WO2024022155A1 - 密封钉、端盖组件、储能装置及用电设备 - Google Patents

密封钉、端盖组件、储能装置及用电设备 Download PDF

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Publication number
WO2024022155A1
WO2024022155A1 PCT/CN2023/107846 CN2023107846W WO2024022155A1 WO 2024022155 A1 WO2024022155 A1 WO 2024022155A1 CN 2023107846 W CN2023107846 W CN 2023107846W WO 2024022155 A1 WO2024022155 A1 WO 2024022155A1
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WO
WIPO (PCT)
Prior art keywords
sealing
plate
fastening
sealing nail
elastic part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/107846
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English (en)
French (fr)
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WO2024022155A9 (zh
Inventor
张灵阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hithium Energy Storage Technology Co Ltd
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Xiamen Hithium Energy Storage Technology Co Ltd
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Publication date
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Publication of WO2024022155A1 publication Critical patent/WO2024022155A1/zh
Publication of WO2024022155A9 publication Critical patent/WO2024022155A9/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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
    • 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
    • H01M50/183—Sealing members
    • 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. Specifically, this application relates to sealing nails, end cap assemblies, energy storage devices and electrical equipment.
  • the liquid injection hole on the cover plate needs to be sealed to prevent electrolyte from overflowing, otherwise dangerous situations such as electrolyte leakage may occur.
  • the rubber nails are generally placed first, and then the sealing nails are placed, and then laser welding is used to weld the sealing nails to the cover plate.
  • the existing technology has the following shortcomings: (1) Each component needs to be installed step by step, and the preparation process is cumbersome, which affects production capacity; (2) Laser welding is used to weld the sealing nail to the cover plate, which consumes a lot of energy; (3) Laser welding is unstable and prone to welding problems such as sealing nail cracks.
  • the present application aims to solve, at least to a certain extent, one of the technical problems in the related art.
  • the purpose of this application is to propose sealing nails, end cover components, energy storage devices and electrical equipment.
  • the buckle-type integrated sealing nail of this application integrates the rubber nail and the sealing nail into one body, which reduces the steps of placing the rubber nail first and then the sealing nail; this application does not require a laser welding process and avoids undesirable phenomena such as sealing nail welding cracks. appears; in a vacuum environment, you can unscrew the sealing nail to replenish the electrolyte or replace the sealing nail with a new one, which is very convenient and increases the use time of the battery core.
  • a sealing nail is proposed.
  • the sealing nail includes:
  • a connecting column which is provided below the sealing nail seat
  • An elastic part, the elastic part is sleeved on the periphery of the connecting column;
  • sealing plate is arranged below the connecting column
  • Connecting ribs are arranged below the sealing plate and on one side of the sealing plate;
  • a first fastening plate the first fastening plate is arranged below the connecting rib, an accommodation space is formed between the first fastening plate and the sealing plate, the first fastening plate is close to the sealing plate There is a fastener on the surface, and the first buckle Plywood has avoidance gaps.
  • the snap-on integrated sealing nail is inserted into the liquid injection hole on the cover plate and pressed downward, the elastic part contracts, and the sealing nail seat and the elastic part are jointly used to seal the liquid injection hole on the cover plate.
  • the sealing plate is used to seal the liquid injection hole on the lower plastic, and then the sealing nail is rotated so that the fastening part set on the first fastening plate can just snap into the fastening groove set on the second fastening plate, and the elastic part After rebounding, the sealing effect is achieved and the sealing nail seat and the top cover piece are on the same level, thereby achieving the purpose of sealing the liquid injection hole on the cover plate.
  • the buckle-type integrated sealing nail of this application integrates the rubber nail and the sealing nail into one body, which reduces the steps of placing the rubber nail first and then the sealing nail, and improves the sealing efficiency after liquid injection; this application does not require a laser welding process. , reducing energy consumption and equipment footprint; and avoiding the occurrence of undesirable phenomena such as sealing nail welding cracks and improving process efficiency; in a vacuum environment, the electrolyte can be replenished or replaced by unscrewing the sealing nail
  • the new sealing nail is very convenient and increases the service life of the battery core.
  • the sealing nail in the existing technology cannot be reopened to replenish the electrolyte or replace with a new sealing nail because it is welded to the cover plate.
  • sealing nail according to the above embodiment of the present application may also have the following additional technical features:
  • the sealing nail seat, the connecting post, the elastic part and the sealing plate are arranged coaxially.
  • the area of the avoidance gap is 20%-30%, preferably 25%, of the circular area where the first fastening plate is located.
  • a groove is provided on a surface of the sealing nail base away from the elastic part for placing a screwdriver.
  • the groove is a cross groove.
  • one end of the groove is provided with a round opening.
  • the fastener is hemispherical.
  • the height of the fastener is 1.2-1.5mm, and the diameter of the fastener is 1.1-1.3mm.
  • the ratio of the size of the sealing nail seat to the elastic part is 1:(0.3-3).
  • the dimensions of the elastic part and the connecting column are equal.
  • the ratio of the size of the elastic part to the connecting column is 1:(0.5-2).
  • the material of the elastic part is thermoplastic vulcanized rubber or fluorine rubber.
  • rubber layers are provided on the surfaces of the sealing plate, the connecting rib, the first fastening plate and the fastening part.
  • an end cap assembly is proposed.
  • the end cap assembly package include:
  • the end plate is provided with a first liquid injection hole, the inner diameter of the first liquid injection hole is equal to the outer diameter of the sealing nail seat, the first liquid injection hole is used to accommodate the sealing nail seat and the elastic part;
  • the lower plastic is arranged below the end plate, the lower plastic is provided with a second liquid injection hole, the inner diameter of the second liquid injection hole is equal to the outer diameter of the sealing plate, the third liquid injection hole is Two liquid injection holes are used to accommodate the sealing plate;
  • a second fastening plate is provided on the surface of the lower plastic away from the end plate, and at least part of the second fastening plate is provided directly below the second injection hole;
  • the size of the second fastening plate matches the size of the avoidance gap, so that the second fastening plate can pass through the avoidance gap
  • the surface of the second fastening plate away from the lower plastic is provided with a fastening groove, and the size of the fastening groove matches the size of the fastening part so that the fastening part can be fastened on the in the snap groove;
  • the thickness of the second fastening plate is not less than the height of the accommodation space between the first fastening plate and the sealing plate.
  • the snap-on integrated sealing nail cooperates with other components of the end cover assembly to achieve sealing of the liquid injection hole on the cover plate.
  • the purpose of sealing is to reduce the steps of placing rubber nails first and then sealing nails, and improve the sealing efficiency after liquid injection; this application does not require laser welding process, which reduces energy consumption and equipment footprint; and It avoids the occurrence of undesirable phenomena such as sealing nail welding cracks and improves the process excellence rate; in a vacuum environment, by unscrewing the sealing nail, you can replenish the electrolyte or replace the sealing nail with a new one, which is very convenient and increases the use time of the battery core.
  • the sealing nail in the prior art cannot be reopened to replenish the electrolyte or replaced with a new sealing nail because it is welded to the cover plate.
  • an energy storage device in a third aspect of the present application, includes a battery core, and the battery core includes the end cap assembly described in the above embodiment. Therefore, the energy storage device has all the advantages of the end cover assembly described in the above embodiment. Specifically, the sealing of the liquid injection hole of the battery core does not require a laser welding process, which not only improves the sealing efficiency after the battery core is filled with liquid , and avoids the occurrence of welding cracks and other undesirable phenomena, improving the process excellence rate; at the same time, it improves the convenience of replenishing electrolyte or replacing new sealing nails of the battery core.
  • an electrical device is proposed.
  • the electrical equipment includes the energy storage device described in the above embodiment.
  • the performance of the energy storage device of electrical equipment is improved, further meeting the needs of consumers.
  • Figure 1 is a front view of a sealing nail according to an embodiment of the present application.
  • Figure 2 is a cross-sectional view of a sealing nail according to an embodiment of the present application.
  • Figure 3 is a top view of a sealing nail according to an embodiment of the present application.
  • Figure 4 is a front view of an end cap assembly according to an embodiment of the present application.
  • Figure 5 is a rear view of the end cap assembly according to an embodiment of the present application.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • the first characteristic is in the second characteristic
  • the words “above”, “above” and “above” may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • the above-mentioned sealing nail includes: a sealing nail base 1; a connecting column 2, the above-mentioned connecting column 2 is provided below the sealing nail base 1; an elastic part 3, the above-mentioned elastic part 3 is sleeved On the periphery of the above-mentioned connecting column 2; the sealing plate 4, the above-mentioned sealing plate 4 is arranged below the above-mentioned connecting column 2; the above-mentioned connecting rib 5 is arranged below the above-mentioned sealing plate 4, and is arranged on the above-mentioned sealing plate 4 One side; the first fastening plate 6, the first fastening plate 6 is arranged below the connecting rib 5, an accommodation space is formed between the first fastening plate 6 and the sealing plate 4, the proximity of the first fastening plate 6
  • the sealing plate 4 is provided with a fastening member 7 on its surface,
  • the buckle-type integrated sealing nail of this application integrates the rubber nail and the sealing nail into one body, which reduces the steps of placing the rubber nail first and then the sealing nail, and improves the sealing efficiency after liquid injection; this application does not require a laser welding process. , reducing energy consumption and equipment footprint; and avoiding the occurrence of undesirable phenomena such as sealing nail welding cracks and improving process efficiency; in a vacuum environment, the electrolyte can be replenished or replaced by unscrewing the sealing nail
  • the new sealing nail is very convenient and increases the service life of the battery core.
  • the sealing nail in the existing technology cannot be reopened to replenish the electrolyte or replace with a new sealing nail because it is welded to the cover plate.
  • the sealing nail when inserting the sealing nail into the liquid injection hole on the cover plate and pressing down, it is necessary to ensure that the position of the avoidance notch 10 on the first fastening plate 6 just corresponds to the position of the second fastening plate on the lower plastic, so that The above-mentioned second fastening plate can pass through the above-mentioned avoidance gap 10 smoothly.
  • the elastic part 3 contracts.
  • the sealing nail base 1 and the elastic part 3 are jointly sealed to the liquid injection hole on the end plate 11.
  • the sealing plate 4 is sealed to the liquid injection hole on the lower plastic.
  • the sealing nail is rotated to make the third
  • the two fastening plates are rotated into the accommodation space formed between the above-mentioned first fastening plate 6 and the above-mentioned sealing plate 4, so that the fastening parts 7 provided on the first fastening plate 6 can just fasten the fastening parts 7 provided on the second fastening plate.
  • the elastic part 3 has a sealing effect after rebounding, and makes the sealing nail base 1 and the top cover sheet on the same level, thereby achieving the purpose of sealing the liquid injection hole on the cover plate.
  • the diameter of the circle where the elastic part is located can be equal to or slightly smaller than the diameter of the circle where the sealing nail seat is located, as long as it is ensured that the sealing nail is inserted into the liquid injection hole on the cover plate and pressed down, and when the elastic part is squeezed, At least part of the elastic part can offset the side wall of the liquid injection hole to achieve the purpose of sealing the liquid injection hole.
  • the diameter of the circle where the sealing plate is located must be smaller than the diameter of the circle where the elastic part is located.
  • the above-mentioned sealing nail seat 1, the above-mentioned connecting column 2, the above-mentioned elastic part 3 and the above-mentioned sealing plate 4 are arranged coaxially.
  • the diameter of the circle where the above-mentioned sealing nail seat 1 is located is equal to the diameter of the circle where the above-mentioned elastic part 3 is located.
  • the above-mentioned sealing plate 4 The diameter of the circle where the elastic part 3 is located is smaller than the diameter of the circle where the elastic part 3 is located.
  • the sealing nail base 1 and the elastic part 3 are jointly sealed to the liquid injection hole on the end plate 11, and the sealing plate 4 is sealed to the liquid injection hole on the lower plastic, therefore, the sealing nail base 1 and the elastic part 3 are shape The shape and size depend on the shape and size of the first injection hole on the end plate 11, and the shape and size of the sealing plate 4 depend on the shape and size of the second injection hole on the lower plastic.
  • the area of the avoidance gap 10 can be 20%-30% of the circular area where the first fastening plate 6 is located (for example, it can be 20/22/ 24/26/28/30%), preferably 25%, thereby ensuring that the second snap-fit plate provided on the lower plastic can pass through the avoidance gap 10 smoothly, in other words, it can ensure that the buckle-type integrated sealing nail can smoothly Inserted into the liquid injection hole on the cover plate, the fastening effect between the first fastening plate 6 and the second fastening plate can be ensured.
  • a groove 8 is provided on the surface of the above-mentioned sealing nail base 1 away from the above-mentioned elastic part 3 for placing a pneumatic screwdriver to facilitate the pneumatic screwdriver to take and place the seal. nail.
  • the groove 8 can be configured as a cross groove, which is suitable for a pneumatic cross screwdriver, and further facilitates the use of a pneumatic screwdriver to pick and place the sealing nail.
  • one end of the above-mentioned groove 8 is provided with a round guide opening 9, thereby facilitating the positioning of the sealing nail.
  • the above-mentioned fastening member 7 is hemispherical, so that the fastening effect of the fastening member 7 is better.
  • the height of the above-mentioned fastener 7 is 1.2-1.5mm (for example, it can be 1.2/1.3/1.4/1.5mm)
  • the diameter of the above-mentioned fastener 7 is 1.1-1.3mm (for example, it can be 1.1/1.2/1.3 mm), thereby further ensuring the fastening effect of the fastening component 7.
  • the ratio of the size of the sealing nail seat to the elastic part can be 1:(0.3-3), that is, the ratio of the thickness of the sealing nail seat to the elastic part can be 1:( 0.3-3), for example, it can be 1:0.3/0.5/1/1.5/2/2.5/3.
  • the dimensions of the elastic part and the connecting column are equal. Therefore, the elastic part can be set close to the connecting column on the periphery of the connecting column, further improving the sealing nail. Tightness.
  • the size ratio of the elastic part to the connecting column may be 1:(0.5-2), that is, the radius ratio of the elastic part to the connecting column may be 1:(0.5-2 ), for example, can be 1:0.5/1/1.5/2, thereby ensuring that the elastic part provides effective shrinkage elasticity for the sealing nail, further improving the sealing performance of the sealing nail, and ensuring that the sealing nail Overall mechanical strength.
  • the specific type of material of the elastic part 3 is not particularly limited, as long as it has a good sealing effect and can shrink after being stressed.
  • the material of the elastic part 3 is Thermoplastic vulcanized rubber or fluororubber.
  • the above-mentioned sealing nail seat 1, connecting column 2, sealing plate 4, connecting rib 5, first fastening plate 6 and fastening part 7 can be made of aluminum, or other materials that meet their functional requirements can be selected. Material.
  • the sealing effect of the sealing nail can be achieved by spraying a thin layer of rubber on the surfaces of the sealing plate 4, the connecting rib 5, the first fastening plate 6 and the fastening part 7. .
  • an end cap assembly is proposed.
  • the above-mentioned end cap assembly includes: the sealing nail mentioned in any of the above embodiments; the end plate 11, the above-mentioned end plate 11 is provided with a first liquid injection hole 13, and the inner diameter of the above-mentioned first liquid injection hole 13 is Equal to the outer diameter of the above-mentioned sealing nail seat 1, the above-mentioned first liquid injection hole 13 is used to accommodate the above-mentioned sealing nail seat 1 and the above-mentioned elastic part 3; the lower plastic 12 is arranged below the end plate 11, the above-mentioned lower plastic 12 A second liquid injection hole 14 is provided on the top.
  • the inner diameter of the second liquid injection hole 14 is equal to the outer diameter of the above-mentioned sealing plate 4.
  • the above-mentioned second liquid injection hole 14 is used to accommodate the above-mentioned sealing plate 4; the above-mentioned lower plastic 12 is away from the above-mentioned end.
  • a second fastening plate 15 is provided on the surface of the plate 11, and at least part of the second fastening plate 15 is arranged directly below the second liquid injection hole 14; the size of the second fastening plate 15 is consistent with the size of the avoidance gap 10.
  • the second fastening plate 15 can pass through the avoidance gap 10; the surface of the second fastening plate 15 away from the lower plastic 12 is provided with a fastening groove 16, the size of the fastening groove 16 and the fastening
  • the size of the parts 7 matches, so that the above-mentioned fastening parts 7 can be fastened in the above-mentioned fastening grooves 16; the thickness of the above-mentioned second fastening plate 15 is not less than the accommodation between the above-mentioned first fastening plate 6 and the above-mentioned sealing plate 4 The height of the space.
  • the elastic part 3 has a sealing effect after rebounding, and the sealing nail base 1 and the top cover sheet are on the same level, thereby realizing the cover alignment.
  • the injection holes on the plate are for sealing purposes.
  • the thickness of the second fastening plate 15 is not less than the height of the accommodation space between the first fastening plate 6 and the sealing plate 4. Specifically, the thickness of the second fastening plate 15 may be equal to or slightly larger than the height of the accommodation space between the first fastening plate 6 and the sealing plate 4. Greater than the height of the accommodation space between the first snap plate 6 and the sealing plate 4, when the sealing nail is rotated, the upper surface of the second snapping plate 15 acts on the lower surface of the sealing plate 4, pushing the elastic part 3 to compress slightly upward. , so that the second fastening plate 15 can be smoothly rotated into the accommodation space formed between the above-mentioned first fastening plate 6 and the above-mentioned sealing plate 4 .
  • the sealing nail when the end cover assembly of the present application seals the liquid injection hole, the sealing nail cooperates with other components of the end cover assembly to achieve the purpose of sealing the liquid injection hole on the cover plate.
  • the sealing nail in the existing technology is welded to the cover plate. It is impossible to reopen the electrolyte or replace the sealing nail with a new one.
  • an energy storage device in a third aspect of the present application, includes a battery core, and the battery core includes the end cap assembly described in the above embodiment. Therefore, the above-mentioned battery core has all the advantages of the above-mentioned end cover assembly of the above embodiment. Specifically, the sealing of the liquid injection hole of the battery core does not require a laser welding process, which not only improves the sealing efficiency after the battery core is filled with liquid, but also avoids It eliminates the occurrence of welding cracks and other undesirable phenomena and improves the process excellence rate; at the same time, it improves the convenience of replenishing electrolyte or replacing new sealing nails of the battery core.
  • the energy storage device may include one or more cells, and the plurality of cells may be electrically connected in series, parallel, or series-parallel.
  • the energy storage device may include one or more battery packs, and the multiple battery packs may be electrically connected in series, parallel, or series-parallel.
  • a battery pack may contain one or more cells. In a battery pack, multiple cells can be electrically connected in series, parallel or series-parallel.
  • an electrical device is proposed.
  • the above-mentioned electrical equipment includes the energy storage device described in the above embodiments.
  • the performance of the energy storage device of electrical equipment is improved, further meeting the needs of consumers.
  • electrical equipment includes but is not limited to vehicles, energy storage equipment, drones, etc.
  • references to the terms “one embodiment,” “some embodiments,” “an example,” “specific examples,” or “some examples” or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

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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

密封钉、端盖组件、储能装置及用电设备，其中，密封钉包括密封钉座（1）；连接柱（2），连接柱（2）设置密封钉座（1）的下方；弹性部（3），弹性部(3)套设在连接柱（2）的外围；密封板（4），密封板（4）设置在连接柱（2）的下方；连接筋（5），连接筋（5）设置在密封板（4）一侧的下方；第一扣合板（6），第一扣合板（6）设置在连接筋（5）的下方，第一扣合板（6）与密封板（4）之间形成有容纳空间，第一扣合板（6）的靠近密封板（4）的表面上设有扣合件（7），第一扣合板（6）具有避让缺口（10）。

Description

密封钉、端盖组件、储能装置及用电设备
优先权信息
本申请请求2022年07月29日向中国国家知识产权局提交的、专利申请号为202210910501.8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，具体而言，本申请涉及密封钉、端盖组件、储能装置及用电设备。
背景技术
在动力电池的制造过程中，在完成注液工序以后，需要对盖板片上的注液孔进行密封，以防止电解液的溢出，否则会出现电解液泄露等危险的情况。现有技术中一般采用先放胶钉，再放密封钉，然后采用激光焊接将密封钉焊接在盖板上。但是现有技术存在以下缺陷：(1)需要分步骤安装各个部件，制备过程繁琐，影响产能；(2)采用激光焊接将密封钉焊接在盖板上，该过程耗费能量较大；(3)激光焊接存在不稳定性，易产生密封钉裂纹等焊接问题。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本申请的目的在于提出密封钉、端盖组件、储能装置及用电设备。本申请的卡扣式一体密封钉集胶钉与密封钉于一体，减少了先放胶钉再放密封钉的步骤；本申请不需要激光焊接工序，且避免了密封钉焊接裂纹等不良现象的出现；在真空环境下，拧出该密封钉即可进行补充电解液或者更换新密封钉，非常方便，增加了电芯使用时长。
在本申请的一个方面，提出了一种密封钉。根据本申请的实施例，所述密封钉包括：
密封钉座；
连接柱，所述连接柱设置密封钉座的下方；
弹性部，所述弹性部套设在所述连接柱的外围；
密封板，所述密封板设置在所述连接柱的下方；
连接筋，所述连接筋设置在所述密封板的下方，且设置在所述密封板的一侧；
第一扣合板，所述第一扣合板设置在所述连接筋的下方，所述第一扣合板与所述密封板之间形成有容纳空间，所述第一扣合板的靠近所述密封板的表面上设有扣合件，所述第一扣 合板具有避让缺口。
根据本申请上述实施例的密封钉，将卡扣式一体密封钉插入盖板上的注液孔内往下按压，弹性部收缩，密封钉座和弹性部共同用于密封盖板上的注液孔，密封板用于密封下塑胶上的注液孔，然后旋转密封钉，使第一扣合板上设置的扣合件恰好能扣合在第二扣合板上设置的扣合槽中，弹性部回弹后起到密封效果并使密封钉座与顶盖片处于同一水平面上，实现了对盖板上的注液孔进行密封的目的。由此，本申请的卡扣式一体密封钉集胶钉与密封钉于一体，减少了先放胶钉再放密封钉的步骤，提高了注液后的密封效率；本申请不需要激光焊接工序，减少了能耗，减少了设备占地面积；且避免了密封钉焊接裂纹等不良现象的出现，提高了工序优率；在真空环境下，拧出该密封钉即可进行补充电解液或者更换新密封钉，非常方便，增加了电芯使用时长，而现有技术中的密封钉由于焊接在盖板上无法进行重新打开补充电解液或者更换新的密封钉。
另外，根据本申请上述实施例的密封钉还可以具有如下附加的技术特征：
在本申请的一些实施例中，所述密封钉座、所述连接柱、所述弹性部和所述密封板同轴设置。
在本申请的一些实施例中，沿所述第一扣合板所在平面，所述避让缺口的面积为所述第一扣合板所在圆面积的20％-30％，优选25％。
在本申请的一些实施例中，所述密封钉座的远离所述弹性部的表面上设有凹槽，用于放置螺丝刀。
在本申请的一些实施例中，所述凹槽为十字凹槽。
在本申请的一些实施例中，所述凹槽的一端设有导圆口。
在本申请的一些实施例中，所述扣合件为半球形。
在本申请的一些实施例中，所述扣合件的高度为1.2-1.5mm，所述扣合件的直径为1.1-1.3mm。
在本申请的一些实施例中，沿高度方向，所述密封钉座与所述弹性部的尺寸之比为1:(0.3-3)。
在本申请的一些实施例中，沿高度方向，所述弹性部与所述连接柱的尺寸相等。
在本申请的一些实施例中，沿径向方向，所述弹性部与所述连接柱的尺寸之比为1:(0.5-2)。
在本申请的一些实施例中，所述弹性部的材质为热塑性硫化橡胶或者氟橡胶。
在本申请的一些实施例中，所述密封板、所述连接筋、所述第一扣合板和所述扣合件的表面均设有橡胶层。
在本申请的第二个方面，提出了一种端盖组件。根据本申请的实施例，所述端盖组件包 括：
以上任一实施例所述的密封钉；
端板，所述端板上设有第一注液孔，所述第一注液孔的内径等于所述密封钉座的外径，所述第一注液孔用于容纳所述密封钉座和所述弹性部；
下塑胶，所述下塑胶设置在所述端板的下方，所述下塑胶上设有第二注液孔，所述第二注液孔的内径等于所述密封板的外径，所述第二注液孔用于容纳所述密封板；
所述下塑胶远离所述端板的表面上设有第二扣合板，且至少部分所述第二扣合板设置在所述第二注液孔的正下方；
所述第二扣合板的尺寸和避让缺口的尺寸相匹配，以便使所述第二扣合板能穿过所述避让缺口；
所述第二扣合板的远离所述下塑胶的表面上设有扣合槽，所述扣合槽的尺寸与扣合件的尺寸相匹配，以便使所述扣合件能扣合在所述扣合槽中；
所述第二扣合板的厚度不小于所述第一扣合板与所述密封板之间的容纳空间的高度。
根据本申请上述实施例的端盖组件，本申请的端盖组件在密封注液孔时，卡扣式一体密封钉与端盖组件的其他部件相配合，实现对盖板上的注液孔进行密封的目的，由此，减少了先放胶钉再放密封钉的步骤，提高了注液后的密封效率；本申请不需要激光焊接工序，减少了能耗，减少了设备占地面积；且避免了密封钉焊接裂纹等不良现象的出现，提高了工序优率；在真空环境下，拧出该密封钉即可进行补充电解液或者更换新密封钉，非常方便，增加了电芯使用时长，而现有技术中的密封钉由于焊接在盖板上无法进行重新打开补充电解液或者更换新的密封钉。
在本申请的第三个方面，提出了一种储能装置。根据本申请的实施例，所述储能装置包括电芯，所述电芯包括以上实施例所述的端盖组件。由此，所述储能装置具有以上实施例所述端盖组件的所有优点，具体来说，电芯的注液孔的密封不需要激光焊接工序，不仅提高了电芯注液后的密封效率，而且避免了焊接裂纹等不良现象的出现，提高了工序优率；同时，提高了电芯在补充电解液或者更换新密封钉时的便利性。
在本申请的第四个方面，提出了一种用电设备。根据本申请的实施例，所述用电设备包括以上实施例所述的储能装置。由此，提高了用电设备的储能装置性能，进一步满足了消费者的需求。
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例的描述中将变得明显和容易理解，其中：
图1是根据本申请实施例的密封钉的主视图；
图2是根据本申请实施例的密封钉的剖视图；
图3是根据本申请实施例的密封钉的俯视图；
图4是根据本申请实施例的端盖组件的正面图；
图5是根据本申请实施例的端盖组件的反面图。
附图标注：
1-密封钉座，2-连接柱，3-弹性部，4-密封板，5-连接筋，6-第一扣合板，7-扣合件，8-
凹槽，9-导圆口，10-避让缺口，11-端板，12-下塑胶，13-第一注液孔，14-第二注液孔，15-第二扣合板，16-扣合槽。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号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例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特 征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，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”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本申请的一个方面，提出了一种密封钉。根据本申请的实施例，参考附图1-3，上述密封钉包括：密封钉座1；连接柱2，上述连接柱2设置密封钉座1的下方；弹性部3，上述弹性部3套设在上述连接柱2的外围；密封板4，上述密封板4设置在上述连接柱2的下方；连接筋5，上述连接筋5设置在上述密封板4的下方，且设置在上述密封板4的一侧；第一扣合板6，上述第一扣合板6设置在上述连接筋5的下方，上述第一扣合板6与上述密封板4之间形成有容纳空间，上述第一扣合板6的靠近上述密封板4的表面上设有扣合件7，上述第一扣合板6具有避让缺口10。由此，本申请的卡扣式一体密封钉集胶钉与密封钉于一体，减少了先放胶钉再放密封钉的步骤，提高了注液后的密封效率；本申请不需要激光焊接工序，减少了能耗，减少了设备占地面积；且避免了密封钉焊接裂纹等不良现象的出现，提高了工序优率；在真空环境下，拧出该密封钉即可进行补充电解液或者更换新密封钉，非常方便，增加了电芯使用时长，而现有技术中的密封钉由于焊接在盖板上无法进行重新打开补充电解液或者更换新的密封钉。
具体地，将密封钉插入盖板上的注液孔内往下按压时，需要确保第一扣合板6上的避让缺口10的位置刚好与下塑胶上的第二扣合板的位置相对应，以便使上述第二扣合板能顺利穿过上述避让缺口10。密封钉受到按压后弹性部3收缩，密封钉座1和弹性部3共同密封于端板11上的注液孔，密封板4密封于下塑胶上的注液孔，然后旋转密封钉，使第二扣合板转至上述第一扣合板6和上述密封板4之间形成的容纳空间内，从而使第一扣合板6上设置的扣合件7恰好能扣合在第二扣合板上设置的扣合槽中，弹性部3回弹后起到密封效果，并使密封钉座1与顶盖片处于同一水平面上，从而实现了对盖板上的注液孔进行密封的目的。
具体地，上述弹性部所在圆的直径可以等于或者稍微小于上述密封钉座所在圆的直径，只要能确保将密封钉插入盖板上的注液孔内往下按压，弹性部受到挤压时，弹性部的至少部分和注液孔的侧壁相抵，达到密封注液孔的目的即可。
可以理解的是，由于弹性部套设在连接柱的外围，密封板所在圆的直径必然小于弹性部所在圆的直径。
具体地，上述密封钉座1、上述连接柱2、上述弹性部3和上述密封板4同轴设置，上述密封钉座1所在圆的直径等于上述弹性部3所在圆的直径，上述密封板4所在圆的直径小于上述弹性部3所在圆的直径。可以理解的是，由于密封钉座1和弹性部3共同密封于端板11上的注液孔，密封板4密封于下塑胶上的注液孔，因此，密封钉座1和弹性部3的形状 和尺寸取决于端板11上的第一注液孔的形状和尺寸，密封板4的形状和尺寸取决于下塑胶上的第二注液孔的形状和尺寸。
根据本申请的一个具体实施例，沿上述第一扣合板6所在平面，上述避让缺口10的面积可以为上述第一扣合板6所在圆面积的20％-30％(例如可以为20/22/24/26/28/30％)，优选25％，由此，既能确保下塑胶上设置的第二扣合板能顺利穿过上述避让缺口10，换言之能确保该卡扣式一体密封钉能顺利插入盖板上的注液孔中，又能保证第一扣合板6和第二扣合板之间的扣合效果。
根据本申请的又一个具体实施例，参考附图1和3，上述密封钉座1的远离上述弹性部3的表面上设有凹槽8，用于放置气动螺丝刀，方便气动螺丝刀取放该密封钉。进一步地，可将该凹槽8设置为十字凹槽，由此适用于气动十字螺丝刀，进一步方便动螺丝刀取放该密封钉。更进一步地，上述凹槽8的一端设有导圆口9，由此，方便对该密封钉进行定位。
根据本申请的又一个具体实施例，参考附图1和2，上述扣合件7为半球形，由此，使该扣合件7的扣合效果较好。优选地，上述扣合件7的高度为1.2-1.5mm(例如可以为1.2/1.3/1.4/1.5mm)，上述扣合件7的直径为1.1-1.3mm(例如可以为1.1/1.2/1.3mm)，由此，进一步保证了该扣合件7的扣合效果。
根据本申请的又一个具体实施例，沿高度方向，密封钉座与弹性部的尺寸之比可以为1:(0.3-3)，即密封钉座与弹性部的厚度之比可以为1:(0.3-3)，例如可以为1:0.3/0.5/1/1.5/2/2.5/3，由此，既能确保该卡扣式一体密封钉扣合在盖板上的注液孔后，其盖板表面的机械强度，又能确保弹性部为该密封钉提供有效的收缩弹性功能，进一步提高了该密封钉的密封性。需要说明的是，密封钉座具有一定的机械强度，其材质一般采用金属之类的。
根据本申请的又一个具体实施例，沿高度方向，弹性部与连接柱的尺寸相等，由此，可将弹性部紧贴着连接柱套设在连接柱的外围，进一步提高了该密封钉的密封性。
根据本申请的又一个具体实施例，沿径向方向，弹性部与连接柱的尺寸比可以为1:(0.5-2)，即弹性部与连接柱的半径比可以为1:(0.5-2)，例如可以为1:0.5/1/1.5/2，由此，既能确保弹性部为该密封钉提供有效的收缩弹性功能，进一步提高了该密封钉的密封性，又能确保该密封钉整体的机械强度。
在本申请的实施例中，上述弹性部3的材质的具体种类并不受特别限制，只要其密封效果较好且受力后能够收缩就可，作为一个具体示例，上述弹性部3的材质为热塑性硫化橡胶或者氟橡胶。
作为一个具体示例，上述密封钉座1、连接柱2、密封板4、连接筋5、第一扣合板6和扣合件7的材质均可选择铝材质，也可以选用其他满足其功能需求的材质。为了进一步增强 该密封钉的密封效果，根据本申请的又一个具体实施例，可在上述密封板4、上述连接筋5、上述第一扣合板6和上述扣合件7的表面喷涂薄薄一层橡胶层。
在本申请的第二个方面，提出了一种端盖组件。根据本申请的实施例，上述端盖组件包括：以上任一实施例上述的密封钉；端板11，上述端板11上设有第一注液孔13，上述第一注液孔13的内径等于上述密封钉座1的外径，上述第一注液孔13用于容纳上述密封钉座1和上述弹性部3；下塑胶12，下塑胶12设置在端板11的下方，上述下塑胶12上设有第二注液孔14，上述第二注液孔14的内径等于上述密封板4的外径，上述第二注液孔14用于容纳上述密封板4；上述下塑胶12远离上述端板11的表面上设有第二扣合板15，且至少部分上述第二扣合板15设置在上述第二注液孔14的正下方；上述第二扣合板15的尺寸和避让缺口10的尺寸相匹配，以便使上述第二扣合板15能穿过上述避让缺口10；上述第二扣合板15的远离上述下塑胶12的表面上设有扣合槽16，上述扣合槽16的尺寸与扣合件7的尺寸相匹配，以便使上述扣合件7能扣合在上述扣合槽16中；上述第二扣合板15的厚度不小于上述第一扣合板6与上述密封板4之间的容纳空间的高度。
具体地，将上述密封钉扣合在盖板上的注液孔中的具体过程如下：
(1)首先将该密封钉插入盖板上的注液孔内往下按压，将密封钉插入盖板上的注液孔内往下按压时，需要确保第一扣合板6上的避让缺口10刚好与下塑胶12上的第二扣合板15相对应，以便使上述第二扣合板15能顺利穿过上述避让缺口10。密封钉受到按压后弹性部3收缩，密封钉座1和弹性部3共同密封于端板11上的注液孔，密封板4密封于下塑胶12上的注液孔。
(2)然后旋转该密封钉，使第一扣合板6转至上述第一扣合板6和上述密封板4之间形成的容纳空间内，从而使第一扣合板6上设置的扣合件7恰好能扣合在第二扣合板15上设置的扣合槽16中，弹性部3回弹后起到密封效果，并使密封钉座1与顶盖片处于同一水平面上，从而实现了对盖板上的注液孔进行密封的目的。
需要说明的是，上述第二扣合板15的厚度不小于上述第一扣合板6与上述密封板4之间的容纳空间的高度，具体来说，上述第二扣合板15的厚度可以等于或者稍微大于上述第一扣合板6与上述密封板4之间的容纳空间的高度，当旋转密封钉时，第二扣合板15的上表面作用于密封板4的下表面，推动弹性部3稍微向上压缩，使第二扣合板15顺利转至上述第一扣合板6和上述密封板4之间形成的容纳空间内。当第一扣合板6上设置的扣合件7扣合在第二扣合板15上设置的扣合槽16内后，弹性部3回弹，从而将第二扣合板15牢固地扣合在上述密封钉中。
根据本申请上述实施例的端盖组件，本申请的端盖组件在密封注液孔时，密封钉与端盖组件的其他部件相配合，实现对盖板上的注液孔进行密封的目的，由此，减少了先放胶钉再 放密封钉的步骤，提高了注液后的密封效率；本申请不需要激光焊接工序，减少了能耗，减少了设备占地面积；且避免了密封钉焊接裂纹等不良现象的出现，提高了工序优率；在真空环境下，拧出该密封钉即可进行补充电解液或者更换新密封钉，非常方便，增加了电芯使用时长，而现有技术中的密封钉由于焊接在盖板上无法进行重新打开补充电解液或者更换新的密封钉。
在本申请的第三个方面，提出了一种储能装置。根据本申请的实施例，储能装置包括电芯，上述电芯包括以上实施例上述的端盖组件。由此，上述电芯具有以上实施例上述端盖组件的所有优点，具体来说，电芯的注液孔的密封不需要激光焊接工序，不仅提高了电芯注液后的密封效率，而且避免了焊接裂纹等不良现象的出现，提高了工序优率；同时，提高了电芯在补充电解液或者更换新密封钉时的便利性。
具体地，在一个实施方式中，储能装置可以包括一个或多个电芯，多个电芯可以以串联、并联或串并联的方式进行电连接。
在一个实施方式，储能装置可以包括一个或多个电池包，多个电池包可以以串联、并联或串并联的方式进行电连接。一个电池包可以包括一个或多个电芯。在一个电池包内，多个电芯可以以串联、并联或串并联的方式进行电连接。
在本申请的第四个方面，提出了一种用电设备。根据本申请的实施例，上述用电设备包括以上实施例上述的储能装置。由此，提高了用电设备的储能装置性能，进一步满足了消费者的需求。
具体地，用电设备包括但不限于车辆、储能设备、无人机等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例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个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (13)

  1. 一种密封钉，其特征在于，包括：
    密封钉座；
    连接柱，所述连接柱设置密封钉座的下方；
    弹性部，所述弹性部套设在所述连接柱的外围；
    密封板，所述密封板设置在所述连接柱的下方；
    连接筋，所述连接筋设置在所述密封板的下方，且设置在所述密封板的一侧；
    第一扣合板，所述第一扣合板设置在所述连接筋的下方，所述第一扣合板与所述密封板之间形成有容纳空间，所述第一扣合板的靠近所述密封板的表面上设有扣合件，所述第一扣合板具有避让缺口。
  2. 根据权利要求1所述的密封钉，其特征在于，所述密封钉座、所述连接柱、所述弹性部和所述密封板同轴设置。
  3. 根据权利要求2所述的密封钉，其特征在于，沿所述第一扣合板所在平面，所述避让缺口的面积为所述第一扣合板所在圆面积的20％-30％，优选25％。
  4. 根据权利要求1-3任一项所述的密封钉，其特征在于，所述密封钉座的远离所述弹性部的表面上设有凹槽，用于放置螺丝刀；
    可选地，所述凹槽为十字凹槽；
    可选地，所述凹槽的一端设有导圆口。
  5. 根据权利要求1-4任一项所述的密封钉，其特征在于，所述扣合件为半球形；
    可选地，所述扣合件的高度为1.2-1.5mm，所述扣合件的直径为1.1-1.3mm。
  6. 根据权利要求1-5任一项所述的密封钉，其特征在于，沿高度方向，所述密封钉座与所述弹性部的尺寸之比为1:(0.3-3)。
  7. 根据权利要求1-6任一项所述的密封钉，其特征在于，沿高度方向，所述弹性部与所述连接柱的尺寸相等。
  8. 根据权利要求1-7任一项所述的密封钉，其特征在于，沿径向方向，所述弹性部与所述连接柱的尺寸之比为1:(0.5-2)。
  9. 根据权利要求1-8任一项所述的密封钉，其特征在于，所述弹性部的材质为热塑性硫化橡胶或者氟橡胶。
  10. 根据权利要求1-9任一项所述的密封钉，其特征在于，满足以下条件的至少之一：
    所述密封板的表面设有橡胶层；
    所述连接筋的表面设有橡胶层；
    所述第一扣合板的表面设有橡胶层；
    所述扣合件的表面设有橡胶层。
  11. 一种端盖组件，其特征在于，包括：
    权利要求1-10任一项所述的密封钉；
    端板，所述端板上设有第一注液孔，所述第一注液孔的内径等于所述密封钉座的外径，所述第一注液孔用于容纳所述密封钉座和所述弹性部；
    下塑胶，所述下塑胶设置在所述端板的下方，所述下塑胶上设有第二注液孔，所述第二注液孔的内径等于所述密封板的外径，所述第二注液孔用于容纳所述密封板；
    所述下塑胶远离所述端板的表面上设有第二扣合板，且至少部分所述第二扣合板设置在所述第二注液孔的正下方；
    所述第二扣合板的尺寸不大于避让缺口的尺寸，以便使所述第二扣合板能穿过所述避让缺口；
    所述第二扣合板的远离所述下塑胶的表面上设有扣合槽，所述扣合槽的尺寸与扣合件的尺寸相匹配，以便使所述扣合件能扣合在所述扣合槽中；
    所述第二扣合板的厚度不小于所述第一扣合板与所述密封板之间的容纳空间的高度。
  12. 一种储能装置，其特征在于，包括电芯，所述电芯包括权利要求11所述的端盖组件。
  13. 一种用电设备，其特征在于，具有权利要求12所述的储能装置。
PCT/CN2023/107846 2022-07-29 2023-07-18 密封钉、端盖组件、储能装置及用电设备 Ceased WO2024022155A1 (zh)

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