WO2019148628A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2019148628A1
WO2019148628A1 PCT/CN2018/081135 CN2018081135W WO2019148628A1 WO 2019148628 A1 WO2019148628 A1 WO 2019148628A1 CN 2018081135 W CN2018081135 W CN 2018081135W WO 2019148628 A1 WO2019148628 A1 WO 2019148628A1
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WO
WIPO (PCT)
Prior art keywords
battery
insulating member
battery module
groove
upper cover
Prior art date
Application number
PCT/CN2018/081135
Other languages
English (en)
French (fr)
Inventor
李中泽
刘杨
王良诣
陈亮美
马林
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.)
Filing date
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
Publication of WO2019148628A1 publication Critical patent/WO2019148628A1/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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the field of energy storage devices, and in particular, to a battery module.
  • the present application provides a battery module that can solve the above problems.
  • the application provides a battery module, including
  • An upper cover the upper cover has an explosion-proof valve, and the upper cover is covered with the housing;
  • a plurality of battery cells a plurality of the battery cells are arranged in the housing, and the battery cells are provided with an explosion-proof valve;
  • An insulating member is disposed between the battery cell and the upper cover, the insulating member includes a body and a pressing protrusion, and a side of the body adjacent to the upper cover is provided with a groove.
  • the recess is disposed opposite to the explosion-proof valve, the groove is provided with a plurality of through holes, and the plurality of through holes are disposed opposite to the plurality of explosion-proof valves of the battery cells; the pressing protrusions Protruding the body to a side of the battery cell;
  • sampling component is pressed between the battery cell and the pressing protrusion.
  • the groove comprises a groove bottom and a groove wall, the groove wall being connected to an edge of the groove bottom, and the groove wall has a closed annular structure.
  • the insulating member further includes a first isolation structure, the first isolation structure is disposed on a side of the body adjacent to the battery unit; and the first isolation structure is disposed between the adjacent connecting members.
  • a plurality of the through holes are arranged in a row, and the plurality of the first isolation structures are arranged in at least one column along an arrangement direction of the plurality of the through holes.
  • the first isolation structure comprises at least two longitudinal ribs disposed opposite each other in the arrangement direction.
  • At least one of said longitudinal ribs extends to said groove.
  • the first isolation structure further comprises lateral ribs, and the adjacent longitudinal ribs are connected by the transverse ribs.
  • the insulating member further includes a second isolation structure, the second isolation structure being located between the battery cell and the housing.
  • the insulating member further includes a limiting protrusion, the limiting protrusion is disposed on a side of the body adjacent to the battery cell, and is closer to the battery cell than the pressing protrusion;
  • the sampling assembly abuts the limiting protrusion.
  • the pressing protrusions are spaced apart from each other.
  • the insulating member is provided with a groove and a pressing protrusion, and the groove is provided with a through hole.
  • the insulating member is provided with a plurality of through holes opposite to the explosion-proof valve. Therefore, the insulator only needs to be assembled so that it is located between the upper cover and the battery unit, and can not only play the role of insulation, but also does not affect the performance of the explosion-proof valve; at the same time, by increasing the pressing protrusion, it can also pass
  • the insulating member plays a fixed role on the sampling component, that is, the insulating member has the function of fixing the sampling component at the same time. Obviously, this kind of insulating member can play a variety of functions, reduce the number of parts, and only need to assemble one part during assembly, which saves the assembly process, thereby reducing the risk of failure of the battery module and improving the battery. Module security.
  • FIG. 1 is a schematic structural view of a specific embodiment of a battery module provided by the present application.
  • FIG. 2 is an exploded view of a specific embodiment of a battery module provided by the present application.
  • FIG. 3 is a schematic structural view of a perspective view of a specific embodiment of an insulating member in a battery module provided by the present application;
  • FIG. 4 is a schematic structural view of another embodiment of an insulating member in a battery module provided by the present application.
  • the embodiment of the present application provides a battery module including a housing 10 , an upper cover 20 , a plurality of battery cells 30 , an insulating member 40 , and a sampling assembly 50 .
  • the housing 10 has an accommodation space.
  • the upper cover 20 has an explosion-proof valve 21 that penetrates the upper cover 20 in the thickness direction of the upper cover 20, and the upper cover 20 is covered with the casing 10.
  • a plurality of battery cells 30 are arranged in the casing 10, and each of the battery cells 30 is provided with an explosion-proof valve 31.
  • the insulating member 40 is disposed between the battery cell 30 and the upper cover 20 to insulate the upper cover 20 from the battery cell 30.
  • the sampling component 50 is disposed on a side of the battery cell 30 adjacent to the upper cover 20 and is electrically connected to the battery cell 30 to sample the battery cell 30.
  • the insulating member 40 includes a body 41 and a pressing protrusion 42.
  • the body 41 has a first surface 411 and a second surface 412 disposed opposite to each other, and defines a side of the body 41 adjacent to the upper cover 20.
  • the first surface 411 is adjacent to the battery cell 30 and has a second surface 412.
  • the first surface 411 is provided with a recess 4111.
  • the recess 4111 is provided with a plurality of through holes 4111a.
  • the pressing protrusion 42 is disposed on the second surface 412. That is, the surface of the body 41 adjacent to the upper cover 20 is provided with a recess 4111.
  • the pressing protrusion 42 protrudes from the side of the body 41 adjacent to the battery unit 30, that is, the pressing portion is pressed.
  • the projections 42 protrude from the body 41 toward the battery cells 30.
  • the recess 4111 is disposed opposite to the explosion-proof valve 21, that is, the direction in which the upper cover 20 is directed toward the battery unit 30, and the projection of the explosion-proof valve 21 at least partially coincides with the projection of the recess 4111.
  • the through holes 4111a are disposed opposite to the explosion-proof valves 31 of the plurality of battery cells 30 such that the gas discharged from the explosion-proof valve 31 enters the grooves 4111 and then exits the outside of the battery module through the explosion-proof valve 21.
  • the sampling assembly 50 is pressed between the battery unit 30 and the pressing protrusion 42 , that is, the pressing protrusion 42 forms a pressing force with the battery unit 30 to fix the sampling assembly 50 .
  • the insulating member 40 is provided with a recess 4111 and a pressing protrusion 42.
  • the recess 4111 is provided with a through hole 4111a.
  • the insulating member 40 is provided with a plurality of through holes 4111a opposite to the explosion-proof valve 31.
  • the gas When gas is discharged from the explosion-proof valve 31, the gas enters the groove 4111 through the through hole 4111a, and then is discharged through the explosion-proof valve 21. Therefore, the insulating member 40 only needs to be assembled to be placed on the upper cover 20 and the battery. Between the monomers 30, it can play the role of insulation without affecting the function of the explosion-proof valve 31.
  • the insulating member 40 can also fix the sampling assembly 50 by adding the pressing protrusions 42, that is, the insulation
  • the piece 40 also functions as a fixed sampling assembly 50.
  • a member of the insulating member 40 can perform various functions, reduce the number of components, and only need to assemble one component during assembly, thereby saving the assembly process and thereby reducing the risk of failure of the battery module. Improve the safety of the battery module.
  • the projection of the explosion-proof valve 21 is located within the projection of the recess 4111 so that the gas in the recess 4111 is expelled as quickly as possible from the outside of the battery module.
  • the direction of the battery cell 30 along the upper cover 20 and the projection of the explosion-proof valve 21 only partially coincides with the projection of the groove 4111.
  • the plurality of explosion-proof valves 31 are also arranged in a row, and the grooves 4111 may be strip-shaped grooves, and the length direction of the strip-shaped grooves is aligned with the arrangement direction of the plurality of battery cells 30.
  • a plurality of through holes 4111a are also arranged in a row. This structure can save the internal space of the battery module, and can also connect the recess 4111 to each of the explosion-proof valves 31.
  • the groove 4111 may be an arc groove.
  • the groove 4111 includes a groove bottom 4111b and a groove wall 4111c, and the groove wall 4111c is connected to the groove bottom.
  • the edge of the 4111b, and the groove wall 4111c has a closed annular structure. This closed annular structure can ensure that the gas is discharged through the explosion-proof valve 21 as much as possible to control the flow of the gas, and the structure can improve the sealing of the battery module.
  • the groove wall 4111c and the groove bottom 4111b may be perpendicular to each other as shown in FIG.
  • the groove 4111 may be recessed by the first surface 411 toward the direction in which the second surface 412 is located.
  • the second surface 412 may be away from the first surface 411 in the region where the groove 4111 is formed, that is, in the process of forming the groove 4111.
  • a convex hull is formed on the second surface 412. It is also possible that the entire surface of the second surface 412 is a planar structure.
  • the plurality of battery cells 30 are formed in a parallel structure or a series structure as needed, or in a series connection structure.
  • the connecting member 60 that is, the battery module further includes a connecting member 60, and the adjacent battery cells 30 are connected through
  • the component 60 is electrically connected, such that a plurality of connectors 60 need to be disposed on one side of the battery cell 30. Since the connectors 60 are directly electrically connected to the positive or negative column of the battery cell 30, adjacent connections are provided.
  • a spacer may be disposed between adjacent connecting members 60, and the connecting member 60 is relatively large, so that a large number of spacers are required, resulting in an increase in the assembly process.
  • the insulating member 40 further includes a plurality of first isolation structures 43 , that is, the insulating member 40 is directly provided with a first isolation structure 43 for isolating the high voltage, and the first isolation structure 43 is disposed on the side of the body 41 adjacent to the battery cells 30 . (ie, the second side 412); a first isolation structure 43 is disposed between the adjacent connectors 60.
  • the plurality of through holes 4111a are arranged in a row.
  • the plurality of first isolation structures 43 are arranged in at least one column along the arrangement direction of the plurality of through holes 4111a (ie, the arrangement direction of the plurality of battery cells 30), that is, the plurality of first isolation structures. 43 can be arranged in one column, two columns or multiple columns.
  • the first isolation structure 43 may include a longitudinal rib 431.
  • the first isolation structure 43 includes at least two longitudinal ribs 431 disposed opposite each other in the above-mentioned arrangement direction, each longitudinal direction.
  • the ribs 431 extend in a direction perpendicular to the above-described arrangement direction.
  • these longitudinal ribs 431 can also function as ribs to increase the strength of the insulating member 40.
  • the first isolation structure 43 further includes lateral ribs 432, and the adjacent longitudinal ribs 431 are connected by the lateral ribs 432, so that even if the first isolation structure 43 is pressed, due to the blocking of the lateral ribs 432, It is difficult to cause a large deformation, and therefore, the rigidity of the first isolation structure 43 is increased, and such a crisscross structure can also increase the strength of the insulating member 40.
  • each of the first isolation structures 43 the lateral ribs 432 may be provided in one piece or in multiple pieces. When a plurality of strips are provided, preferably, each of the first isolation structures 43 has at least two longitudinal ribs 431 and two.
  • the strip lateral ribs 432 enclose a rectangular structure to further increase the strength of the first isolation structure 43 and the insulating member 40.
  • the connecting members 60 are disposed on opposite sides of the recess 4111.
  • the opposite sides of the recess 4111 are provided with the first isolating structure 43 regardless of whether or not lateral direction is provided.
  • the ribs 432 may each have at least one longitudinal rib 431 extending to the groove 4111.
  • the longitudinal rib 431 may extend to the convex hull to further prevent the longitudinal rib 431 from being deformed, thereby ensuring high-pressure isolation.
  • the convex hull is also capable of isolating high voltage interference between the connectors 60 on opposite sides of the recess 4111.
  • the insulating member 40 further includes a second isolation structure 44 connected to the edge of the second surface 412, and the second isolation structure 44 extends from the edge of the second surface 412 in a direction away from the body 41.
  • the second isolation structure 44 is disposed on a side of the body 41 adjacent to the battery unit 30, and is located between the battery unit 30 and the housing 10, that is, at the top of the battery unit 30.
  • the second isolation structure 44 isolates the battery cell 30 from the sidewall of the housing 10 to isolate a high voltage signal between the housing 10 and the battery cell 30, thereby improving the safety of the battery module.
  • the second isolation structure 44 may be circumferentially disposed along the edge of the second surface 412.
  • the second isolation structure 44 is not a closed annular structure, that is, the second isolation structure 44 is provided with a notch to prevent insulation.
  • the piece 40 interferes with other components.
  • the second isolation structure 44 can be formed by bending the body 41 along the edge of the second surface 412. This structure can both function as a high voltage isolation and increase the strength of the insulating member 40.
  • the sampling component 50 is generally a FPC (Flexible Printed Circui), has a substantially sheet-like structure, and has a relatively smooth surface. After the sampling component 50 is mounted on the battery cell 30, the pressing protrusion 42 presses the sampling component 50. When the sampling component 50 is moved on the contact surface with the battery cell 30, the connection accuracy of the sampling component 50 is affected. Therefore, the insulating component 40 of the present application further includes a limiting protrusion 45 and a limiting protrusion.
  • the limiting protrusion 45 is disposed on the second surface 412 , that is, when the insulating member 40 is mounted on the housing 10 , the limiting protrusion 45 is disposed on a side of the body 41 adjacent to the battery unit 30 , and the limiting protrusion 45 extends from the second surface 412 .
  • the size is larger than the size of the pressing protrusion 42 extending from the second surface 412, that is, the end surface of the limiting protrusion 45 is farther from the body 41 than the end surface of the pressing protrusion 42. It is understood that the limiting protrusion 45 protrudes from the second side. 412, and the limiting protrusion 45 is closer to the battery cell 30 than the pressing protrusion 42.
  • the sampling component 50 abuts against the limiting protrusion 45, that is, the side of the sampling component 50 abuts the limiting protrusion 45, and the sampling component The main plane of 50 is attached to the pressing projection 42. With this configuration, the movement of the sampling assembly 50 can be restricted, thereby ensuring the mounting accuracy of the sampling assembly 50.
  • the sampling assembly 50 can be a sheet-like structure, in order to press it, preferably, the pressing protrusions 42 are spaced apart from each other. As shown in FIG. 4, the sampling assembly 50 has a substantially U-shaped structure and is pressed convexly. Four 42 are provided, and four pressing protrusions 42 are respectively pressed against the two sides of the U-shaped structure.
  • the insulating member 40 is preferably a one-piece structure, and can be integrally injection molded.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池模组，涉及储能器件技术领域，该电池模组包括壳体（10）；上盖（20），所述上盖（20）具有防爆阀（21），所述上盖（20）与所述壳体（10）盖合；多个电池单体（30），多个所述电池单体（30）排列于所述壳体（10）内，所述电池单体（30）设置有防爆阀（31）；绝缘件（40），所述绝缘件（40）设置于所述电池单体（30）与所述上盖（20）之间，所述绝缘件（40）包括本体（41）和压紧凸起（42），所述本体（41）靠近所述上盖（20）的一面（411）设置有凹槽（4111），所述凹槽（4111）与所述防爆阀相对设置，所述凹槽（4111）上设置有多个通孔（4111a），且多个通孔（4111a）与多个所述电池单体（30）的防爆阀（31）一一相对设置；所述压紧凸起（42）凸出所述本体（41）靠近所述电池单体（30）的一面（412）；采样组件（50），所述采样组件（50）压设于所述电池单体（30）与所述压紧凸起（42）之间。所述绝缘件（40）能够起到多种功能，减少了电池模组的失效风险点。

Description

电池模组 技术领域
本申请涉及储能器件技术领域，尤其涉及一种电池模组。
背景技术
目前，针对电池模组的高压绝缘防护，往往仅考虑绝缘防护的功能，无法兼容到多方面的功能，有的虽然考虑到其它的功能，但通常采用增加其他辅助器件来实现，这样，既增加了电池模组的装配工序，同时，在实际使用过程中也增加了一个潜在的失效风险点，因此，降低了电池模组的安全性，尤其当电池模组应用于汽车时，可能造成人身安全。
发明内容
本申请提供了一种电池模组，能够解决上述问题。
本申请提供了一种电池模组，包括
壳体；
上盖，所述上盖具有防爆阀，所述上盖与所述壳体盖合；
多个电池单体，多个所述电池单体排列于所述壳体内，所述电池单体设置有防爆阀；
绝缘件，所述绝缘件设置于所述电池单体与所述上盖之间，所述绝缘件包括本体和压紧凸起，所述本体靠近所述上盖的一面设置有凹槽，所述凹槽与所述防爆阀相对设置，所述凹槽上设置有多个通孔，且多个通孔与多个所述电池单体的防爆阀一一相对设置；所述压紧凸起凸出所述本体靠近所述电池单体的一面；
采样组件，所述采样组件压设于所述电池单体与所述压紧凸起之间。
可选地，所述凹槽包括槽底和槽壁，所述槽壁连接于所述槽底的边缘，且所述槽壁呈闭合的环形结构。
可选地，
还包括连接件，相邻的所述电池单体通过所述连接件电连接；
所述绝缘件还包括第一隔离结构，所述第一个隔离结构设置于所述本体靠近所述电池单体的一面；相邻的所述连接件之间设置有所述第一隔离结构。
可选地，多个所述通孔排成一列，沿多个所述通孔的排列方向，多个所述第一隔离结构至少排成一列。
可选地，所述第一隔离结构包括沿所述排列方向相对设置的至少两条纵向肋条。
可选地，至少一条所述纵向肋条延伸至所述凹槽处。
可选地，所述第一隔离结构还包括横向肋条，相邻的所述纵向肋条通过所述横向肋条连接。
可选地，所述绝缘件还包括第二隔离结构，所述第二隔离结构位于所述电池单体与所述壳体之间。
可选地，
所述绝缘件还包括限位凸起，所述限位凸起设置于所述本体靠近所述电池单体的一面，且较所述压紧凸起靠近所述电池单体；
所述采样组件与所述限位凸起相抵靠。
可选地，所述压紧凸起间隔设置有多个。
本申请提供的技术方案可以达到以下有益效果：
本申请所提供的电池模组，绝缘件设置有凹槽和压紧凸起，凹槽上设置有通孔，在电池模组装配时，由于绝缘件设置有多个与防爆阀相对的通孔，因此该绝缘件仅需要装配一个，使其位于上盖与电池单体之间，既能够起到绝缘的作用，又不影响防爆阀的性能；同时，通过增加压紧凸起，还能够通过绝缘件对采样组件起到固定作用，即绝缘件同时具备固定采样组件的作用。显然，这种绝缘件，一个部件能够起到多种功能，减少了零部件的数量，在装配时只需要装配一个部件，节省了装配工序，从而减少了电池模组的失效风险点，提高电池模组的安全性。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
附图说明
图1为本申请所提供的电池模组的一种具体实施例的结构示意图；
图2为本申请所提供的电池模组的一种具体实施例的***视图；
图3为本申请所提供的电池模组中，绝缘件的一种具体实施例的一个视角的结构示意图；
图4为本申请所提供的电池模组中，绝缘件的一种具体实施例的另一个视角的结构示意图。
附图标记：
10-壳体；
20-上盖；
21-防爆阀；
30-电池单体；
31-防爆阀；
40-绝缘件；
41-本体；
411-第一面；
4111-凹槽；
4111a-通孔；
4111b-槽底；
4111c-槽壁
412-第二面；
42-压紧凸起；
43-第一隔离结构；
431-纵向肋条；
432-横向肋条；
44-第二隔离结构；
45-限位凸起；
50-采样组件；
60-连接件。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本 申请的实施例，并与说明书一起用于解释本申请的原理。
具体实施方式
下面通过具体的实施例并结合附图对本申请做进一步的详细描述。
如图1-图2所示，本申请实施例提供了一种电池模组，包括壳体10、上盖20、多个电池单体30、绝缘件40和采样组件50。壳体10具有容纳空间。上盖20具有防爆阀21，防爆阀21沿上盖20的厚度方向贯通上盖20，上盖20与壳体10盖合。多个电池单体30排列于壳体10内，且每个电池单体30均设置有防爆阀31。绝缘件40设置于电池单体30与上盖20之间，以使上盖20与电池单体30之间绝缘。采样组件50设置于电池单体30靠近上盖20的一侧，并与电池单体30电连接，以对电池单体30进行采样。
具体地，如图3、图4所示，绝缘件40包括本体41和压紧凸起42，本体41具有相对设置的第一面411和第二面412，定义本体41靠近上盖20的一面为第一面411，靠近电池单体30的一面为第二面412，第一面411设置有凹槽4111，凹槽4111上设置有多个通孔4111a。压紧凸起42设于第二面412，也就是说，本体41靠近上盖20的一面设置有凹槽4111，压紧凸起42凸出本体41靠近电池单体30的一面，即压紧凸起42自本体41向电池单体30凸出。
在绝缘件40安装于壳体10时，凹槽4111与防爆阀21相对设置，即沿上盖20指向电池单体30的方向，防爆阀21的投影与凹槽4111的投影至少部分重合，多个通孔4111a与多个电池单体30的防爆阀31一一相对设置，以使防爆阀31排出的气体进入凹槽4111，然后通过防爆阀21排出电池模组的外部。采样组件50压设于电池单体30与压紧凸起42之间，即压紧凸起42与电池单体30形成压紧力，将采样组件50固定。
上述绝缘件40设置有凹槽4111和压紧凸起42，凹槽4111上设置有通孔4111a，在电池模组装配时，由于绝缘件40设置有多个与防爆阀31相对的通孔4111a，当防爆阀31处有气体排出时，这些气体经通孔4111a进入凹槽4111内，然后再通过防爆阀21排出，因此，该绝缘件40仅需要装配一个，使其位于上盖20与电池单体30之间，即能够起到绝缘的作 用，又不影响防爆阀31的功能；同时，绝缘件40通过增加压紧凸起42，还能够对采样组件50起到固定作用，即该绝缘件40同时具备固定采样组件50的作用。显然，这种绝缘件40，一个部件便能够起到多种功能，减少了零部件的数量，在装配时只需要装配一个部件，节省了装配工序，从而减少了电池模组的失效风险点，提高了电池模组的安全性。
沿上盖20指向电池单体30的方向，防爆阀21的投影位于凹槽4111的投影内，以使凹槽4111内的气体尽快排出电池模组的外部。当然，也可以沿上盖20指向电池单体30的方向，防爆阀21的投影仅部分与凹槽4111的投影重合。
由于多个电池单体30通常排成一列，因此，多个防爆阀31也排成一列，凹槽4111可以为条形槽，条形槽的长度方向与多个电池单体30的排列方向一致，多个通孔4111a也排成一列。这种结构，既能够节省电池模组的内部空间，也能够使凹槽4111与各防爆阀31相连通。
凹槽4111可以为弧形槽，为了尽可能增大凹槽4111的空间，以容纳多个防爆阀31排出的气体，凹槽4111包括槽底4111b和槽壁4111c，槽壁4111c连接于槽底4111b的边缘，且槽壁4111c呈闭合的环形结构，这种闭合的环形结构，能够保证气体尽可能通过防爆阀21排出，以控制气体的流向，且该种结构能够提高电池模组的密封性。槽壁4111c与槽底4111b可以相互垂直，如图3所示。
凹槽4111可以通过第一面411向第二面412所在的方向凹陷形成，第二面412在形成凹槽4111的区域可以较其它区域远离第一面411，即在形成凹槽4111的过程中，第二面412上形成了凸包。也可以第二面412整面为平面结构。
通常，多个电池单体30根据需要形成并联结构或者串联结构，或者并串联结构，这些结构可以通过连接件60实现，即电池模组还包括连接件60，相邻的电池单体30通过连接件60电连接，这样，在电池单体30的一侧需要设置多个连接件60，由于这些连接件60是直接与电池单体30的正极柱或者负极柱电连接，因此，相邻的连接件60之间可能会造成高压干扰，为了解决该问题，可以在相邻的连接件60之间设置隔离件，而连接件60比较多，这样需要很多个隔离件，导致增加装配工序。本申请 中，绝缘件40还包括多个第一隔离结构43，即绝缘件40上直接设置有隔离高压的第一隔离结构43，第一隔离结构43设置于本体41靠近电池单体30的一面(即第二面412)；相邻的连接件60之间设置有第一隔离结构43。
多个通孔4111a排成一列，沿多个通孔4111a的排列方向(即多个电池单体30的排列方向)，多个第一隔离结构43至少排成一列，即多个第一隔离结构43可以排成一列、两列或者多列。
具体地，如图4所示，第一隔离结构43可以包括一条纵向肋条431，为了增加高压隔离的效果，第一隔离结构43包括沿上述排列方向相对设置的至少两条纵向肋条431，各纵向肋条431沿垂直于上述排列方向的方向延伸，显然，这些纵向肋条431还能够充当加强筋的作用，以增加绝缘件40的强度。
在上盖20与壳体10盖合时，绝缘件40会受到挤压，若相邻的纵向肋条431间隔设置，受挤压力的作用，纵向肋条431会发生较大的变形，影响高压隔离效果，为此，第一隔离结构43还包括横向肋条432，相邻的纵向肋条431通过横向肋条432连接，这样，即使第一隔离结构43受到挤压，由于有横向肋条432的阻挡，也很难发生较大的形变，因此，增加了第一隔离结构43的刚性，且这种纵横交错的结构，还能够增加绝缘件40的强度。
在每个第一隔离结构43中，横向肋条432可以设置一条，也可以设置多条，在设置多条时，优选地，每个第一隔离结构43中，至少有两条纵向肋条431与两条横向肋条432围成矩形结构，以进一步增加第一隔离结构43以及绝缘件40的强度。
可以理解地，在凹槽4111相对的两侧都设置有连接件60，为了起到更好地高压隔离作用，凹槽4111的相对两侧均设置有第一隔离结构43，不论是否设置有横向肋条432，均可设置至少一条纵向肋条431延伸至凹槽4111处，在第二面412形成凸包时，纵向肋条431可以延伸至凸包，以进一步防止纵向肋条431变形，进而保证高压隔离效果。值得说明的是，凸包还能够隔离位于凹槽4111相对两侧的连接件60之间的高压干扰。
进一步地，绝缘件40还包括第二隔离结构44，第二隔离结构44连接 于第二面412的边缘，第二隔离结构44自第二面412的边缘向远离本体41的方向延伸。当绝缘件40安装于壳体10时，第二隔离结构44设置于本体41靠近电池单体30的一面，且位于电池单体30与壳体10之间，即在电池单体30的顶部处，第二隔离结构44将电池单体30与壳体10的侧壁之间隔离开，以隔绝壳体10与电池单体30之间的高压信号，提高电池模组的安全性。
具体地，第二隔离结构44可以沿第二面412的边缘周向设置，一种实施例中，第二隔离结构44不是闭合的环形结构，即第二隔离结构44设置有缺口，以防止绝缘件40与其它部件发生干涉。
第二隔离结构44可以由本体41沿第二面412的边缘弯折形成，这种结构既能够起到高压隔离的作用，又能够增加绝缘件40的强度。
采样组件50一般为FPC(Flexible Printed Circui，柔性电路板)，基本呈片状结构，且表面比较光滑，在采样组件50安装于电池单体30后，当压紧凸起42压紧采样组件50时，可能会造成采样组件50在其与电池单体30的接触面上发生移动，影响采样组件50的连接精度，因此，本申请的绝缘件40还包括限位凸起45，限位凸起45设置于第二面412，即在绝缘件40安装于壳体10时，限位凸起45设置于本体41靠近电池单体30的一面，且限位凸起45伸出第二面412的尺寸大于压紧凸起42伸出第二面412的尺寸，即限位凸起45的端面较压紧凸起42的端面远离本体41，可以理解地，限位凸起45凸出第二面412，且限位凸起45较压紧凸起42靠近电池单体30，采样组件50与限位凸起45相抵靠，即采样组件50的侧边与限位凸起45相抵靠，采样组件50的主平面与压紧凸起42贴合。采用这种结构，能够限制采样组件50的移动，进而保证采样组件50的安装精度。
由于采样组件50可以为片状结构，因此，为了将其压紧，优选地，压紧凸起42间隔设置有多个，如图4所示，采样组件50呈大致U型结构，压紧凸起42设有四个，四个压紧凸起42分别压紧于U型结构的两条边上。
可以理解地，上述各实施例中，绝缘件40优选为一体式结构，可以采用一体注塑成型。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于 本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种电池模组，其特征在于，包括
    壳体；
    上盖，所述上盖具有防爆阀，所述上盖与所述壳体盖合；
    多个电池单体，多个所述电池单体排列于所述壳体内，所述电池单体设置有防爆阀；
    绝缘件，所述绝缘件设置于所述电池单体与所述上盖之间，所述绝缘件包括本体和压紧凸起，所述本体靠近所述上盖的一面设置有凹槽，所述凹槽与所述防爆阀相对设置，所述凹槽上设置有多个通孔，且多个通孔与多个所述电池单体的防爆阀一一相对设置；所述压紧凸起凸出所述本体靠近所述电池单体的一面；
    采样组件，所述采样组件压设于所述电池单体与所述压紧凸起之间。
  2. 根据权利要求1所述的电池模组，其特征在于，所述凹槽包括槽底和槽壁，所述槽壁连接于所述槽底的边缘，且所述槽壁呈闭合的环形结构。
  3. 根据权利要求1所述的电池模组，其特征在于，
    还包括连接件，相邻的所述电池单体通过所述连接件电连接；
    所述绝缘件还包括第一隔离结构，所述第一个隔离结构设置于所述本体靠近所述电池单体的一面；相邻的所述连接件之间设置有所述第一隔离结构。
  4. 根据权利要求3所述的电池模组，其特征在于，多个所述通孔排成一列，沿多个所述通孔的排列方向，多个所述第一隔离结构至少排成一列。
  5. 根据权利要求4所述的电池模组，其特征在于，所述第一隔离结构包括沿所述排列方向相对设置的至少两条纵向肋条。
  6. 根据权利要求5所述的电池模组，其特征在于，至少一条所述纵向肋条延伸至所述凹槽处。
  7. 根据权利要求5所述的电池模组，其特征在于，所述第一隔离结构还包括横向肋条，相邻的所述纵向肋条通过所述横向肋条连接。
  8. 根据权利要求1所述的电池模组，其特征在于，所述绝缘件还包括第二隔离结构，所述第二隔离结构位于所述电池单体与所述壳体之间。
  9. 根据权利要求1-8任一项所述的电池模组，其特征在于，
    所述绝缘件还包括限位凸起，所述限位凸起设置于所述本体靠近所述电池单体的一面，且较所述压紧凸起靠近所述电池单体；
    所述采样组件与所述限位凸起相抵靠。
  10. 根据权利要求1-8任一项所述的电池模组，其特征在于，所述压紧凸起间隔设置有多个。
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