WO2023185349A1

WO2023185349A1 - Positioning mechanism and welding positioning device

Info

Publication number: WO2023185349A1
Application number: PCT/CN2023/078527
Authority: WO
Inventors: 王利锋; 杜彬; 孙一舟
Original assignee: 无锡先导智能装备股份有限公司
Priority date: 2022-04-01
Filing date: 2023-02-27
Publication date: 2023-10-05
Also published as: CN217412962U

Abstract

Disclosed are a positioning mechanism and a welding positioning device. The welding positioning device comprises a positioning mechanism, a pairing mechanism, and a carrying mechanism. The positioning mechanism comprises a rack, a battery cell positioning assembly, and an adapter piece positioning assembly. Two battery cells and adapter pieces thereof are positioned on the positioning mechanism, and then the two positioned battery cells are integrally carried to the pairing mechanism by means of the carrying mechanism to be paired with a top cover. Therefore, the positioning mechanism and the welding positioning device can improve the production efficiency.

Description

Positioning mechanism and welding positioning device

Technical field

The utility model relates to the technical field of lithium battery equipment, and in particular to a positioning mechanism and a welding positioning device.

Background technique

In the production process of lithium batteries, it is often necessary to weld the two cells and the top cover. The battery core is generally welded with an adapter piece, and the adapter piece is directly welded to the top cover. The top cover is provided with protruding poles. During welding, the poles need to be inserted into the connection holes of the adapter piece to achieve paired connections. Currently, the two battery cells are loaded separately, so the two battery cells and the adapter piece need to be positioned separately, and then paired with the cover plate after positioning. This will lead to lower production efficiency.

technical problem

The two battery cores are loaded separately, so the two battery cores and the adapter piece need to be positioned separately, and then paired with the cover plate after positioning. This will lead to lower production efficiency.

Technical solutions

Based on this, it is necessary to provide a positioning mechanism and welding positioning device that can improve production efficiency to address the above problems.

A positioning mechanism, including: a frame, which is provided with two carrier plates spaced apart along a first direction and a placement block located between the two carrier plates; the surface of the placement block forms a limiting member; a battery core The positioning component can position the battery core carried on the carrier board along the first direction and a second direction perpendicular to the first direction, and the two carrier boards can approach each other along the first direction. , until the adapter piece of the two battery cores resists the limiting member; and the adapter piece positioning assembly includes a positioning drive assembly and a positioning plate, the positioning plate is distributed on each of the placement blocks and is located on the third On both sides in the two directions, the positioning driving assembly can drive the positioning plate to resist the adapter piece in the second direction.

In one embodiment, the battery core positioning assembly includes a first positioning block, a second positioning block, a first driving member and a second driving member. The first positioning block is distributed on the carrier board and is located on the third On both sides of one direction, the first driving member can drive the first positioning block to resist the battery core along the first direction; the second positioning block is distributed on the carrier plate in the second direction. On both sides, the second driving member can drive the second positioning block to resist the battery core along the second direction.

In one embodiment, a protrusion is formed on one side of each positioning plate facing the placement block, and the positioning drive assembly can drive the positioning plate downward so that the protrusion presses the adapter piece. Hold on to the placement block.

In one embodiment, the limiting member is a protrusion extending along the second direction, the protruding portion is provided with a relief groove, and the protruding portion presses the adapter piece against the placement block. When, the protruding strip passes through the escape groove.

In one of the embodiments, a translational driving component is also included. The translational driving component can drive the two carrier boards to approach each other along the first direction until the two cells carried on the two carrier boards are The adapter piece resists the limiting member.

A welding positioning device, including: a positioning mechanism as described in any one of the above preferred embodiments; a pairing mechanism for carrying the top cover; and a transportation mechanism for positioning two batteries in the positioning mechanism Transport it to the pairing mechanism and pair it with the top cover.

In one of the embodiments, a limiting component is provided on the pairing mechanism, and the limiting component is used to limit the two cells and the adapter piece of the cell that are transported by the transport mechanism to the pairing mechanism. .

In one embodiment, the transport mechanism includes two clamping parts arranged at intervals and a holding component located between the two clamping parts. The two clamping parts are used to respectively clamp the two clamping parts. There are two battery cores on the carrier board, and the holding component can fix the adapter piece of the two battery cores.

In one embodiment, the holding assembly includes two sets of suction cups and two sets of positioning pins. The two sets of suction cups are used to suck the adapter sheets of two battery cells respectively. The two sets of positioning pins can respectively insert two In the connection hole of the battery cell adapter piece.

In one embodiment, the end of the positioning pin is in the shape of a truncated cone.

beneficial effects

The above-mentioned positioning mechanism and welding positioning device first place the two battery cores to be positioned on the two carrier boards respectively, and have their adapter sheets carried on the placement blocks. The battery core positioning assembly positions the battery cores along the first direction and the second direction, and after the positioning is completed, the carrier board drives the two battery cores to approach each other along the first direction until the adapter piece and the limiter of the two battery cores are The items contradict each other. Then, the positioning driving assembly drives the positioning plate to resist the adapter piece in the second direction, so that the adapter piece can be positioned in the second direction. In this way, the two battery cells and their adapter sheets will be positioned on the positioning mechanism, and then the two positioned battery cells will be transported as a whole to the pairing mechanism and paired with the top cover through the transport mechanism. Therefore, the above-mentioned positioning mechanism and welding positioning device can improve production efficiency.

Description of drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of a battery core in one embodiment of the present invention;

Figure 2 is a front view of the positioning mechanism in the preferred embodiment of the present utility model;

Figure 3 is a left side view of the positioning mechanism shown in Figure 2;

Figure 4 is a top view of the positioning mechanism shown in Figure 2;

Figure 5 is a front view of the positioning plate in the positioning mechanism shown in Figure 2;

Figure 6 is a top view of the positioning plate shown in Figure 5;

Figure 7 is a front view of the transport mechanism in the preferred embodiment of the present invention;

Figure 8 is a front view of the holding assembly in the transport mechanism shown in Figure 7;

FIG. 9 is a left side view of the holding assembly in the transport mechanism shown in FIG. 7 .

Embodiments of the utility model

In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to facilitate a thorough understanding of the present invention. However, the present utility model can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without violating the connotation of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below. limit.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" ", "radial direction", "circumferential direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or components must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms “above”, “above” and “above” the first feature of the second feature may mean that the first feature is directly above or diagonally above the second feature, Or simply means that the first feature has a higher level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Please refer to Figure 2. The present utility model provides a positioning mechanism 100. The positioning mechanism 100 is used to position two battery cores 20 to be welded.

As shown in FIG. 1 , the battery core 20 to be positioned is generally welded with an adapter piece 21 . Each battery core 20 is generally welded with two adapter pieces 21 , and the adapter piece 21 is provided with a connection hole 22 . During welding, it is necessary to match the connection hole 22 on the adapter piece 21 with the pole of the top cover.

Please refer to Figures 3 and 4 together. The positioning mechanism 100 in the preferred embodiment of the present invention includes a frame 110, a battery positioning component 120 and an adapter plate positioning component 130.

The frame 110 plays a supporting role and can be welded by metal rods and plates. The rack 110 is provided with two carrier plates 111 spaced apart along the first direction and a placement block 112 located between the two carrier plates 111 . The surface of the placement block 112 forms a limiting member 1121 .

The two carrier boards 111 are respectively used to carry two battery cores 20 to be positioned, and the sides of the two battery cores 20 provided with the adapter sheet 21 are opposite to each other. Moreover, when the battery cores 20 are carried on the carrier board 111, the adapter pieces 21 of the two battery cores 20 can both be carried on the placement block 112. Since the battery core 20 in this embodiment has two adapter pieces 21, two placement blocks 112 are provided between the two carrier boards 111, and the two placement blocks 112 are along the second direction perpendicular to the first direction. Interval settings. Specifically, the first direction refers to the left-right direction shown in FIG. 4 , and the second direction refers to the up-down direction shown in FIG. 4 .

The placement block 112 is fixed to the rack 110, so the placement block 112 can be used as a reference for positioning. The two carrier boards 111 can be installed on the rack 110 through guide rails and slide blocks, and can slide along the first direction.

The battery core positioning component 120 can position the battery core 20 carried on the carrier board 111 along the first direction and the second direction. Specifically, two groups of battery core positioning assemblies 120 are provided, and they are respectively used to position the battery cores 20 on the two carrier boards 111. The structures of the two groups of battery core positioning assemblies 120 can be exactly the same.

In this embodiment, the cell positioning assembly 120 includes a first positioning block 121, a second positioning block 122, a first driving member 123 and a second driving member 124. The first positioning block 121 is distributed on the carrier plate 111 in the first direction. on both sides, the first driving member 123 can It is enough to drive the first positioning block 121 to resist the battery core 20 along the first direction.

There are at least two first positioning blocks 121 and they are distributed on both sides of the carrier plate 111 . The first driving member 123 may be a cylinder, an electric cylinder, etc., and each first positioning block 121 may be driven by a first driving member 123 respectively. In addition, the first driving member 123 can also adopt a structure similar to a clamping jaw cylinder, so that the two first positioning blocks 121 can be driven synchronously. When the first positioning block 121 resists the battery core 20 along the first direction, the battery core 20 can be positioned in the first direction.

The second positioning blocks 122 are distributed on both sides of the carrier plate 111 in the second direction, and the second driving member 124 can drive the second positioning blocks 122 to resist the battery core 20 along the second direction. The structure of the second driving member 124 and the second positioning block 122 and the process of achieving positioning are the same as those of the first driving member 123 and the first positioning block 121, so no further description is given.

Further, the two carrier boards 111 can approach each other along the first direction until the adapter pieces 21 of the two battery cores 20 resist the limiting member 1121 . Since the position of the placement block 112 is fixed, when the adapter piece 21 of the two battery cells 20 resists the limiting member 1121, the relative position of the two battery cells 20 can be fixed, and the adapter piece 21 can be fixed. Positioning is achieved in the first direction.

Specifically, in this embodiment, the positioning mechanism 100 also includes a translation drive assembly (not shown). The translation drive assembly can drive the two carrier boards 111 to approach each other along the first direction until the two circuits carried on the two carrier boards 111 are moved closer to each other. The adapter piece 21 of the core 20 resists the limiting member 1121 . Translation drive components can be components such as cylinders, electric cylinders, and motor threaded screw pairs. The translation driving assembly can automatically bring the two carrier plates 111 closer to each other after receiving the instruction, which can improve the automation level of the positioning mechanism 100 .

The adapter piece positioning assembly 130 includes a positioning drive assembly 131 and a positioning plate 132. The positioning plates 132 are distributed on both sides of each placement block 112 in the second direction. The positioning drive assembly 131 can drive the positioning plate 132 to resist in the second direction. Adapter piece 21. The number of adapter sheet positioning components 130 is consistent with the number of placement blocks 112. Specifically, in this embodiment, there are two adapter sheet positioning components 130.

The positioning driving assembly 131 drives the positioning plate 132 to resist the adapter piece 21 in the second direction, so that the adapter piece 21 can be positioned in the second direction. In this way, the two battery cores 20 and their adapter pieces 21 will be positioned in the first direction and the second direction on the positioning mechanism 100 .

Please refer to FIGS. 5 and 6 together. In this embodiment, each positioning plate 132 is formed with a protruding portion 1321 on one side facing the placement block 112 . The positioning drive assembly 131 can drive the positioning plate 132 to descend, so that the protruding portion 1321 Press the adapter piece 21 onto the placement block 112 .

Specifically, the positioning drive assembly 131 can drive the positioning plate 132 to move in a third direction, which is perpendicular to the first direction and the second direction, that is, the direction perpendicular to the drawing plane as shown in FIG. 4 . When the adapter piece 21 is tilted during the positioning process, the positioning drive assembly 131 can drive the positioning plate 132 to descend so that the protruding portion 1321 presses the surface of the adapter piece 21 to flatten it. In this way, the positioning driving assembly 131 can also position the adapter piece 21 in the third direction.

Further, in this embodiment, the limiting member 1121 is a convex strip extending along the second direction, and the protruding portion 1321 is provided with There is an escape groove 1322. When the protruding portion 1321 presses the adapter piece 21 to the placement block 112, the protruding strip passes through the escape groove 1322. The contact area between the protrusions and the adapter piece 21 is larger, so the limiting effect on the adapter piece 21 is better. The avoidance groove 1322 can prevent the limiting member 1121 from limiting the protruding portion 1321 during the descending process, so that the protruding portion 1321 can press the adapter piece 21 against the surface of the placing block 112 .

In addition, the present invention also provides a welding positioning device (not shown). Please refer to FIG. 7 as well. The welding positioning device includes a positioning mechanism 100, a pairing mechanism (not shown) and a transportation mechanism 200.

The pairing mechanism is used to carry the top cover (not shown); after the two cells 20 to be positioned are positioned on the positioning mechanism 100, they can be transported to the pairing mechanism by the transport mechanism 200 and paired with the top cover. Pairing means that the poles on the top cover are respectively inserted into the connection holes 22 of the adapter sheets 21 of the two battery cells 20 . When the transport mechanism transfers the battery cells 20, the relative positions of the two battery cells 20 and their adapter pieces 21 remain unchanged, so the two battery cells 20 can be paired with the top cover on the pairing mechanism at the same time.

Moreover, the welding positioning device generally also includes a welding mechanism (not shown). After the two battery cores 20 are paired with the top cover, the welding mechanism welds the adapter piece 21 to the top cover.

In this embodiment, a limiting component (not shown) is provided on the pairing mechanism. The limiting component is used to limit the two battery cells 20 and the adapter piece 21 of the battery core 20 that are transported to the pairing mechanism by the transport mechanism 200 . . When the transport mechanism 200 transports the two positioned electric cores 20 to the pairing mechanism, the position of the two electric cores 20 and its adapter piece 21 is first fixed by the limiting component; after the fixing of the limiting component is completed, the transportation The mechanism 200 then releases the battery core 20 and its adapter piece 21, thereby preventing the relative positions of the two battery cores 20 from changing during the transfer process, thus ensuring smooth pairing of the battery core 20 and the top cover.

Please refer to FIGS. 8 and 9 together. In this embodiment, the transport mechanism 200 includes two clamping parts 210 arranged at intervals and a holding component 220 located between the two clamping parts 210 . The two clamping parts 210 For clamping the battery cores 20 carried on the two carrier boards 111 respectively, the holding assembly 220 can keep the adapter pieces 21 of the two battery cores 20 fixed relative to the battery cores 20 .

Specifically, the clamping member 210 can adopt a structure such as a clamping claw or a suction cup, as long as the battery core 20 can be grasped from the carrier plate 111 . The relative positions of the clamping member 210 and the holding assembly 220 remain fixed, and both can be fixedly installed on the bracket 230 of the transport mechanism 200 . When the battery core 20 is clamped by the clamping member 210, the holding assembly 220 fixes the adapter piece 21, so that the adapter piece 21 can be prevented from moving relative to the battery core 20 during transportation, thereby ensuring smooth connection with the top cover. pair.

Further, in this embodiment, the holding component 220 includes two sets of suction cups 221 and two sets of positioning pins 222. The two sets of suction cups 221 are used to suck the adapter sheets 21 of the two batteries 20 respectively. The two sets of positioning pins 222 can respectively Insert into the connection hole 22 of the adapter piece 21 of the two battery cells 20 .

Each group of suction cups 221 can be provided with one or more; the number of positioning pins 222 of each group is consistent with the number of connecting holes 22 on each adapter piece 21 . For example, in this embodiment, the adapter piece 21 is provided with two connection holes 22 , so each group of positioning pins 222 is provided with two. Moreover, the number and distribution of the positioning pins 222 are the same as the number and distribution of the poles on the top cover.

The end of the positioning pin 222 is in the shape of a truncated cone, which can serve as a guide, thereby facilitating the smooth insertion of the positioning pin 222 into the connecting hole 22 . When the transport mechanism 200 clamps the electric cores 20 from the positioning mechanism 100, the two clamping members 210 descend and clamp the two electric cores 20 respectively. At the same time, the holding assembly 220 lowers to the surface of the two adapter sheets 21 and moves the positioning pins. 222 are inserted into the corresponding connection holes 22 respectively, and the suction cup 221 absorbs the adapter piece 21; when placing the two clamped batteries 20 in the pairing mechanism, the transport mechanism 200 first lowers and aligns the positioning pin 222 with the one on the top cover. When the poles are against each other, the connection holes 22 and the poles can be aligned, and then the two batteries 20 are released, so that the poles of the top cover can be inserted into the corresponding connection holes 22, thereby successfully completing the pairing.

The above-mentioned positioning mechanism 100 and welding positioning device first place the two battery cores 20 to be positioned on the two carrier plates 111 respectively, and have the adapter piece 21 carried on the placement block 112 . The battery core positioning assembly 120 positions the battery core 20 along the first direction and the second direction, and after the positioning is completed, the carrier plate 111 drives the two battery cores 20 to approach each other along the first direction until the two battery cores 20 rotate. The connecting piece 21 resists the limiting member 1121 . Then, the positioning driving assembly 131 drives the positioning plate 132 to resist the adapter piece 21 in the second direction, so that the adapter piece 21 can be positioned in the second direction. In this way, the two battery cores 20 and their adapter sheets 21 will be positioned on the positioning mechanism 100, and then the two positioned battery cores 20 will be transported as a whole to the pairing mechanism through the transport mechanism 200 for pairing with the top cover. Therefore, the above-mentioned positioning mechanism 100 and welding positioning device can improve production efficiency.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims

A positioning mechanism is characterized by including:

The frame is provided with two carrier plates spaced apart along the first direction and a placement block located between the two carrier plates, with a limiting member formed on the surface of the placement block;

The battery core positioning component can position the battery core carried on the carrier board along the first direction and a second direction perpendicular to the first direction, and the two carrier boards can position the battery core along the first direction. Approach each other until the adapter pieces of the two battery cells resist the limiting member; and

The adapter piece positioning assembly includes a positioning drive assembly and a positioning plate. The positioning plates are distributed on both sides of each placement block in the second direction. The positioning drive assembly can drive the positioning plate along the desired direction. The second direction resists the adapter piece.
The positioning mechanism according to claim 1, characterized in that the battery core positioning assembly includes a first positioning block, a second positioning block, a first driving member and a second driving member, and the first positioning block is distributed on all The carrier board is located on both sides of the first direction, and the first driving member can drive the first positioning block to resist the battery core along the first direction; the second positioning block is distributed on the carrier board Located on both sides of the second direction, the second driving member can drive the second positioning block to resist the battery core along the second direction.
The positioning mechanism according to claim 1 or 2, characterized in that each positioning plate is formed with a protrusion on one side facing the placement block, and the positioning drive assembly can drive the positioning plate to descend, so that The protrusion presses the adapter piece to the placing block.
The positioning mechanism according to any one of claims 1 to 3, characterized in that the limiting member is a convex strip extending along the second direction, the protruding portion is provided with a relief groove, and the protruding portion is provided with a relief groove. When the adapter piece is pressed against the placement block, the protruding strip passes through the escape groove.
The positioning mechanism according to any one of claims 1 to 4, further comprising a translation drive assembly capable of driving the two carrier plates to approach each other along the first direction until they are loaded on The adapter pieces of the two battery cores of the two carrier boards resist the limiting members.
A welding positioning device, characterized by including:

The positioning mechanism according to any one of the above claims 1 to 5;

A mating mechanism for carrying the top cover;

A transport mechanism is used to transport the two battery cores positioned in the positioning mechanism to the pairing mechanism and pair them with the top cover.
The welding positioning device according to claim 6, characterized in that a limiting component is provided on the pairing mechanism, and the limiting component is used to prevent the two battery cells and batteries transported by the transporting mechanism to the pairing mechanism. The adapter piece of the core is used to limit the position.
The welding positioning device according to claim 6 or 7, characterized in that the transportation mechanism includes two clamping parts arranged at intervals and a holding component located between the two clamping parts, and the two clamping parts The pick-up piece is used to respectively clamp the electric cores carried on the two carrier boards, and the holding component can fix the adapter piece of the two electric cores.
The welding positioning device according to any one of claims 6 to 8, characterized in that the holding assembly includes two sets of suction cups and two sets of positioning pins, and the two sets of suction cups are used to respectively suck the transfer of two battery cores. piece, and the two sets of positioning pins can be inserted into the connection holes of the adapter piece of the two battery cells respectively.
The welding positioning device according to claim 9, wherein the end of the positioning pin is in the shape of a truncated cone.