CN220881134U - Clamp for welding connecting sheet - Google Patents

Abstract

The application relates to a clamp for welding connecting sheets. The jig for welding a connecting piece includes: the first clamping piece is used for limiting an installation position, and the installation position is used for fixing the battery cell; the second clamping piece is detachably connected with the first clamping piece, a first avoidance opening is formed in the second clamping piece, and when the connecting piece is aligned with the pole of the battery cell, the first avoidance opening can enable part of the connecting piece to be exposed for welding. According to the clamp for welding the connecting sheet, the connecting sheet and the electrode post of the battery cell can be pressed during welding, so that the effect of welding connection between the connecting sheet and the electrode post of the battery cell is improved, and the clamping efficiency and the welding efficiency are improved.

Description

Clamp for welding connecting sheet

Technical Field

The application relates to the technical field of energy storage of electric automobiles, in particular to a clamp for welding connecting sheets.

Background

At present, whether a power battery or an energy storage battery is formed, the shape of the battery is mainly a square aluminum shell. After the lithium battery is produced, assembled and manufactured, the performances of battery circulation, high and low temperature, charge and discharge and the like are required to be tested, safety testing is required, UN authentication is required to be performed and the like. The tested and authenticated batteries are all required to be welded with flexible connection sheets on the positive and negative electrode posts of the batteries, and the positive and negative electrode posts are respectively clamped on the flexible connection sheets connected with the positive and negative electrodes of the batteries during testing.

When the soft connection is welded, the soft connection sheet is fixed on the pole of the battery by using an adhesive tape to play a role in pre-fixing, then the pre-fixed battery is placed into a clamping tool for laser welding, and after the laser parameters are adjusted and the welding track is set, the welding is performed. The soft connecting sheet is fixed by sticking the adhesive tape on the four corners of the soft connecting sheet, so that the soft connecting sheet cannot be tightly fixed, and the positioning of the soft connecting sheet on the battery post is affected if the soft connecting sheet is touched during welding. And the soft connecting sheet is fixed by the adhesive tape and cannot be tightly pressed on the battery pole, so that the welding effect can be influenced, and the welding efficiency is low.

Disclosure of utility model

The application provides a clamp for welding a connecting sheet, which can compress the connecting sheet and a pole of a battery cell during welding, so that the effect of welding connection between the connecting sheet and the pole of the battery cell is improved, and the clamping efficiency and the welding efficiency are improved.

The jig for welding a connecting sheet according to the present utility model includes:

The first clamping piece is used for limiting an installation position, and the installation position is used for fixing the battery cell;

The second clamping piece is detachably connected with the first clamping piece, a first avoidance opening is formed in the second clamping piece, and when the connecting piece is aligned with the pole of the battery cell, the first avoidance opening can enable part of the connecting piece to be exposed for welding.

According to the clamp for welding the connecting piece, the connecting piece is arranged on the second clamping piece and is connected with the first clamping piece and the second clamping piece, the connecting piece is provided with the first limiting part, and the first limiting part is propped against the second clamping piece.

Optionally, the first spacing portion with connecting piece movably connects, still be equipped with the second spacing portion on the connecting piece, the second spacing portion is located the one side of first spacing portion deviating from first dress folder, first spacing portion with it is equipped with first elastic component to press from both sides between the second spacing portion.

Optionally, a first connecting portion is provided on the first clamping piece, a second elastic member is connected between the first limiting portion and the first connecting portion, and the second elastic member is detachably connected with the first connecting portion.

Optionally, the first clamping piece is provided with a first mounting hole, the second clamping piece is provided with a second mounting hole, the first mounting hole and the second mounting hole are spaced along a first direction, the central axis of the first mounting hole and the central axis of the second mounting hole coincide, and the connecting piece is simultaneously arranged in the first mounting hole and the second mounting hole in a penetrating mode.

Optionally, the first mounting hole has a first open opening extending through the first clip member in a second direction, and the second mounting hole has a second open opening extending through the second clip member in the second direction, wherein the second direction is perpendicular to the first direction.

Optionally, the length of the first limiting portion in the third direction is greater than the maximum width of the second mounting hole in the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

Optionally, the connecting piece include the bolt and with bolt threaded connection's nut, the nut support in the first clamping piece deviate from one side of second clamping piece, first spacing portion movably cover is located on the bolt.

According to the clamp for welding the connecting sheet, the gasket is further arranged between the first clamping piece and the second clamping piece, the second avoidance port is formed in the gasket, projection is carried out on the plane where the connecting sheet is located, and projection of the first avoidance port falls into projection of the second avoidance port or coincides with projection of the second avoidance port.

Optionally, the gasket is configured as one of a silicone member and a rubber member.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

The clamp can compress tightly the connecting piece and the electrode post of the battery cell during welding, promotes the effect of connecting piece and electrode post welded connection of the battery cell, is favorable to improving welded penetration width, reduces the risk of cold joint, promotes clamping efficiency and welding efficiency, improves welding quality.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is an exploded view of a fixture for welding a connection pad according to an embodiment of the present utility model;

FIG. 2 is a top view of a fixture for welding a connection pad according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a fixture for welding a connection pad according to an embodiment of the present utility model;

FIG. 4 is an elevation view of a fixture for welding a connecting sheet according to an embodiment of the present utility model;

Fig. 5 is a side view of a fixture for welding a connecting piece according to an embodiment of the present utility model.

Reference numerals illustrate:

The first clamping piece 10, the first mounting hole 11, the second clamping piece 20, the first avoiding opening 21, the second mounting hole 22, the second opening 23, the first avoiding opening 24, the connecting piece 30, the first limiting portion 31, the second limiting portion 32, the bolt 33, the nut 34, the first elastic piece 40, the gasket 50 and the connecting piece 60.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities also correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 and 2, a jig for welding a connecting piece 60 according to an embodiment of the present utility model includes a first clamping piece 10 and a second clamping piece 20.

Specifically, the first clamping member 10 defines a mounting location for fixing the battery cell; the second clamping member 20 is detachably connected to the first clamping member 10, and the second clamping member 20 is provided with a first avoiding opening 24, and when the connecting piece 60 is aligned with the terminal post of the battery cell, the first avoiding opening 24 can expose a part of the connecting piece 60 for welding.

In terms of expansion, the first clamping piece 10 defines a mounting position, and the mounting position is used for fixing the battery core, that is to say, when the terminal post of the battery core is required to be welded with the soft connecting piece 60, the battery core is fixed in the mounting position, the connecting piece 60 is aligned with the terminal post of the battery core, and then the second clamping piece 20 is connected with the first clamping piece 10, so that the second clamping piece 20 tightly presses the connecting piece 60 on the battery core, a laser welding track is set, welding parameters are adjusted, the connecting piece 60 and the battery core can be welded, the connecting piece 60 is in close contact with the terminal post of the battery core during welding, the improvement of the welding penetration width is facilitated, the risk of cold welding is reduced, and the welding quality is improved. After the terminal post of the battery cell is welded to the connecting piece 60, the first clamping piece 10 and the second clamping piece 20 can be disassembled to take out the battery cell.

According to the clamp for welding the connecting sheet 60, which is disclosed by the embodiment of the utility model, the clamp for welding the connecting sheet 60 can compress the connecting sheet 60 with the electrode post of the battery cell during welding, so that the effect of welding connection between the connecting sheet 60 and the electrode post of the battery cell is improved, the improvement of the welding penetration width is facilitated, the risk of cold welding is reduced, the clamping efficiency and the welding efficiency are improved, and the welding quality is improved.

In some embodiments, the mounting location is configured as a cavity, so that the surface of the other side of the battery cell except for one side of the terminal post can be limited by the first clamping piece 10, so that dislocation between the battery cell and the connecting piece 60 can be prevented, and welding precision is ensured.

As shown in fig. 1 to 3, according to the clamp for welding the connecting piece 60 of the embodiment of the present utility model, the second clamping member 20 is provided with the connecting piece 30, the connecting piece 30 connects the first clamping member 10 and the second clamping member 20, the connecting piece 30 is provided with the first limiting portion 31, and the first limiting portion 31 abuts against the second clamping member 20.

That is, the first clamping member 10 and the second clamping member 20 can be detachably connected together by the connecting member 30, and the first limiting portion 31 can limit the second clamping member 20, so that the connecting piece 60 can be pressed onto the battery cell by the second clamping member 20, and the connecting piece 60 can be tightly contacted with the terminal post of the battery cell during welding.

As shown in fig. 1 and 5, in some embodiments, the first limiting portion 31 is movably connected to the connecting member 30, a second limiting portion 32 is further provided on the connecting member 30, the second limiting portion 32 is located on a side of the first limiting portion 31 facing away from the first clamping member 10, and a first elastic member 40 is sandwiched between the first limiting portion 31 and the second limiting portion 32.

Specifically, the first elastic member 40 is clamped between the first limiting portion 31 and the second limiting portion 32, the pressure released by the first elastic member 40 can enable the first limiting portion 31 to move on the connecting piece 30 so as to tightly press against the second clamping piece 20, the compression degree between the connecting piece 60 and the battery cell is further increased, the risk of cold joint is reduced, and the welding quality is improved.

In some embodiments, the first resilient member 40 is configured as a spring.

In some embodiments, the first clip member 10 is provided with a first connecting portion, and a second elastic member is connected between the first limiting portion 31 and the first connecting portion, and the second elastic member is detachably connected with the first connecting portion.

The tension released by the second elastic member can enable the pressing limiting portion to move on the connecting member 30 so as to tightly press the second clamping member 20, so that the degree of compression between the connecting sheet 60 and the battery cell is further increased, the risk of cold joint is reduced, and the welding quality is improved.

In some embodiments, the second elastic member is configured as a tension spring.

As shown in fig. 1, in some embodiments, the first clamping member 10 is provided with a first mounting hole 11, the second clamping member 20 is provided with a second mounting hole 22, the first mounting hole 11 and the second mounting hole 22 are spaced along a first direction, a central axis of the first mounting hole 11 and a central axis of the second mounting hole 22 coincide, and the connecting member 30 is simultaneously inserted into the first mounting hole 11 and the second mounting hole 22.

According to the clamp for welding the connecting piece 60, the connecting piece 30 is limited and positioned through the first mounting hole 11 and the second mounting hole 22, so that the connecting piece 30 is detachably connected with the first clamping piece 10 and the second clamping piece 20 through the cooperation of the first mounting hole 11 and the second mounting hole 22, the central axis of the first mounting hole 11 and the central axis of the second mounting hole 22 are coincident, the connecting piece 30 can be positioned better, and dislocation between the first clamping piece 10 and the second clamping piece 20 is prevented.

As shown in fig. 1 and 2, in some embodiments, the first mounting hole 11 has a first open opening extending through the first clip member 10 in a second direction, and the second mounting hole 22 has a second open opening 23 extending through the second clip member 20 in a second direction, wherein the second direction is perpendicular to the first direction.

Thus, when the connector 30 needs to be snapped into the first mounting hole 11 and the second mounting hole 22, it can be snapped into the first mounting hole 11 via the first open mouth and snapped into the second mounting hole 22 via the second open mouth 23; when the terminal post of the battery cell is welded to the connecting piece 60, the first clamping piece 10 and the second clamping piece 20 need to be disassembled, and the battery cell needs to be taken out, and at this time, the connecting piece 30 is separated from the first opening and the second opening 23, so that the disassembly and assembly process between the connecting piece 30 and the first clamping piece 10 and the second clamping piece 20 can be simplified.

Wherein the first clip member 10 and the second clip member 20 are stacked in a first direction.

As shown in fig. 1, 2 and 5, in some embodiments, the length of the first limiting portion 31 in the third direction is greater than the maximum width of the second mounting hole 22 in the third direction, where the first direction, the second direction and the third direction are perpendicular to each other.

According to the clamp for welding the connecting piece 60 of the embodiment of the utility model, the first limiting portion 31 can be pressed against the second clamping piece 20, and the first limiting portion 31 is prevented from being clamped in the second mounting hole 22.

As shown in fig. 3-5, in some embodiments, the connecting member 30 includes a bolt 33 and a nut 34 screwed with the bolt 33, the nut 34 abuts against a side of the first clamping member 10 facing away from the second clamping member 20, and the first limiting portion 31 is movably sleeved on the bolt 33.

When the bolts 33 are engaged into the first and second mounting holes 11 and 22, the compression degree between the first and second clamping members 10 and 20 can be adjusted by rotating the nuts 34, so that the bolts 33 fix the first and second clamping members 10 and 20.

As shown in fig. 1, fig. 4 and fig. 5, according to the clamp for welding the connecting piece 60 of the embodiment of the present utility model, a gasket 50 is further disposed between the first clamping piece 10 and the second clamping piece 20, a second avoidance port is disposed on the gasket 50, and the projection of the first avoidance port 24 falls in the projection of the second avoidance port or coincides with the projection of the second avoidance port in the plane where the connecting piece 60 is located.

By providing the spacer 50, a protective effect on the connection piece 60 is achieved, preventing damage during the compression of the connection piece 60, wherein the connection piece 60 is insulated, thus preventing conduction. The projection of the first avoiding opening 24 falls on the projection of the second avoiding opening, so that the gasket 50 can be further prevented from moving and generating position deviation in the process of being compressed.

In a specific embodiment, the diameter of the first relief port 24 is 2mm smaller than the diameter of the second relief port.

In some embodiments, the gasket 50 is configured as one of a silicone member and a rubber member. Thus, the pad 50 has both soft and insulating characteristics, and can prevent conduction while protecting the connection piece 60.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A jig for welding a connecting piece, comprising:

The first clamping piece is used for limiting an installation position, and the installation position is used for fixing the battery cell;

The second clamping piece is detachably connected with the first clamping piece, a first avoidance opening is formed in the second clamping piece, and when the connecting piece is aligned with the pole of the battery cell, the first avoidance opening can enable part of the connecting piece to be exposed for welding.

2. The jig for welding connection pieces according to claim 1, wherein a connecting member is provided on the second clamping member, the connecting member connects the first clamping member and the second clamping member, a first limiting portion is provided on the connecting member, and the first limiting portion abuts against the second clamping member.

3. The fixture for welding connecting pieces according to claim 2, wherein the first limiting portion is movably connected with the connecting piece, a second limiting portion is further arranged on the connecting piece, the second limiting portion is located on one side, away from the first clamping piece, of the first limiting portion, and a first elastic piece is clamped between the first limiting portion and the second limiting portion.

4. A clamp for welding a connecting piece according to claim 3, wherein the first clamping member is provided with a first connecting portion, a second elastic member is connected between the first limiting portion and the first connecting portion, and the second elastic member is detachably connected with the first connecting portion.

5. The jig for welding connection sheets according to any one of claims 2 to 4, wherein a first mounting hole is provided in the first clamping member, a second mounting hole is provided in the second clamping member, the first mounting hole and the second mounting hole are spaced apart in a first direction, a central axis of the first mounting hole and a central axis of the second mounting hole coincide, and the connecting member is simultaneously inserted into the first mounting hole and the second mounting hole.

6. The clip for welding a connecting tab as defined in claim 5, wherein the first mounting hole has a first open opening extending through the first clip member in a second direction, and the second mounting hole has a second open opening extending through the second clip member in the second direction, wherein the second direction is perpendicular to the first direction.

7. The jig for welding connection sheets according to claim 6, wherein a length of the first stopper portion in a third direction is larger than a maximum width of the second mounting hole in the third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

8. The fixture for welding connecting pieces according to claim 7, wherein the connecting piece comprises a bolt and a nut in threaded connection with the bolt, the nut abuts against one side of the first clamping piece, which faces away from the second clamping piece, and the first limiting portion is movably sleeved on the bolt.

9. The clamp for welding the connecting sheet according to claim 1, wherein a gasket is further arranged between the first clamping piece and the second clamping piece, a second avoidance opening is formed in the gasket, the projection of the second avoidance opening is projected in the plane where the connecting sheet is located, and the projection of the first avoidance opening is located in the projection of the second avoidance opening or coincides with the projection of the second avoidance opening.

10. The jig for welding connection pads according to claim 9, wherein the gasket is configured as one of a silicone member and a rubber member.