Battery module welding jig

Abstract

The utility model is suitable for the technical field of jigs, and provides a battery module welding jig. Comprising an enclosure frame body, an opening and a clamping unit, wherein the enclosure frame body is configured to surround the periphery of the battery module and expose a to-be-welded part of the battery module; the opening is formed in at least one side of the enclosure frame body and allows the battery module to move in or out; the clamping unit is arranged on the enclosure frame body at the periphery of the opening and is configured to press the battery module so as to fix the battery module on the enclosure frame body; the bearing frame body is configured to bear and fix the enclosure frame body loaded with the battery module, and the welding assembly is installed on the bearing frame body in a sliding mode and is configured to be close to or far away from a to-be-welded part of the battery module so as to weld or reset the to-be-welded part of the battery module. The enclosure frame body prevents the outer surface of the shell-free module from being in direct contact with an external clamp, so that the damage to the shell-free module caused by the clamp in the clamping process is effectively avoided; and therefore, the welding efficiency is effectively improved while the welding yield of the shell-free module is guaranteed, and the welding requirement of the shell-free module can be met.

Description

Technical Field

[0001] The present application relates to the field of jig technology, and in particular to a battery module welding jig. Background Art

[0002] During the production of soft-pack battery modules, module welding is an indispensable step. Laser welding is usually required to achieve high-voltage electrical connections inside the soft-pack battery module. Before welding, the soft-pack battery module must first be installed in a welding jig; then the battery module's cell tabs are pressed through the welding jig to make their contact with the busbar closer, and then the battery welding device is used to weld and fix the tabs on each cell to the busbar to achieve the welding effect.

[0003] A shellless module refers to a battery cluster composed of battery cells arranged and loaded into a bracket, and then sprayed with glue or wrapped with tape between the battery cells. It generally includes battery cells, brackets, PCBs, copper and aluminum busbars and other structures. When in use, the battery cluster is loaded into the battery case as a whole, and then assembled with other devices inside the battery case to form a battery pack, that is, the battery cell is directly installed into the battery pack, eliminating the intermediate module shell part, thereby realizing the CTP structure; since this type of shellless module lacks a module shell, it not only reduces the material cost, but also the extra space inside the battery case can be used to install more battery cells, thereby effectively improving the volume energy density of the battery case.

[0004] For shellless modules, before being assembled into the battery case, the tabs and busbars on each battery cell also need to be welded. However, since there is no outer shell structure on the outside, if it is placed directly on the welding tool, it is easy to be damaged by external force, making it inconvenient to complete the welding process; if manual assisted welding is used, manual pressing is easy to cause poor welding due to uneven force at the connection, and the actual welding efficiency is low. For this reason, a battery module welding jig is proposed to assist the welding of shellless modules, which can effectively improve the welding yield and welding efficiency of shellless modules. Utility Model Content

[0005] The purpose of the utility model is to provide a battery module welding jig for assisting the welding of shell-less battery modules, effectively improving the welding efficiency while ensuring the welding yield of the shell-less modules, and meeting the welding requirements of the shell-less modules.

[0006] In order to achieve one of the aforementioned objectives, according to one aspect of the present application, a battery module welding jig is provided, comprising:

[0007] An enclosing frame is configured to enclose the periphery of the battery module and expose the portion of the battery module to be welded; at least one side of the enclosing frame is provided with an opening for moving the battery module in or out;

[0008] A clamping unit is provided on the enclosing frame outside the opening and is configured to press the battery module to fix it to the enclosing frame;

[0009] A supporting frame is configured to support and fix the enclosed frame after the battery module is loaded;

[0010] The welding assembly is slidably mounted on the support frame and is configured to be close to or away from the battery module to be welded so as to weld it or reset it after welding is completed.

[0011] In addition to one or more of the above, or as an alternative, in another embodiment, the clamping unit includes:

[0012] The crimping piece is detachably mounted on the periphery of the opening of the enclosing frame and is configured as at least one.

[0013] In addition to one or more of the above, or as an alternative, in another embodiment, the crimping part is configured as a crossbeam plate and two are arranged in parallel in sequence along the first direction, and both ends of each of the crossbeam plates are fixed to or separated from the enclosing frame by quick clamps.

[0014] In addition to one or more of the above, or as an alternative, in another embodiment, further comprising:

[0015] a supporting plate, disposed at one of the two ends of the enclosed frame along the first direction;

[0016] The through opening is opened at the other of the two ends of the enclosing frame along the first direction, and is configured to be opposite to the supporting plate and to allow the portion to be welded of the battery module inside the enclosing frame to pass through.

[0017] In addition to one or more of the above, or as an alternative, in another embodiment, further comprising:

[0018] The positioning unit is arranged on the inner wall of the enclosing frame opposite to the opening and / or the side wall of the clamping unit close to the opening, and is configured to connect with the battery module entering the enclosing frame to limit its position.

[0019] In addition to one or more of the above, or as an alternative, in another embodiment, the positioning unit includes:

[0020] a positioning pin fixed to the enclosing frame and / or the clamping unit and configured to connect with a pin hole on the top bracket of the battery module to be welded;

[0021] The limiting blocks are fixed to the enclosing frame and / or the clamping unit and are located beside the positioning pins. They are configured in multiples and are sequentially connected to the gap between two adjacent battery cells of the battery module.

[0022] In addition to one or more of the above, or as an alternative, in another embodiment, the support frame includes:

[0023] A supporting platform, configured to place the enclosed frame after loading the battery module;

[0024] The side plates are configured as two and symmetrically arranged at both ends of the supporting platform along the second direction, and the welding assembly is slidably connected to the two side plates along the third direction;

[0025] The limiting unit is installed on the supporting platform and is configured to fix the enclosed frame to the supporting platform.

[0026] In addition to one or more of the above, or as an alternative, in another embodiment, the limiting unit includes:

[0027] The limiting blocks are fixed to the supporting platform and are configured in a number of at least three and respectively abut against the outer walls of both sides of the enclosed frame along the second direction and the outer wall of one side along the first direction;

[0028] The quick installation clip is fixed to the supporting platform, is configured as at least one and is connected to the outer wall of the other side of the enclosing frame along the first direction to fix it.

[0029] In addition to or as an alternative to one or more of the above, in another embodiment, the welding assembly includes:

[0030] a crimping plate slidably connected to the two side plates along a third direction;

[0031] a driving member fixed to the side plate, configured as at least one and having an output end connected to the crimping plate to drive the crimping plate to reciprocate along the third direction;

[0032] The welding unit is installed on one side of the pressing plate close to the supporting platform and is configured to contact the to-be-welded portion of the battery module inside the enclosed frame to weld it.

[0033] In addition to one or more of the above, or as an alternative, in another embodiment, further comprising:

[0034] The supporting rods are configured as at least two and are respectively connected to the two side plates in a sliding manner along the third direction; the top end of each supporting rod is fixedly connected to a side of the pressing plate close to the supporting platform.

[0035] In addition to one or more of the above, or as an alternative, in another embodiment, the driving member is configured as a cylinder and the number is two, and the two cylinders are symmetrically distributed on the outer walls of the two side plates.

[0036] In addition to one or more of the above, or as an alternative, in another embodiment, the enclosing frame is formed by a plurality of enclosing panels connected to each other by hinges.

[0037] Compared with the prior art, the beneficial effects of the present invention are: by providing an enclosing frame, it is convenient to enclose and install the shellless module, and by crimping and fixing it through a clamping unit provided on the periphery of the opening, the shellless module to be welded can be fixed inside the enclosing frame, thereby avoiding direct contact between the outer surface of the shellless module and the external clamp, and effectively avoiding damage to the shellless module caused by the clamp during the clamping process; the enclosing frame after loading the shellless module can be fixed by the supporting frame, and since the enclosing frame can expose the part of the shellless module to be welded, the shellless module can be welded using a welding assembly slidably installed on the supporting frame and reset after welding is completed, thereby effectively improving the welding efficiency while ensuring the welding yield of the shellless module, and can meet the welding requirements of the shellless module. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The disclosure of this application will be more easily understood with reference to the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0039] In the picture:

[0040] Figure 1 This is a schematic diagram of the three-dimensional structure of a battery module welding jig according to the present application after loading a battery module;

[0041] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure from another perspective;

[0042] Figure 3 This is a schematic diagram of the three-dimensional structure of a battery module welding jig according to the present application when it is not placed in an enclosing frame;

[0043] Figure 4 This is a schematic diagram of the three-dimensional structure of an enclosed frame of a battery module welding jig according to the present application;

[0044] Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure from another perspective;

[0045] Figure 6 This is a schematic diagram of the three-dimensional structure of a battery module welding jig according to the present application when the enclosing frame is filled with battery modules and placed on a supporting platform.

[0046] In the accompanying drawings: 1 enclosing frame, 11 through-hole, 12 support plate, 13 opening, 2 clamping unit, 21 crimping part, 22 quick clamp, 3 supporting frame, 31 supporting platform, 32 side plate, 33 limiting unit, 331 limiting block, 332 quick installation clamp, 4 welding assembly, 41 crimping plate, 42 driving part, 43 welding unit, 44 supporting rod, 5 positioning unit, 51 positioning pin, 52 positioning block. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0048] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0049] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0050] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0051] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0052] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0053] In the existing technology, CTP (cell to pack) battery packs generally refer to skipping the standardized module link and directly integrating the battery cells into the battery pack, thereby eliminating the intermediate module link. Since the space occupied by the module shell is reduced, the space utilization and energy density of the battery pack are effectively improved. In actual operation, the tabs and busbars on the battery cells inside the shellless module are generally welded first, and then the welded shellless module is installed into the battery case. After unified assembly, the assembly of the battery pack can be completed.

[0054] Since the shellless module lacks the necessary shell structure, during the welding process, if manual welding is used, workers manually press the tabs and busbars, which can easily lead to uneven force at the welding connection, and thus make it difficult to ensure the welding yield, and the welding efficiency is low during actual operation; if the existing battery module welding tool is used for welding, when the shellless module is clamped, since it only connects and fixes multiple battery cells by wrapping tape, and sets some brackets, PCBs and copper-aluminum bars, the shellless module is easily damaged under the force of the existing fixture, resulting in a decrease in product yield and difficulty in completing the welding process of the shellless module.

[0055] In order to solve the problems existing in the prior art, a battery module welding jig of the present application is proposed.

[0056] Figure 1 It is a three-dimensional schematic diagram of a battery module welding jig according to an embodiment of the present application, which can be used for welding shellless battery modules and includes: an enclosing frame 1 configured to enclose the periphery of the battery module and expose the part of the battery module to be welded, an opening 13 opened on at least one side of the enclosing frame 1 for moving the battery module in or out, a clamping unit 2 arranged on the periphery of the opening 13 and configured to press the battery module to fix it to the enclosing frame 1, a supporting frame 3 configured to support and fix the enclosing frame 1 after loading the battery module, and a welding assembly 4 slidably mounted on the supporting frame 3 and configured to approach or move away from the part of the battery module to be welded to weld or reset it.

[0057] In this arrangement, reference Figure 1-Figure 5The battery module welding jig described in this article facilitates the enclosed installation of the shellless module by providing an enclosing frame 1, and is crimped and fixed by the clamping unit 2 provided on the periphery of the opening 13, so that the shellless module to be welded can be fixed inside the enclosing frame 1, thereby avoiding direct contact between the outer surface of the shellless module and the external clamp, and effectively avoiding damage to the shellless module caused by the clamp during the clamping process; the enclosing frame 1 after loading the shellless module can be fixed by the supporting frame 3, and because the enclosing frame 1 can expose the part of the shellless module to be welded, the shellless module can be welded using a welding assembly 4 slidably installed on the supporting frame 3 and reset after welding is completed, thereby effectively improving the welding efficiency while ensuring the welding yield of the shellless module, and meeting the welding requirements of the shellless module.

[0058] In actual operation of this embodiment, the shellless module is first loaded into the enclosing frame 1 through the opening 13, and then fixed inside by using the clamping unit 2. Subsequently, the enclosing frame 1 loaded with the battery module is transferred to the supporting frame 3. After clamping and fixing it, the welding assembly 4 slidably installed on the supporting frame 3 is used to weld the battery module. After the welding is completed, the welding assembly 4 is reset, and then the enclosing frame 1 is removed from the supporting frame 3. The clamping unit 2 is opened and the welded battery module is taken out, and then the next shellless module is loaded and welded.

[0059] For example, the actions of loading and unloading the shellless module into and out of the enclosing frame 1, as well as the action of transferring the enclosing frame 1 loaded with the shellless module, can be performed by a driving device, thereby improving the overall welding efficiency. Regarding the specific implementation process, this embodiment does not limit it here.

[0060] It should be noted that the welding jig in the present application can be used not only for welding shellless modules, but also for welding battery modules with shells. At this time, it is only necessary to place the battery module with shells inside the enclosing frame 1, and then transfer it to the supporting frame 3 and fix it, and then use the welding assembly 4 to weld the welding parts of the battery module. Therefore, the application scenario of the battery module welding jig of this embodiment is not unique.

[0061] In actual application of this embodiment, the enclosing frame 1 surrounds the outer periphery of the shellless module. Specifically, it can only surround part of the outer periphery of the shellless module, or it can completely surround the shellless module. As long as the part of the battery module to be welded can be exposed, the specific structure of the enclosing frame 1 is not a restrictive provision of this embodiment.

[0062] The following will introduce further specific implementation or refinement and improvement process of the board card inserter assembly through exemplary descriptions, so as to further improve it or for improvement considerations in other aspects.

[0063] In one case of this embodiment, reference Figure 4 and Figure 5 The clamping unit 2 includes: a crimping member 21 that is detachably mounted on the periphery of the opening 13 of the enclosing frame 1 and is configured as at least one crimping member 21 .

[0064] It is not difficult to see that the clamping unit 2 is set as a crimping part 21, which is convenient for blocking the above-mentioned opening 13 to ensure that the shellless module will not fall during transportation. By detachably installing it at the opening 13 of the enclosing frame 1, it is convenient to crimp and fix the shellless module located inside it, or to take out the welded shellless module.

[0065] On this basis, the crimping piece 21 is configured as a crossbeam plate and two crossbeam plates are arranged in parallel in sequence along the first direction. Both ends of each crossbeam plate are fixed to or separated from the enclosing frame 1 by a quick clamp 22 .

[0066] It can be known that the above-mentioned crimping piece 21 is set as a crossbeam plate, so that it is fixed to the periphery of the opening 13 of the enclosing frame 1 by using the quick clamps 22 at both ends.

[0067] Exemplarily, two or more crossbeam plates may be provided along the first direction, or may be installed at an angle relative to the opening 13, so as to block the opening 13 and fix the internal battery module; of course, one end may be rotatably installed on the periphery of the opening 13, and the other end may be detachably connected via a quick clip 22; therefore, the specific number, installation angle, and distribution method thereof may be adjusted and selected as needed, and this embodiment does not make any specific limitations thereon.

[0068] In another situation of this embodiment, the crossbeam plate and the enclosing frame 1 can be installed in conjunction with each other using a snap-fit ​​structure. The specific snap-fit ​​structure includes a clip and a clip hole that snap together. One of the clip and the clip hole is set on the enclosing frame 1, and the other of the clip and the clip hole is set on the crossbeam plate, thereby completing the snap-fit ​​fixation between the two.

[0069] Furthermore, the invention further comprises: a supporting plate 12 provided at one of the two ends of the enclosed frame 1 along the first direction.

[0070] It is not difficult to see that the support plate 12 provided at the other end of the enclosing frame 1 is used to support the shellless module inside along the first direction. At the same time, when there are debris on the production line tooling plate of the support plate 12 or contaminants are present during the transportation process, the battery module located inside the enclosing frame 1 is effectively isolated and protected.

[0071] Further, refer to Figure 4 and Figure 5, further comprising: a through opening 11 opened at one of the two ends of the enclosing frame 1 along the first direction, the through opening 11 being configured to be opposite to the support plate 12 and for the portion to be welded of the battery module inside the enclosing frame 1 to pass through.

[0072] It can be seen that by providing the through opening 11 on the enclosing frame 1, the part of the battery module to be welded is exposed, so that the welding assembly 4 can be close to or away from the part for welding or reset after completion.

[0073] In actual operation of this embodiment, reference Figure 4 and Figure 5 , and also includes: a positioning unit 5 arranged on the inner wall of the enclosing frame 1 opposite to the opening 13, and / or a side wall of the clamping unit 2 close to the opening 13, and the positioning unit 5 is configured to connect with the battery module entering the enclosing frame 1 to limit it.

[0074] It can be seen that the positioning unit 5 is used to facilitate positioning of the battery module entering the enclosed frame 1 .

[0075] More specifically, refer to Figure 4 and Figure 5 The positioning unit 5 includes: a positioning pin fixed to the enclosing frame 1 and / or the clamping unit 2, and a positioning block 51 fixed to the enclosing frame 1 and / or the clamping unit 2 and located next to the positioning pin. The positioning pin is configured to be connected to the pin hole on the top bracket of the battery module to be welded; the positioning block 51 is configured in plurality and is sequentially connected to the gap between two adjacent battery cells of the battery module.

[0076] Specifically, the positioning unit 5 can be set on the inner wall of the enclosing frame 1 opposite to the opening 13, or on the inner wall of the side of the above-mentioned beam plate close to the opening 13. The positioning pin is used to facilitate cooperation with the pin hole on the battery module, and the positioning block 51 is used to facilitate contact with the gap between the two battery cells, thereby realizing the position limitation of the battery module inside the enclosing frame 1.

[0077] For example, the above-mentioned positioning pins and positioning blocks 51 can be set at different positions and in different quantities as needed, which will not be described in detail in this embodiment.

[0078] In actual operation of this embodiment, reference Figure 2 and Figure 3 The supporting frame 3 includes: a supporting platform 31 configured to place the enclosing frame 1 after loading the battery module, two side panels 32 configured and symmetrically arranged at both ends of the supporting platform 31 along the second direction, and a limiting unit 33 installed on the supporting platform 31 and configured to fix the enclosing frame 1 to the supporting platform 31. The welding assembly 4 is slidably connected to the two side panels 32 along the third direction.

[0079] It can be seen that the support platform 31 is used to facilitate the placement of the enclosed frame 1, and it is fixed by the limit unit 33, and the two symmetrically arranged side panels 32 are used to facilitate the installation of the welding assembly 4, so that during actual operation, the welding assembly 4 can be moved along the third direction for welding or resetting.

[0080] On this basis, reference Figure 3 The limiting unit 33 includes: a limiting block 331 fixed to the supporting platform 31 and a quick installation clip 332, the limiting blocks 331 are configured to be at least three and respectively abut against the outer walls on both sides of the enclosing frame 1 along the second direction and the outer wall on one side along the first direction; the quick installation clip 332 is configured to be at least one and is connected to the outer wall on the other side of the enclosing frame 1 along the first direction to fix it.

[0081] Under this arrangement, one of the limit blocks 331 abuts against the outer wall of the enclosing frame 1 on one side along the first direction to limit it along the first direction; the other two limit blocks 331 abut against the outer walls of the enclosing frame 1 on both sides along the second direction to limit and fix it along the second direction; the quick installation clips 332 can be set as quick clips 22 and there are two of them. The two quick clips 22 are symmetrically distributed relative to the two sides of the enclosing frame 1 along the first direction. The two quick clips 22 are fixed to the enclosing frame 1 to limit it along the first direction and fix it; thereby limiting and fixing the enclosing frame 1 on all sides.

[0082] It should be noted that the above-mentioned limiting unit 33 can be selected as needed during actual operation. For example, it can be directly fixed on the two side panels 32. As long as the enclosing frame 1 can be fixed above the supporting platform 31, its specific structure is not a restrictive provision of this embodiment.

[0083] In one case of this embodiment, reference Figure 2 and Figure 3 The welding assembly 4 includes: a pressing plate 41 slidably connected to the two side plates 32 along the third direction, a driving member 42 fixed to the side plate 32, and a welding unit 43 installed on the side of the pressing plate 41 close to the supporting platform 31, the driving member 42 is configured to be at least one and the output end is connected to the pressing plate 41 to drive it to move back and forth along the third direction; the welding unit 43 is configured to contact the part to be welded of the battery module inside the enclosed frame 1 to weld it.

[0084] Under this arrangement, the driving member 42 can drive the crimping plate 41 to move along the third direction, thereby driving the welding unit 43 to approach or move away from the enclosing frame 1, and then welding the exposed part to be welded located in the enclosing frame 1, and then driving it back and reset along the third direction through the driving member 42.

[0085] It should be noted that the above-mentioned welding unit 43 can be a laser welding device. In actual use, the laser welding device is fixed to the side of the crimping plate 41 close to the support platform 31, and then the crimping plate 41 is pressed onto the part to be welded of the battery module, and the laser welding head is used to weld the tabs leading out of the battery cells in the battery module. After the welding action is completed, the driving part 42 drives the crimping plate 41 to return along the opposite path, thereby driving the welding unit 43 to reset and prepare for the next welding action.

[0086] Of course, the welding unit 43 may also be other types of welding devices as needed, and it only needs to be replaced with the crimping plate 41 . The specific structure thereof is not a restrictive provision of this embodiment.

[0087] For further reference, Figure 3 , and also includes: being configured as at least two supporting rods 44 that are respectively connected to the two side plates 32 in a sliding manner along the third direction; the top end of each supporting rod 44 is fixedly connected to one side of the crimping plate 41 close to the supporting platform 31.

[0088] In this arrangement, the support rod 44 is used to slide the pressing plate 41 , thereby further improving the stability of the pressing plate 41 during movement and ensuring smooth welding.

[0089] Exemplarily, four supporting rods 44 are configured and symmetrically arranged in pairs at both ends of the first plate.

[0090] Furthermore, the driving member 42 is configured as a cylinder and there are two of them, which are symmetrically distributed on the outer walls of the two side plates 32; by setting the above-mentioned driving member 42 as a cylinder, it is convenient to drive the supporting rod 44 and the crimping plate 41 to slide along the third direction.

[0091] It should be noted that, in addition to being configured as a cylinder, the above-mentioned driving member 42 can also be configured as a hydraulic rod, or adopt a screw-nut mechanism. Therefore, the specific number and configuration of the above-mentioned driving member 42 are not restrictive provisions of this embodiment.

[0092] In actual operation of this embodiment, reference Figure 5 and Figure 6 The enclosing frame 1 is formed by a plurality of panels connected to each other through hinges. The enclosing frame 1 is arranged in a manner of splicing a plurality of panels, which is more convenient and quick in actual installation and has strong practicality.

[0093] The above examples primarily illustrate the battery module welding jig of the present application. Although only some of the embodiments of the present application have been described, those skilled in the art will appreciate that the present application may be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments presented are to be considered illustrative rather than restrictive, and the present application may encompass various modifications and substitutions without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A battery module welding jig, characterized in that: include: An enclosing frame is configured to enclose the periphery of the battery module and expose the portion of the battery module to be welded; at least one side of the enclosing frame is provided with an opening for moving the battery module in or out; A clamping unit is provided on the enclosing frame outside the opening and is configured to press the battery module to fix it to the enclosing frame; A supporting frame is configured to support and fix the enclosed frame after the battery module is loaded; The welding assembly is slidably mounted on the support frame and is configured to be close to or away from the battery module to be welded so as to weld it or reset it after welding is completed.

2. A battery module welding jig according to claim 1, characterized in that: The clamping unit comprises: The crimping piece is detachably mounted on the periphery of the opening of the enclosing frame and is configured as at least one.

3. A battery module welding jig according to claim 2, characterized in that: The crimping parts are configured as cross-beam plates and two cross-beam plates are arranged in parallel in sequence along the first direction. Both ends of each cross-beam plate are fixed to or separated from the enclosing frame by quick clamps.

4. The battery module welding jig according to claim 1, characterized in that: Also includes: a supporting plate, disposed at one of the two ends of the enclosed frame along the first direction; The through opening is opened at the other of the two ends of the enclosing frame along the first direction, and is configured to be opposite to the supporting plate and to allow the portion to be welded of the battery module inside the enclosing frame to pass through.

5. The battery module welding jig according to claim 1, characterized in that: Also includes: The positioning unit is arranged on the inner wall of the enclosing frame opposite to the opening, and / or on the side wall of the clamping unit close to the opening, and is configured to connect with the battery module entering the enclosing frame to limit its position.

6. The battery module welding jig according to claim 5, characterized in that: The positioning unit includes: a positioning pin fixed to the enclosing frame and / or the clamping unit and configured to connect with a pin hole on the top bracket of the battery module to be welded; The positioning blocks are fixed to the enclosing frame and / or the clamping unit and are located beside the positioning pins. The positioning blocks are configured in multiples and are sequentially inserted into the gaps between two adjacent battery cells of the battery module.

7. The battery module welding jig according to claim 1, characterized in that: The supporting frame comprises: A supporting platform, configured to place the enclosed frame after loading the battery module; The side plates are configured as two and symmetrically arranged at both ends of the supporting platform along the second direction, and the welding assembly is slidably connected to the two side plates along the third direction; The limiting unit is installed on the supporting platform and is configured to fix the enclosed frame to the supporting platform.

8. The battery module welding jig according to claim 7, characterized in that: The limiting unit includes: The limiting blocks are fixed to the supporting platform and are configured in a number of at least three and respectively abut against the outer walls of both sides of the enclosed frame along the second direction and the outer wall of one side along the first direction; The quick installation clip is fixed to the supporting platform, is configured as at least one and is connected to the outer wall of the other side of the enclosing frame along the first direction to fix it.

9. The battery module welding jig according to claim 7, characterized in that: The welding assembly comprises: a crimping plate slidably connected to the two side plates along a third direction; a driving member fixed to the side plate, configured as at least one and having an output end connected to the crimping plate to drive the crimping plate to reciprocate along the third direction; The welding unit is installed on one side of the pressing plate close to the supporting platform and is configured to contact the to-be-welded portion of the battery module inside the enclosed frame to weld it.

10. The battery module welding jig according to claim 9, characterized in that: Also includes: The supporting rods are configured as at least two and are respectively connected to the two side plates in a sliding manner along the third direction; the top end of each supporting rod is fixedly connected to a side of the pressing plate close to the supporting platform.

11. The battery module welding jig according to claim 9, characterized in that: The driving members are configured as cylinders and are two in number. The two cylinders are symmetrically distributed on the outer walls of the two side plates.

12. The battery module welding jig according to claim 1, characterized in that: The enclosed frame is formed by a plurality of enclosing panels being joined together by hinges.

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