WO2022083172A1 - 储能装置 - Google Patents

储能装置 Download PDF

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Publication number
WO2022083172A1
WO2022083172A1 PCT/CN2021/104300 CN2021104300W WO2022083172A1 WO 2022083172 A1 WO2022083172 A1 WO 2022083172A1 CN 2021104300 W CN2021104300 W CN 2021104300W WO 2022083172 A1 WO2022083172 A1 WO 2022083172A1
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WO
WIPO (PCT)
Prior art keywords
side wall
electrical connection
pole piece
energy storage
support portion
Prior art date
Application number
PCT/CN2021/104300
Other languages
English (en)
French (fr)
Inventor
陈志勇
Original Assignee
广东微电新能源有限公司
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Filing date
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Application filed by 广东微电新能源有限公司 filed Critical 广东微电新能源有限公司
Publication of WO2022083172A1 publication Critical patent/WO2022083172A1/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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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

  • the present invention relates to the technical field of energy storage, and more particularly, to an energy storage device.
  • Energy storage devices provide electrical energy to electronic devices to maintain the operation of electronic production.
  • the pole pieces of the energy storage device are arranged on the casing, and the arrangement of the pole pieces in the prior art is likely to cause damage to the energy storage device.
  • One object of the present invention is to provide an energy storage device to solve the problem that the arrangement of the pole pieces in the prior art is easy to cause damage to the energy storage device.
  • an energy storage device comprising a housing and a first pole piece
  • the housing comprises a first end face, a second end face and a side wall, the first end face is connected with one end of the side wall, and the second end face is connected with the other end of the side wall;
  • the first pole piece includes a first support portion, a second support portion, and a first electrical connection portion respectively connected to the first support portion and the second support portion, the first support portion and the second support portion are both It is electrically connected to the side wall, and the first electrical connection portion is spaced from the side wall.
  • the side wall is a cylindrical structure
  • the first support part and the second support part are arc structures
  • the first support part and the second support part are oppositely arranged on the first support part. Both sides of an electrical connection.
  • the first electrical connection portion is a sheet-like structure.
  • a first bending portion is disposed between the first support portion and the first electrical connection portion, and the first bending portion faces a side of the first support portion away from the side wall Bending
  • a second bending part is arranged between the second supporting part and the first electrical connecting part, and the second bending part is bent toward the side of the second supporting part away from the side wall fold.
  • first solder joint portions are formed on the first support portion and the second support portion, and the width dimension of the first solder joint portion is 0.05mm-0.30mm, and two adjacent first solder joint portions are The distance between a solder joint is 0.1mm-0.5mm.
  • the second pole piece includes a third support portion and a second electrical connection portion connected with the third support portion, the third support portion and the first end surface
  • the second electrical connection portion is located on the sidewall, and a first insulating layer is provided between the second electrical connection portion and the sidewall.
  • the first electrical connection portion is provided with a first metal plating layer
  • the second electrical connection portion is provided with a second metal plating layer.
  • the thickness of the first metal plating layer is greater than 2 ⁇ m, and the thickness of the second metal plating layer is greater than 2 ⁇ m.
  • a plurality of second solder joints are formed on the third support portion, the width of the second solder joints is 0.05mm-0.30mm, and the width between two adjacent second solder joints is 0.05mm-0.30mm. The distance is 0.1mm-0.5mm.
  • the distance between the first pole piece and the second pole piece is greater than 0.5 mm.
  • One technical effect of the present invention is that, by arranging the first electrical connection part of the first pole piece and the side wall at intervals, the area of the connection area between the first pole piece and the side wall is reduced, and the connection between the first pole piece and the side wall is avoided.
  • the area of the region is too large, so that damage to the energy storage device can be avoided when the first pole piece is arranged.
  • FIG. 1 is a schematic structural diagram of an energy storage device in one embodiment of the present disclosure from a viewing angle.
  • FIG. 2 is a schematic structural diagram of an energy storage device according to an embodiment of the present disclosure from another perspective.
  • FIG. 3 is a schematic structural diagram of one side of a first end face of an energy storage device in an embodiment of the present disclosure.
  • FIG. 4 is a partial enlarged view of FIG. 3 .
  • an energy storage device is disclosed. As shown in FIG. 1 and FIG. 2 , the energy storage device includes a housing and a first pole piece.
  • the casing includes a first end face 31 , a second end face 32 and a side wall 33 , the first end face 31 is connected to one end of the side wall 33 , and the second end face 32 is connected to the other end of the side wall 33 . connect.
  • the first pole piece includes a first support portion 11, a second support portion 12, and a first electrical connection portion 10 respectively connected to the first support portion 11 and the second support portion 12.
  • the first support portion 11 and the The second support parts 12 are all electrically connected to the side walls 33 , and the first electrical connection parts 10 are arranged at intervals from the side walls 33 .
  • the first electrical connection portion 10 on the first pole piece is electrically connected to the side wall 33 through the first support portion 11 and the second support portion 12 , so that the first electrical connection portion 10 and the side wall 33 are electrically connected. form an interval.
  • connections are made between the first support portion 11 and the side wall 33 and between the second support portion 12 and the side wall 33 .
  • the first electrical connection portion 10 is supported by the first support portion 11 and the second support portion 12 and is spaced from the side wall 33 to form a suspended structure, so that the first electrical connection portion 10 does not contact the surface of the side wall 33 .
  • the area of the connection area between the first pole piece and the side wall 33 can be reduced, thereby reducing the area on the side wall 33 that needs to be used in the connection process, and avoiding damage to the side wall 33 caused by the first pole piece.
  • welding is required to connect the first pole piece to the side wall 33 .
  • Reducing the area of the connection area between the first pole piece and the side wall 33 can reduce the area of the side wall 33 involved in welding, thereby avoiding damage to the side wall by welding, and protecting the housing of the energy storage device.
  • the energy storage device includes a first pole piece as the positive electrode of the energy storage device, and further includes another pole piece with the same structure as the first pole piece as the negative electrode of the energy storage device.
  • the first pole piece serving as the positive electrode is arranged on the side wall 33 and is connected to the positive electrode of the cell of the energy storage device
  • the pole piece serving as the negative electrode is connected to the negative electrode of the cell of the energy storage device
  • the pole piece serving as the negative electrode is located on the side wall 33 and insulated from the side wall 33 .
  • the housing of the energy storage device has an inner cavity, the inner cavity is provided with a battery cell, the positive electrode of the battery cell is connected to the side wall 33 , and the first pole piece serving as the positive electrode is connected to the side wall 33 .
  • the first end surface 31 is electrically connected to the negative electrode of the cell, and the pole piece serving as the negative electrode is electrically connected to the first end surface 31 .
  • the side wall 33 is a cylindrical structure
  • the first support part 11 and the second support part 12 are arc structures
  • the first support part 11 and the second support part 12 are oppositely arranged on both sides of the first electrical connection part 10 .
  • first end surface 31 is connected at one end of the cylindrical structure
  • second end surface 32 is connected at the other end of the cylindrical structure, so that the side wall 33 is formed with the first end surface 31 and the second end surface 32 having inner cavity of the shell.
  • the outer side of the side wall 33 of the cylindrical structure is arc-shaped, the arc-shaped structure of the first support portion 11 can be attached to the outer side of the side wall 33 , and the arc-shaped structure of the second support portion 12 can be attached to the outer side of the side wall 33 .
  • the connection between the first support portion 11 and the second support portion 12 and the side wall 33 is more convenient, and the connection structure between the first pole piece and the side wall 33 is made more compact, and no extra space is occupied.
  • the first support portion 11 and the second support portion 12 support the first electrical connection portion 10, and are arranged on opposite sides of the first electrical connection portion 10 to provide stable support, so that the structure of the first electrical connection portion 10 is more stable.
  • the first electrical connection portion 10 is a sheet-like structure.
  • the first electrical connection portion 10 is provided between the first support portion 11 and the second support portion 12 , and the first electrical connection portion 10 is used to conduct conduction with an external circuit.
  • the wires of the external circuit are electrically connected to the first electrical connection portion 10, so that the corresponding electrodes of the energy storage device are electrically connected to the external circuit.
  • the first electrical connection portion 10 of the sheet-like structure is more convenient to connect to the external circuit, and the surface of the sheet-like structure is easier to operate to electrically connect with the external circuit.
  • the surface of the first electrical connection part 10 of the sheet-like structure is in contact with the external circuit, and the sheet-like structure has a sufficient surface area for contacting the external circuit, which improves the stability of the circuit connection.
  • a first bending part 101 is provided between the first supporting part 11 and the first electrical connecting part 10 , and the first bending part 101 Bend toward the side of the first support portion 11 away from the side wall 33 .
  • a second bend portion 102 is provided between the second support portion 12 and the first electrical connection portion 10 . The two bending portions 102 are bent toward the side of the second supporting portion 12 away from the side wall 33 .
  • the first bending part 101 is bent along the first supporting part 11 to the side away from the side wall 33
  • the second bending part 102 is bent along the second supporting part 12 to the side away from the side wall 33 fold to keep a distance between the first electrical connection portion 10 and the side wall 33 .
  • the first bending part 101 and the second bending part 102 are bending structures, and the structural strength of the bending structures is higher, which can improve the stability of maintaining the distance between the first electrical connection part 10 and the side wall 33, so as to improve the first pole reliability of the chip structure.
  • the first electrical connection part 10 in the process of conducting the external circuit with the first electrical connection part 10 , it can be connected to the side of the first electrical connection part 10 facing away from the side wall 33 , or it can be connected to a side of the first electrical connection part 10 facing the side wall 33 . side connection.
  • the distance between the first electrical connection portion 10 and the side wall 33 enables the first electrical connection portion 10 to form a suspended structure, which is more convenient for connection with external circuits.
  • the energy storage device further includes a second pole piece, and the second pole piece includes a third support portion 21 and a first pole piece connected to the third support portion 21 .
  • Two electrical connection parts 20 the third support part 21 is electrically connected to the first end face 31 , the second electrical connection part 20 is located on the side wall 33 , and the second electrical connection part 20 is connected to the side wall 33 .
  • a first insulating layer 4 is provided between the walls 33 .
  • the third support portion 21 leads out the second pole piece from the first end surface 31 , and the second pole piece is bent so that the second electrical connection portion 20 is located on the side wall 33 .
  • the first insulating layer 4 forms insulation between the second electrical connection portion 20 and the sidewall 33 .
  • Insulation is formed between the first end face 31 and the side wall 33, and the first end face 31 is connected to the negative electrode of the cell of the energy storage device, so that the second pole piece is used as a negative pole piece, and the side wall 33 and the second end face 32 are connected to the energy storage device.
  • the positive pole of the cell is turned on, so that the first pole piece is used as the positive pole piece.
  • the first electrical connection portion 10 is provided with a first metal plating layer
  • the second electrical connection portion 20 is provided with a second metal plating layer.
  • the first metal plating layer and the second metal plating layer can increase the electrical conductivity of the corresponding first electrical connection part 10 and the second electrical connection part 20 .
  • the first metal coating and the second metal coating may be the same metal coating.
  • the material of the metal plating layer may be gold, silver, tin, nickel and other metals with good electrical conductivity, so as to increase the electrical conductivity of the first electrical connection portion 10 and the second electrical connection portion 20 .
  • the thickness of the first metal plating layer is greater than 2 ⁇ m, and the thickness of the second metal plating layer is greater than 2 ⁇ m.
  • the thicknesses of the first metal plating layer and the second metal plating layer are set in a range greater than 2 ⁇ m, which can ensure that the metal plating layer maintains stable electrical conductivity. Avoid prolonged use or wear that will cause the metal plating to fail.
  • the first metal plating layer may be provided on any one of the two sides of the first electrical connection part 10 facing and facing away from the sidewall, for conducting with external circuits.
  • the first metal plating layer may also be provided on both sides of the first electrical connecting portion 10 facing and facing away from the sidewall, so as to facilitate the connection between the first electrical connecting portion 10 and the external circuit.
  • first pole piece and the side wall 33 and the second pole piece and the first end face 31 are both laser welded connection structures, and other welding methods may also be used to form the connection.
  • the welding process can be operated by spot welding to avoid damage to the components caused by continuous welding.
  • the first support portion 11 and the second support portion 12 form a connection between the first pole piece and the side wall 33 , which can reduce the welding area on the first pole piece and further reduce damage to the energy storage device.
  • a plurality of first solder joint portions 51 are formed on the first support portion 11 and the second support portion 12 , and the width dimension of the first solder joint portion 51 is 0.05mm-0.30mm, and the distance between two adjacent first welding point portions 51 is 0.1mm-0.5mm.
  • a plurality of first solder joint portions 51 are formed on the first support portion 11 and the second support portion 12 to form a firm connection between the first pole piece and the side wall 33 .
  • the width dimension of the first solder joint portion 51 is in the range of 0.05mm-0.30mm, which can ensure the connection strength of each first solder joint portion 51, and prevent the area of each first solder joint portion 51 from being too large and not in the damage during welding.
  • Two adjacent first welding point portions 51 need to maintain a distance to avoid continuous welding.
  • the range of the spacing is 0.1mm-0.5mm, which can not only avoid the formation of continuous welding to damage the structural strength of the part, but also have sufficient connection strength.
  • a plurality of second solder joint portions 52 are formed on the third support portion 21 , and the width dimension of the second solder joint portions 52 is 0.05mm-0.30mm, adjacent to each other.
  • the distance between the two second welding point portions 52 is 0.1mm-0.5mm.
  • the width dimension of the second solder joint portions 52 not only ensures the connection strength of each second solder joint portion 52 , but also avoids damage to components caused by excessively large solder joint areas.
  • the spacing between the second welding point portions 52 can not only prevent the structural strength of the component from being damaged by continuous welding, but also have sufficient connection strength.
  • the distance between the first pole piece and the second pole piece is greater than 0.5 mm.
  • the first pole piece and the second pole piece serve as different electrodes of the energy storage device, for example, the first pole piece serves as a positive electrode, and the second pole piece serves as a negative electrode. Keeping the distance between the first pole piece and the second pole piece larger than 0.5 mm can effectively avoid the short circuit between the first pole piece and the second pole piece, and improve the safety performance of the energy storage device.
  • a separation structure with insulating material is arranged between the first pole piece and the second pole piece, and the separation structure extends and distributes along the casing within the space vacated between the first pole piece and the second pole piece.
  • the height of the separation structure may be higher than the heights of the first pole piece and the second pole piece on both sides of the corresponding position, which can effectively form insulation between the first pole piece and the second pole piece.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种储能装置，该储能装置包括壳体和第一极片；所述壳体包括第一端面(31)、第二端面(32)和侧壁(33)，所述第一端面(31)与所述侧壁(33)的一端连接，所述第二端面(32)与所述侧壁(33)的另一端连接；所述第一极片包括第一支撑部(11)、第二支撑部(12)以及分别与第一支撑部(11)和第二支撑部(12)连接的第一电连接部(10)，所述第一支撑部(11)和所述第二支撑部(12)均与所述侧壁(33)电连接，所述第一电连接部(10)与所述侧壁(33)间隔设置。

Description

储能装置 技术领域
本发明涉及储能技术领域，更具体地，本发明涉及一种储能装置。
背景技术
目前，各种不同的电子设备上都需要设置储能装置为设备提供电能。储能装置向电子设备提供电能，以维持电子制备的运行。储能装置的极片设置在壳体上，现有技术中极片的设置方式容易对储能装置造成损坏。
发明内容
本发明的一个目的是提供一种储能装置，以解决现有技术中极片设置方式容易对储能装置造成损坏的问题。
根据本发明的一个方面，提供一种储能装置，该储能装置包括壳体和第一极片；
所述壳体包括第一端面、第二端面和侧壁，所述第一端面与所述侧壁的一端连接，所述第二端面与所述侧壁的另一端连接；
所述第一极片包括第一支撑部、第二支撑部以及分别与第一支撑部和第二支撑部连接的第一电连接部，所述第一支撑部和所述第二支撑部均与所述侧壁电连接，所述第一电连接部与所述侧壁间隔设置。
可选地，所述侧壁为筒状结构，所述第一支撑部和所述第二支撑部为弧形结构，所述第一支撑部和所述第二支撑部相对设置在所述第一电连接部的两侧。
可选地，所述第一电连接部为片状结构。
可选地，所述第一支撑部与所述第一电连接部之间设有第一弯折部，所述第一弯折部朝向所述第一支撑部远离所述侧壁的一侧弯折，所述第二支撑部与所述第一电连接部之间设有第二弯折部，所述第二弯折部朝向所 述第二支撑部远离所述侧壁的一侧弯折。
可选地，所述第一支撑部和所述第二支撑部上形成多个第一焊点部，所述第一焊点部的宽度尺寸为0.05mm-0.30mm，相邻的两个第一焊点部之间的距离为0.1mm-0.5mm。
可选地，还包括第二极片，所述第二极片包括第三支撑部以及与所述第三支撑部连接的第二电连接部，所述第三支撑部与所述第一端面电连接，所述第二电连接部位于所述侧壁，所述第二电连接部与所述侧壁之间设有第一绝缘层。
可选地，所述第一电连接部设置有第一金属镀层，所述第二电连接部设置有第二金属镀层。
可选地，所述第一金属镀层的厚度大于2μm，所述第二金属镀层厚度大于2μm。
可选地，所述第三支撑部上形成多个第二焊点部，所述第二焊点部的宽度尺寸为0.05mm-0.30mm，相邻的两个第二焊点部之间的距离为0.1mm-0.5mm。
可选地，所述第一极片与所述第二极片之间的间距大于0.5mm。
本发明的一个技术效果在于，通过将第一极片的第一电连接部与侧壁间隔设置，减少了第一极片与侧壁连接区域的面积，避免了第一极片与侧壁连接区域的面积过大，从而在设置第一极片时能够避免对储能装置造成的损坏。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本发明的实施例，并且连同说明书一起用于解释本发明的原理。
图1是本公开一个实施例中储能装置一个视角下的结构示意图。
图2是本公开一个实施例中储能装置另一个视角下的结构示意图。
图3是本公开一个实施例中储能装置第一端面一侧的结构示意图。
图4是图3的局部放大图。
附图标记说明：10-第一电连接部，101-第一弯折部，102-第二弯折部，11-第一支撑部，12-第二支撑部，20-第二电连接部，21-第三支撑部，31-第一端面，32-第二端面，33-侧壁，4-第一绝缘层，51-第一焊点部，52-第二焊点部。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论，但在适当情况下，所述技术和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
在本公开的一个实施例中，公开了一种储能装置，如图1，图2所示，该储能装置包括壳体和第一极片。
所述壳体包括第一端面31、第二端面32和侧壁33，所述第一端面31与所述侧壁33的一端连接，所述第二端面32与所述侧壁33的另一端连接。
所述第一极片包括第一支撑部11、第二支撑部12以及分别与第一支撑部11和第二支撑部12连接的第一电连接部10，所述第一支撑部11和所述第二支撑部12均与所述侧壁33电连接，所述第一电连接部10与所述侧壁33间隔设置。
在该实施例中，第一极片上的第一电连接部10通过第一支撑部11和 第二支撑部12与侧壁33形成电连接，从而使第一电连接部10与侧壁33之间形成间隔。在组装储能装置时，在第一支撑部11与侧壁33之间，以及第二支撑部12与侧壁33之间进行连接。第一电连接部10被第一支撑部11和第二支撑部12支撑并与侧壁33间隔形成悬空的结构，以使第一电连接部10与侧壁33表面不接触。这样能够减少第一极片与侧壁33连接区域的面积，从而减少连接过程中需要用到的侧壁33上的面积，避免设置第一极片对侧壁33造成损坏。
例如，将第一极片与侧壁33连接时需要进行焊接。减小第一极片与侧壁33之间连接区域的面积，能够减小焊接涉及到的侧壁33的面积，从而避免焊接对侧壁造成损坏，以保护储能装置的壳体。
可选地，储能装置包括一个第一极片，作为储能装置的正极，还包括另一个与第一极片结构相同的极片作为储能装置的负极。作为正极的第一极片设置在侧壁33上并与储能装置电芯的正极导通，作为负极的极片与储能装置电芯的负极导通，作为负极的极片位于侧壁33并与侧壁33之间绝缘。
例如，储能装置的壳体具有内腔，内腔中设置有电芯，电芯的正极与侧壁33导通，作为正极的第一极片与侧壁33导通。第一端面31与电芯的负极导通，作为负极的极片与第一端面31电连接。
在一个实施例中，所述侧壁33为筒状结构，所述第一支撑部11和所述第二支撑部12为弧形结构，所述第一支撑部11和所述第二支撑部12相对设置在所述第一电连接部10的两侧。
在该实施例中，第一端面31在筒状结构的一端形成连接，第二端面32在筒状结构的另一端形成连接，从而使侧壁33与第一端面31以及第二端面32形成具有内腔的壳体。
筒状结构的侧壁33外侧呈弧形，第一支撑部11的弧形结构能够贴合在侧壁33的外侧，第二支撑部12的弧形结构能够贴合在侧壁33的外侧。使第一支撑部11和第二支撑部12与侧壁33的连接更加方便，并且使第一极片与侧壁33的连接结构更加紧凑，不会占用额外空间。
第一支撑部11和第二支撑部12支撑第一电连接部10，相对设置在第 一电连接部10两侧能够提供稳定的支撑，以使第一电连接部10结构更加稳定。
在一个实施例中，所述第一电连接部10为片状结构。
第一电连接部10在第一支撑部11与第二支撑部12之间设置，第一电连接部10用于与外部电路导通。例如，外部电路的导线与第一电接部10电连接，以使储能装置的对应电极与外部电路导通。
片状结构的第一电连接部10更方便连接外部电路，片状结构的表面更容易操作，以与外部电路电连接。例如，片状结构的第一电连接部10的表面与外部电路抵接，片状结构具有足够的表面面积用于接触外部电路，提高了电路连接的稳定性。
在一个实施例中，如图3，图4所示，所述第一支撑部11与所述第一电连接部10之间设有第一弯折部101，所述第一弯折部101朝向所述第一支撑部11远离所述侧壁33的一侧弯折，所述第二支撑部12与所述第一电连接部10之间设有第二弯折部102，所述第二弯折部102朝向所述第二支撑部12远离所述侧壁33的一侧弯折。
在该实施例中，第一弯折部101沿第一支撑部11向远离侧壁33的一侧弯折，第二弯折部102沿第二支撑部12向远离侧壁33的一侧弯折，使第一电连接部10与侧壁33之间保持间距。第一弯折部101和第二弯折部102为弯折结构，弯折结构的结构强度更高，能够提高第一电连接部10与侧壁33保持间距的稳定性，以提高第一极片结构的可靠性。
例如，外部电路与第一电连接部10导通的过程中，可以与第一电连接部10背向侧壁33的一侧连接，也可以与第一电连接部10朝向侧壁33的一侧连接。第一电连接部10与侧壁33的间距使第一电连接部10形成悬空的结构，更方便与外部电路形成连接。
在一个实施例中，如图1，图2所示，该储能装置还包括第二极片，所述第二极片包括第三支撑部21以及与所述第三支撑部21连接的第二电连接部20，所述第三支撑部21与所述第一端面31电连接，所述第二电连接部20位于所述侧壁33，所述第二电连接部20与所述侧壁33之间设有第一绝缘层4。
在该实施例中，第三支撑部21从第一端面31上引出第二极片，第二极片弯折以使第二电连接部20位于侧壁33上。第一绝缘层4在第二电连接部20与侧壁33之间形成绝缘。
第一端面31与侧壁33之间形成绝缘，第一端面31与储能装置电芯的负极导通，使第二极片作为负极极片，侧壁33和第二端面32与储能装置电芯的正极导通，使第一极片作为正极极片。
在一个实施例中，所述第一电连接部10设置有第一金属镀层，所述第二电连接部20设置有第二金属镀层。
第一金属镀层和第二金属镀层能够增加对应的第一电连接部10和第二电连接部20的导电性。第一金属镀层和第二金属镀层可以是相同的金属镀层。
例如，金属镀层的材料可以是金、银、锡、镍等具有较好导电性能的金属，以增加第一电连接部10和第二电连接部20的导电性。
可选地，所述第一金属镀层的厚度大于2μm，所述第二金属镀层厚度大于2μm。
第一金属镀层和第二金属镀层的厚度设置在大于2μm的范围，能够保障金属镀层保持稳定的导电性。避免长时间使用或磨损使金属镀层失效。
第一金属镀层可以设置在第一电连接部10的朝向和背向侧壁的两侧中的任意一侧，用于与外部电路导通。也可以在第一电连接部10的朝向和背向侧壁的两侧均设置第一金属镀层，以使第一电连接部10与外部电路连接更加方便。
可选地，第一极片与侧壁33以及第二极片与第一端面31均为激光焊接的连接结构，也可以使用其他焊接方式形成连接。焊接过程可以采用点焊的方式进行操作，避免持续焊接对部件造成损坏。第一支撑部11和第二支撑部12使第一极片与侧壁33形成连接，能够减小在第一极片上焊接的面积，进一步减少对储能装置的损坏。
在一个实施例中，如图1所示，所述第一支撑部11和所述第二支撑部12上形成多个第一焊点部51，所述第一焊点部51的宽度尺寸为0.05mm-0.30mm，相邻的两个第一焊点部51之间的距离为0.1mm-0.5mm。
在第一支撑部11和第二支撑部12上形成多个第一焊点部51，使第一极片与侧壁33形成牢固的连接。第一焊点部51的宽度尺寸的范围为0.05mm-0.30mm，能够保证各第一焊点部51的连接强度，并且使各第一焊点部51的面积不会过大，不会在焊接过程中造成损坏。
相邻的两个第一焊点部51需要保持间距，避免形成连续的焊接。间距的范围为0.1mm-0.5mm，既能够避免形成连续的焊接损坏部件的结构强度，又能具有足够的连接强度。
在一个实施例中，如图1所示，所述第三支撑部21上形成多个第二焊点部52，所述第二焊点部52的宽度尺寸为0.05mm-0.30mm，相邻的两个第二焊点部52之间的距离为0.1mm-0.5mm。
在该实施例中，第二焊点部52的宽度尺寸在保证各第二焊点部52的连接强度的同时，又避免焊接点面积过大造成对部件的损坏。
各第二焊点部52之间的间距既能够避免形成连续的焊接损坏部件的结构强度，又能具有足够的连接强度。
在一个实施例中，所述第一极片与所述第二极片之间的间距大于0.5mm。
第一极片和第二极片作为储能装置的不同电极，例如，第一极片作为正极，第二极片作为负极。第一极片和第二极片之间的间距保持大于0.5mm能够有效避免第一极片与第二极片发生短路，提高了储能装置的安全性能。
例如，在第一极片与第二极片之间设置具有绝缘材料的分隔结构，分隔结构在第一极片与第二极片之间空出的位之内沿壳体延伸分布。分隔结构的高度高于对应位置两侧的第一极片和第二极片的高度即可，能够有效地在第一极片与第二极片之间形成绝缘。
上文实施例中重点描述的是各个实施例之间的不同，各个实施例之间不同的优化特征只要不矛盾，均可以组合形成更优的实施例，考虑到行文简洁，在此则不再赘述。
虽然已经通过示例对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围 和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种储能装置，其特征在于，包括壳体和第一极片；
    所述壳体包括第一端面、第二端面和侧壁，所述第一端面与所述侧壁的一端连接，所述第二端面与所述侧壁的另一端连接；
    所述第一极片包括第一支撑部、第二支撑部以及分别与第一支撑部和第二支撑部连接的第一电连接部，所述第一支撑部和所述第二支撑部均与所述侧壁电连接，所述第一电连接部与所述侧壁间隔设置。
  2. 根据权利要求1所述的储能装置，其特征在于，所述侧壁为筒状结构，所述第一支撑部和所述第二支撑部为弧形结构，所述第一支撑部和所述第二支撑部相对设置在所述第一电连接部的两侧。
  3. 根据权利要求1或2所述的储能装置，其特征在于，所述第一电连接部为片状结构。
  4. 根据权利要求1-3任意一项所述的储能装置，其特征在于，所述第一支撑部与所述第一电连接部之间设有第一弯折部，所述第一弯折部朝向所述第一支撑部远离所述侧壁的一侧弯折，所述第二支撑部与所述第一电连接部之间设有第二弯折部，所述第二弯折部朝向所述第二支撑部远离所述侧壁的一侧弯折。
  5. 根据权利要求1-4任意一项所述的储能装置，其特征在于，所述第一支撑部和所述第二支撑部上形成多个第一焊点部，所述第一焊点部的宽度尺寸为0.05mm-0.30mm，相邻的两个第一焊点部之间的距离为0.1mm-0.5mm。
  6. 根据权利要求1-5任意一项所述的储能装置，其特征在于，还包括第二极片，所述第二极片包括第三支撑部以及与所述第三支撑部连接的第 二电连接部，所述第三支撑部与所述第一端面电连接，所述第二电连接部位于所述侧壁，所述第二电连接部与所述侧壁之间设有第一绝缘层。
  7. 根据权利要求1-6任意一项所述的储能装置，其特征在于，所述第一电连接部设置有第一金属镀层，所述第二电连接部设置有第二金属镀层。
  8. 根据权利要求1-7任意一项所述的储能装置，其特征在于，所述第一金属镀层的厚度大于2μm，所述第二金属镀层厚度大于2μm。
  9. 根据权利要求1-8任意一项所述的储能装置，其特征在于，所述第三支撑部上形成多个第二焊点部，所述第二焊点部的宽度尺寸为0.05mm-0.30mm，相邻的两个第二焊点部之间的距离为0.1mm-0.5mm。
  10. 根据权利要求1-9任意一项所述的储能装置，其特征在于，所述第一极片与所述第二极片之间的间距大于0.5mm。
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