Square battery cell stacking device

Abstract

The invention discloses a square battery cell stacking device which comprises an outer frame assembly, a stacking driving assembly is arranged on the outer frame assembly, the stacking driving assembly comprises a bearing base plate which is horizontally and slidably connected with the outer frame assembly, and at least one stacking execution assembly is arranged on the bearing base plate. The outer frame assembly is provided with at least one stacking rack assembly matched with the stacking execution assembly, the flexible stacking technology is adopted, battery cells large in stacking size difference can be rapidly switched, the stacking efficiency is improved, and the configuration cost of stacking equipment is reduced.

Description

Technical Field

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

[0002] In the manufacturing process of lithium battery modules, the stacking process is a very important process. The existing square battery cells are mostly stacked in groups with their large surfaces fitting together. With the iterative development of battery products, the arrangement of battery cells stacked in groups in battery packs tends to be diversified. In particular, the stacking method with small surfaces of battery cells fitting together is gradually becoming a mainstream battery cell stacking method.

[0003] Due to the large difference in the external dimensions of the large and small surfaces of the battery cells, there are also large differences in the large or small surface bonding and stacking of the battery cells. The original equipment suitable for the bonding and stacking of large surfaces of battery cells cannot be well applied to the products of the bonding and stacking of small surfaces of battery cells. Therefore, in the existing production line, in order to ensure that various production situations can be responded to, that is, whether the battery cells have large surfaces or small surfaces can be produced normally, it is often necessary to equip a large surface stacking production line and a small surface stacking production line at the same time. This arrangement leads to low production line utilization, and the equipment cost and usage cost are very high.

[0004] Therefore, there is an urgent need for a flexible and compatible stacking device that can flexibly and compatibly stack the large and small surfaces of battery cells into groups according to production requirements. Summary of the Invention

[0005] The object of the present invention is to provide a square battery cell stacking device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A square battery cell stacking device includes an outer frame assembly, on which a stacking drive assembly is provided. The stacking drive assembly includes a carrier substrate horizontally slidably connected to the outer frame assembly, on which at least one stacking execution assembly is provided, and on the outer frame assembly, at least one stacking stand assembly cooperating with the stacking execution assembly is provided.

[0008] The batteries are pushed onto the stacking rack assembly by the stacking actuator assembly and stacked.

[0009] As a further solution of the present invention: the stacking execution assembly includes a clamping portion arranged to slide horizontally with the carrier substrate.

[0010] The battery cells to be stacked are clamped by the clamping portion, and the battery cells to be stacked are moved to the stacking rack assembly for stacking.

[0011] As a further solution of the present invention: the stacking execution component includes a lifting base plate, which is connected to the supporting base plate for sliding up and down through a guide linear bearing, and the supporting base plate is provided with a first lifting mechanism for driving the supporting base plate to slide up and down, and the clamping part is connected to the lifting base plate for horizontal sliding through a transverse force mechanism.

[0012] In this embodiment, the first lifting mechanism adopts a lifting cylinder, which drives the lifting substrate to move up and down through the first lifting mechanism so as to lift the battery cells and move them to the position to be stacked. After the stacking is completed, the lifting substrate can be driven down to release the stacked battery cells. The battery cells can be clamped or released by setting a horizontal force mechanism to drive the clamping part.

[0013] As a further solution of the present invention: the clamping part includes a pair of clamping arms, the clamping arms include a clamping bracket and a clamping plate arranged on the upper part of the clamping bracket for clamping the battery cell, and a bottom support plate fixedly connected to the clamping bracket is arranged below the clamping plate.

[0014] The battery cell is supported by the bottom support plate, which makes it easier for the clamping plate to clamp the battery cell, and also avoids the problem of the battery cell falling off during the clamping movement.

[0015] As a further solution of the present invention: a pressing portion is slidably connected to the upper end of the lifting base plate, the pressing portion is arranged parallel to the clamping portion, and the pressing portion includes a clamping bracket and a tensioning plate arranged on the upper part of the clamping bracket.

[0016] The tensioning plate has an L-shaped structure. After stacking is completed, the tensioning plate can be clamped on the outside of the battery cell to compress the stacked battery cells.

[0017] As a further solution of the present invention: the stacking platform assembly includes a platform plate, which is fixedly connected to the outer frame assembly and is located in the clamping part.

[0018] The stand plate is located inside the clamping portion, which facilitates the clamping portion to clamp the battery cell and move on the stand plate to move the battery cell to a desired position.

[0019] As a further solution of the present invention: a blocking bracket is provided at one end of the platform plate, and longitudinal carrier bars and transverse carrier bars are provided on the platform plate. The longitudinal carrier bars are arranged along the length direction of the platform plate, and the transverse carrier bars are arranged along the width direction of the platform plate. A second lifting mechanism for driving the longitudinal carrier bars to move up and down is provided under the platform plate.

[0020] The second lifting mechanism adopts a lifting cylinder. The second lifting mechanism can lift or retract the longitudinal carrier strips to leave space for the stacking action of the small-surface bonding of the battery cells into groups. According to whether the large-surface bonding is grouped or the small-surface bonding is grouped, the second lifting mechanism is controlled to lift or retract the longitudinal carrier strips.

[0021] As a further solution of the present invention: the stacking drive assembly includes a linear module and an auxiliary linear module fixedly connected to the outer frame assembly, the linear module and the auxiliary linear module are arranged in parallel, the carrying substrate is horizontally slidably connected to the outer frame assembly through the linear module and the auxiliary linear module, and the carrying substrate is provided with a power mechanism for driving the carrying substrate to slide horizontally.

[0022] The stacking drive assembly drives the stacking execution assembly to receive the battery cells delivered by the robot and perform the stacking grouping action.

[0023] As a further solution of the present invention: the outer frame assembly includes an outer frame body and feet and casters arranged at the lower end of the outer frame body.

[0024] Casters and feet make it easy to move and fix the stacking device, increasing the flexibility of the product.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This application uses the cooperation of the stacking actuator and the stacking stand assembly, and the stacking mechanism is compatible with clamping and stacking battery cells of different sizes, thereby stacking battery cell modules with large-surface bonding and small-surface bonding;

[0027] 2. A stacking device in the present application can be compatible with stacking two types of battery cell modules: one in which the large and wide surfaces of the battery cells are bonded together, and the other in which the small and narrow surfaces are bonded together. It can achieve flexible stacking, is compatible with stacking battery cells of different sizes, can quickly switch between stacking battery cells with large differences in size, improve stacking efficiency, and reduce the configuration cost of stacking equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the overall assembly of the stacking device of this embodiment;

[0029] Figure 2 Schematic diagram of the external frame assembly of this embodiment;

[0030] Figure 3 Schematic diagram of stacking execution components in this embodiment;

[0031] Figure 4 Schematic diagram of the stacking rack assembly of this embodiment;

[0032] Figure 5 Schematic diagram of the stacking drive assembly of this embodiment;

[0033] Figure 6 The effect diagram of large-surface lamination and stacking of battery cells in this embodiment;

[0034] Figure 7 A partial rendering of the large-surface lamination and stacking of battery cells in this embodiment;

[0035] Figure 8 Effect diagram of the stacking of the small faces of the battery cells in this embodiment;

[0036] Figure 9 A partial rendering of the stacking of the battery cell facets in this embodiment;

[0037] In the picture:

[0038] 1- outer frame assembly, 11- outer frame, 12- foot, 13- caster;

[0039] 2- stacking actuator, 21- clamping part, 211- bottom support plate, 212- clamping plate, 213- clamping bracket, 22- pressing part, 221- tensioning plate, 222- clamping bracket, 23- horizontal movement force mechanism, 24- first lifting mechanism, 25- guide linear bearing, 26- lifting base plate;

[0040] 3- stacking platform assembly, 31- platform plate, 32- blocking bracket, 33- longitudinal carrier bar, 34- transverse carrier bar, 35- second lifting mechanism;

[0041] 4- stacking drive assembly, 41- linear module, 42- auxiliary linear module, 43- carrier base plate. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0043] See also Figure 1 In an embodiment of the present invention, a square battery cell stacking device includes an outer frame component 1, a stacking execution component 2, a stacking stand component 3, and a stacking drive component 4.

[0044] like Figure 2 As shown, the outer frame assembly 1 includes an outer frame body 11 and feet 12 and casters 13 arranged at the lower end of the outer frame body 11. The casters and feet facilitate the movement and fixation of the stacking device, thereby increasing the flexibility of the product. In addition, the outer frame assembly includes related equipment cover plates, maintenance doors and other accessories, which are not described here and can be set according to specific needs.

[0045] like Figure 5 As shown, a stacking drive assembly 4 is provided on the outer frame assembly 1, and the stacking drive assembly 4 includes a carrier substrate 43 horizontally slidably connected to the outer frame assembly 1. The stacking drive assembly 4 includes a linear module 41 and an auxiliary linear module 42 fixedly connected to the outer frame assembly 1. The linear module 41 and the auxiliary linear module 42 are arranged in parallel. The carrier substrate 43 is horizontally slidably connected to the outer frame assembly 1 through the linear module 41 and the auxiliary linear module 42. A power mechanism for driving the carrier substrate 43 to slide horizontally is provided on the carrier substrate 43.

[0046] like Figure 4 As shown, at least one stacking platform assembly 3 is provided on the outer frame assembly 1. In this embodiment, four stacking platform assemblies 3 are provided. The stacking platform assembly 3 includes a platform plate 31, which is fixedly connected to the outer frame assembly 1. A blocking bracket 32 ​​is provided at one end of the platform plate 31. A longitudinal carrier bar 33 and a transverse carrier bar 34 are provided on the platform plate 31. The longitudinal carrier bar 33 is arranged along the length direction of the platform plate 31, and the transverse carrier bar 34 is arranged along the width direction of the platform plate 31. A second lifting mechanism 35 for driving the longitudinal carrier bar 33 to move up and down is provided under the platform plate 31. In this embodiment, the second lifting mechanism 35 adopts a lifting cylinder. The second lifting mechanism 35 can lift or retract the longitudinal carrier bar 33, leaving space required for the stacking action of the small surface bonding of the battery cells. According to the stacking of large surface bonding groups or small surface bonding groups, the second lifting mechanism 35 is controlled to lift or retract the longitudinal carrier bar.

[0047] like Figure 3 As shown, at least one stacking actuator 2 is provided on the carrier substrate 43. In this embodiment, four stacking actuators 2 are provided, which cooperate with the four stacking stage assemblies 3. The stacking actuator 2 includes a lifting base 26, which is connected to the carrier substrate 43 for sliding up and down through a guide linear bearing 25. The carrier substrate 43 is provided with a first lifting mechanism 24 for driving the carrier substrate 43 to slide up and down. The carrier substrate 43 is provided with a clamping portion 21 and a pressing portion 22 for horizontal sliding. The clamping portion 21 and the pressing portion 22 are both connected to the lifting base 26 for horizontal sliding through a transverse force mechanism 23. In this embodiment, the first lifting mechanism 24 adopts a lifting cylinder. The lifting base 26 is driven up and down by the first lifting mechanism 24 to lift and move the battery cells to the position to be stacked. After stacking is completed, the lifting base 26 can be driven down to release the stacked battery cells. The transverse force mechanism 23 is provided to drive the clamping portion 21 to clamp or release the battery cells.

[0048] like Figure 6 、 7As shown in Figures 8 and 9, the clamping portion 21 includes a pair of clamping arms, the clamping arms include a clamping bracket 213 and a clamping plate 212 arranged on the upper part of the clamping bracket 213 for clamping the battery cell, and a bottom support plate 211 fixedly connected to the clamping bracket 213 is provided below the clamping plate 212. The pressing portion 22 is arranged parallel to the clamping portion 21, and the clamping portion 22 includes a clamping bracket 222 and a tensioning plate 221 arranged on the upper part of the clamping bracket 222. In this embodiment, the battery cell is supported by the bottom support plate 211, which facilitates the clamping plate 211 to clamp the battery cell, and also avoids the problem of the battery cell falling off during the clamping movement. The tensioning plate 221 is an L-shaped structure. After stacking is completed, the stacked battery cell can be clamped by clamping the tensioning plate 221 on the outside of the battery cell.

[0049] When the present invention is in use, first, when the large surface of the battery cells are laminated and stacked according to demand, the stacking execution component 2, driven by the stacking drive component 4, moves to the set position, the lifting cylinder is lifted, and the guide linear bearing 25 guides the lifting base plate 26. The clamping part 21 opens the clamping bracket 213 of the clamping part 21 to the set position under the horizontal drive of the horizontal force mechanism 23. The manipulator grabs the conveyed square battery cells and places them on the bottom support plate 211. After the manipulator withdraws, the servo motor and reducer of the horizontal force mechanism 23 drive the left and right clamping brackets 213 to slide horizontally toward each other and clamp them through the linear module. The clamping plate 212 contacts the small surface of the battery cell, clamps the battery cell, and completes the action of receiving the battery cell.

[0050] The stacking execution component 2 on the carrier substrate 43 is driven by the linear module 41 and assisted by the auxiliary linear module 42 to slide to the set stacking position. After the lifting cylinder is lowered into place, the battery cell to be bonded with a large surface is placed in contact with the stand plate 31. At the same time, the stacking execution component 2 continues to slide in the stacking direction driven by the stacking drive component 4. At the same time, the transverse force mechanism 23 drives the left and right clamping parts 22 to slide laterally and clamp towards each other. After the tensioning plate 221 contacts the battery cell to be stacked, the clamping bracket 213 of the clamping part 21 slides in the opposite direction to release the battery cell. Then, the tensioning plate 221 runs in the stacking direction driven by the stacking drive component 4. When the set conditions are met, the stacking action is completed and the stacking of the battery cell with a large surface is completed. The corresponding stacking execution component 2 is reset to the set position and is ready to repeat the next stacking action. The effect diagram of the large surface bonding stacking of the battery cell and the local enlarged effect diagram are attached. Figure 6 、 7 .

[0051] In particular, when the small-surface bonding and stacking of the battery cells is being performed, the corresponding lifting cylinder of the stacking platform assembly moves downward, retracting the longitudinal carrier strip 33 into the interior of the platform plate 31, leaving operating space for the clamping portion 21 and the pressing portion 22 of the stacking execution assembly 2. The remaining small-surface bonding and stacking process of the battery cells refer to the large-surface bonding and stacking process of the battery cells. The effect diagram of the small-surface bonding and stacking of the battery cells and the partial enlarged effect diagram are attached. Figure 8 、 9 .

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A square battery cell stacking device, comprising an outer frame assembly (1), characterized in that: The outer frame assembly (1) is provided with a stacking drive assembly (4), the stacking drive assembly (4) comprising a carrier base plate (43) horizontally slidably connected to the outer frame assembly (1), at least one stacking execution assembly (2) being provided on the carrier base plate (43), and the outer frame assembly (1) is provided with at least one stacking platform assembly (3) cooperating with the stacking execution assembly (2).

2. A square battery cell stacking device according to claim 1, characterized in that: The stacking execution assembly (2) comprises a clamping portion (21) arranged to slide horizontally with the carrier substrate (43).

3. The square battery cell stacking device according to claim 2, characterized in that: The stacking execution component (2) includes a lifting base plate (26), the lifting base plate (26) is connected to the supporting base plate (43) in an upward and downward sliding manner through a guide linear bearing (25), the supporting base plate (43) is provided with a first lifting mechanism (24) for driving the supporting base plate (43) to slide up and down, and the clamping portion (21) is connected to the lifting base plate (26) in a horizontal sliding manner through a transverse force mechanism (23).

4. The square battery cell stacking device according to claim 3, characterized in that: The clamping portion (21) comprises a pair of clamping arms, the clamping arms comprising a clamping bracket (213) and a clamping plate (212) arranged on the upper portion of the clamping bracket (213) for clamping the battery core, and a bottom support plate (211) fixedly connected to the clamping bracket (213) is arranged below the clamping plate (212).

5. The square battery cell stacking device according to claim 3, characterized in that: The upper end of the lifting base plate (26) is slidably connected to a pressing portion (22), the pressing portion (22) is arranged in parallel with the clamping portion (21), and the pressing portion (22) includes a clamping bracket (222) and a tensioning plate (221) arranged on the upper part of the clamping bracket (222).

6. The square battery cell stacking device according to claim 2, characterized in that: The stacking platform assembly (3) comprises a platform plate (31), the platform plate (31) is fixedly connected to the outer frame assembly (1), and the platform plate (31) is located in the clamping portion (21).

7. The square battery cell stacking device according to claim 6, characterized in that: A blocking bracket (32) is provided at one end of the platform plate (31), and a longitudinal carrier bar (33) and a transverse carrier bar (34) are provided on the platform plate (31). The longitudinal carrier bar (33) is arranged along the length direction of the platform plate (31), and the transverse carrier bar (34) is arranged along the width direction of the platform plate (31). A second lifting mechanism (35) for driving the longitudinal carrier bar (33) to move up and down is provided below the platform plate (31).

8. The square battery cell stacking device according to claim 1, characterized in that: The stacking drive assembly (4) comprises a linear module (41) and an auxiliary linear module (42) fixedly connected to the outer frame assembly (1); the linear module (41) and the auxiliary linear module (42) are arranged in parallel; the supporting base plate (43) is horizontally slidably connected to the outer frame assembly (1) via the linear module (41) and the auxiliary linear module (42); and a power mechanism for driving the supporting base plate (43) to slide horizontally is provided on the supporting base plate (43).

9. The square battery cell stacking device according to claim 1, characterized in that: The outer frame assembly (1) comprises an outer frame body (11) and feet (12) and casters (13) arranged at the lower end of the outer frame body (11).

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