A polarity adjustment device and method for cylindrical battery packs

Abstract

This disclosure relates to a polarity adjustment device and method for a cylindrical battery pack. The device may include a detection mechanism, a guide rail, and a polarity adjustment mechanism. The detection mechanism includes a clamping rod with the battery pack fixed to it and a camera, the camera being used to acquire the polarity of the battery pack. The battery pack can be moved from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail. The polarity adjustment mechanism includes a pushing unit and a flipping unit. The flipping unit includes a first flipping mechanism located near the pushing unit and above the guide rail. The pushing unit is used to push a target battery to the first flipping unit according to the polarity of the battery pack. The first flipping unit is used to flip the polarity of the target battery. According to the technical solution provided in this disclosure, the battery cells can be arranged and positioned at staggered intervals according to their polarity direction to ensure a suitable battery connection during charging.

Description

Technical Field

[0001] This disclosure relates to the field of battery manufacturing technology, and in particular to a polarity adjustment device and method for cylindrical battery packs. Background Technology

[0002] Cylindrical batteries are characterized by high capacity, long cycle life, and a wide operating temperature range, making them widely used. Traditional methods for adjusting the polarity of cylindrical batteries involve mechanical rotation and manual intervention. Mechanical rotation utilizes robotic arms, rollers, or clamps to rotate the cylindrical battery to the desired polarity. However, the precision of mechanical rotation is limited by the mechanical components, making it difficult to achieve highly accurate polarity adjustments, especially for demanding battery applications. Human error can lead to inaccurate polarity adjustments, potentially causing problems during battery assembly. Furthermore, in existing technologies, it is impossible to stagger the polarity of batteries in batches during polarity adjustment, hindering the provision of suitable battery connections for subsequent charging at the workstation and consequently preventing optimization of the battery pack's charging performance. Summary of the Invention

[0003] This disclosure provides a cylindrical battery polarity adjustment device and method to at least solve the problem in related technologies of how to automatically misalign battery packs to provide suitable battery connections and optimize charging performance. The technical solution of this disclosure is as follows: According to a first aspect of the present disclosure, a cylindrical battery polarity adjustment device is provided, including a detection mechanism, The detection mechanism includes a guide rail (1) and a polarity adjustment mechanism. The detection mechanism includes a clamping rod (2) with a fixed battery pack and a camera (3). The camera (3) is used to acquire the polarity of the battery pack. The battery pack can move from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail (1). The polarity adjustment mechanism includes a pushing unit (4) and a flipping unit (5). The flipping unit (5) includes a first flipping mechanism (51). The first flipping mechanism (51) is close to the pushing unit (4) and located above the guide rail (1). The pushing unit (4) is used to push the target battery to the first flipping mechanism (51) according to the polarity of the battery pack. The first flipping mechanism (51) is used to flip the polarity of the target battery.

[0004] In one possible implementation, the detection mechanism further includes a bar light source (6) located between the camera (3) and the battery pack, the bar light source (6) being used to provide illumination for the camera (3).

[0005] In one possible implementation, the detection mechanism further includes a servo motor (7) and a first cylinder (8), the servo motor (7) being connected to the clamping rod (2), and the servo motor (7) and the first cylinder (8) being used to adjust the angle of each cell of the battery pack.

[0006] In one possible implementation, the pushing unit includes a second cylinder (9) and a first push rod (10), and the polarity adjustment mechanism includes a third cylinder (11) and a second push rod (12). The second cylinder (9), the first push rod (10), the second push rod (12), and the third cylinder (11) are used to position the battery pack.

[0007] In one possible implementation, the flipping unit further includes a second flipping mechanism (52) for docking with the first flipping mechanism (51) to transfer the battery pack to the next work station.

[0008] In one possible implementation, the first flipping mechanism (51) includes a first reducer (511) and a first flipping device (512), and the second flipping mechanism (52) includes a second reducer (521) and a second flipping device (522).

[0009] In one possible implementation, the first flipping device (512) and the second flipping device (522) are fixed with a fourth cylinder (13) for fixing the battery pack.

[0010] In one possible implementation, a first drag chain (14) and a second drag chain (15) are provided below the first flipping mechanism (51) and the second flipping mechanism (52), the first drag chain (14) being used to drive the first flipping mechanism (51) to move, and the second drag chain (15) being used to drive the second flipping mechanism (52) to move.

[0011] According to a second aspect of the present disclosure, a method for adjusting the polarity of a cylindrical battery pack is provided, comprising: The angle and polarity of each cell in the battery pack are detected to obtain the test results. Based on the test results, the angles of each cell in the battery pack are adjusted to be consistent. The battery pack is delivered to the pushing unit; the pushing unit pushes the target battery to the first flipping mechanism according to the detection result; After the first flipping mechanism flips the target battery, the pushing unit pushes the remaining batteries in the battery pack to the first flipping mechanism. The first flipping mechanism docks with the second flipping mechanism, allowing the battery pack to be transferred to the second flipping mechanism.

[0012] In one possible implementation, after the first flipping mechanism docks with the second flipping mechanism, transferring the battery pack into the second flipping mechanism, the method further includes: The second flipping mechanism transports the battery pack to the next workstation and rotates the battery pack.

[0013] The technical solution provided by the embodiments of this disclosure brings at least the following beneficial effects: The device includes a detection mechanism, a guide rail, and a polarity adjustment mechanism. The detection mechanism includes a clamping rod with a fixed battery pack and a camera. The camera is used to acquire the polarity of the battery pack. The battery pack can move from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail. The polarity adjustment mechanism includes a pushing unit and a flipping unit. The flipping unit includes a first flipping mechanism, which is located near the pushing unit and above the guide rail. The pushing unit is used to push the target battery to the first flipping unit according to the polarity of the battery pack. The first flipping unit is used to flip the polarity of the target battery. Based on the results acquired by the camera in the detection mechanism, the battery cells are automatically arranged and positioned at staggered intervals according to their polarity direction, so that the polarities of adjacent batteries in the battery pack are opposite, that is, the positive and negative terminals are adjacent, so as to provide a suitable battery connection when the subsequent work station charges the entire battery pack, thereby optimizing the charging performance of the battery pack.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure. For example, and together with the description, are used to explain the principles of this disclosure, and do not constitute an undue limitation of this disclosure.

[0016] Figure 1 This is a schematic diagram of a cylindrical battery polarity adjustment device according to an embodiment of the present invention; Figure 2 This is a partial schematic diagram of a testing mechanism according to an exemplary embodiment; Figure 3 This is a schematic diagram of a polarity adjustment mechanism according to an exemplary embodiment; Figure 4 This is a schematic diagram of a first flipping mechanism and a second flipping mechanism according to an exemplary embodiment; Figure 5 A schematic diagram of a first cable chain according to an exemplary embodiment; Figure 6A schematic diagram of a second drag chain according to an exemplary embodiment; Figure 7 This is a flowchart illustrating a method for adjusting the polarity of a cylindrical battery according to an exemplary embodiment.

[0017] In the figure, the reference numerals should be as follows: 1-guide rail, 2-clamping rod, 3-camera, 4-pushing unit, 5-flipping unit, 51-first flipping mechanism, 52-second flipping mechanism, 511-first reducer, 512-first flipping device, 521-second reducer, 522-second flipping device, 6-strip light source, 7-servo motor, 8-first cylinder, 9-second cylinder, 10-first push rod, 11-third cylinder, 12-second push rod, 13-fourth cylinder, 14-first cable chain, 15-second cable chain. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0020] Please see Figure 1 , Figure 1 This is a schematic diagram of a cylindrical battery polarity adjustment device according to an embodiment of the present invention. The cylindrical battery polarity adjustment device includes a detection mechanism, a guide rail (1), and a polarity adjustment mechanism. The detection mechanism includes a clamping rod (2) with a battery pack fixed thereon and a camera (3). The camera (3) is used to acquire the polarity of the battery pack. The battery pack can move from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail (1). The polarity adjustment mechanism includes a pushing unit (4) and a flipping unit (5). The flipping unit (5) includes a first flipping mechanism (51). The first flipping mechanism (51) is close to the pushing unit (4) and located above the guide rail (1). The pushing unit (4) is used to push the target battery to the first flipping mechanism (51) according to the polarity of the battery pack. The first flipping mechanism (51) is used to flip the polarity of the target battery.

[0021] In the embodiments of this specification, the guide rail (1) can be a linear guide rail or a curved guide rail. This application does not limit this. Preferably, the guide rail (1) is a linear guide rail.

[0022] In the embodiments of this specification, camera (3) may refer to a camera that can capture two-dimensional images and has a wider shooting range, preferably an area array camera.

[0023] It should be noted that, based on the camera's field of view, this application employs two area scan cameras, achieving superior results with a smaller number of area scan cameras, thereby reducing overall costs.

[0024] In one possible implementation, the camera can detect the cell angle and whether a deviation occurs after the angle is adjusted.

[0025] In the embodiments of this specification, the target battery may refer to a portion of the battery pack that needs to be reversed according to the battery pack required for the final product. It may be 4, 6 or 8, etc., and may be positive or negative. This application does not limit this.

[0026] In the embodiments of this specification, the detection mechanism may include a slider (not shown in the figure), which, in conjunction with a cylinder, transports the fixture carrying the battery pack from the previous mechanism to the next mechanism.

[0027] In the embodiments of this specification, the detection mechanism can refer to a device that can detect the polarity of the battery pack and the angle of the battery pack cells; the polarity adjustment mechanism can refer to a device that can arrange the battery pack in a staggered manner according to the polarity direction.

[0028] In one possible implementation, the pushing unit (4) obtains the polarity of the battery pack based on the battery pack image captured by the camera (3) in the detection mechanism, and pushes the target battery to the first flipping mechanism (51) according to the battery pack required for the final product. For example, the battery pack required for the final product is a set of ten batteries, with odd-numbered positions being positive and even-numbered positions being negative. When the initial battery pack is a set of ten positive polarity batteries, the pushing unit (4) pushes all the even-numbered positive polarity batteries to the first flipping mechanism (51), thus obtaining a battery pack with odd-numbered positions being positive and even-numbered positions being negative. When the initial battery pack is a set of ten negative polarity batteries, the pushing unit (4) pushes all the odd-numbered negative polarity batteries to the first flipping mechanism (51), thus obtaining a battery pack with odd-numbered positions being positive and even-numbered positions being negative.

[0029] In one possible implementation, the first flipping mechanism (51) flips the target battery 180 degrees to the opposite polarity.

[0030] In the embodiments described in this specification, the battery pack can move from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail (1), and the push unit (4) pushes the target battery to the first flipping mechanism (51) according to the polarity of the battery pack. The first flipping mechanism (51) flips the polarity of the target battery by a programmable logic controller (PLC) system. It should be noted that the PLC system can be integrated with various sensors, actuators and other control devices to form a complete automation system, providing real-time control and making it suitable for applications that require high-precision control.

[0031] Based on the results captured by the camera in the testing facility, the battery cells are automatically arranged and positioned at staggered intervals according to their polarity direction, so that the polarities of adjacent cells in the battery pack are opposite, that is, the positive and negative terminals are adjacent, so as to provide a suitable battery connection when the entire battery pack is charged in subsequent work stations, thereby optimizing the charging performance of the battery pack.

[0032] The detection mechanism also includes a bar light source (6), which is located between the camera (3) and the battery pack, and is used to provide illumination for the camera (3).

[0033] In one possible implementation, the bar light source (6) is located between the camera (3) and the battery pack, and the camera captures images of the battery pack through the bar light source.

[0034] The bar light source, located between the camera and the battery pack, provides illumination for the camera's shooting, enabling clearer and more effective access to battery pack information.

[0035] Please see Figure 2 , Figure 2 This is a partial schematic diagram of a detection mechanism according to an exemplary embodiment. The detection mechanism further includes a servo motor (7) and a first cylinder (8). The servo motor (7) is connected to the clamping rod (2). The servo motor (7) and the first cylinder (8) are used to adjust the angle of each cell of the battery pack.

[0036] In one possible implementation, each servo motor (7) is connected to a clamping rod (2), which is driven to rotate to adjust the battery to a specific angle.

[0037] In one possible implementation, the servo motor (7) and the first cylinder (8) detect the angle of the battery cell by the camera and obtain the corresponding adjustment requirements through intelligent analysis. Then, the servo motor and cylinder under the control of the programmable logic controller perform the angle adjustment operation to adjust the angle of each battery cell in the battery pack.

[0038] By using servo motors and cylinders, high-precision, batch positioning angle adjustment of cylindrical battery cells can be achieved.

[0039] Please see Figure 3 , Figure 3 This is a schematic diagram of a polarity adjustment mechanism according to an exemplary embodiment; the pushing unit includes a second cylinder (9) and a first push rod (10), and the polarity adjustment mechanism includes a third cylinder (11) and a second push rod (12), the second cylinder (9), the first push rod (10), the second push rod (12) and the third cylinder (11) being used to position the battery pack.

[0040] In one possible implementation, the second cylinder (9) drives the first push rod (10) to push the battery pack to the first flipping mechanism (51).

[0041] In another possible implementation, the second cylinder (9) drives the first push rod (10) and the third cylinder (11) drives the second push rod (12) to precisely position the battery pack.

[0042] By using a cylinder to drive a push rod to adjust the battery pack, the battery pack is ensured to remain in the correct position throughout the production process, thereby significantly improving the product qualification rate.

[0043] Please see Figure 3 , Figure 3 This is a schematic diagram of a polarity adjustment mechanism according to an exemplary embodiment; the flipping unit further includes a second flipping mechanism (52), which is used to dock with the first flipping mechanism (51) to transfer the battery pack to the next work station.

[0044] In one possible implementation, the second flipping mechanism (52) docks with the first flipping mechanism (51), receives the flipped battery pack and transfers it to the next work station, and then rotates the battery pack to the corresponding angle, for example, 45 degrees, 90 degrees or 180 degrees, which is not limited in this application.

[0045] Using two flipping mechanisms can improve work efficiency. Due to the limitations of the guide rail, the movement direction of the flipping mechanism is relatively fixed. By using two alternating flipping mechanisms, the entire battery pack can be moved in other directions.

[0046] Please see Figure 4 , Figure 4 This is a schematic diagram of a first flipping mechanism and a second flipping mechanism according to an exemplary embodiment; the first flipping mechanism (51) includes a first reducer (511) and a first flipping device (512), and the second flipping mechanism (52) includes a second reducer (521) and a second flipping device (522).

[0047] A speed reducer is used to slow down the rotational speed of a motor or power source in order to provide greater torque. Combining a speed reducer with a tilting device allows for the achievement of the desired output speed and torque.

[0048] Please see Figure 4 , Figure 4 This is a schematic diagram of a first flipping mechanism and a second flipping mechanism according to an exemplary embodiment; the first flipping device (512) and the second flipping device (522) are fixed with a fourth cylinder (13), which is used to fix the battery pack.

[0049] The cylinders on the flipping device fix the battery pack, which can keep the cell angle stable.

[0050] Please see Figure 5 as well as Figure 6 , Figure 5 A schematic diagram of a first cable chain according to an exemplary embodiment; Figure 6 A schematic diagram of a second cable chain is shown according to an exemplary embodiment; a first cable chain (14) and a second cable chain (15) are disposed below the first flipping mechanism (51) and the second flipping mechanism (52), the first cable chain (14) is used to drive the first flipping mechanism (51) to move, and the second cable chain (15) is used to drive the second flipping mechanism (52) to move.

[0051] In one possible implementation, the bottom of the first drag chain (14) and the bottom of the second drag chain (15) are fixed to the base plate, and their upper parts can be connected to the flipping mechanism through a fixed sheet metal part. The first drag chain (14) drives the first flipping mechanism (51) to move, and the second drag chain (15) drives the second flipping mechanism (52) to move.

[0052] The cable chain drives the tilting mechanism, facilitating efficient battery pack adjustment.

[0053] Figure 7 This is a flowchart illustrating a method for adjusting the polarity of a cylindrical battery according to an exemplary embodiment. Figure 7 As shown, it may include the following steps.

[0054] S701 detects the angle and polarity of each cell in the battery pack and obtains the test results.

[0055] In the embodiments described in this specification, the cell angle can be 1 degree, 2 degrees or 5 degrees, and this application does not limit it; the battery polarity can be positive or negative.

[0056] In one possible implementation, the angle of each cell in the battery pack and the polarity of the battery can be detected by an area scan camera to obtain the detection results. The area scan camera can detect through a bar light source.

[0057] S703, adjust the angle of each cell in the battery pack to be consistent according to the detection results.

[0058] In one possible implementation, based on the detection results obtained from intelligent analysis, a programmable logic controller controls a servo motor and a cylinder to adjust the angle of each cell in the battery pack to be consistent.

[0059] For example, in a group of batteries, if the test results are (30°, 30°, 30°, 30°, 31°, 30°, 30°, 30°, 30°, 30°), then based on the test results, the fifth battery cell, which was 31°, is adjusted to 30° to keep the angle consistent with the other cells.

[0060] S705, the battery pack is delivered to the pushing unit; the pushing unit pushes the target battery to the first flipping mechanism according to the detection result.

[0061] In one possible implementation, the battery pack can be transported to the push unit by a guide rail. In the embodiments of this specification, the guide rail (1) can be a linear guide rail or a curved guide rail. This application does not limit this. Preferably, the guide rail (1) is a linear guide rail.

[0062] In the embodiments described in this specification, the pushing unit may include a cylinder and a push rod.

[0063] In the embodiments described in this specification, the first tilting mechanism may include a speed reducer and a tilting device, the tilting device may include a cylinder, and a first drag chain is provided below the first tilting mechanism.

[0064] In the embodiments of this specification, the target battery may refer to a portion of the battery pack that needs to be reversed according to the battery pack required for the final product. It may be 4, 6 or 8, etc., and may be positive or negative. This application does not limit this.

[0065] In one possible implementation, the pushing unit (4) obtains the polarity of the battery pack based on the battery pack image captured by the camera (3) in the detection mechanism, and pushes the target battery to the first flipping mechanism (51) according to the battery pack required for the final product. For example, the battery pack required for the final product is a set of ten batteries, with odd-numbered positions being positive and even-numbered positions being negative. When the initial battery pack is a set of ten positive polarity batteries, the pushing unit (4) pushes all the even-numbered positive polarity batteries to the first flipping mechanism (51), thus obtaining a battery pack with odd-numbered positions being positive and even-numbered positions being negative. When the initial battery pack is a set of ten negative polarity batteries, the pushing unit (4) pushes all the odd-numbered negative polarity batteries to the first flipping mechanism (51), thus obtaining a battery pack with odd-numbered positions being positive and even-numbered positions being negative.

[0066] S707, after the first flipping mechanism flips the target battery, the pushing unit pushes the remaining batteries in the battery pack to the first flipping mechanism.

[0067] In one possible implementation, the first flipping mechanism flips the target battery 180 degrees.

[0068] In another possible implementation, after the first flipping mechanism flips the target battery, the push rod and cylinder of the pushing unit cooperate to push the remaining batteries in the battery pack to the first flipping mechanism.

[0069] S709, the first flipping mechanism docks with the second flipping mechanism, so that the battery pack is transferred to the second flipping mechanism.

[0070] In the embodiments described in this specification, the second tilting mechanism may include a speed reducer and a tilting device, the tilting device may include a cylinder, and a second drag chain is provided below the second tilting mechanism.

[0071] In one possible implementation, the first flipping mechanism moves via a cable chain and docks with the second flipping mechanism.

[0072] In another possible implementation, the first flipping mechanism is connected to the second flipping mechanism, and the battery pack is transferred to the second flipping mechanism by the push rod and the cylinder.

[0073] The coordinated operation of the first and second flipping mechanisms increases overall efficiency.

[0074] After the first flipping mechanism docks with the second flipping mechanism, transferring the battery pack to the second flipping mechanism, the method further includes: The second flipping mechanism transports the battery pack to the next workstation and rotates the battery pack.

[0075] In one possible implementation, the second flipping mechanism moves via a cable chain to transport the battery pack to the next station and rotates the battery pack.

[0076] It should be noted that rotating the battery pack can be done by rotating it to 90 degrees, 180 degrees or 270 degrees, and this application does not limit this.

[0077] The second flipping mechanism carries the adjusted battery pack to the next work station, improving work efficiency and enabling the battery pack to move in multiple directions.

[0078] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0079] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0080] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0081] It should be noted that the embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0082] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A polarity adjustment device for a cylindrical battery pack, characterized in that, The device includes a detection mechanism, a guide rail (1), and a polarity adjustment mechanism. The detection mechanism is used to detect the polarity of the battery pack and the angle of the battery cells. The detection mechanism includes a clamping rod (2) with the battery pack fixed to it and a camera (3). The camera (3) is used to acquire the polarity of the battery pack. The battery pack can be moved from the detection mechanism to the polarity adjustment mechanism under the drive of the guide rail (1). The detection mechanism also includes a servo motor (7) and a first cylinder (8). The servo motor (7) is connected to the clamping rod (2). The servo motor (7) and the first cylinder (8) are used to adjust the angle of each cell of the battery pack. The polarity adjustment mechanism is used to arrange the battery pack in a staggered manner according to the polarity direction; the polarity adjustment mechanism includes a pushing unit (4) and a flipping unit (5), the flipping unit (5) includes a first flipping mechanism (51), the first flipping mechanism (51) is close to the pushing unit (4) and located above the guide rail (1), the pushing unit (4) is used to push the target battery to the first flipping mechanism (51) according to the polarity of the battery pack, and the first flipping mechanism (51) is used to flip the polarity of the target battery.

2. The cylindrical battery pack polarity adjustment device according to claim 1, characterized in that, The detection mechanism also includes a bar light source (6), which is located between the camera (3) and the battery pack, and is used to provide illumination for the camera (3).

3. The cylindrical battery pack polarity adjustment device according to claim 1, characterized in that, The pushing unit includes a second cylinder (9) and a first push rod (10), and the polarity adjustment mechanism includes a third cylinder (11) and a second push rod (12). The second cylinder (9), the first push rod (10), the second push rod (12) and the third cylinder (11) are used to position the battery pack.

4. The cylindrical battery pack polarity adjustment device according to claim 1, characterized in that, The flipping unit also includes a second flipping mechanism (52), which is used to dock with the first flipping mechanism (51) to transfer the battery pack to the next work station.

5. The cylindrical battery pack polarity adjustment device according to claim 4, characterized in that, The first flipping mechanism (51) includes a first reducer (511) and a first flipping device (512), and the second flipping mechanism (52) includes a second reducer (521) and a second flipping device (522).

6. The cylindrical battery pack polarity adjustment device according to claim 5, characterized in that, The first flipping device (512) and the second flipping device (522) are fixed with a fourth cylinder (13), which is used to fix the battery pack.

7. The cylindrical battery pack polarity adjustment device according to claim 6, characterized in that, A first drag chain (14) and a second drag chain (15) are provided below the first flipping mechanism (51) and the second flipping mechanism (52). The first drag chain (14) is used to drive the first flipping mechanism (51) to move, and the second drag chain (15) is used to drive the second flipping mechanism (52) to move.

8. A method for adjusting the polarity of a cylindrical battery pack, characterized in that, Applied to the cylindrical battery pack polarity adjustment device as described in any one of claims 1-7; the method includes: The angle and polarity of each cell in the battery pack are detected to obtain the test results. Based on the test results, the angles of each cell in the battery pack are adjusted to be consistent. The battery pack is delivered to the pushing unit; the pushing unit pushes the target battery to the first flipping mechanism according to the detection result; After the first flipping mechanism flips the target battery, the pushing unit pushes the remaining batteries in the battery pack to the first flipping mechanism. The first flipping mechanism docks with the second flipping mechanism, allowing the battery pack to be transferred to the second flipping mechanism.

9. The polarity adjustment method for a cylindrical battery pack according to claim 8, characterized in that, After the first flipping mechanism docks with the second flipping mechanism, transferring the battery pack to the second flipping mechanism, the method further includes: The second flipping mechanism transports the battery pack to the next workstation and rotates the battery pack.

Images