CN218957870U - Batteries and battery devices - Google Patents

Batteries and battery devices Download PDF

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CN218957870U
CN218957870U CN202223132050.4U CN202223132050U CN218957870U CN 218957870 U CN218957870 U CN 218957870U CN 202223132050 U CN202223132050 U CN 202223132050U CN 218957870 U CN218957870 U CN 218957870U
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battery
cover plate
roughness
shell
connection
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孙倩倩
齐彬伟
王亚威
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China Innovation Aviation Technology Group Co ltd
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China Lithium Battery Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The battery comprises a battery shell, wherein the battery shell comprises a first cover plate and a shell piece, one end of the shell piece is provided with an opening, the first cover plate is connected with the opening of the shell piece, a first connecting area is arranged on the outer side face of the shell piece and is positioned at one end, close to the first cover plate, of the shell piece, a second connecting area is arranged on one surface, far away from the shell main body, of the first cover plate, and the second connecting area is close to the edge of the first cover plate; the roughness of the second connection region is larger than that of the first connection region, and the difference between the roughness of the second connection region and that of the first connection region is larger than 0 and smaller than or equal to 6 mu m. And the stability of the connection of the battery shell is improved.

Description

电池及电池装置Batteries and battery devices

技术领域technical field

本公开涉及电池技术领域,具体而言,涉及一种电池及电池装置。The present disclosure relates to the technical field of batteries, in particular, to a battery and a battery device.

背景技术Background technique

随着技术的发展和进步,电动车辆的应用日益广泛,在电动车辆中往往设置有电池装置,电池装置用于向电动车辆提供动力。电池装置中设置有电池,电池包括电池壳体和电芯,电池壳体内设置有容置空间,电芯设于容置空间内,通过电池壳体对电芯等器件进行保护。电池壳体可以包括壳体件和盖板,壳体件和盖板焊接,相关技术中壳体件和盖板的焊接容易失效。With the development and progress of technology, the application of electric vehicles is becoming more and more extensive. The electric vehicles are often provided with battery devices, which are used to provide power for the electric vehicles. The battery device is provided with a battery, and the battery includes a battery casing and a battery cell. The battery casing is provided with a storage space, and the battery cell is arranged in the storage space, and the battery cell and other devices are protected by the battery casing. The battery case may include a case part and a cover plate, and the case part and the cover plate are welded. In the related art, the welding between the case part and the cover plate is prone to failure.

需要说明的是,在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解,因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

发明内容Contents of the invention

本公开的目的在于提供一种电池及电池装置,进而至少一定程度上提升电池壳体连接的稳定性。The purpose of the present disclosure is to provide a battery and a battery device, thereby improving the stability of the connection of the battery casing at least to a certain extent.

根据本公开的一个方面,提供一种电池,其特征在于,所述电池包括:According to one aspect of the present disclosure, a battery is provided, wherein the battery includes:

电池壳体,所述电池壳体包括第一盖板和壳体件,所述壳体件的至少一端具有开口,所述第一盖板焊接于所述壳体件的开口,所述壳体件的外侧面设置有第一连接区,所述第一连接区位于所述壳体件靠近所述第一盖板的一端,所述第一盖板远离所述壳主体的一面设置有第二连接区,并且所述第二连接区靠近所述第一盖板的边缘;A battery case, the battery case includes a first cover plate and a case part, at least one end of the case part has an opening, the first cover plate is welded to the opening of the case part, and the case part The outer surface of the part is provided with a first connection area, the first connection area is located at the end of the shell part close to the first cover, and the side of the first cover away from the shell body is provided with a second a connection area, and the second connection area is close to the edge of the first cover plate;

其中,所述第一盖板中至少所述第二连接区的粗糙度大于所述第一连接区的粗糙度,并且所述第二连接区的粗糙度和所述第一连接区的粗糙度差值大于0且小于等于6μm。Wherein, the roughness of at least the second connection area in the first cover plate is greater than the roughness of the first connection area, and the roughness of the second connection area is the same as the roughness of the first connection area The difference is greater than 0 and less than or equal to 6 μm.

本公开实施例提供的电池,包括电池壳体,电池壳体具有第一盖板和壳体件,壳体件的一端设置有开口,第一盖板连接于壳体件的开口,壳体件的外表面设置有第一连接区,第一连接区位于壳体件靠近第一盖板的一端,第一盖板远离壳主体的一面设置有第二连接区,并且第二连接区靠近第一盖板的边缘,第二连接区的粗糙度大于第一连接区的粗糙度,并且第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,通过第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,避免了第一连接区和第二连接区粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体连接的稳定性。The battery provided by the embodiment of the present disclosure includes a battery case, the battery case has a first cover plate and a case part, an opening is provided at one end of the case part, the first cover plate is connected to the opening of the case part, and the case part The outer surface of the outer surface is provided with a first connection area, the first connection area is located at one end of the shell member close to the first cover plate, and a second connection area is provided on the side of the first cover plate away from the shell body, and the second connection area is close to the first On the edge of the cover plate, the roughness of the second connection area is greater than the roughness of the first connection area, and the difference between the roughness of the second connection area and the roughness of the first connection area is greater than 0 and less than or equal to 6 μm, through the second connection The difference between the roughness of the first connection region and the roughness of the first connection region is greater than 0 and less than or equal to 6 μm, which avoids the problem of uneven welding caused by the large difference between the roughness of the first connection region and the second connection region, thereby improving the quality of the battery. Stability of the housing connection.

根据本公开实施例的另一个方面,提供一种电池装置,所述电池装置包括上述的电池。According to another aspect of the embodiments of the present disclosure, there is provided a battery device, the battery device including the above-mentioned battery.

本公开实施例提供的电池装置包括电池,在电池中电池壳体具有第一盖板和壳体件,壳体件的一端设置有开口,第一盖板连接于壳体件的开口,壳体件的外表面设置有第一连接区,第一连接区位于壳体件靠近第一盖板的一端,第一盖板远离壳主体的一面设置有第二连接区,并且第二连接区靠近第一盖板的边缘,第二连接区的粗糙度大于第一连接区的粗糙度,并且第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,通过第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,避免了第一连接区和第二连接区粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体连接的稳定性。The battery device provided by the embodiment of the present disclosure includes a battery. In the battery, the battery case has a first cover plate and a case part. An opening is provided at one end of the case part. The first cover plate is connected to the opening of the case part. The outer surface of the part is provided with a first connection area, the first connection area is located at the end of the shell part close to the first cover plate, the side of the first cover plate away from the shell main body is provided with a second connection area, and the second connection area is close to the first cover plate On the edge of a cover plate, the roughness of the second connection area is greater than the roughness of the first connection area, and the difference between the roughness of the second connection area and the roughness of the first connection area is greater than 0 and less than or equal to 6 μm, through the second The difference between the roughness of the connection area and the roughness of the first connection area is greater than 0 and less than or equal to 6 μm, which avoids the problem of uneven welding caused by excessive roughness differences between the first connection area and the second connection area, thereby improving The stability of the battery case connection.

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和解释性的,并不能限制本公开。It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

附图说明Description of drawings

此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

图1为本公开示例性实施例提供的一种电池的结构示意图;FIG. 1 is a schematic structural diagram of a battery provided by an exemplary embodiment of the present disclosure;

图2为本公开示例性实施例提供的一种电池的剖视示意图;Fig. 2 is a schematic cross-sectional view of a battery provided by an exemplary embodiment of the present disclosure;

图3为本公开示例性实施例提供的一种电池装置的结构示意图。Fig. 3 is a schematic structural diagram of a battery device provided by an exemplary embodiment of the present disclosure.

具体实施方式Detailed ways

下面将结合本公开示例实施例中的附图,对本公开示例实施例中的技术方案进行清楚、完整的描述。本文中的描述的示例实施例仅仅是用于说明的目的,而并非用于限制本公开的保护范围,因此应当理解,在不脱离本公开的保护范围的情况下,可以对示例实施例进行各种修改和改变。The following will clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are for illustrative purposes only, and are not intended to limit the protection scope of the present disclosure, so it should be understood that various modifications can be made to the exemplary embodiments without departing from the protection scope of the present disclosure. modifications and changes.

在本公开的描述中,除非另有明确的规定和限定,术语“第一”、“第二”仅用于描述的目的,而不能理解为指示或暗示相对重要性;术语“多个”是指两个或两个以上;术语“和/或”包括一个或多个相关联列出项目的任何组合和所有组合。特别地,提到“该/所述”对象或“一个”对象同样旨在表示可能的多个此类对象中的一个。In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "plurality" is means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the" or "an" are likewise intended to mean one of a possible plurality of such objects.

除非另有规定或说明,术语“连接”、“固定”等均应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或一体地连接,或电连接,或信号连接;“连接”可以是直接相连,也可以通过中间媒介间接相连。对于本领域的技术人员而言,可以根据具体情况理解上述术语在本公开中的具体含义。Unless otherwise specified or explained, the terms "connected" and "fixed" should be interpreted in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or integral connection, or electrical connection, or Connection; "connection" can be a direct connection or an indirect connection through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

进一步地,本公开的描述中,需要理解的是,本公开的示例实施例中所描述的“上”、“下”、“内”、“外”等方位词是以附图所示的角度来进行描述的,不应理解为对本公开的示例实施例的限定。还需要理解的是,在上下文中,当提到一个元件或特征连接在另外元件(一个或多个)“上”、“下”、或者“内”、“外”时,其不仅能够直接连接在另外(一个或多个)元件“上”、“下”或者“内”、“外”,也可以通过中间元件间接连接在另外(一个或多个)元件“上”、“下”或者“内”、“外”。Furthermore, in the description of the present disclosure, it should be understood that the orientation words such as "upper", "lower", "inner" and "outer" described in the exemplary embodiments of the present disclosure are based on the angles shown in the drawings It should not be construed as limiting the example embodiments of the present disclosure. It also needs to be understood that in this context, when an element or feature is referred to as being "on," "under," or "inside" or "outside" another element(s), it is not only a direct connection In other (one or more) elements "on", "under" or "inside", "outside", it can also be indirectly connected to another (one or more) elements "on", "under" or "outside" through intermediate elements inside and outside".

本公开示例性实施例首先提供一种电池100,如图1所述,电池100包括电池壳体10,电池壳体10包括第一盖板12和壳体件11,壳体件11的至少一端具有开口,第一盖板12焊接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘;其中,第二连接区102的粗糙度大于第一连接区101的粗糙度,第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm。The exemplary embodiment of the present disclosure firstly provides a battery 100. As shown in FIG. There is an opening, the first cover plate 12 is welded to the opening of the shell member 11, and the outer surface of the shell member 11 is provided with a first connecting area 101, and the first connecting area 101 is located at one end of the shell member 11 close to the first cover plate 12 , the side of the first cover plate 12 away from the shell body 111 is provided with a second connection area 102, and the second connection area 102 is close to the edge of the first cover plate 12; wherein, the roughness of the second connection area 102 is greater than that of the first connection area The roughness of 101, the difference between the roughness of the second connection region 102 and the roughness of the first connection region 101 is greater than 0 and less than or equal to 6 μm.

本公开实施例提供的电池,包括电池壳体10,电池壳体10具有第一盖板12和壳体件11,壳体件11的一端设置有开口,第一盖板12连接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘,第二连接区102的粗糙度大于第一连接区101的粗糙度,第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,通过第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,避免了第一连接区101和第二连接区102粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体10连接的稳定性,并且将第二连接区102的粗糙度设置为大于第一连接区101的粗糙度,使得电池在粘接于箱体300内时,提升第一盖板12和箱体300的粘接强度,从而提升电池装置的连接稳定性。The battery provided by the embodiment of the present disclosure includes a battery case 10, the battery case 10 has a first cover plate 12 and a case part 11, an opening is provided at one end of the case part 11, and the first cover plate 12 is connected to the case part 11, the outer surface of the housing part 11 is provided with a first connecting area 101, the first connecting area 101 is located at the end of the housing part 11 close to the first cover plate 12, and the first cover plate 12 is set on the side away from the shell main body 111 There is a second connection area 102, and the second connection area 102 is close to the edge of the first cover plate 12, the roughness of the second connection area 102 is greater than the roughness of the first connection area 101, and the roughness of the second connection area 102 and the first The roughness difference of the first connection region 101 is greater than 0 and less than or equal to 6 μm, and the difference between the roughness of the second connection region 102 and the roughness of the first connection region 101 is greater than 0 and less than or equal to 6 μm, avoiding the first connection region 101 The problem of uneven welding caused by excessive roughness difference with the second connection area 102, thereby improving the stability of the connection of the battery case 10, and setting the roughness of the second connection area 102 to be greater than that of the first connection area 101 roughness, so that when the battery is bonded in the box body 300, the bonding strength between the first cover plate 12 and the box body 300 is improved, thereby improving the connection stability of the battery device.

下面将对本公开实施例提供的电池的各部分进行详细说明:Each part of the battery provided by the embodiments of the present disclosure will be described in detail below:

如图2所示,电池可以包括电池壳体10、电芯20和极柱30,电芯20设于电池壳体10内部,极柱30设于电池壳体10,并且极柱30和电芯20电连接。在本公开实施例中,电池壳体10和极柱30可以分别为电池的两个电极,电芯20分别电连接电池壳体10和极柱30。As shown in Figure 2, the battery can include a battery case 10, a cell 20 and a pole 30, the cell 20 is arranged inside the battery case 10, the pole 30 is arranged in the battery case 10, and the pole 30 and the cell 20 electrical connections. In the embodiment of the present disclosure, the battery case 10 and the pole 30 may be two electrodes of the battery respectively, and the battery cell 20 is electrically connected to the battery case 10 and the pole 30 respectively.

电池壳体10可以包括壳体件11和第一盖板12,壳体件11上设置有开口,第一盖板12连接于壳体件11上的开口,以封堵壳体件11上的开口。壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘;第二连接区102的粗糙度大于第一连接区101的粗糙度。The battery case 10 may include a case part 11 and a first cover plate 12, the case part 11 is provided with an opening, and the first cover plate 12 is connected to the opening on the case part 11 to block the opening on the case part 11. Open your mouth. The outer surface of the housing member 11 is provided with a first connecting area 101, the first connecting area 101 is located at one end of the housing member 11 close to the first cover plate 12, and the side of the first cover plate 12 away from the shell main body 111 is provided with a second connection area. area 102 , and the second connection area 102 is close to the edge of the first cover plate 12 ; the roughness of the second connection area 102 is greater than the roughness of the first connection area 101 .

在电池100安装于箱体300内时,电池往往是直接或者间接粘接于箱体300的底板310上。电池粘接时第一盖板12朝向箱体300的底板310,在底板310和第一盖板12之间设置连接胶,通过提高第一盖板12的粗糙度能够提升电池和底板310粘接的稳定性。When the battery 100 is installed in the box body 300 , the battery is often directly or indirectly bonded to the bottom plate 310 of the box body 300 . When the battery is bonded, the first cover plate 12 faces the bottom plate 310 of the box body 300, and a connecting glue is provided between the bottom plate 310 and the first cover plate 12. By increasing the roughness of the first cover plate 12, the bonding of the battery and the bottom plate 310 can be improved. stability.

其中,壳体件11包括壳主体111和第二盖板112,壳主体111的两端设置有开口,第一盖板12设于壳主体111的一端;第二盖板112设于壳主体111远离第一盖板12的一端,第二盖板112和壳主体111为一体成型式结构。比如,第二盖板112和壳主体111可以是通过拉伸一体成型。Wherein, the shell member 11 includes a shell main body 111 and a second cover plate 112, openings are arranged at both ends of the shell main body 111, the first cover plate 12 is arranged on one end of the shell main body 111; the second cover plate 112 is arranged on the shell main body 111 At an end away from the first cover 12 , the second cover 112 and the shell main body 111 are integrally formed. For example, the second cover plate 112 and the shell main body 111 may be integrally formed by stretching.

第一盖板12和壳体件11的连接方式可以是焊接,比如,第一盖板12和壳体件11的连接方式可以是激光焊,在焊接时第一连接区101和第二连接区102具有预设的粗糙度能够提升焊接质量,从而提升第一盖板12和壳体件11的密封性和连接强度。The connection mode of the first cover plate 12 and the housing part 11 can be welding, for example, the connection mode of the first cover plate 12 and the housing part 11 can be laser welding, and the first connection area 101 and the second connection area The preset roughness of 102 can improve the welding quality, thereby improving the tightness and connection strength between the first cover plate 12 and the shell part 11 .

进一步的,为了提升第一盖板12和壳体件11的焊接质量,第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm。比如,第一连接区101的粗糙度为a,第二连接区102的粗糙度为b,则0<b-a≤6μm。第一连接区101的粗糙度和第二连接区102的粗糙度的差值大于0且小于等于6,避免了由于第一连接区101和第二连接区102粗糙度差值过大而导致的采用同一激光束焊接时,第一连接区101和第二连接区102反光差异而导致的两面焊接效果差异较大的问题,进而提升焊接质量。Further, in order to improve the welding quality of the first cover plate 12 and the shell part 11 , the difference between the roughness of the second connection area 102 and the roughness of the first connection area 101 is greater than 0 and less than or equal to 6 μm. For example, the roughness of the first connection region 101 is a, and the roughness of the second connection region 102 is b, then 0<b−a≦6 μm. The difference between the roughness of the first connection region 101 and the roughness of the second connection region 102 is greater than 0 and less than or equal to 6, which avoids the roughness caused by the excessive roughness difference between the first connection region 101 and the second connection region 102 When the same laser beam is used for welding, the difference in reflection between the first connection area 101 and the second connection area 102 causes a large difference in the welding effect on both sides, thereby improving the welding quality.

第一盖板12的厚度大于壳体件11的壁厚。第一盖板12的厚度是指第一盖板12在电池轴线方向的尺寸,也即是第一盖板12靠近壳体件11的一面到第一盖板12远离壳体件11的一面的尺寸。壳体件11的壁厚是指壳主体111的壁厚,也即是壳主体111的外表面的半径和壳主体111内表面半径的差值。第一盖板12的厚度大于壳体件11的壁厚,能够提升第一盖板12的支撑效果以及第一盖板12和壳体件11的连接强度。The thickness of the first cover plate 12 is greater than the wall thickness of the housing part 11 . The thickness of the first cover plate 12 refers to the size of the first cover plate 12 in the direction of the battery axis, that is, the distance from the side of the first cover plate 12 close to the case member 11 to the side of the first cover plate 12 away from the case part 11 size. The wall thickness of the shell part 11 refers to the wall thickness of the shell body 111 , that is, the difference between the radius of the outer surface of the shell body 111 and the radius of the inner surface of the shell body 111 . The thickness of the first cover plate 12 is greater than the wall thickness of the shell part 11 , which can improve the supporting effect of the first cover plate 12 and the connection strength between the first cover plate 12 and the shell part 11 .

在电池的使用过程中电芯会在电池壳体10中产气,形成高压气体冲击第一盖板12,第一盖板12厚度大于壳体件11能够保证电池壳体10的抗冲击性能。当第一盖板12与壳体件11如果粗糙度差异比较大时,第一盖板12与壳体件11的反光程度差异比较大,而第一盖板又比较厚,容易导致第一盖板12与壳体件11焊接不良,进而导致第一盖板12与壳体件11之间密封失效。因此在本公开实施例中将第二连接区102的粗糙度和第一连接区101的粗糙度差值限定为大于0且小于等于6μm,能够避免焊接不良,提升连接稳定性。During the use of the battery, the battery cells will generate gas in the battery case 10 , forming high-pressure gas that impacts the first cover plate 12 . The thickness of the first cover plate 12 is greater than that of the case member 11 to ensure the impact resistance of the battery case 10 . When the difference in roughness between the first cover plate 12 and the shell member 11 is relatively large, the difference in the degree of light reflection between the first cover plate 12 and the shell member 11 is relatively large, and the first cover plate is relatively thick, which may easily cause the first cover The plate 12 is poorly welded to the shell part 11 , which further leads to failure of the seal between the first cover plate 12 and the shell part 11 . Therefore, in the disclosed embodiment, the difference between the roughness of the second connection region 102 and the roughness of the first connection region 101 is limited to be greater than 0 and less than or equal to 6 μm, which can avoid poor welding and improve connection stability.

其中,防爆阀可以是第一盖板12上的减薄区,比如,在第一盖板12上设置环形减薄区,该环形减薄区围成的区域为防爆区。减薄区的强度小于周边的区域,当电池热失控时该强度弱的区域被冲破电池爆开。第一盖板12的厚度大于壳体件11的壁厚,能够避免加工防爆阀后第一盖板12强度过于低而影响使用。Wherein, the explosion-proof valve may be a thinned area on the first cover plate 12, for example, an annular thinned area is set on the first cover plate 12, and the area surrounded by the annular thinned area is an explosion-proof area. The strength of the thinned area is smaller than that of the surrounding area, and the weak area is broken by the battery when the battery is thermally runaway. The thickness of the first cover plate 12 is greater than the wall thickness of the shell member 11 , which can avoid the influence of the use of the first cover plate 12 after processing the explosion-proof valve because the strength is too low.

第一盖板12和壳体件11通过激光焊接的方式连接,并且第一盖板12和壳体件11焊接时熔池的熔深大于等于0.2w,w为壳体件的壁厚。第一盖板12和壳体件11焊接时熔池的熔深大于等于0.2w,能够保证第一盖板12和壳体件11的焊接可靠性,并且保证壳体件11和第一盖板12的密封性能。The first cover plate 12 and the shell part 11 are connected by laser welding, and the penetration depth of the molten pool is greater than or equal to 0.2w when the first cover plate 12 and the shell part 11 are welded, where w is the wall thickness of the shell part. When the first cover plate 12 and the shell part 11 are welded, the penetration depth of the molten pool is greater than or equal to 0.2w, which can ensure the welding reliability of the first cover plate 12 and the shell part 11, and ensure that the shell part 11 and the first cover plate 12 sealing performance.

可选的,第一盖板12和壳体件11焊接时熔池的熔深等于壳体件11的壁厚。通过第一盖板12和壳体件11焊接时熔池的熔深等于壳体件11的壁厚,能够提升第一盖板12和壳体件11的焊接效果,并保证第一盖板12和壳体件11的密封性能。Optionally, when the first cover plate 12 and the shell part 11 are welded, the penetration depth of the molten pool is equal to the wall thickness of the shell part 11 . When the first cover plate 12 and the shell part 11 are welded, the penetration depth of the molten pool is equal to the wall thickness of the shell part 11, which can improve the welding effect of the first cover plate 12 and the shell part 11, and ensure that the first cover plate 12 And the sealing performance of the housing part 11.

示例的,本公开实施例提供的电池为圆柱电池,在此基础上,电池壳体10为空心柱状结构。第一盖板12为圆盘结构,壳体件11为一端开口的空心圆柱结构。壳体件11包括壳主体111和第二盖板112,第二盖板112为圆盘结构,壳主体111为圆筒结构。Exemplarily, the battery provided in the embodiment of the present disclosure is a cylindrical battery, on this basis, the battery case 10 is a hollow columnar structure. The first cover plate 12 is a disc structure, and the shell member 11 is a hollow cylindrical structure with one end open. The housing part 11 includes a housing main body 111 and a second cover plate 112 , the second cover plate 112 is in the form of a disc, and the housing main body 111 is in the form of a cylinder.

在本公开一可行的实施方式中,第一连接区101布满壳体件11的外侧面,也即是第一连接区101布满壳主体111的外表面,第二连接区102布满第一盖板12远离壳体件11的一面。通过在第一盖板12远离壳体件11的一面布满第二连接区102,使得第一盖板12整个区域与电池箱体300连接稳固。并且第一盖板12整面粗糙度一致有利于第一盖板12的加工,避免第一盖板12需要多次加工。第一连接区101布满壳体件11的外侧面,避免壳体件11外表面需要多次加工成型。In a feasible implementation manner of the present disclosure, the first connection area 101 covers the outer surface of the shell member 11, that is, the first connection area 101 covers the outer surface of the shell body 111, and the second connection area 102 covers the second A cover plate 12 is located away from the side of the housing part 11 . By covering the second connection area 102 on the side of the first cover plate 12 far away from the housing part 11 , the entire area of the first cover plate 12 is firmly connected to the battery case 300 . Moreover, the uniform roughness of the entire surface of the first cover plate 12 is beneficial to the processing of the first cover plate 12 and avoids the need for multiple processing of the first cover plate 12 . The first connecting area 101 covers the outer surface of the shell member 11 , avoiding the need for multiple processing and shaping of the outer surface of the shell member 11 .

在本公开另一可行的实施方式中,第一连接区101可以是壳体件11外侧面上的部分区域,第二连接区102为第一盖板12上远离壳体件11一面上的部分区域。示例的,壳体件11上第一连接区101远离第一盖板12的一侧设置有第一主体区103,第一主体区103的粗糙度大于等于第一连接区101的粗糙度。In another feasible implementation manner of the present disclosure, the first connection area 101 may be a partial area on the outer surface of the shell member 11, and the second connection area 102 is a part on the side of the first cover plate 12 away from the shell member 11. area. For example, a first body region 103 is provided on the side of the first connection region 101 away from the first cover plate 12 on the shell member 11 , and the roughness of the first body region 103 is greater than or equal to the roughness of the first connection region 101 .

第一盖板12还包括第二主体区104,第二主体区104的粗糙度大于等于第二连接区102的粗糙度。优选的,第二主体区104的粗糙度等于第二连接区102的粗糙度。The first cover plate 12 further includes a second body region 104 , the roughness of the second body region 104 is greater than or equal to the roughness of the second connection region 102 . Preferably, the roughness of the second body region 104 is equal to the roughness of the second connection region 102 .

其中,第一连接区101和第一主体区103相接,并且第一连接区101为壳主体111表面上的环形区域,该环形区域设于壳主体111表面靠近第一盖板12的一端,壳主体111外表面其他区域为第一主体区103。第二连接区102和第二主体区104相接,第二连接区102为第一盖板12表面上的圆环区域,第二主体区104为第一盖板12表面上的圆形区域。Wherein, the first connecting area 101 and the first main body area 103 are in contact, and the first connecting area 101 is an annular area on the surface of the shell body 111, and the annular area is set at one end of the shell body 111 surface close to the first cover plate 12, The other area on the outer surface of the shell main body 111 is the first main body area 103 . The second connection area 102 is in contact with the second body area 104 , the second connection area 102 is a ring area on the surface of the first cover 12 , and the second body area 104 is a circular area on the surface of the first cover 12 .

在本公开实施例中,电池壳体10通过不锈钢或者铝合金等材料制成。电池壳体10表面通常比较光滑,当圆柱电池成组或者形成电池包时,多个电池中相邻的电池组件灌胶,通过将第一主体区103的粗糙度设置为大于等于第一连接区101的粗糙度,能够保证电池和胶层连接紧密,提升连接强度。第二主体区104的粗糙度等于第二连接区102的粗糙度,可以通过一次工艺形成第一盖板12,以提升生产效率节约成本。In the embodiment of the present disclosure, the battery case 10 is made of materials such as stainless steel or aluminum alloy. The surface of the battery case 10 is usually relatively smooth. When cylindrical batteries are grouped or formed into a battery pack, the adjacent battery components in multiple batteries are filled with glue. By setting the roughness of the first main body area 103 to be greater than or equal to the first connection area The roughness of 101 can ensure the tight connection between the battery and the adhesive layer and improve the connection strength. The roughness of the second body region 104 is equal to the roughness of the second connection region 102 , and the first cover plate 12 can be formed in one process to improve production efficiency and save costs.

需要说明的是,本公开实施例中以电池为圆柱电池进行说明,在实际应用中电池并不局限于圆柱电池,电池也可以是棱柱电池等。比如,电池可以是六棱柱电池,此时,第一盖板12可以呈六边形板,壳体件11为空心六棱柱结构。It should be noted that, in the embodiments of the present disclosure, the battery is described as a cylindrical battery. In practical applications, the battery is not limited to a cylindrical battery, and the battery may also be a prismatic battery. For example, the battery may be a hexagonal prism battery. In this case, the first cover plate 12 may be a hexagonal plate, and the housing part 11 may be a hollow hexagonal prism structure.

电芯20设于电池壳体10内,电芯20可以包括电芯主体、第一极耳和第二极耳,第一极耳和第二极耳分别和电芯主体连接。第一极耳为电池的正极耳和负极耳中的一个,第二极耳为电池的正极耳和负极耳中的另一个。The battery cell 20 is disposed in the battery case 10, and the battery cell 20 may include a battery cell main body, a first tab and a second tab, and the first tab and the second tab are respectively connected to the main body of the battery cell. The first tab is one of the positive tab and the negative tab of the battery, and the second tab is the other of the positive tab and the negative tab of the battery.

在一实施方式中,电池壳体10为电池的负极,极柱30为电池的正极,正极耳连接于极柱30,负极耳连接于电池壳体10。正极耳和极柱30可以是直接连接(比如,焊接或者铆接),或者正极耳和极柱30可以是间接连接(比如,正极耳和极柱30可以通过集流盘连接)。负极耳和电池壳体10可以是直接连接(比如,焊接或者铆接),或者负极耳和电池壳体10可以是间接连接(比如,负极耳和电池壳体10通过转接件连接)。In one embodiment, the battery case 10 is the negative pole of the battery, the pole 30 is the positive pole of the battery, the positive tab is connected to the pole 30 , and the negative tab is connected to the battery case 10 . The positive tab and the pole 30 may be directly connected (for example, welded or riveted), or the positive tab and the pole 30 may be connected indirectly (for example, the positive tab and the pole 30 may be connected through a current collector). The negative tab and the battery case 10 can be directly connected (for example, welded or riveted), or the negative tab and the battery case 10 can be connected indirectly (for example, the negative tab and the battery case 10 are connected through an adapter).

在一个实施例中,电芯20为卷绕式电芯,不仅成组方便,且可以加工得到长度较长的电池。电芯20具有第一极片与第一极片电性相反的第二极片以及设置在第一极片和第二极片之间的隔膜片,将第一极片、与第一极片电性相反的第二极片以及设置在第一极片和第二极片之间的隔膜片进行卷绕,得到卷绕式电芯。In one embodiment, the battery cell 20 is a winding battery cell, which is not only convenient for grouping, but also can be processed to obtain a battery with a longer length. The electric core 20 has a first pole piece and a second pole piece electrically opposite to the first pole piece, and a diaphragm piece arranged between the first pole piece and the second pole piece, and connects the first pole piece and the first pole piece to each other. The second pole piece with opposite electrical properties and the diaphragm piece arranged between the first pole piece and the second pole piece are wound to obtain a wound electric core.

本公开实施例提供的电池,包括电池壳体10,电池壳体10具有第一盖板12和壳体件11,壳体件11的一端设置有开口,第一盖板12连接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘,第二连接区102的粗糙度大于第一连接区101的粗糙度,并且第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,通过第二连接区的粗糙度和第一连接区的粗糙度差值大于0且小于等于6μm,避免了第一连接区和第二连接区粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体连接的稳定性。The battery provided by the embodiment of the present disclosure includes a battery case 10, the battery case 10 has a first cover plate 12 and a case part 11, an opening is provided at one end of the case part 11, and the first cover plate 12 is connected to the case part 11, the outer surface of the housing part 11 is provided with a first connecting area 101, the first connecting area 101 is located at the end of the housing part 11 close to the first cover plate 12, and the first cover plate 12 is set on the side away from the shell main body 111 There is a second connection area 102, and the second connection area 102 is close to the edge of the first cover plate 12, the roughness of the second connection area 102 is greater than the roughness of the first connection area 101, and the roughness of the second connection area is the same as that of the first cover plate 12. The roughness difference of a connection area is greater than 0 and less than or equal to 6 μm, and the difference between the roughness of the second connection area and the roughness of the first connection area is greater than 0 and less than or equal to 6 μm, avoiding the first connection area and the second connection The problem of uneven welding caused by the large difference in the roughness of the area, thereby improving the stability of the battery case connection.

本公开示例性实施例还提供一种电池装置,如图3所示,电池装置包括上述的电池100。其中,电池包括电池壳体10,电池壳体10包括第一盖板12和壳体件11,壳体件11的一端具有开口,第一盖板12连接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘;其中,第二连接区102的粗糙度大于第一连接区101的粗糙度。Exemplary embodiments of the present disclosure also provide a battery device. As shown in FIG. 3 , the battery device includes the above-mentioned battery 100 . Wherein, the battery includes a battery casing 10, the battery casing 10 includes a first cover plate 12 and a casing part 11, one end of the casing part 11 has an opening, the first cover plate 12 is connected to the opening of the casing part 11, and the casing The outer surface of the part 11 is provided with a first connection area 101, the first connection area 101 is located at the end of the shell part 11 close to the first cover plate 12, and the side of the first cover plate 12 away from the shell main body 111 is provided with a second connection area 102 , and the second connection area 102 is close to the edge of the first cover plate 12 ; wherein, the roughness of the second connection area 102 is greater than the roughness of the first connection area 101 .

本公开实施例提供的电池装置包括电池,在电池中电池壳体10具有第一盖板12和壳体件11,壳体件11的一端设置有开口,第一盖板12连接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘,第二连接区102的粗糙度大于第一连接区101的粗糙度,第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,通过第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,避免了第一连接区101和第二连接区102粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体10连接的稳定性。The battery device provided by the embodiment of the present disclosure includes a battery. In the battery, the battery case 10 has a first cover plate 12 and a case part 11. An opening is provided at one end of the case part 11. The first cover plate 12 is connected to the case part. 11, the outer surface of the housing part 11 is provided with a first connecting area 101, the first connecting area 101 is located at the end of the housing part 11 close to the first cover plate 12, and the first cover plate 12 is set on the side away from the shell main body 111 There is a second connection area 102, and the second connection area 102 is close to the edge of the first cover plate 12, the roughness of the second connection area 102 is greater than the roughness of the first connection area 101, and the roughness of the second connection area 102 and the first The roughness difference of the first connection region 101 is greater than 0 and less than or equal to 6 μm, and the difference between the roughness of the second connection region 102 and the roughness of the first connection region 101 is greater than 0 and less than or equal to 6 μm, avoiding the first connection region 101 The problem of uneven welding caused by excessive roughness difference with the second connection area 102 improves the stability of the connection of the battery case 10 .

本公开实施例提供的电池装置可以是电池模组或者电池包。当电池装置为电池模组时,电池模组中包括多个电池和电池架,多个电池安装于电池架中,比如,多个电池在电池架上呈阵列式分布。The battery device provided in the embodiments of the present disclosure may be a battery module or a battery pack. When the battery device is a battery module, the battery module includes a plurality of batteries and a battery rack, and the plurality of batteries are installed in the battery rack, for example, the plurality of batteries are distributed in an array on the battery rack.

电池设置第一盖板12的一端朝向电池架,并且电池架和电池之间设置有第一胶层201,第一胶层201至少部分和第一盖板12。第二连接区102的粗糙度较大,有利于电池和电池架连接的稳定性。One end of the battery is provided with the first cover plate 12 facing the battery frame, and a first adhesive layer 201 is provided between the battery frame and the battery, the first adhesive layer 201 is at least partially connected to the first cover plate 12 . The roughness of the second connection area 102 is relatively large, which is beneficial to the stability of the connection between the battery and the battery rack.

当电池装置为电池包时,电池装置可以包括多个电池100和箱体300,箱体300内设置有容置空间,电池和电池架设于箱体300内的容置空间内。当然在实际应用中,电池也可以直接设置于箱体300内,比如,电池通过连接胶粘接于箱体300,本公开实施例对此不做具体限定。电池100设于箱体300的支撑板上,并且在支撑板和电池100之间设置有第一胶层201,第一胶层201至少部分和第一盖板12上连接。支撑板可以是箱体的底板,或者支撑板也可以是电池架。When the battery device is a battery pack, the battery device may include a plurality of batteries 100 and a box body 300 , the box body 300 is provided with an accommodating space, and the batteries and the batteries are erected in the accommodating space in the box body 300 . Of course, in practical applications, the battery may also be directly arranged in the box body 300 , for example, the battery is bonded to the box body 300 by connecting glue, which is not specifically limited in this embodiment of the present disclosure. The battery 100 is disposed on the support plate of the box body 300 , and a first adhesive layer 201 is disposed between the support plate and the battery 100 , and the first adhesive layer 201 is at least partially connected to the first cover plate 12 . The support plate can be the bottom plate of the box body, or the support plate can also be a battery rack.

箱体300具有底板310,电池设于底板310,并且电池100和底板310之间设置有第一胶层201,并且电池设置第一盖板12的一端朝向底板310,第一胶层201至少部分和第二连接区102连接。The box body 300 has a bottom plate 310, the battery is arranged on the bottom plate 310, and a first adhesive layer 201 is arranged between the battery 100 and the bottom plate 310, and one end of the first cover plate 12 of the battery is set toward the bottom plate 310, and the first adhesive layer 201 is at least partially It is connected with the second connection area 102.

当电池100通过电池架连接于底板310时,第一胶层201设于电池架和电池的第一盖板12之间。电池100直接连接于底板310时,第一胶层201设于底板310和电池的第一盖板12之间。电池中极柱30可以设于壳体件11远离第一盖板12的一端,也即是电池的极柱30朝上设置,在极柱30的顶部设置有汇流排,通过汇流排实现多个电池的电连接。When the battery 100 is connected to the bottom plate 310 through the battery frame, the first adhesive layer 201 is disposed between the battery frame and the first cover plate 12 of the battery. When the battery 100 is directly connected to the bottom plate 310 , the first adhesive layer 201 is disposed between the bottom plate 310 and the first cover plate 12 of the battery. The pole 30 in the battery can be set at the end of the shell member 11 away from the first cover plate 12, that is, the pole 30 of the battery is set upward, and a bus bar is arranged on the top of the pole 30, and multiple Electrical connection of the battery.

电池装置包括多个电池100,多个电池100之间设置有第二胶层202,第二胶层202至少部分和第一主体区103连接。比如,多个电池100可以呈阵列式分布,多个电池100之间具有间隙,第二胶层202填充于电池的间隙之间。第二胶层202和第一主体区103连接,第一连接区101的粗糙度小于等于第一主体区103的粗糙度,因此第二胶层202和第一主体区103连接,提升了电池之间的连接强度。The battery device includes a plurality of batteries 100 , and a second adhesive layer 202 is disposed between the plurality of batteries 100 , and the second adhesive layer 202 is at least partially connected to the first body region 103 . For example, a plurality of batteries 100 may be distributed in an array, there are gaps between the plurality of batteries 100, and the second adhesive layer 202 is filled in the gaps between the batteries. The second adhesive layer 202 is connected to the first main body region 103, and the roughness of the first connection region 101 is less than or equal to the roughness of the first main body region 103, so the second adhesive layer 202 is connected to the first main body region 103, which improves the battery life. the connection strength between them.

其中,在一些可行的实施方式中电池呈多列分布,相邻的两列电池100之间设置有冷板,冷板和电池100之间设置有第二胶层202,第二胶层202和第一主体区103连接,能够提升电池和冷板之间的粘接力,提升电池装置连接的稳定。Wherein, in some feasible implementation manners, the batteries are distributed in multiple rows, a cold plate is arranged between two adjacent rows of batteries 100, a second adhesive layer 202 is arranged between the cold plate and the battery 100, and the second adhesive layer 202 and The connection of the first main body area 103 can improve the adhesive force between the battery and the cold plate, and improve the stability of the connection of the battery device.

本公开实施例提供的电池装置包括电池,在电池中电池壳体10具有第一盖板12和壳体件11,壳体件11的一端设置有开口,第一盖板12连接于壳体件11的开口,壳体件11的外表面设置有第一连接区101,第一连接区101位于壳体件11靠近第一盖板12的一端,第一盖板12远离壳主体111的一面设置有第二连接区102,并且第二连接区102靠近第一盖板12的边缘,第二连接区102的粗糙度大于第一连接区101的粗糙度,第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,通过第二连接区102的粗糙度和第一连接区101的粗糙度差值大于0且小于等于6μm,避免了第一连接区101和第二连接区102粗糙度差异过大而导致的焊接不均匀的问题,从而提升了电池壳体10连接的稳定性,并且将第二连接区102的粗糙度设置为大于第一连接区101的粗糙度,使得电池在粘接于箱体300内时,提升第一盖板12和箱体300的粘接强度,从而提升电池装置的连接稳定性。The battery device provided by the embodiment of the present disclosure includes a battery. In the battery, the battery case 10 has a first cover plate 12 and a case part 11. An opening is provided at one end of the case part 11. The first cover plate 12 is connected to the case part. 11, the outer surface of the housing part 11 is provided with a first connecting area 101, the first connecting area 101 is located at the end of the housing part 11 close to the first cover plate 12, and the first cover plate 12 is set on the side away from the shell main body 111 There is a second connection area 102, and the second connection area 102 is close to the edge of the first cover plate 12, the roughness of the second connection area 102 is greater than the roughness of the first connection area 101, and the roughness of the second connection area 102 and the first The roughness difference of the first connection region 101 is greater than 0 and less than or equal to 6 μm, and the difference between the roughness of the second connection region 102 and the roughness of the first connection region 101 is greater than 0 and less than or equal to 6 μm, avoiding the first connection region 101 The problem of uneven welding caused by excessive roughness difference with the second connection area 102, thereby improving the stability of the connection of the battery case 10, and setting the roughness of the second connection area 102 to be greater than that of the first connection area 101 roughness, so that when the battery is bonded in the box body 300, the bonding strength between the first cover plate 12 and the box body 300 is improved, thereby improving the connection stability of the battery device.

本公开实施例提供的电池装置可以应用于电动车辆,当电池用于电动车辆时,电池装置可以是电池包,电池包安装于电动车辆上,向电动车辆提供能源。The battery device provided by the embodiments of the present disclosure can be applied to an electric vehicle. When the battery is used in an electric vehicle, the battery device can be a battery pack installed on the electric vehicle to provide energy for the electric vehicle.

在实际应用中,电池包可以安装于电动车辆的车架。电池包可以和车架固定连接。或者电池包可以是模块化电池包,模块化电池包能够可拆卸的连接于车辆主体,便于更换。In practical application, the battery pack can be mounted on the frame of the electric vehicle. The battery pack can be fixedly connected to the frame. Alternatively, the battery pack may be a modular battery pack, which can be detachably connected to the vehicle body for easy replacement.

本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由所附的权利要求指出。Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

Claims (11)

1. A battery, the battery comprising:
the battery shell comprises a first cover plate and a shell piece, at least one end of the shell piece is provided with an opening, the first cover plate is welded to the opening of the shell piece, a first connecting area is arranged on the outer side face of the shell piece and is positioned at one end, close to the first cover plate, of the shell piece, a second connecting area is arranged on the surface, far away from the shell piece, of the first cover plate, and is close to the edge of the first cover plate;
wherein at least the roughness of the second connection region in the first cover plate is greater than the roughness of the first connection region, and the difference between the roughness of the second connection region and the roughness of the first connection region is greater than 0 and less than or equal to 6 μm.
2. The battery of claim 1, wherein the thickness of the first cover plate is greater than the wall thickness of the housing member.
3. The battery of claim 1, wherein the first cover plate and the housing member are connected by laser welding, and wherein the penetration of the melt pool when the first cover plate and the housing member are welded is 0.2w or more, wherein w is the wall thickness of the housing member.
4. The battery of claim 3 wherein the penetration of the melt pool when the first cover plate and the housing member are welded is equal to the wall thickness of the housing member.
5. The battery of claim 1, wherein the housing member comprises:
the shell comprises a shell body, wherein openings are formed in two ends of the shell body, and the first cover plate is arranged at one end of the shell body;
the second cover plate is arranged at one end, far away from the first cover plate, of the shell main body, and the second cover plate and the shell main body are of an integrated structure.
6. The battery of claim 1, wherein a first body region is provided on the side of the housing member remote from the first cover plate, the first body region having a roughness greater than or equal to a roughness of the first connection region.
7. The battery of claim 1, wherein the first cover plate further comprises a second body region having a roughness that is consistent with or greater than a roughness of the second connection region.
8. The battery of any one of claims 1-7, wherein the battery is a cylindrical battery.
9. A battery device, characterized in that it comprises a battery according to any one of claims 1-8.
10. The battery device of claim 9, wherein the battery device further comprises:
the box, the box has the backup pad, the battery is located the backup pad, and the battery with be provided with first glue film between the backup pad, and the battery sets up the one end orientation of first apron the backup pad.
11. The battery device of claim 9, wherein the battery device comprises a plurality of cells with a second glue layer disposed therebetween, the second glue layer being at least partially connected to the first body region of the cells.
CN202223132050.4U 2022-11-24 2022-11-24 Batteries and battery devices Active CN218957870U (en)

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