CN217403365U

CN217403365U - Device for detecting thickness fluctuation of square battery area

Info

Publication number: CN217403365U
Application number: CN202221264508.9U
Authority: CN
Inventors: 王增森; 葛科; 王化胜; 蒋倩
Original assignee: Jiangsu Higee Energy Co Ltd
Current assignee: Jiangsu Higee Energy Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-09-09
Anticipated expiration: 2032-05-25

Abstract

The utility model relates to a detect regional thickness fluctuation's of square battery device, including base, guide arm, slide bar, vertical measurement chi and digital display screen, the base is equipped with spacing module, and the battery setting is in spacing module, and the guide arm setting of two parallels is in the top of base, the guide arm passes through the leg joint base, is equipped with the slide bar between two guide arms, the interval is equipped with a plurality of vertical measurement chi on the slide bar, digital display screen display vertical measurement chi's removal numerical value. The utility model discloses simple structure, convenient operation detects the thickness difference of the different regions of battery, through detailed quantization data, carries out further analysis to the bloated reason of battery and combs, and the actual thickness scope of better aassessment battery provides data support for subsequent PACK equipment.

Description

Device for detecting thickness fluctuation of square battery area

Technical Field

The utility model relates to a lithium cell manufacturing technology field, concretely relates to detect undulant device of square battery region thickness.

Background

The square aluminum shell battery is mainly divided into a lamination process and a winding process at the present stage, the deformation and the bulging of a battery core are caused by the stress of a battery core pole piece and the rebound and expansion of a negative electrode in the charging and discharging processes of the battery core of the winding process, the bulging of the battery is easily caused in the manufacturing process of the battery, and in the actual production, the thickness of the battery has certain process requirements, so the detailed test and reason analysis are carried out on the thickness of the battery.

The method for testing the thickness of the battery in the prior art is single, the thickness data of the battery is obtained by feedback of a sensor after a certain pressure is applied, the thickness of the method is distorted, and the reason that the failure of the battery is caused by gas expansion or hard expansion, namely the thickness of a positive pole column region is higher or the thickness of a negative pole column region is higher cannot be found well. The bulging of different areas of the square battery represents different reasons, the specific reasons of the battery thickness difference can be further analyzed by measuring the thickness fluctuation of the different areas of the battery, and then the inspection is carried out to solve the problem, so the measurement of the thickness fluctuation difference of the different areas of the battery is particularly important.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the aforesaid not enough, provide a detect the undulant device of square battery regional thickness, simple structure, convenient operation detects the different regional thickness differences of battery, through detailed quantization data, carries out further analysis to the bloated reason of battery and combs, and the actual thickness scope of better aassessment battery provides data support for subsequent PACK equipment.

The purpose of the utility model is realized like this:

the utility model provides a detect regional thickness of square battery undulant device, includes base, guide arm, slide bar, vertical measurement chi and digital display screen, the base is equipped with spacing module, and the battery setting is in spacing module, and the guide arm setting of two parallels is in the top of base, the guide arm passes through the leg joint base, is equipped with the slide bar between two guide arms, the interval is equipped with a plurality of vertical measurement chi on the slide bar, digital display screen display vertical measurement chi's removal numerical value.

Preferably, the limiting module comprises a track groove and a limiting block, the base is transversely provided with the track groove, the two transverse track grooves and the two longitudinal track grooves are enclosed to form a battery accommodating cavity, the track grooves are internally provided with the limiting block in a sliding manner, and the limiting block limits the battery in the battery accommodating cavity.

Preferably, the vertical measuring scale is a digital display measuring scale, a capacitive grating sensor of the vertical measuring scale is connected with a digital display screen, and the digital display screen is fixed on the base.

Preferably, the sliding rod is parallel to the width direction of the battery, and a measuring scale knob is arranged on the sliding rod corresponding to the vertical measuring scale.

Preferably, the battery is horizontally placed in the limiting module of the base, the height direction of the battery is consistent with the horizontal direction, and the thickness direction of the battery is consistent with the vertical direction.

Preferably, the plurality of vertical measuring scales are uniformly distributed in the width direction of the battery.

Preferably, a plurality of rows of measurement points are partitioned at intervals in the thickness direction of the battery.

Preferably, the base is transversely provided with a measuring point position mark.

The beneficial effects of the utility model are that:

1. detecting the thickness difference of different areas of the battery;

2. the thickness of actually different areas of the battery can be tested by production process personnel;

3. further analyzing and carding the swelling reasons of the battery through detailed quantitative data;

4. the actual thickness range of the battery is better evaluated, and data support is provided for subsequent PACK assembly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a rear view of fig. 1.

Wherein: a base 1; a guide rod 2; a slide lever 3; a vertical measuring scale 4; a digital display screen 5; a track groove 6; a limiting block 7; a battery 8; a support 9; a measuring scale knob 10; a data clear key 11; a data confirmation key 12.

Detailed Description

Referring to fig. 1 and 2, the utility model relates to a detect undulant device of square battery regional thickness, including base 1, guide arm 2, slide bar 3, vertical measurement chi 4 and digital display screen 5, base 1 is equipped with spacing module, and battery 8 sets up in spacing module, and the guide arm 2 of two parallels sets up in base 1's top, base 1 is connected through support 9 to guide arm 2, is equipped with slide bar 3 between two guide arms 2, the interval is equipped with a plurality of vertical measurement chi 4 on the slide bar 3, vertical measurement chi 4 is the digital display dipperstick, the appearance bars sensor connection digital display screen 5 of vertical measurement chi 4, digital display screen 5 is fixed on base 1.

Spacing module includes track groove 6 and stopper 7, transversely and vertically being equipped with track groove 6 on the base 1, two transversely and two fore-and-aft track grooves 6 enclose into the battery and hold the chamber, slide in the track groove 6 and be equipped with stopper 7, and stopper 7 is spacing at the battery with battery 8 and holds the intracavity.

The sliding rod 3 is parallel to the width direction of the battery, and a measuring scale knob 10 is arranged on the sliding rod 3 corresponding to the vertical measuring scale 4.

The base 1 is also provided with a data zero clearing key 11 and a data confirmation key 12.

The battery 8 is horizontally placed in the battery accommodating cavity of the base 1, the height direction of the battery 8 is consistent with the horizontal transverse direction, the thickness direction of the battery 8 is consistent with the vertical direction, and the thickness of the battery 8 is measured in the vertical direction.

A plurality of vertical measuring scales 4 are evenly distributed in the width direction of the battery 8.

A plurality of rows of measuring point positions are divided at intervals in the thickness direction of the battery 8, and measuring point position marks are transversely arranged on the base.

The distribution of the test point positions is properly adjusted according to the size of the plane of the battery, and the more test data, the clearer the fluctuation condition of the surface of the battery.

The measuring method comprises the following steps:

1. the method comprises the following steps of placing a base 1 on a plane, lowering all vertical measuring scales 4 to the plane of the base 1, enabling the vertical measuring scales 4 to be in contact with the base 1, pressing a data zero clearing key 11 at the moment, resetting data of a digital display screen 5, lifting the vertical measuring scales 4 (the numerical value of the display screen is lifted and descended along with the lifting of the measuring scales to become large and small) to a certain height, screwing a measuring scale knob 10, fixing the vertical measuring scales 4, placing a battery 8, and enabling the battery 8 to be located in a limiting module so as to fix the battery;

2. manually moving the movable rod 3, transversely moving the movable rod 3 along the guide rod, driving a row of vertical measuring scales 4 on the movable rod 3 to move to a first row of measuring points of the battery (the first row of measuring points are positioned at the position of 5mm at the bottom of the battery), opening a measuring scale knob 10, enabling the vertical measuring scales 4 to fall to contact the surface of the battery, pressing a data confirmation key at the moment, and displaying the moving numerical values of the vertical measuring scales on the display screen 5;

3. the vertical measuring scale 4 is lifted and screwed, the moving rod 3 is continuously moved manually, the moving rod 3 moves transversely along the guide rod, the row of vertical measuring scales 4 on the moving rod 3 is driven to move to the next row of measuring point positions of the battery, the measuring scale knob 10 is opened, the vertical measuring scales 4 fall to contact the surface of the battery, at the moment, the data confirmation key is pressed down, and the moving numerical value of each vertical measuring scale is displayed on the display screen 5;

4. and (5) repeating the step (3) and measuring each row of measurement point positions.

5. The measured thickness data is made into a table, and the regional thickness fluctuation of the battery can be displayed very clearly through the thickness plane data, so that the further thickness reason analysis is carried out.

Example 1:

take battery 48173170 and 120Ah as examples

5 vertical measuring scales 4 are arranged on the movable rod 3 at intervals, 5 rows of measuring points are divided in the thickness direction of the battery 8 at intervals, and according to the measuring method, the measuring data are as follows:

the test data shows that: the whole certain end of the battery shows the phenomenon of bulging instead of middle bulging, and the case is likely to bulge due to the deformation of the internal winding core, and further disassembly and analysis are needed.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A device for detecting square battery area thickness fluctuation is characterized in that: including base (1), guide arm (2), slide bar (3), vertical measurement chi (4) and digital display screen (5), base (1) is equipped with spacing module, and battery (8) set up in spacing module, and guide arm (2) of two parallels set up the top at base (1), base (1) is connected through support (9) in guide arm (2), is equipped with slide bar (3) between two guide arms (2), the interval is equipped with a plurality of vertical measurement chi (4) on slide bar (3), and digital display screen (5) show the removal numerical value of vertical measurement chi (4).

2. The apparatus according to claim 1, wherein the thickness of the prismatic battery is varied by: spacing module includes track groove (6) and stopper (7), transversely and vertically be equipped with track groove (6) on base (1), two transversely and two fore-and-aft track grooves (6) enclose into the battery and hold the chamber, slide in track groove (6) and be equipped with stopper (7), and stopper (7) are spacing battery (8) and hold the intracavity at the battery.

3. The apparatus according to claim 1, wherein the thickness of the prismatic battery is varied by: the vertical measuring scale (4) is a digital display measuring scale, a capacitive grating sensor of the vertical measuring scale (4) is connected with a digital display screen (5), and the digital display screen (5) is fixed on the base (1).

4. The apparatus according to claim 1, wherein the thickness of the prismatic battery is varied by: the slide bar (3) is parallel to the width direction of the battery, and a measuring scale knob (10) is arranged on the slide bar (3) corresponding to the vertical measuring scale (4).

5. The apparatus for detecting square battery zone thickness fluctuation according to claim 1, wherein: the battery (8) is horizontally placed in the limiting module of the base (1), the height direction of the battery (8) is consistent with the horizontal transverse direction, and the thickness direction of the battery (8) is consistent with the vertical direction.

6. The apparatus according to claim 5, wherein the thickness of the square battery region is fluctuated by: a plurality of vertical measuring scales (4) are uniformly distributed in the width direction of the battery (8).

7. The apparatus according to claim 1, wherein the thickness of the prismatic battery is varied by: multiple rows of measurement point positions are divided in the thickness direction of the battery (8) at intervals.

8. The apparatus according to claim 7, wherein the thickness of the prismatic battery is varied by: the base (1) is transversely provided with a measuring point position mark.