WO2023082627A1 - 电池模组及电池包 - Google Patents

电池模组及电池包 Download PDF

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Publication number
WO2023082627A1
WO2023082627A1 PCT/CN2022/098300 CN2022098300W WO2023082627A1 WO 2023082627 A1 WO2023082627 A1 WO 2023082627A1 CN 2022098300 W CN2022098300 W CN 2022098300W WO 2023082627 A1 WO2023082627 A1 WO 2023082627A1
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WO
WIPO (PCT)
Prior art keywords
adhesive
elastic gasket
battery module
adhesive tapes
battery
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PCT/CN2022/098300
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English (en)
French (fr)
Inventor
张健
陈朝海
邓雪峰
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湖北亿纬动力有限公司
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Application filed by 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2023082627A1 publication Critical patent/WO2023082627A1/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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/242—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 against vibrations, collision impact or swelling
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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 application relates to the technical field of batteries, for example, to a battery module and a battery pack.
  • the most common connection method is glue.
  • This method forms a module by gluing multiple independent cells to improve the rigidity of the module and ensure the structural strength of the module or system.
  • the common way of gluing is to glue the battery cells to each other, and then connect the glued multiple battery cells to the load-bearing beam bolts.
  • glue overflow is added to glue overflow.
  • a common solution is to add rubber retaining strips on both sides of the battery cell, and apply glue in the middle of the rubber strips.
  • glue overflow will still occur on the upper and lower parts of the battery cell.
  • the present application provides a battery module and a battery pack.
  • the battery module and the battery pack are simple in structure, easy to produce, low in cost, and can prevent spillage of glue and have good uniformity of the glue layer, thereby improving battery mold quality. Structural strength of packs and battery packs.
  • a battery module comprising:
  • a plurality of electric cores are arranged along the first direction; at least one elastic gasket, an elastic gasket is arranged between two adjacent electric cores, the first surface of each elastic gasket and the second
  • Each of the two sides is provided with an adhesive layer and a plurality of adhesive tapes, and the interval rings of the plurality of adhesive tapes are arranged on the elastic gasket, and the connecting lines of the plurality of adhesive tapes form a polygon, so
  • the adhesive layer is located between the plurality of adhesive tapes, and the adhesive layer and the plurality of adhesive tapes are all bonded to a cell located on the same side of the adhesive layer and the plurality of adhesive tapes .
  • the plurality of adhesive tapes disposed on each surface of each elastic gasket are arranged at intervals along the edge of each elastic gasket.
  • the distance between each adhesive tape and the edge of the elastic gasket where each adhesive tape is located is in the range of 1mm-2mm.
  • the adhesive layer and the plurality of adhesive tapes on the first surface of each elastic gasket are connected with the adhesive layer on the second surface of each elastic gasket.
  • the adhesive layer and the plurality of adhesive tapes are arranged symmetrically.
  • each adhesive tape is double-sided.
  • each adhesive tape is provided on each of the first surface and the second surface of each elastic gasket, and the four adhesive tapes are arranged at intervals on each Elastic gasket.
  • each elastic spacer is rectangular, and the four adhesive strips are arranged on four edges of each elastic spacer in one-to-one correspondence.
  • the difference between the length of each elastic gasket and the length of each battery cell is not less than 5mm, and the difference between the width of each elastic gasket and the width of each battery cell is not less than 5mm .
  • each elastic spacer is made of polypropylene microporous foam material.
  • a battery pack comprising the battery module described in any one of the above technical solutions.
  • Fig. 1 is a partial structural diagram of a battery module provided by an embodiment of the present application under a first viewing angle
  • Fig. 2 is a partial structural diagram of a battery module provided in an embodiment of the present application under a second viewing angle;
  • Fig. 3 is a schematic structural view of the elastic gasket provided in the embodiment of the present application and the adhesive strip and adhesive tape disposed thereon.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • this embodiment provides a battery module, the battery module includes a plurality of battery cells 1 and at least one elastic gasket 2, and the plurality of battery cells 1 are arranged along a first direction, as shown in Fig.
  • the direction of the arrow in 1 indicates the arrangement direction of the battery cells 1.
  • An elastic gasket 2 is arranged between two adjacent battery cells 1, and each of the first and second surfaces of each elastic gasket 2 is provided with glue.
  • the plurality of adhesive tapes 3 are arranged at intervals on each of the elastic gaskets 2, the lines of the plurality of adhesive tapes 3 form a polygon, and the adhesive layer is located between the plurality of adhesive tapes 3 In between, the adhesive layer and a plurality of adhesive tapes 3 are bonded to the battery cell 1 .
  • the adhesive layer and the plurality of adhesive tapes 3 are bonded to the battery cell 1, so that a plurality of battery cells 1 are connected and fixed to each other to form a battery module, which is not only simple in structure, easy to produce, and low in cost.
  • the elastic spacer 2 provides a cushioning effect between the battery cells 1 and improves the structural strength of the battery module.
  • the adhesive tape 3 is arranged along the edge of the elastic gasket 2 to increase the amount of glue applied, so that every two adjacent battery cells 1 are firmly connected and avoid large gaps.
  • the elastic gasket 2 is made of polypropylene microporous foam material, such as polypropylene (PP) as the base material, which is formed by forming a large number of micron-sized bubbles in its body through clean supercritical carbon dioxide technology. Porous foam material, the range of expansion ratio is 25-30 times.
  • the stress of the elastic gasket 2 in this embodiment is within a certain strain range, and the stress does not change with the amount of deformation, or the stress changes little.
  • the shear strength of the elastic gasket 2 is greater than or equal to 1.0Mpa. The higher shear strength of the elastic gasket 2 makes its practicability and deformation resistance better, thereby improving the stability of the battery module.
  • the adhesive tape 3 is double-sided tape. Just stick one end of the double-sided adhesive along the edge of the first side of the elastic gasket 2 at intervals to realize the fixation of the adhesive tape 3, which is simple and convenient, and the bonding is firm; the other end of the double-sided adhesive can be bonded to the electric Core 1, and the second side of the elastic gasket 2 is also provided with double-sided adhesive tape, through the double-sided adhesive tape on both sides of the elastic gasket 2, two adjacent battery cells 1 are bonded to realize the connection between two adjacent battery cells 1 Fixed connection. A plurality of battery cells 1 are fixedly connected through the above-mentioned structure to form a battery module, which is not only firmly connected, but also has easy-to-obtain materials and is easy to operate.
  • the double-sided adhesive can have a certain thickness, and the thick double-sided adhesive can better block the adhesive layer between multiple double-sided adhesives, avoiding the overflow of the adhesive layer, so that the glue can be applied in an appropriate amount.
  • the thick double-sided adhesive can provide cushioning performance, can absorb the deviation of the thickness of the battery cell 1, and reduce the influence of the flatness of the battery cell 1 on the uniformity of glue application.
  • the thickness of the double-sided adhesive can be designed according to the required amount of glue and the required cushioning.
  • the gap between the plurality of adhesive tapes 3 can be used to determine whether the glue is evenly pressed and whether the amount of glue applied is appropriate.
  • the specific sizing amount and sizing method can be designed according to actual conditions.
  • the adhesive layer and the plurality of adhesive strips 3 on the first surface of each elastic gasket 2 are symmetrical to the adhesive layer and the plurality of adhesive strips 3 on the second surface of each elastic gasket 2 It is set so that the two adjacent battery cells 1 connected by the elastic gasket 2 are firmly bonded and connected evenly, so that the entire battery module is regular and firm.
  • the shape and size of the elastic gasket 2 is consistent with the shape and size of the battery cell 1, which can improve the stability and firmness of the connection between the battery cells 1, thereby improving the stability and firmness of the battery module.
  • the battery cell 1 is a square shell battery cell, and four adhesive tapes 3 are provided on one side of the elastic gasket 2 , and the four adhesive tapes 3 are arranged on the edge of the elastic gasket 2 at intervals.
  • the elastic gasket 2 is rectangular, and the four adhesive tapes 3 are arranged on four edges of the elastic gasket 2 in one-to-one correspondence.
  • An adhesive tape 3 is attached to each of the four edges of the elastic gasket 2, so that the glue can only overflow from the four corners of the elastic gasket 2, which can well block the overflow of the glue, and is convenient for cleaning and convenient Evaluation of Sizing Quantity Effectiveness.
  • the shape of the elastic gasket 2 and the number of adhesive tapes 3 can be set according to actual needs, and the shape enclosed by the lines of the adhesive tape 3 is set according to the shape of the elastic gasket 2 .
  • each adhesive tape 3 and the edge of the elastic gasket 2 corresponding to each adhesive tape 3 ranges from 1 mm to 2 mm.
  • the adhesive tape 3 is not completely aligned with the edge of the elastic gasket 2, so that when the adhesive tape 3 is squeezed, its edge exceeds the edge of the battery cell 1 and the edge of the elastic gasket 2, affecting other parts of the battery module, and even cause stickiness etc.
  • both the length and width of the elastic gasket 2 are smaller than the length and width of the battery cell 1 .
  • the difference between the length of the elastic spacer 2 and the length of the cell 1 is not less than 5 mm
  • the difference between the width of the elastic spacer 2 and the width of the cell 1 is not less than 5 mm.
  • the elastic gasket 2 is not completely aligned with the edge of the battery cell 1, which prevents the edge of the elastic gasket 2 from exceeding the edge of the battery cell 1 when it is squeezed, affecting other components of the battery module, or even causing sticking.
  • the elastic spacer 2 has good compressibility, and can be extended around with a little force.
  • the size of the elastic spacer 2 is smaller than the size of the battery cell.
  • the gap between the multiple battery cells 1 When multiple battery cells 1 form a battery module, the gap between the multiple battery cells 1 The stretching of the elastic gasket 2 under pressure can just coincide with the cell 1 , which can avoid redundant elastic gaskets 2 protruding between the cells 1 and avoid obvious gaps between the cells 1 .
  • a plurality of battery cells 1 are glued together through the above-mentioned plurality of adhesive tapes 3 and adhesive layers arranged on each of the first and second surfaces of the elastic gasket 2, which improves the rigidity of the battery module. , to ensure the structural strength of the battery module and system.
  • the battery cells 1 located at both ends can be glued to the battery module casing through elastic gaskets 2 with adhesive tapes 3 and glue layers on both sides, or can be connected to the battery module casing through bolts. It is not limited here.
  • This embodiment also provides a battery pack, which includes the above-mentioned battery module.
  • the battery pack composed of the above battery modules is easy to produce and has low cost. At the same time, the overall connection of the battery pack is stable, the anti-seismic performance is good, the structural strength is high, and the electrical performance is also good.
  • the invention provides a battery module and a battery pack.
  • the battery module includes a plurality of batteries and at least one elastic gasket.
  • an elastic gasket By arranging an elastic gasket between two adjacent electric cores, and setting an adhesive layer and a plurality of adhesive tapes on each of the first and second surfaces of each elastic gasket, the adhesive layer and the adhesive The tapes are all bonded to one battery cell on the same side of the adhesive layer and the plurality of adhesive tapes, so that multiple battery cells are connected and fixed to form a battery module, which is not only simple in structure, easy to produce, and low in cost, but also
  • the elastic gasket provides a cushioning effect between the cells and improves the structural strength of the battery module.
  • the adhesive layer is arranged between the plurality of adhesive tapes, effectively avoiding the friction of the adhesive layer. overflow, and can improve the distribution uniformity of the adhesive layer on the elastic gasket; multiple adhesive tapes are set at intervals, so that when the adhesive layer is set, the amount of glue can be judged from the interval between the adhesive tapes and the overflowing glue can be easily removed. , so as to improve the uniformity of the adhesive layer setting.
  • the battery module and the battery pack have higher structural strength and higher safety.

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

Abstract

本申请公开一种电池模组及电池包。该电池模组包括多个电芯和至少一个弹性垫片。所述多个电芯沿第一方向排列设置，相邻两个电芯之间设置有一个弹性垫片，每个弹性垫片的第一面和第二面中的每面设置有胶层和多个胶粘带，所述多个胶粘带间隔设置于所述弹性垫片，所述多个胶粘带的连线围成多边形，所述胶层位于所述多个胶粘带之间，所述胶层和所述多个胶粘带均与位于所述胶层和所述多个胶粘带的同一侧的一个电芯粘接。该电池包包括上述的电池模组。

Description

电池模组及电池包
本申请要求在2021年11月15日提交中国专利局、申请号为202122787019.3的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，例如涉及一种电池模组及电池包。
背景技术
在电芯组成模组时，最常见的连接方式为胶粘，该方式通过胶连多个独立的电芯形成模组来提升模组的刚度，保障模组或者系统的结构强度。常见的胶粘方式为电芯与电芯之间胶粘，然后将胶粘后的多个电芯与承重梁螺栓连接。但是，使用电芯与电芯胶粘的方式需保障有一定的有效胶粘面积，过多的胶量会导致溢胶问题。对此，常见的解决方法是在电芯的两侧增加挡胶条，在胶条中间进行施胶，但实际按照此种方法生产，仍会在电芯上下部发生溢胶。另一种解决方法是将挡胶条做成“回”型，但这会增加加工成本。且由于电芯平面度不完全平整，不管是两侧挡胶还是“回”型挡胶，均无法较大限度提升施胶后的均匀性，胶粘有效面积和性能最终仍受电芯平面度的影响，模组的结构强度无法得到提升。
发明内容
基于以上所述，本申请提供一种电池模组及电池包，所述电池模组及电池包结构简单，易于生产，成本低廉，且可以防溢胶和胶层均匀性较好，提高电池模组和电池包的结构强度。
本申请采用以下技术方案：
一种电池模组，包括：
多个电芯，所述多个电芯沿第一方向排列设置；至少一个弹性垫片，相邻两个电芯之间设置有一个弹性垫片，每个弹性垫片的第一面和第二面中的每面设置有胶层和多个胶粘带，所述多个胶粘带间隔环设于所述弹性垫片，且所述多个胶粘带的连线围成多边形，所述胶层位于所述多个胶粘带之间，所述胶层和所述多个胶粘带均与位于所述胶层和所述多个胶粘带的同一侧的一个电芯粘接。
作为一种电池模组的可选方案，设置于每个弹性垫片的每面上的所述多个胶粘带沿所述每个弹性垫片的边缘间隔设置。
作为一种电池模组的可选方案，每个胶粘带与所述每个胶粘带所在的弹性垫片的边缘的间距范围为1mm-2mm。
作为一种电池模组的可选方案，每个弹性垫片的第一面上的所述胶层和所述多个胶粘带与所述每个弹性垫片的第二面上的所述胶层和所述多个胶粘带对称设置。
作为一种电池模组的可选方案，每个胶粘带为双面胶。
作为一种电池模组的可选方案，每个弹性垫片的第一面和第二面中的每一面设置有四个胶粘带，所述四个胶粘带间隔设置于所述每个弹性垫片。
作为一种电池模组的可选方案，每个弹性垫片呈矩形，所述四个胶粘带分别一一对应设置于所述每个弹性垫片的四个边缘。
作为一种电池模组的可选方案，每个弹性垫片的长度与每个电芯的长度差值不小于5mm，每个弹性垫片的宽度与每个电芯的宽度差值不小于5mm。
作为一种电池模组的可选方案，每个弹性垫片由聚丙烯微孔发泡材料制成。
一种电池包，包括上述任一技术方案所述的电池模组。
附图说明
下面将对本申请实施例描述中所需要使用的附图作简单的介绍。
图1是本申请实施例提供的在第一视角下的电池模组的部分结构示意图；
图2是本申请实施例提供的在第二视角下的电池模组的部分结构示意图；
图3是本申请实施例提供的弹性垫片以及设置于其上的胶条和胶粘带的结构示意图。
图中：1、电芯；2、弹性垫片；3、胶粘带；4、胶条。
具体实施方式
下面结合附图和实施例对本申请作说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以视具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
如图1至图3所示，本实施例提供一种电池模组，该电池模组包括多个电芯1和至少一个弹性垫片2，多个电芯1沿第一方向排列设置，图1中箭头方向表示电芯1的排列方向，相邻两个电芯1之间设置有一个弹性垫片2，每个弹性垫片2的第一面和第二面中的每面设置有胶层和多个胶粘带3，多个胶粘带3间隔设置于所述每个弹性垫片2，多个胶粘带3的连线围成多边形，胶层位于多个胶粘带3之间，胶层和多个胶粘带3均与电芯1粘接。通过在每两个电芯1之间设置一个弹性垫片2，并在弹性垫片2的第一面和第二面中的每面设置胶层和多个胶粘带3，胶层和多个胶粘带3均与电芯1粘接，使得多个电芯1互相连接固定形成电池模组，不仅结构简单，易于生产，成本低廉。且弹性垫片2提供了电芯1之间的缓震作用，提高了电池模组的结构强度。同时，通过将多个胶粘带3间隔设置在弹性垫片2上，并将胶层设置于多个胶粘带3之间，有效地避免了胶层的溢出，且能够提高胶层在弹性垫片2上的分布均匀性；多个胶粘带3间隔环设，使得设置胶层时能够从间隔的多个胶粘带3之间判断施胶量以及便于去掉溢出的胶，从而提高胶层设置的均匀性。可选地，胶粘带3沿弹性垫片2的边缘设置，提高施胶量，使得每相邻两个电芯1之间连接牢固，避免出现较大的缝隙。
可选地，弹性垫片2采用聚丙烯微孔发泡材料制成，例如采用聚丙烯(Polypropylene，PP)为基材，通过清洁的超临界二氧化碳技术在其体内形成大量微米级气泡而形成的多孔发泡材料，发泡倍数范围为25-30倍。本实施例中的弹性垫片2的应力在一定的应变范围内，应力不随变形量而变化，或者应力变化较小。示例性地，弹性垫片2的剪切强度大于等于1.0Mpa。弹性垫片2剪切强度较大使得其实用性和抗变形性能较好，从而提高电池模组的稳定性。
可选地，胶粘带3为双面胶。只需将双面胶的一端沿弹性垫片2的第一面的边缘间隔贴设即可实现胶粘带3的固定，简单方便，且粘接牢固；双面胶的另一端可以粘接电芯1，且弹性垫片2的第二面也设置有双面胶，通过弹性垫片2两面的双面胶粘接相邻两个电芯1，实现相邻两个电芯1之间的固定连接。多个电芯1之间均通过上述结构固定连接，组成电池模组，不仅连接牢固，材料易得，且操作简便。可选地，双面胶可以具有一定的厚度，具有厚度的双面胶能够更好地阻挡多个双面胶之间的胶层，避免胶层溢出，使得施胶能够适量。具有厚度的双面胶可以提供缓震性能，可以吸收电芯1厚度的偏差，降低电芯1平面度对施胶均匀性的影响。在其它实施例中，双面胶的厚度可以根据所需施胶量和所需缓震情况设计。
如图3所示，本实施例中，在将多个胶粘带3贴设在弹性垫片2上后，在弹性垫片2的第一面和第二面中每面施胶以形成胶层。为使得胶层分布均匀，在施胶时，挤出三条平行的胶条4在弹性垫片2上，且中间胶条4的长度最长。施胶完成后，将电芯1与设置有胶粘带3和胶层的弹性垫片2贴合压紧，在压紧过程中，胶条4逐渐铺平并向周围扩展，最终在挤压作用下均匀分布于电芯1和弹性垫片2之间。在此过程中，由于多个胶粘带3的阻挡作用，避免了胶的溢出，且通过多个胶粘带3之间的间隙可以判断胶是否压均，以及施胶量是否得当。在其它实施例中，具体施胶量和施胶方式可以根据实际情况设计。
可选地，每个弹性垫片2的第一面上的胶层和多个胶粘带3与所述每个弹性垫片2的第二面上的胶层和多个胶粘带3对称设置，使得通过弹性垫片2连接的相邻两个电芯1粘接牢固，且连接平整，从而使得整个电池模组规整牢固。
弹性垫片2的形状尺寸与电芯1的形状尺寸一致，可以提高电芯1之间的连接稳定性和牢固性，从而提高电池模组的稳定性和牢固性。本实施例中，电芯1为方壳电芯，弹性垫片2的一面设置有四个胶粘带3，四个胶粘带3间隔环设于弹性垫片2的边缘。可选的，弹性垫片2呈矩形，四个胶粘带3分别一一对应设置于弹性垫片2的四个边缘。弹性垫片2的四个边缘中每个边缘贴设一个胶粘带3，使得胶只能从弹性垫片2的四个角处溢出，能够很好地阻挡胶的溢出，且便于清理以及便于施胶量有效性的评估。在其它实施例中，弹性垫片2的形状和胶粘带3的数量均可以根据实际需求设置，胶粘带3的连线围成的形状根据弹性垫片2的形状设置。
可选地，每个胶粘带3与所述每个胶粘带3对应的弹性垫片2的边缘之间的间距范围为1mm-2mm。胶粘带3不完全与弹性垫片2边缘对齐，避免了胶粘带3受挤压时其边缘超出电芯1的边缘和弹性垫片2的边缘，影响电池模组的其它零部件，甚至造成粘黏等。
可选地，弹性垫片2的长度和宽度均小于电芯1的长度和宽度。本实施例中，弹性垫片2的长度与电芯1的长度差值不小于5mm，弹性垫片2的宽度与电芯1的宽度差值不小于5mm。弹性垫片2不完全与电芯1边缘对齐，避免了弹性垫片2受挤压时其边缘超出电芯1的边缘，影响电池模组的其它零部件，甚至造成粘黏等。弹性垫片2具有很好的压缩性，稍施加力即可朝四周延展，弹性垫片2尺寸小于电芯尺寸，在多个电芯1组成电池模组时，多个电芯1之间的弹性垫片2受压延展能够正好与电芯1重合，既能够避免多个电芯1之间伸出多余的弹性垫片2，也能够避免多个电芯1之间出现明显的空隙。
本实施例中，多个电芯1通过上述设置在弹性垫片2的第一面和第二面中每面的多个胶粘带3和胶层实现胶连，提高了电池模组的刚度，保障了电池模组和系统的结构强度。其中，位于两端的电芯1可以通过两面设置有粘胶带3和胶层的弹性垫片2实现与电池模组壳体的胶连，也可以通过螺栓实现与电池模组壳体的连接。在此不做限定。
本实施例还提供一种电池包，该电池包包括上述的电池模组。由上述电池模组组成的电池包，易于生产制得，且成本较低。同时，该电池包整体连接稳固，抗震性能较好，结构强度较高，从而电学性能也较好。
本发明提供一种电池模组和电池包，该电池模组包括多个电芯和至少一个弹性垫片。通过在相邻两个电芯之间设置一个弹性垫片，并在每个弹性垫片的第一面和第二面中的每面设置胶层和多个胶粘带，胶层和胶粘带均与位于所述胶层和所述多个胶粘带的同一侧的一个电芯粘接，使得多个电芯互相连接固定形成电池模组，不仅结构简单，易于生产，成本低廉，且弹性垫片提供了电芯之间的缓震作用，提高电池模组的结构强度。同时，通过将多个胶粘带间隔设置在弹性垫片上，并多个胶粘带的连线围成多边形，将胶层设置于多个胶粘带之间，有效地避免了胶层的溢出，且能够提高胶层在弹性垫片上的分布均匀性；多个胶粘带间隔环设，使得设置胶层时能够从间隔的胶粘带之间判断施胶量以及便于去掉溢出的胶，从而提高胶层设置的均匀性。在上述结构下，电池模组和电池包的结构强度较大，安全性较高。

Claims (10)

  1. 一种电池模组，包括：
    多个电芯(1)，所述多个电芯(1)沿第一方向排列设置；
    至少一个弹性垫片(2)，相邻两个电芯(1)之间设置有一个弹性垫片(2)，每个弹性垫片(2)的第一面和第二面中的每面设置有胶层和多个胶粘带(3)，所述多个胶粘带(3)间隔设置于所述弹性垫片(2)，且所述多个胶粘带(3)的连线围成多边形，所述胶层位于所述多个胶粘带(3)之间，所述胶层和所述多个胶粘带(3)均与位于所述胶层和所述多个胶粘带(3)的同一侧的一个电芯(1)粘接。
  2. 根据权利要求1所述的电池模组，其中，设置于每个弹性垫片(2)的每面上的所述多个胶粘带(3)沿所述每个弹性垫片(2)的边缘间隔设置。
  3. 根据权利要求2所述的电池模组，其中，每个胶粘带(3)与所述每个胶粘带(3)所在的弹性垫片(2)的边缘的间距范围为1mm-2mm。
  4. 根据权利要求1所述的电池模组，其中，每个弹性垫片(2)的第一面上的所述胶层和所述多个胶粘带(3)与所述每个弹性垫片(2)的第二面上的所述胶层和所述多个胶粘带(3)对称设置。
  5. 根据权利要求1所述的电池模组，其中，每个胶粘带(3)为双面胶。
  6. 根据权利要求1所述的电池模组，其中，每个弹性垫片(2)的第一面和第二面中的每一面设置有四个胶粘带(3)，所述四个胶粘带(3)间隔设置于所述每个弹性垫片(2)。
  7. 根据权利要求6所述的电池模组，其中，每个弹性垫片(2)呈矩形，所述四个胶粘带(3)分别一一对应设置于所述每个弹性垫片(2)的四个边缘。
  8. 根据权利要求1所述的电池模组，其中，每个弹性垫片(2)的尺寸小于每个电芯(1)的尺寸，每个弹性垫片(2)的长度与每个电芯(1)的长度差 值不小于5mm，每个弹性垫片(2)的宽度与每个电芯(1)的宽度差值不小于5mm。
  9. 根据权利要求1所述的电池模组，其中，每个弹性垫片(2)由聚丙烯微孔发泡材料制成。
  10. 一种电池包，包括权利要求1-9任一项所述的电池模组。
PCT/CN2022/098300 2021-11-15 2022-06-13 电池模组及电池包 WO2023082627A1 (zh)

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