A tool for automatic spot welding of special-shaped lithium ion battery pack

Abstract

The utility model provides a kind of tooling for automatically spot-welding special-shaped lithium ion battery pack, including upper cover and lower cover, upper cover and lower cover are correspondingly set for the positioning support groove of the both ends support of battery pack, the groove bottom of each support groove is equipped with the nickel sheet groove for placing special-shaped nickel sheet;The groove bottom of support groove is equipped with spot-welding needle hole;Magnet groove is set between adjacent spot-welding needle hole, first magnet for adsorbing special-shaped nickel sheet is installed in magnet groove;Positioning column is vertically installed on lower cover, upper cover is equipped with mounting hole for the end part of positioning column insertion when buckling;The both sides of lower cover are equipped with support plate respectively, and the buckling surface of support plate and upper cover is equipped with magnetic attraction component, to realize the buckling of upper cover and lower cover.The utility model is applicable to the welding of special-shaped lithium ion battery pack, can satisfy the welding demand of battery pack of different shape and size, can flexibly adapt to the structure of various special-shaped battery pack.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery production technology, and in particular relates to a tooling for automatically spot welding irregularly shaped lithium-ion battery packs. Background Technology

[0002] With the continuous development of lithium-ion battery technology, its application in consumer electronics, electric vehicles, energy storage systems, and other fields is becoming increasingly widespread. To meet the needs of different application scenarios, the design of lithium-ion battery packs is becoming increasingly diversified. In particular, the emergence of irregularly shaped lithium-ion battery packs has placed higher demands on the assembly and welding processes. Traditional tooling is difficult to precisely fix irregularly shaped nickel sheets, leading to displacement and deviation during welding, affecting welding quality. Furthermore, it requires multiple adjustments to positioning during operation and lacks convenient handling design, increasing labor intensity and time costs. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model aims to propose a tooling for automatically spot welding irregularly shaped lithium-ion battery packs, which solves the problem of the difficulty in accurately fixing irregularly shaped nickel sheets.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A tooling for automatically spot welding irregularly shaped lithium-ion battery packs includes an upper cover and a lower cover, wherein the upper cover and the lower cover are fastened together to form a receiving cavity for accommodating the battery pack. The upper and lower covers are respectively provided with bracket slots for positioning the supports at both ends of the battery pack. The bottom of each bracket slot is provided with a nickel sheet slot for placing irregularly shaped nickel sheets. The bottom of the bracket slot is provided with a spot welding pin hole, so that the welding machine can weld the irregularly shaped nickel sheets through the spot welding pin hole. A magnet slot is provided between adjacent spot welding pin holes, and a first magnet for adsorbing irregularly shaped nickel sheets is installed in the magnet slot. The lower cover is vertically mounted with a positioning post, and the upper cover is provided with mounting holes for inserting the end of the positioning post when fastened. Support plates are provided on both sides of the lower cover, and magnetic components are provided on the fastening surfaces of the support plates and the upper cover to achieve fastening between the upper and lower covers.

[0005] Furthermore, both the support plate and the upper cover have magnetic suction holes on their fastening surfaces. A second magnet is installed in the magnetic suction hole of the support plate. When the second magnet is fastened, it is inserted into the magnetic suction hole of the upper cover and attracts the magnetic suction hole of the upper cover.

[0006] Furthermore, the support plate and the lower cover are connected by a magnetic attraction component.

[0007] Furthermore, the connecting surfaces of the support plate and the lower cover are provided with magnetic suction holes, and a third magnet is installed in the magnetic suction hole of the lower cover, and the third magnet is attracted to the magnetic suction hole of the support plate.

[0008] Furthermore, the magnetic groove and the first magnet, the magnetic suction hole of the support plate and the second magnet, and the magnetic suction hole of the lower cover and the third magnet are all fixed with glue.

[0009] Furthermore, the end of the first magnet is flush with the bottom of the nickel strip groove.

[0010] Furthermore, the side wall of the bracket groove is provided with a limiting groove for fixing the head of the irregularly shaped nickel sheet.

[0011] Furthermore, the upper cover and the lower cover are each provided with four support slots.

[0012] Furthermore, each of the bracket slots is provided with six sets of nickel plate slots.

[0013] Furthermore, a handle is installed on the support plate on one side of the lower cover.

[0014] Compared with existing technologies, the tooling for automatically spot welding irregularly shaped lithium-ion battery packs described in this utility model has the following advantages: This invention is applicable to the welding of irregularly shaped lithium-ion battery packs, and can meet the welding requirements of battery packs of different shapes and sizes. The upper and lower covers, when fitted together, form a cavity for accommodating the battery pack; the bracket slots and nickel plate slots allow for precise positioning of the battery pack brackets and irregularly shaped nickel plates, ensuring accurate welding positions; by adjusting the shape and position of the nickel plate slots, it can flexibly adapt to the structure of various irregularly shaped battery packs, exhibiting strong versatility and adaptability.

[0015] The upper and lower covers of this invention are fastened together using positioning posts and magnetic components, making operation simple and convenient. During welding, simply place the battery pack and related components inside the fixture, then fasten the upper and lower covers together to perform the welding operation, greatly improving work efficiency. The positioning posts and magnetic components ensure the stability of the upper and lower covers after fastening. During welding, the fixture maintains good structural stability and will not deform or loosen due to external forces, thus ensuring the smooth progress of the welding process. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 An exploded view diagram provided for an embodiment of this utility model; Figure 3 This is a schematic diagram of the lower cover structure provided in an embodiment of the present utility model; Figure 4 A top view of the lower cover provided for an embodiment of this utility model; Figure 5 This is a schematic diagram of the nickel plate groove structure provided in an embodiment of the present utility model; Figure 6 A side view of the lower cover provided for an embodiment of this utility model; Figure 7 for Figure 6 Cross-sectional view along the AA direction.

[0017] Explanation of reference numerals in the attached figures: 1. Top cover; 2. Bottom cover; 3. Support groove; 31. Limiting groove; 4. Nickel sheet groove; 5. Spot welding pin hole; 6. First magnet; 7. Positioning post; 8. Support plate; 81. Second magnet; 82. Third magnet; 83. Handle. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 7 As shown, a tooling for automatically spot welding irregularly shaped lithium-ion battery packs includes an upper cover 1 and a lower cover 2. The upper cover 1 and the lower cover 2 are fastened together to form a receiving cavity for accommodating the battery pack. The upper cover 1 and the lower cover 2 are respectively provided with bracket grooves 3 for positioning the brackets at both ends of the battery pack. The bottom of each bracket groove 3 is provided with a nickel sheet groove 4 for placing irregularly shaped nickel sheets. The bottom of the bracket groove 3 is provided with a spot welding pin hole 5, so that the welding machine can weld the irregularly shaped nickel sheets through the spot welding pin hole 5. A magnet groove is provided between adjacent spot welding pin holes 5, and a first magnet 6 for adsorbing irregularly shaped nickel sheets is installed in the magnet groove. The lower cover 2 is vertically mounted with a positioning post 7, and the upper cover 1 is provided with a mounting hole for inserting the end of the positioning post 7 when fastened. The lower cover 2 is provided with a support plate 8 on both sides, and the fastening surfaces of the support plate 8 and the upper cover 1 are provided with magnetic components to achieve the fastening of the upper cover and the lower cover.

[0023] This utility model's tooling is suitable for welding irregularly shaped lithium-ion battery packs, and can meet the welding requirements of battery packs of different shapes and sizes. By adjusting the shape and position of the nickel strip groove 4, it can flexibly adapt to the structure of various irregularly shaped battery packs, and has strong versatility and adaptability. Each of the spot welding pin holes 5 corresponds to a battery cell of a battery pack, and the two opposite spot welding pin holes 5 on the upper cover 1 and the lower cover 2 correspond to the two ends of the battery cell, respectively.

[0024] In a preferred embodiment of this utility model, both the fastening surfaces of the support plate 8 and the upper cover 1 are provided with magnetic suction holes. A second magnet 81 is installed in the magnetic suction hole of the support plate 8. When the second magnet 81 is fastened, it is inserted into the magnetic suction hole of the upper cover 1 and attracts the magnetic suction hole of the upper cover 1.

[0025] Specifically, a second magnet is installed in the magnetic suction hole of the support plate 8. When the upper cover 1 and the lower cover 2 are fastened together, the second magnet 81 on the support plate 8 will be inserted into the magnetic suction hole of the upper cover 1 and attracted to the magnetic component inside the magnetic suction hole of the upper cover 1. This magnetic attraction ensures that the upper cover 1 and the lower cover 2 are tightly and firmly joined together, forming a stable tooling structure.

[0026] The magnetic adsorption design makes the snap-fit ​​operation of the upper cover 1 and lower cover 2 much simpler and faster. Operators only need to align the upper cover 1 with the lower cover 2 and press gently to achieve a tight snap-fit, without the need for additional fixing devices or complicated operating procedures, greatly improving work efficiency. Similarly, due to the magnetic adsorption, the disassembly of the upper cover 1 and lower cover 2 is also very convenient. Operators only need to gently pull open the upper and lower covers to complete the disassembly operation.

[0027] In a preferred embodiment of this utility model, the support plate 8 and the lower cover 2 are connected by a magnetic attraction component. Both the connecting surfaces of the support plate 8 and the lower cover 2 are provided with magnetic attraction holes. A third magnet 82 is installed inside the magnetic attraction hole of the lower cover 2, and the third magnet 82 is attracted to the magnetic attraction hole of the support plate 8.

[0028] Specifically, magnetic suction holes are provided on the connecting surfaces of the support plate 8 and the lower cover 2. A third magnet 82 is installed in the magnetic suction hole of the lower cover 2. When the support plate 8 and the lower cover 2 are assembled, the third magnet 82 will be inserted into the magnetic suction hole of the support plate 8 and will attract each other with the magnetic components in the magnetic suction hole of the support plate 8, thereby achieving a firm connection between the support plate 8 and the lower cover 2.

[0029] The support plate 8 and the lower cover 2 can also be connected by screws. Threaded holes are provided on the connecting surfaces of the support plate 8 and the lower cover 2, and the support plate 8 is fixed to the lower cover 2 by screws.

[0030] Buckles and slots are respectively provided on the connecting surfaces of the support plate 8 and the lower cover 2, and the connection is achieved by the cooperation of the buckles and slots.

[0031] In a preferred embodiment of this invention, the magnet slot is fixed to the first magnet 6 with glue. The magnetic suction hole of the support plate 8 is fixed to the second magnet with glue. The magnetic suction hole of the lower cover 2 is fixed to the third magnet with glue.

[0032] Specifically, the magnetic slot and the first magnet 6, the magnetic suction hole of the support plate 8 and the second magnet 81, and the magnetic suction hole of the lower cover 2 and the third magnet 82 are all fixed with glue. This fixing method ensures that the magnets are firmly in their respective positions and will not loosen or fall off during use, thereby realizing the magnetic connection function of the tooling.

[0033] In a preferred embodiment of this utility model, the end of the first magnet 6 is flush with the bottom of the nickel plate groove 4.

[0034] Specifically, the first magnet 6 is installed at the bottom of the magnet groove and fixed with glue. The end of the first magnet 6 is flush with the bottom of the nickel sheet groove 4, ensuring that the nickel sheet can be placed flat in the groove without unevenness caused by the protrusion of the magnet, thereby improving the welding accuracy. The attraction of the magnet can firmly fix the nickel sheet, preventing it from shifting during the welding process, reducing welding deviation, and improving welding quality.

[0035] In a preferred embodiment of the present invention, the side wall of the support groove 3 is provided with a limiting groove 31 for fixing the head of the irregular nickel sheet.

[0036] Specifically, when the irregularly shaped nickel sheet is placed in the nickel sheet groove 4, the head of the nickel sheet will be inserted into the limiting groove 31. The side wall of the limiting groove 31 physically limits the head of the nickel sheet to prevent the nickel sheet from shifting during the welding process.

[0037] In a preferred embodiment of this utility model, the upper cover 1 and the lower cover 2 are respectively provided with four support grooves 3.

[0038] Specifically, the upper cover 1 and the lower cover 2 are each provided with four support slots 3, which can simultaneously hold four battery packs, enabling batch welding and significantly improving production efficiency. In this embodiment, the support slots 3 are rectangular in shape.

[0039] In a preferred embodiment of this utility model, each of the bracket slots 3 is provided with six sets of nickel plate slots 4.

[0040] Specifically, the six sets of nickel plate slots 4 have different shapes to accommodate nickel plates of various shapes and meet complex welding requirements. During the welding process, operators can select the appropriate nickel plate slot 4 to place the nickel plates according to actual needs, increasing the flexibility of the welding operation and better addressing the welding requirements of battery packs of different shapes and sizes.

[0041] In a preferred embodiment of this utility model, a handle 83 is installed on the support plate 8 on one side of the lower cover 2.

[0042] Specifically, operators can quickly place the tooling into the designated position on the welding equipment using handle 83, reducing positioning time and improving welding efficiency.

[0043] The working principle of a tooling for automatically spot welding irregularly shaped lithium-ion battery packs: During use, the irregularly shaped nickel sheet is first placed in the nickel sheet groove 4, and the first magnet 6 installed in the magnet groove is used to attract the irregularly shaped nickel sheet, ensuring that the nickel sheet remains stable during the welding process and does not shift. Then, the bracket of the irregularly shaped lithium-ion battery pack is placed in the bracket groove 3 of the lower cover 2.

[0044] When the upper cover 1 and the lower cover 2 are fastened together, the positioning pin 7 on the lower cover 2 inserts into the mounting hole of the upper cover 1, serving a positioning function to ensure accurate alignment of the upper and lower covers. Simultaneously, the magnetic attraction components on the fastening surface of the support plate 8 and the upper cover 1 interact to achieve a tight fastening between the upper and lower covers. During the welding process, the welding needle of the welding machine welds the irregularly shaped nickel sheet through the spot welding pin hole 5, completing the spot welding of the battery pack.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for automatically spot welding irregularly shaped lithium-ion battery packs, comprising an upper cover and a lower cover, wherein the upper cover and the lower cover, when fastened together, form a receiving cavity for accommodating the battery pack, characterized in that: The upper and lower covers are respectively provided with bracket slots for positioning the supports at both ends of the battery pack. The bottom of each bracket slot is provided with a nickel sheet slot for placing irregularly shaped nickel sheets. The bottom of the bracket slot is provided with a spot welding pin hole, so that the welding machine can weld the irregularly shaped nickel sheets through the spot welding pin hole. A magnet slot is provided between adjacent spot welding pin holes, and a first magnet for adsorbing irregularly shaped nickel sheets is installed in the magnet slot. The lower cover is vertically mounted with a positioning post, and the upper cover is provided with mounting holes for inserting the end of the positioning post when fastened. Support plates are provided on both sides of the lower cover, and magnetic components are provided on the fastening surfaces of the support plates and the upper cover to achieve fastening between the upper and lower covers.

2. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: Both the support plate and the upper cover have magnetic holes on their fastening surfaces. A second magnet is installed in the magnetic hole of the support plate. When the second magnet is fastened, it is inserted into the magnetic hole of the upper cover and attracts the magnetic hole of the upper cover.

3. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: The support plate and the lower cover are connected by a magnetic attraction component.

4. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 3, characterized in that: The connecting surfaces of the support plate and the lower cover are provided with magnetic suction holes. A third magnet is installed in the magnetic suction hole of the lower cover, and the third magnet is attracted to the magnetic suction hole of the support plate.

5. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 4, characterized in that: The magnetic groove and the first magnet, the magnetic suction hole of the support plate and the second magnet, and the magnetic suction hole of the lower cover and the third magnet are all fixed with glue.

6. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: The end of the first magnet is flush with the bottom of the nickel plate groove.

7. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: The side wall of the support groove is provided with a limiting groove for fixing the head of the irregularly shaped nickel sheet.

8. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: The upper and lower covers are each provided with four support slots.

9. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: Each of the aforementioned support slots contains six sets of nickel plate slots.

10. The tooling for automatically spot welding irregularly shaped lithium-ion battery packs according to claim 1, characterized in that: A handle is installed on the support plate on one side of the lower cover.

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