CN219436106U - Battery and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and a battery device, wherein the battery comprises a cover plate component and a battery core component, the battery core component is provided with an opening surface, an insulating tape is arranged on the opening surface, the cover plate component is arranged on the opening surface of the battery core component and comprises a cover plate body and an insulating part, the insulating part is arranged on one side of the cover plate body, which faces the battery core component, the insulating part is provided with a protruding part on one side, which faces the battery core component, the protruding part is used for propping against the battery core component, and the protruding part is at least partially overlapped with an orthographic projection pattern of the insulating tape on the opening surface. Through the structural design, the lug boss is used for abutting against the battery core assembly, and meanwhile, the insulating adhesive tape can be used for avoiding the lug boss from causing the membrane or the pole piece of the battery core assembly to turn over, so that the problem of short circuit between the positive electrode and the negative electrode is avoided.

Description

Battery and battery device

Technical Field

The present utility model relates to the field of battery technologies, and in particular, to a battery and a battery device.

Background

In the current design scheme of battery, the battery includes apron subassembly and electric core subassembly, and the insulating part of apron subassembly has the bellying, and the bellying supports electric core subassembly, and diaphragm or the pole piece of this kind of structural design leads to electric core subassembly to produce to turn over easily, causes anodal, negative pole short circuit.

Disclosure of Invention

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art by providing a battery that avoids the membrane or pole piece from being folded over by the raised portions of the insulator.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the utility model, a battery is provided, which comprises a cover plate assembly and a battery cell assembly, wherein the battery cell assembly is provided with an opening surface, an insulating adhesive tape is arranged on the opening surface, the cover plate assembly is arranged on the opening surface of the battery cell assembly, the battery cell assembly comprises a cover plate body and an insulating piece, the insulating piece is arranged on one side of the cover plate body, which faces the battery cell assembly, a protruding part is arranged on one side of the insulating piece, which faces the battery cell assembly, the protruding part is used for pressing the battery cell assembly, and the protruding part at least partially overlaps with an orthographic projection pattern of the insulating adhesive tape on the opening surface.

According to the technical scheme, the battery provided by the utility model has the advantages and positive effects that:

the battery provided by the utility model comprises a cover plate component and a battery cell component, wherein the battery cell component is provided with an opening surface, an insulating adhesive tape is arranged on the opening surface, a protruding part is arranged on one side, facing the battery cell component, of an insulating piece of the cover plate component, the protruding part is used for propping against the battery cell component, and the protruding part is at least partially overlapped with an orthographic projection pattern of the insulating adhesive tape on the opening surface. Through the structural design, the lug boss is used for abutting against the battery core assembly, and meanwhile, the insulating adhesive tape can be used for avoiding the lug boss from causing the membrane or the pole piece of the battery core assembly to turn over, so that the problem of short circuit between the positive electrode and the negative electrode is avoided.

Another main object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device employing the above-mentioned battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to another aspect of the present utility model, there is provided a battery device, including the battery according to the present utility model.

As can be seen from the above technical solutions, the battery device provided by the present utility model has the following advantages and positive effects:

according to the battery device provided by the utility model, the membrane or the pole piece of the battery core assembly of the battery can be prevented from being folded by adopting the battery provided by the utility model, so that the problem of short circuit between the positive electrode and the negative electrode is avoided.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

fig. 1 is a schematic perspective view of a battery according to an exemplary embodiment;

fig. 2 is a partially enlarged schematic view of a part of the structure of the battery shown in fig. 1;

FIG. 3 is a partial deformation schematic of FIG. 2;

fig. 4 is a schematic plan view of the cell assembly shown in fig. 2;

fig. 5 is a schematic plan view of a cell assembly of a battery shown according to another exemplary embodiment;

fig. 6 to 8 are schematic perspective views of a cap plate assembly of a battery according to several other exemplary embodiments, respectively.

The reference numerals are explained as follows:

100. a cover plate assembly;

110. a cover plate body;

120. an insulating member;

121. a boss;

122. a groove;

123. reinforcing ribs;

130. a pole;

200. a cell assembly;

201. an opening surface;

210. a tab;

300. a housing;

400. an insulating tape;

x, a first direction;

y, length direction;

z. widthwise direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic perspective view of a battery according to the present utility model is representatively illustrated. In this exemplary embodiment, the battery proposed by the present utility model is described as being applied to a vehicle-mounted battery as an example. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of battery devices, and such changes are still within the principles of the battery presented herein.

As shown in fig. 1, in an embodiment of the present utility model, a battery according to the present utility model includes a cap assembly 100, a cell assembly 200, and a case 300. Referring to fig. 2 to 4 in combination, a partially enlarged schematic view of a part of the structure of the battery is representatively illustrated in fig. 2, in which a three-dimensional assembly structure of one cap assembly 100 and a battery cell assembly 200 of the battery is specifically illustrated; a partially deformed schematic illustration of fig. 2 is representatively illustrated in fig. 3, with the cover assembly 100 being flipped over an angle relative to the cell assembly 200; a schematic plan view of the cell assembly 200 is representatively illustrated in fig. 4, in which an orthographic projection of the boss 121 on the opening surface 201 is shown in broken line form. The structure, connection mode and functional relationship of the main components of the battery according to the present utility model will be described in detail with reference to the above drawings.

As shown in fig. 1 to 4, in an embodiment of the present utility model, the battery cell assembly 200 is accommodated in the case 300 and has an opening surface 201, and an insulating tape 400 is disposed on the opening surface 201. The cover plate assembly 100 is disposed on the opening surface 201 of the battery cell assembly 200, the cover plate assembly 100 includes a cover plate body 110 and an insulating member 120, the insulating member 120 is disposed on one side of the cover plate body 110 facing the battery cell assembly 200, and one side of the insulating member 120 facing the battery cell assembly 200 is provided with a protrusion 121, the insulating member 120 can abut against the battery cell assembly 200 via the protrusion 121, and the protrusion 121 and an orthographic projection pattern of the insulating tape 400 on the opening surface 201 at least partially overlap. The battery cell assembly 200 further has a tab 210, and the tab 210 is connected to the post 130 of the cap plate assembly 100. Through the structural design, the utility model can utilize the insulation tape 400 to avoid the membrane or pole piece of the cell assembly 200 from being folded by the bulge 121 while utilizing the bulge 121 to resist the cell assembly 200, thereby avoiding the occurrence of the problem of short circuit between the positive electrode and the negative electrode.

It should be noted that, the cell assembly 200 includes a plurality of pole pieces, and the above-mentioned opening surface may be understood as a surface of the pole piece that is open. On this basis, in an embodiment of the present utility model, the opening surface may be a surface of the cell body lead tab 210 of the cell assembly 200. In some embodiments, the open face may also be understood as the surface of the cell assembly 200 opposite the cover assembly 100.

As shown in fig. 2 to 4, in an embodiment of the present utility model, the opening surface 201 of the cell assembly 200 and the insulating member 120 are respectively rectangular, and the shapes of the two are matched (i.e. the long side of the opening surface 201 is substantially parallel to the long side of the insulating member 120, and the short side is also substantially parallel), so that the long side direction of the rectangle is defined as a length direction Y, and the short side direction of the rectangle is defined as a width direction Z. On this basis, the orthographic projection pattern of the protruding portion 121 may be entirely within the range of the orthographic projection pattern of the insulating tape 400 along the length direction Y. Through the above structural design, the utility model can further ensure that the part of the protruding part 121, which abuts against the battery cell assembly 200, is fully contacted with the insulating tape 400, thereby further avoiding the membrane or pole piece of the battery cell assembly 200 from being folded.

As shown in fig. 4, based on the structural design that the orthographic pattern of the protrusion 121 is entirely within the orthographic pattern of the insulating tape 400, in an embodiment of the present utility model, the orthographic pattern of the insulating tape 400 may be partially outside the orthographic pattern of the protrusion 121 along the length direction Y. Through the structural design, the utility model can further avoid the membrane or the pole piece of the battery cell assembly 200 from being turned over. In some embodiments, when the front projection patterns of the protruding portions 121 are all located within the range of the front projection patterns of the insulating tape 400, the front projection patterns of the insulating tape 400 may also be all located within the range of the front projection patterns of the protruding portions 121 along the length direction Y, in other words, the front projection patterns of the insulating tape 400 and the front projection patterns of the protruding portions 121 may be completely overlapped along the length direction Y, which is not limited to this embodiment.

As shown in fig. 4, in an embodiment of the present utility model, taking a structure design in which the opening surface 201 of the battery cell assembly 200 and the insulating member 120 are respectively rectangular and have matched shapes as an example, the orthographic projection pattern of the protruding portion 121 may be all located within the orthographic projection pattern of the insulating tape 400 along the width direction Y. Through the above structural design, since the plurality of pole pieces of the battery cell assembly 200 are stacked along the width direction Y, the utility model can ensure that the insulating tapes 400 are arranged in the width direction Y, and each pole piece can be protected, thereby further improving the protection effect on the battery cell assembly 200.

Referring to fig. 5, a schematic plan view of a cell assembly 200 of a battery capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 5, wherein an orthographic projection of a boss 121 onto an open face 201 is illustrated in phantom.

As shown in fig. 5, in an embodiment of the present utility model, the opening surface 201 of the battery cell assembly 200 and the insulating member 120 are respectively rectangular and have a matched configuration, and a portion of the orthographic projection pattern of the protruding portion 121 overlaps a portion of the orthographic projection pattern of the insulating tape 400 along the length direction Y. In other words, the front projection pattern of the protruding portion 121 may not be completely located within the front projection pattern of the insulating tape 400.

As shown in fig. 2 to 4, in an embodiment of the present utility model, both ends of the insulating member 120 in the length direction Y may be provided with protrusions 121, respectively, that is, the insulating member 120 may press the opening surface 201 via the two protrusions 121, and correspondingly, both ends of the opening surface 201 in the length direction Y may be provided with insulating tapes 400, respectively. Wherein, the insulating tape 400 at the same end along the length direction Y at least partially overlaps with the orthographic projection pattern of the protruding portion 121. Through the structural design, the utility model can further optimize the pressing effect of the insulating piece 120 on the battery cell assembly 200 through the protruding parts 121, and simultaneously avoid the membrane or the pole piece of the battery cell assembly 200 from being folded due to the protruding parts 121 at two ends respectively.

As shown in fig. 2 and 3, in an embodiment of the present utility model, still taking a structural design in which the opening surface 201 of the cell assembly 200 and the insulating member 120 are respectively rectangular and matched in shape as an example, the insulating tape 400 may be disposed on the opening surface 201 and extend to two opposite surfaces adjacent to the opening surface 201 along the width direction Y, respectively. For example, the insulating tape 400 may be substantially "n" -shaped. Through the structural design, the protection and insulation effects of the insulating tape 400 on the battery cell assembly 200 can be further improved.

Referring to fig. 6, a schematic perspective view of a cover assembly 100 of a battery capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 6 with a partial area enlarged.

As shown in fig. 6, in an embodiment of the present utility model, a side of the protrusion 121 facing the cell assembly 200 may be provided with a groove 122. Through the above structural design, the electrolyte can be stored by using the grooves 122 of the protruding parts 121, and the electrolyte stored in the grooves 122 can be ensured to smoothly flow out to the cell assembly 200.

Referring to fig. 7, a schematic perspective view of a cover assembly 100 of a battery capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 7 with a partial area enlarged.

As shown in fig. 7, in an embodiment of the present utility model, taking a structural design in which the protrusion 121 of the insulating member 120 is provided with the groove 122 as an example, a reinforcing rib 123 may be provided in the groove 122, and the reinforcing rib 123 is connected between two opposite groove walls of the groove 122. Through the above structural design, the utility model can divide the groove 122 into a plurality of smaller groove cavities by the reinforcing ribs 123, and avoid weaker structural strength of the protruding part 121 caused by that only one groove cavity structure is arranged at the position of the protruding part 121. Because of the arrangement of the reinforcing ribs 123, compared with the integrally planar protruding portion 121, the reinforcing ribs 123 are easier to crush the structures such as the diaphragm and the pole piece of the battery cell assembly 200, and at this time, the protection effect of the insulating tape 400 on the battery cell assembly 200 can be further highlighted.

As shown in fig. 7, based on the structural design that the reinforcing ribs 123 may be disposed in the groove 122, in an embodiment of the present utility model, the reinforcing ribs 123 may extend in the length direction Y, that is, the reinforcing ribs 123 may be connected between two groove walls of the groove 122 opposite in the length direction Y, that is, the reinforcing ribs 123 may be disposed parallel to the pole pieces. In some embodiments, the reinforcing ribs 123 may extend in other directions, such as, but not limited to, the width direction Z, but not limited to, the present embodiment.

Referring to fig. 8, a schematic perspective view of a cover assembly 100 of a battery capable of embodying the principles of the present utility model in another exemplary embodiment is representatively illustrated in fig. 8 with partial areas shown enlarged.

As shown in fig. 8, in an embodiment of the present utility model, taking still a structural design in which the reinforcing ribs 123 extending in the length direction Y are provided in the groove 122 as an example, at least two reinforcing ribs 123 may be provided in the groove 122, and at least two reinforcing ribs 123 may be arranged at intervals in the width direction Z. In some embodiments, the at least two reinforcing ribs 123 may be arranged at intervals along other directions, such as, but not limited to, the length direction Y, but not limited to, the present embodiment.

As shown in fig. 1, in an embodiment of the present utility model, the battery cell assembly 200 may have two opening surfaces 201, where the two opening surfaces 201 are two end surfaces of the battery cell assembly 200 along the first direction X, and the two opening surfaces 201 are perpendicular to the first direction X, that is, the two opening surfaces 201 are opposite two surfaces of the battery cell assembly 200, and on the basis, two tabs 210 of the battery cell assembly 200 are led out from two sides of the battery cell assembly 200 along the first direction X. Correspondingly, the battery provided by the utility model can comprise two cover plate assemblies 100, wherein the two cover plate assemblies 100 are respectively arranged on the two opening surfaces 201 of the battery cell assembly 200, and the two cover plate assemblies 100 are respectively positioned at two ends of the battery along the first direction X. Through the structural design, the utility model can meet the structural design requirement of the battery led out from the two sides of the pole 130. In some embodiments, when the battery adopts the structure design with two sides of the electrode posts 130, the positive and negative electrode posts 130 can be led out from two sides that are not opposite, in other words, in various possible embodiments consistent with the design concept of the present utility model, the cell assembly 200 may have two non-coplanar opening surfaces 201, the battery includes two cover assemblies 100, and the two cover assemblies 100 are respectively disposed on the two opening surfaces 201.

It should be noted herein that the batteries shown in the drawings and described in this specification are only a few examples of the wide variety of batteries that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery shown in the drawings or described in this specification.

In summary, the battery provided by the utility model includes the cover assembly 100 and the battery cell assembly 200, the battery cell assembly 200 has an opening surface 201, the opening surface 201 is provided with the insulating tape 400, a side of the insulating member 120 of the cover assembly 100 facing the battery cell assembly 200 is provided with the protrusion 121, the protrusion 121 is used for abutting against the battery cell assembly 200, and the protrusion 121 and the orthographic projection pattern of the insulating tape 400 on the opening surface 201 are at least partially overlapped. Through the structural design, the utility model can utilize the insulation tape 400 to avoid the membrane or pole piece of the cell assembly 200 from being folded by the bulge 121 while utilizing the bulge 121 to resist the cell assembly 200, thereby avoiding the occurrence of the problem of short circuit between the positive electrode and the negative electrode.

Based on the above detailed description of several exemplary embodiments of the battery set forth in the present utility model, an exemplary embodiment of the battery device set forth in the present utility model will be described below.

In one embodiment of the present utility model, the battery device according to the present utility model includes the battery according to the present utility model and described in detail in the above embodiment. The battery device provided by the utility model can be a battery module or a battery pack.

It should be noted herein that the battery devices shown in the drawings and described in this specification are only a few examples of the wide variety of battery devices that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the battery device shown in the drawings or described in this specification.

In summary, in the battery device provided by the utility model, the membrane or the pole piece of the battery core assembly of the battery can be prevented from being folded by adopting the battery provided by the utility model, so that the problem of short circuit between the positive electrode and the negative electrode is avoided.

Exemplary embodiments of the battery and the battery device according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims (15)

1. The utility model provides a battery, its characterized in that, includes apron subassembly and electric core subassembly, electric core subassembly has the opening face, be provided with the insulating tape on the opening face, apron subassembly set up in on the opening face of electric core subassembly, and including apron body and insulating piece, the insulating piece set up in apron body orientation one side of electric core subassembly, the insulating piece orientation one side of electric core subassembly is provided with the bellying, the bellying is used for supporting the pressure electric core subassembly, the bellying with the insulating tape is in orthographic projection figure on the opening face is at least partly overlapped.

2. The battery according to claim 1, wherein the opening surface and the insulating member are each rectangular and matched in shape, a long side direction defining the rectangle is a length direction, and a short side direction is a width direction; and the front projection patterns of the protruding parts are all located in the range of the front projection patterns of the insulating adhesive tape along the length direction.

3. The battery according to claim 2, wherein the orthographic pattern portion of the insulating tape is located outside the range of the orthographic pattern of the protruding portion in the length direction.

4. The battery according to claim 2, wherein the orthographic pattern of the insulating tape is entirely located within the orthographic pattern of the protruding portion along the length direction.

5. The battery according to claim 1, wherein the opening surface and the insulating member are each rectangular and matched in shape, a long side direction defining the rectangle is a length direction, and a short side direction is a width direction; and the front projection patterns of the protruding parts are all located in the range of the front projection patterns of the insulating adhesive tape along the width direction.

6. The battery according to claim 1, wherein the opening surface and the insulating member are each rectangular and matched in shape, a long side direction defining the rectangle is a length direction, and a short side direction is a width direction; wherein a portion of the orthographic pattern of the protruding portion overlaps a portion of the orthographic pattern of the insulating tape.

7. The battery according to claim 1, wherein the opening surface and the insulating member are each rectangular and matched in shape, a long side direction defining the rectangle is a length direction, and a short side direction is a width direction; the insulation part is provided with protruding portions along two ends of the length direction respectively, the opening face is provided with insulation tapes along two ends of the length direction respectively, and the insulation tapes located at the same end along the length direction are at least partially overlapped with the orthographic projection patterns of the protruding portions.

8. The battery according to claim 1, wherein the opening surface and the insulating member are each rectangular and matched in shape, a long side direction defining the rectangle is a length direction, and a short side direction is a width direction; the insulating tape is arranged on the opening surface and extends to two opposite surfaces adjacent to the opening surface along the width direction respectively.

9. The battery of claim 1, wherein a side of the boss facing the cell assembly is notched.

10. The battery of claim 9, wherein a rib is disposed in the groove, the rib being connected between opposing groove walls of the groove.

11. The battery according to claim 10, wherein the insulating member has a rectangular shape, a long side direction defining the rectangular shape is a length direction, and a short side direction is a width direction; the reinforcing ribs extend along the length direction, and are connected between two groove walls of the groove, which are opposite along the length direction.

12. The battery according to claim 11, wherein at least two of the reinforcing ribs are provided in the groove, the at least two reinforcing ribs being arranged at intervals in the width direction.

13. The battery of any one of claims 1-12, wherein the cell assembly has two open faces that are not coplanar, the battery comprising two cover assemblies that are disposed on the two open faces, respectively.

14. The battery of claim 13, wherein the two opening surfaces are two end surfaces of the cell assembly along a first direction, the two opening surfaces are perpendicular to the first direction, and the two cover assemblies are located at two ends of the battery along the first direction.

15. A battery device comprising the battery according to any one of claims 1 to 14.