A CCS hot riveting process

Abstract

A CCS hot riveting process, belonging to the field of integrated busbar manufacturing technology, includes steps such as drawing input, placement of parts to be processed, alignment of the drawing and parts to be processed, formal processing, and processing completion. In the field of hot riveting technology, multiple hot riveting parts that can work uniformly are set up for one or two standardized products to improve work efficiency and eliminate the problem of real-time drawing acquisition.

Description

Technical Field

[0001] This application belongs to the field of integrated busbar manufacturing technology, and specifically relates to a CCS hot riveting process. Background Technology

[0002] With the development of battery pack integration technology and the increasing requirements for automated assembly, integrated busbars that use FPC flexible circuit boards to replace traditional battery wiring harnesses are gradually being widely used. An integrated busbar (Cells Contact System, CCS) mainly consists of signal acquisition components, plastic structural parts, copper and aluminum busbars, etc., connected into a whole through processes such as hot pressing or riveting, realizing high-voltage series and parallel connection of battery cells, as well as battery temperature sampling and cell voltage sampling functions.

[0003] In the traditional integrated busbar production process, in order to improve the welding efficiency between the flexible circuit board and the aluminum busbar, two or more welding heads can be used to work simultaneously, so that multiple welding heads can be used to weld the solder joints on the integrated busbar at the same time.

[0004] The method and storage medium for controlling double-head welding of integrated busbars, disclosed in CN118321772A, includes the following steps: acquiring an original image of the integrated busbar to be welded; acquiring a planar coordinate system with an origin, dividing the area on one side of the origin of the planar coordinate system into a first region and the area on the other side of the origin into a second region along the direction of a first axis; acquiring the coordinates of each weld point in the original image of the integrated busbar to be welded; and simultaneously driving a first welder and a second welder to weld the weld points located in the first region using the first welder and the weld points located in the second region using the second welder, wherein the movement directions of the first welder and the second welder on the first axis are consistent.

[0005] In existing technologies, the original image of the integrated busbar needs to be read and stored in a storage medium before welding. If the shape of the integrated busbar is changed, the vision system needs to reread and store the image, and then the welding equipment needs to readjust the coordinate position of the welding head. This is very common in the field of welding technology because most products in existing welding technologies are non-standard products. Moreover, the prior art describes a double-head welding method for integrated busbars, while this application uses a hot riveting process; the end component structures used are different, and the structure of the welder is more complex than that of the hot riveting component, and the welder cannot use multiple welding heads to work simultaneously. Summary of the Invention

[0006] The purpose of this invention is to address the problem that existing equipment requires continuous reading and re-determination of coordinates of processed parts. This application first targets only one or two standardized products, eliminating the problem of real-time pattern acquisition; and in the field of hot riveting technology, multiple hot riveting parts that can work in a unified manner can be set up to improve work efficiency.

[0007] To achieve the above technical objectives, the following technical solution is provided: a CCS hot riveting process, comprising the following steps:

[0008] a. Drawing input: Input the original image of the busbar to be hot-riveted into the hot riveting equipment; the coordinates of the hot riveting points in the original image are divided into equally spaced hot riveting points and independent hot riveting points;

[0009] b. Place the parts to be processed: put the integrated busbar to be hot-riveted into the hot riveting equipment; then select the original image that matches the graphic of the integrated busbar in the hot riveting equipment and wait for processing;

[0010] c. Alignment of drawing and part to be processed: The hot riveting equipment is ready to start hot riveting the integrated busbar. The hot riveting equipment automatically adjusts the starting position of the hot riveting mechanism in the hot riveting equipment to adapt to the inserted integrated busbar.

[0011] d. Begin formal processing: The hot riveting mechanism processes the equally aligned hot riveting points and the independent hot riveting points; or it processes the equally aligned hot riveting points first and then processes the independent hot riveting points;

[0012] e. Processing complete: Take out the processed integrated busbar and place it in the storage box.

[0013] The pattern input in this application does not require real-time updates and storage via image acquisition equipment. Only one or two patterns need to be input into the hot riveting equipment via computer. During use, the relevant pattern parameters can be manually selected for hot riveting. Technicians classify the riveting posts based on whether they consist of neatly aligned rows or independent FPC & NTC riveting posts. The rows of riveting posts are hot-riveted using aligned riveting heads, while the FPC & NTC riveting posts are hot-riveted using independent riveting heads.

[0014] In one possible implementation, in step a, the original image of the busbar to be hot-riveted has at least two dimensions, namely, the spacing between the hot-riveting points within the aligned hot-riveting points in the original image has at least two dimensions. In this application, the spacing between the aligned hot-riveting points has two parameters, which are pre-stored in the hot-riveting equipment.

[0015] In one possible implementation, in step c, some of the rivet heads in the hot riveting mechanism are adjusted to the starting position of the equally aligned hot riveting points as equally aligned rivet heads;

[0016] Adjust some of the riveting heads in the hot riveting mechanism to the starting position of the independent hot riveting point to serve as independent hot riveting heads. The starting position is based on the reference setting provided with the hot riveting equipment.

[0017] In one possible implementation, in step c, all the equally aligned rivet heads are aligned with the equally aligned hot riveting points.

[0018] In one implementation, in step c, the equally aligned riveting heads are aligned with the equally aligned hot riveting points; in step d, the positions of the equally aligned riveting heads are adjusted according to the drawing in step a during operation.

[0019] In one possible implementation, the equally spaced hot riveting points are aluminum bar rivets, arranged in 2, 4, or 8 rows.

[0020] In one possible implementation, the independent hot riveting point is an FPC & NTC rivet post.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] In the technical solution of this application, the application scenario is the integrated busbar hot riveting process. The integrated busbar is a standardized product, and the solution in this application only has two models. The data of both models can be directly input into the hot riveting equipment using relevant software, eliminating the need to install a vision imaging system on the hot riveting equipment to read the shape data of non-standard products in real time, thus saving costs. The points requiring hot riveting are arranged in a series. Linear riveting points are arranged as column-shaped rivets for unified hot riveting, while rivet points outside the linear pattern are arranged as scattered rivets for single-point hot riveting. This arrangement improves the hot riveting efficiency of the integrated busbar, enhances the flexibility of hot riveting, and reduces energy consumption. Detailed Implementation

[0023] In existing embodiments, the traditional methods for fixing and riveting the CCS busbar aluminum busbar and the multi-purpose vacuum-formed or injection-molded separator plate fixed by FPCA in new energy batteries are mainly single-point hot riveting and whole-plate hot riveting. Single-point hot riveting involves heating and riveting with a single rivet head. While this process offers some flexibility, it only allows for single-point operation, has a long contact distance (CT), and low production efficiency. Whole-plate hot riveting involves heating and riveting with multiple rivets at once. Although this process can rivet all rivets at once, it requires specialized tooling, and different tooling needs to be changed for different products, resulting in high equipment costs.

[0024] The embodiments provided in this application are as follows:

[0025] Example 1: A CCS hot riveting process, comprising the following steps:

[0026] a. Drawing input: Input the original image of the busbar to be hot-riveted into the hot riveting equipment; the coordinates of the hot riveting points in the original image are divided into equally spaced hot riveting points and independent hot riveting points;

[0027] b. Place the parts to be processed: put the integrated busbar to be hot-riveted into the hot riveting equipment; then select the original image that matches the graphic of the integrated busbar in the hot riveting equipment and wait for processing;

[0028] c. Alignment of drawing and part to be processed: The hot riveting equipment is ready to start hot riveting the integrated busbar. The hot riveting equipment automatically adjusts the starting position of the hot riveting mechanism in the hot riveting equipment to adapt to the inserted integrated busbar.

[0029] d. Begin formal processing: The hot riveting mechanism processes the equally aligned hot riveting points and the independent hot riveting points; or it processes the equally aligned hot riveting points first and then processes the independent hot riveting points;

[0030] e. Processing complete: Take out the processed integrated busbar and place it in the storage box.

[0031] In this embodiment, in step a, the spacing between the hot riveting points in the evenly aligned hot riveting points in the original image of the integrated busbar to be hot riveted is 5mm.

[0032] In this embodiment, in step c, some rivet heads in the hot riveting mechanism are adjusted to the starting position of the equally aligned hot riveting points to become equally aligned rivet heads; some rivet heads in the hot riveting mechanism are adjusted to the starting position of the independent hot riveting points to become independent hot riveting heads. The equally aligned rivet heads are all aligned with the equally aligned hot riveting points.

[0033] In this embodiment, based on the characteristics of CCS products, the equally spaced hot riveting points are aluminum bar rivets, arranged in 2, 4, or 8 rows. Independent hot riveting points are FPC & NTC rivets.

[0034] Example 2: A CCS hot riveting process, comprising the following steps:

[0035] a. Drawing input: Input the original image of the busbar to be hot-riveted into the hot riveting equipment; the coordinates of the hot riveting points in the original image are divided into equally spaced hot riveting points and independent hot riveting points;

[0036] b. Place the parts to be processed: put the integrated busbar to be hot-riveted into the hot riveting equipment; then select the original image that matches the graphic of the integrated busbar in the hot riveting equipment and wait for processing;

[0037] c. Alignment of drawing and part to be processed: The hot riveting equipment is ready to start hot riveting the integrated busbar. The hot riveting equipment automatically adjusts the starting position of the hot riveting mechanism in the hot riveting equipment to adapt to the inserted integrated busbar.

[0038] d. Begin formal processing: The hot riveting mechanism processes the equally aligned hot riveting points and the independent hot riveting points; or it processes the equally aligned hot riveting points first and then processes the independent hot riveting points;

[0039] e. Processing complete: Take out the processed integrated busbar and place it in the storage box.

[0040] In this embodiment, in step a, the spacing between the hot riveting points in the evenly aligned hot riveting points in the original image of the integrated busbar to be hot riveted is 8mm.

[0041] In this embodiment, in step c, some rivet heads in the hot riveting mechanism are adjusted to the starting position of the equally aligned hot riveting points to become equally aligned rivet heads; some rivet heads in the hot riveting mechanism are adjusted to the starting position of independent hot riveting points to become independent hot riveting heads. The equally aligned rivet heads are partially aligned with the equally aligned hot riveting points. Furthermore, in step d, the equally aligned rivet heads are adjusted in position according to the drawing in step a during operation.

[0042] In this embodiment, based on the characteristics of CCS products, the equally spaced hot riveting points are aluminum bar rivets, arranged in 2, 4, or 8 rows. Independent hot riveting points are FPC & NTC rivets.

[0043] The two embodiments described above rely on the rapid hot riveting function of the infrared heating riveting head. By programming to change the lateral spacing, they can meet the diverse production needs of different spacings. The parallel hot riveting of multiple riveting heads combined with the rapid riveting of infrared hot riveting optimizes the working time and improves the efficiency of riveting production.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0045] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate the orientation or positional relationship, are only for the convenience of describing the technical solution of this patent 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 on this patent application.

[0046] Furthermore, the terms "first" and "second" 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0048] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A CCS hot riveting process, characterized in that, Including steps such as: a. Drawing input: Input the original image of the busbar to be hot-riveted into the hot riveting equipment; the coordinates of the hot riveting points in the original image are divided into equally spaced hot riveting points and independent hot riveting points; Pattern input does not require real-time updates and storage via image acquisition equipment. Simply input one or two patterns into the hot riveting equipment via computer. When in use, the relevant pattern parameters can be manually selected for hot riveting. Furthermore, technicians classify the riveting posts based on whether there are some neatly arranged rows of riveting posts or some independent FPC & NTC riveting posts. The neatly arranged rows of riveting posts are hot riveted with neatly arranged riveting heads. The neatly arranged hot riveting points are aluminum bar riveting posts, arranged in 2, 4, or 8 rows. The FPC & NTC riveting posts are hot riveted with independent riveting heads. b. Place the parts to be processed: put the integrated busbar to be hot-riveted into the hot riveting equipment; then select the original image that matches the graphic of the integrated busbar in the hot riveting equipment and wait for processing; c. Alignment of drawing and part to be processed: The hot riveting equipment is ready to start hot riveting the integrated busbar. The hot riveting equipment automatically adjusts the starting position of the hot riveting mechanism in the hot riveting equipment to adapt to the inserted integrated busbar. d. Begin formal processing: The hot riveting mechanism processes the equally aligned hot riveting points and the independent hot riveting points; or it processes the equally aligned hot riveting points first and then processes the independent hot riveting points; e. Processing complete: Take out the processed integrated busbar and place it in the storage box.

2. The CCS hot riveting process according to claim 1, characterized in that, In step a, the original image of the busbar to be hot-riveted has at least two forms, namely, the spacing between the hot riveting points within the uniform hot riveting points in the original image has at least two dimensions.

3. The CCS hot riveting process according to claim 2, characterized in that, In step c, some of the rivet heads in the hot riveting mechanism are adjusted to the starting position of the equally aligned hot riveting points as equally aligned rivet heads; Some of the rivet heads in the hot riveting mechanism are adjusted to the starting position of the independent hot riveting point to become independent hot riveting heads.

4. The CCS hot riveting process according to claim 3, characterized in that, In step c, all the equally aligned rivet heads and equally aligned hot riveting points are aligned.

5. The CCS hot riveting process according to claim 3, characterized in that, In step c, the rivet heads are aligned with the hot riveting points; in step d, the positions of the rivet heads are adjusted according to the drawing in step a.