WO2020215908A1 - 电池模组以及电池包 - Google Patents

电池模组以及电池包 Download PDF

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Publication number
WO2020215908A1
WO2020215908A1 PCT/CN2020/078448 CN2020078448W WO2020215908A1 WO 2020215908 A1 WO2020215908 A1 WO 2020215908A1 CN 2020078448 W CN2020078448 W CN 2020078448W WO 2020215908 A1 WO2020215908 A1 WO 2020215908A1
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WO
WIPO (PCT)
Prior art keywords
spacer
battery module
adjacent
abutting surfaces
connecting portion
Prior art date
Application number
PCT/CN2020/078448
Other languages
English (en)
French (fr)
Inventor
金海族
游凯杰
侯跃攀
马俊
林伟龙
陈兴地
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to JP2021554406A priority Critical patent/JP2022529881A/ja
Publication of WO2020215908A1 publication Critical patent/WO2020215908A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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 disclosure relates to the battery field, in particular to a battery module and a battery pack.
  • the battery module includes an upper base plate, a lower base plate, and a plurality of battery cells arranged side by side, and the batteries are fixed between the upper base plate and the lower base plate.
  • the structure of the existing battery module is unreasonable, resulting in accumulation of battery cell deformation and impaired performance of the battery module.
  • the present disclosure provides a battery module and a battery pack to optimize the structure of the battery module.
  • the embodiment of the present disclosure provides a battery module, including:
  • a plurality of cells including a first surface provided with electrode terminals, a second surface opposite to the first surface, and a side surface located between the first surface and the second surface; the side surface includes abutting A surface and a connecting surface connected to the abutting surface; a plurality of the cells are arranged along the length direction, and the abutting surfaces of all the cells are facing each other; and
  • the first spacer is at least partially arranged between the abutting surfaces of two adjacent cells and is fixed to the two abutting surfaces; the first spacer is configured to be fixed to the box.
  • a layer of insulating material is installed in the gap.
  • the first spacer includes:
  • the first spacer is provided between two adjacent abutting surfaces and is fixed to both of the abutting surfaces;
  • the first connecting portion is connected to the first spacer; the first connecting portion is located outside of the two adjacent abutting surfaces, and is connected to the connecting surface of the two adjacent cells or the second The surfaces are fixed and connected.
  • first spacers there are multiple first spacers, and at least one first spacer is fixed between any two adjacent adjacent surfaces.
  • the first spacer and two adjacent abutting surfaces are connected by adhesive.
  • first connecting portion and the connecting surface or the second surface of two adjacent cells are connected by an adhesive.
  • the first connecting portion and the first spacer portion are detachably connected or integrated.
  • the length of the first connecting portion is longer than the length of the abutting surface, and the portion of the first connecting portion located outside the abutting surface is provided with a connecting structure for connecting with the box.
  • the connecting structure includes a screw hole, and an axis of the screw hole is substantially parallel to the thickness direction of the first spacer.
  • the battery module further includes:
  • the second spacer is at least partially arranged between the adjacent surfaces of two adjacent cells, and is fixed to both of the adjacent surfaces.
  • the second spacer includes:
  • the second spacer is provided between the abutting surfaces of two adjacent cells and is fixed to the abutting surfaces of two adjacent cells;
  • the second connecting part is fixedly connected to the second spacer part or is integral, and is located outside the abutting surface of two adjacent cells.
  • the number of the second spacer and the second connecting part is multiple, one of the second connecting part is connected to a plurality of the second spacers, two adjacent The second spacer is provided between the adjacent surfaces of the battery core.
  • the battery module further includes:
  • An end plate at least one of the two ends of the batteries arranged in a row is provided with at least one end plate; the end plate is fixedly connected to the second connecting portion, or the end plate is used to connect with The box body is fixedly connected; wherein, the box body is configured to install the battery module.
  • a battery pack including a box body and the battery module provided by any technical solution of the present disclosure, and the battery module is installed inside the box body.
  • the battery module provided by the above-mentioned technology Fangan is provided with a first spacer in the direction of the expansion of the battery module to form a stack, that is, the first spacer is arranged between the adjacent surfaces of the battery cells arranged in a row, the first The size of the spacer is smaller than the size of the abutting surface, so due to the existence of the first spacer, there is a gap between two adjacent abutting surfaces. This gap provides a buffer space for the expansion of the cell, so that the expansion of the cell is restricted In this space, the expansion and accumulation of adjacent cells due to contact is reduced or even avoided. Moreover, because the first spacer is provided, the battery core is not in contact with the battery core, which effectively reduces the heat transfer between the battery cores and has a better heat dissipation effect.
  • FIG. 1 is an exploded schematic diagram of a battery module provided by some embodiments of the disclosure.
  • FIG. 2 is a schematic diagram of an exploded view of battery cells of a battery module provided by some embodiments of the disclosure
  • Fig. 3 is an enlarged schematic diagram of the battery module shown in Fig. 1 after installation at A;
  • FIG. 4 is a three-dimensional schematic diagram of a battery module provided by some embodiments of the disclosure.
  • FIG. 5 is a schematic structural diagram of a first spacer of a battery module provided by some embodiments of the disclosure.
  • FIG. 6 is a schematic structural diagram of a second spacer of a battery module provided by some embodiments of the disclosure.
  • FIG. 7 is an exploded schematic diagram of a battery pack provided by some embodiments of the disclosure.
  • FIG. 8 is an exploded schematic diagram of battery packs provided by still other embodiments of the present disclosure.
  • FIG. 9 is an exploded schematic diagram of battery packs provided by still other embodiments of the present disclosure.
  • FIG. 10 is an exploded schematic diagram of battery packs provided by other embodiments of the disclosure.
  • Some embodiments of the present disclosure provide a battery pack including a box body 5 and the battery module provided by any technical solution of the present disclosure, and the battery module is installed inside the box body 5.
  • each cell 1 includes four sides 13. There are four ways in which the cells 1 are arranged in rows, as shown in Figs. 7 to 10 respectively.
  • FIG. 7 illustrates that the side surface 13 with a smaller size is used as the abutting surface 14 and the first surface 11 is arranged forward.
  • FIG. 8 illustrates that the side surface 13 with a smaller size is used as the abutting surface 14 and the first surface 11 is arranged upward.
  • FIG. 9 illustrates that the side surface 13 with a larger size is used as the abutting surface 14 and the first surface 11 is arranged forward.
  • FIG. 10 illustrates that the side surface 13 with a larger size is used as the abutting surface 14 and the first surface 11 is arranged upward.
  • some embodiments of the present disclosure provide a battery module including a battery cell 1 and a first spacer 2.
  • the cell 1 includes a first surface 11 provided with an electrode terminal 10, a second surface 12 opposite to the first surface 11, and a side surface 13 located between the first surface 11 and the second surface 12.
  • the side surface 13 includes an abutting surface 14 and a connecting surface 15 connected to the abutting surface 14.
  • the number of the battery cells 1 is multiple, and the multiple battery cells 1 are arranged along the length direction, and the abutting surfaces 14 of all the battery cells 1 face each other.
  • the length direction refers to the length direction L1 of the box 5, as shown in FIG. 1.
  • the cell 1 includes a housing 17, an electrode assembly 18 provided inside the housing 17, a connector 19 provided at the end of the electrode assembly 18, and a cover plate 100 covering the connector 19 and the end of the electrode assembly 18.
  • the cover plate 100 is provided with electrode terminals 10.
  • the cover plate 100 is provided at the opening of the housing 17.
  • the electrode assembly 18 is installed inside the case 17 via an opening.
  • the outer surface of the cover plate 100 serves as the first surface 11 of the cell described below, and the surface opposite to the open end of the housing 17 serves as the second surface 12 of the cell described below.
  • the four side surfaces of the casing 17 serve as the four side surfaces of the cell 1.
  • FIG. 1 illustrates the three-dimensional structure of the battery cell 1.
  • the cell 1 includes a first surface 11, a second surface 12 and four side surfaces 13.
  • the first surface 11 is provided with positive and negative electrode terminals.
  • the side surface 13 bonded to the other cell 1 is the adjacent surface 14, and the side surface parallel to the adjacent surface is also the adjacent surface 14.
  • the side surface 13 other than the abutting surface 14 is the connecting surface 15. Referring to FIG. 1 or FIG. 4, the cell 1 has two adjacent surfaces 14 and two connecting surfaces 15.
  • the battery cells 1 arranged in a row are electrically connected, specifically, the electrode terminals 10 of each battery cell 1 are electrically connected through the connecting piece 16.
  • the size of the first spacer 21 is smaller than the size of the abutting surface 14 so that there is a gap between two adjacent abutting surfaces 14.
  • the size of the first spacer 2 is smaller than the size of the abutting surface 14, so between the two adjacent abutting surfaces 14, due to the existence of the first spacer 2, there is a gap between the two adjacent abutting surfaces 14.
  • the width of the gap is, for example, 1 mm to 10 mm.
  • the existence of the gap allows the expansion of the two abutting surfaces 14 to be restricted within the gap. In terms of the row of cells arranged in a row, that is, the cells 1 will not directly abut the adjacent cells 1 after expansion, so that the entire row of cells will not be excessively deformed due to expansion.
  • a heat insulating material layer (not shown in the figure) is installed in the gap to reduce the temperature influence of two adjacent battery cores 1.
  • first spacers 21 there are multiple first spacers 21, and at least part of the first spacer 2 is provided between the abutting surfaces 14 of any two adjacent cells 1 , That is, the first spacer 21 is provided.
  • the first spacer 21 makes the cells 1 firmly connected to form a whole.
  • the first spacer 2 includes a first spacer 21 and a first connecting part 22.
  • the first spacer 21 is provided between two adjacent abutting surfaces 14 and is connected to both abutting surfaces 14.
  • the first connecting portion 22 is connected to the first spacer 21, specifically, for example, fixedly connected or integrated.
  • the first connecting portion 22 is located outside the two adjacent abutting surfaces 14 and is fixedly connected to the connecting surface 15 or the second surface 12 of the two adjacent cells 1.
  • the first connecting portion 22 and the first spacer portion 21 are connected by, for example, an adhesive.
  • the first connecting portion 22 is connected to the connecting surface 15 or the second surface 12 of the two adjacent cells 1 by, for example, an adhesive.
  • first connecting portion 22 may be connected to the connecting surface 15 or the second surface 12.
  • 4, 7, and 9 illustrate the connection between the first connecting portion 22 and the connecting surface 15.
  • 8 and 10 illustrate the connection between the first connecting portion 22 and the second surface 12 of two adjacent cells 1.
  • the bonding of the first connecting portion 22 and the connecting surface 15 is beneficial to the structural stability of the entire battery module. Therefore, optionally, the first connecting portion 22 and the first spacer 21 are both A flat plate is used, and the first connecting portion 22 and the first spacer portion 21 are perpendicular.
  • the first connecting portion 22 and the connecting surfaces 15 of two adjacent cells 1 are fixedly connected, for example, by glue.
  • the first connecting portion 22 is fixed to the connecting surfaces 15 of two adjacent battery cells 1 so that the entire battery module has more fixing points and the distribution of the fixing points is more uniform.
  • the battery pack has better stress, better structural strength, and higher structural reliability.
  • the length of the first connecting portion 22 is longer than the length of the abutting surface 14, and the portion of the first connecting portion 22 located outside the abutting surface 14 is provided with a connecting structure for connecting with the box 5.
  • the box body 5 is used to install battery modules.
  • the connecting structure 23 is, for example, a screw hole, and the battery module and the box body 5 are installed together by installing a bolt in the screw hole.
  • the axis of the screw hole is substantially parallel to the center line of the thickness direction of the first spacer 21.
  • the connecting structure 23 includes a screw hole, the center of the screw hole is located on the line L2 of the center line of the thickness direction of the first spacer 21, so that the first connecting part 22 is located on both sides of the first spacer 21
  • the area of the part is approximately the same.
  • the connection area of the first connection portion 22 and the two adjacent cells 1 are approximately the same, and the structural stability of the entire battery module is good.
  • the battery module further includes a second spacer 3, at least part of the second spacer 3 is provided between the abutting surfaces 14 of two adjacent cells 1
  • the second spacer 3 and the first spacer 2 have a gap between the second spacer 3 and the first spacer 2 and are connected to both abutting surfaces 14.
  • the gap between the second spacer 3 and the first spacer 2 is a buffer space in which the cell 1 expands.
  • the second spacer 3 is arranged to make the gap between the two connected battery cores 1 more uniform, and reduce the situation that one gap is large and one gap is small.
  • the second spacer 3 includes a second spacer 31 and a second connecting part 32.
  • the second spacer 31 is provided between two adjacent abutting surfaces 14 and is connected to both abutting surfaces 14.
  • the second connecting portion 32 is fixedly connected to the second spacer portion 31 or is integrated.
  • the second connecting portion 32 is located outside the two adjacent abutting surfaces 14.
  • the second connecting portion 32 in order to make the second connecting portion 32 adhere to the connecting surface 15 of the cell 1, the second connecting portion 32 is perpendicular to the second spacer portion 31.
  • the second connecting portion 32 has a right-angle shape, such as an L-shaped plate.
  • the second spacer 31 is connected to the second connecting portion 32, and the second connecting portion 32 is provided at the corner of the battery core 1. Place.
  • a second spacer 3 is respectively provided at two adjacent edges of a row of battery packs. Each second spacer 3 is provided with a plurality of second connecting portions 32. There are two second spacers 31 between the adjacent surfaces 14 of every two adjacent cells 1.
  • the first spacer 2 is located at one end of the gap between two adjacent cells 1, and the two second spacers 3 are located at the other end of the gap between two adjacent cells 1.
  • the thickness of the first spacer 2 is equal to the thickness of the two second spacers 3.
  • the first spacer 2 and the two second spacers 3 make the size of the space at both ends basically the same. Such arrangement makes the structure of the battery module stable and tidy.
  • the second connecting portion 32 is fixedly connected to the connecting surfaces 15 of two adjacent battery cells 1.
  • the second connecting portion 32 is connected to the connecting surfaces 15 of two adjacent cells 1 by an adhesive.
  • the number of the second spacers 31 and the second connecting parts 32 are both multiple.
  • a plurality of second spacers 31 are connected to one second connecting portion 32, and the second spacers 31 are provided between the abutting surfaces 14 of two adjacent cells 1 of the battery cells 1 arranged in a row.
  • the battery module further includes an end plate 4, and at least one end plate 4 is provided on at least one of the two ends of the battery cells 1 arranged in a row.
  • the end plate 4 is fixedly connected to the second connecting portion 32.
  • the end plate 4 is used for fixed connection with the box body 5.
  • the box body 5 is used to install battery modules.
  • the end plate 4 and the second connecting portion 32 are fixedly connected to form a relatively stable frame in which the battery cells 1 arranged in rows are located. This structure makes the structure of the battery module more stable.
  • the screw 6 is used to connect both the second connecting portion 32 and the end plate 4 to the box body 5.
  • the box body 5 is used to install battery modules.
  • This structure increases the battery module to be installed in the box 5 stably and reliably.
  • the box body 5 includes a first box body 53 and a second box body 54.
  • the first box 53 and the second box 54 form an accommodating cavity, and the battery module is installed in the accommodating cavity.
  • the inner wall of the second box 54 is provided with a first fixing portion 51 and a second fixing portion 52 described below.
  • the first fixing part 51 and the second fixing part 52 are both fixed to the battery module to realize the multi-point fixing of the battery module in the accommodating cavity, so that the fixing points of the battery module are more and more dispersed, and the battery module The force is more uniform.
  • a first fixing portion 51 is installed at the bottom of the box 5, and the connecting structure 23 on the first connecting portion 22 of the battery module is detachably connected to the first fixing portion 51.
  • the first fixing portion 51 is, for example, a metal rod provided with a screw hole, and is welded to the inner wall surface of the second box 54.
  • the connecting structure 23 is, for example, a screw hole.
  • the detachable connection between the first connecting portion 22 and the first fixing portion 51 is achieved by using bolts to pass through the screw holes.
  • a second fixing portion 52 is installed at the bottom of the box body 5, and the end plate 4 and the second connecting portion 32 of the battery module are detachably connected to the second fixing portion 52 by a screw.
  • the second fixing portion 52 is, for example, a metal rod provided with a screw hole, and is welded to the inner wall surface of the second box 54.
  • the first fixing portion 51 and the second fixing portion 52 each include two, and the first fixing portion 51 and the second fixing portion 52 are enclosed to match the shape of the rows of cells rectangle. It is understandable that other numbers and structures of the first fixing portion 51 and the second fixing portion 52 can also be used to form the required connection frame.
  • one or more battery modules are installed in the box 5.

Abstract

一种电池模组以及电池包，涉及电池领域，用以优化电池模组的结构。该电池模组包括电芯（1）以及第一间隔件（2）。电芯（1）包括设有电极端子（10）的第一表面（11）、与第一表面（11）相对的第二表面（12）、以及位于第一表面（11）和第二表面（12）之间的侧面（13）。侧面（13）包括邻接面（14）以及与邻接面（14）相连的连接面（15）；电芯（1）的数量为多个，且多个电芯（1）沿长度方向排列，所有电芯（1）的邻接面（14）均相互面对。第一间隔件（2）至少部分设于两个相邻的电芯（1）的邻接面（14）之间，且与两个邻接面（14）固定；第一间隔件（2）被构造为与箱体（5）固定。

Description

电池模组以及电池包
本公开是以CN申请号为201920582840.1，申请日为2019年04月26日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本公开中。
技术领域
本公开涉及电池领域，具体涉及一种电池模组以及电池包。
背景技术
电池模组包括上底板、下底板以及多个并排贴合设置的电芯，电芯固定于上底板和下底板之间。
发明人发现，电池模组在工作过程中，会因为膨胀变形。现有的电池模组结构不合理，导致了电芯变形累积，电池模组性能受损。
发明内容
本公开提出一种电池模组以及电池包，用以优化电池模组的结构。
本公开实施例提供一种电池模组，包括：
多个电芯，包括设有电极端子的第一表面、与所述第一表面相对的第二表面、以及位于所述第一表面和所述第二表面之间的侧面；所述侧面包括邻接面以及与所述邻接面相连的连接面；多个所述电芯沿长度方向排列，所有所述电芯的所述邻接面均相互面对；以及
第一间隔件，至少部分设于两个相邻的所述电芯的邻接面之间，且与两个所述邻接面固定；所述第一间隔件被构造为与箱体固定。
在一些实施例中，两个相邻的所述邻接面之间具有间隙。
在一些实施例中，所述间隙内安装有隔热材料层。
在一些实施例中，所述第一间隔件包括：
第一间隔部，设于两个相邻的所述邻接面之间，且与两个所述邻接面均固定；以及
第一连接部，与所述第一间隔部连接；所述第一连接部位于两个相邻的所述邻接面之外，且与两个相邻的所述电芯的连接面或者第二表面均固定相连。
在一些实施例中，所述第一间隔部有多个，任意两个相邻的所述邻接面之间均固定有至少一个所述第一间隔部。
在一些实施例中，所述第一间隔部与两个相邻的所述邻接面均采用粘结剂连接。
在一些实施例中，所述第一连接部与两个相邻的所述电芯的连接面或者第二表面均采用粘结剂连接。
在一些实施例中，所述第一连接部与所述第一间隔部可拆卸连接或者是一体的。
在一些实施例中，所述第一连接部的长度长于所述邻接面的长度，所述第一连接部位于所述邻接面外侧的部分设有用于与箱体连接的连接结构。
在一些实施例中，所述连接结构包括螺孔，所述螺孔的轴心线与所述第一间隔部的厚度方向大致平行。
在一些实施例中，电池模组还包括：
第二间隔件，至少部分设于两个相邻的所述电芯的邻接面之间，且与两个所述邻接面均固定。
在一些实施例中，所述第二间隔件包括：
第二间隔部，设于两个相邻所述电芯的邻接面之间，且与两个相邻所述电芯的邻接面均固定；以及
第二连接部，与所述第二间隔部固定相连或者是一体的，且位于两个相邻电芯的邻接面之外。
在一些实施例中，所述第二间隔部和所述第二连接部的数量都为多个，一个所述第二连接部与多个所述第二间隔部相连，两个相邻所述电芯的邻接面之间都设有所述第二间隔部。
在一些实施例中，电池模组还包括：
端板，成排设置的所述电芯的两端中的至少一端设有至少一个所述端板；所述端板与所述第二连接部固定相连，或者，所述端板用于与箱体固定相连；其中，所述箱体被构造为安装所述电池模组。
本公开另一些实施例提供一种电池包，包括箱体以及本公开任一技术方案所提供的电池模组，所述电池模组安装于所述箱体内部。
上述技术方安提供的电池模组，在电池模组的膨胀形成堆积的方向上设置了第一间隔件，即在成排设置的电芯的邻接面之间设置了第一间隔件，第一间隔件的尺寸小于邻接面的尺寸，所以由于第一间隔件的存在，使得两个相邻的邻接面之间存在间隙， 该间隔为电芯的膨胀提供了缓冲空间，使得电芯的膨胀限制在该空间内，减少甚至避免了相邻的电芯因接触而造成的膨胀积累现象。并且，由于设置了第一间隔件，使得电芯与电芯不接触，有效减少了电芯之间的热传递，散热效果更好。
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此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开一些实施例提供的电池模组的分解示意图；
图2为本公开一些实施例提供的电池模组的电芯分解示意图；
图3为图1所示电池模组的A处安装后的放大示意图；
图4为本公开一些实施例提供的电池模组的立体示意图；
图5为本公开一些实施例提供的电池模组的第一间隔件的结构示意图；
图6为本公开一些实施例提供的电池模组的第二间隔件的结构示意图；
图7为本公开一些实施例提供的电池包的分解示意图；
图8为本公开又一些实施例提供的电池包的分解示意图；
图9为本公开再一些实施例提供的电池包的分解示意图；
图10为本公开另一些实施例提供的电池包的分解示意图。
具体实施方式
下面结合图1～图10对本公开提供的技术方案进行更为详细的阐述。
本公开一些实施例提供一种电池包，包括箱体5以及本公开任一技术方案所提供的电池模组，电池模组安装于箱体5内部。
以电芯1采用长方体结构为例，每个电芯1包括四个侧面13。其电芯1成排布置的方式有四种，分别如图7至图10所示。
图7示意了以尺寸较小的侧面13作为邻接面14，且将第一表面11朝前布置。图8示意了以尺寸较小的侧面13作为邻接面14，且将第一表面11朝上布置。图9示意了以尺寸较大的侧面13作为邻接面14，且将第一表面11朝前布置。图10示意了以尺寸较大的侧面13作为邻接面14，且将第一表面11朝上布置。
下面介绍电池模组的相关内容。
参见图1，本公开一些实施例提供一种电池模组，包括电芯1以及第一间隔件2。电芯1包括设有电极端子10的第一表面11、与第一表面11相对的第二表面12、以及位于第一表面11和第二表面12之间的侧面13。侧面13包括邻接面14以及与邻接面14相连的连接面15。电芯1的数量为多个，且多个电芯1沿长度方向排列，所有的电芯1的邻接面14均相互面对。其中，长度方向是指箱体5的长度方向L1，如图1所示。
参见图2，下面介绍电芯1的结构。
电芯1包括壳体17、设于壳体17内部的电极组件18、设于电极组件18端部的连接件19、以及覆盖连接件19和电极组件18端部的盖板100。盖板100设有电极端子10。
壳体17的一端封闭，一端敞口。盖板100设于壳体17的敞口处。电极组件18经由敞口安装到壳体17内部。
盖板100的外表面作为下文所述电芯的第一表面11，与壳体17的敞口端相对的表面作为下文所述电芯的第二表面12。壳体17的四个侧面作为电芯1的四个侧面。
参见图1，其示意了电芯1的立体结构。以电芯1为长方体结构为例，电芯1包括第一表面11、第二表面12以及四个侧面13。第一表面11设有正、负电极端子。电芯1的四个侧面13中，与其他电芯1贴合的侧面13为邻接面14，与该邻接面平行的侧面也是邻接面14。除邻接面14之外的其他的侧面13为连接面15。参见图1或者图4，电芯1具有2个邻接面14、2个连接面15。
参见图1，成排设置的电芯1是电连接的，具体地，通过连接片16将各电芯1的电极端子10电连接。
参见图3，在一些实施例中，两个相邻的邻接面14之间具有间隙，以使得电芯1散热更好。
参见3，第一间隔部21的尺寸小于邻接面14的尺寸，以使得两个相邻的邻接面14之间具有间隙。
第一间隔件2的尺寸小于邻接面14的尺寸，那么在两个相邻的邻接面14之间，由于第一间隔件2的存在，使得这两个相邻的邻接面14存在间隙，该间隙的宽度比如为1mm～10mm。该间隙的存在使得这两个邻接面14的膨胀限制在该间隙内。从成排设置的这一排电芯来说，即电芯1膨胀后不会直接抵顶相邻的电芯1，使得该成排的电芯整体不会因膨胀而过度变形。
在另一些实施例中，间隙内安装有隔热材料层(图未示出)，以减少相邻两个电芯1的温度影响。
参见图1、图3和图4，在一些实施例中，第一间隔部21有多个，任意两个相邻电芯1的邻接面14之间均设有第一间隔件2的至少部分，即都设置有第一间隔部21。第一间隔部21使得各个电芯1稳固连接形成整体。
参见图3和图5，在一些实施例中，第一间隔件2包括第一间隔部21以及第一连接部22。第一间隔部21设于两个相邻的邻接面14之间，且与两个邻接面14均连接。第一连接部22与第一间隔部21相连，具体比如固定相连或者是一体的。第一连接部22位于两个相邻的邻接面14之外，且与两个相邻的电芯1的连接面15或者第二表面12均固定相连。
第一连接部22与第一间隔部21比如采用粘结剂连接。第一连接部22与两个相邻的电芯1的连接面15或者第二表面12比如采用粘结剂连接。
根据电芯1摆列方向的不同，第一连接部22可能与连接面15或者第二表面12连接。图4、图7、图9示意了第一连接部22与连接面15连接情形。图8、图10示意了第一连接部22与两个相邻的电芯1的第二表面12连接的情形。
具体地，由于电芯1为长方体的结构，第一连接部22与连接面15贴合有利于整个电池模组的结构稳定，故可选地，第一连接部22和第一间隔部21均采用平板，且第一连接部22与第一间隔部21是垂直的。
第一连接部22与两个相邻的电芯1的连接面15比如通过胶合剂固定相连。
将第一连接部22与两个相邻的电芯1的连接面15固定，使得整个电池模组的固定点更多，固定点分布更加均匀。后续采用该电池模组形成电池包时，电池包受力更优，结构强度更好，结构可靠性更高。
参见图4，在一些实施例中，第一连接部22的长度长于邻接面14的长度，第一连接部22位于邻接面14外侧的部分设有用于与箱体5连接的连接结构。其中，箱体5用于安装电池模组。
参见图5和图7，连接结构23比如为螺孔，通过在螺孔中安装螺栓将电池模组与箱体5安装在一起。螺孔的轴心线与第一间隔部21的厚度方向中心线大致平行。
参见图1和图5，连接结构23包括螺孔，螺孔的圆心位于第一间隔部21的厚度方向中心线的连线L2上，以使得第一连接部22位于第一间隔部21两侧的部分面积大致相同，在后续连接时，第一连接部22与两个相邻电芯1的连接面积都大致相同， 整个电池模组的结构稳定性好。
参见图1、图4和图6，在一些实施例中，电池模组还包括第二间隔件3，第二间隔件3的至少部分设于两个相邻的电芯1的邻接面14之间，且与两个邻接面14均连接，第二间隔件3与第一间隔件2之间具有间隙。
第二间隔件3与第一间隔件2之间的间隙是电芯1膨胀的缓冲空间。设置第二间隔件3，使得相连两个电芯1之间的间隙更均匀，减少造成一处间隙大、一处间隙小的情况。
参见图1、图4和图6，在一些实施例中，第二间隔件3包括第二间隔部31以及第二连接部32。第二间隔部31设于两个相邻的邻接面14之间，且与两个邻接面14均连接。第二连接部32与第二间隔部31固定相连或者是一体的。第二连接部32位于两个相邻的邻接面14之外。
在一些实施例中，第二间隔部31与第一间隔件2之间具有间隙，该空隙有利于电芯1散热。
参见图6，为了使得第二连接部32与电芯1的连接面15贴合，第二连接部32与第二间隔部31垂直。
参见图6，在一些实施例中，第二连接部32呈直角形，具体比如L形板，第二间隔部31与第二连接部32相连，第二连接部32设于电芯1的转角处。
参见图1和图4，在一排电池包的两个相邻的棱边处各设有一第二间隔件3。每根第二间隔件3设有多个第二连接部32。每两个相邻的电芯1的邻接面14之间都有两个第二间隔部31。
第一间隔件2位于相邻两个电芯1的间隙的一端，两个第二间隔件3位于相邻两个电芯1的间隙的另一端。第一间隔件2的厚度与两个第二间隔件3的厚度相等。通过第一间隔件2、两个第二间隔件3使得该间隔在两端的尺寸基本一致。如此设置使得电池模组的结构稳固、整齐。
为了使得电池模组的固定点更多，结构更加稳固，在一些实施例中，第二连接部32与两个相邻的电芯1的连接面15均固定相连。
具体地，第二连接部32与两个相邻的电芯1的连接面15通过粘合剂连接。
参见图4和图6，在一些实施例中，第二间隔部31和第二连接部32的数量都为多个。一个第二连接部32连接有多个第二间隔部31，成排设置的电芯1的两个相邻的电芯1的邻接面14之间都设有第二间隔部31。
参见图4，图7至图10，在一些实施例中，电池模组还包括端板4，成排设置的电芯1的两端中的至少一端设有至少一个端板4。端板4与第二连接部32固定相连。或者，端板4用于与箱体5固定相连。其中，箱体5用于安装电池模组。
端板4和第二连接部32固定相连形成较为稳固的框架，成排设置的电芯1位于该框架内。该结构使得电池模组的结构更加稳固。
在一些实施例中，采用螺杆6将第二连接部32和端板4都与箱体5连接。其中，箱体5用于安装电池模组。
该结构增加了使得电池模组稳固、可靠地安装于箱体5内部。
下面介绍电池模组在箱体5内的安装关系。
参见图7至图10，箱体5包括第一箱体53和第二箱体54。第一箱体53和第二箱体54形成容置空腔，电池模组安装于该容置空腔内。
第二箱体54内壁安装有下文所述的第一固定部51和第二固定部52。第一固定部51和第二固定部52均与电池模组固定，以实现电池模组在容置空腔内的多点固定，使得电池模组的固定点更多、更分散，电池模组受力更加均匀。
具体地，在一些实施例中，箱体5的底部安装有第一固定部51，电池模组的第一连接部22上的连接结构23与第一固定部51可拆卸连接。
第一固定部51比如为设有螺孔的金属杆件，焊接于第二箱体54的内壁表面。
连接结构23比如为螺孔。采用螺栓穿过螺孔实现第一连接部22与第一固定部51的可拆卸连接。
在一些实施例中，箱体5的底部安装有第二固定部52，电池模组的端板4以及第二连接部32通过螺杆与第二固定部52可拆卸连接。
第二固定部52比如为设有螺孔的金属杆件，焊接于第二箱体54的内壁表面。
参见图7至图10，在一些实施例中，第一固定部51和第二固定部52各包括两根，第一固定部51和第二固定部52围成与成排电芯形状匹配的矩形。可以理解的是，亦可采用其他数量和结构的第一固定部51和第二固定部52形成所需要的连接框架。
在一些实施例中，箱体5内安装有一个或者一个以上的电池模组。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”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，仅是为便于描述本公开和简化描述，而不是指示或暗指所指的装置或元件必须具有特定的方位、为特定的方位构造和操作，因而不能理 解为对本公开保护内容的限制。
最后应说明的是：以上实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。

Claims (15)

  1. 一种电池模组，包括：
    多个电芯(1)，包括设有电极端子(10)的第一表面(11)、与所述第一表面(11)相对的第二表面(12)、以及位于所述第一表面(11)和所述第二表面(12)之间的侧面(13)；所述侧面(13)包括邻接面(14)以及与所述邻接面(14)相连的连接面(15)；多个所述电芯(1)沿长度方向排列，所有所述电芯(1)的所述邻接面(14)均相互面对；以及
    第一间隔件(2)，至少部分设于两个相邻的所述电芯(1)的邻接面(14)之间，且与两个所述邻接面(14)固定；所述第一间隔件(2)被构造为与箱体(5)固定。
  2. 根据权利要求1所述的电池模组，其中，两个相邻的所述邻接面(14)之间具有间隙。
  3. 根据权利要求2所述的电池模组，其中，所述间隙内安装有隔热材料层。
  4. 根据权利要求1～3任一所述的电池模组，其中，所述第一间隔件(2)包括：
    第一间隔部(21)，设于两个相邻的所述邻接面(14)之间，且与两个所述邻接面(14)均固定；以及
    第一连接部(22)，与所述第一间隔部(21)连接；所述第一连接部(22)位于两个相邻的所述邻接面(14)之外，且与两个相邻的所述电芯(1)的连接面(15)或者第二表面(12)均固定相连。
  5. 根据权利要求4所述的电池模组，其中，所述第一间隔部(21)有多个，任意两个相邻的所述邻接面(14)之间均固定有至少一个所述第一间隔部(21)。
  6. 根据权利要求4所述的电池模组，其中，所述第一间隔部(21)与两个相邻的所述邻接面(14)均采用粘结剂连接。
  7. 根据权利要求4所述的电池模组，其中，所述第一连接部(22)与两个相邻的所述电芯(1)的连接面(15)或者第二表面(12)均采用粘结剂连接。
  8. 根据权利要求4所述的电池模组，其中，所述第一连接部(22)与所述第一间隔部(21)可拆卸连接或者是一体的。
  9. 根据权利要求4所述的电池模组，其中，所述第一连接部(22)的长度长于所述邻接面(14)的长度，所述第一连接部(22)位于所述邻接面(14)外侧的部分设有用于与所述箱体(5)连接的连接结构(23)。
  10. 根据权利要求9所述的电池模组，其中，所述连接结构(23)包括螺孔，所述螺孔的轴心线与所述第一间隔部(21)的厚度方向大致平行。
  11. 根据权利要求1～10任一所述的电池模组，还包括：
    第二间隔件(3)，至少部分设于两个相邻的所述电芯(1)的邻接面(14)之间，且与两个相邻所述电芯(1)的邻接面(14)均固定。
  12. 根据权利要求11所述的电池模组，其中，所述第二间隔件(3)包括：
    第二间隔部(31)，设于两个相邻所述电芯(1)的邻接面(14)之间，且与两个相邻所述电芯(1)的邻接面(14)均固定；以及
    第二连接部(32)，与所述第二间隔部(31)固定相连或者是一体的，且位于两个相邻所述电芯(1)的邻接面(14)之外。
  13. 根据权利要求12所述的电池模组，其中，所述第二间隔部(31)和所述第二连接部(32)的数量都为多个，一个所述第二连接部(32)与多个所述第二间隔部(31)相连，两个相邻所述电芯(1)的邻接面(14)之间都设有所述第二间隔部(31)。
  14. 根据权利要求12所述的电池模组，还包括：
    端板(4)，成排设置的所述电芯(1)的两端中的至少一端设有至少一个所述端板(4)；所述端板(4)与所述第二连接部(32)固定相连，或者，所述端板(4) 被构造为与箱体(5)固定相连；其中，所述箱体(5)被构造为安装所述电池模组。
  15. 一种电池包，包括箱体(5)以及权利要求1～14任一所述的电池模组，所述电池模组安装于所述箱体(5)内部。
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