CN214280081U

CN214280081U - Battery cover plate assembly and battery with same

Info

Publication number: CN214280081U
Application number: CN202120604334.5U
Authority: CN
Inventors: 孙倩倩; 许久凌
Original assignee: CALB Technology Co Ltd
Current assignee: Avic Innovation Technology Research Institute Jiangsu Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-09-24
Anticipated expiration: 2031-03-23

Abstract

The utility model relates to a battery technology field provides a battery cover plate subassembly and have its battery. A battery cover plate assembly, comprising: the cover plate body is provided with a liquid injection hole; the sealing element is at least partially arranged in the liquid injection hole so as to seal the liquid injection hole, and a first inclined surface is arranged at the bottom of the liquid injection hole and inclines outwards along the radial direction of the liquid injection hole; the sealing core is arranged in the sealing element and riveted with the sealing element, and the sealing core can enable the sealing element to swell along the radial direction of the sealing core so that the sealing element is in direct contact with the first inclined plane and is fixedly connected with the cover plate body. Due to the arrangement of the first inclined plane, when the sealing element swells, the sealing element does not generate large friction with the bottom of the liquid injection hole, and therefore metal chips are avoided.

Description

Battery cover plate assembly and battery with same

Technical Field

The utility model relates to a battery technology field especially relates to a battery cover plate subassembly and have its battery.

Background

The liquid injection holes of the battery need to be sealed after liquid injection is finished. Among the correlation technique, annotate liquid hole seal structure and be mostly hard material, sealed annotate liquid hole bottom easily with apron friction production metal fillings, the battery that drops causes the safety problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery cover plate subassembly and have its battery to improve the sealed effect of annotating the liquid hole.

According to the utility model discloses a first aspect provides a battery cover plate subassembly, include:

the cover plate body is provided with a liquid injection hole;

the sealing element is at least partially arranged in the liquid injection hole so as to seal the liquid injection hole, and a first inclined surface is arranged at the bottom of the liquid injection hole and inclines outwards along the radial direction of the liquid injection hole;

the sealing core is arranged in the sealing element and riveted with the sealing element, and the sealing core can enable the sealing element to swell along the radial direction of the sealing core so that the sealing element is in direct contact with the first inclined plane and is fixedly connected with the cover plate body.

The utility model discloses battery cover plate subassembly includes apron body, sealing member and sealed core, through riveting sealed core and sealing member to can make the sealing member swell along the radial direction of sealed core, so that sealing member and first inclined plane direct contact have guaranteed the reliable sealed of sealing member to annotating the liquid hole promptly. And because the first inclined plane is arranged, the sealing element can not generate large friction with the bottom of the liquid injection hole when the sealing element is expanded, so that metal chips are avoided.

According to a second aspect of the present invention, there is provided a battery, comprising the above battery cover plate assembly.

The utility model discloses a battery of embodiment is including apron body, sealing member and sealed core, through riveting sealed core and sealing member to can make the sealing member swell along the radial direction of sealed core, so that sealing member and first inclined plane direct contact have guaranteed the reliable sealed of sealing member to annotating the liquid hole promptly. And because the first inclined plane is arranged, the sealing element can not generate large friction with the bottom of the liquid injection hole when the sealing element is expanded, so that metal chips are avoided.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic cross-sectional view illustrating a seal core of a battery cover plate assembly before caulking according to a first exemplary embodiment;

fig. 2 is a schematic cross-sectional view illustrating a seal core of a battery cover plate assembly after riveting according to a first exemplary embodiment;

fig. 3 is a schematic sectional view illustrating a structure of a sealing core of a battery cover plate assembly before caulking according to a second exemplary embodiment;

fig. 4 is a schematic cross-sectional view illustrating a seal core of a battery cover plate assembly after riveting according to a second exemplary embodiment;

fig. 5 is a schematic sectional view illustrating a structure of a sealing core of a battery cover plate assembly before caulking according to a third exemplary embodiment;

fig. 6 is a schematic cross-sectional view illustrating a seal core of a battery cover plate assembly after caulking according to a third exemplary embodiment;

fig. 7 is a sectional combination structure view of an insulating member and a cap plate body before caulking a sealing core of a battery cap plate assembly according to a second exemplary embodiment;

fig. 8 is a schematic sectional exploded view illustrating an insulating member and a cap plate body before caulking a sealing core of a battery cap plate assembly according to a second exemplary embodiment;

fig. 9 is a sectional combination structure view of an insulating member and a cap plate body before caulking a sealing core of a battery cap plate assembly according to a third exemplary embodiment;

fig. 10 is a sectional exploded view schematically illustrating an insulating member and a cap plate body before caulking a sealing core of a battery cap plate assembly according to a third exemplary embodiment;

FIG. 11 is a schematic diagram illustrating a cross-sectional structure of a pour hole of a battery cover plate assembly according to an exemplary embodiment;

FIG. 12 is a schematic sectional view showing a structure of a pour hole of a battery cover plate assembly according to another exemplary embodiment;

fig. 13 is a schematic view of a structure of an insulator of a battery cover plate assembly according to an exemplary embodiment;

fig. 14 is a schematic cross-sectional view illustrating an insulating member of a battery cover plate assembly according to an exemplary embodiment.

The reference numerals are explained below:

10. a cover plate body; 11. a liquid injection hole; 111. a first inclined surface; 112. a first bore section; 113. a second bore section; 114. a first step surface; 116. a third bore section; 117. a second step surface; 12. an upper surface; 13. a lower surface; 20. a seal member; 21. a sealing cap; 22. a sealing body; 23. a projection; 30. a seal ring; 40. sealing the core; 41. riveting; 42. a mandrel body; 43. a weakened portion; 50. an insulating member; 51. a mesh groove; 511. a through hole; 512. an inclined surface; 513. a bottom wall; 514. a side wall; 515. a horizontal plane.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides a battery cover plate assembly, please refer to fig. 1 to 14, the battery cover plate assembly includes: the cover plate comprises a cover plate body 10, wherein a liquid injection hole 11 is formed in the cover plate body 10; a sealing member 20, at least part of the sealing member 20 being provided in the pouring hole 11 to seal the pouring hole 11, the bottom of the pouring hole 11 being provided with a first inclined surface 111, the first inclined surface 111 being inclined outward in the radial direction of the pouring hole 11; and a seal core 40, wherein the seal core 40 is disposed in the seal 20 and riveted with the seal 20, and the seal core 40 can bulge the seal 20 along the radial direction of the seal core 40, so that the seal 20 is directly contacted with the first inclined surface 111 and is fixedly connected with the cover plate body 10.

The utility model discloses a battery cover plate subassembly of embodiment includes apron body 10, sealing member 20 and sealed core 40, through riveting sealed core 40 with sealing member 20 to can make sealing member 20 bulge along sealed core 40's radial direction, so that sealing member 20 and first inclined plane 111 direct contact, guaranteed sealing member 20 promptly to annotating the reliable sealed of liquid hole 11. Moreover, due to the arrangement of the first inclined surface 111, when the sealing member 20 is expanded, no large friction is generated with the bottom of the liquid injection hole 11, so that the generation of metal chips is avoided.

It should be noted that, as shown in fig. 11 and 12, the bottom of the pour hole 11 is provided with the first inclined surface 111, that is, the wall surface of the pour hole 11 is not extended in the same direction, and there is a first inclined surface 111 at the bottom of the pour hole 11, and the first inclined surface 111 is inclined outward in the radial direction of the pour hole 11, that is, the bottom of the pour hole 11 is formed with an outward-expanding structure, so that the area of the bottom of the pour hole 11 is increased, and therefore, when the packing 20 is expanded in the radial direction of the packing core 40, the bottom of the pour hole 11 is not excessively pressed.

Further, annotate liquid hole 11 bottom and be provided with first inclined plane 111, can form first chamfer in annotating liquid hole 11 bottom promptly to make and annotate and formed a transition structure between 11 bottoms of liquid hole and the lower surface 13 of apron body 10, thereby avoid annotating and form the right angle between 11 bottoms of liquid hole and the lower surface 13 of apron body 10, avoid sealing member 20 and annotate liquid hole bottom right angle direct contact, produce the metal fillings, cause battery safety risk.

Since the hole wall of the pour hole 11 is an annular surface, the first inclined surface 111 is also an annular closed surface.

The rivet 41 includes a seal core 40, a mandrel body 42, and a weakened portion 43 between the seal core 40 and the mandrel body 42, the seal core 40 having a radial dimension at the rivet 41 no smaller than the mandrel body 42, the weakened portion 43 having a radial dimension at the rivet 41 smaller than the mandrel body 42. The seal core 40 and the mandrel body 42 can be positioned within the seal 20 such that when the mandrel body 42 is pulled, the seal core 40 moves upward while pressing the seal 20 in a radial direction causing it to expand and increase in size in a radial direction. When pulled to a certain extent, the rivet 41 can be broken at the weakened portion 43, so that the mandrel body 42 can be taken out.

It should be noted that the sealing member 20 may be provided with a through hole or a groove, and the sealing core 40 is disposed in the through hole or the groove.

The sealing member 20 is in direct contact with the first inclined surface 111, that is, the sealing member 20 can be reliably contacted with the cover body 10, thereby achieving a fixed connection therebetween.

In one embodiment, the vertical distance between the two ends of the first inclined surface 111 is 30% -80% of the height of the liquid filling hole 11, so as to ensure that the first inclined surface 111 has a sufficient length to avoid excessive pressing on the bottom of the liquid filling hole 11 when the sealing member 20 is expanded along the radial direction of the sealing core 40.

In one embodiment, the cross-sectional line of the first inclined surface 111 in the axial direction of the pour hole 11 includes at least one of a straight line and a curved line, i.e., the first inclined surface 111 may extend in a straight line direction, may extend in a curved line direction, or may extend partially in a straight line direction and partially in a curved line direction.

Further, the bottom of the liquid pouring hole 11 is provided with a first inclined surface 111, i.e. a first chamfer is formed at the bottom of the liquid pouring hole 11, and the first chamfer can be an obtuse angle or a fillet, as shown in fig. 11 and 12.

In one embodiment, the first inclined surface 111 may be formed by a blunt angle, and the first inclined surface 111 is inclined at an angle of 15 ° to 75 ° to ensure that the sealing member 20 does not fall out of the pour hole 11, so that the bottom of the pour hole 11 is not stressed too much.

In one embodiment, the first inclined surface 111 may be formed by a rounded corner, and the radius of curvature of the first inclined surface 111 is 0.1mm to 0.5mm, so as to ensure that the sealing member 20 does not fall out of the pour hole 11, and the bottom of the pour hole 11 is not subjected to too much force.

In one embodiment, the pour hole 11 is a stepped hole, the pour hole 11 includes a first hole section 112, a second hole section 113, and a first step surface 114 connecting the first hole section 112 and the second hole section 113, and a second inclined surface is provided at the junction of the first hole section 112 and the first step surface 114; wherein, one end of the first hole section 112 away from the first step surface 114 is provided with a first inclined surface 111. The second inclined surface prevents the junction of the first bore section 112 and the first stepped surface 114 from forming a right angle, thereby ensuring that the sealing member 20 does not overly press the junction of the first bore section 112 and the first stepped surface 114.

In one embodiment, the pour hole 11 is a stepped hole, the pour hole 11 includes a first hole section 112, a second hole section 113, a third hole section 116, a first step surface 114 connecting the first hole section 112 and the second hole section 113, and a second step surface 117 connecting the second hole section 113 and the third hole section 116, a second inclined surface is provided at the junction of the first hole section 112 and the first step surface 114, and a third inclined surface is provided at the junction of the second hole section 113 and the second step surface 117.

It should be noted that the second inclined surface and the third inclined surface may both be formed by chamfers, that is, a second chamfer is provided at a joint of the first hole section 112 and the first step surface 114, and a third chamfer is provided at a joint of the second hole section 113 and the second step surface 117.

In one embodiment, the sealing member 20 includes a sealing cap 21 and a sealing body 22, at least a portion of the sealing core 40 is located within the sealing body 22, the battery cover plate assembly further includes: the sealing ring 30, at least part of the sealing ring 30 is positioned between the sealing cap 21 and the cover plate body 10, and the sealing ring 30 and the sealing element 20 are matched, so that the reliable sealing of the liquid injection hole 11 is realized.

In one embodiment, the gasket 30 is disposed in the pour spout 11 and covers a portion of the spout wall of the pour spout 11, thereby sealing the pour spout 11 while ensuring that the sealing body 22 is in direct contact with the first inclined surface 111.

It should be noted that the sealing ring 30 herein includes two openings, i.e., two openings through which the two ends of the sealing member 20 can respectively pass through the sealing ring 30.

In one embodiment, the sealing cap 21 and the cover plate body 10 are in limited contact to control the compression amount of the sealing ring 30, so as to avoid the insufficient compression or the excessive compression of the sealing ring 30, and improve the sealing effect of the liquid filling hole 11.

It should be noted that, because the sealing cap 21 is in spacing contact with the cover plate body 10, that is, the height formed between the sealing cap 21 and the cover plate body 10 for accommodating the sealing ring 30 is fixed, the control of the compression amount of the sealing ring 30 can be realized by controlling the height, and the sealing effect and the service life of the sealing ring are prevented from being influenced by the overlarge or overlow sealing ring 30. If there is no spacing contact between the sealing cap 21 and the cover body 10, the spacing between the sealing cap 21 and the cover body 10 is actually reached after the sealing ring 30 is compressed to the limit, i.e. the relative position is fixed.

The sealing cap 21 is close to the upper surface 12 of the cap body 10, i.e., the lower surface of the sealing cap 21 may be close to the upper surface 12 of the cap body 10, i.e., the sealing cap 21 may be located outside the upper surface 12 of the cap body 10. Alternatively, the upper surface of the sealing cap 21 may be close to the upper surface 12 of the cap body 10, i.e., the sealing cap 21 may be located within the cap body 10.

At least a portion of the seal ring 30 is located between the lower surface of the seal cap 21 and the cover plate body 10, i.e., the seal cap 21 and the cover plate body 10 are in limit contact, for controlling the axial compression of the seal ring 30.

In some embodiments, the sealing core 40 is riveted with the sealing element 20, and the sealing core 40 can bulge the sealing main body 22 along a radial direction of the sealing core 40 to fixedly connect the sealing main body 22 with the cap body 10, so as to prevent the sealing element 20 from being separated from the cap body 10.

Specifically, during installation, at least a portion of the sealing body 22 may be located in the injection hole 11, and when the mandrel body 42 is pulled, the sealing core 40 moves upward, and simultaneously presses the sealing body 22 in the radial direction, so that the sealing body 22 expands and increases in size in the radial direction, thereby enabling the sealing body 22 to be in interference fit or transition fit with the injection hole 11, and thus ensuring that the sealing cap 21 is fixedly connected with the cover plate body 10.

Or, during the installation process, part of the sealing main body 22 can be located outside the liquid injection hole 11, and when the mandrel body 42 is pulled, the sealing core 40 moves upwards, and simultaneously, the sealing main body 22 is pressed in the radial direction, so that the sealing main body 22 expands in the radial direction and increases in size, and the part of the sealing main body 22 located outside the liquid injection hole 11 forms the bulge 23, and the bulge 23 can prevent the sealing main body 22 from being separated from the cover plate body 10, namely the sealing cap 21 and the bulge 23 clamp the cover plate body 10, and reliable limit of the sealing element 20 is realized.

In one embodiment, the sealing cap 21 and the cover plate body 10 are in direct limit contact, that is, the sealing cap 21 and the cover plate body 10 are in limit contact without other components, and the two are in direct contact, so that the limit is formed, and the arrangement of the structure is simplified. Specifically, at least one of the sealing cap 21 and the cover plate body 10 may be provided with a limiting structure, the limiting structure implements limiting contact between the sealing cap 21 and the cover plate body 10, and the limiting contact may control a height of a space for accommodating the sealing ring 30, so as to control a compression amount of the sealing ring 30.

It should be noted that, the sealing cap 21 and the cover plate body 10 are in direct limit contact, that is, the sealing cap 21 and the cover plate body 10 may be in direct surface contact, and the contact surface of the two may be a plane, a curved surface, or a combination of a plane and a curved surface, which is not limited herein, for example, the limit contact of a protrusion and a protrusion, the limit contact of a protrusion and a groove, and the like, the limit structure at this time may be understood as a surface, a protrusion, a groove, and the like, and it is important that the height of the space formed between the sealing cap 21 and the cover plate body 10 for accommodating the sealing ring 30 is determined.

In some embodiments, the cover plate body 10 may be provided with a mounting groove spaced apart from the injection hole 11, the sealing ring 30 is disposed in the mounting groove, and the sealing cap 21 is pressed on the sealing ring 30, so that the sealing ring 30 can still seal the injection hole 11.

In some embodiments, at least part of the sealing ring 30 is located in the pouring spout 11, i.e. both the sealing ring 30 and the sealing element 20 are located in the pouring spout 11, thereby achieving sealing of the pouring spout 11.

In one embodiment, referring to fig. 1 and 2, the sealing cap 21 is in limit contact with the upper surface 12 of the cover plate body 10, i.e. the sealing cap 21 is located outside the pour hole 11, and the sealing cap 21 is in limit contact with the upper surface 12 of the cover plate body 10, thereby controlling the compression amount of the sealing ring 30.

Specifically, the pour hole 11 is a stepped hole, the pour hole 11 includes a first hole segment 112, a second hole segment 113, and a first stepped surface 114 connecting the first hole segment 112 and the second hole segment 113, and the sectional area of the first hole segment 112 is smaller than that of the second hole segment 113. The seal ring 30 is located within the second bore section 113 and is clamped between the seal cap 21 and the first step surface 114. As shown in fig. 1, the seal core 40 and the mandrel body 42 are positioned within the seal 20 such that when the mandrel body 42 is pulled, the seal core 40 moves upward while compressing the seal 20 in a radial direction causing it to expand and increase in size in a radial direction. When pulled to a certain extent, the rivet 41 can be broken at the weakened portion 43, so that the mandrel rod 42 can be taken out, and the structure shown in fig. 2 is formed, that is, the seal core 40 can bulge the seal main body 22 along the radial direction of the seal core 40, so that the seal main body 22 is fixedly connected with the cover plate body 10, and the seal 20 is prevented from being separated from the cover plate body 10.

In one embodiment, the pour hole 11 is a stepped hole, the sealing cap 21 is in spacing contact with a stepped surface in the stepped hole, i.e., at least a portion of the sealing cap 21 is located in the pour hole 11, and the sealing cap 21 is in spacing contact with the stepped surface, thereby controlling the compression amount of the gasket 30.

Specifically, the pour hole 11 includes a first hole section 112, a second hole section 113, a third hole section 116, a first step surface 114 connecting the first hole section 112 and the second hole section 113, and a second step surface 117 connecting the second hole section 113 and the third hole section 116, wherein the sectional areas of the first hole section 112, the second hole section 113, and the third hole section 116 are sequentially increased, the seal ring 30 is located in the second hole section 113 and clamped between the seal cap 21 and the first step surface 114, and the seal cap 21 is located in the third hole section 116 and is in spacing contact with the second step surface 117. As shown in fig. 3, the seal core 40 and the mandrel body 42 are positioned within the seal 20 such that when the mandrel body 42 is pulled, the seal core 40 moves upward while compressing the seal 20 in a radial direction causing it to expand and increase in size in a radial direction. When pulled to a certain extent, the rivet 41 can be broken at the weakened portion 43, so that the mandrel rod 42 can be taken out, and the structure shown in fig. 4 is formed, that is, the seal core 40 can bulge the seal main body 22 along the radial direction of the seal core 40, so that the seal main body 22 is fixedly connected with the cover plate body 10, and the seal 20 is prevented from being separated from the cover plate body 10.

Optionally, a first hole section 112, a second hole section 113 and a first step surface 114 connecting the first hole section 112 and the second hole section 113 are included, and the cross-sectional area of the first hole section 112 is smaller than that of the second hole section 113. The seal ring 30 is located in the second hole section 113 and clamped between the seal cap 21 and the first step surface 114, the seal cap 21 is of a step-shaped structure, the seal ring 30 is arranged around the small-diameter portion of the seal cap 21, the end surface of the small-diameter portion of the seal cap 21 is in limited contact with the first step surface 114, and the end surface of the large-diameter portion of the seal cap 21 is in contact with the seal ring 30. As shown in fig. 5, the seal core 40 and the mandrel body 42 are positioned within the seal 20 such that when the mandrel body 42 is pulled, the seal core 40 moves upward while compressing the seal 20 in a radial direction causing it to expand and increase in size in a radial direction. When pulled to a certain extent, the rivet 41 can be broken at the weakened portion 43, so that the mandrel rod 42 can be taken out, and the structure shown in fig. 6 is formed, that is, the seal core 40 can bulge the seal main body 22 along the radial direction of the seal core 40, so that the seal main body 22 is fixedly connected with the cover plate body 10, and the seal 20 is prevented from being separated from the cover plate body 10.

In one embodiment, the battery cover plate assembly further includes a limiting member, the limiting member is located between the sealing cap 21 and the cover plate body 10, and the sealing cap 21 and the cover plate body 10 are in limiting contact through the limiting member, that is, the limiting member is a third component outside the sealing cap 21 and the cover plate body 10, and the sealing cap 21 and the cover plate body 10 are in limiting contact through the third component, so as to control the compression amount of the sealing ring 30.

It should be noted that the specific structure of the limiting member is not limited, and may be a bump or other related structure as long as the limiting member can perform the limiting function. For example, a groove is provided on the cap body 10, and a projection is provided in the groove and partially protrudes from the upper surface 12 of the cap body 10 to form a limit contact with the sealing cap 21.

In one embodiment, the compression of the seal ring 30 is 10% -50%, so as to avoid the seal ring 30 from being compressed insufficiently or excessively, thereby improving the sealing effect of the liquid filling hole 11.

Optionally, the compression amount of the sealing ring 30 is 20% to 30%, so that the compression amount of the sealing ring 30 is ensured to be within a reliable range, and the service life of the sealing ring 30 can also be ensured.

In one embodiment, one end of the sealing element 20 protrudes out of the lower surface 13 of the cover plate body 10, so that a protrusion 23 is formed on the part of the sealing main body 22 of the sealing element 20, which is located outside the liquid injection hole 11, and the protrusion 23 can prevent the sealing main body 22 from being separated from the cover plate body 10, i.e. the sealing cap 21 and the protrusion 23 clamp the cover plate body 10, and reliable limit of the sealing element 20 is realized.

Optionally, the length of the sealing element 20 protruding the lower surface 13 of the cover plate body 10 is 1mm to 3mm, that is, the length of the sealing main body 22 protruding the lower surface 13 of the cover plate body 10 is 1mm to 3mm, which can ensure reliable position limitation of the protruding portion 23 and does not occupy too large space. By controlling the length of the sealing main body 22 exceeding the cover plate body 10, the sealing performance of the sealing main body 22 is controlled, the sealing main body 22 is too long, the bulging distance of the sealing main body 22 is long, the battery space ratio is low, and the sealing main body 22 is not bulged and can be broken completely to influence the sealing performance. The sealing body 22 is too short, the sealing body 22 bulges unevenly, and the sealing body 22 is easy to be separated in the subsequent process, which affects the sealing performance of the battery.

In one embodiment, as shown in fig. 7 to 12, the battery cover plate assembly further includes: insulating part 50, insulating part 50 are located the lower surface 13 of apron body 10, are provided with the net groove 51 on insulating part 50, are provided with through-hole 511 on the net groove 51, and net groove 51 sets up with annotating liquid hole 11 relatively, and the net groove 51 can guarantee that electrolyte can normally pass through, and can collect external component, can avoid external component to enter into inside the battery, for example when dismantling sealing member 20, can be with the sealing member 20 of dismantling by net groove 51 storage.

Specifically, as shown in fig. 7 and 8, in the assembled configuration and the disassembled configuration of the insulating member 50 and the lid body 10 shown in fig. 3, the mesh groove 51 is provided to face the pour hole 11, thereby protecting the pour hole 11 and preventing an external member entering from the pour hole 11 from falling into the battery.

Alternatively, as shown in fig. 9 and 10, in the combined structure and the exploded structure of the insulating member 50 and the cover plate body 10 formed on the basis of fig. 4, the mesh groove 51 is disposed opposite to the pour hole 11, so as to form a protection against the pour hole 11 and prevent an external member entering from the pour hole 11 from falling into the battery.

After the insulating member 50 and the cover body 10 are connected, the mandrel bar 42 may be pulled, and when the mandrel bar 42 is pulled to a certain extent, the rivet 41 may be broken at the weakened portion 43, so that the mandrel bar 42 may be removed. Of course, in some embodiments, it is not excluded to first remove the mandrel body 42 and then attach the insulator 50 to the cover body 10.

In some embodiments, the bottom wall 513 of the mesh trough 51 may be a horizontal plane.

In one embodiment, at least part of the bottom wall 513 of the mesh trough 51 is inclined, i.e. the depth of the mesh trough 51 is not uniform, but is partially deeper, which allows the external part entering from the pouring hole 11 to fall into a deeper position, which prevents the external part from blocking the pouring hole 11. The opening of the mesh groove 51 is directed toward the bottom end of the pour hole 11, i.e., the opening of the mesh groove 51 is disposed near the pour hole 11.

It should be noted that, since the liquid inlet 11 is open when the electrolyte is injected, it is not excluded that an external member enters through the liquid inlet 11, and therefore, the provision of the mesh groove 51 can avoid a subsequent problem caused by the external member entering through the liquid inlet 11 directly falling into the battery. Or after the pour hole 11 is sealed, the need to remove the seal structure is not eliminated, and the seal structure may enter the mesh groove 51.

In some embodiments, the bottom wall 513 of the mesh trough 51 may be formed with a recess which may be located opposite the pour hole 11 so that the outer member falls directly into the recess after it has entered the mesh trough 51, and so does not block the pour hole 11 due to the greater depth of the recess.

In some embodiments, the lowest point of the bottom wall 513 of the mesh trough 51 may not be directly opposite to the bottom of the pour hole 11, and in this case, the external member may roll down to the lowest point of the bottom wall 513 after entering the mesh trough 51, thereby not blocking the pour hole 11.

In one embodiment, the length of the mesh groove 51 in the preset direction is greater than the length of the pour hole 11 in the preset direction, i.e., the storage area in the mesh groove 51 is relatively large, and therefore clogging of the pour hole 11 is not easily caused.

The preset direction may be the longitudinal direction or the width direction of the mesh groove 51, but is not limited thereto, and the cross-sectional area of the storage space in which the mesh groove 51 is formed is larger than the cross-sectional area of the pour hole 11.

Optionally, the length of the mesh groove 51 in the preset direction is 5mm to 10mm greater than the length of the liquid injection hole 11 in the preset direction, that is, the occupied area of the mesh groove 51 is not too large on the basis of ensuring that the mesh groove 51 has a sufficient storage area.

In one embodiment, the bottom wall 513 of the mesh trough 51 is at least partially inclined with respect to the pouring hole 11, i.e. the external part that has fallen into the mesh trough 51 from the pouring hole 11 can be caused to roll down along the inclined bottom wall 513 to a lower position.

In one embodiment, the bottom wall 513 of the wire groove 51 includes an inclined surface 512, the inclined surface 512 including at least one of a flat surface or an arc surface; the member that has entered the mesh groove 51 through the pour hole 11 can slide down the inclined surface 512 to a position where the mesh groove 51 is deviated from the bottom of the pour hole 11, thereby preventing the member that has entered the mesh groove 51 from blocking the pour hole 11.

Specifically, the bottom wall 513 of the mesh trough 51 may include an inclined surface 512, one end of the inclined surface 512 is higher and the other end is lower, and the middle position of the inclined surface 512 may be directly opposite to the pouring hole 11, so that after the member enters the mesh trough 51 from the pouring hole 11, the member rolls down along the inclined surface 512 to the lower position of the bottom wall 513, thereby being offset from the pouring hole 11 and avoiding blocking the pouring hole 11.

Alternatively, the bottom wall 513 may include only one inclined surface 512, i.e., the bottom wall 513 is entirely inclined. Alternatively, the bottom wall 513 may include an inclined surface 512 and a horizontal surface 515, and the part may roll down the inclined surface 512 to the horizontal surface 515. Alternatively, the bottom wall 513 may include at least one inclined surface 512 and at least one horizontal surface 515, etc., which are not limited herein.

In some embodiments, the inclined surface 512 may be at least one of a flat surface and a curved surface.

In one embodiment, the inclined surface 512 extends along one end of the bottom wall 513 to the other end of the bottom wall 513, i.e. the bottom wall 513 is entirely the inclined surface 512, thereby ensuring that the external components falling into the mesh trough 51 from the liquid injection holes 11 can be concentrated at a relatively determined position.

In one embodiment, one end of the inclined surface 512 is opposite to the end of the liquid injection hole 11 contacting with the cover plate body 10, i.e. the starting point of the inclined surface 512 is the side of the liquid injection hole 11, so that the liquid injection hole 11 completely corresponds to the inclined surface 512, and it is also possible to avoid the insulating member 50 occupying a large space, affecting the space utilization rate inside the battery, and avoiding occupying the space of the battery cover plate assembly such as an explosion-proof valve.

It should be noted that, when one end of the inclined surface 512 faces the end of the pouring hole 11 that contacts the lid main body 10, i.e., when a straight line is given in the radial direction of the pouring hole 11, the starting point of the inclined surface 512 is the one end of the straight line and extends toward the other end of the straight line, thereby forming the inclined surface 512.

In one embodiment, the bottom wall 513 of the mesh groove 51 comprises an inclined surface 512, the inclined surface 512 comprises a flat surface, and the included angle between the inclined surface 512 and the cover plate body 10 is 10-70 degrees, so as to ensure that the component can roll down along the inclined surface 512 to a position where the bottom wall 513 is relatively lower.

In one embodiment, as shown in fig. 11 and 12, at least one of the bottom wall 513 and the side wall 514 of the mesh groove 51 is provided with a through hole 511, thereby ensuring that the electrolyte can be reliably discharged.

Optionally, there are at least two through holes 511.

In some embodiments, the through holes 511 are circular holes, elliptical holes, triangular holes, or polygonal holes, so as to ensure the electrolyte to reliably pass through.

In one embodiment, the depth of the mesh slot 51 is 3mm to 7mm, and the occupied space of the mesh slot 51 can be controlled to a minimum extent on the basis of ensuring that components falling into the mesh slot 51 can be stored.

The utility model discloses a battery cover plate subassembly is through the spacing contact of cap 21 and apron body 10 sealed to can control sealing washer 30's decrement, avoid sealing washer 30 decrement too big, lead to sealing washer 30 ageing serious, influence the life of sealing washer.

The utility model discloses a battery cover plate subassembly can avoid the sealing member bloating process and annotate liquid hole bottom right angle department friction through the setting on first inclined plane, produces the metal fillings and causes battery safety.

An embodiment of the utility model also provides a battery, including foretell battery cover plate subassembly.

The utility model discloses a battery of an embodiment includes apron body 10, sealing member 20 and sealed core 40, through riveting sealed core 40 with sealing member 20 to can make sealing member 20 bulge along sealed core 40's radial direction, so that sealing member 20 and first inclined plane 111 direct contact, guaranteed sealing member 20 promptly to annotating the reliable sealed of liquid hole 11. Moreover, due to the arrangement of the first inclined surface 111, when the sealing member 20 is expanded, no large friction is generated with the bottom of the liquid injection hole 11, so that the generation of metal chips is avoided.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery cover plate assembly, comprising:

the cover plate comprises a cover plate body (10), wherein a liquid injection hole (11) is formed in the cover plate body (10);

a sealing member (20), at least part of the sealing member (20) being provided in the pouring hole (11) to seal the pouring hole (11), the bottom of the pouring hole (11) being provided with a first inclined surface (111), the first inclined surface (111) being inclined outward in the radial direction of the pouring hole (11);

a seal core (40), wherein the seal core (40) is arranged in the seal (20) and riveted with the seal (20), and the seal core (40) can bulge the seal (20) along the radial direction of the seal core (40) so that the seal (20) is directly contacted with the first inclined surface (111) and is fixedly connected with the cover plate body (10).

2. The battery cover plate assembly according to claim 1, wherein the vertical distance between the two ends of the first inclined surface (111) is 30-80% of the height of the liquid injection hole (11).

3. The battery cover plate assembly according to claim 1, wherein a cross-sectional line of the first inclined surface (111) in the axial direction of the pour hole (11) includes at least one of a straight line and a curved line.

4. The battery cover plate assembly according to claim 1, wherein the first inclined surface (111) is inclined at an angle of 15 ° -75 °, or the radius of curvature of the first inclined surface (111) is 0.1mm-0.5 mm.

5. The battery cover plate assembly according to claim 1, wherein the pour hole (11) is a stepped hole, the pour hole (11) comprises a first hole section (112), a second hole section (113) and a first stepped surface (114) connecting the first hole section (112) and the second hole section (113), and a second inclined surface is provided at the junction of the first hole section (112) and the first stepped surface (114);

wherein one end of the first hole section (112) far away from the first step surface (114) is provided with the first inclined surface (111).

6. The battery cover plate assembly of claim 1, wherein the seal (20) comprises a seal cap (21) and a seal body (22), at least a portion of the seal core (40) being located within the seal body (22), the battery cover plate assembly further comprising:

a seal ring (30), at least a portion of the seal ring (30) being located between the seal cap (21) and the closure body (10).

7. The battery cover plate assembly according to claim 6, wherein the sealing ring (30) is disposed in the pour hole (11) and covers a portion of the wall of the pour hole (11).

8. The battery cover plate assembly of claim 6, wherein the sealing cap (21) is in positive contact with the cover plate body (10) to control the amount of compression of the sealing ring (30).

9. The battery cover plate assembly of claim 1, further comprising:

the insulating part (50), the insulating part (50) are located lower surface (13) of apron body (10), be provided with net groove (51) on insulating part (50), be provided with through-hole (511) on net groove (51), net groove (51) with annotate liquid hole (11) and set up relatively.

10. A battery comprising the battery cover plate assembly of any of claims 1-9.