CN218299986U

CN218299986U - Cover plate assembly and battery

Info

Publication number: CN218299986U
Application number: CN202222224004.0U
Authority: CN
Inventors: 郑旭; 舒宽金; 贺孝武; 安苏礼; 邓振; 何巍
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-13
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses an apron subassembly and battery, wherein, the apron subassembly is including the apron body, utmost point post and first plastic part, the apron body runs through and is equipped with utmost point post hole, utmost point post passes utmost point post hole, utmost point post is fixed on the apron body through first plastic part, the apron body has relative first side and the second side that sets up, it is equipped with the protruding muscle of enhancement to follow utmost point post hole week direction protrusion on the first side, the second side corresponds the position of strengthening protruding muscle and is formed with the groove of moulding plastics, it moulds plastics the first through-hole in groove to be equipped with the intercommunication on the protruding muscle of enhancement, first plastic part injection moulding is at first side, and first plastic part parcel strengthens protruding muscle and packs the inslot of moulding plastics through first through-hole. The utility model discloses an apron subassembly can guarantee that utmost point post is firm on the apron body through the bonding strength who strengthens first plastic part and apron body and utmost point post, and utmost point post need not to fix through the riveting piece, can reduce the occupation space of apron subassembly to improve the inside space of battery, improve the energy density of battery.

Description

Cover plate assembly and battery

Technical Field

The utility model relates to a battery technology field especially relates to an apron subassembly and battery.

Background

The power battery has the advantages of light weight, good safety performance and higher energy density, and is widely applied to industries such as electric automobiles and the like. Because the energy density of power battery directly restricts the duration of an electric automobile, in order to improve the energy density of the power battery, the prior art generally arranges the terminal component outside the power battery and adopts a riveting structure for fixing so as to improve the space inside the power battery, but the power battery has the following defects: the terminal subassembly needs rivet through the riveting piece, can increase the height of terminal subassembly to increase the holistic size of battery, under the unchangeable condition of power battery's whole size, still can reduce power battery inner space, consequently can not further improve power battery's energy density.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the cover plate assembly is simple in structure and small in occupied space.

The embodiment of the utility model provides a another aim at: provided is a battery which has a simple structure, can improve the space utilization rate inside the battery, and can improve the energy density of the battery.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the first aspect provides an apron subassembly, including apron body, utmost point post and first plastic part, the apron body runs through and is provided with the utmost point post hole, utmost point post passes the utmost point post hole, and passes through first plastic part is fixed on the apron body, the apron body has relative first side and the second side that sets up, follow on the first side utmost point post hole circumference protrusion is provided with strengthens protruding muscle, the second side corresponds the position of strengthening protruding muscle is formed with the groove of moulding plastics, it runs through and is provided with the intercommunication to strengthen protruding muscle the first through-hole in groove of moulding plastics, first plastic part injection moulding is in on the first side, just first plastic part parcel strengthen protruding muscle and pass through first through-hole is filled the inslot of moulding plastics.

As a preferred scheme of the cover plate assembly, the annular recess of the outer side wall of the pole is provided with a second clamping groove, and the first plastic part is provided with a convex part inserted and filled in the second clamping groove.

As a preferred scheme of the cover plate assembly, the reinforcing convex rib and the pole column hole are arranged at intervals, the cover plate body is provided with a connecting part, the connecting part is connected between the inner side wall of the reinforcing convex rib and the inner side wall of the pole column hole, the pole column comprises a pole column body, an inserting part is convexly arranged at one end of the pole column body, the radial size of the inserting part is smaller than that of the pole column body, and the inserting part is inserted in the pole column hole so that the pole column body is abutted against the connecting part.

As a preferred scheme of apron subassembly, the apron subassembly still includes the sealing member, the sealing member includes sealed body and sets up along circumference the boss of sealed body one end, sealed body cover is established on the lateral wall of utmost point post body, the boss butt is in connecting portion with between the utmost point post body.

As a preferable scheme of the cover plate assembly, the pole column hole is a kidney-shaped hole or an elliptical hole or a square hole.

As a preferable mode of the cover plate assembly, a cross-sectional dimension of the first through hole is smaller than a cross-sectional dimension of the injection molding groove.

As a preferable scheme of the cover plate assembly, the reinforcing rib is provided with a plurality of first through holes at intervals along the circumferential direction, and the first through holes penetrate through two opposite side walls of the reinforcing rib along the axial direction perpendicular to the first through holes.

As a preferred scheme of apron subassembly, the apron subassembly still includes second plastic part, second plastic part sets up the apron body the second side, second plastic part is provided with the second through-hole, the second through-hole with utmost point post hole intercommunication.

In a second aspect, a battery is provided, which comprises a casing and a core bag arranged in the casing, wherein the casing is provided with an opening communicated with the inside, and the battery further comprises a cover plate assembly which seals the opening.

As a preferable mode of the battery, an explosion-proof valve is provided on the case or the cap assembly.

The utility model has the advantages that: injection moulding's first plastic part can wrap up and strengthen protruding muscle, improve the bonding strength of first injection molding glue and apron body, and first plastic part can also pass first through-hole and fill at the inslot that moulds plastics, can further improve the bonding strength of first plastic part and apron body, thereby guarantee that first plastic part and utmost point post can stabilize on the apron body, need not through fixed utmost point post of riveting structures such as riveting piece, not only can reduce the spare part of apron subassembly, and therefore the cost is reduced, can also reduce the occupation space of apron subassembly, improve the inside space of battery, and then improve the energy density of battery, the part that first plastic part is located first through-hole simultaneously and moulds plastics the inslot can support and strengthen protruding muscle, strengthen protruding muscle non-deformable, can improve the structural strength of apron body.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is an exploded view of the cover plate assembly according to the embodiment of the present invention.

Fig. 2 is a perspective view of the cover plate body according to an embodiment of the present invention.

Fig. 3 is a first cross-sectional view of a cover plate assembly according to an embodiment of the present invention.

Fig. 4 is a second cross-sectional view of a cover plate assembly according to an embodiment of the present invention.

Fig. 5 is a top view of a cover plate body according to another embodiment of the present invention.

Fig. 6 is a perspective view of a battery according to an embodiment of the present invention.

In the figure:

100. a cover plate assembly; 200. a housing;

1. a cover plate body; 11. a pole hole; 12. reinforcing the convex ribs; 13. injection molding a groove; 14. a first through hole; 15. a connecting portion; 2. a pole column; 21. a second card slot; 22. a pole body; 23. a plug-in part; 3. a first plastic part; 31. a convex portion; 4. a seal member; 41. a seal body; 42. a boss; 5. a second plastic part; 51. a second through hole; 6. an explosion-proof valve.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, the utility model provides a pair of apron subassembly 100, including apron body 1, utmost point post 2 and first plastic part 3, apron body 1 runs through and is provided with utmost point post hole 11, utmost point post 2 passes utmost point post hole 11, and utmost point post 2 is connected with first plastic part 3, fix on apron body 1 through first plastic part 3, apron body 1 has the first side and the second side of relative setting, it is provided with enhancement protruding muscle 12 to follow utmost point post hole 11 circumference protrusion on the first side, the second side corresponds the position of strengthening protruding muscle 12 and is formed with the groove 13 of moulding plastics, it runs through the first through-hole 14 that is provided with the intercommunication groove 13 of moulding plastics to strengthen protruding muscle 12, 3 injection moulding of first plastic part is in first side, and 3 parcel of first plastic part are strengthened protruding muscle 12 and are filled in the groove 13 of moulding plastics through first through-hole 14.

Understandably, apron body 1 forms annular groove 13 of moulding plastics from the second side towards first side punching press, and the protrusion forms annular enhancement protruding muscle 12 on first side, utmost point post 2 can insert and establish in utmost point post hole 11, and through the first plastic part 3 of injection moulding on first side, so that first plastic part is connected with utmost point post 2 and apron body 1 respectively, and first plastic part 3 wraps up and strengthens protruding muscle 12, can improve the bonding strength of first injection moulding glue 3 and apron body 1, first plastic part 3 can also pass first through-hole 14 and fill in the groove 13 of moulding plastics, can further improve the bonding strength of first plastic part 3 and apron body 1, thereby guarantee that first plastic part 3 and utmost point post 2 can stabilize on apron body 1, need not to fix utmost point post 2 through riveting structures such as riveting block, can reduce the spare part of apron subassembly 100, the cost is reduced, simultaneously can also reduce the occupation space of apron subassembly 100, improve the inside space utilization of battery, and then improve the energy density of battery, and first plastic part 3 is located first plastic part 14 and the through-hole 12 that the support that the protruding muscle can not deformable in the groove 12 of moulding plastics, the reinforcement structure that can make 1 improve.

Preferably, as shown in fig. 1 and 4, the first through-hole 14 has a cross-sectional size smaller than that of the injection groove 13. The first plastic part 3 of this design is being located first through-hole 14 department and is being formed with the recess, strengthens the part that protruding muscle 12 is located first through-hole 14 department and can block and establish in the recess, further improves first plastic part 3 and strengthens the bonding strength of protruding muscle 12, guarantees that first plastic part 3 can stabilize on apron body 1.

In another embodiment, as shown in fig. 5, the reinforcing rib 12 is provided with a plurality of first through holes 14 at intervals along the circumferential direction, the first through holes 14 penetrate through two opposite side walls of the reinforcing rib 12 along the axial direction perpendicular to the first through holes 14, that is, the cross-sectional dimension of the first through holes 14 is equal to the cross-sectional dimension of the injection molding groove 13, the first through holes 14 can separate the reinforcing rib 12 into a plurality of sub-reinforcing ribs, when the first plastic part 3 is injection molded, the plastic liquid can flow to the injection molding groove 13 through the first through holes 14, and part of the plastic liquid can flow between the outer side and the inner side of the reinforcing rib 12, so that the fluidity of the plastic liquid in the injection molding process can be improved, the thickness of the molded first plastic part 3 is uniform, and the structural strength of the first plastic part 3 is improved.

Specifically, the pole post 2 and the reinforcing rib 12 are in an elliptical shape or a square shape. This design can further improve the bonding strength who strengthens protruding muscle 12 and first plastic part 3 to improve the torsional strength of first plastic part 3, also can 2 and the bonding strength of first plastic part 3 of utmost point post moreover, and then improve the torsional strength of utmost point post 2.

In other embodiments, the pole post 2 and the reinforcing rib 12 may also have a polygonal shape or a special shape, and the specific shape of the pole post 2 and the reinforcing rib 12 is not limited herein.

Specifically, the outer side wall of the pole 2 is provided with an annular second locking groove 21 along the circumferential direction in a recessed manner, and the first plastic part 3 has a convex portion 31 inserted and filled in the second locking groove 21. This design can improve the joint strength of first plastic part 3 and utmost point post 2 to make first plastic part 3 can stabilize with utmost point post 2 and be connected, utmost point post 2 can stabilize on apron body 1 through first plastic part 3, and utmost point post 2 is difficult for taking place to twist reverse, is favorable to improving utmost point post 2's torsional strength.

Further, strengthen between protruding muscle 12 and the utmost point post hole 11 interval setting, apron body 1 has connecting portion 15, connecting portion 15 is connected between the inside wall of strengthening protruding muscle 12 and utmost point post hole 11, utmost point post 2 includes utmost point post body 22, second draw-in groove 21 sets up on utmost point post body 22, the one end protrusion of utmost point post body 22 is provided with grafting portion 23, grafting portion 23's radial dimension is less than utmost point post body 22's radial dimension, grafting portion 23 is in utmost point post hole 11, so that utmost point post body 22 butt is on connecting portion 15. Connecting portion 15 can play the supporting role to utmost point post 2, and first plastic part 3 can not receive the gravity of utmost point post 2 and pull and take place to warp, can guarantee that first plastic part 3 is connected with utmost point post 2 is firm, and connecting portion 15 can improve the structural strength who strengthens protruding muscle 12 moreover to improve the overall structure intensity of apron body 1.

Further, the cover plate assembly 100 further includes a sealing element 4, the sealing element 4 includes a sealing body 41 and a boss 42, the sealing body 41 is sleeved on the outer side wall of the pole body 22, and the boss 42 abuts between the connecting portion 15 and the pole body 22. Because sealing member 4 makes 3 deformations of first plastic part ageing easily with 3 butts of first plastic part for a long time, leads to the sealed effect inefficacy of sealing member 4, the sealing member 4 of this design not only can play sealed effect to apron body 1, and sealing member 4 can not guarantee the sealed effect of sealing member 4 with 3 butts of first plastic part moreover, and 3 non-deformable damages of first plastic part can prolong the life of first plastic part 3.

Specifically, the cover plate assembly 100 further includes a second plastic part 5, the second plastic part 5 is disposed on the bottom surface of the cover plate body 1, the second plastic part 5 is provided with a second through hole 51, and the second through hole 51 is communicated with the pole hole 11. Through setting up second plastic part 5, can play insulating effect to apron body 1, prevent that the inside core package of battery from contacting with apron body 1 and taking place the short circuit.

Specifically, the lid body 1 is provided with a liquid injection hole (not shown) through it so as to inject an electrolyte into the battery.

As shown in fig. 6, the present invention further provides a battery, which includes a housing 200, a core package (not shown) disposed in the housing 200, and the cover plate assembly 100 of any of the above embodiments, wherein the housing 200 is provided with an opening communicated with the inside, and the cover plate assembly 100 blocks the opening. The utility model discloses a 100 occupation spaces of apron subassembly of battery are little, can improve the inside space utilization of battery to improve the energy density of battery.

Specifically, the explosion-proof valve 6 is arranged on the cover plate body 1 of the housing 200 or the cover plate assembly 100, the housing 200 or the cover plate assembly 100 is scored through impact, the scored thickness is smaller than that of the housing 200, and when the pressure inside the battery is too large, the pressure can be relieved by breaking the explosion-proof valve 6, so that the safety performance of the battery is improved. Wherein, explosion-proof valve 6 has annular material area of walking, and the clout that the casing 200 was located the nick department can extrude to walking the material area during the punching press to guarantee explosion-proof valve 6's nick homogeneity.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides an apron subassembly, includes apron body, utmost point post and first plastic part, the apron body runs through and is provided with utmost point post hole, utmost point post passes utmost point post hole, and passes through first plastic part is fixed on the apron body, a serial communication port, the apron body has relative first side and the second side that sets up, follow on the first side utmost point post hole circumference protrusion is provided with strengthens protruding muscle, the second side corresponds the position of strengthening protruding muscle is formed with the groove of moulding plastics, it runs through and is provided with the intercommunication to strengthen protruding muscle the first through-hole in the groove of moulding plastics, first plastic part injection moulding is in on the first side, just first plastic part parcel strengthen protruding muscle and pass through first through-hole is filled the inslot of moulding plastics.

2. The cover plate assembly according to claim 1, wherein the outer side wall annular recess of the pole is provided with a second clamping groove, and the first plastic part is provided with a convex part inserted and filled in the second clamping groove.

3. The cover plate assembly according to claim 2, wherein the reinforcing rib is spaced from the post hole, the cover plate body has a connecting portion connected between an inner sidewall of the reinforcing rib and an inner sidewall of the post hole, the post includes a post body, an insertion portion is convexly provided at one end of the post body, a radial dimension of the insertion portion is smaller than a radial dimension of the post body, and the insertion portion is inserted into the post hole so that the post body abuts against the connecting portion.

4. The cover plate assembly according to claim 3, further comprising a sealing element, wherein the sealing element comprises a sealing body and a boss circumferentially arranged at one end of the sealing body, the sealing body is sleeved on the outer side wall of the pole body, and the boss abuts between the connecting portion and the pole body.

5. The cover plate assembly of claim 1, wherein the polar cylindrical bore is a kidney bore or an elliptical bore or a square bore.

6. The lid assembly according to any one of claims 1 to 5, wherein the first through hole has a cross-sectional dimension smaller than a cross-sectional dimension of the injection groove.

7. The decking assembly defined in any one of claims 1 to 5 wherein the reinforcing bead is provided with a plurality of the first through-holes at circumferentially spaced intervals, the first through-holes extending through opposite side walls of the reinforcing bead in a direction perpendicular to the axis of the first through-holes.

8. The cover plate assembly according to any one of claims 1 to 5, further comprising a second plastic member disposed on the second side surface of the cover plate body, the second plastic member being provided with a second through hole, the second through hole being in communication with the post hole.

9. A battery comprising a casing and a core package disposed within the casing, the casing being provided with an opening communicating with the interior, characterized by further comprising a cover plate assembly according to any one of claims 1 to 8, the cover plate assembly closing off the opening.

10. The battery of claim 9, wherein an explosion-proof valve is disposed on the housing or the cover assembly.