CN116706460B - End cover assembly, battery and battery pack - Google Patents
End cover assembly, battery and battery pack Download PDFInfo
- Publication number
- CN116706460B CN116706460B CN202310981291.6A CN202310981291A CN116706460B CN 116706460 B CN116706460 B CN 116706460B CN 202310981291 A CN202310981291 A CN 202310981291A CN 116706460 B CN116706460 B CN 116706460B
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- tear line
- battery
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- 239000004033 plastic Substances 0.000 claims abstract description 69
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000001788 irregular Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application discloses an end cover assembly, a battery and a battery pack, wherein upper plastic comprises a body and an easy-to-tear line, and a pole hole penetrating through the body is formed in the body; the easy tear line sets up on the body, and easy tear line's initiating terminal and end are located the edge of lateral wall and the body of body respectively, and easy tear line's tear strength is less than the tear strength of body, runs through on the body to be equipped with a plurality of by the radial of post hole inner wall along the post hole and keep away from the split part that the post hole extends, a plurality of split parts set up along the circumference interval of post hole. When the upper plastic provided by the application bears the external tearing force, the body can be broken from the easy-to-tear line, and the body broken from the easy-to-tear line is torn, so that the body can be separated from the pole, the body can be detached from the end cover plate for reuse, and the resource waste is reduced.
Description
Technical Field
The application relates to the technical field of batteries, in particular to an end cover assembly, a battery and a battery pack.
Background
The end cover assembly of the battery comprises an end cover plate and an upper plastic arranged on the end cover plate, wherein the end cover plate is provided with a mounting hole, the pole is arranged in the mounting hole and penetrates through the upper plastic, and the upper plastic is used for isolating the pole from the outside so as to prevent the pole from being short-circuited.
In the related art, the upper plastic is integrally molded on the peripheral wall of the pole, and the integrally molded upper plastic cannot be detached from the end cover plate for reuse when the battery is recovered, so that resource waste is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides the upper plastic, the end cover assembly, the battery and the battery pack, so that the upper plastic can be detached from the end cover plate for reuse, and the resource waste is reduced.
In order to solve the above technical problems, in a first aspect, the present application provides an upper plastic, comprising:
the body is provided with a pole hole penetrating through the body;
the easy-to-tear line is arranged on the body, the starting end and the ending end of the easy-to-tear line are respectively positioned on the side wall of the body and the inner wall of the pole hole, and the tearing strength of the easy-to-tear line is smaller than that of the body;
the body is provided with a plurality of split parts which extend from the inner wall of the pole hole along the radial direction of the pole hole and away from the pole hole in a penetrating manner, and the split parts are arranged at intervals along the circumferential direction of the pole hole.
In the application, because the starting end and the finishing end of the easy tear line are respectively positioned on the side wall of the body and the inner wall of the pole hole, the tearing strength of the easy tear line is smaller than that of the body, therefore, when the tearing external force is applied to the body, the body can be broken at the easy tear line, therefore, when the body broken from the easy tear line is detached from the end cover plate, only the external force is required to be applied, the body is plastically deformed, the opening of the broken part of the body is enlarged, the pole hole is separated from the pole, the body is detached from the end cover plate, compared with the prior art, the upper plastic is arranged into two detachable halves, although the recovery of the upper plastic is convenient, but the difficulty of the installation of the upper plastic on the end cover plate is improved, and compared with the prior art, the battery is recovered in a smashing mode, the crushed upper plastic is difficult to recover due to the plastic material of the upper plastic, so that the crushed plastic can be quickly detached from the end cover plate for reutilization, the resource waste can be reduced, and the recovery rate of the cover plate of the battery can be improved.
In addition, because easily tear the line and extend to the one side edge of body by the inner wall in utmost point post hole, consequently, the cracked body of line is easily torn still as a part to the quantity of part recovery has been reduced, the difficulty of plastic reuse on the recovery has also been reduced.
In addition, from this, through set up a plurality of divisions on the inner wall of utmost point post hole along the circumference of utmost point post hole, and a plurality of divisions extend along the radial direction of utmost point post hole and keep away from the utmost point post hole by utmost point post hole inner wall, on the one hand, when the cracked opening increase of easy tear line department, can avoid the inner wall of utmost point post hole to appear other irregular cracks, on the other hand, can be at the in-process that the body was taken out along the week wall of utmost point post for division opening grow, thereby make the pore wall length of utmost point post hole be close the length of body peripheral wall in order to form the bar structure, simultaneously, can also avoid tearing seriously because of the inner wall of utmost point post hole appears irregular crack and lead to other positions of body, and then influence the recovery effect of plastic.
In a possible implementation manner of the first aspect, the easy-to-tear line is provided with a plurality of holes penetrating along a thickness direction of the body, and the plurality of holes are arranged at intervals along an extending direction of the easy-to-tear line.
Because the easy-to-tear line includes a plurality of through holes along the thickness direction of body, consequently, can reduce the tearing strength of easy-to-tear line to when exerting the tearing power to the body, can do benefit to tearing the body from easy-to-tear line department. Through setting up a plurality of interval arrangement's hole, can guarantee the installation strength between body and the utmost point post when the body is installed on the end cover piece, can guarantee again that the body is broken from easily tearing line department when the battery is retrieved to make plastic recycle.
In a possible implementation manner of the first aspect, the hole near the pole hole penetrates through the pole hole to communicate, and/or the hole near the edge of the body penetrates through a side wall corresponding to the edge of the body.
Because the tear strength of the inner wall of the pole hole is smaller, in order to avoid the situation that irregular fracture occurs on the inner wall of the pole hole when the tearing force is applied to the body, the hole close to the pole hole is communicated with the pole hole, and therefore, the inner wall of the pole hole can be broken along the easy-tearing line when the tearing force is applied to the body, and the recovery effect of the body is guaranteed.
In a possible implementation manner of the first aspect, the body includes a circular first portion and a second portion, the second portion is disposed along a radial direction of the first portion and protrudes from a side wall of the first portion, the easy-to-tear line extends along a radial direction of the first portion, and a start end of the easy-to-tear line is located at a junction of the side wall of the first portion and the side wall of the second portion.
Because the second part sets up in the lateral wall of first part along the radial direction protrusion of first part, and the starting end of easy tear line is located the juncture of the lateral wall of first part and the lateral wall of second part, on the one hand, when exerting the tearing force to the body, the second part can increase the area of contact who snatchs the body to reduced the degree of difficulty of exerting the tearing force to the body, on the other hand, through making easy tear line be close to the setting of second part, can be when exerting the tearing force to the second part, can guarantee to act on the tearing force of easy tear line department great, thereby more be favorable to tearing the body from easy tear line department.
In a possible implementation manner of the first aspect, the second portion is provided with a hollowed-out hole.
Through setting up the fretwork hole, on the one hand, the fretwork hole can be used as auxiliary hole, and specifically, when tearing the power to the body, because the volume of body and second part is less, is unfavorable for snatching, consequently, can set up the auxiliary rod in the fretwork hole, through tearing the power with acting on the second part to the auxiliary rod is exerted to the tearing power to reduce and made the body from easily tearing the cracked degree of line department, on the other hand, the shape in order to regard as the sign of accessible change fretwork hole.
In a possible implementation manner of the first aspect, the hollowed-out hole is in a shape of a line or a cross.
When the hollowed-out hole is in a straight shape, the upper plastic is described as the negative pole upper plastic and is used for being matched with the negative pole post, and when the hollowed-out hole is in a cross shape, the upper plastic is described as the positive pole upper plastic and is used for being matched with the positive pole post. Therefore, besides being used as an auxiliary hole, the hollowed-out hole can be used for marking positive and negative electrodes of plastic on the sign, and has various functions.
In a possible implementation manner of the first aspect, the width of the split portion decreases in a direction radial to and away from the pole hole.
The width of the split part is gradually reduced in the radial direction of the pole hole and in the direction away from the pole hole, so that the deformation of the body can be facilitated in the process of extracting the body from the peripheral wall of the pole.
In a possible implementation manner of the first aspect, the tear line is staggered from the split portion.
If the easy tear line coincides with any split part, because easy tear line coincides with the split part to shorten the length of easy tear line, consequently, in the normal use of last plastic, make easy the break off along easy tear line department of going up, thereby influence the performance of battery or make the battery inefficacy, based on this, make easy tear line stagger with the split part, so, can avoid the battery to make the plastic break along easy tear line department in the in-process of using, thereby guaranteed the stability of battery performance.
In a possible implementation manner of the first aspect, a protective film is disposed on the body, and the protective film is used for covering the splitting part.
Therefore, chips can be prevented from entering the notch through the splitting part, so that the condition that the pole is short-circuited is avoided.
In a second aspect, the present application also provides an end cap assembly comprising:
an end cover plate, wherein the end cover plate is provided with a mounting hole;
the upper plastic of any one of the first aspects, the upper plastic layer being disposed on the end cap piece with the post hole in the upper plastic being coaxial with the mounting hole;
the pole is sequentially arranged in the mounting hole and the pole hole in a penetrating mode and is clamped with the pole hole.
Because the end cover assembly in the second aspect comprises the upper plastic in the first aspect, the upper plastic can be quickly detached from the end cover sheet when the battery is recovered, so that the recovery efficiency of the end cover assembly is improved.
In a third aspect, the present application also provides a battery comprising:
a housing including a receiving cavity having an opening;
an electrode assembly mounted in the receiving chamber;
the end cap assembly of the second aspect, the end cap assembly covering the opening.
Since the battery of the third aspect includes the end cap assembly of the second aspect, and the upper plastic in the end cap assembly can be detached from the end cap sheet upon recovery of the battery, the recovery rate of the battery is improved.
In a fourth aspect, the present application also provides a battery pack comprising at least one battery according to the third aspect.
Since the battery pack in the fourth aspect includes the battery in the third aspect, the recovery rate of the battery pack is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of the present application;
FIG. 2 is a schematic diagram of a structure of the upper plastic in a bar-shaped structure;
FIG. 3 is a schematic view of an embodiment of the present application with an upper plastic mounted on an end cap sheet;
FIG. 4 is an enlarged partial schematic view of FIG. 1 at A;
FIG. 5 is an enlarged partial schematic view at B in FIG. 1;
FIG. 6 is a schematic view of another view angle of the upper plastic according to the embodiment of the present application;
fig. 7 is a schematic structural diagram of a hollow hole on an upper plastic body in a straight shape according to an embodiment of the present application;
FIG. 8 is an enlarged partial schematic view of FIG. 6 at C;
FIG. 9 is a partial exploded view of an end cap assembly provided in accordance with an embodiment of the present application;
fig. 10 is a schematic structural view of a battery according to an embodiment of the present application;
fig. 11 is a schematic structural view of a battery pack according to an embodiment of the present application.
Reference numerals illustrate:
100-plastic feeding; 110-body; 111-pole holes; 112-split; 110 a-a first part; 110 b-a second part; 120-an easy-to-tear line; 121-holes; 131-hollowed holes.
200-an end cap assembly; 210-end cover piece; 220-pole;
300-cell; 310-a housing; 320-electrode assembly;
400-battery pack.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
As described in the background art of the present application, in the related art, the upper plastic is integrally molded on the outer peripheral wall of the pole, and the integrally molded upper plastic cannot be detached from the end cover plate for reuse when the battery is recovered, thereby causing resource waste.
In order to solve the technical problems mentioned in the background art, the application provides an end cover assembly, a battery and a battery pack, wherein an easy-to-tear line is arranged on an upper plastic body, the easy-to-tear line extends from the inner wall of a pole hole to one side edge of the body, and the tearing strength of the easy-to-tear line is smaller than that of the body.
The application is illustrated in detail below by means of specific examples:
referring to fig. 1, 2 and 3, an embodiment of the present application provides an upper plastic 100, wherein the upper plastic 100 includes a body 110, a tear line 120 and a split portion 112, wherein a post hole 111 penetrating the body 110 is disposed on the body 110; the easy tear line 120 is disposed on the body 110, the starting end and the ending end of the easy tear line 120 are respectively located on the side wall of the body 110 and the inner wall of the pole hole 111, the tearing strength of the easy tear line 120 is smaller than that of the body 110, the plurality of splitting parts 112 penetrate through the body 110, the plurality of splitting parts 112 extend from the inner wall of the pole hole 111 along the radial direction of the pole hole and away from the pole hole 111, and the plurality of splitting parts 112 are arranged along the circumferential interval of the pole hole 111.
Note that, the body 110 may have a square structure or a circular structure, and the body 110 is generally a sheet-like structure or a block-like structure, and when the body 110 has a sheet-like structure, the axial direction of the pole hole 111 coincides with the thickness direction of the body 110. The tear strength refers to the ability of the easy-to-tear line 120 or the body 110 to resist plastic deformation and fracture when subjected to the external force, and since the tear strength of the easy-to-tear line 120 is smaller than that of the body 110, the ability of the easy-to-tear line 120 to resist plastic deformation is worse and is easy to fracture when the external force is applied.
In this embodiment, since the starting end and the ending end of the easy-to-tear line 120 are located on the side wall of the body 110 and the inner wall of the pole hole 111 respectively, the tearing strength of the easy-to-tear line 120 is smaller than that of the body 110, so when the tearing external force is applied to the body 110, the body 110 can be broken at the easy-to-tear line 120, and therefore, when the body 110 broken from the easy-to-tear line 120 is detached from the end cover 210, only the external force is applied, the body 110 can be plastically deformed, the opening at the broken position of the body 110 becomes larger, so that the pole hole 111 is separated from the pole 220, and the body 110 is detached from the end cover 210.
In addition, since the starting end and the ending end of the easy-to-tear line 120 are located on the side wall of the body 110 and the inner wall of the pole hole 111 respectively, the body 110 broken along the easy-to-tear line 120 is still a component, so that the number of components recovered is reduced, and the difficulty of reusing the recovered upper plastic 100 is also reduced.
In addition, through set up a plurality of splits 112 on the inner wall of utmost point post hole 111 along the circumference of utmost point post hole 111, and a plurality of splits 112 run through body 110 along the axial of utmost point post hole 111, and split 112 extends along the radial direction of utmost point post hole 111 to the direction of keeping away from utmost point post hole 111, on the one hand, when the cracked opening in easy tear line 120 department increases, can avoid the inner wall of utmost point post hole 111 to appear other irregular cracks, on the other hand, can be at the in-process that body 110 was taken out along the week wall of utmost point post 220 for split 112 opening grow, thereby make the pore wall length of utmost point post hole 111 be close the length of body 110 periphery wall in order to form the bar structure, simultaneously, can also avoid causing other positions of body 110 to tear seriously because of the irregular crack appears in the inner wall of utmost point post hole 111, and then influence the recovery effect of plastic 100.
The plurality of split portions 112 refers to three or more split portions 112. The circumferential direction of the pole hole 111 is the direction indicated by the Z arrow in fig. 6, and the axial direction of the pole hole 111 is the direction indicated by the Y arrow in fig. 7.
In practical application, when the battery is recovered, a tearing force is applied to the body 110 of the upper plastic 100, so that the body 110 is broken from the easy-to-tear line 120, and then a pulling force is applied to the broken body 110, so that the broken portion of the body 110 is drawn out along the peripheral wall of the pole 220, and the body 110 is detached from the end cap piece 210.
There are various ways of realizing that the tearing strength of the easy-to-tear line 120 is smaller than that of the body 110, and in one possible embodiment, referring to fig. 1 and fig. 4, a plurality of holes 121 penetrating along the thickness direction of the body 110 are provided on the easy-to-tear line 120, and the plurality of holes 121 are arranged at intervals along the extending direction of the easy-to-tear line 120.
Because the easy-to-tear line 120 is provided with a plurality of holes 121 penetrating along the thickness direction of the body 110, the tearing strength of the easy-to-tear line 120 can be reduced, so that when the tearing force is applied to the body 110, the body 110 can be easily torn from the easy-to-tear line 120. Through setting up a plurality of interval arrangement's hole 121, can guarantee the installation intensity between body 110 and the utmost point post 220 when body 110 installs on end cover piece 210, can guarantee again that body 110 is broken from easily tearing line 120 when the battery is retrieved to make the plastic 100 recycle.
In addition, the plurality of holes 121 refers to three or more holes 121, and the holes 121 may be through holes penetrating the body 110, or may be blind holes partially penetrating the body 110, and those skilled in the art may set up the holes correspondingly according to practical situations, for example, a plurality of holes 121 penetrating the body 110 are punched on the easy-to-tear line 120 along the extending direction of the easy-to-tear line 120 by using laser.
In addition, the extending direction of the tear line 120 refers to the direction indicated by the arrow X in fig. 1, and the extending directions of the tear line 120 mentioned below refer to the directions indicated by the arrow X.
In other embodiments, the tear strength of the easy-to-tear line 120 is smaller than that of the body 110 by extruding the easy-to-tear line 120 along the extending direction of the easy-to-tear line 120, so that the thickness of the easy-to-tear line 120 is smaller than that of the body 110.
In some possible embodiments, referring to fig. 5, the hole 121 near the post hole 111 penetrates the wall of the post hole 111 and/or the hole 121 near the edge of the body 110 penetrates the corresponding sidewall of the edge of the body 110.
Because the tearing strength of the inner wall of the pole hole 111 is smaller, in order to avoid the situation that irregular fracture occurs on the inner wall of the pole hole 111 when the tearing force is applied to the body 110, the hole 121 close to the pole hole 111 is communicated with the pole hole 111, and therefore, when the tearing force is applied to the body 110, the inner wall of the pole hole 111 can be broken along the easy-tearing line 120, and the recycling effect of the body 110 is ensured.
In addition, since the hole 121 near the edge of the body 110 penetrates the sidewall corresponding to the edge of the body 110, the tearing of the body 110 along the easy-to-tear line 120 can be facilitated, and the convenience of tearing the body 110 is improved.
In some possible embodiments, referring to fig. 6, the body 110 includes a circular first portion 110a and a second portion 110b, the second portion 110b is disposed on a sidewall of the first portion 110a along a radial direction of the first portion 110a (i.e. a direction indicated by an arrow x1 in fig. 6), the tear line 120 extends along the radial direction of the first portion 110a, and a start end of the tear line 120 is located at an interface between the sidewall of the first portion 110a and the sidewall of the second portion 110 b.
Because the second portion 110b protrudes along the radius direction of the first portion 110a and is disposed on the side wall of the first portion 110a, and the start end of the easy-to-tear line 120 is located at the junction between the side wall of the first portion 110a and the side wall of the second portion 110b, on one hand, when a tearing force is applied to the body 110, the second portion 110b can increase the contact area of the gripping body 110, so that the difficulty of applying the tearing force to the body 110 is reduced, and on the other hand, by making the easy-to-tear line 120 close to the second portion 110b, when a tearing force is applied to the second portion 110b, the tearing force acting on the easy-to-tear line 120 can be ensured to be larger, so that the body 110 is more favorable to be torn from the easy-to-tear line 120.
In addition, the second portion 110b is integrally formed with the body 110 in the present embodiment, so as to increase the connection strength between the second portion 110b and the body 110.
In some possible embodiments, referring to fig. 6, the second portion 110b is provided with a hollowed-out hole 131.
The axial direction of the hollow hole 131 is parallel to the axial direction of the post hole 111.
Through setting up fretwork hole 131, on the one hand, fretwork hole 131 can regard as auxiliary hole to use, specifically, when applying the tearing force to body 110, because the volume of body 110 and second part 110b is less, be unfavorable for snatching, consequently, can set up the auxiliary rod in fretwork hole 131, through apply the tearing force to the auxiliary rod in order to act on second part 110b, thereby reduced the cracked degree of difficulty of messenger's body 110 follow easy tear line 120, on the other hand, the shape of accessible change fretwork hole 131 is regard as the sign, for example, fretwork hole 131 can regard as the sign such as last plastic 100 model, size, electrode, mainly regard as the electrode sign to explain in detail below.
In some possible embodiments, referring to fig. 6 and 7, the hollowed-out hole 131 is in a shape of a straight line or a cross.
When the hollow hole 131 is in a straight shape, the upper plastic 100 is illustrated as the negative electrode upper plastic 100 for being matched with the negative electrode post 220, and when the hollow hole 131 is in a cross shape, the upper plastic 100 is illustrated as the positive electrode upper plastic 100 for being matched with the positive electrode post 220. It can be seen that the hollowed-out hole 131 can be used for marking the positive and negative electrodes of the upper plastic 100 besides being used as an auxiliary hole, and has various functions.
In some possible embodiments, referring to fig. 8, the width of the split 112 decreases in a direction radial to the pole bore 111 and away from the pole bore 111.
The radial direction of the pole hole 111 and the direction away from the pole hole 111 are directions indicated by an arrow x1 in fig. 8.
Since the width of the split portion 112 decreases in the radial direction of the pole hole 111 and in the direction away from the pole hole 111, deformation of the body 110 can be facilitated in the process of extracting the body 110 from the peripheral wall of the pole 220, for example, when the body 110 has a circular structure, the broken body 110 can be straightened into a bar-shaped structure in the process of extracting the body 110 from the peripheral wall of the pole 220, so as to facilitate the detachment of the body 110 from the end cap piece 210.
In some possible embodiments, referring to fig. 8, the frangible line 120 is offset from the split 112.
If the easy tearing line 120 is overlapped with any splitting part 112, the length of the easy tearing line 120 is shortened due to the overlapping of the easy tearing line 120 and the splitting part 112, so that the upper plastic 100 is easily broken along the easy tearing line 120 in the normal use process of the upper plastic 100, the performance of a battery is affected or the battery is disabled, and based on the broken line, the easy tearing line 120 and the splitting part 112 are staggered, so that the breakage of the upper plastic 100 along the easy tearing line 120 in the use process of the battery can be avoided, and the stability of the performance of the battery is ensured.
In some possible embodiments, the body 110 is provided with a protective film covering the split 112.
Thus, by covering the split portion 112 with the protective film, it is possible to prevent the debris from entering the split portion 112 through the split portion 112, thereby preventing the occurrence of a short circuit of the pole 220 due to the entry of the debris into the split portion 112.
Referring to fig. 9, the embodiment of the present application further provides an end cap assembly 200, where the end cap assembly 200 includes an end cap piece 210, an upper plastic 100 and a pole 220, and the end cap piece 210 is provided with a mounting hole; the upper plastic 100 is stacked on the end cover 210, and the pole hole 111 in the upper plastic 100 is coaxial with the mounting hole, and the pole 220 sequentially penetrates through the mounting hole and the pole hole 111 and is clamped with the pole hole 111.
The upper plastic 100 in the embodiment of the present application may have the same structure as any one of the upper plastic 100 in the above embodiment, and may bring about the same or similar beneficial effects, and specifically, reference may be made to the description in the above embodiment, which is not repeated herein.
In addition, the hole diameter of the pole hole 111 is smaller than the hole diameter of the mounting hole and is the same as the diameter of the pole 220, and thus the inner pole 220 mounted in the mounting hole can be fixed by the upper plastic 100 while also insulating the pole 220.
In addition, since the upper plastic 100 in the above embodiment is included in the end cap assembly 200 in the present embodiment, the upper plastic 100 can be quickly detached from the end cap sheet 210 when the battery is recovered, thereby improving the recovery efficiency of the end cap assembly 200.
It should be noted that, the end cap assembly 200 may be applied to a cylindrical battery or a prismatic battery.
Referring to fig. 10, the embodiment of the present application also provides a battery 300, the battery 300 including a case 310, an electrode assembly 320, and an end cap assembly 200, wherein the case 310 includes a receiving chamber having an opening; the electrode assembly 320 is installed in the receiving chamber; the end cap assembly 200 is capped and opened.
Wherein the electrode assembly 320 is a battery cell formed by winding or laminating a separator, a positive electrode current collector, and a negative electrode current collector. The battery 300 may be a lithium battery, a power battery, or the like.
Since the battery 300 of the present embodiment includes the end cap assembly 200 of the above embodiment, and the upper plastic 100 of the end cap assembly 200 can be detached from the end cap sheet 210 when the battery 300 is recovered, the recovery rate of the battery 300 is improved.
The embodiment of the present application also provides a battery pack 400, and the battery pack 400 includes at least one battery 300 according to the above embodiment.
Since the battery pack 400 in the present embodiment includes the battery 300 in the above-described embodiment, the recovery rate of the battery pack 400 is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. An end cap assembly, comprising:
an end cover plate (210), wherein a mounting hole is formed in the end cover plate (210);
the plastic rubber (100) is arranged on the end cover sheet (210) in a stacked mode, the plastic rubber (100) comprises a body (110), a tearing line (120) and a plurality of splitting parts (112), a pole hole (111) penetrating through the body (110) is formed in the body (110), the pole hole (111) is coaxial with the mounting hole, the tearing line (120) is arranged on the body (110), a starting end and an ending end of the tearing line (120) are respectively located on the side wall of the body (110) and the inner wall of the pole hole (111), the tearing strength of the tearing line (120) is smaller than that of the body (110), a plurality of splitting parts (112) penetrate through the body (110), the inner walls of the splitting parts (112) are all extended along the radius direction of the pole hole and away from the pole hole (111), and the splitting parts (112) are arranged at intervals along the circumference of the pole hole (111);
the pole column (220) sequentially penetrates through the mounting hole and the pole column hole (111) and is clamped with the pole column hole (111);
the body (110) comprises a circular first part (110 a) and a second part (110 b), the second part (110 b) is arranged on the side wall of the first part (110 a) in a protruding mode in the radial direction of the first part (110 a), the easy-tearing line (120) extends in the radial direction of the first part (110 a), and the starting end of the easy-tearing line (120) is located at the junction of the side wall of the first part (110 a) and the side wall of the second part (110 b).
2. The end cover assembly according to claim 1, wherein the easy tear line (120) is provided with a plurality of holes (121) penetrating in a thickness direction of the body (110), and the plurality of holes (121) are arranged at intervals along an extending direction of the easy tear line (120).
3. End cap assembly according to claim 2, wherein the hole (121) near the post hole (111) penetrates the hole wall of the post hole (111) and/or the hole (121) near the edge of the body (110) penetrates the corresponding side wall of the edge of the body (110).
4. An end cap assembly according to claim 3, wherein the second portion (110 b) is provided with a hollowed-out hole (131), the hollowed-out hole (131) being in a straight or cross shape.
5. The end cap assembly according to claim 1, wherein the width of the split portion (112) decreases in a radial direction of the pole bore (111) and away from the pole bore (111).
6. The end cap assembly of claim 1, wherein the frangible line (120) is offset from the split (112).
7. The end cap assembly of claim 6, wherein a protective film is provided on the body (110) for covering the split portion (112).
8. A battery, comprising:
-a housing (310), the housing (310) comprising a receiving cavity having an opening;
an electrode assembly (320), the electrode assembly (320) being mounted within the receiving chamber;
the end cap assembly (200) of any of claims 1-7, said end cap assembly (200) covering said opening.
9. A battery pack comprising at least one battery (300) according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310981291.6A CN116706460B (en) | 2023-08-07 | 2023-08-07 | End cover assembly, battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310981291.6A CN116706460B (en) | 2023-08-07 | 2023-08-07 | End cover assembly, battery and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116706460A CN116706460A (en) | 2023-09-05 |
| CN116706460B true CN116706460B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310981291.6A Active CN116706460B (en) | 2023-08-07 | 2023-08-07 | End cover assembly, battery and battery pack |
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| CN216450730U (en) * | 2021-10-18 | 2022-05-06 | 厦门海辰新能源科技有限公司 | Top cover assembly and battery |
| CN217611370U (en) * | 2022-03-29 | 2022-10-21 | 北京大学第三医院（北京大学第三临床医学院） | Auxiliary material for electric excision scope |
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| JP2001146263A (en) * | 1999-11-18 | 2001-05-29 | Okada Shigyo Kk | Package |
| CN105531194A (en) * | 2013-05-17 | 2016-04-27 | 格里夫国际控股公司 | Container closure with retractable pouring spout |
| CN109275453A (en) * | 2018-11-28 | 2019-01-29 | 南京林业大学 | A kind of Seedling bag and device for raising seedlings |
| CN210403785U (en) * | 2019-09-09 | 2020-04-24 | 惠安永恒机械有限公司 | Storage battery convenient to assemble |
| CN216450730U (en) * | 2021-10-18 | 2022-05-06 | 厦门海辰新能源科技有限公司 | Top cover assembly and battery |
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| CN116706460A (en) | 2023-09-05 |
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Address after: Room 501, R&D Building, No. 2 Sany Yundu, No. 6 Lanqing Second Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Patentee after: Shenzhen Haichen Energy Storage Technology Co.,Ltd. Country or region after: China Patentee after: Xiamen Haichen Energy Storage Technology Co.,Ltd. Address before: Room 501, R&D Building, No. 2 Sany Yundu, No. 6 Lanqing Second Road, Luhu Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Patentee before: Shenzhen Haichen Energy Storage Control Technology Co.,Ltd. Country or region before: China Patentee before: Xiamen Haichen Energy Storage Technology Co.,Ltd. |