Cell stacking device

Abstract

The embodiment of the present invention relates to the field of soft-pack battery processing, and discloses a battery cell stacking device, including: a stacking tool, the stacking tool includes a substrate, two battery cell pressing assemblies are installed on the surface of the substrate, the battery cell pressing assembly includes a base, a U-shaped mounting plate and a roller, the roller is rotatably installed in the area enclosed by the U-shaped mounting plate, the U-shaped mounting plate is slidably installed on the base, and the length of the roller is adapted to the width of the battery cell. The battery cell stacking device provided by the embodiment of the present invention solves the problem that the tabs on both sides of the soft-pack battery cell cannot be mechanically positioned through the stacking tool; the stacking tool is designed with a clamping and holding mechanism to ensure that the position of the battery cells after stacking can be maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-pack battery processing, and in particular to a battery cell stacking device. Background Art

[0002] Soft-pack batteries are widely used in electric bicycles, electric motorcycles, electric vehicles, solar photovoltaic power generation systems, wind power generation systems, mobile communication base stations, large server backup UPS power supplies, emergency lighting, portable mobile power supplies, mining safety equipment and other fields due to their advantages such as light weight, long cycle life, good safety performance, high energy density, stable discharge, excellent performance, and environmental protection and pollution-free.

[0003] Usually, during the stacking process of assembling soft-pack battery modules, errors will occur in the placement of battery cells, making it difficult to align the four sides of the battery cells and unable to ensure the consistency of the positions of the battery cells. Poor fixation of the battery cells may easily lead to deviations in subsequent processing, resulting in the need for reassembly, which increases production costs. Summary of the invention

[0004] An embodiment of the present invention provides a battery cell stacking device, which is used to solve or partially solve the problem of poor battery cell stacking effect in the prior art.

[0005] An embodiment of the present invention provides a battery cell stacking device, comprising: a stacking tool, the stacking tool comprising a substrate, two battery cell pressing assemblies are installed on the surface of the substrate, the battery cell pressing assemblies include a base, a U-shaped mounting plate and a roller, the roller is rotatably installed in the area enclosed by the U-shaped mounting plate, the U-shaped mounting plate is slidably installed on the base, and the length of the roller is adapted to the width of the battery cell.

[0006] On the basis of the above embodiment, the battery core pressing assembly further includes a linear guide rail, a connecting seat, an elastic member and a vertical plate;

[0007] The vertical plate is vertically mounted on the base, and the linear guide rail is horizontally mounted on the base; one end of the elastic member is connected to the vertical plate, and the other end is connected to the connecting seat; the connecting seat is assembled with the linear guide rail, and the U-shaped mounting plate is connected to the connecting seat.

[0008] On the basis of the above embodiment, a wedge block is installed on the surface of the connecting seat.

[0009] Based on the above embodiment, horizontally arranged rollers are installed at the four top corners of the base plate.

[0010] On the basis of the above embodiment, at least one battery cell limiting seat is installed on the surface of the substrate and between the two battery cell pressing assemblies.

[0011] On the basis of the above embodiment, the battery cell stacking device further includes a lifting and positioning mechanism for adjusting the height of the stacking tool.

[0012] On the basis of the above embodiment, the battery cell stacking device further includes a conveying line for conveying the stacking tool.

[0013] On the basis of the above embodiment, the battery cell stacking device further includes a module pressing mechanism, which includes a pressing plate, a linear drive mechanism and a pressure sensor, and a free end of the linear drive mechanism is connected to the pressing plate through the pressure sensor.

[0014] On the basis of the above-mentioned embodiment, the battery cell stacking device further includes a visual mechanism, and the visual mechanism is used to obtain images at the top corners of the battery cells and / or side panels.

[0015] Based on the above embodiment, the battery cell stacking device further includes at least one feeding robot.

[0016] An embodiment of the present invention provides a battery cell stacking device, which stacks multiple battery cells in sequence and places them on the surface of a substrate. In the initial state, the roller and the U-shaped mounting plate are not located directly above the battery cells. After the battery cells are stacked, the U-shaped mounting plate slides so that the battery cells are located in the area enclosed by the U-shaped mounting plate. At this time, the roller contacts the surface of the topmost battery cells, and the battery cells are pressed by the roller to put the battery cells in a compressed state. The battery cell stacking device provided by the embodiment of the present invention solves the problem that the tabs on both sides of the soft-pack battery cells cannot be mechanically positioned through the stacking tooling. The stacking tooling is designed with a clamping and holding mechanism to ensure that the position of the battery cells after stacking can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the structure of a battery cell stacking device according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] 1. Cabinet; 2. Feeding robot; 3. Stacking tooling; 4. Vision mechanism; 5. Module clamping mechanism. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The soft pack battery module includes several single cells, each of which has a positive electrode and a negative electrode. The tab is a metal conductor that leads the positive electrode and the negative electrode out of the single cell. Several single cells are connected in series and parallel to form a soft pack battery module.

[0023] Figure 1 is a schematic diagram of the structure of a battery cell stacking device according to an embodiment of the present invention. Figure 1 As shown, the battery cell stacking device of the embodiment of the present invention comprises: a stacking tool 3, the stacking tool 3 comprises a substrate, two battery cell pressing assemblies are mounted on the surface of the substrate, the two battery cell pressing assemblies are symmetrically arranged, the first battery cell pressing assembly corresponds to the left end of the battery cell, and the second battery cell pressing assembly corresponds to the right end of the battery cell;

[0024] The battery cell pressing assembly includes a base, a U-shaped mounting plate and a roller. The roller is rotatably mounted in the area enclosed by the U-shaped mounting plate. The U-shaped mounting plate is slidably mounted on the surface of the base. The operating length of the roller is adapted to the width of the battery cell, and the width of the battery cell is adapted to the area enclosed by the U-shaped mounting plate, that is, the battery cell can be placed in the area enclosed by the U-shaped mounting plate, the opening of the U-shaped mounting plate faces the horizontally arranged battery cell, and the end of the battery cell contacts the bottom inner wall of the U-shaped mounting plate. Among them, the base is fixedly mounted on the surface of the substrate, and the height of the base is designed according to the height of the module, which is not specifically limited here. In addition, the base can be set as a liftable structure, and the length direction of the roller is consistent with the width direction of the battery cell.

[0025] In an embodiment of the present invention, multiple battery cells are stacked in sequence and placed on the surface of a substrate. In the initial state, the roller and the U-shaped mounting plate are not located directly above the battery cells. After the battery cells are stacked, the U-shaped mounting plate slides so that the battery cells are located in the area enclosed by the U-shaped mounting plate. At this time, the roller contacts the surface of the topmost battery cell, and the battery cells are pressed by the roller to put the battery cells in a compressed state. The battery cell stacking device provided in an embodiment of the present invention solves the problem that the tabs on both sides of the soft-pack battery cells cannot be mechanically positioned through the stacking tool. The stacking tool is designed with a clamping and holding mechanism to ensure that the position of the battery cells after stacking can remain stable.

[0026] On the basis of the above-mentioned embodiment, the battery core pressing assembly further includes a linear guide rail, a connecting seat, an elastic member and a vertical plate;

[0027] The vertical plate is vertically installed on the base, and the linear guide is horizontally installed on the base, and the length direction of the linear guide is the same as the length direction of the battery cell; one end of the elastic member is connected to the vertical plate, and the other end is connected to the connecting seat; the connecting seat is assembled with the linear guide, the connecting seat moves along the length direction of the linear guide, and the U-shaped mounting plate is connected to the connecting seat.

[0028] It should be noted that, in the initial state, the elastic member is in an extended state, that is, the connecting seat moves in a direction away from the vertical plate.

[0029] The elastic member may be a spring, and a plurality of springs may be arranged between the vertical plate and the connecting seat to ensure the stability of the connection between the two and sufficient elastic driving force.

[0030] On the basis of the above embodiment, a wedge block is installed on the surface of the connecting seat.

[0031] It should be noted that, by contacting the driving member with the inclined surface of the wedge block, a driving force in a horizontal direction is provided to the connecting seat, so that the connecting seat can move toward the vertical plate.

[0032] On the basis of the above embodiment, horizontally arranged rollers are installed at the four corners of the base plate, wherein the axis direction of the rollers is the vertical direction.

[0033] It should be noted that by installing horizontally arranged rollers at the four top corners of the substrate, the position of the substrate can be fine-tuned through the contact between the rollers and the conveyor line body, thereby further improving the stacking quality of the battery cells.

[0034] On the basis of the above embodiment, at least one battery cell limiting seat is installed on the surface of the substrate and between the two battery cell pressing assemblies.

[0035] It should be noted that the number of the battery cell limit seats can be three, and the battery cell limit seats can constrain the battery cell in the width direction, and cooperate with the U-shaped mounting plate to constrain the battery cell in the width direction, so as to achieve accurate positioning of the battery cell.

[0036] On the basis of the above-mentioned embodiment, the battery cell stacking device further includes a lifting and positioning mechanism for adjusting the height of the stacking tooling.

[0037] It should be noted that the lifting and positioning mechanism may be a lifting cylinder, and the height of the stacking tooling may be adjusted in real time through the lifting and positioning mechanism.

[0038] On the basis of the above-mentioned embodiment, the battery cell stacking device further includes a conveying line body for conveying the stacking tool 3 .

[0039] It should be noted that the conveyor line can be a belt conveyor or a stepping conveyor, which is not specifically limited here.

[0040] On the basis of the above embodiment, the battery cell stacking device further includes a module pressing mechanism 5, which includes a pressing plate, a linear drive mechanism and a pressure sensor, and the free end of the linear drive mechanism is connected to the pressing plate through the pressure sensor.

[0041] It should be noted that the linear drive mechanism may be a lifting cylinder, and the height of the pressing plate can be adjusted through the action of the lifting cylinder.

[0042] Among them, by setting up a pressure sensor, the pressure of the pressure plate on the battery cell can be measured in real time to prevent damage to the structure of the battery cell.

[0043] On the basis of the above-mentioned embodiment, the battery cell stacking device further includes a visual mechanism 4, and the visual mechanism 4 is used to obtain images at the top corners of the battery cells and / or the side panels.

[0044] It should be noted that whether the stacking quality of the battery cells meets the requirements can be determined by whether the top corners of two adjacent battery cells are aligned.

[0045] In the embodiment of the present invention, visual positioning is adopted and the clamping electric cylinder is cleverly used to achieve the positioning of the fixed-focus camera for photographing the side panel batteries at different heights.

[0046] On the basis of the above embodiment, the battery cell stacking device further includes at least one feeding robot 2 .

[0047] It should be noted that there are many types of stacking materials, including four types of materials, and they need to be pressed and maintained after stacking. The feeding robot 2 is used for alternate stacking, and the four types of materials are taken and placed at two stacking stations.

[0048] In the embodiment of the present invention, a conveyor line body is installed on the cabinet 1, and the conveyor line body is used to convey the stacking tool 3. Two stacking stations are arranged along the conveying direction of the conveyor line body, and each stacking station is correspondingly installed with a stacking tool 3, a module clamping mechanism 5 and two sets of visual mechanisms 4. The two stacking stations share three feeding manipulators 2, and each stacking tool 3 corresponds to a lifting and positioning mechanism. Among them, the feeding manipulator 2 adopts a suction cup structure, and the three feeding manipulators 2 are stacked alternately, which are used to stack four materials, namely foam, insulation board, left and right side panels and battery cells.

[0049] It should be noted that a series of pre-operations are required before stacking, such as gluing the front and back of the battery cells, gluing the insulation board and the left and right side boards, and gluing the foam. The battery cells, insulation boards, left and right side boards, and foams that do not meet the gluing requirements need to be removed to ensure the quality of battery cell stacking.

[0050] It is understandable that a plurality of secondary positioning devices corresponding to the battery cells, insulating plates, left and right side plates and foam are provided on the cabinet 1 to ensure the accuracy of the grasping of the feeding robot 2 .

[0051] It should be noted that when the visual mechanism 4 detects an error in the stacking of the upper and lower layers of materials, the alarm device will sound an alarm, and the feeding robot 2 can remove the material from the stacking tooling 3 at this time.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery cell stacking device, characterized in that: include: A stacking tool, the stacking tool comprises a base plate, on the surface of which two battery cell pressing assemblies are installed, the battery cell pressing assembly comprises a base, a U-shaped mounting plate and a roller, the roller is rotatably installed in the area enclosed by the U-shaped mounting plate, the U-shaped mounting plate is slidably installed on the base, and the length of the roller is adapted to the width of the battery cell; wherein, the opening of the U-shaped mounting plate faces the horizontally arranged battery cell, the battery cell is placed in the area enclosed by the U-shaped mounting plate, the U-shaped mounting plate constrains the battery cell in the width direction of the battery cell, the end of the battery cell contacts the bottom inner wall of the U-shaped mounting plate, the roller contacts the surface of the uppermost battery cell, and the battery cell is pressed by the roller so that the battery cell is in a pressed state.

2. The battery cell stacking device according to claim 1, characterized in that: The battery core pressing assembly also includes a linear guide rail, a connecting seat, an elastic member and a vertical plate; The vertical plate is vertically mounted on the base, and the linear guide rail is horizontally mounted on the base; one end of the elastic member is connected to the vertical plate, and the other end is connected to the connecting seat; the connecting seat is assembled with the linear guide rail, and the U-shaped mounting plate is connected to the connecting seat.

3. The battery cell stacking device according to claim 2, characterized in that: A wedge block is installed on the surface of the connecting seat.

4. The battery cell stacking device according to claim 1, characterized in that: Horizontally arranged rollers are installed at the four top corners of the base plate.

5. The battery cell stacking device according to claim 1, characterized in that: At least one battery cell limiting seat is installed on the surface of the substrate and between the two battery cell pressing assemblies.

6. The battery cell stacking device according to any one of claims 1 to 5, characterized in that: The battery cell stacking device also includes a lifting and positioning mechanism for adjusting the height of the stacking tool.

7. The battery cell stacking device according to any one of claims 1 to 5, characterized in that: The battery cell stacking device also includes a conveying line body for conveying the stacking tooling.

8. The battery cell stacking device according to any one of claims 1 to 5, characterized in that: The battery cell stacking device further includes a module pressing mechanism, which includes a pressing plate, a linear drive mechanism and a pressure sensor, wherein a free end of the linear drive mechanism is connected to the pressing plate via the pressure sensor.

9. The battery cell stacking device according to any one of claims 1 to 5, characterized in that: The battery cell stacking device further comprises a visual mechanism, which is used to obtain images of the top corners of the battery cells and / or the side plates.

10. The battery cell stacking device according to any one of claims 1 to 5, characterized in that: The battery cell stacking device also includes at least one feeding robot.

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