Pole, battery cover plate and battery

Abstract

The utility model discloses a pole, battery cover plate and battery, the pole includes main part, first connecting part and second connecting part, the main part passes through the mounting hole, the main part is provided with avoiding groove, the opening of avoiding groove faces the cover plate body departing from the pole group side, the opening of avoiding groove and the bottom wall of avoiding groove are arranged oppositely; the first connecting part is connected to the peripheral side of the main body part and located on the side, away from the pole group, of the cover plate body, and the first connecting part and the cover plate body are arranged at an interval; the second connecting part is connected to the peripheral side of the main body part and located on the side, close to the pole group, of the cover plate body, and the second connecting part and the cover plate body are arranged in a spaced mode. According to the pole disclosed by the utility model, the avoiding groove is formed in the main body part of the pole, and the bottom wall of the avoiding groove is connected with the tab, so that the assembly process is simplified, the avoiding groove limits the connection position of the tab and the pole, the assembly deviation of the tab and the pole is avoided, and the assembly effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a pole, a battery cover and a battery. Background Art

[0002] In the related art, the connection method between the pole and the lug of the battery cover is generally to first weld the pole and the connecting plate to each other, and then weld the connecting plate and the lug together. There are many welding steps, a complex structure, and poor structural stability. In addition, during the connection process, the pole and the lug need to be positioned separately to achieve welding connection with the connecting plate, and the assembly process is complicated. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a pole, wherein a avoidance groove is arranged on the main body of the pole, and the bottom wall of the avoidance groove is connected to the pole ear, which simplifies the assembly process, and the avoidance groove limits the connection position of the pole ear and the pole, avoids deviation in the assembly of the pole ear and the pole, and improves the assembly effect.

[0004] The utility model also provides a battery cover plate with the pole.

[0005] The utility model also provides a battery with the battery cover plate.

[0006] According to the first aspect of the utility model, the pole is used for a battery cover, and the battery cover has a mounting hole, and the pole comprises: a main body, the main body is inserted into the mounting hole, the main body has a avoidance groove, the opening of the avoidance groove faces the side of the cover body away from the pole group, and the opening of the avoidance groove is arranged opposite to the bottom wall of the avoidance groove; a first connecting part, the first connecting part is connected to the outer peripheral side of the main body, and is located on the side of the cover body away from the pole group, and the first connecting part is spaced apart from the cover body; a second connecting part, the second connecting part is connected to the outer peripheral side of the main body, and is located on the side of the cover body close to the pole group, and the second connecting part is spaced apart from the cover body.

[0007] According to the pole of the embodiment of the utility model, the pole includes a main body, a first connecting part and a second connecting part which are connected to each other. The first connecting part is located on the outer side of the cover body, and the second connecting part is located on the inner side of the cover body. An avoidance groove is arranged on the main body, and the bottom wall of the avoidance groove is connected to the pole ear. The avoidance groove limits the connection position of the pole ear and the pole, avoids deviation in the assembly of the pole ear and the pole, and improves the assembly effect.

[0008] According to some embodiments of the present invention, the pole ear has a first surface disposed toward the battery cover, the surface of the bottom wall facing the pole group is a second surface, and the first surface is parallel to the second surface.

[0009] According to some embodiments of the present invention, the height of the tab is d, satisfying 0.8 mm ≤ d ≤ 2.5 mm; the thickness of the bottom wall is L, satisfying 0.4 mm ≤ L ≤ 1.2 mm.

[0010] According to some embodiments of the present invention, the area of ​​the bottom wall is M, which satisfies 25 mm 2 ≤L≤40mm 2 .

[0011] According to some embodiments of the present invention, the second connecting portion is coplanar with the bottom wall.

[0012] According to some embodiments of the present invention, the pole is an integrally formed part.

[0013] The battery cover according to the second aspect of the present invention comprises: the pole according to the first aspect of the present invention.

[0014] According to the battery cover plate of the embodiment of the utility model, by setting the above-mentioned pole, the connection position of the pole ear and the pole is limited, the deviation of the assembly of the pole ear and the pole is avoided, and the assembly effect is improved; at the same time, the pole ear has a first plane, the first plane is fixed to the second plane of the pole, which can reduce the space occupied by the pole ear, and then the energy density of the pole group can be improved.

[0015] According to some embodiments of the present invention, the battery cover includes: a sealing plate, which is located at the opening and fixedly connected to the main body, and is used to close the opening.

[0016] According to some embodiments of the present utility model, the inner peripheral wall of the avoidance groove has a sink that cooperates with the sealing plate.

[0017] A battery according to an embodiment of the third aspect of the utility model includes: a battery cover according to an embodiment of the second aspect of the utility model.

[0018] According to the battery of the embodiment of the utility model, by providing the above-mentioned battery cover, the connection position of the pole ear and the pole is limited, the deviation of the assembly of the pole ear and the pole is avoided, and the assembly effect is improved; at the same time, the space occupied by the pole ear is reduced, thereby improving the energy density of the battery.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a battery according to some embodiments of the utility model;

[0022] Figure 2 yes Figure 1 A top view of the battery;

[0023] Figure 3 yes Figure 2 Sectional view along line AA;

[0024] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0025] Figure 5 is a schematic diagram of a battery cover according to some embodiments of the utility model;

[0026] Figure 6 yes Figure 5 A top view of the middle battery cover;

[0027] Figure 7 yes Figure 6 Sectional view along line CC;

[0028] Figure 8 is a schematic diagram of a pole according to some embodiments of the utility model;

[0029] Fig. 9 yes Figure 8 Top view of the middle pole;

[0030] Fig.10 yes Fig. 9 Sectional view along line DD;

[0031] Fig.11 is a schematic diagram of a pole group according to some embodiments of the utility model;

[0032] Fig.12 yes Fig.11 Top view of the middle pole group;

[0033] Fig.13 yes Fig.12 Cross-sectional view along line EE.

[0034] Reference numerals:

[0035] 10. Battery;

[0036] 1. Battery cover; 11. Sealing plate;

[0037] 2. Pole; 21. Main body; 211. Avoidance groove; 2111. Sink; 212. Bottom wall; 22. First connecting part; 23. Second connecting part;

[0038] 31. Shell; 32. Pole group; 33. Pole ear; 331. First surface; 34. Cover plate body; 35. Upper plastic part; 36. Lower plastic part; 37. Sealing ring. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0041] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Reference below Figure 1-Figure 13 The pole 2 according to the embodiment of the present invention is described.

[0043] According to the pole 2 of the embodiment of the first aspect of the utility model, the pole 2 is used for the battery cover 1, and the battery cover 1 includes a cover body 34, and the cover body 34 has a mounting hole, and the mounting hole penetrates the cover body 34 along the thickness direction of the cover body 34.

[0044] The pole 2 includes a main body 21, a first connection part 22 and a second connection part 23. The first connection part 22 is connected to the outer peripheral side of the main body 21, and the second connection part 23 is connected to the outer peripheral side of the main body 21. The first connection part 22 and the second connection part 23 are arranged at intervals, and the pole 2 can be constructed in an "I" shape. The main body 21 is penetrated in the mounting hole, and the first connection part 22 is located on the side of the cover body 34 away from the pole group 32, that is, the first connection part 22 is located on the outside of the cover body 34; the second connection part 23 is located on the side of the cover body 34 close to the pole group 32, that is, the second connection part 23 is located on the inside of the cover body 34; the first connection part 22 is arranged at intervals with the cover body 34, and the second connection part 23 is arranged at intervals with the cover body 34, so as to avoid the pole 2 from contacting the cover body 34 and causing a short circuit of the battery 10. At the same time, the first connection part 22 and the second connection part 23 are respectively abutted against both sides of the thickness direction of the battery cover 1, so as to fix the pole 2 to the battery cover 1.

[0045] The battery cover plate 1 has a certain thickness, and the main body 21 of the pole 2 is inserted into the mounting hole of the battery cover plate 1, and the two ends extend out of the mounting hole respectively, and the pole ear 33 is fixedly connected to the main body 21. Since the main body 21 has a certain thickness, it is not convenient to fix the pole ear 33 to the main body 21. Therefore, an avoidance groove 211 is provided on the main body 21, and the opening of the avoidance groove 211 faces the side of the cover plate body 34 away from the pole group 32, that is, the opening of the avoidance groove 211 faces the outside of the cover plate body 34, and the opening of the avoidance groove 211 is arranged opposite to the bottom wall 212 of the avoidance groove 211. The installation tool is suitable for fixing the pole ear 33 and the bottom wall 212 through the avoidance groove 211, which simplifies the assembly process, and the avoidance groove 211 limits the connection position of the pole ear 33 and the pole 2, avoiding the deviation of the assembly of the pole ear 33 and the pole 2, and improving the assembly effect.

[0046] The battery 10 includes a housing 31 and a pole group 32, the pole group 32 is located in the housing 31, and a pole ear 33 is connected to one side of the pole group 32. When the battery cover 1 is fixed to the housing 31, the pole ear 33 contacts the pole 2, and an installation tool can be used to extend into the avoidance groove 211 to fix the pole ear 33 and the bottom wall 212 of the pole 2. For example, the installation tool can be an electric welder, and the electric welder can weld and fix the bottom wall 212 of the pole 2 and the pole ear 33.

[0047] According to the pole 2 of the embodiment of the utility model, the pole 2 includes a connected main body 21, a first connecting part 22 and a second connecting part 23, the first connecting part 22 is located on the outer side of the battery cover 1, and the second connecting part 23 is located on the inner side of the battery cover 1, and is used to fix the pole 2 to the battery cover 1; and an avoidance groove 211 is provided on the main body 21, and the bottom wall 212 of the avoidance groove 211 is connected to the pole ear 33, which simplifies the assembly process, and the avoidance groove 211 limits the connection position of the pole ear 33 and the pole 2, avoids the deviation of the assembly of the pole ear 33 and the pole 2, and improves the assembly effect.

[0048] According to some embodiments of the present invention, referring to Figure 3-Figure 4 , Figure 8-Figure 13 The pole lug 33 has a first surface 331 set toward the battery cover 1, and the surface of the bottom wall 212 facing the pole group 32 is the second surface. The first surface 331 is parallel to the second surface, which can increase the connection area between the first surface 331 of the pole lug 33 and the second plane of the pole 2 to increase the connection strength between the pole lug 33 and the pole 2.

[0049] The tab 33 is processed by a flattening process, which avoids the risk of bending and tearing of the tab 33, can reduce the production process of the battery 10, improve the production efficiency of the battery 10, and save costs. The tab 33 is processed by a flattening process, which can reduce the space occupied by the tab 33, save the internal space of the battery 10, and for batteries 10 of the same volume, the volume of the pole group 32 of the battery 10 of the present application can be made larger, thereby improving the energy density of the pole group 32.

[0050] According to some embodiments of the present invention, referring to Figure 3-Figure 4 , Figure 8-Figure 13 , the height of the tab 33 is d, satisfying 0.8 mm ≤ d ≤ 2.5 mm, for example, the height of the tab 33 can be 0.8 mm, 1.2 mm, 1.5 mm, 2.0 mm or 2.5 mm, etc. The thickness of the bottom wall 212 of the pole 2 is L, satisfying 0.4 mm ≤ L ≤ 1.2 mm, for example, the thickness of the bottom wall 212 of the pole 2 can be 0.4 mm, 0.6 mm, 0.9 mm, 1.0 mm or 1.2 mm, etc.

[0051] The height of the pole ear 33 is designed to be greater than the thickness of the bottom wall 212 of the pole 2, and the installation tool welds the bottom wall 212 of the pole 2 to the pole ear 33, which can facilitate the welding of the bottom wall 212 of the pole 2 and the pole ear 33. When welding, a thin structure is welded to a thick structure, which can easily achieve welding. For example, when the thickness of the bottom wall 212 of the pole 2 can be 0.4mm, the height of the pole ear 33 is 0.8mm; when the thickness of the bottom wall 212 of the pole 2 can be 0.6mm, the height of the pole ear 33 is 1.2mm; when the thickness of the bottom wall 212 of the pole 2 can be 0.6mm, the height of the pole ear 33 is 0.9mm, etc.

[0052] According to some embodiments of the present invention, referring to Figure 3-Figure 4 , Figure 8-Figure 10 , the area of ​​the bottom wall 212 is M, which satisfies 25mm 2 ≤L≤40mm 2 The area of ​​the bottom wall 212 determines the connection area between the terminal lug 33 and the bottom wall 212 of the pole 2. For example, the area of ​​the bottom wall 212 can be 25 mm 2 , 30mm 2 、35mm 2 or 40mm 2 When the area of ​​the bottom wall 212 meets the above range, the overcurrent capacity of the battery 10 and the capacity of the electrode group 32 can be met.

[0053] According to some embodiments of the present invention, referring to Figure 2-Figure 10 The second connection portion 23 is coplanar with the bottom wall 212 , which can prevent the second connection portion 23 or the bottom wall 212 from protruding and scratching the tab 33 , thereby improving the safety of the tab 33 .

[0054] According to some embodiments of the present invention, referring to Figure 8-Figure 10 The pole 2 is an integrally formed part, which can omit the process of fixing the first connecting part 22 and the second connecting part 23 to the main body 21, and can also increase the structural strength of the pole 2, while simplifying the process of processing the pole 2. For example, the pole 2 can be made of aluminum, and the pole 2 can be integrally stamped.

[0055] The battery cover plate 1 according to the second embodiment of the utility model comprises: the pole 2 according to the first embodiment of the utility model.

[0056] According to the battery cover plate 1 of the embodiment of the utility model, by setting the above-mentioned pole 2, the connection position of the pole ear 33 and the pole 2 is limited, the deviation of the assembly of the pole ear 33 and the pole 2 is avoided, and the assembly effect is improved; at the same time, the pole ear 33 has a first plane, and the first plane is fixed to the second plane of the pole 2, which can reduce the space occupied by the pole ear 33, and then the energy density of the pole group 32 can be improved.

[0057] According to some embodiments of the present invention, referring to Figure 1-Figure 4 The battery cover 1 includes a sealing plate 11, which is located at the opening and fixedly connected to the main body 21, and is used to close the opening to prevent impurities or dust in the external ring from entering the avoidance groove 211. Furthermore, the sealing plates 11 of two adjacent batteries 10 can be electrically connected for connecting the batteries 10 in series or in parallel.

[0058] According to some embodiments of the present invention, referring to Figure 1-Figure 4 The inner peripheral wall of the avoidance groove 211 has a sink 2111, which cooperates with the sealing plate 11. The sealing plate 11 is located on the sink 2111. The sink 2111 can play a role of installation limit for the sealing plate 11, which is convenient for the assembly of the sealing plate 11. The sealing plate 11 and the pole 2 can be fixedly connected by welding. For example, the outer surface of the sealing plate 11 is flush with the outer surface of the main body 21.

[0059] In a specific example, the battery cover 1 also includes a cover body 34, an upper plastic part 35, a lower plastic part 36 and a sealing ring 37. The upper plastic part 35 is located on the side of the cover body 34 away from the pole group 32, and the lower plastic part 36 is located on the side of the cover body 34 close to the pole group 32, and is sleeved on the outer peripheral side of the main body 21. The first connecting part 22 abuts against the upper plastic part 35, and the second connecting part 23 abuts against the lower plastic part 36. The pole 2 is used to fix the upper plastic part 35, the lower plastic part 36 and the sealing ring 37. At the same time, the sealing ring 37 is used to isolate the battery cover 1 from the main body 21; the upper plastic part 35 is used to isolate the first connecting part 22 from the cover body 34; the lower plastic part 36 is used to isolate the second connecting part 23 from the cover body 34, so as to avoid short circuit of the battery 10.

[0060] Two mounting holes are provided on the battery cover 1 , and two pole lugs 33 are connected to the same end of the pole group 32 , which are a positive pole lug and a negative pole lug respectively. A pole post 2 is provided in each mounting hole for connecting the corresponding pole lug 33 .

[0061] The battery 10 according to the embodiment of the third aspect of the utility model comprises: the battery cover 1 according to the embodiment of the second aspect of the utility model.

[0062] According to the battery 10 of the embodiment of the utility model, by providing the above-mentioned battery cover 1, the connection position of the pole ear 33 and the pole 2 is limited, the deviation of the assembly of the pole ear 33 and the pole 2 is avoided, and the assembly effect is improved; at the same time, the space occupied by the pole ear 33 is reduced, thereby improving the energy density of the battery 10.

[0063] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pole, used for a battery cover, characterized in that: The battery cover has a mounting hole, and the pole comprises: A main body, the main body is passed through the mounting hole, the main body has an escape groove, the opening of the escape groove faces the side of the battery cover away from the electrode group, and the opening of the escape groove is arranged opposite to the bottom wall of the escape groove; A first connection portion, the first connection portion is connected to the outer peripheral side of the main body and is located on a side of the battery cover away from the electrode group, and the first connection portion is spaced apart from the battery cover; The second connection part is connected to the outer peripheral side of the main body and is located on a side of the battery cover plate close to the electrode group. The second connection part is spaced apart from the battery cover plate.

2. The pole according to claim 1, characterized in that: The pole ear has a first surface disposed toward the battery cover plate, and the surface of the bottom wall facing the pole group is a second surface, and the first surface is parallel to the second surface.

3. The pole according to claim 1, characterized in that: The height of the tab is d, satisfying 0.8 mm ≤ d ≤ 2.5 mm; the thickness of the bottom wall is L, satisfying 0.4 mm ≤ L ≤ 1.2 mm.

4. The pole according to claim 1, characterized in that: The area of ​​the bottom wall is M, which satisfies 25 mm 2 ≤L≤40mm 2 .

5. The pole according to claim 1, characterized in that: The second connecting portion is coplanar with the bottom wall.

6. The pole according to claim 1, characterized in that: The pole is an integrally formed part.

7. A battery cover, characterized in that: include: A pole according to any one of claims 1 to 6.

8. The battery cover according to claim 7, characterized in that: include: A sealing plate is located at the opening and is fixedly connected to the main body, and is used to close the opening.

9. The battery cover according to claim 8, characterized in that: The inner peripheral wall of the avoidance groove has a sink matched with the sealing plate.

10. A battery, characterized in that: include: A battery cover according to any one of claims 7 to 9.

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