Tool for welding battery cell tab of soft knife module

Abstract

The utility model discloses a tool for welding a battery cell tab of a soft knife module. The tool comprises a tool main body, a battery cell placing and positioning mechanism and a tab bending and jacking mechanism which is arranged close to one end part of the battery cell placing and positioning mechanism, the tab bending and jacking mechanism drives the tab positioned at the end part of the battery cell placing and positioning mechanism to be bent in a jacking manner of a jacking cylinder; and the tool further comprises a turnover mechanism for driving the battery cell placing and positioning mechanism to turn over. According to the tool disclosed by the utility model, the battery cell placing and positioning mechanisms are used for accommodating a plurality of flexibly-packaged battery cells, the end part is provided with the tab bending and jacking mechanism for bending tail tabs after the head tabs and the tail tabs of the internal flexibly-packaged battery cells are welded, and then the two groups of battery cell placing and positioning mechanisms are overturned by utilizing the overturning mechanism so as to finally complete the welding of the tail tabs; the tool is novel in overall structure, high in automation degree and capable of improving the electrode lug welding precision and guaranteeing the grouping qualification rate of the soft cutting die sets.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile power batteries, in particular to a tool for welding pole ears of soft knife module batteries. Background Art

[0002] The battery pack is an important component of new energy technology, providing energy and power for the storage of new energy vehicles; as an important form of power battery pack, the soft knife module has the characteristics of flexible structure, high capacity and high space utilization. The main component of the soft knife module is the soft-pack battery cell, but in the process of soft knife module assembly, the welding of the pole ear of the soft-pack battery cell is a key difficulty. The pole ear connection requires high precision, high structural strength, large current flow area and special-shaped welding of the pole ear, so special process technology, welding equipment and tooling are required; therefore, how to ensure the qualified rate of the pole ear welding of the soft-pack battery cell at this stage is an important indicator of the soft knife module assembly, and it is also the key research direction of technical personnel in this field.

[0003] Therefore, based on the above technical problems, technicians in this field urgently need to develop a tooling for welding the tabs of soft knife module battery cells. Utility Model Content

[0004] The utility model aims to provide a tool for welding the tabs of a soft-knife module battery cell. The tool has a novel structure and can realize the welding of the first and tail tabs of a soft-pack battery cell, and can also realize the lifting and bending operations of the tail tab. The overall automation of the tool is high, and the quality requirements of the soft-knife module assembly can be guaranteed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model discloses a tool for welding a flexible knife module battery core tab, the tool comprising:

[0007] Tool body;

[0008] A cell placement and positioning mechanism integrated in the tooling body, wherein two sets of the cell placement and positioning mechanisms are symmetrically arranged on the tooling body, and the cell placement and positioning mechanism has a receiving groove capable of receiving a plurality of soft-pack cells, and the first and tail tabs of the soft-pack cells in the receiving groove are close to each other; and

[0009] A tab bending and lifting mechanism disposed near one end of the battery cell placement and positioning mechanism;

[0010] The tab bending and lifting mechanism drives the tab located at the end of the battery cell placement and positioning mechanism to bend by lifting with a lifting cylinder;

[0011] The tooling also includes:

[0012] A flipping mechanism drives the battery cell placement and positioning mechanism to flip.

[0013] Furthermore, the battery cell placement and positioning mechanism extends along the length direction of the tooling body;

[0014] Each group of the battery cell placement and positioning mechanisms is equipped with multiple groups of positioning support structures;

[0015] The battery cell placement and positioning mechanism comprises:

[0016] A cell positioning platform, wherein the cell positioning platform is provided with the receiving grooves along its length direction, and the soft-pack cells are sequentially placed in the receiving grooves;

[0017] A positioning groove is provided at the position where the battery cell positioning table cooperates with the pole ears of two adjacent soft-pack battery cells, and the positioning support structure is located directly below the positioning groove. After the battery cell placement and positioning mechanism is flipped downward by the flipping mechanism, the positioning support structure is embedded in the positioning groove and supports the corresponding pole ear.

[0018] Furthermore, the positioning support structure includes:

[0019] Bottom cylinder;

[0020] A positioning block connected to the cylinder rod of the bottom cylinder to be driven to rise and fall by the bottom cylinder;

[0021] A positioning block connecting plate is connected between the positioning block and the cylinder rod of the bottom cylinder, and the cylinder rod of the bottom cylinder drives the positioning block connecting plate and the positioning block to rise and fall;

[0022] The positioning block can be embedded in the positioning groove and support the corresponding pole lug.

[0023] Furthermore, the tab bending and lifting mechanism includes:

[0024] Tab clamping and positioning structure; and

[0025] A tab lifting structure matched with the tab clamping and positioning structure;

[0026] The tab clamping and positioning structure has a positioning rod that can move horizontally to adjust the relative position of the tab located at the tail of the battery cell placement and positioning mechanism;

[0027] The pole tab lifting structure is located at the end of the battery cell placement and positioning mechanism, and the pole tab lifting structure drives a lifting plate through a lifting cylinder to bend the pole tab at that location.

[0028] Furthermore, the tab clamping and positioning structure includes:

[0029] Horizontal movement cylinder;

[0030] A support frame connected to the cylinder rod of the horizontal moving cylinder to achieve horizontal position adjustment; and

[0031] Two positioning rods are integrated at the upper end of the support frame and extend toward one side of the pole ear at the tail of the battery cell placement and positioning mechanism, and a certain gap is reserved between the two positioning rods, which is the positioning space of the pole ear.

[0032] Furthermore, the tab lifting structure includes:

[0033] The lifting cylinder; and

[0034] A lifting plate connected to the cylinder rod of the lifting cylinder to control the lifting;

[0035] The lifting cylinder drives the lifting plate to rise to bend the pole ear located in the positioning space.

[0036] Furthermore, the flipping mechanism comprises:

[0037] A bearing integrated into the tooling body via a bearing seat; and

[0038] A transmission rod connected to the inner rings of the bearings on both sides, wherein the transmission rod is connected to an external driving device to drive the transmission rod to rotate;

[0039] The transmission rod is provided with three connecting pieces at intervals along the length direction thereof, and the transmission rod drives the cell positioning platform to flip through the connecting pieces and the side surfaces of the cell positioning platform.

[0040] Furthermore, after the two groups of flipping mechanisms drive the corresponding battery cell positioning platforms to flip upward, the two pole ears at the tails of the two groups of battery cell positioning platforms are close to each other.

[0041] In the above technical solution, the utility model provides a tool for welding the tabs of a soft-knife module battery cell, which has the following beneficial effects:

[0042] The tooling of the utility model accommodates multiple soft-pack battery cells through a battery cell placement and positioning mechanism, and a pole ear bending and lifting mechanism is arranged at the end to bend the tail pole ear after the first and tail pole ears of the internal soft-pack battery cell are welded, and then the two groups of battery cell placement and positioning mechanisms are flipped by the flipping mechanism to finally complete the welding of the tail pole ear. The overall structure of the tooling is novel and the degree of automation is high, which can improve the welding accuracy of the pole ears and ensure the qualified rate of the soft knife die assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0044] Figure 1 A structural schematic diagram of a first working state of a tool for welding a tab of a battery cell of a soft-knife module provided by an embodiment of the utility model;

[0045] Figure 2 A schematic structural diagram of a second working state of a tool for welding a tab of a battery cell of a soft-knife module provided by an embodiment of the utility model;

[0046] Figure 3 A schematic structural diagram of a positioning support mechanism of a tooling for welding a tab of a soft-knife module battery cell provided in an embodiment of the utility model;

[0047] Figure 4 A schematic diagram of the structure of a tab bending and lifting mechanism of a tooling for welding tabs of a battery cell of a soft-knife module provided in an embodiment of the utility model;

[0048] Figure 5 A schematic diagram of the structure of a flipping mechanism of a tooling for welding a tab of a battery cell of a soft-knife module provided in an embodiment of the utility model;

[0049] Figure 6 A structural schematic diagram of the working state of a tab clamping and positioning structure and a tab lifting structure of a tooling for welding tabs of a soft knife module battery cell provided in an embodiment of the utility model.

[0050] Description of reference numerals:

[0051] 1. Tooling body; 2. Cell placement and positioning mechanism; 3. Soft-pack cell; 4. Positioning support mechanism; 5. Tab clamping and positioning structure; 6. Tab lifting structure; 7. Flipping mechanism;

[0052] 201, battery cell positioning platform; 202, receiving slot; 203, positioning groove;

[0053] 301, ear;

[0054] 401, bottom cylinder; 402, positioning block; 403, positioning block connecting plate;

[0055] 501, horizontal moving cylinder; 502, support frame; 503, positioning rod;

[0056] 601, lifting cylinder; 602, lifting plate;

[0057] 701, bearing seat; 702, bearing; 703, transmission rod; 704, connecting piece. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] See also Figures 1 to 6 As shown;

[0060] This embodiment discloses a tool for welding the tabs of a soft-knife module battery cell, the tool comprising:

[0061] Tool body 1;

[0062] A battery cell placement and positioning mechanism 2 integrated in the tooling body 1, wherein two sets of battery cell placement and positioning mechanisms 2 are symmetrically arranged on the tooling body 1, and the battery cell placement and positioning mechanism 2 has a receiving groove 202 capable of accommodating a plurality of soft-pack battery cells 3, and the first and tail tabs 301 of the soft-pack battery cells 3 located in the receiving groove 202 are close to each other; and

[0063] A tab bending and lifting mechanism disposed near one end of the cell placement and positioning mechanism 2;

[0064] The tab bending and lifting mechanism drives the tab 301 at the end of the cell placement and positioning mechanism 2 to bend by lifting the lifting cylinder 601;

[0065] The tooling also includes:

[0066] A flipping mechanism 7 drives the battery cell placement and positioning mechanism 2 to flip.

[0067] Specifically, the present embodiment discloses a tool suitable for welding the tabs of a soft-knife module battery cell, which integrates a battery cell placement and positioning mechanism 2, a tab bending and lifting mechanism, and a flipping mechanism 7 on the tool body 1; wherein each group of battery cell placement and positioning mechanisms 2 places a plurality of soft-pack battery cells 3 through a receiving groove 202, and the first and last tabs 301 of adjacent soft-pack battery cells 3 are close to each other to facilitate subsequent welding. The tab bending and lifting mechanism is located at the end of the battery cell placement and positioning mechanism 2, and is close to the tab 301 at the tail, which is mainly used to bend the tab 301 at the tail after the first and last tabs 301 of the internal soft-pack battery cell 3 are welded. After bending, the two groups of battery cell placement and positioning mechanisms 2 are flipped by the flipping mechanism 7, and then the tail tab 301 is welded.

[0068] Preferably, the battery cell placement and positioning mechanism 2 of this embodiment extends along the length direction of the tooling body 1;

[0069] Each set of battery cell placement and positioning mechanisms 2 is equipped with multiple sets of positioning support structures 4;

[0070] The battery cell placement and positioning mechanism 2 comprises:

[0071] A cell positioning platform 201, wherein the cell positioning platform 201 is formed with a receiving groove 202 along its length direction, and the soft-packed cells 3 are sequentially placed in the receiving groove 202;

[0072] A positioning groove 203 is provided at the position where the battery cell positioning plate 201 cooperates with the pole ears 301 of two adjacent soft-pack battery cells 3, and the positioning support structure 4 is located directly below the positioning groove 203. After the battery cell placement and positioning mechanism 2 is flipped downward by the flipping mechanism 7, the positioning support structure 4 is embedded in the positioning groove 203 and supports the corresponding pole ear 301.

[0073] This embodiment further defines the structure of the cell placement and positioning mechanism 2 and the coordination relationship between the positioning support structure 4 and the cell placement and positioning mechanism 2; the cell placement and positioning mechanism 2 of this embodiment includes a cell positioning platform 201, the cell positioning platform 201 accommodates a plurality of soft-pack cells 3 through a receiving groove 202, and the tabs 301 of the soft-pack cells 3 located at the tail of the cell positioning platform 201 extend to the outside of the cell positioning platform 201; the cell positioning platform 201 of this embodiment is provided with a positioning groove 203 according to the positions of two adjacent tabs 301, and cooperates with the positioning block 402 of the positioning support structure 4 below to realize the support of the corresponding tab 301. In addition, as an extended implementation method, the cell placement and positioning mechanism 2 of this embodiment can be designed with a vacuum adsorption system, which uses the vacuum adsorption function to fix the soft-pack cells 3, and then uses an external laser welding device to realize the welding of the tabs 301 of the soft-pack cells 3.

[0074] As a preferred implementation, the positioning support structure 4 of this embodiment includes:

[0075] Bottom cylinder 401;

[0076] A positioning block 402 connected to the cylinder rod of the bottom cylinder 401 to be driven to rise and fall by the bottom cylinder 401;

[0077] A positioning block connecting plate 403 is connected between the positioning block 402 and the cylinder rod of the bottom cylinder 401, and the cylinder rod of the bottom cylinder 401 drives the positioning block connecting plate 403 and the positioning block 402 to rise and fall;

[0078] The positioning block 402 can be embedded in the positioning groove 203 and support the corresponding tab 301 .

[0079] The positioning support structure 4 of this embodiment includes a bottom cylinder 401 and a positioning block 402. The bottom cylinder 401 drives the positioning block connecting plate 403 and the positioning block 402 to rise and fall through a cylinder rod, and the positioning block 403 of this embodiment can be embedded in the corresponding positioning groove 203 and support the corresponding pole ear 301 and provide conditions for welding operations.

[0080] Preferably, the tab bending and lifting mechanism of this embodiment includes:

[0081] Tab clamping and positioning structure 5; and

[0082] A tab lifting structure 6 cooperating with the tab clamping and positioning structure 5;

[0083] The tab clamping and positioning structure 5 has a positioning rod 503 that can move horizontally to adjust the relative position of the tab 301 located at the tail of the battery cell placement and positioning mechanism 2;

[0084] The tab lifting structure 6 is located at the end of the cell placement and positioning mechanism 2 , and the tab lifting structure 6 drives the lifting plate 602 through the lifting cylinder 601 to bend the tab 301 there.

[0085] The tab clamping and positioning structure 5 of this embodiment includes:

[0086] Horizontal movement cylinder 501;

[0087] A support frame 502 connected to the cylinder rod of the horizontal moving cylinder 501 to achieve horizontal position adjustment; and

[0088] Two positioning rods 503 are integrated at the upper end of the support frame 502 and extend toward one side of the pole ear 301 located at the tail of the battery cell placement and positioning mechanism 2 , and a certain gap is reserved between the two positioning rods 503 , which is the positioning space of the pole ear 301 .

[0089] Secondly, the tab lifting structure 6 of this embodiment includes:

[0090] Lifting cylinder 601; and

[0091] A lifting plate 602 connected to the cylinder rod of the lifting cylinder 601 to control the lifting;

[0092] The lifting cylinder 601 drives the lifting plate 602 to rise to bend the pole ear 301 located in the positioning space.

[0093] The present embodiment further defines the composition of the tab bending and lifting mechanism, which is divided into two parts: a tab clamping and positioning structure 5 and a tab lifting structure 6, wherein the tab clamping and positioning structure 5 is located on the side of the tail tab 301, and the tab lifting mechanism 6 is located directly below the tail tab 301; the tab clamping and positioning structure 5 can limit the tail tab 301 between the two positioning rods 503 by moving the horizontal moving cylinder 501, and then, the tab lifting structure 6 drives the lifting plate 602 to rise through the lifting cylinder 601 to bend the tail tab 301.

[0094] Preferably, the turning mechanism 7 of this embodiment includes:

[0095] A bearing 702 integrated into the tool body 1 via a bearing seat 701; and

[0096] A transmission rod 703 connected to the inner rings of the bearings 702 on both sides, the transmission rod 703 is connected to an external driving device to drive the transmission rod 703 to rotate;

[0097] The transmission rod 703 is provided with three connecting pieces 704 at intervals along the length direction thereof. The transmission rod 703 drives the cell positioning platform 201 to flip over through the connecting pieces 704 and the side surface of the cell positioning platform 201 .

[0098] After the two groups of flipping mechanisms 7 of the present embodiment drive the corresponding battery cell positioning plates 201 to flip upward, the two pole ears 301 at the tails of the two groups of battery cell positioning plates 201 are close to each other.

[0099] In the above technical solution, the utility model provides a tool for welding the tabs of a soft-knife module battery cell, which has the following beneficial effects:

[0100] The tooling of the utility model accommodates a plurality of soft-pack battery cells 3 through a battery cell placement and positioning mechanism 2, and a pole ear bending and lifting mechanism is arranged at the end to bend the tail pole ear 301 after the first and tail pole ears 301 of the internal soft-pack battery cells 3 are welded, and then the flipping mechanism 7 is used to flip the two groups of battery cell placement and positioning mechanisms 2 to finally complete the welding of the tail pole ear 301. The overall structure of the tooling is novel and the degree of automation is high, which can improve the welding accuracy of the pole ear 301 and ensure the qualified rate of the soft knife die assembly.

[0101] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tool for welding the tabs of a soft-knife module battery cell, characterized in that: The tooling comprises: Tool body (1); A cell placement and positioning mechanism (2) integrated in the tooling body (1), wherein two sets of the cell placement and positioning mechanism (2) are symmetrically arranged on the tooling body (1), and the cell placement and positioning mechanism (2) has a receiving groove (202) capable of receiving a plurality of soft-packed cells (3), and the first and last pole ears (301) of the soft-packed cells (3) located in the receiving groove (202) are close to each other; and A tab bending and lifting mechanism disposed near one end of the battery cell placement and positioning mechanism (2); The tab bending and lifting mechanism drives the tab (301) located at the end of the battery cell placement and positioning mechanism (2) to bend by lifting the tab with a lifting cylinder (601); The tooling also includes: A turning mechanism (7) for driving the battery cell placement and positioning mechanism (2) to turn over.

2. A tool for welding the tabs of a soft-knife module battery cell according to claim 1, characterized in that: The battery cell placement and positioning mechanism (2) extends along the length direction of the tooling body (1); Each group of the battery cell placement and positioning mechanisms (2) is equipped with multiple groups of positioning support structures (4); The battery cell placement and positioning mechanism (2) comprises: A cell positioning platform (201), wherein the cell positioning platform (201) is provided with the accommodation groove (202) along its length direction, and the soft-pack cell (3) is sequentially placed in the accommodation groove (202); A positioning groove (203) is provided at a position where the cell positioning platform (201) cooperates with the pole ears (301) of two adjacent soft-pack cell (3), and the positioning support structure (4) is located directly below the positioning groove (203). After the cell placement and positioning mechanism (2) is flipped downward by the flipping mechanism (7), the positioning support structure (4) is embedded in the positioning groove (203) and supports the corresponding pole ear (301).

3. A tool for welding the tabs of a soft-knife module battery cell according to claim 2, characterized in that: The positioning support structure (4) comprises: Bottom cylinder (401); A positioning block (402) connected to the cylinder rod of the bottom cylinder (401) to drive the bottom cylinder (401) to lift and lower; A positioning block connecting plate (403) is connected between the positioning block (402) and the cylinder rod of the bottom cylinder (401), and the cylinder rod of the bottom cylinder (401) drives the positioning block connecting plate (403) and the positioning block (402) to rise and fall; The positioning block (402) can be embedded in the positioning groove (203) and support the corresponding pole lug (301).

4. A tool for welding the tabs of a soft-knife module battery cell according to claim 2, characterized in that: The tab bending and lifting mechanism comprises: A tab clamping and positioning structure (5); and A tab lifting structure (6) matched with the tab clamping and positioning structure (5); The tab clamping and positioning structure (5) has a positioning rod (503) that can move horizontally to adjust the relative position of the tab (301) located at the tail of the battery cell placement and positioning mechanism (2); The pole tab lifting structure (6) is located at the end of the battery cell placement and positioning mechanism (2), and the pole tab lifting structure (6) drives the lifting plate (602) through the lifting cylinder (601) to bend the pole tab (301) at that location.

5. A tool for welding the tabs of a soft-knife module battery cell according to claim 4, characterized in that: The tab clamping and positioning structure (5) comprises: Horizontal movement cylinder (501); A support frame (502) connected to the cylinder rod of the horizontal moving cylinder (501) to achieve horizontal position adjustment; and Two positioning rods (503) are integrated at the upper end of the support frame (502) and extend toward one side of the pole lug (301) located at the tail of the battery cell placement and positioning mechanism (2), and a certain gap is reserved between the two positioning rods (503), and the gap is the positioning space of the pole lug (301).

6. A tool for welding the tabs of a soft-knife module battery cell according to claim 5, characterized in that: The tab lifting structure (6) comprises: The lifting cylinder (601); and A lifting plate (602) connected to the cylinder rod of the lifting cylinder (601) to control the lifting; The lifting cylinder (601) drives the lifting plate (602) to rise so as to bend the pole lug (301) located in the positioning space.

7. The tooling for welding the tabs of a soft-knife module battery cell according to claim 2, characterized in that: The turning mechanism (7) comprises: A bearing (702) integrated into the tooling body (1) via a bearing seat (701); and A transmission rod (703) connected to the inner rings of the bearings (702) on both sides, wherein the transmission rod (703) is connected to an external driving device to drive the transmission rod (703) to rotate; The transmission rod (703) is provided with three connecting pieces (704) at intervals along its length direction, and the transmission rod (703) drives the battery cell positioning platform (201) to flip through the connecting pieces (704) and the side surface of the battery cell positioning platform (201).

8. A tool for welding the tabs of a soft-knife module battery cell according to claim 7, characterized in that: After the two groups of flipping mechanisms (7) drive the corresponding battery cell positioning platforms (201) to flip upward, the two pole ears (301) at the tails of the two groups of battery cell positioning platforms (201) are close to each other.

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