CN216250795U

CN216250795U - Battery with a battery cell

Info

Publication number: CN216250795U
Application number: CN202122888584.9U
Authority: CN
Inventors: 杨强
Original assignee: Xiamen Haichen New Energy Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2021-09-10
Filing date: 2021-11-23
Publication date: 2022-04-08
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a battery, which comprises: the end part of the shell is provided with at least one through hole, the flow collecting disc is arranged in the shell and positioned at the end part of the shell, at least one bulge is arranged on the flow collecting disc, and the at least one bulge is correspondingly matched in the at least one through hole. Therefore, the structural strength of the current collecting disc can be improved by arranging the bulge on the current collecting disc, so that the structural strength of the battery is improved. Meanwhile, the protrusions can be matched with the through holes formed in the shell, positioning can be facilitated, the circumferential limit of the current collecting disc inside the shell can be increased, and the connection stability of the current collecting disc and the shell is improved. In addition, the cooperation of the bulge and the through hole can reduce the occupied space of the bulge, and the miniaturization design of the battery is facilitated.

Description

Battery with a battery cell

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery.

Background

In the prior art, the battery comprises a current collecting disc, a shell and a winding core, wherein the current collecting disc is arranged in the shell and in a space limited by the winding core, one side of the current collecting disc is connected with a pole lug, the other side of the current collecting disc is connected with the shell, and the shell is connected with the current collecting disc and the winding core is connected with the current collecting disc. The stability of the intensity that shell and current collection dish after connecting is connected is not enough, exists relative displacement easily, is unfavorable for the normal use of battery, and stacks up between current collection dish and the shell and set up and be unfavorable for the utilization to shell inner space, can't realize the location to the shell, is unfavorable for the miniaturized design of battery.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the utility model to propose a battery.

A battery according to an embodiment of the present invention includes: the end part of the shell is provided with at least one through hole, the flow collecting disc is arranged in the shell and positioned at the end part of the shell, at least one bulge is arranged on the flow collecting disc, and the at least one bulge is correspondingly matched in the at least one through hole.

Therefore, the structural strength of the current collecting disc can be improved by arranging the bulge on the current collecting disc, so that the structural strength of the battery is improved. Meanwhile, the protrusions can be matched with the through holes formed in the shell, positioning can be facilitated, the circumferential limit of the current collecting disc inside the shell can be increased, and the connection stability of the current collecting disc and the shell is improved. In addition, the cooperation of the bulge and the through hole can reduce the occupied space of the bulge, and the miniaturization design of the battery is facilitated.

In some embodiments, the protrusion is welded to the wall of the through hole.

In some embodiments, the side wall of the protrusion is welded to the hole wall of the through hole in a flush joint manner.

In some embodiments, the protrusion is provided on a side surface of the current collecting plate facing the end of the housing, and the protrusion is adapted to a shape of the through hole.

In some embodiments, an end surface of the free end of the projection is flush with an outer surface of the end of the housing.

In some embodiments, the thickness of the protrusion is less than or equal to the height of the through hole.

In some embodiments, the thickness of the protrusion is greater than the thickness of the current collecting disk.

In some embodiments, the protrusion is centrally located on the manifold disc.

In some embodiments, the through-holes are circular, elliptical, oblong, or polygonal holes.

In some embodiments, a winding core is arranged in the outer shell, the current collecting disc is arranged between the winding core and the inner wall of the outer shell, and the winding core is connected with the current collecting disc in a welding mode.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

Fig. 2 is a schematic cross-sectional view of a battery according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of a partial structure of a battery according to an embodiment of the present invention.

Reference numerals:

a battery 100;

a housing 10; a through hole 11; an open mouth 12;

a collector plate 20; and a projection 21.

Detailed Description

Embodiments of the present invention are described in detail below, the embodiments described with reference to the drawings are exemplary, and a battery 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.

According to the battery 100 of the embodiment of the present invention, the battery 100 may include: the collecting tray 20 is arranged in the shell 10 and positioned at the end part of the shell 10, at least one bulge 21 is arranged on the collecting tray 20, and the at least one bulge 21 is correspondingly matched in the at least one through hole 11.

As shown in fig. 1 to 3, one end (e.g., the top end as shown in fig. 1) of the housing 10 may be formed with an open opening 12, a cap assembly (not shown) covering the open opening 12 may be provided on the open opening 12, the other end (e.g., the bottom end as shown in fig. 1) of the housing 10 is provided with a through hole 11, the current collecting tray 20 is located inside the housing 10, and a protrusion may be formed at the bottom of the current collecting tray 20 to facilitate the engagement of the protrusion 21 with the through hole 11.

According to the battery of the embodiment of the present invention, the structural strength of the current collecting tray 20 can be improved by providing the protrusions 21 on the current collecting tray 20, so as to improve the structural strength of the battery 100. Meanwhile, the protrusion 21 can be matched with the through hole 11 formed in the housing 10, so that the positioning is facilitated, the circumferential limit of the collecting disc 20 inside the housing 10 can be increased, and the connection stability of the collecting disc 20 and the housing 10 is increased. In addition, the cooperation of the protrusion 21 and the through hole 11 can reduce the occupied space of the protrusion 21, which is beneficial to the miniaturized design of the battery 100.

Specifically, the projection 21 may be connected by welding with the hole wall of the through-hole 11. Therefore, the fastening performance of the connection between the collecting tray 20 and the casing 10 can be increased by welding the protrusions 21 and the hole walls, so that the collecting tray 20 and the casing 10 are fixedly connected, the connection stability between the collecting tray 20 and the casing 10 is increased, and the situation that the collecting tray 20 and the casing 10 are separated from each other can be prevented.

In some embodiments, as shown in fig. 2, the side wall of the protrusion 21 is welded to the hole wall of the through hole 11. After the protrusions 21 are matched with the through holes 11, connecting gaps are formed in the surface of one side, away from the collecting plate 20, of the bottom of the shell 10, and the formed gaps are welded into splicing welding. Compared with penetration welding adopted by the prior art, the penetration welding realizes fixed connection by penetrating the end parts of the current collecting disc and the shell in a welding mode, but the process requirement of the penetration welding is high, the realization of the process is inconvenient, the welding yield is influenced, and the condition of sweat deficiency and over-welding existing in the internal welding is not easy to detect.

From this, the lateral wall of arch 21 and the pore wall piece welding of through-hole 11 increase the fastening nature of being connected between current collecting tray 20 and the shell 10 bottom, increase the leakproofness of shell 10 simultaneously, can guarantee welded yield, increase the welded convenience, can comparatively audio-visual observation welded condition, reduce the possibility that appears overwelding and rosin joint.

Further, a projection 21 may be provided on a side surface of the end of the collecting plate 20 facing the case 10, the projection 21 being adapted to the shape of the through-hole 11. Therefore, the protrusions 21 are disposed on the surface of the collecting tray 20 facing the end of the casing 10, so that the protrusions 21 can fit into the through holes 11 to form a connection, and the collecting tray 20 can be attached to the inner surface of the end of the casing 10, so that the structure of the battery 100 is more compact, and the casing 10 can form a larger space for mounting the winding core.

In detail, the end surface of the free end of the projection 21 is flush with the outer surface of the end of the housing 10. One end of the protrusion 21 is fixed to the collecting plate 20, or the protrusion 21 may be formed on one side of the collecting plate 20 close to the bottom, and the other end of the protrusion 21 is a free end (the end of the protrusion 21 away from the collecting plate 20), and after the protrusion 21 is fitted to the through hole 11, the end face of the free end may be flush with the outer side face of the bottom of the housing 10.

Therefore, the free end of the protrusion 21 is flush with the outer surface of the end part of the shell 10, so that the protrusion 21 and the shell 10 can be welded conveniently, the structural strength of the joint after welding is increased, the flatness of the outer surface of the end part of the shell 10 is improved, and the battery 100 can be mounted conveniently.

In some embodiments, the thickness of the protrusion 21 is less than or equal to the height of the through-hole 11. The length of the protrusion 21 in the axial direction is less than or equal to the length of the through hole 11 in the axial direction, and after the protrusion 21 is fitted into the through hole 11, the end surface of the free end of the protrusion 21 is lower than the outer surface of the housing 10, or the end surface of the free end is flush with the outer surface of the housing 10. Therefore, the thickness of the protrusion 21 is less than or equal to the height of the through hole 11, so that a gap is formed on one side of the outer surface of the casing 10, welding along the gap is facilitated, the connection between the current collecting plate 20 and the end of the casing 10 is firmer, and the protrusion 21 is prevented from exceeding the bottom of the casing 10 and affecting the normal use of the battery 100.

Optionally, the thickness of the protrusion 21 is greater than the thickness of the current collecting disk 20. I.e. the distance of the projections 21 in the axial direction is greater than the distance of the collector disc 20 in the axial direction. Therefore, when the bulge 21 is in fit welding with the through hole 11, the bulge 21 can avoid welding to cause the current collecting disc 20 to be welded through, the welding quality of a gap is influenced, the tightness of connection between the current collecting disc 20 and the shell 10 can be improved, the welding penetration is increased, and the welding quality is further improved.

As shown in fig. 2, a boss 21 is provided at the center of the current collecting plate 20. Therefore, the bulge 21 arranged in the middle of the current collecting plate 20 can collect the current at each point on the current collecting plate 20 in time and lead the current to flow to an external circuit, and the service life of the current collecting plate and the load of the battery 100 are prolonged. At the same time, the user can select the desired position,

specifically, the through-hole 11 is a circular hole, an elliptical hole, an oblong hole, or a polygonal hole. Thereby, the cross-sectional area of the through-hole 11 is not unique so that it is possible to fit the protrusions 21 of different cross-sectional areas, increasing the practicality and variety of choices of the through-hole 11.

Optionally, a winding core (not shown) is disposed in the housing 10, the collecting plate 20 is disposed between the winding core and the inner wall of the housing 10, and the winding core is connected to the collecting plate 20 by welding. That is, one end of the housing 10 may be provided with an open opening 12, the winding core is placed inside the housing 10 from the open opening 12, and the winding core is fixed in the housing 10, one end of the winding core departing from the open opening 12 is provided with a tab, the tab is connected with one side of the current collecting disc 20 close to the open opening 12, one side of the current collecting disc 20 far away from the open opening 12 is provided with a protrusion 21, the protrusion 21 may be adapted to a through hole 11 provided at the other end of the housing 10 (one end far away from the open opening 12), and the end of the protrusion 21 far away from one side of the current collecting disc 20 is flush with the outer surface of the bottom of the housing 10.

Therefore, the current collecting disc 20 is arranged between the winding core and the inner wall of the shell 10, and the bulge 21 and the through hole 11 form a gap for welding at the bottom of the shell 10, so that the welding convenience and the welding angle adjustability are improved, the current collecting disc 20 and the shell 10 are fixedly connected more tightly, the welding result is easy to observe, the welding quality and yield are improved, and the production and manufacturing speed is increased.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

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

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, comprising:

a housing having at least one through hole formed at an end thereof;

the flow collecting disc is arranged in the shell and positioned at the end part of the shell, at least one bulge is arranged on the flow collecting disc, and the at least one bulge is correspondingly matched in the at least one through hole.

2. The battery of claim 1, wherein the protrusion is welded to the wall of the through hole.

3. The battery of claim 2, wherein the side walls of the protrusions are welded to the walls of the through holes.

4. The battery according to claim 1, wherein the protrusion is provided on a side surface of the current collecting plate facing the end of the case, the protrusion being adapted to a shape of the through hole.

5. The battery of claim 1, wherein an end surface of a free end of the protrusion is flush with an outer surface of the end of the housing.

6. The battery of claim 1, wherein the protrusion has a thickness that is less than or equal to a height of the through hole.

7. The cell defined in claim 1, wherein the thickness of the protrusion is greater than the thickness of the current collecting disk.

8. The cell defined in claim 1, wherein the protrusion is centrally located on the current collecting disk.

9. The battery according to claim 1, wherein the through-hole is a circular hole, an elliptical hole, an oblong hole, or a polygonal hole.

10. The battery of claim 1, wherein a winding core is disposed in the case, the current collecting disc is disposed between the winding core and the inner wall of the case, and the winding core is welded to the current collecting disc.