Battery formation equipment

Abstract

The utility model is suitable for the technical field of battery manufacturing, and provides battery formation equipment, which comprises a rack, a battery formation device and a battery formation device, the formation device is accommodated in the cavity; the formation device comprises a first press machine mechanism, a second press machine mechanism and at least two charging and discharging modules, and the first press machine mechanism comprises a first fixed frame, a second fixed frame and a first movable frame movably arranged between the first fixed frame and the second fixed frame in the first direction; the second press mechanism comprises a third fixed frame and a second movable frame, the third fixed frame is arranged on the side, away from the first fixed frame, of the second fixed frame, the second movable frame is movably arranged between the second fixed frame and the third fixed frame in the first direction, and the first movable frame and the second movable frame are used for supporting a battery respectively; the charging and discharging modules are arranged on the second fixing frame and the third fixing frame respectively. According to the battery formation equipment provided by the embodiment of the invention, the space utilization rate is improved, and the occupied space is relatively small.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery formation device. Background Technology

[0002] In the battery production process, formation equipment is needed to perform formation and / or capacity grading on the batteries. Battery formation refers to the process of activating the positive and negative electrode materials inside the battery through a certain charge and discharge method, thereby improving the overall performance of the lithium battery, including charge and discharge performance, self-discharge, and storage. Battery capacity grading refers to measuring the actual capacity of each battery through a complete charge and discharge cycle test, and then screening and classifying the batteries according to their capacity and performance indicators.

[0003] Formation equipment typically employs a multi-layered stacked layout with multiple independent chambers. Each chamber houses a formation unit, which independently presses and charges / discharges the batteries on a tray. While this structure allows for the simultaneous processing of multiple batches of batteries, each formation unit and its corresponding chamber require a fixed amount of space, resulting in a loose overall structure and low space utilization in limited production areas. This increases the difficulty and cost of plant layout.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0005] In view of this, embodiments of this application provide a battery formation apparatus that can improve the problem of low space utilization in formation apparatus.

[0006] This application provides a battery formation apparatus, comprising: a frame with a cavity inside; a formation device housed within the cavity; the formation device includes a first press mechanism, a second press mechanism, and at least two charge / discharge modules; the first press mechanism includes a first fixed frame, a second fixed frame, and a first movable frame, the first fixed frame and the second fixed frame being fixed to the frame and spaced apart along a first direction, the first movable frame being movably disposed between the first fixed frame and the second fixed frame along the first direction; the second press mechanism includes a third fixed frame and a second movable frame, the third fixed frame being fixed to the frame and disposed on the side of the second fixed frame away from the first fixed frame, the second movable frame being movably disposed between the second fixed frame and the third fixed frame along the first direction, the first movable frame and the second movable frame respectively supporting the battery, and at least two charge / discharge modules respectively disposed on the second fixed frame and the third fixed frame.

[0007] In the battery formation equipment provided in this application embodiment, the first press mechanism and the second press mechanism in the formation device can share the second fixed frame, saving one fixed frame and reducing the space occupied by the two press mechanisms in the first direction; furthermore, a single formation device in one cavity integrates the first press mechanism and the second press mechanism, enabling the formation device in one cavity to perform formation processing on two layers of batteries. Compared with the method of accommodating two press mechanisms in two separate cavities, the battery formation equipment provided in this application embodiment saves the total space occupied by the press mechanism and its cavity, improves the integration and compactness of the battery formation equipment, helps to reduce the size of the battery formation equipment, significantly improves the space utilization of the formation equipment, and can adapt to the intensive and efficient layout requirements of battery production workshops.

[0008] In some embodiments, the first press mechanism further includes a first connecting rod extending along the first direction, the first connecting rod being fixedly connected between the first fixed frame and the second fixed frame, the first movable frame being connected to a first linear bearing, and the first connecting rod passing through the first linear bearing; the second press mechanism further includes a second connecting rod extending along the first direction, the second connecting rod being fixedly connected between the second fixed frame and the third fixed frame, the second movable frame being connected to a second linear bearing, and the second connecting rod passing through the second linear bearing.

[0009] By adopting the above technical solution, the first connecting rod can fix the first fixed frame and the second fixed frame together, thereby improving the stability of the pressing process; the first connecting rod can also guide the movement of the first movable frame; the second connecting rod can also play the role of rigid connection and movement guidance.

[0010] In some embodiments, both the first and second movable frames include a tray positioning element for connection to a tray containing batteries.

[0011] By adopting the above technical solution, the first and second movable frames have high alignment accuracy with the tray, so that the charging and discharging module can be accurately connected to the battery, improving the reliability of the formation process.

[0012] In some embodiments, the first fixed frame and the second fixed frame are respectively provided with support limiting structures. The support limiting structure on the first fixed frame is used to support the tray on the side of the first movable frame near the second fixed frame, and the support limiting structure on the second fixed frame is used to support the tray on the side of the second movable frame near the third fixed frame.

[0013] By adopting the above technical solution, the support and limiting structure can provide support and initial limiting for the pallet transported to the formation device, improve the stability of the pallet movement, and help improve the alignment accuracy between the pallet and the moving frame.

[0014] In some embodiments, the support limiting structure includes at least two support columns arranged opposite each other along a second direction, and the ends of the support columns are provided with limiting portions for limiting the pallet at least along the second direction; a first guide member and a second guide member are fixed on the first movable frame and the second movable frame respectively, arranged opposite each other along a third direction, for limiting the pallet along the third direction, the second direction intersecting the third direction and being perpendicular to the first direction respectively.

[0015] By adopting the above technical solution, the support and limiting structure can limit the pallet at least along the second direction. Furthermore, during the movement of the pallet, the first guide and the second guide limit the position of the pallet along the third direction, thereby improving the alignment accuracy between the pallet and the first and second movable frames and enhancing the reliability of the formation process.

[0016] In some embodiments, the first guide member has a first guide ramp, which is inclined relative to a first direction and a third direction; the second guide member has a second guide ramp, which is inclined relative to the first direction and a third direction.

[0017] By adopting the above technical solution, the first guide ramp and the second guide ramp can play a guiding role, allowing the pallet to move and adjust its position along the first guide ramp and the second guide ramp, making it less likely for the pallet to get stuck.

[0018] In some embodiments, the limiting portion includes a support surface and a limiting surface connected to each other, the support surface being perpendicular to a first direction and the limiting surface being perpendicular to a second direction; the first movable frame has an initial position near the first fixed frame and a pressing position near the second fixed frame, and the second movable frame has an initial position near the second fixed frame and a pressing position near the third fixed frame; in the initial position, along the first direction, the highest point of the first guide slope is not higher than the support surface, and the support surface is not higher than the highest point of the second guide slope.

[0019] By adopting the above technical solution, multiple support columns position the pallet in the second direction, and the first guide ramp and the second guide ramp limit the moving pallet in the third direction, thereby improving the positioning accuracy of the pallet.

[0020] In some embodiments, the formation apparatus further includes a first driving member and a second driving member, the first driving member being connected to a first movable frame and used to drive the first movable frame to move along a first direction, and the second driving member being connected to a second movable frame and used to drive the second movable frame to move along the first direction.

[0021] By adopting the above technical solution, the first driving component and the second driving component can be driven independently, which is conducive to achieving efficient continuous operation; setting driving components separately can provide sufficient driving force for the first movable frame and the second movable frame, thereby improving the stability of movement.

[0022] In some embodiments, the first movable frame and the second movable frame are respectively provided with pressing limit rods. The pressing limit rod on the first movable frame is used to abut against the second fixed frame, and the pressing limit rod on the second movable frame is used to abut against the third fixed frame.

[0023] By adopting the above technical solution, the risk of battery damage due to overvoltage in the press mechanism can be reduced.

[0024] In some embodiments, the pressing limiting rod includes a main rod extending in a first direction, a buffer block connected to the end of the main rod, and a screw connecting the main rod and the buffer block, wherein the screw can adjust the distance between the buffer block and the main rod.

[0025] By adopting the above technical solution, the buffer block of the pressing and limiting rod can provide a buffering effect and is not easily damaged by the mechanical structure; the screw can adjust the height of the buffer block on the main rod along the first direction to adapt to batteries of different heights.

[0026] In some embodiments, the charge-discharge module includes a positive charging probe, a negative charging probe, and a negative pressure module. The positive charging probe and the negative charging probe are used to charge the battery, and the negative pressure module is used to extract gas from the battery.

[0027] By adopting the above technical solution, the charging and discharging module charges the battery through the positive charging probe and the negative charging probe, and the negative pressure module is used to extract the air generated during the battery charging process for formation operation.

[0028] In some embodiments, the formation apparatus further includes a fire-fighting structure disposed on the second fixed frame and the third fixed frame. The fire-fighting structure includes a fire-fighting pipeline and a nozzle. The fire-fighting pipeline is used to transmit the fire-fighting medium, and the nozzle is used to spray the fire-fighting medium. And / or, the formation apparatus further includes a plurality of cooling fans, which are respectively disposed on the second fixed frame and the third fixed frame.

[0029] By adopting the above technical solutions, the fire protection structure can perform fire protection treatment on the battery, and the cooling fan can dissipate heat from the battery, reducing the fire risk of the battery formation equipment and improving the reliability of the battery formation equipment.

[0030] In some embodiments, the first direction is the vertical direction.

[0031] By adopting the above technical solution, the overall height of the battery formation equipment and the space occupied in the vertical direction are reduced.

[0032] In some embodiments, the frame is provided with multiple cavities, and the multiple cavities are arranged simultaneously in the vertical and horizontal directions; the battery formation equipment includes multiple formation devices, which are respectively disposed in the multiple cavities.

[0033] By adopting the above technical solutions, the battery formation equipment has a high degree of integration, can process multiple battery trays simultaneously, achieve parallel operation, and improve processing efficiency.

[0034] In some embodiments, the first fixing frame and the second fixing frame are respectively provided with liquid receiving trays.

[0035] By adopting the above technical solution, the receiving tray can immediately receive and contain the electrolyte flowing out of the battery, preventing it from dripping, flowing or spreading directly to other areas inside the equipment, thereby improving the reliability and lifespan of the equipment.

[0036] In some embodiments, the device further includes a tray feeding device having at least two tray supports spaced apart along a first direction, each tray support supporting one layer of trays, and the tray feeding device being able to place at least two trays in a first movable frame and a second movable frame, respectively.

[0037] By adopting the above technical solution, the tray feeding device can simultaneously place trays and batteries on two press mechanisms in one cavity, resulting in high feeding efficiency. Furthermore, the tray feeding device, in conjunction with the improved formation device of this application, improves feeding and formation efficiency, significantly enhancing battery production efficiency.

[0038] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a battery formation apparatus provided in some embodiments of this application;

[0041] Figure 2 for Figure 1 A schematic diagram of the formation device in the battery formation equipment shown;

[0042] Figure 3 for Figure 2 A schematic diagram of the chemical conversion device from another angle;

[0043] Figure 4 for Figure 3A schematic diagram of the first press mechanism in the chemical formation device shown;

[0044] Figure 5 for Figure 2 A schematic diagram of the formation device in the pressing state;

[0045] The markings in the diagram mean:

[0046] 1000 Battery formation equipment; 100 Formation device; 200 Frame; 210 Cavity; 220 Separator; 300 Tray; 10 First press mechanism; 11 First fixed frame; 12 Second fixed frame; 13 First movable frame; 131 Tray positioning component; 132 Pressing limit rod; 1321 Main rod; 1322 Buffer block; 1323 Screw; 14 First connecting rod; 15 First linear bearing; 16 Liquid receiving tray; 20 Second press mechanism; 21 Third fixed frame; 22 Second movable frame; 23 Second connecting rod; 24 Second linear bearing; 30 Charge / discharge module; 31 Positive electrode charging probe; 3 2. Negative electrode charging probe; 33. Negative pressure module; 41. First driving component; 42. Second driving component; 50. Support and limiting structure; 51. Support column; 511. Limiting part; 5111. Support surface; 5112. Limiting surface; 52. First guide component; 521. First guide slope; 53. Second guide component; 531. Second guide slope; 60. Fire protection structure; 61. Fire protection pipeline; 62. Sprinkler head; 70. Cooling fan. Detailed Implementation

[0047] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0053] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0055] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0056] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0057] Currently, formation equipment typically employs a multi-layered stacked layout with multiple independent chambers. Each chamber houses a formation unit, and each formation unit independently charges and discharges batteries on a tray. While this structure allows for the simultaneous processing of multiple batches of batteries, each formation unit and its corresponding chamber require a fixed space, resulting in a loose overall structure of the formation equipment. This leads to low space utilization in limited production areas and increases the difficulty and cost of plant layout.

[0058] Based on this, this application proposes a battery formation apparatus, including a frame and multiple formation devices, with a cavity provided inside the frame; the formation devices are disposed inside the cavity, and each formation device includes a first press mechanism, a second press mechanism, and at least two charge / discharge modules. The first press mechanism includes a first fixed frame, a first movable frame, and a second fixed frame, and the second press mechanism includes a third fixed frame and a second movable frame. The first movable frame and the second movable frame are respectively used to support the battery. The first movable frame is movably disposed between the first fixed frame and the second fixed frame along a first direction, and the second movable frame is movably disposed between the second fixed frame and the third fixed frame along the first direction. At least two charge / discharge modules are respectively disposed in the second fixed frame and the third fixed frame.

[0059] In the battery formation equipment provided in this application embodiment, the first press mechanism and the second press mechanism in the formation device can share the second fixed frame, saving one fixed frame and reducing the space occupied by the two press mechanisms in the first direction. Furthermore, the formation device is housed in one cavity. Since a single formation device integrates the first press mechanism and the second press mechanism, the formation device in one cavity can perform formation processing on batteries in two trays. Compared with the method of accommodating two press mechanisms in two separate cavities, the battery formation equipment provided in this application embodiment saves the total space occupied by the press mechanism and its cavity, improves the integration and compactness of the formation equipment, helps to reduce the size of the formation equipment, significantly improves the space utilization of the formation equipment, and can adapt to the intensive and efficient layout requirements of battery production workshops.

[0060] The battery formation equipment disclosed in this application can be used to form and / or assess the capacity of batteries.

[0061] Some embodiments of this application provide a battery formation apparatus; please refer to... Figures 1 to 5The battery formation equipment 1000 provided in some embodiments of this application includes a frame 200 and a formation device 100. A cavity 210 is provided within the frame 200, and the formation device 100 is housed within the cavity 210. The formation device 100 includes a first press mechanism 10, a second press mechanism 20, and at least two charge / discharge modules 30. The first press mechanism 10 includes a first fixed frame 11, a second fixed frame 12, and a first movable frame 13. The first fixed frame 11 and the second fixed frame 12 are fixed to the frame 200 and spaced apart along a first direction. The first movable frame 13... 3 is movably disposed between the first fixed frame 11 and the second fixed frame 12 along the first direction; the second press mechanism 20 includes a third fixed frame 21 and a second movable frame 22. The third fixed frame 21 is fixed to the frame 200 and disposed on the side of the second fixed frame 12 away from the first fixed frame 11. The second movable frame 22 is movably disposed between the second fixed frame and the third fixed frame 21 along the first direction. The first movable frame 13 and the second movable frame 22 are respectively used to support the battery. At least two charging and discharging modules 30 are respectively disposed on the second fixed frame 12 and the third fixed frame 21.

[0062] For ease of explanation, a first direction, a second direction, and a third direction are defined, and these three directions intersect each other. For clarity, as shown by the arrows in the diagram, the direction of arrow Z is considered the first direction, the direction of arrow X is considered the second direction, and the direction of arrow Y is considered the third direction.

[0063] For example, the intersection includes perpendicular intersection, where the first direction Z intersects perpendicularly with the second direction X, the first direction Z intersects perpendicularly with the third direction Y, and the second direction X intersects perpendicularly with the third direction Y.

[0064] The frame 200 is the frame of the battery formation equipment 1000, used to install multiple formation devices 100. The frame 200 has one or more cavities 210, which can be separated by partitions such as partition plates 220 and beams.

[0065] The formation apparatus 100 is used to perform formation processing on the battery. The formation apparatus 100 includes a first press mechanism 10, a second press mechanism 20, and at least two charge-discharge modules 30. The first press mechanism 10 and the second press mechanism 20 are respectively used to press the battery, so that the charge-discharge modules 30 are connected to the battery to charge and discharge the battery and perform formation processing.

[0066] The first press mechanism 10 includes a first fixed frame 11, a second fixed frame 12, and a first movable frame 13. The first fixed frame 11 and the second fixed frame 12 can be frame structures of various shapes. The first fixed frame 11 and the second fixed frame 12 are fixed to the frame 200, providing a stable foundation for the pressing process. Optionally, the first fixed frame 11 and the second fixed frame 12 can be integrally connected or fixedly connected by a connecting structure. The first fixed frame 11 and the second fixed frame 12 form a rigid integral frame that can withstand a large pressing force.

[0067] The first movable frame 13 is used to support the battery and move the battery. Optionally, multiple batteries are housed in the tray 300, and the first movable frame 13 is used to support the tray 300 and the multiple batteries within the tray 300; in some embodiments, the battery refers to a single battery cell.

[0068] The first fixed frame 11 and the second fixed frame 12 are spaced apart along the first direction Z. The first movable frame 13 is disposed between the first fixed frame 11 and the second fixed frame 12 along the first direction Z, and the first movable frame 13 can move along the first direction Z to bring the battery closer to the second fixed frame 12 and into contact with the charging and discharging module 30 disposed on the second fixed frame 12. The first fixed frame 11 and the second fixed frame 12 are fixedly connected and can withstand greater pressure during the pressing process of the battery, so that the battery is not easily damaged due to unstable contact pressure.

[0069] For example, the first direction Z can be a vertical direction. In other embodiments, the first direction Z can also be a horizontal direction.

[0070] The second press mechanism 20 includes a third fixed frame 21 and a second movable frame 22. The third fixed frame 21 is fixed to the frame 200 and provides a stable foundation for the pressing process of the second press mechanism 20. The second movable frame 22 is used to support the battery. The second movable frame 22 is located between the third fixed frame 21 and the second fixed frame 12 along the first direction Z, and the second movable frame 22 can move along the first direction Z to bring the battery closer to the third fixed frame 21 and into contact with the charging and discharging module 30 located on the third fixed frame 21.

[0071] It can be understood that the first fixed frame 11, the first movable frame 13, the second fixed frame 12, the second movable frame 22, and the third fixed frame 21 are set sequentially along the first direction Z. For example, the first direction Z is the vertical direction, and the first fixed frame 11, the first movable frame 13, the second fixed frame 12, the second movable frame 22, and the third fixed frame 21 are set sequentially from bottom to top.

[0072] like Figure 2As shown, the chemical forming apparatus 100 includes a first press mechanism 10 and a second press mechanism 20, thereby providing a dual storage space for accommodating two pallets 300. In other embodiments, the press mechanisms in the chemical forming apparatus 100 are not limited to two, but may include three, four, or more to create more storage spaces. For example, the chemical forming apparatus 100 further includes a third press mechanism, which includes a fourth fixed frame and a third movable frame. The fourth fixed frame is connected to the side of the third fixed frame 21 opposite to the second fixed frame 12, and the third movable frame is movably disposed between the third fixed frame 21 and the fourth fixed frame. Thus, the second press mechanism 20 and the third press mechanism share the third fixed frame 21, saving one fixed frame and space compared to two separate press mechanisms. The chemical formation apparatus 100 provided in this application embodiment can easily expand the number of press mechanisms in the first direction Z, and can be arranged according to actual production capacity requirements. Through the design of multiple storage locations, it can adapt to higher frequency pallet 300 turnover scenarios, improve the equipment's support capability for continuous production, and reduce the risk of process stagnation caused by single storage location occupation.

[0073] The working principle of the battery formation equipment 1000 provided in this application embodiment is as follows: the first movable frame 13 and the second movable frame 22 respectively support the battery. The first movable frame 13 can move along the first direction Z toward the second fixed frame 12, so that the first movable frame 13 and the second fixed frame 12 jointly press the battery together. The charging and discharging module 30 on the second fixed frame 12 contacts the battery and performs charging, discharging and formation processing on the battery. The second movable frame 22 can move along the first direction Z toward the third fixed frame 21. The third fixed frame 21 and the second movable frame 22 jointly press the battery together. The charging and discharging module 30 on the third fixed frame 21 contacts the battery and performs charging, discharging and formation processing on the battery.

[0074] In some traditional formation equipment, only one press mechanism is set in each cavity 210, which can only form batteries in one tray 300. The press mechanism includes an upper fixed frame, a lower fixed frame and a movable frame set between the upper fixed frame and the lower fixed frame. Each press mechanism and its cavity 210 need to be set with a certain space, which makes the structure of the formation equipment relatively loose, with low integration and large volume.

[0075] In the battery formation equipment 1000 provided in this application embodiment, the first press mechanism 10 and the second press mechanism 20 in the formation device 100 can share the second fixed frame 12, saving one fixed frame and reducing the space occupied by the two press mechanisms in the first direction Z; furthermore, a single formation device 100 in a cavity 210 integrates the first press mechanism 10 and the second press mechanism 20, enabling the formation device 100 in a cavity 210 to perform formation processing on two layers of batteries. Compared with the method of accommodating two press mechanisms in two cavities 210 respectively, the battery formation equipment 1000 provided in this application embodiment saves the total space occupied by the press mechanism and its cavity 210, improves the integration and compactness of the battery formation equipment 1000, helps to reduce the volume of the battery formation equipment 1000, significantly improves the space utilization of the formation equipment, and can adapt to the intensive and efficient layout requirements of battery production workshops.

[0076] In some embodiments, the first press mechanism 10 further includes a first connecting rod 14, which is fixedly connected between the first fixed frame 11 and the second fixed frame 12. The first movable frame 13 is connected to a first linear bearing 15, and the first connecting rod passes through the first linear bearing 15. The second press mechanism 20 further includes a second connecting rod 23, which is fixedly connected between the second fixed frame 12 and the third fixed frame 21. The second movable frame 22 is connected to a second linear bearing 24, and the second connecting rod 23 passes through the second linear bearing 24.

[0077] There are multiple first connecting rods 14. For example, there are four first connecting rods 14, which are respectively located at the four corners of the first fixed frame 11. The first connecting rods 14 extend along the first direction Z, which can fix the first fixed frame 11 and the second fixed frame 12, and guide the movement of the first movable frame 13, thereby improving the movement accuracy of the first movable frame 13.

[0078] There are multiple second connecting rods 23. For example, there are four second connecting rods 23, and the four first connecting rods 14 are respectively located at the four corners of the first fixed frame 11. The second connecting rods 23 extend along the first direction Z, which can fix the second fixed frame 12 and the third fixed frame 21, and can guide the movement of the second movable frame 22, thereby improving the movement accuracy of the second movable frame 22.

[0079] Linear bearings are a type of linear motion system used in conjunction with linear optical shafts (or guide shafts) to achieve precise linear reciprocating motion with unlimited stroke. Their core function is to support and guide the load and convert sliding friction into rolling friction, thereby ensuring high precision, high speed, and smoothness of moving parts.

[0080] By adopting the above technical solution, the first connecting rod 14 can fix the first fixed frame 11 and the second fixed frame 12 together, so that the first fixed frame 11 and the second fixed frame 12 form a rigidly connected overall frame, which improves the stability of the pressing process; the first connecting rod 14 can also guide the movement of the first movable frame 13, improve the movement accuracy of the first movable frame 13, and thus improve the alignment accuracy of the battery and the charging and discharging module 30; the second connecting rod 23 can also play the role of rigid connection and movement guidance.

[0081] In some embodiments, both the first movable frame 13 and the second movable frame 22 include a tray positioning member 131, which is used to connect to a tray 300 containing batteries.

[0082] Multiple pallet positioning elements 131 may be provided on the first movable frame 13 and the second movable frame 22 respectively to improve the alignment accuracy between the pallet 300 and the movable frame. For example, two pallet positioning elements 131 are arranged diagonally on the first movable frame 13 and two pallet positioning elements 131 are arranged diagonally on the second movable frame 22 to simultaneously limit the accuracy of the second direction X and the third direction Y.

[0083] For example, the pallet positioning element 131 can be a positioning pin, and the pallet 300 has a positioning hole. When the pallet 300 is placed on the movable frame, the positioning pin and the positioning hole are engaged. In other embodiments, the pallet positioning element 131 can also be other structures that can be positioned and connected to the pallet 300, such as positioning holes, positioning buckles, etc.

[0084] By setting tray positioning components 131 on the first movable frame 13 and the second movable frame 22, the first movable frame 13 and the second movable frame 22 can have high alignment accuracy with the tray 300, so that the charging and discharging module 30 can be accurately connected to the battery, improving the reliability of the formation process.

[0085] In some embodiments, the first fixed frame 11 and the second fixed frame 12 are respectively provided with support limiting structures 50. The support limiting structure 50 on the first fixed frame 11 is used to support the tray 300 on the side of the first movable frame 13 near the second fixed frame 12, and the support limiting structure 50 on the second fixed frame 12 is used to support the tray 300 on the side of the second movable frame 22 near the third fixed frame 21.

[0086] Please refer to Figure 2 In the first state, the support limiting structure 50 on the first fixed frame 11 supports the tray 300 above the first movable frame 13, and the support limiting structure 50 on the second fixed frame 12 supports the tray 300 above the second movable frame 22. The first movable frame 13 and the second movable frame 22 are not in contact with the tray 300. Please refer to... Figure 4In the second state, the first movable frame 13 moves toward the second fixed frame 12 along the first direction Z and presses the battery on the tray 300 together with the second fixed frame 12. During the movement, the first movable frame 13 and the second movable frame 22 respectively remove the tray 300 on the support limiting structure 50 and use the tray positioning member 131 to position the tray 300.

[0087] By providing support and limiting structures 50 on the first fixed frame 11 and the second fixed frame 12 respectively, the support and limiting structures 50 can provide support and initial limiting for the pallet 300 transported to the formation device 100, thereby allowing the first movable frame 13 and the second movable frame 22 to take away the pallet 300 and move the pallet 300 during the movement. This improves the stability of the movement of the pallet 300 and helps to improve the alignment accuracy between the pallet 300 and the movable frame.

[0088] In some embodiments, the support limiting structure 50 includes at least two support columns 51 arranged opposite each other along the second direction X. The ends of the support columns 51 are provided with limiting portions 511, which are used to limit the tray 300 at least along the second direction X. The first movable frame 13 and the second movable frame 22 are each fixed with a first guide member 52 and a second guide member 53 arranged opposite each other along the third direction Y, which are used to limit the tray 300 along the third direction Y. The second direction X intersects the third direction Y and is perpendicular to the first direction Z.

[0089] like Figure 2 and Figure 3 As shown, the support and limiting structure 50 includes at least two support columns 51 arranged opposite each other along the second direction X. Optionally, each support and limiting structure 50 includes four support columns 51, respectively located at the four corners of the first fixing frame 11 or the second fixing frame 12. The ends of the support columns 51 are provided with limiting portions 511, which are used to limit the tray 300 at least along the second direction X. For example, the limiting portion 511 has an L-shaped support surface 5111. The two support columns 51 arranged opposite each other along the second direction X jointly use the support surface 5111 to support the opposite ends of the tray 300 along the second direction X, thereby limiting the tray 300 along the second direction X. In some embodiments, the limiting portion 511 can also simultaneously limit the tray 300 along the second direction X and a third direction Y.

[0090] The first movable frame 13 and the second movable frame 22 are respectively provided with a first guide member 52 and a second guide member 53. The first guide member 52 and the second guide member 53 move together with the movable frame and are used to limit the pallet 300 along the third direction Y during the movement of the pallet 300. Optionally, the first movable frame 13 and / or the second movable frame 22 are provided with two first guide members 52 and two second guide members 53, with the two first guide members 52 located on one side of the third direction Y and the two second guide members 53 located on the other side of the third direction Y.

[0091] Optionally, the second direction X is perpendicular to the third direction Y. For example, one of the second direction X and the third direction Y is the length direction of the pallet 300, and the other is the width direction of the pallet 300.

[0092] In the initial state, the tray feeding device places the tray 300 onto the support and limiting structure 50, which can limit the tray 300 along the second direction X. Then, the first movable frame 13 and the second movable frame 22 move along the first direction Z and remove the tray 300. During this movement, the first guide member 52 and the second guide member 53 finely adjust the position of the tray 300 along the third direction Y. The tray positioning member 131 on the first movable frame 13 and the second movable frame 22 can be precisely aligned with the tray 300 to achieve positioning. The first movable frame 13 and the second movable frame 22 continue to move until they are pressed together. It can be understood that the height of the first guide member 52 and the second guide member 53 is higher than the height of the tray positioning member 131.

[0093] The support and limiting structure 50 provided in this application embodiment can limit the pallet 300 at least along the second direction X. Furthermore, during the movement of the pallet 300, the first guide 52 and the second guide 53 limit the position of the pallet 300 along the third direction Y, thereby improving the alignment accuracy of the pallet 300 with the first movable frame 13 and the second movable frame 22 and improving the reliability of the formation process.

[0094] like Figure 4 As shown, in some embodiments, the first guide member 52 has a first guide slope 521, which is inclined relative to the first direction Z and the third direction Y; the second guide member 53 has a second guide slope 531, which is inclined relative to the first direction Z and the third direction Y.

[0095] The first guide slope 521 and the second guide slope 531 are both set towards the tray 300. The first guide slope 521 and the second guide slope 531 can play a guiding role, so that the tray 300 can move and adjust its position along the first guide slope 521 and the second guide slope 531, and the problem of the tray 300 getting stuck is not easy to occur.

[0096] Optionally, the first guide member 52 and the second guide member 53 are L-shaped sheet metal brackets, and a non-metallic gasket is provided above the sheet metal bracket. The first guide slope 521 and the second guide slope 531 are the surfaces of the non-metallic gasket.

[0097] In some embodiments, the limiting part 511 includes a supporting surface 5111 and a limiting surface 5112 connected to each other. The supporting surface 5111 is perpendicular to the first direction Z, and the limiting surface 5112 is perpendicular to the second direction X. The first movable frame 13 has an initial position near the first fixed frame 11 and a pressing position near the second fixed frame 12. The second movable frame 22 has an initial position near the second fixed frame 12 and a pressing position near the third fixed frame 21. In the initial position, along the first direction Z, the highest point of the first guide slope 521 is not higher than the supporting surface 5111, and the supporting surface 5111 is not higher than the highest point of the second guide slope 531.

[0098] The cavity 210 has a tray inlet on one side along the third direction Y, and the first guide 52 is located at the tray inlet.

[0099] For ease of description, the side of cavity 210 with the tray inlet is designated as the front side, and the side of cavity 210 opposite to the tray inlet is designated as the rear side. The third direction Y represents the front-rear direction of cavity 210. Therefore, the first guide member 52 can be called the front guide member, and the second guide member 53 can be called the rear guide member. In the initial state, the tray 300 is fed into the formation apparatus 100, the first movable frame 13 is positioned close to the first fixed frame 11, and the support column 51 supports the tray 300.

[0100] The limiting part 511 includes a vertically connected support surface 5111 and a limiting surface 5112. The support surface 5111 and the limiting surface 5112 are generally L-shaped. The support surface 5111 is used to support the tray 300, and the limiting surface 5112 is used to limit the tray 300 along the second direction X.

[0101] like Figure 4 As shown, the support column 51 is fixed on the first fixed frame 11, and the height of the support surface 5111 on the first fixed frame 11 is H1; in the initial state, the first movable frame 13 is located in the initial position, the highest point of the first guide slope 521 is at the height of the first fixed frame 11, and the highest point of the second guide slope 531 is at the height of the first fixed frame 11, then: H2≤H1, H1≤H3.

[0102] The tray feeding device feeds the tray 300 into the formation device 100 from the tray inlet. At this time, the first guide member 52 will not obstruct the tray 300. Then, the tray feeding device places the tray 300 on the support column 51. The support surface 5111 supports the tray 300, and the limiting surface 5112 positions the tray 300 along the second direction X. The first movable frame 13 moves closer to the second fixed frame 12 along the first direction Z. The first movable frame 13 takes the tray 300 away from the support surface 5111. During the movement of the tray 300 driven by the first movable frame 13, the first guide slope 521 and the second guide slope 531 limit the tray 300 along the third direction Y, eliminating the initial positional deviation of the tray 300.

[0103] By adopting the above technical solution, multiple support columns 51 position the pallet 300 in the second direction X, and the first guide slope 521 and the second guide slope 531 limit the moving pallet 300 along the third direction Y, so that the pallet 300 can be precisely aligned with the first movable frame 13 and the second movable frame 22 simultaneously along the second direction X and the third direction Y, thereby improving the positioning accuracy of the pallet 300.

[0104] In some embodiments, the formation apparatus 100 further includes a first driving member 41 and a second driving member 42. The first driving member 41 is connected to the first movable frame 13 and is used to drive the first movable frame 13 to move along the first direction Z. The second driving member 42 is connected to the second movable frame 22 and is used to drive the second movable frame 22 to move along the first direction Z.

[0105] The first driving element 41 and the second driving element 42 are devices capable of driving linear motion. For example, the first driving element 41 and the second driving element 42 can be cylinders; it is understood that the first driving element 41 and the second driving element 42 can also be hydraulic cylinders, ball screw structures, etc.

[0106] For example, the first driving component 41 is mounted on the second fixed frame 12, the second driving component 42 is mounted on the third fixed frame 21, the driving end of the first driving component 41 is connected to the first movable frame 13 to drive the first movable frame 13 to move along the first direction Z, and the driving end of the second driving component 42 is connected to the second movable frame 22 to drive the second movable frame 22 to move along the first direction Z.

[0107] The formation apparatus 100 of this application embodiment includes a first driving member 41 and a second driving member 42 respectively. The first driving member 41 and the second driving member 42 can be driven independently, which is conducive to achieving efficient continuous operation. At the same time, the tray 300 and the battery are relatively heavy. By providing driving members for the first movable frame 13 and the second movable frame 22 respectively, sufficient driving force can be provided for the first movable frame 13 and the second movable frame 22, thereby improving the stability of movement.

[0108] In other embodiments, the formation device 100 may also drive the first movable frame 13 and the second movable frame 22 simultaneously via a drive mechanism.

[0109] In some embodiments, the first movable frame 13 and the second movable frame 22 are respectively provided with pressing limit rods 132. The pressing limit rods 132 on the first movable frame 13 are used to abut against the second fixed frame 12, and the pressing limit rods 132 on the second movable frame 22 are used to abut against the third fixed frame 21.

[0110] The pressing limit rod 132 can extend along the first direction Z. The pressing limit rod 132 is fixed on the first movable frame 13 or the second movable frame 22 and can move with the movable frame until the height limiting rod abuts against the fixed frame and the movable frame no longer moves. In this way, the height limiting rod limits the process of the first movable frame 13 and the second movable frame 22 moving along the first direction Z, thereby improving the movement accuracy of the first movable frame 13 and the second movable frame 22 along the first direction Z.

[0111] The first driving member 41 and the second driving member 42 can initially control the movement stroke. On this basis, the pressing limit rod 132 further refines the movement formation of the first movable frame 13 and the second movable frame 22, improving the movement accuracy of the first movable frame 13 and the second movable rod along the first direction Z, and reducing the risk of the press mechanism over-pressing the battery and damaging it.

[0112] In some embodiments, the pressing and limiting rod 132 includes a main rod 1321 extending along a first direction Z, a buffer block 1322 connected to the end of the main rod 1321, and a screw 1323 connected between the main rod 1321 and the buffer block 1322. The screw 1323 can adjust the distance between the buffer block 1322 and the main rod 1321.

[0113] The buffer block 1322 is a structure that provides a cushioning effect and can be made of materials such as rubber or sponge. In this way, the buffer block 1322 of the pressing and limiting rod 132 can provide a cushioning effect and is not easily damaged by mechanical structure; the screw 1323 can rotate to adjust the height of the buffer block 1322 on the main rod 1321 along the first direction Z to adapt to batteries of different heights.

[0114] In some embodiments, the charge / discharge module 30 includes a positive charging probe 31, a negative charging probe 32, and a negative pressure module 33. The positive charging probe 31 and the negative charging probe 32 are used to charge the battery, and the negative pressure module 33 is used to extract gas from the battery.

[0115] The battery can be a single battery cell, which has a positive terminal, a negative terminal, and a vacuum port (e.g., an electrolyte filling port). A positive charging probe 31 is electrically connected to the positive terminal, and a negative charging probe 32 is electrically connected to the negative terminal. A negative pressure module 33 is connected to the vacuum port to remove air from the battery. Optionally, the positive charging probe 31, the negative pressure module 33, and the negative charging probe 32 are arranged sequentially to suit the battery structure.

[0116] It is understandable that the tray 300 contains multiple batteries, and the charging and discharging module 30 includes multiple sets of electrode charging probes, negative electrode charging probes 32, and negative voltage module 33, which correspond one-to-one with the multiple batteries to improve the formation efficiency.

[0117] Optionally, the charging / discharging module 30 is suspended from the second fixed frame 12 and the third fixed frame 21, facing the first movable frame 13 and the second movable frame 22 respectively.

[0118] Thus, the charging and discharging module 30 charges the battery through the positive charging probe 31 and the negative charging probe 32, and the negative pressure module 33 is used to extract the air generated during the battery charging process for formation operation.

[0119] In other embodiments, the negative pressure module 33 may be omitted. For example, if the battery formation equipment 1000 is used for the capacity process, then the negative pressure module 33 is not required.

[0120] In some embodiments, the formation device 100 further includes a fire protection structure 60, which is disposed on the second fixed frame 12 and the third fixed frame 21. The fire protection structure 60 includes a fire pipe 61 and a nozzle 62. The fire pipe 61 is used to transmit the fire protection medium, and the nozzle 62 is used to spray the fire protection medium. And / or, the formation device 100 further includes a plurality of cooling fans 70, which are respectively disposed on the second fixed frame 12 and the third fixed frame 21.

[0121] The fire protection piping 61 may include multiple main fire protection lines and branch fire protection lines. The main fire protection lines are located at the second fixed frame 12 and the third fixed frame 21. The branch fire protection lines on the second fixed frame 12 extend from the main fire protection lines toward the first fixed frame 11, and sprinkler heads 62 are located on the branch fire protection lines. The branch fire protection lines on the third fixed frame 21 extend from the main fire protection lines toward the second fixed frame 12, and sprinkler heads 62 are located on the branch fire protection lines. In the event of battery thermal runaway, the fire protection medium transmitted by the fire protection piping 61 can be sprayed from the sprinkler heads 62 to extinguish the battery fire.

[0122] Optionally, the nozzle 62 is tilted to the first direction Z so that the nozzle 62 is directly facing the battery on the tray 300; alternatively, the nozzle 62 may be oriented perpendicular to the first direction Z.

[0123] Multiple cooling fans 70 are respectively installed in the second fixed frame 12 and the third fixed frame 21. The cooling fans 70 can dissipate heat from the battery and reduce the risk of thermal runaway caused by excessive temperature.

[0124] Multiple sets of charging / discharging modules 30, multiple sets of nozzles 62, and multiple sets of cooling fans 70 can be respectively installed on the second fixed frame 12 and the third fixed frame 21. For example, the second fixed frame 12 and the third fixed frame 21 are each symmetrically provided with two rows of charging / discharging modules 30, two rows of nozzles 62, and two rows of cooling fans 70, so as to correspond one-to-one with the two rows of batteries on the tray 300.

[0125] By adopting the above technical solution, the fire protection structure 60 can perform fire protection treatment on the battery, and the cooling fan 70 can dissipate heat from the battery. In this way, the heat generated by the battery charging during the battery formation process can be dissipated. If the battery experiences thermal runaway, the fire protection structure 60 can extinguish the fire in time, reducing the fire risk of the battery formation equipment 1000 and improving the reliability of the battery formation equipment 1000.

[0126] In some embodiments, the first direction Z is the vertical direction.

[0127] The first direction Z is vertical. In the formation apparatus 100, the first press mechanism 10 and the second press mechanism 20 are stacked along the first direction Z. The formation apparatus 100 integrates two press mechanisms and shares the second fixed frame 12, reducing the vertical height and space occupied by the two press mechanisms. This reduces the overall height and vertical space occupied by the battery formation equipment 1000, lowering its cost and simplifying the factory layout. The battery formation apparatus 100 creates a three-dimensional production layout in the vertical space by combining the multi-layer stacked cavity 210 and the formation apparatus 100, making it particularly suitable for scenarios with limited factory space.

[0128] In some embodiments, the first direction is the vertical direction, and the plurality of cavities 210 are arranged simultaneously along the vertical and horizontal directions. The battery formation equipment 1000 includes a plurality of formation devices 100, and the plurality of formation devices 100 are respectively disposed in the plurality of cavities 210.

[0129] Multiple cavities 210 are arranged simultaneously along the first direction Z and the horizontal direction. For example, there are not only two rows of cavities 210 and two rows of formation devices 100 in the horizontal direction, which is adapted to the side-by-side layout commonly used in production lines.

[0130] By placing multiple cavities 210 in both the vertical and horizontal directions, each cavity 210 can accommodate the formation device 100. Thus, the battery formation equipment 1000 has a high degree of integration, can process multiple sets of battery trays 300 simultaneously, achieves parallel operation, and improves the processing efficiency of the battery formation equipment 1000.

[0131] In some embodiments, the first fixing frame 11 and the second fixing frame 12 are respectively provided with liquid receiving trays 16.

[0132] During the formation process, an initial electrochemical reaction occurs inside the battery (especially a newly filled lithium-ion battery), which may generate gas and be accompanied by a certain internal pressure. Some batteries may have process defects (such as poor sealing, tab puncture, etc.), leading to electrolyte leakage or splashing. The electrolyte tray 16 is used to collect electrolyte falling from the tray 300. Optionally, the vertical projected area of ​​the electrolyte tray 16 is larger than the vertical projected area of ​​the tray 300.

[0133] By setting up the liquid receiving tray 16, the electrolyte flowing out of the battery can be received and contained in time, preventing it from dripping, flowing or spreading directly to other areas inside the equipment, thus improving the reliability and lifespan of the equipment.

[0134] In some embodiments, the battery formation apparatus 1000 further includes a tray feeding device (not shown), which has at least two tray 300 supports spaced apart along a first direction Z, each tray 300 support supporting one layer of tray 300, and the tray feeding device is capable of placing at least two trays 300 in a first movable frame 13 and a second movable frame 22 respectively.

[0135] The pallet feeding device can be a palletizer or other device capable of transferring pallets 300 and batteries. The pallet feeding device has at least two pallet 300 supports, which can be structures such as feeding forks. The at least two pallet 300 supports are arranged along the first direction Z, so that the pallet feeding device can carry at least two layers of pallets 300 at a time and place the two layers of pallets 300 in the first movable frame 13 and the second movable frame 22 respectively.

[0136] By adopting the above technical solution, the tray feeding device can simultaneously place trays 300 and batteries on two press mechanisms within a cavity 210, resulting in high feeding efficiency. Furthermore, the tray feeding device, in conjunction with the improved formation device 100 of this application, improves feeding and formation efficiency, significantly enhancing battery production efficiency.

[0137] Please refer to Figures 1 to 5Some embodiments of this application provide a battery formation apparatus 1000, including a frame 200, within which are provided a plurality of cavities 210 stacked along a first direction Z, where Z is a vertical direction; a plurality of formation devices 100, each of which is housed within a cavity 210; each formation device 100 includes a first press mechanism 10, a second press mechanism 20, and at least two charge / discharge modules 30, wherein the first press mechanism 10 includes a first fixing frame 11 and a second fixing frame 12 fixedly connected, and along the first direction Z... A first movable frame 13 is movably disposed between the first fixed frame 11 and the second fixed frame 12; the second press mechanism 20 includes a third fixed frame 21 and a second movable frame 22, the third fixed frame 21 is fixedly connected to the side of the second fixed frame 12 opposite to the first fixed frame 11, and the second movable frame 22 is movably disposed between the second fixed frame 12 and the third fixed frame 21 along the first direction Z. The first movable frame 13 and the second movable frame 22 are respectively used to support the battery, and at least two charging and discharging modules 30 are respectively disposed on the second fixed frame 12 and the third fixed frame 21. The formation apparatus 100 also includes a first driving member 41 and a second driving member 42, the first driving member 41 is connected to the first movable frame 13 and is used to drive the first movable frame 13 to move along the first direction Z, and the second driving member 42 is connected to the second movable frame 22 and is used to drive the second movable frame 22 to move along the first direction Z.

[0138] In some embodiments, the first fixed frame 11 and the second fixed frame 12 are respectively provided with support limiting structures 50. The support limiting structure 50 includes at least two support columns 51 arranged opposite each other along the second direction X. The end of the support column 51 is provided with a limiting part 511, which is used to limit the tray 300 at least along the second direction X. The first movable frame 13 and the second movable frame 22 are each fixed with a first guide member 52 and a second guide member 53 arranged opposite each other along the third direction Y, which are used to limit the tray 300 along the third direction Y. The second direction X intersects the third direction Y and is perpendicular to the first direction Z.

[0139] In the battery formation equipment 1000 provided in this application embodiment, the formation device 100 includes at least two storage positions, which can save the space occupied by the press mechanism, improve the space utilization rate, make the structure more compact, and occupy less space.

[0140] The battery formation equipment 1000 provided in this application embodiment can be used in the formation process or capacity process of lithium-ion battery production and manufacturing. It can charge a whole tray of batteries. The batteries are placed in a tray 300, and the tray feeding device sends the battery tray 300 into the formation device 100. Each formation device 100 can place one tray 300 in two positions, one above and one below. During the lowering process of the tray 300, the limiting part 511 on the support column 51 can position the tray 300 in the second direction X direction. After the tray feeding device is removed, the first movable frame 13 and the second movable frame 22 lift the tray 300 under the lifting force of the cylinder.

[0141] In some embodiments, the lifting process has three stages: initial positioning, fine positioning, and lifting and pressing, to achieve precise positioning of the tray 300 and probe pressing, providing a stable mechanical reference for subsequent charging and other processes, and ensuring the reliability of the contact between the cell terminal and the probe.

[0142] In the initial positioning stage: the first movable frame 13 and the second movable frame 22 rise along the first direction Z, and the first guide bracket and the second guide bracket perform preliminary positioning of the pallet 300 in the third direction Y, eliminating the initial positional deviation of the pallet 300 and laying the foundation for subsequent fine positioning.

[0143] During the precision positioning stage: the first movable frame 13 and the second movable frame 22 continue to rise, and the positioning pins on their upper surfaces are precisely inserted into the corresponding positioning holes inside the cell tray 300, thereby achieving precise positioning of the tray 300 and ensuring the uniqueness and accuracy of the spatial position of the tray 300.

[0144] During the lifting and pressing stage: the first movable frame 13 and the second movable frame 22 continuously lift the tray 300 upwards until the terminal post of the battery cell in the tray 300 is fully pressed with the positive charging probe 31 and the negative charging probe 32. At the same time, the negative pressure module 33 is pressed with the liquid injection hole of the battery cell to meet the charging process of the subsequent process.

[0145] This application also provides a formation method.

[0146] First, in the first press mechanism, the tray 300 is fed into the formation device 100 and falls on the support column 51 above the first fixed frame 11; the first drive member 41 drives the first movable frame 13 to rise; the upper surface of the first movable frame 13 contacts the lower surface of the tray 300, and then the first movable frame 13 and the tray 300 rise synchronously; the battery in the tray 300 contacts the battery charging and discharging module 30, and the pressing limit rod 132 contacts the lower surface of the second fixed frame 12, thus starting the formation process.

[0147] In addition, in the second press mechanism, the tray 300 is fed into the formation apparatus 100 and rests on the support column 51 above the second fixed frame 12; the second drive member 42 drives the second movable frame 22 to rise; the upper surface of the second movable frame 22 contacts the lower surface of the tray 300, and then the second movable frame 22 and the tray 300 rise synchronously; the battery in the tray 300 contacts the battery charging and discharging module 30, and the pressing limit rod 132 contacts the lower surface of the third fixed frame 21, starting the formation process. The first press mechanism and the second press mechanism can be operated simultaneously or separately.

[0148] After the formation process is completed, in the first press mechanism, the battery in the tray 300 is detached from the charging and discharging module 30, the height limiting rod is detached from the lower surface of the second fixed frame 12, and the first movable frame 13 descends synchronously with the tray 300; the upper surface of the first movable frame 13 is detached from the lower surface of the tray 300; the first driving component 41 drives the first movable frame 13 to descend and return to the initial state; the tray 300 falls on the support column 51.

[0149] In the second press mechanism, the battery in the tray 300 is detached from the charging and discharging module 30, the height limiting rod is detached from the lower surface of the third fixed frame 21, and the second movable frame 22 descends synchronously with the tray 300; the upper surface of the second movable frame 22 is detached from the lower surface of the tray 300; the second driving member 42 drives the second movable frame 22 to descend and return to the initial state; the tray 300 falls on the support column 51.

[0150] The battery formation equipment 1000 provided in this application embodiment has a first press mechanism and a second press mechanism in the formation device 100, forming a dual storage position, which saves the volume and space occupied by the press mechanism and reduces the height of the battery formation equipment 1000; the formation device 100 can position the tray 300, improve the alignment accuracy, and improve the yield and reliability of the formation process.

[0151] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery formation apparatus, characterized in that, include: A frame, wherein a cavity is provided within the frame; A formation device is housed within the cavity; The formation apparatus includes a first press mechanism, a second press mechanism, and at least two charge / discharge modules. The first press mechanism includes a first fixed frame, a second fixed frame, and a first movable frame. The first fixed frame and the second fixed frame are fixed to the frame and spaced apart along a first direction. The first movable frame is movably disposed between the first fixed frame and the second fixed frame along the first direction. The second press mechanism includes a third fixed frame and a second movable frame. The third fixed frame is fixed to the frame and disposed on the side of the second fixed frame opposite to the first fixed frame. The second movable frame is movably disposed between the second fixed frame and the third fixed frame along the first direction. The first movable frame and the second movable frame are respectively used to support the battery. At least two charge / discharge modules are respectively disposed on the second fixed frame and the third fixed frame.

2. The battery formation equipment as described in claim 1, characterized in that, The first press mechanism further includes a first connecting rod extending along the first direction. The first connecting rod is fixedly connected between the first fixed frame and the second fixed frame. The first movable frame is connected to a first linear bearing, and the first connecting rod passes through the first linear bearing. The second press mechanism further includes a second connecting rod extending along the first direction. The second connecting rod is fixedly connected between the second fixed frame and the third fixed frame. The second movable frame is connected to a second linear bearing, and the second connecting rod passes through the second linear bearing.

3. The battery formation equipment as described in claim 1, characterized in that, Both the first movable frame and the second movable frame include a tray positioning element for connecting to a tray containing batteries.

4. The battery formation equipment as described in claim 3, characterized in that, The first fixed frame and the second fixed frame are respectively provided with support limiting structures. The support limiting structure on the first fixed frame is used to support the tray on the side of the first movable frame near the second fixed frame, and the support limiting structure on the second fixed frame is used to support the tray on the side of the second movable frame near the third fixed frame.

5. The battery formation apparatus as described in claim 4, characterized in that, The support and limiting structure includes at least two support columns arranged opposite each other along a second direction, and the ends of the support columns are provided with limiting portions, which are used to limit the tray at least along the second direction; Both the first movable frame and the second movable frame are fixed with a first guide member and a second guide member that are arranged opposite to each other along a third direction, for limiting the tray along the third direction. The second direction intersects with the third direction and is perpendicular to the first direction.

6. The battery formation apparatus as described in claim 5, characterized in that, The first guide member has a first guide slope, which is inclined relative to the first direction and the third direction; The second guide member has a second guide ramp, which is inclined relative to the first direction and the third direction.

7. The battery formation apparatus as described in claim 6, characterized in that, The limiting part includes a supporting surface and a limiting surface connected to each other, the supporting surface being perpendicular to the first direction and the limiting surface being perpendicular to the second direction; The first movable frame has an initial position near the first fixed frame and a pressing position near the second fixed frame, and the second movable frame has an initial position near the second fixed frame and a pressing position near the third fixed frame; In the initial position, along the first direction, the highest point of the first guide slope is not higher than the support surface, and the support surface is not higher than the highest point of the second guide slope.

8. The battery formation apparatus according to any one of claims 1-7, characterized in that, The formation apparatus further includes a first driving member and a second driving member, wherein the first driving member is connected to the first movable frame and is used to drive the first movable frame to move along the first direction, and the second driving member is connected to the second movable frame and is used to drive the second movable frame to move along the first direction.

9. The battery formation apparatus according to any one of claims 1-7, characterized in that, The first movable frame and the second movable frame are respectively provided with pressing limit rods. The pressing limit rod on the first movable frame is used to abut against the second fixed frame, and the pressing limit rod on the second movable frame is used to abut against the third fixed frame.

10. The battery formation apparatus as described in claim 9, characterized in that, The pressing and limiting rod includes a main rod extending along the first direction, a buffer block connected to the end of the main rod, and a screw connecting the main rod and the buffer block. The screw can adjust the distance between the buffer block and the main rod.

11. The battery formation apparatus according to any one of claims 1-7, characterized in that, The charging and discharging module includes a positive charging probe, a negative charging probe, and a negative pressure module. The positive charging probe and the negative charging probe are used to charge the battery, and the negative pressure module is used to extract gas from the battery.

12. The battery formation apparatus according to any one of claims 1-7, characterized in that, The formation device further includes a fire-fighting structure, which is disposed within the second fixed frame and the third fixed frame. The fire-fighting structure includes fire-fighting pipes and sprinklers; the fire-fighting pipes are used to transmit the fire-fighting medium, and the sprinklers are used to spray the fire-fighting medium; and / or... The formation apparatus also includes a plurality of cooling fans, which are respectively disposed in the second fixed frame and the third fixed frame.

13. The battery formation apparatus according to any one of claims 1-7, characterized in that, The first direction is the vertical direction.

14. The battery formation apparatus as described in claim 13, characterized in that, The frame is provided with a plurality of cavities, and the plurality of cavities are arranged simultaneously in the vertical and horizontal directions; the battery formation equipment includes a plurality of formation devices, and the plurality of formation devices are respectively disposed in the plurality of cavities.

15. The battery formation apparatus as described in claim 13, characterized in that, The first fixing frame and the second fixing frame are respectively provided with liquid receiving trays.

16. The battery formation apparatus according to any one of claims 1-7, characterized in that, It also includes a tray feeding device, which has at least two tray supports spaced apart along the first direction, each of the tray supports being used to support one layer of trays, and the tray feeding device is capable of placing at least two of the trays in the first movable frame and the second movable frame respectively.

Images