CN218887260U

CN218887260U - Battery and battery device

Info

Publication number: CN218887260U
Application number: CN202320015772.7U
Authority: CN
Inventors: 刘聪毅; 赵炎; 杜国艺
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-04-18
Anticipated expiration: 2033-01-04

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 an electric core component, the cover plate component comprises a cover plate body and an insulating part, the insulating part is arranged on one side surface of the cover plate body facing the electric core component, one side surface of the insulating part facing the electric core component is provided with a first area, and the first area is butted with the electric core component; the cover plate body is provided with a liquid injection hole, the insulating part is provided with a first through hole, the first through hole is provided with a convex rib towards the orifice of one end of the cell component, and the convex rib extends towards the cell component and protrudes out of the first area. Through the structure design, the utility model discloses can utilize protruding muscle to support the diaphragm of electric core subassembly in taking out negative pressure technology, avoid the diaphragm to be sucked up and take out and lead to just, the negative pole takes place the short circuit, guarantee to annotate going on smoothly of liquid ization one-tenth processing procedure.

Description

Battery and battery device

Technical Field

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

Background

The battery needs to adopt the technology of taking out the negative pressure in the processing procedure of annotating the liquid and becoming, because the height of diaphragm is the highest in the electric core subassembly, and the diaphragm texture is softer, leads to the diaphragm to be taken out from at the in-process of taking out the negative pressure easily, causes to have the short circuit risk between the battery positive negative pole.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes above-mentioned prior art's at least defect, provides one kind and avoids the diaphragm to be taken out the battery that leaves when adopting to take out negative pressure technology to annotate the liquid formation.

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

according to an aspect of the present invention, a battery is provided, wherein the battery includes a cover plate assembly and a battery cell assembly, the cover plate assembly includes a cover plate body and an insulating member, the insulating member is disposed on a side surface of the cover plate body facing the battery cell assembly, a side surface of the insulating member facing the battery cell assembly has a first region, and the first region abuts against the battery cell assembly; the cover plate body is provided with a liquid injection hole, the insulating part is provided with a first through hole, the first through hole is communicated with the liquid injection hole, a convex rib is arranged at a hole opening at one end of the first through hole, and the convex rib extends towards the electric core assembly and protrudes out of the first area.

According to the above technical scheme, the utility model provides an advantage and the positive effect of battery lie in:

the utility model provides a battery is including the apron subassembly, and the apron subassembly is including apron body and insulating part, and the liquid hole has been seted up to the apron body, and the insulating part is seted up and is annotated the first through-hole that the liquid hole is linked together. Wherein, the first through-hole is provided with protruding muscle towards the one end drill way department of electric core subassembly, protruding muscle towards electric core subassembly protruding and stretching and outstanding in first region. Through the structure design, the utility model discloses can utilize protruding muscle to support the diaphragm of electric core subassembly in taking out negative pressure technology, avoid the diaphragm to be sucked up and take out and lead to just, the negative pole takes place the short circuit, guarantee to annotate going on smoothly of liquid ization one-tenth processing procedure.

Another primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device using the above-mentioned battery.

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

According to the above technical scheme, the utility model provides a battery device's advantage lies in with positive effect:

the utility model provides a battery device, through adopting the utility model provides a battery can utilize protruding muscle to support the diaphragm of electric core subassembly in taking out negative pressure technology, avoids the diaphragm to be taken out by the suction and leads to just, the negative pole takes place the short circuit, guarantees to annotate going on smoothly of liquid formation processing procedure.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

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

fig. 2 is a partially enlarged plan view of the battery shown in fig. 1;

fig. 3 is an enlarged schematic view of a portion a in fig. 2;

FIG. 4 is a perspective view of the cover plate assembly shown in FIG. 1 from a perspective;

FIG. 5 is a perspective view of the cover plate assembly shown in FIG. 1 from another perspective;

fig. 6 is an enlarged schematic view of a portion B in fig. 5;

FIG. 7 is an exploded perspective view of the cover plate assembly shown in FIG. 5;

fig. 8 is an enlarged schematic view of portion C of fig. 7;

fig. 9 is a partial cross-sectional view of the cover plate assembly shown in fig. 1.

The reference numerals are explained below:

100. a cover plate assembly;

110. a cover plate body;

111. a liquid injection hole;

112. a boss;

120. an insulating member;

121. a first through hole;

122. a baffle plate;

123. a second through hole;

124. a rib is protruded;

125. a projection;

200. an electrical core assembly;

210. a diaphragm;

220. a negative plate;

230. a positive plate;

300. a housing;

H1. a length;

H2. spacing;

x. relative arrangement direction.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, 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 invention 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 invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

Referring to fig. 1, a schematic perspective view of a battery according to the present invention is representatively illustrated. In this exemplary embodiment, the present invention is directed to a battery that is applied to an in-vehicle battery as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of battery devices, and such changes are within the scope of the principles of the presently disclosed batteries.

As shown in fig. 1, in an embodiment of the present invention, the present invention provides a battery including a cover plate assembly 100 and a battery cell assembly 200 (not shown in fig. 1). Referring to fig. 2 to 9 in combination, fig. 2 representatively illustrates a partial enlarged plan view of a battery, wherein a portion of a housing 300 of the battery is cut away, thereby facilitating the illustration of an internal electrical core assembly 200; an enlarged schematic view of portion a of fig. 2 is representatively illustrated in fig. 3; fig. 4 and 5 representatively illustrate schematic perspective views of the cover plate assembly 100 at two different viewing angles, respectively; an enlarged schematic view of portion B of fig. 5 is representatively illustrated in fig. 6; representatively illustrated in fig. 7 is an exploded isometric view of the cover plate assembly 100 illustrated in fig. 5; an enlarged schematic view of portion C of fig. 7 is representatively illustrated in fig. 8; a partial cross-sectional view of the cover plate assembly 100 is representatively illustrated in fig. 9. The structure, connection mode and functional relationship of the main components of the battery provided by the present invention will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 9, in an embodiment of the present invention, the cover plate assembly 100 includes a cover plate body 110 and an insulating member 120, the insulating member 120 is disposed on a side surface of the cover plate body 110 facing the cell assembly 200, and a side surface of the insulating member 120 facing the cell assembly 200 has a first region abutting against the cell assembly 200. The cover plate body 110 has a liquid injection hole 111, and the insulating member 120 has a first through hole 121, wherein the first through hole 121 is communicated with the liquid injection hole 111. On the basis, the first through hole 121 is provided with a rib 124 towards one end opening of the electric core assembly 200, the rib 124 protrudes from the first area towards the electric core assembly 200, and the rib 124 protruding further from the first area protrudes into the electric core assembly 200 due to the first area abutting against the electric core assembly 200. Through the structure design, the utility model discloses can utilize protruding muscle 124 to support the diaphragm 210 of electric core subassembly 200 in taking out negative pressure technology, avoid diaphragm 210 to be taken out by the suction and lead to just, the negative pole takes place the short circuit, guarantee to annotate going on smoothly of liquid ization one-tenth processing procedure.

As shown in fig. 6, 7 and 9, in an embodiment of the present invention, a baffle 122 may be disposed at a position of the first through hole 121 facing the one end aperture of the cell assembly 200, and the baffle 122 defines a second through hole 123, and the second through hole 123 is communicated with the first through hole 121. On this basis, the side surface of the lid body 110 facing the insulator 120 at the orifice of the injection hole 111 may be provided with a boss 112, i.e., the injection hole 111 penetrates through the boss 112, and the orifice of the injection hole 111 facing the electric core assembly 200 is opened on the end face of the boss 112 facing the electric core assembly 200. The boss 112 is received in the first through hole 121, and a gap is provided between an end of the boss 112 facing the insulator 120 and the baffle 122. Through the structure design, the utility model discloses can make annotate liquid hole 111 towards the one end drill way of utmost point post subassembly and be close to the second through-hole 123 of baffle 122 more, further promote and annotate the liquid effect. Moreover, because a gap is formed between the boss 112 and the baffle 122, after the electrolyte is injected, part of the electrolyte can flow out from the gap and flow into the electric core assembly 200, so that the electrolyte is prevented from flowing into the electric core assembly 200 from the second through hole 123 to directly wash the positive and negative electrode plates by a large amount of electrolyte, and the damage to the electrode plates is avoided. In addition, when the battery is injected, the injection nozzle of the injection device can be set up at the position of the injection hole 111, and the injection hole 111 and the boss 112 can provide a certain supporting function, so that the problems of inclination and the like of the cover plate 110 are avoided.

As shown in fig. 6 and 8, based on the structural design that the cover plate is provided with the boss 112 and the boss 112 is accommodated in the first through hole 121 and abuts against the baffle 122, in an embodiment of the present invention, the baffle 122 may only shield a portion of the orifice of the first through hole 121, so that the portion of the first through hole 121 that is not shielded by the baffle 122 exposes the boss 112. Taking the baffle 122 shown in fig. 6 and 8 as an example, which is substantially rectangular (both ends are arc-shaped), the width of the rectangle is smaller than the aperture of the first through hole 121, so that the two sides of the baffle 122 leave part of the aperture of the first through hole 121 uncovered respectively, and the uncovered aperture area is substantially arc-shaped. Through the structure design, the utility model discloses can further avoid battery notes liquid in-process electrolyte directly to erode the pole piece. In some embodiments, the baffle 122 may have other shapes, for example, an annular baffle 122 may be disposed at an end of the first through hole 121 facing the aperture of the electrical core assembly 200, and the annular baffle 122 surrounds the aperture of the first through hole 121 and defines the second through hole 123, which is not limited in this embodiment.

As shown in fig. 2 and 3, in an embodiment of the present invention, the rib 124 extends into the electric core assembly 200 toward one end of the electric core assembly 200. Through the structure design, the utility model discloses can utilize protruding muscle 124 to extend to the inside of battery pack subassembly 200, further avoid diaphragm 210 in view of the above to be sucked up and take out in taking out the negative pressure technology.

As shown in fig. 2 and 3, based on the structural design that the protruding rib 124 extends into the electric core assembly 200 towards one end of the electric core assembly 200, in an embodiment of the present invention, one end of the protruding rib 124 towards the electric core assembly 200 can abut against the diaphragm 210 of the electric core assembly 200. Through the structure design, the utility model discloses can utilize protruding muscle 124 direct butt in diaphragm 210, further avoid diaphragm 210 in view of the above to be sucked up and take out in taking out the negative pressure technology.

As shown in fig. 2 and 3, based on the structural design that the protruding rib 124 extends into the electric core assembly 200 towards one end of the electric core assembly 200, in an embodiment of the present invention, the electric core assembly 200 includes a positive plate, a negative plate 220 and a diaphragm 210, and the diaphragm 210 is closer to the cover plate assembly 100 than the negative plate 220 along the relative arrangement direction X (e.g., the height direction shown in fig. 1 to 3) of the cover plate assembly 100 and the electric core assembly 200. On this basis, along the relative arrangement direction X, the length H1 of the portion of the rib 124 extending into the core assembly 200 may be smaller than or equal to the distance H2 between the separator 210 and the negative electrode sheet 220 (i.e., overlap region). In order to guarantee just, insulating properties between the negative pole, diaphragm 210 need surpass negative pole piece 220 and set up, and the overlap that need satisfy when diaphragm 210 and negative pole piece 220 between distance are the design of battery pack 200 is regional, through above-mentioned structural design, the utility model discloses can guarantee protruding muscle 124 and press the effect of establishing diaphragm 210, avoid diaphragm 210 to be taken out in the notes liquification formation technology under negative pressure environment in view of the above, can avoid protruding muscle 124 to stretch out the distance too much and cause protruding muscle 124 to press the negative pole piece easily and lead to negative pole piece 220 to fall the problem of material simultaneously.

As shown in fig. 2 and 3, based on the structural design that the length H1 of the portion of the convex rib 124 extending into the core assembly 200 is less than or equal to the distance H2 between the diaphragm 210 and the negative plate 220, in an embodiment of the present invention, along the relative arrangement direction X, the distance H2 between the diaphragm 210 and the negative plate 220 may be less than or equal to 2mm, for example, 0.5mm, 1mm, 1.5mm, 2mm, etc. In some embodiments, the distance H2 between the separator 210 and the negative electrode sheet 220 may also be greater than 2mm, for example, 2.1mm, and may be adjusted according to the specific design requirement of the battery, and is not limited to this embodiment.

As shown in fig. 6 and 8, in an embodiment of the present invention, an end of the rib 124 facing the electric core assembly 200 may have a chamfered structure, such as, but not limited to, an arc-shaped chamfer. Through the structure design, the utility model discloses can avoid protruding muscle 124 to damage diaphragm 210 isogenous electric core subassembly 200's component, guarantee the stability of battery, increase of service life.

As shown in fig. 6, 8 and 9, in an embodiment of the present invention, the first through hole 121 may be provided with two ribs 124 toward the one end aperture of the battery cell assembly 200, and the two ribs 124 may be respectively located at two sides of the second through hole 123 along the length direction of the battery, where the length direction of the battery may be understood as the length direction when the battery is a square-shell battery. Through the structure design, the utility model discloses can all restrict diaphragm 210 from the both sides of annotating the liquid in other words, avoid annotating the liquid formation time diaphragm 210 from one of them side by the suction, can further strengthen protruding muscle 124 in view of the above to diaphragm 210 block the effect, further avoid diaphragm 210 to be sucked in taking out the negative pressure technology and take out.

As shown in fig. 5 and 6, in an embodiment of the present invention, a first region of one side surface of the insulating member 120 facing the core assembly 200 may be provided with a protrusion 125. For example, there may be two first regions, which are two ends of one side surface of the insulating member 120 facing the cell assembly 200 in the length direction of the cell. On this basis, the end of the rib 124 facing the electric core assembly 200 may exceed the end of the protrusion 125 facing the electric core assembly 200, so that when the insulating member 120 abuts against the electric core assembly 200 via the protrusion 125, the rib 124 can still be ensured to extend into the electric core assembly 200.

The utility model discloses an in an embodiment, protruding muscle 124 can adopt circular arc chamfer structure towards the corner position of the one end of battery pack subassembly 200, causes diaphragm 210 damaged when avoiding protruding muscle 124 to push down diaphragm 210 from this.

In an embodiment of the present invention, the cover plate 110 and the insulating member 120 may be fixed by a fixing structure, such as a recess and a protrusion respectively disposed on the cover plate 100 and the insulating member 120. In some embodiments, the cover plate 110 and the insulating member 120 may be connected together by heat-melting posts, and the heat-melting posts may also be used in combination with the above-mentioned engaging and fixing structures, which is not limited to this embodiment.

It should be noted herein that the batteries shown in the drawings and described in the present specification are but a few examples of the many types of batteries that the principles of the present invention can be employed in. It should be clearly understood that the principles of the present invention are in no way limited to any details or any components of the battery shown in the drawings or described in the specification.

To sum up, the utility model provides a battery is including lapping subassembly 100, and lapping subassembly 100 is including lapping body 110 and insulating part 120, and lapping body 110 has been seted up and has been annotated liquid hole 111, and insulating part 120 has been seted up and has been annotated the first through-hole 121 that liquid hole 111 is linked together. Wherein, the first through hole 121 is provided with a rib 124 towards one end aperture of the electric core assembly 200, and the rib 124 protrudes towards the electric core assembly 200 and protrudes out of the first area. Through the structure design, the utility model discloses can utilize protruding muscle 124 to support the diaphragm 210 of electric core subassembly 200 in taking out negative pressure technology, avoid diaphragm 210 to be taken out by the suction and lead to just, the negative pole takes place the short circuit, guarantee to annotate going on smoothly of liquid ization one-tenth processing procedure.

Based on the above detailed description of several exemplary embodiments of the battery proposed by the present invention, an exemplary embodiment of the battery device proposed by the present invention will be described below.

In an embodiment of the present invention, the battery device includes the battery provided by the present invention and described in detail in the above-mentioned embodiment.

It should be noted herein that the battery devices illustrated in the drawings and described in the present specification are only a few examples of the many types of battery devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery device shown in the drawings or described in the present specification.

To sum up, the utility model provides a battery device, through adopting the utility model provides a battery can utilize protruding muscle to support the diaphragm of electric core subassembly in taking out the negative pressure technology, avoids the diaphragm to be taken out by the suction and leads to just, the negative pole takes place the short circuit, guarantees to annotate going on smoothly of liquid formation processing procedure.

Exemplary embodiments of a battery and a battery device according to the present invention are described and/or illustrated in detail above. Embodiments of the invention 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 step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "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. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

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

Claims

1. A battery is characterized by comprising a cover plate assembly and an electric core assembly, wherein the cover plate assembly comprises a cover plate body and an insulating piece, the insulating piece is arranged on one side surface of the cover plate body facing the electric core assembly, and a first area is arranged on one side surface of the insulating piece facing the electric core assembly and is abutted against the electric core assembly; the cover plate body is provided with a liquid injection hole, the insulating part is provided with a first through hole, the first through hole is communicated with the liquid injection hole, a convex rib is arranged at a hole opening at one end of the first through hole, and the convex rib extends towards the electric core assembly and protrudes out of the first area.

2. The battery according to claim 1, wherein a baffle is arranged at the position of the first through hole facing to the hole at one end of the cell assembly, and a second through hole is formed in the baffle and communicated with the first through hole.

3. The battery as claimed in claim 2, wherein a side surface of the lid body facing the insulator is provided with a boss at an orifice of the liquid injection hole, the boss is received in the first through hole, and an end of the boss facing the insulator has a gap with the baffle.

4. The battery of claim 3, wherein the baffle shields a portion of the aperture of the first through-hole such that the portion of the first through-hole not shielded by the baffle exposes the boss.

5. The battery according to claim 2, wherein the baffle is provided with two ribs, and the two ribs are respectively located on both sides of the second through hole in the length direction of the battery.

6. The cell defined in claim 1, wherein the rib extends into the cell assembly towards one end of the cell assembly.

7. The battery of claim 6, wherein the cell assembly comprises a separator, and the rib abuts against the separator toward one end of the cell assembly.

8. The battery of claim 6, wherein the cell assembly comprises a positive plate, a negative plate and a diaphragm, and the diaphragm is closer to the cover plate assembly than the negative plate along the relative arrangement direction of the cover plate assembly and the cell assembly; the length of the part of the convex rib extending into the battery cell assembly is smaller than or equal to the distance between the diaphragm and the negative pole piece.

9. The battery according to claim 8, wherein a distance between the separator and the negative electrode sheet in the opposing arrangement direction is less than or equal to 2mm.

10. The battery according to any one of claims 1 to 9, wherein the first region of the insulating member on the side surface facing the cell assembly is provided with a projection which abuts against the cell assembly; wherein, the one end of protruding muscle orientation electric core subassembly exceedes the bulge orientation electric core subassembly's one end.

11. A battery device comprising the battery according to any one of claims 1 to 10.