Encasement device

Abstract

The utility model relates to the technical field of cylindrical battery production and provide a kind of into shell device.The utility model's into shell device is used to be loaded into to the battery shell inside roll core, this into shell device includes the device main body with shell fixed part and roll core accommodating cavity, roll core push plate is slidably arranged on device main body, and heating element is slidably arranged on roll core push plate;Shell fixed part is used to fix battery shell, roll core accommodating cavity is used to accommodate the roll core to be into shell, and roll core accommodating cavity is located at the side of shell fixed part, and it is coaxially arranged with battery shell;Heating element can be moved to battery shell inside along the axial direction of roll core accommodating cavity, and it is used to heat battery shell;Roll core push plate can push roll core from roll core accommodating cavity into battery shell inside.The utility model into shell device, by battery shell thermal expansion, can improve the smoothness of roll core into shell, and can reduce frictional resistance, reduce the risk of battery damage, to improve production efficiency and product yield.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical battery manufacturing technology, and in particular to an insert device. Background Technology

[0002] Cylindrical lithium batteries typically consist of two parts: a metal battery casing and a wound cell, also known as a core. One of the most critical steps in the production of cylindrical lithium batteries is accurately inserting the core into the battery casing and then sealing the battery casing.

[0003] In existing technologies, the winding core of cylindrical lithium batteries is typically pressed into the battery casing by external force during the casing insertion process. During this pressing process, significant frictional resistance is generated between the surface of the winding core and the inner wall of the battery casing, which can easily damage the cell. Moreover, considering the energy density requirements of the battery, the design gap between the winding core and the battery casing is usually small, making the winding core insertion operation more challenging. Slight carelessness can cause problems such as winding core jamming or casing scratches, seriously affecting production efficiency and product yield. Utility Model Content

[0004] In view of this, the present invention aims to provide a shell-insertion device to improve the smoothness of core insertion into the shell, thereby improving production efficiency and product yield.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A casing insertion device for inserting a core into a battery casing, the casing insertion device comprising a device body having a casing fixing part and a core receiving cavity, a core pusher plate slidably disposed on the device body, and a heating element slidably disposed on the core pusher plate;

[0007] The housing fixing part is used to fix the battery housing, and the core receiving cavity is used to receive the core to be inserted into the housing. The core receiving cavity is located on one side of the housing fixing part and is coaxially arranged with the battery housing in the fixed state.

[0008] The heating element can move axially along the core receiving cavity into the battery housing and is used to heat the battery housing;

[0009] The core pusher plate can move from the first end of the core receiving cavity to the second end of the core receiving cavity to push the core from the core receiving cavity into the battery housing.

[0010] Furthermore, the sidewall of the core receiving cavity is provided with rolling elements; the rolling elements are a plurality of elements arranged at intervals along the circumference of the core receiving cavity; and / or, the rolling elements are a plurality of elements arranged at intervals along the axial direction of the core receiving cavity.

[0011] Furthermore, the main body of the device is provided with a first driving component, the power output end of the first driving component is connected to the core pusher plate; the side wall of the core receiving cavity is provided with a guide groove, and the core pusher plate is slidably disposed in the guide groove under the drive of the first driving component.

[0012] Furthermore, the first drive assembly includes a first drive unit disposed on the main body of the device, a lead screw connected to the first drive unit, and a lead screw nut screwed onto the lead screw; the core pusher plate is fixedly connected to the lead screw nut.

[0013] Furthermore, the core pusher plate is provided with a through hole extending through its own thickness direction, and a guide rod is provided on one side of the core pusher plate; a movable plate is slidably provided on the guide rod, one end of the heating element is connected to the movable plate, and the other end of the heating element is slidably disposed in the through hole.

[0014] Furthermore, the core pusher plate is provided with a second driving component connected to the moving plate. The second driving component drives the moving plate to move along the guide rod and causes the heating element to slide in the through hole.

[0015] Furthermore, an anti-detachment structure is provided between the core pusher plate and the heating element, the anti-detachment structure being used to prevent the heating element from detaching from the through hole.

[0016] Furthermore, the housing fixing part includes a housing receiving cavity that communicates with the core receiving cavity, and the end of the housing receiving cavity away from the core receiving cavity constitutes a housing insertion end; the housing is inserted into the housing receiving cavity from the housing insertion end; an adsorption member is provided on the side wall of the housing receiving cavity, and the adsorption member can adsorb and fix the battery housing in the housing receiving cavity.

[0017] Furthermore, the adsorption elements are a plurality of elements arranged at axial intervals along the housing cavity; and / or, the adsorption elements are a plurality of elements arranged at circumferential intervals along the housing cavity.

[0018] Furthermore, the housing fixing part also includes a housing baffle that is slidably disposed on the main body of the device; the housing baffle is disposed near the housing loading end, and the housing baffle can be moved to the housing loading end and block the housing loading end.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] (1) The casing insertion device of this utility model, by setting a main body with a casing fixing part and a core receiving cavity, as well as a core pusher plate and a heating element, allows the heating element to move axially along the core receiving cavity into the battery casing to heat the battery casing. The battery casing expands due to heat, causing the inner diameter of the core receiving cavity to increase slightly. At this time, under the movement of the core pusher plate, the core can be smoothly pushed from the core receiving cavity into the battery casing, completing the core insertion. This method utilizes the thermal expansion of the battery casing to increase the gap between the battery casing and the core, which can improve the smoothness of core insertion and reduce frictional resistance, thereby reducing the risk of cell damage. At the same time, it can release the compressive stress between the electrode layers, increase the electrode gap, improve liquid absorption, and make the battery more compact, thus improving production efficiency and product yield.

[0021] (2) Rolling elements are provided on the side wall of the core receiving cavity so that the rolling elements contact the core surface, which can greatly reduce the frictional resistance when the core is pushed in and reduce the wear of the core surface. In addition, multiple rolling elements arranged at intervals along the circumference of the core receiving cavity can evenly support the core and prevent it from tilting; multiple rolling elements arranged at intervals along the axial direction of the core receiving cavity can guide the movement of the core along the axis and improve the accuracy of the core insertion.

[0022] (3) The first drive assembly is connected to the core pusher plate, and a guide groove is provided on the side wall of the core receiving cavity so that the core pusher plate slides in the guide groove. This can improve the automation of the core pusher plate movement on the one hand, and facilitate the guiding movement of the core pusher plate on the other hand, so that the core can be smoothly pushed into the battery housing.

[0023] (4) The first drive assembly includes a first drive unit, a lead screw and a lead screw nut. The lead screw has high transmission accuracy, which helps to ensure the consistency of the core insertion operation and also helps to improve production efficiency.

[0024] (5) The guide rod can provide an installation base for the moving plate and drive the heating element to slide along the axial direction of the through hole as the moving plate moves. This can guide the movement of the heating element and facilitate the smooth movement of the heating element into the battery housing.

[0025] (6) By setting the second drive component, the second drive component drives the moving plate to slide the heating element, which is conducive to realizing the automation of the movement of the heating element.

[0026] (7) The anti-detachment structure can effectively prevent the heating element from detaching from the through hole.

[0027] (8) By setting a housing cavity that is connected to the core housing cavity, it is beneficial to ensure the coaxiality of the battery housing and the core, and to facilitate the accurate insertion of the core into the housing. In addition, the set adsorption component can fix the battery housing, so that the battery housing is better fixed in the housing housing cavity, which also facilitates the smooth insertion of the core into the housing.

[0028] (9) Multiple adsorption elements are arranged at intervals along the axial direction of the housing cavity or at intervals along the circumferential direction of the housing cavity. Both can uniformly adsorb the outer wall of the battery housing, ensuring that the battery housing and the core cavity are coaxial, so that the core can be smoothly inserted into the housing.

[0029] (10) The housing baffle is set to block the housing insertion end, which can prevent the core from shifting due to the pushing force during the housing insertion process, and avoid the battery housing being pushed out of the housing cavity, thereby further ensuring the smooth insertion of the core. Attached Figure Description

[0030] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0031] Figure 1 This is a perspective view of the housing device described in an embodiment of the present utility model;

[0032] Figure 2 This is a cross-sectional view of the housing device described in an embodiment of the present utility model;

[0033] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0034] Figure 4 for Figure 2 Enlarged view of section B;

[0035] Figure 5 This is a structural diagram showing the working state of the core pusher plate and the main body of the device according to an embodiment of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main body of the device; 2. Miniature air pump; 3. Connecting rod; 4. Spring;

[0038] 10. Heating element; 11. Base; 12. Cover; 100. Core receiving cavity; 200. Housing receiving cavity; 101. Core pusher plate; 102. First drive assembly; 103. Housing baffle; 104. Third drive assembly; 105. Adsorption element; 106. Second drive assembly; 107. Battery; 100a. First end; 100b. Second end; 200a. Housing insertion end;

[0039] 1001 Heating wire; 1002 Limiting flange; 1011 Guide rod; 1012 Moving plate; 1013 Return spring; 1021 First drive unit; 1022 Lead screw; 1023 Lead screw nut; 1051 Electromagnet; 1061 Second motor; 1062 Rotating shaft; 1063 Rope; 1010 Limiting groove; 1101 Guide groove; 1201 Mounting cavity. Detailed Implementation

[0040] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] Furthermore, in the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0044] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0046] An embodiment of the first aspect of this utility model provides a casing insertion device for inserting a winding core into a battery casing, which can improve the smoothness of winding core insertion, thereby helping to improve production efficiency and product yield.

[0047] In existing technologies, the winding core of cylindrical lithium batteries is typically pressed into the battery casing by external force during the casing insertion process. During this pressing process, significant frictional resistance is generated between the surface of the winding core and the inner wall of the battery casing, which can easily damage the cell. Moreover, considering the energy density requirements of the battery, the design gap between the winding core and the battery casing is usually small, making the winding core insertion operation more challenging. Slight carelessness can cause problems such as winding core jamming or casing scratches, seriously affecting production efficiency and product yield.

[0048] In view of this, in order to overcome the shortcomings of the prior art, the housing device of this embodiment combines... Figure 1 and Figure 2 As shown, the overall design includes a device body 1 with a housing fixing part and a core receiving cavity 100, a core pusher plate 101 slidably disposed on the device body 1, and a heating element 10 slidably disposed on the core pusher plate 101.

[0049] The housing fixing part is used to fix the battery housing, and the core receiving cavity 100 is used to receive the core to be inserted into the housing. The core receiving cavity 100 is located on one side of the housing fixing part and is coaxially arranged with the fixed battery housing. The heating element 10 can move along the axial direction of the core receiving cavity 100 into the battery housing and is used to heat the battery housing. The core pusher plate 101 can move from the first end 100a of the core receiving cavity 100 to the second end 100b of the core receiving cavity 100 so as to push the core from the core receiving cavity 100 into the battery housing.

[0050] Therefore, by providing a device body 1 with a housing fixing part and a core receiving cavity 100, as well as a core pusher plate 101 and a heating element 10, the heating element 10 can move axially along the core receiving cavity 100 into the battery housing to heat the battery housing. The battery housing expands due to heat, causing the inner diameter of the core receiving cavity 100 to increase slightly. At this time, under the movement of the core pusher plate 101, the core can be smoothly pushed from the core receiving cavity 100 into the battery housing, completing the core insertion. This method utilizes the thermal expansion of the battery housing to increase the gap between the battery housing and the core, which can improve the smoothness of core insertion and reduce frictional resistance, reducing the risk of cell damage. At the same time, it can release the compressive stress between the electrode layers, increase the electrode gap, improve liquid absorption, and make the battery more compact, thereby improving production efficiency and product yield.

[0051] It is worth noting that when the heating element 10 heats the battery casing, it moves inside the battery casing and heats the air inside. This heat is then transferred to the battery casing, causing it to expand and its inner diameter to increase slightly. The heating temperature and time can be designed according to the characteristics of the battery casing material. The goal is to ensure reliable use of the battery casing while facilitating the smooth entry of the winding core after heating, thus allowing for easy access.

[0052] Based on the above overall introduction, specifically, combined with Figure 1 and Figure 2 As shown, the casing insertion device of this embodiment includes a device body 1. The device body 1 is provided with a casing fixing part for fixing the battery casing and a core receiving cavity 100 for accommodating the core to be inserted into the casing. A core pusher plate 101 is slidably provided on the device body 1, and a heating element 10 is slidably disposed on the core pusher plate 101. The core receiving cavity 100 is located on one side of the casing fixing part, and the core receiving cavity 100 is coaxially arranged with the battery casing fixed on the casing fixing part, which can improve the accuracy of core insertion into the casing.

[0053] Continue to combine Figure 1 and Figure 2 As shown, in some exemplary embodiments, rolling elements are provided on the sidewall of the core receiving cavity 100. These rolling elements are a plurality of elements spaced apart circumferentially along the core receiving cavity 100, and also a plurality of elements spaced apart axially along the core receiving cavity 100. In specific implementations, the rolling elements may be, for example, balls embedded and rolling on the sidewall of the core receiving cavity 100.

[0054] At this point, the rolling elements provided on the sidewall of the core receiving cavity 100, which contact the core surface, can significantly reduce the frictional resistance during core insertion and reduce wear on the cell surface. Furthermore, the multiple rolling elements spaced circumferentially along the core receiving cavity 100 can evenly support the core and prevent it from tilting, while the multiple rolling elements spaced axially along the core receiving cavity 100 can guide the core's movement along the axis, improving insertion accuracy.

[0055] It should be noted that, in addition to the multiple rolling elements arranged at intervals along the circumference of the core receiving cavity 100 and at intervals along the axial direction of the core receiving cavity 100 as described above, the rolling elements can also be arranged at intervals only along the circumference of the core receiving cavity 100 or at intervals only along the axial direction of the core receiving cavity 100. Such arrangement is also feasible.

[0056] Still refer to Figure 1 and Figure 2 and combined Figure 5 As shown, in some exemplary embodiments, for example, a first drive assembly 102 is provided on the main body 1 of the device, and the power output end of the first drive assembly 102 is connected to the core pusher plate 101. Furthermore, a guide groove 1101 is also provided on the side wall of the core receiving cavity 100, and the core pusher plate 101 is slidably disposed in the guide groove 1101 under the drive of the first drive assembly 102.

[0057] In the above structure, by setting the first driving component 102 to be connected to the core pusher plate 101, and setting the guide groove 1101 on the side wall of the core receiving cavity 100, the core pusher plate 101 is slidably disposed in the guide groove 1101. This can improve the automation of the movement of the core pusher plate 101 on the one hand, and facilitate the guiding movement of the core pusher plate 101 on the other hand, so that the core can be smoothly pushed into the battery casing.

[0058] Specifically, as an exemplary structure, the first drive assembly 102 includes a first drive unit 1021 disposed on the device body 1, a lead screw 1022 connected to the first drive unit 1021, and a lead screw nut 1023 screwed onto the lead screw 1022. The aforementioned core pusher plate 101 is fixedly connected to the lead screw nut 1023. The first drive unit 1021 may be, for example, a first motor. When the lead screw 1022 is arranged, its axial direction is aligned with the axial direction of the core receiving cavity 100. In specific implementation, the lead screw 1022 is rotatably disposed on the device body 1 via bearings at both ends, and one end of the lead screw 1022 is connected to the power output shaft of the first motor, thus enabling the lead screw 1022 to rotate under the drive of the first motor.

[0059] The screw nut 1023, which is screwed onto the screw 1022, is fixedly connected to the core pusher plate 101 and engages with the guide groove 1101 provided on the side wall of the core receiving cavity 100. This allows the rotation of the screw 1022 to drive the screw nut 1023 to move along the axial direction of the screw 1022, which in turn drives the core pusher plate 101 to move along the axial direction of the core receiving cavity 100. This enables the core pusher plate 101 to move between the first end 100a and the second end 100b of the core receiving cavity 100.

[0060] At this time, the first drive assembly 102 adopts the cooperation of the first drive part 1021, the lead screw 1022 and the lead screw nut 1023. The lead screw 1022 has high transmission accuracy, which helps to ensure the consistency of the core insertion operation and also helps to improve production efficiency.

[0061] Continue to combine Figure 1 , Figure 2 and Figure 5 As shown, in some exemplary embodiments, for example, a through hole extending through its thickness is provided on the core pusher plate 101, and a guide rod 1011 is provided on one side of the core pusher plate 101. A movable plate 1012 is slidably mounted on the guide rod 1011. One end of the heating element 10 is connected to the movable plate 1012, and the other end of the heating element 10 is slidably disposed in the through hole. The guide rod 1011 provided here can provide a mounting base for the movable plate 1012, and the movement of the movable plate 1012 can drive the heating element 10 to slide axially along the through hole. This can guide the movement of the heating element 10 and facilitate the smooth movement of the heating element 10 into the battery casing.

[0062] Specifically, there are two guide rods 1011 arranged at intervals, and the two guide rods 1011 are symmetrically arranged about the heating element 10. One end of the heating element 10 is fixedly connected to the moving plate 1012, and the other end of the heating element 10 is slidably disposed in the through hole on the core push plate 101.

[0063] To facilitate the automation of the movement of the heating element 10, combined with Figure 2 and Figure 4 As shown, in some exemplary embodiments, a second drive assembly 106 is provided on the core pusher plate 101. The power output end of the second drive assembly 106 is connected to the moving plate 1012. The second drive assembly 106 drives the moving plate 1012 to move along the guide rod 1011, and drives the heating element 10 to slide in the through hole. At this time, driven by the second drive assembly 106, the moving plate 1012 moves along the guide rod 1011, and drives the heating element 10 to move along the through hole, thereby facilitating the automation of the movement of the heating element 10.

[0064] Specifically, the second drive assembly 106 includes, for example, a second motor 1061 mounted on the main body 1, a shaft 1062 connected to the power output shaft of the second motor 1061, and a rope 1063. One end of the rope 1063 is wound around the shaft 1062, and the other end is fixed to the moving plate 1012. The second motor 1061 drives the shaft 1062 to rotate, causing the rope 1063 to wind up and pulling the moving plate 1012 towards... Figure 2 The leftward movement, as shown, simultaneously causes the heating element 10 to move to the left. To ensure the tension effect when the rope 1063 is released, a return spring 1013 is also provided between the core push plate 101 and the moving plate 1012 in this embodiment. When the rope 1063 is wound up, the moving plate 1012 moves to the left, and the return spring 1013 is compressed; when the rope 1063 is released, the moving plate 1012 moves in the opposite direction to return to its original position under the elastic force of the return spring 1013, that is, to... Figure 2 The movement is shown to the right.

[0065] To ensure the smooth movement of the moving plate 1012, in this embodiment, for example, the second motor 1061, the rotating shaft 1062, the rope 1063, and the return spring 1013 are arranged symmetrically about the heating element 10 in two sets. Furthermore, it is worth noting that, in addition to the above-described structure, the second drive assembly 106 can also employ a linear drive device such as a cylinder or hydraulic cylinder, which is also feasible.

[0066] In a specific implementation, the heating element 10 may be an electric heating rod, which contains a heating wire 1001. Heat is generated by energizing the heating wire 1001, and then conducted to the surface of the electric heating rod. The heat released by the electric heating rod exchanges with the air inside the battery casing, and then the heat is transferred to the battery casing, thereby heating the battery casing.

[0067] Refer to Figure 2 As shown, in some exemplary embodiments, an anti-detachment structure is provided between the core pusher plate 101 and the heating element 10. The anti-detachment structure is used to prevent the heating element 10 from detaching from the through hole. By providing the anti-detachment structure, the heating element 10 can be effectively prevented from detaching from the through hole.

[0068] Specifically, the anti-detachment structure includes a limiting groove 1010 formed on the end face of the core pusher plate 101 and a limiting flange 1002 formed on the end of the heating element 10. The outer diameter of the limiting flange 1002 is larger than the outer diameter of other positions of the heating element 10. One end of the heating element 10 is inserted from the right side of the core pusher plate 101 and extends and is fixedly connected to the moving plate 1012. Thus, when the heating element 10 moves to the right, the limiting flange 1002 can be engaged in the limiting groove 1010, thereby preventing the heating element 10 from detaching from the through hole.

[0069] Combination Figures 1 to 3 As shown, in some exemplary embodiments, the housing fixing part includes a housing receiving cavity 200 communicating with the core receiving cavity 100, and the end of the housing receiving cavity 200 away from the core receiving cavity 100 constitutes a housing insertion end 200a. The housing is inserted into the housing receiving cavity 200 from the housing insertion end 200a, and an adsorption member 105 is provided on the side wall of the housing receiving cavity 200, which can adsorb and fix the battery housing in the housing receiving cavity 200.

[0070] In this structure, by setting a housing cavity 200 that is connected to the core housing cavity 100, it is beneficial to ensure the coaxiality of the battery housing and the core, and to facilitate the precise insertion of the core into the housing. Furthermore, the adsorption component 105 can fix the battery housing, so that the battery housing is well fixed in the housing cavity 200, which also facilitates the smooth insertion of the core into the housing.

[0071] Specifically, the main body 1 of the device includes, for example, a base 11 and a cover 12 detachably connected to the base 11. The cover 12 and the base 11 together define a housing cavity 200 and a core cavity 100. In this way, by forming a portion of the sidewalls of the housing cavity 200 and the core cavity 100 together on the inner surface of the cover 12, it is beneficial to ensure the coaxial accuracy of the housing cavity 200 and the core cavity 100, thereby improving the smoothness of core insertion into the housing.

[0072] Combined Figure 2 and Figure 3 As shown, in some exemplary embodiments, the adsorption members 105 are, for example, a plurality of adsorption members 105 arranged at axial intervals along the housing cavity 200, and also a plurality of adsorption members 105 arranged at circumferential intervals along the housing cavity 200. In this case, by providing a plurality of adsorption members 105 in the axial and circumferential directions of the housing cavity 200, the outer wall of the battery housing can be uniformly adsorbed, ensuring that the battery housing and the core housing cavity 100 are coaxial, so that the core can be smoothly inserted into the housing.

[0073] Among them, further combination Figure 2 and Figure 3 As shown, each adsorption component 105 is specifically configured, for example, by providing an installation cavity 1201 on the side wall of the housing cavity 200. A miniature air pump 2 is installed within the installation cavity 1201, and two spaced-apart connecting rods 3 and two corresponding springs 4 are provided within the installation cavity 1201. One end of each spring 4 is fixedly connected to the side wall of the housing cavity 200, and the other end of each spring 4 is fixedly connected to the end of the corresponding connecting rod 3. The aforementioned adsorption component 105 is fixedly connected to the ends of the two connecting rods 3 furthest from the springs 4. Furthermore, an electromagnet 1051 is fixedly installed within the adsorption component 105.

[0074] In practical use, due to gravity, the lower surface of the adsorption component 105 is exposed and extends into the housing cavity 200. Before the battery housing is installed into the housing cavity 200, the air above the adsorption component 105 in the mounting cavity 1201 is evacuated by the micro air pump 2. This causes the adsorption component 105 to move into the side wall of the housing cavity 200 under the pressure difference on both sides, thus retracting the lower surface of the adsorption component 105 before the battery housing is installed. When the battery housing needs to be fixed after installation, the electromagnet 1051 inside the adsorption component 105 is energized, and the magnetic force of the magnetic adsorption component fixes the battery housing. After the winding core is installed in the battery housing, the electromagnet 1051 is de-energized, the adsorption component 105 releases its fixation to the battery housing, and then drives the battery housing to move in the opposite direction of the installation direction and is pushed out of the housing cavity 200.

[0075] It is worth mentioning here that, in addition to the above-mentioned structural form, the adsorption component 105 can also be a vacuum suction cup or an electromagnetic suction cup fixedly installed on the side wall of the housing cavity 200, and the battery housing can be adsorbed by the vacuum suction cup or the electromagnetic suction cup. Such a setting is also possible.

[0076] It is also worth mentioning that, in addition to being a plurality of adsorption elements 105 arranged at intervals along both the axial and circumferential directions of the housing cavity 200, they can also be a plurality of elements arranged at intervals along the axial direction of the housing cavity 200, or a plurality of elements arranged at intervals along the circumferential direction of the housing cavity 200. Such arrangements are also acceptable.

[0077] Combination Figure 1 and Figure 2 As shown, in some exemplary embodiments, the housing fixing part further includes, for example, a housing baffle 103 slidably disposed on the device body 1. The housing baffle 103 is disposed near the housing loading end 200a and is movable to the housing loading end 200a to block the housing loading end 200a.

[0078] At this time, the housing baffle 103, which blocks the housing insertion end 200a, can prevent the core from shifting due to the pushing force during the housing insertion process, and avoid the battery housing being pushed out of the housing receiving cavity 200, thereby further ensuring the smooth insertion of the core.

[0079] In a specific implementation, for example, a third drive assembly 104 connected to the housing baffle 103 is provided on the main body 1 of the device to drive the housing baffle 103 to move closer to or away from the housing loading end 200a. The third drive assembly 104 includes, for example, a linear guide rail, and the housing baffle 103 is slidably disposed on the power output end of the linear guide rail. Driven by the power of the linear guide rail, the housing baffle 103 can move closer to or away from the housing loading end 200a. At this time, the arrangement of the linear guide rail also helps to improve the degree of automation of the movement of the housing baffle 103.

[0080] In addition, in this embodiment, the main body 1 of the device is also provided with a storage battery 107 and a controller, etc. The storage battery 107 is used to provide power to the heating element 10. The heating element 10, the first drive unit 1021, the second drive unit, etc. are all connected to the controller in the existing technology in order to improve the degree of automation.

[0081] It is worth noting that, regarding the housing device of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 5 As shown, it includes a device body 1 having a housing fixing part and a core receiving cavity 100, a core pusher plate 101 slidably disposed on the device body 1, and a heating element 10 slidably disposed on the core pusher plate 101. The core receiving cavity 100 is located on one side of the housing fixing part, and the core receiving cavity 100 is coaxially disposed with the battery housing fixed on the housing fixing part. The heating element 10 can move along the axial direction of the core receiving cavity 100 into the battery housing and can heat the battery housing. The core pusher plate 101 can push the core from the core receiving cavity 100 into the battery housing.

[0082] Rolling elements are provided on the side wall of the core receiving cavity 100. Multiple rolling elements are arranged at intervals along the circumference of the core receiving cavity 100, and multiple rolling elements are also arranged at intervals along the axial direction of the core receiving cavity 100.

[0083] The device body 1 is provided with a first drive assembly 102, the power output end of which is connected to the core pusher plate 101. The side wall of the core receiving cavity 100 is provided with a guide groove 1101, and the core pusher plate 101 is slidably disposed in the guide groove 1101 under the drive of the first drive assembly 102. Preferably, the first drive assembly 102 includes a first drive part 1021 disposed on the device body 1, a lead screw 1022 connected to the first drive part 1021, and a lead screw nut 1023 screwed onto the lead screw 1022. The core pusher plate 101 is fixedly connected to the lead screw nut 1023.

[0084] The core pusher plate 101 also has a through hole extending through its thickness. A guide rod 1011 is provided on one side of the core pusher plate 1011, and a movable plate 1012 is slidably mounted on the guide rod 1011. One end of the heating element 10 is fixedly connected to the movable plate 1012, and the other end of the heating element 10 is slidably disposed in the through hole. Simultaneously, a second drive assembly 106 connected to the movable plate 1012 is provided on the core pusher plate 101. The second drive assembly 106 drives the movable plate 1012 to move along the guide rod 1011, thereby causing the heating element 10 to slide within the through hole. Furthermore, an anti-detachment structure is provided between the core pusher plate 101 and the heating element 10 to prevent the heating element 10 from detaching from the through hole.

[0085] The housing fixing part includes a housing receiving cavity 200, which is coaxially arranged and connected with the core receiving cavity 100. The end of the housing receiving cavity 200 away from the core receiving cavity 100 forms a housing insertion end 200a. The housing is inserted into the housing receiving cavity 200 from the housing insertion end 200a. An adsorption member 105 is provided on the side wall of the housing receiving cavity 200, which can adsorb and fix the battery housing in the housing receiving cavity 200.

[0086] Multiple adsorption elements 105 are arranged at intervals along the axial direction of the housing cavity 200, and multiple adsorption elements 105 are also arranged at intervals along the circumferential direction of the housing cavity 200.

[0087] The housing fixing part also includes a housing baffle 103 that is slidably disposed on the main body 1 of the device; the housing baffle 103 is disposed near the housing loading end 200a, and the housing baffle 103 can move to the housing loading end 200a and block the housing loading end 200a.

[0088] In the above preferred embodiments, the specific configuration and arrangement of the housing fixing part, heating element 10, rolling element, first driving assembly 102, second driving assembly 106, adsorption element 105, and housing baffle 103 can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the housing fixing part, heating element 10, rolling element, first driving assembly 102, second driving assembly 106, adsorption element 105, and housing baffle 103 can also be referred to the descriptions in the above exemplary embodiments.

[0089] In this embodiment, the battery housing insertion device, during actual use, firstly, ensures that the housing baffle 103 is in an unsealed state at the housing insertion end 200a, meaning that the housing insertion end 200a at one end of the housing receiving cavity 200 is open. At this time, the battery housing is inserted into the housing receiving cavity 200 through the housing insertion end 200a. Next, the housing baffle 103 is moved by a third drive, causing the housing baffle 103 to seal at the housing insertion end 200a. Then, the battery housing is fixed by the suction member 105, ensuring the relative position of the battery housing.

[0090] Next, the first drive assembly 102 drives the core pusher plate 101 to move from the first end 100a to the second end 100b. At the second end 100b, the second drive assembly 106 drives the moving plate 1012 to move along the guide rod 1011, causing the heating element 10 to move axially along the core receiving cavity 100 and extend into the fixed battery casing. Then, the heating element 10 is energized and heats the battery casing. After heating is completed, the moving plate 1012 moves in the opposite direction under the drive of the second drive assembly 106, the heating element 10 resets, and the core pusher plate 101 moves from the second end 100b to the first end 100a and away from the first end 100a, so that the core can be loaded into the core receiving cavity 100.

[0091] Then, the core to be housed is inserted into the core receiving cavity 100, and driven by the first driving component 102, the core pusher 101 pushes the core from the core receiving cavity 100 into the battery housing. After the core is in place, the adsorption member 105 releases its fixation on the battery housing, and the housing baffle 103 located at the housing loading end 200a releases its blockage on the housing loading end 200a. At this time, the first driving component 102 continues to push the core and move the housing together from the housing loading end 200a out of the housing receiving cavity 200. Then, driven by the first driving component 102, the core pusher 101 moves in the opposite direction to the outside of the core receiving cavity 100, thus completing the core installation operation.

[0092] The casing insertion device in this embodiment adopts the above design. By utilizing the thermal expansion of the battery casing, the gap between the battery casing and the core is widened, which can improve the smoothness of core insertion and reduce frictional resistance, thereby reducing the risk of cell damage. At the same time, it can release the compressive stress between the electrode layers, increase the gap between the electrode layers, improve liquid absorption, and make the battery more compact, thus helping to improve production efficiency and product yield.

[0093] The above descriptions are merely some embodiments of this utility model and are not intended to limit the utility model. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A casing insertion device for inserting a winding core into a battery casing, characterized in that: The housing device includes a main body having a housing fixing part and a core receiving cavity, a core pusher plate slidably disposed on the main body, and a heating element slidably disposed on the core pusher plate; The housing fixing part is used to fix the battery housing, and the core receiving cavity is used to receive the core to be inserted into the housing. The core receiving cavity is located on one side of the housing fixing part and is coaxially arranged with the battery housing in the fixed state. The heating element can move axially along the core receiving cavity into the battery housing and is used to heat the battery housing; The core pusher plate can move from the first end of the core receiving cavity to the second end of the core receiving cavity so as to push the core from the core receiving cavity into the battery housing.

2. The insertion device according to claim 1, characterized in that: The side wall of the core receiving cavity is provided with a rolling element; The rolling elements are a plurality of elements arranged circumferentially at intervals along the core receiving cavity; and / or, the rolling elements are a plurality of elements arranged axially at intervals along the core receiving cavity.

3. The insertion device according to claim 1, characterized in that: The main body of the device is provided with a first drive component, and the power output end of the first drive component is connected to the core pusher plate. The side wall of the core receiving cavity is provided with a guide groove, and the core pusher plate is slidably disposed in the guide groove under the drive of the first drive assembly.

4. The casing insertion device according to claim 3, characterized in that: The first drive assembly includes a first drive unit disposed on the main body of the device, a lead screw connected to the first drive unit, and a lead screw nut screwed onto the lead screw; The core pusher plate is fixedly connected to the lead screw nut.

5. The casing insertion device according to claim 1, characterized in that: The core pusher plate is provided with a through hole extending through its own thickness direction, and a guide rod is provided on one side of the core pusher plate; A movable plate is slidably mounted on the guide rod, one end of the heating element is connected to the movable plate, and the other end of the heating element is slidably mounted in the through hole.

6. The casing insertion device according to claim 5, characterized in that: The core pusher plate is provided with a second drive assembly connected to the moving plate. The second drive assembly drives the moving plate to move along the guide rod and causes the heating element to slide in the through hole.

7. The casing insertion device according to claim 6, characterized in that: An anti-detachment structure is provided between the core pusher plate and the heating element, which is used to prevent the heating element from detaching from the through hole.

8. The insertion device according to any one of claims 1 to 7, characterized in that: The housing fixing part includes a housing receiving cavity that communicates with the core receiving cavity, and the end of the housing receiving cavity away from the core receiving cavity constitutes a housing insertion end; The housing is loaded into the housing accommodating cavity from the housing loading end; The side wall of the housing cavity is provided with an adsorption element, which can adsorb and fix the battery housing in the housing cavity.

9. The casing insertion device according to claim 8, characterized in that: The adsorption elements are a plurality of those arranged at axial intervals along the axial direction of the housing cavity; and / or, The adsorption elements are a plurality of those arranged at circumferential intervals along the accommodating cavity of the housing.

10. The casing insertion device according to claim 8, characterized in that: The housing fixing part also includes a housing baffle that is slidably disposed on the main body of the device; The housing baffle is located near the housing insertion end, and the housing baffle can be moved to the housing insertion end and block the housing insertion end.

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