WO2023061369A1

WO2023061369A1 - Device for assembling battery assembly

Info

Publication number: WO2023061369A1
Application number: PCT/CN2022/124642
Authority: WO
Inventors: 吴译晨; 肖青林; 谢祯兴; 周文林; 杨丽美; 刘晓梅
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2021-10-14
Filing date: 2022-10-11
Publication date: 2023-04-20
Also published as: CN216213619U

Abstract

The present application provides a device for assembling a battery assembly. The battery assembly comprises an electrode assembly and a housing, the electrode assembly being a winding type electrode assembly. The device comprises: a rack, the rack being provided with a housing fixing mechanism, and the housing fixing mechanism being used for fixing the housing; and an electrode assembly lead-in port, the electrode assembly lead-in port corresponding to an opening of the housing fixed by the housing fixing mechanism, and at least one side wall of the inner wall of the electrode assembly lead-in port being provided with a rolling member.

Description

A kind of equipment for battery pack assembly

This application claims the priority of the Chinese patent application 202122475133.2 entitled "An Equipment for Assembly of Battery Modules" filed on October 14, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of battery assembly, and in particular to an assembly equipment that can facilitate the insertion of electrode assemblies into the case.

Background technique

At present, environmental and energy issues have made social progress face a severe situation, and low-carbon environmental protection has become a major theme of future economic development. The storage and efficient utilization of energy has attracted attention from all aspects, and lithium-ion battery cells exist as the smallest unit of energy storage. Energy conservation and emission reduction is the key to the sustainable development of the automobile industry, and electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development. A battery is a structural form in which multiple battery components are effectively connected, and a certain number of battery components are connected in series/parallel/series-parallel to meet the demand for power supply for electrical equipment. During the production, transportation, and packaging of the battery assembly, the battery assembly's electrode assembly needs to be assembled into the housing to complete the assembly of the battery assembly. How the electrode assembly can be packed into the casing without damage also constitutes a new problem.

technical problem

The technical problem to be solved in this application is to provide a device for assembling battery components, which solves the problem in the prior art that the electrode components are frequently damaged due to the lack of equipment for entering the case.

technical solution

This application is achieved in the following way: a battery assembly assembly equipment, the battery assembly includes an electrode assembly and a casing, the electrode assembly is a wound electrode assembly, including:

Frame, the frame is provided with a housing fixing mechanism, the housing fixing mechanism is used to fix the housing; the electrode assembly inlet, the electrode assembly inlet corresponds to the opening of the housing fixed by the housing fixing mechanism, and the electrode assembly inlet At least one side wall of the inner wall is provided with rolling elements.

In one aspect of the present application, the rolling axis of the rolling element is parallel to the side wall of the electrode assembly introduction port where it is located, and perpendicular to the introduction direction of the electrode assembly. The rolling member is set to include a rolling shaft, and when the rolling shaft rolls, it can guide the electrode assembly to move along the introduction surface. The above arrangement makes the introduction of the electrode assembly more convenient.

In one aspect of the present application, rolling elements are provided on the opposite side walls of the inner wall of the electrode assembly inlet. The rolling parts are arranged on both sides of the wall, so that the friction force on both sides of the electrode assembly can be changed from sliding friction to rolling friction. Both sides of the surface are compressed to reduce the cross-sectional area of the originally fluffy electrode assembly, further reducing the possibility of scratches.

In one aspect of the present application, the electrode assembly introduction port is provided with a side wall of the rolling element and a side wall opposite to it, and the contact surface with the electrode assembly is the electrode assembly introduction surface, and the electrode assembly introduction surface is located on the inner wall of the corresponding housing The inner side of the electrode assembly, or the electrode assembly introduction surface extends into the opening of the casing. The electrode assembly introduction surface is arranged on the inner side of the inner wall of the casing, so that the electrode assembly can enter along the electrode assembly introduction surface during introduction, thereby avoiding contact with the inner wall of the casing, thereby reducing the possibility of contact between the electrode assembly and the inner wall of the casing, thereby Avoid scratching the electrode assembly and the inner wall of the casing.

In one aspect of the present application, the contact surfaces of the electrode assembly inlet and the electrode assembly are located inside the inner wall of the casing. By positioning the contact surfaces of the electrode assembly inlet and the electrode assembly inside the inner wall of the casing, the position of the electrode assembly can be further restricted, and scratches between the electrode assembly and the inner wall of the casing can be further avoided.

In one aspect of the present application, the rolling element is disposed on the side wall of the electrode assembly inlet corresponding to the long side of the electrode assembly. The deformation of the long side is larger, so setting the electrode assembly inlet has a stronger demand for pressing the long side, and pressing the long side can achieve the effect of avoiding scratches.

In one aspect of the present application, the rolling elements are rollers, pulleys or balls. Using rollers, pulleys or balls can provide rolling friction, which can make the electrode assembly enter the shell more smoothly.

In one aspect of the present application, the radius of the rolling element gradually decreases along the direction of introducing the electrode assembly. The leading direction of the radius of the rolling element shrinks sequentially, so that the rolling element that contacts the electrode assembly first is a rolling element with a larger radius, and a rolling element with a larger radius means that a larger position error of the electrode assembly can be tolerated, so the rolling element's The sequential contraction of the radius leading direction can reduce the material cost of the rolling element under the premise of ensuring the correction error.

In one aspect of the present application, the width of the electrode assembly introduction port between the side wall provided with the rolling member and the opposite side wall gradually decreases along the introduction direction of the electrode assembly. The sequential reduction of the electrode assembly inlet can allow greater error at the upper end of the electrode assembly inlet, and after the lower end is reduced, the accurate entry of the electrode assembly into the shell can be ensured.

In one aspect of the present application, the shell fixing mechanism is provided with a shell shaping component, which is used to apply force to the shell side wall to shape the shell side wall into a preset shape. Due to the characteristics of the material of the shell, the distance between the side walls of the shell may fluctuate. The side walls of the shell can be leveled by the shell-shaped component, which can improve the flatness of the shell and ultimately improve the product quality of the battery assembly. .

In one aspect of the present application, the casing shaping assembly is arranged at or near the casing opening, and is used for exerting force on the side wall at or near the casing opening. The deformation of the side wall at the opening of the shell is the largest, and it is more effective to reshape the side wall of the shell here, and it is easier to apply force.

In one aspect of the present application, the housing shaping assembly includes a suction cup for being adsorbed on the side wall of the housing, or a propping member for abutting against the side wall of the housing, or a shaping member for pressing against the side wall of the housing. pole. The suction cup can be adsorbed on the shell and is suitable for pulling or pushing. The abutting piece is used for applying pressure, and the shaping rod is used for applying pressure. The shell shaping components mentioned above can achieve the effect of flattening and shaping the shell.

In one aspect of the present application, the housing shaping assembly is arranged on the side wall of the housing where the long side of the housing is located, and is used to apply force to the side wall of the housing where the long side of the housing is located. Due to the characteristics of the material, the deformation of the long side of the casing is larger, so setting the electrode assembly inlet has a stronger demand for shaping the long side, and shaping the long side can better achieve the effect of avoiding scratches.

In one aspect of the present application, the housing fixing mechanism includes:

Rack side brackets arranged opposite to each other; shell brackets, the shell brackets are used to support the shell, and are adjustable and liftable with the rack side brackets. By designing the brackets on both sides, the structure of the rack can be made relatively simple. At the same time, the housing support is provided for lifting, so that the rack can adapt to shells of different heights. By adjusting the distance between the brackets, the rack can adapt Compatible with battery packs of different widths.

In one aspect of the present application, the electrode assembly inlet is fixed on the upper part of the frame. The battery component inlet can be set separately from the housing fixing part, or it can be integrated and fixed on the upper part of the frame. The advantage of this setting is that it does not need to be debugged, and the electrode component inlet can be used all the time when it is fixed facing the housing, which is convenient for maintenance.

In one aspect of the present application, the electrode assembly inlet is detachably connected to the upper part of the frame. The inlet of the electrode assembly is designed to be detachably connected to the upper part of the frame, making the overall structure more flexible, easy to carry after disassembly, and easy to disassemble and clean.

The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable , the following specifically cites the specific implementation manner of the present application.

Beneficial effect

Through the above solution, the shell fixing mechanism can fix the shell first, and then set a special inlet to align with the shell fixing mechanism, which can make it easier to find the position during the assembly process of the electrode assembly without deviation. At the same time, a rolling member is installed on the inner wall of the inlet, which can change the friction force of the electrode assembly into the shell from sliding friction to rolling friction, greatly reducing the possibility of damage to the electrode assembly during assembly into the shell. . At the same time, as a part with a certain hardness, the rolling element can also compress the surface of the electrode assembly, reduce the cross-sectional area of the originally fluffy electrode assembly, and further reduce the possibility of scratches.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the application. Also, the same reference numerals are used to denote the same components throughout the drawings. In the attached picture:

Fig. 1 is a perspective view of the battery module assembly equipment described in a specific embodiment of the present application;

Fig. 2 is a schematic cross-sectional view of the battery module assembly equipment described in a specific embodiment of the present application;

Fig. 3 is a schematic diagram of the structure of the inlet of the electrode assembly described in a specific embodiment of the present application;

Fig. 4 is a partial enlarged view of the structure of the inlet of the electrode assembly described in a specific embodiment of the present application;

FIG. 5 is a schematic diagram of a housing fixing mechanism described in a specific embodiment of the present application.

Explanation of reference signs:

1. Electrode assembly; 2. Shell; 3. Rack; 31. Introduction port; 311. Rolling parts; 32. Shell fixing mechanism; 321. Side bracket; 322. Shell support; 33. Shell shaping component .

Embodiments of the present invention

Embodiments of the technical solutions of the present application will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present application more clearly, and therefore are only examples, rather than limiting the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the application; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to To limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the description of the above drawings are intended to cover a non-exclusive inclusion.

In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and should not be understood as indicating or implying relative importance or implicitly indicating the number, specificity, or specificity of the indicated technical features. Sequence or primary-secondary relationship. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specifically defined.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiment of the present application, the term "and/or" is only a kind of association relationship describing associated objects, which means that there may be three kinds of relationships, such as A and/or B, which may mean: A exists alone, and A exists at the same time and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to two or more groups (including two), and "multiple pieces" refers to More than two pieces (including two pieces).

In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical" "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "Radial", "Circumferential", etc. indicate the orientation or positional relationship based on the drawings Orientation or positional relationship is only for the convenience of describing the embodiment of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as an implementation of the present application. Example limitations.

In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a fixed connection. Disassembled connection, or integration; it can also be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

At present, judging from the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.

The applicant noticed that there is a guide device for pushing the battery into the case in the prior art, but the electrode assembly is completed by winding the electrode sheet, and the structure of the electrode assembly is fluffy. Due to the problems of materials and molding structure, there is a certain wave structure on the edge of the shell, and the distance between the two side walls fluctuates at the same horizontal height. Therefore, when the electrode assembly is put into the shell, there is a large friction force with the battery shell mouth and the shell wall, and the thrust force is relatively large when the electrode assembly is put into the shell. The plate is misaligned, and there is a risk of short circuit.

The battery assembly disclosed in the embodiments of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited to. The power supply system of the power-consuming device can be composed of the battery assembly and batteries disclosed in this application.

The embodiment of the present application provides an electric device using a battery as a power source. The electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.

The applicant of the present application has further realized that if there is a device for assisting the electrode assembly in the case to reduce the friction force and the deformation of the case, the success rate of the battery assembly in the case can be improved.

Here, please refer to FIG. 1 and FIG. 2 , which respectively show a perspective view and a schematic longitudinal sectional view of a device for assembling battery components of the present application. The battery assembly includes an electrode assembly 1 and a casing 2, the electrode assembly 1 is a wound electrode assembly 1, and includes: a frame 3, the frame 3 is provided with a casing fixing mechanism 32, and the casing fixing mechanism 32 is used to fix the casing 2 Electrode assembly inlet 31, the electrode assembly inlet 31 corresponds to the opening of the housing 2 fixed by the housing fixing mechanism 32, and at least one side wall of the inner wall of the electrode assembly inlet 31 is provided with a rolling member 311.

The frame 3 here is a general term for the overall structure, and its main function is to support the shell 2 .

The housing fixing mechanism 32 on the frame 3 can be separated from the electrode assembly inlet 31, and the electrode assembly inlet 31 exists as a separate part, or the housing fixing mechanism 32 can be separated from the electrode assembly as shown in Figure 1 or 2 The introduction port 31 is integrally formed, and the electrode assembly introduction port 31 is a square part above the casing fixing mechanism, and there may not even be a clear dividing line between the two.

The electrode assembly inlet 31 is used to receive and guide the electrode assembly 1 , the electrode assembly 1 can be a coiled cell, or a cell with a top cover assembled by welding. Assembling the electrode assembly inlet 31 corresponds to the preset position of the housing 2 to be fixed by the housing fixing mechanism 32. As shown in Figure 1, the electrode assembly inlet 31 is arranged above the housing 2 to be fixed. The fixing mechanism 32 is arranged below the housing 2 . The housing fixing mechanism 32 in the figure is a limiting plate adapted to the bottom of the housing 2 . The limiting plate has a limiting groove adapted to the bottom of the housing 2 .

The rolling member 311 is a component capable of generating rolling friction, and is used to contact the electrode assembly 1 and provide rolling friction for its movement.

Through the above solution, the housing fixing mechanism 32 can first fix the housing 2, and then align the housing fixing mechanism 32 through the above-mentioned electrode assembly inlet 31, which can make it easier to find the position of the electrode assembly 1 during the assembly process, without will be offset. At the same time, a rolling member 311 is provided on the inner wall of the inlet 31, so that the friction force received by the electrode assembly 1 when it is assembled into the housing 2 is changed from sliding friction to rolling friction. The direction is roughly aligned with the electrode assembly introduction port 31 , and one side thereof abuts against the rolling element 311 , and with the help of the rolling element 311 , it can smoothly enter the interior of the casing 2 . The possibility of damage to the electrode assembly 1 during assembly into the case is greatly reduced. On the other hand, the rolling member 311 is a part with a certain hardness. After the rolling member 311 abuts against the electrode assembly 1, it can also apply force to the surface of the electrode assembly 1 to reduce the cross-sectional area of the originally fluffy electrode assembly 1. , to further reduce the possibility of scratches.

In some other embodiments, the rolling axis of the rolling member 311 is parallel to the side wall of the electrode assembly introduction port 31 where it is located, and perpendicular to the introduction direction of the electrode assembly 1 . As shown in FIG. 1 , the rolling axis of the rolling member 311 is in the outward direction perpendicular to the paper surface, the side wall of the electrode assembly inlet 31 extends vertically, and the electrode assembly 1 is introduced vertically downward. In the above solution, the rolling member 311 is configured to include a rolling shaft, and when the rolling shaft rolls, the electrode assembly 1 can be guided to move along the introduction surface, which is a surface formed by connecting the rolling member 311 with the contact of the electrode assembly 1 . The above arrangement makes the introduction of the electrode assembly 1 more convenient.

In some other embodiments, as shown in FIG. 1 , rolling elements 311 are provided on opposite side walls of the inner wall of the electrode assembly inlet 31 . The two side walls are provided with rolling elements 311 for the left and right side walls in the figure. By arranging the rolling parts 311 on both side walls, the friction force received by the electrode assembly on both sides of the casing 2 can be changed from sliding friction to rolling friction. At the same time, the rolling parts 311, as parts with a certain hardness, can Both sides of the surface of the electrode assembly 1 are compressed to reduce the cross-sectional area of the originally fluffy electrode assembly 1 and further reduce the possibility of scratches.

In some other embodiments, the electrode assembly introduction port 31 is provided with a side wall of the rolling member 311 and a side wall opposite to it, and the contact surface with the electrode assembly 1 is the introduction surface of the electrode assembly 1, and the introduction surface of the electrode assembly 1 is located next to it. The inner side of the inner wall of the corresponding casing 2 , or the introduction surface of the electrode assembly 1 extends into the opening of the casing 2 . For example, in some embodiments, the introduction surface of the electrode assembly 1 is set on the inner side of the inner wall of the housing 2, so that the electrode assembly 1 can enter along the introduction surface of the electrode assembly 1 when it is introduced, thereby avoiding contact with the inner wall of the housing 2. In some embodiments, the introduction surface of the electrode assembly 1 is inclined, the upper end of the introduction surface of the electrode assembly 1 is wider than the inner wall of the housing 2 , and the lower end of the introduction surface of the electrode assembly 1 is narrower than the inner wall of the housing 2 . The arrangement of the introduction surface of the electrode assembly 1 can gradually guide the electrode assembly 1 into the inner side of the casing 2 . The possibility of contacting the electrode assembly 1 with the inner wall of the casing 2 can be reduced, thereby avoiding scratches on the electrode assembly 1 and the inner wall of the casing 2 .

In one embodiment of the present application, as shown in FIG. 1 , the contact surfaces of the electrode assembly inlet 31 and the electrode assembly 1 are all located inside the inner wall of the casing 2 . The electrode assembly inlet 31 is located inside the inner wall of the housing 2 as a whole, indicating that the electrode assembly 1 is already located inside the inner wall of the housing 2 when it enters the electrode assembly inlet 31 . This setting can further limit the position of the electrode assembly 1 and further avoid scratching of the electrode assembly 1 and the inner wall of the casing 2 by positioning the contact surfaces of the electrode assembly inlet 31 and the electrode assembly 1 inside the inner wall of the casing 2 .

In one aspect of the present application, the rolling member 311 is disposed on the side wall of the electrode assembly inlet 31 corresponding to the long side of the electrode assembly 1 . In FIG. 1 , the long side of the electrode assembly 1 is the front and rear sides in the figure. In FIG. 2 , the long side direction of the electrode assembly 1 is parallel to the direction of the paper. In the case where the electrode assembly 1 is wound, the deformation of the long side is larger, so setting the electrode assembly inlet 31 has a stronger demand for pressing the long side, and pressing the long side can achieve the effect of avoiding scratches.

In one aspect of the present application, the rolling member 311 is a roller, a pulley or a ball. When the roller and the pulley are set, the rotating shafts of the two can be set outwards perpendicular to the paper surface. If it is set as a ball, some spaces for accommodating the ball can be opened on the side wall of the electrode assembly inlet 31, and the ball is partially embedded in it, so that the ball Partially exposed, the exposed balls can be in contact with the electrode assembly 1 to guide the electrode assembly 1 . The use of rollers, pulleys or balls can provide rolling friction, which can make the electrode assembly 1 enter the case more smoothly. In the embodiment shown in Figure 3, it is a partial schematic diagram of the electrode assembly inlet 31, and it can be seen that the rolling member 311 is set as a roller in the figure, and the roller is elongated, and the different heights on one surface can be A plurality of rollers are provided to gradually come into contact with the electrode assembly 1. Both the long side wall and the wide side wall in the electrode assembly inlet 31 can be provided with rolling elements 311, and the long side wall and the wide side wall are also uniformly arranged. Rollers may be provided.

In some other embodiments of the present application, please refer to FIG. 4 , which shows that the radius of the rolling member 311 is gradually reduced along the introduction direction of the electrode assembly 1 in a part of the electrode assembly introduction port 31 (enlarged part of area A in FIG. 2 ). There are three rolling elements 311 in the figure, the uppermost rolling element 311 has the largest radius, and the lowermost rolling element 311 has the smallest radius. The radius of the rolling element 311 is shrunk in sequence, so that the rolling element 311 that contacts the electrode assembly 1 first is the rolling element 311 with a larger radius. The position error, therefore, the radius of the rolling element 311 shrinks sequentially in the direction of introduction, which can reduce the material cost of the rolling element 311 under the premise of ensuring the correction error.

In some other embodiments as shown in FIG. 4 , the width of the electrode assembly introduction opening 31 between the side wall on which the rolling member 311 is disposed and the opposite side wall gradually decreases along the introduction direction of the electrode assembly 1 . The gradual reduction of the electrode assembly inlet 31 can allow greater error at the upper end of the electrode assembly inlet 31, and after the lower end is reduced, the electrode assembly 1 is directly above the battery case 2 at this position, ultimately ensuring the accuracy of the electrode assembly 1. into the shell.

In some embodiments of the present application, please continue to refer to FIG. 4 , the housing fixing mechanism 32 is provided with a housing shaping component 33 , and the housing shaping component 33 is used to apply force to the side wall of the housing 2 so that the housing 2 The side walls are shaped into a predetermined shape. The casing shaping component 33 can apply pulling force, pushing force, and pulling force parallel to the surface of the casing 2 to the casing 2 . Due to the characteristics of the material of the housing 2, the distance between the side walls of the housing 2 may fluctuate. The concave part is flattened by pulling force, the protruding part is flattened by pushing force, or the distance between the side walls of the housing 2 is parallel to the housing 2 The pulling force on the surface pulls the corrugated shell 2 flat. Smoothing the side wall of the housing 2 through the housing 2-shaped assembly can improve the flatness of the housing 2 and ultimately improve the product quality of the battery assembly. In some other embodiments, the opening of the casing 2 can also be slightly enlarged by pulling force, so that the electrode assembly 1 is less likely to touch the casing 2 when it is inserted into the casing, thereby also solving the scratching problem of the electrode assembly 1 .

In some other embodiments of the present application, the casing shaping component 33 is arranged at or close to the opening of the casing 2, and is used to apply force to the side wall at or near the opening of the casing 2 . As shown in FIG. 2 , the deformation of the side wall at the upper opening of the housing 2 is the largest, and it is more effective to reshape the side wall of the housing 2 here, and it is easier to apply force. Enlarging the casing 2 at the upper part can better allow the electrode assembly 1 to enter the casing and prevent scratches.

In some other embodiments of the present application, the casing shaping component 33 includes a suction cup for being adsorbed on the side wall of the casing 2, or for abutting against an abutting piece on the side wall of the casing 2, or for pressing against The shaping bar of housing 2 sidewalls. The suction cup can be adsorbed on the housing 2 and is suitable for pulling or pushing. The abutting piece is used to apply pressure, and the shaping rod is used to apply pressure. As shown in FIG. 4 , the shell 2 is shaped by a suction cup, which is adsorbed on the shell 2 . After the suction cup is fixed, the suction cup can be manipulated to apply an outward pulling force, thereby enlarging the opening of the shell 2 . A plurality of suction cups can also be arranged to be adsorbed on the casing 2 and move toward each other among the plurality of suction cups, so as to flatten the wavy folds of the casing 2 .

In some other embodiments, the housing shaping component 33 is disposed on the side wall of the housing 2 where the long side of the housing 2 is located, and is used to apply force to the side wall of the housing 2 where the long side of the housing 2 is located. In FIG. 3 , the side wall where the long side and the wide side of the housing 2 are located are both provided with a housing shaping assembly 33 . In an actual application example, the deformation of the long side of the shell 2 is larger than that of the wide side, so the adjustment requirements for the long side of the shell shaping component 33 are also stronger, and the expansion of the long side can achieve Avoid scratching effect.

In the embodiment shown in FIG. 5 , the housing fixing mechanism 32 includes:

The frame side bracket 321 and the housing bracket 322 arranged oppositely, the housing bracket 322 is used to support the housing 2 , and can be adjusted up and down with the frame side bracket 321 . The adjustable lift of the housing support 322 can be obtained through designs such as slide rails, racks and pinions. A slider or a gear will do. By designing the brackets on both sides, the structure of the frame 3 can be made relatively simple, and at the same time, the shell bracket 322 is provided for lifting, so that the frame 3 can be adapted to the shells 2 of different heights. By adjusting the distance between the brackets, The rack 3 can be adapted to battery assemblies of different widths.

In some other embodiments, the electrode assembly inlet 31 is fixed on the upper part of the frame 3 . The battery assembly inlet 31 can be set separately from the fixing part of the housing 2, or it can be integrally fixed on the upper part of the frame 3. The advantage of this arrangement is that the electrode assembly inlet 31 can be used all the time when it is fixed facing the housing 2 without debugging. , easy maintenance. In some corresponding embodiments, the electrode assembly inlet 31 is detachably connected to the upper part of the frame 3 . The electrode assembly inlet 31 is designed to be detachably connected to the upper part of the frame 3, making the overall structure more flexible, easy to carry after disassembly, and also convenient to disassemble and clean.

In some comprehensive embodiments, the battery module assembly equipment of the present application includes a frame 3, and the frame 3 includes frame side brackets 321 on the left and right sides, and the side brackets 321 correspond to where the two long sides of the battery module are located. noodle. The bottom of the two side brackets 321 is provided with a housing bracket 322 , the side brackets 321 and the housing bracket 322 form a housing fixing mechanism 32 , and the housing 2 can be installed in the housing fixing mechanism 32 . The top of the housing fixing mechanism 32 is also provided with an electrode assembly inlet 31, the upper width of the electrode assembly inlet 31 is greater than the width of the bottom, and the two inner walls of the electrode assembly inlet 31 are also provided with rolling parts 311, the rolling parts 311 are three There are two rollers whose size decreases gradually, and the contact surface between the rollers and the electrode assembly 1 is arranged vertically and points to the inside of the opening of the casing 2. The shell fixing mechanism 32 is provided with a shell shaping assembly 33 , and the shell shaping assembly 33 includes a suction cup that absorbs the opening of the shell 2 to shape it and enlarge the opening of the shell 2 .

The above is only an embodiment of the application, and does not limit the scope of patent protection of the application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the application, or directly or indirectly used in other related All technical fields are equally included in the patent protection scope of the present application.

Claims

An equipment for assembling a battery assembly, the battery assembly includes an electrode assembly and a casing, the electrode assembly is a wound electrode assembly, including:

A frame, the frame is provided with a housing fixing mechanism, and the housing fixing mechanism is used to fix the housing;

An electrode assembly inlet, the electrode assembly inlet corresponding to the opening of the housing fixed by the housing fixing mechanism, at least one side wall of the inner wall of the electrode assembly inlet is provided with a rolling element.
The device for assembling battery assemblies according to claim 1, wherein the rolling axis of the rolling member is parallel to the side wall of the electrode assembly introduction port where it is located, and is perpendicular to the introduction direction of the electrode assembly.
The device for assembling battery components according to claim 1 or 2, wherein the rolling parts are provided on two opposite side walls of the inner wall of the electrode assembly inlet.
The device for assembling battery components according to any one of claims 1 to 2, wherein the electrode assembly inlet is provided with a side wall of the rolling member and a side wall opposite thereto, which is connected to the electrode assembly The contact surface of the electrode assembly is the introduction surface of the electrode assembly, and the introduction surface of the electrode assembly is located inside the corresponding inner wall of the housing, or the introduction surface of the electrode assembly extends into the opening of the housing.
The apparatus for assembling a battery assembly according to claim 4, wherein the contact surfaces of the electrode assembly inlet and the electrode assembly are both located inside the inner wall of the housing.
The battery assembly assembly device according to any one of claims 1, 2, and 5, wherein the rolling member is disposed on a side wall of the electrode assembly inlet corresponding to a long side of the electrode assembly.
The battery assembly assembly device according to any one of claims 1, 2, and 5, wherein the rolling member is a roller, a pulley or a ball.
The device for assembling battery components according to any one of claims 1, 2, and 5, wherein the radius of the rolling member gradually decreases along the direction in which the electrode component is introduced.
The battery assembly assembly device according to any one of claims 1, 2, and 5, wherein the width of the electrode assembly introduction port between the side wall provided with the rolling member and the opposite side wall is along the introduction direction of the electrode assembly Gradually shrink.
The device for assembling battery packs according to any one of claims 1, 2, and 5, wherein a shell shaping assembly is provided on the shell fixing mechanism, and the shell shaping assembly is used to correct the shell side The wall exerts force to shape the housing side walls into a predetermined shape.
The device for assembling battery packs according to claim 10, wherein the casing shaping assembly is arranged at or near the casing opening, for Apply force to the side wall at the opening of the housing.
The device for assembling battery packs according to claim 11, wherein the casing shaping assembly includes a suction cup for being adsorbed on the side wall of the casing, or an abutment for abutting against the side wall of the casing. A top piece, or a shaping rod for pressing against the side wall of the housing.
The apparatus for assembling battery packs according to claim 11, wherein the casing shaping assembly is provided on the casing side wall where the long sides of the casing are located, and is used to correct the long sides of the casing. where the side walls of the housing apply force.
The battery assembly assembly equipment according to any one of claims 1, 2, 5, 11-13, wherein the housing fixing mechanism comprises:

Rack side brackets set opposite;

The shell supporting piece is used for supporting the shell, and cooperates with the adjustable lift of the frame side bracket.
The battery assembly assembly device according to any one of claims 1, 2, 5, 11-13, wherein the electrode assembly inlet is fixed on the upper part of the frame.
The apparatus for assembling battery assemblies according to claim 15, wherein the electrode assembly inlet is detachably connected to the upper part of the frame.