both sides of the cover plate body thickness direction, the pole passes and sets up in the cover plate body, the upper plastic and the lower plastic, realizes the riveting between the cover plate body, the pole, the upper plastic and the lower plastic through the riveting block, the structure and the process are relatively complex, and the production cost is higher, and the production efficiency is low. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems in prior art, for this purpose, the utility model provides a battery cover plate, the battery cover plate simplifies the structure, reduces the cost, and simplifies the process, improves the production efficiency.

[0004] The utility model discloses still proposed a kind of battery monomer, including above-mentioned battery cover plate.

[0005] According to the battery cover plate of the utility model embodiment, including: cover body;Upper insulating piece and lower insulating piece, the upper insulating piece and the lower insulating piece are respectively arranged on the both sides of the thickness direction of the cover body;Pole, the pole passes and sets up in the cover body, upper insulating piece and lower insulating piece, the upper insulating piece is injection-molded with the cover body and the pole.

[0006] According to the battery cover plate of the utility model embodiment, through the upper insulating piece and the lower insulating piece are respectively arranged on the both sides of the thickness direction of the cover body;Pole passes and sets up in the cover body, upper insulating piece and lower insulating piece, the upper insulating piece is injection-molded with the cover body and the pole, so that, while injection-molding the upper insulating piece, the upper insulating piece is injection-molded with the cover body and the pole, can reduce the setting of riveting block, thereby simplify the structure of battery cover plate, reduce cost, and injection-molding the upper insulating piece and the injection-molding connection between the upper insulating piece and the cover body and the pole can be carried out simultaneously, simplify the process, improve the production efficiency.

[0007] In some embodiments of the utility model, the cover body is provided with a mounting hole, the pole passes and sets up in the mounting hole, the mounting hole is provided with a first protrusion on the hole wall, the first protrusion is annular along the circumferential direction of the mounting hole, at least part of the upper insulating piece is arranged in the mounting hole, the upper insulating piece is arranged on the side of the first protrusion away from the lower insulating piece and is injection-molded with the first protrusion.

[0008] In some embodiments of the utility model, the side of the first protrusion facing the upper insulating piece has a limiting groove, and the side of the upper insulating piece facing the first protrusion has a limiting boss matched with the limiting groove; and / or, the side of the first protrusion facing the upper insulating piece has a limiting boss, and the side of the upper insulating piece facing the first protrusion has a limiting groove matched with the limiting boss.

[0009] In some embodiments of the utility model, the limiting grooves are spaced apart in the circumferential direction of the mounting hole, and the limiting bosses are one-to-one corresponding to the limiting grooves.

[0010] In some embodiments of the utility model, the width of the first protrusion is 0.8mm-5mm; and / or, the thickness of the cover body is h, and the distance between the side of the first protrusion away from the lower insulating piece and the side of the cover body away from the lower insulating piece is less than or equal to 0.6h.

[0011] In some embodiments of the utility model, the cover body has an explosion-proof hole, the lower insulating piece has a first communication hole, the first communication hole and the explosion-proof hole are oppositely arranged in the thickness direction of the cover body, and the battery cover plate further comprises: an explosion-proof valve arranged in the explosion-proof hole and connected with the cover body.

[0012] In some embodiments of the utility model, the side of the lower insulating piece away from the cover body has a second protrusion, and the second protrusion is adapted to abut against the pole group.

[0013] In some embodiments of the utility model, the side of the second protrusion facing the cover body has a groove, and the groove bottom wall has a second communication hole.

[0014] In some embodiments of the utility model, the second protrusion is a plurality of spaced apart.

[0015] The battery monomer according to the embodiments of the utility model comprises the battery cover plate.

[0016] According to the battery monomer of the embodiments of the utility model, by arranging the battery cover plate, the upper insulating piece and the lower insulating piece are arranged on the two sides of the thickness direction of the cover body respectively; the pole column is arranged through the cover body, the upper insulating piece and the lower insulating piece, the upper insulating piece is injection molded with the cover body and the pole column, so that the upper insulating piece is injection molded with the cover body and the pole column at the same time, the setting of the riveting block can be reduced, thereby the structure of the battery cover plate is simplified, the cost is reduced, the injection molding of the upper insulating piece and the injection molding connection between the upper insulating piece and the cover body and the pole column can be carried out at the same time, the process is simplified, and the production efficiency is improved.

[0017] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is an exploded view of the battery cover plate according to an embodiment of the present application;

[0020] Figure 2 is a top view of the battery cover plate according to an embodiment of the present application;

[0021] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0022] Figure 4 is a top view of the lower insulating member of the battery cover plate according to an embodiment of the present application.

[0023] REFERENCE NUMERALS:

[0024] 10, battery cover plate;

[0025] 1, cover body; 11, mounting hole; 12, first protrusion; 121, limiting groove; 13, explosion-proof hole; 14, liquid injection hole;

[0026] 2, upper insulating member; 21, second assembly hole; 22, third protrusion;

[0027] 3, lower insulating member; 31, first communication hole; 32, second protrusion; 321, groove; 322, second communication hole; 33, first assembly hole;

[0028] 4, pole; 41, base; 42, connecting portion; 43, annular groove;

[0029] 5, sealing ring;

[0030] 6, explosion-proof valve. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

[0032] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] The following refers to Figures 1-4 The battery cover plate 10 according to the embodiment of the utility model is described.

[0035] As Figures 1-4 Indicated, according to the battery cover plate 10 of the utility model embodiment, including: cover body 1, pole 4, upper insulating part 2 and lower insulating part 3.

[0036] Specifically, referring to Figures 1-3 Upper insulating part 2 and lower insulating part 3 are respectively arranged on both sides of the thickness direction of cover body 1, pole 4 is arranged in cover body 1, upper insulating part 2 and lower insulating part 3, and upper insulating part 2 is injection molded with cover body 1 and pole 4.

[0037] It can be understood that the battery cover plate 10 further comprises a sealing ring 5 sleeved on the pole 4, the sealing ring 5 is in interference fit between the pole 4 and the cover body 1, so as to realize the sealing between the pole 4 and the cover body 1, the pole 4 is arranged through the cover body 1 and the lower insulating piece 3, so as to complete the preliminary assembly between the pole 4, the cover body 1 and the lower insulating piece 3. It should be noted that the pole 4 comprises a connecting portion 42 and a base portion 41 connected with each other, the connecting portion 42 is arranged through the cover body 1 and the lower insulating piece 3, the sealing ring 5 is sleeved on the connecting portion 42, the base portion 41 is arranged on the side of the lower insulating piece 3 away from the cover body 1, the lower insulating piece 3 has a first assembly hole 33 for the connecting portion 42 to pass through, the diameter of the base portion 41 is greater than the diameter of the first assembly hole 33, so that the movement of the lower insulating piece 3 towards the side away from the cover body 1 can be limited.

[0038] Further, the upper insulating piece 2 is an injection molding piece, the injection molding of the upper insulating piece 2 is simultaneously realized, and the injection molding connection of the upper insulating piece 2 with the cover body 1 and the pole 4 is realized, so that the connection and fixation between the upper insulating piece 2, the cover body 1, the lower insulating piece 3 and the pole 4 are realized. At the same time, the injection molding connection of the upper insulating piece 2 with the cover body 1 and the pole 4 can reduce the setting of the riveting block, so as to simplify the structure of the battery cover plate 10 and reduce the cost. In addition, since the injection molding of the upper insulating piece 2 and the injection molding connection between the upper insulating piece 2 and the cover body 1 and the pole 4 can be simultaneously performed, compared with manufacturing the upper insulating piece 2 first and then assembling the upper insulating piece 2 with the cover body 1 and the pole 4, the process is simplified and the production efficiency is improved.

[0039] Further, as shown in Figures 1-3 the upper insulating piece 2 has a second assembly hole 21, the pole 4 is arranged through the second assembly hole 21, the second assembly hole 21 has a third protrusion 22 on the hole wall, the third protrusion 22 is an annular extending along the circumferential direction of the second assembly hole 21, the pole 4 has an annular groove 43 matched with the third protrusion 22, so that the upper insulating piece 2 and the pole 4 can be limited by the cooperation of the annular groove 43 and the third protrusion 22, thereby improving the connection reliability between the upper insulating piece 2 and the pole 4, and improving the assembly stability and reliability.

[0040] Further, as shown in Figure 1 the cover body 1 and the lower insulating piece 3 both have liquid injection holes 14, so as to facilitate the injection of electrolyte into the battery monomer, so that the battery monomer can work normally.

[0041] According to the battery cover plate 10 of the embodiment of the utility model, through the upper insulating piece 2 and the lower insulating piece 3 are arranged on the two sides of the thickness direction of the cover body 1 respectively, the pole 4 is arranged in the cover body 1, the upper insulating piece 2 and the lower insulating piece 3, the upper insulating piece 2 is connected with the cover body 1 and the pole 4 by injection molding, so that the upper insulating piece 2 is connected with the cover body 1 and the pole 4 by injection molding at the same time of injection molding the upper insulating piece 2, the structure of the battery cover plate 10 can be simplified, the cost is reduced, and the injection molding of the upper insulating piece 2 and the injection molding connection between the upper insulating piece 2 and the cover body 1 and the pole 4 can be carried out at the same time, the process is simplified, and the production efficiency is improved.

[0042] In some embodiments of the utility model, as shown in Figures 1-3 The cover body 1 has a mounting hole 11, and the pole 4 is arranged in the mounting hole 11. At least part of the upper insulating piece 2 is arranged in the mounting hole 11. The upper insulating piece 2 has a second assembly hole 21. The pole 4 includes a connecting portion 42 and a base portion 41 connected with each other. The base portion 41 is arranged on the side of the lower insulating piece 3 away from the cover body 1. The connecting portion 42 is arranged in the second assembly hole 21. The end of the connecting portion 42 away from the base portion 41 is flush with the end of the upper insulating piece 2 away from the lower insulating piece 3.

[0043] It can be understood that, since at least part of the upper insulating piece 2 is arranged in the mounting hole 11, the upper insulating piece 2 can share the space in the thickness direction of the cover body 1 with the mounting hole 11. The distance between the end of the upper insulating piece 2 away from the lower insulating piece 3 and the lower insulating piece 3 is shortened. The distance between the end of the connecting portion 42 away from the base portion 41 and the base portion 41 is shortened. Therefore, the length of the pole 4 in the thickness direction of the cover body 1 can be reduced, the material of the pole 4 is reduced, and the cost is further reduced.

[0044] Further, as shown in Figures 1-3 The mounting hole 11 has a first protrusion 12 on the hole wall. The first protrusion 12 is annular and extends in the circumferential direction of the mounting hole 11. The upper insulating piece 2 is arranged on the side of the first protrusion 12 away from the lower insulating piece 3 and is injection molded with the first protrusion 12. In this way, the first protrusion 12 can support the upper insulating piece 2, improve the installation stability and reliability of the upper insulating piece 2. The inner circumferential wall of the mounting hole 11 and the side of the first protrusion 12 facing the upper insulating piece 2 are both injection molded with the first protrusion 12. The connection area between the cover body 1 and the upper insulating piece 2 is increased, the injection molding quality is improved, and the connection reliability between the cover body 1 and the upper insulating piece 2 is improved.

[0045] In some embodiments of the utility model, as shown in Figures 1-3As shown, the side of the first protrusion 12 facing the upper insulating piece 2 is provided with a limiting groove 121, and the side of the upper insulating piece 2 facing the first protrusion 12 is provided with a limiting boss (not shown) matched with the limiting groove 121. It can be understood that through the mutual cooperation of the limiting boss and the limiting groove 121, the mutual rotation between the upper insulating piece 2 and the cover body 1 can be avoided, thereby not only improving the connection reliability between the upper insulating piece 2 and the cover body 1, but also improving the sealing efficiency of the battery cover plate 10 and avoiding electrolyte leakage.

[0046] In some embodiments of the utility model, the side of the first protrusion 12 facing the upper insulating piece 2 is provided with a limiting boss, and the side of the upper insulating piece 2 facing the first protrusion 12 is provided with a limiting groove 121 matched with the limiting boss. It can be understood that through the mutual cooperation of the limiting boss and the limiting groove 121, the mutual rotation between the upper insulating piece 2 and the cover body 1 can be avoided, thereby not only improving the connection reliability between the upper insulating piece 2 and the cover body 1, but also improving the sealing efficiency of the battery cover plate 10 and avoiding electrolyte leakage.

[0047] In some embodiments of the utility model, as shown, Figures 1-3 The limiting groove 121 is a plurality of limiting grooves spaced apart along the circumferential direction of the mounting hole 11, and the limiting protrusion is a plurality of limiting protrusions corresponding to the plurality of limiting grooves 121. Therefore, the mutual rotation between the upper insulating piece 2 and the cover body 1 is further avoided, thereby not only improving the connection reliability between the upper insulating piece 2 and the cover body 1, but also improving the sealing efficiency of the battery cover plate 10 and avoiding electrolyte leakage.

[0048] In some embodiments of the utility model, the width (width along the radial direction of the cover body 1) of the first protrusion 12 is 0.8mm-5mm; for example, 0.8mm, 1.2mm, 2mm or 5mm, etc. Therefore, the first protrusion 12 has a suitable width, which can not only avoid the first protrusion 12 being too wide and affecting the diameter of the pole 4, but also ensure that the first protrusion 12 has sufficient connection area with the upper insulating piece 2, thereby ensuring the injection quality and injection reliability and the connection reliability between the cover body 1 and the upper insulating piece 2.

[0049] In some embodiments of the utility model, the thickness of the cover body 1 is h, and the distance between the side of the first protrusion 12 away from the lower insulating piece 3 and the side of the cover body 1 away from the lower insulating piece 3 is less than or equal to 0.6h, for example, 0.1h, 0.2h, 0.5h or 0.6h. Therefore, the thickness of the first protrusion 12 along the thickness direction of the cover body 1 can be avoided to be too small, thereby ensuring the strength of the first protrusion 12, the strength of the cover body 1, and the connection reliability between the cover body 1 and the upper insulating piece 2.

[0050] In some embodiments of the utility model, as shown in Figure 1 And Figure 4 As shown, the cover body 1 has an explosion-proof hole 13, and the lower insulating piece 3 has a first communication hole 31, and the first communication hole 31 is arranged opposite to the explosion-proof hole 13 in the thickness direction of the cover body 1, and the battery cover plate 10 further comprises: an explosion-proof valve 6, which is arranged in the explosion-proof hole 13 and connected (such as welding) with the cover body 1.

[0051] It can be understood that the first communication hole 31 is arranged on the lower insulating piece 3, and when the pole group is out of control, the abnormal gas can be discharged from the first communication hole 31 to the explosion-proof hole 13, so as to break the explosion-proof valve 6 and discharge, thereby the arrangement of the first communication hole 31 enables the abnormal gas to be discharged smoothly, and the safety of the battery monomer is improved.

[0052] Further, the communication hole is a plurality of spaced apart along the length direction of the explosion-proof hole 13, thereby further facilitating the discharge of the abnormal gas, and further improving the safety of the battery monomer.

[0053] In some embodiments of the utility model, as shown in Figure 1 And Figure 4 As shown, the side of the lower insulating piece 3 away from the cover body 1 has a second protrusion 32, and the second protrusion 32 is suitable for abutting against the pole group. It can be understood that the second protrusion 32 can limit and support the pole group, thereby avoiding the movement of the pole group.

[0054] In some embodiments of the utility model, as shown in Figure 1 And Figure 4 As shown, the side of the second protrusion 32 toward the cover body 1 has a groove 321, and the groove 321 has a second communication hole 322 on the bottom wall. It can be understood that during the transportation and normal use of the battery monomer, part of the electrolyte will flow between the cover body 1 and the lower insulating piece 3, and the arrangement of the groove 321 and the second communication hole 322 enables the electrolyte to flow back to the space where the pole group is located, thereby enabling the battery monomer to work normally.

[0055] In some embodiments of the utility model, as shown in Figure 1 And Figure 4 As shown, the second protrusion 32 is a plurality of spaced apart. Thus, the effect of limiting and supporting the pole group is improved, and the movement of the pole group is further avoided.

[0056] According to the battery monomer of the utility model embodiment, the battery cover plate 10 is arranged.

[0057] According to the battery monomer provided by the embodiment of the utility model, through the battery cover plate 10, the upper insulating part 2 and the lower insulating part 3 are respectively arranged on the two sides of the thickness direction of the cover body 1, the pole 4 is arranged in the cover body 1, the upper insulating part 2 and the lower insulating part 3, the upper insulating part 2 is connected with the cover body 1 and the pole 4 through injection molding, the upper insulating part 2 is connected with the cover body 1 and the pole 4 through injection molding at the same time of injection molding the upper insulating part 2, the setting of the riveting block can be reduced, so that the structure of the battery cover plate 10 is simplified, the cost is reduced, and the injection molding of the upper insulating part 2 and the injection molding connection between the upper insulating part 2 and the cover body 1 and the pole 4 can be carried out at the same time, the process is simplified, and the production efficiency is improved.

[0058] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the exemplary description of the above terms does 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.

[0059] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A battery cover plate, characterized by, The battery cover plate comprises: a cover body; upper and lower insulating members arranged on both sides of the cover body in the thickness direction; a pole column penetrating the cover body, the upper and lower insulating members, and being injection-molded with the cover body and the upper insulating member.

2. The battery cover plate of claim 1, wherein, The cover body has a mounting hole in which the pole column penetrates, and a first protrusion extending in the circumferential direction of the mounting hole is arranged on the hole wall of the mounting hole. At least part of the upper insulating member is arranged in the mounting hole, and the upper insulating member is arranged on the side of the first protrusion away from the lower insulating member and is injection-molded with the first protrusion.

3. The battery cover plate of claim 2, wherein, The side of the first protrusion facing the upper insulating member has a limiting groove, and the side of the upper insulating member facing the first protrusion has a limiting boss matched with the limiting groove. The side of the first protrusion facing the upper insulating member has a limiting boss, and the side of the upper insulating member facing the first protrusion has a limiting groove matched with the limiting boss.

4. The battery cover plate of claim 3, wherein, The limiting grooves are spaced apart in the circumferential direction of the mounting hole, and the limiting bosses correspond one-to-one to the limiting grooves.

5. The battery cover plate of claim 2, wherein, The width of the first protrusion is 0.8-5 mm. The thickness of the cover body is h, and the distance between the side of the first protrusion away from the lower insulating member and the side of the cover body away from the lower insulating member is less than or equal to 0.6h.

6. The battery cover plate of claim 1, wherein, The cover body has an explosion-proof hole, and the lower insulating member has a first communication hole arranged opposite the explosion-proof hole in the thickness direction of the cover body. The battery cover plate further comprises: an explosion-proof valve arranged in the explosion-proof hole and connected with the cover body.

7. The battery cover plate of claim 1, wherein, The side of the lower insulating member away from the cover body has a second protrusion adapted to abut against a pole group.

8. The battery cover plate of claim 7, wherein, The side of the second protrusion facing the cover body has a groove, and the groove bottom wall has a second communication hole.

9. The battery cover plate of claim 7, wherein, The second protrusion is spaced apart.

10. A battery cell characterized by, The battery cover plate comprises any one of claims 1-9.

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