Welding fixture for various battery modules

Abstract

The utility model discloses a welding fixture for various battery modules, which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a fixed base, the upper end of the fixed base is provided with a positioning square groove, the inner bottom end of the positioning square groove is uniformly provided with a plurality of bolts, the upper end of the fixed base is connected with a module, and the module is provided with a plurality of bolts. A copper sleeve piece is inserted into the upper end of the module, an insulating piece is extruded and fixed at the upper end of the copper sleeve piece, and an upper pressing plate is fixedly connected to the periphery of the insulating piece. The positioning square groove is formed in the upper end of the fixed base, the bolts are arranged at the bottom end in the positioning square groove, each module can be inserted and positioned on the bolts, and the bolts in the positioning square groove not only play a fool-proof positioning role, but also can position different numbers of modules in each set of modules, so that the positioning efficiency is improved, and the production cost is reduced. Therefore, the clamping tool can be used for clamping modules of different numbers of batteries before welding, and meanwhile, products are prevented from being crushed due to the fact that different types of modules are placed in wrong positions.

Description

Technical Field

[0001] The utility model relates to the technical field of battery welding auxiliary tools, in particular to a welding fixture for various battery modules. Background Art

[0002] The welding fixture is used to ensure the size of the weldment, improve assembly accuracy and efficiency, and prevent welding deformation. There is a specific welding fixture to clamp the battery module, so that the laser welder can weld the battery cells in the battery module more accurately.

[0003] The states of the battery modules are all different. Especially in the welding production process, there will be multiple batches of battery cells used in production. Each batch is planned to be put into production and welding according to the matching quantity, which leads to different numbers of battery modules in each batch.

[0004] In the existing battery module welding fixture, since there is no positioning component in the battery module fixture, its overall positioning performance for the battery module is poor. It also causes that different numbers of battery modules in each batch require welding fixtures of different sizes for clamping. This requires the replacement of different welding tools for each welding, which is inefficient and has the risk of confusing battery cell batches and welding the wrong modules. At the same time, the existing welding fixture is generally made of metal. During the process of clamping the battery mold with the fixture, the clamping plate at the upper end will contact the battery cell in the mold. At this time, the battery cell parts are connected in series to form a loop, which in turn causes the current of the battery cell to increase when connected in series and generate sparks, causing hidden dangers in production. Therefore, in order to solve the above problems, we have proposed a welding fixture for multiple battery modules. Utility Model Content

[0005] The purpose of the utility model is to provide a welding fixture for various battery modules to solve the problem mentioned in the above background technology that the existing battery module fixture has no positioning components, resulting in its overall poor positioning performance for the battery module, and also resulting in different numbers of battery modules in each batch requiring welding fixtures of different sizes for clamping, which requires the replacement of different welding tools for each welding, which is inefficient and has the risk of confusing battery cell batches and welding the wrong modules; at the same time, the existing welding fixture is generally made of metal, and in the process of clamping the battery mold with the fixture, the clamping plate at its upper end will contact the battery cell in the mold. At this time, the battery cell parts are connected in series to form a loop, which in turn causes the current of the battery cell to increase when connected in series and generates sparks, causing hidden dangers in production and other problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding fixture for various battery modules, comprising a bottom plate, the upper end of the bottom plate is fixedly connected to a fixed base, the upper end of the fixed base is provided with a positioning square groove, the bottom end of the positioning square groove is evenly arranged with a plurality of pins, the upper end of the fixed base is connected to a module, the upper end of the module is inserted with a copper sleeve, the upper end of the copper sleeve is extruded and fixed with an insulating part, and the insulating part is fixedly connected with an upper pressure plate around it.

[0007] Preferably, the copper sleeve comprises a copper sleeve plate, a through hole B is penetrated through the middle of the upper end of the copper sleeve plate, and connection holes B are provided at the four end corners of the upper end of the copper sleeve plate.

[0008] Preferably, the insulating member comprises an insulating plate, a plurality of through holes A are evenly arranged in an array on the upper end of the insulating plate, and four connecting holes A are arranged in a circular array around the through holes A.

[0009] Preferably, each of the perforations A and each of the perforations B are arranged in a one-to-one correspondence, and each of the connecting holes A and each of the connecting holes B are arranged in a one-to-one correspondence.

[0010] Preferably, the lower end of the module is inserted into the latch.

[0011] Preferably, a plug-in frame plate is clamped at the lower end of the module, and a plurality of plug-in holes are evenly arranged in a row at the lower end of the plug-in frame plate, and the plug-in holes are matched with the plug-in pins.

[0012] Preferably, the upper pressing plate and the insulating member are fixedly connected by bolts.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a positioning square groove at the upper end of the fixed base, and a plurality of latches are arranged at the bottom end of the positioning square groove, wherein the lower end of each module is also provided with a limiting hole, and each module is separately provided, so that each module can be inserted and positioned on the latch at the bottom end of the positioning square groove, wherein the provision of the latch inside the positioning square groove not only plays a fool-proof positioning role, but also can position different numbers of modules in each set of modules, so as to realize the clamping tooling before welding of modules of different numbers of batteries, and the device uses the positioning effect of the fixed base on the module to prevent different types of modules from being misplaced and crushing the product;

[0015] 2. The integral copper set in the utility model can be fixed on the insulating member by screws. When the integral module is inserted into the positioning square groove on the fixed base, the integral upper pressing plate and the insulating member are pressed toward the upper end of the module, so that the copper set fixedly connected to the lower end of the insulating member is pressed on the upper end of the module. After the copper set is fixed to the insulating member by screws, the insulating member has an insulating effect on each copper set, thereby preventing the cells from being connected in series to form a loop and causing sparks between the modules;

[0016] 3. The plug-in frame can be used to initially fix and clamp the module, and then the pin hole at the lower end of the plug-in frame is plugged and connected with the pin at the upper end of the fixed base, so that the entire plug-in frame and module are fixed on the fixed base. This not only improves the fixing effect of the module before welding, but also makes the plug-in frame only clamp the same type of module, so as to avoid mixing of different types of modules, and effectively prevent the hidden dangers caused by mixed batch production of different modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural diagram of the explosion of the utility model;

[0019] Figure 3 It is a bottom-up stereoscopic structural diagram of the explosion of the utility model;

[0020] Figure 4 For this utility model Figure 2 Three-dimensional structure diagram at point A in the middle.

[0021] In the figure: 1. bottom plate; 2. fixed base; 3. module; 4. upper pressure plate; 5. insulating part; 501. insulating plate; 502. connection hole A; 503. through hole A; 6. copper sleeve; 601. copper sleeve; 602. connection hole B; 603. through hole B; 7. plug-in frame plate; 8. latch; 9. latch hole; 10. positioning square groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figures 1 to 4, the utility model provides an embodiment: a welding fixture for multiple battery modules, including a bottom plate 1, the upper end of the bottom plate 1 is fixedly connected to a fixed base 2, the upper end of the fixed base 2 is provided with a positioning square groove 10, the bottom end of the positioning square groove 10 is evenly arranged with a plurality of latches 8, the upper end of the fixed base 2 is connected to a module 3, the upper end of the module 3 is inserted with a copper sleeve 6, the upper end of the copper sleeve 6 is squeezed and fixed with an insulating member 5, the insulating member 5 is fixedly connected with an upper pressing plate 4 around the insulating member 5, wherein the lower end of the module 3 is directly inserted into the latch 8, wherein the upper pressing plate 4 and the insulating member 5 are fixedly connected by bolts, such a setting enables the upper pressing plate 4 and the insulating member 5 to be fixedly connected as a whole, then the fixed connection of the upper pressing plate 4 increases the deadweight of the integral insulating member 5, so that the pressure of the insulating member 5 when pressed on the upper end of the module 3 is greater;

[0024] In the setting of the device, a positioning square groove 10 is provided at the upper end of the fixed base 2, and a plurality of latches 8 are arranged at the bottom end of the positioning square groove 10, wherein a limiting hole is also provided at the lower end of each module 3, and each module 3 is separately provided, so that each module 3 can be inserted and positioned on the latch 8 at the bottom end of the positioning square groove 10, wherein the setting of the latch 8 inside the positioning square groove 10 not only plays a fool-proof positioning role, but also can position different numbers of modules 3 in each set of modules, so as to realize the clamping tooling before welding of modules of different numbers of batteries, and the device uses the positioning effect of the fixed base 2 on the module 3 to prevent different types of modules 3 from being misplaced and crushing the product;

[0025] The copper set 6 includes a copper set plate 601, a through hole B603 is provided in the middle of the upper end of the copper set plate 601, and connection holes B602 are provided at the four end corners of the upper end of the copper set plate 601, wherein the insulating member 5 includes an insulating plate 501, and a plurality of through holes A503 are uniformly arranged in an array on the upper end of the insulating plate 501, and four connection holes A502 are arranged in a circular array around the through hole A503, wherein the copper set 6 is designed separately for the battery cell pole in the module 3, and is compatible with the two connection modes of the module battery cell series and parallel connection;

[0026] By setting each through hole A503 and each through hole B603 in one-to-one correspondence, and each connecting hole A502 and each connecting hole B602 in one-to-one correspondence, the through holes A503 and the through holes B603 can be fixedly connected by screws, and the overall copper sleeve 6 can be fixed on the insulating part 5 by screws. When the overall module 3 is inserted into the positioning square groove 10 on the fixed base 2, the overall upper pressure plate 4 and the insulating part 5 are pressed toward the upper end of the module 3, so that the copper sleeve 6 fixedly connected to the lower end of the insulating part 5 is pressed onto the upper end of the module 3. After the copper sleeve 6 is fixed to the insulating part 5 by screws, the insulating part 5 has an insulating effect on each copper sleeve 6, thereby preventing the battery cells from being connected in series to form a loop and causing sparks between the modules.

[0027] The lower end of the module 3 can also be snapped into the plug-in frame plate 7, so that the lower end of the plug-in frame plate 7 is evenly arranged with a plurality of pin holes 9, and the pin holes 9 are plug-fitted with the pins 8. The plug-in frame plate 7 can perform preliminary fixing and clamping of the module 3, and then the pin holes 9 at the lower end of the plug-in frame plate 7 are plug-fitted and connected with the pins 8 at the upper end of the fixed base 2, so that the overall plug-in frame plate 7 and the module 3 are fixed on the fixed base 2, which not only improves the fixing effect of the module 3 before welding, but also makes the plug-in frame plate 7 can only clamp the same type of module 3, so as to avoid mixing of different types of modules 3, and thus effectively prevent the hidden dangers caused by mixed production of different modules 3.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A welding fixture for multiple battery modules, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected to a fixed base (2), the upper end of the fixed base (2) is provided with a positioning square groove (10), the bottom end of the positioning square groove (10) is evenly arranged with a plurality of latches (8), the upper end of the fixed base (2) is connected to a module (3), the upper end of the module (3) is plugged with a copper sleeve (6), the upper end of the copper sleeve (6) is extruded and fixed with an insulating member (5), and the insulating member (5) is fixedly connected to an upper pressure plate (4) around the periphery.

2. A welding fixture for multiple battery modules according to claim 1, characterized in that: The copper sleeve (6) comprises a copper sleeve plate (601), a through hole B (603) is provided through the middle of the upper end of the copper sleeve plate (601), and connection holes B (602) are provided at the four end corners of the upper end of the copper sleeve plate (601).

3. A welding fixture for multiple battery modules according to claim 2, characterized in that: The insulating member (5) comprises an insulating plate (501), the upper end of the insulating plate (501) is evenly arrayed with a plurality of through holes A (503), and four connecting holes A (502) are arranged in a circular array around the through holes A (503).

4. A welding fixture for multiple battery modules according to claim 3, characterized in that: Each of the perforations A (503) and each of the perforations B (603) are arranged in a one-to-one correspondence, and each of the connection holes A (502) and each of the connection holes B (602) are arranged in a one-to-one correspondence.

5. A welding fixture for multiple battery modules according to claim 4, characterized in that: The lower end of the module (3) is inserted into the latch (8).

6. The welding fixture for multiple battery modules according to claim 4, characterized in that: The lower end of the module (3) is clamped with a plug-in frame plate (7), and the lower end of the plug-in frame plate (7) is evenly arranged with a plurality of plug holes (9), and the plug holes (9) are plug-fitted with the plugs (8).

7. The welding fixture for multiple battery modules according to claim 1, characterized in that: The upper pressing plate (4) and the insulating member (5) are fixedly connected by bolts.

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