End pressing mechanism for battery cell stacking

Abstract

The utility model provides an end pressing mechanism for stacking battery cells. The end pressing mechanism comprises a tray and a pressing plate, the supporting strip is arranged on the tray and is used for supporting the battery cell; the fixed end plate is arranged on the tray; the movable end plate is movably arranged on the tray, and the movable end plate can be close to or away from the fixed end plate; the material claw assembly is movably arranged on the tray and used for grabbing the battery cells so as to place the battery cells on the supporting strips, and the material claw assembly can drive the battery cells in the longitudinal direction so that the battery cells can be separated from the supporting strips; wherein the movable end plate and the fixed end plate are both provided with avoiding gaps for avoiding the supporting strips, the supporting strips can extend into the avoiding gaps, and the battery cells on the supporting strips are located between the fixed end plate and the movable end plate. According to the material claw assembly disclosed by the utility model, the friction degree between the battery cell and the supporting strip in the stacking process of the battery cell can be effectively reduced, the damage probability of a battery cell coating film is reduced, and the safety of the battery cell is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a terminal pressure mechanism for battery cell stacking. Background Technology

[0002] The end-pressing mechanism is used to shape the module along its length. During this process, the bottom of the cell inevitably rubs against the support structure, which can easily damage the cell coating and affect the module quality. Therefore, how to reduce the friction between the cell and the support structure during the module shaping process is an urgent problem to be solved. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an end-pressure mechanism for battery cell stacking, which can effectively reduce the friction between the battery cell and the support bar and effectively improve the safety of the battery module.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A battery cell stacking end-pressing mechanism includes: a tray; a support bar disposed on the tray for supporting the battery cells; a fixed end plate disposed on the tray; a movable end plate movably disposed on the tray, the movable end plate being able to move closer to or further away from the fixed end plate; and a claw assembly movably disposed on the tray for gripping the battery cells and placing them on the support bar, the claw assembly being able to drive the battery cells longitudinally to detach them from the support bar; wherein both the movable end plate and the fixed end plate have clearance notches for avoiding the support bar, the support bar being able to extend into the clearance notches, and the battery cells on the support bar being positioned between the fixed end plate and the movable end plate.

[0006] According to a preferred embodiment, the feed claw assembly includes a bracket that is movable along the extension direction of the support bar. The bracket is provided with a gripping part for gripping a battery cell. The gripping part and / or the bracket are movable longitudinally so that the battery cell gripped by the gripping part is disengaged from the support bar.

[0007] According to a preferred embodiment, the claw assembly includes a bracket that is movable along the extension direction of the support bar, and the bracket is provided with a gripping part for gripping the battery cell; the tray is provided with a longitudinal plate that is movable along the extension direction of the support bar, and the bracket is assembled to the longitudinal plate and is movable longitudinally relative to the longitudinal plate.

[0008] According to a preferred embodiment, the tray is provided with a mounting column, the support bar is fixed to the tray by the mounting column, and there is an adjustment space between the support bar and the tray; the bracket extends into the adjustment space, and the gripping part includes two claws symmetrically arranged about the support bar, the two claws being able to move closer to or further away from each other.

[0009] According to a preferred embodiment, there are at least two gripping parts, which are spaced apart along the extension direction of the support bar, and adjacent gripping parts can move closer to or further away from each other.

[0010] According to a preferred embodiment, the gripping part further includes a base plate and two adapter plates corresponding to the two claws. The direction in which the two claws move closer or further apart is defined as a first direction. The base plate is mounted on the bracket, and the adapter plates are slidably connected to the base plate. The adapter plates move relative to the base plate along the first direction. The claws are slidably mounted on the adapter plates and move relative to the adapter plates along a second direction. Two limiting plates are provided on the adapter plates, and the claws are positioned between the two limiting plates. A buffer spring is pressed between the claws and at least one of the limiting plates. The first direction, the second direction, and the longitudinal direction are perpendicular to each other.

[0011] According to a preferred embodiment, the bracket is slidably connected to the longitudinal plate, a transmission screw is rotatably mounted on the longitudinal plate, a drive block is drivenly connected to the transmission screw, and the drive block is fixedly connected to the bracket.

[0012] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0013] The feed claw assembly of this invention can grasp the battery cell and detach it longitudinally from the support bar. Then, it places the battery cell sequentially into appropriate positions along the extension direction of the support bar. During this process, the battery cells are arranged as densely as possible. Subsequently, the movable end plate cooperates with the fixed end plate to shape the battery module along its length. Since the battery cell is detached from the support bar during the placement process along the extension direction of the support bar, friction between the two is avoided. At the same time, the dense arrangement of the battery cells by the feed claw assembly reduces the stroke of the battery cell during the shaping process, which reduces the friction stroke between the battery cell and the support bar. This effectively avoids damage to the battery cell's coating due to friction between the battery cell and the support bar, resulting in high safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the end-pressure mechanism for assembling the battery module provided in an embodiment of the present utility model;

[0016] Figure 2 A first three-dimensional structural schematic diagram of the end-pressing mechanism provided in an embodiment of this utility model;

[0017] Figure 3 This is a second three-dimensional structural schematic diagram of the end-pressing mechanism provided in an embodiment of the present utility model;

[0018] Figure 4 A schematic diagram of the assembly structure of the feed claw assembly provided in this embodiment of the utility model via the longitudinal plate and the linear module;

[0019] Figure 5 A first three-dimensional structural diagram of the feed claw assembly and the longitudinal plate after assembly in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the second three-dimensional structure of the material claw assembly and the longitudinal plate provided in this embodiment of the present invention.

[0021] Icons: 10. Tray; 101. First drive component; 102. Clearance notch; 103. Mounting column; 1031. Adjusting cylinder; 104. Movable end plate; 105. Fixed end plate; 106. Moving square hole; 11. Longitudinal plate; 111. Transmission screw; 112. Drive block; 113. Drive cylinder; 12. Claw assembly; 121. Gripping part; 1211. Adapter plate; 1212. Claw body; 1213. Base plate; 122. Bracket; 123. Limiting plate; 124. Buffer spring; 13. Linear module; 14. Support bar; 2. Battery module; 21. Battery cell; X, First direction; Y, Second direction; Z, Longitudinal. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0024] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] Please refer to Figures 1 to 6 A battery cell stacking end-pressing mechanism includes a tray 10, a support bar 14, a fixed end plate 105, a movable end plate 104, and a claw assembly 12. The support bar 14 is disposed on the tray 10 and is used to support the battery cell 21. The fixed end plate 105 is disposed on the tray 10. The movable end plate 104 is movably disposed on the tray 10 and can move closer to or further away from the fixed end plate 105. The claw assembly 12 is movably disposed on the tray 10 and is used to grasp the battery cell 21 and place it on the support bar 14. The claw assembly 12 can drive the battery cell 21 longitudinally (Z) to disengage the battery cell 21 from the support bar 14. Both the movable end plate 104 and the fixed end plate 105 have clearance notches 102 for avoiding the support bar 14. The support bar 14 can extend into the clearance notches 102, and the battery cell 21 on the support bar 14 is located between the fixed end plate 105 and the movable end plate 104.

[0026] The battery cells 21 used to stack and form the battery module 2 are placed on the support bar 14. Preferably, the support bar 14 is horizontally set. After the battery cells 21 are transferred to the support bar 14 by the robotic arm, the material claw assembly 12 grabs the battery cells 21 and makes them separate from the support bar 14 in the longitudinal direction Z. Then, the battery cells 21 are placed in appropriate positions in the extension direction of the support bar 14. During this process, the battery cells 21 are arranged as densely as possible. Then, the movable end plate 104 cooperates with the fixed end plate 105 to shape the battery module 2 in the length direction. Since the battery cells 21 are separated from the support bar 14 during the placement process in the extension direction of the support bar 14, the friction between the two is avoided. At the same time, the dense arrangement of the battery cells 21 by the material claw assembly 12 reduces the stroke of the battery cells 21 during the shaping process of the battery module 2, that is, reduces the friction stroke between the battery cells 21 and the support bar 14. This can effectively avoid the damage to the battery cell 21's coating due to friction between the battery cells 21 and the support bar 14, and ensures high safety.

[0027] In some embodiments, the claw assembly 12 includes a bracket 122, which is movable along the extension direction of the support bar 14. The bracket 122 is provided with a gripping part 121 for gripping the battery cell 21. The gripping part 121 and / or the bracket 122 are movable along the longitudinal direction Z so that the battery cell 21 gripped by the gripping part 121 is disengaged from the support bar 14.

[0028] In this embodiment, preferably, the bracket 122 can move longitudinally Z so that the battery cell 21 grasped by the gripping part 121 is disengaged from the support bar 14.

[0029] Specifically, a longitudinal plate 11 is provided on the tray 10, which can move along the extension direction of the support bar 14. The bracket 122 is assembled on the longitudinal plate 11 and can move relative to the longitudinal plate 11 in the longitudinal direction Z. In this way, the gripping part 121 can move in the extension direction of the support bar 14 and in the longitudinal direction Z, thereby realizing the sequential placement of the battery cells 21 on the support bar 14.

[0030] Furthermore, the bracket 122 is slidably connected to the longitudinal plate 11 via a slide rail slider assembly. A transmission screw 111 is rotatably mounted on the longitudinal plate 11, and a drive block 112 is drivenly connected to the transmission screw 111. The drive block 112 is fixedly connected to the bracket 122. The transmission screw 111 is driven to rotate by a motor mounted on the longitudinal plate 11, thereby driving the bracket 122 to move longitudinally in the Z direction via the drive block 112.

[0031] The end-pressing mechanism also includes a mounting column 103 disposed on the tray 10, and a support bar 14 fixed to the tray 10 via the mounting column 103. An adjustment space exists between the support bar 14 and the tray 10. A bracket 122 extends into the adjustment space, and the gripping part 121 includes two claws 1212 symmetrically arranged about the support bar 14. The two claws 1212 can move closer to or further away from each other. Figure 2 As shown, the direction in which the two claw bodies 1212 approach or move away from each other is defined as the first direction X; the extension direction of the support bar 14 is defined as the second direction Y, and the first direction X, the second direction Y, and the longitudinal direction Z are perpendicular to each other. Two mounting posts 103 are spaced apart on the tray 10 along the second direction Y, and the end of the support bar 14 is mounted on the adjacent mounting post 103. A movable end plate 104 is positioned near one of the mounting posts 103, and a fixed end plate 105 is positioned near the other mounting post 103. In this embodiment, the movable end plate 104 and the tray 10 are slidably connected via a slide rail slider assembly, and the movable end plate 104 can move relative to the tray 10 along the second direction Y to approach or move away from the fixed end plate 105.

[0032] Furthermore, such as Figure 3 As shown, a first driving member 101 is provided on the tray 10. The first driving member 101 acts on the movable end plate 104 to drive it to move along the second direction Y.

[0033] To avoid interference between the first drive member 101 and the bracket 122 within the adjustment space, the first drive member 101 is positioned on the side of the tray 10 away from the bracket 122. For example... Figure 3 As shown, a movable square hole 106 is provided through the tray 10, and the movable end plate 104 extends through the movable square hole 106 to the side of the tray 10 away from the bracket 122.

[0034] Optionally, the first drive component 101 may include, but is not limited to, a cylinder, a hydraulic cylinder, or an electric actuator.

[0035] In some embodiments, the fixed end plate 105 is connected to the tray 10 via a slide rail slider to facilitate adjustment of the position of the fixed end plate 105 as needed. It should be noted that the movement direction of the fixed end plate 105 is parallel to the movement direction of the movable end plate 104, and in use, the position of the fixed end plate 105 on the tray 10 is fixed. Figure 2 As shown, an adjusting cylinder 1031 is provided on the tray 10, and the telescopic end of the adjusting cylinder 1031 is connected to the fixed end plate 105. The position of the fixed end plate 105 is adjusted by extending or retracting the adjusting cylinder 1031, and the position of the fixed end plate 105 is fixed by the adjusting cylinder 1031.

[0036] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, there are at least two gripping parts 121, which are spaced apart along the extension direction of the support bar 14, i.e., the second direction Y. Adjacent gripping parts 121 can move closer to or further away from each other. In this embodiment, each gripping part 121 is responsible for gripping one battery cell 21 on the support bar 14. The presence of at least two gripping parts 121 improves the placement efficiency of the battery cells 21 on the support bar 14. In this embodiment, the number of gripping parts 121 is preferably two.

[0037] like Figure 2 and Figure 4 As shown, a linear module 13 is provided on the tray 10, and a longitudinal plate 11 is disposed on the linear module 13 and driven by it to move along the extension direction of the support bar 14. In this way, the battery cells 21 constituting the battery module 2 can be arranged sequentially in the extension direction of the support bar 14, that is, in the length direction of the battery module 2; during this process, the distance between two adjacent battery cells 21 grasped in a single grasp can be adjusted by moving the two adjacent gripping parts 121 closer to or further away from each other, which facilitates the rapid shaping of the battery module 2 in the later stage.

[0038] Specifically, in this embodiment, one gripping part 121 is slidably connected to the bracket 122 via a slide rail slider assembly, and the other gripping part 121 is fixedly connected to the bracket 122. A drive cylinder 113 is provided on the bracket 122. The drive cylinder 113 is used to drive the gripping part 121 slidably mounted on the bracket 122 to approach or move away from the gripping part 121 fixedly mounted on the bracket 122 in the second direction Y.

[0039] More specifically, the gripping part 121 includes a base plate 1213. The base plate 1213 of one gripping part 121 is fixedly connected to the bracket 122, and the base plate 1213 of the other gripping part 121 is slidably connected to the bracket 122 through a slide rail slider assembly. In this embodiment, when the base plate 1213 is slidably connected to the bracket 122, the base plate 1213 moves relative to the bracket 122 in the second direction Y, so as to realize that the two adjacent gripping parts 121 are close to or far away in the second direction Y.

[0040] The gripping unit 121 also includes two adapter plates 1211 that correspond one-to-one with the two claw bodies 1212.

[0041] The adapter plate 1211 is slidably connected to the base plate 1213 via a slide rail slider assembly. The adapter plate 1211 moves relative to the base plate 1213 in the first direction X. In this embodiment, a finger cylinder is mounted on the base plate 1213. The finger cylinder drives the two adapter plates 1211 of the gripping part 121 to move the two claws 1212 closer to or further away from each other, thereby enabling the gripping part 121 to grip the battery cell 21. Further, the claw 1212 is slidably mounted on the adapter plate 1211 via the slide rail slider assembly. The claw 1212 moves relative to the adapter plate 1211 in the second direction Y. Two limiting plates 123 are provided on the adapter plate 1211. The claw 1212 is located between the two limiting plates 123. A buffer spring 124 is pressed between the claw 1212 and at least one limiting plate 123. Specifically, when the two gripping parts 121 approach each other, the buffer spring 124 is compressed during the contact process of the two battery cells 21 to achieve buffering and avoid damage caused by hard contact between the two battery cells 21. At the same time, the same effect is achieved when the battery cell 21 on one of the gripping parts 121 contacts the battery cell 21 already arranged on the support bar 14, thereby achieving a dense arrangement of the battery cells 21 before shaping along the length direction of the battery module 2.

[0042] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A terminal pressure mechanism for stacking battery cells, characterized in that, include: tray; A support bar, disposed on the tray, is used to support the battery cell; A fixed end plate is provided on the tray; A movable end plate is movably disposed on the tray, and the movable end plate can move closer to or further away from the fixed end plate; A gripper assembly, movably disposed on the tray, is used to grip the battery cell and place it on the support bar. The gripper assembly is capable of longitudinally driving the battery cell to detach it from the support bar. Both the movable end plate and the fixed end plate are provided with clearance notches to avoid the support bar. The support bar can extend into the clearance notches, and the battery cell on the support bar is located between the fixed end plate and the movable end plate.

2. The terminal pressure mechanism for cell stacking according to claim 1, characterized in that, The feed claw assembly includes a bracket that is movable along the extension direction of the support bar. The bracket is provided with a gripping part for gripping the battery cell. The gripping part and / or the bracket are movable longitudinally so that the battery cell gripped by the gripping part is disengaged from the support bar.

3. The terminal pressure mechanism for cell stacking according to claim 1, characterized in that, The feed claw assembly includes a bracket that can move along the extension direction of the support bar, and the bracket is provided with a gripping part for gripping the battery cell. The tray is provided with a longitudinal plate, which is movable along the extension direction of the support bar, and the bracket is assembled to the longitudinal plate and is movable longitudinally relative to the longitudinal plate.

4. The terminal pressure mechanism for cell stacking according to claim 2 or 3, characterized in that, The tray is provided with mounting columns, and the support strip is fixed to the tray by the mounting columns. There is an adjustment space between the support strip and the tray. The bracket extends into the adjustment space, and the gripping part includes two claws symmetrically arranged about the support bar, which can move closer to or further away from each other.

5. The terminal pressure mechanism for cell stacking according to claim 2 or 3, characterized in that, The gripping parts are at least two and are spaced apart along the extension direction of the support bar, and adjacent gripping parts can move closer to or further away from each other.

6. The terminal pressure mechanism for cell stacking according to claim 4, characterized in that, The gripping part also includes a base plate and two adapter plates that correspond one-to-one with the two claws, and the direction in which the two claws move closer or further away from each other is defined as the first direction; The base plate is mounted on the bracket, the adapter plate is slidably connected to the base plate, and the adapter plate moves relative to the base plate along the first direction; The claw body is slidably mounted on the adapter plate. The claw body moves relative to the adapter plate in a second direction. Two limiting plates are provided on the adapter plate. The claw body is located between the two limiting plates. A buffer spring is pressed between the claw body and at least one of the limiting plates. The first direction, the second direction, and the longitudinal direction are perpendicular to each other.

7. The terminal pressure mechanism for cell stacking according to claim 3, characterized in that, The bracket is slidably connected to the longitudinal plate, and a transmission screw is rotatably mounted on the longitudinal plate. A drive block is connected to the transmission screw, and the drive block is fixedly connected to the bracket.

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