Soft package battery module laser welding tool

Abstract

The utility model discloses a soft package battery module laser welding tool which comprises an outer shell and a battery module body, a clamping assembly used for clamping and positioning the position of the battery module body is arranged in the outer shell, and a top plate and an insulating plate are placed above the outer shell. A plurality of copper pressure heads are mounted below the insulating plate through mounting assemblies, and each copper pressure head is mounted through at least four groups of mounting assemblies; the installation assembly comprises a long-strip-shaped groove, a front T-shaped groove and a rear T-shaped groove, the long-strip-shaped groove, the front T-shaped groove and the rear T-shaped groove are formed in the insulating plate, and sliding grooves are formed in the left side and the right side of the inner wall of a circular inserting groove. According to the laser welding tool for the soft package battery module, when the copper pressing head is mounted below the insulating plate, operation is conducted through the mounting assembly, only the T-shaped rod needs to be inserted and rotated during mounting, operation is convenient and fast, the mounting position can be adjusted, and the practicability of the device during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module welding, in particular to a laser welding tool for a soft-pack battery module. Background Art

[0002] In the existing lithium battery assembly process, when connecting square aluminum shell battery cells in series and parallel, the method of using laser welding to weld aluminum busbars to the positive and negative poles of the square aluminum shell battery cells has been widely used. The commonly used welding method usually uses a laser indenter to press down the welding points one by one, and single-point welding.

[0003] Reference patent publication number "CN210818038U" discloses a high-efficiency laser welding tool, which includes a plurality of laterally arranged battery cells, and a battery cell module formed by connecting the poles of two adjacent battery cells through an aluminum bar. It also includes a top plate assembly and a bottom plate, and the battery cell module is installed on the bottom plate.

[0004] This patent improves the welding efficiency of soft-pack battery modules. When welding the soft-pack battery modules, the welding points are located by multiple copper pressing heads. However, the copper pressing heads in the existing welding tooling are installed under the insulating plate by bolts and are locked by bolts during installation, which avoids troublesome operation. Moreover, the position is fixed after installation and is inconvenient to adjust. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a soft-pack battery module laser welding tool, which solves the problem that the copper pressure head in the existing soft-pack battery module laser welding tool is inconvenient to install.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A soft-pack battery module laser welding tool includes an outer shell and a battery module body. A clamping assembly for clamping and positioning the battery module body is provided inside the outer shell. A top plate and an insulating plate are placed above the outer shell. A plurality of copper pressing heads are installed below the insulating plate via mounting assemblies, and a single copper pressing head is installed via at least four sets of mounting assemblies.

[0007] The mounting assembly includes a long groove and two front and rear T-slots opened inside the insulating plate. A circular slot is opened inside the copper pressure head. Slide grooves are opened on the left and right sides of the inner wall of the circular slot. A circular slot is inserted inside the circular slot. Sliders are fixedly connected to the left and right sides of the circular slot.

[0008] Preferably, two front and rear fan-shaped grooves are provided at the bottom of the copper pressure head, and the fan-shaped grooves are connected to the circular slot and the slide groove. A limit spring is provided on the surface of the T-shaped rod, and one end of the limit spring is fixedly connected to the bottom of the T-shaped end of the T-shaped rod.

[0009] Preferably, the clamping assembly includes two left and right fixed seats, and both fixed seats are fixedly connected to the bottom of the outer shell, a bidirectional threaded rod is rotatably connected between the two fixed seats, two front and rear slide rails are fixedly connected to the bottom of the outer shell, and two left and right moving blocks are slidably connected between the two slide rails.

[0010] Preferably, the two moving blocks are both threadedly connected to the surface of the bidirectional threaded rod, a through groove is provided at the bottom of the inner wall of the outer shell, the top of the right moving block is fixedly connected to the first clamping block, and the first clamping block extends from the through groove to the interior of the outer shell, and the top of the left moving block is slidably connected to two front and rear sliding rods, the tops of the two sliding rods are both fixedly connected to the second clamping block, and the second clamping block extends from the through groove to the interior of the outer shell.

[0011] Preferably, a return spring is sleeved on the surface of the sliding rod located between the second clamping block and the moving block, one end of the return spring is fixedly connected to the top of the moving block, and the other end of the return spring is fixedly connected to the bottom of the second clamping block, and the bottom of the second clamping block is fixedly connected with a pressure plate.

[0012] Preferably, the top plate and the insulating plate are stacked on top of the outer shell, and the front and back of the outer shell are both provided with two left and right groups of locks for fixing the top plate.

[0013] Beneficial effects

[0014] The utility model provides a laser welding tool for soft-pack battery modules. Compared with the existing technology, it has the following advantages:

[0015] 1. The soft-pack battery module laser welding tooling includes an installation component including a long groove and two front and rear T-slots opened inside the insulating plate. A circular slot is opened inside the copper pressure head, and slide grooves are opened on the left and right sides of the inner wall of the circular slot. When the copper pressure head is installed under the insulating plate, the installation component is used for operation. During installation, only the T-bar needs to be inserted and rotated. The operation is convenient and quick, and the installation position can be adjusted, which improves the practicality of the device when used.

[0016] 2. The soft-pack battery module laser welding tooling includes two left and right fixing seats through a clamping assembly, and both fixing seats are fixedly connected to the bottom of the outer shell. A bidirectional threaded rod is rotatably connected between the two fixing seats, and the bottom of the outer shell is fixedly connected to two front and rear slide rails. When the battery module body is placed inside the outer shell, the position of the battery module body is clamped by the clamping assembly, thereby avoiding the problem of left and right movement and improving the stability of the battery module during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the appearance of the utility model;

[0018] Figure 2 A schematic diagram of the top plate and insulating plate of the utility model;

[0019] Figure 3 This is a cross-sectional view of the copper indenter of the present invention;

[0020] Figure 4 This is an exploded view of the utility model;

[0021] Figure 5 It is an enlarged view of point A of the present utility model.

[0022] In the figure: 1. outer shell; 2. battery module body; 3. top plate; 4. lock; 5. insulating plate; 7. copper pressure head; 8. mounting assembly; 81. long groove; 82. T-slot; 83. round slot; 84. slide; 85. T-bar; 86. slider; 87. fan-shaped groove; 88. limit spring; 9. clamping assembly; 91. fixing seat; 92. two-way threaded rod; 93. slide rail; 94. moving block; 95. through groove; 96. first clamping block; 97. slide bar; 98. second clamping block; 99. reset spring; 910. pressure plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5 The soft pack battery module laser welding tooling provides two technical solutions:

[0025] The first embodiment comprises an outer shell 1 and a battery module body 2. A clamping assembly 9 for clamping and positioning the battery module body 2 is provided inside the outer shell 1. A top plate 3 and an insulating plate 5 are placed above the outer shell 1. The top plate 3 and the insulating plate 5 are stacked on top of the outer shell 1. Two sets of left and right locks 4 for fixing the top plate 3 are provided on the front and back of the outer shell 1. A plurality of copper pressing heads 7 are installed below the insulating plate 5 through an installation assembly 8, and a single copper pressing head 7 is installed through at least four sets of installation assemblies 8.

[0026] The mounting assembly 8 includes a long strip groove 81 and two front and rear T-slots 82 opened inside the insulating plate 5, a circular slot 83 is opened inside the copper pressure head 7, and slide grooves 84 are opened on the left and right sides of the inner wall of the circular slot 83, a circular slot 83 is inserted into the circular slot 83, and sliders 86 are fixedly connected to the left and right sides of the circular slot 83, and two front and rear fan-shaped grooves 87 are opened at the bottom of the copper pressure head 7, and the fan-shaped grooves 87 are in a connected state with the circular slot 83 and the slide groove 84, and a limit spring 88 is sleeved on the surface of the T-bar 85, and one end of the limit spring 88 is fixedly connected to the bottom of the T-shaped end of the T-bar 85.

[0027] When the copper pressure head 7 is installed under the insulating plate 5, the operation is performed through the installation component 9. During installation, only the T-bar 85 needs to be inserted and rotated. The operation is convenient and quick, and the installation position can be adjusted, which improves the practicality of the device when used.

[0028] The second embodiment is mainly different from the first embodiment in that the clamping assembly 9 includes two left and right fixed seats 91, and the two fixed seats 91 are fixedly connected to the bottom of the outer shell 1, a two-way threaded rod 92 is rotatably connected between the two fixed seats 91, the bottom of the outer shell 1 is fixedly connected to two front and rear slide rails 93, and two left and right moving blocks 94 are slidably connected between the two slide rails 93, and the two moving blocks 94 are threadedly connected to the surface of the two-way threaded rod 92. A through groove 95 is provided at the bottom of the inner wall of the outer shell 1, and a first clamping block 96 is fixedly connected to the top of the right moving block 94, and The first clamping block 96 extends from the through slot 95 to the interior of the outer shell 1, and the top of the left movable block 94 is slidably connected to two front and rear sliding rods 97. The tops of the two sliding rods 97 are fixedly connected to the second clamping block 98, and the second clamping block 98 extends from the through slot 95 to the interior of the outer shell 1. The surface of the sliding rod 97 located between the second clamping block 98 and the movable block 94 is provided with a return spring 99, one end of the return spring 99 is fixedly connected to the top of the movable block 94, and the other end of the return spring 99 is fixedly connected to the bottom of the second clamping block 98, and the bottom of the second clamping block 98 is fixedly connected to a pressure plate 910.

[0029] When the battery module 2 is placed inside the outer shell 1, the battery module body 2 is clamped by the clamping assembly 9, thereby avoiding the problem of left and right movement and improving the stability of the battery module during welding.

[0030] When in use, place the copper pressure head 7 at a suitable position below the insulating plate 5, and align the position of the slide groove 84 with the T-slot 82, insert the T-bar 85 into the circular slot 83, align the slide groove 84 with the slider 86 during insertion, and after the T-bar 85 is fully inserted into the slide groove 84, press down the T-bar 85 and rotate the T-bar 85 so that the slider 86 is misaligned with the slide groove 84, and the slider 86 enters the fan-shaped groove 87, thereby completing the installation of the copper pressure head 7, and then the battery module is installed. The main body 2 is placed on one side of the outer shell 1 and the battery module body 2 is pushed in. When pushed in, the battery module body 2 contacts the second clamp 98 and causes the second clamp 98 to move downward, so that the battery module body 2 can pass the position of the second clamp 98 and enter the interior of the outer shell 1. After fully entering, the second clamp 98 is reset under the action of the slide rod 97. At this time, the bidirectional threaded rod 92 is rotated to make the second clamp 98 and the first clamp 96 close to each other, thereby clamping the battery module body 2.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding tool for a soft-pack battery module, comprising an outer shell (1) and a battery module body (2), characterized in that: A clamping assembly (9) for clamping and positioning the battery module body (2) is provided inside the outer shell (1); a top plate (3) and an insulating plate (5) are placed above the outer shell (1); a plurality of copper pressing heads (7) are installed below the insulating plate (5) via a mounting assembly (8), and a single copper pressing head (7) is installed via at least four sets of mounting assemblies (8); The mounting assembly (8) comprises a long slot (81) and two front and rear T-slots (82) provided inside the insulating plate (5); a circular slot (83) is provided inside the copper pressure head (7); sliding slots (84) are provided on the left and right sides of the inner wall of the circular slot (83); a T-bar (85) is inserted inside the circular slot (83); and sliders (86) are fixedly connected to the left and right sides of the T-bar (85).

2. The laser welding tool for soft-pack battery modules according to claim 1, characterized in that: The bottom of the copper pressure head (7) is provided with two front and rear fan-shaped grooves (87), and the fan-shaped grooves (87) are in a communicating state with the circular slot (83) and the slide groove (84). The surface of the T-shaped rod (85) is provided with a limit spring (88), and one end of the limit spring (88) is fixedly connected to the bottom of the T-shaped end of the T-shaped rod (85).

3. The laser welding tool for soft-pack battery modules according to claim 1, characterized in that: The clamping assembly (9) comprises two left and right fixed seats (91), and both fixed seats (91) are fixedly connected to the bottom of the outer shell (1); a bidirectional threaded rod (92) is rotatably connected between the two fixed seats (91); two front and rear slide rails (93) are fixedly connected to the bottom of the outer shell (1); and two left and right moving blocks (94) are slidably connected between the two slide rails (93).

4. The laser welding tool for soft-pack battery modules according to claim 3, characterized in that: The two moving blocks (94) are both threadedly connected to the surface of the bidirectional threaded rod (92); a through slot (95) is provided at the bottom of the inner wall of the outer shell (1); the top of the right moving block (94) is fixedly connected to a first clamping block (96), and the first clamping block (96) extends from the through slot (95) to the inside of the outer shell (1); the top of the left moving block (94) is slidably connected to two front and rear sliding rods (97); the tops of the two sliding rods (97) are both fixedly connected to a second clamping block (98), and the second clamping block (98) extends from the through slot (95) to the inside of the outer shell (1).

5. The laser welding tool for soft-pack battery modules according to claim 4, characterized in that: The surface of the slide bar (97) between the second clamping block (98) and the moving block (94) is provided with a return spring (99), one end of the return spring (99) is fixedly connected to the top of the moving block (94), and the other end of the return spring (99) is fixedly connected to the bottom of the second clamping block (98), and the bottom of the second clamping block (98) is fixedly connected to a pressure plate (910).

6. The laser welding tool for soft-pack battery module according to claim 1, characterized in that: The top plate (3) and the insulating plate (5) are stacked on top of the outer shell (1), and the front and back of the outer shell (1) are both provided with two left and right groups of lock buckles (4) for fixing the top plate (3).

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