CN218513541U

CN218513541U - Battery with a battery cell

Info

Publication number: CN218513541U
Application number: CN202222798597.1U
Authority: CN
Inventors: 於洪将; 陈继程; 魏磊; 王汭; 徐周
Original assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-02-21
Anticipated expiration: 2032-10-24

Abstract

The utility model discloses a battery, which comprises a shell, an electric core and a buffer protection piece; wherein the buffer protection piece surrounds the battery cell. The utility model discloses an add the buffering protection piece to surround the buffering protection piece outside electric core, make its and electric core laminating, can replace current insulating piece in order to realize the external shock safety protection to electric core, can improve the shock resistance of battery effectively, reach extension battery life's purpose.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery technology field especially relates to a battery.

Background

With the continuous rise of the new energy automobile industry, the market of the power battery is continuously expanding, but the performance and the safety of the power battery cell are also concerned.

In the traditional battery design, a roll core in the battery needs to be protected mainly so as to avoid the influence of external force bruise and foreign body puncture on the roll core. In the prior art, an insulation sheet is coated outside a winding core in a battery to achieve the effect of protecting the winding core. However, the insulating sheet is mostly a layer of incompressible PP film, the function of the insulating sheet is mostly insulation protection, and the safety protection effect on external impact and the like is very limited.

Therefore, improvements in the prior art are needed.

The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery to solve the not enough of prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a battery, which comprises a shell 60, an electric core 10 and a buffer protection piece 20; wherein, the first and the second end of the pipe are connected with each other,

the buffer protection member 20 surrounds the battery cell 10.

Further, in the battery, the buffer protection member 20 is disposed in a half-enclosed structure.

Further, in the battery, the tab 30 in the battery cell 10 is exposed out of the buffer protection member 20.

Further, in the battery, the buffer protection member 20 is formed with inverted portions 40 at positions corresponding to two opposite sides of the battery cell 10 in the width direction.

Further, in the battery, a chamfer 70 is formed on the reverse-buckling portion 40.

Further, in the battery, the angle of the chamfer 70 is 90-150 °.

Further, in the battery, the buffer protection member 20 is disposed to protrude from the battery cell 10 in the thickness direction of the battery cell 10.

Further, in the battery, the buffer protection member 20 is provided with a plurality of micro holes 50 and/or a plurality of grooves.

Further, in the battery, the porosity of the buffer protection member 20 is 20% to 80%;

the aperture of the micropores 50 is 0.01mm-0.05mm.

Further, in the battery, in the height direction of the battery cell 10, the length of the buffer protection member 20 exceeds one end of the battery cell 10 on the non-tab side.

Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:

the embodiment of the utility model provides a pair of battery is through addding buffering protection piece to buffer protection piece and surround outside electric core, make its and electric core laminating, can replace current insulating piece in order to realize the external force impact safety protection to electric core, can improve the shock resistance of battery effectively, reach extension battery life's purpose.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural plan view of a battery cell and a buffer protection member provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a battery cell and a buffer protection member provided in an embodiment of the present invention;

fig. 3 is a schematic structural front view of a battery cell and a buffer protection member provided in an embodiment of the present invention;

fig. 4 is a schematic top view of a buffer protection member according to an embodiment of the present invention;

fig. 5 is a schematic front view of a buffer protection member according to an embodiment of the present invention;

fig. 6 is a schematic side view of a buffer protection member according to an embodiment of the present invention;

fig. 7 is a schematic top view of a buffer protection member according to an embodiment of the present invention;

fig. 8 is a schematic front view of a buffer protection member according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a battery according to an embodiment of the present invention.

Reference numerals:

the battery comprises a battery core 10, a buffer protection piece 20, a tab 30, a back-off part 40, a micropore 50, a shell 60 and a chamfer 70.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

In view of the above-mentioned drawbacks of the conventional battery structure design, the applicant of the present invention is based on the practical experience and professional knowledge that are abundant for many years in the design and manufacture of such products, and is engaged in the application of the theory to actively make research and innovation, so as to hopefully create a technology capable of solving the drawbacks of the prior art, so that the battery structure design has more practicability. Through continuous research and design, and after repeated trial sample and improvement, the utility model discloses the practical value of utensil is established in the end.

Referring to fig. 1 to 3 and fig. 9, an embodiment of the present invention provides a battery, which includes a housing 60, a battery cell 10 and a buffer protection member 20; wherein the content of the first and second substances,

the buffer protection member 20 surrounds the battery cell 10, and the battery cell 10 is accommodated in the casing 60.

Compared with the prior art in which an insulating sheet is wrapped around the core, the buffer protection member 20 not only has the same insulating capability and can perform the insulating protection function, but also has the buffer protection capability and can perform the external force impact safety protection function on the core.

In the present embodiment, the buffer protection member 20 is preferably disposed in a half-enclosed structure, and is half-enclosed outside the battery cell 10, and the specific structure of the buffer protection member 20 is as shown in fig. 4 to 6, and the buffer protection member 20 is rectangular when viewed from the front and the side, and the buffer protection member 20 is C-shaped when viewed from the top. Of course, the shape of the buffer protection member 20 is not limited to the above-mentioned shapes, and may be other half-surrounding shapes as long as it can match the shape of the battery cell 10 and half-surround the battery cell 10.

The buffer protection member 20 may be made of PE or PP, and has good elasticity, and since the shape of the buffer protection member is attached to the battery cell 10, the buffer protection member may better replace an existing insulating sheet to protect the battery cell 10 from an impact injury caused by an external force or a foreign object.

In addition, the battery should also include necessary component designs such as electrolyte and a top cover, and the specific function of these component designs is to ensure that each function of the battery works normally.

As shown in fig. 1, in the present embodiment, the tab 30 in the battery cell 10 is exposed out of the buffer protection member 20.

It should be noted that, in the present embodiment, the purpose of exposing the tab 30 in the battery cell 10 to the buffer protection member 20 is to ensure that the welding of the tab 30 is not affected on the premise of protecting the battery cell 10.

As shown in fig. 1, 2 and 4, in the present embodiment, the buffer protection member 20 is formed with inverted portions 40 at positions corresponding to two opposite sides of the battery cell 10 in the width direction.

It should be noted that the width direction of the battery cell 10 refers to a horizontal direction with a relatively large dimension, that is, a direction indicated by an arrow X in fig. 1 and 3.

The shape of the inverted buckle portion 40 corresponds to the shape of the two side edges of the battery cell 10, so that the inverted buckle portion 40 and the battery cell 10 have a better fitting degree, and the inverted buckle portion 40 can be relatively and stably buckled on the battery cell 10.

In the present embodiment, a chamfer 70 is formed on the undercut 40;

the angle of the chamfer 70 is 90-150 deg..

It should be noted that, since the inverted buckle portion 40 is first contacted with the battery cell 10 when the buffer protection member 20 is half-surrounded on the battery cell 10, the chamfer 70 is designed on the inverted buckle portion 40, so that the buffer protection member 20 can be more easily assembled with the battery cell 10.

In the present embodiment, the buffer protection member 20 is disposed to protrude from the battery cell 10 in the thickness direction of the battery cell 10.

It should be noted that the thickness direction of the battery cell 10 refers to a horizontal direction with a relatively small size, that is, a direction indicated by a Y arrow in fig. 1.

In order to ensure that the buffer protection member 20 effectively protects the battery cell 10 in the thickness direction of the battery cell 10, the positions of the buffer protection member 20 corresponding to the two large faces of the battery cell 10 are about 0.1mm to 1mm protruded from the battery cell 10, as shown in fig. 1.

Referring to fig. 7-8, in the present embodiment, the buffer protection member 20 is formed with a plurality of micro holes 50 and/or a plurality of grooves.

It should be noted that, the buffer protection member 20 may be provided with only a plurality of micro holes 50, may be provided with only a plurality of grooves, or may be partially provided with micro holes 50 and partially provided with grooves. For example, the present embodiment is illustrated and described with respect to the opening of only a plurality of micro holes 50.

Specifically, the buffer protection member 20 has a plurality of micropores 50 distributed on the surface and inside thereof, the internal porosity of the buffer protection member 20 is 20% to 80%, and the pores 50 have a diameter of 0.01mm to 0.05mm.

It should be noted that, because the electrolyte is consumed in the battery circulation process, and in order to prolong the service life of the battery in the prior art, a certain amount of free electrolyte is injected into the battery for recycling and consumption, however, the free electrolyte in this form is only left at the bottom of the battery under the influence of gravity, and the effect of sufficient infiltration cannot be achieved for the whole winding core, so that the performance of the battery is affected. In order to solve the problem, in the present embodiment, the buffer protection member 20 is provided with a plurality of micro holes 50, so that the electrolyte can permeate into the buffer protection member 20 through the micro holes 50, and then the battery cell 10 is soaked by the buffer protection member 20, so as to supplement the consumption of the circulating electrolyte, and improve the circulating performance of the battery.

In addition, for metal foreign matters accidentally entering the battery, the porous design of the buffer protection member 20 can absorb the metal foreign matters into the battery, so as to prevent the metal foreign matters from damaging the battery core 10.

In the present embodiment, in the height direction of the battery cell 10, the length of the buffer protection member 20 exceeds one end of the battery cell 10 on the non-tab side.

It should be noted that, the height direction of the battery cell 10 refers to a vertical direction, that is, a direction indicated by a Z arrow in fig. 3.

As shown in fig. 3, the buffer protection member 20 may be higher than the battery cell 10 by a length margin of 2-6mm, where the length margin is at an end corresponding to a non-tab side of the battery cell 10, and when a core is to be welded to complete the core assembly, the buffer protection member 20 may move toward and be connected to the top cover under the action of gravity. Thus, the winding core can be protected, and when the battery is inverted, the free electrolyte can be adsorbed to the inside of the buffer protection member 20 and uniformly distributed on the surface of the battery core 10.

Although the terms cell, buffer protection, tab, undercut, micro-hole, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

In addition, the battery in the present embodiment may be applied to, but not limited to, electronic devices, electric vehicles, or electric power storage systems. The electronic device may be, for example, various computers, mobile phones, display screens, and the like, which use a battery as a driving power source. The electric vehicle may be, for example, an electric vehicle, an electric tricycle, an electric bicycle, or the like, which uses a battery as a driving power source. The power storage system may be, for example, a power storage system that uses a battery as a power storage source.

In these electronic devices, the battery may be electrically connected to the electric element to supply electric power to the electric element. Because the quick charge ability of the battery that this application provided is comparatively excellent, be favorable to like this that electronic equipment is arranged in application scenes such as outdoor energy storage, short-time power reserve and mobile energy storage to make electronic equipment's application scene more extensive.

In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this application and are within the spirit and scope of the exemplary embodiments of the application.

Furthermore, certain terminology has been used in this application to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be appreciated that in the foregoing description of embodiments of the present application, various features are grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one feature. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.

Each patent, patent application, publication of a patent application, and other material, such as articles, books, specifications, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.

Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Accordingly, embodiments of the present application are not limited to the embodiments described with particularity in the application.

Claims

1. A battery, characterized by comprising a case (60), a cell (10), and a buffer protection member (20); wherein the content of the first and second substances,

the buffer protection element (20) surrounds the battery cell (10).

2. The cell of claim 1, wherein the buffer protection (20) is provided in a semi-enclosed structure.

3. The cell of claim 1, wherein a tab (30) in the cell (10) is exposed to the buffer protection (20).

4. The battery cell of claim 1, wherein the buffer protection member (20) is provided with reverse buckling parts (40) at positions corresponding to two opposite sides of the battery cell (10) in the width direction.

5. The electrical core according to claim 4, wherein the undercut (40) is formed with a chamfer (70).

6. The cell of claim 5, wherein the chamfer (70) has an angle of 90 ° -150 °.

7. The battery cell of claim 1, wherein the buffer protection (20) is arranged protruding from the battery cell (10) in the thickness direction of the battery cell (10).

8. The electrical core according to claim 1, wherein the buffer protection member (20) is provided with a plurality of micropores (50) and/or a plurality of grooves.

9. The cell of claim 8, wherein the buffer protection (20) has a porosity of 20% to 80%;

the aperture of the micropores (50) is 0.01mm-0.05mm.

10. The electrical core according to claim 1, wherein the length of the buffer protection member (20) in the height direction of the electrical core (10) exceeds the end of the electrical core (10) on the non-polar ear side.