Power battery module steel belt length measuring tool

Abstract

The utility model belongs to lithium ion battery technical field, concretely relates to a power battery module steel band length measurement frock, include: base, fixed on the slide rail of base, install the front slide block seat and rear slide block seat on the slide rail, set up in the front slide block seat's front slide block and set up in the rear slide block's rear slide block, install a plurality of front positioning column on the front slide block seat and install a plurality of rear positioning column on the rear slide block seat, for fixed steel band width, fixed on the base's steel scale, set up in the positioning piece of rear slide block front end, detachable installation is in the front limiting piece of slide rail, the utility model provides a power battery module steel band length measurement frock, through adjustable slide block and multiple sets of positioning column design, can effectively solve the error problem that traditional tool measures long steel band because of deformation amount.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, specifically relating to a tooling for measuring the length of steel strip in a power battery module. Background Technology

[0002] Driven by the global green energy transition, the new energy vehicle and energy storage industries are developing rapidly, leading to an explosive growth in market demand for power battery modules, a core component. During the assembly of power battery modules, steel strips play a crucial role in securing the battery cells and ensuring the structural stability of the module. As the industry's requirements for power battery module energy density, range, and other indicators continue to increase, and module scale expands, the length of the steel strips used to secure the battery cells has significantly increased.

[0003] The increased length of the steel strip leads to a corresponding increase in its deformation. Traditional measuring tools (such as tape measures and calipers) struggle to align with steel strips exceeding 500mm in length, resulting in significantly increased measurement errors and failing to meet high-precision measurement requirements. Specifically, when the steel strip length exceeds 500mm, its deformation makes it impossible for traditional tools to accurately align with the measurement reference, causing measurement results to deviate from the actual length. This may lead to misjudgments of the steel strip specifications, affecting the assembly quality of the power battery module.

[0004] Existing technologies for measuring steel strip length lack effective means of controlling deformation and cannot adapt to steel strips of different widths, making it difficult to meet the demands for high-precision and high-efficiency measurement in production. Therefore, designing a specialized fixture capable of fixing the steel strip width, adjusting the measurement length, and eliminating the influence of deformation is key to solving these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for measuring the length of steel strip in a power battery module, thereby solving the technical problem that existing steel strip length measuring tools cannot measure steel strips with large deformation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tooling for measuring the length of a power battery module steel strip, comprising:

[0007] Base;

[0008] Slide rails fixed to the base;

[0009] Front and rear slider seats are mounted on the slide rail;

[0010] The front slider is located in the front slider seat and the rear slider is located in the rear slider seat;

[0011] Multiple front positioning posts mounted on the front slider seat and multiple rear positioning posts mounted on the rear slider seat are used to fix the width of the steel strip;

[0012] A steel ruler fixed to the base;

[0013] A positioning piece is located at the front end of the rear slider;

[0014] A front limit block that can be detachably installed on the slide rail.

[0015] Preferably, the front positioning post and the rear positioning post are arranged in pairs to form at least three sets of width positioning units.

[0016] Preferably, the rear slider can slide along the slide rail to tighten the steel strip, and the front slider is fixed on the slide rail;

[0017] The front limiting block is fixed to the slide rail after the steel belt is tightened, which limits the backward movement of the slider.

[0018] Preferably, the length of the steel strip is read from the scale value on the steel ruler by the positioning plate, and the actual length is calculated using the following formula:

[0019] C = 2 × (L 读 -L 基 )+2W+2D1+2D2

[0020] in:

[0021] C: Circumference of the entire steel strip;

[0022] L reads: the position indicated by the steel ruler;

[0023] Lbase: The initial position value of the front slider seat on the steel ruler;

[0024] W: The width of the steel strip determined by the selected positioning post assembly specifications;

[0025] D1: Distance from the center of the front positioning post to the edge of the front slider seat;

[0026] D2: Distance from the center of the rear positioning post to the edge of the rear slider seat.

[0027] Preferably, the front limiting block is detachably installed at the end of the slide rail to lock the final position of the rear slider.

[0028] Preferably, the front slider seat and the rear slider seat are respectively provided with positioning holes, and the front positioning post and the rear positioning post are respectively inserted into the positioning holes.

[0029] Preferably, the front positioning post and the rear positioning post are spaced at the same distance and are parallel to the slide rail direction to ensure that the steel strip is horizontally taut.

[0030] Preferably, the steel ruler is fixed to the base surface with structural adhesive, and the scale direction is parallel to the slide rail.

[0031] Preferably, the positioning piece is vertically fixed to the front end of the rear slider, and its edge is aligned with the scale of the steel ruler.

[0032] Preferably, both the front and rear slider seats are provided with mounting holes to accommodate the combined installation of positioning columns of different specifications.

[0033] The beneficial effects of this utility model are as follows: The power battery module steel strip length measuring fixture provided by this utility model, through its adjustable slider and multiple sets of positioning pins, can effectively solve the error problem caused by deformation when measuring long steel strips with traditional tools. The fixture uses the sliding of the rear slider on the slide rail to tighten the steel strip, and the positioning pins fix the width, so that the steel strip maintains a regular shape under tension. Then, by reading the scale of the steel ruler and positioning plate, and subtracting the initial position of the positioning pins, the length of the steel strip is accurately obtained, significantly improving the measurement accuracy.

[0034] This tooling integrates a steel ruler, eliminating the need for additional tools. Its adjustable structure adapts to steel strips of different lengths and widths. The three-stage operation process is highly standardized, covering the measurement needs of multiple specifications of steel strips while ensuring long-term reliability through a modular and stable structure. It provides an efficient and accurate solution for steel strip length detection in power battery module production, effectively supporting product quality control. Attached Figure Description

[0035] Figure 1 This is a top view of the present invention;

[0036] Figure 2 This is the front view of the present invention;

[0037] Figure 3 This is an exploded view of the present invention;

[0038] Figure 4 A schematic diagram of the front slider seat in this utility model;

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Rear slider seat; 2. Slide rail; 3. Rear limit block; 4. Rear slider; 5. Base; 6. Front positioning post; 7. Front slider seat; 8. Front slider; 9. Positioning piece; 10. Front limit block; 11. Fixing bolt; 12. Steel strip; 13. Rear positioning post; 14. Steel ruler. Detailed Implementation

[0041] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0042] like Figures 1-4As shown, a tooling for measuring the length of a power battery module steel strip includes: a rear slider seat 1, a slide rail 2, a rear limit block 3, a rear slider 4, a base 5, a front positioning post 6, a front slider seat 7, a front slider 8, a positioning piece 9, and a front limit block 10; the slide rail 2 is fixed on the base 5; the front slider seat 7 and the rear slider seat 1 are mounted on the slide rail 2, and the front slider seat 7 and the rear slider seat 1 are respectively provided with positioning holes, and the front positioning post and the rear positioning post are respectively inserted into the positioning holes.

[0043] The front slider seat 7 is connected to the slide rail via the front slider 8, and the rear slider seat 1 is connected to the slide rail via the rear slider 4; the rear slider 4 can slide along the slide rail 2 to tighten the steel strip, and the front slider 8 is fixed on the slide rail 2.

[0044] Multiple front positioning posts 6 are installed on the front slider seat 7, and multiple rear positioning posts 13 are installed on the rear slider seat 1, for fixing the width of the steel strip; the front positioning posts 6 and the rear positioning posts 13 are arranged in pairs to form at least three sets of width positioning units. The front positioning posts 6 and the rear positioning posts 13 are spaced at the same distance and are parallel to the direction of the slide rail 2 to ensure that the steel strip is horizontally taut.

[0045] The steel ruler 14 is fixed to the surface of the base 5 with structural adhesive, and its scale direction is parallel to the slide rail 2. The positioning piece 9 is vertically fixed to the front end of the rear slider 4, and its edge is aligned with the scale of the steel ruler 14.

[0046] The front limit block 10 is detachably installed on the slide rail 2. After the steel belt is tightened, the front limit block 10 is fixed to the slide rail 2, which restricts the backward movement of the slider 4.

[0047] The length of the steel strip is read from the scale value on the steel ruler 14 using the positioning piece 9. The actual length is calculated using the following formula:

[0048] C = 2 × (L 读 -L 基 )+2W+2D1+2D2

[0049] in:

[0050] C: Circumference of the entire steel strip;

[0051] L 读 The positioning piece is at the value indicated by the steel ruler;

[0052] L 基 : The initial position value of the front slider seat on the steel ruler;

[0053] W: The width of the steel strip determined by the selected positioning post assembly specifications;

[0054] D1: Distance from the center of the front positioning post to the edge of the front slider seat;

[0055] D2: Distance from the center of the rear positioning post to the edge of the rear slider seat.

[0056] In use, the slide rail 2 is vertically fixed to the upper surface of the base 5 by fixing bolts 11, ensuring that the direction of the slide rail is parallel to the scale direction of the steel ruler 14 (the steel ruler is fixed to the base surface by structural adhesive, and the scale line is consistent with the extension direction of the slide rail).

[0057] The front slider seat 7 is installed at the front end of the slide rail via the front slider 8, and the front slider 8 is fixed in place; the rear slider seat 1 is installed at the rear end of the slide rail via the rear slider 4, and the rear slider 4 can slide along the slide rail.

[0058] Front positioning pins 6 and rear positioning pins 13 are inserted into the positioning holes of the front slider seat 7 and the rear slider seat 1. For example, the front slider seat is equipped with 6 front positioning pins and the rear slider seat is equipped with 6 rear positioning pins, forming three sets of width positioning units;

[0059] The positioning piece 9 is vertically fixed to the front end of the rear slider 4, and its edge is aligned with the scale line of the steel ruler 14.

[0060] The front limit block 10 is not fixed in the initial state, but is used to lock the position of the rear slider after the steel strip is tightened.

[0061] Step 1: Positioning and Installation (taking "W2" as an example, the width of the steel strip)

[0062] Take the steel strip to be tested and confirm that its width specification corresponds to the "W2" positioning unit of the tooling (i.e., front positioning posts 6-3, 6-4 and rear positioning posts 13-3, 13-4).

[0063] Place the steel strip onto the selected positioning post group: one edge of the steel strip should be attached to the front positioning posts 6-3 and 6-4, and the other edge should be attached to the rear positioning posts 13-3 and 13-4, to ensure that the width of the steel strip is accurately fixed.

[0064] Step 2: Tighten and fix

[0065] Slide the rear slider 4 backward along the slide rail, causing the rear slider seat 1 to move until the steel strip is fully taut and the deformation is eliminated.

[0066] When the rear slider 4 slides to the point where it can no longer move, the front limit block 10 is detachably installed at the end of the slide rail and fixed with bolts to restrict the rear slider from moving back and ensure that the steel belt remains taut.

[0067] Step 3: Length Reading and Calculation

[0068] Read the corresponding scale value of the positioning piece 9 on the steel ruler 14 and record it as L. 读 Simultaneously record the initial position value of the front slider seat 7 on the steel ruler, denoted as L. 基 .

[0069] The circumference C of the entire steel strip is calculated using the formula: C = 2 × (L) 读 -L 基 )+2W+2D1+2D2

[0070] in:

[0071] C: Circumference of the entire steel strip;

[0072] L reads: the position indicated by the steel ruler;

[0073] Lbase: The initial position value of the front slider seat on the steel ruler;

[0074] W: The width of the steel strip determined by the selected positioning post assembly specifications; (determined by the positioning post specifications, such as "W2" corresponding to the preset W value)

[0075] D1: Distance from the center of the front locating post to the edge of the front slider seat; (fixed parameter, determined by the tooling structure)

[0076] D2: Distance from the center of the rear positioning post to the edge of the rear slider seat; a fixed parameter determined by the tooling structure.

[0077] Adaptation operation of steel strips of different specifications

[0078] Width adjustment: If the width of the steel strip to be measured corresponds to "W1" or "W3", then replace the positioning post group (e.g., W1 corresponds to the front positioning posts 6-1, 6-2 and the rear positioning posts 13-1, 13-2). The corresponding positioning posts can be inserted through the positioning holes of the front and rear slider seats.

[0079] Length adjustment: For steel strips of different lengths, the tension can be adjusted by sliding the rear slider 4. The front limit block 10 locks the position of the rear slider to ensure that the steel strip is measured under tension.

[0080] This fixture achieves high-precision measurement of steel strips of different specifications through a three-section design: fixed width of the positioning post, tension length of the slider, and measurement by steel ruler scale. Its core lies in using an adjustable slider to eliminate steel strip deformation and in using modular positioning posts to adapt to multiple specifications, solving the problem of large errors when measuring long steel strips with traditional tools. It is suitable for quality inspection in the production of power battery modules.

[0081] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A tooling for measuring the length of steel strip in a power battery module, characterized in that, include: Base (5); Slide rail (2) fixed on base (5); The front slider seat (7) and the rear slider seat (1) are mounted on the slide rail (2); The front slider (8) is located on the front slider seat (7) and the rear slider (4) is located on the rear slider seat (1). Multiple front positioning posts (6) installed on the front slider seat (7) and multiple rear positioning posts (13) installed on the rear slider seat (1) are used to fix the width of the steel strip; A steel ruler (14) fixed on the base (5); Positioning piece (9) is set at the front end of the rear slider (4); A front limit block (10) that can be detachably installed on the slide rail (2).

2. The measuring fixture according to claim 1, characterized in that: The front positioning post (6) and the rear positioning post (13) are arranged in pairs to form at least three sets of width positioning units.

3. The measuring fixture according to claim 1, characterized in that: The rear slider (4) can slide along the slide rail (2) to tighten the steel strip, and the front slider (8) is fixed on the slide rail (2); The front limiting block (10) is fixed to the slide rail (2) after the steel belt is tightened, which restricts the back slide block (4) from moving back.

4. The measuring fixture according to claim 1, characterized in that: The length of the steel strip is read from the scale value on the steel ruler (14) by the positioning piece (9), and the actual length is calculated using the following formula: C=2×(L 读 −L 基 )+2W+2D1+2D2 in: C: Circumference of the entire steel strip; L reads: the position indicated by the steel ruler; Lbase: The initial position value of the front slider seat on the steel ruler; W: The width of the steel strip determined by the selected positioning post assembly specifications; D1: Distance from the center of the front positioning post to the edge of the front slider seat; D2: Distance from the center of the rear positioning post to the edge of the rear slider seat.

5. The measuring fixture according to claim 1, characterized in that: The front limit block (10) is detachably installed at the end of the slide rail (2) to lock the final position of the rear slider (4).

6. The measuring fixture according to claim 1, characterized in that: The front slider seat (7) and the rear slider seat (1) are respectively provided with positioning holes, and the front positioning post and the rear positioning post are respectively inserted into the positioning holes.

7. The measuring fixture according to claim 2, characterized in that: The front positioning post (6) and the rear positioning post (13) are spaced at the same distance and are parallel to the direction of the slide rail (2) to ensure that the steel strip is horizontally taut.

8. The measuring fixture according to claim 1, characterized in that: The steel ruler (14) is fixed to the surface of the base (5) with structural adhesive, and the scale direction is parallel to the slide rail (2).

9. The measuring fixture according to claim 1, characterized in that: The positioning piece (9) is vertically fixed to the front end of the rear slider (4), and its edge is aligned with the scale of the steel ruler (14).

10. The measuring fixture according to claim 1, characterized in that: Both the front slider seat (7) and the rear slider seat (1) are provided with mounting holes for adapting to the combined installation of positioning columns of different specifications.

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