Battery cell stacking mechanism and battery cell stacking device

Abstract

The utility model provides a battery cell stacking mechanism and a battery cell stacking device. The battery cell stacking mechanism comprises a mounting seat connected with an external mechanical arm, and a clamping mechanism arranged on the mounting seat, the clamping mechanism is used for clamping a battery cell, and a guide structure and a locking structure are arranged between the clamping mechanism and the mounting seat; the clamping mechanism can move relative to the mounting base in the first preset direction under guiding of the guiding structure, and the locking structure is used for locking the moved clamping mechanism to the mounting base. According to the battery cell stacking mechanism, the battery cells can be prevented from being damaged due to rigid contact with the comb teeth, the problem that battery cell stacking gaps are inconsistent is solved, the battery cell stacking quality and efficiency can be improved, meanwhile, the accuracy and stability of battery cell grabbing can be ensured, and therefore the module stacking quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery stacking, in particular to a battery cell stacking mechanism. Meanwhile, the utility model also relates to a battery cell stacking device provided with the battery cell stacking mechanism. Background Art

[0002] With the rapid development of electric vehicles, lithium battery modules, as an important component of new energy vehicles, have attracted more and more attention from companies. The battery gripper stacking process is an important process in the assembly of lithium battery PACK (battery pack). Among them, the design of the battery gripper structure affects the speed and accuracy of battery stacking, and has always been the focus of industry research.

[0003] However, the blade battery stacking method commonly used in the industry is an ordinary gripper plus comb teeth to limit. Specifically, after the gripper grabs the battery, it moves to the top of the stacking station and directly inserts the battery into the slot formed by two comb teeth along the vertical direction. Since the limiting comb teeth may have processing errors, gripper positioning errors and assembly errors, it is easy to cause the battery pole to directly interfere with the side of the comb teeth, causing damage to the battery pole and inconsistent battery stacking gaps, resulting in poor module stacking quality, thereby affecting the module's pole finding, pole cleaning and bus welding processes and other post-processing processes, and cannot meet production design requirements. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery cell stacking mechanism to improve the module stacking quality.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery cell stacking mechanism comprises a mounting seat connected to an external mechanical arm, and a clamping mechanism arranged on the mounting seat;

[0007] The clamping mechanism is used to clamp the battery core, and a guiding structure and a locking structure are provided between the clamping mechanism and the mounting seat;

[0008] The clamping mechanism can move relative to the mounting seat along a first preset direction under the guidance of the guide structure, and the locking structure is used to lock the clamping mechanism on the mounting seat after the movement.

[0009] Furthermore, the locking structure includes a first driving part arranged on the mounting seat, a locking member connected to the first driving part, and a locking groove arranged on the clamping mechanism; the locking member can be inserted into the locking groove or removed from the locking groove under the drive of the first driving part.

[0010] Furthermore, the guide structure includes a guide shaft arranged on the mounting seat, and a guide component arranged on the clamping mechanism; the guide shaft is arranged along the first preset direction, and the guide component is slidably arranged on the guide shaft.

[0011] Furthermore, the guide shaft is arranged on the mounting seat through a mounting block; the guide assembly includes guide blocks arranged on two opposite sides of the mounting block, the guide blocks on each side are slidably arranged on the guide shaft, and an elastic member is arranged between the guide blocks on each side and the mounting block.

[0012] Furthermore, the guide blocks on each side are slidably disposed on the guide shaft via bushings; and / or the elastic member is a spring.

[0013] Furthermore, a second driving part is provided on the mounting seat, a driving end of the second driving part is connected to a substrate, and the second driving part can drive the substrate to move along a second preset direction; the clamping mechanism is provided on the substrate, and the guide structure and the locking structure are both provided between the substrate and the clamping mechanism.

[0014] Furthermore, the base plate is provided with a limit groove arranged along the second preset direction, the second driving part includes a second cylinder, and the cylinder rod of the second cylinder is slidably arranged in the limit groove; and / or, a guide rail assembly is provided between the base plate and the mounting seat to guide the movement of the base plate.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The battery cell stacking mechanism described in the utility model can make the clamping mechanism have a certain floating amount in the first preset direction by guiding the clamping mechanism to move along the first preset direction, thereby realizing flexible stacking of battery cells, so as to avoid damage to the battery cells due to hard contact with the comb teeth, and solve the problem of inconsistent gaps in battery cell stacking, thereby improving the quality and efficiency of battery cell stacking. At the same time, the coordinated setting of the locking structure can avoid deviation or floating in the first preset direction during the stage of grasping the battery cells by the clamping mechanism, thereby ensuring the accuracy and stability of battery cell grasping, thereby helping to improve the quality of module stacking.

[0017] In addition, the locking structure is mainly composed of a first driving part, a locking member and a locking groove. The structure is simple and easy to operate, and the locking reliability is high. By coordinating the guide shaft and the guide assembly, the floating stability of the clamping mechanism in the first preset direction can be improved. The setting of the elastic member allows the floating pressure of each guide block to be adjusted, so that the clamping mechanism can be automatically centered when the battery cells are not stacked, which is beneficial to ensure the reliability of the locking of the locking structure. By setting a bushing, the hard friction between each guide block and the guide shaft can be reduced, and the sliding stability of each guide block can be improved. The elastic member adopts a spring, the product is mature and low-priced, which is conducive to cost-reducing design.

[0018] In addition, the coordination of the second driving part and the base plate facilitates the arrangement and installation of related components such as the clamping mechanism, the guide structure and the locking structure. The coordination of the cylinder rod of the second cylinder and the limit groove facilitates the floating of the clamping mechanism in the second preset direction when stacking the battery cells. The clamping mechanism also has a certain amount of floating in the first preset direction, which can improve the stacking effect. The setting of the guide rail assembly can improve the stability of the base plate moving along the second preset direction.

[0019] Another object of the present invention is to provide a battery cell stacking device, comprising a mechanical arm, and the battery cell stacking mechanism as described above connected to the mechanical arm.

[0020] Furthermore, it also includes a stacking workbench and a limiting mechanism located on one side of the robotic arm; the stacking workbench is used to place the battery cells grasped by the battery cell stacking mechanism; the limiting mechanism includes comb tooth assemblies arranged on two opposite sides of the workbench, and multiple battery cell slots are provided on the comb tooth assemblies on each side.

[0021] Furthermore, the comb tooth assembly on each side includes a mounting base plate arranged along the first preset direction, and a plurality of comb teeth provided on the mounting base plate; the plurality of comb teeth are arranged at intervals along the first preset direction, and the battery cell slot is formed between every two adjacent comb teeth.

[0022] The battery cell stacking device described in the utility model is provided with the above-mentioned battery cell stacking mechanism, which can not only ensure the accuracy and stability of battery cell grabbing, but also avoid damage to the battery cells due to hard contact with the comb teeth when stacking the battery cells, and solve the problem of inconsistent battery cell stacking gaps, thereby achieving a good battery cell stacking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1This is a schematic diagram of the overall structure of the battery cell stacking mechanism according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0027] Figure 4 for Figure 1 A side view of the structure shown in;

[0028] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0029] Figure 6 This is a schematic diagram of the internal structure of the guide shaft and the guide assembly when they are assembled according to an embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the battery cell according to an embodiment of the utility model;

[0031] Figure 8 This is a schematic structural diagram of a battery cell stacking device according to an embodiment of the utility model;

[0032] Fig. 9 for Figure 8 Enlarged view of point D in the middle.

[0033] Description of reference numerals:

[0034] 1. Mounting seat; 11. Seat bottom plate; 12. Seat side plate; 13. Seat top plate; 131. Top mounting hole; 14. Base plate; 140. Limiting groove; 141. Limiting plate; 142. Connecting side plate; 143. Guide shaft; 144. Mounting block; 15. Second cylinder; 151. Cylinder rod; 152. Limiting block; 16. Guide rail;

[0035] 2. Clamping mechanism; 21. Clamping base plate; 22. Clamping claw; 23. Clamping claw cylinder; 24. Guide block; 25. Elastic member; 26. Bushing; 27. Bushing adjustment member;

[0036] 3. Locking structure; 31. First driving part; 311. Slide; 32. Locking member; 33. Locking fitting; 330. Locking groove;

[0037] 4. Stacking workbench; 5. Battery pack tray; 6. Battery cell; 61. Terminal column;

[0038] 7. Comb tooth assembly; 70. Card slot; 71. Mounting base plate; 72. Comb teeth; 721. Guide ramp. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] The utility model Figure 1 Taking the battery cell stacking structure shown in as an example, the directional words such as "up, down, left, right, front and back" used in the embodiment are defined based on the second preset direction (also called the battery cell height direction, the battery cell up and down direction or the battery cell Z direction), the second preset direction (also called the battery cell thickness direction or the battery cell Y direction) and the third preset direction (also called the battery cell length direction or the battery cell X direction).

[0042] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0044] Embodiment 1

[0045] The present embodiment relates to a battery cell stacking mechanism, which can realize flexible stacking of battery cells 6 , avoid damage to battery cells 6 due to hard contact with comb teeth 72 , and avoid problems such as inconsistent stacking gaps of battery cells 6 , thereby improving the stacking quality and efficiency of battery cells 6 .

[0046] In terms of overall structure, Figures 1 to 7 As shown, the battery cell stacking mechanism of this embodiment includes a mounting base 1 connected to an external robot arm, and a clamping mechanism 2 arranged on the mounting base 1.

[0047] Furthermore, the clamping mechanism 2 is used to clamp the battery cell 6, and a guide structure and a locking structure 3 are provided between the clamping mechanism 2 and the mounting seat 1. The clamping mechanism 2 can move relative to the mounting seat 1 along a first preset direction under the guidance of the guide structure, and the locking structure 3 is used to lock the clamping mechanism 2 on the mounting seat 1 after the movement.

[0048] Here, when stacking the battery cells 6, the clamping mechanism 2 of this embodiment can realize movement along the first preset direction based on the setting of the guide structure, so that the battery cells 6 can float to a certain extent in the first preset direction, avoiding damage to the battery cells 6 due to hard contact with the comb teeth 72. At the same time, after the battery cells 6 are placed in place, the clamping mechanism 2 can be locked relative to the mounting base 1 through the locking structure 3, avoiding shaking during the process of grasping the battery cells 6, resulting in clamping failure or unstable grasping.

[0049] Furthermore, it should be mentioned that the robot arm of the present embodiment is used to drive the mounting seat 1 to move, so as to cooperate with the clamping mechanism 2, the guide structure and the locking structure 3 and other components to complete the corresponding battery cell 6 stacking action.

[0050] Furthermore, combined Figure 1 As shown, the mounting seat 1 of this embodiment includes a seat bottom plate 11 and a seat top plate 13 arranged at intervals along a first preset direction, and a seat side plate 12 arranged between the seat bottom plate 11 and the seat top plate 13, the clamping mechanism 2 is arranged on the seat bottom plate 11, the guide structure and the locking structure 3 are arranged between the seat bottom plate 11 and the mounting seat 1, and the seat top plate 13 is also provided with a top mounting hole 131 for connecting to a robotic arm, etc.

[0051] In addition, the number of the clamping mechanisms 2 of this embodiment can be set and adjusted according to the actual stacking efficiency requirements of the battery cells 6, for example, the clamping mechanisms 2 are four or five arranged at intervals along the first preset direction. The clamping mechanism 2 preferably includes a clamping base plate 21, a clamping claw cylinder 23 provided on the clamping base plate 21, and a clamp driven by the clamping claw cylinder 23 for clamping the battery cell 6. In specific implementation, the clamping claw 22 and the clamping claw cylinder 23 are both arranged oppositely, and the two clamping claws 22 preferably clamp the ends of the battery cell 6.

[0052] At the same time, the battery cell stacking mechanism of this embodiment is usually equipped with a stacking workbench 4 to implement the battery cell 6 stacking operation, and if necessary, to ensure the battery cell 6 stacking effect, the battery cell stacking mechanism is also equipped with a limiting mechanism for limiting the stacking position of the battery cell 6 and a centering mechanism for centering the stacked multiple battery cells 6. The battery cell 6 of this embodiment preferably adopts a blade battery cell 6 (especially a long battery cell 6 structure) commonly used by those skilled in the art, and as Figure 7 As shown in FIG. , poles 61 are provided at both ends in the length direction.

[0053] Of course, the specific structures of the stacking workbench 4, the limiting mechanism, the centering mechanism, the clamping mechanism 2, and the robotic arm and other components of this embodiment can all refer to the various structures in the battery cell stacking equipment commonly known to technical personnel in this field, and will not be repeated here.

[0054] Based on the above overall introduction, specifically, in this embodiment, as a preferred implementation form, as Figure 1 and Figure 2 As shown, the locking structure 3 includes a first driving portion 31 disposed on the mounting seat 1, a locking member 32 connected to the first driving portion 31, and a locking groove 330 disposed on the clamping mechanism 2. The locking member 32 can be inserted into the locking groove 330 or removed from the locking groove 330 under the drive of the first driving portion 31.

[0055] It can be understood that the locking structure 3 is mainly composed of the first driving part 31, the locking member 32 and the locking groove 330, and the structure is simple and easy to operate, and the locking reliability is high. In specific implementation, the direction in which the first driving part 31 drives the locking member 32 is preferably the first preset direction, that is, the locking member 32 is inserted into the locking groove 330 along the first preset direction.

[0056] In addition, the locking groove 330 can be preferably set to be a V-shape with the opening facing upward, and the locking member 32 is adapted to be matched with the locking groove 330, that is, the insertion end of the locking member 32 is visually in an inverted V-shape as a whole. In this way, when the first driving part 31 drives the locking member 32 to be inserted into the locking groove 330, even if there is a deviation between the locking member 32 and the locking groove 330, it can be guided by the inclined surface on the insertion end of the locking member 32 or the locking groove 330, thereby facilitating the insertion of the locking member 32 into the locking groove 330 to achieve a better locking effect.

[0057] At the same time, the locking groove 330 of this embodiment is preferably arranged on the locking fitting 33 of the clamping base plate 21, so as to be locked with the locking fitting 32. The first driving part 31 of this embodiment is preferably a first cylinder, and the first cylinder can preferably adopt a slide cylinder well known to those skilled in the art, in which case the locking fitting 32 can be connected to the slide 311 of the slide cylinder.

[0058] Furthermore, in this embodiment, as a preferred implementation form, Figure 4 and Figure 5 As shown, the guide structure includes a guide shaft 143 disposed on the mounting seat 1 and a guide assembly disposed on the clamping mechanism 2. The guide shaft 143 is arranged along a first preset direction, and the guide assembly is slidably disposed on the guide shaft 143.

[0059] The advantage of such a configuration is that, by cooperating with the guide shaft 143 and the guide assembly, the floating stability of the clamping mechanism 2 in the first preset direction can be improved, and the structure is simple, which is conducive to realizing cost-saving design.

[0060] To expand, in this embodiment, as a preferred implementation form, Figure 5 and Figure 6 As shown, the guide shaft 143 is arranged on the mounting seat 1 through the mounting block 144. In addition, the guide assembly includes guide blocks 24 arranged on two opposite sides of the mounting block 144, each side guide block 24 is slidably arranged on the guide shaft 143, and an elastic member 25 is arranged between each side guide block 24 and the mounting block 144.

[0061] Thus, the floating pressure of each guide block 24 can be adjusted, so that the clamping mechanism 2 can be automatically centered when the battery cells 6 are not stacked, which is conducive to ensuring the reliability of the locking of the locking structure 3. Moreover, in the specific structure, the two guide blocks 24 are arranged on two opposite sides of the clamping bottom plate 21 along the first preset direction.

[0062] Secondly, as a preferred implementation form, in this embodiment, each side guide block 24 is slidably disposed on the guide shaft 143 through a bushing 26, so that the hard friction between each guide block 24 and the guide shaft 143 can be reduced and the sliding stability of each guide block 24 can be improved. If necessary, this embodiment can also be provided with a bushing adjustment member 27 between the bushing 26 and the corresponding guide block 24, such as a common bushing pad, to facilitate adjustment of the installation position of the bushing 26, etc.

[0063] At the same time, as a preferred implementation form, the above-mentioned elastic member 25 adopts a spring, especially a wave spring commonly used by technical personnel in this field. In this way, it is not only easy to install and adjust the position and floating pressure of the guide block 24, but also based on the advantages of the mature and low-priced wave spring products, a cost-reducing design can be achieved.

[0064] In addition, in this embodiment, as a preferred implementation form, a second driving part is provided on the mounting base 1, and a driving end of the second driving part is connected to the substrate 14, and the second driving part can drive the substrate 14 to move along a second preset direction.

[0065] Meanwhile, the clamping mechanism 2 is arranged on the base plate 14, and the guide structure and the locking structure 3 are arranged between the base plate 14 and the clamping mechanism 2. Specifically, the number of the base plate 14 and the second driving parts corresponds to the number of the clamping mechanisms 2, and the guide structure and the locking structure 3 are arranged on the base plate 14 and the clamping bottom plate 21 in the clamping mechanism 2. Here, the arrangement and installation of the clamping mechanism 2, the guide structure, the locking structure 3 and other related components are facilitated by the coordinated use of the second driving part and the base plate 14.

[0066] Combination Figure 1 and Figure 3 As shown in , in this embodiment, as a preferred implementation form, a limiting groove 140 arranged along a second preset direction is provided on the substrate 14, and the second driving part includes a second cylinder 15, and a cylinder rod 151 of the second cylinder 15 is slidably disposed in the limiting groove 140.

[0067] Of course, the seat bottom plate 11 of this embodiment is provided with a cylinder rod through hole for the cylinder rod 151 to pass through. It can be understood that the cooperation between the cylinder rod 151 of the second cylinder 15 and the limit groove 140 is conducive to the floating of the clamping mechanism 2 in the second preset direction when the battery cells 6 are stacked. Combined with the fact that the clamping mechanism 2 also has a certain amount of floating in the first preset direction, the stacking effect can be improved.

[0068] At the same time, in this embodiment, and also as a preferred implementation form, a guide rail assembly is provided between the substrate 14 and the mounting seat 1 to guide the movement of the substrate 14, thereby improving the stability of the substrate 14 moving along the second preset direction.

[0069] In specific implementation, the second cylinder 15 of this embodiment can adopt common cylinder products, and its cylinder rod 151 is preferably provided with a limit block 152 that slides in the limit groove 140. At the same time, a limit plate 141 is provided above the base plate 14 of this embodiment and is spaced apart from the base plate 14, as well as a plurality of connecting side plates 142 connected between the limit plate 141 and the base plate 14. The above-mentioned limit groove 140 is formed between each connecting side plate 142, the limit plate 141 and the base plate 14, and if necessary, openings for the limit block 152 to be inserted into the limit groove 140 can be provided on the limit plate 141 and one of the connecting side plates 142, and weight reduction holes can be provided on any connecting side plate 142.

[0070] Secondly, as a further improvement, a sensor can be provided in the above-mentioned limit groove 140, and the limit block 152 is preferably provided with a sensor plate. When the second cylinder 15 drives the cylinder rod 151 to move a preset distance along the second preset direction, the sensor senses the sensor plate. At this time, the second cylinder 15 stops driving. The advantage of such a setting is that the preset distance can be set according to the safe distance between the cylinder rod 151 and the substrate 14, ensuring that the clamping mechanism 2 will not excessively press down after placing the battery cell 6 on the stacking workbench 4 to cause damage to the battery cell 6, thereby having good Z-direction (second preset direction) flexible stacking.

[0071] Moreover, in order to ensure the movement stability of the substrate 14, the above-mentioned guide rail assembly can preferably be set to two arranged on both sides of the mounting seat 1 along the third preset direction, and the guide rail assemblies on both sides include a plurality of guide rails 16 arranged at intervals along the first preset direction, and each guide rail 16 is slidably arranged on the seat side plate 12 on the same side through a guide slider, and the substrate 14 is arranged at the bottom of each guide rail 16 (below the second preset direction).

[0072] Of course, in the specific implementation, the seat bottom plate 11 is also provided with guide rail through holes corresponding to each guide rail 16 to ensure that each guide rail 16 smoothly follows the base plate 14. In addition, the number of guide rails 16 can be set and adjusted according to the actual guiding stability requirements, for example, the number of guide rails 16 in each side guide rail assembly is the same as the number of clamping mechanisms 2 and is set one by one.

[0073] In specific implementation, when the battery cell stacking mechanism of this embodiment grabs the battery cell 6, the second cylinder 15 is in a retracted state and the slide cylinders on both sides are in an extended state, so that the locking piece 32 is inserted into the locking groove 330, so that the clamping mechanism 2 cannot float (swing) in the first preset direction (the thickness direction of the battery cell 6), ensuring that each clamping mechanism 2 can accurately grasp the battery cell 6 when taking materials.

[0074] When the battery cells 6 are stacked, the second cylinder 15 of the battery cell stacking mechanism of this embodiment is extended and the slide cylinders on both sides are retracted. At this time, the locking piece 32 is disengaged from the locking groove 330, so that the clamping mechanism 2 is freed from the constraint of the locking structure 3. With the cooperation of the guide blocks 24, the guide shafts 143, the wave springs and the bushings 26, the clamping mechanism 2 can achieve the effect of floating (swinging) in the first preset direction (the thickness direction of the battery cell 6).

[0075] Therefore, when the battery stacking mechanism stacks the battery cells 6 vertically downward (i.e., downward along the second preset direction), it can avoid the battery cells 6 being damaged by hard contact with the comb teeth 72. After the battery cells 6 are stacked on the stacking workbench 4, with the driving action of the second cylinder 15, the limit block 152 on the cylinder rod 151 and the limit plate 141 will have a relative distance. When the sensor senses the induction sheet on the limit block 152 (the limit block 152 moves a preset distance), the sensor triggers a signal to stop the entire battery stacking mechanism from moving downward (this process can be achieved by a controller commonly used by technicians in this field), protecting the battery cells 6 from being squeezed in the Z direction (i.e., the second preset direction), thereby realizing flexible stacking of the battery cells 6 in the X direction (i.e., the first preset direction) and the Z direction.

[0076] The battery cell stacking mechanism of the present embodiment, by guiding and moving the clamping mechanism 2 along the first preset direction, can make the clamping mechanism 2 have a certain floating amount in the first preset direction, so as to realize flexible stacking of the battery cells 6, so as to avoid the battery cells 6 being damaged by hard contact with the comb teeth 72, and solve the problem of inconsistent stacking gaps of the battery cells 6, thereby improving the stacking quality and efficiency of the battery cells 6. At the same time, the coordinated setting of the locking structure 3 can avoid the displacement of the clamping mechanism 2 during the stage of grasping the battery cells 6 or floating in the first preset direction, thereby ensuring the accuracy and stability of grasping the battery cells 6, thereby helping to improve the module stacking quality.

[0077] Embodiment 2

[0078] This embodiment relates to a battery cell stacking device, such as Figure 8 As shown, it includes a mechanical arm and the cell stacking mechanism in the first embodiment connected to the mechanical arm. Specifically, as a preferred implementation form, the cell stacking device of this embodiment also includes a stacking workbench 4 and a limiting mechanism located on one side of the mechanical arm.

[0079] The stacking workbench 4 is used to place the battery cells 6 grasped by the battery cell stacking mechanism. The limiting mechanism includes comb tooth assemblies 7 arranged on two opposite sides of the workbench, and each side comb tooth assembly 7 is provided with a plurality of battery cell slots 70. Here, the arrangement of the battery cell slots 70 is conducive to ensuring the spacing between adjacent battery cells 6 and the total length of the module.

[0080] And, if Fig. 9 As shown, as a preferred implementation form, each side comb tooth assembly 7 includes a mounting base plate 71 arranged along a first preset direction, and a plurality of comb teeth 72 provided on the mounting base plate 71. At the same time, the plurality of comb teeth 72 are arranged at intervals along the first preset direction, and the battery cell slot 70 is formed between every two adjacent comb teeth 72.

[0081] Of course, it needs to be mentioned again that the relevant structural parts not mentioned in the battery stacking device of this embodiment can refer to the various structures of the common battery stacking equipment in the prior art, such as the above-mentioned centering mechanism for centering the stacked multiple battery cells 6, the stacking workbench 4 is provided with a battery pack tray 5 for stacking battery cells 6, and the top of each comb tooth 72 (along the second preset direction) is provided with a guide slope 721 for guiding the battery cell 6 into the battery card slot 70, etc.

[0082] In specific implementation, the battery cell stacking device of this embodiment first grabs the battery cell 6 through the battery cell stacking mechanism. In specific operation, the second cylinder 15 is in a retracted state, and the slide cylinders on both sides are in an extended state. The locking piece 32 is inserted into the locking groove 330, so that the clamping mechanism 2 cannot float (swing) in the first preset direction (the thickness direction of the battery cell 6), ensuring that each clamping mechanism 2 can accurately grasp the battery cell 6 when taking materials. Secondly, when stacking the battery cell 6, the second cylinder 15 in the battery cell stacking mechanism is extended, and the slide cylinders on both sides are in a retracted state. At this time, the locking piece 32 is disengaged from the locking groove 330, so that the clamping mechanism 2 is freed from the constraint of the locking structure 3. With the cooperation of each guide block 24, guide shaft 143, each wave spring, and each bushing 26, the clamping mechanism 2 can achieve the effect of floating (swinging) in the first preset direction (the thickness direction of the battery cell 6).

[0083] Subsequently, when the battery cell stacking mechanism stacks the battery cells 6 vertically downward (i.e., downward along the second preset direction), the poles 61 of the battery cells 6 are inserted into the battery cell slots 70 on both sides. If the center of the battery cell 6 and the center of the corresponding battery cell slot 70 are not on the same line in the second preset direction, the poles 61 of the battery cell 6 will contact the comb teeth 72 on one side of the corresponding battery cell slot 70. Since the clamping mechanism 2 is in a floating (swinging) state at this time, the poles 61 of the battery cell 6 are corrected back to the correct stacking position by the guiding inclined surfaces 721 on the comb teeth 72 ( That is, in the corresponding battery cell slot 70), when the battery cell 6 is placed in place, due to the drive of the second cylinder 15, the limit block 152 continues to move downward (along the second preset direction) with the cylinder rod 151 and will have a relative distance with the limit plate 141. When the sensor senses the sensor sheet on the limit block 152, the sensor triggers a signal to stop the entire battery cell stacking mechanism from moving downward, protecting the battery cell 6 from being squeezed in the Z direction (that is, the second preset direction), thereby realizing flexible stacking of the battery cell 6 in the X direction (that is, the first preset direction) and the Z direction.

[0084] The advantage of such a configuration is that it can avoid the situation where the pole 61 of the battery cell 6 hits the comb teeth 72 head-on, protects the pole 61 of the battery cell 6 from damage, and protects the battery cell 6 from being squeezed, thereby ensuring the overall stacking quality of the battery pack, thereby also ensuring the quality requirements of the subsequent processes of pole 61 searching, pole 61 cleaning and bus welding processing.

[0085] The cell stacking device of this embodiment, by providing the cell stacking mechanism in the first embodiment, can realize flexible stacking of the cells 6 , reduce the probability of damage to the cells 6 , and have good cell 6 stacking quality.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell stacking mechanism, characterized in that: It comprises a mounting seat (1) connected to an external mechanical arm, and a clamping mechanism (2) arranged on the mounting seat (1); The clamping mechanism (2) is used to clamp the battery core (6), and a guiding structure and a locking structure (3) are provided between the clamping mechanism (2) and the mounting seat (1); The clamping mechanism (2) can move relative to the mounting seat (1) along a first preset direction under the guidance of the guide structure, and the locking structure (3) is used to lock the clamping mechanism (2) on the mounting seat (1) after the movement.

2. The battery cell stacking mechanism according to claim 1, characterized in that: The locking structure (3) comprises a first driving part (31) provided on the mounting seat (1), a locking member (32) connected to the first driving part (31), and a locking groove (330) provided on the clamping mechanism (2); The locking member (32) can be inserted into the locking groove (330) or removed from the locking groove (330) under the driving of the first driving part (31).

3. The battery cell stacking mechanism according to claim 1, characterized in that: The guide structure comprises a guide shaft (143) provided on the mounting seat (1), and a guide component provided on the clamping mechanism (2); The guide shaft (143) is arranged along the first preset direction, and the guide assembly is slidably arranged on the guide shaft (143).

4. The battery cell stacking mechanism according to claim 3, characterized in that: The guide shaft (143) is arranged on the mounting seat (1) via a mounting block (144); The guide assembly comprises guide blocks (24) arranged on two opposite sides of the mounting block (144), the guide blocks (24) on each side are slidably arranged on the guide shaft (143), and an elastic member (25) is arranged between the guide blocks (24) on each side and the mounting block (144).

5. The battery cell stacking mechanism according to claim 4, characterized in that: The guide blocks (24) on each side are slidably disposed on the guide shaft (143) via bushings (26); and / or, The elastic member (25) is a spring.

6. The battery cell stacking mechanism according to any one of claims 1 to 5, characterized in that: The mounting seat (1) is provided with a second driving part, a driving end of the second driving part is connected to a substrate (14), and the second driving part is capable of driving the substrate (14) to move along a second preset direction; The clamping mechanism (2) is arranged on the base plate (14), and the guiding structure and the locking structure (3) are both arranged between the base plate (14) and the clamping mechanism (2).

7. The battery cell stacking mechanism according to claim 6, characterized in that: The base plate (14) is provided with a limiting groove (140) arranged along the second preset direction, the second driving part comprises a second cylinder (15), and the cylinder rod (151) of the second cylinder (15) is slidably arranged in the limiting groove (140); and / or, A guide rail assembly for guiding the movement of the substrate (14) is provided between the substrate (14) and the mounting seat (1).

8. A battery cell stacking device, characterized in that: It comprises a mechanical arm, and a battery cell stacking mechanism according to any one of claims 1 to 7 connected to the mechanical arm.

9. The battery cell stacking device according to claim 8, characterized in that: It also includes a stacking workbench (4) and a limiting mechanism located on one side of the mechanical arm; The stacking workbench (4) is used to place the battery cells (6) grasped by the battery cell stacking mechanism; The limiting mechanism comprises comb tooth assemblies (7) arranged on two opposite sides of the workbench (4), and the comb tooth assemblies (7) on each side are provided with a plurality of battery core slots (70).

10. The battery cell stacking device according to claim 9, characterized in that: The comb tooth assembly (7) on each side comprises a mounting base plate (71) arranged along the first preset direction, and a plurality of comb teeth (72) arranged on the mounting base plate (71); The plurality of comb teeth (72) are arranged at intervals along the first preset direction, and the battery cell slot (70) is formed between every two adjacent comb teeth (72).

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