WO2023240967A1 - 电化学装置及电子设备 - Google Patents

电化学装置及电子设备 Download PDF

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Publication number
WO2023240967A1
WO2023240967A1 PCT/CN2022/140413 CN2022140413W WO2023240967A1 WO 2023240967 A1 WO2023240967 A1 WO 2023240967A1 CN 2022140413 W CN2022140413 W CN 2022140413W WO 2023240967 A1 WO2023240967 A1 WO 2023240967A1
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WO
WIPO (PCT)
Prior art keywords
hole
wall
connecting piece
electrochemical device
cover
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Application number
PCT/CN2022/140413
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English (en)
French (fr)
Inventor
杨建辉
Original Assignee
宁德新能源科技有限公司
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Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Priority to EP22871131.3A priority Critical patent/EP4322319A1/en
Priority to US18/129,314 priority patent/US20230411747A1/en
Publication of WO2023240967A1 publication Critical patent/WO2023240967A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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 of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/157—Inorganic material
    • H01M50/159—Metals
    • 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 of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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

  • Embodiments of the present application relate to the technical field of electrochemical devices, and in particular, to an electrochemical device and electronic equipment.
  • the present application aims to provide an electrochemical device and electronic equipment that can at least reduce the manufacturing cost of the electrochemical device and increase the energy density of the electrochemical device.
  • the insulating member is connected to the connecting piece, the insulating member is provided with a third through hole, and the third through hole is connected with the second through hole.
  • the feedthrough component includes a first part and a second part. The first part is attached to the wall surface of the insulating component that is away from the connecting piece. The first part covers the third through hole. The second part is One end is connected to the wall surface of the first part facing the connecting piece, and the other end of the second part is respectively provided in the first through hole, the second through hole and the third through hole.
  • the insulating piece is connected to the cover body through the connecting piece.
  • the insulating piece and the connecting piece can be attached and fixed first, and then the connecting piece can be connected to the first wall surface, the second wall surface or the inner wall of the first through hole of the cover body.
  • the first part of the through-piece is directly connected to the insulating piece; when disassembling, the feed-through piece and the insulating piece can all be separated from the cover by separating the connecting piece and the cover.
  • this application uses fewer parts, which not only simplifies the production and manufacturing process, helps reduce the production cost of the electrochemical device, but also effectively increases the accommodation cavity space of the electrochemical device.
  • the fitting and connection between the insulating piece and the connecting piece can be carried out outside the accommodation cavity, and the connection through the connecting piece can easily improve the installation accuracy of the insulating piece.
  • the connecting piece The connection between the insulating part and the feedthrough part and the cover body can be separated separately, and can be applied to the shell of any electrochemical device, so as to realize the standardization and universalization of the pole conduction structure of the electrochemical device.
  • the second part includes an extension part away from the first part, the extension part extends from the first through hole, and the extension part is located on the cover body.
  • the side facing away from the accommodating cavity is for the second part to be electrically connected to an external circuit.
  • the end of the extension part away from the first part is bent in a direction parallel to the second wall surface.
  • the second portion when viewed in a direction perpendicular to the second wall surface, is located in the area of the second through hole, the third through hole and the first through hole. Viewed in a direction perpendicular to the second wall surface, the second through hole and the third through hole are located within the area of the first through hole.
  • the connecting piece is closely connected to the first wall, and the gap between the second part and the wall of the first through hole is greater than or equal to 0.05 mm to prevent the second The two parts are in contact with the hole wall of the first through hole and a short circuit occurs.
  • the electrochemical device satisfies one of the following conditions (1) to (3):
  • the first through hole and the third through hole are both waist-shaped holes, oval holes, triangular holes, polygonal holes or irregular shaped holes;
  • the thickness of the insulating member is greater than or equal to 0.05 mm
  • the thickness of the first part is greater than or equal to 0.03 mm
  • the thickness of the cover is greater than or equal to 0.03 mm. .
  • the thickness of the insulating part, the first part and the cover body are all small, so as to increase the accommodation cavity space of the electrochemical device and improve the energy density of the electrochemical device.
  • the connecting piece is fixedly connected to the first wall, one side of the insulating member is bonded to the connecting piece, and the other side is bonded to the first part.
  • the thickness of the adhesively bonded feedthrough and insulator in the second direction is smaller, which can effectively increase the accommodation cavity space of the electrochemical device, so as to increase the energy density of the electrochemical device; and the components used Less, which simplifies the manufacturing process and helps reduce the production cost of electrochemical devices.
  • the electrochemical device satisfies at least one of the following conditions (4) to (6):
  • the insulation material is made of PP, PPS (polyphenylene sulfide) or PFA (soluble polytetrafluoroethylene);
  • the material of the feed-through part includes stainless steel, Al, Ni or Cu.
  • Figure 1 is a partially exploded view of an electrochemical device according to some embodiments of the present application.
  • Figure 2 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Figure 4 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Figure 5 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Figure 6a is a top view of the insulation member viewed along the second direction according to some embodiments of the present application.
  • Figure 6b is a top view of the feedthrough viewed along the second direction according to some embodiments of the present application.
  • Figure 6c is a top view of the electrochemical device viewed along the second direction according to some embodiments of the present application.
  • Figure 7 is a partial exploded view of an electrochemical device according to some embodiments of the present application.
  • Figure 8b is a top view of the feedthrough viewed along the second direction according to some embodiments of the present application.
  • Figure 8c is a top view of the electrochemical device viewed along the second direction according to some embodiments of the present application.
  • Figure 10a is a top view of the insulation member viewed along the second direction according to some embodiments of the present application.
  • Figure 10b is a top view of the feedthrough viewed along the second direction according to some embodiments of the present application.
  • Figure 12 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Figure 13 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Figure 14 is a partial cross-sectional view of an electrochemical device according to some embodiments of the present application.
  • Electrochemical device 100. Electrochemical device
  • installation includes welding, screwing, snapping, gluing, etc. to fix or restrict a certain component or device to a specific position or place.
  • the component or device can be maintained at a specific position or place. It can move within a limited range even if it does not move.
  • the component or device may or may not be disassembled after being fixed or restricted to a specific position or place, which is not limited in the embodiments of this application.
  • the embodiment of the present application provides an electrochemical device 100. Please refer to FIGS. 1 and 2.
  • the electrochemical device 100 includes a housing 10, an insulator 20, a connecting piece 30 and a feedthrough 40.
  • the insulating member 20, the connecting piece 30 and the feed-through member 40 are the pole conductive structure of the housing 10.
  • a first through hole 123 is opened on the housing 10.
  • the pole conductive structure can communicate with external equipment through the first through hole 123. conduction.
  • the electrochemical device 100 is the smallest unit that constitutes a battery or battery module, and is a place where the conversion of electrical energy and chemical energy is specifically realized.
  • the housing 10 defines an accommodation cavity 11.
  • the electrochemical device 100 also includes an electrode assembly (not shown in the figure) and an electrolyte (not shown in the figure). ), the electrode assembly and the electrolyte can be accommodated in the accommodation cavity 11 .
  • the housing 10 includes a cover 12 , which is disposed on the top of the housing 10 .
  • the cover 12 includes a first wall 121 facing the accommodating cavity 11 and a second wall 122 facing away from the accommodating cavity 11 .
  • the first through hole 123 is opened on the cover 12 .
  • the first through hole 123 is connected with the accommodating cavity 11 , and the first through hole 123 penetrates the first wall surface 121 and the second wall surface 122 .
  • the housing 10 is a structure made of a layer of hard sheet punched and formed, often called a hard shell.
  • the hard sheet can be made of metal materials such as stainless steel, Al or Ni, where the cover 12 is part of the housing 10.
  • the insulating member 20 is configured to separate and insulate the above-mentioned cover 12 and the feed-through member 40 .
  • the insulating member 20 is provided with a penetrating third through hole 21 , and the third through hole 21 is connected with the first through hole 123 of the cover 12 .
  • the third through hole 21 is located in the area of the first through hole 123 when viewed along the direction perpendicular to the second wall surface 122 (second direction Z).
  • the first through hole 123 may be coaxially disposed with the third through hole 21 .
  • the feedthrough 40 can extend into the third through hole 21 and the first through hole 123 .
  • the connecting piece 30 is connected to the insulating member 20 and the cover 12.
  • the connecting piece 30 can be connected to the first wall 121 or the second wall 122 of the cover 12. , or connected to the inner wall of the first through hole 123.
  • Figure 12 and Figure 14 For a schematic diagram of the connecting piece 30 connected to the second wall 122, refer to Figure 12 and Figure 14. It can be seen that in Figures 12 and 14, the pole can be directly removed from the outside for conduction. Structure;
  • a schematic diagram of the connecting piece 30 connected to the inner wall of the first through hole 123 please refer to Figure 13.
  • the connecting piece 30 is provided with a second through hole 31 , and the second through hole 31 is connected with the first through hole 123 and the third through hole 21 respectively.
  • the second through hole 31 and the third through hole 21 are arranged coaxially. In some embodiments, when viewed in a direction perpendicular to the second wall surface 122 , the second through hole 31 and the third through hole 21 are located between the first through hole 123 within the area.
  • the connecting piece 30 can be fixedly connected to the insulating member 20 first, and then the connecting piece 30 can be fixed to the first wall 121 of the cover 12, or the connecting piece 30 can be connected to the second wall 122 of the cover. Fix, or fix the connecting piece 30 to the inner wall of the first through hole 123 .
  • the insulating member 20 is made of plastic film, such as PP, PPS or PFA, and the connecting piece 30 can be made of a hard metal piece.
  • the insulating piece 20 can be directly glued to the hard metal connecting piece 30
  • the metal connecting piece 30 can be fixed to the first wall 121 of the cover 12 by bonding, screwing or snapping.
  • the entire insulating member 20 can be separated from the cover 12 by disassembling the metal connecting piece 30 later.
  • the insulating member 20 and the metal connecting piece 30 can be glued on the outside of the electrochemical device 100 in advance.
  • the entire insulating piece 20 can be fixed by fixing the connecting piece 30.
  • the insulating member 20 is used to meet the high-precision installation requirements of the electrochemical device 100 .
  • the electrochemical device 100 is a hard-shell battery, and the feedthrough 40 can be configured as a positive lead-out member of the hard-shell battery.
  • the hard-shell battery There is only one layer of structure, that is, a metal hard sheet, while the aluminum-plastic film has a three-layer structure, namely nylon layer, aluminum layer and PP layer. Because the hard case has no nylon layer and PP layer, the hard case itself can be used as the negative electrode, while the positive electrode can be isolated from the hard case body in the form of an insulating seal.
  • the first part 41 can limit the position of the entire feedthrough 40 .
  • One end of the second part 42 is connected to the wall surface of the first part 41 facing the connecting piece 30 , and the other end of the second part 42 is respectively provided in the first through hole 123 , the third through hole 21 and the second through hole 31 .
  • the second portion 42 is located in the area of the third through hole 21 , the second through hole 31 and the first through hole 123 .
  • the second part 42 is used to connect external equipment so that the external equipment is connected to the electrochemical device 100.
  • the feedthrough 40 is a pole of the electrochemical device 100, and its material can be stainless steel, Al, or Ni. Or Cu etc.
  • the insulating member 20 is connected to the first wall 121 or the second wall 122 through the connecting piece 30, or to the inner wall of the first through hole 123.
  • the connecting piece 30 can be attached first.
  • the connecting piece 30 is connected to the cover 12, and the first part 41 of the feed-through member 40 is directly connected to the insulating member 20; during disassembly, the connecting piece 30 and the cover 12 can be separated to allow the feed-through
  • the member 40 and the insulating member 20 are all separated from the cover 12 .
  • this application uses fewer parts, which not only simplifies the manufacturing process, helps reduce the production cost of the electrochemical device 100, but also effectively increases the storage capacity of the electrochemical device 100.
  • the space in the cavity 11 can be improved to increase the energy density of the electrochemical device 100; at the same time, the insulating member 20 and the connecting piece 30 can be closely connected outside the accommodation cavity 11, and the connection through the connecting piece 30 can easily increase the insulating member 20 The installation accuracy is high.
  • the connection between the connecting piece 30, the insulating piece 20, the feedthrough 40 and the cover 12 can be separated separately, and can be applied to the shell 10 of any electrochemical device 100 to facilitate the implementation of the electrochemical device. Standardization and generalization of 100-pole conduction structure.
  • the first through hole 123 , the second through hole 31 and the third through hole 21 can all be configured as cylindrical holes, waist-shaped holes, or Oval holes, triangular holes, square holes, polygonal holes or irregular shaped holes, etc.
  • the second part 42 needs to pass through the third through hole 21 , the second through hole 31 and the first through hole 123 , and the shape of the second part 42 is consistent with the first through hole 123 and the second through hole 31
  • the shape of the third through hole 21 is adapted.
  • FIG. 2 In order to prevent the second part 42 from contacting the wall of the first through hole 123 and causing a short circuit, please refer to FIG. 2 .
  • the gap between the second part 42 and the wall of the first through hole 123 is greater than or equal to 0.05 mm, and the gap of 0.05 mm is sufficient to ensure separation and insulation between the second part 42 and the wall of the first through hole 123 .
  • the shape of the third through hole 21 is consistent with the shape of the second through hole 31.
  • the connecting piece 30 is conductive, a gap is also provided between the second portion 42 and the wall of the second through hole 31.
  • the electrochemical device 100 further includes a sealing member 60 disposed in the annular gap 50 , and the sealing member 60 is configured to seal the annular gap 50 .
  • the sealing member 60 By disposing the sealing member 60 in the annular gap 50 , the hole wall of the first through hole 123 is sealed and insulated from the second portion 42 .
  • the material of the sealing member 60 can be the same as that of the insulating member 20.
  • Figure 5 Please further refer to Figure 5.
  • the length of the second part 42 is a 1
  • the length of the first through hole 123 is a 2
  • the length of the third through hole 21 is a 3
  • the width of the second part 42 is b 1
  • the width of the first through hole 123 is b 2
  • the width of the third through hole 21 is b 3 , satisfying a 1 ⁇ 0.3 mm, b 1 ⁇ 0.3 mm, a 2 ⁇ a 1 +0.1 mm, b 2 ⁇ b 1 +0.1 mm, a 3 ⁇ a 1 , b 3 ⁇ b 1 ; in order to adapt to the flat electrochemical device 100, usually, The length a 1 of the second portion 42 is greater than the width b 1 of the second portion 42 .
  • the size of the second part 42 is smaller than the size of the first through hole 123 , which can separate and insulate the second part 42 from the cover 12 .
  • the diameter of the second part 42 may be set to be smaller than or equal to the diameter of the third through hole 21 so that the insulating member 20 can clamp and stabilize the second part 42 .
  • the first through hole 123 and the third through hole 21 are elongated square holes, and the second part 42 is connected to the first through hole 123 and the third through hole. 21 matching long sheets.
  • the second part 42 includes an extension part 421 away from the first part 41 .
  • the extension part 421 extends in a direction away from the first part 41 and extends out of the first through hole 123 , and the extension part 421 is located away from the accommodation of the cover 12 side of cavity 11.
  • the extension portion 421 protrudes from the second wall 122 to facilitate electrical connection with an external circuit.
  • the connecting piece 30 can be connected to the second wall 122 of the cover 12 , that is, from the outside of the cover 12 toward the receiving cavity 11 , the first part 41 and the insulating member are arranged in sequence. 20.
  • the connecting piece 30, and the second part 42 is disposed toward the accommodating cavity 11.

Abstract

本申请涉及提供了一种电化学装置及电子设备，包括壳体、绝缘件、连接片和馈通件。壳体限定出容置腔，壳体包括盖体，盖体包括面向容置腔的第一壁面和背离容置腔的第二壁面，盖体开设有贯穿的第一通孔；连接片连接于第一壁面、第二壁面或者第一通孔的内壁；连接片的第二通孔与第一通孔连通；绝缘件贴合连接于连接片，绝缘件开设有与第二通孔连通的第三通孔；馈通件的第一部分贴合连接于绝缘件的背离连接片的壁面，第一部分覆盖第三通孔，馈通件的第二部分的一端连接于第一部分的面向连接片的壁面，另一端分别设置于第一通孔、第二通孔和第三通孔。本申请的电化学装置具有较高的能量密度及安装精度，并且具有较低的生产成本。

Description

电化学装置及电子设备
相关申请的交叉参考
本申请要求于2022年6月15日提交中国专利局，申请号为202210671239.6，发明名称为“电化学装置及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及电化学装置技术领域，特别是涉及一种电化学装置及电子设备。
背景技术
硬壳电池的极柱通常采用铆压的形式固定在硬壳电池的壳体上，铆压形式极柱结构通常包括起承力作用的金属垫圈、起绝缘密封作用的塑胶垫圈以及起导通作用的极柱等，其部件较多，铆压工艺复杂，在制造过程中具有较高的精度要求，电池的制造成本高。并且，铆压形式的极柱结构在壳体内占据了较大的空间，造成电池的能量密度损失。
申请内容
本申请旨在提供一种电化学装置及电子设备，以至少能够降低电化学装置的制造成本，并提高电化学装置的能量密度。
本申请的第一方面，提供了一种电化学装置，包括壳体、绝缘件、连接片和馈通件。壳体限定出容置腔，所述壳体包括盖体，所述盖体包括面向所述容置腔的第一壁面以及背离所述容置腔的第二壁面，所述盖体开设有贯穿所述第一壁面和所述第二壁面的第一通孔。连接片连接于所述第一壁面或第二壁面，或者，所述连接片连接于所述第一通孔的内壁；所述连接片开设有第二通孔，所述第二通孔与所述第一通孔连通。绝缘件贴合连接于所述连接片，所述绝缘件开设有第三通孔，所述第三通孔与所述第二通孔连通。馈通件包括第一部分和第二部分，所述第一部分贴合连接于所述绝缘件的背离所述连接片的壁面，所述第一部分覆盖所述第三通孔，所述第二部分的一端连接于所述第一部分的面向所述连接片的壁面，所述第二部分的另一端分别设置于所述第一通孔、所 述第二通孔和所述第三通孔。
绝缘件通过连接片连接于盖体，安装时可首先将绝缘件与连接片贴合固定，然后再将连接片与盖体的第一壁面、第二壁面或第一通孔的内壁连接，馈通件的第一部分则直接贴合连接于绝缘件上；拆卸时，可通过分离连接片与盖体使得馈通件和绝缘件全部从盖体上分离。相较于传统的极柱铆压结构，本申请采用的零部件较少，不仅简化了生产制造工艺，有利于降低电化学装置的生产成本，并且可有效增大电化学装置的容置腔空间，以便于提高电化学装置的能量密度；同时，绝缘件与连接片贴合连接的形式可在容置腔外部进行，通过连接片连接的形式易于提高绝缘件的安装精度，另外，连接片、绝缘件及馈通件与盖体连接的形式可单独拆分出来，并可适用于任意电化学装置的壳体，以便于实现电化学装置极柱导通结构的标准化及通用化。
作为上述方案的进一步改进方案，所述第二部分包括背离所述第一部分的伸出部，所述伸出部伸出于所述第一通孔，所述伸出部位于所述盖体的背离所述容置腔的一侧，以便于第二部分与外部电路电连接。
作为上述方案的进一步改进方案，所述伸出部的背离所述第一部分的端部朝平行于所述第二壁面的方向弯折设置。通过将伸出部的一端弯折设置，可减小第二部分在第三方向上的尺寸，并可增大第二部分与外部电路的连接面积。
作为上述方案的进一步改进方案，沿垂直于所述第二壁面的方向观察，所述第二部分位于所述第二通孔、第三通孔以及第一通孔的区域内。沿垂直于所述第二壁面的方向观察，所述第二通孔和所述第三通孔位于所述第一通孔的区域内。
作为上述方案的进一步改进方案，所述连接片贴合连接于所述第一壁面，所述第二部分与所述第一通孔的孔壁之间的间隙大于或等于0.05毫米，以防止第二部分与第一通孔的孔壁之间接触而发生短路。
作为上述方案的进一步改进方案，所述第二部分在平行于第二壁面方向上的截面为第一截面，所述第一截面的最大尺寸a 1≥0.3毫米、最小尺寸b 1≥0.3毫米。
作为上述方案的进一步改进方案，所述电化学装置满足下列条件(1)至(3)之一：
(1)、所述第一通孔以及所述第三通孔均为圆柱孔，所述第二部分为圆柱状， 所述第一通孔的直径d 1、第二部分的直径d 2以及第三通孔的直径d 3满足：d 2≥0.3毫米，d 1≥d 2+0.1毫米，d 3≥d 2；第二部分的直径小于第一通孔的直径，以便于第二部分与盖体分隔绝缘。由于绝缘件的绝缘作用，第二部分的直径可设置为小于或等于第三通孔的直径，当第三通孔直径等于第二部分的直径时，绝缘件可对第二部分起到夹持作用，以稳固第二部分；
(2)、所述第一通孔以及所述第三通孔均为腰型孔、椭圆形孔、三角形孔、多边形孔或不规则异形孔；
(3)、沿垂直于所述第二壁面的方向，所述绝缘件的厚度大于或等于0.05毫米，所述第一部分的厚度大于或等于0.03毫米，所述盖体的厚度大于或等于0.03毫米。绝缘件、第一部分以及盖体的厚度都较小，以增大电化学装置的容置腔空间，提高电化学装置的能量密度。
作为上述方案的进一步改进方案，所述连接片与所述第一壁面固定连接，所述绝缘件一侧粘接于所述连接片，另一侧粘接于所述第一部分。胶黏粘接形式的馈通件及绝缘件在第二方向上的厚度较小，可有效增大电化学装置的容置腔空间，以便于提高电化学装置的能量密度；并且采用的零部件较少，简化了生产制造工艺，有利于降低电化学装置的生产成本。
作为上述方案的进一步改进方案，所述盖体与所述第二部分之间具有环形间隙，所述环形间隙环绕所述第一通孔布置，所述绝缘件密封所述环形间隙，在减少材料的同时可将第二部分与第三通孔的孔壁密封绝缘。或者，
所述第一壁面与所述第二部分之间具有环形间隙，所述环形间隙环绕所述第一通孔布置，所述电化学装置还包括密封件，所述密封件密封所述环形间隙。通过在环形间隙内设置密封件以便于使得第一通孔的孔壁与第二部分密封绝缘。
作为上述方案的进一步改进方案，所述电化学装置满足下列条件(4)至(6)中的至少一个：
(4)、所述壳体的材质包括不锈钢、Al或Ni；
(5)、所述绝缘件的材质包括PP、PPS(聚苯硫醚))或PFA(可溶性聚四氟乙烯)；
(6)、所述馈通件的材质包括不锈钢、Al、Ni或Cu。
第二方面，本申请还提供了一种电子设备，包括如上述第一方面任一实施例所述的电化学装置。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，还可以根据附图获得其他的附图。
图1为本申请一些实施例的电化学装置的部分爆炸视图；
图2为本申请一些实施例的电化学装置的部分截面视图；
图3为本申请一些实施例的电化学装置沿第二方向观察的俯视图；
图4为本申请一些实施例的电化学装置的部分截面视图；
图5为本申请一些实施例的电化学装置的部分截面视图；
图6a为本申请一些实施例的绝缘件沿第二方向观察的俯视图；
图6b为本申请一些实施例的馈通件沿第二方向观察的俯视图；
图6c为本申请一些实施例的电化学装置沿第二方向观察的俯视图；
图7为本申请一些实施例的电化学装置的部分爆炸视图；
图8a为本申请一些实施例的绝缘件沿第二方向观察的俯视图；
图8b为本申请一些实施例的馈通件沿第二方向观察的俯视图；
图8c为本申请一些实施例的电化学装置沿第二方向观察的俯视图；
图9为本申请一些实施例的电化学装置的部分截面视图；
图10a为本申请一些实施例的绝缘件沿第二方向观察的俯视图；
图10b为本申请一些实施例的馈通件沿第二方向观察的俯视图；
图10c为本申请一些实施例的电化学装置沿第二方向观察的俯视图；
图11为本申请一些实施例的伸出部的弯折示意图；
图12为本申请一些实施例的电化学装置的部分截面视图；
图13为本申请一些实施例的电化学装置的部分截面视图
图14为本申请一些实施例的电化学装置的部分截面视图。
图中：
100、电化学装置；
10、壳体；11、容置腔；12、盖体；121、第一壁面；122、第二壁面；123、第一通孔；
20、绝缘件；21、第三通孔；
30、连接片；31、第二通孔；
40、馈通件；41、第一部分；42、第二部分；421、伸出部；
50、环形间隙；
60、密封件。
具体实施方式
为了便于理解本申请，下面结合附图和具体实施例，对本申请进行更详细的说明。需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本说明书中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是用于限制本申请。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
此外，下面所描述的本申请不同实施例中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
在本说明书中，所述“安装”包括焊接、螺接、卡接、粘合等方式将某一元件或装置固定或限制于特定位置或地方，所述元件或装置可在特定位置或地方保持不动也可在限定范围内活动，所述元件或装置固定或限制于特定位置或地方后可进行拆卸也可不能进行拆卸，在本申请实施例中不作限制。
本申请的实施例提出了一种电化学装置100，请参照图1和图2，该电化学装置100包括壳体10、绝缘件20、连接片30和馈通件40。绝缘件20、连接片30和馈通件40为壳体10的极柱导通结构，壳体10上开设有第一通孔123，极柱导通结构可经过第一通孔123与外部设备导通。需要说明的是，在本申请 的实施例中，电化学装置100是组成电池或电池模组的最小单元，是具体实现电能和化学能转换的场所。
对于上述壳体10，请参照图1和图2，壳体10限定出容置腔11，电化学装置100还包括电极组件(未在图中示出)及电解液(未在图中示出)，电极组件及电解液则可收容于容置腔11内。壳体10包括盖体12，盖体12盖设于壳体10的顶部，盖体12包括面向容置腔11的第一壁面121以及背离容置腔11的第二壁面122。第一通孔123开设于盖体12上，第一通孔123与容置腔11连通，并且第一通孔123贯穿第一壁面121以及第二壁面122。可选的，在一些实施例中，壳体10为一层硬片冲裁成型的结构，通常称之为硬壳，硬片可采用不锈钢、Al或Ni等金属材料，其中，盖体12为壳体10的一部分。
对于上述绝缘件20，请参照图1和图2，绝缘件20被配置将上述盖体12与馈通件40分隔绝缘。绝缘件20开设有贯穿的第三通孔21，第三通孔21与盖体12的第一通孔123连通。在一些实施例中，沿垂直于第二壁面122的方向(第二方向Z)观察，第三通孔21位于第一通孔123的区域内。第一通孔123可与第三通孔21同轴设置。上述馈通件40可延伸于第三通孔21以及第一通孔123内。
对于上述连接片30，请参照图1和图2，连接片30连接于绝缘件20与盖体12，例如，连接片30可贴合连接在盖体12的第一壁面121或第二壁面122，或者连接于第一通孔123的内壁，连接片30连接于第二壁面122的示意图可参照图12和图14，可以看到，图12和图14中可直接从外部拆卸极柱导通结构；连接片30连接于第一通孔123内壁的示意图可参照图13。连接片30上开设有第二通孔31，第二通孔31分别与第一通孔123和第三通孔21连通。第二通孔31与第三通孔21同轴设置，在一些实施例中，沿垂直于第二壁面122的方向观察，第二通孔31和第三通孔21位于第一通孔123的区域内。安装时，可首先将连接片30固定连接于绝缘件20上，然后再将连接片30与盖体12的第一壁面121相固定，也可将连接片30与盖体的第二壁面122相固定，或者将连接片30与第一通孔123的内壁固定。在一些实施例中，绝缘件20为塑料胶片，例如采用PP、PPS或PFA等材料，连接片30则可采用硬质金属片，绝缘件20可直接胶黏复合于硬质的金属连接片30上，金属连接片30则可采用粘接、螺接或卡接等方式固定于盖体12的第一壁面121。后期拆卸金属连接片30即可 将整个绝缘件20从盖体12上分离，绝缘件20与金属连接片30的胶黏可事先在电化学装置100的外部进行，固定连接片30即可固定整个绝缘件20，以便于满足电化学装置100的高精度的安装要求。
对于上述馈通件40，在一些实施例中，电化学装置100为硬壳电池，馈通件40可设置为硬壳电池的正极引出件，硬壳电池与铝塑膜电池的区别在于硬壳只有一层结构即金属硬片，而铝塑膜则是三层结构，分别为尼龙层、铝层和PP层。正因为硬壳没有尼龙层和PP层，所以可以将硬壳本身作为负极，而正极则可采用绝缘密封的形式与硬壳本体隔离开来。
请参照图1和图2，馈通件40包括彼此连接的第一部分41和第二部分42。第一部分41设置于壳体10的容置腔11内，用于连接电极组件，并且第一部分41贴合连接于绝缘件20的背离连接片30的壁面。由于绝缘件20的作用，第一部分41与壳体10分隔绝缘。第二部分42则连接于第一部分41的面向连接片30的壁面，连接方式包括但不限于焊接、螺接或卡接等；可选的，在一些实施例中，第二部分42与第一部分41一体成型。沿第一方向X，第一部分41的尺寸大于第一通孔123及第三通孔21的尺寸，第一部分41覆盖第三通孔21，当第二部分42延伸于第一通孔123或第三通孔21内时，第一部分41可对整个馈通件40进行限位。第二部分42的一端连接于第一部分41的面向连接片30的壁面，第二部分42的另一端分别设置于第一通孔123、第三通孔21和第二通孔31。沿第二方向Z观察，第二部分42位于第三通孔21、第二通孔31以及第一通孔123的区域内。第二部分42用于连接外部设备，以使得外部设备与电化学装置100导通，在本实施例中，馈通件40为电化学装置100的极柱，其材质可采用不锈钢、Al、Ni或Cu等。
本申请的实施例中，绝缘件20通过连接片30连接于第一壁面121或第二壁面122，或者连接于第一通孔123的内壁，安装时可首先将绝缘件20与连接片30贴合固定，然后再将连接片30与盖体12连接，馈通件40的第一部分41则直接贴合连接于绝缘件20上；拆卸时，可通过分离连接片30与盖体12使得馈通件40和绝缘件20全部从盖体12上分离。相较于传统的极柱铆压结构，本申请采用的零部件较少，不仅简化了生产制造工艺，有利于降低电化学装置100的生产成本，并且可有效增大电化学装置100的容置腔11空间，以便于提高电化学装置100的能量密度；同时，绝缘件20与连接片30贴合连接的形式 可在容置腔11外部进行，通过连接片30连接的形式易于提高绝缘件20的安装精度，另外，连接片30、绝缘件20馈通件40与盖体12连接的形式可单独拆分出来，并可适用于任意电化学装置100的壳体10，以便于实现电化学装置100极柱导通结构的标准化及通用化。
根据本申请的一些实施例，请参照图2，连接片30与第一壁面121固定连接，绝缘件20一侧粘接于连接片30，另一侧粘接于第一部分41，以使得馈通件40与盖体12相固定。胶黏粘接形式的馈通件40及绝缘件20在第二方向Z上的厚度较小，可有效增大电化学装置100的容置腔11空间，以便于提高电化学装置100的能量密度；胶黏粘接的形式操作简单所用部件少，有利于降低电化学装置100的生产成本；同样，图12中也可采用胶黏粘接的形式粘接馈通件40。
对于上述第一通孔123、第二通孔31以及第三通孔21的形状，第一通孔123、第二通孔31及第三通孔21可均设置为圆柱孔、腰型孔、椭圆形孔、三角形孔、方形孔、多边形孔或不规则的异形孔等。在一些实施例中，第二部分42需穿出第三通孔21、第二通孔31以及第一通孔123外，第二部分42的形状与第一通孔123、第二通孔31以及第三通孔21的形状相适配。为防止第二部分42与第一通孔123的孔壁之间接触而发生短路，请参照图2，第二部分42与第一通孔123的孔壁之间具有间隙，使得第二部分42与第一通孔123的孔壁之间分隔。可选的，第二部分42与第一通孔123的孔壁之间的间隙大于或等于0.05毫米，0.05毫米的间隙足以保证第二部分42与第一通孔123的孔壁分隔绝缘。第三通孔21的形状与第二通孔31的形状一致，同样的，当连接片30可导电时，第二部分42与第二通孔31的孔壁之间也设置有间隙。
进一步的，请参照图2和图3，盖体12与第二部分42之间具有环形间隙50，环形间隙50环绕第一通孔123布置。请参照图2至图4，电化学装置100还包括密封件60，密封件60设置于该环形间隙50内，密封件60被配置为密封环形间隙50。通过在该环形间隙50内设置密封件60以便于使得第一通孔123的孔壁与第二部分42密封绝缘。密封件60的材料可采用与绝缘件20一样，可选的，请进一步参照图5，为减少生产材料，上述环形间隙50也可直接通过绝缘件20进行密封绝缘，即绝缘件20延伸于上述环形间隙50内以分隔第二部分42和第一通孔123的孔壁；或者，在其他实施例中，上述密封件60与绝缘 件20一体成型。
在一些实施例中，请参照图2以及图6a至图6c，第一通孔123以及第三通孔21均为圆柱孔，第二部分42与第一通孔123和第三通孔21相适配，第二部分42为圆柱状。其中，第一通孔123的直径d 1、第二部分42的直径d 2以及第三通孔21的直径d 3满足：d 2≥0.3毫米，d 1≥d 2+0.1毫米，d 3≥d 2。第二部分42的直径小于第一通孔123的直径，以便于第二部分42与盖体12分隔绝缘。由于绝缘件20的绝缘作用，第二部分42的直径可设置为小于或等于第三通孔21的直径，当第三通孔21直径等于第二部分42的直径时，绝缘件20可对第二部分42起到夹持作用，以稳固第二部分42。
在一些实施例中，请参照图7至图8c，第一通孔123以及第三通孔21均为腰型孔，沿第一方向X，第一通孔123和第三通孔21的两端均为弧状。第二部分42与第一通孔123和第三通孔21相适配，第二部分42为腰形状。第二部分42从第三通孔21和第一通孔123伸出并凸出于盖体12的第二壁面122，第二部分42在平行于第二壁面122方向上的截面为第一截面，第一截面的最大尺寸a 1≥0.3毫米、最小尺寸b 1≥0.3毫米。具体的，沿第二方向Z观察，沿第一方向X，第二部分42的长度为a 1，第一通孔123的长度为a 2，第三通孔21的长度为a 3；沿第三方向Y，第二部分42的宽度为b 1，第一通孔123的宽度为b 2，第三通孔21的宽度为b 3，满足a 1≥0.3毫米，b 1≥0.3毫米，a 2≥a 1+0.1毫米，b 2≥b 1+0.1毫米，a 3≥a 1，b 3≥b 1；在其他一些实施例中，为适应扁平状的电化学装置100，通常情况下，第二部分42的长度为a 1大于第二部分42的宽度为b 1。本实施例中，第二部分42的尺寸小于第一通孔123的尺寸，可使得第二部分42与盖体12分隔绝缘。第二部分42的直径可设置为小于或等于第三通孔21的直径，以便于绝缘件20对第二部分42起到夹持稳固作用。
在一些实施例中，请参照图9至图10c，第一通孔123和第三通孔21均为长条状的方形孔，第二部分42为与第一通孔123和第三通孔21相适配的长片状。第二部分42包括背离第一部分41的伸出部421，伸出部421朝背离第一部分41的方向延伸并伸出于第一通孔123，并且伸出部421位于盖体12的背离容置腔11的一侧。本实施例中，伸出部421凸出于第二壁面122，以便于与外部电路进行电连接。其中，沿第二方向Z观察，沿第一方向X，第一通孔123的长度为m 1，伸出部421的长度为m 2，第三通孔21的长度为m 3；沿第三 方向Y，第一通孔123的宽度为n 1，伸出部421的宽度为n 2，第三通孔21的宽度为n 3，满足m 2≥0.05毫米，n 2≥0.05毫米，m 1≥m 2+0.1毫米，n 1≥n 2+0.1毫米，m 3≥m 2，n 3≥n 2，以便于第二部分42与第一通孔123的孔壁绝缘，其中m 2还可设置为大于或等于0.3毫米。
进一步的，结合图9和图11，伸出部421的背离第一部分41的端部朝平行于第二壁面122的方向弯折设置。本实施例中，通过将伸出部421的一端弯折设置，可减小第二部分42在第三方向上的尺寸，并可增大第二部分42与外部电路的连接面积，以便于第二部分42与外部电路电连接。
根据本申请的一些实施例，请参照图9至图10c，沿第二方向Z，绝缘件20的厚度h 1大于或等于0.05毫米，第一部分41的厚度h 2大于或等于0.03毫米，盖体12的厚度h 3大于或等于0.03毫米。上述绝缘件20、第一部分41以及盖体12的厚度都较小，以增大电化学装置100的容置腔11空间，使得容置腔11可放置更大的电极组件，以提高电化学装置100的能量密度。对于连接片30的厚度，连接片30为贴合于绝缘件20上的一层薄片，其厚度可设置为大于或等于0.03毫米，若其厚度小于0.03毫米，将会使连接片30与盖体12之间难以焊接固定。
在一些实施例中，连接片30可连接于盖体12的第一壁面121或第二壁面122，盖体12上的第一通孔123的尺寸需要设置为大于或等于连接片30的第二通孔31的尺寸，并且连接片30的尺寸需要大于或等于绝缘件20的尺寸。以方形状的连接片30为例，如图2或图9，当连接片30靠近第一通孔123的一侧采用搭接焊连接于盖体12上的第一壁面121时，第一通孔123的尺寸比第二通孔31的尺寸大0.1毫米以上(比如，第一通孔123与第三通孔21同轴设置，即第一通孔123的长度比第二通孔31的长度大0.1毫米以上，第一通孔123的宽度比第二通孔31的宽度大0.1毫米以上，若两个通孔为圆柱状，则第一通孔123的直径比第二通孔31的直径大0.1毫米以上)，连接片30的尺寸大于或等于绝缘件20的尺寸，以便于连接片30与盖体12之间的焊接以及提高两者之间的连接稳定性。如图2或图4，当连接片30采用穿透焊连接于盖体12的第一壁面121上时，第一通孔123的尺寸可设置为大于或等于第二通孔31的尺寸，连接片30的尺寸大于或等于绝缘件20的尺寸。当连接片30远离第一通孔123的一侧采用搭接焊连接于盖体12的第一壁面121时，第二通孔31的尺寸大于 或等于第一通孔123的尺寸，连接片30的长度大于绝缘件20的长度0.1毫米以上，连接片30的宽度大于绝缘件20的宽度0.1毫米以上，以便于连接片30与盖体12之间的焊接以及提高两者之间的连接稳定性。
在一些实施例中，如图12所示，连接片30可连接于盖体12的第二壁面122，即从盖体12外朝向容置腔11的方向，依次设置有第一部分41、绝缘件20、连接片30，且第二部分42朝向容置腔11设置，此时，当连接片30远离第二部分42的一侧采用搭接焊连接于第二壁面122时，连接片30的尺寸需要大于绝缘件20的尺寸0.1毫米以上，以便于连接片30与盖体12之间的焊接以及提高两者之间的连接稳定性，而第一通孔123的尺寸可以大于或等于第二通孔31的尺寸；当连接片30采用穿透焊连接于第二壁面122时，连接片30的尺寸可以大于或等于绝缘件20的尺寸，此时第一通孔123的尺寸可以大于或等于第二通孔31的尺寸。
在一些实施例中，如图13所示，当第一通孔123的尺寸大于第二通孔31尺寸时，可将整个连接片30设置于第一通孔123中，再与第一通孔123内壁进行拼缝焊接，连接片30的长度比绝缘件20的长度大0.1毫米以上，连接片30的宽度比绝缘件20的宽度大0.1毫米以上。在一些实施例中，当连接片30与盖体12与第一通孔123连接的端面采用拼缝焊接时，连接片30的厚度可以小于盖体12的厚度。在其他实施例中，如图14所示，当第一通孔123的尺寸大于第三通孔21的尺寸时，可将整个绝缘件20设置于第一通孔123中，绝缘件20再于第一通孔123的内壁进行粘接，连接片30则与盖体12的第二壁面122进行搭焊接，此时连接片30的尺寸大于绝缘件20的尺寸。需要说明的是，上述实施例仅以连接片30与盖体12焊接来进行说明，在其他实施例中，连接方式还可采用粘接或卡接等。
本申请的实施例还提出了一种电子设备，包括上述任一实施例所述的电化学装置100。本申请实施例的电子设备没有特别限定，其可以是现有技术中已知的任何电子设备。例如，电子设备包括但不限于蓝牙耳机、手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
需要说明的是，本申请的说明书及其附图中给出了本申请的较佳的实施例，但是，本申请可以通过许多不同的形式来实现，并不限于本说明书所描述的实施例，这些实施例不作为对本申请内容的额外限制，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。并且，上述各技术特征继续相互组合，形成未在上面列举的各种实施例，均视为本申请说明书记载的范围；进一步地，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (12)

  1. 一种电化学装置，其特征在于，包括：
    壳体，限定出容置腔，所述壳体包括盖体，所述盖体包括面向所述容置腔的第一壁面以及背离所述容置腔的第二壁面，所述盖体开设有贯穿所述第一壁面和所述第二壁面的第一通孔；
    连接片，连接于所述第一壁面或第二壁面，或者，所述连接片连接于所述第一通孔的内壁；所述连接片开设有第二通孔，所述第二通孔与所述第一通孔连通；
    绝缘件，贴合连接于所述连接片，所述绝缘件开设有第三通孔，所述第三通孔与所述第二通孔连通；
    馈通件，包括第一部分和第二部分，所述第一部分贴合连接于所述绝缘件的背离所述连接片的壁面，所述第一部分覆盖所述第三通孔，所述第二部分的一端连接于所述第一部分的面向所述连接片的壁面，所述第二部分的另一端分别设置于所述第一通孔、所述第二通孔和所述第三通孔。
  2. 根据权利要求1所述的电化学装置，其特征在于，所述第二部分包括背离所述第一部分的伸出部，所述伸出部伸出于所述第一通孔，所述伸出部位于所述盖体的背离所述容置腔的一侧。
  3. 根据权利要求2所述的电化学装置，其特征在于，所述伸出部的背离所述第一部分的端部朝平行于所述第二壁面的方向弯折设置。
  4. 根据权利要求1所述的电化学装置，其特征在于，沿垂直于所述第二壁面的方向观察，所述第二部分位于所述第二通孔、第三通孔以及第一通孔的区域内。
  5. 根据权利要求4所述的电化学装置，其特征在于，沿垂直于所述第二壁面的方向观察，所述第二通孔和所述第三通孔位于所述第一通孔的区域内。
  6. 根据权利要求1所述的电化学装置，其特征在于，所述连接片贴合连接于所述第一壁面，所述第二部分与所述第一通孔的孔壁之间的间隙大于或等于0.05毫米。
  7. 根据权利要求1所述的电化学装置，其特征在于，所述第二部分在平行于第二壁面方向上的截面为第一截面，所述第一截面的最大尺寸a 1≥0.3毫米、最小尺寸b 1≥0.3毫米。
  8. 根据权利要求1所述的电化学装置，其特征在于，满足下列条件(1)至(3)之一：
    (1)、所述第一通孔以及所述第三通孔均为圆柱孔，所述第二部分为圆柱状，所述第一通孔的直径d 1、第二部分的直径d 2以及第三通孔的直径d 3满足：d 2≥0.3毫米，d 1≥d 2+0.1毫米，d 3≥d 2；
    (2)、所述第一通孔以及所述第三通孔均为腰型孔、椭圆形孔、三角形孔、多边形孔或不规则异形孔；
    (3)、沿垂直于所述第二壁面的方向，所述绝缘件的厚度大于或等于0.05毫米，所述第一部分的厚度大于或等于0.03毫米，所述盖体的厚度大于或等于0.03毫米。
  9. 根据权利要求1至8中任一项所述的电化学装置，其特征在于，所述连接片与所述第一壁面固定连接，所述绝缘件一侧粘接于所述连接片，另一侧粘接于所述第一部分。
  10. 根据权利要求1至8中任一项所述的电化学装置，其特征在于，所述盖体与所述第二部分之间具有环形间隙，所述环形间隙环绕所述第一通孔布置，所述绝缘件密封所述环形间隙；
    或者，
    所述第一壁面与所述第二部分之间具有环形间隙，所述环形间隙环绕所述第一通孔布置，所述电化学装置还包括密封件，所述密封件密封所述环形间隙。
  11. 根据权利要求1中所述的电化学装置，其特征在于，满足下列条件(4)至(6)中的至少一个：
    (4)、所述壳体的材质包括不锈钢、Al或Ni；
    (5)、所述绝缘件的材质包括PP、PPS或PFA；
    (6)、所述馈通件的材质包括不锈钢、Al、Ni或Cu。
  12. 一种电子设备，其特征在于，包括权利要求1至11中任一项所述的电化学装置。
PCT/CN2022/140413 2022-06-15 2022-12-20 电化学装置及电子设备 WO2023240967A1 (zh)

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