Pole piece iron removal mechanism

Abstract

The pole piece iron removal mechanism comprises connecting blocks, a movable driving device, two limiting adjusting assemblies, a magnetic rod and a scale, the two ends of the magnetic rod are in transmission connection with the movable driving device through the connecting blocks correspondingly, and the two limiting adjusting assemblies are movably arranged at the tops of the two connecting blocks correspondingly; the magnetic bar is composed of a magnetic core and a non-magnetic metal material wrapping the magnetic core, the magnetic core comprises a first magnet, a magnetic conductive sheet and a second magnet, the first magnet and the second magnet are opposite in magnetism, and the N pole of the first magnet and the N pole of the second magnet are in contact with the two outer sides of the magnetic conductive sheet respectively. The magnetic lines of force of the first magnet and the second magnet flow from the N pole to the S pole and form a strong magnetic surface above the edge of the magnetic conductive sheet. When the pole piece passes above the magnetic bar and passes through a strong magnetic surface formed by the magnetic conductive sheet, the first magnet and the second magnet, the adsorption capacity of the magnetic bar is remarkably enhanced, magnetic impurities on the pole piece can be effectively adsorbed by the magnetic bar, a good iron removal effect is achieved, and the quality and the performance of the pole piece are improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery pole piece production, and more specifically to a pole piece iron removal mechanism. Background Art

[0002] During the production process of battery poles, the battery poles may be contaminated by tiny iron powder and other metal impurities generated by the production process and environment or equipment wear during coating, rolling and punching. Some of these impurities will adhere to the pole pieces, which may easily lead to internal short circuit, spontaneous combustion, and even explosion risks in the battery, affecting the safety and reliability of the battery and reducing the performance and life of the battery. Therefore, it is necessary to remove the magnetic material on the surface of the pole pieces, which will help improve the energy density and charge and discharge efficiency of the battery, thereby improving the overall performance and life of the battery.

[0003] However, in the existing solutions for cleaning magnetic materials on the surface of pole pieces, such as the iron removal mechanism for lithium battery pole pieces disclosed in application announcement number CN218532137U, the patent adopts two cylindrical magnetic bars, and the position adjustment is not flexible enough. The magnetic bars are permanent magnets, and the magnetic impurities on the pole pieces are adsorbed on both sides by the magnetism of the magnetic bars themselves, but they are easy to cause certain magnetic field interference to surrounding electronic equipment or other magnetic components. In addition, the two magnetic bars are easy to increase the overall weight, the cost is high, and under the condition of space limitation, the overall mobility and installation convenience are affected. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a pole piece iron removal mechanism with strong adsorption capacity, which can effectively adsorb magnetic impurities on the pole piece, achieve good iron removal effect, and greatly improve the quality and performance of the battery pole piece.

[0005] To achieve the above-mentioned purpose, the present invention provides a pole piece iron removal mechanism, including a connecting block, a mobile drive device, a limit adjustment component, a magnetic bar and a ruler, wherein two mobile drive devices are provided and are arranged opposite to each other, and the two ends of the magnetic bar are respectively connected to the two mobile drive devices through two connecting blocks, and the output parts of the mobile drive devices are respectively fixedly connected to the bottom of one side of the corresponding connecting blocks, and the limit adjustment components are provided with two and are respectively movably arranged on the top of the two connecting blocks, and a channel for the battery pole piece to pass through is set between the limit adjustment component and the top of the connecting block, and the magnetic bar is composed of a magnetic core and a non-magnetic metal material wrapped outside the magnetic core. The magnetic core is horizontally embedded inside the magnetic rod along the length direction of the magnetic rod, and the magnetic core includes a first magnet, a magnetic conductive sheet and a second magnet arranged in sequence longitudinally, the magnetic properties of the first magnet and the second magnet are opposite, the N pole of the first magnet and the N pole of the second magnet are respectively in contact with the two outer side walls of the magnetic conductive sheet, the magnetic lines of force of the first magnet and the second magnet flow from the N pole to the S pole and form a strong magnetic surface above the edge of the magnetic conductive sheet, the ruler is provided with two and is fixedly arranged on the two outer sides of the two connecting blocks along the movement direction of the corresponding moving drive devices, the zero scale line of the ruler is in the same horizontal plane as the strong magnetic surface at the top of the magnetic rod and the top surface of each connecting block.

[0006] Preferably, the limit adjustment assembly is configured as a limit adjustment block and an adjustment screw, the limit adjustment block is movably arranged above the connecting block through the adjusting screw, the limit adjustment block is fixedly arranged on the head end of the adjusting screw, and the bottom end of the adjusting screw is rotatably arranged on the connecting block and threadedly connected thereto.

[0007] Preferably, the connecting block is configured as a concave structure, an extension portion is provided on one side of the top of the connecting block, one end of the magnetic rod is fixedly connected to the other side of the top of the connecting block, and the output portion of the mobile drive device is transmission-connected to the bottom surface of the extension portion of the connecting block.

[0008] Preferably, the thickness of the magnetic conductive sheet is 2 to 5 mm.

[0009] Preferably, the strong magnetic surface magnetic force of the magnetic bar ranges from 5000 to 13000 Gauss.

[0010] Preferably, the maximum magnetic distance between the first magnet and the second magnet is less than or equal to 34 mm.

[0011] Preferably, the transverse length deformation of the magnetic bar is less than or equal to 0.5 mm / 1 M.

[0012] Preferably, the non-magnetic metal material on the surface of the magnetic rod is set to 304 stainless steel and is welded by seamless welding technology and processed by surface polishing technology.

[0013] Preferably, the mobile drive devices are all configured as servo drive cylinders.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention has a simple structure and a reasonable design. When the pole piece passes over the magnetic rod and passes through the strong magnetic surface formed by the magnetic conductive sheet, the first magnet and the second magnet, the adsorption capacity of the magnetic rod is significantly enhanced, and the magnetic impurities on the pole piece will be effectively adsorbed by the magnetic rod, thereby achieving a good iron removal effect. The quality problems of the pole piece caused by residual magnetic impurities such as iron powder can be avoided. The distance between the magnetic rod and the pole piece can also be adjusted by a mobile drive device, and adjusted according to the thickness of the pole piece, the surface state and the required adsorption strength to achieve the best iron removal effect. The pole piece is light in weight and easy to move and install, which can improve the performance and quality of the battery and reduce the risk of product failure due to contamination by magnetic impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The structure of a pole piece iron removal mechanism provided by an embodiment of the present invention is schematically shown. Figure 1 ;

[0018] Figure 2 This is a partially enlarged schematic diagram of a pole piece iron removal mechanism provided by an embodiment of the present invention. Figure 1 ;

[0019] Figure 3 The structure of a pole piece iron removal mechanism provided by an embodiment of the present invention is schematically shown. Figure 2 ;

[0020] Figure 4 This is a partially enlarged schematic diagram of a pole piece iron removal mechanism provided by an embodiment of the present invention. Figure 2 ;

[0021] Figure 5 is a cross-sectional schematic diagram of a pole piece iron removal mechanism provided by an embodiment of the present invention;

[0022] Figure 6 It is a partially enlarged schematic cross-sectional view of a pole piece iron removal mechanism provided by an embodiment of the present invention;

[0023] Figure 7 is a schematic longitudinal section diagram of a pole piece iron removal mechanism provided by an embodiment of the present invention;

[0024] Figure 8 It is a schematic diagram of the principle of a pole piece iron removal mechanism provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please refer to Figure 1 An embodiment of the present invention provides a pole piece iron removal mechanism, including a connecting block 1, a mobile drive device 2, a limit adjustment component 3, a magnetic rod 4 and a scale 5. The various components of this embodiment are described in detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 3 As shown, two mobile drive devices 2 can be provided and arranged opposite to each other, the two ends of the magnetic rod 4 are transmission-connected to the two mobile drive devices 2 through two connecting blocks 1 respectively, the output parts of the mobile drive devices 2 are fixedly connected to the bottom of one side of the corresponding connecting blocks 1 respectively, two limit adjustment components 3 are provided and are movably arranged on the top of the two connecting blocks 1 respectively, and a channel for the battery pole pieces to pass through is arranged between the limit adjustment components 3 and the top of the connecting blocks 1, and two scales 5 can be provided and are fixedly arranged on the two outer sides of the two connecting blocks 1 along the movement direction of the corresponding mobile drive devices 2 respectively, and the zero scale line of the scale 5 is in the same horizontal plane as the strong magnetic surface at the top of the magnetic rod 4 and the top surface of each connecting block 1.

[0028] Preferably, the connection block 1 is configured as a concave structure, an extension portion 11 is provided on one side of the top of the connection block 1, one end of the magnetic rod 4 is fixedly connected to the other side of the top of the connection block 1, and the output portion of the mobile drive device 2 is transmission-connected to the bottom surface of the extension portion 11 of the connection block 1. The concave structural design of the connection block 1 enhances the overall stability of the device and reduces the vibration of the mobile drive device 2 during the transmission process.

[0029] Preferably, the mobile drive devices 2 are configured as servo drive cylinders, which can drive the connection block 1 and the magnetic rod 4 connected thereto to move closer to or further away from the pole piece, so as to accurately adjust the relative position of the positioning magnetic rod 4 and the pole piece.

[0030] like Figure 4 and Figure 7As shown, the limit adjustment component 3 can be set as a limit adjustment block 31 and an adjustment screw 32. The limit adjustment block 31 is movably set above the connecting block 1 through the adjustment screw 32. The limit adjustment block 31 is fixedly set at the head end of the adjustment screw 32, and the bottom end of the adjustment screw 32 is rotatably set on the connecting block 1 and threadedly connected thereto.

[0031] During specific implementation, the rotating limit adjustment block 31 can drive the adjustment screw 32 to rotate to adjust its protruding height relative to the connecting block 1 and fix it. The limit adjustment block 31 is used to limit the position of the pole piece through the channel to ensure that the pole piece will not move beyond the set range when the magnetic bar 4 removes iron, avoid relative displacement of the pole piece, and can also adapt to pole pieces of different specifications or thicknesses.

[0032] At the same time, the distance between the pole piece and the strong magnetic surface of the magnetic bar 4 can be intuitively displayed on the ruler 5. The distance between the magnetic bar 4 and the pole piece in this embodiment can be adjusted between 3 and 10 mm, which is convenient for the operator to monitor and adjust, ensuring that the pole piece is in an appropriate position for iron removal operations, thereby improving the accuracy and efficiency of iron removal.

[0033] like Figure 5 and Figure 6 As shown, the magnetic bar 4 can be composed of a magnetic core 40 and a non-magnetic metal material wrapped around the outside of the magnetic core 40. The magnetic core 40 is horizontally embedded in the magnetic bar 4 along the length direction of the magnetic bar 4. The magnetic core 40 includes a first magnet 401, a magnetic conductive sheet 402 and a second magnet 403 arranged in sequence longitudinally. The magnetic properties of the first magnet 401 and the second magnet 403 are opposite. The N pole of the first magnet 401 and the N pole of the second magnet 403 are respectively in contact with the two outer side walls of the magnetic conductive sheet 402. The magnetic lines of force of the first magnet 401 and the second magnet 403 both flow from the N pole to the S pole and form a strong magnetic surface above the edge of the magnetic conductive sheet 402.

[0034] like Figure 8 As shown, specifically, when the magnetic conductive sheet 402 is magnetized and activated, it interacts with the magnetic properties of the first magnet 401 and the second magnet 403 to form a closed magnetic circuit. Since the N poles of the first magnet 401 and the second magnet 403 are respectively located on the outside of the magnetic conductive sheet 402, the magnetic lines of force will flow from the N pole of the first magnet 401 to the S pole, from the N pole of the second magnet 403 to the S pole, and then flow from their respective S poles to the outside of the magnetic conductive sheet 402. Among them, the A surface is a strong magnetic surface, and the B surface, the C surface and the D surface are weak magnetic surfaces.

[0035] In this embodiment, the thickness of the magnetic sheet 402 can be 2-5 mm, and the maximum magnetic distance between the first magnet 401 and the second magnet 403 is less than or equal to 34 mm. The magnetic sheet can enhance the magnetic field strength of the magnetic bar, reduce unnecessary magnetic field interference, and improve adsorption efficiency.

[0036] The magnetic field strength will decay rapidly with the increase of distance. Therefore, within the distance range of 34mm, the magnet and the magnetic material can maintain a certain attraction. Beyond this distance, the effect of the magnetic field will weaken and the attraction will disappear.

[0037] Preferably, the first magnet 401 and the second magnet 403 can both be magnets. Since less magnetic material is used, the overall device is light and easy to move and install. The strong magnetic surface magnetic force of the magnetic bar 4 can range from 5000 to 13000 Gauss.

[0038] The test results of this embodiment show that the peak magnetic force of the magnetic bar is uniform and stable, the continuous magnetic force has no breakpoints, the magnetic material on the surface of the pole piece passes through the continuous magnetic field area, and the surface adsorption effect is excellent.

[0039] When this embodiment is used under normal conditions, the annual demagnetization rate is ≤3%.

[0040] The transverse length deformation of the magnetic bar 4 is less than or equal to 0.5 mm / 1 M.

[0041] Preferably, the non-magnetic metal material wrapped around the magnetic bar 4 can effectively prevent external interference while maintaining the integrity of the magnetic field of the internal magnetic core 40. Specifically, the non-magnetic metal material on the surface of the magnetic bar 4 is set to 304 stainless steel and is welded by seamless welding technology and surface polishing technology.

[0042] In other embodiments, the width W1 and length of the magnetic bar can be designed according to requirements, and the magnetic spacing W2 and the magnet heights H1 and H2 can be adjusted and designed according to the magnetic strength.

[0043] To sum up, the present invention has a simple structure and a reasonable design. When the pole piece passes over the magnetic bar and passes through the strong magnetic surface formed by the magnetic conductive sheet, the first magnet and the second magnet, the adsorption capacity of the magnetic bar is significantly enhanced, and the magnetic impurities on the pole piece will be effectively adsorbed by the magnetic bar to achieve a good iron removal effect. The quality problems of the pole piece caused by residual magnetic impurities such as iron powder can be avoided. The distance between the magnetic bar and the pole piece can also be adjusted by a mobile drive device, and adjusted according to the thickness of the pole piece, the surface state and the required adsorption strength to achieve the best iron removal effect. It is light in weight and easy to move and install, which can improve the performance and quality of the battery and reduce the risk of product failure due to contamination by magnetic impurities.

[0044] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A pole piece iron removal mechanism, characterized in that: The invention comprises a connecting block (1), a mobile drive device (2), a limit adjustment component (3), a magnetic rod (4) and a scale (5), wherein the mobile drive device (2) is provided with two and arranged opposite to each other, the two ends of the magnetic rod (4) are respectively connected to the two mobile drive devices (2) through the two connecting blocks (1), the output parts of the mobile drive devices (2) are respectively fixedly connected to the bottom of one side of the corresponding connecting block (1), the limit adjustment component (3) is provided with two and movably arranged on the top of the two connecting blocks (1), and a channel for battery pole pieces to pass through is arranged between the limit adjustment component (3) and the top of the connecting block (1), and the magnetic rod (4) is composed of a magnetic core (40) and a non-magnetic metal material wrapped outside the magnetic core (40), and the magnetic core (40) is horizontally embedded in the magnetic rod (4) along the length direction of the magnetic rod (4). 4), the magnetic core (40) comprises a first magnet (401), a magnetic conductive sheet (402) and a second magnet (403) arranged in sequence longitudinally, the first magnet (401) and the second magnet (403) have opposite magnetic properties, the N pole of the first magnet (401) and the N pole of the second magnet (403) are in contact with the two outer side walls of the magnetic conductive sheet (402) respectively, the magnetic lines of force of the first magnet (401) and the second magnet (403) flow from the N pole to the S pole and form a strong magnetic surface above the edge of the magnetic conductive sheet (402), the ruler (5) is provided with two and is fixedly arranged on the two outer sides of the two connecting blocks (1) along the movement direction of the corresponding moving drive device (2), the zero scale line of the ruler (5) is in the same horizontal plane as the strong magnetic surface at the top of the magnetic bar (4) and the top surface of each connecting block (1).

2. A pole piece iron removal mechanism according to claim 1, characterized in that: The limit adjustment assembly (3) is configured as a limit adjustment block (31) and an adjustment screw (32); the limit adjustment block (31) is movably arranged above the connection block (1) via the adjustment screw (32); the limit adjustment block (31) is fixedly arranged at the head end of the adjustment screw (32); and the bottom end of the adjustment screw (32) is rotatably arranged on the connection block (1) and threadedly connected thereto.

3. A pole piece iron removal mechanism according to claim 1, characterized in that: The connecting block (1) is configured as a concave structure, an extension portion (11) is provided on one side of the top of the connecting block (1), one end of the magnetic rod (4) is fixedly connected to the other side of the top of the connecting block (1), and the output portion of the mobile drive device (2) is transmission-connected to the bottom surface of the extension portion (11) of the connecting block (1).

4. A pole piece iron removal mechanism according to claim 1, characterized in that: The thickness of the magnetic conductive sheet (402) is 2 to 5 mm.

5. The pole piece iron removal mechanism according to claim 1, characterized in that: The strong magnetic surface magnetic force of the magnetic bar (4) ranges from 5000 to 13000 Gauss.

6. The pole piece iron removal mechanism according to claim 1, characterized in that: The maximum magnetic distance between the first magnet (401) and the second magnet (403) is less than or equal to 34 mm.

7. The pole piece iron removal mechanism according to claim 1, characterized in that: The transverse length deformation of the magnetic bar (4) is less than or equal to 0.5 mm / 1 M.

8. The pole piece iron removal mechanism according to claim 1, characterized in that: The non-magnetic metal material on the surface of the magnetic bar (4) is set to 304 stainless steel and is welded by seamless welding technology and processed by surface polishing technology.

9. The pole piece iron removal mechanism according to claim 1, characterized in that: The mobile drive devices (2) are all configured as servo drive cylinders.

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