Battery cell blanking device and winding equipment thereof

Abstract

The utility model relates to the field of battery cell winding production, and discloses a battery cell discharging device and winding equipment thereof.The battery cell discharging device comprises a transferring module, a synchronous driving assembly, a driven frame and a clamping assembly, and the moving end of the transferring module can move in the first preset direction and the second preset direction; the synchronous driving assembly is installed at the moving ends of the transfer modules, the two moving ends of the synchronous driving assembly can move close to each other or move away from each other, the two driven frames are installed on the two moving ends of the synchronous driving assembly, and the synchronous driving assembly can drive the two driven frames to move close to each other or move away from each other. The clamping assemblies at the two ends of each driven frame are used for clamping a battery cell, the four corners of the battery cell are clamped, and the two driven frames are driven by the synchronous driving assembly to deviate from each other, so that the battery cell clamped by the clamping assemblies is leveled; compared with an existing clamping needle, deformation is not prone to occurring due to the fact that four corners are adopted for clamping.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric core winding production, and in particular to an electric core unloading device and winding equipment thereof. BACKGROUND

[0002] In the field of power battery winding production, the bare electric core unloading process is a key step to ensure the stability of battery performance. The traditional unloading mechanism usually adopts a single long clamping needle design, which inserts into the electric core from the front, and the winding needle is withdrawn after clamping to realize the separation and transportation of the electric core. However, with the continuous increase of the size of the electric core, this design gradually exposes many deficiencies.

[0003] When the size of the electric core increases, the length of the clamping needle needs to be increased accordingly to ensure that the electric core can be accurately clamped. However, the increase in the length of the clamping needle leads to a decrease in the rigidity of the clamping needle, which makes it prone to deformation during clamping, making it difficult to ensure stable clamping and accurate transportation of the electric core, and thus affecting the production efficiency and the quality of the electric core.

[0004] The single clamping needle design has the problem of uneven stress; since the clamping needle only applies force from one side of the electric core, this unbalanced stress mode is easy to cause damage to the internal diaphragm material of the electric core, and even cause the diaphragm to pull out the core, which seriously affects the yield and performance of the electric core. CONTENT OF THE INVENTION

[0005] Therefore, the purpose of the present application is to overcome the deficiencies in the prior art and provide an electric core unloading device and winding equipment thereof.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] The present application provides:

[0008] An electric core unloading device, comprising:

[0009] A transfer module, the moving end of the transfer module being capable of moving along a first predetermined direction and a second predetermined direction;

[0010] A synchronous driving assembly, the synchronous driving assembly being installed on the moving end of the transfer module, and the two moving ends of the synchronous driving assembly being capable of moving towards each other or moving away from each other;

[0011] A driven frame, two driven frames being installed on the two moving ends of the synchronous driving assembly, and the synchronous driving assembly being capable of driving the two driven frames to move towards each other or move away from each other;

[0012] A clamping assembly, the clamping assembly being installed on both ends of each driven frame.

[0013] Further, the transfer module comprises a first linear module and a second linear module, the second linear module is installed at the moving end of the first linear module, the synchronous driving assembly is installed at the moving end of the second linear module, the first linear module drives the second linear module to move along a first preset direction, and the second linear module drives the synchronous driving assembly to move along a second preset direction.

[0014] Further, the synchronous driving assembly comprises a fixed plate, the fixed plate is provided with a transmission structure, both moving ends of the fixed plate are fixedly installed with driven plates, and the fixed plate is also fixedly installed with a rotary driving piece, the rotary driving piece is connected with the transmission structure, and the transmission structure drives both driven plates to move close to or away from each other.

[0015] Further, the transmission structure comprises:

[0016] two racks, both the racks are slidingly installed on the fixed plate, and each rack is installed with a driven plate;

[0017] a gear, the gear is installed at the rotating end of the rotary driving piece, the gear is located between the two racks, and the gear is engaged with each rack.

[0018] Further, the fixed plate is provided with a positioning assembly, the positioning assembly is used for the movement positioning of the driven plate, the positioning assembly comprises a mounting plate fixedly installed on the fixed plate, the positioning assembly is installed with a positioning sensor, and one of the driven plates is installed with a trigger piece matched with the positioning sensor.

[0019] Further, the positioning sensor has N, and N satisfies: N≥1.

[0020] Further, the clamping assembly comprises a first linear driving piece fixedly installed on the driven frame, the driving end of the first linear driving piece is installed with a moving frame, and the moving frame is installed with a clamping structure.

[0021] Further, the clamping structure comprises a second linear driving piece fixedly installed on the moving frame, the telescopic end of the second linear driving piece is fixedly installed with a first clamping block, the moving frame is fixedly provided with a second clamping block, and the second linear driving piece drives the first clamping block to move towards or away from the second clamping block.

[0022] Further, the side surface of the second clamping block towards the first clamping block is an arc surface.

[0023] The application provides an electric core winding equipment comprising the electric core blanking device.

[0024] The application clamps the battery cell through the clamping assembly of both ends of each driven frame, realizes clamping of four corners of the battery cell, and drives two driven frames away from each other through the synchronous driving assembly, so that the battery cell clamped by the clamping assembly is flattened. Compared with the existing clamping needle, the application adopts four corner clamping and is not easy to deform.

[0025] In order to make the above-mentioned purposes, characteristics and advantages of the application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The application shows the three-dimensional structure of the blanking mechanism;

[0028] Figure 2 The application shows the front view structure of the blanking mechanism;

[0029] Figure 3 The application shows the structure of the synchronous driving assembly;

[0030] Figure 4 The application shows the schematic diagram of the positioning assembly;

[0031] Figure 5 The application shows the schematic diagram of the clamping assembly installed at both ends of the driven frame;

[0032] Figure 6 The application shows the schematic diagram of the position relationship between the moving frame, the first clamping block and the second clamping block;

[0033] Figure 7 The application shows the position of the avoiding groove on the winding needle;

[0034] Figure 8 The application shows the schematic diagram of the battery cell being flattened from a circular shape to a flat shape.

[0035] Main element symbol explanation:

[0036] 100 - transfer module; 110 - first linear module; 120 - second linear module; 200 - synchronous driving assembly; 210 - fixed plate; 220 - rack; 230 - driven plate; 240 - rotary driving piece; 250 - gear; 260 - positioning assembly; 261 - mounting plate; 262 - positioning sensor; 263 - trigger piece; 300 - driven frame; 400 - clamping assembly; 410 - first linear driving piece; 420 - moving frame; 430 - clamping structure; 431 - second linear driving piece; 432 - first clamping block; 433 - second clamping block; 500 - winding needle; 600 - avoiding groove. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described below in detail with reference to examples shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as a limitation of the present application.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0040] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0042] Embodiments:

[0043] After the winding of the battery cell, the next step is usually the hot pressing of the battery cell, and for this purpose, the battery cell needs to be taken out from the winding station. At present, a single-sided clamping needle is generally inserted into the center hole position of the battery cell to clamp the battery cell, and then the winding needle is withdrawn from the battery cell, so as to realize the separation of the battery cell and the winding needle. However, if the size of the battery cell increases, the length of the clamping needle also needs to be increased. With the increase of the length, the height of the clamping needle will decrease, and it is likely that deformation will occur when the battery cell is clamped, which cannot guarantee the stability of clamping the battery cell. Therefore, the clamping assembly 400 is arranged at both ends of each driven frame 300, that is, there are four clamping assemblies 400 on the two driven frames 300, and the four clamping assemblies 400 are distributed in a rectangular shape. Therefore, when the battery cell is discharged, the four corners of the battery cell are clamped, and compared with the existing single-sided clamping of the battery cell by the clamping needle, the clamping of the battery cell is more stable when the battery cell is discharged.

[0044] Specifically, the present application provides a battery cell discharging device, which comprises a transfer module 100, a synchronous driving assembly 200, a driven frame 300 and a clamping assembly 400.

[0045] The moving end of the transfer module 100 can move along a first preset direction and a second preset direction. The synchronous driving assembly 200 is installed on the moving end of the transfer module 100. The two moving ends of the synchronous driving assembly 200 can move towards each other or move away from each other. Two driven frames 300 are installed on the two moving ends of the synchronous driving assembly 200. The synchronous driving assembly 200 can drive the two driven frames 300 to move towards each other or move away from each other. The clamping assemblies 400 are installed on both end portions of each driven frame 300.

[0046] Reference Figure 1 and Figure 2The transfer module 100 can drive the synchronous driving assembly 200 to move in the left-right direction and the up-down direction, that is, the first preset direction is the left-right direction, and the second preset direction is the up-down direction. The synchronous driving assembly 200 is driven by the transfer module 100 to realize two-axis movement, so as to drive the two driven frames 300 on the synchronous driving assembly 200 to move to a predetermined position. The predetermined position refers to the battery cell that has been completely wound, that is, the battery cell unloading position of the winding device.

[0047] Through the linkage of the transfer module 100 and the synchronous driving assembly 200, the battery cell that has been completely wound is located between the two driven frames 300, that is, the battery cell is located in the space formed by the four clamping assemblies 400. Then, the two driven frames 300 are driven by the synchronous driving assembly 200 to move close to each other, and then the four clamping assemblies 400 clamp the battery cell. Next, the winding needle 500 in the winding device is separated, so as to realize the separation between the winding needle 500 and the battery cell. At this time, the battery cell is completely clamped by the four clamping assemblies 400. Then, the two driven frames 300 are driven by the synchronous driving assembly 200 to move away from each other, so as to realize the flattening of the battery cell clamped by the clamping assembly 400. Then, the transfer module 100 moves the flattened battery cell to the next process.

[0048] The above is the process of separating the battery cell that has been completely wound from the winding needle 500. It should be noted that the transfer module 100, the synchronous driving assembly 200, the clamping assembly 400 and other corresponding components can be controlled by the controller adapted thereto, and the components can be linked as needed.

[0049] For example, the transfer module 100 can also move in the front-back direction as needed, that is, the transfer module 100 can move in three directions.

[0050] The transfer module 100 includes a first linear module 110 and a second linear module 120. The second linear module 120 is installed at the moving end of the first linear module 110. The synchronous driving assembly 200 is installed at the moving end of the second linear module 120. The first linear module 110 drives the second linear module 120 to move in the first preset direction. The second linear module 120 drives the synchronous driving assembly 200 to move in the second preset direction.

[0051] Participate Figure 1 And Figure 2 As shown, the first linear module 110 and the second linear module 120 are assembled and installed to move in the left-right and up-down directions. If the front-back direction movement is also required, another linear module needs to be installed on the first linear module 110 and the second linear module 120, that is, a linear module capable of moving in the front-back direction.

[0052] Exemplarily, the first linear module 110 and the second linear module 120 can be selected from an electrode screw linear module, a single machine synchronous belt linear module, a rack and pinion linear module and the like. In the embodiment, the first linear module 110 and the second linear module 120 both adopt the electrode screw linear module. It needs to be explained that the electrode screw linear module mainly comprises a motor and a screw rod. The screw rod is connected with the moved object. The screw rod is driven to rotate by the motor, so as to drive the moved object to move. The electrode screw linear module is easily thought by the person skilled in the art. Here, the electrode screw linear module will not be described in more details.

[0053] The synchronous driving assembly 200 comprises a fixed plate 210, a transmission structure is arranged on the fixed plate 210, two driven plates 230 are fixedly installed on two moving ends of the fixed plate 210, and a rotary driving piece 240 is also fixedly installed on the fixed plate 210. The rotary driving piece 240 is connected with the transmission structure. The transmission structure drives the two driven plates 230 to move close to or away from each other.

[0054] Referring to Figure 3 In order to enable the driven frames 300 to move close to or away from each other, the two driven frames 300 are respectively installed on the two driven plates 230. Specifically, the rotary driving piece 240 drives the two driven plates 230 to move close to or away from each other through the transmission structure, so as to realize the movement of the two driven frames 300 close to or away from each other.

[0055] Exemplarily, the transmission structure can be a synchronous belt structure, a rack and pinion structure and the like. The synchronous belt structure is that a synchronous belt is connected between two pulleys. The driven plate 230 is slidingly installed on the fixed plate 210. The driven plate 230 is connected on the two sides of the synchronous belt. The end of the rotary driving piece 240 is connected with one of the pulleys. The rotary driving piece 240 drives the pulley to rotate, so as to drive the synchronous belt to rotate. The rotation of the synchronous belt drives the two driven plates 230 to move close to or away from each other. In the embodiment, the transmission structure adopts the rack and pinion structure.

[0056] The transmission structure comprises two racks 220 and a gear 250. The two racks 220 are slidingly installed on the fixed plate 210. The driven plate 230 is installed on each of the racks 220. The gear 250 is installed on the rotating end of the rotary driving piece 240. The gear 250 is located between the two racks 220. The gear 250 is engaged with each of the racks 220.

[0057] Continuing to refer to Figure 3As shown in the drawings, in the embodiment, two racks 220 are slidably installed on the upper surface of the fixed plate 210, specifically, the racks 220 are connected with the fixed plate 210 through sliding block guide rails, and two driven plates 230 are connected with the racks 220 respectively, in order to improve the stability of the driven plate 230 during the moving process, the driven plate 230 is installed on the fixed plate 210 through sliding block guide rails.

[0058] Further, the rotary driving member 240 is installed on the bottom surface of the fixed plate 210, the rotary shaft of the rotary driving member 240 extends to between the two racks 220, the rotary shaft of the rotary driving member 240 is installed with a gear 250, the gear 250 is located between the two racks 220 and meshes with the two racks 220 respectively, by driving the gear 250 to rotate through the rotary driving member 240, the two racks 220 are driven to move synchronously, the moving directions of the two racks 220 are opposite, and further drive the two driven plates 230 to move close to or away from each other.

[0059] The fixed plate 210 is provided with a positioning assembly 260, the positioning assembly 260 is used for the movement positioning of the driven plate 230, the positioning assembly 260 includes a mounting plate 261 fixedly installed on the fixed plate 210, the positioning assembly 260 is installed with a positioning sensor 262, and one of the driven plates 230 is installed with a trigger 263 matched with the positioning sensor 262.

[0060] Referring to Figure 3 and Figure 4 As shown in the drawings, the trigger 263 is fixedly installed on one of the driven plates 230, the trigger 263 moves along with the driven plate 230, in order to accurately control the moving position of the driven plate 230, the trigger 263 is driven to move by the driven plate 230 to trigger the positioning sensor 262 to determine the specific position, after the trigger 263 triggers the positioning sensor 262, the position of the driven plate 230 at this time can be determined, and in practice, a plurality of positioning sensors 262 can be arranged to accurately position and limit the moving position of the driven plate 230.

[0061] The positioning sensor 262 has N, which satisfies: N≥1, N can be 1, 2, 3, 4, etc., and the number of the positioning sensor 262 can be selected according to actual needs.

[0062] Continuing to refer to Figure 4As shown, in the embodiment, the positioning sensor 262 is shared by three, namely the above-mentioned macro, three positioning sensors 262 correspond to three positions of the driven plate 230 respectively, when the trigger 263 is located at the middle positioning sensor 262, at this time the driven plate 230 is in the initial state, when the trigger 263 is located at the left positioning sensor 262, at this time the clamping assembly 400 is in the state of clamping the battery cell, when the trigger 263 is located at the right positioning sensor 262, at this time the two driven plates 230 drive the two driven frames 300 to be away from each other, so as to flatten the battery cell clamped by the clamping assembly 400, the above is an example of the function of the positioning sensor 262 at different positions of the trigger 263, and in actual use, it can be set according to the needs, which is not limited here.

[0063] Referring to Figure 8 As shown, Figure 8 It is shown that the battery cell is changed from a ring shape to an elliptical or flat shape.

[0064] Illustratively, the positioning sensor 262 can be a travel switch, a photoelectric sensor, etc., in the embodiment, the positioning sensor 262 is selected as a photoelectric switch, and the trigger 263 can be a shielding piece, that is, the trigger 263 is located at the position of the positioning sensor 262 to trigger the positioning sensor 262.

[0065] The clamping assembly 400 comprises a first linear drive 410 fixedly installed on the driven frame 300, and a moving frame 420 is installed on the driving end of the first linear drive 410.

[0066] The clamping structure 430 comprises a second linear drive 431 fixedly installed on the moving frame 420, and a first clamping block 432 is fixedly installed on the telescopic end of the second linear drive 431.

[0067] Referring to Figure 5 and Figure 7As shown, when the clamping assembly 400 is moved to the two sides of the battery cell, only the first linear drive 410 needs to be started to drive the moving frame 420 to move towards the battery cell. At this time, the second linear drive 431 and the second clamping block 433 also move towards the battery cell along with the moving frame 420. The second clamping block 433 moves into the avoiding groove 600 of the winding needle 500, and then moves into the center hole of the battery cell. At this time, the battery cell winding is located between the first clamping block 432 and the second clamping block 433. Next, the first clamping block 432 is driven by the second linear drive 431 to move towards the second clamping block 433, so that the first clamping block 432 is in contact with the outer surface of the battery cell. As the first clamping block 432 continues to move under the driving of the second linear drive 431, the first clamping block 432 and the second clamping block 433 clamp the battery cell. Then, the winding needle 500 is separated from the battery cell. During the process of withdrawing, the moving frame 420 blocks the end of the battery cell, so that the winding needle 500 can be separated from the battery cell smoothly.

[0068] Further, the two driven frames 300 can be moved away from each other to flatten the clamped battery cell, as shown in Figure 8 As shown, the circular shape is converted into a flat state.

[0069] The side surface of the second clamping block 433 towards the first clamping block 432 is an arc surface.

[0070] Referring to Figure 6 As shown, when the first clamping block 432 and the second clamping block 433 are close to each other to clamp the battery cell, in order to prevent damage to the battery cell, the side of the second clamping block 433 in contact with the battery cell is set to be arc-shaped. The part of the first clamping block 432 in contact with the battery cell can also be arc-shaped, so as to reduce the risk of damaging the battery cell.

[0071] The application also provides a battery cell winding device comprising the battery cell unloading device.

[0072] It should be noted that, since the wire winding device comprises the battery cell unloading device, the battery cell winding device also has the technical effects of the battery cell unloading device.

[0073] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0074] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A battery cell feeding device, characterized in that, The utility model relates to a kind of synchronous driving assembly and synchronous driving device, including: Transfer module (100), the moving end of the transfer module (100) can move along first preset direction and second preset direction; Synchronous driving assembly (200), the moving end of the synchronous driving assembly (200) is installed at the moving end of the transfer module (100), and the two moving ends of the synchronous driving assembly (200) can move mutually close or move away from each other; Driven frame (300), two driven frames (300) are installed on the two moving ends of the synchronous driving assembly (200), and the synchronous driving assembly (200) drives the two driven frames (300) to move mutually close or move away from each other; Clamping assembly (400), the clamping assembly (400) is installed at the two end portions of each driven frame (300).

2. The cell unloader device of claim 1, wherein, The transfer module (100) includes first linear module (110) and second linear module (120), the second linear module (120) is installed at the moving end of the first linear module (110), the synchronous driving assembly (200) is installed at the moving end of the second linear module (120), the first linear module (110) drives the second linear module (120) to move along first preset direction, and the second linear module (120) drives the synchronous driving assembly (200) to move along second preset direction.

3. The cell unloader of claim 1, wherein, The synchronous driving assembly (200) includes fixed plate (210), transmission structure is provided on the fixed plate (210), the two moving ends of the fixed plate (210) are fixedly installed with driven plate (230), and the fixed plate (210) is also fixedly installed with rotary drive (240), the rotary drive (240) is connected with the transmission structure, and the transmission structure is driven to drive two driven plates (230) to move mutually close or move away from each other.

4. The cell unloader of claim 3, wherein, The transmission structure includes: Two racks (220), two racks (220) are slidably installed on the fixed plate (210), and the driven plate (230) is installed on each rack (220); Gear (250), the gear (250) is installed on the rotary end of the rotary drive (240), the gear (250) is located between two racks (220), and the gear (250) is engaged with each rack (220).

5. The cell blanking device of claim 3, wherein Positioning assembly (260) is provided on the fixed plate (210), and the positioning assembly (260) is used for the movement positioning of the driven plate (230), the positioning assembly (260) includes mounting plate (261) fixedly installed on the fixed plate (210), positioning sensor (262) is installed on the positioning assembly (260), and one of the driven plate (230) is installed with trigger piece (263) matched with the positioning sensor (262).

6. The cell blanking device of claim 5, wherein, The positioning sensor (262) has N, and satisfies: N≥1.

7. The cell blanking device of claim 1, wherein The clamping assembly (400) comprises a first linear drive (410) fixedly installed on the driven frame (300), a moving frame (420) is installed on the driving end of the first linear drive (410), and a clamping structure (430) is installed on the moving frame (420).

8. The cell blanking device of claim 7, wherein, The clamping structure (430) comprises a second linear drive (431) fixedly installed on the moving frame (420), a first clamping block (432) is fixedly installed on the telescopic end of the second linear drive (431), a second clamping block (433) is fixedly arranged on the moving frame (420), and the second linear drive (431) drives the first clamping block (432) to move towards or away from the second clamping block (433).

9. The cell blanking device of claim 8, wherein, The side surface of the second clamping block (433) towards the first clamping block (432) is an arc surface.

10. An electrode core winding apparatus characterized by comprising: The electric cell blanking device comprises the electric cell blanking device according to any one of claims 1 to 9.

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