WO2024012478A1 - 盖板、顶盖、单体电芯和电池模组 - Google Patents

盖板、顶盖、单体电芯和电池模组 Download PDF

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Publication number
WO2024012478A1
WO2024012478A1 PCT/CN2023/106916 CN2023106916W WO2024012478A1 WO 2024012478 A1 WO2024012478 A1 WO 2024012478A1 CN 2023106916 W CN2023106916 W CN 2023106916W WO 2024012478 A1 WO2024012478 A1 WO 2024012478A1
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WO
WIPO (PCT)
Prior art keywords
cover plate
frames
convex edge
frame
cover
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Application number
PCT/CN2023/106916
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English (en)
French (fr)
Inventor
梁金云
Original Assignee
厦门海辰储能科技股份有限公司
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Application filed by 厦门海辰储能科技股份有限公司 filed Critical 厦门海辰储能科技股份有限公司
Publication of WO2024012478A1 publication Critical patent/WO2024012478A1/zh

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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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • 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

Definitions

  • This application relates to the field of battery technology, and in particular to a cover plate, top cover, single cell and battery module.
  • the battery core includes a top cover, which can be composed of a cover plate, poles, upper plastic and other components.
  • a top cover which can be composed of a cover plate, poles, upper plastic and other components.
  • knurling is usually added to the poles or the cover plate is added with notches or protrusions.
  • the plastic is installed to achieve the anti-twist function of the pole.
  • the current anti-twist aspect of the top cover is single, and it is not possible to add anti-twist to the poles from multiple aspects.
  • some anti-twist structures are prone to create gaps with the cover during plastic injection molding, which greatly reduces the anti-twist capability.
  • the embodiment of the present application provides a cover plate, a top cover, a single cell and a battery module.
  • a cover plate in an embodiment of the present application is used for a single battery core, and the cover plate includes:
  • the board body is provided with through holes
  • a flange is provided on the surface of the plate body and surrounds the through hole.
  • the flange is provided with at least one notch, and the gap connects the internal space surrounded by the flange with the outside of the flange. space.
  • the above-mentioned cover plate has a gap in the convex edge, so that during the injection molding process, the upper plastic can be stuck on the upper plastic to prevent twisting.
  • the gap that has not yet been filled with plastic can be connected to the outside world.
  • the gas formed during the plastic injection molding process can be discharged from the gap. That is to say, the setting of the gap is also conducive to the discharge of gases in the upper plastic injection molding process, prevents the existence of bubbles in the upper plastic injection molding, which affects the physical properties of the upper plastic, and prevents the upper plastic and the cover plate from being pulled out of the gap when the upper plastic is drafted, thereby affecting the Anti-twist ability.
  • the depth of the notch is equal to the height of the convex edge.
  • the convex edge forms a rounded square frame around the through hole, and the notch is opened in at least one corner of the rounded square.
  • the convex edge includes two first frames and two second frames, the two first frames are opposite, and the two second frames are opposite,
  • the surface of at least one first frame is provided with a first protrusion, and/or
  • the surface of at least one second frame is provided with a second protrusion.
  • the convex edge includes two first frames and two second frames, the two first frames are opposite, and the two second frames are opposite,
  • the surface of at least one first frame is provided with a first groove, and/or
  • the surface of at least one second frame is provided with a second groove.
  • the depth of the first groove is no greater than the depth of the notch, and/or
  • the depth of the second groove is not greater than the depth of the notch.
  • the convex edge has a frame-like structure, and the frame-like structure includes four frames, at least one of the frames is provided with a protrusion and two grooves, and the protrusion is located on the two sides. between grooves.
  • the plate body includes a first surface and a second surface, the convex edge is provided on the first surface, and the second surface is also provided with a depression, and the depression surrounds and communicates with the through hole.
  • the cover plate includes a concave-convex structure, and the concave-convex structure is disposed on a surface of the convex edge facing away from the plate body.
  • the convex-concave structure can enhance the anti-twisting performance of the upper plastic and cover.
  • a top cover according to the embodiment of the present application including:
  • the top cover further includes:
  • the pole is installed in the through hole, the insulating piece is fixedly connected to the surface of the pole, and a part of the insulating piece fills the gap.
  • a battery module according to an embodiment of the present application includes the single cell of the above embodiment.
  • top cover, single cell and battery module have gaps in the convex edges, so that the upper plastic can be molded during the injection molding process. On the other hand, the plastic can be stuck to prevent twisting.
  • the gap that has not yet been filled with plastic can be connected to the outside world.
  • the gas formed during the plastic injection molding process can be discharged from the gap. That is to say, the setting of the gap is also conducive to the discharge of gases in the upper plastic injection molding process, prevents the existence of bubbles in the upper plastic injection molding, which affects the physical properties of the upper plastic, and prevents the upper plastic and the cover plate from being pulled out of the gap when the upper plastic is drafted, thereby affecting the Anti-twist ability.
  • Figure 1 is a schematic three-dimensional view of the cover plate according to the embodiment of the present application.
  • Figure 2 is an enlarged schematic diagram of position A in Figure 1;
  • Figure 3 is a top view of the cover plate according to the embodiment of the present application.
  • Figure 4 is an enlarged view of B in Figure 3;
  • Figure 5 is a partial cross-sectional view of the cover plate in Figure 3 along line C-C;
  • Figure 6 is another three-dimensional schematic view of the cover plate according to the embodiment of the present application.
  • cover plate - 100 plate body - 12, convex edge - 14, through hole - 16, notch - 18, upper surface - 20, lower surface - 22, first frame - 24, second frame - 26 , first protrusion-28, second protrusion-30, second groove-32, depression-34.
  • the first feature being “above” or “below” the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but through Additional characteristic contacts between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “below” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • a cover plate 100 is used for a single battery core.
  • the cover plate 100 includes a plate body 12 and a flange 14 .
  • the plate body 12 is provided with a through hole 16 .
  • the flange 14 is provided on the surface of the plate body 12 and surrounds the through hole 16 .
  • the flange 14 is provided with at least one notch 18 , and the gap 18 connects the internal space surrounded by the flange 14 with the external space of the flange 14 .
  • the above-mentioned cover plate 100 has a notch 18 in the convex edge 14, so that during the injection molding process, the upper plastic can be stuck on the upper plastic to achieve anti-twisting.
  • the gap 18 that has not yet been filled with plastic can be connected to the outside world.
  • the gas formed during the plastic injection molding process can be discharged from the gap 18 .
  • the setting of the notch 18 is also conducive to the discharge of the upper plastic injection molding process gas, prevents the existence of air bubbles in the upper plastic injection molding, which affects the physical properties of the upper plastic, and prevents the upper plastic and the cover 100 from being pulled out of the gap when the upper plastic is pulled out. This in turn affects the anti-twist ability.
  • the cover plate 100 can be used for square battery cells, circular battery cells, or other shapes of single battery cells.
  • the cover plate 100 is basically in the shape of a flat rectangular parallelepiped and is used for square batteries. It can be understood that when the cover plate 100 is used for a circular battery core, the cover plate 100 can be in a disc shape.
  • the plate body 12 is provided with two through holes 16, and each through hole 16 can allow one pole of a single battery core to pass through.
  • the shape of the through hole 16 is a circular through hole 16 . It can be understood that in other embodiments, the number of through holes 16 on the plate body 12 can also be other numbers, and the shape of the through holes 16 can also be other regular or irregular shapes, which are not specifically limited here.
  • the plate body 12 includes an upper surface 20 and a lower surface 22, and the convex edge 14 is provided on the upper surface 20.
  • the through hole 16 penetrates the upper surface 20 and the lower surface 22 .
  • the plate body 12 can be made of metal material, such as aluminum or other metal materials, which is not specifically limited here.
  • the plate body 12 and the convex edge 14 can be an integral structure, or the plate body 12 and the convex edge 14 can be separate structures. For example, the plate body 12 and the convex edge 14 can be manufactured separately, and then the convex edge 14 can be fixed on the plate.
  • the setting of the notch 18 can increase the adhesion area between the upper plastic and the cover 100, and because the notch 18 connects the internal space surrounded by the convex edge 14 and the external space of the convex edge 14, there is It is beneficial for the upper plastic injection molding process gas to be discharged from the inner space to the outer space through the gap 18, and to prevent the existence of air bubbles in the upper plastic injection molding and affecting the physical properties of the upper plastic. Moreover, the increased adhesion area between the upper plastic and the cover plate 100 can also prevent the upper plastic and the cover plate 100 from being pulled out of the gap when the upper plastic is pulled out, thereby affecting the anti-twisting ability. At the same time, it also improves the yield rate of the top cover production. Reduces the cost of the top cover.
  • the upper plastic component filled in the notch 18 combines with the convex edge 14 of the cover 100 to further strengthen the original anti-twisting function.
  • the depth of notch 18 is equal to the height of flange 14 . In this way, the injection molding gas can be made more Drain smoothly.
  • the depth of the notch 18 is equal to the height of the convex edge 14 , so that the bottom surface of the notch 18 is flush with the upper surface 20 of the plate body 12 . It can also be understood that the bottom surface of the internal space surrounded by the convex edge 14 is located on the same plane as the bottom surface of the notch 18 and the bottom surface of the external space of the convex edge 14 .
  • the gas in the internal space surrounded by the convex edge 14 can be discharged to the external space of the convex edge 14 through the notch 18 with basically no obstruction, so that the injection gas can be discharged more smoothly.
  • the flange 14 forms a rounded square frame around the through hole 16, and the notch 18 is opened in at least one corner of the rounded square. In this way, the anti-twist performance can be improved.
  • the rounded square frame includes two first frames 24 and two second frames 26.
  • the two first frames 24 are opposite and the two second frames 26 are opposite.
  • the two first frames 24 are opposite to each other.
  • the frames 24 are respectively the upper frame and the lower frame, and the two second frames 26 are respectively the left frame and the right frame.
  • a gap 18 is formed at the connection between the two adjacent frames, and the upper plastic part in the gap 18 is filled. Anti-twisting can be achieved from the extending direction of the first frame 24 and the extending direction of the second frame 26, thereby improving the anti-twisting performance of the upper plastic and the cover 100.
  • the four corners of the rounded square frame are each provided with a notch 18.
  • the gas in the internal space surrounded by the convex edge 14 can escape from the notches in the four corners. 18 discharge, increase the gas discharge speed.
  • the rounded square frame is at the corner, and the inner wall of the convex edge 14 is arc-shaped, which can guide the air flow to the gap 18, thereby reducing gas resistance and further increasing the exhaust speed.
  • the convex edge 14 includes two first borders 24 and two second borders 26.
  • the two first borders 24 are opposite and the two second borders 26 are opposite.
  • the surface of at least one first frame 24 is provided with first protrusions 28, and/or
  • the surface of at least one second frame 26 is provided with second protrusions 30 .
  • the upper plastic when the upper plastic is injection molded, the upper plastic forms depressions at the protrusions.
  • the cooperation of the protrusions and the depressions can achieve the anti-twisting performance of the upper plastic and the cover 100 .
  • the surfaces of the two first frames 24 are both provided with first protrusions 28
  • the surfaces of the two second frames 26 are both provided with second protrusions 30 .
  • a first protrusion 28 is provided on a surface of a first frame 24 .
  • first protrusions 28 are provided on the surfaces of the two first frames 24 .
  • a second protrusion 30 is provided on the surface of a second frame 26 .
  • the surfaces of the two second frames 26 are provided with second protrusions 30 .
  • the number of protrusions provided on the surface of each frame may be single, two or more than two. In the illustrated embodiment, the number of protrusions provided on the surface of each frame is single.
  • the raised edge 14 includes two first frames 24 and two second frames 26.
  • the two first frames 24 24 are opposite, and the two second frames 26 are opposite,
  • the surface of at least one first frame 24 is provided with a first groove, and/or
  • the surface of at least one second frame 26 is provided with a second groove 32 .
  • protrusions are formed on the upper plastic at the grooves, and the cooperation between the protrusions and the grooves can achieve the anti-twisting performance of the upper plastic and the cover plate 100 .
  • the surfaces of the two second frames 26 are both provided with second grooves 32 .
  • a first groove is provided on the surface of a first frame 24 .
  • the surfaces of the two first frames 24 are provided with first grooves.
  • a second groove 32 is provided on the surface of a second frame 26 .
  • the number of grooves provided on the surface of each frame may be single, two or more than two. In the illustrated embodiment, the number of grooves provided on the surface of a second frame 26 is two.
  • the depth of the first groove 32 is no greater than the depth of the notch 18
  • the depth of the second groove 32 is no greater than the depth of the notch 18 .
  • the depth of the second groove 32 is smaller than the depth of the notch 18 . It can be understood that the second frame 26 is not broken into multiple segments, which ensures a certain structural strength of the cover 100 .
  • the depth of the second groove 32 may be equal to the depth of the notch 18 .
  • the bottom surface of the second groove 32 is flush with the upper surface 20 of the plate body 12 , which can also be understood as the convex edge 14 .
  • the bottom surface of the enclosed internal space is on the same plane as the bottom surface of the second groove 32 and the bottom surface of the external space of the convex edge 14, which can increase the exhaust speed.
  • the depth of the first groove may be equal to the depth of the notch 18 .
  • the bottom surface of the first groove is flush with the upper surface 20 of the plate body 12 , which can also be understood as the area surrounded by the convex edge 14
  • the bottom surface of the internal space is on the same plane as the bottom surface of the first groove and the bottom surface of the external space of the convex edge 14, which can increase the exhaust speed.
  • the depth of the first groove may be smaller than the depth of the notch 18 . It can be understood that the first frame 24 is not broken into multiple segments, which ensures a certain structural strength of the cover 100 .
  • the convex edge 14 is in the form of a frame-like structure, and the frame-like structure includes four frames, at least one frame is provided with a protrusion and two grooves, and the protrusion is located between the two grooves. In this way, the anti-twist performance can be improved.
  • the frame-like structure is a square frame with rounded corners, and the four frames include two first frames 24 and two second frames 26 .
  • Each of the two second frames 26 is provided with a second protrusion 30 and two second grooves 32.
  • the second protrusion 30 is located between the two second grooves 32, correspondingly.
  • the upper plastic has a depression formed at the second protrusion 30 , and a protrusion formed at the second groove 32 .
  • the plate body 12 includes a first surface and a second surface, and the convex edge 14 is provided on The first surface and the second surface are also provided with recesses 34 , and the recesses 34 surround and communicate with the through holes 16 . In this way, the anti-twisting performance of the lower plastic and the cover 100 can be improved.
  • the first surface may be the upper surface 20 of the plate body 12
  • the second surface may be the lower surface 22 of the plate body 12
  • the cover 100 is also combined with the lower plastic.
  • a protrusion can be formed at a position corresponding to the depression 34. The cooperation between the protrusion and the depression 34 can improve the anti-twist performance of the lower plastic and the cover 100.
  • the cover 100 includes a concave-convex structure, and the concave-convex structure is disposed on a surface of the convex edge 14 facing away from the plate body 12 .
  • the convex-concave structure can enhance the anti-twisting performance of the upper plastic and the cover 100 .
  • the concave-convex structure may include one or any combination of the above-mentioned first protrusions 28, second protrusions 30, first grooves and second grooves 32.
  • the convex-concave structure may include other shapes of protrusions, ribs, convex edges, depressions and other structures.
  • the part where the upper plastic is connected to the convex-concave structure forms another convex-concave structure that is complementary to the convex-concave structure, which increases the connection area between the upper plastic and the cover 100, and enhances the protection between the upper plastic and the cover 100. Torsion performance.
  • a top cover according to the embodiment of the present application including:
  • the top cover further includes an upper plastic.
  • the upper plastic is disposed on the surface of the cover plate 100 and covers the convex edge 14 .
  • the upper plastic has a portion for filling the gap 18 .
  • the flange 14 is provided on the upper surface 20 of the cover 100 .
  • top cover 100 further includes:
  • the insulating piece, the pole is installed in the through hole 16, the insulating piece is fixedly connected to the surface of the pole, and a part of the insulating piece is filled in the gap 18.
  • the insulating component may be made of plastic or other insulating components, which are not specifically limited here.
  • the pole can be made of metal material.
  • top cover may also include other components, such as lower plastic, sealing rings, explosion-proof valves, etc.
  • the single battery core can also include a shell, which is a shell with an opening on one side.
  • the top cover can be installed at the opening to form a relatively sealed shell.
  • the components of the battery core and the electrolyte can be placed in the shell. wait.
  • the single battery core may be a square battery core, a circular battery core, or a single battery core of other shapes, which is not specifically limited here.
  • a battery module according to an embodiment of the present application includes the single cell of the above embodiment.
  • top cover, single cells and battery modules are provided with notches 18 on the convex edge 14, so that during the injection molding process, the upper plastic can be stuck on the upper plastic to prevent twisting.
  • the gap 18 that has not yet been filled with plastic can be connected to the outside world.
  • the gas formed during the plastic injection molding process can be discharged from the gap 18 .
  • the setting of the notch 18 is also conducive to the discharge of the upper plastic injection molding process gas, prevents the existence of air bubbles in the upper plastic injection molding, which affects the physical properties of the upper plastic, and prevents the upper plastic from being pulled out of the gap between the cover plate 12 when the upper plastic is pulled out. This in turn affects the anti-twist ability.
  • the battery module may include one or more single cells, and the plurality of single cells may be electrically connected in series, parallel, or series-parallel.
  • Multiple battery modules can form a power battery pack, and multiple battery modules can also be assembled on battery clusters.
  • the battery clusters can be placed in containers to form container-type energy storage devices.
  • Multiple battery modules can also be placed on the energy storage cabinet to form an energy storage device in the form of a household energy storage cabinet.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种盖板(100)、顶盖、单体电芯和电池模组。盖板(100)用于单体电芯，盖板(100)包括板体(12)和凸边(14)，板体(12)开设有通孔(16)；凸边(14)设在所述板体(12)的表面，并围绕所述通孔(16)，所述凸边(14)设有至少一个缺口(18)，所述缺口(18)连通所述凸边(14)所围成的内部空间与所述凸边(14)的外部空间。

Description

盖板、顶盖、单体电芯和电池模组
优先权信息
本申请请求2022年07月14日向中国国家知识产权局提交的、专利申请号为2022218332764的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本申请涉及电池技术领域，特别涉及一种盖板、顶盖、单体电芯和电池模组。
背景技术
通常电芯包括顶盖，顶盖可由盖板、极柱、上塑胶等部件组成，为了实现电芯极柱的防扭功能一般会在极柱增加滚花或者盖板增加刻痕、凸起来卡住上塑胶从而实现极柱的防扭功能。目前的顶盖防扭方面单一，不能从多方面的对极柱增加防扭。并且部分防扭结构在上塑胶注塑时容易与盖板产生缝隙进而大大降低抗扭能力。
发明内容
本申请实施方式提供了一种盖板、顶盖、单体电芯和电池模组。
本申请实施方式的一种盖板，用于单体电芯，所述盖板包括：
板体，开设有通孔；
凸边，设在所述板体的表面，并围绕所述通孔，所述凸边设有至少一个缺口，所述缺口连通所述凸边所围成的内部空间与所述凸边的外部空间。
上述盖板，通过在凸边开设缺口，使得上塑胶在注塑过程中，一方面，可以卡住上塑胶而实现防扭。
另一方面，在上塑胶注塑于盖板的过程中，暂未被上塑胶填充的缺口是能够连通外界。这样上塑胶注塑过程中形成的气体能够由缺口处排出。也即，缺口的设置也有利于上塑胶注塑工艺气体的排出，防止上塑胶注塑存在气泡，影响上塑胶的物理性能、还能防止上塑胶拔模时将上塑胶与盖板拔出缝隙进而影响防扭能力。
在某些实施方式中，所述缺口的深度与所述凸边的高度相等。
如此，可以使得注塑气体更顺利地排出。
在某些实施方式中，所述凸边围绕所述通孔呈一圆角方形框，所述缺口开设在所述圆角方形的至少一个边角。
如此，可以提升防扭性能。
在某些实施方式中，所述凸边包括两个第一边框和两个第二边框，所述两个第一边框相对，所述两个第二边框相对，
至少一个所述第一边框的表面设有第一凸起，和/或
至少一个所述第二边框的表面设有第二凸起。
如此，可以实现上塑胶与盖板的防扭性能。
在某些实施方式中，所述凸边包括两个第一边框和两个第二边框，所述两个第一边框相对，所述两个第二边框相对，
至少一个所述第一边框的表面设有第一凹槽，和/或
至少一个所述第二边框的表面设有第二凹槽。
如此，可以实现上塑胶与盖板的防扭性能。
在某些实施方式中，所述第一凹槽的深度不大于所述缺口的深度，和/或
所述第二凹槽的深度不大于所述缺口的深度。
如此，可以保证盖板一定的结构强度和提升排气速度。
在某些实施方式中，所述凸边呈框状结构，所述框状结构包括四个边框，至少一个所述边框设有一个凸起和两个凹槽，所述凸起位于所述两个凹槽之间。
如此，可以提升防扭性能。
在某些实施方式中，所述板体包括第一表面和第二表面，所述凸边设在所述第一表面，所述第二表面还设有凹陷，所述凹陷围绕并连通所述通孔。
如此，可以提升下塑胶和盖板的防扭性能。
在某些实施方式中，所述盖板包括凹凸结构，所述凹凸结构设置在所述凸边背离所述板体的表面。
如此，凸凹结构可以增强上塑胶与盖板的防扭性能。
本申请实施方式的一种顶盖，包括：
上述任一实施方式的盖板。
在某些实施方式中，所述顶盖还包括：
极柱；和
绝缘件，所述极柱安装于所述通孔，所述绝缘件固定连接于所述极柱的表面，所述绝缘件的一部分填充于所述缺口。
本申请实施方式的一种单体电芯，包括：
上述实施方式的顶盖。
本申请实施方式的一种电池模组，包括上述实施方式的单体电芯。
上述顶盖、单体电芯和电池模组，通过在凸边开设缺口，使得上塑胶在注塑过程中，一 方面，可以卡住上塑胶而实现防扭。
另一方面，在上塑胶注塑于盖板的过程中，暂未被上塑胶填充的缺口是能够连通外界。这样上塑胶注塑过程中形成的气体能够由缺口处排出。也即，缺口的设置也有利于上塑胶注塑工艺气体的排出，防止上塑胶注塑存在气泡，影响上塑胶的物理性能、还能防止上塑胶拔模时将上塑胶与盖板拔出缝隙进而影响防扭能力。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本申请实施方式的盖板的立体示意图；
图2是图1中A处的放大示意图；
图3是本申请实施方式的盖板的俯视图；
图4是图3中B处的放大图；
图5是图3中的盖板沿C-C线的部分截面图；
图6是本申请实施方式的盖板的另一立体示意图。
附图标记说明：盖板-100，板体-12，凸边-14，通孔-16，缺口-18，上表面-20，下表面-22，第一边框-24，第二边框-26，第一凸起-28，第二凸起-30，第二凹槽-32，凹陷-34。
具体实施方式
下面详细描述本申请的实施方式，所述实施方式的示例在附图中示出，其中，相同或类似的标号自始至终表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本申请的实施方式，而不能理解为对本申请的实施方式的限制。
在本申请的实施方式中，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的实施方式的不同结构。 为了简化本申请的实施方式的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。本申请的实施方式可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请的实施方式提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参图1至图2，本申请实施方式的一种盖板100，用于单体电芯，盖板100包括板体12和凸边14。板体12开设有通孔16。凸边14设在板体12的表面，并围绕通孔16，凸边14设有至少一个缺口18，缺口18连通凸边14所围成的内部空间与凸边14的外部空间。
上述盖板100，通过在凸边14开设缺口18，使得上塑胶在注塑过程中，一方面，可以卡住上塑胶从而实现防扭。
另一方面，在上塑胶注塑于盖板100的过程中，暂未被上塑胶填充的缺口18是能够连通外界。这样上塑胶注塑过程中形成的气体能够由缺口18处排出。也即，缺口18的设置也有利于上塑胶注塑工艺气体的排出，防止上塑胶注塑存在气泡，影响上塑胶的物理性能、还能防止上塑胶拔模时将上塑胶与盖板100拔出缝隙进而影响防扭能力。
具体地，盖板100可以用于方形电芯，也可以用于圆形电芯，或其他形状的单体电芯。在图1所示的实施方式中，盖板100基本呈偏平的长方体形，用于方形电芯。可以理解，当盖板100用于圆形电芯时，盖板100可以呈圆盘状。
板体12设有两个通孔16，每个通孔16可以供单体电芯的一个极柱穿过。通孔16的形状为圆形通孔16。可以理解，在其他实施方式中，对板体12上的通孔16数量还可以是其他数量，通孔16形状还可以是其他规则或不规范的形状，在此不作具体限定。
板体12包括上表面20和下表面22，凸边14设在上表面20。通孔16贯穿上表面20和下表面22。板体12可以采用金属材料制成，如铝或其他金属材料，在此不作具体限定。可以是板体12与凸边14为一体结构，也可以是板体12和凸边14为分体结构，例如，板体12和凸边14可以分别单独制造，然后将凸边14固定在板体12的上表面20，并围绕通孔16。
在上塑胶的注塑工艺中，缺口18的设置可以使上塑胶与盖板100的附着面积增大，并且，由于缺口18连通凸边14所围成的内部空间和凸边14的外部空间，有利于上塑胶注塑工艺气体从内部空间经缺口18排出至外部空间中，防止上塑胶注塑存在气泡而影响上塑胶的物理性能。而且，上塑胶与盖板100的附着面积增大，也能防止上塑胶拔模时将上塑胶与盖板100拔出缝隙进而影响防扭能力，同时，还提高了顶盖生产的优率，降低了顶盖的成本。填充在缺口18的上塑胶部件与盖板100的凸边14相结合更加强了原有的防扭功能。
在某些实施方式中，缺口18的深度与凸边14的高度相等。如此，可以使得注塑气体更 顺利地排出。
具体地，缺口18的深度与凸边14的高度相等，可以使得缺口18的底面与板体12的上表面20齐平。也可以理解为，凸边14所围成的内部空间的底面与缺口18底面以及凸边14外部空间的底面位于同一平面。上塑胶注塑时，凸边14所围成的内部空间的气体，可以基本上没有阻碍地经缺口18排至凸边14的外部空间，使得注塑气体更顺利地排出。
在某些实施方式中，凸边14围绕通孔16呈一圆角方形框，缺口18开设在圆角方形的至少一个边角。如此，可以提升防扭性能。
具体地，圆角方形框包括两个第一边框24和两个第二边框26，两个第一边框24相对，两个第二边框26相对，请参图3和图4，两个第一边框24分别为上边框和下边框，两个第二边框26分别为左边框和右边框，相邻接的两个边框的连接处形成有一个缺口18，填充在缺口18内的上塑胶部位，可以从第一边框24所在延伸方向和第二边框26所在延伸方向实现防扭，提升上塑胶和盖板100的防扭性能。
进一步地，在图示的实施方式中，圆角方形框的四个边角分别设有一个缺口18，排气时，凸边14所围成的内部空间的气体可以从四个边角的缺口18排出，提升气体排出速度。而且，圆角方形框在边角位置，凸边14的内壁呈弧形，可以对气流进行导向作用，导向至缺口18处，减少气体阻力，进一步提升排气速度。
在某些实施方式中，凸边14包括两个第一边框24和两个第二边框26，两个第一边框24相对，两个第二边框26相对，
至少一个第一边框24的表面设有第一凸起28，和/或
至少一个第二边框26的表面设有第二凸起30。
如此，可以实现上塑胶与盖板100的防扭性能。
具体地，上塑胶注塑时，上塑胶在凸起处形成有凹陷，凸起与凹陷的配合，可以实现上塑胶与盖板100的防扭性能。
在图示的实施方式中，两个第一边框24的表面均设有第一凸起28，和两个第二边框26的表面均设有第二凸起30。
在一个实施方式中，一个第一边框24的表面设有第一凸起28。
在一个实施方式中，两个第一边框24的表面设有第一凸起28。
在一个实施方式中，一个第二边框26的表面设有第二凸起30。
在一个实施方式中，两个第二边框26的表面设有第二凸起30。
每个边框的表面上设置的凸起的数量可以是单个、两个或多于两个，在图示的实施方式中，每个边框的表面上设置的凸起的数量是单个。
在某些实施方式中，凸边14包括两个第一边框24和两个第二边框26，两个第一边框 24相对，两个第二边框26相对，
至少一个第一边框24的表面设有第一凹槽，和/或
至少一个第二边框26的表面设有第二凹槽32。
如此，可以实现上塑胶与盖板100的防扭性能。
具体地，上塑胶注塑时，上塑胶在凹槽处形成有凸起，凸起与凹槽的配合，可以实现上塑胶与盖板100的防扭性能。
在图示的实施方式中，两个第二边框26的表面均设有第二凹槽32。
在一个实施方式中，一个第一边框24的表面设有第一凹槽。
在一个实施方式中，两个第一边框24的表面设有第一凹槽。
在一个实施方式中，一个第二边框26的表面设有第二凹槽32。
每个边框的表面上设置的凹槽的数量可以是单个、两个或多于两个，在图示的实施方式中，一个第二边框26的表面上设置的凹槽的数量是两个。
在某些实施方式中，第一凹槽的深度不大于缺口18的深度，和/或，第二凹槽32的深度不大于缺口18的深度。
具体地，在图示的实施方式中，第二凹槽32的深度小于缺口18的深度，可以理解为，第二边框26没有断开成多段，可以保证盖板100一定的结构强度。
在一个实施方式中，第二凹槽32的深度可以等于缺口18的深度，此时，第二凹槽32的底面与板体12的上表面20齐平，也可以理解为，凸边14所围成的内部空间的底面与第二凹槽32底面以及凸边14外部空间的底面位于同一平面，可以提升排气速度。
在一个实施方式中，第一凹槽的深度可以等于缺口18的深度，此时，第一凹槽的底面与板体12的上表面20齐平，也可以理解为，凸边14所围成的内部空间的底面与第一凹槽底面以及凸边14外部空间的底面位于同一平面，可以提升排气速度。
在一个实施方式中，第一凹槽的深度可以小于缺口18的深度，可以理解为，第一边框24没有断开成多段，可以保证盖板100一定的结构强度。
在某些实施方式中，凸边14呈框状结构，框状结构包括四个边框，至少一个边框设有一个凸起和两个凹槽，凸起位于两个凹槽之间。如此，可以提升防扭性能。
具体地，在图示的实施方式中，框状结构为圆角方形框，四个边框包括两个第一边框24和两个第二边框26。两个第二边框26中，每个第二边框26均设有一个第二凸起30和两个第二凹槽32，第二凸起30位于两个第二凹槽32之间，对应地，上塑胶在第二凸起30处形成有凹陷，及在第二凹槽32处形成有凸起。这样，在第二边框26处，形成有三处凸凹配合的防扭结构，可以提升防扭性能。
在某些实施方式中，请参图5和图6，板体12包括第一表面和第二表面，凸边14设在 第一表面，第二表面还设有凹陷34，凹陷34围绕并连通通孔16。如此，可以提升下塑胶和盖板100的防扭性能。
具体地，第一表面可为板体12的上表面20，第二表面可为板体12的下表面22。盖板100还与下塑胶结合，下塑胶在注塑时，可以在凹陷34对应的位置形成凸起，凸起与凹陷34的配合，可以提升下塑胶与盖板100的防扭性能。
在某些实施方式中，盖板100包括凹凸结构，凹凸结构设置在凸边14背离板体12的表面。如此，凸凹结构可以增强上塑胶与盖板100的防扭性能。
具体地，在一个实施方式中，凹凸结构可以包括上述的第一凸起28、第二凸起30、第一凹槽和第二凹槽32中的其中一个或任意组合。
在一个实施方式中，凸凹结构可以包括其它形状的凸起、凸筋，凸边、凹陷等结构。
当上塑胶与盖板100连接时，上塑胶与凸凹结构连接的部位形成与凸凹结构互补的另一凸凹结构，增加了上塑胶与盖板100的连接面积，增强上塑胶与盖板100的防扭性能。
本申请实施方式的一种顶盖，包括：
上述任一实施方式的盖板100。
具体地，在一个实施方式中，顶盖还包括上塑胶，上塑胶设在盖板100的表面并盖设凸边14，上塑胶具有填充缺口18的部位。在图示的实施方式中，凸边14设在盖板100的上表面20。
在某些实施方式中，顶盖100还包括：
极柱；和
绝缘件，极柱安装于通孔16，绝缘件固定连接于极柱的表面，绝缘件的一部分填充于缺口18。具体地，绝缘件可以是上塑胶，或其它绝缘件，在此不作具体限定。极柱可以是金属材料制成。
另外，顶盖还可以包括其他部件，其他部件例如是下塑胶、密封圈、防爆阀等。
本申请实施方式的一种单体电芯，包括：
上述实施方式的顶盖。
具体地，单体电芯还可以包括壳体，壳体呈一侧开口的壳体，顶盖可以安装在开口处，以形成相对密封的壳体，壳体内可以放置电芯的部件及电解液等。
单体电芯可以是方形电芯，也可以是圆形电芯，或其他形状的单体电芯，在此不作具体限定。
本申请实施方式的一种电池模组，包括上述实施方式的单体电芯。
上述顶盖、单体电芯和电池模组，通过在凸边14开设缺口18，使得上塑胶在注塑过程中，一方面，可以卡住上塑胶而实现防扭。
另一方面，在上塑胶注塑于盖板100的过程中，暂未被上塑胶填充的缺口18是能够连通外界。这样上塑胶注塑过程中形成的气体能够由缺口18处排出。也即，缺口18的设置也有利于上塑胶注塑工艺气体的排出，防止上塑胶注塑存在气泡，影响上塑胶的物理性能、还能防止上塑胶拔模时将上塑胶与盖板12拔出缝隙进而影响防扭能力。
具体地，电池模组可以包括一个或多个单体电芯，多个单体电芯可以以串联、并联或串并联的方式进行电连接。多个电池模组可以形成动力电池包，多个电池模组也可以装配在电池簇上，电池簇可以放置在集装箱内，以形成集装箱式的储能装置。多个电池模组还可以放置在储能柜上形成家用储能柜形式的储能装置。
在本说明书的描述中，参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一者实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施方式，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施方式进行多种变化、组合、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (13)

  1. 一种盖板，用于单体电芯，其特征在于，所述盖板包括：
    板体，开设有通孔；
    凸边，设在所述板体的表面，并围绕所述通孔，所述凸边设有至少一个缺口，所述缺口连通所述凸边所围成的内部空间与所述凸边的外部空间。
  2. 根据权利要求1所述的盖板，其特征在于，所述缺口的深度与所述凸边的高度相等。
  3. 根据权利要求1或2所述的盖板，其特征在于，所述凸边围绕所述通孔呈一圆角方形框，所述缺口开设在所述圆角方形的至少一个边角。
  4. 根据权利要求1-3任一项所述的盖板，其特征在于，所述凸边包括两个第一边框和两个第二边框，所述两个第一边框相对，所述两个第二边框相对，
    至少一个所述第一边框的表面设有第一凸起，和/或
    至少一个所述第二边框的表面设有第二凸起。
  5. 根据权利要求1-3任一项所述的盖板，其特征在于，所述凸边包括两个第一边框和两个第二边框，所述两个第一边框相对，所述两个第二边框相对，
    至少一个所述第一边框的表面设有第一凹槽，和/或
    至少一个所述第二边框的表面设有第二凹槽。
  6. 根据权利要求5所述的盖板，其特征在于，所述第一凹槽的深度不大于所述缺口的深度，和/或
    所述第二凹槽的深度不大于所述缺口的深度。
  7. 根据权利要求1-3任一项所述的盖板，其特征在于，所述凸边呈框状结构，所述框状结构包括四个边框，至少一个所述边框设有一个凸起和两个凹槽，所述凸起位于所述两个凹槽之间。
  8. 根据权利要求1-7任一项所述的盖板，其特征在于，所述板体包括第一表面和第二表面，所述凸边设在所述第一表面，所述第二表面还设有凹陷，所述凹陷围绕并连通所述通孔。
  9. 根据权利要求1-8任一项所述的盖板，其特征在于，所述盖板包括凹凸结构，所述凹凸结构设置在所述凸边背离所述板体的表面。
  10. 一种顶盖，其特征在于，包括：
    权利要求1-9任一项所述的盖板。
  11. 根据权利要求10所述的顶盖，其特征在于，所述顶盖还包括：
    极柱；和
    绝缘件，所述极柱安装于所述通孔，所述绝缘件固定连接于所述极柱的表面，所述绝缘 件的一部分填充于所述缺口。
  12. 一种单体电芯，其特征在于，包括：
    权利要求10或11所述的顶盖。
  13. 一种电池模组，其特征在于，包括权利要求12所述的单体电芯。
PCT/CN2023/106916 2022-07-14 2023-07-12 盖板、顶盖、单体电芯和电池模组 WO2024012478A1 (zh)

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