CN217507492U - Secondary battery top cover plate and secondary battery - Google Patents
Secondary battery top cover plate and secondary battery Download PDFInfo
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- CN217507492U CN217507492U CN202221098202.0U CN202221098202U CN217507492U CN 217507492 U CN217507492 U CN 217507492U CN 202221098202 U CN202221098202 U CN 202221098202U CN 217507492 U CN217507492 U CN 217507492U
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- secondary battery
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- 238000009434 installation Methods 0.000 claims abstract description 7
- 210000005056 cell body Anatomy 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 7
- 239000012212 insulator Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The application relates to a secondary battery top cap piece and secondary battery, it includes: the cover plate comprises a cover plate body, a first cover plate and a second cover plate, wherein a first surface and a second surface are respectively arranged on two opposite sides of the cover plate body; the groove part is arranged on the first surface and extends from the first surface to the second surface; the protruding portion is arranged on the second surface and forms an installation end face on the end face far away from the second surface, the installation end face is parallel to the second surface, the installation end face at least covers the projection area of the groove portion on the second surface, and a pole post hole communicated with the groove portion penetrates through the installation end face. Transfer this partial space to the opposite side of top cap piece in this application, the week side space of bellying promptly, and then this partial space can be used to the volume expansion of electric core or set up relevant part for this partial space obtains effective utilization, improves secondary battery's space utilization.
Description
Technical Field
The application relates to the technical field of secondary batteries, in particular to a secondary battery top cover plate and a secondary battery.
Background
The top cover plate of the current secondary battery is generally a plane or partially protrudes to a certain height in the direction far away from the battery core. Because the pole has a considerable height, the height of the body from the top of the pole to the top cover plate is higher, and the height of the body is often more than 3mm, even 6mm and 7 mm. This causes a high space of the secondary battery to be seriously wasted and not fully utilized, and thus, there is a need for further improvement.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a secondary battery top cover plate and a secondary battery to solve the problem that space around a pole column is wasted seriously in the related technology.
In a first aspect, a secondary battery top cover sheet is provided.
A secondary battery top cover sheet, comprising:
the cover plate comprises a cover plate body, a first cover plate and a second cover plate, wherein a first surface and a second surface are respectively arranged on two opposite sides of the cover plate body;
the groove part is arranged on the first surface and extends from the first surface to the second surface;
the protruding portion is arranged on the second surface and extends to one side far away from the first surface, the end face far away from the second surface forms a mounting end face, the mounting end face is parallel to the second surface, the mounting end face at least covers the projection area of the groove portion on the second surface, and a pole post hole communicated with the groove portion penetrates through the mounting end face.
In some embodiments, a thickness of the cover sheet body between the first surface and the second surface is smaller than a groove depth of the groove portion.
In some embodiments, the groove depth of the groove part is 0.01-4.3 mm.
In some embodiments, the perpendicular distance between the mounting end face and the second surface is 0.01-3 mm.
In some embodiments, the distance between the mounting end surface and the bottom of the groove portion is 0.7-3 mm.
In some embodiments, a space is left between the circumferential edge of the pole hole and the circumferential inner wall of the groove portion.
In a second aspect, a secondary battery is provided.
A secondary battery, comprising:
as described above with respect to the secondary battery top-lid sheet,
the battery cell body is provided with a mounting groove for the matching placement of the protruding part;
the pole column is connected with the battery cell body and extends into the groove part through the pole column hole;
the upper insulating part is arranged between the inner wall of the groove part and the pole and at least partially positioned in the groove part, the end surface of the top end of the upper insulating part is lower than the end surface of the top end of the pole, and a pole shoulder area is formed on the periphery of the end part of the pole;
the top end face of the pole and the top end face of the upper insulating part are both lower than the first surface, or,
the top end surface of the pole and the top end surface of the upper insulating part are both higher than the first surface, or,
the top end face of the pole is higher than the first surface, and the top end face of the upper insulating part is lower than the first surface.
In some embodiments, the top end surface of the upper insulating member is higher than the first surface by a distance of-1 to 1.5mm, and the top end surface of the pole is higher than the first surface by a distance of-0.5 to 2.5 mm.
In some embodiments, the post includes a lower post and an upper post, the lower post is disposed in the mounting groove, the upper post is at least partially disposed in the groove, and the bottom end of the upper post is in contact connection with the top end of the lower post through the post hole.
In some embodiments, a lower insulating member is further disposed between the secondary battery top cover sheet and the battery core.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a secondary battery's top cap piece and secondary battery, because the concave part and the bellying that set up on cover plate body first surface and the second surface, when making the top cap piece use on secondary battery, utmost point post will be whole or partly arrange in the concave part after passing the terminal hole of mounting end face, can set up required insulating part or sealing member in the concave part this moment, need not to make utmost point post stretch out the excessive length of top cap piece, simultaneously for the space between top cap piece and the utmost point post tip among the prior art is wasted, shift this part space to the opposite side of top cap piece in this application, the week side space of bellying promptly, and then this part space can be used to the volume expansion of electric core or set up relevant part, make this part space obtain effective utilization, improve secondary battery's space utilization.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a secondary battery top cover;
fig. 2 is a partial structural view of a secondary battery;
fig. 3 is a schematic view of a part of the structure of a secondary battery provided in a first type of embodiment;
fig. 4 is a schematic view of a part of the structure of a secondary battery provided in a second embodiment;
fig. 5 is a schematic view of a part of the structure of a secondary battery provided in a third embodiment.
In the figure:
1. a cover plate body; 10. a first surface; 11. a second surface;
2. a groove part; 20. a patch;
3. a boss portion; 30. mounting an end face; 31. a pole hole;
4. a cell body; 40. mounting grooves;
50. a lower pole column; 51. arranging a pole;
60. an upper insulating member; 61. a lower insulating member; 62. an upper seal member; 63. a lower seal member; 7. the column shoulder area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a secondary battery top cover plate and a secondary battery, which can solve the problem of serious space waste around a pole column in the related art.
In a first aspect, embodiments of the present application provide a secondary battery top cover sheet.
Referring to fig. 1, a secondary battery top cap sheet includes:
the cover plate comprises a cover plate body 1, a first cover plate and a second cover plate, wherein a first surface 10 and a second surface 11 are respectively arranged on two opposite sides of the cover plate body 1;
a groove portion 2 provided on the first surface 10 and extending from the first surface 10 to the second surface 11;
the protruding portion 3 is disposed on the second surface 11 and extends to a side away from the first surface 10, an end surface of the protruding portion away from the second surface 11 forms a mounting end surface 30, the mounting end surface 30 is parallel to the second surface 11, the mounting end surface 30 at least covers a projection area of the groove portion 2 on the second surface 11, and a pole hole 31 communicating with the groove portion 2 is formed through the mounting end surface 30.
With the arrangement, the embodiment of the application provides a top cover plate of a secondary battery and a secondary battery, because the concave parts 2 and the convex parts 3 are arranged on the first surface 10 and the second surface 11 of the cover plate body 1, when the top cover plate is used on the secondary battery, after the pole post passes through the pole post hole 31 of the installation end surface 30, the whole or part of the pole post is arranged in the groove part 2, and at the moment, the needed insulating part or sealing part can be arranged on the peripheral side of the pole post in the groove part 2 without extending the pole post out of the top cover plate by too much length, meanwhile, compared with the condition that the space between the top cover plate and the end part of the pole is wasted in the prior art, the space is transferred to the other side of the top cover plate in the application, namely, the space around the protruding part 3, and then the partial space can be used for volume expansion of the battery core or for arranging related parts, so that the partial space is effectively utilized, and the space utilization rate of the secondary battery is improved.
In some preferred embodiments, the thickness of the cap plate body 1 between the first surface 10 and the second surface 11 is less than the groove depth H1 of the groove part 2.
Wherein, in the process of extending from the first surface 10 to the second surface 11, the groove bottom of the groove portion 2 will cross the second surface 11 and extend into the protruding portion 3. Furthermore, the groove portion 2 is realized to have a large depth, so that the height between the top cover plate first surface 10 and the top end of the pole is small, and the space around the pole can be fully utilized.
Optionally, the groove depth H1 of the groove part 2 is 0.01-4.3 mm.
Wherein, the groove depth H1 of the groove part 2 is 1.3-3.3 mm in some preferred embodiments.
Further, the vertical distance H2 between the installation end face 30 and the second surface 11 is 0.01-3 mm.
Wherein the vertical distance H2 between the mounting end face 30 and the second surface 11, namely the height of the convex part 3 is 0.1-2 mm in some preferred embodiments.
In some preferred embodiments, the distance between the mounting end surface 30 and the groove bottom of the groove portion 2, i.e. the thickness T of the protruding portion 3 at the mounting end surface 30, is 0.7-3 mm.
Optionally, a gap is left between the circumferential edge of the pole post hole 31 and the circumferential inner wall of the groove portion 2.
Wherein, utmost point post hole 31 week is followed and is formed the even annular interval of width between the 2 circumference inner walls of concave part to make the utmost point post that passes utmost point post hole 31 can with the 2 circumference inner walls of concave part between keep equidistant setting, so that the secondary battery top cap piece that this application embodiment provided sets up the insulating part between utmost point post and the 2 inner walls of concave part when using.
In a second aspect, embodiments of the present application provide a secondary battery.
Referring to fig. 2, a secondary battery includes:
as described above with respect to the secondary battery top-lid sheet,
the battery cell body 4 is provided with a mounting groove 40 for the convex part 3 to be placed in a matching way;
the pole column is connected with the battery cell body and extends into the groove part through the pole column hole;
the upper insulating part is arranged between the inner wall of the groove part 2 and the pole and at least partially positioned in the groove part 2, the end surface of the top end of the upper insulating part is lower than the end surface of the top end of the pole, and a pole shoulder area 7 is formed on the periphery of the end part of the pole;
the top end face of the pole and the top end face of the upper insulator 60 are both lower than the first surface 10, or,
the top end surface of the pole and the top end surface of the upper insulating member 60 are both higher than the first surface 10, or,
the top end face of the pole is higher than the first surface 10, and the top end face of the upper insulating member 60 is lower than the first surface 10.
The top end face of the pole and the top end face of the upper insulating member 60 are specifically end faces of the pole and the upper insulating member away from the bottom face of the groove portion 2.
In some preferred embodiments, the top end surface of the upper insulator 60 is higher than the first surface 10 by a distance H4 of-1 to 1.5mm, and the top end surface of the pole is higher than the first surface 10 by a distance H3 of-0.5 to 2.5 mm.
In this embodiment, the distance H3 that the end surface of the top end of the upper pole 51 is higher than the first surface 10 is specifically 2mm in this embodiment.
Referring to fig. 4, further, the poles include a lower pole 50 and an upper pole 51, the lower pole 50 is disposed in the mounting groove 40, the upper pole 51 is at least partially disposed in the groove portion 2, and a bottom end of the upper pole 51 is in contact connection with a top end of the lower pole 50 through the pole hole 31.
Further, a lower insulating part 61 is arranged between the secondary battery top cover plate and the battery core.
The upper insulator 60 and the lower insulator 61 are made of plastic material. The adapter sheet 20 is arranged in the mounting groove 40 of the battery cell body 4, and the bottom end of the lower pole 50 is in contact with the adapter sheet 20 to realize connection with the battery cell; the top end of the lower pole 50 extends into the pole hole 31 of the boss portion 3 and is further in contact connection with the bottom end of the upper pole 51 placed in the groove portion 2.
Referring to fig. 3, the lower insulating member 61 is configured to be adapted to the second surface 11 and the protruding portion 3 in this embodiment, so as to isolate the top cover from the cell body 4 and the lower terminal 50, and avoid the top cover from contacting the cell body 4 or the lower terminal 50. In addition, in order to further ensure the safety of the upper pole 51 and the lower pole 50 during use, an upper sealing member 62 and a lower sealing member 63 are respectively arranged on two sides of the peripheral edge of the pole hole 31, so that the upper pole 51, the lower pole 50 and the peripheral edge of the pole hole 31 are isolated and sealed.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A secondary battery top cover sheet, characterized in that it comprises:
the cover plate comprises a cover plate body (1), wherein a first surface (10) and a second surface (11) are respectively arranged on two opposite sides of the cover plate body;
a recessed portion (2) provided in the first surface (10) and extending from the first surface (10) to the second surface (11);
the protruding portion (3) is arranged on the second surface (11) and extends to the side far away from the first surface (10), the end face far away from the second surface (11) forms a mounting end face (30), the mounting end face (30) is parallel to the second surface (11), the mounting end face (30) at least covers the projection area of the groove portion (2) on the second surface (11), and a pole post hole (31) communicated with the groove portion (2) penetrates through the mounting end face (30).
2. The secondary battery top cover sheet according to claim 1, wherein a thickness of the cover sheet body (1) between the first surface (10) and the second surface (11) is smaller than a groove depth of the groove portion (2).
3. The secondary battery top-cover sheet according to claim 2, wherein the groove depth of the groove part (2) is 0.01 to 4.3 mm.
4. The secondary battery top cover sheet according to claim 3, wherein the perpendicular distance between the installation end surface (30) and the second surface (11) is 0.01 to 3 mm.
5. The secondary battery top-cover sheet according to claim 1, wherein the thickness between the mounting end face (30) and the groove bottom of the groove portion (2) is 0.7 to 3 mm.
6. The secondary battery top-cover sheet according to claim 1, wherein a space is left between the peripheral edge of the pole hole (31) and the peripheral inner wall of the groove portion (2).
7. A secondary battery, characterized in that it comprises:
the secondary battery top-cover sheet as claimed in any one of claims 1 to 6,
the battery cell body (4) is provided with a mounting groove (40) for the lug boss (3) to be placed in a matching way;
the pole is connected with the battery cell body (4) and extends into the groove part (2) through the pole hole (31);
the upper insulating piece (60) is arranged between the inner wall of the groove part (2) and the pole, at least part of the upper insulating piece is positioned in the groove part (2), the end surface of the top end of the upper insulating piece is lower than that of the top end of the pole, and a pole shoulder area (7) is formed on the periphery of the end part of the pole;
the top end face of the pole and the top end face of the upper insulating part (60) are both lower than the first surface (10), or,
the top end surface of the pole and the top end surface of the upper insulating part (60) are both higher than the first surface (10), or,
the top end face of the pole is higher than the first surface (10), and the top end face of the upper insulating part (60) is lower than the first surface (10).
8. The secondary battery according to claim 7, characterized in that: the distance between the top end face of the upper insulating part (60) and the first surface (10) is-1-1.5 mm, and the distance between the top end face of the pole and the first surface (10) is-0.5-2.5 mm.
9. The secondary battery according to claim 7, characterized in that: the utmost point post includes utmost point post (50) and last utmost point post (51) down, utmost point post (50) are located down in mounting groove (40), it locates to go up utmost point post (51) at least part in recess portion (2), the bottom of going up utmost point post (51) with the top of utmost point post (50) is passed through utmost point post hole (31) contact is connected down.
10. The secondary battery according to claim 7, characterized in that: and a lower insulating part (61) is also arranged between the secondary battery top cover plate and the battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221098202.0U CN217507492U (en) | 2022-04-29 | 2022-04-29 | Secondary battery top cover plate and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221098202.0U CN217507492U (en) | 2022-04-29 | 2022-04-29 | Secondary battery top cover plate and secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217507492U true CN217507492U (en) | 2022-09-27 |
Family
ID=83352743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221098202.0U Active CN217507492U (en) | 2022-04-29 | 2022-04-29 | Secondary battery top cover plate and secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217507492U (en) |
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2022
- 2022-04-29 CN CN202221098202.0U patent/CN217507492U/en active Active
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