Detection tool for detecting position of tandem busbar of battery pack

Abstract

The utility model relates to a testing fixture for copper bar flexible connection, and discloses a testing fixture for detecting the position of a series busbar of a battery pack, which comprises a detection plate, the upper end face of the detection plate is provided with a strip-shaped first positioning boss used for positioning a copper bar flexible connection piece, and the two sides of the first positioning boss are provided with positioning units used for positioning electrode slices. The positioning unit comprises two second positioning bosses, the second positioning bosses are integrally formed on the detection plate, the upper end faces of the second positioning bosses are flush with the upper end faces of the first positioning bosses, and the center of the upper end face of each second positioning boss is provided with a first positioning column protruding upwards. The long-strip-shaped first positioning boss can accurately position the copper bar flexible connecting piece, and the positioning units on the two sides of the long-strip-shaped first positioning boss can effectively position the electrode plate. The two second positioning bosses are flush with the upper end face of the first positioning boss, positioning operation on the same plane is guaranteed, positioning errors caused by height difference are reduced, it is guaranteed that the relative positions of the copper bar flexible connecting piece and the electrode plate are accurate, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to a tool for inspecting flexible copper busbar connections, and more particularly to a tool for detecting the position of the series busbar of a battery pack. Background Technology

[0002] In the battery pack assembly process, the connection and positioning of busbars are critical steps. Existing busbar positioning fixtures typically employ a copper sleeve clamping plate structure, achieving positioning and locking through the cooperation between the copper sleeve and the busbar. However, the size and position of the copper sleeve clamping plate in existing technologies are not adjustable, limiting its use in different battery pack models and resulting in poor fixture compatibility. Furthermore, existing fixtures struggle to accommodate minute deviations in busbar position during positioning, easily leading to inaccurate positioning or poor soldering, thus affecting the overall performance and reliability of the battery pack.

[0003] For example, prior art with patent number CN202022074150.0 proposes a positioning component and positioning fixture, which achieves dimensional adjustment between the copper bushings through a "cross-shaped waist hole design" to adapt to the positioning requirements of different battery module models. However, this technology still has the following shortcomings: the positioning structure is complex, requiring the cooperation of multiple elongated holes and positioning holes for adjustment, increasing manufacturing costs and operational difficulty. It lacks adaptability to minor deviations in busbar position, failing to effectively guarantee the precise alignment of the busbar and electrode plates. During inspection, the contact state between the busbar and electrode plates cannot be visually judged, easily leading to problems such as incomplete or broken solder joints. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a tool for detecting the position of the series busbar of a battery pack.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] A fixture for detecting the position of a battery pack series busbar includes a rectangular detection plate. The upper surface of the detection plate is provided with an upwardly protruding elongated first positioning boss for positioning copper busbar flexible connectors. On both sides of the first positioning boss are provided a number of positioning units for positioning electrode plates. Each positioning unit includes two second positioning bosses. The second positioning bosses are integrally formed on the detection plate. The upper surface of the second positioning bosses is flush with the upper surface of the first positioning bosses. The center of the upper surface of each second positioning boss is provided with an upwardly protruding first positioning post.

[0007] Preferably, both sides of the first positioning boss are provided with inwardly recessed positioning grooves, the number of positioning grooves is equal to the number of positioning units, and the opening of the positioning groove faces one of the second positioning bosses in the positioning unit.

[0008] Preferably, the first positioning boss is provided with a number of first through holes, and the central axes of all the first through holes are on the same plane.

[0009] Preferably, there are two first positioning bosses, and between the two first positioning bosses are several second positioning posts for positioning the blister base plate. The second positioning posts are integrally formed on the detection plate, and all the second positioning posts are arranged in a row.

[0010] Preferably, the detection plate also has at least two third positioning posts integrally formed, all of which are arranged in a row, and the row of third positioning posts is perpendicular to the row of second positioning posts.

[0011] Preferably, the detection plate between the two first positioning bosses is provided with a number of second through holes, and the central axis of all the second through holes is on the same plane as the central axis of the second positioning post.

[0012] Preferably, the bottom of the detection plate is provided with at least two grooves that are formed into elongated strips, and all the first through holes in the same column are connected to one of the grooves, and all the second through holes in the same column are connected to the other groove.

[0013] Preferably, the bottom of the detection plate is provided with a number of support feet for support, and both ends of the upper surface of the detection plate are provided with handles.

[0014] This utility model, by adopting the above technical solution, has significant technical effects:

[0015] (1) The elongated first positioning boss can accurately position the copper busbar flexible connector, and the positioning units on both sides can effectively position the electrode plates. The two second positioning bosses are flush with the upper surface of the first positioning boss, ensuring that the positioning operation is performed on the same plane, reducing the positioning error caused by the height difference, ensuring the relative position of the copper busbar flexible connector and the electrode plates is accurate, and improving the detection accuracy.

[0016] (2) The second positioning boss is integrally formed on the detection plate, which is structurally stable and avoids the detection results being affected by the loosening of the positioning components. The first positioning post at the center of the upper surface of each second positioning boss can further accurately position the electrode sheet, restrict the position of the electrode sheet from multiple dimensions, enhance the stability of positioning, and make the detection process more reliable.

[0017] (3) The design of multiple positioning units allows for simultaneous positioning and testing of multiple electrode sheets, greatly improving testing efficiency. This modular positioning unit layout can adapt to the testing needs of battery packs with different numbers of electrode sheets, enhancing the versatility of the inspection tool and reducing the cost for manufacturers to equip different battery packs with multiple inspection tools. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front of the detection plate in this utility model.

[0019] Figure 2 This is a schematic diagram of the structure on the back of the detection plate in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0021] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:

[0022] 1—Detection plate, 11—First positioning boss, 13—Second positioning boss, 14—Second positioning post, 15—Third positioning post, 16—Support foot, 17—Handle, 111—Positioning groove, 112—First through hole, 113—Second through hole, 114—Groove, 131—First positioning post

[0023] 2—Copper busbar flexible connector

[0024] 3—Electrode Plate

[0025] 4—Thermoforming base plate Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 The present invention will be further described in detail with reference to the embodiments.

[0027] Example 1

[0028] A tool for detecting the position of a battery pack series busbar includes a rectangular detection plate 1. The upper surface of the detection plate 1 is provided with an upwardly protruding elongated first positioning boss 11 for positioning a copper busbar flexible connector 2. Both sides of the first positioning boss 11 are provided with a number of positioning units for positioning electrode plates 3. In this embodiment, the number of positioning units is 15. Each positioning unit includes two second positioning bosses 13. The second positioning bosses 13 are integrally formed on the detection plate 1. The upper surface of the second positioning bosses 13 is flush with the upper surface of the first positioning bosses 11. At the center of the upper surface of each second positioning boss 13, there is an upwardly protruding first positioning post 131. The first positioning post 131 is cylindrical. The elongated first positioning boss 11 precisely positions the copper busbar flexible connector 2. Fifteen positioning units on each side, with two second positioning bosses 13 in each unit working in conjunction with the first positioning post 131, position the electrode piece 3 from multiple dimensions. This ensures the accurate relative position of the copper busbar flexible connector 2 and the electrode piece 3, significantly improving the accuracy of detecting the battery pack series busbar position and reducing detection errors. Multiple positioning units can simultaneously position and detect multiple electrode pieces 3, acquiring the relative position information of multiple electrode pieces 3 and the copper busbar flexible connector 2 in a single operation. Compared to detecting each electrode piece 3 individually, this greatly shortens the detection time, improves detection efficiency, and effectively meets the rapid detection needs of large-scale production, contributing to increased production efficiency and reduced time costs.

[0029] When the inspection tool is in operation, the copper busbar flexible connector 2 is first placed on the long strip-shaped first positioning boss 11 on the upper surface of the inspection plate 1. The first positioning boss 11, based on its shape and position design, plays a positioning role for the copper busbar flexible connector 2, restricts its displacement in the horizontal direction, and determines the position reference of the copper busbar flexible connector 2.

[0030] Next, the electrode sheet 3 is placed on the positioning units on both sides of the first positioning boss 11. Each positioning unit contains two second positioning bosses 13. These two second positioning bosses 13 initially limit the electrode sheet 3 from both sides. Since the second positioning bosses 13 are integrally formed on the detection plate 1, the structure is stable, ensuring the reliability of the limiting and initially determining the position of the electrode sheet 3 on the horizontal plane.

[0031] Then, the first positioning post 131 at the center of the upper surface of each second positioning boss 13 comes into play. If there is a corresponding hole on the electrode plate 3, the first positioning post 131 can be inserted into the hole; if there is no corresponding hole, it can also cooperate with a specific part of the electrode plate 3 to further precisely define the position of the electrode plate 3 in the vertical direction. Through this series of positioning operations, the precise positioning of the copper busbar flexible connector 2 and the electrode plate 3 is achieved. By observing the relative positional relationship between the two, the testing personnel can determine whether the position of the battery pack series busbar meets the standard.

[0032] The first positioning boss 11 has inwardly recessed positioning grooves 111 on both sides of its side walls. These grooves are used to position the blister base plate 4. The copper busbar flexible connector 2 and the electrode plate 3 are connected by a connecting piece positioned directly above the positioning groove 111. Part of the positioning groove 111 is a U-shaped groove, and the other part is an L-shaped groove. The number of positioning grooves 111 is equal to the number of positioning units. The openings of the positioning grooves 111 face one of the second positioning bosses 13 within the positioning unit. This arrangement, with the openings of the positioning grooves 111 facing one of the second positioning bosses 13 within the positioning unit and the number equal to the number of positioning units, ensures that the positioning of the blister base plate 4, connecting piece, copper busbar flexible connector 2, and electrode plate 3 is interconnected and coordinated. This design enhances the stability of the entire fixture positioning structure, preventing displacement of components during testing, ensuring the reliability of the test results, and reducing test errors.

[0033] The first positioning boss 11 is provided with a number of first through holes 112. The first through holes 112 are used to reduce the weight of the detection plate 1. There are 13 first through holes 112, and the central axis of all the first through holes 112 is on the same plane.

[0034] There are two first positioning bosses 11, and between the two first positioning bosses 11 are several second positioning posts 14 for positioning the vacuum-formed base plate 4. The second positioning posts 14 are integrally formed on the detection plate 1, and all the second positioning posts 14 are arranged in a row. The multiple second positioning posts 14 arranged between the two first positioning bosses 11 can accurately position the vacuum-formed base plate 4. The integral forming of the second positioning posts 14 on the detection plate 1 ensures the accuracy and stability of its position, avoids the vacuum-formed base plate 4 from shifting during the detection process, and ensures the accuracy of the detection results. The multiple second positioning posts 14 arranged in a row support and position the vacuum-formed base plate 4 from multiple points, increasing the contact points with the vacuum-formed base plate 4 and making its positioning more stable. This multi-support positioning method can effectively resist external interference, such as vibration and collision, reduce the shaking of the vacuum-formed base plate 4 during the detection process, and improve the reliability of the entire detection fixture.

[0035] The detection plate 1 also has at least two third positioning posts 15 integrally formed on it. In this embodiment, there are two third positioning posts 15. The third positioning posts 15 are also used to position the vacuum forming base plate 4. All the third positioning posts 15 are arranged in a row, and the row of third positioning posts 15 is perpendicular to the row of second positioning posts 14. The third positioning posts 15 and the second positioning posts 14 are arranged perpendicularly to form a stable cross-positioning structure. This structure allows the vacuum forming base plate 4 to be effectively supported and constrained in multiple directions, enhancing the positioning stability of the vacuum forming base plate 4. During the detection process, even if it is disturbed by external forces, the vacuum forming base plate 4 can remain in the accurate position, reducing the detection error caused by position changes and ensuring reliable detection results.

[0036] The bottom of the inspection plate 1 is provided with a number of support feet 16, and there are 8 support feet 16. Both ends of the upper surface of the inspection plate 1 are provided with handles 17. The handles 17 provided at both ends of the upper surface of the inspection plate 1 greatly facilitate the handling and movement of the inspection tool.

[0037] Example 2

[0038] Example 2 is basically the same as Example 1, except that the detection plate 1 between the two first positioning bosses 11 is provided with a number of second through holes 113. These second through holes 113 are used to reduce the weight of the detection plate 1. There are 10 second through holes 113, and the central axis of all the second through holes 113 is on the same plane as the central axis of the second positioning post 14. This layout design reduces weight while minimizing the weakening of the structural strength of the detection plate 1. Because the second positioning post 14 plays a crucial positioning role for the vacuum forming base plate 4, the reasonable arrangement of the second through holes 113 ensures that the detection plate 1 maintains a stable structure while supporting the vacuum forming base plate 4 and other detection components, guaranteeing positioning accuracy and detection reliability.

[0039] Example 3

[0040] Example 3 is basically the same as Example 1, except that the bottom of the detection plate 1 has at least two elongated grooves 114. In this example, there are three grooves 114. All the first through holes 112 in the same column are connected to one of the grooves 114, and all the second through holes 113 in the same column are connected to another groove 114. The design of the grooves 114 changes the structure of the detection plate 1 to a certain extent. The elongated grooves act as reinforcing ribs, enhancing the structural strength of the detection plate 1. In particular, the design of connecting with the through holes can effectively disperse the stress generated by the load-bearing components of the detection plate or by external forces, reducing the possibility of deformation of the detection plate 1, ensuring the stability of the detection plate 1 during the detection process, and thus ensuring the accuracy of the detection results.

Claims

1. A detection tool for detecting the position of a battery string busbar, comprising a detection plate (1) in the shape of a rectangle, characterized in that: The upper end face of the detection plate (1) is provided with a first positioning boss (11) in the shape of a long strip which protrudes upward and is used for positioning the copper bar flexible connecting piece (2), and the two sides of the first positioning boss (11) are provided with a plurality of positioning units which are used for positioning the electrode sheet (3), the positioning unit comprises two second positioning bosses (13) which are integrally formed on the detection plate (1), the upper end face of the second positioning boss (13) is flush with the upper end face of the first positioning boss (11), and the center of the upper end face of each second positioning boss (13) is provided with a first positioning column (131) which protrudes upward.

2. The detection tool for detecting the position of the battery string connecting busbar according to claim 1, wherein: The two side walls of the first positioning boss (11) are provided with a positioning groove (111) which is recessed inward, the number of the positioning groove (111) is equal to the number of the positioning unit, and the opening of the positioning groove (111) faces one of the second positioning bosses (13) in the positioning unit.

3. The gauge of claim 1, wherein: The first positioning boss (11) is provided with a plurality of first through holes (112), and the central axes of all the first through holes (112) are on the same plane.

4. The gauge of claim 1, wherein: The number of the first positioning boss (11) is two, and a plurality of second positioning columns (14) which are used for positioning the blister bottom plate (4) are arranged between the two first positioning bosses (11), the second positioning column (14) is integrally formed on the detection plate (1), and all the second positioning columns (14) are arranged in a column.

5. The gauge of claim 4, wherein: The detection plate (1) is also integrally formed with at least two third positioning columns (15), all the third positioning columns (15) are arranged in a column, and the column of the third positioning column (15) is perpendicular to the column of the second positioning column (14).

6. The gauge of claim 4, wherein: The detection plate (1) between the two first positioning bosses (11) is provided with a plurality of second through holes (113), and the central axes of all the second through holes (113) are on the same plane as the central axes of the second positioning columns (14).

7. The gauge of claim 1, wherein: The bottom of the detection plate (1) is provided with at least two recesses (114) in the shape of a long strip, all the first through holes (112) on the same column are in communication with one of the recesses (114), and the second through holes (113) on the same column are in communication with the other recess (114).

8. The gauge for detecting the position of the busbar of the battery pack according to any one of claims 1-6, characterized in that: The bottom of the detection plate (1) is provided with a plurality of support feet (16) which are used for supporting, and the two ends of the upper end face of the detection plate (1) are provided with handles (17).

Images