New energy battery connecting piece positioning and welding clamp

Abstract

The utility model discloses a new energy battery connecting piece positioning welding clamp which comprises a connecting piece positioning clamp and bottom plates arranged on the two sides of the connecting piece positioning clamp, the bottom plates are used for installing battery cells, a plurality of mutually symmetrical grooves are formed in the two ends of the connecting piece positioning clamp, and the grooves are used for clamping the connecting piece positioning clamp. Each groove forms a step, the multiple steps located at the same end of the connecting piece positioning clamp form a continuous step structure, and the outer contour of each step corresponds to one type of connecting piece. The utility model provides a new energy battery connecting piece positioning welding clamp which can be suitable for connecting pieces of various models, a positioning tool clamp does not need to be replaced, the configuration number of the tool clamp and the remodeling operation frequency are effectively reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy battery manufacturing, and in particular relates to a new energy battery connecting piece positioning welding fixture. Background Art

[0002] Common new energy batteries include lithium-ion batteries and sodium-ion batteries. Lithium-ion batteries are secondary batteries (rechargeable batteries) that rely mainly on the movement of lithium ions between the positive and negative electrodes to work. During the charge and discharge process, Li+ is intercalated and deintercalated between the two electrodes: during charging, Li+ is deintercalated from the positive electrode and intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state. The opposite is true during discharge.

[0003] In addition, sodium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of sodium ions between the positive and negative electrodes to work, which is similar to the working principle of lithium-ion batteries;

[0004] Existing sodium-ion batteries or lithium-ion batteries often use single-cell, dual-cell, and multi-cell manufacturing processes. In the dual-cell manufacturing process, the AB cell welding process must be used. However, the current welding fixtures are only suitable for a single type of connecting piece. When replacing connecting pieces of different types, the positioning fixtures must be replaced simultaneously, resulting in a long cycle time for model change and debugging, which affects production efficiency and has high labor intensity and production safety hazards. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a new energy battery connecting piece positioning welding fixture, which can be applicable to various types of connecting pieces without the need to replace the positioning tooling fixture, effectively reducing the number of tooling fixture configurations and the frequency of changing operations, thereby improving production efficiency.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A new energy battery connecting piece positioning welding fixture comprises a connecting piece positioning fixture and a base plate arranged on both sides of the connecting piece positioning fixture, the base plate is used to install a battery cell, and a plurality of mutually symmetrical grooves are provided at both ends of the connecting piece positioning fixture, each of the grooves forms a step, and the plurality of steps located at the same end of the connecting piece positioning fixture form a continuous step structure, and the outer contour of each step corresponds to a connecting piece of a model.

[0008] In one embodiment, a side guard strip is further provided on one side of the bottom plate. Through this embodiment, the battery cell is limited, which facilitates the rapid positioning of the battery cell when the battery cell is placed on the bottom plate, thereby improving production efficiency.

[0009] In one embodiment, a support assembly extending in a vertical direction is further provided on one side of the base plate away from each other. According to this embodiment, the support assembly is provided to facilitate sending the connecting piece and the battery cell provided on the base plate to the welding device for welding.

[0010] In one embodiment, the support assembly includes a first side panel and a second side panel, the first side panel and the second side panel both extend in a vertical direction, the first side panel is connected to the bottom of the base plate, the second side panel is connected to the side wall of the first side panel, and the second side panel can move up and down along the side wall of the first side panel. Through this embodiment, that is, the first side panel is connected to the bottom of the base plate, and the second side panel can move along the first side panel, so that the height of the support assembly can be adjusted, which is convenient for adjusting the height of the support assembly according to the actual processing environment and the position of the welding device, and facilitating the welding of the battery cell and the connecting sheet.

[0011] In one embodiment, the side guard strip includes a blocking portion for contacting the side wall of the battery cell and a limiting portion vertically connected to the blocking portion, the blocking portion is arranged at the edge of the bottom plate, and the limiting portion is located on the outside of the bottom plate and is used to contact the top corner of the battery cell. Through this embodiment, the blocking portion and the limiting portion of the side guard strip can limit the side wall and top corner of the battery cell, so that the operator can quickly complete the precise positioning and arrangement of the battery cell by gradually moving the battery cell from the outside to the inside until it contacts the side guard strip, thereby improving production efficiency.

[0012] In one embodiment, a strip hole is formed on the second side panel, and a corresponding connecting hole is formed on the first side panel. The second side panel is connected to the first side panel via a connecting bolt passing through the strip hole. According to this embodiment, the connecting bolt is passed through the connecting hole and the strip hole. When the height of the supporting assembly needs to be adjusted, the second side panel is moved up and down, and the connecting bolt moves in the strip hole. After the second side panel moves to the target position, the position of the second side panel can be fixed by tightening the connecting bolt.

[0013] In one embodiment, a transfer hole is further provided on the second side plate, and the transfer hole is located below the strip hole. Through this embodiment, it is convenient to send the battery cell and the connecting piece into the welding device through the transfer hole on the second side plate for welding, thereby improving the convenience of operation.

[0014] In one embodiment, the transfer hole extends in a direction parallel to the bottom edge of the second side plate. Through this embodiment, the extension direction of the transfer hole is parallel to the bottom edge of the second side plate, which makes it convenient for the operator to grasp the entire clamp by hand, thereby further improving the convenience during operation.

[0015] In one embodiment, a plurality of the grooves are distributed at both ends of the connecting piece positioning fixture along the positioning center of the connecting piece positioning fixture. Through this embodiment, the grooves at both ends of the connecting piece positioning fixture are symmetrically arranged along its positioning center, which facilitates the same type of connecting pieces to be arranged on the connecting piece positioning fixture and welded with the current collectors of the battery cells on both sides.

[0016] The beneficial effects of the utility model are:

[0017] (1) It can be applied to various types of connecting pieces without the need to replace the positioning fixtures, effectively reducing the number of fixture configurations and the frequency of model change operations, thereby improving production efficiency;

[0018] (2) The sidewall strips provided on one side of the bottom plate can limit the position of the battery cells, making it convenient to quickly and accurately position the battery cells when placing them on the bottom plate, thereby improving production efficiency;

[0019] (3) A support assembly is connected to the bottom of the base plate, and the height of the support assembly is adjustable, so that the height of the support assembly can be adjusted according to the actual processing environment and the position of the welding device, so as to facilitate welding of the battery cell and the connecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0021] in:

[0022] Figure 1 A schematic diagram of the internal structure of a new energy battery is shown;

[0023] Figure 2 The structural schematic diagram of the utility model is shown;

[0024] Figure 3 A schematic diagram showing the utility model is provided with various connecting pieces of different types;

[0025] Figure 4 A schematic diagram showing the welding of the connecting piece and the battery core of the utility model is shown;

[0026] Figure 5 A schematic diagram showing the structure of the connection piece positioning fixture of the utility model is shown;

[0027] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0028] Reference numerals:

[0029] 1-top cover, 2-connecting piece, 3-battery cell, 4-aluminum shell, 5-connecting piece positioning fixture, 6-edge strip, 7-bottom plate, 8-first side plate, 9-second side plate, 10-upper welding head, 11-lower welding head, 12-transfer hole, 21-first connecting piece, 22-second connecting piece, 23-third connecting piece, 31-first battery cell, 32-second battery cell. DETAILED DESCRIPTION

[0030] The utility model will be further described below in conjunction with the accompanying drawings.

[0031] In the dual-cell assembly process, Figure 1 As shown, the battery cell 3 is formed by welding the first battery cell 31 and the second battery cell 32 to the connecting piece, and then bending and overlapping. The battery cell 3 is arranged in the aluminum shell 4, and a top cover 1 is arranged on the top. The double battery cell usually adopts the AB battery cell welding process. When replacing different types of connecting pieces, the positioning fixture needs to be replaced synchronously, resulting in a long cycle time for the model change and debugging, affecting the production efficiency and posing a high labor intensity and production safety hazards.

[0032] In this embodiment, the utility model provides a new energy battery connector positioning welding fixture, such as Figure 2 and Figure 3 As shown, it includes a connecting piece positioning fixture 5 and a bottom plate 7 arranged on both sides of the connecting piece positioning fixture 5, the bottom plate 7 is used to install the battery cell, the first battery cell 31 and the second battery cell 32 are respectively arranged on the bottom plate 7 on both sides of the connecting piece positioning fixture 5, and a plurality of mutually symmetrical grooves are opened at both ends of the connecting piece positioning fixture 5, each groove forms a step, and the plurality of steps located at the same end of the connecting piece positioning fixture 5 form a continuous step structure, and the outer contour of each step corresponds to a type of connecting piece 2;

[0033] It should be noted that, taking the actual production situation of this enterprise as an example, in the assembly process of dual-cell batteries, there are three different types of connecting pieces 2, such as Figure 3 As shown, the first connecting piece 21, the second connecting piece 22 and the third connecting piece 23 are different in size and outer contour. The conventional method of replacing the positioning fixture will result in a long changeover and debugging cycle time. In this embodiment, a plurality of mutually symmetrical grooves are provided at both ends of the connecting piece positioning fixture 5, each groove forms a step, and the plurality of steps at the same end of the connecting piece positioning fixture 5 form a continuous step structure, and at the same time, the outer contour of each step corresponds to a type of connecting piece 2, that is, Figure 2 and Figure 5As shown, three mutually symmetrical grooves are respectively provided at both ends of the connection piece positioning fixture 5, and the steps formed by the three grooves form a stepped structure, that is, whether it is a relatively small-sized connection piece 2 or a relatively large-sized connection piece 2, it can be directly arranged on the corresponding steps, that is, it is convenient to weld connection pieces 2 of different models. Of course, within the same processing cycle, if there are more types of connection pieces 2, corresponding grooves are sequentially arranged at both ends of the connection piece 2 positioning fixture according to the type and outer contour of the connection piece 2, so as to form a step for placing the connection piece 2;

[0034] In one embodiment, Figure 2 As shown, a side guard bar 6 is also provided on one side of the bottom plate 7, that is, the battery cell 3 is limited, so that the battery cell 3 can be quickly positioned when the battery cell 3 is set on the bottom plate 7, thereby improving production efficiency;

[0035] Specifically, the sidewall strip 6 includes a blocking portion for contacting the side wall of the battery cell 3 and a limiting portion vertically connected to the blocking portion, the blocking portion is arranged at the edge of the bottom plate 7, and the limiting portion is located on the outside of the bottom plate 7 and is used to contact the top corner of the battery cell 3, that is, the blocking portion and the limiting portion of the sidewall strip 6 can limit the side wall and the top corner of the battery cell 3, so that the operator can quickly complete the precise positioning and arrangement of the battery cell 3 by gradually moving the battery cell 3 from the outside to the inside close to the sidewall strip 6 until it contacts it, thereby improving production efficiency;

[0036] In one embodiment, a support assembly extending in the vertical direction is further provided on one side of the bottom plate 7 away from each other, that is, the support assembly is provided to leave a gap below the bottom plate 7, so as to facilitate welding of the battery cell 3 and the connecting piece 2, and also facilitate transfer of the connecting piece positioning fixture 5. Figure 4 As shown, the upper welding head 10 presses the current collector and the connecting sheet 2 of the battery cell onto the upper surface of the lower welding head 11, and then the ultrasonic generator emits ultrasonic waves to achieve the purpose of welding;

[0037] Specifically, Figure 2 and Figure 3 As shown, the support assembly includes a first side plate 8 and a second side plate 9, both of which extend in the vertical direction, the first side plate 8 is connected to the bottom of the bottom plate 7, the second side plate 9 is connected to the side wall of the first side plate 8, and the second side plate 9 can move up and down along the side wall of the first side plate 8, that is, the first side plate 8 is connected to the bottom of the bottom plate 7, and the second side plate 9 can move along the first side plate 8, so that the height of the support assembly can be adjusted, which is convenient for adjusting the height of the support assembly according to the actual processing environment and the position of the welding device, and is convenient for welding the battery cell and the connecting piece 2;

[0038] Furthermore, if Figure 3As shown, a strip hole is provided on the second side plate 9, and a corresponding connecting hole is provided on the first side plate 8. The second side plate 9 is connected to the first side plate 8 by connecting bolts penetrated in the strip hole, that is, the connecting bolts are used to penetrate the connecting holes and the strip hole. When the height of the support assembly needs to be adjusted, the second side plate 9 is moved up and down, and the connecting bolts move in the strip hole. After the second side plate 9 is moved to the target position, the connecting bolts are tightened to fix the position of the second side plate 9.

[0039] like Figure 3 As shown, a transfer hole 12 is further provided on the second side plate 9. The transfer hole 12 is located below the strip hole. The straight edge of the transfer hole 12 extends in a direction parallel to the bottom edge of the second side plate 9. The transfer hole 12 is provided to facilitate the operator to grasp the entire clamp by hand, that is, to improve the convenience during operation.

[0040] In one embodiment, Figure 5 As shown, a plurality of grooves are distributed at both ends of the connecting piece positioning fixture 5 along the positioning center of the connecting piece positioning fixture 5, that is, the grooves at both ends of the connecting piece positioning fixture 5 are symmetrically arranged along its positioning center, so that the same type of connecting piece 2 is conveniently arranged on the connecting piece positioning fixture 5 and welded with the current collectors of the battery cells on both sides;

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A new energy battery connector positioning welding fixture, characterized in that: It includes a connecting piece positioning fixture and a base plate arranged on both sides of the connecting piece positioning fixture, the base plate is used to install the battery cell, and multiple symmetrical grooves are opened at both ends of the connecting piece positioning fixture, each of the grooves forms a step, and the multiple steps located at the same end of the connecting piece positioning fixture form a continuous step structure, and the outer contour of each step corresponds to a model of connecting piece.

2. A new energy battery connector positioning welding fixture according to claim 1, characterized in that: A sidewall strip is also provided on one side of the bottom plate.

3. A new energy battery connector positioning welding fixture according to claim 1, characterized in that: A support assembly extending in a vertical direction is also provided on one side of the bottom plate that is away from each other.

4. A new energy battery connector positioning welding fixture according to claim 3, characterized in that: The supporting assembly includes a first side plate and a second side plate, both of which extend in a vertical direction, the first side plate is connected to the bottom of the base plate, the second side plate is connected to the side wall of the first side plate, and the second side plate can move up and down along the side wall of the first side plate.

5. A new energy battery connector positioning welding fixture according to claim 2, characterized in that: The edge strip includes a blocking portion for contacting the side wall of the battery cell and a limiting portion vertically connected to the blocking portion, the blocking portion is arranged at the edge of the bottom plate, and the limiting portion is located outside the bottom plate and is used to contact the top corner of the battery cell.

6. A new energy battery connector positioning welding fixture according to claim 4, characterized in that: The second side plate is provided with a strip hole, the first side plate is provided with a corresponding connecting hole, and the second side plate is connected to the first side plate via connecting bolts passing through the strip hole.

7. A new energy battery connector positioning welding fixture according to claim 6, characterized in that: The second side plate is also provided with a transfer hole, and the transfer hole is located below the strip hole.

8. A new energy battery connector positioning welding fixture according to claim 7, characterized in that: The transfer hole extends in a direction parallel to a bottom edge of the second side plate.

9. A new energy battery connector positioning welding fixture according to claim 1, characterized in that: The plurality of grooves are distributed at both ends of the connecting piece positioning fixture along the positioning center of the connecting piece positioning fixture.

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