CN216213941U

CN216213941U - Tab support and single battery

Info

Publication number: CN216213941U
Application number: CN202122384565.2U
Authority: CN
Inventors: 张统; 杨伟; 胡明江
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-05
Anticipated expiration: 2031-09-29

Abstract

The utility model relates to an energy storage device technical field discloses a utmost point ear support and battery cell, utmost point ear support includes first support and second support, can assemble from utmost point ear width direction's both sides, and the connection is realized through first connecting portion and second connecting portion to the space of first body and second body along utmost point ear width direction of make full use of, adopts split type first support and second support assembly of can being convenient for, reduces the risk of damaging utmost point ear to improve assembly efficiency. The tab groove formed by encircling the first through groove and the second through groove can accommodate tabs, so that orderly collection of the tabs is realized, and the tab support can effectively block tab insertion, thereby avoiding the problem that the battery fails due to internal short circuit of the battery. The single battery with the lug support also has the advantages.

Description

Tab support and single battery

Technical Field

The utility model relates to the technical field of energy storage devices, in particular to a tab support and a single battery.

Background

The typical single battery comprises a top cover, a connecting sheet, a naked battery cell and a shell, and during assembly, firstly, a lug in the naked battery cell needs to be welded with the connecting sheet; secondly, welding the lug and the connecting sheet which are welded together with the top cover; finally, the top cover, the connecting sheet and the naked cell which are welded together are welded on the shell, so that the assembly is completed. When naked electric core and connection piece welding, the utmost point ear in the naked electric core need have certain length just can satisfy welding process, and when top cap and aluminum hull welding, longer utmost point ear easily forms utmost point ear redundancy, causes utmost point ear interpolation risk, easily causes the inside short circuit of battery to lead to the battery inefficacy. In the correlation technique, set up the support between top cap and naked electric core body, utmost point ear passes the support, and from this, the support can be used to insulating naked electric core body and utmost point ear, can satisfy utmost point ear and connection piece welding process's length requirement, can effectively avoid the inside short circuit of battery again, but in the present technique, because the internal structure restriction of battery cell, the assembly degree of difficulty of support is great, and has the problem of damaging utmost point ear, influences assembly efficiency.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a tab support assembly for insulating naked electric core body and utmost point ear to can receive utmost point ear betterly, improve assembly efficiency.

The application also provides a single battery comprising the tab support.

The utility model provides a tab support of first aspect embodiment, including first support and the second support that sets up along the width direction of utmost point ear, wherein:

the first support comprises a first body and a first connecting part, a first through groove for the lug to pass through is formed in the first body, a first end face is arranged at one end, facing the second support, of the first body, the first through groove extends to penetrate through the first end face along the width direction of the lug and form a first through hole, and the first connecting part is arranged on the first end face and is staggered with the first through hole;

the second support comprises a second body and a second connecting portion, a second through groove for the pole lug to pass through is formed in the second body, the second body faces one end of the first support and is provided with a second end face, the second through groove extends to penetrate through the second end face along the width direction of the pole lug and forms a second through hole, the second connecting portion is arranged on the second end face and is staggered with the second through hole, the second connecting portion can be detachably connected with the first connecting portion, and the first through groove and the second through groove are encircled to form a pole lug groove for the pole lug to pass through. The tab support of the embodiment of the first aspect of the application has at least the following beneficial effects: adopt split type first support and second support, can assemble from utmost point ear width direction's both sides, the space of utmost point ear width direction is followed to make full use of first body and second body, realizes connecting through first connecting portion and second connecting portion, and split type structure is convenient for assemble, can improve assembly efficiency, reduces the risk of damaging utmost point ear. The tab groove formed by encircling the first through groove and the second through groove can accommodate tabs, so that orderly collection of the tabs is realized, and the tab support can effectively block tab insertion, thereby avoiding the problem that the battery fails due to internal short circuit of the battery.

According to the utmost point ear support of some embodiments of this application, first support still includes first location portion, the second support still is provided with second location portion, first location portion set up in first terminal surface, and with first connecting portion with the position of first through-hole staggers each other, second location portion set up in the second terminal surface and with second connecting portion with the position of second through-hole staggers each other, second location portion can with the cooperation of first location portion, in order to restrict the relative movement direction of first connecting portion and second connecting portion is along the width direction of utmost point ear.

According to the utmost point ear support of some embodiments of this application, first location portion includes certainly first terminal surface is along the convex reference column of the width direction of utmost point ear, second location portion includes the locating hole, the width direction of utmost point ear is extended along the axis of reference column, the locating hole with the reference column can coaxial grafting.

According to the tab support of some embodiments of the application, the outer wall of the positioning column is provided with a rotation stopping column, the inner wall of the positioning hole is provided with a rotation stopping groove, and the rotation stopping column can enter the rotation stopping groove along the axial direction of the first positioning part; or the outer wall of the positioning column is provided with a rotation stopping groove, and the inner wall of the positioning hole is provided with a rotation stopping column; the rotation stopping column can enter the rotation stopping groove along the axial direction of the first positioning part.

According to the tab support of some embodiments of the present application, the first connecting portion protrudes from the first end surface in the width direction of the tab, the second connecting portion protrudes from the second end surface in the width direction of the tab, and the first positioning portion and the second positioning portion are configured to be capable of being inserted into each other before the first connecting portion is connected with the second connecting portion.

According to the tab support of some embodiments of the present application, the second connection portion is provided with a sub buckle, and the first connection portion is provided with a female buckle in fit connection with the sub buckle; or, be provided with sub-buckle on the first connecting portion, be provided with on the second connecting portion with the female buckle that the sub-buckle cooperation is connected.

According to the tab holder of some embodiments of the present application, the first holder includes a pair of the first positioning portions, and the first positioning portions are respectively located at both sides of the first through hole; the second end face is correspondingly provided with a pair of second positioning parts, and the second positioning parts are respectively positioned at two sides of the second through hole.

According to the tab holder of some embodiments of the present application, the first end surface is provided with a pair of the first connecting portions, and the first connecting portions are respectively located at two sides of the first through hole; the second end face is correspondingly provided with a pair of second connecting parts, and the second connecting parts are respectively positioned at two sides of the second through hole.

According to the tab support of some embodiments of the present application, the first body is further provided with a third connecting portion, the second body is further provided with a fourth connecting portion, and the third connecting portion and the fourth connecting portion are respectively used for being connected with the top cover.

The single battery of the embodiment of the second aspect of the present application includes:

the shell is internally provided with an inner cavity, and the shell is provided with an opening communicated with the inner cavity;

the naked electric core, the naked electric core includes naked electric core body and utmost point ear, naked electric core body hold in the inner chamber, the utmost point ear stretches out to the outside of casing from the opening;

a top cover connected to the housing and covering the opening;

and, the utmost point ear support of above-mentioned first aspect embodiment, utmost point ear support set up in naked electric core body with between the top cap, utmost point ear wears to locate in the utmost point ear groove, first support with the second support passes through first connecting portion with second connecting portion interconnect, and connect respectively in the top cap.

The single battery of the embodiment of the second aspect of the application has at least the following beneficial effects: the utmost point ear support sets up between naked electric core body and top cap, and first support and second support can be assembled from utmost point ear width direction's both sides, and utmost point ear support assembly is accomplished the back, and utmost point ear holds in the utmost point ear groove that first logical groove and second logical groove surround formation, realizes the orderly receipts of utmost point ear and restraints, and utmost point ear support can effectively block utmost point ear interpolation to avoid the inside short circuit of battery to lead to the problem of battery inefficacy, and split type structure can reduce the assembly degree of difficulty, reduces the risk of damage utmost point ear.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic perspective view of a tab holder according to an embodiment of the present application;

FIG. 2 is a schematic view of the assembly of the first bracket and the second bracket;

FIG. 3 is a schematic view of the first bracket and the second bracket after assembly;

fig. 4 is a cross-sectional view of the tab holder of fig. 1 taken along section a-a;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is a perspective view of the first bracket of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a perspective view of the second bracket of FIG. 1;

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

FIG. 10 is a partial schematic view of the second bracket of FIG. 9 taken along the axis of the pilot hole;

fig. 11 is a schematic perspective view of a single battery according to an embodiment of the present application;

fig. 12 is a schematic view showing an assembled state of a tab holder and a top cover in the embodiment shown in fig. 11;

FIG. 13 is an enlarged view of a portion of FIG. 12 at E;

fig. 14 is a partial structural view of the top cover in fig. 12.

Reference numerals:

the first bracket 100, the first positioning portion 110, the positioning post 111, the rotation stopping groove 112, the tapered head 113, the first connecting portion 120, the sub-clip 121, the first body 130, the first end surface 131, the first through groove 140, the first through hole 141, the third connecting portion 150, and the first card slot 151;

the second bracket 200, the second positioning portion 210, the positioning hole 211, the rotation stopping column 212, the protrusion structure 213, the second connecting portion 220, the female buckle 221, the second body 230, the second end surface 231, the second through groove 240, the second through hole 241, the fourth connecting portion 250, and the second clamping groove 251;

a housing 300, an opening 310;

a bare cell 400, a bare cell body 410, and a tab 420;

the top cover 500, the top cover plate 510, the lower plastic 520, the first connecting buckle 521, and the second connecting buckle 522.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, several means are one or more, and the above, below, within and the like are understood to include the present numbers. The description to first, second, etc. is only for the purpose of distinguishing technical features, and should not be interpreted as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic perspective view of a tab support according to an embodiment of the present application, fig. 2 is a schematic assembly view of a first support and a second support, arrows in fig. 2 indicate an assembly direction of the first support and the second support, fig. 3 is a schematic assembly view of the first support and the second support after the first support and the second support are assembled, referring to fig. 1 to fig. 3, a first aspect of the present application provides a tab support for insulating a bare cell body and a tab, and in the description of the present application, "tab" indicates a positive tab or a negative tab. Generally speaking, the utmost point ear of naked electric core is flat thin slice structure, and the length of utmost point ear represents the length that utmost point ear stretches out from naked electric core body, and the distance of utmost point ear perpendicular to length direction's both sides border is the width of utmost point ear. The utmost point ear support of this application embodiment includes first support 100 and the second support 200 that sets up along the width direction of utmost point ear, and this first support 100 and second support 200 can be assembled from utmost point ear width direction's both sides to the combination forms the utmost point ear groove 160 that is used for holding utmost point ear, realizes restrainting in order of utmost point ear, and utmost point ear support adopts split type first support 100 and second support 200 interconnect, can reduce the assembly degree of difficulty, reduces the risk of damaging utmost point ear.

Fig. 4 is a sectional view of the tab holder of fig. 1 taken along a section a-a, and fig. 5 is a partially enlarged view of fig. 4 taken along a section B, and referring to fig. 1 to 5, the first holder 100 includes a first body 130 and a first connection portion 120, and an end of the first body 130 facing the second holder 200 has a first end surface 131. The second bracket 200 includes a second body 230 and a second connection part 220, the second body 230 has a second end surface 231 toward one end of the first bracket 100, and the second connection part 220 is detachably connected to the first connection part 120. The first body 130 is provided with a first through groove 140 for the tab to pass through, and the first through groove 140 extends along the width direction of the tab and penetrates through the first end surface 131. The second bracket 200 is provided with a second through groove 240 for the tab to pass through, the second through groove 240 extends along the width direction of the tab and penetrates through the second end surface 231, and after the first bracket 100 and the second bracket 200 are assembled, the first through groove 140 and the second through groove 240 surround the tab groove 160 for the tab 420 to pass through. Therefore, the first support 100 and the second support 200 can be assembled from both sides of the width direction of the tab 420, and the connection is realized through the first connecting portion 120 and the second connecting portion 220, so that the split structure is convenient for assembly, and the risk of damaging the tab 420 can be reduced.

It should be noted that, naked electric core is less usually in the size of thickness direction, receives this restriction, and the utmost point ear support sets up connection structure in the thickness direction of naked electric core and has certain degree of difficulty. In the tab support of the embodiment of the application, the first connection portion 120 on the first support 100 and the second connection portion 220 on the second support 200 are both configured along the width direction of the tab 420, so that the space in the width direction can be fully utilized, and the assembly difficulty and the structural design difficulty are reduced while the connection requirement is met.

As described above, when the first end surface 131 is formed with the first through hole 141 at the position penetrated by the first through groove 140 and the second end surface 231 is formed with the second through hole 241 at the position penetrated by the second through groove 240, referring to fig. 2, the first bracket 100 and the second bracket 200 are assembled by moving in the direction facing each other from both side edges in the width direction of the tab 420, and the tab 420 enters the first through groove 140 from the first through hole 141 as the first bracket 100 moves; similarly, as the second bracket 200 moves, the tab 420 enters the second through-hole 240 from the second through-hole 241, so that the tab 420 is prevented from being damaged, and after the first bracket 100 and the second bracket 200 are connected by the first connecting portion 120 and the second connecting portion 220, the tab 420 is constrained in the tab groove 160 defined by the first through-groove 140 and the second through-groove 240.

Referring to fig. 2 to 5, the first bracket 100 further includes a first positioning portion 110, the second bracket 200 is further provided with a second positioning portion 210, the first positioning portion 110 is disposed on the first end surface 131 of the first body 130 and is staggered from the first connecting portion 120 and the first through groove 140, the second positioning portion 210 is disposed on the second end surface 231 of the second body 230 and corresponds to the first positioning portion 110, and the second positioning portion 210 can be matched with the first positioning portion 110 to limit the relative movement direction of the first connecting portion 120 and the second connecting portion 220 along the width direction of the tab, so that the connection between the second connecting portion 220 and the first connecting portion 120 can be guided, and the problem of damage or connection failure caused by dislocation is avoided.

Fig. 6 is a schematic perspective view of the first bracket 100 in fig. 1, fig. 7 is a schematic partial enlarged view at C in fig. 6, fig. 8 is a schematic perspective view of the second bracket 200 in fig. 1, and fig. 9 is a schematic partial enlarged view at D in fig. 8, referring to fig. 6 to 9, in a tab bracket according to some embodiments, the first positioning portion 110 on the first bracket 100 includes a positioning post 111 protruding from the first end surface 131 in a width direction of a tab, and the second positioning portion 210 includes a positioning hole 211, where the positioning post 111 and the positioning hole 211 can be fitted and inserted. In an embodiment, the positioning hole 211 may be disposed on the second end surface 231, or the second positioning portion 210 may also include a protruding structure 213 protruding from the second end surface 231, and the positioning hole 211 is disposed on one side of the protruding structure 213 facing the positioning post 111 for inserting the positioning post 111. The positioning of the first bracket 100 and the second bracket 200 during assembly is realized by adopting a plug-in mode, and the positioning device has the advantages of simple structure and reliable positioning.

In the above embodiment, the positioning column 111 and the positioning hole 211 may adopt a plugging manner in which a cylinder and a circular hole are matched, or a plugging manner in which a polygonal prism and a polygonal hole are matched with each other. The embodiment provides an inserting mode adopting matching of a cylinder and a circular hole, for example, referring to fig. 7 and 9, the positioning column 111 is cylindrical, the axis of the positioning column 111 extends along the width direction of the tab, the positioning hole 211 is circular hole-shaped, the positioning hole 211 is coaxially inserted into the positioning column 111, the positioning hole 211 and the positioning column 111 are matched to be inserted and positioned, so that the relative movement of the first support 100 and the second support 200 can be limited in the axis direction, the movement of the first support 100 and the second support 200 can be limited in the width direction along the tab, and the matching of the cylinder and the circular hole has the automatic centering effect, so that the positioning accuracy is ensured, and the inserting is convenient. The end of the positioning post 111 far from the first end surface 131 can be provided as a conical head 113, the outer diameter of the conical head 113 gradually decreases towards the direction far from the first end surface 131, and the outer peripheral surface of the conical head is a conical surface, so that when the conical head is inserted into the positioning hole 211, the conical surface can play a role in guiding and centering.

Referring to fig. 7 and 10, in the above embodiment, the outer wall of the positioning column 111 may be provided with the rotation stopping post 212, and the inner wall of the positioning hole 211 may be correspondingly provided with the rotation stopping slot 112, and the rotation stopping post 212 may enter the rotation stopping slot 112 along the axial direction of the positioning column 111; alternatively, the outer wall of the positioning column 111 is provided with a rotation stopping groove 112, and the inner wall of the positioning hole 211 is provided with a rotation stopping column 212. The detent post 212 can enter the detent groove 112 along the axial direction of the detent post 111. Therefore, the rotation stopping column 212 and the rotation stopping groove 112 can prevent the positioning column 111 and the positioning hole 211 from rotating relatively around the axis, so that when the first bracket 100 and the second bracket 200 are assembled, the rotation stopping groove 112 and the rotation stopping column 212 form a rotation stopping structure, and the problem of connection failure of the first connecting part 120 and the second connecting part 220 caused by relative rotation of the first bracket 100 and the second bracket 200 after the assembly is completed can be avoided.

Referring to fig. 7 and 9, in the tab holder according to some embodiments, the first positioning portion 110 and the first connecting portion 120 both protrude from the first end surface 131 of the first body 130 in the width direction of the tab, the second positioning portion 210 and the second connecting portion 220 both protrude from the second end surface 231 in the width direction of the tab, the first positioning portion 110 and the second positioning portion 210 can be fittingly inserted, and the first positioning portion 110 and the second positioning portion 210 can be mutually inserted before the first connecting portion 120 and the second connecting portion 220 are connected, so that the first connecting portion 120 and the second connecting portion 220 can be guided during assembly, the assembly efficiency can be effectively improved, and the problem that the first connecting portion 120 and the second connecting portion 220 are damaged due to improper assembly action can be effectively avoided. In specific implementation, the first positioning portion 110 includes a positioning post 111, the positioning post 111 protrudes from the first end surface 131 toward one side of the second bracket 200 along the width direction of the tab, the second positioning portion 210 includes a protrusion structure 213, the protrusion structure 213 protrudes from the second end surface 231 toward one side of the first bracket 100 along the width direction of the tab, a positioning hole 211 is disposed at a position corresponding to the positioning post 111 at one side of the protrusion structure 213 toward the first bracket 100, and the positioning post 111 and the positioning hole 211 can be inserted and connected in a matching manner, wherein a distance L1 of the protrusion of the positioning post 111 from the first end surface 131, a distance L2 of the protrusion of the first connecting portion 120 from the first end surface 131, a distance L3 of the protrusion structure 213 from the second end surface 231, and a distance L4 of the protrusion of the second connecting portion 220 from the second end surface 231 can be configured as follows: l1 > L2 or L3 > L4, therefore, the positioning post 111 can be inserted into the positioning hole 211 before the first connecting portion 120 is connected with the second connecting portion 220 during assembly; or L1 > L2 and L3 > L4, it can be structurally ensured that the positioning insertion of the positioning post 111 and the positioning hole 211 is prior to the connection of the first connecting part 120 and the second connecting part 220 during assembly. Thereby achieving the guidance of the first connection part 120 and the second connection part 220.

The first connecting portion 120 and the second connecting portion 220 can be connected by a snap fit, and a screwdriver is not required during assembly. For example, referring to fig. 3, 7, and 9, the second connection portion 220 is provided with the sub-clip 121, the first connection portion 120 is provided with the female clip 221 connected to the sub-clip 121 in a matching manner, during assembly, the first bracket 100 and the second bracket 200 move towards each other to the sub-clip 121 and the female clip 221 to be clamped with each other, so that the first bracket 100 and the second bracket 200 can be connected, the snap connection is simple and fast, and only the first bracket 100 and the second bracket 200 move relative to each other to realize a simple insertion, so that the assembly of the two parts can be completed, and the assembly process is simple and efficient. It will be appreciated that the positions of daughter card tab 121 and female card tab 221 may be reversed: the first connecting portion 120 may be provided with a sub-clip 121, and the second connecting portion 220 may be correspondingly provided with a female clip 221 engaged with the sub-clip 121, so as to achieve the above-mentioned functions. In addition, as can be seen from the above description, in some embodiments, the first positioning portion 110 and the second positioning portion 210 can perform positioning insertion before the daughter card 121 and the female card 221 are engaged with each other, so as to provide guidance for assembling the daughter card 121 and the female card 221, improve assembly efficiency, and also effectively avoid the occurrence of card damage due to improper assembly action (for example, forced assembly when the card positions are not matched).

In the tab holder according to some embodiments, referring to fig. 7 and 9, the first holder 100 includes a pair of the first positioning portions 110, and each of the first positioning portions 110 is located at two sides of the first through hole 141 to prevent the first through hole 140 from being blocked by the tab; correspondingly, the second bracket 200 includes a pair of the second positioning portions 210, each second positioning portion 210 is located at two sides of the second through hole 241 to avoid blocking the second through groove 240 and hindering the tab from entering, and thus, the pair of first positioning portions 110 are respectively matched and positioned with the pair of second positioning portions 210, which can improve the reliability of connection and positioning, and can effectively prevent the first bracket 100 and the second bracket 200 from rotating relatively during assembly, thereby ensuring that the first connecting portion 120 and the second connecting portion 220 can be accurately connected, and avoiding the damage of the first connecting portion 120, the second connecting portion 220 and the tab.

In the above embodiment, the number of the first connection parts 120 and the number of the second connection parts 220 may be 1 or more, and a tab holder in which the number of the first connection parts 120 and the number of the second connection parts 220 are 2 is provided as follows. Referring to fig. 7 and 9, the first end surface 131 of the first body 130 is provided with a pair of the first connecting portions 120, and the first connecting portions 120 are respectively located at two sides of the first through hole 141 to avoid blocking the first through groove 140. Correspondingly, the second end surface 231 of the first body 130 is correspondingly provided with a pair of the second connecting portions 220, and each second connecting portion 220 is respectively located at two sides of the second through hole 241 to avoid shielding the second through groove 240. Therefore, the two first connecting portions 120 and the two second connecting portions 220 are respectively connected with each other at two sides of the first through hole 141, so that the stability of the connection between the first support 100 and the second support 200 can be improved, the separation risk caused by relative shaking of the first support 100 and the second support 200 can be effectively avoided, and the stable tab collection and stable insulation of the tab support can be guaranteed. In addition, in the present embodiment, the first positioning portions 110 and the first connection portions 120 located at both sides of the first through hole 141 may be sequentially arranged along the extending direction of the tab (with reference to the direction during assembly), and correspondingly, the second positioning portions 210 and the second connection portions 220 located at both sides of the second through hole 241 may be sequentially arranged along the extending direction of the tab (with reference to the direction during assembly), for example, the first connection portion 120 is arranged at the outer side of the first positioning portion 110 along the extending direction of the tab, and the second connection portion 220 is arranged at the outer side of the second positioning portion 210 along the extending direction of the tab, so that the connection condition between the first connection portion 120 and the second connection portion 220 can be conveniently detected during assembly.

Referring to fig. 1, 2, 6 and 8, in the tab support according to some embodiments of the present application, a third connection portion 150 for connecting a top cover 500 is disposed on a first body 130, a fourth connection portion 250 for connecting the top cover 500 is disposed on a second body 230, and after the first support 100 and the second support 200 are assembled, the third connection portion 150 and the fourth connection portion 250 are respectively connected to corresponding connection structures on the top cover 500, so that the tab support is fixed, and thus, a tab is fixed. During specific implementation, the third connecting portion 150 is disposed on one side of the first body 130 facing the top cover 500 (with the orientation during assembly as a reference), the fourth connecting portion 250 is disposed on one side of the second bracket 200 facing the top cover 500 (with the orientation during assembly as a reference), and the third connecting portion 150 and the fourth connecting portion 250 may be of a slot structure for being engaged with a connecting buckle disposed on the top cover 500, which is simple in structure and convenient in connection. During the production process of the power battery, the bare cell 400 needs to be wrapped with a Mylar film and the Mylar film needs to be hermetically connected to the top cover 500 (for example, by hot-melting with plastic under the top cover), so as to obtain reliable sealing and protection. After the tab support frame is assembled, the tab support frame is connected with the top cover 500 through the third connecting part 150 and the fourth connecting part 250, so that tab fixing can be realized, and the tab shape is ensured not to deviate or change, thereby being beneficial to hot melting of a Mylar film.

Fig. 11 is a schematic perspective view of a single battery according to an embodiment of the present application, fig. 12 is a schematic view of an assembled state of a tab holder and a top cover 500 according to the embodiment of fig. 11, and referring to fig. 11 and 12, an embodiment of a second aspect of the present application provides a single battery, which includes a housing 300, a bare cell 400, a top cover 500, and the tab holder according to the embodiment of the first aspect. Wherein, the inside of casing 300 has the inner chamber, and casing 300 offers the opening 310 of intercommunication inner chamber, and naked electric core 400 includes naked electric core body 410 and utmost point ear 420, and naked electric core body 410 holds in the inner chamber of casing 300, and utmost point ear 420 stretches out to the outside of casing 300 from opening 310 to connect adaptor piece and top cap 500. The top cap 500 is coupled to the case 300 and covers the opening 310, and the tab holder is disposed between the bare cell body 410 and the top cap 500. Known by the foregoing, the assembly degree of difficulty can be reduced to split type utmost point ear support, reduce the risk of damaging utmost point ear 420, and first support 100 and second support 200 can assemble from utmost point ear 420 width direction's both sides, utmost point ear support assembly is accomplished the back, utmost point ear 420 holds in first logical groove 140 and the utmost point ear groove 160 that second logical groove 240 surrounded the formation, realize utmost point ear 420 in order to restraint, utmost point ear support can effectively block utmost point ear 420 interpolation, thereby avoid the problem that the inside short circuit of battery leads to the battery to become invalid.

In the battery cell of some embodiments, the positive tab and the negative tab of bare cell 400 extend from the opposite two ends of bare cell body 410, the end that extends that casing 300 corresponds to utmost point ear 420 at bare cell 400 both ends is provided with two openings 310, each opening 310 punishment do not has the top cap 500 to seal, and be provided with foretell utmost point ear support between each top cap 500 and bare cell body 410 respectively, can effectively block utmost point ear 420 interpolation, thereby avoid the inside short circuit of battery to lead to the problem of battery inefficacy.

Fig. 13 is a partial enlarged view at E in fig. 12, fig. 14 is a partial structural view of the top cover 500 in fig. 12, and referring to fig. 12 to 14, in a single battery cell according to some embodiments, the first body 130 on the first bracket 100 is further provided with a third connecting portion 150, the third connecting portion 150 includes a first engaging groove 151 located on a side of the first body 130 facing the top cover 500, a side of the top cover 500 facing the first body 130 is provided with a first engaging buckle 510, and the first engaging buckle 510 can be engaged with the first engaging groove 151; similarly, the second body 230 of the second bracket 200 is further provided with a fourth connecting portion 250, the fourth connecting portion 250 includes a second engaging groove 251 located on one side of the second body 230 facing the top cover 500, one side of the top cover 500 facing the second body 230 is provided with a second engaging buckle 522, and the second engaging buckle 522 can be fastened with the second engaging groove 251. The top cover 500 includes a top cover plate 510 and a lower plastic 520 connected to each other, and the first connecting fastener 521 and the second connecting fastener 522 are disposed on the lower plastic 520 at positions corresponding to the first locking groove 151 and the second locking groove 251, respectively.

Adopt the mode of foretell connector link and the mutual lock joint of draw-in groove to realize the rapid Assembly of top cap 500 and utmost point ear support, during the assembly, with utmost point ear support's first support 100 and second support 200 equipment back, correspond first connector link 521 and the second connector link 522 of top cap 500 and buckle into respectively in first draw-in groove 151 and the second draw-in groove 251, can realize utmost point ear support and top cap 500's fixing, the assembling process is simple, high efficiency, and utmost point ear support and top cap 500's fixed assurance book electric core back utmost point ear 420 form, avoid taking place the skew, change, thereby be favorable to the hot melt of Mylar membrane, can improve production efficiency to a certain extent.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims

1. The utility model provides a utmost point ear support which characterized in that includes first support and the second support that sets up along the width direction of utmost point ear, wherein:

the second support comprises a second body and a second connecting portion, a second through groove for the pole lug to pass through is formed in the second body, the second body faces one end of the first support and is provided with a second end face, the second through groove extends to penetrate through the second end face along the width direction of the pole lug and forms a second through hole, the second connecting portion is arranged on the second end face and is staggered with the second through hole, the second connecting portion can be detachably connected with the first connecting portion, and the first through groove and the second through groove are encircled to form a pole lug groove for the pole lug to pass through.

2. The tab holder according to claim 1, wherein the first holder further includes a first positioning portion, the second holder is further provided with a second positioning portion, the first positioning portion is provided on the first end surface and is offset from the first connection portion and the first through-hole, the second positioning portion is provided on the second end surface and is offset from the second connection portion and the second through-hole, and the second positioning portion is capable of engaging with the first positioning portion to restrict a relative movement direction of the first connection portion and the second connection portion in a width direction of the tab.

3. The tab holder as claimed in claim 2, wherein the first positioning portion includes a positioning post protruding from the first end surface in a width direction of the tab, and the second positioning portion includes a positioning hole, an axis of the positioning post extends in the width direction of the tab, and the positioning hole and the positioning post are coaxially insertable.

4. The tab holder as claimed in claim 3, wherein the outer wall of the positioning post is provided with a rotation stopping post, the inner wall of the positioning hole is provided with a rotation stopping groove, and the rotation stopping post can enter the rotation stopping groove along the axial direction of the first positioning part;

or the outer wall of the positioning column is provided with a rotation stopping groove, and the inner wall of the positioning hole is provided with a rotation stopping column; the rotation stopping column can enter the rotation stopping groove along the axial direction of the first positioning part.

5. The tab holder as claimed in claim 2, wherein the first connection part protrudes from the first end surface in a width direction of the tab, the second connection part protrudes from the second end surface in the width direction of the tab, and the first positioning part and the second positioning part are configured to be capable of being inserted into each other before the first connection part and the second connection part are connected.

6. The tab support according to claim 5, wherein the second connecting portion is provided with a sub-clip, and the first connecting portion is provided with a female clip which is connected with the sub-clip in a matching manner;

or, be provided with sub-buckle on the first connecting portion, be provided with on the second connecting portion with the female buckle that the sub-buckle cooperation is connected.

7. The tab holder as claimed in any one of claims 2 to 6, wherein the first holder includes a pair of the first positioning portions, the first positioning portions being located on both sides of the first through-hole; the second end face is correspondingly provided with a pair of second positioning parts, and the second positioning parts are respectively positioned at two sides of the second through hole.

8. The tab holder as claimed in claim 7, wherein the first end surface is provided with a pair of the first connection portions, and the first connection portions are respectively located at both sides of the first through hole; the second end face is correspondingly provided with a pair of second connecting parts, and the second connecting parts are respectively positioned at two sides of the second through hole.

9. The tab support of claim 1, wherein the first body is further provided with a third connecting portion, the second body is further provided with a fourth connecting portion, and the third connecting portion and the fourth connecting portion are respectively used for being connected with a top cover.

10. A battery cell, comprising:

a top cover connected to the housing and covering the opening;

the tab support of any one of claims 1 to 9, disposed between the bare cell body and the top cover, the tab penetrating into the tab slot, the first support and the second support being connected to each other through the first connection portion and the second connection portion and connected to the top cover, respectively.