Tool for assisting in measuring height of battery case terminal

Abstract

The utility model discloses a tool for assisting in measuring the height of a battery case terminal, which comprises a sleeve main body, the sleeve main body is provided with a first surface and a second surface which are opposite to each other, the sleeve main body is provided with an accommodating cavity used for sleeving a battery case, and the accommodating cavity is formed by inwards sinking the first surface of the sleeve main body; the through hole is used for exposing the terminal, is arranged on the second surface of the sleeve main body and is communicated with the accommodating cavity; and the test holes are used for guiding and positioning the test pins, and the test holes are formed in the circumferential side wall of the through hole at intervals. The tool provided by the utility model can complete the measurement of the reference point more accurately and rapidly, reduces the measurement error, and improves the measurement speed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery component testing, in particular to a tool for assisting in measuring the height of a battery shell terminal. Background Art

[0002] The terminal is an important component of the battery, and the terminal height is an important factor in determining the battery quality. Terminal height that does not meet process requirements is one of the main factors that cause terminal sparks, which may cause terminal sparks during battery installation, use and maintenance.

[0003] At present, there are two ways to detect terminal height: some use rulers or height gauges. However, due to the influence of the detection personnel's techniques and experience, the judgment conclusion may be biased. Some use non-standard height monitoring tooling equipment to detect by sliding the benchmark against each other, but the accuracy is not high and the tooling equipment cost is high. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a tool for assisting in measuring the height of battery shell terminals, which can more accurately and quickly complete the measurement of reference points, reduce measurement errors, and improve measurement speed.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A tool for assisting in measuring the height of a battery shell terminal comprises a sleeve body, the sleeve body having a first surface and a second surface opposite to each other, and the sleeve body is provided with:

[0007] An accommodating cavity for sleeve-mounting the battery shell, the accommodating cavity being formed by an inward depression of the first surface of the sleeve body;

[0008] A through hole for exposing the terminal, the through hole being arranged on the second surface of the sleeve body and communicating with the accommodating cavity;

[0009] The test holes are used for guiding and positioning the test needles. A plurality of the test holes are arranged at intervals on the circumferential side walls of the through hole.

[0010] Furthermore, the through hole is in a circular hole shape, and the diameter of the through hole is between 19 mm and 21 mm.

[0011] Furthermore, the accommodating cavity is cylindrical, and the axis of the accommodating cavity is colinear with the axis of the through hole.

[0012] Furthermore, the height of the accommodating cavity is greater than 5 mm.

[0013] Furthermore, the testing hole is in a semicircular arc shape.

[0014] Furthermore, the radius of the test hole is between 0.8 mm and 1.2 mm.

[0015] Furthermore, four test holes are provided, and the four test holes are arranged in a circle with equal intervals.

[0016] Furthermore, eight test holes are provided, and the eight test holes are arranged circumferentially at equal intervals.

[0017] Furthermore, the sleeve body is made of plastic material.

[0018] Furthermore, the inner edge of the opening end of the accommodating cavity is provided with a chamfer.

[0019] In summary, the tooling for assisting in measuring the height of battery shell terminals provided by the utility model has the following technical effects:

[0020] The tool can be used in conjunction with a height gauge and a reference point difference calculation method. During specific measurements, a battery shell to be measured is placed on a workbench of the height gauge, the tool is sleeved on one end of the battery shell where a terminal is provided, and the test holes are used to assist in determining the positions of multiple reference points. The test needle measures multiple times at multiple reference points determined by the test holes, and then the test needle measures multiple times at a corresponding number of points on the terminal exposed by the through hole. The height of the terminal is obtained by calculating the average difference. In this way, with the aid of the tool that assists in positioning, there is no need to use a caliper to measure and position when using the reference point difference calculation method, thereby improving the accuracy and detection efficiency of the reference point position taken by the test needle, greatly reducing the measurement error caused by manual point selection, and improving the measurement speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of the tooling of the embodiment of the utility model;

[0022] Figure 2 This is the second structural schematic diagram of the tooling of the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the top view of the tooling structure of an embodiment of the utility model;

[0024] Figure 4 for Figure 3 The cross-sectional structural diagram at AA shown;

[0025] Figure 5 This is a schematic diagram of the structure of the tooling installed on the battery shell according to an embodiment of the utility model.

[0026] The meanings of the reference numerals are as follows:

[0027] 1. Sleeve body; 11. First surface; 12. Second surface; 13. Accommodating cavity; 14. Through hole; 15. Test hole; 2. Battery shell; 21. Terminal. DETAILED DESCRIPTION

[0028] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] See also Figures 1 to 5 The utility model discloses a tool for assisting in measuring the height of a battery shell terminal. The tool can be used in conjunction with a height gauge and a reference point difference calculation method to measure the height of a terminal 21.

[0032] It should be noted that the terminal 21 is arranged on the battery shell 2. More specifically, the battery shell 2 is cylindrical, and the terminal 21 is arranged at one end of the battery shell 2. The height gauge is a conventional measuring instrument, which includes a workbench and a liftable test needle.

[0033] In this embodiment, the tooling includes a sleeve body 1, which has a first face 11 and a second face 12 opposite to each other, and is provided with a housing cavity 13, a through hole 14 and a plurality of test holes 15. The housing cavity 13 is used to sleeve the battery shell 2, and the housing cavity 13 is formed by the first face 11 of the sleeve body 1 being recessed inward; the through hole 14 is used to expose the terminal 21, and the through hole 14 is provided on the second face 12 of the sleeve body 1 and connected to the housing cavity 13, and the through hole 14 is larger than the terminal 21, so that while exposing the terminal 21, the reference point area of ​​the end face of the battery shell 2 can also be exposed; the test hole 15 is used to guide and position the test needle, and a plurality of test holes 15 are arranged at intervals on the circumferential side wall of the through hole 14.

[0034] When the height of the terminal 21 is specifically measured by means of the tooling of this embodiment, the following reference point difference calculation method is applicable:

[0035] Step A, placing the battery shell 2 to be measured on the workbench of the height gauge, and setting the tool sleeve on the high plane of the negative shoulder of the battery shell 2, that is, setting the tool sleeve on the end of the battery shell 2 with the terminal 21, specifically, inserting the end of the battery shell 2 with the terminal 21 into the accommodating cavity 13, and exposing the terminal 21 at the through hole 14. At this time, the test hole 15 will also surround the peripheral area of ​​the terminal 21;

[0036] Step B, using the multiple test holes 15 to determine multiple reference points, by moving the battery case 2 on the workbench, inserting the test needle into different test holes 15, and measuring the height parameters L1, L2, ..., L of the multiple reference points. N ;

[0037] Step C, using a test needle to measure a corresponding number of points on the terminal 21 exposed by the through hole 14 for multiple times, and obtaining height parameters S1, S2, ..., S N ;

[0038] Step D, the height H of the terminal 21 is calculated by the average difference formula, and the average difference formula is H=((L1+L2+, ..., +L N )-(S1+S2+、...、+S N )) / N.

[0039] Thus, in the above scheme, with the aid of the tooling that assists in positioning, the test holes 15 are used to assist in determining the positions of multiple reference points. When using the reference point difference calculation method, there is no need to use a caliper to measure and position, thereby improving the accuracy and detection efficiency of the reference point position of the test needle, greatly reducing the measurement error caused by manual point selection, and improving the measurement speed. At the same time, the tooling has a simple structure, is easy to manufacture, and has a low cost.

[0040] As a preferred specific example, the terminal 21 is a positive pole terminal, the battery shell 2 is a cylindrical steel shell, and the reference area of ​​the end surface of the battery shell 2 is a negative electrode area. Of course, the terminal 21 can also be a negative terminal, depending on the different types of battery shells 2 to be measured; the battery shell 2 can also be made of other materials; the battery shell 2 can also be rectangular, etc.

[0041] Since the battery shell 2 is cylindrical, the accommodating cavity 13 is also preferably cylindrical. In order to prevent the tool from loosening during use, the sleeve body 1 is made of plastic material, and the accommodating cavity 13 and the battery shell 2 are interference fit. In this way, when the tool is sleeved on the battery shell 2, it will not loosen, ensuring that the position of the test hole 15 remains unchanged, further improving the accuracy of the reference point.

[0042] In addition, a chamfer 16 is provided at the inner edge of the opening end of the accommodating cavity 13, and the chamfer 16 can play a guiding role when the sleeve body 1 is installed to the battery shell 2, avoiding friction and generating scraps, and is also conducive to pre-positioning during interference fit.

[0043] It should be noted that when the shape of the battery shell 2 changes, the shape of the accommodating cavity 13 also changes accordingly.

[0044] In this embodiment, preferably, the through hole 14 is in the shape of a circular hole, so that the terminal 21 can be located at the exact center of the through hole 14 during use, so that the multiple test holes 15 are also arranged around the central circumference of the terminal 21. Further preferably, the diameter of the through hole 14 is between 19 mm and 21 mm, and specifically, the diameter of the through hole 14 is 20±0.5 mm, which controls the deviation range and improves the uniformity of the reference point selection.

[0045] Based on the fact that the battery shell 2 and the accommodating cavity 13 are both cylindrical, it is further preferred that the axis of the accommodating cavity 13 is colinear with the axis of the through hole 14 to avoid the through hole 14 being offset relative to the terminal 21 due to the rotation of the sleeve body 1. Preferably, the height of the accommodating cavity 13 is greater than 5 mm to ensure that it is not easy to get loose after being installed in the battery shell 2. As a specific example, the height of the accommodating cavity 13 is 7 mm.

[0046] In this embodiment, in order to better fit the test needle, the test hole 15 is semicircular to avoid the deviation caused by repeated use. Preferably, the radius of the test hole 15 is between 0.8 mm and 1.2 mm, and specifically, the radius of the test hole 15 is 1 ± 0.1 mm, so as to control the deviation.

[0047] As a specific example, there are eight test holes 15, and the eight test holes 15 are arranged circumferentially at equal intervals, that is, the circumferential angle between two adjacent test holes 15 is 45°. When four reference points and four terminal points are taken for four measurements respectively, the four reference heights can be measured by taking one reference point at intervals of one test hole 15, and the circumferential angle between adjacent reference points can be controlled within the range of 90±1°; at the same time, the four test holes 15 that are spaced apart can be used to measure the point heights four times corresponding to the four points of the terminal 21, and the circumferential angle between adjacent terminal points can be controlled within the range of 90±1° by adding the deviation value, so that the reference points and terminal points are staggered, and in particular, multiple terminal points are controlled to be arranged on a circle with a diameter of 10±0.5mm.

[0048] In other examples, four test holes 15 may be provided, and the four test holes 15 are arranged circumferentially at equal intervals, that is, the circumferential angle between two adjacent test holes 15 is 90°. When four reference points and four terminal points are taken for four measurements respectively, one reference point is taken for each test hole 15, and a deviation value is added to control the circumferential angle between adjacent reference points within the range of 90±1°; at the same time, each test hole 15 corresponds to four points of the selected terminal 21, and a deviation value is added to control the circumferential angle between adjacent terminal points within the range of 90±1°. Similarly, it is preferred to control multiple terminal points to be arranged on a circle with a diameter of 10±0.5mm.

[0049] Of course, the number of the test holes 15 can also be five, six, etc., depending on the number of reference points that need to be taken. Similarly, it is preferred to control the multiple test holes 15 to be arranged in a circle with equal spacing.

[0050] In the above scheme, the significance of controlling multiple reference points to be arranged on a circle with a diameter of 20±0.5mm and controlling multiple terminal points to be arranged on a circle with a diameter of 10±0.5mm is to unify the measurement standards, improve the quality assurance capability of the detection process, and improve uniformity and accuracy.

[0051] The tooling provided by the utility model can complete the measurement of the reference point more accurately and quickly when assisting in measuring the height of the battery shell terminal. It only takes 1 minute to measure the required parameters and thus calculate the height of the terminal 21, which greatly reduces the measurement error caused by manual point selection. It has a simple structure, is easy to use, and has low cost.

[0052] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A tool for assisting in measuring the height of a battery shell terminal, characterized in that: The invention comprises a sleeve body, wherein the sleeve body has a first surface and a second surface opposite to each other, and the sleeve body is provided with: An accommodating cavity for sleeve-mounting a battery shell, wherein the accommodating cavity is formed by an inward depression of the first surface of the sleeve body; A through hole for exposing the terminal, the through hole being arranged on the second surface of the sleeve body and communicating with the accommodating cavity; A test hole for guiding and positioning a test needle, wherein a plurality of the test holes are provided and are spaced apart on the circumferential side wall of the through hole.

2. The tool for assisting in measuring the height of battery shell terminals according to claim 1, characterized in that: The through hole is in a circular hole shape, and the diameter of the through hole is between 19 mm and 21 mm.

3. The tool for assisting in measuring the height of battery shell terminals according to claim 2, characterized in that: The accommodating cavity is cylindrical, and the axis of the accommodating cavity is colinear with the axis of the through hole.

4. The tool for assisting in measuring the height of battery shell terminals according to claim 3, characterized in that: The height of the accommodating cavity is greater than 5 mm.

5. The tool for assisting in measuring the height of battery shell terminals according to any one of claims 1 to 3, characterized in that: The testing hole is in a semicircular shape.

6. The tool for assisting in measuring the height of battery shell terminals according to claim 4, characterized in that: The radius of the test hole is between 0.8 mm and 1.2 mm.

7. The tool for assisting in measuring the height of battery shell terminals according to claim 4, characterized in that: There are four test holes, and the four test holes are arranged in a circle with equal spacing.

8. The tool for assisting in measuring the height of battery shell terminals according to claim 4, characterized in that: There are eight test holes, and the eight test holes are arranged in a circle with equal spacing.

9. The tool for assisting in measuring the height of battery shell terminals according to claim 1, characterized in that: The sleeve body is made of plastic material.

10. The tool for assisting in measuring the height of battery shell terminals according to claim 1, characterized in that: The inner edge of the opening end of the accommodating cavity is provided with a chamfer.

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