Battery module laser welding circulation tool clamp

Abstract

The utility model discloses a battery module laser welding circulation tool clamp. The battery module laser welding circulation tool clamp comprises a transfer clamp bottom plate. A pair of parallel stacking clamp limiting blocks II is fixedly arranged on the transfer clamp bottom plate; the stacking bottom plate is installed on the upper surface of the transfer clamp bottom plate, the pair of second stacking clamp limiting blocks are attached to the two sides of the stacking bottom plate, and one ends of the second stacking clamp limiting blocks abut against the first stacking clamp limiting blocks arranged on the transfer clamp bottom plate in advance. A pair of parallel side edge positioning strips is fixedly arranged on the stacking bottom plate, and a battery module is placed between the pair of side edge positioning strips; the top positioning strip is mounted between the pair of side edge positioning strips and is used for supporting one end of the battery module; the other end of the battery module is supported by a movable push plate, and the other side of the push plate is connected with a locking air cylinder mechanism fixedly arranged on the transfer clamp bottom plate. According to the utility model, the module is hoisted along with the stacking clamp, so that zero offset of the module is ensured; the welding position of the module can be controlled within 0.2 mm, and abnormities such as welding burst points and pseudo soldering are eliminated; and the welding length of the module can reach 1300mm.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries and relates to a module laser welding flow fixture. Background Art

[0002] Since the battery module is directly hoisted, it will cause the battery poles to be misaligned, the battery to be skewed, etc., which will lead to abnormal conditions such as cold welding, explosion points, and welding deviation during laser automatic welding. In addition, due to the heat dissipation requirements of the module itself, insulation boards or aerogels are usually pasted between the batteries, and then packaged with steel belts. A certain force must be applied to the module during transportation to ensure that the stacked batteries do not shift, thereby eliminating welding abnormalities. Some manufacturers use structures such as manipulators and cylinder tightening, but as the module lengthens, the force required to be applied becomes greater and greater, which will inevitably squeeze the battery and cause new problems such as shell deformation. In the existing technology, there is a lack of effective tooling and fixtures in the production of battery modules to overcome the above defects. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a battery module laser welding transfer fixture, the purpose of which is to allow the battery module to flow together with the fixture to facilitate lifting or translation, and solve welding problems such as deformation, cold welding, and over-welding during module transportation; and reduce the influence of module length, and can adapt to longer module lengths to meet the needs of large-capacity battery production; at the same time, the mechanism has the advantages of precise positioning, adjustable locking force, and low cost.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A battery module laser welding flow fixture, comprising a transfer fixture base plate; a pair of parallel stacking fixture limit blocks 2 are fixed on the transfer fixture base plate; the stacking base plate is installed on the upper surface of the transfer fixture base plate, and a pair of the stacking fixture limit blocks 2 are abutted on both sides thereof, and one end thereof supports the stacking fixture limit block 1 preset on the transfer fixture base plate; a pair of parallel side positioning strips are fixed on the stacking base plate, for placing the battery module between the pair of side positioning strips; a top positioning strip is installed between a pair of side positioning strips, for supporting one end of the battery module; the other end of the battery module is supported by a movable push plate, and the other side of the push plate is connected to a locking cylinder mechanism fixed on the transfer fixture base plate, for pushing and pulling the push plate.

[0006] As a further optimization, the four corners of the stacking base plate are fixed with hanging rings.

[0007] As a further optimization, a plurality of groups of threaded holes for installing the top positioning bars are provided on the stacking bottom plate at even intervals, and the installation position of the top positioning bars is adjustable.

[0008] As a further optimization, a plurality of pulley sets are connected to the periphery of the bottom plate of the transfer fixture.

[0009] As a further optimization, a pair of stacking fixture positioning pins are fixed on the transfer fixture base plate; a stacking fixture positioning sleeve corresponding to the stacking fixture positioning pins is provided on the stacking base plate, which is used to fix the position of the stacking base plate and the transfer fixture base plate when the stacking fixture positioning pins are inserted into the stacking fixture positioning sleeve.

[0010] The beneficial effects of the present invention are: the module is hoisted together with the stacking fixture to ensure zero offset of the module; the stacking fixture and the transfer fixture adopt a positioning pin structure, and the module welding position can be controlled within 0.2mm, eliminating abnormalities such as welding explosion points and cold welds; the tooling can achieve a module welding length of 1300mm, meeting the needs of mainstream products; the tooling has low cost and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0012] Figure 2 This is a schematic structural diagram of a transfer fixture according to Example 1 of the present utility model;

[0013] Figure 3 This is a schematic diagram of the stacking fixture structure of Example 1 of the present utility model.

[0014] Figure 4 This is a schematic structural diagram of the locking cylinder mechanism of Example 1 of the present utility model.

[0015] The correspondence between the technical features and the reference numerals in the figure is: stacking clamp limit block 1 76, stacking clamp limit block 2 22, transfer clamp base plate 125, anti-collision strip 64, transfer clamp positioning sleeve 131, pulley group 96, stacking clamp positioning pin 115, lifting ring 169, stacking base plate 105, stacking clamp positioning sleeve 111, top positioning strip 47, side positioning strip 57, locking cylinder mechanism 56, locking base 49, push plate 89. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the embodiments described are only some preferred embodiments of the present invention, rather than all embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-4 ;

[0018] The utility model provides the following technical solutions: a battery module laser welding flow fixture, which is used in the battery module welding production line, such as Figure 1 As shown; the stacking fixture limit block 1 76 and the stacking fixture limit block 2 22 are fixed on the transfer fixture bottom plate 125 to guide and position the stacking fixture, the locking machine hook is fixed on the transfer fixture, and the stacking fixture equipped with the module is placed on the transfer fixture at the loading position. After welding is completed, the stacking fixture is unloaded at the unloading position, and the transfer fixture flows with the line.

[0019] like Figure 2 The transfer fixture shown is equipped with anti-collision strips 64 at the head and tail to block the action of the cylinder and reduce the impact on the module; the pulley group 96 is installed around the transfer fixture 125 to prevent the fixture from getting stuck inside the line body; the transfer fixture 125 is made of fiberglass to eliminate the safety hazard of conductive module; two positioning pins 115 are designed on the central axis of the transfer fixture 125 to position the stacking fixture; the transfer fixture 125 is designed with four positioning sleeves 131 to ensure the positioning accuracy of its flow station.

[0020] like Figure 3 The stacking fixture shown in the figure has lifting rings 169 installed at the four corners of the stacking fixture base plate 105, and is hoisted by a hoist; two positioning sleeves 111 are designed on the central axis of the stacking fixture base plate 105, which are used in conjunction with the stacking fixture positioning pins 115 to ensure that the positioning accuracy is within 0.3mm; the stacking fixture base plate 105 is designed with multiple rows of threaded holes for fixing the top positioning block 47, and the position of the positioning block can be adjusted to meet the requirements of different module lengths. The tooling can meet the requirement of a module length of 1300mm; the side positioning strips 57 are fixed on both sides of the stacking fixture base plate 105, which are adjusted according to the module size to limit the stacking module.

[0021] like Figure 4 As shown in the locking mechanism, the cylinder 56 is installed on the connecting plate 49 and is fixed as a whole on the bottom plate 125 of the transfer fixture. The push plate 89 is connected to the cylinder piston rod. The cylinder drives the push plate to move back and forth to lock or release the module.

[0022] It can be seen that the battery module laser welding flow fixture is mainly composed of transfer fixtures, stacking fixtures, locking mechanisms, positioning mechanisms, etc.

[0023] The transfer fixture is made of fiberglass and is processed in one piece. Buffer blocks are installed at the head and tail to reduce the impact on the module. Pulley sets are installed around the fixture to prevent the fixture from getting stuck inside the line. Two positioning pins are fixed at the axis position of the fixture. After the stacked fixtures are positioned, the positioning pins must not be exposed to avoid scratching the battery. At the same time, the transfer fixture is designed with four positioning sleeves made of brass, which are installed on the reverse side. The lower surface of the positioning sleeve is flush with the lower surface of the base plate to meet the positioning accuracy requirements of different workstations.

[0024] The stacking fixture is mainly used to position and pack the batteries to ensure that the battery poles are in a straight line with an error of less than 0.3mm. The positioning sleeve is installed on the bottom plate of the fixture. The positioning sleeve is made of brass to ensure the relative position of the module and the transfer fixture. The module repeat positioning accuracy is 0.5mm, which meets the module welding requirements.

[0025] The locking mechanism is installed on the bottom plate of the transfer fixture to lock the tail of the module. Pneumatic locking is selected, and the force and cylinder stroke can be appropriately adjusted to ensure that the module offset error is within 0.2mm.

[0026] The positioning mechanism guides and positions the stacking fixture, and is mainly composed of a top limit block and a side limit block.

[0027] The beneficial effects of the present invention are: the module is hoisted together with the stacking fixture to ensure zero offset of the module; the stacking fixture and the transfer fixture adopt a positioning pin structure, and the module welding position can be controlled within 0.2mm, eliminating abnormalities such as welding explosion points and cold welds; the tooling can achieve a module welding length of 1300mm, meeting the needs of mainstream products; the tooling has low cost and simple structure.

[0028] The parts not described in detail in this utility model are prior art. For those skilled in the art, the technical features of the above embodiments can be combined in any way. To keep the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery module laser welding transfer fixture, comprising a transfer fixture base plate (125); characterized in that: A pair of parallel stacking fixture limit blocks 2 (22) are fixed on the transfer fixture bottom plate (125); the stacking bottom plate (105) is installed on the upper surface of the transfer fixture bottom plate (125), and a pair of stacking fixture limit blocks 2 (22) are abutted on both sides thereof, with one end thereof supporting the stacking fixture limit block 1 (76) preset on the transfer fixture bottom plate (125); A pair of parallel side positioning bars (57) are fixed on the stacking base plate (105) for placing the battery module between the pair of side positioning bars (57); a top positioning bar (47) is installed between the pair of side positioning bars (57) for supporting one end of the battery module; the other end of the battery module is supported by a movable push plate (89), and the other side of the push plate (89) is connected to a locking cylinder mechanism (56) fixed on the transfer fixture base plate (125) for pushing and pulling the push plate (89).

2. The battery module laser welding flow fixture according to claim 1, characterized in that: The four corners of the stacking bottom plate (105) are all fixedly connected with hanging rings (169).

3. The battery module laser welding flow fixture according to claim 1, characterized in that: A plurality of groups of threaded holes evenly spaced apart are provided on the stacking bottom plate (105), so that the installation position of the top positioning bar (47) can be adjusted.

4. The battery module laser welding flow fixture according to claim 1, characterized in that: The periphery of the transfer fixture bottom plate (125) is connected to a plurality of pulley sets (96).

5. The battery module laser welding flow fixture according to claim 1, characterized in that: A pair of stacking fixture positioning pins (115) are fixedly provided on the transfer fixture base plate (125); and a stacking fixture positioning sleeve (111) corresponding to the stacking fixture positioning pins (115) is provided on the stacking base plate (105), which is used to fix the position of the stacking base plate (105) and the transfer fixture base plate (125) when the stacking fixture positioning pins (115) are inserted into the stacking fixture positioning sleeve (111).

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