CN214706172U

CN214706172U - Battery connecting piece assembly and battery core

Info

Publication number: CN214706172U
Application number: CN202120666061.7U
Authority: CN
Inventors: 姬嘉帅; 宁亚军
Original assignee: Svolt Energy Technology Wuxi Co Ltd
Current assignee: Svolt Energy Technology Wuxi Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-12
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to a connection piece provides a battery connection piece subassembly and electric core. Battery connection piece subassembly, including connection piece (1) and insulating piece (2) of setting in connection piece (1) one side, be provided with connection piece weeping hole (11) on connection piece (1), be provided with on insulating piece (2) with the insulating piece weeping hole (21) that connection piece weeping hole (11) correspond the setting, the sectional area of connection piece weeping hole (11) is less than the sectional area of insulating piece weeping hole (21). Electric core, be provided with foretell battery connection piece subassembly, electric core utmost point group, casing and apron. The utility model provides a battery connecting piece subassembly can improve the notes liquid efficiency and the infiltration rate of electric core under the condition that prevents the short circuit of electric core utmost point group.

Description

Battery connecting piece assembly and battery core

Technical Field

The utility model relates to a connection piece, in particular to battery connection piece subassembly. The utility model discloses still relate to the electric core including this battery connection piece subassembly.

Background

In the current cell design, the wettability of the battery is increasingly poor along with the increase of the size of a cell pole group, and the liquid injection of the battery is difficult.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a battery connection piece subassembly can improve annotating liquid efficiency and infiltration rate of electric core under the condition that prevents the short circuit of electric core utmost point group.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a battery connection piece subassembly, includes connection piece and the insulating piece of setting in connection piece one side, be provided with connection piece weeping hole on the connection piece, be provided with on the insulating piece with the insulating piece weeping hole that connection piece weeping hole corresponds the setting leaks the hole, the sectional area in connection piece weeping hole is less than the sectional area in insulating piece weeping hole.

Furthermore, the connecting sheet comprises a connecting sheet main body and a connecting sheet extending portion connected with the connecting sheet main body, the connecting sheet weeping hole is formed in the connecting sheet main body, and an insulating sheet connecting hole suitable for the connecting sheet extending portion to penetrate through is formed in the insulating sheet.

Further, the tail end of the connecting sheet extension is formed with a groove for facilitating welding.

Furthermore, the insulating sheet is provided with a welding hole corresponding to the groove.

Further, the connecting piece is provided with a welding plane and a raised reinforcing structure.

Further, the reinforcing structure includes at least one reinforcing rib, and the at least one reinforcing rib is provided to extend from the center of the connecting piece to the outside.

Furthermore, the reinforcing structure further comprises a reinforcing protrusion, the reinforcing protrusion is arranged in the central area of the connecting sheet, and one end of at least one reinforcing rib is connected with the reinforcing protrusion.

Furthermore, the connecting sheet weeping holes are positioned on one side or two sides of the reinforcing rib and have intervals with the reinforcing rib.

Furthermore, the connecting sheet weeping hole is a long strip-shaped through hole.

Compared with the prior art, the battery connecting piece assembly of the utility model has the following advantages:

battery connection piece, through with the insulating piece setting in one side of connection piece, can prevent that the both ends of casing and electric core utmost point group from switching on, cause electric core short circuit to influence the security performance of electric core. Through set up connection piece weeping hole on the battery connection piece, be provided with the insulating piece weeping hole on the insulating piece, and be less than the sectional area in insulating piece weeping hole with the sectional area in connection piece weeping hole, can make electrolyte faster contact with electric core utmost point group, improve the notes liquid efficiency of electrolyte, also can improve the infiltration rate of electric core simultaneously.

Another object of the present invention is to provide an electrical core, which can improve the liquid injection efficiency and infiltration rate of the electrical core under the condition of preventing the short circuit of the electrical core pole group.

an electric core is provided with an electric core pole group, a shell, a connecting sheet and the battery connecting sheet component.

The advantages of the battery core and the battery connecting piece assembly are the same compared with the prior art, and are not described in detail herein.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is an exploded view of a battery connecting sheet according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connecting sheet according to an embodiment of the present invention;

FIG. 3 is a second schematic structural view of a connecting sheet according to an embodiment of the present invention;

FIG. 4 is a schematic view of an insulating sheet according to an embodiment of the present invention;

FIG. 5 is a second schematic structural view of an insulation sheet according to an embodiment of the present invention;

fig. 6 is an exploded view of a structure of a battery cell according to an embodiment of the present invention.

Description of reference numerals:

1 connecting sheet 2 insulating sheet

3 cover plate 4 negative pole connecting sheet

5 casing

11 connecting piece weeping hole 12 connecting piece main body

13 connecting piece extension 14 reinforcing structure

15 plane of welding

21 insulating sheet weeping hole 22 welding hole

23 insulating sheet connecting hole

131 groove

141 reinforcing ribs 142 reinforcing protrusions

Detailed Description

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

In addition, the terms "inside", "outside", "top", "bottom", and the like referred to in the embodiments of the present invention indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, the cell-based case 5, "top" refers to the top of the case 5, and correspondingly, "bottom" refers to the bottom of the case 5, "inside" refers to the inside of the case 5, and "outside" refers to the outside of the case 5. The terminology is based on the orientations and positional relationships illustrated in the drawings and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

The utility model discloses a basic embodiment provides a battery connecting piece subassembly, as shown in fig. 1, including connection piece 1 and the insulating piece 2 of setting in connection piece 1 one side, be provided with connection piece weeping hole 11 on connection piece 1, be provided with the insulating piece weeping hole 21 that corresponds the setting with connection piece weeping hole 11 on insulating piece 2, the sectional area of connection piece weeping hole 11 is less than the sectional area of insulating piece weeping hole 21.

According to the utility model discloses, insulating piece 2 can the lug connection in one side of insulating piece 2, also can the indirect connection in one side of insulating piece 2. Connection piece weeping hole 11 and insulating piece weeping hole 21 can be the through-hole of arbitrary shape, can be circular port, quad slit, bar hole, arc hole, waist shape hole or other irregularly shaped's through-hole, and preferably, for the design of convenience, connection piece weeping hole 11 and insulating piece weeping hole 21 are the through-hole of regular shape. The size of the insulating sheet 2 is larger than that of the connecting sheet 1.

Preferably, in order to facilitate the leakage of the electrolyte, the connecting-piece leakage hole 11 and the insulating-piece leakage hole 21 are designed to have sectional areas that decrease from top to bottom in sequence. Specifically, when the connecting sheet weep hole 11 and the insulating sheet weep hole 21 are both circular holes, the diameters of the connecting sheet weep hole 11 and the insulating sheet weep hole 21 are both designed to be gradually reduced from top to bottom; when the connecting sheet weeping hole 11 and the insulating sheet weeping hole 21 are both square through holes, the side lengths of the connecting sheet weeping hole 11 and the insulating sheet weeping hole 21 are both designed to be gradually reduced from top to bottom.

Specifically, the battery tab assembly can be used as a positive tab assembly and can also be used as a negative tab assembly.

When the battery connecting piece assembly provided by the basic embodiment is used, the connecting piece 1 penetrates through the insulating sheet 2 to be connected with the cover plate 3, the other side of the connecting piece is connected with the battery cell pole group, and the battery cell pole group is arranged in a space formed by the cover plate 3 and the shell 5, so that electric energy generated by a battery cell can be transmitted to the outside through the cover plate 3.

The battery connecting piece assembly provided by the basic embodiment can prevent the two ends of the battery core pole group and the shell 5 from being conducted to cause the short circuit of the battery core in the connection process by arranging the insulating piece 2 at one side of the connecting piece 1, thereby influencing the safety performance of the battery core. Through set up connection piece weeping hole 11 on battery connection piece 1, be provided with insulating piece weeping hole 21 on insulating piece 2, and be less than the sectional area of insulating piece weeping hole 21 with the sectional area of connection piece weeping hole 11, can make electrolyte faster contact with electric core utmost point group, improve the notes liquid efficiency of electrolyte, also can improve the infiltration rate of electric core simultaneously.

Connection piece 1 can be any kind of connection piece disclosed in the prior art, in a specific embodiment of the utility model, as shown in fig. 1, fig. 2, fig. 3 and fig. 6, connection piece 1 includes connection piece main body 12 and connection piece extension 13 connected with connection piece main body 12, and connection piece weeping hole 11 sets up on connection piece main body 12, is provided with the insulating piece connecting hole 23 that is suitable for connection piece extension 13 to pass on insulating piece 2.

Specifically, the tail end of the connecting sheet extension part 13 which is bent twice can be arranged in the central area of the connecting sheet main body 12, in the connecting process, the connecting sheet extension part 13 penetrates through the insulating sheet 2 and is bent at the other side of the insulating sheet 2, the connecting sheet extension part 13 is connected with the cover plate 3, the connecting sheet main body 12 is connected with the battery cell pole group, the insulating sheet 2 can be fixed through the design, the electric conduction between the cover plate 3 and the shell 5 can be effectively prevented, and the normal use of the battery is ensured.

In order to facilitate the welding of the connecting sheet 1 and the cell pole group, in a specific embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, a groove 131 for facilitating the welding is formed at the tail end of the connecting sheet extending portion 13. The groove 131 is arranged to further facilitate welding between the connecting sheet 1 and the cell pole group.

As a specific embodiment of the present invention, as shown in fig. 1, 2 and 3, the central region of the connecting sheet main body 12 is provided with a connecting sheet positioning hole, and after the connecting sheet extending portion 13 is bent, the groove 131 is located above the connecting sheet positioning hole.

The central region is where the geometric center of the tab body 12 is located.

In order to further facilitate the welding between the connecting sheet 1 and the cell electrode group, in a specific embodiment of the present invention, as shown in fig. 1, 4 and 5, the insulating sheet 2 is provided with a welding hole 22 corresponding to the groove 131. That is, the position and size of the welding hole 22 correspond to the groove 131, and the groove 131 is suitable for passing through the welding hole 22 to be connected with the cell pole group during welding.

In order to increase the structural strength of the web 1, in one embodiment of the invention, as shown in fig. 1, 2 and 3, the web 1 has a welding plane 15 and a raised reinforcing structure 14. The structural strength of the connecting sheet 1 can be further improved, so that the possibility of deformation or damage of the connecting sheet 1 in the connecting process is reduced, and the electrical performance of the battery cell is ensured.

Preferably, reinforcing structure 14 is provided in plurality and evenly distributed on connecting sheet 1, so as to improve the overall structural strength of connecting sheet 1, and further enable connecting sheet 1 to be designed in a larger size.

The reinforcing structure 14 may be any structure capable of realizing a structure reinforcing effect in the prior art, and in an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the reinforcing structure 14 includes at least one reinforcing rib 141, and the at least one reinforcing rib 141 is configured to extend from the center of the connecting sheet 1 to the outside. By providing at least one rib 141 extending outward from the center of the connecting piece 1, the stability of the structure of the connecting piece 1 from the center to the periphery can be ensured without hindering the opening of the connecting piece positioning hole.

Specifically, if the connecting piece 1 includes the connecting piece main body 12 and the connecting piece extension 13, the center herein refers to the geometric center of the connecting piece main body 12.

More specifically, the connection piece 1 may be provided according to the shape of the cell pole group, and specifically, the connection piece 1 is matched with the cell pole group. When the connecting piece is applied to the prismatic battery cell pole group, the connecting piece 1 is set to be in a shape consistent with the bottom surface of the prismatic battery cell pole group; when applied to a cylindrical cell pole group, the connection piece 1 is provided in a circular shape, and at least one reinforcing rib 141 is provided to extend outward from the center of the connection piece 1 in the radial direction. That is, at least one rib 141 is provided to extend in the radial direction of the coupling piece 1. When the reinforcing rib 141 is provided in plurality, so that the entire surface of the connecting piece 1 can perform the strength increasing action via the reinforcing rib 141 to some extent. Specifically, as shown in fig. 2, there are 3 reinforcing ribs 141, and three reinforcing ribs 141 can form a "Y" shaped structure or a similar "Y" shaped structure on the surface of the connecting sheet 1.

In order to further enhance the structural stability of the connecting piece, in an embodiment of the present invention, as shown in fig. 2, the reinforcing structure 14 further includes a reinforcing protrusion 142, the reinforcing protrusion 142 is disposed in the central region of the connecting piece 1, and one end of at least one reinforcing rib 141 is connected to the reinforcing protrusion 142. Set up the connection piece locating hole on strengthening protruding 142, can improve the structural stability of connection piece locating hole department, moreover, connect a plurality of strengthening ribs 141 through strengthening protruding 142, can make strengthening rib 141's additional strengthening can be continuous to further improve the structural strength of whole connection piece 1.

The utility model discloses in, do not do strict demand to the form of connection piece weeping hole 11 on connection piece 1, in order to satisfy electric automobile platform ization demand, the battery size needs to be to thicker, longer direction development, for this reason, connection piece 1's size also need carry out corresponding increase according to the battery size, the area that can open connection piece weeping hole 11 also increases thereupon, in concrete application, connection piece weeping hole 11's shape, the size can be based on connection piece 1's overall dimension satisfying rigidity, under the prerequisite of intensity, carry out reasonable design. For example, the tab weep hole 11 may be a through hole provided in the tab 1 in a region other than the rib 141. Preferably, the connecting-piece weep holes 11 are located on one side or both sides of the rib 141 with a space from the rib 141. More preferably, as shown in fig. 1, 2 and 3, the connecting-piece weep holes 11 are located on both sides of the reinforcing rib 141 with a space provided therebetween with respect to the reinforcing rib 141. The size of the interval may be determined by those skilled in the art as the case may be.

As the utility model discloses a preferred embodiment of well connection piece weeping hole 11, connection piece weeping hole 11 set up to rectangular shape through-hole, and electrolyte just can contact with utmost point group through rectangular shape through-hole sooner to can follow electric core and ooze in extremely organizing, can promote electrolyte and annotate liquid efficiency, promote the infiltration of utmost point group electrolyte simultaneously.

Preferably, the connecting piece weep hole 11 is provided as an elongated through hole extending in the length direction of the rib 141 corresponding to the connecting piece weep hole 11. The liquid injection efficiency of the electrolyte can be improved while the structural strength of the connection 1 can be ensured.

In a relatively preferred embodiment of the present invention, as shown in fig. 1 to 6, there is provided a battery connecting tab assembly including a connecting tab 1 and an insulating sheet 2 disposed at one side of the connecting tab 1; the connecting sheet 1 comprises a connecting sheet main body 12 and a connecting sheet extending portion 13 connected with the connecting sheet main body 12, the connecting sheet main body 12 is circular-like, the connecting sheet main body 12 is provided with a welding plane 15 and a raised reinforcing structure 14, a connecting sheet leakage hole 11 is formed in the connecting sheet main body 12, a groove 131 for facilitating welding is formed in the tail end of the connecting sheet extending portion 13, a connecting sheet positioning hole is formed in the central area of the connecting sheet main body 12, a welding hole 22 suitable for clamping the groove 131 is formed in the insulating sheet 2, the connecting sheet positioning hole and the welding hole 22 are correspondingly arranged, and after the connecting sheet extending portion 13 is bent, the groove 131 is located above the connecting sheet positioning hole; the insulating sheet 2 is provided with an insulating sheet leakage hole 21 which is arranged corresponding to the connecting sheet leakage hole 11, and the sectional area of the connecting sheet leakage hole 11 is smaller than that of the insulating sheet leakage hole 21; the reinforcing structure 14 includes a reinforcing protrusion 142 and at least one reinforcing rib 141, the reinforcing protrusion 142 is located at the center of the connecting piece main body 12, and one end of the at least one reinforcing rib 141 is connected to the reinforcing protrusion 142 and extends outward in the radial direction of the connecting piece main body 12; the connecting sheet weep holes 11 are located on two sides of the reinforcing rib 141, and a space is arranged between the connecting sheet weep holes 11 and the reinforcing rib 141, and the connecting sheet weep holes 11 are long strip-shaped through holes extending along the length direction of the reinforcing rib 141 corresponding to the connecting sheet weep holes 11.

When the battery connecting piece assembly provided by the above relatively preferred embodiment is used, the connecting piece extending portion 13 on the connecting piece 1 is folded and placed above the insulating piece 2 through the welding hole 22 of the insulating piece 2, the groove 131 is connected with the cell pole group through the welding hole 22 of the insulating piece 2 and the connecting piece positioning hole of the connecting piece main body 12, the other side of the connecting piece 1 is connected with the cover plate 3, and the cell pole group is placed in the space formed by the cover plate 3 and the shell 5, so that electric energy generated by the cell can be transmitted to the outside through the cover plate 3 and the shell 5.

The above-mentioned battery connection piece assembly that relative preferred embodiment provided can separate one of them one end of battery core pole group and casing 5 through setting up insulating piece 2 in one side of connection piece 1, prevents that the both ends of battery core pole group and casing 5 circuit from switching on, causes the electric core short circuit to influence the security performance of electric core. The structural strength of the connecting piece 1 can be improved by the reinforcing structure 14 on the connecting piece 1. Through being provided with connection piece weeping hole 11 on connection piece main part 12, be provided with insulating piece weeping hole 21 on insulating piece 2, and correspond connection piece weeping hole 11 and insulating piece weeping hole 21 and set up, be less than the sectional area of insulating piece weeping hole 21 with the sectional area of connection piece weeping hole 11, pour into electrolyte into the battery more conveniently, can make electrolyte faster contact with electric core utmost point group, improve the notes liquid efficiency of electrolyte, also can improve the infiltration rate of electric core simultaneously.

In an embodiment of the battery cell of the present invention, the battery cell includes a battery connecting piece assembly provided in any one of the above embodiments of the battery connecting piece assembly, and further includes a battery cell pole group, a housing 5 and a cover plate 3.

Specifically, the cover plate 3 and the case 5 can form a closed space, and the battery tab assembly can be used as a positive electrode tab assembly or a negative electrode tab assembly.

When the battery connecting piece assembly is used as the positive connecting piece assembly, in order to ensure the integrity of the battery core, a negative connecting piece 4 is required to be added, referring to fig. 6, the negative connecting piece 4, the battery core pole group and the battery connecting piece assembly are sequentially arranged in the closed space wrapped by the cover plate 3 and the shell 5 from bottom to top, and can be electrically communicated with the lower surfaces of the cover plate 3 and the shell 5.

When the battery connecting piece is used as a negative connecting piece assembly, a positive connecting piece is required to be added, and the battery connecting piece assembly, the battery cell pole group and the positive connecting piece are sequentially arranged in the closed space wrapped by the cover plate 3 and the shell 5 from bottom to top and can be electrically communicated with the lower surfaces of the cover plate 3 and the shell 5.

The battery core has all the advantages of the battery connecting piece assembly, and the description is omitted.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery connecting piece subassembly, its characterized in that includes connection piece (1) and insulating piece (2) of setting in connection piece (1) one side, be provided with connection piece weeping hole (11) on connection piece (1), be provided with on insulating piece (2) with insulating piece weeping hole (21) that connection piece weeping hole (11) correspond the setting, the sectional area of connection piece weeping hole (11) is less than the sectional area of insulating piece weeping hole (21).

2. The battery tab assembly of claim 1 wherein the tab (1) comprises a tab body (12) and a tab extension (13) connected to the tab body (12), the tab weep hole (11) being provided on the tab body (12), the insulating sheet (2) being provided with an insulating sheet connection hole (23) adapted for the tab extension (13) to pass through.

3. The battery tab assembly of claim 2 wherein the tail end of the tab extension (13) is formed with a groove (131) for facilitating welding.

4. The battery tab assembly of claim 3 wherein the insulating sheet (2) is provided with welding holes (22) corresponding to the grooves (131).

5. A battery tab assembly according to any of claims 1-4, wherein the tab (1) has a welding plane (15) and a raised reinforcement structure (14).

6. The battery tab assembly of claim 5 wherein the reinforcement structure (14) comprises at least one reinforcement rib (141) and at least one reinforcement rib (141) is provided to extend from the center of the tab (1) to the outside.

7. The battery tab assembly of claim 6 wherein the reinforcement structure (14) further comprises a reinforcement protrusion (142), the reinforcement protrusion (142) being disposed at a central region of the tab (1), and one end of at least one of the reinforcing ribs (141) being connected to the reinforcement protrusion (142).

8. The battery tab assembly of claim 6 or 7 wherein the tab weep hole (11) is located on one or both sides of the reinforcement rib (141) and is spaced from the reinforcement rib (141).

9. A battery tab assembly according to any of claims 1-4, wherein the tab weep hole (11) is provided as an elongated through hole.

10. A battery cell, characterized in that a cell pole group, a housing (5), a cover plate (3) and a battery tab assembly according to any of claims 1-9 are provided.