Battery piece correction device and method
Through the battery cell correction device with the convex arc correction surface and adsorption function, the problems of low cell correction efficiency and uneven stress distribution are solved, and the correction effect of efficient and low damage is achieved.
Patent Information
- Application Number
- CN202510652577.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-08-26
AI Technical Summary
The existing battery cells have low correction efficiency, and the traditional rigid flattening method has problems such as uneven stress distribution and easy brittle damage, making it difficult to meet the correction needs of high efficiency and high precision.
The cell correction device with the convex arc-shaped correction surface and adsorption function is adopted. The cell is adsorbed with the non-welded belt surface toward the correction surface through the reflexive cooperation, achieving uniform support and correction to avoid stress concentration.
It improves the battery cell correction efficiency, reduces the risk of damage, achieves uniform stress distribution, and meets the correction requirements of high efficiency and high precision.
Smart Images
Figure CN120545236A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic cell processing and manufacturing, and in particular to a cell correction device and method. Background Art
[0002] Amidst the booming global new energy industry, photovoltaic cells, the core vehicle for clean energy conversion, are experiencing a technological evolution driven by high efficiency, ultra-large dimensions, and intelligent technology. Mainstream cell technologies, such as PERC, HJT, TOPCon, and BC, have driven laboratory photovoltaic conversion efficiencies to over 25% through process innovation and breakthroughs in materials engineering. Simultaneously, monocrystalline silicon wafer sizes have leapt to 210mm, significantly increasing power output density per unit area. However, in the pursuit of high efficiency and low cost, mechanical stability issues in the back-end cell manufacturing process have become increasingly prominent, becoming a key factor limiting module reliability and production yield.
[0003] In existing technology, after ribbon welding, solar cells are susceptible to planar warping due to residual stresses generated by the welding thermal cycle and mechanical constraints. To address this deformation, the typical correction process relies on rigid flattening, whereby upper and lower pressure plates apply a concentrated load for forced correction. While this solution can achieve shape correction, it suffers from inherent drawbacks such as low efficiency, uneven stress distribution, and susceptibility to brittle damage. This makes it difficult to meet the dual requirements of correction accuracy and throughput for GW-scale production lines.
[0004] Therefore, the technical problem of the prior art is that the battery cell correction efficiency is low. Summary of the Invention
[0005] The present application provides a battery cell correction device and method, which achieves the technical effect of improving the battery cell correction efficiency by bending the battery cell on the correction surface.
[0006] This application provides a battery cell correction device, which adopts the following technical solutions:
[0007] A battery cell correction device is used for correcting battery cells, wherein the battery cell has a solder strip on one side and does not have a solder strip on the other side, and the side of the battery cell without a solder strip is defined as a non-solder strip side; the correction device comprises: a carrier, the carrier has a correction surface, the correction surface has an adsorption function, the correction surface is arranged in an outwardly convex arc shape, so that the battery cell is adsorbed on the correction surface with the non-solder strip side facing the correction surface, so that the battery cell is corrected; a conveying component, the conveying component is used to convey the battery cell, and the battery cell is transmitted to the correction surface with the non-solder strip side facing the correction surface, and is transmitted and output after correction by the correction surface.
[0008] Preferably, the carrier is cylindrical and has a rotational freedom around an axis, and the correction surface is arranged on a peripheral side surface of the carrier.
[0009] Preferably, the side of the battery cell with the welding strip is defined as the welding strip side; the conveying component includes: a first zone, the first zone is arranged at the transmission front end of the correction surface, the first zone is used to transmit the battery cell into the first zone with the welding strip side facing the first zone, and transmit the battery cell into the correction surface with the non-welding strip side facing the correction surface; a second zone, the second zone is arranged at the transmission rear end of the correction surface, and the second zone is used to transmit the battery cell out of the correction surface.
[0010] Preferably, the first zone includes: a first loading zone, which is used to transmit the loading material with the welding tape surface toward the first loading zone; the first loading zone is used to cooperate with the carrier transmission so that the battery cell is transmitted from the first loading zone to the correction surface with the non-welding tape surface toward the correction surface.
[0011] Preferably, the first area includes: a first loading area, which is used to transfer the material with the welding strip surface toward the first loading area; a second loading area, which is located on one side of the first loading area, and is used to receive the battery cells from the first loading area and transfer them to the correction surface with the non-welding strip surface toward the correction surface.
[0012] Preferably, the first loading area and the second loading area are arranged opposite to each other so that the first loading area and the second loading area form a first interaction section; the second loading area has an adsorption function so that the battery cells located on the first loading area are transferred to the second loading area within the first interaction section.
[0013] Preferably, in the first interaction section, the first loading area is parallel or substantially parallel to the second loading area, and a gap H is formed between the first loading area and the second loading area, and H≤h, wherein h is the height of the warped battery cell.
[0014] This application provides a battery correction method, which adopts the following technical solutions:
[0015] A battery cell correction method is applied to the battery cell correction device, and the correction method includes: inputting the battery cell into the carrier with the non-weld strip surface facing the correction surface, so that the battery cell is adsorbed on the correction surface.
[0016] A battery cell correction method is applied to the battery cell correction device, and the correction method includes: making the battery cell face the first loading area with the solder strip surface; in the first interaction section, the second loading area has an adsorption function, so that the battery cell located on the first loading area is transferred to the second loading area in the first interaction section; the battery cell is input into the carrier with the non-solder strip surface facing the correction surface, so that the battery cell is adsorbed on the correction surface.
[0017] Preferably, in the first interaction section, the first loading area is parallel or substantially parallel to the second loading area, and a gap H is formed between the first loading area and the second loading area, and H≤h, wherein h is the height of the warped battery cell. The method further includes: allowing the battery cell to enter the gap, allowing the battery cell to be initially corrected by the first loading area and the second loading area, and then inputting the carrier through the second loading area with the non-weld strip surface facing the correction surface.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] The convex arc-shaped structure of the correction surface cooperates with the battery cell. Under the action of the adsorption function, the battery cell is tightly attached to the correction surface in the reverse direction to achieve correction and improve the battery correction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the first state of the battery cell described in this application;
[0021] Figure 2 is a schematic diagram of the second state of the battery cell described in this application;
[0022] Figure 3 This is a schematic diagram of the first working state of the carrier described in this application;
[0023] Figure 4 This is a schematic diagram of the second working state of the carrier described in this application;
[0024] Figure 5 This is a first schematic diagram of the transmission assembly described in this application;
[0025] Figure 6 This is a second schematic diagram of the transmission assembly described in this application;
[0026] Figure 7 This is a third schematic diagram of the transmission assembly described in this application;
[0027] Figure 8 This is a fourth schematic diagram of the transmission assembly described in this application;
[0028] Figure 9 is a fifth schematic diagram of the transmission assembly described in this application;
[0029] Figure 10 is a sixth schematic diagram of the transmission assembly described in this application;
[0030] Figure 11 is a seventh schematic diagram of the transmission assembly described in this application;
[0031] Figure 12 yes Figure 11 A magnified view of middle A;
[0032] Figure 13 This is an eighth schematic diagram of the transmission assembly described in this application;
[0033] Figure 14 is a ninth schematic diagram of the transmission assembly described in this application;
[0034] Figure 15 This is the tenth schematic diagram of the transmission component described in this application.
[0035] Explanation of the accompanying drawings: 110, battery cell; 120, welding ribbon; 130, supporting base; 200, carrier; 210, straightening surface; 300, conveying assembly; 310, first zone; 311, first loading zone; 312, second loading zone; 313, first interaction section; 320, second zone; 330, third zone; 331, second interaction section. DETAILED DESCRIPTION
[0036] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application include direct and indirect connections (couplings) unless otherwise specified. In the description of this application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this 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 a limitation to this application.
[0037] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0038] The embodiment of the present application provides a battery cell 110 correction device, which reduces the possibility of damage to the battery cell 110 during the correction process by bending the battery cell 110 on the correction surface 210.
[0039] In order to better understand the above technical solution, the following will be described in detail with reference to the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.
[0040] During the process of welding the cell 110 and the soldering ribbon 120, there is a significant difference in thermal expansion coefficients between the soldering ribbon 120 and the cell 110. When the cell 110 is subjected to high temperatures, the area covered by the soldering ribbon 120 and the bare cell 110 surface undergo asymmetric expansion due to uneven heating. Specifically, the high expansion of the metal material of the soldering ribbon 120 on the side of the soldering ribbon 120 forms a local tensile stress, while the low expansion of silicon on the cell 110 surface produces a compressive stress. The superposition of the two causes the cell 110 to exhibit saddle-shaped warping. This deformation has anisotropic characteristics, and its maximum displacement can reach more than 30% of the thickness of the cell 110, and it shows a nonlinear aggravation trend as the size of the silicon wafer increases. In other words, during the welding process, the contact area between the soldering ribbon 120 and the cell 110 reaches a high temperature instantaneously, resulting in non-uniform thermal expansion of local materials (such as the tin alloy layer of the soldering ribbon 120, the aluminum grid line of the cell 110 and the silicon substrate); due to the silicon material (thermal expansion coefficient ~2.6×10 -6 / ℃) and the metal welding strip 120 (such as Sn63Pb37, thermal expansion coefficient 20×10 -6 The significant difference in thermal expansion coefficients ( / °C) between the two cells leads to asynchronous contraction rates during cooling, forming residual tensile stress at the interface and forcing the cell 110 to bend in the direction of stress release. After solidification, the solder ribbon 120 forms a rigid constraint on the surface of the cell 110. As it cools and contracts, it applies a tensile load to the cell 110, causing the side of the cell 110 with the solder ribbon 120 to shrink more, while the side without the solder ribbon 120 shrinks less, causing the cell 110 to warp toward the side with the solder ribbon 120. In other words, the cell 110 arches toward the side without the solder ribbon 120.
[0041] like Figure 1 、 2 As shown, the present application corrects the warping of the battery cell 110. Generally, after the battery cell 110 is warped by welding, in order to prevent the warping of the battery cell 110 from worsening, the placement direction of the battery cell 110 has certain requirements. Specifically, the side of the battery cell 110 with the welding ribbon 120 needs to be placed downward, and the side of the battery cell 110 without the welding ribbon 120 needs to be placed upward, that is, the battery cell 110 is arched upward. In this way, due to the certain gravity of the battery cell 110 itself, it can have a certain resistance effect on the warping of the two sides of the battery cell 110, preventing the warping of the battery cell 110 from worsening. On the contrary, if the side of the battery cell 110 with the welding ribbon 120 is placed upward and the side of the battery cell 110 without the welding ribbon 120 is placed downward, that is, the battery cell 110 is arched downward, in this way, the warped two sides of the battery cell 110 cannot be suppressed by the gravity of the battery cell 110 itself, which will cause the two sides of the battery cell 110 to warp further.
[0042] In the present application, the placement state of the battery cell 110 is defined as including a first state and a second state. Specifically, when the battery cell 110 is placed on the supporting base 130, the welding ribbon 120 faces away from the supporting base 130 as the first state, and the battery cell 110 is arched in the direction toward the supporting base 130, that is, the non-weld ribbon side of the battery cell is facing the supporting base 130; when the battery cell 110 is placed on the supporting base 130, the welding ribbon 120 faces toward the supporting base 130 as the second state, and the battery cell 110 is arched away from the supporting base 130, that is, the welding ribbon side of the battery cell is facing the supporting base 130; it should be noted that the above-mentioned supporting base 130 refers to any item on which the battery cell 110 can be placed, and is only used to define the state of the battery cell 110, that is, the direction of the welding ribbon 120; in the present application, the supporting base 130 can be the first area 310, the second area 320 and the third area 330, etc.
[0043] This application provides a battery cell 110 correction device, such as Figures 3 to 15 As shown, it includes a carrier 200, a conveying assembly 300 and a second conveying assembly 300. The carrier 200 is used to cooperate with the battery cell 110 to bend so that the battery cell 110 is positioned on the carrier 200 in a first state for correction; the conveying assembly 300 is used to input or output the battery cell 110 to the carrier 200.
[0044] like Figure 2 、 3As shown, the carrier 200 is used to cooperate with the reverse curvature of the battery cell 110, so that the battery cell 110 is positioned on the carrier 200 in a first state for correction. Correction refers to the process of straightening the battery cell 110 from a warped state, or the process of resisting warping of the battery cell 110. The carrier 200 has a correction surface 210, which has an adsorption function. The correction surface 210 is arranged in an outwardly convex arc shape, so that the battery cell 110 in the first state is adsorbed on the correction surface 210, thereby correcting the battery cell 110. Specifically, a vacuum adsorption structure is provided inside the carrier 200, and a plurality of array adsorption holes are provided on the correction surface 210. When negative pressure is formed inside the carrier 200, so that the battery cell 110 is adsorbed on the correction surface 210, the battery cell 110 is tightly fitted between the correction surface 210 in the first state. In other words, the non-weld strip 120 surface of the battery cell 110 faces the correction surface 210, and the welded strip 120 surface of the battery cell 110 faces away from the correction surface 210. In this way, the battery cell 110 is adsorbed on the correction surface 210 in the opposite direction of the warping, and the correction surface 210 resists the warping of the battery cell 110 to achieve the correction of the battery cell 110.
[0045] Preferably, the carrier 200 is cylindrical and has rotational freedom around its axis. The correction surface 210 is disposed on a lateral surface of the carrier 200. This allows simultaneous correction of a battery string or multiple battery cells 110, improving the correction efficiency of the battery cells 110. When the battery cell 110 is placed on the correction surface 210 in a first position (i.e., with the solder ribbon 120 facing away from the carrier base 130), the adsorption function of the correction surface 210 stably adsorbs the battery cell 110 onto the correction surface 210. Because the correction surface 210 is an outwardly convex arc, the battery cell 110 naturally stretches along the arc under the action of the adsorption force, thereby correcting any warped battery cell 110. In other words, the carrier 200 is cylindrical and has rotational freedom around its axis. The correction surface 210 is disposed on a lateral surface of the carrier 200. The correction surface 210 is convex and has an adsorption function. When the battery cell 110 is adsorbed on the correction surface 210 in the first state, the convex arc-shaped correction surface 210 can generate uniform support force on the battery cell 110, so that the battery cell 110 is evenly stressed during the correction process, avoiding hidden cracks caused by stress concentration.
[0046] Thus, through the combination of the convex arc-shaped correction surface 210 and the adsorption function, the stress applied to the battery cell 110 during the correction process is evenly distributed, avoiding the problem of hidden cracks caused by excessive local stress in traditional rigid correction methods. For example, when the battery cell 110 is warped, it is adsorbed on the correction surface 210. The curvature of the arc surface allows various parts of the battery cell 110 to gradually stretch and release stress, thus achieving gentle correction and reducing the risk of damage.
[0047] It is understandable that the curvature of the correction surface 210 can be selected according to the size of the battery cell 110 .
[0048] like Figures 5 to 15 As shown, the conveying assembly 300 is used to input or output the battery cell 110 to the carrier 200. Figure 5 、 6 As shown, the conveying assembly 300 includes a first zone 310 and a second zone 320. The first zone 310 is disposed at the transmission front end of the straightening surface 210. The first zone 310 is used to convey the battery cell 110 in a first state and transmit the battery cell 110 to the straightening surface 210 in the first state. The second zone 320 is disposed at the transmission rear end of the straightening surface 210. The second zone 320 is used to transmit the battery cell 110 out of the straightening surface 210. The first zone 310 is used to carry and transmit the battery cell 110. The battery cell 110 is located on the first zone 310 in the first state. The battery cell 110 is transmitted from the first zone 310 to the straightening surface 210 in the first state. The straightening surface 210 reversely absorbs the battery cell 110 through adsorption to complete the straightening. The battery cell 110, which has been straightened by the straightening surface 210, is then received by the second zone 320 and transmitted out of the second zone 320.
[0049] like Figures 5 to 8 As shown, the first zone 310 and the second zone 320 are located on either side of the carrier 200. The first zone 310 feeds the battery cells 110 into the carrier 200, while the second zone 320 outputs the battery cells 110 after correction by the carrier 200. The conveying direction of the first zone 310 matches the rotation direction of the carrier 200. When the battery cells 110 are conveyed to the correction surface 210, they contact and are attracted to the correction surface 210. As the carrier 200 rotates, the battery cells 110 complete the correction process on the correction surface 210 and are then conveyed to the second zone 320. The second zone 320 then transfers the corrected battery cells 110 to subsequent processes.
[0050] In one embodiment, Figure 5 、 7 As shown, the first zone 310 and the second zone 320 can be the same conveyor belt, which is connected to the carrier 200 in the form of a roller. The conveyor belt can be driven by an additional active wheel, or the carrier 200 can be used as an active wheel to drive the conveyor belt. In this way, the battery cell 110 is input through the first zone 310, corrected by the correction surface 210, and then output through the second zone 320; wherein, the conveyor belt needs to be provided with holes so that the battery cell 110 can be adsorbed by the correction surface 210 when passing through the correction surface 210.
[0051] In another embodiment, Figure 6 、 8As shown, the first zone 310 and the second zone 320 can be conveying units that are separated from the carrier 200 and are arranged on the input front end and the output rear end of the carrier 200. The conveying unit can be composed of one or more conveyor belts. The conveying unit is not connected to the carrier 200, and only the conveying unit is matched with the carrier 200. In this way, it is necessary to actively rotate the carrier 200 to match the first zone 310 and the second zone 320, so that the carrier 200 can receive the battery cell 110 input from the first zone 310 and output it from the second zone 320.
[0052] The first area 310 and / or the second area 320 have an adsorption function; preferably, both the first area 310 and the second area 320 have an adsorption function, which stably adsorbs the battery cell 110 on the conveying surface, ensuring that the battery cell 110 does not slip or shift during conveyance. An adsorption structure can be provided on the first area 310 and / or the second area 320, wherein the adsorption structure is a conventional configuration and is not further described here; correspondingly, the first area 310 and / or the second area 320 are provided with a cavity to allow the battery cell 110 to be adsorbed on the first area 310 and / or the second area 320.
[0053] As an implementation method, Figure 5 、 6 As shown, the first area 310 and the second area 320 are respectively arranged on both sides of the carrier 200, and the first area 310 and the second area 320 can be arranged at an angle; as another embodiment, as shown Figure 7 、 8 As shown, the first area 310 and the second area 320 are arranged horizontally, and the first area 310 and the second area 320 are respectively arranged on the upper and lower sides of the carrier 200. The first area 310 (or the second area 320) located on the lower side of the carrier 200 has an adsorption function to prevent the battery cell 110 from falling.
[0054] On the basis of the above, the structure of the transmission component 300 is further optimized. The transmission component 300 can also be implemented as follows:
[0055] The conveyor assembly 300 includes a first area 310 and a second area 320. The first area 310 is disposed at the front transmission end of the straightening surface 210 and is used to convey the cell 110 in the second state and to transfer the cell 110 to the straightening surface 210 in the first state. The second area 320 is disposed at the rear transmission end of the straightening surface 210 and is used to transfer the cell 110 out of the straightening surface 210. In other words, the conveyor assembly 300 includes the first area 310 and is used to convey the cell 110 in the second state (with the solder ribbon 120 facing the support base 130) and to transfer the cell 110 to the straightening surface 210 in the first state.
[0056] The second state is defined as the welding strip 120 facing the supporting base 130; Figure 9 、 10 As shown, the first area 310 includes a first loading area 311, which is used for loading the battery cell 110; the first loading area 311 is used to cooperate with the carrier 200 in transmission, so that the battery cell 110 is transmitted from the first loading area 311 to the straightening surface 210; wherein, the battery cell 110 is located on the first loading area 311 in the second state, and the battery cell 110 is located on the straightening surface 210 in the first state.
[0057] Specifically, such as Figure 9 、 10 As shown, the first area 310 includes a first loading area 311, which is used to load the battery cells 110, and the first loading area 311 is in transmission cooperation with the carrier 200. When the battery cell 110 is located on the first loading area 311, it is in the second state, that is, the welding ribbon 120 faces the supporting base 130. When the battery cell 110 is transferred to the matching position of the first loading area 311 and the carrier 200, the correction surface 210 of the carrier 200 receives and absorbs the battery cell 110 from the first loading area 311. At this time, the state of the battery cell 110 is converted to the first state (the welding ribbon 120 faces away from the supporting base 130), and is corrected on the correction surface 210 as the carrier 200 rotates.
[0058] Optionally, the first loading area 311 has an adsorption function, which can stably adsorb the battery cell 110 on the conveying surface of the first loading area 311, thereby ensuring the accuracy and stability of the battery cell 110 when being conveyed to the loading position.
[0059] As an implementation method, Figure 9 As shown, the second zone 320 can be a conveyor belt connected to the carrier 200, and a driving wheel can be provided to drive the conveyor belt to drive the carrier 200 to rotate; or the carrier 200 can be used as a driving wheel to drive the conveyor belt.
[0060] As another embodiment, Figure 10 As shown, the second zone 320 may be a conveying unit detached from the carrier 200 and arranged at the rear end of the carrier 200 output. The conveying unit may be composed of one or more conveyor belts. The conveying unit is not connected to the carrier 200. The conveying unit is only coordinated with the carrier 200 to rotate the carrier 200 to cooperate with the second zone 320 to output the battery cell 110.
[0061] Furthermore, the conveying assembly 300 is provided with a double loading area structure. Figure 11 、 12As shown in Figures 13 and 13, the first area 310 includes a first loading area 311 and a second loading area 312: the first loading area 311 is used to load the battery cells 110 and transfer the battery cells 110 in the second state; the second loading area 312 is located on one side of the first loading area 311, and the second loading area 312 is used to receive the battery cells 110 from the first loading area 311 and transmit the input to the correction surface 210; wherein, the battery cells 110 are located on the first loading area 311 in the second state, and the battery cells 110 are located on the second loading area 312 in the first state. Specifically, the first loading area 311 is used to load the battery cells 110 and transfer the battery cells 110 in the second state; the second loading area 312 is located on one side of the first loading area 311, and is used to receive the battery cells 110 from the first loading area 311 and transmit them to the correction surface 210. The battery cells 110 are in the second state on the first loading area 311 and in the first state on the second loading area 312.
[0062] Furthermore, Figure 11 、 12 As shown, the first loading area 311 and the second loading area 312 are arranged opposite each other, forming a first interaction section 313. The second loading area 312 has an adsorption function, so that the battery cell 110 located on the first loading area 311 is transferred to the second loading area 312 within the first interaction section 313. Within the first interaction section 313, the first loading area 311 and the second loading area 312 are parallel or substantially parallel. A gap H is formed between the first loading area 311 and the second loading area 312, and H ≤ h, where h is the height of the warped battery cell 110.
[0063] like Figure 11 、 12As shown, the first loading area 311 and the second loading area 312 are arranged opposite to each other to form a first interactive section 313. The second loading area 312 has an adsorption function. In the first interactive section 313, the first loading area 311 and the second loading area 312 are parallel or substantially parallel, and a gap H is formed between the two, and H≤h (h is the height of the warped and arched battery cell 110). Specifically, when the battery cell 110 is transferred to the first interactive section 313 along with the first loading area 311, the second loading area 312 adsorbs the battery cell 110 from the first loading area 311 through the adsorption function. Since the gap H is small, less than or equal to the height h of the warped and arched battery cell 110, the warped part of the battery cell 110 can smoothly pass through the gap H, realizing the transition from the second state to the first state, and stably adsorbed on the second loading area 312. In other words, when the battery cell 110 enters the first interaction section 313, the second loading area 312 turns on the adsorption function, so that the battery cell 110 can be transferred from the first loading area 311 to the second loading area 312; it should be noted that when the battery cell 110 is transferred from the first loading area 311 to the second loading area 312, the first loading area 311 does not have the adsorption function.
[0064] Furthermore, by controlling the gap H to be less than or equal to the height h of the warped cell 110, the warped cell 110 can be pre-flattened by the first loading area 311 and the second loading area 312, further improving the correction effect of the cell 110. The second loading area 312 transfers the cell 110 in the first state to the correction surface 210, which absorbs the cell 110 and performs the correction process. The corrected cell 110 is then transferred to the second area 320, which transfers the cell 110 to subsequent processes.
[0065] Optionally, the first loading area 311 has an adsorption function, which can stably adsorb the battery cell 110 on the conveying surface of the first loading area 311, thereby ensuring the accuracy and stability of the battery cell 110 when it is conveyed to the loading position. The position switching of the battery cell 110 between the first loading area 311 and the second loading area 312 can be achieved by controlling the adsorption function on the first loading area 311 and the second loading area 312. For example, by canceling the adsorption function on the first loading area 311 and turning on the adsorption function on the second loading area 312, the battery cell 110 can be transferred from the first loading area 311 to the second loading area 312, and switched from the second state to the first state.
[0066] In one embodiment, Figure 11As shown, the second loading area 312 and the second area 320 can be the same conveyor belt, which is connected to the carrier 200 in the form of a roller. The conveyor belt can be driven by an additional active wheel, or the carrier 200 can be used as an active wheel to drive the conveyor belt. In this way, the battery cell 110 is input through the second loading area 312, corrected by the correction surface 210, and then output through the second area 320; wherein, the transmission belt needs to be provided with holes so that the battery cell 110 can be adsorbed by the correction surface 210 when passing through the correction surface 210.
[0067] In another embodiment, Figure 13 As shown, the second loading area 312 and the second area 320 can be conveying units that are separated from the carrier 200 and are arranged on the input front end and output rear end of the carrier 200. The conveying unit can be composed of one or more conveyor belts. The conveying unit is not connected to the carrier 200, and only the conveying unit is coordinated with the carrier 200. In this way, it is necessary to actively rotate the carrier 200 to cooperate with the second loading area 312 and the second area 320, so that the carrier 200 can receive the battery cell 110 input from the second loading area 312 and output it from the second area 320.
[0068] The battery cell 110 needs to be corrected in the first state. However, in order to prevent the battery cell 110 from being warped again, the battery cell 110 needs to be kept in the second state after correction. Therefore, in order to keep the output battery cell 110 in the second state to prevent the warping from being restored, the present application sets up a third zone 330 to switch the corrected battery cell 110 from the first state to the second state.
[0069] Further, such as Figure 14 、 15 As shown, the conveying component 300 also includes a third zone 330, which is used to receive the battery cells 110 from the second loading area 312 and transmit the output; the third zone 330 is arranged opposite to the second loading area 312, so that the third zone 330 and the second loading area 312 form a second interaction section 331; so that the battery cells 110 located on the second loading area 312 are transferred to the third zone 330 within the second interaction section 331; wherein, the battery cells 110 located on the second loading area 312 are in a first state, and the battery cells 110 located on the third zone 330 are in a second state.
[0070] In one embodiment, Figure 14 、 15As shown, the first loading area 311 and the third area 330 are located below the second loading area 312, with the transmission surfaces of the first loading area 311 and the third area 330 facing downward, and the transmission surface of the second loading area 312 facing upward. Specifically, the first loading area 311 and the third area 330 are located below the second loading area 312, with the transmission surfaces of the first loading area 311 and the third area 330 facing downward, and the transmission surface of the second loading area 312 facing upward. In this upper and lower arrangement, the battery cell 110 is conveyed in the first loading area 311 in the second state (the solder ribbon 120 faces the supporting base 130 downward), and is transferred to the second loading area 312 through the first interactive section 313. At this time, the state of the battery cell 110 is converted to the first state (the solder ribbon 120 faces the transmission surface of the second loading area 312 upward). After being conveyed on the second loading area 312 and adsorbed and corrected by the correction surface 210, it is transferred to the third area 330 through the second interactive section 331, and the state is converted to the second state again (the solder ribbon 120 faces the transmission surface of the third area 330 downward), and is conveyed from the third area 330 to the subsequent process. It should be noted that after being corrected by the correction surface 210, the battery cell 110 is in the first state. Therefore, it needs to circulate on the conveyor assembly 300 once and then return to the second loading area 312. It is then transferred from the second loading area 312 to the third area 330 on the second interaction section 331. The transfer of the battery cell 110 can be achieved by disabling the adsorption function of the second loading area 312. It is understood that the positions of the first loading area 311 and the third area 330 can be interchanged. Further preferably, in the second loading area 312, the adsorption functions of the first interaction section 313 and the second interaction section 331 can be independently controlled.
[0071] During the entire conveying process, the adsorption functions of each zone cooperate with each other to ensure stable conveyance and transfer of the battery cell 110 in different states, thereby avoiding damage to the battery cell 110 due to improper state conversion during the conveying process.
[0072] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0073] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A battery cell correction device, characterized in that: Used for correcting a battery cell (110), wherein the battery cell (110) has a soldering strip (120) on one side and does not have a soldering strip (120) on the other side, and the side of the battery cell (110) that does not have a soldering strip (120) is defined as a non-soldering strip side; the correction device comprises: A carrier (200), wherein the carrier (200) has a correction surface (210), the correction surface (210) has an adsorption function, and the correction surface (210) is arranged in an outwardly convex arc shape, so that the battery cell (110) is adsorbed on the correction surface (210) with the non-weld surface facing the correction surface (210), so that the battery cell (110) is corrected; A conveying assembly (300) is used to convey a battery cell (110), and to transmit the battery cell (110) to the correction surface (210) with the non-welding strip surface facing the correction surface (210), and to transmit the battery cell (110) out after being corrected by the correction surface (210).
2. The battery cell correction device according to claim 1, characterized in that: The carrier (200) is cylindrical and has a rotational freedom of rotation around an axis. The correction surface (210) is arranged on a peripheral side surface of the carrier (200).
3. The battery cell correction device according to claim 2, characterized in that: The side of the battery cell (110) having the welding strip (120) is defined as the welding strip side; the transmission component (300) includes: a first zone (310), the first zone (310) being arranged at a transmission front end of the straightening surface (210), the first zone (310) being used to allow the battery cell (110) to be transmitted and input into the straightening surface (210) with the welding strip surface facing the first zone, and to allow the battery cell (110) to be transmitted and input into the straightening surface (210) with the non-welding strip surface facing the straightening surface (210); The second area (320) is arranged at the transmission rear end of the correction front surface (210), and the second area (320) is used for the transmission output of the battery cell (110) of the correction front surface (210).
4. The battery cell correction device according to claim 3, characterized in that: The first zone (310) includes: A first loading area (311), wherein the first loading area (311) is used for transmitting loading with the welding strip surface facing the first loading area (311); the first loading area (311) is used for transmission cooperation with the carrier (200), so that the battery cell (110) is transmitted from the first loading area (311) to the straightening front surface (210) with the non-welding strip surface facing the straightening front surface (210).
5. The battery cell correction device according to claim 3, characterized in that: The first zone (310) includes: A first loading area (311), the first loading area (311) being used for transmitting loading with the welding strip surface facing the first loading area (311); A second loading area (312), the second loading area (312) is located on one side of the first loading area (311), and the second loading area (312) is used to receive the battery cells (110) from the first loading area (311) and transmit them to the straightening front surface (210) with the non-welding strip surface facing the straightening front surface (210).
6. The battery cell correction device according to claim 5, characterized in that: The first loading area (311) and the second loading area (312) are arranged opposite to each other so that the first loading area (311) and the second loading area (312) form a first interaction section (313); the second loading area (312) has an adsorption function so that the battery cell (110) located on the first loading area (311) is transferred to the second loading area (312) in the first interaction section (313).
7. The battery cell correction device according to claim 6, characterized in that: In the first interaction section (313), the first loading area (311) and the second loading area (312) are parallel or substantially parallel, and a gap H is formed between the first loading area (311) and the second loading area (312), and H≤h, wherein h is the height of the warped and arched battery cell (110).
8. A battery cell correction method, characterized in that: Applicable to the battery cell correction device according to any one of claims 1 to 7, the correction method comprising: The battery cell (110) is fed into the carrier (200) with the non-welding surface facing the straightening surface (210), so that the battery cell (110) is adsorbed on the straightening surface (210).
9. A battery cell correction method, characterized in that: Applicable to the battery cell correction device according to claim 6, the correction method includes: The battery cell (110) is positioned with its welding strip facing the first loading area (311); In the first interaction section (313), the second loading area (312) has an adsorption function, so that the battery cell (110) located on the first loading area (311) is transferred to the second loading area (312) in the first interaction section (313); The battery cell (110) is fed into the carrier (200) with the non-welding surface facing the straightening surface (210), so that the battery cell (110) is adsorbed on the straightening surface (210).
10. A battery cell correction method according to claim 9, characterized in that: In the first interaction section (313), the first loading area (311) and the second loading area (312) are parallel or substantially parallel, a gap H is formed between the first loading area (311) and the second loading area (312), and H≤h, wherein h is the height of the battery cell (110) that is warped and arched, and the method further comprises: The battery cell (110) is placed into the gap, and the battery cell (110) is initially corrected by the first loading area (311) and the second loading area (312), and then fed into the carrier (200) through the second loading area (312) with the non-welding strip surface facing the correction surface (210).