CN218956767U

CN218956767U - Quick detection device for resistance and voltage of lithium ion battery shell

Info

Publication number: CN218956767U
Application number: CN202222663971.7U
Authority: CN
Inventors: 王学锋; 王岑; 董帅; 于刚; 祁春明; 张泽涵
Original assignee: Fengfan Co Ltd
Current assignee: Fengfan Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-05-02
Anticipated expiration: 2032-10-10

Abstract

The utility model provides a rapid detection device for resistance and voltage of a lithium ion battery shell, which belongs to the technical field of battery detection and comprises a tool frame body, a battery positioning mechanism and a detection mechanism, wherein the battery positioning mechanism and the detection mechanism are both arranged on the upper end face of the tool frame body, the battery positioning mechanism is positioned at the front side of the detection mechanism and used for clamping the battery shell, the detection mechanism comprises three conductive blocks, four probes and a lifting assembly, the three conductive blocks are abutted against the battery shell, two containing gaps for containing positive and negative lugs are respectively formed between the three conductive blocks, the four probes are arranged in the two containing gaps in pairs, and the lifting assembly is used for driving the four probes to lift so as to be respectively contacted with the positive and negative lugs in pairs. The rapid detection device for the resistance and the voltage of the lithium ion battery shell can realize synchronous detection of products and improve production efficiency.

Description

Quick detection device for resistance and voltage of lithium ion battery shell

Technical Field

The utility model belongs to the technical field of battery detection, and particularly relates to a rapid detection device for resistance and voltage of a lithium ion battery shell.

Background

In the production process of lithium ion soft package batteries, the shell corrosion phenomenon is easy to occur, so that the batteries bulge and deform, the batteries fail, and even safety problems such as explosion and the like can be caused.

One cause of corrosion of the battery is the generation of an electron channel in the cell, namely, an electronic short circuit between the aluminum layer of the packaging aluminum foil and the anode. The electronic short circuit must be that there is a conductor between the anode and the aluminum layer (PP break) that conducts electrons or that the anode is directly shorted to the aluminum layer by Ni-tab. In the packaging process of the battery cell, the edge sealing part is easy to break after being hot pressed and is contacted with the Ni-tab, so that an electronic path is generated. The other is that ion channels appear in the battery, namely, the packed aluminum foil layer and the anode are in ion short circuit. The structure of packing aluminium foil, inside is insulating PP, and one effect of PP is insulating, keeps apart electrolyte environment and aluminium layer, protects the aluminium layer, and the ion short circuit takes place because PP takes place to damage (tensile inhomogeneous when supposing to dash the Pocket) causes electrolyte infiltration to switch on aluminium layer and positive pole, consequently corrodes all to take place at the damaged position of PP.

Therefore, before the battery is formed into the BLOCK, the universal meter is used for detecting the shell resistance and the voltage of the battery, so that each single battery is ensured to be qualified, and the requirements are met. However, the method is low in efficiency, and the battery is easily scratched by a pen of the direct-held universal meter.

Disclosure of Invention

The utility model aims to provide a rapid detection device for the resistance and the voltage of a lithium ion battery shell, so that synchronous detection of products is realized, and the production efficiency is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a quick detection device of lithium ion battery shell resistance and voltage, including frock support body, battery positioning mechanism and detection mechanism, battery positioning mechanism with detection mechanism all installs the up end of frock support body, battery positioning mechanism is located detection mechanism's front side is used for the centre gripping battery case, detection mechanism includes three conducting block, four probes and lifting unit, and is three the conducting block supports and leans on the battery case, three form respectively between the conducting block and be used for holding the accommodation gap of anodal negative pole ear, four the probe pairwise sets up in two in accommodation gap, lifting unit is used for driving four the probe goes up and down in order to contact anodal negative pole ear two by two respectively.

In one possible implementation manner, the battery positioning mechanism comprises a supporting plate arranged on the upper end face of the tool frame body, and a left side clamping plate, a right side clamping plate and a front side clamping plate are respectively arranged on the supporting plate and used for clamping three sides of the battery shell.

In one possible implementation manner, an installation table is transversely arranged at the rear side of the upper end face of the tool frame body, three conductive blocks are installed at intervals at the front side of the installation table, and the lifting assembly is installed at the upper end of the installation table.

In one possible implementation manner, the lifting assembly is a telescopic cylinder, the telescopic cylinder is mounted at the upper end of the mounting table by means of a bracket, and four probes are mounted on piston rods at the lower sides of the telescopic cylinder.

In one possible implementation manner, a beam is arranged on a piston rod at the lower side of the telescopic cylinder, and four probes are symmetrically arranged at the left side and the right side of the beam.

In one possible implementation manner, two cushion blocks are respectively arranged on the front side of the mounting table, and the two cushion blocks are respectively arranged in the two accommodating gaps and used for respectively supporting the positive and negative lugs.

In one possible implementation manner, the front side of the mounting table is provided with a longitudinal slideway, the cushion block can slide along the longitudinal slideway, the front side of the mounting table is provided with a transverse slideway, and the conductive block can slide along the transverse slideway.

In one possible implementation manner, the tool frame body is provided with a start-stop button and an indicator lamp, and the start-stop button and the indicator lamp are electrically connected with the detection mechanism through a detection control circuit.

The lithium ion battery shell resistance and voltage rapid detection device provided by the utility model has the beneficial effects that: compared with the prior art, the battery positioning mechanism and the detection mechanism are both arranged on the upper end face of the tool frame body, and the battery positioning mechanism is positioned on the front side of the detection mechanism. The battery shell is clamped and fixed through the battery positioning mechanism, the three conductive blocks are abutted against the rear side of the battery shell at intervals, the positive and negative lugs of the battery respectively extend into the accommodating gaps between the two adjacent conductive blocks, and the lifting assembly drives the four probes to lift, so that the four probes respectively contact the positive and negative lugs in pairs. The three conductive blocks are electrically connected with the universal meter, and the four probes are electrically connected with the voltmeter, so that the resistance and the voltage of the battery shell are detected. The rapid detection device for the resistance and the voltage of the lithium ion battery shell can realize synchronous detection of products and improve production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a rapid detection device for resistance and voltage of a lithium ion battery shell according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a detection mechanism according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of the detection control circuit.

Reference numerals illustrate:

1. a tool frame body; 2. a support plate; 3. a left clamping plate; 4. a right clamping plate; 5. a front clamping plate; 6. a mounting table; 7. a bracket; 8. a telescopic cylinder; 9. a cross beam; 10. a conductive block; 11. a probe; 12. a cushion block; 13. a longitudinal slideway; 14. a transverse slideway; 15. a start-stop button; 16. an indicator light.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation words such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the specific scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 1 and 2, a rapid detection device for resistance and voltage of a lithium ion battery shell according to the present utility model will now be described. The utility model provides a quick detection device of lithium ion battery shell resistance and voltage, including frock support body 1, battery positioning mechanism and detection mechanism all install the up end at frock support body 1, battery positioning mechanism is located detection mechanism's front side and is used for centre gripping battery case, detection mechanism includes three conducting block 10, four probes 11 and lifting unit, three conducting block 10 supports and leans on the battery case, form respectively between the three conducting block 10 and be used for holding the accommodation gap of anodal negative pole ear, four probes 11 set up in two accommodation gaps in pairs, lifting unit is used for driving four probes 11 and goes up and down in order to contact anodal negative pole ear of two liang respectively.

Compared with the prior art, the rapid detection device for the resistance and the voltage of the lithium ion battery shell provided by the utility model has the advantages that the battery positioning mechanism and the detection mechanism are both arranged on the upper end surface of the tool frame body 1, and the battery positioning mechanism is positioned on the front side of the detection mechanism. The battery shell is clamped and fixed through the battery positioning mechanism, the three conductive blocks 10 are abutted against the rear side of the battery shell at intervals, the positive and negative lugs of the battery respectively extend into the accommodating gaps between the two adjacent conductive blocks 10, and the lifting assembly drives the four probes 11 to lift, so that the four probes 11 respectively contact the positive and negative lugs in pairs. Wherein, three conductive blocks 10 are electrically connected with a multimeter, and four probes 11 are electrically connected with a voltmeter, thereby detecting the resistance and voltage of the battery case. The rapid detection device for the resistance and the voltage of the lithium ion battery shell can realize synchronous detection of products and improve production efficiency.

Wherein, the conductive block 10 is a conductive silica gel block.

Referring to fig. 1 to 2, the battery positioning mechanism includes a support plate 2, the support plate 2 is mounted on an upper end surface of the tool frame 1 through a plurality of support rods to form a horizontal support surface, a left clamping plate 3, a right clamping plate 4 and a front clamping plate 5 are respectively disposed on the support plate 2, and the left clamping plate 3, the right clamping plate 4 and the front clamping plate 5 clamp three sides of the battery case from three directions, so that the battery case is kept stable.

Specifically, each clamping plate is provided with a strip hole, so that the left clamping plate 3 and the right clamping plate 4 can be adjusted in the left-right direction and positioned through bolts, and the battery shell is transversely clamped and fixed on the support plate 2. Also, the rear clamping plate can be adjusted in the front-rear direction to push the battery case forward, so that the front end of the battery case abuts against the three conductive blocks 10, and simultaneously, the positive and negative electrodes of the battery respectively extend into the accommodation gaps.

Referring to fig. 1 to 2, a mounting table 6 is transversely arranged at the rear side of the upper end face of the tool frame 1, the mounting table 6 is of a hollow box structure, and three conductive blocks 10 are mounted at intervals at the front side of the mounting table 6 through transverse slide ways 14 and can be transversely adjusted so as to adapt to batteries with different specifications, so that the three conductive blocks 10 respectively lean against two sides and the middle of the front end of a battery shell. The up end spiro union of mount table 6 has support 7, and lifting unit installs in the rear side of support 7, and lifting unit is flexible cylinder 8, and crossbeam 9 is installed to the piston rod of flexible cylinder 8 lower part, and two probes 11 are installed respectively to the both sides of crossbeam 9, and four probes 11 correspond the anodal ear and the negative pole ear of battery in pairwise respectively. The cushion blocks 12 are respectively arranged on the front side of the mounting table 6 through the longitudinal slide ways 13, the cushion blocks 12 can be adjusted through the longitudinal slide ways 13 to move in the height direction, positive and negative lugs of a battery are respectively lapped on the upper end faces of the cushion blocks 12, when the corresponding probes 11 are used for contacting the upper end faces of the corresponding lugs, the cushion blocks 12 can play a role in supporting the lugs, and the situation that the lugs are stressed to deform downwards when the probes 11 contact the lugs to influence detection results and even cause the lugs to be damaged is avoided.

In addition, the tool frame body 1 is provided with a start-stop button 15 and an indicator lamp 16, and the start-stop button 15 and the indicator lamp 16 are electrically connected with a detection mechanism through a detection control circuit. The tool frame body 1 is internally provided with a singlechip and a relay, and provides electric energy through an internal power supply or an external power supply.

Referring to fig. 3, the tool is controlled by a single chip microcomputer, and whether the battery is qualified or not is automatically judged according to detection data.

Detection principle: manually placing a battery into a battery positioning mechanism of a frame body, tightly contacting three conductive silica gel blocks of the battery shell, pressing a start-stop button 15, extending a telescopic cylinder 8, respectively contacting positive and negative lugs of the battery by a probe 11, firstly judging whether a loop contacted by an aluminum layer of the battery shell and the conductive silica gel blocks is conducted or not through a program controlled by a singlechip, and if the loop is not conducted, lighting an indicator lamp 16 in red, and manually transferring the battery to a disqualified area; if the battery is turned on, the indicator lamp 16 is turned on green, and the resistance of the battery case and the positive electrode and the resistance of the battery case and the negative electrode are detected, and the battery voltage is detected. And judging the battery according to the measured values of the universal meter and the voltmeter, if the battery is qualified, manually transferring to the next working procedure, and if the battery is unqualified, manually transferring the battery to an unqualified area.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a quick detection device of lithium ion battery shell resistance and voltage, its characterized in that includes frock support body (1), battery positioning mechanism and detection mechanism, battery positioning mechanism with detection mechanism all installs the up end of frock support body (1), battery positioning mechanism is located detection mechanism's front side is used for the centre gripping battery case, detection mechanism includes three conducting block (10), four probe (11) and lifting unit, three conducting block (10) support and lean on the battery case, three form respectively between conducting block (10) two be used for holding the accommodation gap of anodal negative pole ear, four probe (11) are two liang set up in two in the accommodation gap, lifting unit is used for driving four probe (11) go up and down in order to two liang of contact anodal negative pole ears respectively.

2. The rapid detection device for the resistance and the voltage of the lithium ion battery shell according to claim 1, wherein the battery positioning mechanism comprises a support plate (2) arranged on the upper end face of the tool frame body (1), a left side clamping plate (3), a right side clamping plate (4) and a front side clamping plate (5) are respectively arranged on the support plate (2), and the left side clamping plate (3), the right side clamping plate (4) and the front side clamping plate (5) are used for clamping three sides of the battery shell.

3. The rapid detection device for the resistance and the voltage of the lithium ion battery shell according to claim 1, wherein an installation table (6) is transversely arranged on the rear side of the upper end face of the tool frame body (1), three conductive blocks (10) are installed on the front side of the installation table (6) at intervals, and the lifting assembly is installed at the upper end of the installation table (6).

4. A rapid detection device for resistance and voltage of lithium ion battery shell according to claim 3, wherein the lifting component is a telescopic cylinder (8), the telescopic cylinder (8) is installed at the upper end of the installation table (6) by means of a bracket (7), and four probes (11) are installed on a piston rod at the lower side of the telescopic cylinder (8).

5. The rapid detection device for the resistance and the voltage of the lithium ion battery shell according to claim 4, wherein a cross beam (9) is arranged on a piston rod at the lower side of the telescopic cylinder (8), and four probes (11) are symmetrically arranged at the left side and the right side of the cross beam (9) in pairs.

6. A rapid detection device for resistance and voltage of lithium ion battery shell according to claim 3, wherein two cushion blocks (12) are respectively arranged at the front side of the mounting table (6), and the two cushion blocks (12) are respectively arranged in the two accommodation gaps for respectively supporting the positive and negative lugs.

7. The rapid detection device for the resistance and the voltage of the lithium ion battery shell according to claim 6, wherein a longitudinal slideway (13) is arranged on the front side of the installation table (6), the cushion block (12) can slide along the longitudinal slideway (13), a transverse slideway (14) is arranged on the front side of the installation table (6), and the conductive block (10) can slide along the transverse slideway (14).

8. A rapid detection device for resistance and voltage of lithium ion battery shell according to any one of claims 1-7, wherein a start-stop button (15) and an indicator lamp (16) are arranged on the tool frame body (1), and the start-stop button (15) and the indicator lamp (16) are electrically connected with the detection mechanism through a detection control circuit.