Pole piece collision prevention device for pole roll transfer

Abstract

The utility model discloses a pole piece collision prevention device for pole roll transfer, which is used for being arranged at positions close to two ends of a bearing shaft of a pole roll and separating the two ends of the pole roll from the inner wall surface of a bearing shaft supporting plate of a transport case of a pole roll transfer device for a preset distance, and comprises two circular ring hinges which are oppositely arranged at intervals, the two circular ring hinges are connected through a rod-shaped buffer rod, the axis direction of the buffer rod is consistent with the axis of the circular ring hinges, and each circular ring hinge comprises a buckle structure which is used for locking or unlocking the circular ring hinge after the circular ring hinge is closed. The pole piece and pole roll transfer trolley can achieve safe and flexible transportation of pole pieces and pole rolls, can adapt to short-distance and long-distance transportation, is convenient to disassemble and can be suitable for transfer of different pole pieces and pole rolls.

Description

Technical Field

[0001] This utility model relates to the field of electrode sheet and electrode roll transportation technology, and in particular to an electrode roll transfer device to prevent electrode sheet collision. Background Technology

[0002] The rapid growth in lithium-ion battery production capacity, coupled with the wide range of electrode widths and numerous electrode rolls and tabs in different battery models, necessitates higher requirements for the safety and efficiency of electrode transportation during battery manufacturing. Patent CN220702205U discloses a lithium-ion battery electrode roll handling device. This device connects the electrode rolls via clamps and supports, ensuring direct contact between the rolls and hands during handling. It also prevents collisions that could damage the rolls, allowing them to be dropped freely without direct contact with the ground. However, this technology lacks edge cushioning during handling, making the edges susceptible to damage from significant vibrations. Furthermore, the device is bulky and lacks flexibility in handling. Patent CN221719239U discloses a graphite electrode transport and fixing frame, including a base, a support plate, and a spring sleeve. The base has grooves on both sides of its top that mate with the support plate. The bottom of the grooves has locking slots. The graphite electrode's own weight presses down on a first arc-shaped plate, and a fixing rod and connecting rod pull the fixing block and support plate to automatically fix the graphite electrode. This technology requires a large area for transporting electrode rolls, is inefficient, and is inconvenient for personnel to handle, requiring the use of specialized tools for transportation. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and defects of the prior art and to provide an electrode roll transfer anti-electrode collision device, which aims to solve the problems of electrode transport safety and transport efficiency during the transfer process of battery electrodes.

[0004] An anti-electrode collision device for electrode roll transfer is used to be installed near both ends of the load-bearing shaft of the electrode roll, separating the two ends of the electrode roll from the inner wall of the load-bearing shaft support plate of the transport box of the electrode roll transfer device by a predetermined distance. It includes two spaced and oppositely arranged circular hinges, which are connected by a rod-shaped buffer rod. The axis of the buffer rod is consistent with the axis of the circular hinge. Each circular hinge includes a snap-fit ​​structure for locking or unlocking the circular hinge after it is closed.

[0005] The circular hinge includes two semicircular rings, which are hinged together.

[0006] Each of the semicircular rings has a bracket mounting hole, and the two ends of the buffer rod are connected to the corresponding bracket mounting holes on the two ring hinges.

[0007] Each of the semicircular rings has an elastic layer arranged on its inner semicircular surface, which contacts the load-bearing shaft.

[0008] The buffer rods are multiple and arranged at intervals along their radial direction.

[0009] The buffer rod includes a telescopic rod, a sleeve, and a spring. The spring is arranged in the sleeve, and one end of the telescopic rod extends into the sleeve and is connected to the spring.

[0010] The buckle structure includes a first buckle part and a second buckle part, each arranged on the two semicircular rings of the circular hinge.

[0011] The first snap-fit ​​part includes a raised arc-shaped structure, and the second snap-fit ​​part includes a barb-shaped structure that engages with the raised arc-shaped structure.

[0012] The second latching part includes an operating part, which is connected to the barbed structure.

[0013] The buckle structure is connected to the circular hinge by rivets.

[0014] This invention, by adding a protective fixture to the load-bearing shaft of the electrode roll, prevents the electrode roll from colliding with the transport box during transportation, thus achieving safe and flexible transportation of the electrode sheets. It can adapt to both short-distance and long-distance transportation, and the fixture is easy to disassemble and can be used for different electrode sheet transfers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the anti-collision device for electrode roll transfer according to an embodiment of this utility model after it is opened.

[0016] Figure 2 This is a front view of the electrode roll transfer anti-electrode collision device according to an embodiment of this utility model.

[0017] Figure 3 This is a left view of the electrode roll transfer anti-electrode collision device according to an embodiment of this utility model.

[0018] Figure 4 This is a top view of the electrode roll transfer anti-electrode collision device according to an embodiment of this utility model.

[0019] Figure 5 This is a first schematic diagram of the buckle of the anti-collision device for the electrode roll transfer in this embodiment of the present invention.

[0020] Figure 6 This is a second schematic diagram of the buckle of the anti-collision device for the electrode roll transfer in this embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of placing electrode rolls on the transport box of the electrode roll transfer device according to an embodiment of this utility model.

[0022] Figure 8 This is a schematic diagram of the installation of the anti-collision device for electrode roll transfer on the load-bearing shaft according to an embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram showing the interaction between the anti-collision device for electrode roll transfer, as described in this utility model embodiment, mounted on the load-bearing shaft, and the transport box.

[0024] Figure 10 This is a partially enlarged schematic diagram showing the interaction between the electrode roll transfer anti-electrode collision device, which is mounted on the load-bearing shaft, and the transport box according to an embodiment of this utility model.

[0025] Figure 11 This is a partially enlarged view of the electrode roll transfer anti-electrode collision device installed on the load-bearing shaft according to an embodiment of this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] Referring to the figure, an embodiment of the present invention provides an anti-collision device for pole roll transport. This device is positioned near both ends of a load-bearing shaft 8, separating the ends of the pole roll shaft 6 and pole roll 7 from the inner wall of the load-bearing shaft support plate of the transport box 4 of the pole roll transport device by a predetermined distance. The load-bearing shaft 8 is fitted inside the hollow pole roll shaft 6 to support and transport the pole roll 7. The device includes two spaced-apart, oppositely arranged circular hinges 2 connected by a rod-shaped buffer rod 1. The axial direction of the buffer rod is consistent with the axis of the circular hinge. Each circular hinge includes a snap-fit ​​structure 3 for locking or unlocking the circular hinge after it is closed.

[0028] See Figure 9 As shown, the anti-collision device for electrode roll transfer can separate the two ends of the electrode roll from the inner side of the transport box 4, so that the electrode roll 7 can be protected by the elastic force when it shakes. It can effectively prevent the electrode roll from shaking left and right and up and down during the transfer process, which would cause the electrode ears to bump and the core to be pulled out, resulting in the scrapping of the electrode roll. The load-bearing shaft 8 is supported at both ends in the limiting grooves on the two opposite side plates of the transport box 4.

[0029] In this application, the circular hinge is fixed at the opening using a snap-fit ​​structure 3, which facilitates operation and allows it to be locked or removed from the load-bearing shaft.

[0030] The circular hinge includes two semicircular rings 2-4, which are hinged together. If a pin 2-3 is used for hinge, the two semicircular rings can rotate up to 180 degrees until the two rings are parallel. When opened, the circular hinge 2 can be loosened or tightened.

[0031] Each of the semicircular rings has a bracket mounting hole 2-1, and the two ends of the buffer rod 1 are connected to the corresponding bracket mounting holes on the two ring hinges.

[0032] In some embodiments, an elastic layer 2-2 is arranged on the inner surface of each semicircular ring, which contacts the load-bearing shaft. The semicircular ring is made of steel, and the elastic layer is made of rubber, which can be bonded to the semicircular ring. The elastic layer is narrower than the width of the semicircular ring, allowing the semicircular ring to contact and limit the contact between the end of the pole shaft. The elastic layer ensures that the electrode is tightly connected to the load-bearing shaft during transportation, increases the friction with the load-bearing shaft, and prevents the generation of metal shavings during friction with the load-bearing shaft, thus avoiding the introduction of foreign objects that could cause battery self-discharge and short circuits.

[0033] In some embodiments, there are multiple buffer rods 1, arranged radially spaced apart, such as six as shown in the figure. Each of the semicircular rings is connected to three buffer rods, but there may be fewer, such as four or more.

[0034] In some embodiments, the buffer rod 1 includes a telescopic rod, a sleeve, and a spring. The spring is arranged in the sleeve, and one end of the telescopic rod extends into the sleeve and connects with the spring. Preferably, the spring and the sleeve are detachable, and the telescopic rod and the spring can be separated. Different spring sizes can be replaced according to different electrode winding shaft devices, making it convenient to replace the spring.

[0035] The latching structure 3 includes a first latching part and a second latching part, each arranged on one of the two semicircular rings of the circular hinge. The first latching part includes a raised arc-shaped structure 3-2, and the second latching part includes a hook-shaped structure 3-4 that engages with the raised arc-shaped structure. The second latching part includes an operating part 3-3, which is connected to the hook-shaped structure.

[0036] In the above embodiment, based on the snap-fit ​​structure formed by the arc-shaped structure 3-2 connecting the protrusion and the hook-shaped structure 3-4, when fixed, the operating part 3-3 is moved from the vertical direction to the horizontal direction; when it is necessary to loosen the transfer device, it is loosened from the horizontal direction to the vertical direction, such as... Figure 3 The side view shown depicts the fully closed and locked state of the electrode roll transfer anti-electrode collision device.

[0037] The buckle structure 3 is connected to the circular hinge via rivets 3-1.

[0038] The electrode roll transfer anti-electrode collision device 5 of this embodiment is installed on the load-bearing shaft of the electrode roll during use, and then placed on both sides of the electrode roll transfer box 4, as shown. Figure 7As shown, the electrode roll can be protected by elasticity during the transfer process, which can effectively prevent the electrode roll from shaking left and right and up and down during the transfer process, which may cause the electrode roll tab to be bumped and the core to be pulled out, thus making the electrode roll unusable.

[0039] In other embodiments, such as Figure 1 The electrode roll transfer anti-electrode collision device can be matched with different electrode roll spools in actual use. Two common types of electrode roll spools are 8.3cm (3 inches) and 15.2cm (6 inches) in diameter. Two different sizes of electrode roll transfer anti-electrode collision devices can be set up using different electrode roll spools, according to... Figure 4 The upper ring (excluding the elastic layer) of the circular hinge of the electrode roll transfer anti-electrode collision device has an inner diameter of 6cm and can be matched with a 3-inch electrode roll shaft; the anti-collision transfer device with an upper ring (excluding the elastic layer) having an inner diameter of 13cm can be matched with a 6-inch electrode roll shaft.

[0040] The standard width of a rotary shaft ranges from 150mm to 1200mm, and the standard length of a load-bearing shaft is 1850mm. Figure 9 As shown, the width of the transport box used for turnover is 1900mm, and the length of the anti-electrode collision device for the transfer of the electrode roll does not exceed 260mm; the load-bearing shaft is set to be 1850mm long, the anti-electrode collision device for the transfer of the electrode roll is set to be 260mm, the maximum width of the electrode roll shaft is 1200mm, and the length is just enough to fit two anti-electrode collision devices for the transfer of the electrode roll and one electrode roll.

[0041] The inner and outer diameter settings of the electrode roll transfer anti-electrode collision device are as follows: The outer diameter of the electrode roll shaft is 50mm, the inner diameter of the 3-inch electrode roll shaft is 70mm, the shaft wall thickness is 20mm, and the outer diameter is 90mm. Therefore, in the electrode roll transfer anti-electrode collision device, the inner diameter of the annular pad formed by the elastic layer for buffering and stress deformation prevention is set to 50mm, which can fit tightly against the load-bearing rod; the inner diameter of the circular hinge is set to 60mm, and the outer diameter is set to 100mm, ensuring that the top can fully contact the electrode roll shaft. If the electrode roll shaft is 6 inches, with an inner diameter of 140mm, a shaft wall thickness of 20mm, and an outer diameter of 180mm, then the inner diameter of the annular pad formed by the elastic layer is changed to 100mm, and the inner diameter of the circular hinge is changed to 120mm, and the outer diameter is changed to 200mm.

[0042] The compression capacity settings for the electrode roll transfer anti-electrode collision device are as follows: the maximum length of a conventional electrode is 800m, the foil width is 1.2m, the material area width is 1m, and the foil area is 1000m². 2 The material storage area is 800m² 2 The copper foil has a thickness of 10 μm and an areal density of 0.09 g / cm³. 2 The aluminum foil has a thickness of 15μm and an areal density of 0.04g / cm³. 2 In the electrode coating area, the limiting areal density of the negative electrode is 0.03 g / cm³.2 The limiting areal density of the positive electrode is 0.06 g / cm³. 2 The copper foil weighs 90kg, the aluminum foil weighs 32kg, the negative electrode material weighs 240kg, and the positive electrode material weighs 480kg. Therefore, the negative electrode roll weighs 330kg, and the positive electrode roll weighs 512kg. The maximum weight of the electrode roll is calculated as 520kg. The gravity coefficient is 10N / kg, so the weight of the electrode roll is 5200N. The friction force F = μN, where μ is the coefficient of friction between iron and various engineering plastics (0.5). The friction force between the electrode roll and the support rod is F = μN = 2600N. The relative movement between the support rod and the electrode roll caused by the forklift lifting the cargo box or the truck turning is typically 1m / s. Without buffering, the electrode roll is transported... The anti-collision device for the electrode roll deceleration is provided by friction, and the acceleration formula is: F = ma, a = F / m = 2600 / 520 = 5m / s. The formula for calculating the distance traveled is V2 = 2as, s = 10cm, which means that the device stops after traveling 10cm, and the final position is about 10cm away from the placement center. If there is a buffer electrode roll transfer anti-collision device, the deceleration acceleration is provided by both friction and elasticity. The deceleration acceleration is a = F / m = (F friction + F elasticity) / m. The elasticity formula is F = kx, and the conventional elasticity index k is set to 4N / mm, which is 4000N / m.

[0043] The electrode roll transfer anti-collision device has 6 buffer rods, which are 6 compression springs, a = (2600 + 24000x) / 520. Since the electrode roll transfer anti-collision device is close to the electrode roll shaft, it starts to contact the spring from V = 1m / s. As the spring is gradually compressed, the elastic force increases, the electrode roll decelerates faster, and the final deviation from the center of gravity is less, making the electrode roll more stable. It can also limit the relative motion speed obtained by the electrode roll during the initial shaking.

[0044] In this embodiment of the electrode roll transfer anti-electrode collision device, the spring compression limit length is 8cm. Calculating the elastic force based on a spring compression length of 8cm, a = (2600 + 24000 × 0.08) / 520 = 8.70 m / s. The displacement is s = V² / 2a = 0.07m = 6cm, and the actual movement distance is approximately 5-6cm. Considering the maximum weight of the electrode roll, the electrode roll transfer anti-electrode collision device does not reach the elastic compression limit; actual electrode rolls will not be that heavy. Therefore, it can withstand the shaking during the transportation of all lithium battery electrode rolls.

[0045] The electrode roll transfer and anti-electrode collision device of this utility model embodiment facilitates short-distance and long-distance transportation of electrode rolls, and the anti-collision electrode transfer and disassembly are flexible, easy to carry, and have a long service life.

[0046] This invention enables safe and flexible transportation of electrode sheets, adapting to both short-distance and long-distance transport. The tooling is easy to disassemble and can be used for different electrode sheet transfers.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic features of this utility model.

[0048] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, it is intended to encompass all variations falling within the meaning and scope of the equivalents of the claims within the present invention.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electrode roll transfer device to prevent electrode collision, characterized in that, For setting on the load-bearing shaft of the pole roll near both ends, separating the two ends of the pole roll from the inner wall of the load-bearing shaft support plate of the transport box of the pole roll transfer device by a predetermined distance, including two spaced and oppositely arranged circular hinges, the two circular hinges being connected by a rod-shaped buffer rod, the axis of the buffer rod being consistent with the axis of the circular hinge, each of the circular hinges including a snap-fit ​​structure for locking or unlocking the circular hinge after it is closed.

2. The electrode roll transfer anti-electrode collision device according to claim 1, characterized in that, The circular hinge includes two semicircular rings, which are hinged together.

3. The electrode roll transfer anti-electrode collision device according to claim 2, characterized in that, The semicircular ring has bracket mounting holes, and the two ends of the buffer rod are connected to the corresponding bracket mounting holes on the two ring hinges.

4. The electrode roll transfer anti-electrode collision device according to claim 2, characterized in that, Each of the semicircular rings has an elastic layer arranged on its inner semicircular surface, through which it contacts the load-bearing shaft.

5. The electrode roll transfer anti-electrode collision device according to claim 1, characterized in that, The buffer rods are multiple and arranged at intervals along their radial direction.

6. The electrode roll transfer anti-electrode collision device according to claim 2, characterized in that, The buffer rod includes a telescopic rod, a sleeve, and a spring. The spring is arranged in the sleeve, and one end of the telescopic rod extends into the sleeve and is connected to the spring.

7. The electrode roll transfer anti-electrode collision device according to claim 2, characterized in that, The buckle structure includes a first buckle part and a second buckle part, each arranged on the two semicircular rings of the circular hinge.

8. The electrode roll transfer anti-electrode collision device according to claim 7, characterized in that, The first snap-fit ​​part includes a raised arc-shaped structure, and the second snap-fit ​​part includes a barb-shaped structure that engages with the raised arc-shaped structure.

9. The electrode roll transfer anti-electrode collision device according to claim 8, characterized in that, The second latching part includes an operating part, which is connected to the barbed structure.

10. The electrode roll transfer anti-electrode collision device according to claim 1, characterized in that, The buckle structure is connected to the circular hinge by rivets.

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