CN212366148U - Plastic structure and battery under battery top cap - Google Patents

Plastic structure and battery under battery top cap Download PDF

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Publication number
CN212366148U
CN212366148U CN202020800612.XU CN202020800612U CN212366148U CN 212366148 U CN212366148 U CN 212366148U CN 202020800612 U CN202020800612 U CN 202020800612U CN 212366148 U CN212366148 U CN 212366148U
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China
Prior art keywords
top cap
battery
convex
plastic structure
convex closure
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CN202020800612.XU
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Chinese (zh)
Inventor
李勇军
邹武元
姜斌
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Jiangsu Zenio New Energy Battery Technologies Co Ltd
Original Assignee
Dongguan Tafel New Energy Technology Co Ltd
Jiangsu Tafel New Energy Technology Co Ltd
Jiangsu Tafel Power System Co Ltd
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Application filed by Dongguan Tafel New Energy Technology Co Ltd, Jiangsu Tafel New Energy Technology Co Ltd, Jiangsu Tafel Power System Co Ltd filed Critical Dongguan Tafel New Energy Technology Co Ltd
Priority to CN202020800612.XU priority Critical patent/CN212366148U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The utility model belongs to the technical field of the battery production is made, concretely relates to plastic structure and battery under battery top cap, including lower plastic body (1), the bottom of lower plastic body (1) is provided with convex closure (2), convex closure (2) are provided with prevents scraping portion (3). The utility model discloses can prevent to scratch naked electric core barrier film and damage the pole piece, help improving the security performance of electric core.

Description

Plastic structure and battery under battery top cap
Technical Field
The utility model belongs to the technical field of the battery production is made, concretely relates to plastic structure, battery top cap and battery under battery top cap.
Background
Nowadays, with the development of modern society and the enhancement of environmental awareness of people, more and more devices select a lithium battery as a power supply, such as a mobile phone, a notebook computer, an electric tool, an electric automobile and the like, which provides a wide space for the application and development of the lithium battery. Among them, lithium batteries used in electric tools, electric vehicles, and the like are generally called power batteries. The plastic convex hull structure under the top cap is widely used in the top cap setting of the power battery all the time, and under the normal condition, the structure of the top bracket cover is cancelled.
However, the inventors have found that this solution has at least the following drawbacks: because the structure of cancellation top support lid, naked electric core is all buckled perpendicularly and is tied up in top cap below from top cap both sides limit, very easily scratches naked electric core barrier film and damages the pole piece, causes the electric core to be short or even scrap.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: to prior art's not enough, provide a plastic structure under battery top cap, can prevent to scrape naked electric core barrier film and damage the pole piece, help improving the security performance of electric core.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a plastic structure under battery top cap, includes plastic body down, the bottom of plastic body is provided with the convex closure down, the convex closure is provided with prevents scraping the portion.
As an improvement of a plastic structure under battery top cap, the convex closure includes first convex closure, first convex closure sets up the lateral part of plastic body down, prevent that the portion of scraping sets up the tip of first convex closure.
As an improvement of a plastic structure under battery top cap, prevent scraping the portion include the rake and with the arc portion that the rake is connected.
As an improvement of a plastic structure under battery top cap, the scraping-proof part is an inclined part or an arc-shaped part.
As a plastic structure's under battery top cap improvement, the switching piece is installed to the bottom of plastic body down, first convex closure be provided with switching piece complex breach.
As an improvement of a plastic structure under battery top cap, the convex closure includes the second convex closure, the second convex closure is followed at least one side of lower plastic body is formed with protruding edge.
As an improvement of a plastic structure under battery top cap, the second convex closure with protruding edge is the integrated into one piece structure.
As a plastic structure's under battery top cap improvement, plastic structure still includes the top cap piece under the battery top cap, the top cap piece is provided with at least one in annotating liquid hole and the explosion-proof valve opening, the protruding closure correspondence of second set up in annotate the liquid hole and/or the bottom of explosion-proof valve opening.
As an improvement of a plastic structure under battery top cap, the bottom of second convex closure be provided with annotate the liquid hole and/or the bleeder vent that explosion-proof valve hole matches.
A second object of the present invention is to provide a battery, including electric core and as above-mentioned plastic structure under the battery top cap, electric core top surface with contact total area between the convex closure with the ratio of total area of electric core top surface is 0.05 ~ 0.24.
The beneficial effects of the utility model reside in that, the utility model discloses a lower plastic body, the bottom of lower plastic body is provided with the convex closure, the convex closure is provided with prevents scraping the portion. Because the structure of a top bracket cover is cancelled, but bare cells are bent from two side edges of the top cover and vertically bound below the top cover, and are very easy to scratch bare cell isolating membranes to damage pole pieces, so that the cells are short or even scrapped, therefore, the scratch-proof parts 3 are arranged on the convex hulls, and the scratch-proof parts 3 adopt smooth transition, so that the situation that the pole pieces are damaged due to scratch when the cells 6 are bound below the top cover and the lower plastic body 1 is avoided in the process that the cells 6 are bent from two side edges of the top cover; wherein, lower plastic body 1 can be made by the plastic, plays insulating top cap and electric core 6's effect, and lower plastic body 1 and convex closure 2 are the integrated into one piece structure, and simultaneously, in order to guarantee the electric connection of utmost point ear and utmost point post, leave the clearance between electric core 6 and the lower plastic body 1 usually, when secondary battery vibrations or falls, the convex closure 2 of the both sides of lower plastic body 1 can avoid electric core drunkenness from top to bottom, reduces the probability of electric core 6 short circuit in taking place. The utility model discloses can prevent to scratch naked electric core barrier film and damage the pole piece, help improving the security performance of electric core.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the first embodiment of the present invention after the adaptor plate is installed.
Fig. 3 is an exploded view of the first embodiment of the present invention.
Fig. 4 is a schematic bottom view of the first embodiment of the present invention.
Fig. 5 is a schematic bottom view of a second embodiment of the present invention.
Fig. 6 is a schematic bottom view of a third embodiment of the present invention.
Fig. 7 is a schematic structural view of a battery according to a fourth embodiment of the present invention after being expanded.
Fig. 8 is a schematic structural view of a battery according to a fourth embodiment of the present invention after assembly.
Fig. 9 is an enlarged view of fig. 8 at a.
Wherein: 1-lower the plastic body; 2-convex hull; 3-a scratch-resistant part; 21-first convex hull; 22-second convex hull; 213-notch; 221-convex edge; 222-air holes; 31-an inclined portion; 32-an arc; 4-a patch; 5-top cover sheet; 51-liquid injection hole; 52-explosion-proof valve hole; 6-electric core.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to fig. 1 to 9, but the present invention is not limited thereto.
First embodiment
The utility model provides a plastic structure under battery top cap, includes plastic body 1 down, and the bottom of lower plastic body 1 is provided with convex closure 2, and convex closure 2 is provided with prevents scraping portion 3. Because the structure of a top bracket cover is cancelled, but bare cells are bent from two side edges of the top cover and vertically bound below the top cover, and are very easy to scratch bare cell isolating membranes to damage pole pieces, so that the cells are short or even scrapped, therefore, the scratch-proof parts 3 are arranged on the convex hulls, and the scratch-proof parts 3 adopt smooth transition, so that the situation that the pole pieces are damaged due to scratch when the cells 6 are bound below the top cover and the lower plastic body 1 is avoided in the process that the cells 6 are bent from two side edges of the top cover; wherein, lower plastic body 1 can be made by the plastic, plays insulating top cap and electric core 6's effect, and lower plastic body 1 and convex closure 2 are the integrated into one piece structure, and simultaneously, in order to guarantee the electric connection of utmost point ear and utmost point post, leave the clearance between electric core 6 and the lower plastic body 1 usually, when secondary battery vibrations or falls, the convex closure 2 of the both sides of lower plastic body 1 can avoid electric core drunkenness from top to bottom, reduces the probability of electric core 6 short circuit in taking place.
However, the utility model discloses not so as limit, the quantity of convex closure 2 can be adjusted according to actual battery structure, if, one of them one side of lower plastic body 1 has convex closure 2, the opposite side of lower plastic body 1 does not have convex closure 2, can also be, the both sides of lower plastic body 1 all have convex closure 2, can also set up a plurality of convex closures 2 between two convex closures 2, can carry out one step and avoid electric core drunkenness from top to bottom, in addition, prevent scraping portion 3 and not limit to set up on whole convex closure 2, prevent scraping portion 3 and can set up at partial convex closure 2, prevent scraping portion 3 and also not limit to set up at the both ends of convex closure 2, can also set up the one end at convex closure 2 alone, it can only to need to satisfy electric core from top cap both sides smooth and smooth transition when buckling.
Preferably, the convex hull 2 comprises a first convex hull 21, the first convex hull 21 is arranged at the side part of the lower plastic body 1, and the scratch-proof part 3 is arranged at the end part of the first convex hull 21. In this embodiment, the both sides of lower plastic body 1 all are provided with first convex closure 21, prevent scraping portion 3 and set up the both ends at first convex closure 21, nevertheless the utility model discloses not so limit, the quantity of first convex closure 21 can be adjusted according to actual battery structure, in addition, prevent scraping portion 3 and do not restrict the setting on whole first convex closure 21, prevent scraping portion 3 and can set up at partial first convex closure 21, prevent scraping portion 3 and also do not restrict the both ends that set up at first convex closure 21, can also set up the one end at first convex closure 21 alone, only need satisfy electric core from top cap both sides when limit buckle smooth and smooth transition can.
Preferably, the scratch prevention part 3 includes an inclined part 31 and an arc part 32 connected to the inclined part 31. Increase rake 31, reserve the space that electric core 6 buckled from top cap both sides limit, make electric core 6 from top cap both sides limit buckling process more smooth and easy, help improving production efficiency, simultaneously, rake 31 is connected with arc portion 32, reduces the probability that naked electric core 6 barrier film was scraped to first convex closure 21 and damaged the pole piece.
Preferably, the adaptor 4 is installed at the bottom of the lower plastic body 1, and the first convex hull 21 is provided with a notch 213 matched with the adaptor 4. Because first convex closure 21 invades the space of plastic body 1 under the part, it is not enough to lead to utmost point post bottom assembly part or and laser fixture space, produce the welding slag, and can't form a sealed chamber, the welding slag can splash and fall into electric core during the welding, if the assembly part carries out the incision, still can influence welding dimension and overflow area, breach 213 is used for accomodating utmost point post bottom assembly part, for example, the welding, improve the overwelding area and anchor clamps space, breach 213 sets up the one side of assembling in utmost point post bottom, avoid the assembly part incision to influence welding dimension and overflow area, also adopt between second convex closure 22 and the adaptor piece 4 and dodge the structure, help increasing the contact total area between electric core 6 top surface and the first convex closure 21, improve the space utilization of plastic body 1 bottom down.
Preferably, the convex hull 2 comprises a second convex hull 22, and the second convex hull 22 is formed with convex edges 221 along four sides of the lower plastic body 1. The convex edge 221 is formed along the four sides of the lower plastic body 1 of the second convex hull 22, the total contact area between the top surface of the battery cell 6 and the convex hull 2 can be increased, the battery is prevented from vibrating or falling, the top surface of the battery cell 6 is under large pressure, and the second convex hull 22 plays a role in dispersing vibration or falling pressure, so that the stable electric connection of the tab and the pole is ensured, and the service life of the battery is prolonged.
Preferably, the second convex hull 22 and the convex edge 221 are of an integrally formed structure. The second convex hull 22 and the convex edge 221 adopt an integrally formed structure, so that the difficulty of the production process is reduced, the integral mechanical strength of the lower plastic can be improved, and the service life of the lower plastic is prolonged.
Preferably, the plastic structure under the battery top cover further comprises a top cover plate 5, the top cover plate 5 is provided with a liquid injection hole 51 and an explosion-proof valve hole 52, and the second convex hull 22 is correspondingly arranged at the bottoms of the liquid injection hole 51 and the explosion-proof valve hole 52. The second convex hull 22 is correspondingly arranged at the bottom of the liquid injection hole 51, so that the risk that the sealing nail falls into the battery cell 6 can be reduced; the second convex closure 22 corresponds and sets up in the bottom of explosion-proof valve opening 52, can reduce the risk that explosion-proof valve falls into electric core 6, and in this embodiment, the bottom of annotating liquid hole 51 and explosion-proof valve opening 52 is located to the cover of second convex closure 22 integral type, nevertheless the utility model discloses not regard as this as the limit, second convex closure 22 can also fall into two parts, and the bottom of annotating liquid hole 51 is located to some independent cover, and the bottom of explosion-proof valve opening 52 is located to another part independent cover, ensures that the function of annotating liquid hole 51 and explosion-proof valve can normally be realized.
Preferably, lower plastic body 1 is provided with two utmost point post through holes, one of them utmost point post through hole sets up around the bottom of first utmost point post, inlay in top cap bottom recess at the top of another utmost point post through hole, because the second utmost point post need with top cap piece 5 between the insulating connection, consequently adopt the insulating lateral part that surrounds the second utmost point post of plastic body 1 down, edge through utmost point post through hole is upwards protruding, cooperation top cap bottom recess, the realization inlays the utmost point post through hole that the second utmost point post corresponds in top cap bottom recess, still saved other insulating parts of top installation of plastic body 1 down, help saving the part of top cap, help reducing the manufacturing cost of top cap.
Preferably, the top of a post through hole of the lower plastic body 1 forms an extension part along the inner wall of a post mounting hole of the top cover plate 5, because after the post mounting hole is processed and formed on the top cover plate 3, a metal wire can exist, the extension part surrounds the inner wall of the post mounting hole of the top cover plate 5, the contact between a post and the post mounting hole of the top cover plate 5 can be prevented, the probability of abrasion between the post and the post mounting hole of the top cover plate 5 is reduced, meanwhile, a post through hole of the lower plastic body 1 is more attached to the post mounting hole and the post of the top cover plate 5, a gap between the post and the post mounting hole of the top cover plate 5 is filled, the gas leakage of the top cover is prevented, and the sealing performance of the battery top cover is improved. Or the through holes of the two poles are not provided with the extending parts.
Preferably, the bottom of the second convex hull 22 is provided with a vent hole 222 matched with the liquid injection hole 51 and the explosion-proof valve hole 52. The air holes 222 are added, so that electrolyte can be conveniently injected, and when the battery is in short circuit, generated gas can burst the explosion-proof valve through the air holes 222, and the battery explosion is avoided.
The utility model discloses a theory of operation is:
because the structure of a top bracket cover is cancelled, but bare cells are bent from two side edges of the top cover and vertically bound below the top cover, and are very easy to scratch bare cell isolating membranes to damage pole pieces, so that the cells are short or even scrapped, therefore, the scratch-proof parts 3 are arranged on the convex hulls, and the scratch-proof parts 3 adopt smooth transition, so that the situation that the pole pieces are damaged due to scratch when the cells 6 are bound below the top cover and the lower plastic body 1 is avoided in the process that the cells 6 are bent from two side edges of the top cover; the inclined edges 212 are arranged at the two ends of the convex body 211 of the first convex hull 21, and the space for bending the battery cell 6 from the two side edges of the top cover is reserved, so that the bending process of the battery cell 6 from the two side edges of the top cover is smoother, and the improvement of the production efficiency is facilitated; the notch 213 is used for accommodating an assembly part at the bottom of the pole, such as a welding part, so that the over-welding area and the clamp space are increased, and the notch 213 is arranged at one side of the assembly at the bottom of the pole, so that the influence of the assembly part notch on the welding size and the flow area is avoided; the second convex closure 22 can increase the total contact area between the top surface of the battery cell 6 and the convex closure 2, so that when the battery is prevented from vibrating or falling, the top surface of the battery cell 6 is under large pressure, and the second convex closure 22 plays a role in dispersing vibration or falling pressure, so that the stable electric connection of the tab and the pole is ensured, the service life of the battery is prolonged, and the risk that the sealing nail falls into the battery cell 6 can be reduced.
Second embodiment
Unlike the first embodiment: the scratch-proof part 3 of the present embodiment is the inclined part 31, the second convex hull 22 is formed with a convex edge 221 along any three sides of the lower plastic body 1, the top cover plate 5 is provided with only the liquid injection hole 51, and the second convex hull 22 is correspondingly arranged at the bottom of the liquid injection hole 51. According to the structure of the actual electric core 6, the single inclined part 31 is adopted as the scratch-proof part 3, so that the situation that the pole piece is damaged due to scratch with the lower plastic body 1 when the electric core 6 is bound below the top cover can be avoided in the process that the electric core 6 is bent from two side edges of the top cover; according to actual electric core 6 and the size of lower plastic body 1, be formed with protruding edge 221 along arbitrary trilateral of lower plastic body 1 with second convex closure 22, form the protruding edge 221 of "protruding" font, increase the total area of contact between electric core 6 top surface and the convex closure 2, ensure that annotate the function of liquid hole 51 can normally realize.
Other structures are the same as those of the first embodiment, and are not described again here.
Third embodiment
Unlike the first embodiment: the anti-scraping part 3 of the present embodiment is an arc-shaped part 32, the second convex hull 22 is formed with convex edges 221 along any two sides of the lower plastic body 1, the top cover plate 5 is only provided with an explosion-proof valve hole 52, and the second convex hull 22 is correspondingly arranged at the bottom of the explosion-proof valve hole 52. According to the structure of the actual electric core 6, the arc-shaped part 32 in the shape of a circular arc, an elliptic arc or a parabola can be adopted as the scratch-proof part 3, but the utility model discloses not only this limit, the arc-shaped part 32 can also be designed into other curves that upwards form wave crests, also can avoid scraping with the lower plastic body 1 when the electric core 6 is tied under the top cover in the process that the electric core 6 is bent from the two side edges of the top cover, leading to the situation that the pole piece is damaged; according to actual electric core 6 and the size of lower plastic body 1, second convex closure 22 is formed with protruding edge 221 along arbitrary both sides of lower plastic body 1, forms the protruding edge 221 of "L" font, increases the contact total area between electric core 6 top surface and the convex closure 2, ensures that the function of explosion-proof valve can normally be realized can.
Other structures are the same as those of the first embodiment, and are not described again here.
Fourth embodiment
A battery comprises a battery core 6 and a plastic structure under the battery top cover as in the first embodiment, wherein the ratio of the total contact area between the top surface of the battery core 6 and a convex hull 2 to the total area of the top surface of the battery core 6 is 0.24.
It should be noted that: the ratio of the total contact area between the battery cell 6 top surface and the convex closure 2 and the total contact area of the battery cell 6 top surface is limited to the maximum value, the total contact area between the battery cell 6 top surface and the convex closure 2 is prevented from being too large, the convex closure 2 is prevented from excessively invading the space at the bottom of the plastic body 1, the assembly parts at the bottom of the pole column or the space of the laser clamp are not enough, and the performance of the battery is influenced. However, the utility model discloses not so limit, according to the concrete structure of battery top cap, can establish the total area of contact between 6 top surfaces of electricity core and the convex closure 2 and the total area of 6 top surfaces of electricity core than 0.6 ~ 1.0, satisfy the battery normal use can.
Fifth embodiment
A battery comprises a battery core 6 and a plastic structure under the battery top cover as in the second embodiment, wherein the ratio of the total contact area between the top surface of the battery core 6 and the convex hull 2 to the total area of the top surface of the battery core 6 is 0.05.
It should be noted that: the ratio of the total contact area between the top surface of the battery cell 6 and the convex hull 2 to the total contact area of the top surface of the battery cell 6 is limited to be the minimum value, so that the total contact area between the top surface of the battery cell 6 and the convex hull 2 is prevented from being too small, the battery cell 6 is prevented from bearing larger pressure when vibrating or falling, and an isolation film or a pole piece is easily damaged.
Sixth embodiment
A battery comprises a battery core 6 and a plastic structure under the battery top cover as in the third embodiment, wherein the ratio of the total contact area between the top surface of the battery core 6 and the convex hull 2 to the total area of the top surface of the battery core 6 is 0.14.
It should be noted that: the ratio of the total contact area between the top surface of the battery cell 6 and the convex hull 2 to the total contact area of the top surface of the battery cell 6 is defined as an intermediate value, so that the total contact area between the top surface of the battery cell 6 and the convex hull 2 is increased, the battery cell 6 is prevented from bearing larger pressure when vibrating or falling, and the space below the plastic body 1 can be reduced.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. The utility model provides a plastic structure under battery top cap which characterized in that: the plastic rubber sealing device comprises a lower plastic rubber body (1), wherein a convex hull (2) is arranged at the bottom of the lower plastic rubber body (1), and a scraping-preventing part (3) is arranged on the convex hull (2).
2. The plastic structure under battery top cap of claim 1, wherein: the convex closure (2) comprises a first convex closure (21), the first convex closure (21) is arranged on the side portion of the lower plastic body (1), and the scratch-resistant portion (3) is arranged at the end portion of the first convex closure (21).
3. The plastic structure under battery top cap of claim 1, wherein: the scratch-resistant part (3) comprises an inclined part (31) and an arc-shaped part (32) connected with the inclined part (31).
4. The plastic structure under battery top cap of claim 1, wherein: the scraping prevention part (3) is an inclined part (31) or an arc-shaped part (32).
5. The plastic structure under battery top cap of claim 2, characterized in that: adaptor piece (4) are installed to the bottom of lower plastic body (1), first convex closure (21) be provided with adaptor piece (4) complex breach (213).
6. The plastic structure under battery top cap of claim 1, wherein: the convex hull (2) comprises a second convex hull (22), and a convex edge (221) is formed on the second convex hull (22) along at least one edge of the lower plastic body (1).
7. The plastic structure under battery top cap of claim 6, characterized in that: the second convex hull (22) and the convex edge (221) are of an integrally formed structure.
8. The plastic structure under battery top cap of claim 6, characterized in that: the plastic structure still includes top cap piece (5) under the battery top cap, top cap piece (5) are provided with annotate in liquid hole (51) and the explosion-proof valve hole (52) at least one, second convex closure (22) correspond set up in annotate liquid hole (51) and/or the bottom of explosion-proof valve hole (52).
9. The plastic structure under battery top cap of claim 8, wherein: and the bottom of the second convex hull (22) is provided with a vent hole (222) matched with the liquid injection hole (51) and/or the explosion-proof valve hole (52).
10. A battery, characterized by: the battery top cover lower plastic structure comprises a battery core (6) and the battery top cover lower plastic structure as claimed in any one of claims 1 to 9, wherein the ratio of the total contact area between the top surface of the battery core (6) and the convex hull (2) to the total area of the top surface of the battery core (6) is 0.05-0.24.
CN202020800612.XU 2020-05-14 2020-05-14 Plastic structure and battery under battery top cap Active CN212366148U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115588817A (en) * 2022-11-11 2023-01-10 深圳海润新能源科技有限公司 Lower plastic part, top cap assembly, energy storage device and electric equipment
CN116780127A (en) * 2023-08-16 2023-09-19 深圳海辰储能控制技术有限公司 Lower plastic, end cover assembly, energy storage device and electric equipment
WO2024066107A1 (en) * 2022-09-27 2024-04-04 厦门海辰储能科技股份有限公司 Lower plastic, battery, battery module and electric device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066107A1 (en) * 2022-09-27 2024-04-04 厦门海辰储能科技股份有限公司 Lower plastic, battery, battery module and electric device
CN115588817A (en) * 2022-11-11 2023-01-10 深圳海润新能源科技有限公司 Lower plastic part, top cap assembly, energy storage device and electric equipment
CN115588817B (en) * 2022-11-11 2023-03-14 深圳海润新能源科技有限公司 Lower plastic part, top cap assembly, energy storage device and electric equipment
CN116780127A (en) * 2023-08-16 2023-09-19 深圳海辰储能控制技术有限公司 Lower plastic, end cover assembly, energy storage device and electric equipment

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