Positioning device for battery pre-stacking

Abstract

The utility model relates to a positioning device for pre-stacking batteries. The positioning device comprises a mounting carrier plate, a variable pitch assembly and a driving assembly, the at least two groups of variable-pitch assemblies are positioned on the surface of the mounting carrier plate, and a carrying gap for placing a battery monomer is formed between the two groups of variable-pitch assemblies which are oppositely arranged in the first direction; each group of variable-pitch assemblies comprises a plurality of groups of variable-pitch blocks and a limiting part, the variable-pitch blocks are arranged along a second direction, and the second direction is perpendicular to the first direction; a limiting part is arranged on the surface of at least one side of each group of variable-pitch blocks in the first direction, and the free end of each limiting part is arranged towards the carrying gap; a clamping gap is formed between every two adjacent limiting parts in the second direction. The driving assembly is used for driving the variable-pitch block to move in the second direction, and the width of the clamping gap in the second direction changes at equal intervals. According to the battery pre-stacking device, batteries can be centered and positioned, equidistant change is achieved in the stacking process, the pre-stacking effect is good, and the batch processing efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a positioning device for battery pre-stacking. Background Art

[0002] A battery pack is formed by stacking and assembling multiple battery cells. The battery cells need to be aligned and positioned in the center, and the accuracy of their placement will directly affect the stacking effect and the quality of the battery pack product. Currently, the pre-stacking of battery cells is mainly done by a six-axis robot that grabs the battery cells and places them equidistantly. The placement of the battery cells is prone to offset or skew, affecting stacking. At the same time, there are adhesion problems between adjacent batteries. When the gripper at the back station grabs the battery cells, it is very easy to grab them off-center, causing a risk of collision, which affects the stacking efficiency. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the technical difficulties of inaccurate positioning, easy deviation or collision of battery cells during pre-stacking in the prior art, and to provide a positioning device for battery pre-stacking to achieve medium-distance positioning of large-surface battery cells.

[0004] In order to solve the above technical problems, the utility model provides a positioning device for battery pre-stacking, which comprises:

[0005] An installation carrier plate extending in a horizontal direction;

[0006] A variable distance component, the variable distance component is arranged on the top surface of the mounting carrier, the variable distance component is provided in at least two groups, and a supporting gap for placing a battery cell is formed between two groups of the variable distance components arranged opposite to each other in a first direction;

[0007] Each group of the variable distance components comprises a variable distance block and a limiting portion, the variable distance blocks are provided in multiple groups and are arranged along a second direction, the second direction being perpendicular to the first direction; at least one side surface of each group of the variable distance blocks in the first direction is provided with the limiting portion, the limiting portion extends along the first direction, and a free end thereof is provided toward the supporting gap; a clamping gap for clamping the battery cell is formed between two adjacent groups of the limiting portions in the second direction;

[0008] A driving assembly is used to drive the variable distance block to move along the second direction, and the width of the clamping gap in the second direction changes equidistantly.

[0009] In one embodiment of the utility model, it also includes a support portion, which is located on the surface of the mounting plate and arranged along the first direction; the support portion is located at the bottom of the limiting portion and extends along the second direction; the support portions located on both sides of the supporting gap are used to support the two ends of a group of battery cells.

[0010] In one embodiment of the utility model, each group of the variable distance blocks includes a connecting plate and two moving blocks; the connecting plate extends along the first direction, and the two moving blocks are respectively located at both ends of the extension direction of the bottom of the connecting plate; the moving blocks are sleeved on the outside of the light rod and slidably connected thereto.

[0011] In one embodiment of the utility model, a follower cam is provided on the top of the connecting plate of each group of the variable distance blocks, and the follower cam is aligned along the second direction; the driving assembly includes a variable distance plate, and the variable distance plate is penetrated by a variable distance groove, and each follower cam is correspondingly penetrated in a group of the variable distance grooves, and when the follower cam moves along the variable distance grooves, the variable distance blocks are arranged equidistantly in the second direction.

[0012] In one embodiment of the utility model, the pitch-changing slot is arranged as a straight slot; the first end and the second end of each pitch-changing slot in the extension direction are arranged relatively to each other in the first direction; the first ends of each pitch-changing slot are arranged at intervals in the second direction, and the intervals are d1; the second ends of each pitch-changing slot are arranged at intervals in the second direction, and the intervals are d2, d2>d1.

[0013] In one embodiment of the utility model, the driving assembly also includes a slide rail, a slider and a control cylinder; the control cylinder is located at the bottom of the mounting plate, the slide rail is located at both ends of each group of the variable pitch assemblies and extends along the first direction, and the slider is connected to the variable pitch plate and moves along the slide rail.

[0014] In one embodiment of the utility model, the driving assembly further includes a connecting rod and a clamping block; the connecting rod extends along the first direction, and both ends of the connecting rod are respectively fixed to two adjacent groups of the pitch-changing plates through the clamping blocks.

[0015] In one embodiment of the present invention, the limiting portion includes at least two groups of rotating wheels, and the two groups of rotating wheels are arranged in a vertical direction and are configured to rotate around an axis respectively.

[0016] In one embodiment of the present invention, the rotating wheel is made of an anti-sticking material, or an anti-sticking layer is provided on the surface of the rotating wheel.

[0017] In one embodiment of the present invention, the distance-changing blocks in the distance-changing assembly include at least three groups.

[0018] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0019] The positioning device for battery pre-stacking described in the utility model can realize the center positioning of the battery with high alignment accuracy; and can realize equal distance change during the stacking distance change process, so the pre-stacking effect is better and the product yield is higher; the utility model can also pre-stack battery cells in batches, improve processing efficiency and control production costs; at the same time, it can also avoid the deviation caused by battery adhesion, and has a simple structure and good positioning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0021] Figure 1 A top view of a positioning device for battery pre-stacking in a preferred embodiment of the utility model;

[0022] Figure 2 It is a side view of a positioning device for battery pre-stacking in a preferred embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of an axonometric structure of a positioning device for battery pre-stacking in a preferred embodiment of the utility model;

[0024] Figure 4 It is another isometric structural schematic diagram of a positioning device for battery pre-stacking in a preferred embodiment of the utility model;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0026] Figure 6 This is an enlarged schematic diagram of the positioning device after assembling the battery in the preferred embodiment of the utility model;

[0027] Figure 7 It is a schematic structural diagram of the pitch-variable plate in the preferred embodiment of the utility model.

[0028] Description of the Figures in the Specification:

[0029] 1. Install the carrier plate; 11. Support gap; 12. Clamping gap; 2. Pitch change assembly; 21. Pitch change block; 2101. Connecting plate; 2102. Moving block; 2103. Follow-up cam; 22. Limiting part; 2201. Rotating wheel; 23. Light rod; 3. Driving assembly; 31. Slide rail; 32. Sliding block; 33. Control cylinder; 34. Connecting rod; 35. Block; 4. Support part; 5. Pitch change plate; 51. Pitch change slot; 5101. First end; 5102. Second end; 6. Battery cell. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0031] Example

[0032] In the prior art, battery cells are pre-stacked by a multi-axis manipulator; in some embodiments, the battery cell is set as a rectangular parallelepiped structure, which includes a battery housing and a battery top cover; the battery housing includes a bottom plate arranged opposite to the battery top cover, and four side plates for connecting the bottom plate and the battery top cover, and the four side plates are arranged in parallel and opposite to each other, and include a group of large battery faces and a group of small battery faces; in the existing stacking positioning equipment, the precision control of the centering and equidistant positioning of the large battery faces is not good, resulting in an uneven surface of the stacked battery pack, affecting the product yield. In addition, due to the influence of adhesion between battery cells, the gripper may have misalignment, collision or other safety hazards, which is not conducive to batch operation and has low efficiency.

[0033] In view of this, the utility model provides a positioning device for battery pre-stacking, which is used to realize the placement and equal distance variation of battery cells, meet the pre-stacking requirements, and facilitate the processing of the subsequent workstation. The positioning device includes a mounting plate 1, a variable distance component 2, a driving component 3 and a support part 4.

[0034] Specifically, refer to Figure 1 As shown, the mounting plate 1 extends in the horizontal direction, and the variable pitch assembly 2 is arranged on the surface of the mounting plate 1. The variable pitch assembly 2 is provided with at least two groups, wherein a supporting gap 11 for placing the battery cell 6 is formed between two adjacent groups of the variable pitch assembly 2 in the first direction; the support portion 4 is located in the supporting gap 11 for supporting the battery cell 6.

[0035] It should be noted that, in some embodiments, the variable distance components 2 are arranged in sequence along the first direction, and two adjacent groups of the variable distance components 2 in the first direction are used to control the pre-stacking of a batch of battery cells 6; in a preferred embodiment of the utility model, the variable distance components 2 are arranged in an array on the mounting carrier 1 to control the pre-stacking of multiple batches of the battery cells 6, thereby realizing batch processing and improving production efficiency.

[0036] Specifically, refer to Figure 1 , Figure 2 and Figure 4As shown, each group of the variable distance assembly 2 includes a variable distance block 21 and a limiting portion 22. Inside each group of the variable distance assembly 2, the variable distance blocks 21 have multiple groups and are arranged along the second direction, and the second direction is perpendicular to the first direction. In some embodiments, the variable distance blocks 21 in the variable distance assembly 2 have at least three groups, and two clamping gaps 12 are provided to enable the centering of at least two battery cells 6; preferably, the variable distance blocks 21 are arranged in six groups. The limiting portion 22 is provided on at least one side surface of each group of the variable distance blocks 21 in the first direction, and the limiting portion 22 extends along the first direction, and its free end is arranged toward the supporting gap 11; a clamping gap 12 for clamping the battery cell 6 is formed between two adjacent groups of the limiting portions 22 in the second direction.

[0037] Continue, refer to Figure 6 As shown, the width of the supporting gap 11 in the first direction is set to be the distance between the two small battery surfaces of the battery cell 6 in the first direction; the width of the supporting gap 11 remains unchanged when the driving assembly 3 is driven. The width of the clamping gap 12 in the second direction is greater than the distance between the two large battery surfaces of the battery cell 6 in the second direction; the driving assembly 3 is used to drive the variable distance block 21 to move along the second direction to change the width of the clamping gap 12, and the width of the clamping gap 12 in the second direction changes equidistantly to achieve pre-stacking of the battery cells 6.

[0038] Further, refer to Figure 5 As shown, each group of the variable distance blocks 21 includes a connecting plate 2101 and two moving blocks 2102. The connecting plate 2101 extends along the first direction. The two moving blocks 2102 are located at the bottom of the connecting plate 2101 and at both ends of the extending direction of the connecting plate 2101. The moving blocks 2102 are sleeved on the outside of the optical rod 23 and are slidably connected thereto. When the variable distance blocks 21 perform equidistant distance changes in the second direction, the moving blocks 2102 slide along the optical rod 23.

[0039] Further, refer to Figure 2 , Figure 5 and Figure 6 As shown, in a preferred embodiment of the utility model, the limiting part 22 is configured as at least two groups of rotating wheels 2201, and the two groups of rotating wheels 2201 are arranged in the vertical direction and are configured to rotate around the axis respectively. During the pre-stacking process, the limiting part 22 contacts the large surface of the battery cell 6 for limiting. In order to avoid adhesion with the battery cell 6, the rotating wheel 2201 is configured to be made of an anti-adhesive material, or an anti-adhesive layer is provided on the surface of the rotating wheel 2201; preferably, the rotating wheel 2201 is configured to be made of Teflon material, which neither damages the battery surface nor can avoid adhesion.

[0040] Specifically, refer to Figure 2 and Figure 6 As shown, the support parts 4 are located on the surface of the mounting plate 1 and arranged along the first direction, and the support parts 4 are located at the bottom of the limiting part 22 and extend along the second direction. When the battery cell 6 is limited in the clamping gap 12 by the limiting part 22, two adjacent groups of the support parts 4 in the first direction are respectively located at the two ends of the bottom of one group of the battery cells 6 to support it.

[0041] Specifically, the driving assembly 3 includes a pitch-changing plate 5, and the pitch-changing assembly 2 has a follower cam 2103 that cooperates with the pitch-changing plate 5. Figure 4 and Figure 5 As shown, a group of follower cams 2103 are arranged on the top of the connecting plate 2101 of each group of the variable distance blocks 21, and the variable distance plate 5 is penetrated by a variable distance groove 51, and the variable distance groove 51 is arranged one-to-one with the follower cam 2103, and each of the follower cams 2103 is correspondingly penetrated in a group of the variable distance grooves 51, and when the follower cams 2103 move relatively along the variable distance grooves 51, the variable distance blocks 21 change distance equidistantly.

[0042] Continue, refer to Figure 1 , Figure 4 and Figure 7 As shown, the pitch-changing slots 51 are arranged as straight slots, and are arranged as waist-shaped through slots. Each group of the pitch-changing slots 51 includes a first end 5101 and a second end 5102 in the extension direction thereof, and the first end 5101 and the second end 5102 are arranged opposite to each other in the first direction. The first ends 5101 of each group of the pitch-changing slots 51 are arranged equidistantly in the second direction, and the spacing is d1; the second ends 5102 of each group of the pitch-changing slots 51 are arranged equidistantly in the second direction, and the spacing is d2, d2>d1. Figure 7 As shown, since the pitch-changing slot 51 is a linear slot, after the two ends thereof are arranged at equal intervals, the middle part thereof in the extending direction is also arranged at equal intervals, and the pitch-changing slot 51 is arranged in an "eight" shape in the first direction, and the pitch-changing slot 51 is symmetrically arranged in the second direction. In the embodiment of the utility model, the follower cams 2103 are arranged in sequence along the second direction, and the follower cams 2103 of each pitch-changing block 21 are aligned along the second direction, so when the follower cams 2103 slide relatively in the pitch-changing slot 51, the spacings of each follower cam 2103 in the second direction are equal, and then the spacings of each pitch-changing block 21 in the second direction are equal, so that the pitch of the same step size is realized, and the battery cell 6 is controlled to be aligned in the center and the pitch is changed at equal intervals.

[0043] It should be noted that, in some embodiments, the limiting portions 22 are provided on both sides of the distance changing blocks 21 of a group of the distance changing assemblies 2, and the limiting portions 22 on both sides are respectively located in the two groups of the supporting gaps 11, so as to control two batches of the battery cells 6; so that each batch of battery cells 6 can be synchronously stacked with variable distances, the first ends 5101 of the distance changing slots 51 of each group of the distance changing plates 5 are on the same side in the first direction, and the second ends 5102 of the distance changing slots 51 of each group of the distance changing plates 5 are on the other side in the first direction.

[0044] Specifically, refer to Figure 3 and Figure 5 As shown, the driving assembly 3 further includes a slide rail 31, a slider 32 and a control cylinder 33; the control cylinder 33 is located at the bottom of the mounting plate 1 to control the driving, the slide rails 31 are located at both ends of each group of the pitch-changing assemblies 2 and extend along the first direction, and the slider 32 connects the pitch-changing plates 5 and moves along the slide rails 31. The first driving part further includes a connecting rod 34 and a clamping block 35, the connecting rod 34 extends along the first direction, and the two ends of the connecting rod 34 are respectively fixed to two adjacent groups of the pitch-changing plates 5 through the clamping blocks 35, the connecting rod 34 and the clamping block 35 are used to drive each group of the pitch-changing plates 5 to move synchronously, thereby controlling each group of the pitch-changing assemblies 2 to synchronously perform equidistant pitch change, and realizing the pre-stacking of batch battery cells 6.

[0045] The working principle of the positioning device for battery pre-stacking described in the utility model is as follows:

[0046] The cylinder is extended to control the pitch plate 5 to move along the slide rail 31, so that the follower cam 2103 slides relatively along the pitch slot 51 to the second end 5102, at which time the width of the clamping gap 12 is the largest; the robot gripper grabs the battery cell 6 and places it on the support part 4 so that it is located in the clamping gap 12. Figure 1 and Figure 4 As shown, when the variable distance blocks 21 of each variable distance assembly 2 are set to six groups, and the variable distance assembly 2 is set to ten groups arranged in an array, the positioning device of the utility model has a total of eight groups of supporting gaps 11, and each of the supporting gaps 11 has five groups of clamping gaps 12, which respectively limit the small and large surfaces of the battery. The robot gripper grabs five groups of battery cells 6 and repeats the grabbing eight times to achieve batch stacking processing and complete the assembly of the battery cells 6 and the positioning device of the utility model.

[0047] Next, the cylinder retracts, and the pitch-changing plate 5 moves along the first direction, and the pitch-changing slot 51 and the follower cam 2103 slide relative to each other; the relative position of the follower cam 2103 changes from the second end 5102 to the first end 5101, and during the relative sliding, the width of the clamping gap 12 gradually decreases and changes equidistantly, and the rotating wheel 2201 rotates, contacts and pushes the adhesive-carrying battery cell 6 to tighten, and the large surface of the battery cell 6 is centered and equidistantly positioned and clamped; the synchronous movement of each pitch-changing plate 5 is achieved through the connecting rod 34, and batch pre-stacking action is realized.

[0048] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A positioning device for battery pre-stacking, characterized in that: include, An installation carrier plate extending in a horizontal direction; A variable distance component, the variable distance component is arranged on the top surface of the mounting carrier, the variable distance component is provided in at least two groups, and a supporting gap for placing a battery cell is formed between two groups of the variable distance components arranged opposite to each other in a first direction; Each group of the variable distance components comprises a variable distance block and a limiting portion, the variable distance blocks are provided in multiple groups and are arranged along a second direction, the second direction being perpendicular to the first direction; at least one side surface of each group of the variable distance blocks in the first direction is provided with the limiting portion, the limiting portion extends along the first direction, and a free end thereof is provided toward the supporting gap; a clamping gap for clamping the battery cell is formed between two adjacent groups of the limiting portions in the second direction; A driving assembly is used to drive the variable distance block to move along the second direction, and the width of the clamping gap in the second direction changes equidistantly.

2. The positioning device for battery pre-stacking according to claim 1, characterized in that: It also includes a support portion, which is located on the surface of the mounting plate and arranged along the first direction; the support portion is located at the bottom of the limiting portion and extends along the second direction; the support portions located on both sides of the supporting gap are used to support both ends of a group of battery cells.

3. The positioning device for battery pre-stacking according to claim 1, characterized in that: Each set of the variable pitch blocks includes a connecting plate and two moving blocks; the connecting plate extends along the first direction, and the two moving blocks are respectively located at two ends of the extending direction of the bottom of the connecting plate; the moving blocks are sleeved outside the polished rod and slidably connected thereto.

4. The positioning device for battery pre-stacking according to claim 1, characterized in that: A follower cam is provided on the top of the connecting plate of each group of the variable distance blocks, and the follower cam is aligned along the second direction; the driving assembly includes a variable distance plate, and the variable distance plate is penetrated by a variable distance groove, and each follower cam is correspondingly penetrated in a group of the variable distance grooves, and when the follower cam moves along the variable distance grooves, the variable distance blocks are arranged equidistantly in the second direction.

5. The positioning device for battery pre-stacking according to claim 4, characterized in that: The pitch-changing slots are arranged as straight slots; the first end and the second end of each pitch-changing slot in the extension direction are arranged opposite to each other in the first direction; the first ends of each pitch-changing slot are arranged at intervals in the second direction, and the intervals are all d1; the second ends of each pitch-changing slot are arranged at intervals in the second direction, and the intervals are all d2, d2>d1.

6. The positioning device for battery pre-stacking according to claim 4 or 5, characterized in that: The driving assembly also includes a slide rail, a slider and a control cylinder; the control cylinder is located at the bottom of the mounting plate, the slide rail is located at both ends of each set of the pitch-changing assemblies and extends along the first direction, and the slider is connected to the pitch-changing plate and moves along the slide rail.

7. The positioning device for battery pre-stacking according to claim 6, characterized in that: The driving assembly further comprises a connecting rod and a clamping block; the connecting rod extends along the first direction, and two ends of the connecting rod are respectively fixed to two adjacent groups of the pitch-changing plates through the clamping blocks.

8. The positioning device for battery pre-stacking according to claim 1, characterized in that: The limiting portion includes at least two groups of rotating wheels, and the two groups of rotating wheels are arranged in a vertical direction and are configured to rotate around an axis respectively.

9. The positioning device for battery pre-stacking according to claim 8, characterized in that: The rotating wheel is made of an anti-sticking material, or an anti-sticking layer is provided on the surface of the rotating wheel.

10. The positioning device for battery pre-stacking according to claim 1, characterized in that: The distance-changing blocks in the distance-changing assembly include at least three groups.

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