Carrying device and battery production system

Abstract

The utility model relates to the technical field of battery related equipment, and discloses a carrying device and a battery production system.The carrying device comprises a supporting piece, a reference piece and a driving mechanism, the reference piece comprises a main body part and a protection part, and the main body part is installed on the supporting piece and extends in the first direction; one of the two opposite sides, in the second direction, of the main body part is a first side face, the protection part is arranged on the first side face and extends in the first direction, the protection part is used for making contact with a to-be-carried piece, and the hardness of the protection part is smaller than that of the main body part; the driving mechanism is installed on the supporting piece and used for driving the to-be-carried piece abutting against the protection part to move in the first direction. The carrying device can be used for carrying related components of the battery and can reduce damage of the reference part to the related components of the battery, so that the quality of the battery is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery-related equipment, and in particular to a transport device and a battery production system. Background Art

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] As the demand for clean energy increases, batteries have been widely developed. Batteries are not only used in energy storage power systems such as hydropower, thermal, wind and solar power stations, but are also widely used in electric transportation vehicles such as electric bicycles, electric motorcycles, electric cars, as well as in military equipment, aerospace and other fields.

[0004] How to improve battery quality and reduce battery production costs has always been the focus of attention in the battery research and development process. Utility Model Content

[0005] In view of the above problems, the present application provides a transport device to improve the quality of the battery by reducing the damage caused by the transport device to the battery.

[0006] The first aspect of the present application proposes a transport device, including a support member, a reference member and a driving mechanism, the reference member including a main body and a protective part, the main body is installed on the support member, the main body extends along a first direction, one of the two opposite sides of the main body along a second direction is a first side surface, the protective part is arranged on the first side surface and extends along the first direction, the protective part is used to contact with the workpiece to be transported, the first direction intersects with the second direction, and the hardness of the protective part is less than the hardness of the main body; the driving mechanism is installed on the support member, and is used to drive the workpiece to be transported that is against the protective part to move along the first direction.

[0007] In the technical solution of the embodiment of the present application, the hardness of the main body is higher, and the hardness of the protective part is lower. The main body can maintain the supporting strength of the main body, improve the accuracy of guiding and positioning the parts to be transported, and the protective part is used to contact the parts to be transported, which can reduce the possibility of the parts to be transported being damaged by the reference part. The transport device can be used to transport battery-related components. For example, the transport device can be used to transport battery cells. When the transport device of the embodiment of the present application is used to transport battery-related components, the damage of the reference part to the battery-related components can be reduced, thereby improving the quality of the battery.

[0008] In addition, the handling device according to the present application may also have the following additional technical features:

[0009] In some embodiments of the present application, the protective part is a profile. Different from a thin strip, the protective part of this embodiment is set as a profile, which has a certain thickness and strength, is not easy to be damaged, has improved wear resistance and durability, reduces the frequency of replacement of the protective part, reduces production costs, does not require frequent shutdowns, and improves production efficiency.

[0010] In some embodiments of the present application, the main body is a metal profile, and the protective part is an organic polymer profile. The main body and the protective part of the embodiment are easy to process, and the materials are easy to obtain and the cost is low.

[0011] In some embodiments of the present application, the protection part is detachably arranged on the main body. The protection part is detachably arranged on the main body, and when the protection part is damaged, the protection part can be replaced, thereby improving the applicability of the handling device.

[0012] In some embodiments of the present application, the first side is provided with a mounting groove, and the protective part is at least partially embedded in the mounting groove. In this embodiment, by providing a mounting groove on the first side to install the protective part, the assembly convenience and installation stability of the protective part and the main body are improved.

[0013] In some embodiments of the present application, the protection part includes an embedding part and a main body part, the embedding part is fixedly connected to the main body part, the embedding part is embedded in the installation groove, and along the second direction, the main body part protrudes relative to the first side surface. The main body part of this embodiment protrudes relative to the first side surface, and when the transported part moves toward the protection part, it is not easy to contact the main body part of the reference part, which can reduce the possibility of the transported part being damaged by the main body part.

[0014] In some embodiments of the present application, along the third direction, at least one of the two opposite sides of the main body protrudes beyond the embedded portion and forms a protruding portion, and the protruding portion abuts against the first side surface, and the first direction, the second direction and the third direction intersect each other. The protruding portion abuts against the first side surface, which can reduce the pressure on the main body, and the situation in which the protruding portion is recessed into the installation groove can reduce the possibility of the part to be transported being damaged by the main body. Moreover, through the protruding portion, the extension width of the main body along the third direction is greater than the extension width of the embedded portion along the third direction. The extension width of the main body along the third direction is larger, which can increase the contact area between the part to be transported and the protective portion, and the extension width of the embedded portion along the third direction is smaller, which improves the convenience of the embedded portion in the installation groove.

[0015] In some embodiments of the present application, the main body includes a bottom wall, a first side wall, and a second side wall surrounding the mounting groove, the orientation of the notch of the mounting groove is consistent with the orientation of the first side surface, the bottom wall and the notch of the mounting groove are opposite and spaced apart along the second direction, the first side wall and the second side wall are spaced apart along the third direction, the first side wall and the second side wall both extend along the first direction, the first side wall and the second side wall are both provided with a groove, and the embedding portion is provided with convex strips on both sides along the third direction, and the convex strips are provided in the grooves on the corresponding sides. In this embodiment, the connection stability between the protective portion and the main body can be improved by matching the convex strips on the embedding portion with the grooves on the main body.

[0016] In some embodiments of the present application, along the first direction, the protection portion extends from one end of the main body portion to the other end of the main body portion. In this embodiment, by setting the extension length of the protection portion to be substantially the same as the extension length of the main body portion, the reference member is more beautiful, and any position of the reference member along the first direction is basically protected by the protection portion, which can increase the application range of the reference member and reduce the damage of the reference member to the transported member.

[0017] In some embodiments of the present application, the reference member further includes a limiting structure, the main body and the protective part are respectively connected to the limiting structure, and the limiting structure is used to limit the relative movement of the protective part and the main body along the first direction. The handling device of this embodiment can improve the stability of the connection between the protective part and the main body by setting the limiting structure.

[0018] In some embodiments of the present application, along the first direction, the end faces of the main body are respectively the first end face and the second end face, the end faces of the protective part are respectively the third end face and the fourth end face, the first end face and the third end face are located at the same end, the second end face and the fourth end face are located at the same end, and the limiting structure is connected between the first end face and the third end face and between the second end face and the fourth end face. Along the first direction, the two ends of the reference part are respectively provided with limiting structures, which can improve the stability of the relative fixation of the protective part and the main body along the first direction and reduce the possibility of the protective part sliding relative to the main body along the first direction. At the same time, the limiting structure is provided on the end faces of the main body and the protective part, so that the limiting structure can be assembled more conveniently, and the contact surface of the protective part and the limiting structure are located at different positions of the reference part, and the limiting structure can avoid the part to be transported.

[0019] In some embodiments of the present application, the limiting structure includes a limiting plate and a fastener. The limiting structure arranged on the first end face is a first limiting structure. The limiting plate of the first limiting structure is fixedly connected to the main body through the fastener and the limiting plate is pressed against the first end face and the third end face. The limiting structure arranged on the second end face is a second limiting structure. The limiting plate of the second limiting structure is fixedly connected to the main body through the fastener and the limiting plate is pressed against the second end face and the fourth end face. In the handling device of this embodiment, the fastener is connected to the main body to fix the limiting plate. The hardness of the main body is relatively high, it is not easy to cause damage, and the connection stability is relatively high. The limiting plate is fixed by the fastener, the structure is simple, and both ends of the main body and the protective part are limited by the limiting plate, which reduces the possibility of the protective part moving relative to the main body along the first direction.

[0020] In some embodiments of the present application, the first end face and the second end face are both provided with a first notch groove, the third end face and the fourth end face are both provided with a second notch groove, the first notch groove of the first end face and the second notch groove of the third end face are matched to form a limiting groove, the first notch groove of the second end face and the second notch groove of the fourth end face are matched to form a limiting groove, and the limiting plate is arranged in the limiting groove of the corresponding end. By setting the limiting groove, this embodiment can locate the installation position of the limiting plate and improve the installation stability of the limiting plate; at the same time, the limiting groove can accommodate the limiting plate, so that the limiting plate of the first limiting structure does not protrude from the first side and the third surface, and the limiting plate of the second limiting structure does not protrude from the second surface and the fourth surface, the structure is neater, and under the condition of using multiple reference parts and multiple reference parts are docked along the first direction, the adjacent reference parts are docked end to end, and the docking flatness is better.

[0021] In some embodiments of the present application, the friction coefficient of the surface of the protective part used to contact the part to be transported is less than 0.3; and / or the roughness of the surface of the protective part used to contact the part to be transported is less than 2.5μm. The friction coefficient of the contact surface is relatively small, which can reduce the resistance of the part to be transported to move along the first direction on the protective part, reduce the wear of the part to be transported on the protective part, and at the same time reduce the damage of the protective part to the part to be transported, and can also improve the smoothness of the movement of the part to be transported along the first direction. The roughness of the contact surface is relatively small, which can reduce the resistance of the part to be transported to move along the first direction on the protective part, reduce the wear of the part to be transported on the protective part, and at the same time reduce the damage of the protective part to the part to be transported, and can also improve the smoothness of the movement of the part to be transported along the first direction.

[0022] A second aspect of the present application proposes a battery production system, including the transport device proposed in the present application or any embodiment of the present application.

[0023] The battery production system of this embodiment has the same beneficial effects as the handling device proposed in this application or any embodiment of this application.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of a transport device according to some embodiments of the present application;

[0027] Figure 2 It is a schematic diagram of assembling a reference member and a mounting seat according to some embodiments of the present application;

[0028] Figure 3 Schematic diagram of reference members of some embodiments of the present application;

[0029] Figure 4 A cross-sectional view of a reference member according to some embodiments of the present application;

[0030] Figure 5 This is a schematic structural diagram of the main body of some embodiments of the present application;

[0031] Figure 6 A schematic diagram of a main body portion of some embodiments of the present application from one perspective;

[0032] Figure 7 The structure of the protection part of some embodiments of the present application is schematically shown;

[0033] Figure 8 A schematic diagram of a transport device according to some embodiments of the present application from one perspective;

[0034] Fig. 9 It is a schematic diagram of assembling the main body and the protection part of some embodiments of the present application;

[0035] Fig.10 for Fig. 9 Schematic diagram of a perspective.

[0036] The reference numerals in the specific implementation manner are as follows:

[0037] 10. Battery cells;

[0038] 100, support member; 110, mounting seat; 120, support frame;

[0039] 200, reference part; 201, limit groove;

[0040] 210, main body; 211, first side surface; 212, mounting groove; 213, bottom wall; 214, first side wall; 215, second side wall; 216, groove; 217, first end surface; 218, second end surface; 219, first notch groove;

[0041] 220, protection part; 221, embedded part; 222, main body; 223, protruding part; 224, contact surface; 225, convex strip; 226, third end surface; 227, fourth end surface; 228, second notch groove;

[0042] 300, limiting structure; 310, fastener; 320, limiting plate; 330, threaded hole;

[0043] 400, driving mechanism; 410, power assembly; 420, pushing member; 421, push rod;

[0044] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0051] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] Batteries can store electrical energy and supply power to electrical devices. With the development of new energy, the use of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.

[0054] The battery cell is the core component of the battery. The battery can include multiple battery cells. Multiple battery cells need to be stacked in a certain order in the battery box. In order to reduce the possibility of short circuits between battery cells, an isolation film will be wrapped on the outside of each battery cell. During the battery production process, the battery cells can be positioned using a handling device so that multiple battery cells can be stacked in order to improve the production efficiency of the battery. Among them, the reference part for the handling device to position the battery cell is usually a metal part with high hardness to improve the accuracy of stacking multiple battery cells, but this reference part is also easy to damage the isolation film of the battery cell.

[0055] In order to alleviate the problem of reference parts damaging battery cells and improve battery quality, the present application provides a transport device, wherein the reference part of the transport device includes a main body and a protective part, wherein the protective part is arranged on one side of the main body, and the protective part is used to contact the part to be transported, and the hardness of the protective part is less than the hardness of the main body.

[0056] The handling device of the present application has a main body with a high hardness, which can maintain the supporting strength of the main body and improve the accuracy of stacking the battery cells; the protective part is used to contact the battery cells, and the hardness of the protective part is low, which can reduce the possibility of the isolation membrane of the battery cells being damaged by the reference parts. Since the battery cells can be better protected, the quality of the processed batteries can be improved.

[0057] The handling device proposed in the present application or in the embodiments of the present application can be used to handle battery cells to stack multiple battery cells in sequence, and can also be used to handle other components of the battery, for example, for handling the electrode assembly of the battery cell, the housing of the battery cell, etc. The handling device proposed in the present application or in the embodiments of the present application can also be used to handle non-battery related components.

[0058] For the convenience of description, this embodiment is mainly described by taking the example of a transport device transporting a battery cell.

[0059] The battery includes one or more battery cells. A battery cell refers to the smallest unit that makes up the battery. Each battery cell can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery. The battery cell includes an end cap, a shell, an electrode assembly and an electrode terminal. The shell has an opening, and the end cap seals the opening of the shell. The shell cooperates with the end cap to form an internal environment of the battery cell, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The outer side of the shell can be coated with an isolation film to reduce the possibility of short circuit in the battery cell. The isolation film is generally a thin film structure, which can be called a battery blue film.

[0060] Reference Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of a transport device according to some embodiments of the present application. Figure 2 Schematic diagram of the assembly of the reference member 200 and the mounting seat 110 in some embodiments of the present application. Figure 3 This is a schematic diagram of a reference member 200 of some embodiments of the present application. This embodiment proposes a transport device, including a support member 100, a reference member 200 and a driving mechanism 400. The reference member 200 includes a main body 210 and a protective portion 220. The main body 210 is installed on the support member 100. The main body 210 extends along a first direction X. One of the two opposite sides of the main body 210 along a second direction Y is a first side surface 211. The protective portion 220 is arranged on the first side surface 211 and extends along the first direction X. The protective portion 220 is used to contact with a workpiece to be transported. The first direction X intersects with the second direction Y. The hardness of the protective portion 220 is less than the hardness of the main body 210. The driving mechanism 400 is installed on the support member 100, and is used to drive the workpiece to be transported against the protective portion 220 to move along the first direction X.

[0061] The object to be transported is an object that the transport device needs to transport. When the transport device is applied to a battery production system, the object to be transported may be a related component in the battery production process, such as a battery cell 10 .

[0062] The first direction X and the second direction Y may be substantially perpendicular to each other, and the first direction X and the second direction Y may both be horizontal directions.

[0063] The support member 100 is the installation base of the handling device, and is used to support the reference member 200 and the driving mechanism 400. The support member 100 can be a frame structure, a seat structure, or a structure combining a frame and a seat. Figure 1 As shown, the support member 100 includes a mounting seat 110 and a support frame 120, the mounting seat 110 extends along a first direction X, the mounting seat 110 is mounted on the support frame 120, the driving mechanism 400 is mounted on the support frame 120 and is located above the mounting seat 110, and the reference member 200 is mounted on one side of the mounting seat 110 along a second direction Y. Among them, the support frame 120 can be one, or a plurality of support frames 120 can be arranged at intervals along the length direction of the mounting seat 110 (which can be understood with reference to the first direction X) to improve the stability of the support member 100.

[0064] The driving mechanism 400 may include a power component 410 and a pushing member 420. One end of the pushing member 420 is connected to the power component 410, and the other end is provided with a push rod 421. The push rod 421 is used to act on the object to be transported. The power component 410 may be a linear driving component, specifically an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, etc., in which a motor cooperates with a lead screw. The push rod 421 is connected to the output end of the power component 410. The power component 410 may be extended and retracted along a first direction X to drive the push rod 421 to drive the object to be transported to move along the first direction X.

[0065] The reference member 200 may be a rod-shaped or block-shaped member, and the reference member 200 may be used to locate the relative positions of a plurality of objects to be transported in the second direction Y. For example, the handling device is used to carry a plurality of battery cells 10, so that the plurality of battery cells 10 are stacked in a straight line on a tray to form a battery module. Under the working condition, the reference member 200 is arranged in a straight line along the first direction X, and the tray is placed below the battery cells 10. Each battery cell 10 is first moved to a side of the reference member 200 where the protective portion 220 is provided, and then one of the battery cells 10 is brought into contact with the protective portion 220 of the reference member 200. When the battery cell 10 is in contact with the protective portion 220, the battery cell 10 is pushed along the first direction X to move the battery cell 10 to a corresponding position of the tray along the first direction X. Then, the next battery cell 10 is brought into contact with the protective portion 220 of the reference member 200. When the battery cell 10 is in contact with the protective portion 220, the battery cell 10 is pushed along the first direction X to move the battery cell 10 to a corresponding position of the tray along the first direction X. By analogy, all battery cells 10 of the battery module that are arranged in a straight line are moved to corresponding positions of the tray. Since each battery cell 10 always keeps in contact with the protective portion 220 of the reference member 200 when being pushed along the first direction X, the stacked battery cells 10 are aligned in the second direction Y. The positioning of the reference member 200 improves the stacking accuracy of the multiple battery cells 10 of the battery module.

[0066] The main body 210 is the main body 210 of the reference member 200, and its volume is greater than the volume of the protective part 220. Specifically, at least in the second direction Y, the minimum dimension of the main body 210 is greater than the maximum dimension of the protective part 220, that is, the minimum thickness of the main body 210 is greater than the maximum thickness of the protective part 220. In a specific implementation, in the second direction Y, the minimum dimension of the main body 210 is greater than the maximum dimension of the protective part 220, along the third direction Z, the minimum dimension of the main body 210 is greater than the maximum dimension of the protective part 220, and in the first direction X, the dimensions of the main body 210 and the protective part 220 may be consistent.

[0067] The main body 210 and the protective part 220 may be made of different materials, so that the hardness of the main body 210 is greater than that of the protective part 220. Optionally, the main body 210 may be a metal part, such as an aluminum alloy part, and the main body 210 may also be a marble part, etc.; the protective part 220 may be an organic polymer part, such as an aramid part, a PETP (polyethylene terephthalate) part, a Teflon part, etc.

[0068] It should be noted that Figure 1The driving mechanism 400 is only schematically shown, and the driving mechanism 400 may also have other structural parts not shown. The transport device of this embodiment may also include other driving devices, for example, a driving device that drives the transported object to move to contact the protection part 220, and the driving device may be a clamping mechanism, etc.

[0069] In the technical solution of the embodiment of the present application, the hardness of the main body 210 is relatively high, and the hardness of the protective part 220 is relatively low. The main body 210 can maintain the supporting strength of the main body 210, improve the accuracy of guiding and positioning the parts to be transported, and the protective part 220 is used to contact the parts to be transported, and the protective part 220 can reduce the possibility of the parts to be transported being damaged by the reference part 200. The transport device can be used to transport battery-related components. For example, the transport device can be used to transport battery cells 10. When the transport device of the embodiment of the present application is used to transport battery-related components, the damage of the reference part 200 to the battery-related components can be reduced, thereby improving the quality of the battery.

[0070] According to some embodiments of the present application, optionally, referring to Figure 3 , and combined with Figure 4 As shown, the protection portion 220 is a profile member.

[0071] Among them, profile parts refer to material parts that are processed from metal materials or non-metal materials into a certain cross-sectional shape, which have a certain supporting strength and can be plate-shaped parts, block-shaped parts, etc.

[0072] In some implementations, in order to reduce the damage of the reference part 200 to the isolation membrane of the battery cell 10, after the handling device is put into use, more than 95% of the parts in contact with the battery cell 10 can be covered with Teflon tape to protect the battery cell 10. The use of Teflon tape mainly takes into account the characteristics of Teflon such as self-lubrication, insulation, and easy operation. However, the Teflon tape itself wears quickly. After the Teflon tape is worn, the reference part 200 is still easy to damage the isolation membrane. After the Teflon tape is worn, it needs to be stopped and replaced, which is time-consuming. Not only does it consume a lot of Teflon, resulting in high costs, but it also reduces the battery production efficiency.

[0073] Different from a thin strip, the protective part 220 of this embodiment is configured as a profile part, which has a certain thickness and strength. The profile part is not easily damaged, and has improved wear resistance and durability, thereby reducing the frequency of replacing the protective part 220 and reducing production costs. It does not require frequent shutdowns, thereby improving production efficiency.

[0074] According to some embodiments of the present application, optionally, the main body 210 is a metal profile, and the protective portion 220 is an organic polymer profile.

[0075] The metal profile is a profile made of metal materials. Specifically, the main body 210 can be an aluminum alloy profile, and the main body 210 can be formed into an integral structure by casting or the like. The hardness of the main body 210 can be about 500HL (the hardness is measured in Leeb hardness).

[0076] The organic polymer profile is a profile made of organic polymer materials. Specifically, the protective part 220 can be an aramid profile, a PETP (polyethylene terephthalate) profile or a Teflon profile, and the protective part 220 can be an integrally formed structure. The hardness of the protective part 220 can be 50 to 90 HD (the hardness is measured in Shore hardness).

[0077] It should be specially noted that in the case where the protective part 220 of the present embodiment is a Teflon profile, since the protective part 220 is a profile with certain strength and thickness, compared with the method of using Teflon thin strips, the protective part 220 of the present embodiment can still reduce the replacement frequency of the protective part 220.

[0078] The main body 210 and the protection part 220 of this embodiment are easy to process, and the materials are easily available and the cost is low.

[0079] According to some embodiments of the present application, optionally, the protection portion 220 is disposed on the main body 210 in a detachable manner.

[0080] The protection portion 220 may be mounted on the main body 210 by means of snap connection, fastening with a fastener 310 , or the like.

[0081] It can be understood that the protection part 220 is detachably provided on the main body 210 , and in the event that the protection part 220 is damaged, the protection part 220 can be replaced, thereby improving the applicability of the transport device.

[0082] Reference Figure 3 , and further combined with Figures 4 to 6 As shown, Figure 4 is a cross-sectional view of a reference member 200 according to some embodiments of the present application. Figure 5 is a schematic diagram of the structure of the main body 210 in some embodiments of the present application, Figure 6 This is a schematic diagram of a perspective of the main body 210 of some embodiments of the present application. According to some embodiments of the present application, optionally, the first side 211 is provided with a mounting groove 212, and the protective portion 220 is at least partially embedded in the mounting groove 212.

[0083] The orientation of the notch of the mounting groove 212 is the same as that of the first side surface 211, both of which are toward one side of the reference member 200 along the second direction Y. The protective part 220 can be embedded in the mounting groove 212 through the notch of the mounting groove 212. The protective part 220 can be interference fit with the mounting groove 212 so that the protective part 220 can be installed on the main body 210 more stably.

[0084] The surface of the protection part 220 that is used to contact the workpiece to be transported is defined as a contact surface 224. Optionally, along the second direction Y, the contact surface 224 protrudes from the first side surface 211 or is flush with the first side surface 211, so that the workpiece to be transported is not easy to contact the main body 210 of the reference part 200, and the possibility of the workpiece to be transported being damaged by the main body 210 can be reduced.

[0085] In this embodiment, a mounting groove 212 is provided on the first side surface 211 to mount the protection portion 220 , thereby improving the assembly convenience and installation stability of the protection portion 220 and the main body 210 .

[0086] Reference Figures 3 to 6 , and further combined with Figure 7 As shown, Figure 7 This is a structural diagram of the protective portion 220 of some embodiments of the present application. According to some embodiments of the present application, optionally, the protective portion 220 includes an embedded portion 221 and a main body portion 222. The embedded portion 221 is fixedly connected to the main body portion 222. The embedded portion 221 is embedded in the mounting groove 212, and along the second direction Y, the main body portion 222 protrudes relative to the first side surface 211.

[0087] The embedded portion 221 and the main body portion 222 may be an integral structure, and the embedded portion 221 may be interference fit with the mounting groove 212 .

[0088] The main body 222 of this embodiment protrudes relative to the first side surface 211 , so that when the transported object moves toward the protection portion 220 , it is not easy to contact the main body 210 of the reference member 200 , which can reduce the possibility of the transported object being damaged by the main body 210 .

[0089] According to some embodiments of the present application, optionally, Figure 3 , 4 and Figure 7 As shown, along the third direction Z, at least one of the two opposite sides of the main body portion 222 protrudes beyond the embedded portion 221 to form a protruding portion 223, which abuts against the first side surface 211. The first direction X, the second direction Y and the third direction Z intersect each other.

[0090] The third direction Z, the first direction X, and the second direction Y may be substantially perpendicular to each other. In this embodiment, the third direction Z may be understood as a vertical direction, and the first direction X and the second direction Y may be understood as a horizontal direction.

[0091] The protrusion 223 is a part of the main body 222, and can be an integral structure with the main body 210 and the embedded part 221. The protrusion 223 abuts against the first side surface 211, which can reduce the pressure on the main body 222, and the situation where it is recessed into the installation groove 212 can reduce the possibility that the transported object is damaged by the main body 210. In addition, through the protrusion 223, the extension width of the main body 222 along the third direction Z is greater than the extension width of the embedded part 221 along the third direction Z. The extension width of the main body 222 along the third direction Z is larger, which can increase the contact surface 224 area between the transported object and the protective part 220. The extension width of the embedded part 221 along the third direction Z is smaller, which improves the convenience of embedding the embedded part 221 into the installation groove 212.

[0092] like Figures 3 to 7 As shown, according to some embodiments of the present application, optionally, the main body 210 includes a bottom wall 213, a first side wall 214 and a second side wall 215 surrounding a mounting groove 212, the orientation of the notch of the mounting groove 212 is consistent with the orientation of the first side surface 211, the notch of the bottom wall 213 and the mounting groove 212 are opposite and spaced apart along the second direction Y, the first side wall 214 and the second side wall 215 are spaced apart along the third direction Z, the first side wall 214 and the second side wall 215 both extend along the first direction X, the first side wall 214 and the second side wall 215 both have grooves 216, and the embedded portion 221 is provided with convex strips 225 on both sides along the third direction Z, and the convex strips 225 are provided in the grooves 216 on the corresponding sides.

[0093] The groove 216 of the first side wall 214 may be formed by a local position of the first side wall 214 being recessed toward a side away from the mounting groove 212, and the groove 216 of the second side wall 215 may be formed by a local position of the second side wall 215 being recessed toward a side away from the mounting groove 212. A convex strip 225 is provided on a side of the embedded portion 221 corresponding to the first side wall 214, and the convex strip 225 can be inserted into the groove 216 of the first side wall 214. A convex strip 225 is provided on a side of the embedded portion 221 corresponding to the second side wall 215, and the convex strip 225 can be inserted into the groove 216 of the second side wall 215.

[0094] Optionally, along the second direction Y, the groove 216 of the first side wall 214 may be disposed at an end of the first side wall 214 corresponding to the bottom wall 213 , and the groove 216 of the second side wall 215 may be disposed at an end of the second side wall 215 corresponding to the bottom wall 213 .

[0095] During the process of assembling the protection part 220 to the main body 210, the embedded part 221 can be squeezed to make the embedded part 221 enter the installation groove 212, and when the convex strip 225 moves to the corresponding groove 216 position, it can rebound into the corresponding groove 216. During the process of assembling the protection part 220 to the main body 210, the protection part 220 can also be firstly subjected to cold treatment to make the protection part 220 shrink due to the cold, and in this state, the embedded part 221 is inserted into the installation groove 212, and after the protection part 220 returns to room temperature, the convex strip 225 can rebound into the corresponding groove 216.

[0096] In this embodiment, the convex strip 225 on the embedding portion 221 cooperates with the groove 216 on the main body 210 to improve the connection stability between the protection portion 220 and the main body 210 .

[0097] According to some embodiments of the present application, optionally, along the first direction X, the protection portion 220 extends from one end of the main body 210 to the other end of the main body 210 .

[0098] That is, in the first direction X, one end of the protection portion 220 is substantially flush with one end of the main body 210 , and the other end of the protection portion 220 is substantially flush with one end of the main body 210 .

[0099] In this embodiment, by setting the extension length of the protection part 220 to be substantially the same as the extension length of the main body 210, the reference part 200 is more aesthetically pleasing, and any position of the reference part 200 along the first direction X is basically protected by the protection part 220, which can improve the application range of the reference part 200 and reduce the damage of the reference part 200 to the transported parts.

[0100] According to some embodiments of the present application, optionally, referring to Figure 3 , and combined with Figure 8 As shown, Figure 8 This is a schematic diagram of a transport device from one perspective of some embodiments of the present application. The transport device also includes a limiting structure 300. The main body 210 and the protective part 220 are respectively connected to the limiting structure 300. The limiting structure 300 is used to limit the relative movement of the protective part 220 and the main body 210 along the first direction X.

[0101] The limiting structure 300 may be fixedly connected to both the protection part 220 and the main body 210. Specifically, the limiting structure 300 may be connected to both the protection part 220 and the main body 210 by screws. The fastening action of the screws prevents the protection part 220 from sliding relative to the main body 210 along the first direction X. The limiting structure 300 may be disposed at the end of the reference member 200 along the first direction X, or may be disposed at a position between the ends of the reference member 200 along the first direction X. The limiting structure 300 may be one or more.

[0102] The transport device of this embodiment can improve the stability of the connection between the protection part 220 and the main body 210 by providing the limiting structure 300 .

[0103] According to some embodiments of the present application, optionally, Figure 3 and Figure 8 As shown, along the first direction X, the end faces of the main body 210 are respectively the first end face 217 and the second end face 218, the end faces of the protective portion 220 are respectively the third end face 226 and the fourth end face 227, the first end face 217 and the third end face 226 are located at the same end, the second end face 218 and the fourth end face 227 are located at the same end, and the limiting structure 300 is respectively connected between the first end face 217 and the third end face 226 and between the second end face 218 and the fourth end face 227.

[0104] For ease of description, the limiting structure 300 disposed on the first end surface 217 is defined as a first limiting structure 300, and the limiting structure 300 disposed on the second end surface 218 is defined as a second limiting structure 300. The first limiting structure 300 can be fixedly connected to both the first end surface 217 and the third end surface 226, or can be abutted. The second limiting structure 300 can be fixedly connected to both the second end surface 218 and the fourth end surface 227, or can be abutted.

[0105] Along the first direction X, the two ends of the reference member 200 are respectively provided with limiting structures 300, which can improve the stability of the relative fixation of the protection part 220 and the main body 210 along the first direction X, and reduce the possibility of the protection part 220 sliding relative to the main body 210 along the first direction X. At the same time, the limiting structure 300 is arranged on the end surfaces of the main body 210 and the protection part 220, so that the limiting structure 300 can be assembled more conveniently, and the contact surface 224 of the protection part 220 and the limiting structure 300 are located at different positions of the reference member 200, and the limiting structure 300 can avoid the workpiece to be transported.

[0106] According to some embodiments of the present application, optionally, Figure 3 and Figure 8 As shown, the limiting structure 300 includes a limiting plate 320 and a fastener 310. The limiting structure 300 arranged on the first end face 217 is the first limiting structure 300. The limiting plate 320 of the first limiting structure 300 is fixedly connected to the main body 210 through the fastener 310 and the limiting plate 320 is pressed against the first end face 217 and the third end face 226. The limiting structure 300 arranged on the second end face 218 is the second limiting structure 300. The limiting plate 320 of the second limiting structure 300 is fixedly connected to the main body 210 through the fastener 310 and the limiting plate 320 is pressed against the second end face 218 and the fourth end face 227.

[0107] The fastener 310 may be a bolt or a screw, etc., and a through hole may be provided on the limiting plate 320. The fastener 310 passes through the through hole on the limiting plate 320 of the first limiting structure 300 and is fixedly connected to the first end face 217. Specifically, the first end face 217 may be provided with a threaded hole 330, and the fastener 310 is threadedly connected to the threaded hole 330; the fastener 310 passes through the through hole on the limiting plate 320 of the second limiting structure 300 and is fixedly connected to the second end face 218. Specifically, the second end face 218 may be provided with a threaded hole 330, and the fastener 310 is threadedly connected to the threaded hole 330.

[0108] In the handling device of this embodiment, the fastener 310 is connected to the main body 210 to fix the limiting plate 320. The main body 210 has a high hardness and is not easily damaged, and the connection stability is high. The limiting plate 320 is fixed by the fastener 310, and the structure is simple. Both ends of the main body 210 and the protective part 220 are limited by the limiting plate 320, which reduces the possibility of the protective part 220 moving relative to the main body 210 along the first direction X.

[0109] Reference Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , and combined with Fig. 9 and Fig.10 As shown, Fig. 9 Schematic diagram of the assembly of the main body 210 and the protection part 220 in some embodiments of the present application, wherein: Fig. 9 The limiting structure 300 is omitted. Fig.10 for Fig. 9 A schematic diagram from a perspective, according to some embodiments of the present application, optionally, the first end face 217 and the second end face 218 are both provided with a first notch groove 219, the third end face 226 and the fourth end face 227 are both provided with a second notch groove 228, the first notch groove 219 of the first end face 217 and the second notch groove 228 of the third end face 226 are matched to form a limiting groove 201, the first notch groove 219 of the second end face 218 and the second notch groove 228 of the fourth end face 227 are matched to form a limiting groove 201, and the limiting plate 320 is arranged in the limiting groove 201 at the corresponding end.

[0110] The first notch groove 219 of the first end face 217 and the second notch groove 228 of the third end face 226 form a limiting groove 201 for setting a first limiting structure 300. The limiting plate 320 of the first limiting structure 300 is set in the limiting groove 201 at this end, and the limiting plate 320 presses against the groove bottom surface of the first notch groove 219 and the groove bottom surface of the second notch groove 228. The first notch groove 219 of the second end face 218 and the second notch groove 228 of the fourth end face 227 form a limiting groove 201 for setting a second limiting structure 300. The limiting plate 320 of the second limiting structure 300 is set in the limiting groove 201 at this end, and the limiting plate 320 presses against the groove bottom surface of the first notch groove 219 and the groove bottom surface of the second notch groove 228.

[0111] It can be understood that this embodiment can locate the installation position of the limit plate 320 by setting the limit groove 201, thereby improving the installation stability of the limit plate 320; at the same time, the limit groove 201 can accommodate the limit plate 320, so that the limit plate 320 of the first limit structure 300 does not protrude from the first side surface 211 and the third surface, and the limit plate 320 of the second limit structure 300 does not protrude from the second surface and the fourth surface, and the structure is neater. In the working condition where multiple reference parts 200 are used and multiple reference parts 200 are docked along the first direction X, adjacent reference parts 200 are docked end to end, and the docking flatness is better.

[0112] Optionally, the through hole of the limiting plate 320 and the fastener 310 can be set as a countersunk hole, so that the limiting plate 320 and the fastener 310 do not protrude from the corresponding end surface of the reference member 200.

[0113] According to some embodiments of the present application, optionally, the friction coefficient of the surface of the protective portion 220 in contact with the object to be transported is less than 0.3; and / or the roughness of the surface of the protective portion 220 in contact with the object to be transported is less than 2.5 μm (micrometer).

[0114] In some implementations, the friction coefficient of the contact surface 224 of the protection part 220 is less than 0.3, and specifically can be about 0.25, about 0.2, or about 0.1. The small friction coefficient of the contact surface 224 can reduce the resistance of the object to be transported on the protection part 220 to move along the first direction X, reduce the wear of the object to be transported on the protection part, and at the same time reduce the damage of the protection part 220 to the object to be transported, and can also improve the smoothness of the movement of the object to be transported along the first direction X.

[0115] In some implementations, the roughness of the contact surface 224 of the protection part 220 is less than 2.5 μm, specifically about 2 μm or about 1 μm. The relatively small roughness of the contact surface 224 can reduce the resistance of the object to be transported on the protection part 220 to move along the first direction X, reduce the wear of the object to be transported on the protection part, and at the same time, reduce the damage of the protection part 220 to the object to be transported, and can also improve the smoothness of the movement of the object to be transported along the first direction X.

[0116] An embodiment of the present application also provides a battery production system, including the transport device proposed in the present application or any embodiment of the present application.

[0117] The transport device can be used in the assembly process of the battery module, specifically, it can be used to transport the battery cells 10 . The transport device can also be used to transport other battery-related components.

[0118] The battery production system also includes other equipment for completing the corresponding battery production process, for example, production equipment for battery cells 10, assembly equipment for battery modules, etc.

[0119] The battery production system of this embodiment has the same beneficial effects as the handling device proposed in this application or any embodiment of this application.

[0120] like Figures 1 to 10 As shown, this embodiment provides a transport device, including a support member 100, a reference member 200 and a driving mechanism 400, the support member 100 includes a mounting seat 110 and a support frame 120, the mounting seat 110 extends along a first direction X, the mounting seat 110 is installed on the support frame 120, the driving mechanism 400 is used to drive the to-be-transported member abutting against the protective portion 220 to move along the first direction X, the driving mechanism 400 is installed on the support frame 120 and is located above the mounting seat 110, and the reference member 200 is installed on one side of the mounting seat 110 along the second direction Y.

[0121] The reference member 200 includes a main body 210 and a protective part 220. The main body 210 is mounted on the support member 100. The main body 210 extends along a first direction X. One of the two opposite sides of the main body 210 along a second direction Y is a first side surface 211. The protective part 220 is disposed on the first side surface 211 and extends along the first direction X. The protective part 220 is used to contact with the workpiece to be transported. The first direction X intersects with the second direction Y. The hardness of the protective part 220 is less than the hardness of the main body 210. The main body 210 is a metal profile, and the protective part 220 is an organic polymer profile. The friction coefficient of the surface of the protective part 220 in contact with the workpiece to be transported is less than 0.3, and the roughness of the surface of the protective part 220 in contact with the workpiece to be transported is less than 2.5 μm.

[0122] The first side surface 211 is provided with a mounting groove 212, and the protective portion 220 includes an embedded portion 221 and a main body portion 222. The embedded portion 221 is fixedly connected to the main body portion 222. The embedded portion 221 is embedded in the mounting groove 212. Along the second direction Y, the main body portion 222 protrudes relative to the first side surface 211. The main body 210 includes a bottom wall 213, a first side wall 214, and a second side wall 215 surrounding the mounting groove 212. The orientation of the notch of the mounting groove 212 is consistent with the orientation of the first side surface 211. The bottom wall 213 and the notch of the mounting groove 212 are opposite and spaced apart along the second direction Y. The first side wall 214 and the second side wall 215 are spaced apart along the third direction Z. The first side wall 214 and the second side wall 215 both extend along the first direction X. The first side wall 214 and the second side wall 215 are both provided with a groove 216. The embedded portion 221 is provided with convex strips 225 on both sides along the third direction Z. The convex strips 225 are provided in the grooves 216 on the corresponding sides. Along the third direction Z, at least one of the two opposite sides of the main body 222 protrudes beyond the embedded portion 221 and forms a protruding portion 223. The protruding portion 223 abuts against the first side surface 211. The first direction X, the second direction Y, and the third direction Z intersect each other. The protection portion 220 and the main body 210 can be detachably separated.

[0123] Along the first direction X, the protection part 220 extends from one end of the main body 210 to the other end of the main body 210. The reference member 200 further includes a limiting structure 300. Along the first direction X, the end faces of the main body 210 are respectively the first end face 217 and the second end face 218, and the end faces of the protection part 220 are respectively the third end face 226 and the fourth end face 227. The first end face 217 and the third end face 226 are located at the same end, and the second end face 218 and the fourth end face 227 are located at the same end. The limiting structure 300 is connected between the first end face 217 and the third end face 226 and between the second end face 218 and the fourth end face 227. The limiting structure 300 includes a limiting plate 320 and a fastener 310. The limiting structure 300 arranged on the first end face 217 is the first limiting structure 300. The limiting plate 320 of the first limiting structure 300 is fixedly connected to the main body 210 through the fastener 310 and the limiting plate 320 is pressed against the first end face 217 and the third end face 226. The limiting structure 300 arranged on the second end face 218 is the second limiting structure 300. The limiting plate 320 of the second limiting structure 300 is fixedly connected to the main body 210 through the fastener 310 and the limiting plate 320 is pressed against the second end face 218 and the fourth end face 227. The first end face 217 and the second end face 218 are both provided with a first notch groove 219, the third end face 226 and the fourth end face 227 are both provided with a second notch groove 228, the first notch groove 219 of the first end face 217 and the second notch groove 228 of the third end face 226 are matched to form a limiting groove 201, the first notch groove 219 of the second end face 218 and the second notch groove 228 of the fourth end face 227 are matched to form a limiting groove 201, and the limiting plate 320 is set in the limiting groove 201 at the corresponding end.

[0124] In the handling device of this embodiment, the main body 210 ensures that the overall reference part 200 does not deform and the dimensional accuracy meets the requirements; the protective part 220 has a low hardness and will not cause damage to the handle (such as the blue film of the battery cell 10), thereby improving the durability of the reference part 200 and ensuring product quality.

[0125] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A transport device, characterized in that: include: Supports; A reference member, the reference member comprises a main body and a protective part, the main body is mounted on the support member, the main body extends along a first direction, one of two sides of the main body opposite to each other along a second direction is a first side surface, the protective part is arranged on the first side surface and extends along the first direction, the protective part is used to contact with the workpiece to be transported, the first direction intersects with the second direction, and the hardness of the protective part is less than the hardness of the main body; The driving mechanism is installed on the supporting member and is used for driving the object to be transported leaning against the protecting portion to move along the first direction.

2. The transport device according to claim 1, characterized in that: The protection part is a profile piece.

3. The transport device according to claim 2, characterized in that: The main body is a metal profile, and the protection part is an organic polymer profile.

4. The transport device according to claim 1, characterized in that: The protection part is detachably arranged on the main body part.

5. The transport device according to claim 1, characterized in that: The first side surface is provided with a mounting groove, and the protection portion is at least partially embedded in the mounting groove.

6. The transport device according to claim 5, characterized in that: The protection part includes an embedding part and a main body part. The embedding part is fixedly connected to the main body part. The embedding part is embedded in the installation groove. Along the second direction, the main body part protrudes relative to the first side surface.

7. The transport device according to claim 6, characterized in that: Along the third direction, at least one of the two opposite sides of the main body protrudes beyond the embedded portion to form a protruding portion, and the protruding portion abuts against the first side surface. The first direction, the second direction and the third direction intersect each other.

8. The transport device according to claim 6, characterized in that: The main body includes a bottom wall, a first side wall and a second side wall surrounding the installation groove, the orientation of the notch of the installation groove is consistent with the orientation of the first side surface, the bottom wall and the notch of the installation groove are opposite to and spaced apart along the second direction, the first side wall and the second side wall are spaced apart along the third direction, the first side wall and the second side wall both extend along the first direction, the first side wall and the second side wall are both provided with grooves, and the embedded portion is provided with convex strips on both sides along the third direction, and the convex strips are provided in the grooves on the corresponding sides.

9. The transport device according to any one of claims 1 to 8, characterized in that: Along the first direction, the protection portion extends from one end of the main body portion to the other end of the main body portion.

10. The transport device according to claim 9, characterized in that: The reference member further includes a limiting structure, the main body and the protective part are respectively connected to the limiting structure, and the limiting structure is used to limit the relative movement of the protective part and the main body along the first direction.

11. The transport device according to claim 10, characterized in that: Along the first direction, the end faces of the main body are respectively the first end face and the second end face, the end faces of the protective part are respectively the third end face and the fourth end face, the first end face and the third end face are located at the same end, the second end face and the fourth end face are located at the same end, and the limiting structure is respectively connected between the first end face and the third end face and between the second end face and the fourth end face.

12. The transport device according to claim 11, characterized in that: The limiting structure includes a limiting plate and a fastener. The limiting structure arranged on the first end face is a first limiting structure, the limiting plate of the first limiting structure is fixedly connected to the main body through the fastener, and the limiting plate is pressed against the first end face and the third end face, and the limiting structure arranged on the second end face is a second limiting structure, the limiting plate of the second limiting structure is fixedly connected to the main body through the fastener, and the limiting plate is pressed against the second end face and the fourth end face.

13. The transport device according to claim 12, characterized in that: The first end face and the second end face are both provided with a first notch groove, the third end face and the fourth end face are both provided with a second notch groove, the first notch groove of the first end face and the second notch groove of the third end face are matched to form a limiting groove, the first notch groove of the second end face and the second notch groove of the fourth end face are matched to form a limiting groove, and the limiting plate is arranged in the limiting groove at the corresponding end.

14. The transport device according to any one of claims 1 to 8, characterized in that: The friction coefficient of the surface of the protective part in contact with the object to be transported is less than 0.3; And / or, the roughness of the surface of the protection portion in contact with the object to be transported is less than 2.5 μm.

15. A battery production system, characterized in that: The invention comprises the transport device according to any one of claims 1 to 14.

Images