An electric core piercing device with radial needle constraining

Abstract

The utility model relates to a kind of electric core hole burning device with needle radial constraint, comprising: needle assembly, including rotary drive and eccentric needle, the rotary drive connects the eccentric needle to drive eccentric needle rotation around its axis;And radial constraint component, it is set on the outer periphery of the eccentric needle, for the radial constraint of the eccentric needle is carried out constraint.This utility model can be compatible with the incoming material electric core with small center hole size, radial constraint component can be when eccentric needle rotates, the radial constraint of eccentric needle is carried out constraint, to effectively control eccentric needle when rotating, avoid hole position deviation and aperture out of round.

Description

Technical Field

[0001] This utility model relates to the field of battery processing, and more specifically, to a battery cell hot-hole device with radial constraint of hot-spinning needles. Background Technology

[0002] In the manufacturing process of cylindrical battery cells, to ensure that the core rod can be accurately inserted into the center hole of the core, the center hole needs to be shaped in advance through a hot-drilling process. The current hot-drilling method usually involves rotating a heated hot-drilling needle into the center hole of the battery cell. For cores with smaller hole diameters, the existing hot-drilling needle structure cannot be matched, resulting in poor hot-drilling effect. Furthermore, the existing hot-drilling needle lacks effective restraint and is prone to radial runout during rotation, leading to hole position displacement or out-of-roundness of the hole diameter. Utility Model Content

[0003] The purpose of this invention is to provide a battery cell hot-drilling device with radial constraint of hot-drilling needle, which can be compatible with incoming battery cells with small center hole size and can prevent the hot-drilling needle from wobbling when rotating, thus ensuring the quality of hot-drilling.

[0004] A battery cell hot-drilling device with radial constraint of hot-drilling needle includes: a hot-drilling needle assembly, including a rotary drive and an eccentric hot-drilling needle, the rotary drive being connected to the eccentric hot-drilling needle to drive the eccentric hot-drilling needle to rotate around its own axis; and a radial constraint assembly, sleeved on the outer periphery of the eccentric hot-drilling needle, for constraining the radial direction of the eccentric hot-drilling needle.

[0005] In the above technical solution, by employing an eccentric hot stamping needle, the needle can perform hot stamping in an eccentric rotation manner, ensuring the hot stamping effect. The radial constraint component can constrain the radial direction of the eccentric hot stamping needle when it rotates, thereby effectively controlling the sway of the eccentric hot stamping needle during rotation and avoiding hole position displacement and out-of-roundness of the hole diameter.

[0006] Furthermore, the radial constraint assembly includes a sleeve and an elastic floating assembly. The sleeve is movably fitted around the outer periphery of the eccentric hot-pressing needle, and the elastic floating assembly is connected to the sleeve so that the sleeve can elastically float along the axial direction of the eccentric hot-pressing needle.

[0007] In the above technical solution, the sleeve cooperates with the elastic floating component, and the inner circumferential wall of the sleeve and the eccentric hot-pressing needle form a radial limit, effectively restraining the sway of the eccentric hot-pressing needle during rotation. The elastic floating component can float vertically under pressure, thereby dynamically adjusting the relative height between the sleeve and the eccentric hot-pressing needle. This allows the hot-pressing needle to be inserted into the center hole while maintaining the stability of the needle's rotation, improving the hot-pressing accuracy, as well as the processing compatibility and reliability of small-diameter cores.

[0008] Furthermore, the elastic floating component includes a fixed base, a slider slidably connected to the fixed base, a connector connecting the slider and the sleeve, and an elastic element disposed between the fixed base and the slider.

[0009] In the above technical solution, the slider can slide relative to the fixed seat and is connected to the sleeve through a connector, realizing the axial floating guidance of the sleeve. By setting an elastic element, the sleeve can be elastically reset, ensuring the stability of the fit between the sleeve and the eccentric hot-pressing needle.

[0010] Furthermore, the fixed base is provided with a slide rail extending in a vertical direction, and the slider is slidably connected to the slide rail.

[0011] In the above technical solution, the slide rail can constrain the slider to slide only in the vertical direction, ensuring that the axis of the sleeve and the eccentric hot-pressing needle always remain parallel, thus enhancing the reliability of the structure.

[0012] Furthermore, the hot iron assembly also includes a mounting base that can slide in a vertical direction, and the rotary drive is disposed on the mounting base.

[0013] In the above technical solution, the vertically sliding mounting base allows the overall height of the rotary drive component and the eccentric hot-pressing needle to be adjustable, meeting the processing needs of the hot-pressing needle for battery cells in different positions.

[0014] Furthermore, the mounting base is provided with a pressure sensing component, which is used to monitor the pressure of the eccentric heating needle.

[0015] In the above technical solution, the pressure sensing component can directly monitor the pressure change of the eccentric hot heat needle and provide real-time feedback on the contact status of the eccentric hot heat needle, preventing excessive pressure from damaging the core or the eccentric hot heat needle.

[0016] Furthermore, the hot-fixing needle assembly includes a heating base, which contains a plurality of heating tubes, and the eccentric hot-fixing needle rotatably passes through the heating base.

[0017] In the above technical solution, multiple heating tubes can heat the eccentric heating needle, so that the eccentric heating needle is heated evenly. At the same time, the eccentric heating needle rotates through the heating base, ensuring that the eccentric heating needle can still rotate freely when heated.

[0018] Furthermore, the elastic floating component is mounted on the heating base.

[0019] In the above technical solution, the installation of the elastic floating component on the heating base can shorten the distance between the sleeve and the eccentric heating needle, making the structure more compact and reasonable.

[0020] Furthermore, the heat-sensing needle assembly includes a temperature-sensing head, the end of which is adjacent to the eccentric heat-sensing needle, and the temperature-sensing head is used to sense the temperature of the eccentric heat-sensing needle.

[0021] In the above technical solution, the temperature sensor is positioned near the eccentric heating pin, which is beneficial for accurately sensing the surface temperature change of the eccentric heating pin and realizing temperature control of the eccentric heating pin.

[0022] Furthermore, it also includes a drive mechanism connected to the hot iron assembly, the drive mechanism being used to drive the hot iron assembly to move in the horizontal and vertical directions.

[0023] In the above technical solution, the drive mechanism can flexibly adjust the position of the hot-pressing needle assembly to adapt to the processing needs of different positions.

[0024] Compared with the prior art, the beneficial effects of this utility model are: by using an eccentric hot stamping needle, the hot stamping needle can perform hot stamping in an eccentric rotation manner, ensuring the hot stamping effect. The radial constraint component can constrain the radial direction of the eccentric hot stamping needle when it rotates, thereby effectively controlling the sway of the eccentric hot stamping needle during rotation and avoiding hole position displacement and hole diameter out-of-roundness. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the battery cell hot-hole device with radial constraint of hot-burning needle according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the hot-fixing needle assembly and the radial constraint assembly according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the radial constraint component according to an embodiment of the present invention.

[0028] Explanation of icon numbers:

[0029] The components include: 1. Hot heat needle assembly; 11. Rotary drive component; 12. Eccentric hot heat needle; 13. Mounting base; 14. Pressure sensing component; 15. Plate; 16. Heating base; 17. Heating tube; 18. Temperature sensor; 2. Radial constraint component; 21. Sleeve; 22. Elastic floating component; 221. Fixing base; 222. Slider; 223. Connector; 224. Elastic component; 225. Slide rail; 3. Drive mechanism; 31. First drive module; 32. Second drive module. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] Please refer to Figure 1 In a preferred embodiment, the battery cell hot-drilling device with radial constraint of the hot-drilling needle of this utility model mainly includes a hot-drilling needle assembly 1 and a radial constraint assembly 2. The hot-drilling needle assembly 1 includes a rotation drive 11 and an eccentric hot-drilling needle 12. The rotation drive 11 is connected to the eccentric hot-drilling needle 12 to drive the eccentric hot-drilling needle 12 to rotate around its own axis. The radial constraint assembly 2 is sleeved on the outer periphery of the eccentric hot-drilling needle 12 and is used to constrain the radial direction of the eccentric hot-drilling needle 12.

[0033] Specifically, the radial constraint component 2 includes a sleeve 21 and an elastic floating component 22. The sleeve 21 is movably fitted around the outer periphery of the eccentric hot heat needle 12. The elastic floating component 22 is connected to the sleeve 21 so that the sleeve 21 can elastically float along the axial direction of the eccentric hot heat needle 12. The sleeve 21 is used to constrain the eccentric hot heat needle 12 radially through its inner periphery.

[0034] For example, the rotary drive 11 can be an existing rotary drive device, such as a motor, whose output end is connected to the eccentric heatsink 12. It should be noted that the axis of the eccentric heatsink 12, i.e., the axis of the needle tip, does not coincide with the axis of rotation of the heatsink. When the rotary drive device drives the eccentric heatsink to rotate, the eccentric heatsink 12 heats the center hole of the core through the outer diameter of the rotating needle tip. That is, the heatsink performs heatsinking in an eccentric rotation manner, so that the eccentric heatsink 12 can effectively match the core with a small hole diameter and improve the heatsinking effect.

[0035] The sleeve 21 cooperates with the elastic floating component 22. The sleeve 21 is coaxial with the rotation axis of the eccentric hot-pressing needle 12 and has a clearance fit with the outer circumference of the eccentric hot-pressing needle 12. The clearance fit between the inner circumference of the sleeve 21 and the eccentric hot-pressing needle 12 forms a radial limit, which can effectively restrain the sway of the eccentric hot-pressing needle 12 during rotation, avoiding hole position displacement and hole diameter out-of-roundness. The elastic floating component 22 can float vertically under pressure, thereby dynamically adjusting the relative height between the sleeve 21 and the eccentric hot-pressing needle 12. While allowing the hot-pressing needle to be inserted into the center hole, it maintains the stability of the hot-pressing needle rotation, improves the hot-pressing accuracy, and enhances the processing compatibility and reliability of small-diameter cores.

[0036] Please refer to Figure 2 and Figure 3The elastic floating assembly 22 includes a fixed base 221, a slider 222 slidably connected to the fixed base 221, a connector 223 connecting the slider 222 and the sleeve 21, and an elastic element 224 disposed between the fixed base 221 and the slider 222. For example, the fixed base 221 is fixedly disposed, the slider 222 can slide vertically relative to the fixed base 221, and the connector 223 is elongated, with its two ends connected to the slider 222 and the sleeve 21 respectively. The elastic element 224 can be a spring, and a guide shaft extending vertically is provided between the connector 223 and the fixed base 221, with the elastic element 224 sleeved on the outer periphery of the guide shaft. The slider 222 can slide relative to the fixed base 221 and is connected to the sleeve 21 via the connector 223, thus guiding the sleeve 21 to float axially. By providing the elastic element 224, the sleeve 21 can be elastically reset, ensuring the stability of the fit between the sleeve 21 and the eccentric hot-pressing needle 12.

[0037] In this embodiment, the fixed base 221 is provided with a slide rail 225 extending in the vertical direction, and the slider 222 is slidably connected to the slide rail 225. By setting the slide rail 225, the slider 222 can be constrained to slide only in the vertical direction, ensuring that the axis of the sleeve 21 and the eccentric heating pin 12 always remain parallel, thereby enhancing the reliability of the structure.

[0038] The hot-pressing needle assembly 1 also includes a mounting base 13 that can slide vertically, and a rotary drive 11 is disposed on the mounting base 13. For example, the mounting base 13 is disposed on a plate 15, and the plate 15 has a guide rail extending vertically. The mounting base 13 is slidably connected to the guide rail, and the rotary drive 11 is fixedly disposed on the mounting base 13, with its output end passing vertically downward through the mounting base 13 and connected to the eccentric hot-pressing needle 12. The vertically sliding mounting base 13 allows the overall height of the rotary drive 11 and the eccentric hot-pressing needle 12 to be adjusted, meeting the processing requirements of the hot-pressing needle for battery cells at different positions.

[0039] In this embodiment, the mounting base 13 is provided with a pressure sensing component 14, which is used to monitor the pressure of the eccentric heatsink 12. For example, the pressure sensing component 14 can be an existing pressure sensing device, specifically mounted on the sliding structure of the mounting base 13. When the eccentric heatsink 12 heats holes, its pressure is transmitted to the mounting base 13. By sensing the sliding pressure of the mounting base 13, the real-time pressure of the eccentric heatsink 12 can be determined. The pressure sensing component 14 can directly monitor the pressure changes of the eccentric heatsink 12, providing real-time feedback on the contact state of the eccentric heatsink 12 and preventing excessive pressure from damaging the core or the eccentric heatsink 12.

[0040] The heating pin assembly 1 includes a heating base 16, within which a plurality of heating tubes 17 are disposed. An eccentric heating pin 12 rotatably passes through the heating base 16. Exemplarily, the heating base 16 is located below the mounting base 13, and the eccentric heating pin 12 passes through the heating base 16 from top to bottom. The heating tubes 17 are fixedly disposed on the heating base 16 and close to the eccentric heating pin 12. The plurality of heating tubes 17 can heat the eccentric heating pin 12, so that the eccentric heating pin 12 is heated evenly. At the same time, the eccentric heating pin 12 rotatably passes through the heating base 16, ensuring that the eccentric heating pin 12 can still rotate freely in the heating state.

[0041] In this embodiment, the elastic floating component 22 is mounted on the heating base 16. By mounting the elastic floating component 22 on the heating base 16, the distance between the sleeve 21 and the eccentric heating needle 12 can be shortened, making the structure more compact and reasonable.

[0042] The heat-sensing needle assembly 1 includes a temperature sensing head 18, the end of which is adjacent to the eccentric heat-sensing needle 12. The temperature sensing head 18 is used to sense the temperature of the eccentric heat-sensing needle 12. The temperature sensing head 18 can be an existing temperature sensing device. The proximity of the temperature sensing head 18 to the eccentric heat-sensing needle 12 facilitates accurate sensing of surface temperature changes of the eccentric heat-sensing needle 12, thereby achieving temperature control of the eccentric heat-sensing needle 12.

[0043] The electrode hot-filling device with radial constraint of the hot-filling needle of this utility model also includes a drive mechanism 3, which is connected to the hot-filling needle assembly 1 and is used to drive the hot-filling needle assembly 1 to move. The drive mechanism 3 can flexibly adjust the position of the hot-filling needle assembly 1 to adapt to the processing requirements of different positions of the electrode.

[0044] Specifically, the drive mechanism 3 includes a first drive module 31 and a second drive module 32. The first drive module 31 drives the heat-pressing needle assembly 1 to move horizontally, and the second drive module 32 drives the heat-pressing needle assembly 1 to move vertically. Both the first drive module 31 and the second drive module 32 can be existing linear drive devices, such as single-axis servo motors. The first drive module 31 and the second drive module 32 drive the heat-pressing needle assembly 1 to move horizontally and vertically respectively, ensuring the flexibility of the heat-pressing needle assembly 1's movement.

[0045] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for heating holes in a battery cell with radial constraint of heating needles, characterized in that, include: A hot stamping needle assembly (1) includes a rotary drive (11) and an eccentric hot stamping needle (12), the rotary drive (11) being connected to the eccentric hot stamping needle (12) to drive the eccentric hot stamping needle (12) to rotate about its own axis; and A radial constraint component (2) is fitted around the outer periphery of the eccentric hot iron (12) to constrain the radial direction of the eccentric hot iron (12).

2. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 1, characterized in that, The radial constraint component (2) includes a sleeve (21) and an elastic floating component (22). The sleeve (21) is movably fitted around the outer periphery of the eccentric hot iron (12). The elastic floating component (22) is connected to the sleeve (21) so that the sleeve (21) can elastically float along the axial direction of the eccentric hot iron (12).

3. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 2, characterized in that, The elastic floating component (22) includes a fixed base (221), a slider (222) slidably connected to the fixed base (221), a connector (223) connecting the slider (222) and the sleeve (21), and an elastic element (224) disposed between the fixed base (221) and the slider (222).

4. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 3, characterized in that, The fixed base (221) is provided with a slide rail (225) extending in the vertical direction, and the slider (222) is slidably connected to the slide rail (225).

5. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 1, characterized in that, The hot iron assembly (1) also includes a mounting base (13) that can slide in the vertical direction, and the rotary drive (11) is disposed on the mounting base (13).

6. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 5, characterized in that, The mounting base (13) is provided with a pressure sensing component (14), which is used to monitor the pressure of the eccentric hot iron (12).

7. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 2, characterized in that, The hot heat needle assembly (1) includes a heating base (16), which is provided with a plurality of heating tubes (17), and the eccentric hot heat needle (12) can rotatably pass through the heating base (16).

8. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 7, characterized in that, The elastic floating component (22) is mounted on the heating base (16).

9. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 1, characterized in that, The heat-sensing needle assembly (1) includes a temperature sensing head (18), the end of which is adjacent to the eccentric heat-sensing needle (12), and the temperature sensing head (18) is used to sense the temperature of the eccentric heat-sensing needle (12).

10. The battery cell hot-hole device with radial constraint of hot-burning needles according to claim 1, characterized in that, It also includes a drive mechanism (3), which is connected to the hot iron assembly (1) and is used to drive the hot iron assembly (1) to move in the horizontal and vertical directions.

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