WO2022110602A1 - 一种焊接压紧装置 - Google Patents

一种焊接压紧装置 Download PDF

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Publication number
WO2022110602A1
WO2022110602A1 PCT/CN2021/085432 CN2021085432W WO2022110602A1 WO 2022110602 A1 WO2022110602 A1 WO 2022110602A1 CN 2021085432 W CN2021085432 W CN 2021085432W WO 2022110602 A1 WO2022110602 A1 WO 2022110602A1
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WO
WIPO (PCT)
Prior art keywords
welding
plate
pressing device
pressing
fixing plate
Prior art date
Application number
PCT/CN2021/085432
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English (en)
French (fr)
Inventor
施敏捷
乔永固
唐凯华
Original Assignee
苏州精控能源科技有限公司
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Publication of WO2022110602A1 publication Critical patent/WO2022110602A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/0008Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016Brazing of electronic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/005Soldering by means of radiant energy
    • B23K1/0056Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08Auxiliary devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08Auxiliary devices therefor
    • B23K3/087Soldering or brazing jigs, fixtures or clamping means
    • 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

Definitions

  • the invention relates to the technical field of lithium battery tab welding, in particular to a welding pressing device.
  • the soft pack type lithium battery module adopts manual soldering method to weld the battery tabs of the battery cells and the fixed copper bars together, so as to realize the series and parallel connection of the batteries.
  • the artificial soldering method is inefficient, and the soldering temperature is high. Continuous soldering will cause the temperature of the cell to rise too high, which will affect the performance of the cell and even damage the cell.
  • the laser welding method can solve the above problems, because the tabs are bent and abut on the copper bar, the bent part of the tab cannot closely contact the copper bar when there is no external pressure between the two. The part will be suspended above the copper bar, and the phenomenon of virtual welding is prone to occur during laser welding.
  • the technical problem to be solved by the present invention is to overcome the defect in the prior art that the tabs and the copper bars cannot be in close contact with each other during laser welding, which leads to false welding.
  • a welding pressing device comprising:
  • a fixing plate which is provided with at least one welding hole
  • the number of pressing members corresponds to the welding holes, the pressing members are arranged on the fixing plate, and the middle of the pressing members is provided with an escape hole, and the escape hole is communicated with the welding hole, The bottom of the pressing member protrudes from the fixing plate;
  • One end of the first elastic member abuts on the fixing plate, and the other end abuts on the pressing member.
  • the upper part of the pressing member is provided with a hanging lug that protrudes outward, and the hanging lug extends along the length direction of the pressing member; the hanging lug is inserted into the In the fixing plate, the other end of the first elastic member abuts on the hanging lug.
  • the fixing plate includes an upper plate and a lower plate, the lower plate is fixed on the bottom of the upper plate, and the welding hole is arranged through the upper plate and the lower plate;
  • the opposite sides of the upper plate and the lower plate are provided with concave areas that are concave toward their respective interiors, and the concave areas are located on the outer sides of both ends of the welding hole; the two concave areas enclose an installation space, and the hanging lugs inserted in the installation space.
  • the top surface of the hanging lug is provided with a first groove
  • the upper plate opposite to the hanging lug is provided with a second groove
  • the first elastic member is The two end faces of the groove abut on the groove bottom surfaces of the first groove and the second groove respectively.
  • At least one end of the two ends of the escape hole is provided with an opening that communicates with the outside world.
  • the multiple welding holes are arranged on the upper plate in parallel and at equal intervals.
  • the above-mentioned welding pressing device further includes at least one reinforcing member, the reinforcing member is provided on the upper plate or the lower plate, and the reinforcing member extends along the length direction of the upper plate.
  • the above-mentioned welding pressing device further includes a clamping mechanism, the clamping mechanism is movably arranged on both sides of the fixed plate in the width direction, the clamping mechanism includes a fastening component, and the clamping mechanism is The fixing assembly is suitable for locking the welding pressing device on the battery module.
  • the clamping mechanism includes two first side plates, the first side plates are hinged on the upper plate; the fastening components are arranged on the first side board.
  • the fastening component includes a fastening screw rod and a second elastic member; an annular boss is provided in the middle of the fastening screw rod, and the fastening screw rod passes through the first elastic member. side panel;
  • the second elastic member is sleeved on the tightening screw, and both ends of the second elastic member are respectively abutted on the first side plate and the annular boss; toward the first side plate
  • the second elastic member applies a thrust toward the inside of the first side plate toward the tightening screw.
  • a fixing plate which is provided with at least one welding hole
  • the number of pressing members corresponds to the welding holes, the pressing members are arranged on the fixing plate, and the middle of the pressing members is provided with an escape hole, and the escape hole is communicated with the welding hole, The bottom of the pressing member protrudes from the fixing plate;
  • One end of the first elastic member abuts on the fixing plate, and the other end abuts on the pressing member.
  • the welding pressing device provided by the present invention
  • the bottom of the pressing part is abutted on the copper bar and the top of the tab
  • the first elastic member applies downward pressure towards the pressing It is pressed above the bent part of the tab, so that the bent part of the tab is in close contact with the upper surface of the copper bar to avoid floating; the laser head extends into the welding hole and the hole for laser welding, and the bent part of the tab is welded.
  • the phenomenon of virtual soldering is avoided; and compared with artificial soldering, it is more efficient and will not damage the battery core at high temperature.
  • FIG. 1 is a schematic diagram of a first angle of a welding pressing device provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a second angle of a welding pressing device provided by an embodiment of the present invention.
  • Fig. 3 is the use state diagram of the welding pressing device
  • FIG. 4 is a cross-sectional view of a welding pressing device
  • Figure 5 is a cross-sectional view of the welding pressing device after removing the pressing member at the cut surface
  • FIG. 6 is a cross-sectional view of a portion of the fastening assembly
  • Fig. 9 is the schematic diagram of pressing part
  • Fig. 10 is a schematic view of the pressing member.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • This embodiment provides a welding pressing device, as shown in FIG. 1 to FIG. 3 , which includes a fixing plate, a pressing member 2 and a first elastic member 3 .
  • the fixing plate is provided with at least one welding hole 13; the number of pressing parts 2 corresponds to the welding holes 13; the pressing part 2 is arranged on the fixing plate; Connecting with the welding hole 13 , the bottom of the pressing member 2 protrudes from the fixing plate; one end of the first elastic member 3 abuts on the fixing plate, and the other end abuts on the pressing member 2 .
  • the bottom of the pressing member 2 abuts on the copper bar and the tabs, and the first elastic member 3 applies downward pressure toward the pressing member 2 to press it on.
  • the bent part of the tab Above the bent part of the tab, the bent part of the tab is in close contact with the upper surface of the copper bar to prevent the tab from hanging in the air; the laser head extends into the welding hole 13 and the escape hole 21 for laser welding, and the bent part of the tab is welded.
  • the phenomenon of virtual soldering is avoided; and compared with artificial soldering, it is more efficient and will not damage the battery core at high temperature.
  • the upper part of the pressing part 2 is provided with a hanging lug 22 that protrudes outward, and the hanging lug 22 extends along the length direction of the pressing part 2; the pressing part 2 is inserted into the fixing plate through the hanging lug 22, The other end of the first elastic member 3 abuts on the hanging lug 22 .
  • the fixing plate includes an upper plate 11 and a lower plate 12, the lower plate 12 is fixed to the bottom of the upper plate 11 by screws, and the welding holes 13 are provided through the upper plate 11 and the lower plate 12, and the lower plate 12 is provided.
  • the width of the upper plate 12 is smaller than that of the upper plate 11 , and both sides of the lower plate 12 in the width direction are the same distance from both ends of the upper plate 11 in the width direction.
  • the opposite sides of the upper plate 11 and the lower plate 12 are provided with concave areas that are concave toward their respective interiors.
  • the installation space 14 is enclosed by the two concave areas.
  • the mounting ears 22 are inserted into the installation space 14 .
  • the bottom surface of the mounting ears 22 abuts on the lower plate 12 to fix the pressing member 2 between the upper plate 11 and the lower plate 12 .
  • the top surface of the hanging lug 22 is provided with a first groove 221
  • the upper plate 11 opposite to the hanging lug 22 is provided with a second groove 111
  • the two end surfaces of the first elastic member 3 are respectively abutted against the first groove 221 and
  • the upper and lower ends of the first elastic member 3 are respectively embedded in the first groove 221 and the second groove 111 to position the first elastic member 3 .
  • the first elastic member 3 is a compression spring, and the compression spring exerts a downward pressure on the pressing member 2, so that it is pressed above the bent portion of the tab.
  • both ends (both ends in the length direction) of the accommodating hole 21 of the pressing member 2 are provided with openings 211 communicating with the outside world, and welding fumes and hot gas can be discharged from the openings 211 in time during welding.
  • the welding pressing device further includes a clamping mechanism, and the clamping mechanism includes two first side plates 51 , a fastening assembly, a handle 53 and a stopper 54 .
  • the two first side panels 51 are hinged on both sides of the upper panel 11 respectively.
  • Any set of fastening components includes a fastening screw 521 and a second elastic member 522.
  • the middle of the fastening screw 521 is provided with an annular boss 5211, and the stopper 54 is arranged on the inner wall surface of the first side plate 51.
  • the first side plate 51 and the stopper 54 are provided with accommodating chambers for accommodating the second elastic member 522, the second elastic member 522 is sleeved on the tightening screw 521, the first Both ends of the two elastic members 522 abut on the first side plate 51 and the annular boss 5211 respectively, and the annular boss 5211 abuts on the stopper 54 .
  • the sheet metal brackets at both ends of the battery module are provided with mounting holes.
  • the first side plate 51 is rotated to the side of the battery module, and the fastening screws 521 are inserted through the mounting holes to fix the welding pressing device on the battery module. on the group.
  • the clamping mechanism tightens the upper plate 11 and the lower plate 12 from the side, so that the pressing member 2 is pressed more tightly on the bent portion of the tab.
  • the second elastic member 522 is a compression spring.
  • the fastening screw 521 When installing the fastening component, when the first side plate 51 is rotated downward to a certain distance from the side of the battery module, the fastening screw 521 is moved out of the first side plate 51, and the annular boss 5211 presses the second elastic member 522 to make the fastening screw 521 move.
  • the stopper 54 abuts on the sheet metal bracket, the tightening screw 521 is loosened, and the second elastic member 522 is reset to push the tightening screw 521 into the mounting hole of the sheet metal bracket.
  • the arrangement of the second elastic member 522 is convenient for Mount the clamping mechanism to the sheet metal bracket.
  • the outer end of the tightening screw 521 is sleeved with a star-shaped handle 53, which is convenient for hand-held operation.
  • the upper plate 11 and the lower plate 12 are both in the shape of a long strip, and there are a plurality of welding holes 13 on them.
  • the plurality of welding holes 13 are arranged on the upper plate 11 and the lower plate 12 in parallel and at equal intervals.
  • the number of tightening parts 2 is the same as that of the battery module tabs, which can be adjusted according to the number of tabs.
  • the welding pressing device can press and position all the tabs of the battery module at one time, and the pressing operation is convenient and quick.
  • the upper plate 11 and the lower plate 12 are long in length and thin in thickness, two reinforcing parts 4 are provided on the top surface of the upper plate 11 , and the two reinforcing parts 4 are respectively located on both sides of the top surface in the width direction of the upper plate 11 and along the top surface of the upper plate 11 .
  • the board 11 extends in the longitudinal direction.
  • the reinforcing member 4 is a reinforcing aluminum plate. The arrangement of the reinforcing member 4 can prevent the middle parts of the upper plate 11 and the lower plate 12 (the middle part in the length direction of the upper plate 11 ) from arching, so that the pressing member 2 in the middle cannot press the tabs.
  • the upper plate 11 and the lower plate 12 can be integrally formed, that is, the fixing plate is an integral structure, and an installation space 14 for the mounting ears 22 to be embedded in the middle of the fixing plate is sufficient.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种焊接压紧装置,包括固定板、压紧部件(2)和第一弹性件(3),固定板上设有至少一个焊接孔(13);压紧部件数量与焊接孔对应,压紧部件设于固定板上,压紧部件中部设有让位孔(21),让位孔与焊接孔连通,压紧部件的底部伸出固定板;第一弹性件一端抵接在固定板上,另一端抵接在压紧部件上。该焊接压紧装置能够使极耳折弯部与铜排上表面紧密接触,避免极耳悬空;激光头伸入焊接孔和让位孔中进行激光焊接,将极耳折弯部焊接在铜排上,避免虚焊现象;效率高、不会高温破坏电池芯。

Description

一种焊接压紧装置 技术领域
本发明涉及锂电池极耳焊接技术领域,具体涉及一种焊接压紧装置。
背景技术
软包型锂电池模组采取人工锡焊方式把电池芯的电池极耳和起固定作用的铜排焊接在一起,进而实现电池的串并联。人工锡焊方式效率低,并且锡焊温度高,连续焊接会造成电芯温升过高,会影响电池芯的性能、甚至损坏电池芯。而激光焊接方式虽然可以解决上述问题,但由于极耳是弯折后抵接在铜排上方,两者之间无外力施压时极耳折弯部无法紧密抵接在铜排上,折弯部会部分悬空于铜排上方,激光焊接时容易出现虚焊现象。
发明内容
因此,本发明要解决的技术问题在于克服现有技术中极耳与铜排激光焊接时两者无法紧密抵接导致容易出现虚焊的缺陷。
为此,本发明提供一种焊接压紧装置,包括
固定板,其上设有至少一个焊接孔;
压紧部件,其数量与所述焊接孔对应,所述压紧部件设于所述固定板上,所述压紧部件中部设有让位孔,所述让位孔与所述焊接孔连通,所述压紧部件的底部伸出所述固定板;
第一弹性件,其一端抵接在所述固定板上,另一端抵接在所述压紧部件上。
可选地,上述的焊接压紧装置,所述压紧部件上部设有向外凸出的挂耳,所述挂耳沿所述压紧部件长度方向延伸;所述挂耳插接在所述固定板内,所述第一弹性件的另一端抵接在所述挂耳上。
可选地,上述的焊接压紧装置,所述固定板包括上板和下板,所述下板固定于所述上板底部,所述焊接孔贯穿所述上板和下板设置;
所述上板和下板相对的一面均设有朝向各自内部凹陷的凹陷区,所述凹陷区位于所述焊接孔的两端外侧;两个所述凹陷区围成安装空间,所述挂耳插接在所述安装空间内。
可选地,上述的焊接压紧装置,所述挂耳的顶面设有第一凹槽,与所述挂耳相对的所述上板上设有第二凹槽,所述第一弹性件的两端面分别抵接在所述第一凹槽和所述第二凹槽的槽底面上。
可选地,上述的焊接压紧装置,所述让位孔两端中的至少一端设有与外界连通的开口。
可选地,上述的焊接压紧装置,所述焊接孔具有多个,多个所述焊接孔平行等间距排布在所述上板上。
可选地,上述的焊接压紧装置,还包括至少一个加强部件,所述加强部件设于所述上板或所述下板上,所述加强部件沿所述上板的长度方向延伸。
可选地,上述的焊接压紧装置,还包括夹紧机构,所述夹紧机构可活动地设于所述固定板宽度方向的两侧,所述夹紧机构包括紧固组件,所述 紧固组件适于将所述焊接压紧装置锁紧在电池模组上。
可选地,上述的焊接压紧装置,所述夹紧机构包括两个第一侧板,所述第一侧板铰接在所述上板上;所述紧固组件设于所述第一侧板上。
可选地,上述的焊接压紧装置,所述紧固组件包括紧固螺杆和第二弹性件;所述紧固螺杆中部设有环形凸台,所述紧固螺杆穿设在所述第一侧板上;
所述第二弹性件套设在所述紧固螺杆上,所述第二弹性件的两端分别抵接在所述第一侧板和所述环形凸台上;朝向所述第一侧板外侧移动所述紧固螺杆时,所述第二弹性件朝向所述紧固螺杆施加朝向所述第一侧板内侧的推力。
固定板,其上设有至少一个焊接孔;
压紧部件,其数量与所述焊接孔对应,所述压紧部件设于所述固定板上,所述压紧部件中部设有让位孔,所述让位孔与所述焊接孔连通,所述压紧部件的底部伸出所述固定板;
第一弹性件,其一端抵接在所述固定板上,另一端抵接在所述压紧部件上。
本发明技术方案,具有如下优点:
1.本发明提供的焊接压紧装置使用时,将其放置于电池模组上,压紧部件底部抵接在铜排和极耳上方,第一弹性件朝向压紧部件施加向下的压力使其压紧在极耳折弯部上方,使极耳折弯部与铜排上表面紧密接触,避免悬空;激光头伸入焊接孔和让位孔中进行激光焊接,将极耳折弯部焊接在铜排上,避免虚焊现象;并且相比人工锡焊效率高、不会高温破坏电池 芯。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施方式,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。
图1为本发明实施例提供的焊接压紧装置的第一角度示意图;
图2为本发明实施例提供的焊接压紧装置的第二角度示意图;
图3为焊接压紧装置的使用状态图;
图4为焊接压紧装置的剖视图;
图5为焊接压紧装置拆除剖切面处的压紧部件后的剖视图;
图6为紧固组件部分的剖视图;
图7为上板的背面局部示意图;
图8为下板的顶面局部示意图;
图9为压紧部件的示意图;
图10为压紧部件的示意图。
附图标记说明:
11-上板;111-第二凹槽;12-下板;13-焊接孔;14-安装空间;2-压紧部件;21-让位孔;211-开口;22-挂耳;221-第一凹槽;3-第一弹性件;4-加强部件;51-第一侧板;521-紧固螺杆;5211-环形凸台;522-第二弹 性件;53-把手;54-挡块。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,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发明的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;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。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
此外,下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
实施例
本实施例提供一种焊接压紧装置,如图1至图3所示,其包括固定板、压紧部件2和第一弹性件3。
其中,固定板上设有至少一个焊接孔13;压紧部件2数量与焊接孔13对应,压紧部件2设于固定板上,压紧部件2中部设有让位孔21,让位孔21与焊接孔13连通,压紧部件2的底部伸出固定板;第一弹性件3一端抵接在固定板上,另一端抵接在压紧部件2上。
使用时,将焊接压紧装置放置于电池模组上,压紧部件2底部抵接在铜排和极耳上方,第一弹性件3朝向压紧部件2施加向下的压力使其压紧在极耳折弯部上方,使极耳折弯部与铜排上表面紧密接触,避免极耳悬空;激光头伸入焊接孔13和让位孔21中进行激光焊接,将极耳折弯部焊接在铜排上,避免虚焊现象;并且相比人工锡焊效率高、不会高温破坏电池芯。
参见图9和图10,压紧部件2上部设有向外凸出的挂耳22,挂耳22沿压紧部件2长度方向延伸;压紧部件2通过挂耳22插接在固定板内,第一弹性件3的另一端抵接在挂耳22上。
参见图4、图5图7和图8,固定板包括上板11和下板12,下板12通过螺丝固定于上板11底部,焊接孔13贯穿上板11和下板12设置,下板12宽度小于上板11,下板12宽度方向的两侧边距离上板11宽度方向的两端部距离相等。上板11和下板12相对的一面均设有朝向各自内部凹陷的凹陷区,凹陷区位于焊接孔13的两端(焊接孔13长度方向的两端)外侧;上板11与下板12的两个凹陷区围成安装空间14,挂耳22插接在安装空间14内,挂耳22底面抵接在下板12上,以将压紧部件2固定在上板11和下 板12之间。
挂耳22的顶面设有第一凹槽221,与挂耳22相对的上板11上设有第二凹槽111,第一弹性件3的两端面分别抵接在第一凹槽221和第二凹槽111的槽底面上,第一弹性件3上下端分别嵌置在第一凹槽221和第二凹槽111内以定位第一弹性件3。例如,第一弹性件3为压缩弹簧,压缩弹簧向压紧部件2施加向下的压力,使其压紧在极耳折弯部上方。
参见图10,压紧部件2的让位孔21两端(长度方向的两端)均设有与外界连通的开口211,焊接时焊接烟气和热气可从开口211及时排出。
参见图1至图3和图6,焊接压紧装置还包括夹紧机构,夹紧机构包括两个第一侧板51、紧固组件、把手53和挡块54。两个第一侧板51分别铰接在上板11两侧。紧固组件具有四组,四组紧固组件分别设于两个第一侧板51的两端。任一组紧固组件包括紧固螺杆521和第二弹性件522,紧固螺杆521中部设有环形凸台5211,挡块54设于第一侧板51的内壁面上,紧固螺杆521穿设在第一侧板51和挡块54上,第一侧板51和挡块54上设有容纳第二弹性件522的容纳腔,第二弹性件522套设在紧固螺杆521上,第二弹性件522的两端分别抵接在第一侧板51和环形凸台5211上,环形凸台5211抵接在挡块54上。
电池模组两端部的钣金支架上设有安装孔,第一侧板51转动至电池模组侧边,紧固螺杆521穿设在安装孔上,以将焊接压紧装置固定在电池模组上。夹紧机构从侧边拉紧上板11和下板12,使压紧部件2更加紧密地压紧在极耳折弯部上。
例如,第二弹性件522为压缩弹簧。安装紧固组件时,第一侧板51向下转动至距电池模组侧边一定距离时,向第一侧板51外移动紧固螺杆521,环形凸台5211挤压第二弹性件522使其压缩,当挡块54抵接在钣金支架上时,松开紧固螺杆521,第二弹性件522复位将紧固螺杆521推进钣金支架的安装孔,第二弹性件522的设置便于将夹紧机构安装至钣金支架上。紧固螺杆521外端套设有星型把手53,方便手持操作。
上板11和下板12均呈长条形板状,其上设有多个焊接孔13,多个焊接孔13平行等间距排布在上板11和下板12上,焊接孔13和压紧部件2数量与电池模组极耳数量相同,可根据极耳数量进行调整。焊接压紧装置可一次性压紧定位电池模组的所有极耳,压紧操作方便快捷。由于上板11和下板12长度长、厚度较薄,在上板11顶面上设有两个加强部件4,两个加强部件4分别位于上板11宽度方向的顶面两侧并沿上板11的长度方向延伸。例如,加强部件4为加强铝板。加强部件4的设置可防止上板11和下板12中部(上板11长度方向的中部)拱起,导致中部的压紧部件2无法压紧极耳。
作为实施例的第一个可替换实施方式,上板11和下板12可以一体成型设置,即固定板为整体结构,在其中部开设供挂耳22嵌入的安装空间14即可。
显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保 护范围之中。

Claims (10)

  1. 一种焊接压紧装置,其特征在于,包括
    固定板,其上设有至少一个焊接孔(13);
    压紧部件(2),其数量与所述焊接孔(13)对应,所述压紧部件(2)设于所述固定板上,所述压紧部件(2)中部设有让位孔(21),所述让位孔(21)与所述焊接孔(13)连通,所述压紧部件(2)的底部伸出所述固定板;
    第一弹性件(3),其一端抵接在所述固定板上,另一端抵接在所述压紧部件(2)上。
  2. 根据权利要求1所述的焊接压紧装置,其特征在于,所述压紧部件(2)上部设有向外凸出的挂耳(22),所述挂耳(22)沿所述压紧部件(2)长度方向延伸;所述挂耳(22)插接在所述固定板内,所述第一弹性件(3)的另一端抵接在所述挂耳(22)上。
  3. 根据权利要求2所述的焊接压紧装置,其特征在于,所述固定板包括上板(11)和下板(12),所述下板(12)固定于所述上板(11)底部,所述焊接孔(13)贯穿所述上板(11)和下板(12)设置;
    所述上板(11)和下板(12)相对的一面均设有朝向各自内部凹陷的凹陷区,所述凹陷区位于所述焊接孔(13)的两端外侧;两个所述凹陷区围成安装空间(14),所述挂耳(22)插接在所述安装空间(14)内。
  4. 根据权利要求3所述的焊接压紧装置,其特征在于,所述挂耳(22)的顶面设有第一凹槽(221),与所述挂耳(22)相对的所述上板(11)上设有第二凹槽(111),所述第一弹性件(3)的两端面分别抵接在所述第一凹槽(221)和所述第二凹槽(111)的槽底面上。
  5. 根据权利要求1-4中任一项所述的焊接压紧装置,其特征在于,所述让位孔(21)两端中的至少一端设有与外界连通的开口(211)。
  6. 根据权利要求3-5中任一项所述的焊接压紧装置,其特征在于,所述焊接孔(13)具有多个,多个所述焊接孔(13)平行等间距排布在所述固定板(11)上。
  7. 根据权利要求6所述的焊接压紧装置,其特征在于,还包括至少一个加强部件(4),所述加强部件(4)设于所述上板(11)或所述下板(12)上,所述加强部件(4)沿所述上板(11)的长度方向延伸。
  8. 根据权利要求3-7中任一项所述的焊接压紧装置,其特征在于,还包括夹紧机构,所述夹紧机构可活动地设于所述固定板宽度方向的两侧,所述夹紧机构包括紧固组件,所述紧固组件适于将所述焊接压紧装置锁紧在电池模组上。
  9. 根据权利要求8所述的焊接压紧装置,其特征在于,所述夹紧机构包括两个第一侧板(51),所述第一侧板(51)铰接在所述上板(11)上;所述紧固组件设于所述第一侧板(51)上。
  10. 根据权利要求9所述的焊接压紧装置,其特征在于,所述紧固组件包括紧固螺杆(521)和第二弹性件(522);所述紧固螺杆(521)中部设有环形凸台(5211),所述紧固螺杆(521)穿设在所述第一侧板(51)上;
    所述第二弹性件(522)套设在所述紧固螺杆(521)上,所述第二弹性件(522)的两端分别抵接在所述第一侧板(51)和所述环形凸台(5211)上;朝向所述第一侧板(51)外侧移动所述紧固螺杆(521)时,所述第二弹性件(522)朝向所述紧固螺杆(521)施加朝向所述第一侧板(51)内侧的推力。
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