Adapter sheet protective cover and battery

Abstract

The utility model provides an adapter sheet protective cover and a battery, which belong to the technical field of power batteries, and comprise a protective cover body, the protective cover body covers a connecting recess of an adapter sheet, the protective cover body is provided with a first side and a second side which are opposite to each other, the first side faces the connecting recess of the adapter sheet, and the second side faces the connecting recess of the adapter sheet. The second side is provided with a protruding part protruding towards the interior of the connecting recess of the switching piece, and the second side is provided with a weight reduction structure corresponding to the protruding part. The protective cover body covers the connecting recess of the adapter plate, so that welding slag scattered in the connecting recess can be effectively prevented from falling into the battery cell, and the use safety of the battery is improved. And meanwhile, as the lug boss extends into the connecting recess of the adapter piece, the lug boss occupies part of the volume in the connecting recess, the use amount of glue can be saved, the curing time of the glue can be shortened, and the efficiency can be improved. The weight reducing structure is arranged on the second side of the protective cover body corresponding to the lug boss, so that the manufacturing cost can be saved, the weight of the protective cover body is reduced, and the weight of the battery is reduced.

Description

Technical Field

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

[0002] Automotive power lithium-ion batteries mainly include three types: square aluminum shell, cylindrical, and soft pack. Square aluminum shell batteries are the mainstream products on the current market because of their strong plasticity and can be customized according to specific needs. Square aluminum shell batteries are mainly composed of bare cells, adapters, top cover components, and aluminum shells. During the battery assembly process, the tabs and adapters of the bare cells are first connected together using ultrasonic welding, and then the adapters are connected to the top cover assembly using laser welding. Laser welding easily produces welding slag. If the above welding slag is not completely removed before the battery assembly is completed, the welding slag left inside the battery may fall into the battery cell due to gravity or vibration during the use of the battery, thereby affecting the service life of the battery cell and even causing safety accidents.

[0003] Currently, to prevent welding slag from falling into the battery cell, after the adapter is welded, tape is applied to the welding area to isolate the welding area from the battery cell. However, during battery use, the tape may fall off due to vibration or immersion in electrolyte, posing a safety hazard. Therefore, glue is often used instead of tape. Since the existing adapter has a connection recess, the adapter is welded to the top cover assembly through the connection recess for positioning during welding. Therefore, the welding slag is concentrated in the connection recess of the adapter, and glue is needed to fill the connection recess. The amount of glue used is large, which makes the glue cure for a long time. In addition, the glue is heavy after curing, which makes the operation cumbersome and the cost high. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an adapter plate protective cover and a battery, which are used to solve the problems in the prior art of using glue to fill the weight-reducing grooves in the battery, such as a large amount of glue is used, resulting in a long curing time of the glue, a large weight after curing, and cumbersome operation.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides an adapter plate protective cover, including a protective cover body, which covers the connecting recess of the adapter plate, and the protective cover body has a first side and a second side opposite to each other, the first side faces the connecting groove of the adapter plate, and has a protruding portion protruding into the connecting recess of the adapter plate, and the second side is provided with a weight-reducing structure corresponding to the protruding portion.

[0006] Optionally, the weight-reducing structure is a weight-reducing groove.

[0007] Optionally, a reinforcement structure is provided in the weight-reducing groove, and the reinforcement structure includes reinforcement ribs.

[0008] Optionally, a plurality of annular reinforcing ribs are provided on the inner wall of the weight-reducing groove, and each of the annular reinforcing ribs is arranged along the circumference of the inner wall of the weight-reducing groove, and the plurality of annular reinforcing ribs are arranged in sequence and spaced apart along the depth direction of the weight-reducing groove.

[0009] Optionally, the protective cover body includes a brim portion, which surrounds the opening of the weight-reducing groove. The edge of the brim portion away from the raised portion has a folded edge, and the folded edge is used to cover the edge of the adapter plate.

[0010] Optionally, the weight-reducing groove is hemispherical, and the reinforcing ribs are arranged along the radial direction of the weight-reducing groove.

[0011] Optionally, at least two intersecting reinforcing ribs are provided in the weight-reducing groove.

[0012] Optionally, a plurality of outwardly protruding bonding protrusions are provided on the outer wall of the protruding portion.

[0013] Optionally, the circumferential size of the bonding protrusion gradually decreases from the root to the top of the bonding protrusion.

[0014] The present utility model also provides a battery, comprising an adapter plate, a top cover assembly and the adapter plate protective cover as described above, wherein the top cover assembly has a positioning recess, the adapter plate has a connecting recess sunk into the positioning recess, and the protrusion of the adapter plate protective cover is accommodated in the connecting recess.

[0015] As described above, the adapter protective cover and battery of the present invention have the following beneficial effects:

[0016] By covering the adapter's connection recess with the protective cover body, any weld slag that might have fallen into the recess can be effectively prevented from entering the battery cell, improving battery safety. Furthermore, because the raised portion extends into the adapter's connection recess and occupies a portion of the recess's volume, the amount of glue used can be reduced when filling the recess with glue, shortening the glue's curing time and improving the efficiency of processing the adapter's weld area. By providing a weight-reducing structure on the second side of the protective cover body, corresponding to the raised portion, manufacturing costs can be reduced, and the weight of the protective cover body, thereby reducing the weight of the battery, ultimately achieving a lightweight design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic plan view of the square adapter plate protective cover according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic plan view of the circular adapter plate protective cover according to an embodiment of the present invention.

[0019] Figure 3 The utility model discloses a cross section structure schematic diagram of the adapter piece protective cover and the adapter piece of an embodiment of the utility model are bonded.

[0020] Figure 4 The utility model discloses a cross section structure schematic diagram of the adapter piece protective cover with annular reinforcing rib of an embodiment of the utility model.

[0021] Figure 5 The utility model discloses a plane structure schematic diagram of the adapter piece protective cover with cross -shaped reinforcing rib of an embodiment of the utility model.

[0022] Figure 6 The utility model discloses a three -dimensional structure schematic diagram of the adapter piece protective cover with cross -shaped reinforcing rib of an embodiment of the utility model.

[0023] Figure 7 The utility model discloses a cross section structure schematic diagram of the adapter piece protective cover with the edge of turning over of an embodiment of the utility model.

[0024] Figure 8 The utility model discloses a cross section structure schematic diagram of the adapter piece protective cover with the bonding convex of an embodiment of the utility model.

[0025] Label explanation: 1, convex part, 2, hat brim part, 3, annular reinforcing rib, 4, weight reduction groove, 5, reinforcing rib, 6, edge of turning over, 7, adapter piece, 8, glue, 9, bonding convex. DETAILED DESCRIPTION

[0026] The following by specific embodiment explains the embodiment of the utility model of the person skilled in the art can easily understand the other advantages and efficacy of the utility model from the content disclosed in the specification.

[0027] Please refer to Figures 1 to 8 It is understood that the structure, proportion, size etc. shown in the drawings attached to the specification, are only used to cooperate with the content disclosed in the specification, for the person skilled in the art to understand and read, and not to limit the limiting conditions that the utility model can be implemented, so it does not have the technical essence, any modification of structure, change of proportion relationship or adjustment of size, under the condition that it does not affect the effect and the purpose that the utility model can produce, should still fall within the scope that the technical content disclosed in the utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "intermediate" and "one" in the specification, are only for the convenience of clear understanding of the description, and not to limit the scope that the utility model can be implemented, the change or adjustment of relative relationship, when the technical content is not changed, is also regarded as the scope that the utility model can be implemented.

[0028] In order to describe the present invention in detail, the following is a detailed description of an adapter protective cover and a battery of the present invention:

[0029] Please combine Figures 1 to 3 As shown, the utility model provides a protective cover for an adapter plate, comprising a protective cover body, the protective cover body covering the connection recess of the adapter plate 7, the protective cover body having a first side and a second side opposite to each other, the first side facing the connection groove of the adapter plate 7, and having a protrusion 1 protruding toward the connection recess of the adapter plate 7, and the second side corresponding to the protrusion 1 is provided with a weight-reducing structure. By covering the connection recess of the adapter plate 7 with the protective cover body, welding slag scattered in the connection recess can be effectively prevented from falling into the battery cell, thereby improving the safety of battery use. At the same time, since the protrusion 1 extends into the connection recess of the adapter plate 7 and occupies part of the volume in the connection recess, when filling the connection recess of the adapter plate 7 with glue 8, the amount of glue 8 can be saved, the curing time of the glue 8 can be shortened, and the efficiency of processing the welding area of ​​the adapter plate 7 can be improved. By providing a weight-reducing structure corresponding to the protrusion 1 on the second side of the protective cover body, the weight of the protective cover body can be greatly reduced, thereby reducing the weight of the battery, thereby realizing a lightweight design of the battery.

[0030] In this embodiment, the adapter plate protective cover is adhered to the adapter plate 7 by glue 8, and there is a gap between the protrusion 1 and the connection recess of the adapter plate 7, and the gap is used to fill the glue 8. The size of the above gap can be adjusted according to the actual assembly requirements. In some embodiments, the protrusion 1 can be interference fit with the connection recess of the adapter plate 7, and can also be adhered by glue 8 to increase the stability of its connection with the adapter plate. The adapter plate protective cover can be formed by stamping, and the glue 8 can be applied to the connection recess of the adapter plate 7 or on the adapter plate protective cover before adhesion, or the adapter plate protective cover can be placed in the connection recess of the adapter plate 7 and then the glue 8 can be squeezed into the gap between the two. The glue 8 can be acrylic glue 8, polyvinylidene fluoride, polyurethane, epoxy resin, etc. The material of the adapter plate protective cover can be polypropylene, polyimide, polyethylene terephthalate, etc. The material of the adapter plate protective cover can be adjusted according to the use requirements.

[0031] In this embodiment, the weight-reducing structure is a weight-reducing groove 4. The weight-reducing groove 4 is easy to process and can be formed simultaneously with the protrusion of the protrusion 1 by stamping. In some embodiments, the weight-reducing structure is a plurality of weight-reducing holes.

[0032] See Figures 4 to 6 A reinforcement structure is provided within the weight-reducing groove 4. The reinforcement structure includes ribs 5. The reinforcement structure increases the strength and stability of the raised portion 1, ensuring better contact between the raised portion 1 and the connecting recess of the adapter plate 7, thereby improving the reliability of the adapter plate protective cover. The ribs 5 have a simple structure and provide good support.

[0033] Specifically, the weight-reducing groove 4 is hemispherical, and the reinforcing ribs 5 are arranged along the radial direction of the weight-reducing groove 4 . Such arrangement of the reinforcing ribs 5 makes the shape beautiful and regular.

[0034] Among them, at least two intersecting reinforcing ribs 5 are provided in the weight-reducing groove 4, which provide better support for the weight-reducing groove 4. In this embodiment, two reinforcing ribs 5 are provided in the weight-reducing groove 4, and the two reinforcing ribs 5 intersect in a cross shape. The cross-shaped reinforcing ribs 5 have a good supporting effect on the weight-reducing groove 4, use less material, and are easy to manufacture and produce. In some embodiments, a plurality of annular reinforcing ribs 3 are provided on the inner wall of the weight-reducing groove 4, and each annular reinforcing rib 3 is arranged along the circumference of the inner wall of the weight-reducing groove 4, and a plurality of annular reinforcing ribs 3 are arranged in sequence at intervals along the depth direction of the weight-reducing groove 4. The annular reinforcing ribs 3 can strengthen the supporting effect on the weight-reducing groove 4 in the circumferential direction. One to five annular reinforcing ribs 3 can be provided on the inner wall of the weight-reducing groove 4, and each annular reinforcing rib 3 is arranged at intervals of 0.2-2 mm along the depth direction of the weight-reducing groove 4.

[0035] like Figure 7 As shown, in some other embodiments, the protective cover body includes a brim portion, the brim portion 2 surrounding the opening of the weight-reducing groove 4, and the edge of the brim portion 2 away from the raised portion 1 has a folded edge 6, which is used to cover the edge of the adapter plate 7. The folded edge 6 can further strengthen the stability of the connection between the adapter plate protective cover and the adapter plate 7. At the same time, because the folded edge 6 covers the edge of the adapter plate 7, the area covered by the adapter plate protective cover on the adapter plate 7 is increased, which increases the area of ​​the protective cover to prevent welding slag from falling into the battery cell, improves the reliability of its protection, and thus achieves the purpose of multiple protection.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the projection of the adapter plate protective cover in the concave direction of the connecting recess is square or circular. Such a design can make the adapter plate protective cover have a beautiful and neat shape when it is bonded to the adapter plate 7.

[0037] like Figure 8 As shown, a plurality of outwardly protruding bonding protrusions 9 are provided on the outer wall of the raised portion 1. The bonding protrusions 9 can increase the bonding area between the glue 8 and the adapter plate protective cover, thereby strengthening the bonding stability between the adapter plate protective cover and the adapter plate 7. In this embodiment, the circumferential size of the bonding protrusions 9 gradually decreases from the root to the top. This design allows the glue 8 to flow better between the bonding protrusions 9 when pouring the glue 8, ensuring a tight bond between the raised portion 1 and the adapter plate 7. At the same time, due to the elasticity of the raised portion 1, the structure of the bonding protrusions 9 also facilitates the placement of the raised portion 1 into the connection recess of the adapter plate 7.

[0038] The utility model provides a battery, including an adapter plate 7, a top cover assembly and the adapter plate protective cover as described above, the top cover assembly has a positioning recess, the adapter plate 7 has a connecting recess sunken into the positioning recess, and the protrusion 1 of the adapter plate protective cover is accommodated in the connecting recess.

[0039] In summary, by covering the connection recess of the adapter plate 7 with the protective cover body, welding slag scattered in the connection recess can be effectively prevented from falling into the battery cell, thereby improving the safety of battery use. At the same time, because the protrusion 1 extends into the connection recess of the adapter plate 7 and occupies part of the volume of the connection recess, the amount of glue 8 can be saved when filling the connection recess of the adapter plate, shortening the curing time of the glue 8 and improving the efficiency of processing the welding area of ​​the adapter plate 7. By providing a weight-reducing structure on the second side of the protective cover body corresponding to the protrusion, its manufacturing cost can be reduced, and the weight of the protective cover body can be greatly reduced, thereby reducing the weight of the battery and achieving a lightweight design of the battery.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A protective cover for an adapter, characterized in that: It includes a protective cover body, which covers the connecting recess of the adapter plate. The protective cover body has a first side and a second side opposite to each other. The first side faces the connecting groove of the adapter plate and has a protruding portion protruding into the connecting recess of the adapter plate. The second side is provided with a weight-reducing structure corresponding to the protruding portion.

2. The adapter plate protective cover according to claim 1, wherein: The weight-reducing structure is a weight-reducing groove.

3. The adapter plate protective cover according to claim 2, wherein: A reinforcement structure is provided in the weight-reducing groove, and the reinforcement structure includes reinforcement ribs.

4. The adapter plate protective cover according to claim 3, wherein: A plurality of annular reinforcing ribs are arranged on the inner wall of the weight-reducing groove, and each of the annular reinforcing ribs is arranged along the circumference of the inner wall of the weight-reducing groove. The plurality of annular reinforcing ribs are arranged in sequence and spaced apart along the depth direction of the weight-reducing groove.

5. The adapter plate protective cover according to claim 4, characterized in that: The protective cover body includes a brim portion, which surrounds the opening of the weight-reducing groove. The edge of the brim portion away from the raised portion has a folded edge, and the folded edge is used to cover the edge of the adapter plate.

6. The adapter plate protective cover according to claim 3, wherein: The weight-reducing groove is hemispherical, and the reinforcing ribs are arranged along the radial direction of the weight-reducing groove.

7. The adapter plate protective cover according to any one of claims 3 to 6, characterized in that: At least two intersecting reinforcing ribs are arranged in the weight-reducing groove.

8. The adapter plate protective cover according to any one of claims 1 to 6, characterized in that: A plurality of bonding protrusions protruding outward are arranged on the outer wall of the protruding portion.

9. The adapter plate protective cover according to claim 8, characterized in that: The circumferential size of the bonding protrusion gradually decreases from the root to the top of the bonding protrusion.

10. A battery, characterized in that: It includes an adapter plate, a top cover assembly and an adapter plate protective cover as described in any one of claims 1 to 9, wherein the top cover assembly has a positioning recess, the adapter plate has a connecting recess sunk into the positioning recess, and the protrusion of the adapter plate protective cover is accommodated in the connecting recess.

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