Battery cell tab short circuit testing device

Abstract

The utility model provides a kind of electric core tab short circuit testing device, including electric core conveying mechanism, tab positioning mechanism and short circuit testing mechanism;The electric core conveying mechanism can be used to realize the transmission of the electric core, realize the stable movement of the electric core between different stations;The tab positioning mechanism can drive the electric core to rotate along the axis, so that the positive tab, negative tab is located on the set test orientation A, test orientation B respectively;The short circuit testing mechanism is respectively provided with positive tab probe, negative tab probe on the test orientation A, test orientation B, when the electric core of positioning completion is stably moved to the short circuit testing mechanism by the electric core conveying mechanism, the positive tab probe, negative tab probe is respectively contacted with the positive tab, negative tab, detects whether the positive tab and negative tab are short-circuited;So it can be first to the tab of the electric core Precise positioning is carried out short circuit test again, improve the reliability of test.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery cell tab short-circuit testing device. Background Technology

[0002] With continuous technological advancements, battery cells, as energy storage units, are playing an increasingly important role in modern society. From portable electronic devices such as smartphones and laptops to new energy vehicles and large-scale energy storage systems, the application scope of battery cells is constantly expanding. Especially in the past decade, with the advancement of lithium-ion battery technology and its cost reduction, market demand has exploded. This widespread application has not only driven innovation in battery cell manufacturing processes but also placed higher demands on the safety and reliability of battery cells. Against this backdrop, ensuring that every battery cell can operate safely and stably has become a crucial issue in the field of battery manufacturing technology.

[0003] In the battery manufacturing process, cell tab short-circuit testing is a crucial step in ensuring battery safety and reliability. Generally, this step is performed using a cell tab short-circuit testing device after the cell winding process. In a normal cell structure, the positive and negative tabs are electrically isolated by a separator, which should have a high insulation resistance. Therefore, by applying a certain voltage or current to the positive and negative tabs of the cell using a cell tab short-circuit testing device and monitoring the change in resistance, it is possible to determine whether there is abnormal conduction (i.e., a short circuit) between the positive and negative tabs. This allows for the screening out of cells with tab short-circuit problems, preventing them from entering the market and causing safety hazards.

[0004] However, in the existing technology, most of the battery cell tab short-circuit testing devices currently used only have basic feeding and testing functions. They cannot accurately locate the position of the battery cell tab, which makes it impossible for testing probes and other testing components to accurately contact the designated testing position. This leads to deviations in test results, affects the reliability of the test, and thus affects the overall safety and reliability of battery products, which is not conducive to the consistent control of product quality. Utility Model Content

[0005] This invention provides a short-circuit testing device for battery cell tabs, which can accurately locate the battery cell tabs before performing short-circuit tests, improving test reliability and product quality. The specific solution is as follows:

[0006] A battery cell tab short-circuit testing device is used for short-circuit testing of battery cell tabs, wherein the positive tab and negative tab of the battery cell are located on the same end face of the battery cell, and the included angle between the positive tab and negative tab and the battery cell axis is α, and the device includes a battery cell conveying mechanism, a tab positioning mechanism and a short-circuit testing mechanism.

[0007] The battery cell conveying mechanism can be used to realize the transmission of the battery cells and to achieve stable movement of the battery cells between different workstations;

[0008] The electrode positioning mechanism can drive the battery cell to rotate along the axis, so that the positive electrode and the negative electrode are respectively located at the set test orientation A and test orientation B;

[0009] The short-circuit testing mechanism is equipped with a positive tab probe and a negative tab probe at test position A and test position B, respectively. When the battery cell that has been positioned is stably moved to the short-circuit testing mechanism through the battery cell conveying mechanism, the positive tab probe and the negative tab probe contact the positive tab and the negative tab, respectively, to detect whether there is a short circuit between the positive tab and the negative tab.

[0010] Furthermore, the electrode positioning mechanism includes a clamping component, a rotating component, and a detection component, and the clamping component, the rotating component, and the detection component are electrically connected to each other; the clamping component can be used to clamp the battery cell; the rotating component can be used to drive the battery cell located on the clamping component to rotate along the axis; the detection component can be used to detect whether there is an electrode at the test orientation A and / or the test orientation B.

[0011] Furthermore, the electrode positioning mechanism also includes a first lifting component, which can drive the clamping component to move up and down.

[0012] Furthermore, the clamping assembly includes a first roller, a second roller, a third roller, and a clamping cylinder; when the battery cell is laid flat, the first roller and the second roller are located on the left and right sides of the side of the battery cell, respectively, and the third roller is located on the top of the side of the battery cell; the clamping cylinder is connected to the first roller, the second roller, and the third roller, and can drive the first roller, the second roller, and the third roller to move closer or further away from each other, so as to clamp or release the battery cell.

[0013] Furthermore, the first roller, the second roller, and the third roller are evenly distributed along the circumferential direction of the battery cell.

[0014] Furthermore, the rotating component is a rotary motor that can drive the third roller to rotate along the axis, and the first roller and the second roller can rotate synchronously along the axis of the battery cell.

[0015] Furthermore, the detection component includes a tab detection through-beam optical fiber and an optical fiber extension cylinder; the tab detection through-beam optical fiber can detect whether there are tabs at the test orientation A and / or test orientation B; the optical fiber extension cylinder can drive the tab detection through-beam optical fiber to move closer to or away from the battery cell along the axial direction of the battery cell.

[0016] Furthermore, the battery cell conveying mechanism includes a conveyor belt and at least one battery cell carrier; the battery cell carrier is disposed on the conveyor belt, can stably carry the battery cell, and can move stably between different workstations under the drive of the conveyor belt.

[0017] Furthermore, the top of the cell carrier is provided with a V-shaped groove that adapts to the side of the cell, which can be used to stably support the cell.

[0018] Furthermore, the short-circuit test mechanism also includes a second lifting component, which can drive the positive electrode probe and the negative electrode probe to move up and down.

[0019] The battery cell tab short-circuit testing device provided by this utility model, through the cooperation between the battery cell conveying mechanism, the tab positioning mechanism and the short-circuit testing mechanism, can first accurately position the tab of the battery cell before performing the short-circuit test. Compared with the prior art, it can reduce the probability of test result deviation, improve the reliability of the test, thereby improving the overall safety and reliability of battery products and facilitating the consistent control of product quality.

[0020] In some embodiments, the electrode positioning mechanism includes a clamping component, a rotating component, and a detection component, and the clamping component, the rotating component, and the detection component are electrically connected. After the clamping component clamps the battery cell, it sends a feedback signal to the rotating component. Then, the rotating component drives the battery cell located on the clamping component to rotate along the axis. The detection component detects and sends a feedback signal to the rotating component, so that the positive electrode and the negative electrode are located at the set test orientation A and test orientation B, respectively. This can achieve accurate positioning of the positive electrode and the negative electrode, resulting in better positioning effect and further improving the reliability of the test.

[0021] In some embodiments, by setting the first lifting component to drive the clamping component to move up and down, when it is necessary to drive the battery cell located on the clamping component to rotate along the axis by the rotating component, the clamping component can be driven to rise up by the first lifting component and leave the battery cell conveying mechanism, thereby avoiding wear or scratches on the appearance of the battery cell caused by the battery cell conveying mechanism during rotation; when the positioning is completed and no further rotation is needed, the clamping component is driven to fall down by the first lifting component and return to the battery cell conveying mechanism.

[0022] In some embodiments, the clamping assembly includes a first roller, a second roller, a third roller, and a clamping cylinder; the clamping of the battery cell is achieved through the cooperation of the first roller, the second roller, the third roller, and the clamping cylinder. The three-point clamping structure makes the clamping force distribution more uniform, which not only improves the clamping effect and makes it more stable and reliable, but also makes it less likely to damage the appearance of the battery cell, thus improving the quality of the battery cell.

[0023] In some embodiments, the first roller, the second roller, and the third roller are evenly distributed along the circumferential direction of the battery cell, which can further improve the clamping effect of the clamping assembly and make it more stable and reliable.

[0024] In some embodiments, the rotating component is a rotary motor that can drive the third roller to rotate along the axis, and the first roller and the second roller can rotate synchronously along the axis of the battery cell. Thus, by driving the third roller to rotate axially, the battery cell can also be driven to rotate axially, achieving smooth rotation of the battery cell in the clamping state, reducing the relative sliding friction between the roller and the battery cell, preventing problems such as scratches on the battery cell shell or coating peeling caused by friction, and improving product yield.

[0025] In some embodiments, the detection component includes a tab detection optical fiber and an optical fiber extension cylinder. The tab can be detected by the tab detection optical fiber. The optical fiber extension cylinder drives the tab detection optical fiber to move closer to or away from the battery cell along the axial direction of the battery cell, which can avoid interference of the tab detection optical fiber with the battery cell during non-detection times and thus avoid affecting the movement of the battery cell.

[0026] In some embodiments, the cell conveying mechanism includes a conveyor belt and at least one cell carrier; through the cooperation between the conveyor belt and the cell carrier, the cell can be transmitted stably and reliably, enabling the cell to move stably between different workstations and achieving better transmission performance.

[0027] In some embodiments, by providing a V-groove on the top of the cell carrier that adapts to the side of the cell, the cell can be stably and reliably supported, resulting in better fixation and adaptability.

[0028] In some embodiments, the short-circuit testing mechanism further includes a second lifting component. By setting the second lifting component to drive the positive tab probe and the negative tab probe to move up and down, it is possible to control that when the battery cell reaches the short-circuit testing station, the positive tab probe and the negative tab probe are driven to descend and approach the battery cell to contact the positive tab and the negative tab for short-circuit testing. After the test is completed, the positive tab probe and the negative tab probe are driven to rise and move away from the battery cell, so as to avoid interference with the battery cell and affect the movement of the battery cell. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a short-circuit test on the battery cell tabs.

[0030] Figure 2 This is a schematic diagram of the battery cell tab short-circuit test device.

[0031] Figure 3 Schematic diagram of the electrode positioning mechanism Figure 1 .

[0032] Figure 4 Schematic diagram of the electrode positioning mechanism Figure 2 .

[0033] Figure 5 Schematic diagram of the electrode positioning mechanism Figure 3 .

[0034] Figure 6 Schematic diagram of the short-circuit testing mechanism Figure 1 .

[0035] Figure 7 Schematic diagram of the short-circuit testing mechanism Figure 2 .

[0036] The attached diagram is labeled as follows: 1 is the battery cell, 11 is the positive tab, 12 is the negative tab, 2 is the battery cell conveying mechanism, 21 is the conveyor belt, 22 is the battery cell carrier, 3 is the tab positioning mechanism, 31 is the clamping assembly, 311 is the first roller, 312 is the second roller, 313 is the third roller, 314 is the clamping cylinder, 32 is the rotating assembly, 33 is the detection assembly, 331 is the tab detection optical fiber, 332 is the optical fiber extension cylinder, 34 is the first lifting assembly, 4 is the short circuit testing mechanism, 41 is the positive tab probe, 42 is the negative tab probe, and 43 is the second lifting assembly. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. For ease of explanation, the terms "front," "rear," "positive," "negative," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," and "inner" in this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model or limitations on the actual orientation of the product or device during production, use, sales, etc. In addition, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "composition," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] This utility model provides a battery cell tab short-circuit testing device, which can be used to perform short-circuit testing on the tabs of battery cell 1. It allows for precise positioning of the tabs of battery cell 1 before short-circuit testing, thereby improving test reliability and product quality. In this embodiment, as... Figure 1 As shown, the battery cell 1 is a cylindrical battery cell. The cylindrical outer surface of the main body of the battery cell 1 (i.e., the side surface extending from one end of the battery cell 1 to the other end) is the side surface of the battery cell 1. The planar portions at both ends of the battery cell 1 are the end faces of the battery cell 1, and the end faces are perpendicular to the side surfaces. The positive electrode 11 and the negative electrode 12 of the battery cell 1 are located on the end face of the same end of the battery cell 1, and the angle between the positive electrode 11 and the negative electrode 12 relative to the axis of the battery cell 1 is α. In this embodiment, α is 90°, but in practical applications, α can also be other angle values, which are not limited here. In this embodiment, as shown... Figure 1 As shown, the positive tab 11 is located on the left side of the end face of the battery cell 1, and the negative tab 12 is located on the right side of the end face of the battery cell 1, in a left-right distribution. In practical applications, the positive tab 11 and the negative tab 12 can be distributed in a right-left distribution or other distribution patterns on the same end face of the battery cell 1, which is not limited here. Of course, in addition to the battery cell 1 with the above structure, the tab short-circuit test of other similar battery cells 1 can also be applied, which is not limited here.

[0039] like Figure 2The diagram shown is a structural schematic of the battery cell tab short-circuit testing device. Specifically, the battery cell tab short-circuit testing device includes a battery cell conveying mechanism 2, a tab positioning mechanism 3, and a short-circuit testing mechanism 4, wherein:

[0040] The cell conveying mechanism 2 can be used for the transmission of the cell 1, realizing the stable movement of the cell 1 between different workstations. For example, in this embodiment, the cell conveying mechanism 2 can realize the sequential transmission of the cell 1 between workstations such as the cell loading workstation, the tab positioning workstation, the short circuit test workstation, and the cell unloading workstation.

[0041] The electrode positioning mechanism 3 is disposed on the electrode positioning station. It can drive the battery cell 1 to rotate along the axis so that the positive electrode 11 and the negative electrode 12 are respectively located at the set test orientation A and test orientation B, as shown in the figure below. Figure 1 As shown in the figure; the set test orientation A and test orientation B should be adapted to the probe position in the short circuit test mechanism 4; the driving of the battery cell 1 to rotate along the axis can be achieved by contacting the end face of the battery cell 1 or by contacting the side of the battery cell 1, and there is no limitation here;

[0042] The short-circuit testing mechanism 4 is installed on the short-circuit testing station, and as follows: Figure 1 As shown, the short-circuit testing mechanism 4 is provided with a positive tab probe 41 and a negative tab probe 42 at the test positions A and B, respectively. When the battery cell 1, after being positioned, is stably moved from the tab positioning station to the short-circuit testing station by the battery cell conveying mechanism 2, the positive tab probe 41 and the negative tab probe 42 contact the positive tab 11 and the negative tab 12 for charging, respectively, to detect whether there is a short circuit between the positive tab 11 and the negative tab 12.

[0043] In use, the battery cell 1 is first transferred from the battery cell loading station to the tab positioning station via the battery cell conveying mechanism 2. Then, the battery cell 1 is driven to rotate along the axis via the tab positioning mechanism 3, so that the positive tab 11 and the negative tab 12 are respectively located at the set test orientation A and test orientation B, thus completing the tab positioning of the battery cell 1. Then, the battery cell 1 is transferred from the tab positioning station to the short circuit test station via the battery cell conveying mechanism 2. The positive tab probe 41 and the negative tab probe 42 contact the positive tab 11 and the negative tab 12 respectively for charging, thereby detecting whether there is a short circuit between the positive tab 11 and the negative tab 12, thus completing the short circuit test.

[0044] The cell tab short-circuit testing device with the above structure, through the cooperation between the cell conveying mechanism 2, the tab positioning mechanism 3 and the short-circuit testing mechanism 4, can first accurately position the tab of the cell 1 before performing the short-circuit test. Compared with the prior art, it can reduce the probability of test result deviation, improve the reliability of the test, thereby improving the overall safety and reliability of the battery product and facilitating the consistent control of product quality.

[0045] In some embodiments, such as Figure 3 As shown, the electrode positioning mechanism 3 includes a clamping assembly 31, a rotating assembly 32, and a detection assembly 33, and the clamping assembly 31, the rotating assembly 32, and the detection assembly 33 are electrically connected. The clamping assembly 31 can be used to clamp the battery cell 1. Specifically, it can clamp the battery cell 1 by contacting its end face or by contacting its side, without limitation. The rotating assembly 32 can be used to drive the battery cell 1 located on the clamping assembly 31 to rotate along its axis. Specifically, it can drive the battery cell 1 by directly contacting it. The battery cell 1 can rotate along the axis, or it can be driven to rotate along the axis by indirect contact with the battery cell 1 (for example, by driving the clamping assembly 31 to rotate along the axis, etc.), which is not limited here; the detection assembly 33 can be used to detect whether there are tabs on the test orientation A and / or test orientation B. Specifically, if the rotating assembly 32 drives the battery cell 1 to rotate clockwise along the axis, the detection assembly 33 can be used to detect whether there are tabs on the test orientation A. When a tab is detected on the test orientation A (at this time, what is detected is the battery cell 1), the detection assembly 33 can detect whether there are tabs on the test orientation A. The negative electrode tab 12 is fed back to the rotating component 32, which then drives the battery cell 1 to rotate clockwise by α along the axis, so that the positive electrode tab 11 and the negative electrode tab 12 are respectively located at the set test orientation A and test orientation B. If the rotating component 32 drives the battery cell 1 to rotate counterclockwise along the axis, the detection component 33 can be used to detect whether there is a tab at the test orientation B. When a tab is detected at the test orientation B (at this time, the positive electrode tab 11 is detected), a feedback signal is sent to the rotating component 32, which then drives the battery cell 1 to rotate clockwise by α. After the battery cell 1 rotates counterclockwise by α along the axis, the positive electrode 11 and the negative electrode 12 will be located at the set test orientation A and test orientation B, respectively. Of course, the detection component 33 can also be used to detect whether there are electrodes at test orientation A and test orientation B at the same time. That is, detection points are set at both test orientation A and test orientation B. When electrodes are detected at both test orientation A and test orientation B, a feedback signal is sent to the rotating component 32 to stop the rotation, so that the positive electrode 11 and the negative electrode 12 are located at the set test orientation A and test orientation B, respectively.

[0046] The battery cell tab short-circuit testing device with the above structure clamps the battery cell 1 with the clamping component 31 and then sends a feedback signal to the rotating component 32. The rotating component 32 then drives the battery cell 1 located on the clamping component 31 to rotate along the axis. The detection component 33 detects and sends a feedback signal to the rotating component 32, ultimately positioning the positive tab 11 and the negative tab 12 at the set test orientation A and test orientation B, respectively. This allows for precise positioning of the positive tab 11 and the negative tab 12, resulting in better positioning and further improving the reliability of the test.

[0047] In some embodiments, such as Figure 3 As shown, the electrode positioning mechanism 3 also includes a first lifting component 34, which can drive the clamping component 31 to move up and down; as a preferred embodiment, the first lifting component 34 drives the clamping component 31 to rise to a height of about one millimeter, which is more effective.

[0048] The battery cell tab short-circuit testing device with the above structure uses the first lifting component 34 to drive the clamping component 31 to move up and down. When it is necessary to drive the battery cell 1 located on the clamping component 31 to rotate along the axis by the rotating component 32, the first lifting component 34 can first drive the clamping component 31 to rise up and leave the battery cell conveying mechanism 2, thereby avoiding wear or scratches on the appearance of the battery cell 1 caused by the battery cell conveying mechanism 2 during rotation. After positioning is completed and no further rotation is needed, the first lifting component 34 drives the clamping component 31 to fall down and return to the battery cell conveying mechanism 2. In addition, the height to which the first lifting component 34 drives the clamping component 31 to rise is about one millimeter, which can avoid the battery cell 1 from rotating during the fall and affecting the positioning effect of the battery cell 1.

[0049] In some embodiments, such as Figure 4 , Figure 5 As shown, the clamping assembly 31 includes a first roller 311, a second roller 312, a third roller 313, and a clamping cylinder 314; when the battery cell 1 is as shown... Figure 4 , Figure 5When the battery cell is laid flat as shown, the first roller 311 and the second roller 312 are located on the left and right sides of the side of the battery cell 1, respectively, and the third roller 313 is located on the top of the side of the battery cell 1. The clamping cylinder 314 is connected to the first roller 311, the second roller 312, and the third roller 313, and can drive the first roller 311, the second roller 312, and the third roller 313 to move closer or further away from each other. When they move closer, the three rollers press against the side of the battery cell 1 to clamp the battery cell 1. When they move further away, the three rollers leave the side of the battery cell 1 to release the battery cell 1.

[0050] The battery cell tab short-circuit testing device with the above structure clamps the battery cell 1 through the cooperation of the first roller 311, the second roller 312, the third roller 313 and the clamping cylinder 314. The three-point clamping structure makes the clamping force distribution more uniform, which not only makes the clamping effect better and more stable and reliable, but also makes it less likely to damage the appearance of the battery cell 1, which is conducive to improving the quality of the battery cell 1.

[0051] In some embodiments, the first roller 311, the second roller 312, and the third roller 313 are evenly distributed along the circumferential direction of the battery cell 1, that is, the first roller 311, the second roller 312, and the third roller 313 are located on the left and right sides and the top of the side of the battery cell 1, respectively, and are distributed at equal intervals of 120° around the axis of the battery cell 1.

[0052] The battery cell tab short-circuit test device with the above structure has the first roller 311, the second roller 312, and the third roller 313 evenly distributed along the circumferential direction of the battery cell 1, which can further improve the clamping effect of the clamping assembly 31 and make it more stable and reliable.

[0053] In some embodiments, the rotating component 32 is a rotary motor that can drive the third roller 313 to rotate along the axis, and the first roller 311 and the second roller 312 can rotate synchronously along the axis of the battery cell 1.

[0054] The battery cell tab short-circuit testing device with the above structure can drive the third roller 313 to rotate axially by the rotating component 32, which in turn drives the battery cell 1 to rotate axially. At the same time, the first roller 311 and the second roller 312, as driven rollers, can also rotate axially synchronously with the battery cell 1. This enables the battery cell 1 to rotate smoothly in the clamping state, reduces the relative sliding friction between the rollers and the battery cell 1, prevents scratches on the battery cell 1 shell or coating peeling caused by friction, and improves product yield.

[0055] In some embodiments, such as Figure 5As shown, the detection component 33 includes a tab detection through-beam fiber 331 and a fiber extension cylinder 332. The tab detection through-beam fiber 331 can detect whether there are tabs on the test orientation A and / or test orientation B. Specifically, the tab detection through-beam fiber 331 can be used to detect whether there are tabs on the test orientation A, or it can also be used to detect whether there are tabs on the test orientation B, or it can also be used to detect whether there are tabs on both the test orientation A and the test orientation B at the same time, that is, detection points are set on both the test orientation A and the test orientation B. The fiber extension cylinder 332 can drive the tab detection through-beam fiber 331 to move closer to or away from the battery cell 1 along the axial direction of the battery cell 1.

[0056] The battery cell tab short-circuit testing device with the above structure includes a detection component 33 comprising a tab detection through-beam fiber 331 and a fiber extension cylinder 332. The tab can be detected by the tab detection through-beam fiber 331. The fiber extension cylinder 332 drives the tab detection through-beam fiber 331 to move closer to or away from the battery cell 1 along the axial direction of the battery cell 1, which can avoid interference of the tab detection through-beam fiber 331 with the battery cell 1 during non-detection times, thus avoiding affecting the movement of the battery cell 1.

[0057] In some embodiments, such as Figure 2 As shown, the battery cell conveying mechanism 2 includes a conveyor belt 21 and at least one battery cell carrier 22; the battery cell carrier 22 is disposed on the conveyor belt 21, can stably carry the battery cell 1, and can move stably between different workstations under the drive of the conveyor belt 21; preferably, the number of battery cell carriers 22 is two or more, and the battery cell carriers 22 are disposed at equal intervals on the conveyor belt 21 along the conveying direction of the conveyor belt 21.

[0058] The battery cell tab short-circuit testing device with the above structure can stably and reliably realize the transmission of the battery cell 1 through the cooperation between the conveyor belt 21 and the battery cell carrier 22, and realize the stable movement of the battery cell 1 between different workstations, resulting in better transmission effect.

[0059] In some embodiments, the top of the cell carrier 22 is provided with a V-shaped groove adapted to the side of the cell 1, which can be used to stably support the cell 1.

[0060] The battery cell tab short-circuit test device with the above structure can stably and reliably support the battery cell 1 by setting a V-shaped groove on the top of the battery cell carrier 22 that is adapted to the side of the battery cell 1, with better fixation effect and better adaptability.

[0061] In some embodiments, such as Figure 6 , Figure 7As shown, the short-circuit test mechanism 4 also includes a second lifting component 43, which can drive the positive electrode probe 41 and the negative electrode probe 42 to move up and down.

[0062] The battery cell tab short-circuit testing device with the above structure, by setting the second lifting component 43 to drive the positive tab probe 41 and negative tab probe 42 to move up and down, can control the positive tab probe 41 and negative tab probe 42 to descend and approach the battery cell 1 after the battery cell 1 reaches the short-circuit test position, and contact the positive tab 11 and negative tab 12 to perform short-circuit testing. After the test is completed, the positive tab probe 41 and negative tab probe 42 are driven to rise and move away from the battery cell 1, so as to avoid interference with the battery cell 1 and affect the movement of the battery cell 1.

[0063] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes made in accordance with the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A battery cell tab short-circuit testing device for testing the tabs of a battery cell (1), wherein the positive tab (11) and negative tab (12) of the battery cell (1) are located on the same end face of the battery cell (1), and the included angle between the positive tab (11) and the negative tab (12) relative to the axis of the battery cell (1) is α, characterized in that, It includes a cell delivery mechanism (2), an electrode positioning mechanism (3), and a short-circuit testing mechanism (4); The battery cell conveying mechanism (2) can be used to realize the transmission of the battery cell (1) and realize the stable movement of the battery cell (1) between different work stations; The electrode positioning mechanism (3) can drive the battery cell (1) to rotate along the axis, so that the positive electrode (11) and the negative electrode (12) are respectively located at the set test orientation A and test orientation B; The short-circuit testing mechanism (4) is provided with a positive tab probe (41) and a negative tab probe (42) at the test orientation A and test orientation B, respectively. When the battery cell (1) after positioning is stably moved to the short-circuit testing mechanism (4) through the battery cell transport mechanism (2), the positive tab probe (41) and the negative tab probe (42) contact the positive tab (11) and the negative tab (12) respectively to detect whether there is a short circuit between the positive tab (11) and the negative tab (12).

2. The cell tab short-circuit testing device according to claim 1, characterized in that, The electrode positioning mechanism (3) includes a clamping component (31), a rotating component (32), and a detection component (33), and the clamping component (31), the rotating component (32), and the detection component (33) are electrically connected; the clamping component (31) can be used to clamp the battery cell (1); the rotating component (32) can be used to drive the battery cell (1) located on the clamping component (31) to rotate along the axis; the detection component (33) can be used to detect whether there is an electrode at the test orientation A and / or the test orientation B.

3. The cell tab short-circuit testing device according to claim 2, characterized in that, The electrode positioning mechanism (3) further includes a first lifting component (34), which can drive the clamping component (31) to move up and down.

4. The cell tab short-circuit testing device according to claim 2, characterized in that, The clamping assembly (31) includes a first roller (311), a second roller (312), a third roller (313), and a clamping cylinder (314). When the battery cell (1) is laid flat, the first roller (311) and the second roller (312) are located on the left and right sides of the side of the battery cell (1), respectively, and the third roller (313) is located on the top of the side of the battery cell (1). The clamping cylinder (314) is connected to the first roller (311), the second roller (312), and the third roller (313), and can drive the first roller (311), the second roller (312), and the third roller (313) to move closer or further away from each other, so as to clamp or release the battery cell (1).

5. The cell tab short-circuit testing device according to claim 4, characterized in that, The first roller (311), the second roller (312), and the third roller (313) are evenly distributed along the circumferential direction of the battery cell (1).

6. The cell tab short-circuit testing device according to claim 4, characterized in that, The rotating component (32) is a rotary motor that can drive the third roller (313) to rotate along the axis, and the first roller (311) and the second roller (312) can rotate synchronously along the axis of the battery cell (1).

7. The cell tab short-circuit testing device according to claim 2, characterized in that, The detection component (33) includes a tab detection through-beam fiber (331) and a fiber extension cylinder (332); the tab detection through-beam fiber (331) can detect whether there is a tab on the test orientation A and / or test orientation B; the fiber extension cylinder (332) can drive the tab detection through-beam fiber (331) to move closer to or away from the battery cell (1) along the axial direction of the battery cell (1).

8. The cell tab short-circuit testing device according to any one of claims 1 to 7, characterized in that, The cell conveying mechanism (2) includes a conveyor belt (21) and at least one cell carrier (22); the cell carrier (22) is disposed on the conveyor belt (21), can stably carry the cell (1), and can move stably between different workstations under the drive of the conveyor belt (21).

9. The cell tab short-circuit testing device according to claim 8, characterized in that, The top of the battery cell carrier (22) is provided with a V-shaped groove that is adapted to the side of the battery cell (1), which can be used to stably support the battery cell (1).

10. The cell tab short-circuit testing device according to any one of claims 1 to 7, characterized in that, The short-circuit test mechanism (4) further includes a second lifting component (43), which can drive the positive electrode probe (41) and the negative electrode probe (42) to move up and down.

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