Battery pack connecting piece welding clamp

Abstract

The utility model discloses a battery pack connecting piece welding clamp, and relates to the technical field of connecting piece machining auxiliary tools. Comprising an upper die and a lower die, the lower die comprises a plurality of limiting die sets, and each limiting die set is used for limiting one connecting piece set. The limiting module comprises a plurality of first limiting blocks which are distributed at intervals in the first direction, a plurality of second limiting blocks are arranged on one sides of the first limiting blocks, first limiting grooves are formed in the first limiting blocks, and a second limiting area is defined by the second limiting blocks; the upper die comprises a plurality of receding holes penetrating through the upper die, and a self-adaptive pressing module is arranged on the side, close to the lower die, of the upper die. A plurality of groups of self-adaptive pressing modules are arranged and are used for pressing the connecting sheet group; according to the technical scheme, it can be guaranteed that the connecting piece sets are attached more tightly, the welding quality is guaranteed, and the product production quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of connecting piece processing auxiliary tools, and particularly relates to a battery pack connecting piece welding clamp. BACKGROUND

[0002] In an energy storage battery pack product, an electric connecting piece is manufactured as a part matched with a corresponding battery pack, so that the same part is welded with positive and negative poles of adjacent cell strings in the energy storage battery pack, and positive and negative pole connection conduction between the cell strings is realized.

[0003] The structure of the electrode piece can be understood as including a trunk and a branch part, wherein the branch part is connected with the trunk part in a welding manner; in order to ensure the accuracy of welding, a corresponding welding clamp is generally provided to clamp the trunk and the branch part, so as to ensure the stability of the workpiece in the subsequent welding process and further ensure the welding quality. The traditional welding clamp includes an upper die and a lower die, the lower die is generally formed with a groove corresponding to the workpiece, the upper die is formed with an avoidance hole for laser avoidance, and the workpiece is clamped after the upper die and the lower die are aligned. However, some problems are found in actual application: first, the trunk part and the branch part of the connecting piece are made of metal materials, and the branch part is generally more, when a die simultaneously positions multiple branch parts, different branches have production tolerances, so that the upper die and the lower die cannot be completely clamped, at this time, there is a problem that part of the connecting piece is insufficiently clamped or not clamped, which affects the subsequent welding quality; second, the limiting groove for limiting the product cannot achieve very close limiting even when limiting the connecting piece of the same model due to the existence of the production tolerance, and therefore part of the workpiece is easily affected by external factors to appear position deviation, which affects the welding accuracy. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a battery pack connecting piece welding clamp to solve at least one of the above technical problems.

[0005] In order to solve the above technical problems, the application provides a battery pack connecting piece welding clamp, which comprises an upper die and a lower die.

[0006] A plurality of limiting die sets are arranged on the lower die, and each limiting die set is used for limiting a connecting piece group; the limiting die set comprises a plurality of first limiting blocks distributed at intervals in a first direction, a plurality of second limiting blocks are arranged on one side of the first limiting block, a first limiting groove is formed on the first limiting block, and the plurality of second limiting blocks surround a second limiting area.

[0007] The upper die comprises a plurality of avoidance holes penetrating the upper die, and a self-adapting pressing die set is arranged on one side of the upper die close to the lower die; the self-adapting pressing die set is provided with a plurality of groups and is used for pressing the connecting piece group.

[0008] In the implementation process, the staff or the manipulator places the connecting piece group on the lower mold, wherein the connecting piece group can be understood as being composed of two parts, including the main connecting piece and the branch connecting piece, and generally the main connecting piece is placed on the bottom layer first, and then the branch connecting pieces are stacked on multiple positions of the main connecting piece, wherein the first limiting block, the second limiting block and the lower mold itself cooperate to realize the positioning and limiting of the main connecting piece and the branch connecting piece, so as to ensure the basic stability of the position, and then the upper mold is matched and matched with the lower mold by manual or mechanical driving; in the present scheme, the upper mold is provided with a self-adaptive compression mold group, which can act on the branch connecting piece, so as to make the branch connecting piece compress the main connecting piece to realize the close connection of the two, and then the laser passes through the clearance hole of the upper mold and acts on the welding point of the main connecting piece and the branch connecting piece to realize the close welding of the two; it can be understood that the self-adaptive compression mold group is provided with a plurality of groups, and further understood that a plurality of groups are provided corresponding to the branch connecting piece, and each branch connecting piece is compressed and fixed by a group of self-adaptive compression mold groups, so as to ensure that the branch connecting piece and the main connecting piece are matched more closely; in addition, the clearance hole formed by the upper mold is used for the laser to pass through, and when the laser incidence line is not opposite, it cannot pass through the mold for welding, so as to effectively protect the product, and at the same time improve the accuracy of the welding point and the welding quality.

[0009] Preferably, the compression mold group comprises two compression units, and the two compression units are oppositely arranged on both sides of the clearance hole.

[0010] The compression unit comprises a compression block, an abutting block, an elastic member and a limiting member, a first accommodating groove suitable for accommodating the elastic member is formed in the upper mold, the elastic member is arranged between the limiting member and the compression block, one end of the abutting block is connected with the compression block, and the other end is suitable for abutting on the limiting member, one end of the elastic member abuts on the first accommodating groove, and the other end abuts on the abutting block and causes the compression block to move close to the lower mold.

[0011] In the implementation process, the two compression units are oppositely arranged and located on both sides of the clearance hole, and further understood as being located on both sides of the welding point, so that the main connecting piece and the branch connecting piece near the welding point can be better matched, and the stability of welding is ensured; further, when the upper mold and the lower mold are matched, the compression block can abut on the branch connecting piece to realize compression, and when the upper mold and the lower mold are further matched, the compression block moves and further drives the abutting block to move, and the abutting block compresses the elastic member, so that the compression block can tightly compress the branch connecting piece, and since each branch connecting piece has a corresponding self-adaptive compression mold group, the production tolerance of different branch connecting pieces or main connecting pieces can be well adapted by using this way, the good matching is realized, and the welding quality is improved.

[0012] Preferably, a second limiting groove is formed in the upper die, and an end of the pressing block away from the lower die is adapted to extend into the second limiting groove.

[0013] In the implementation process, the second limiting groove can limit the movement of the pressing block, thereby limiting the movement path of the pressing block, so that the pressing and resetting are better achieved.

[0014] Preferably, the limiting member comprises a threaded rod portion and an abutting portion.

[0015] A threaded hole is formed in the upper die and threadedly cooperates with the threaded rod portion, and the abutting portion is arranged at an end of the threaded rod portion.

[0016] In the implementation process, the limiting member can be understood as limiting the abutting block. One end of the elastic member abuts against the end face of the upper die, and the other end abuts against the abutting block. When the elastic member resets the abutting block, the abutting block may be separated. At this time, the abutting portion of the limiting member can limit the abutting block to avoid separation. The threaded rod portion can adjust the distance between the abutting portion and the end face of the upper die to disassemble and adjust according to actual needs.

[0017] Preferably, a second accommodating groove is formed between the first limiting block and the second limiting block in the lower die, and a magnetic attraction unit is arranged in the second accommodating groove.

[0018] In the implementation process, the second accommodating groove is arranged in the lower die to accommodate the magnetic attraction unit. The magnetic attraction unit can be used to attract and fix the connecting piece. In combination with the first limiting block and the second limiting block, the connecting piece can be better fixed, the probability of deviation can be reduced, the welding accuracy can be improved, and the product welding quality can be improved.

[0019] Preferably, each limiting module further comprises two third limiting blocks, the third limiting blocks are oppositely arranged and close to the side of the lower die, and a third limiting groove is formed in the third limiting block.

[0020] In the implementation process, it can be understood that the third limiting groove in the third limiting block can limit the terminal, and the terminal can be understood as part of the connecting piece group.

[0021] Preferably, a first avoiding groove is formed in the lower die.

[0022] In the implementation process, the first avoiding groove can facilitate the worker to take and place the column connecting piece, improve the convenience of taking and placing the workpiece, and improve the work efficiency.

[0023] Preferably, a positioning column is arranged in the lower die, and a positioning groove adapted to the positioning column is arranged in the upper die, or

[0024] A positioning column is arranged in the upper die, and a positioning groove adapted to the positioning column is arranged in the lower die.

[0025] In the implementation process, the upper die and the lower die are respectively provided with adaptive positioning columns and positioning grooves, and the positioning columns and the positioning grooves can ensure the accuracy of splicing.

[0026] Preferably, a second avoidance groove is formed on the sidewall of the upper die.

[0027] In the implementation process, the second avoidance groove can provide a better force point for the staff, facilitating the staff to control the disengagement of the upper die and the lower die, improving the operation convenience and work efficiency.

[0028] Compared with the prior art, the beneficial effects of the present application are that in the present scheme, the upper die is provided with a self-adaptive compression mold group, which can act on the branch connecting piece, so as to make the branch connecting piece compress the main connecting piece to realize the close connection of the two, and then the laser passes through the avoidance hole of the upper die and acts on the welding point of the main connecting piece and the branch connecting piece to realize the close welding of the two; it can be understood that the self-adaptive compression mold group is provided with multiple groups, and it can be further understood that multiple groups are provided corresponding to the branch connecting piece, and each branch connecting piece is fixed by a group of self-adaptive compression mold groups, so as to ensure that the branch connecting piece is more closely attached to the main connecting piece; in addition, the avoidance hole formed by the upper die is used for the laser to pass through, and when the laser incidence line is not correct, it cannot pass through the mold for welding, so as to effectively protect the product, improve the accuracy of the welding point, and improve the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 is a schematic diagram of the overall structure of one embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of the lower die of one embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the structure of the lower die of one embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the structure of the lower die of one embodiment of the present application;

[0034] Figure 5 is a partial structure schematic diagram of the upper die of one embodiment of the present application;

[0035] 10, lower die; 11, first limiting block; 111, first limiting groove; 12, second limiting block; 121, second limiting area; 13, second accommodating groove; 131, magnetic attraction unit; 14, third limiting block; 141, third limiting groove; 15, first avoiding slot; 16, positioning column; 161, positioning groove; 20, upper die; 21, avoiding hole; 22, second avoiding slot; 30, pressing unit; 31, pressing block; 311, second limiting groove; 32, abutting block; 33, elastic piece; 331, first accommodating groove; 34, limiting piece; 341, abutting part; 342, threaded rod part; 41, main connecting sheet; 42, branch connecting sheet; 43, terminal;

[0036] C1, first direction. DETAILED DESCRIPTION

[0037] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be understood by those skilled in the art that the present application can be practiced without the specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure aspects of the present application. Also, the description is meant to be taken in a descriptive sense and not a restrictive one. For example, specific fabrication and reagent conditions are given herein, but one skilled in the art will recognize that other conditions can be equally as effective, or that some conditions can be varied or modified.

[0038] It should be noted that all directional references (e.g., upper, lower, left, right, front, rear, behind, behind, etc.) are in relation to the exemplary embodiment of the application, as shown in the drawing figures, and are used only for the purpose of this description.

[0039] In addition, throughout this application the use of "a" or "an" to describe a singular quantity of an element should not be construed as limiting of a quantity or number of the described element unless otherwise expressly limited by the context of the description. Further, the use of "first", "second", "third", etc. to describe a particular element is only made for ease of description and is not to be construed as an ordering of the elements unless otherwise expressly limited by the context of the description. Further, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0040] In order to further understand the utility model content, characteristics and effects of the present application, the following examples are given, and the detailed description is as follows:

[0041] Embodiment

[0042] The structure of the electrode sheet can be understood as including a trunk and a branch part, wherein the branch part is connected with the trunk part by welding; in order to ensure the accuracy of welding, a corresponding welding clamp is generally provided to clamp the trunk and the branch part, so as to ensure the stability of the workpiece during the subsequent welding process, and thus ensure the welding quality. The traditional welding clamp includes an upper die and a lower die, the lower die is generally formed with a groove corresponding to the workpiece, and the upper die is formed with an avoidance hole for laser avoidance. The upper die and the lower die are aligned to clamp the workpiece, and some problems are found in actual application: first, the trunk part and the branch part of the connecting sheet are made of metal material, and the branch part is generally more. When a die simultaneously positions multiple branch parts, different branches have production tolerances, which causes the upper die and the lower die to be unable to be completely clamped, at this time, there is a problem of insufficient or no clamping of part of the connecting sheet, which affects the subsequent welding quality; second, the limiting groove for limiting the product cannot achieve very close limiting even when limiting the same type of connecting sheet due to the existence of production tolerances, therefore, part of the workpiece is easily affected by external factors to appear position deviation, which affects the welding accuracy; in order to solve the above technical problems, the embodiment provides the following technical solutions:

[0043] Specifically, please refer to Figures 1-5 The embodiment provides a battery pack connecting sheet welding clamp, which comprises an upper die 20 and a lower die 10.

[0044] Specifically, the lower die 10 comprises a plurality of limiting die groups, and each limiting die group is used for limiting a connecting sheet group; please refer to Figure 2 In one embodiment, the limiting die group is provided with two groups and is arranged side by side.

[0045] Specifically, the limiting die group comprises a plurality of first limiting blocks 11 distributed at intervals along a first direction, a plurality of second limiting blocks 12 are arranged on one side of the first limiting block 11, a first limiting groove 111 is formed on the first limiting block 11, and the plurality of second limiting blocks 12 surround a second limiting area 121.

[0046] Further, the upper die 20 comprises a plurality of avoidance holes 21 penetrating through the upper die 20, and a self-adaptive pressing die group is arranged on one side of the upper die 20 close to the lower die 10; the self-adaptive pressing die group is provided with a plurality of groups and is used for pressing the connecting sheet group;

[0047] In the above scheme, the staff or the manipulator puts the connecting piece group on the lower mold 10, wherein the connecting piece group can be understood as being composed of two parts, including the main connecting piece 41 and the branch connecting piece 42, and generally the main connecting piece 41 is placed on the bottom layer first, and then the branch connecting piece 42 is stacked on multiple positions on the main connecting piece 41, wherein the first limiting block 11, the second limiting block 12 and the lower mold 10 itself cooperate to realize the positioning and limiting of the main connecting piece 41 and the branch connecting piece 42, and ensure the basic stability of the position, and then the upper mold 20 is matched with the lower mold 10 by artificial or mechanical driving; in the present scheme, the upper mold 20 is provided with a self-adaptive compression mold group, which can act on the branch connecting piece 42, so as to make the branch connecting piece 42 compress the main connecting piece 41 to realize the close connection of the two, and then the laser passes through the clearance hole 21 of the upper mold 20 and acts on the welding point of the main connecting piece 41 and the branch connecting piece 42 to realize the close welding of the two; it can be understood that the self-adaptive compression mold group is provided with multiple, and it can be further understood that multiple are provided corresponding to the branch connecting piece 42, and each branch connecting piece 42 is compressed and fixed by a group of self-adaptive compression mold groups, so as to ensure that the branch connecting piece 42 and the main connecting piece 41 are more closely matched; in addition, the clearance hole 21 formed by the upper mold 20 is used for the laser to pass through, and when the laser incidence line is not opposite, it cannot pass through the mold for welding, so as to effectively protect the product, and at the same time improve the accuracy of the welding point and the welding quality.

[0048] Specifically, please refer to Figure 5 , the compression mold group includes two compression units 30, and the two compression units 30 are oppositely arranged on both sides of the clearance hole 21;

[0049] Specifically, the compression unit 30 includes a compression block 31, an abutting block 32, an elastic piece 33 and a limiting piece 34, the upper mold 20 forms a first accommodating groove 331 suitable for accommodating the elastic piece 33, the elastic piece 33 is arranged between the limiting piece 34 and the compression block 31, one end of the abutting block 32 is connected with the compression block 31, and the other end is suitable for abutting on the limiting piece 34, one end of the elastic piece 33 abuts on the first accommodating groove 331, and the other end abuts on the abutting block 32 and makes the compression block 31 close to the lower mold 10;

[0050] In the above scheme, the two pressing units 30 are oppositely arranged, respectively located on both sides of the avoidance hole 21, and further understood as being located on both sides of the welding point, so that the position near the welding point can be better adhered to the main connecting piece 41 and the branch connecting piece 42, and the stability of welding is ensured; further, when the upper die 20 and the lower die 10 are adhered, the pressing block 31 can abut on the branch connecting piece 42 to achieve pressing, when the upper die 20 and the lower die 10 are further adhered, the pressing block 31 moves and further drives the abutting block 32 to move, the abutting block 32 compresses the elastic piece 33, and the pressing block 31 can tightly press the branch connecting piece 42, because each branch connecting piece 42 has a corresponding self-adaptive pressing module, therefore, the production tolerance of different branch connecting pieces 42 or main connecting pieces 41 can be well adapted by using this way, good adhesion is achieved, and the welding quality is improved.

[0051] Specifically, the upper die 20 is formed with a second limiting groove 311, and one end of the pressing block 31 away from the lower die 10 is adapted to extend into the second limiting groove 311.

[0052] In the above scheme, the second limiting groove 311 can limit the movement of the pressing block 31, thereby limiting the movement path of the pressing block 31, so that the pressing and resetting can be better achieved.

[0053] Specifically, the limiting piece 34 includes a threaded rod portion 342 and an abutting portion 341.

[0054] Further, the upper die 20 is formed with a threaded hole (not shown in the figure) threadedly matched with the threaded rod portion 342, and the abutting portion 341 is arranged at the end of the threaded rod portion 342.

[0055] In the above scheme, the limiting piece 34 can be understood as limiting the abutting block 32, one end of the elastic piece 33 abuts on the end face of the upper die 20, and the other end abuts on the abutting block 32; when the elastic piece 33 resets, it may be detached, at this time, the abutting portion 341 of the limiting piece 34 can limit the abutting block 32 to avoid detachment; and the threaded rod portion 342 can adjust the distance between the abutting portion and the end face of the upper die 20, so as to be disassembled and adjusted according to actual needs.

[0056] Specifically, the second accommodating groove 13 is formed between the first limiting block 11 and the second limiting block 12 of the lower die 10, and the magnetic attraction unit 131 is arranged in the second accommodating groove 13.

[0057] In the above scheme, the second accommodating groove 13 is arranged on the lower die 10 for accommodating the magnetic attraction unit 131, the magnetic attraction unit 131 can be used for adsorbing and fixing the connecting piece, and in cooperation with the first limiting block 11 and the second limiting block 12, the connecting piece can be better fixed, the probability of deviation is reduced, the welding precision is improved, and the product welding quality is improved.

[0058] Specifically, each limiting module further comprises two third limiting blocks 14, which are oppositely arranged and close to the side of the lower die 10, and a third limiting groove 141 is formed on each third limiting block 14.

[0059] In the above scheme, it can be understood that the third limiting groove 141 on the third limiting block 14 can limit the terminal 43, and the terminal 43 can be understood as part of the connecting piece group.

[0060] Specifically, the first emptying groove 15 is formed transversely in the lower die 10.

[0061] In the above scheme, the first emptying groove 15 can facilitate the work staff to take and place the column connecting piece, improve the convenience of taking and placing the workpiece, and improve the work efficiency.

[0062] Specifically, the positioning column 16 is arranged on the lower die 10, and the positioning groove 161 adapted to the positioning column 16 is arranged on the upper die 20, or in another embodiment,

[0063] The positioning column 16 is arranged on the upper die 20, and the positioning groove 161 adapted to the positioning column 16 is arranged on the lower die 10.

[0064] In the above scheme, the upper die 20 and the lower die 10 are respectively provided with the adapted positioning column 16 and the positioning groove 161, and the positioning column 16 and the positioning groove 161 can ensure the accuracy of splicing.

[0065] Specifically, the second emptying groove 22 is formed on the side wall of the upper die 20.

[0066] In the above scheme, the second emptying groove 22 can provide a better force point for the work staff, facilitate the work staff to control the upper and lower dies 10 to be separated, improve the operation convenience, and improve the work efficiency.

[0067] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment are within the scope of the technical solution of the present application.

Claims

1. A battery pack tab welding fixture, characterized by: The upper die and the lower die are included; A plurality of limiting die sets are included on the lower die, each of which is used for limiting a connecting piece set; the limiting die set includes a plurality of first limiting blocks distributed along a first direction, a plurality of second limiting blocks are arranged on one side of the first limiting block, a first limiting groove is formed on the first limiting block, and a second limiting area is formed by the plurality of second limiting blocks; The upper die includes a plurality of through holes, and an adaptive compression die set is arranged on one side of the upper die close to the lower die; the adaptive compression die set includes a plurality of groups and is used for compressing the connecting piece set.

2. The battery pack tab welding fixture of claim 1, wherein: The compression die set includes two compression units, and the two compression units are arranged on both sides of the through hole; The compression unit includes a compression block, an abutting block, an elastic member, and a limiting member; a first accommodating groove is formed on the upper die and is adapted to accommodate the elastic member; the elastic member is arranged between the limiting member and the compression block; one end of the abutting block is connected with the compression block, and the other end is adapted to abut on the limiting member; one end of the elastic member abuts on the first accommodating groove, and the other end abuts on the abutting block and causes the compression block to move close to the lower die.

3. The battery pack tab welding fixture of claim 2, wherein: A second limiting groove is formed on the upper die, and one end of the compression block away from the lower die is adapted to extend into the second limiting groove.

4. The battery pack tab welding fixture of claim 2, wherein: The limiting member includes a threaded rod portion and an abutting portion; A threaded hole is formed on the upper die and is adapted to threadedly cooperate with the threaded rod portion; and the abutting portion is arranged at the end of the threaded rod portion.

5. The battery pack tab welding fixture of any one of claims 1-4, wherein: A second accommodating groove is formed between the first limiting block and the second limiting block on the lower die, and a magnetic attraction unit is arranged in the second accommodating groove.

6. The battery pack tab welding fixture of claim 5, wherein: Each limiting die set further includes two third limiting blocks, which are arranged opposite to each other and close to the side of the lower die; and a third limiting groove is formed on the third limiting block.

7. The battery pack tab welding fixture of claim 5, wherein: A first avoiding groove is formed on the lower die.

8. The battery pack tab welding fixture of claim 5, wherein: A positioning column is arranged on the lower die, and a positioning groove is arranged on the upper die and is adapted to the positioning column, or A positioning column is arranged on the upper die, and a positioning groove is arranged on the lower die and is adapted to the positioning column.

9. The battery pack tab welding fixture of claim 5, wherein: A second avoiding groove is formed on the side wall of the upper die.

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