WO2023131018A1 - 焊接定位夹具 - Google Patents

焊接定位夹具 Download PDF

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Publication number
WO2023131018A1
WO2023131018A1 PCT/CN2022/142599 CN2022142599W WO2023131018A1 WO 2023131018 A1 WO2023131018 A1 WO 2023131018A1 CN 2022142599 W CN2022142599 W CN 2022142599W WO 2023131018 A1 WO2023131018 A1 WO 2023131018A1
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WO
WIPO (PCT)
Prior art keywords
positioning
battery module
positioning surface
pressing
driving mechanism
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PCT/CN2022/142599
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English (en)
French (fr)
Inventor
温昌金
李其明
聂瑞莲
赵宾
Original Assignee
宁德时代新能源科技股份有限公司
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Publication of WO2023131018A1 publication Critical patent/WO2023131018A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment

Definitions

  • the present application relates to the technical field of power batteries, and more specifically, relates to a welding positioning fixture.
  • the power battery of new energy vehicles is formed by combining multiple different battery modules together to form a large module structure to meet the needs of vehicle power.
  • two battery modules are first welded into a double-unit module, and then multiple double-unit modules are connected in series, parallel or mixed to form a whole and accommodated in the box.
  • it is necessary to assemble a single battery module then assemble the two battery modules, and finally weld them. Since the bottom of the battery module is used as the positioning reference during each assembly, there are many dimension rings, which cannot ensure the flatness of the mounting lugs on the side of the battery module, and the assembly accuracy is low.
  • the present application discloses a welding positioning fixture.
  • a welding positioning jig is used for positioning two battery modules.
  • the first side of each battery module is protrudingly provided with hanging ears.
  • a battery module is placed on the supporting device and can float along the first direction, two sets of first side pressure devices are respectively placed on the first side of a battery module, and the battery module is positioned along the second direction perpendicular to the first direction group, the pressing device is used to position the battery module along the first direction.
  • each first side pressing device has a first positioning surface
  • the pressing device has a second positioning surface.
  • the two battery modules can float in the first direction, The mounting lug of each battery module abuts against a first positioning surface.
  • the support device can carry the battery module, and the battery module can float in the first direction, so as to prevent the battery module from being constrained in the first direction and unable to abut against the first positioning surface; Position the mounting lugs of the two battery modules in the first direction based on the surface, better ensure the flatness of the mounting lugs of the two battery modules, and improve the flatness of the mounting lugs that cannot meet the traditional positioning reference based on the bottom of the battery module Defects in assembly requirements.
  • the supporting device includes a bearing platform and a floating mechanism
  • the bearing platform is provided with an accommodation groove
  • the floating mechanism is arranged on the bottom wall of the accommodation groove and can elastically expand and contract along the first direction
  • the battery module is accommodated in the accommodation chamber. Put it in the groove and abut against the floating mechanism.
  • each first side pressing device further has a third positioning surface perpendicular to the first positioning surface, and the third positioning surface is used to abut against the first side of the battery module.
  • the first side pressing device includes a first driving mechanism and a side pressing seat, and the first driving mechanism is connected to the side pressing seat and used to drive the side pressing seat to translate and/or lift.
  • the positions of the first positioning surface and the third positioning surface can be flexibly adjusted by driving the side pressure seat to translate and/or lift.
  • the side pressure seat includes a first pole and a second pole connected vertically, the second pole is connected with the first driving mechanism, and the first pole is provided with a first positioning surface and a second pole on different sides. Three positioning surfaces.
  • the two battery modules can be positioned along the second direction by the third positioning surface of the first lateral pressure device, which is beneficial to reduce the number of lateral pressure devices.
  • the first pole is in the shape of a cuboid, and both the first positioning surface and the third positioning surface are planes.
  • each second pole is arranged side by side and spaced apart from the first pole.
  • the welding positioning fixture further includes two sets of second side pressing devices, the second side pressing devices are used to position the battery module along a third direction, and the third direction is perpendicular to the first direction and the second direction.
  • the two battery modules can be positioned in the third direction to prevent the battery modules from moving.
  • the second side pressing device includes a second driving mechanism, a first side pressing block and a second side pressing block, and the second driving mechanism is used to drive the first side pressing block and the second side pressing block Relatively moving in three directions, the first side pressing block and the second side pressing block are pressed on the end side of the battery module.
  • the two battery modules can be positioned in the third direction by the two side pressing blocks, so as to prevent the battery modules from shifting.
  • the number of supporting devices is two groups, and the two groups of supporting devices can be close to or far away from each other.
  • Each group of supporting devices is placed with a battery module, and each battery module corresponds to a group of first lateral pressure devices and a battery module.
  • the pressing device includes a pressing driving mechanism and a pressing seat
  • the pressing driving mechanism is used to drive the pressing seat to translate and/or lift
  • the second positioning surface is provided at the bottom of the pressing seat.
  • the lower pressing seat is driven to move by the lower pressing driving mechanism, thereby adjusting the position of the second positioning surface.
  • Fig. 1 is a first schematic diagram of a welding positioning jig in an embodiment
  • Fig. 2 is the second schematic diagram of the welding positioning jig in an embodiment
  • Fig. 3 is a top view of the welding positioning fixture shown in Fig. 2;
  • Fig. 4 is a schematic diagram of the support device in the welding positioning fixture shown in Fig. 2;
  • FIG. 5 is a schematic diagram of a first lateral pressure device in the welding positioning jig shown in FIG. 2 .
  • the first side pressure device 201, the first positioning surface; 202, the third positioning surface; 210, the first driving mechanism; 220, the side pressure seat; 221, the first pole; 222, the second pole; 300, the lower 301, the second positioning surface; 310, the lower pressing seat; 400, the second side pressing device; 410, the first side pressing block; 420, the second side pressing block.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • a first feature being "on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the power battery is a rechargeable battery that is the power source of new energy vehicles and is widely used in the field of new energy vehicles.
  • the power battery of new energy vehicles is formed by combining multiple different battery modules together to form a large module structure to meet the needs of vehicle power.
  • the battery includes a box body and a battery module, and the box body is used to accommodate the battery module.
  • a plurality of battery cells may be connected in series or in parallel or in combination to form a battery module, and then a plurality of battery modules may be connected in series or in parallel or in combination to form a whole and accommodated in the box. It can also be that all the battery cells are directly connected in series, parallel or mixed together, and then the whole composed of all the battery cells is accommodated in the box.
  • two battery modules are firstly welded into a dual-combination module, and then a plurality of dual-combination modules are connected in series or in parallel or mixed to form a whole and accommodated in the box.
  • the grouping process of double-unit modules it is necessary to assemble a single battery module, then assemble the two battery modules, and finally weld them. Since the bottom of the battery module is used as the positioning reference during each assembly, there are many dimension rings, which cannot ensure the flatness of the mounting lugs on the side of the battery module, and the assembly accuracy is low.
  • the inventor has designed a welding positioning fixture after in-depth research, which can improve the assembly accuracy of the double-assembly module and better ensure the flatness of the hanging ears of the double-assembly module.
  • the welding positioning jig in one embodiment is used for positioning two battery modules 10 , each battery module 10 has a mounting ear 20 protruding from the first side 11 .
  • the welding positioning fixture includes a support device 100 , two sets of first side pressing devices 200 and a pressing device 300 .
  • the two battery modules 10 are placed on the supporting device 100 and can float along the first direction.
  • the pressing device 300 is used to position the battery module 10 along the first direction.
  • Two sets of first side pressing devices 200 are respectively pressed on a battery module
  • the first side 11 of the group 10 positions the battery module 10 along a second direction, which is perpendicular to the first direction.
  • each first lateral pressing device 200 has a first positioning surface 201
  • the pressing device 300 has a second positioning surface 301; as shown in FIG.
  • the two battery modules 10 can float in the first direction, so that each battery module 10 The hanging ear 20 abuts against a first positioning surface 201 .
  • the two batteries need to be welded into a double-unit module, and the opposite sides of the double-unit module have hanging ears 20 respectively. Assembled with other components through the mounting ear 20. Due to assembly requirements, it is necessary to ensure the flatness of the mounting lugs 20 on both sides of the double-assembly module, that is, the mounting ears 20 on both sides of the double-assembly module are at the same height, so as to avoid affecting the subsequent assembly process and assembly accuracy.
  • the supporting device 100 can carry the battery module 10, and the battery module 10 can float in the first direction, so as to prevent the battery module 10 from being constrained in the first direction and unable to abut against the first positioning surface 201;
  • the first positioning surface 201 is used as a reference to position the mounting lugs 20 of the two battery modules 10 in the first direction, so as to better ensure the flatness of the mounting lugs 20 of the two battery modules 10, and improve the traditional positioning of the bottom of the battery module 10.
  • the positioning reference leads to the defect that the flatness of the mounting lug 20 cannot meet the assembly requirements.
  • the first direction is the Z direction shown in FIG. 1
  • the second direction is the X direction shown in FIG. 1 .
  • the above-mentioned welding positioning fixture further includes an electrically connected sensor module and a controller (not shown in the figure).
  • the sensing module includes a first sensor.
  • the first sensor is arranged on the first lateral pressure device 200 and is used to detect the position information of the first lateral pressure device 200 .
  • the controller controls the movement of the first lateral pressure device 200 according to the position information.
  • each battery module 10 includes a first side 11 , an end side 12 , a top side 13 , a second side and a bottom side (not shown).
  • the first side 11 is arranged opposite to the second side, and the end sides 12 are perpendicular to the first side 11 and the second side, the number of the end sides 12 is two and the two end sides 12 are arranged opposite.
  • the supporting device 100 is supported on the bottom side of the battery module 10 , and the first side pressing device 200 is placed on the first side 11 to make the second side of the two battery modules 10
  • the two sides are abutted, and the end sides 12 of the two battery modules 10 need to be welded.
  • the number of hanging ears 20 disposed on the first side 11 may be multiple, and the multiple hanging ears 20 are arranged side by side and spaced along the third direction.
  • the third direction is the Y direction shown in FIG. 1 , and the third direction is perpendicular to the first direction and the second direction.
  • the support device 100 includes a bearing platform 110 and a floating mechanism 120, the bearing platform 110 is provided with a housing groove 111, the floating mechanism 120 is arranged on the bottom wall of the housing groove 111 and can be elastically stretched along the first direction, the battery The module 10 is accommodated in the receiving groove 111 and abuts against the floating mechanism 120 .
  • the elastic expansion and contraction of the floating mechanism 120 can change the position of the battery module 10 in the first direction. It can float up and down, so as to abut against the first positioning surface 201, realize the effective positioning of the mounting ear 20 of the battery module 10, and prevent the bottom surface of the mounting ear 20 from being unable to abut against the first positioning surface due to the fixed position of the battery module 10 201 case.
  • the floating mechanism 120 may be a spring, an elastic plate or an elastic sheet.
  • the floating mechanism 120 elastically expands and contracts to change the position of the bottom side of the battery module 10 in the first direction (direction Z shown in FIG. 4 ).
  • the carrying platform 110 has its own floating mechanism 120 , which facilitates the simplification of assembly steps and assembly structure.
  • the floating mechanism 120 can also be detachably assembled on the carrying platform 110 , and the floating mechanism 120 can be disassembled when not in use, which is beneficial to expand the application range of the supporting device 100 .
  • each first lateral pressure device 200 also has a third positioning surface 202 perpendicular to the first positioning surface 201, and the third positioning surface 202 is used to abut against the first positioning surface of the battery module 10. side 11.
  • the first positioning surface 201 of the first side pressing device 200 can be used to position the hanging ears 20 of the two battery modules 10, and the third positioning surface 202 of the first side pressing device 200 can be used to position the two mounting ears 20 along the second direction.
  • a battery module 10 is beneficial to reduce the number of side pressure devices, save space and facilitate operation.
  • the third positioning surface 202 in one group of first lateral pressure devices 200 is used as the positioning reference side, and the third positioning surface 202 in the other group of first lateral pressure devices 200 is used as the positioning reference side. active side.
  • the two sets of first lateral pressure devices 200 can be moved to the second position of the two first. After a positioning surface 201 is at the same preset height, move a group of first lateral pressure devices 200 to the first preset position along the second direction and keep it still, and finally move another group of first lateral pressure devices 200 along the second direction. The two directions move until the third positioning surface 202 abuts against the first side 11 of the battery module 10 , so that the two sets of first side pressing devices 200 jointly press the two battery modules 10 .
  • the movement of the first lateral pressure device 200 may be controlled by the controller according to the position information fed back by the first sensor.
  • the first side pressure device 200 includes a first drive mechanism 210 and a side pressure seat 220, the first drive mechanism 210 is connected to the side pressure seat 220 and is used to drive the side pressure seat 220 to move in translation and/or or lifting motion.
  • the first positioning surface 201 and the third positioning surface 202 are both disposed on the side pressure seat 220 .
  • the positions of the first positioning surface 201 and the third positioning surface 202 can be flexibly adjusted by driving the side pressure seat 220 to translate and/or lift.
  • the first driving mechanism 210 may be a motor or a cylinder.
  • the first driving mechanism 210 can drive the side pressure seat 220 to move in translation, so that the side pressure seat 220 can be adjusted in the second direction (the X direction shown in FIG. 1 ) and the third direction (the Y direction shown in FIG. 1 ).
  • the first driving mechanism 210 may be a motor or an air cylinder.
  • the first driving mechanism 210 can drive the side pressure seat 220 to move up and down, so as to adjust the position of the side pressure seat 220 in the first direction (direction Z shown in FIG. 1 ).
  • the first driving mechanism 210 may also be a mobile platform.
  • the first driving mechanism 210 can drive the side pressure seat 220 to translate and lift, so that the side pressure seat 220 can move in the first direction (the Z direction shown in FIG. 1 ), the second direction (the X direction shown in FIG. 1 ) and the third direction. (Y direction shown in Figure 1) to adjust the position.
  • the side pressure seat 220 includes a first strut 221 and a second strut 222 connected vertically, the second strut 222 is connected with the first driving mechanism 210, the first strut
  • the first positioning surface 201 and the third positioning surface 202 are provided on different sides of the 221 .
  • the first positioning surface 201 is disposed on the top side of the first pole 221
  • the third positioning surface 202 is disposed on the side of the first pole 221 facing the battery module 10 .
  • the first pole 221 is in the shape of a cuboid, and the first positioning surface 201 and the third positioning surface 202 are both flat, so as to better ensure the flatness of the positioning of the hanging ear 20 and the battery module 10 .
  • first strut 221 and the second strut 222 are integrally formed with good integrity and high mechanical strength.
  • first support rod 221 and the second support rod 222 can also be a split structure, and the two can be connected by riveting or welding.
  • each second pole 222 is arranged side by side on the first pole 221 at intervals.
  • the second pole 222 is in the shape of a cuboid. In other embodiments, the second pole 222 may also be columnar or other irregular shapes.
  • each second pole 222 is provided with a first driving mechanism 210 .
  • only one first driving mechanism 210 may be provided, and the same first driving mechanism 210 drives multiple second poles 222 to move.
  • the battery module 10 is positioned to prevent the battery module 10 from moving.
  • the welding positioning jig further includes two sets of second side pressing devices 400 for positioning the battery module 10 along the third direction.
  • each set of second lateral pressure devices 400 positions a battery module 10 . Since the end sides 12 of the two batteries need to be welded, two sets of second lateral pressure devices 400 are arranged adjacent to each other and an avoidance space should be reserved between them.
  • the laser of the welding device can be irradiated from the avoidance space to the end sides 12 of the two battery modules 10 to realize the welding of the two battery modules 10 .
  • the second side pressing device 400 includes a second driving mechanism, a first side pressing piece 410 and a second side pressing piece 420, and the second driving mechanism is used to drive the first side pressing piece 410 And the second side pressing block 420 moves relatively in the third direction.
  • the first side pressing block 410 serves as the positioning reference side
  • the second side pressing block 420 serves as the positioning active side.
  • the first side pressing block 410 serves as the positioning reference side
  • the second side pressing block 420 serves as the positioning active side.
  • the second driving mechanism is a motor or a cylinder.
  • the sensing module also includes a second sensor (not shown in the figure), the second sensor is arranged on the second side pressing device 400 and is used to detect the position information of the first side pressing block 410 and the second side pressing block 420, The controller controls the movement of the first side pressing block 410 and the second side pressing block 420 according to the position information.
  • the first side pressing block 410 and the second side pressing block 420 are also flat to better position the battery module. 10.
  • the pressing device 300 includes a pressing driving mechanism (not shown) and a pressing seat 310 , and the pressing driving mechanism is used to drive the pressing seat 310 to translate and/or lift.
  • the second positioning surface 301 is disposed on the bottom of the pressing seat 310 .
  • the pressing seat 310 is driven to move by the pressing driving mechanism, thereby changing the position of the second positioning surface 301 .
  • the second positioning surface 301 is also flat.
  • the push-down driving mechanism may be a motor or an air cylinder.
  • the pressing driving mechanism can drive the pressing seat 310 to move in translation, so that the pressing seat 310 can adjust its position in the second direction (X direction shown in FIG. 2 ) and the third direction (Y direction shown in FIG. 2 ).
  • the push-down driving mechanism may be a motor or an air cylinder.
  • the push-down driving mechanism can drive the press-down seat 310 to move up and down, so that the press-down seat 310 can adjust its position in the first direction (direction Z shown in FIG. 2 ).
  • the push-down driving mechanism may also be a mobile platform.
  • the pressing driving mechanism can drive the pressing seat 310 to translate and lift, so that the pressing seat 310 can move in the first direction (Z direction shown in FIG. 2 ), the second direction (X direction shown in FIG. 2 ) and the third direction ( Figure 2 shows the Y direction) to adjust the position.
  • each set of support devices 100 there are two sets of support devices 100 , the two sets of support devices 100 can approach or move away from each other, and each set of support devices 100 places a battery module 10 .
  • the two battery modules 10 can float in the first direction respectively on the corresponding supporting device 100 , and the position adjustment of the battery modules 10 is more flexible and more practical.
  • each battery module 10 corresponds to a group of first lateral pressure devices 200 and a group of second lateral pressure devices 400 .
  • Two battery modules 10 share a set of pressing devices 300 .
  • the present application provides a welding positioning fixture
  • the welding positioning fixture includes two sets of supporting devices 100, two sets of first lateral pressing devices 200, one set of pressing devices 300 and two sets of The second lateral pressure device 400 .
  • a battery module 10 move the pressing mechanism to the second positioning surface 301 and place it on the top side 13 of the two battery modules 10, and the two battery modules 10 are in the first direction (Z direction shown in Figure 1) floating, so that the mounting ear 20 of each battery module 10 abuts against a first positioning surface 201 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种焊接定位夹具，焊接定位夹具包括支撑装置（100）、两组第一侧压装置（200）及下压装置（300），两个电池模组（10）沿第一方向浮动，两组第一侧压装置（200）分别压置于一电池模组（10）的第一侧（11），下压装置（300）用于沿第一方向定位电池模组（10）。其中，每一第一侧压装置（200）具有一第一定位面（201）。当两组第一侧压装置（200）的第一定位面（201）移动至同一预设高度，且第二定位面（301）压置于两个电池模组（10）的顶侧（13）时，两个电池模组（10）能在第一方向浮动，以使每一电池模组（10）的挂耳（20）抵接于一第一定位面（201）上。

Description

焊接定位夹具
交叉引用
本申请引用于2022年1月04日递交的名称为“焊接定位夹具”的第202220038446.3号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及动力电池技术领域，更具体的说，涉及一种焊接定位夹具。
背景技术
目前，新能源汽车的动力电池是通过将多个不同的电池模组组合在一起形成大模组结构，以满足汽车动力的需求。在装配时，先将两个电池模组焊接成双拼模组，再将多个双拼模组串联或并联或混联形成一个整体并容纳于箱体内。在双拼模组的成组过程中，需要将单个电池模组装配好后再将两个电池模组装配好，最后再进行焊接。由于每次装配时以电池模组的底部为定位基准，导致尺寸环较多，无法较好地保证电池模组的侧面的挂耳平面度，装配精度较低。
发明内容
有鉴于此，本申请公开一种焊接定位夹具。
一种焊接定位夹具，用于定位两个电池模组，每一电池模组的第一侧凸设有挂耳，焊接定位夹具包括支撑装置、两组第一侧压装置及下压装置，两个电池模组放置于支撑装置且能沿第一方向浮动，两组第一侧压装置分别压置于一电池模组的第一侧，并沿与第一方向垂直的第二方向定位电池模组，下压装置用于沿第一方向定位电池模组。其中，每一第一侧压装置具有一第一定位面，下压装置具有第二定位面。当两组第一侧压装置的第一定位面移动至同一预设高度，且第二定位面压置于两个电池模组的顶侧时，两个电池模组能在第一方向浮动，以使每一电池模组的挂耳抵接于一第一定位面上。上述的焊接定位夹具，支撑装置能承载电池模组，且电池模组能在第一方向浮动，以避免电池模组在第一方向受约束而无法抵接于第一定位面；以第一定位面为基准在第一方向定位两个电池模组的挂耳，较好地保证两个电池模组的挂耳的平面度，改善传统以电池模组底部为定位基准导致挂耳平面度无法满足装配要求的缺陷。
在其中一实施例中，支撑装置包括承载台及浮动机构，承载台设有容置槽，浮动机构设于容置槽的底壁且能沿第一方向弹性伸缩，电池模组容置于容置槽内且抵接于浮动机构。通过该设置，当下压装置压置于两个电池模组的顶侧时，电池模组在容置槽内能够上下浮动，从而抵接于第一定位面，实现电池模组挂耳的有效定位。
在其中一实施例中，每一第一侧压装置还具有垂直于第一定位面的第三定位面，第三定位面用于抵接电池模组的第一侧。通过该设置，利用第一侧压装置的第一定位面能够定位两个电池模组的挂耳，通过第一侧压装置的第三定位面能够沿第二方向定位两个电池模组，利于减少侧压装置的数量，节约空间且便于操作。
在其中一实施例中，第一侧压装置包括第一驱动机构及侧压座，第一驱动机构连接于侧压座并用于驱使侧压座平移运动和/或升降运动。通过驱使侧压座平移运动和/或升降运动，能够灵活调节第一定位面及第三定位面的位置。
在其中一实施例中，侧压座包括垂直连接的第一支杆及第二支杆，第二支杆与第一驱动机构连接，第一支杆的不同侧设有第一定位面及第三定位面。通过第一侧压装置的第三定位面能够沿第二方向定位两个电池模组，利于减少侧压装置的数量。
在其中一实施例中，第一支杆呈长方体状，第一定位面及第三定位面均呈平面。通过该设置，能更好地保证挂耳及电池模组的定位平面度。
在其中一实施例中，第二支杆的数量为多个，且各第二支杆并排间隔设于第一支杆。通过该设置，第一驱动机构驱使侧压座压置于电池模组时，便于压力均匀分布于各第二支杆。
在其中一实施例中，焊接定位夹具还包括两组第二侧压装置，第二侧压装置用于沿第三方向定位电池模组，第三方向与第一方向、第二方向垂直。通过该设置，能够在第三方向对两个电池模组定位，以防止电池模组挪移。
在其中一实施例中，第二侧压装置包括第二驱动机构、第一侧压块及第二侧压块，第二驱动机构用于驱使第一侧压块及第二侧压块在第三方向相对运动，第一侧压块及第二侧压块压置于电池模组的端侧。通过该设置，通过两个侧压块能够在第三方向对两个电池模组定位，以防止电池模组挪移。
在其中一实施例中，支撑装置的数量为两组，两组支撑装置能够互相靠近或远离，每组支撑装置放置有一电池模组，每一电池模组对应一组第一侧压装置及一组第二侧压装置。通过该设置，两个电池模组能在对应的支撑装置上分别在第一方向浮动，电池模组的位置调节更灵活，实用性更强。
在其中一实施例中，下压装置包括下压驱动机构及下压座，下压驱动机构用于驱使下压座平移运动和/或升降运动，第二定位面设于下压座的底部。通过下压驱动机构带动下压座运动，从而调节第二定位面的位置。
附图说明
图1为一实施例中焊接定位夹具的第一示意图；
图2为一实施例中焊接定位夹具的第二示意图；
图3为图2所示焊接定位夹具的俯视图；
图4为图2所示焊接定位夹具中支撑装置的示意图；
图5为图2所示焊接定位夹具中第一侧压装置的示意图。
附图标记：
10、电池模组；11、第一侧；12、端侧；13、顶侧；20、挂耳；100、支撑装置；110、承载台；111、容置槽；120、浮动机构；200、第一侧压装置；201、第一定位面；202、第三定位面；210、第一驱动机构；220、侧压座；221、第一支杆；222、第二支杆；300、下压装置；301、第二定位面；310、下压座；400、第二侧压装置；410、第一侧压块；420、第二侧压块。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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申请和简化描述，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申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，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，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据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“上”或“下”可以 是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，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”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
随着新能源汽车的普及和推广，新能源汽车的安全可靠性日益引起人们的关注和重视。动力电池为一种可充电的电池是新能源汽车的动力来源，在新能源汽车领域中被广泛应用。
目前，新能源汽车的动力电池是通过将多个不同的电池模组组合在一起形成大模组结构，以满足汽车动力的需求。电池包括箱体和电池模组，箱体用于容纳电池模组。可以是多个电池单体先串联或并联或混联组成电池模组，多个电池模组再串联或并联或混联形成一个整体，并容纳于箱体内。也可以是所有电池单体之间直接串联或并联或混联在一起，再将所有电池单体构成的整体容纳于箱体内。
在本申请中，采用的是先将两个电池模组焊接成双拼模组，再将多个双拼模组串联或并联或混联形成一个整体并容纳于箱体内。在双拼模组的成组过程中，需要将单个电池模组装配好后再将两个电池模组装配好，最后再进行焊接。由于每次装配时以电池模组的底部为定位基准，导致尺寸环较多，无法较好地保证电池模组的侧面的挂耳平面度，装配精度较低。
基于上述考虑，发明人经深入研究，设计了一种焊接定位夹具，能够提高双拼模组的装配精度，较好地保证双拼模组的挂耳的平面度。
请参考图1，一实施例中的焊接定位夹具用于定位两个电池模组10，每一电池模组10的第一侧11凸设有挂耳20。
结合图2所示，上述焊接定位夹具包括支撑装置100、两组第一侧压装置200及下压装置300。两个电池模组10放置于支撑装置100且能沿第一方向浮动，下压装置300用于沿第一方向定位电池模组10，两组第一侧压装置200分别压置于一电池模组10的第一侧11并沿第二方向定位电池模组10，第二方向与第一方向垂直。
其中，每一第一侧压装置200具有一第一定位面201，下压装置300具有第二定位面301；结合图3所示，当两组第一侧压装置200的第一定位面201移动至同一预设高度，且第二定位面301压置于两个电池模组10的顶侧13时，两个电池模组10能在第一方向浮动，以使每一电池模组10的挂耳20抵接于一第一定位面201上。
需说明的是，通过上述焊接定位夹具定位两个电池模组10后，需要将两个电池焊接为双拼模组，且双拼模组的相对两侧分别具有挂耳20，双拼模组通过挂耳20装配于其他部件。由于装配要求，需保证双拼模组两侧挂耳20的平面度，也即双拼模组两侧挂耳20位于同一高度位置，以避免影响后续装配工序及装配精度。
通过上述设置，支撑装置100能承载电池模组10，且电池模组10能在第一方向浮动，以避免电池模组10在第一方向受约束而无法抵接于第一定位面201；以第一定位面201为基准在第一方向定位两个电池模组10的挂耳20，较好地保证两个电池模组10的挂耳20的平面度，改善传统以电池模组10底部为定位基准导致挂耳20的平面度无法满足装配要求的缺陷。
此处，第一方向为图1所示Z方向，第二方向为图1所示X方向。
为了保证第一定位面201移动位置的准确性，如图1示出的实施例中，上述焊接定位夹具还包括电性连接的传感模块及控制器(图未示)。传感模块包括第一传感器，第一传感器设于第一侧压装置200并用于检测第一侧压装置200的位置信息，控制器根据位置信息控制第一侧压装置200移动。
通过该设置，有效保证两组第一侧压装置200的第一定位面201移动至同一预设高度，提高定位准确性。
如图1示出的实施例中，每一电池模组10包括第一侧11、端侧12、顶侧13、第二侧及底侧(图未示)。第一侧11与第二侧相对设置，端侧12垂直于第一侧11、第二侧，端侧12数量为二且二个端侧12相对设置。
该实施例中，如图1及图2所示，支撑装置100支撑于电池模组10的底侧，第一侧压装置200压置于第一侧11以使两个电池模组10的第二侧抵接，两个电池模组10的端侧12需要焊接。
在具体实施方式中，设于第一侧11的挂耳20数量可以为多个，且多个挂耳20沿第三方向并排且间隔设置。此处，第三方向为图1所示Y方向，第三方向与第一方向、第二方向均垂直。
如图4所示，支撑装置100包括承载台110及浮动机构120，承载台110设有容置槽111，浮动机构120设于容置槽111的底壁且能沿第一方向弹性伸缩，电池模组10容置于容置槽111内且抵接于浮动机构120。
通过该设置，浮动机构120弹性伸缩能够使电池模组10在第一方向改变位置，当下压装置300压置于两个电池模组10的顶侧13时，电池模组10在容置槽111内能够上下浮动，从而抵接于第一定位面201，实现电池模组10挂耳20的有效定位，避免因电池模组10位置固定而无法使挂耳20的底面抵接于第一定位面201的情况。
在具体实施方式中，浮动机构120可以为弹簧、弹性板或弹片。下压装置300压置于 电池模组10的顶侧13时，浮动机构120弹性伸缩以改变电池模组10的底侧在第一方向(图4所示Z方向)上的位置。
在本实施方式中，如图4所示，承载台110自带浮动机构120，利于简化装配步骤及装配结构。在其他实施方式中，浮动机构120还可以可拆卸地装配于承载台110，浮动机构120不需要使用时可卸除，利于扩大支撑装置100的适用范围。
发明人注意到，两组第一侧压装置200除了用于有效定位挂耳20，还需用于沿第二方向(图1所示X方向)有效定位两个电池模组10。基于上述考虑，如图1所示，每一第一侧压装置200还具有垂直于第一定位面201的第三定位面202，第三定位面202用于抵接电池模组10的第一侧11。
通过该设置，利用第一侧压装置200的第一定位面201能够定位两个电池模组10的挂耳20，通过第一侧压装置200的第三定位面202能够沿第二方向定位两个电池模组10，利于减少侧压装置的数量，节约空间且便于操作。
在具体实施方式中，如图1所示，一组第一侧压装置200中的第三定位面202作为定位基准侧，另一组第一侧压装置200中的第三定位面202作为定位活动侧。
可以理解的是，结合图3所示，在沿第二方向(图3所示X方向)有效定位两个电池模组10前，可以先移动两组第一侧压装置200至二者的第一定位面201位于同一预设高度后，再将一组第一侧压装置200沿第二方向移动至第一预设位置并保持不动，最后将另一组第一侧压装置200沿第二方向移动至第三定位面202抵接于电池模组10的第一侧11，以使两组第一侧压装置200共同压紧两个电池模组10。
其中，第一侧压装置200的移动可以由控制器根据第一传感器反馈的位置信息控制。
如图1所示的实施方式中，第一侧压装置200包括第一驱动机构210及侧压座220，第一驱动机构210连接于侧压座220并用于驱使侧压座220平移运动和/或升降运动。
该实施方式中，结合图5所示，第一定位面201及第三定位面202均设于侧压座220。通过驱使侧压座220平移运动和/或升降运动，能够灵活调节第一定位面201及第三定位面202的位置。
在一实施方式中，第一驱动机构210可以为电机或气缸。第一驱动机构210能够驱使侧压座220平移运动，以使侧压座220在第二方向(图1所示X方向)及第三方向(图1所示Y方向)调整位置。
在另一实施方式中，第一驱动机构210可以为电机或气缸。第一驱动机构210能够驱使侧压座220升降运动，以使侧压座220在第一方向(图1所示Z方向)调整位置。
在其他实施方式中，第一驱动机构210还可以为移动平台。第一驱动机构210能够驱使侧压座220平移及升降运动，以使侧压座220在第一方向(图1所示Z方向)、第二方向(图1所示X方向)及第三方向(图1所示Y方向)调整位置。
如图1及图5所示的实施方式中，侧压座220包括垂直连接的第一支杆221及第二支杆222，第二支杆222与第一驱动机构210连接，第一支杆221的不同侧设有第一定位面201及第三定位面202。
该实施方式中，如图5所示，第一定位面201设于第一支杆221的顶侧，第三定位面202设于第一支杆221朝向电池模组10的一侧。
在本实施方式中，第一支杆221呈长方体状，第一定位面201与第三定位面202均呈平面，以更好地保证挂耳20及电池模组10的定位平面度。
在本实施方式中，如图5所示，第一支杆221及第二支杆222为一体成型结构，整体性好且机械强度较高。在其他实施方式中，第一支杆221及第二支杆222还可以为分体式结构，二者可以通过铆接或焊接方式连接。
在本实施方式中，如图5所示，第二支杆222的数量为多个，且各第二支杆222并排间隔设于第一支杆221。通过该设置，第一驱动机构210驱使侧压座220压置于电池模组10时，便于压力均匀分布于各第二支杆222，利于定位。
在本实施方式中，如图5所示，第二支杆222呈长方体状。在其他实施方式中，第二支杆222还可以呈柱状或其他不规则形状。
在本实施方式中，如图5所示，每一第二支杆222上设有一第一驱动机构210。在其他实施方式中，还可以仅设置一个第一驱动机构210，通过同一第一驱动机构210驱使多个第二支杆222运动。
发明人注意到，如图3所示，除了在第二方向(图3所示X方向)对两个电池模组10定位，还需在第三方向(图3所示Y方向)对两个电池模组10定位，以防止电池模组10挪移。
基于上述考虑，如图2及图3所示的实施例中，上述焊接定位夹具还包括两组第二侧压装置400，第二侧压装置400用于沿第三方向定位电池模组10。
此处需说明的是，如图1所示，每组第二侧压装置400定位一个电池模组10。由于两个电池的端侧12需要焊接，两组第二侧压装置400相邻设置且应在二者相邻处预留避让空间，当两个电池模组10通过上述焊接定位夹具定位时，焊接装置的激光能够由避让空间照射至两个电池模组10的端侧12，以实现两个电池模组10的焊接。
该实施例中，如图3所示，第二侧压装置400包括第二驱动机构、第一侧压块410及第二侧压块420，第二驱动机构用于驱使第一侧压块410及第二侧压块420在第三方向相对运动。
在具体实施方式中，如图3所示，第一侧压块410作为定位基准侧，第二侧压块420作为定位活动侧。通过将第一侧压块410移动至预设位置后保持不动，再移动第二侧压块420直至第二侧压块420抵接定位电池模组10。相应地，也可以将第二侧压块420作为定位基准 侧，第一侧压块410作为定位活动侧。
在具体实施方式中，第二驱动机构为电机或气缸。
可以理解的是，传感模块还包括第二传感器(图未示)，第二传感器设于第二侧压装置400并用于检测第一侧压块410及第二侧压块420的位置信息，控制器根据位置信息控制第一侧压块410及第二侧压块420移动。
在本实施方式中，如图2所示，由于电池模组10的端侧12呈平面，第一侧压块410及第二侧压块420也呈平板状，以更好地定位电池模组10。
如图2所示的实施例中，下压装置300包括下压驱动机构(图未示)及下压座310，下压驱动机构用于驱使下压座310平移运动和/或升降运动。
该实施例中，如图2所示，第二定位面301设于所述下压座310的底部。通过下压驱动机构带动下压座310运动，从而改变第二定位面301的位置。
在本实施方式中，如图2所示，由于电池模组10的顶侧13呈平面，第二定位面301也呈平面。
在一实施方式中，下压驱动机构可以为电机或气缸。下压驱动机构能够驱使下压座310平移运动，以使下压座310在第二方向(图2所示X方向)及第三方向(图2所示Y方向)调整位置。
在另一实施方式中，下压驱动机构可以为电机或气缸。下压驱动机构能够驱使下压座310升降运动，以使下压座310在第一方向(图2所示Z方向)调整位置。
在其他实施方式中，下压驱动机构还可以为移动平台。下压驱动机构能够驱使下压座310平移及升降运动，以使下压座310在第一方向(图2所示Z方向)、第二方向(图2所示X方向)及第三方向(图2所示Y方向)调整位置。
如图1示出的实施例中，支撑装置100的数量为两组，两组支撑装置100能够互相靠近或远离，每组支撑装置100放置有一电池模组10。
通过该设置，两个电池模组10能在对应的支撑装置100上分别在第一方向浮动，电池模组10的位置调节更灵活，实用性更强。
该实施例中，每一电池模组10对应一组第一侧压装置200及一组第二侧压装置400。两个电池模组10共用一组下压装置300。
根据本申请的一些实施例，参见图1，本申请提供了一种焊接定位夹具，焊接定位夹具包括两组支撑装置100、两组第一侧压装置200、一组下压装置300及两组第二侧压装置400。每组支撑装置100上放置一电池模组10，并通过第二侧压装置400在第三方向(图1所示Y方向)定位电池模组10，使两组支撑装置100移动并互相靠拢；移动两组第一侧压装置200至二者的第一定位面201为同一预设高度后，移动两组第一侧压装置200并在第二方向(图1所示X方向)压紧两个电池模组10；移动下压机构至第二定位面301压置于两个所 述电池模组10的顶侧13，两个电池模组10在第一方向(图1所示Z方向)浮动，以使每一电池模组10的挂耳20抵接于一第一定位面201上。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (11)

  1. 一种焊接定位夹具，用于定位两个电池模组(10)，每一所述电池模组(10)的第一侧(11)凸设有挂耳(20)，其特征在于，所述焊接定位夹具包括：
    支撑装置(100)，两个所述电池模组(10)放置于所述支撑装置(100)且能沿第一方向浮动；
    两组第一侧压装置(200)，分别压置于一所述电池模组(10)的第一侧(11)，并沿与所述第一方向垂直的第二方向定位所述电池模组(10)；
    下压装置(300)，用于沿所述第一方向定位所述电池模组(10)；
    其中，每一所述第一侧压装置(200)具有一第一定位面(201)，所述下压装置(300)具有第二定位面(301)；当两组所述第一侧压装置(200)的所述第一定位面(201)移动至同一预设高度，且所述第二定位面(301)压置于两个所述电池模组(10)的顶侧(13)时，两个所述电池模组(10)能在所述第一方向浮动，以使每一所述电池模组(10)的挂耳(20)抵接于一所述第一定位面(201)上。
  2. 根据权利要求1所述的焊接定位夹具，其特征在于，所述支撑装置(100)包括承载台(110)及浮动机构(120)，所述承载台(110)设有容置槽(111)，所述浮动机构(120)设于所述容置槽(111)的底壁且能沿所述第一方向弹性伸缩，所述电池模组(10)容置于所述容置槽(111)内且抵接于所述浮动机构(120)。
  3. 根据权利要求1所述的焊接定位夹具，其特征在于，每一所述第一侧压装置(200)还具有垂直于所述第一定位面(201)的第三定位面(202)，所述第三定位面(202)用于抵接所述电池模组(10)的第一侧(11)。
  4. 根据权利要求3所述的焊接定位夹具，其特征在于，所述第一侧压装置(200)包括第一驱动机构(210)及侧压座(220)，所述第一驱动机构(210)连接于所述侧压座(220)并用于驱使所述侧压座(220)平移运动和/或升降运动。
  5. 根据权利要求4所述的焊接定位夹具，其特征在于，所述侧压座(220)包括垂直连接的第一支杆(221)及第二支杆(222)，所述第二支杆(222)与所述第一驱动机构(210)连接，所述第一支杆(221)的不同侧设有所述第一定位面(201)及所述第三定位面(202)。
  6. 根据权利要求5所述的焊接定位夹具，其特征在于，所述第一支杆(221)呈长方体状，所述第一定位面(201)及所述第三定位面(202)均呈平面。
  7. 根据权利要求5-6任一项所述的焊接定位夹具，其特征在于，所述第二支杆(222)的数量为多个，且各所述第二支杆(222)并排间隔设于所述第一支杆(221)。
  8. 根据权利要求1-7任一项所述的焊接定位夹具，其特征在于，所述焊接定位夹具还包 括两组第二侧压装置(400)，所述第二侧压装置(400)用于沿第三方向定位所述电池模组(10)，所述第三方向与所述第一方向、所述第二方向垂直。
  9. 根据权利要求8所述的焊接定位夹具，其特征在于，所述第二侧压装置(400)包括第二驱动机构、第一侧压块(410)及第二侧压块(420)，所述第二驱动机构用于驱使所述第一侧压块(410)及所述第二侧压块(420)在所述第三方向相对运动，所述第一侧压块(410)及所述第二侧压块(420)压置于所述电池模组(10)的端侧(12)。
  10. 根据权利要求8-9任一项所述的焊接定位夹具，其特征在于，所述支撑装置(100)的数量为两组，两组所述支撑装置(100)能够互相靠近或远离，每组所述支撑装置(100)放置有一所述电池模组(10)，每一电池模组(10)对应一组所述第一侧压装置(200)及一组所述第二侧压装置(400)。
  11. 根据权利要求1-10任一项所述的焊接定位夹具，其特征在于，所述下压装置(300)包括下压驱动机构及下压座(310)，所述下压驱动机构用于驱使所述下压座(310)平移运动和/或升降运动，所述第二定位面(301)设于所述下压座(310)的底部。
PCT/CN2022/142599 2022-01-04 2022-12-28 焊接定位夹具 WO2023131018A1 (zh)

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