Equal-size detection device for positive and negative electrode carrier assembly of soft package battery module

Abstract

The utility model belongs to the technical field of size detection of materials of an assembling part of a soft package lithium ion battery module, and discloses a device for detecting the sizes of positive and negative electrode carrier assemblies of the soft package battery module, which is characterized by comprising a size detection plate, and the size detection plate is provided with a boundary dimension lower limit value detection groove and a boundary dimension upper limit value detection groove; each side length of the boundary dimension lower limit value detection groove corresponds to a lower limit value of each side length of the positive and negative electrode carrier assembly or the confluence carrier assembly, and a first copper bar bending angle detection port is arranged in the boundary dimension lower limit value detection groove. Each side length of the boundary dimension upper limit value detection groove corresponds to an upper limit value of each side length of the positive and negative electrode carrier assembly or the confluence carrier assembly, and a second copper bar bending angle detection port is arranged in the boundary dimension upper limit value detection groove. According to the utility model, the measurement time is reduced, the accuracy is higher, the detection efficiency is greatly improved, and defective products caused by the measurement error of a caliper are also prevented from flowing out.

Description

Technical Field

[0001] The utility model belongs to the technical field of size detection of some materials of soft-pack lithium-ion battery module assembly, and specifically relates to a size detection device for positive and negative electrode carrier assemblies of soft-pack battery modules. Background Art

[0002] Soft-pack lithium-ion batteries are widely used in electric vehicles, energy storage and consumer electronics due to their high energy density, high efficiency and long life. They can effectively improve the range and service life of electric vehicles and the performance and efficiency of electronic products and energy storage systems. In the future, soft-pack batteries are expected to further improve their technical level and meet the demand for batteries in a wider range of fields.

[0003] The soft-pack lithium-ion battery module is an intermediate energy storage unit between the battery cell and the battery pack. It is a modular battery pack formed by connecting multiple battery cells in series and parallel, and adding auxiliary structural parts that play the role of collecting current, collecting data, and fixing and protecting the battery cells. In the process flow of the module section, it is necessary to connect and assemble multiple battery cells with various components such as positive and negative electrode carrier assemblies and bus assemblies, plastic end plates, cast aluminum end plates, etc. Before assembling the positive and negative electrode carrier assemblies and bus carrier assemblies, it is necessary to inspect the length and angle of the assemblies to ensure that their dimensions are within the tolerance requirements, otherwise it will affect the assembly compliance of the subsequent process. Due to the large number of external dimensions and the difficulty in measuring the bending angle of the parts, it is time-consuming and laborious to use manual calipers to measure, and fluctuations in employee measurement techniques will also lead to measurement errors. In order to save measurement time and improve detection accuracy, it is necessary to develop an efficient, fast and accurate detection device to improve work efficiency and inspection quality. Utility Model Content

[0004] The utility model aims to provide a device for detecting the dimensions of positive and negative electrode carrier assemblies of a soft-pack battery module, so as to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A size detection device for positive and negative electrode carrier assemblies of a soft-pack battery module, including a size detection plate, on which a lower limit value detection slot for an outer dimension and an upper limit value detection slot for an outer dimension are provided;

[0007] The side lengths of the outer dimension lower limit detection groove respectively correspond to the lower limits of the side lengths of the positive and negative electrode carrier assemblies or the busbar assembly, and the outer dimension lower limit detection groove is provided with a first copper bar bending angle detection port for detecting whether the copper bar bending angle of the positive and negative electrode carrier assemblies is qualified;

[0008] The side lengths of the upper limit value detection groove of the external dimensions respectively correspond to the upper limit values ​​of the side lengths of the positive and negative electrode carrier assemblies or the busbar assembly. A second copper busbar bending angle detection port is provided in the upper limit value detection groove for detecting whether the copper busbar bending angle of the positive and negative electrode carrier assemblies is qualified.

[0009] As a preferred technical solution in the utility model, the lower limit value detection groove of the outer dimension and the upper limit value detection groove of the outer dimension are both located on one side of the dimension detection plate.

[0010] As a preferred technical solution in the present invention, the size detection plate is made of aluminum alloy material.

[0011] As a preferred technical solution in the present utility model, a first arc-shaped groove extending outward is provided at the corner of the lower limit detection groove of the outer dimension.

[0012] As a preferred technical solution in the present utility model, a second arc groove extending outward is provided at the corner of the upper limit value detection groove of the outer dimension.

[0013] Beneficial effects: The utility model can detect the lower limit of each side length of the positive and negative electrode carrier assembly or the busbar assembly through the lower limit detection slot of the outer dimension, detect the upper limit of each side length of the positive and negative electrode carrier assembly or the busbar assembly through the upper limit detection slot of the outer dimension, and quickly determine whether the dimensional tolerance of the detected parts is correct by visual touch, and at the same time determine whether the bending angle of the copper bar of the positive and negative electrode carrier assembly is qualified. After using the device for measurement, it is no longer necessary to use measuring tools such as calipers for multiple measurements, thereby greatly reducing the measurement time, increasing the accuracy, greatly improving the detection efficiency, and avoiding the outflow of defective products caused by caliper measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0015] In the figure: 1-dimension detection plate; 11-lower limit detection slot for outer dimension; 111-bending angle detection port for the first copper bar; 12-upper limit detection slot for outer dimension; 121-bending angle detection port for the second copper bar. DETAILED DESCRIPTION

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0017] Example:

[0018] like Figure 1 As shown, this embodiment provides a size detection device for positive and negative electrode carrier assemblies of soft-pack battery modules, including a size detection plate 1, on which a lower limit value detection slot 11 and an upper limit value detection slot 12 are provided. The lower limit value detection slot 11 is used to detect the lower limit value of each side length of the positive and negative electrode carrier assembly or the busbar carrier assembly, and the upper limit value detection slot 12 is used to detect the upper limit value of each side length of the positive and negative electrode carrier assembly or the busbar carrier assembly. In short, the positive and negative electrode carrier assembly or the busbar carrier assembly cannot be loaded into the lower limit value detection slot 11, but can be loaded into the upper limit value detection slot 12, then the size is qualified, and if this condition is not met, the size is unqualified.

[0019] The side lengths of the outer dimension lower limit detection slot 11 correspond to the lower limits of the side lengths of the positive and negative electrode carrier assemblies or the current collector assembly. When detecting the side lengths of the positive and negative electrode carrier assemblies or the current collector assembly, the side lengths of the positive and negative electrode carrier assemblies or the current collector assembly are set corresponding to the side lengths of the outer dimension lower limit detection slot 11. If the positive and negative electrode carrier assemblies or the current collector assembly cannot be loaded into the outer dimension lower limit detection slot 11, and the side lengths of the positive and negative electrode carrier assemblies or the current collector assembly are greater than the outer dimension lower limit detection slot 11, If the size lower limit detection slot 11 corresponds to the side length dimension, then the side lengths of the positive and negative electrode carrier assemblies or the busbar assembly meet the lower limit requirements, wherein a first copper bar bending angle detection port 111 is provided in the outer dimension lower limit detection slot 11 for detecting whether the bending angle of the copper bar of the positive and negative electrode carrier assembly is qualified. When detecting the side length dimensions of the positive and negative electrode carrier assemblies, the copper bar of the positive and negative electrode carrier assemblies can be inserted into the first copper bar bending angle detection port 111, and if it cannot be inserted, the copper bar bending angle is unqualified, otherwise it is qualified.

[0020] The side lengths of the upper limit value detection slot 12 of the outer dimension respectively correspond to the upper limit values ​​of the side lengths of the positive and negative electrode carrier assemblies or the current collecting carrier assemblies. When detecting the side lengths of the positive and negative electrode carrier assemblies or the current collecting carrier assemblies, the side lengths of the positive and negative electrode carrier assemblies or the current collecting carrier assemblies are set corresponding to the side lengths of the upper limit value detection slot 12 of the outer dimension. If the positive and negative electrode carrier assemblies or the current collecting carrier assemblies can be loaded into the upper limit value detection slot 12 of the outer dimension, then the side lengths of the positive and negative electrode carrier assemblies or the current collecting carrier assemblies meet the upper limit value requirements. If the side lengths If both the lower limit and the upper limit are met at the same time, the external dimensions are qualified; if any side length cannot meet both the lower limit and the upper limit, the external dimensions are unqualified. A second copper bar bending angle detection port 121 is provided in the external dimension upper limit detection slot 12 for detecting whether the bending angle of the copper bar of the positive and negative electrode carrier assemblies is qualified. When detecting the side lengths of the positive and negative electrode carrier assemblies, the copper bar of the positive and negative electrode carrier assemblies can be inserted into the second copper bar bending angle detection port 121; if it cannot be inserted, the copper bar bending angle is unqualified; otherwise, it is qualified.

[0021] The utility model can detect the lower limit of each side length of the positive and negative electrode carrier assembly or the current collecting carrier assembly through the lower limit detection slot 11 of the outer dimension, and detect the upper limit of each side length of the positive and negative electrode carrier assembly or the current collecting carrier assembly through the upper limit detection slot 12 of the outer dimension, and quickly determine whether the dimensional tolerance of the detected parts is correct by visual touch, and at the same time determine whether the bending angle of the copper bar of the positive and negative electrode carrier assembly is qualified. After using the device for measurement, it is no longer necessary to use measuring tools such as calipers for multiple measurements, thereby greatly reducing the measurement time, being more accurate, greatly improving the detection efficiency, and avoiding the outflow of defective products caused by caliper measurement errors.

[0022] As a preferred implementation scheme in this embodiment, it needs to be further explained that the lower limit value detection groove 11 and the upper limit value detection groove 12 of the outer dimension are both located on one side of the dimension detection plate 1, so that the thickness of the dimension detection plate 1 does not need to be too thick, and the dimension detection plate 1 does not need to be turned over during detection, which is more efficient.

[0023] As a preferred technical solution in the present invention, the size detection plate 1 is made of aluminum alloy material to ensure structural stability and thus ensure service life.

[0024] As a preferred technical solution in the utility model, a first arc-shaped groove extending outward is provided at the corner of the lower limit detection groove 11 of the outer dimension (preferably, a plurality of first arc-shaped grooves are provided). If the positive and negative electrode carrier assembly or the current collector assembly is inserted into the lower limit detection groove 11 of the outer dimension, it is convenient to take out the positive and negative electrode carrier assembly or the current collector assembly through the first arc-shaped groove, for example, by inserting a finger into the first arc-shaped groove, or by inserting a tool into the first arc-shaped groove, and then taking out the positive and negative electrode carrier assembly or the current collector assembly.

[0025] As a preferred technical solution in the utility model, a second arc groove extending outward is provided at the corner of the upper limit value detection groove 12 of the outer dimension (preferably, a plurality of second arc grooves are provided). If the positive and negative electrode carrier assembly or the current collector assembly is inserted into the lower limit value detection groove 11 of the outer dimension, it is convenient to take out the positive and negative electrode carrier assembly or the current collector assembly through the second arc groove, for example, by inserting a finger into the second arc groove, or by inserting a tool into the second arc groove, and then taking out the positive and negative electrode carrier assembly or the current collector assembly.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for detecting the dimensions of positive and negative electrode carrier assemblies of soft-pack battery modules, characterized in that: The size detection plate (1) comprises a size detection plate (1), on which a lower limit value detection groove (11) for the outer dimension and an upper limit value detection groove (12) for the outer dimension are provided; The side lengths of the outer dimension lower limit detection groove (11) correspond to the lower limits of the side lengths of the positive and negative electrode carrier assemblies or the busbar assembly, respectively. The outer dimension lower limit detection groove (11) is provided with a first copper bar bending angle detection port (111) for detecting whether the copper bar bending angle of the positive and negative electrode carrier assemblies is qualified. The side lengths of the outer dimension upper limit detection groove (12) respectively correspond to the upper limit values ​​of the side lengths of the positive and negative electrode carrier assemblies or the busbar assembly, and a second copper bar bending angle detection port (121) is provided in the outer dimension upper limit detection groove (12) for detecting whether the copper bar bending angle of the positive and negative electrode carrier assemblies is qualified.

2. A device for detecting dimensions of positive and negative electrode carrier assemblies of a soft-pack battery module according to claim 1, characterized in that: The outer dimension lower limit detection groove (11) and the outer dimension upper limit detection groove (12) are both located on one side of the dimension detection plate (1).

3. A device for detecting dimensions of positive and negative electrode carrier assemblies of a soft-pack battery module according to claim 1 or 2, characterized in that: The size detection plate (1) is made of aluminum alloy material.

4. A device for detecting dimensions of positive and negative electrode carrier assemblies of a soft-pack battery module according to claim 1, characterized in that: A first arc-shaped groove extending outward is provided at the corner of the outer dimension lower limit detection groove (11).

5. The device for detecting the dimensions of the positive and negative electrode carrier assemblies of a soft-pack battery module according to claim 1, characterized in that: A second arc-shaped groove extending outward is provided at the corner of the outer dimension upper limit detection groove (12).

Images