Press fitting equipment

Abstract

The invention provides press-fitting equipment, which is used for press-fitting a shell and a cover body of a battery and comprises a positioning assembly and a coping assembly. The positioning assembly is provided with a first positioning part and a second positioning part, the cover body is limited at the first positioning part, and one end, connected with the cover body, of the shell is limited at the second positioning part; the coping assembly is arranged above the positioning assembly, and the coping assembly and the positioning assembly can move relatively in the press-fitting direction. In this way, the press-fitting efficiency and the press-fitting yield of the press-fitting equipment can be effectively improved, and the press-fitting cost can be effectively reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of battery assembly, and in particular to a press-assembly device. Background Art

[0002] With the development of battery technology, batteries are used in more and more fields and are gradually replacing traditional petrochemical energy in the field of automobile power. Batteries can store chemical energy and controllably convert chemical energy into electrical energy. In recyclable batteries, the active materials can be activated by charging after discharge and continue to be used.

[0003] In the early stage of battery production, the battery shell and cover need to be press-fitted. Most of the related technologies use press-fitting equipment, and the existing press-fitting equipment has complicated procedures and high labor costs for large-scale battery production lines. Therefore, how to improve the press-fitting efficiency of the shell and cover is a key factor in improving battery production efficiency and reducing press-fitting costs. Summary of the invention

[0004] The present application provides a press-fitting device for improving the press-fitting efficiency and press-fitting yield of the press-fitting device and reducing the press-fitting cost.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a press-fitting device for press-fitting the shell and cover of the battery, the press-fitting device includes: a positioning assembly and a pressing assembly. The positioning assembly is provided with a first positioning part and a second positioning part, wherein the cover is limited to the first positioning part, and one end of the shell for connecting with the cover is limited to the second positioning part; the pressing assembly is arranged above the positioning assembly, and the pressing assembly and the positioning assembly can move relative to each other along the pressing direction. The first positioning part for positioning the cover and the second positioning part for positioning the shell are arranged on the same component, that is, the first positioning part and the second positioning part are arranged on the positioning assembly. When it is necessary to press-fit shells and covers of different specifications and models, it is only necessary to replace the corresponding positioning assembly to quickly press-fit the corresponding shell and cover. Based on this, the number of replacement parts of the press-fitting equipment when press-fitting different types of shells and covers can be effectively reduced, thereby effectively reducing the pressing cost. Furthermore, the pressing assembly is arranged above the positioning assembly, and when the press-fitting device is press-fitting the shell and the cover, after the shell and the cover are positioned on the positioning assembly, the pressing assembly can directly move along the press-fitting direction to the end of the shell away from the cover, and abut against the end of the shell away from the cover. Based on this, the pressing assembly does not need to position the end of the shell away from the cover, and can evenly transmit the pressing force to the shell, so that the press-fitting device has a higher press-fitting stability, improves the press-fitting yield of the shell and the cover, and can effectively reduce the shell and cover process, thereby effectively improving the press-fitting efficiency of the shell and the cover.

[0006] In some embodiments, the positioning assembly includes a first floating assembly, and / or the pressing assembly includes a second floating assembly. The positioning assembly and the pressing assembly are configured as floating assemblies, based on which, during the process of the pressing device pressing the shell and the cover body along the pressing direction, the end of the shell away from the cover body is in planar contact with the pressing assembly, and the cover body is in planar contact with the positioning assembly, so that the cover body and the shell are subjected to a stable force during the pressing process, thereby effectively improving the pressing yield of the shell and the cover body.

[0007] In some embodiments, the first floating component includes: a positioning seat and a positioning plate. The positioning plate is disposed on the positioning seat, and the positioning seat and the positioning plate are connected in a floating manner, and the first positioning portion and the second positioning portion are disposed on a side of the positioning plate away from the positioning seat. The positioning plate is disposed on the positioning seat, and the positioning plate serving as a positioning shell and a cover is connected in a floating manner to the positioning seat, so that the cover and the shell are subjected to a stable force during the press-fitting process, thereby effectively improving the press-fitting yield of the shell and the cover.

[0008] In some embodiments, the positioning assembly further includes: a floating connection assembly. The floating connection assembly is disposed between the positioning seat and the positioning plate along the press-fitting direction, and is movably connected to the positioning seat and the positioning plate, respectively. The positioning seat and the positioning plate are floatingly connected through the floating connection assembly, based on which the force applied to the cover and the shell during the press-fitting process can be stabilized, thereby effectively improving the press-fitting yield of the shell and the cover.

[0009] In some embodiments, a first limiting hole is provided on a side of the positioning seat close to the positioning plate, and a second limiting hole is provided on a side of the positioning plate close to the positioning seat, and the first limiting hole and the second limiting hole are arranged along the press-fitting direction, and the floating connection assembly includes: a first positioning column. One end of the first positioning column is limited in the first limiting hole, and the other end is limited in the second limiting hole, and the first positioning column is movably connected to the positioning seat and the positioning plate along the press-fitting direction. Among them, the first limiting hole and the second limiting hole are arranged along the press-fitting direction, so that the positioning seat and the positioning plate connected by the first positioning column can maintain good centering, so as to prevent the positioning plate and the positioning seat from translating along a plane perpendicular to the press-fitting direction, thereby effectively improving the force stability of the cover body and the shell during the press-fitting process, and then effectively improving the press-fitting yield of the shell and the cover body.

[0010] In some embodiments, a third limiting hole is provided on one side of the positioning seat close to the positioning plate, and the third limiting hole is located in the middle area of ​​the positioning seat. The floating connection assembly also includes: a second positioning column. One end of the second positioning column is fixedly connected to one side of the positioning plate close to the positioning seat, and the other end is limited in the third limiting hole and is movably connected to the positioning seat. A third limiting hole is provided on the positioning plate, and the third limiting hole is located in the middle area of ​​the positioning seat. The second positioning column is fixedly connected to the positioning plate and limited in the third limiting hole. Based on this, the positioning seat and the positioning plate can maintain good centering, and the cover body and the shell body can be subjected to force stability during the press-fitting process, thereby effectively improving the press-fitting yield of the shell body and the cover body.

[0011] In some embodiments, the floating connection assembly further includes: an elastic member. The elastic member is disposed between the positioning seat and the positioning plate, and the two ends of the elastic member are respectively in contact with the positioning seat and the positioning plate. An elastic member is disposed between the positioning seat and the positioning plate, based on which after the pressing force of the pressing device is cancelled, the positioning plate and the positioning seat can be reset, thereby not affecting the positioning of the positioning assembly on the next shell and cover, thereby improving the pressing efficiency of the pressing device.

[0012] In some embodiments, the press-fitting device further comprises: a press-fitting mechanism. The press-fitting mechanism is connected to the press-top assembly to provide a press-fitting force for the press-top assembly along the press-fitting direction. The press-fitting mechanism is connected to the press-top assembly, and the press-fitting mechanism provides a press-fitting force for the press-top assembly, which can effectively improve the press-fitting efficiency of the press-fitting device.

[0013] In some embodiments, the press-fitting device further comprises: a column and a base assembly; the base assembly is fixedly connected to the column, wherein the press-fitting mechanism and the positioning assembly are respectively arranged on the column at intervals along the press-fitting direction. The press-fitting mechanism and the positioning assembly are arranged on the same column at intervals, which can ensure that when the press-fitting mechanism drives the top pressing assembly to move relative to the positioning assembly, the movement direction of the top pressing assembly is consistent with the press-fitting direction, based on which the press-fitting yield of the shell and the cover can be effectively improved.

[0014] In some embodiments, the press-fitting device further includes: a position adjustment component. The position adjustment component is connected to the column, the positioning component is arranged on the position adjustment component, and the position adjustment component is configured to adjust the distance of the positioning component relative to the pressing component along the press-fitting direction. Based on this, the distance between the positioning component and the press-fitting component can be adjusted by the position adjustment component, thereby improving the adaptability of the press-fitting device to different types of housings and covers, increasing the applicability of the press-fitting device, and effectively reducing the press-fitting cost of the housing and cover.

[0015] In some embodiments, the base assembly includes: a base body, an adsorbent, and a plurality of support rods. One end of the support rod is rotatably connected to the base body, and the rotation axis of the support rod relative to the base body is perpendicular to the support plane of the base body; the adsorbent is provided at the other end of the support rod, and the adsorbent is used to adsorb and fit with the support plane. The rotation of the plurality of support rods relative to the base body within the support plane can effectively increase the support area of ​​the base body and the support plane, thereby increasing the support stability of the press-fitting equipment, and further effectively improving the safety of the press-fitting equipment. Furthermore, an adsorbent is also provided at one end of the support rod, and the adsorbent is used to adsorb and fit with the support plane, based on which the safety of the press-fitting equipment can be further improved.

[0016] In some embodiments, the pressing mechanism includes: a sliding seat, a fixed seat and a pressure rod assembly. The sliding seat is fixedly connected to the pressure top assembly; the fixed seat is slidably connected to the sliding seat, and the sliding seat can slide relative to the fixed seat along the pressing direction; the pressure rod assembly is hinged to the sliding seat and the fixed seat respectively, and is used to transmit the pressing force to the sliding seat. The pressing mechanism is slidably connected to the fixed seat through the sliding seat, thereby driving the pressure top assembly to move relative to the positioning assembly along the pressing direction, and the pressing mechanism is also provided with a pressure rod assembly, which transmits the pressing force to the sliding seat through the pressure rod assembly, which can effectively save physical strength for the user, thereby effectively improving the pressing efficiency of the pressing equipment.

[0017] In some embodiments, the sliding seat can slide a preset stroke relative to the fixed seat along the press-fitting direction, and the preset stroke includes an upper stroke section and a lower stroke section. The pressing mechanism also includes: a first elastic member and a second elastic member. One end of the first elastic member is hinged to the sliding seat, and the other end is hinged to the fixed seat; one end of the second elastic member is hinged to the sliding seat, and the other end is hinged to the fixed seat; wherein, in the upper stroke section, the elastic force of the first elastic member is opposite to the press-fitting direction, and the elastic force of the second elastic member is opposite to the press-fitting direction, and in the lower stroke section, the elastic force of the first elastic member is in the same direction as the press-fitting direction, and the elastic force of the second elastic member is opposite to the press-fitting direction. Based on this, when the press-fitting device is press-fitting the shell and the cover, the first elastic member provides elastic force for the sliding seat in the lower stroke section, which can effectively save the user's physical strength, and the first elastic member in the upper stroke section and the second elastic member in the upper stroke section and the lower stroke section both provide elastic force away from the press-fitting direction for the sliding seat. On the one hand, after the press-fitting is completed, the first elastic member and the second elastic member can provide elastic force away from the press-fitting direction for the sliding seat, thereby reducing the physical strength consumption of the sliding seat on the user during the resetting process, thereby effectively improving the press-fitting efficiency of the press-fitting device. On the other hand, when the press-fitting device is press-fitting the shell and the cover along the press-fitting direction, the second elastic member can provide elastic force away from the press-fitting direction for the sliding seat, thereby buffering the sliding seat, and buffering the sliding seat to a certain extent, preventing the press-fitting assembly from crushing the shell and the cover, thereby effectively improving the press-fitting yield of the press-fitting device.

[0018] In some embodiments, the pressing mechanism further includes: an anti-collision member. The anti-collision member is arranged at the starting point of the upper stroke section along the pressing direction, and / or at the end point of the lower stroke section along the pressing direction. Among them, the anti-collision member is arranged at the starting point of the upper stroke section, which can effectively prevent the user from violently colliding with the sliding seat and the fixed seat when accumulating force in the early stage of the pressing work through the pressing mechanism, thereby effectively extending the service life of the pressing equipment. Among them, the anti-collision member is arranged at the end point of the lower stroke section, which can effectively prevent the pressing assembly from violently colliding with the shell, thereby effectively improving the pressing yield of the pressing equipment.

[0019] In some embodiments, the side wall of the second positioning portion and the outer side wall of the housing are arranged at a preset gap distance in a horizontal direction perpendicular to the press-fitting direction. In other words, the outer circumference of the housing at one end of the second positioning portion is smaller than the second positioning portion, which facilitates the housing to be quickly positioned in the second positioning portion, thereby effectively improving the press-fitting efficiency of the press-fitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a vehicle of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of a battery according to an embodiment of the present application;

[0023] Figure 3 It is a structural schematic diagram of an embodiment of an electrode assembly of the present application;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of an embodiment of the press-fitting device of the present application;

[0025] Figure 5 yes Figure 4 Schematic diagram of medium voltage equipment in direction A;

[0026] Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a positioning component;

[0027] Figure 7 yes Figure 6 A schematic diagram of the B direction of the positioning component;

[0028] Figure 8 yes Figure 1A schematic diagram of the three-dimensional structure of an embodiment of a medium pressure top assembly;

[0029] Fig. 9 yes Figure 8 C-direction schematic diagram of the medium pressure top assembly;

[0030] Fig.10 yes Figure 4 A schematic diagram of a portion of the structure of an embodiment of a middle pressing mechanism;

[0031] Fig.11 yes Figure 4 A schematic structural diagram of an embodiment of a middle base assembly.

[0032] Marking Description:

[0033] Battery 1, controller 2, motor 3, housing 10, first part 11, second part 12, battery cell 20, end cap 21, electrode terminal 21a, housing 22, electrode assembly 23, tab 23a, press-fitting equipment 30;

[0034] Frame 11b, gland 11a;

[0035] Frame 12b, gland 12a;

[0036] Positioning assembly 100, pressing assembly 200, pressing mechanism 300, column 400, base assembly 500, bearing base 600, adjustment assembly 700;

[0037] The positioning plate 110, the positioning seat 120, the floating connection assembly 130, the first positioning portion 111, the second positioning portion 112, the first positioning column 131, the second positioning column 133, and the elastic member 132;

[0038] A top pressing seat 210, a top pressing plate 220, a floating connection assembly 230, a third positioning column 231, a fourth positioning column 233, and an elastic member 232;

[0039] Screw rod 710, nut 720, hand wheel 730, shaft end baffle 740, bearing member 750, locking member 760;

[0040] A sliding seat 310, a fixed seat 320, a pressure rod assembly 330, a first elastic member 340, a second elastic member 350, an anti-collision member 360, a sliding block 312, and a connecting block 311;

[0041] A first anti-collision mounting portion 610 and a second anti-collision mounting portion 321;

[0042] Base body 510, adsorption member 520, support rod 530;

[0043] Press-fit direction X1, reset direction X2. DETAILED DESCRIPTION

[0044] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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).

[0049] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "front", "rear", "top", "bottom", "inside", "outside", and "axial" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description. They 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.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "connection" and "fixation" 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 ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] At present, from the perspective of market development prospects and application trends, batteries have been widely used in many fields due to their advantages of high energy density, high power density, many cycles and long storage time, etc. For example, they are applied to various energy storage power supply systems such as hydropower, thermal power, wind power and solar power stations, and provide power for high-power devices such as electric bicycles, electric motorcycles, electric cars and other vehicles, as well as military equipment and aerospace and other fields.

[0052] For example, see Vehicles. Figure 1 , Figure 1 It is a schematic diagram of the structure of an embodiment of the vehicle of the present application. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1 is arranged inside the vehicle, and the battery 1 can be fixedly arranged on the body of the vehicle. For example, the battery 1 is fixedly arranged at the bottom, the head or the tail of the vehicle body. The battery 1 can be used to power the vehicle. For example, the battery 1 can be used as an operating power source for the vehicle. The vehicle may also include a controller 2 and a motor 3. The controller 2 is used to control the battery 1 to power the motor 3, for example, for the starting, navigation and working power requirements of the vehicle during driving. The battery 1 can be used not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0053] In some embodiments, the battery 1 can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0054] The present application proposes a battery such as Figure 2 As shown, Figure 2The schematic diagram of the structure of an embodiment of the battery of the present application. The battery 1 includes a box 10 and a battery cell 20, and the battery cell 20 is contained in the box 10. Among them, the box 10 is used to provide a storage space for the battery cell 20, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first part 11 and a second part 12, and the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The second part 12 can be a hollow structure with one end open, and the first part 11 can be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0055] In the battery 1, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10. Of course, the battery can also be a battery module in which multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection, and the multiple battery modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery 1 can also include other structures. For example, the battery 1 can also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0056] Each battery cell 20 can be a secondary battery or a primary battery, or a lithium-ion battery, a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be cylindrical, flat, rectangular or in other shapes.

[0057] Specifically, Figure 3 As shown, Figure 3 2 is a schematic diagram of the structure of an embodiment of the electrode assembly of the present application. The battery cell 20 refers to the smallest unit constituting the battery, and the battery cell 20 includes an end cap 21, a shell 22, an electrode assembly 23 and other functional components. The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22.

[0058] In some embodiments, functional components such as electrode terminals 21 a may be disposed on the end cap 21. The electrode terminals 21 a may be used to electrically connect to the electrode assembly 23 to output or input electrical energy of the battery cell 20.

[0059] In some embodiments, the end cover 21 may also be provided with a pressure relief mechanism for releasing the internal pressure of the battery cell 20 when the internal pressure or temperature reaches a threshold value.

[0060] In some embodiments, an insulating member may be provided on the inner side of the end cover 21 , and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cover 21 to reduce the risk of short circuit.

[0061] The shell 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte and other components. The shell 22 and the end cap 21 can be independent components, and an opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 21 at the opening. Without limitation, the end cap 21 and the shell 22 can also be integrated. Specifically, the end cap 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 22, the end cap 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the electrode assembly 23.

[0062] The electrode assembly 23 is a component where electrochemical reactions occur in the battery cell 20. The housing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is also provided with a tab 23a. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 23a is connected to the electrode terminal 21a to form a current loop.

[0063] The related technology uses press-fitting equipment to press-fit the shell and the cover to form a box body. However, the press-fitting process of the existing press-fitting equipment is complicated and the labor cost is high for large-scale battery production lines. Therefore, how to improve the press-fitting efficiency of the shell and the cover is a key factor in improving battery production efficiency and reducing press-fitting costs.

[0064] To this end, the present application provides a press-fitting device 30, wherein the press-fitting device 30 can be used for the press-fitting process of the housing 22 and the cover of the battery cell 20 of the vehicle, wherein the cover includes the end cover 21 in the above-mentioned battery cell 20. The press-fitting device 30 can also be used for the press-fitting of the first part 11 or the second part 12 in the box body 10, for example, the frame 11b of the first part 11 in the box body 10 is press-fitted with the pressure cover 11a of the first part 11 to form the first part 11. For another example, the frame 12b of the second part 12 in the box body 10 is press-fitted with the pressure cover 12a of the second part 12 to form the second part 12.

[0065] This application mainly describes the press-fitting device 30 of this application in detail based on the specific application of the press-fitting device 30 in press-fitting the end cap 21 and the shell 22 of the battery. The press-fitting device 30 of this application can evenly transmit the pressing force to the shell 22, so that the press-fitting device 30 has a higher press-fitting stability, improves the press-fitting yield of the shell 22 and the cover, and can effectively reduce the press-fitting process of the shell 22 and the cover, thereby effectively improving the press-fitting efficiency of the shell 22 and the cover. This application mainly describes the press-fitting device 30 in detail based on its application in the press-fitting process of the end cap and shell of the battery cell 20.

[0066] The present application provides a press-fitting device 30, such as Figure 4 and Figure 5 As stated, Figure 4 It is a three-dimensional structural schematic diagram of an embodiment of the press-fitting device of the present application; Figure 5 yes Figure 4 A schematic diagram of the press-fitting device. The press-fitting device 30 is used to press-fit the shell 22 and cover of the battery cell 20, wherein the shell 22 includes the shell 22 of any of the above-mentioned structural types of the battery cell 20, and the cover includes the end cover 21 of any of the above-mentioned structural types of the battery cell 20.

[0067] The press-fitting device 30 includes: a positioning assembly 100 and a pressing assembly 200. The positioning assembly 100 is provided with a first positioning portion 111 and a second positioning portion 112, wherein the cover body is limited to the first positioning portion 111, and one end of the housing 22 for connecting with the cover body is limited to the second positioning portion 112; the pressing assembly 200 is arranged above the positioning assembly 100, and the pressing assembly 200 and the positioning assembly 100 can move relative to each other along the press-fitting direction X1.

[0068] Specifically, the top pressing assembly 200 is a component that provides a pressing force along the press-fitting direction X1 to press-fit the housing 22 and the cover body, and the positioning assembly 100 is a positioning assembly 100 for simultaneously positioning the cover body and the housing 22. In this embodiment, when the press-fitting device 30 performs the press-fitting process, the top pressing assembly 200 can move relative to the positioning assembly 100 along the press-fitting direction X1, and reset along the reset direction X2 opposite to the press-fitting direction X1. In other embodiments, when the press-fitting device 30 performs the press-fitting process, the positioning assembly 100 and the top pressing assembly 200 can move simultaneously, or any one of the positioning assembly 100 and the top pressing assembly 200 can move, which will not be described in detail herein.

[0069] Among them, the first positioning portion 111 for positioning the plate 110 and the second positioning portion 112 for positioning the housing 22 are arranged on the same component, that is, the first positioning portion 111 and the second positioning portion 112 are arranged on the positioning assembly 100. When it is necessary to press-fit housings 22 and covers of different specifications and models, only the corresponding positioning assembly 100 needs to be replaced to quickly press-fit the corresponding housings 22 and covers. Based on this, the number of replacement parts of the press-fitting equipment 30 when press-fitting different types of housings 22 and covers can be effectively reduced, thereby effectively reducing the press-fitting cost. Further, the top pressing assembly 200 is arranged above the positioning assembly 100 along the press-fitting direction X1. When the press-fitting equipment 30 presses the housing 22 and the cover, after the housing 22 and the cover are positioned on the positioning assembly 100, the top pressing assembly 200 can directly move along the press-fitting direction X1 to the end of the housing 22 away from the cover, and abut against the end of the housing 22 away from the cover. Based on this, the pressing assembly 200 does not need to position the end of the shell 22 away from the cover body, and the pressing force can be evenly transmitted to the shell 22, so that the pressing equipment 30 has a higher pressing stability, which improves the pressing yield of the shell 22 and the cover body, and can effectively reduce the pressing process of the shell 22 and the cover body, thereby effectively improving the pressing efficiency of the shell 22 and the cover body.

[0070] Different from the prior art, the press-fitting device 30 of the present application includes a positioning assembly 100 and a pressing assembly 200. The positioning assembly 100 is provided with a first positioning portion 111 and a second positioning portion 112, wherein the cover body is limited to the first positioning portion 111, and one end of the shell 22 used for connecting with the cover body is limited to the second positioning portion 112; the pressing assembly 200 is arranged above the positioning assembly 100, and the pressing assembly 200 and the positioning assembly 100 can move relative to each other along the pressing direction X1. In the above manner, the pressing assembly 200 does not need to position the end of the shell 22 away from the cover body, and can evenly transmit the pressing force to the shell 22, so that the press-fitting device 30 has a higher press-fitting stability, improves the press-fitting yield of the shell 22 and the cover body, and can effectively reduce the press-fitting process of the shell 22 and the cover body, thereby effectively improving the press-fitting efficiency of the shell 22 and the cover body. In addition, the first positioning portion 111 for positioning the plate 110 body and the second positioning portion 112 for positioning the shell 22 are arranged on the same component, that is, the first positioning portion 111 and the second positioning portion 112 are arranged on the positioning component 100. When it is necessary to press-fit shells 22 and cover bodies of different specifications and models, it is only necessary to replace the corresponding positioning component 100 to quickly press-fit the corresponding shell 22 and cover body. Based on this, the number of replacement parts of the press-fitting equipment 30 when press-fitting different types of shells 22 and cover bodies can be effectively reduced, thereby effectively reducing the press-fitting cost.

[0071] In some embodiments, Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a positioning component; Figure 7 yes Figure 6 A schematic diagram of the B direction of the positioning component; Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a medium pressure top assembly; Fig. 9 yes Figure 8 Schematic diagram of the C-direction of the pressure top assembly. The positioning assembly 100 includes a first floating assembly, and / or the pressure top assembly 200 includes a second floating assembly. In the present embodiment, the positioning assembly 100 and the pressure top assembly 200 are configured as floating assemblies, namely, a first floating assembly and a second floating assembly, based on which, during the process of the press-fitting device 30 press-fitting the shell 22 and the cover body along the press-fitting direction X1, the end of the shell 22 away from the cover body is in planar contact with the pressure top assembly 200, and the cover body is in planar contact with the positioning assembly 100, so that the cover body and the shell 22 are subjected to stable force during the press-fitting process, thereby effectively improving the press-fitting yield of the shell 22 and the cover body. In other embodiments, only one of the positioning assembly 100 and the pressure top assembly 200 may be configured as a floating assembly, which is not described in detail herein.

[0072] In some embodiments, Figure 6 and Figure 7 The first floating assembly includes: a positioning seat 120 and a positioning plate 110. The positioning plate 110 is disposed on the positioning seat 120, and the positioning seat 120 and the positioning plate 110 are floatingly connected. The first positioning portion 111 and the second positioning portion 112 are disposed on the side of the positioning plate 110 away from the positioning seat 120.

[0073] Specifically, the specific structural shape of the first positioning portion 111 can be designed according to the specific structure of the cover body, and the specific structural shape of the second positioning portion 112 can be designed according to the specific structure of one end of the shell 22 connected to the cover body, which will not be described in detail herein. The positioning plate 110 is disposed on the positioning seat 120, and the positioning plate 110, which serves as a positioning shell 22 and the cover body, is floatingly connected to the positioning seat 120, so that the cover body and the shell 22 are subjected to a stable force during the press-fitting process, thereby effectively improving the press-fitting yield of the shell 22 and the cover body.

[0074] In some embodiments, see Figure 6 and Figure 7 The first floating assembly further includes: a floating connection assembly 130. The floating connection assembly 130 is disposed between the positioning seat 120 and the positioning plate 110 along the press-fitting direction X1, and is movably connected to the positioning seat 120 and the positioning plate 110 respectively. The positioning seat 120 and the positioning plate 110 are floatingly connected through the floating connection assembly 130, based on which the force of the cover body and the shell 22 can be stabilized during the press-fitting process, thereby effectively improving the press-fitting yield of the shell 22 and the cover body.

[0075] In some embodiments, see Figure 6 and Figure 7 , a first limiting hole (not marked in the figure) is provided on the side of the positioning seat 120 close to the positioning plate 110, and a second limiting hole (not marked in the figure) is provided on the side of the positioning plate 110 close to the positioning seat 120, and the first limiting hole and the second limiting hole are arranged along the press-fitting direction X1, and the floating connection assembly 130 includes: a first positioning column 131. One end of the first positioning column 131 is limited in the first limiting hole, and the other end is limited in the second limiting hole, and the first positioning column 131 is movably connected with the positioning seat 120 and the positioning plate 110 along the press-fitting direction X1. Among them, the first limiting hole and the second limiting hole are arranged along the press-fitting direction X1, so that the positioning seat 120 and the positioning plate 110 connected by the first positioning column 131 can maintain good centering, so as to prevent the positioning plate 110 and the positioning seat 120 from translating along a plane perpendicular to the press-fitting direction X1, thereby effectively improving the stability of the force applied to the cover body and the shell 22 during the press-fitting process, and further effectively improving the press-fitting yield of the shell 22 and the cover body.

[0076] For example, in this embodiment, the floating connection assembly 130 includes four first positioning columns 131, and the edge area of ​​the positioning seat 120 on one side close to the positioning plate 110 is provided with four evenly arranged first limiting holes, and the edge area of ​​the positioning plate 110 on one side close to the positioning seat 120 is provided with four second limiting holes corresponding to the first limiting holes, wherein the four first positioning columns 131 are respectively installed in the above-mentioned limiting manner and are now located in the corresponding first limiting holes and second limiting holes, based on this, the positioning seat 120 and the positioning plate 110 are positioned and restricted by the four first positioning columns 131, so that the positioning seat 120 and the positioning plate 110 can maintain better concentricity, thereby more effectively improving the stability of the force applied to the cover body and the shell 22 during the pressing process, and further effectively improving the pressing yield of the shell 22 and the cover body.

[0077] In some embodiments, see further Figure 6 and Figure 7 A third limiting hole is provided on one side of the positioning seat 120 close to the positioning plate 110, and the third limiting hole is located in the middle area of ​​the positioning plate 110. The floating connection assembly 130 further includes: a second positioning column 133. One end of the second positioning column 133 is fixedly connected to one side of the positioning plate 110 close to the positioning seat 120, and the other end is limited in the third limiting hole and is movably connected to the positioning seat 120.

[0078] Specifically, in this embodiment, a cone head is provided at one end of the second positioning column 133, wherein the cone head is limited in the third limiting hole. In other embodiments, the second positioning column 133 may also be provided in other structural shapes. The positioning seat 120 is provided with a third limiting hole, and the third limiting hole is located in the middle area of ​​the positioning seat 120. The second positioning column 133 is fixedly connected to the positioning plate 110 and limited in the third limiting hole. Based on this, the positioning seat 120 and the positioning plate 110 can maintain good centering, and the cover body and the shell 22 can also be subjected to force stability during the press-fitting process, thereby effectively improving the press-fitting yield of the shell 22 and the cover body.

[0079] In some embodiments, the floating connection assembly 130 further includes: an elastic member 132. The elastic member 132 is disposed between the positioning seat 120 and the positioning plate 110, and the two ends thereof are respectively in contact with the positioning seat 120 and the positioning plate 110. The elastic member 132 is disposed between the positioning seat 120 and the positioning plate 110, based on which after the press-fitting device 30 cancels the pressing force, the positioning plate 110 and the positioning seat 120 can be reset, so as not to affect the positioning of the positioning assembly 100 on the next shell 22 and the cover body, thereby effectively improving the press-fitting efficiency of the press-fitting device 30. For example, in the present embodiment, four elastic members 132, such as springs, are evenly arranged between the positioning plate 110 and the positioning seat 120, based on which the positioning seat 120 and the positioning plate 110 can maintain the floating connection characteristics, and the positioning seat 120 and the positioning plate 110 can also be automatically reset, thereby effectively improving the press-fitting efficiency of the press-fitting device 30.

[0080] In some embodiments, Figure 8 and Fig. 9 As shown, the second floating assembly includes: a top pressing seat 210 and a top pressing plate 220. The top pressing plate 220 is arranged on the top pressing seat 210, and the top pressing seat 210 is connected to the top pressing plate 220 in a floating manner. The top pressing plate 220 is arranged on the top pressing seat 210, and the top pressing plate 220, which serves as a positioning housing 22 and the cover body, is connected to the top pressing seat 210 in a floating manner, so that the cover body and the housing 22 are subjected to a stable force during the press-fitting process, thereby effectively improving the press-fitting yield of the housing 22 and the cover body.

[0081] In some embodiments, Figure 8 and Fig. 9 As shown, the second floating assembly further includes: a floating connection assembly 230. The floating connection assembly 230 is disposed between the top pressing seat 210 and the top pressing plate 220 along the press-fitting direction X1, and is movably connected to the top pressing seat 210 and the top pressing plate 220 respectively. The top pressing seat 210 and the top pressing plate 220 are floatingly connected through the floating connection assembly 230, based on which the force applied to the cover body and the shell 22 during the press-fitting process can be stabilized, thereby effectively improving the press-fitting yield of the shell 22 and the cover body.

[0082] In some embodiments, Figure 8 and Fig. 9As shown, a fourth limiting hole (not marked in the figure) is provided on one side of the top pressing seat 210 close to the top pressing plate 220, and a fifth limiting hole (not marked in the figure) is provided on one side of the top pressing plate 220 close to the top pressing seat 210, and the fourth limiting hole and the fifth limiting hole are arranged along the press-fitting direction X1, and the floating connection assembly 230 includes: a third positioning column 231. One end of the third positioning column 231 is limited in the fourth limiting hole, and the other end is limited in the fifth limiting hole, and the fourth positioning column 233 is movably connected with the top pressing seat 210 and the top pressing plate 220 along the press-fitting direction X1. Among them, the fourth limiting hole and the fifth limiting hole are arranged along the pressing direction X1, so that the pressing seat 210 and the pressing plate 220 connected by the third positioning column 231 can maintain good alignment, so as to prevent the pressing plate 220 and the pressing seat 210 from translating along a plane perpendicular to the pressing direction X1, thereby effectively improving the stability of the force applied to the cover body and the shell 22 during the pressing process, and further effectively improving the pressing yield of the shell 22 and the cover body.

[0083] For example, in this embodiment, the floating connection assembly 230 includes four third positioning columns 231, and the edge area of ​​the top pressing seat 210 on the side close to the top pressing plate 220 is provided with four evenly arranged fourth limiting holes, and the edge area of ​​the top pressing plate 220 on the side close to the top pressing seat 210 is provided with four fifth limiting holes corresponding to the fourth limiting holes, wherein the four third positioning columns 231 are respectively installed in the above-mentioned limiting manner and are now located in the corresponding fourth limiting holes and fifth limiting holes. Based on this, the top pressing seat 210 and the top pressing plate 220 are positioned and restricted by the four third positioning columns 231, so that the top pressing seat 210 and the top pressing plate 220 can maintain better concentricity, thereby more effectively improving the stability of the force applied to the cover body and the shell 22 during the press-fitting process, and further effectively improving the press-fitting yield of the shell 22 and the cover body.

[0084] In some embodiments, see further Figure 8 and Fig. 9 , a sixth limiting hole is provided on one side of the top pressing seat 210 close to the top pressing plate 220, and the sixth limiting hole is located in the middle area of ​​the top pressing seat 210, and the floating connection assembly 230 further includes: a fourth positioning column 233. One end of the fourth positioning column 233 is fixedly connected to the side of the top pressing plate 220 close to the top pressing seat 210, and the other end is limited in the sixth limiting hole and is movably connected to the top pressing seat 210. The top pressing seat 210 is provided with a sixth limiting hole, and the sixth limiting hole is located in the middle area of ​​the top pressing seat 210. The fourth positioning column 233 is fixedly connected to the top pressing plate 220 and limited in the sixth limiting hole. Based on this, the top pressing seat 210 and the top pressing plate 220 can maintain good centering, and the cover body and the shell 22 can also be subjected to force stability during the press-fitting process, thereby effectively improving the press-fitting yield of the shell 22 and the cover body.

[0085] In some embodiments, the floating connection assembly 230 further includes an elastic member 232. The elastic member 232 is disposed between the top pressing seat 210 and the top pressing plate 220, and the two ends thereof are respectively in contact with the top pressing seat 210 and the top pressing plate 220. The elastic member 232 is disposed between the top pressing seat 210 and the top pressing plate 220, based on which after the press-fitting device 30 cancels the pressing force, the top pressing plate 220 and the top pressing seat 210 can be reset, so as not to affect the positioning of the positioning assembly 100 on the next shell 22 and the cover body, thereby improving the press-fitting efficiency of the press-fitting device 30. For example, in this embodiment, four elastic members 232, such as springs, are evenly arranged between the top pressing plate 220 and the top pressing seat 210, based on which the top pressing seat 210 and the top pressing plate 220 can maintain the floating connection characteristics, and can also enable the top pressing seat 210 and the top pressing plate 220 to achieve automatic reset, thereby effectively improving the press-fitting efficiency of the press-fitting device 30.

[0086] In some embodiments, see Figure 4 , Figure 5 and Fig.10 , Fig.10 yes Figure 4 A partial structural diagram of an embodiment of a pressing mechanism in the middle. The pressing device 30 also includes: a pressing mechanism 300. The pressing mechanism 300 is connected to the pressing top assembly 200 to provide a pressing force along the pressing direction X1 for the pressing top assembly 200. The pressing mechanism 300 is connected to the pressing top assembly 200, and the pressing mechanism 300 provides a pressing force for the pressing top assembly 200, which can effectively improve the pressing efficiency of the pressing device 30.

[0087] In some embodiments, see Figure 4 and Figure 5 The press-fitting device 30 also includes: a column 400 and a base assembly 500; the base assembly 500 is fixedly connected to the column 400, wherein the pressing mechanism 300 and the positioning assembly 100 are respectively arranged on the column 400 at intervals along the pressing direction X1. The pressing mechanism 300 and the positioning assembly 100 are arranged on the same column 400 at intervals, which can ensure that when the pressing mechanism 300 drives the pressing assembly 200 to move relative to the positioning assembly 100, the movement direction of the pressing assembly 200 is consistent with the pressing direction X1, based on which the pressing yield of the shell 22 and the cover can be effectively improved. In this embodiment, the column 400 is set to a columnar structure, and in other embodiments, the column 400 can also be set to other structural shapes.

[0088] In some embodiments, see Figure 4 and Figure 5The press-fitting device 30 further includes: a position adjustment component 700. The position adjustment component 700 is connected to the column 400, and the positioning component 100 is disposed on the position adjustment component 700. The position adjustment component 700 is configured to adjust the distance of the positioning component 100 relative to the pressing component 200 along the pressing direction X1. Based on this, the distance between the positioning component 100 and the pressing component 200 can be adjusted by the position adjustment component 700, thereby improving the adaptability of the press-fitting device 30 to different types of housings 22 and covers, increasing the applicability of the press-fitting device 30, and effectively reducing the pressing cost of the housing 22 and the cover.

[0089] In some embodiments, see Figure 4 and Figure 5 The positioning assembly 700 includes a screw rod 710, a nut 720, a handwheel 730, a shaft end baffle 740 and a bearing member 750, wherein the nut 720 is sleeved on the outer peripheral side of the screw rod 710 to form a screw rod 710 nut 720 mechanism with the screw rod 710, the handwheel 730 is fixed to one end of the screw rod 710, and the shaft end baffle 740 is arranged at one end of the screw rod 710 where the handwheel 730 is arranged to limit the movement of the handwheel 730 relative to the screw rod 710 along the axial direction of the screw rod 710. The positioning assembly 100 is arranged on the supporting member 750, one end of the supporting member 750 is fixedly connected to the nut 720, a through hole is arranged on the supporting member 750, the column 400 passes through the through hole of the supporting member 750 and is movably connected to the supporting member 750, the screw rod 710 and the column 400 are arranged in parallel and spaced apart, based on this, by rotating the hand wheel 730, the nut 720 can drive the supporting member 750 to move relative to the column 400 along the axial direction of the screw rod 710 or the column 400, so as to adjust the distance between the positioning assembly 100 and the pressing top assembly 200, thereby improving the adaptability of the pressing equipment 30 to different types of shells 22 and cover bodies, increasing the practicality of the pressing equipment 30, and effectively reducing the pressing cost of the shell 22 and the cover body.

[0090] In some embodiments, see Figure 5 The positioning assembly 700 also includes a locking piece 760, wherein a locking hole is provided on the bearing assembly, and the locking piece 760 can pass through the locking hole to abut against the column 400, thereby limiting the relative movement of the bearing assembly 750 and the column 400. Based on this, after the user adjusts the relative position relationship between the positioning assembly 100 and the pressing assembly 200 through the screw rod 710 nut 720 mechanism, the user can further pass the locking piece 760 through the locking hole and abut against the column 400 to limit the relative movement of the positioning assembly 100 and the column 400, thereby preventing the positioning assembly 100 from sliding down during the pressing process, thereby effectively improving the stability of the pressing equipment 30 and the pressing yield.

[0091] In some embodiments, see Figure 4 , Figure 5 and Fig.10The pressing mechanism 300 includes: a sliding seat 310, a fixed seat 320 and a pressure rod assembly 330. The sliding seat 310 is fixedly connected to the top pressing assembly 200; the fixed seat 320 is slidably connected to the sliding seat 310, and the sliding seat 310 can slide relative to the fixed seat 320 along the pressing direction X1; the pressure rod assembly 330 is hinged to the sliding seat 310 and the fixed seat 320 respectively, and is used to transmit the pressing force to the sliding seat 310. The pressing mechanism 300 is slidably connected to the fixed seat 320 through the sliding seat 310, thereby driving the top pressing assembly 200 to move relative to the positioning assembly 100 along the pressing direction X1, and the pressing mechanism 300 is also provided with a pressure rod assembly 330, and the pressing force is transmitted to the sliding seat 310 through the pressure rod assembly 330, which can effectively save physical strength for the user, thereby effectively improving the pressing efficiency of the pressing device 30.

[0092] In some embodiments, see Figure 4 , Figure 5 and Fig.10 The sliding seat 310 can slide a preset stroke relative to the fixed seat 320 along the pressing direction X1, and the preset stroke includes an upper stroke section and a lower stroke section. The pressing mechanism 300 also includes: a first elastic member 340 and a second elastic member 350. One end of the first elastic member 340 is hinged to the sliding seat 310, and the other end is hinged to the fixed seat 320; one end of the second elastic member 350 is hinged to the sliding seat 310, and the other end is hinged to the fixed seat 320; wherein, in the upper stroke section, the elastic force of the first elastic member 340 is opposite to the pressing direction X1, and the elastic force of the second elastic member 350 is opposite to the pressing direction X1, and in the lower stroke section, the elastic force of the first elastic member 340 is in the same direction as the pressing direction X1, and the elastic force of the second elastic member 350 is opposite to the pressing direction X1. Based on this, when the pressing device 30 presses the shell body 22 and the cover body, the first elastic member 340 provides elastic force for the sliding seat 310 in the lower stroke section, which can effectively save the user's physical strength, and the first elastic member 340 in the upper stroke section and the second elastic member 350 in the upper stroke section and the lower stroke section both provide the sliding seat 310 with elastic force deviating from the pressing direction X1 (that is, in the same direction as the reset direction X2). On the one hand, after the pressing is completed, the first elastic member 340 and the second elastic member 350 can provide the sliding seat 310 with elastic force deviating from the pressing direction X1, thereby reducing the physical strength consumption of the sliding seat 310 on the user during the resetting process, thereby effectively improving the pressing efficiency of the pressing device 30. On the other hand, when the pressing device 30 presses the shell 22 and the cover body along the pressing direction X1, the second elastic member 350 can provide the sliding seat 310 with an elastic force that deviates from the pressing direction X1, thereby buffering the sliding seat 310. To a certain extent, the sliding seat 310 is buffered to prevent the pressing assembly 200 from damaging the shell 22 and the cover body, thereby effectively improving the pressing yield of the pressing device 30.

[0093] For example, in this embodiment, see Figure 4 , Figure 5 and Fig.10 The pressing mechanism 300 includes two first elastic members 340 and two second elastic members 350, wherein each of the first elastic member 340 and the second elastic member is hinged to the fixed seat 320 and the mounting seat based on the above-mentioned connection method, and the two first elastic members 340 are distributed on both sides of the fixed seat 320, and the two second elastic members 350 are distributed on both sides of the fixed seat 320. Based on this, the force on the sliding seat 310 is more stable, and the sliding seat 310 is prevented from shaking in a direction perpendicular to the pressing direction X1 when moving along the pressing direction X1 and the reset direction X2, thereby effectively improving the stability of the pressing equipment 30 and improving the pressing yield.

[0094] In this embodiment, the first elastic member 340 and the second elastic member 350 are both nitrogen springs. In other embodiments, other elastic elements may be used as substitutes, which will not be described in detail herein.

[0095] In some embodiments, see Figure 4 , Figure 5 and Fig.10 The sliding seat 310 includes a sliding block 312 and a connecting block 311 detachably connected to the sliding block 312. The sliding block 312 is provided with a sliding groove, the fixed seat 320 is provided with a sliding rail, and the sliding block 312 and the fixed seat 320 are slidably connected to the sliding rail through the sliding groove. A fixing portion is provided on the side of the sliding block 312 away from the fixed seat 320, and the connecting block 311 is detachably connected to the fixing portion. The first elastic member 340, the second elastic member 350 and the pressure rod assembly 330 are respectively connected to the connecting block 311, wherein the top pressing assembly 200 is fixed on the connecting block 311, based on which the sliding block 312 is used as a replaceable part, thereby effectively reducing the maintenance cost of the pressing device 30.

[0096] In some embodiments, see Figure 4 and Figure 5 , the pressing mechanism 300 also includes: an anti-collision member 360. The anti-collision member 360 is arranged at the starting point of the upper stroke section along the pressing direction X1, and / or at the end point of the lower stroke section along the pressing direction X1. Among them, the anti-collision member 360 is arranged at the starting point of the upper stroke section, which can effectively prevent the sliding seat 310 and the fixed seat 320 from violently colliding when the user accumulates force in the early stage of the pressing work through the pressing mechanism 300, thereby effectively extending the service life of the pressing device 30. Among them, the anti-collision member 360 is arranged at the end point of the lower stroke section, which can effectively prevent the top pressing assembly 200 from violently colliding with the shell 22, thereby effectively improving the pressing yield of the pressing device 30.

[0097] In some embodiments, see Figure 4 and Figure 5, the press-fitting device 30 also includes: a bearing base 600. The bearing base 600 is provided with screw through holes (not marked in the figure) and column through holes (not marked in the figure) at intervals, one end of the screw 710 provided with a hand wheel 730 passes through the screw through hole and is rotatably connected to the bearing base 600, and the column 400 passes through the column through hole and is connected to the bearing base 600. The fixed seat 320 is fixed on the bearing base 600, and the bearing base 600 is also provided with a first anti-collision mounting portion 610, and the end of the fixed seat 320 away from the bearing base 600 is provided with a second anti-collision mounting portion 321, wherein two anti-collision members 360 are respectively installed on the first anti-collision mounting portion 610 and the second anti-collision mounting portion 321.

[0098] In some embodiments, the side wall of the second positioning portion 112 and the outer side wall of the housing 22 are arranged at a preset gap distance in a horizontal direction perpendicular to the press-fitting direction X1. In other words, the outer circumference of the housing 22 at one end of the second positioning portion 112 is smaller than the second positioning portion 112, which facilitates the housing 22 to be quickly positioned in the second positioning portion 112, thereby effectively improving the press-fitting efficiency of the press-fitting device 30.

[0099] In some embodiments, the preset gap distance is not less than 0.1 mm and not greater than 0.2 mm. Based on this, the shell 22 can be quickly positioned in the second positioning portion 112, while effectively preventing the shell 22 from being too loose between the second positioning portion 112, thereby effectively improving the pressing efficiency of the pressing equipment 30 while ensuring the stability of the pressing equipment 30.

[0100] In some embodiments, see Figure 4 , Figure 5 and Fig.11 , Fig.11 yes Figure 4 A schematic diagram of the structure of an embodiment of a base assembly. The base assembly 500 includes: a base body 510, an adsorbent 520 and a plurality of support rods 530. One end of the support rod 530 is rotatably connected to the base body 510, and the rotation axis of the support rod 530 relative to the base body 510 is perpendicular to the support plane of the base body 510; the adsorbent 520 is arranged at the other end of the support rod 530, and the adsorbent 520 is used to be adsorbed and fitted with the support plane. The rotation of the plurality of support rods 530 relative to the base body 510 within the support plane can effectively increase the support area of ​​the base body 510 and the support plane, thereby improving the support stability of the press-fitting device 30, and further effectively improving the safety of the press-fitting device 30. Furthermore, an adsorbent 520 is also arranged at one end of the support rod 530, and the adsorbent 520 is used to be adsorbed and fitted with the support plane, based on which the safety of the press-fitting device 30 can be further improved.

[0101] In summary, the press-fitting device 30 of the present application includes a positioning assembly 100 and a pressing assembly 200. The positioning assembly 100 is provided with a first positioning portion 111 and a second positioning portion 112, wherein the cover body is limited to the first positioning portion 111, and one end of the shell 22 used for connecting with the cover body is limited to the second positioning portion 112; the pressing assembly 200 is arranged above the positioning assembly 100, and the pressing assembly 200 and the positioning assembly 100 can move relative to each other along the press-fitting direction X1. Through the above-mentioned method, the pressing assembly 200 does not need to position the end of the shell 22 away from the cover body, and can evenly transmit the pressing force to the shell 22, so that the press-fitting device 30 has a higher press-fitting stability, improves the press-fitting yield of the shell 22 and the cover body, and can effectively reduce the shell 22 and the cover body process, thereby effectively improving the press-fitting efficiency of the shell 22 and the cover body. In addition, the first positioning portion 111 for positioning the plate 110 body and the second positioning portion 112 for positioning the shell 22 are arranged on the same component, that is, the first positioning portion 111 and the second positioning portion 112 are arranged on the positioning component 100. When it is necessary to press-fit shells 22 and cover bodies of different specifications and models, it is only necessary to replace the corresponding positioning component 100 to quickly press-fit the corresponding shell 22 and cover body. Based on this, the number of replacement parts of the press-fitting equipment 30 when press-fitting different types of shells 22 and cover bodies can be effectively reduced, thereby effectively reducing the press-fitting cost.

[0102] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A press-fitting device, characterized in that: Used to press-fit the battery housing and cover, the press-fitting equipment includes: A positioning assembly, provided with a first positioning portion and a second positioning portion, wherein the cover body is limited to the first positioning portion, and one end of the shell used for connecting with the cover body is limited to the second positioning portion; The pressing assembly is arranged above the positioning assembly, and the pressing assembly and the positioning assembly can move relative to each other along the pressing direction.

2. The press-fitting device according to claim 1, characterized in that: The positioning assembly includes a first floating assembly, and / or the top pressing assembly includes a second floating assembly.

3. The press-fitting device according to claim 2, characterized in that: The first floating assembly comprises: Positioning seat; The positioning plate is arranged on the positioning seat, and the positioning seat is floatingly connected to the positioning plate. The first positioning portion and the second positioning portion are arranged on a side of the positioning plate away from the positioning seat.

4. The press-fitting device according to claim 3, characterized in that: The first floating assembly also includes: A floating connection assembly is arranged between the positioning seat and the positioning plate along the press-fitting direction, and is movably connected to the positioning seat and the positioning plate respectively.

5. The press-fitting device according to claim 4, characterized in that: A first limiting hole is provided on one side of the positioning seat close to the positioning plate, and a second limiting hole is provided on one side of the positioning plate close to the positioning seat, wherein the first limiting hole and the second limiting hole are arranged along the press-fitting direction, and the floating connection assembly comprises: A first positioning column has one end limited in the first limiting hole and the other end limited in the second limiting hole, and the first positioning column is movably connected with the positioning seat and the positioning plate along the press-fitting direction.

6. The press-fitting device according to claim 4, characterized in that: A third limiting hole is provided on one side of the positioning seat close to the positioning plate, and the third limiting hole is located in the middle area of ​​the positioning seat. The floating connection assembly also includes: The second positioning column has one end fixedly connected to one side of the positioning plate close to the positioning seat, and the other end is limited in the third limiting hole and movably connected to the positioning seat.

7. The press-fitting device according to any one of claims 4 to 6, characterized in that: The floating connection assembly also includes: The elastic member is arranged between the positioning seat and the positioning plate, and two ends thereof are respectively in contact with the positioning seat and the positioning plate.

8. The press-fitting device according to any one of claims 1 to 6, characterized in that: The press-fitting device also includes: The pressing mechanism is connected to the pressing assembly and provides a pressing force for the pressing assembly along the pressing direction.

9. The press-fitting device according to claim 8, characterized in that: The press-fitting device also includes: pillars; and The base assembly is fixedly connected to the column, wherein the pressing mechanism and the positioning assembly are respectively arranged on the column at intervals along the pressing direction.

10. The press-fitting device according to claim 9, characterized in that: The press-fitting device also includes: A position adjustment component is connected to the column, the positioning component is arranged on the position adjustment component, and the position adjustment component is configured to adjust the distance of the positioning component relative to the pressing component along the pressing direction.

11. The press-fitting device according to claim 9, characterized in that: The base assembly comprises: Base body; A plurality of support rods, one end of each support rod being rotatably connected to the base body, and a rotation axis of each support rod relative to the base body being perpendicular to a support plane of the base body; The adsorption member is arranged at the other end of the support rod, and the adsorption member is used for adsorption and adhesion with the support plane.

12. The press-fitting device according to claim 8, characterized in that: The pressing mechanism comprises: A sliding seat, fixedly connected to the capping assembly; A fixed seat, slidably connected to the sliding seat, and the sliding seat can slide relative to the fixed seat along the press-fitting direction; The pressing rod assembly is hinged to the sliding seat and the fixed seat respectively, and is used for transmitting the pressing force to the sliding seat.

13. The press-fitting device according to claim 12, characterized in that: The sliding seat can slide relative to the fixed seat along the pressing direction for a preset stroke, wherein the preset stroke includes an upper stroke section and a lower stroke section, and the pressing mechanism further includes: A first elastic member, one end of which is hinged to the sliding seat, and the other end of which is hinged to the fixed seat; A second elastic member, one end of which is hinged to the sliding seat, and the other end of which is hinged to the fixed seat; Among them, in the upper stroke section, the direction of the elastic force of the first elastic member is opposite to the press-fitting direction, and the direction of the elastic force of the second elastic member is opposite to the press-fitting direction. In the lower stroke section, the direction of the elastic force of the first elastic member is the same direction as the press-fitting direction, and the direction of the elastic force of the second elastic member is opposite to the press-fitting direction.

14. The press-fitting device according to claim 13, characterized in that: The pressing mechanism also includes: An anti-collision member is arranged at a starting point of the upper travel section along the press-fitting direction, and / or is arranged at an end point of the lower travel section along the press-fitting direction.

15. The press-fitting device according to claim 1, characterized in that: The side wall of the second positioning portion and the outer side wall of the housing are spaced apart from each other by a preset gap distance in a horizontal direction perpendicular to the press-fitting direction.

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