Battery cell blanking device and battery production system

Abstract

The utility model relates to the field of battery production equipment, in particular to a battery cell discharging device and a battery production system. The battery cell discharging device comprises a lifting mechanism, a clamping mechanism and a guide mechanism; the lifting mechanism is used for driving the clamping mechanism to lift relative to the guide mechanism; the clamping mechanism is used for clamping a battery cell air bag; and the guide mechanism is correspondingly provided with a limiting gap so as to limit and guide the battery cell body. According to the battery cell discharging device provided by the invention, when the battery cell is discharged, the battery cell body can be limited and guided in the battery cell moving process, so that the battery cell is prevented from being collided and damaged when the battery cell is placed in the material frame.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and in particular to a battery cell unloading device and a battery production system. Background Art

[0002] In the production process of soft-pack lithium batteries, the battery cells must be baked to remove moisture from the pole pieces because high moisture content will affect the battery internal resistance and cycle life, and will cause problems such as battery expansion and corrosion. When baking a battery cell with a single-side tab, the battery cell needs to be loaded from the material frame to the baking tray (the tray is provided with a heat conduction plate between adjacent battery cells), and then the battery cell is unloaded from the baking tray back to the empty material frame (the material frame is provided with a fixing block between adjacent battery cells) after baking.

[0003] Due to the large difference in the spatial layout of the material frame and the pallet, as well as problems such as skewed air bags and no grabbing space at the bottom of the battery cells with single-sided tabs during transportation, most existing technologies use manual or semi-automatic methods to remove and discharge the battery cells, which has low efficiency and can easily damage the battery cells, resulting in product scrapping. Utility Model Content

[0004] The purpose of the present application is to provide a battery cell unloading device and a battery production system, which, in response to the baking process requirements of single-side tab soft-pack batteries, provides a method with high gripping efficiency and avoidance of battery cell damage to complete the unloading of the battery cells.

[0005] The present application provides a battery cell unloading device, including a lifting mechanism, a clamping mechanism and a guiding mechanism;

[0006] The lifting mechanism is used to drive the clamping mechanism to rise and fall relative to the guiding mechanism; the clamping mechanism is used to clamp the battery cell air bag; the guiding mechanism is correspondingly provided with a limited gap to limit and guide the battery cell body.

[0007] In the above technical solution, further, the clamping mechanism includes a first support frame and a clamping portion, and the lifting mechanism is connected to the first support frame;

[0008] The clamping portion includes a first clamping assembly and a second clamping assembly, and the first clamping assembly and the second clamping assembly are mounted on the first supporting frame in a one-to-one correspondence;

[0009] The first clamping assembly and the second clamping assembly are arranged at intervals, and the first clamping assembly is opposite to the head of the battery core air bag, and the second clamping assembly is opposite to the tail of the battery core air bag.

[0010] In the above technical solution, further, the first clamping assembly includes a first connecting plate and at least one clamping claw module, the first connecting plate is connected to the first supporting frame; the clamping claw module is installed on the first connecting plate, and when the number of the clamping claw modules is multiple, the multiple clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells;

[0011] The second clamping assembly includes a second connecting plate and at least one clamping claw module, the second connecting plate is connected to the first supporting frame; the clamping claw module is installed on the second connecting plate, and when there are multiple clamping claw modules, the multiple clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells.

[0012] In the above technical solution, further, the clamping jaw module includes a driving member and two clamping pieces arranged opposite to each other;

[0013] The driving member is a Y-shaped pneumatic finger, and two clamps are respectively connected to the two clamping fingers of the Y-shaped pneumatic finger; the clamp includes a connecting portion and a bending portion that are connected to each other, the connecting portion is connected to the clamping fingers, and the bending portion is bent in the clamping direction to clamp the battery cell air bag.

[0014] In the above technical solution, further, the bending portion is provided with a clamping surface, and the clamping surface is provided with a soft pad.

[0015] In the above technical solution, further, the guide mechanism includes a second support frame and a limit assembly, the limit assembly is installed on the second support frame, and the limit assembly is provided with the limit gap;

[0016] The clamping parts are symmetrically arranged on both sides of the limiting assembly, and the limiting gap is used to limit and guide the tail of the battery cell body clamped on both sides.

[0017] In the above technical solution, further, the limiting assembly includes limiting plates spaced apart from each other on the second support frame, and the limiting gap is formed between the limiting plates.

[0018] In the above technical solution, further, the lifting mechanism includes a screw assembly and a driving device;

[0019] The screw assembly and the driving device are installed on the second support frame, and the length direction of the screw assembly is the vertical direction; the driving device is used to drive the screw of the screw assembly to rotate;

[0020] The clamping mechanism is connected to the nut of the screw rod assembly.

[0021] In the above technical solution, further, the lifting mechanism also includes a guide rail assembly;

[0022] The guide rail assembly is installed on the second support frame, and the guiding direction of the guide rail assembly is the vertical direction; the clamping mechanism is connected to the slider of the guide rail assembly.

[0023] The present application also provides a battery production system, including the battery cell unloading device described in the above scheme.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The battery cell unloading device provided in the present application can limit and guide the battery cell body during the process of moving the battery cell when unloading the battery cell, so as to avoid the battery cell being damaged by collision when being placed in the material frame.

[0026] The present application also provides a battery production system, including the battery cell unloading device described in the above solution. Based on the above analysis, it can be seen that the battery production system also has the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A first structural schematic diagram of the battery cell unloading device provided in the present application;

[0029] Figure 2 A second structural schematic diagram of the battery cell unloading device provided in the present application;

[0030] Figure 3 A third structural schematic diagram of the battery cell unloading device provided in this application;

[0031] Figure 4 A first structural schematic diagram of the clamping jaw module provided in this application;

[0032] Figure 5 This is a second structural schematic diagram of the clamping jaw module provided in this application.

[0033] In the figure: 101-first support frame; 102-clamping part; 103-first clamping assembly; 104-second clamping assembly; 105-first connecting plate; 106-clamping claw module; 107-second connecting plate; 108-driving member; 109-clamping piece; 110-connecting part; 111-bending part; 112-inclined corner; 113-cushion; 114-second support frame; 115-limiting assembly; 116-limiting plate; 117-limiting gap; 118-screw assembly; 119-guide rail assembly; 120-frame; 121-mounting plate. DETAILED DESCRIPTION

[0034] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Embodiment 1

[0038] The battery cell unloading device provided in the present application can be installed at the movable end of the manipulator. When the baking process of the battery cell is completed, the battery cell unloading device can take out the battery cell from the baking tray and unload it into the empty material frame under the drive of the manipulator, so that the material frame can carry the battery cell to the next process. Since the gap between the battery cells in the material frame is large, and the gap between the battery cells in the baking tray is small, when unloading the battery cell from the baking tray to the material frame, the difficulty of placement is relatively low, and the accuracy requirement for the placement position of the battery cell is not high.

[0039] See also Figures 1 to 5 As shown, the battery cell unloading device includes a lifting mechanism, a clamping mechanism and a guiding mechanism; the lifting mechanism is used to drive the clamping mechanism to lift and lower relative to the guiding mechanism; the clamping mechanism is used to clamp the battery cell air bag; the guiding mechanism is correspondingly provided with a limited gap 117 to limit and guide the battery cell body.

[0040] Specifically, the battery cell unloading device includes a lifting mechanism, a clamping mechanism and a guiding mechanism. In the specific production process, the battery cell unloading process includes three steps: picking up, moving and unloading.

[0041] In the material taking step, when the battery cell unloading device is moved to the top of the baking tray by the manipulator, the position of the guide mechanism remains unchanged, and the lifting mechanism can drive the clamping mechanism to descend relative to the guide mechanism so that the clamping mechanism enters the baking tray, thereby clamping the battery cell air bag in the baking tray. After clamping the battery cell air bag, the lifting mechanism drives the clamping mechanism to rise relative to the guide mechanism to take the battery cell out of the baking tray. During the rising process of the lifting mechanism, the battery cell body gradually enters the limiting gap 117 set by the guide mechanism, which can prevent the battery cell body from deflecting during movement.

[0042] In the material transfer step, the robot moves the battery cell unloading device holding the battery cell to the top of the material frame.

[0043] In the material discharge step, when the battery cell unloading device is moved to the top of the material frame by the manipulator, the position of the guide mechanism remains unchanged, and the lifting mechanism can drive the clamping mechanism to descend relative to the guide mechanism so that the clamping mechanism enters the material frame, so that the battery cell can be placed in the placement position of the material frame. During the descent of the clamping mechanism, the limiting gap 117 set by the guide mechanism can guide the battery cell body, thereby preventing the battery cell body from shifting during movement. After the clamping mechanism releases the battery cell air bag, the lifting mechanism drives the clamping mechanism to rise relative to the guide mechanism. After the above steps, the entire battery cell unloading process is completed.

[0044] The battery cell unloading device provided in the present application can limit and guide the battery cell body during the process of moving the battery cell when unloading the battery cell, so as to avoid the battery cell being damaged by collision when being placed in the material frame.

[0045] In an optional solution of this embodiment, the clamping mechanism includes a first support frame 101 and a clamping portion 102. The first support frame 101 includes a frame 120 and a mounting plate 121. The frame 120 is connected to the top surface of the mounting plate 121, and the lifting mechanism is connected to the frame 120. The clamping portion 102 is connected to the bottom surface of the mounting plate 121. The clamping portion 102 includes a first clamping component 103 and a second clamping component 104. The first clamping component 103 and the second clamping component 104 are mounted on the mounting plate 121 in a one-to-one correspondence. The first clamping component 103 and the second clamping component 104 are mounted along the fore-and-aft direction of the battery cell airbag ( Figure 1 The first clamping assembly 103 is opposite to the head of the battery cell air bag, and the second clamping assembly 104 is opposite to the tail of the battery cell air bag.

[0046] In this embodiment, when the clamping mechanism descends to a certain depth in the baking tray, the first clamping component 103 corresponding to the head of the battery cell air bag (corresponding to the head end of the battery cell body, i.e., the tab lead-out end) can clamp the head of the battery cell air bag; the second clamping component 104 corresponding to the tail end of the battery cell air bag (corresponding to the tail end of the battery cell body, i.e., the other end of the tab lead-out end) can clamp the tail of the battery cell air bag. The method of clamping the head and tail ends of the battery cell air bag can make the clamping effect more stable, avoid the battery cell air bag from tilting and affecting the reliability of clamping the battery cell, thereby avoiding damage to the battery cell during grasping.

[0047] In an optional scheme of this embodiment, the first clamping component 103 includes a first connecting plate 105 and at least one clamping module 106, and the first connecting plate 105 is connected to the mounting plate 121 of the first support frame 101; the clamping module 106 is installed on the first connecting plate 105, and when the number of the clamping modules 106 is multiple, the multiple clamping modules 106 are correspondingly arranged along the arrangement direction of the battery cells; the second clamping component 104 includes a second connecting plate 107 and at least one clamping module 106, and the second connecting plate 107 is connected to the mounting plate 121 of the first support frame 101; the clamping module 106 is installed on the second connecting plate 107, and when the number of the clamping modules 106 is multiple, the multiple clamping modules 106 are correspondingly arranged along the arrangement direction of the battery cells.

[0048] In this embodiment, in order to achieve mass production, a plurality of stacked cells are inserted in the material frame and the baking tray, and a plurality of first clamping jaw modules 106 are arranged along the arrangement direction of the cells ( Figure 2 The second clamping modules 106 are also arranged correspondingly along the arrangement direction of the battery cells. The first clamping module 106 and the second clamping module 106 cooperate to clamp multiple battery cells at the same time, thereby improving the transportation efficiency.

[0049] In an optional scheme of this embodiment, the clamping claw module 106 includes a driving member 108 and two clamping pieces 109 arranged opposite to each other; the driving member 108 is a Y-shaped pneumatic finger, and the two clamping pieces 109 are respectively connected to the two clamping fingers of the Y-shaped pneumatic finger; the clamping piece 109 includes a connected connecting portion 110 and a bending portion 111, the connecting portion 110 is connected to the clamping fingers, and the bending portion 111 is bent in the clamping direction to clamp the battery cell air bag.

[0050] In this embodiment, since the baking positions of the baking tray are arranged at a small distance, in order to avoid collision with the baking tray and adjacent battery cells when taking out materials, the present application adopts a Y-shaped pneumatic finger in combination with a short clip 109 to clamp the battery cells, so that the clip 109 does not need to extend too deeply into the baking tray to clamp the battery cell air bag. Optionally, the clip 109 is specifically made of 6061 aluminum plate.

[0051] like Figure 4 and Figure 5 As shown, a 30° chamfer 112 is cut on the outer side of the lower part of the clip 109, so that the outer side of the clip 109 is not easy to hit the adjacent battery cell when the clip 109 is opened. The upper part of the opposite side of the aluminum plate where the chamfer is opened is cut and thinned so that the lower part of the clip 109 is bent inward. When the clamping fingers of the Y-shaped pneumatic fingers are closed inward, the bent parts 111 of the lower parts of the clips 109 on both sides fit more tightly, and the clamping of the battery cell air bag is more reliable.

[0052] In an optional solution of this embodiment, the bending portion 111 is provided with a clamping surface, and the clamping surface is covered with a soft pad 113 to avoid indentation during clamping. Optionally, the soft pad 113 is made of elastomeric or silicone material.

[0053] Embodiment 2

[0054] The battery cell unloading device in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0055] In an optional solution of this embodiment, the guiding mechanism includes a second support frame 114 and a limiting assembly 115, the limiting assembly 115 is mounted on the second support frame 114, and the limiting assembly 115 is provided with a limiting gap 117. The limiting assembly 115 is provided with symmetrically arranged clamping parts 102 on both sides, and the limiting gap 117 is used to limit and guide the tail of the battery cell body clamped on both sides.

[0056] In this embodiment, generally speaking, multiple rows of stacked cells are inserted in the baking tray, and the pole tabs of two adjacent rows of cells are oriented in opposite directions. Two rows of stacked cells can be inserted and placed in the material frame, and the pole tabs of the two rows of cells are oriented in opposite directions. Figure 1 The battery cell unloading device shown in the figure is provided with clamping parts 102 on both sides of the limiting assembly 115, and the two clamping parts 102 are symmetrically arranged to simultaneously clamp and transport two rows of battery cells in opposite directions, thereby further improving the efficiency of battery cell unloading.

[0057] Since the gap between the cells in the baking tray is small and the gap between the cells in the material frame is large, the accuracy of the placement of the cells is not high when the cells are placed in the material frame. Therefore, the limiting component 115 is arranged between the two clamping parts 102, and only the tail of the cell body on both sides is limited and guided to meet the placement requirements, and the device structure is simpler and the cost is lower.

[0058] In an optional solution of this embodiment, the limiting assembly 115 includes limiting plates 116 spaced apart on the second support frame 114, and a limiting gap 117 is formed between every two limiting plates 116. The setting of the limiting gap 117 needs to correspond to the clamping portion 102. Preferably, a sensor is provided on the limiting plate 116 to sense the position of the battery body, so as to determine whether the battery cell is lifted or lowered into place.

[0059] In an optional solution of this embodiment, the lifting mechanism includes a screw assembly 118 and a driving device, and the screw assembly 118 and the driving device are installed on the second support frame 114. The driving device is specifically a servo motor, and the driving device is connected to the screw of the screw assembly 118 to drive the screw of the screw assembly 118 to rotate. The length direction of the screw assembly 118 is the vertical direction, and the clamping mechanism is connected to the nut of the screw assembly 118 so that the clamping mechanism can reciprocate in the vertical direction, thereby realizing the lifting function.

[0060] In an optional solution of this embodiment, the lifting mechanism further includes a guide rail assembly 119, which is mounted on the second support frame 114, and the guide direction of the guide rail assembly 119 is the vertical direction. The clamping mechanism is connected to the slider of the guide rail assembly 119. When the nut of the screw assembly 118 drives the clamping mechanism to move, the guide rail assembly 119 can guide the movement of the clamping mechanism to make the movement more stable and reliable.

[0061] Embodiment 3

[0062] Embodiment 3 of the present application provides a battery production system, including a battery cell unloading device of any of the above embodiments, and thus has all the beneficial technical effects of the battery cell unloading device of any of the above embodiments, which will not be elaborated here.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. A battery cell unloading device, characterized in that: It includes a lifting mechanism, a clamping mechanism and a guiding mechanism; The lifting mechanism is used to drive the clamping mechanism to rise and fall relative to the guiding mechanism; the clamping mechanism is used to clamp the battery cell air bag; the guiding mechanism is correspondingly provided with a limited gap to limit and guide the battery cell body.

2. The battery core unloading device according to claim 1, characterized in that: The clamping mechanism comprises a first support frame and a clamping portion, and the lifting mechanism is connected to the first support frame; The clamping portion includes a first clamping assembly and a second clamping assembly, and the first clamping assembly and the second clamping assembly are mounted on the first support frame in a one-to-one correspondence; The first clamping assembly and the second clamping assembly are arranged at intervals, and the first clamping assembly is opposite to the head of the battery core air bag, and the second clamping assembly is opposite to the tail of the battery core air bag.

3. The battery core unloading device according to claim 2, characterized in that: The first clamping assembly includes a first connecting plate and at least one clamping claw module, the first connecting plate is connected to the first supporting frame; the clamping claw module is installed on the first connecting plate, and when there are multiple clamping claw modules, the multiple clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells; The second clamping assembly includes a second connecting plate and at least one clamping claw module, the second connecting plate is connected to the first supporting frame; the clamping claw module is installed on the second connecting plate, and when there are multiple clamping claw modules, the multiple clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells.

4. The battery core unloading device according to claim 3, characterized in that: The clamping jaw module comprises a driving member and two clamping pieces arranged opposite to each other; The driving member is a Y-shaped pneumatic finger, and two clamps are respectively connected to the two clamping fingers of the Y-shaped pneumatic finger; the clamp includes a connecting portion and a bending portion that are connected to each other, the connecting portion is connected to the clamping fingers, and the bending portion is bent in the clamping direction to clamp the battery cell air bag.

5. The battery core unloading device according to claim 4, characterized in that: The bending portion is provided with a clamping surface, and the clamping surface is provided with a soft pad.

6. The battery core unloading device according to claim 2, characterized in that: The guiding mechanism comprises a second supporting frame and a limiting assembly, wherein the limiting assembly is mounted on the second supporting frame and the limiting assembly is provided with the limiting gap; The clamping parts are symmetrically arranged on both sides of the limiting assembly, and the limiting gap is used to limit and guide the tail of the battery cell body clamped on both sides.

7. The battery core unloading device according to claim 6, characterized in that: The limiting assembly includes limiting plates spaced apart from each other on the second support frame, and the limiting gap is formed between the limiting plates.

8. The battery core unloading device according to claim 6, characterized in that: The lifting mechanism includes a screw rod assembly and a driving device; The screw assembly and the driving device are installed on the second support frame, and the length direction of the screw assembly is the vertical direction; the driving device is used to drive the screw of the screw assembly to rotate; The clamping mechanism is connected to the nut of the screw rod assembly.

9. The battery core unloading device according to claim 8, characterized in that: The lifting mechanism also includes a guide rail assembly; The guide rail assembly is installed on the second support frame, and the guiding direction of the guide rail assembly is the vertical direction; the clamping mechanism is connected to the slider of the guide rail assembly.

10. A battery production system, characterized in that: It comprises the battery cell unloading device as claimed in any one of claims 1 to 9.

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