CN218956767U - A device for rapid detection of resistance and voltage of lithium-ion battery case - Google Patents

Abstract

The utility model provides a lithium-ion battery shell resistance and voltage rapid detection device, which belongs to the technical field of battery detection, and includes a tooling frame body, a battery positioning mechanism and a detection mechanism, and the battery positioning mechanism and the detection mechanism are installed on the The upper end surface of the tooling frame, the battery positioning mechanism is located on the front side of the detection mechanism for clamping the battery case, the detection mechanism includes three conductive blocks, four probes and lifting components, the three The conductive block leans against the battery case, two accommodating gaps are formed between the three conductive blocks for accommodating the positive and negative tabs, and the four probes are arranged in pairs of the two In the accommodation gap, the lifting assembly is used to drive the four probes up and down to contact the positive and negative tabs two by two. The utility model provides a lithium ion battery shell resistance and voltage rapid detection device, which can realize synchronous detection of products and improve production efficiency.

Description

A device for rapid detection of resistance and voltage of lithium-ion battery case

technical field

The utility model belongs to the technical field of battery detection, and more specifically relates to a rapid detection device for resistance and voltage of a lithium-ion battery case.

Background technique

In the production process of lithium-ion pouch batteries, shell corrosion is prone to occur, resulting in battery swelling and deformation, battery failure, and even explosion and other safety issues.

One reason for battery corrosion is the generation of electronic channels in the battery cell, that is, the 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 that can conduct electrons between the anode and the aluminum layer (where the PP is damaged), or the anode is directly short-circuited with the aluminum layer through Ni-tab to conduct electrons. During the packaging process of the battery cell, the edge sealing part is more likely to be damaged after being subjected to heat and pressure, and it is in contact with Ni-tab, thus creating an electronic path. The other is the appearance of ion channels in the battery, that is, an ion short circuit occurs between the aluminum layer of the packaging aluminum foil and the anode. The structure of the packaging aluminum foil is insulating PP inside. One of the functions of PP is insulation, which isolates the electrolyte environment from the aluminum layer and protects the aluminum layer. The ionic short circuit occurs because the PP is damaged (assuming that the stretching is uneven when punching the Pocket) resulting in electrolysis. Liquid penetration connects the aluminum layer to the anode, so corrosion occurs at the damaged part of PP.

Therefore, before the battery is composed of BLOCK, it is necessary to use a multimeter to test the shell resistance and voltage of the battery to ensure that each single battery is qualified and meets the requirements. However, this method is not only inefficient, but also directly holds the test leads of the multimeter to easily scratch the battery.

Utility model content

The purpose of the utility model is to provide a lithium-ion battery shell resistance and voltage rapid detection device to realize synchronous detection of products and improve production efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is: provide a lithium ion battery casing resistance and voltage rapid detection device, including a tooling frame, a battery positioning mechanism and a detection mechanism, the battery positioning mechanism and the detection mechanism Both are installed on the upper end surface of the tooling frame body, the battery positioning mechanism is located on the front side of the detection mechanism for clamping the battery case, and the detection mechanism includes three conductive blocks, four probes and a lifting assembly , the three conductive blocks lean against the battery case, two accommodating gaps are respectively formed between the three conductive blocks for accommodating the positive and negative tabs, and the four probes are arranged in pairs In the two accommodating gaps, the lifting assembly is used to drive the four probes up and down to contact the positive and negative tabs two by two.

In a possible implementation manner, the battery positioning mechanism includes a support plate arranged on the upper end surface of the tooling frame, and the support plate is respectively provided with a left clamping plate, a right clamping plate and a front clamping plate. The clamping plate, the left clamping plate, the right clamping plate and the front clamping plate are used to clamp three sides of the battery case.

In a possible implementation manner, a mounting platform is arranged laterally on the rear side of the upper end surface of the tooling frame body, and the three conductive blocks are installed at intervals on the front side of the mounting platform, and the lifting assembly is installed on the top of the mounting table.

In a possible implementation manner, the lifting assembly is a telescopic cylinder, the telescopic cylinder is installed on the upper end of the installation platform by means of a bracket, and the four probes are installed on the piston rod on the lower side of the telescopic cylinder. superior.

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

In a possible implementation manner, two pads are respectively provided on the front side of the mounting platform, and the two pads are respectively provided in the two receiving gaps for supporting positive and negative tabs respectively.

In a possible implementation manner, the front side of the installation platform is provided with a longitudinal slideway, the spacer can slide along the longitudinal slideway, the front side of the installation platform is provided with a transverse slideway, and the conductive Blocks are slidable along said transverse slides.

In a possible implementation manner, a start-stop button and an indicator light are provided on the tool frame, and the start-stop button and the indicator light are electrically connected to the detection mechanism through a detection control circuit.

The utility model provides a lithium-ion battery shell resistance and voltage rapid detection device has the beneficial effects that: compared with the prior art, the battery positioning mechanism and detection mechanism are installed on the upper end surface of the tooling frame, and the battery positioning mechanism is located at the detection front side of the mechanism. The battery case is clamped and fixed by the battery positioning mechanism, and the three conductive blocks are spaced against the rear side of the battery case, and the positive and negative tabs of the battery respectively extend into the accommodation gap between two adjacent conductive blocks, The lifting component drives the four probes up and down, so that the four probes contact the positive and negative tabs in pairs. Wherein, the three conductive blocks are electrically connected to the multimeter, and the four probes are electrically connected to the voltmeter, so as to detect the resistance and voltage of the battery case. The utility model provides a lithium ion battery case resistance and voltage rapid detection device, which can realize synchronous detection of products and improve production efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic structural diagram of a lithium-ion battery shell resistance and voltage rapid detection device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of the detection mechanism provided by the embodiment of the present invention;

Fig. 3 is the detection schematic diagram of the detection control circuit.

Explanation of reference signs:

1. Tooling frame body; 2. Support plate; 3. Left clamping plate; 4. Right clamping plate; 5. Front clamping plate; 6. Installation platform; 7. Bracket; 8. Telescopic cylinder; 9 , beam; 10, conductive block; 11, probe; 12, pad; 13, longitudinal slideway; 14, horizontal slideway; 15, start-stop button; 16, indicator light.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, such as the use of the terms "first", "second" or "third", etc., are for the purpose of distinguishing different objects, rather than using to describe a specific order.

In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation words, such as using the terms "center", "horizontal", "longitudinal", "horizontal", "vertical", "top ", "Bottom", "Inner", "Outer", "Up", "Down", "Front", "Back", "Left", "Right", "Clockwise", "Counterclockwise", "High ", "low" and other indication orientations or positional relationships are based on the orientations and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific Orientation or construction and operation in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

In the claims, description and above-mentioned drawings of the utility model, unless otherwise clearly defined, if the term "fixed" or "fixed connection" is used, it should be understood in a broad sense, that is, there is no displacement relationship and relative rotation between the two. Any way of connection, that is to say, includes non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

In the claims, description and above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, it is intended to mean "including but not limited to".

Referring to Fig. 1 and Fig. 2, a quick detection device for resistance and voltage of a lithium-ion battery shell provided by the utility model is now described. A lithium-ion battery casing resistance and voltage rapid detection device, including a tooling frame body 1, a battery positioning mechanism and a detection mechanism, the battery positioning mechanism and the detection mechanism are installed on the upper end surface of the tooling frame body 1, and the battery positioning mechanism is located at the side of the detection mechanism The front side is used to clamp the battery case. The detection mechanism includes three conductive blocks 10, four probes 11 and a lifting assembly. The three conductive blocks 10 are against the battery case, and the three conductive blocks 10 are respectively formed There are two accommodating gaps for accommodating the positive and negative tabs. Four probes 11 are arranged in the two accommodating gaps in pairs. The lifting assembly is used to drive the four probes 11 up and down to contact the positive and negative tabs in pairs.

The utility model provides a lithium-ion battery shell resistance and voltage rapid detection device, compared with the prior art, the battery positioning mechanism and detection mechanism are installed on the upper end surface of the tooling frame body 1, and the battery positioning mechanism is located in front of the detection mechanism side. The battery case is clamped and fixed by the battery positioning mechanism, and the three conductive blocks 10 are spaced against the rear side of the battery case, and the positive and negative tabs of the battery extend to the accommodation gap between two adjacent conductive blocks 10 Among them, the lifting component drives the four probes 11 to lift up and down, so that the four probes 11 contact the positive and negative tabs in pairs. Wherein, three conductive blocks 10 are electrically connected to a multimeter, and four probes 11 are electrically connected to a voltmeter, so as to detect the resistance and voltage of the battery case. The utility model provides a lithium ion battery case resistance and voltage rapid detection device, which can realize synchronous detection of products and improve production efficiency.

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

Please refer to Figure 1 to Figure 2, the battery positioning mechanism includes a support plate 2, the support plate 2 is installed on the upper end surface of the tooling frame body 1 through a plurality of support rods to form a horizontal support surface, and the left side clips are respectively arranged on the support plate 2 The holding plate 3, the right holding plate 4 and the front holding plate 5, the left holding plate 3, the right holding plate 4 and the front holding plate 5 hold the three parts of the battery case from three directions. side to keep the battery case stable.

Specifically, each clamping plate is provided with a long hole, so that the left clamping plate 3 and the right clamping plate 4 can be adjusted in the left and right directions and positioned by bolts, so that the battery case can be clamped and fixed in the horizontal direction. on the support plate 2. Similarly, the front and rear direction of the rear side clamping plate can be adjusted to push the battery case forward, so that the front end of the battery case is against the three conductive blocks 10, and at the same time, the positive and negative electrodes of the battery extend into the accommodation gap respectively. .

Please refer to Fig. 1 to Fig. 2, the rear side of the upper end surface of the tooling frame body 1 is provided with an installation platform 6 horizontally, the installation platform 6 is a hollow box structure, and three conductive blocks 10 are installed on the installation platform 6 at intervals through the transverse slideway 14 The front side of the battery case can be adjusted horizontally to adapt to batteries of different specifications, so that the three conductive blocks 10 respectively abut against the two sides and the middle of the front end of the battery case. The upper end surface of the mounting table 6 is screwed with a support 7, and the lifting assembly is installed on the rear side of the support 7. The lifting assembly is a telescopic cylinder 8, and the piston rod at the bottom of the telescopic cylinder 8 is equipped with a crossbeam 9. There are three probes 11 and four probes 11 corresponding to the positive pole ear and the negative pole ear of the battery respectively. The front side of the mounting table 6 is respectively equipped with pads 12 through the longitudinal slides 13, the pads 12 can move in the height direction through the longitudinal slides 13, and the pads 12 can be adjusted so that the positive and negative tabs of the battery are overlapped respectively. The upper end surface of the spacer 12, when the corresponding probe 11 is used to contact the upper end surface of the corresponding tab, the spacer 12 can play a role in supporting the tab, so as to avoid the force on the tab when the probe 11 contacts the tab. The lower deformation will affect the test results and even cause damage to the tabs.

In addition, the tool frame body 1 is provided with a start-stop button 15 and an indicator light 16, and the start-stop button 15 and the indicator light 16 are electrically connected to the detection mechanism through a detection control circuit. The tooling frame body 1 has a built-in single-chip microcomputer and a relay, and provides electric energy through a built-in power supply or an external power supply.

Referring to Figure 3, the tooling is controlled by a single-chip microcomputer, which automatically judges whether the battery is qualified or not according to the test data.

Detection principle: Manually put the battery in the battery positioning mechanism of the frame body, the three conductive silica gel blocks of the battery case are in close contact, press the start and stop button 15, the telescopic cylinder 8 is stretched out, and the probe 11 touches the positive and negative electrodes of the battery respectively Ear, first judge whether the circuit in which the aluminum layer of the battery shell contacts the conductive silica gel block is conducting through the program controlled by the single-chip microcomputer. If it is not conducting, the indicator light 16 is bright red, and the battery is directly transferred to the unqualified area manually; If it is turned on, the indicator light 16 will be green, and the resistance between the battery shell and the positive pole and the shell and the negative pole will be detected, and the battery voltage will be detected simultaneously. The battery is judged according to the values measured by the multimeter and voltmeter. If it is qualified, it will be manually transferred to the next process. If it is unqualified, the battery will be manually transferred to the unqualified area.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

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.

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