Battery cover plate structure and battery

Abstract

The utility model relates to the technical field of batteries, and discloses a battery cover plate structure and a battery. The pole column is provided with a body part which is indirectly propped against one side surface of the cover plate body; the insulating part is arranged between the cover plate body and the body part, the insulating part is provided with a blocking part which enables the cover plate body and the body part to be arranged at an interval, and an edge covering part which extends from the blocking part to one side of the body part and is arranged on the peripheral side of the body part in a surrounding manner; a plurality of limiting teeth are formed by extending the edge covering part towards the circumferential side face of the body part in parallel to the plane where the body part is located, and the limiting teeth and the circumferential side face of the body part are arranged in an attached mode or at intervals. According to the battery cover plate structure provided by the utility model, the assembly of the body part and the insulating part can be facilitated, the problems of shaking and the like of the pole post after assembly are avoided, and the sealing performance of the battery cover plate structure is further ensured; and interference assembly of the body part and the insulating part caused by machining size errors is avoided, and the situation of assembly difficulty is avoided.

Description

Technical Field

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

[0002] With the continuous development of the battery industry, lithium-ion batteries are widely used in vehicles, mobile devices and other fields due to their high energy density. Among them, the sealing effect and insulation performance of lithium-ion batteries directly affect their service life.

[0003] In the related art, an insulating lower plastic is usually required between the pole and the bare aluminum plate, and the insulating lower plastic forms a space for accommodating the pole. When the insulating lower plastic and the pole are assembled, if the gap is large, it is easy to cause the pole to shake after assembly, and even to twist; and if the assembly of the pole and the insulating lower plastic adopts a tight interference fit, it is easy to cause assembly difficulty and low efficiency. Utility Model Content

[0004] In view of this, the utility model provides a battery cover structure and a battery to solve the problem that when the insulating lower plastic and the pole are assembled, a large gap easily causes the pole to shake after assembly, and a tight interference fit easily makes assembly difficult.

[0005] In a first aspect, the utility model provides a battery cover structure, comprising:

[0006] Cover plate body;

[0007] The pole has a main body portion indirectly abutting against a side surface of the cover plate body;

[0008] An insulating member is disposed between the cover body and the main body, and comprises a barrier portion for spacing the cover body from the main body, and an edge portion extending from the barrier portion toward one side of the main body and surrounding the outer peripheral side of the main body;

[0009] In a plane parallel to the main body, the edge portion extends toward the circumferential side of the main body to form a plurality of limiting teeth, and the limiting teeth are in contact with or spaced from the circumferential side of the main body.

[0010] Beneficial effect: The battery cover plate structure provided by the embodiment of the utility model has a plurality of limiting teeth formed on the edging portion extending toward the circumferential side of the main body and parallel to the plane where the main body is located, so that the limiting teeth can be abutted against the circumferential side of the main body, thereby facilitating the assembly of the main body and the insulating part and avoiding problems such as shaking of the pole after assembly, thereby helping to ensure the sealing performance of the battery cover plate structure; at the same time, by limiting the fit between the limiting teeth and the circumferential side of the main body or setting a gap, it is possible to avoid interference assembly between the main body and the insulating part due to processing size errors, avoid assembly difficulties, and improve assembly efficiency.

[0011] In an optional embodiment, the distance between the limiting tooth and the circumferential side surface of the main body is L, wherein L satisfies: 0mm≤L≤0.1mm.

[0012] Beneficial effect: By making the limiting teeth fit with the circumferential side surfaces of the main body or setting a gap therebetween, and further limiting the upper limit of the spacing L between the limiting teeth and the circumferential side surfaces of the main body, the shaking amplitude of the pole after assembly can be reduced as much as possible, and by limiting the lower limit of the spacing L between the limiting teeth and the circumferential side surfaces of the main body, interference fit between the main body and the insulating part due to processing size errors can be avoided, thereby avoiding assembly difficulties and improving assembly efficiency.

[0013] In an optional embodiment, along the width direction of the cover plate body, limiting teeth are extended from opposite sides of the edging portion, and the limiting teeth on both sides are respectively arranged corresponding to opposite side surfaces of the body portion.

[0014] Beneficial effect: By extending and forming limiting teeth on both opposite sides of the edging portion, both opposite side surfaces of the main body portion can be limited by the limiting teeth, thereby avoiding problems such as shaking of the pole after assembly.

[0015] In an optional embodiment, along the width direction of the cover plate body, a local area of ​​the body portion protrudes toward the edge portion to form a convex bulge;

[0016] An accommodating groove is formed between two adjacent limiting teeth along the length direction of the cover plate body;

[0017] The convex bump is snap-fitted into the receiving groove.

[0018] Beneficial effect: By clamping the convex bump between two adjacent limiting teeth along the length direction of the cover plate body, the convex bump is matched with the accommodating groove, thereby improving the positioning accuracy and avoiding the problem of shaking of the pole after assembly.

[0019] In an optional embodiment, the pole is extended from a side surface of the main body to form a penetration portion, the penetration portion at least partially penetrates the cover body and is riveted to the connecting block to fix the pole to the cover body.

[0020] In an optional implementation, the insulating member is provided with a via hole, and the protruding portion passes through the via hole.

[0021] In an optional embodiment, the limiting teeth on both sides are symmetrically arranged relative to the center line of the insulating component along the length direction.

[0022] In an optional embodiment, along the width direction of the cover plate body, two opposite side surfaces of the main body portion are raised to form convex bumps.

[0023] Beneficial effect: By forming convex bumps on both opposite side surfaces of the main body, the convex bumps on the two side surfaces of the main body can be matched with the receiving grooves formed on the insulating member respectively, thereby improving the positioning accuracy and avoiding the problem of shaking of the pole after assembly.

[0024] In an optional embodiment, along the length direction of the cover plate body, the convex hull overlaps with the projection of the limiting tooth.

[0025] Beneficial effect: along the length direction of the cover body, by making the convex bulge overlap with the projection of the limiting tooth, when the main body moves relative to the insulating member along the length direction of the cover body, the limiting tooth can block the convex bulge and play a limiting role. The displacement of the pole along the length direction of the cover body after assembly is reduced, ensuring the accurate assembly position.

[0026] In a second aspect, the utility model further provides a battery, comprising the battery cover structure as described above.

[0027] Because the battery includes a battery cover plate structure, it has the same effect as the battery cover plate structure and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the battery cover structure of the utility model;

[0030] Figure 2 It is a top view of the battery cover structure of the utility model;

[0031] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0032] Figure 4It is a schematic diagram of the insulating member of the utility model;

[0033] Figure 5 for Figure 4 A partial enlarged view of

[0034] Figure 6 It is a schematic diagram of the pole of the utility model;

[0035] Figure 7 It is a schematic diagram of the assembly state of the insulating member and the pole of the utility model.

[0036] Description of reference numerals:

[0037] 1. Cover plate body; 2. Connecting block; 3. Insulating member; 31. Through hole; 32. Limiting tooth; 33. Accommodating groove; 34. Blocking part; 35. Edge-wrapped part; 4. Pole; 41. Penetrating part; 42. Main body; 43. Protruding bump; 5. Sealing ring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0043] According to an embodiment of the present utility model, on the one hand, a battery cover structure is provided, comprising:

[0044] Cover plate body 1;

[0045] The pole 4 has a main body portion 42 that is indirectly in contact with a side surface of the cover body 1;

[0046] The insulating member 3 is disposed between the cover body 1 and the main body 42. The insulating member 3 includes a barrier portion 34 that separates the cover body 1 from the main body 42, and an edge portion 35 that extends from the barrier portion 34 toward one side of the main body 42 and surrounds the outer peripheral side of the main body 42.

[0047] In a plane parallel to the main body 42 , the edge portion 35 extends toward the circumferential side of the main body 42 to form a plurality of limiting teeth 32 , and the limiting teeth 32 are in close contact with or spaced from the circumferential side of the main body 42 .

[0048] The battery cover structure of this embodiment can be covered on the battery casing, and the battery cover structure and the battery casing are jointly enclosed to form a hollow cavity, so as to accommodate the electrode group in the hollow cavity.

[0049] The pole 4 is connected to the pole ear of the pole group, and after passing through the cover body 1, the pole 4 is connected to the external circuit, so that the pole group and the external circuit can be connected.

[0050] The cover body 1 can be made of aluminum. The pole 4 can be made of aluminum or copper.

[0051] Since the pole 4 is charged, the cover body 1 and the pole 4 need to be insulated.

[0052] The insulating member 3 of this embodiment has a blocking portion 34 that separates the cover body 1 from the main body 42 . By using insulating material, the cover body 1 and the pole 4 can be prevented from being electrically connected.

[0053] The pole 4 includes a main body 42. Since the pole 4 needs to be stably welded to the pole ear of the pole group, a larger contact surface needs to be set. At the same time, the pole 4 needs to cooperate with the connecting block 2 to be locked on both sides of the cover body 1. By setting the main body 42 to indirectly abut against one side surface of the cover body 1, the stable welding requirements and the firm abutment requirements can be met at the same time.

[0054] The insulating member 3 also includes a edging portion 35 extending from the blocking portion 34 toward one side of the main body portion 42 and surrounding the outer peripheral side of the main body portion 42. The edging portion 35 can wrap the main body portion 42 to form an installation position for the main body portion 42, thereby facilitating the positioning and assembly of the main body portion 42 and the insulating member 3, while increasing the creepage distance between the pole 4 and the cover plate body 1.

[0055] The battery cover structure provided by the embodiment of the utility model has a plurality of limit teeth 32 formed on the edging portion 35 extending toward the circumferential side of the main body 42 in a plane parallel to the main body 42, so that the limit teeth 32 can be abutted against the circumferential side of the main body 42, thereby facilitating the assembly of the main body 42 and the insulating member 3, avoiding problems such as shaking of the pole 4 after assembly, and thus helping to ensure the sealing performance of the battery cover structure; at the same time, by limiting the fit of the limit teeth 32 and the circumferential side of the main body 42 or setting a gap, it is possible to avoid interference assembly between the main body 42 and the insulating member 3 due to processing size errors, avoid assembly difficulties, and improve assembly efficiency.

[0056] In some embodiments, in combination Figure 7 As shown, the distance between the limiting teeth 32 and the circumferential side surface of the main body portion 42 is L, wherein L satisfies: 0 mm ≤ L ≤ 0.1 mm.

[0057] By making the limiting teeth 32 fit together with the circumferential side surfaces of the main body 42 or setting a gap therebetween, and further limiting the upper limit of the spacing L between the limiting teeth 32 and the circumferential side surfaces of the main body 42, the shaking amplitude of the pole 4 after assembly can be reduced as much as possible, and by limiting the lower limit of the spacing L between the limiting teeth 32 and the circumferential side surfaces of the main body 42, interference fit between the main body 42 and the insulating part 3 due to processing size errors can be avoided, thereby avoiding assembly difficulties and improving assembly efficiency.

[0058] Optionally, the distance L between the limiting teeth 32 and the circumferential side surface of the main body portion 42 may be 0 mm, 0.02 mm, 0.03 mm, 0.05 mm, 0.06 mm, 0.08 mm or 0.1 mm.

[0059] In some embodiments, in combination Figure 3 , Figure 4 As shown, along the width direction of the cover plate body 1 , two opposite sides of the edge portion 35 extend to form limiting teeth 32 , and the limiting teeth 32 on both sides are respectively arranged corresponding to the two opposite sides of the body portion 42 .

[0060] By extending the limiting teeth 32 on opposite sides of the edge portion 35 , opposite side surfaces of the main body 42 can be limited by the limiting teeth 32 , thereby preventing the pole 4 from shaking after assembly.

[0061] Optionally, a guide portion is formed on the limiting tooth 32 along the direction in which the main body 42 is installed into the insulating member 3. The guide portion may specifically be a rounded corner, which can facilitate guiding the main body 42 and improve assembly efficiency.

[0062] In some embodiments, in combination Figure 6 , Figure 7 As shown, along the width direction of the cover body 1, a local area of ​​the main body portion 42 protrudes toward the edge portion 35 to form a convex 43;

[0063] Along the length direction of the cover body 1, an accommodation groove 33 is formed between two adjacent limiting teeth 32;

[0064] The convex bump 43 is snap-fitted into the receiving groove 33 .

[0065] By clamping the convex bump 43 between two adjacent limiting teeth 32 along the length direction of the cover body 1, the convex bump 43 is matched with the receiving groove 33, thereby improving the positioning accuracy and avoiding the problem of shaking of the pole 4 after assembly.

[0066] In addition, by properly setting the position of the convex bump 43 and the distance between two adjacent limiting teeth 32 used to form the accommodating groove 33, it is also possible to achieve a foolproof installation of the pole 4.

[0067] In some embodiments, in combination Figure 7 As shown, along the length direction of the cover plate body 1 , the convex bump 43 overlaps with the projection of the limiting tooth 32 .

[0068] Along the length direction of the cover body 1, by making the projection of the convex 43 overlap with the projection of the limiting tooth 32, when the main body 42 moves relative to the insulating member 3 along the length direction of the cover body 1, the limiting tooth 32 can block the convex 43 to play a limiting role. The displacement of the pole 4 along the length direction of the cover body 1 after assembly is reduced to ensure the accurate assembly position.

[0069] In some embodiments, in combination Figure 6 As shown, the pole 4 is extended from one side surface of the body 42 to form a penetration portion 41 , and the penetration portion 41 at least partially penetrates the cover body 1 and is riveted to the connection block 2 to fix the pole 4 to the cover body 1 .

[0070] A sealing ring 5 is also sleeved on the outer periphery of the penetration portion 41 , and the sealing ring 5 is compressed by riveting, which can improve the sealing and insulation performance of the entire battery cover structure.

[0071] In some embodiments, in combination Figure 4 As shown, the insulating member 3 is provided with a through hole 31 , and the through portion 41 passes through the through hole 31 .

[0072] In some embodiments, in combination Figure 7As shown, the limiting teeth 32 on both sides are symmetrically arranged relative to the center line of the insulating member 3 along the length direction.

[0073] This facilitates the centering of the main body 42 after installation, thereby improving assembly efficiency.

[0074] In some embodiments, in combination Figure 7 As shown, along the width direction of the cover plate body 1 , two opposite side surfaces of the body portion 42 are raised to form convex bumps 43 .

[0075] By forming convex bumps 43 on both opposite side surfaces of the main body 42, the convex bumps 43 on both side surfaces of the main body 42 can respectively cooperate with the receiving grooves 33 formed on the insulating member 3, thereby improving the positioning accuracy and avoiding the problem of shaking of the pole 4 after assembly.

[0076] According to an embodiment of the present invention, on the other hand, a battery is provided, comprising: the battery cover structure as described above.

[0077] The battery provided by the embodiment of the utility model has a plurality of limit teeth 32 formed on the edging portion 35 extending toward the circumferential side of the main body 42 in a plane parallel to the main body 42, so that the limit teeth 32 can be abutted against the circumferential side of the main body 42, thereby facilitating the assembly of the main body 42 and the insulating member 3, avoiding problems such as shaking of the pole 4 after assembly, and thus helping to ensure the sealing performance of the battery cover structure; at the same time, by limiting the fit between the limit teeth 32 and the circumferential side of the main body 42 or setting a gap, it is possible to avoid interference assembly between the main body 42 and the insulating member 3 due to processing size errors, avoid assembly difficulties, and improve assembly efficiency.

[0078] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. Although the embodiments of the present utility model are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations are all within the scope defined by the present utility model.

Claims

1. A battery cover structure, characterized in that: include: Cover plate body (1); A pole (4) having a main body portion (42) that is indirectly in contact with a side surface of the cover plate body (1); an insulating member (3) disposed between the cover plate body (1) and the body portion (42), the insulating member (3) comprising a barrier portion (34) disposed to space the cover plate body (1) and the body portion (42), and an edge portion (35) extending from the barrier portion (34) toward one side of the body portion (42) and surrounding the outer peripheral side of the body portion (42); In a plane parallel to the main body (42), the edging portion (35) extends toward the circumferential side of the main body (42) to form a plurality of limiting teeth (32), and the limiting teeth (32) are in close contact with or spaced from the circumferential side of the main body (42).

2. The battery cover structure according to claim 1, characterized in that: The spacing between the limiting teeth (32) and the circumferential side surface of the main body (42) is L, wherein L satisfies: 0 mm ≤ L ≤ 0.1 mm.

3. The battery cover structure according to claim 1, characterized in that: The limiting teeth (32) are extended to form two opposite sides of the edge portion (35) along the width direction of the cover plate body (1), and the limiting teeth (32) on both sides are respectively arranged corresponding to the two opposite sides of the body portion (42).

4. The battery cover structure according to claim 1, characterized in that: Along the width direction of the cover plate body (1), a local area of ​​the body portion (42) protrudes toward the edge portion (35) to form a convex bump (43); Along the length direction of the cover plate body (1), an accommodation groove (33) is formed between two adjacent limiting teeth (32); The convex bump (43) is snap-fitted into the accommodating groove (33).

5. The battery cover structure according to any one of claims 1 to 4, characterized in that: The pole (4) is extended from a side surface of the main body (42) to form a protruding portion (41), and the protruding portion (41) at least partially protrudes from the cover body (1) and is riveted to the connecting block (2) to fix the pole (4) to the cover body (1).

6. The battery cover structure according to claim 5, characterized in that: The insulating member (3) is provided with a through hole (31), and the protruding portion (41) protrudes from the through hole (31).

7. The battery cover structure according to claim 3, characterized in that: The limiting teeth (32) on both sides are symmetrically arranged relative to the center line of the insulating component (3) along the length direction.

8. The battery cover structure according to claim 4, characterized in that: Along the width direction of the cover plate body (1), two opposite side surfaces of the body portion (42) are both raised to form convex bumps (43).

9. The battery cover structure according to claim 4, characterized in that: Along the length direction of the cover plate body (1), the convex bump (43) overlaps with the projection of the limiting tooth (32).

10. A battery, characterized in that: The battery cover structure comprises the battery cover structure as described in any one of claims 1 to 9.

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