Cylindrical battery cell packaging structure

Abstract

The utility model provides a cylindrical battery cell packaging structure which comprises a bottom plate, a top plate and a plurality of supporting plates. A plurality of first storage units for horizontally placing cylindrical battery cells are arranged on the top surface of the bottom plate; a plurality of supporting plates are stacked in the vertical direction, the supporting plate on the bottommost layer covers the bottom plate, a plurality of second storage units used for horizontally placing the cylindrical battery cells are arranged on the top surfaces of the supporting plates, and first covering units matched with the first storage units are arranged on the bottom surfaces of the supporting plates; the first covering unit of the supporting plate of the current layer is matched with the second storage unit of the supporting plate of the next layer; the top plate covers the supporting plate on the topmost layer, and a second covering unit matched with the second storage unit is arranged on the bottom face of the top plate. The contact surface of the cylindrical battery cell and the packaging structure is a cylindrical surface, the contact area is large, and the pressure is reduced, so that the cylindrical battery cell is prevented from being deformed and damaged due to high pressure; compared with a small carton package with a knife card or a pearl wool lining, frequent packaging, sealing and carrying are not needed, and the packaging efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cylindrical battery core packaging structure. Background Art

[0002] With the widespread use of electric vehicles and rechargeable devices, the transportation of battery cells has become increasingly important. Battery cells are the core components of electric vehicles and rechargeable devices, and their safe transportation is crucial to ensuring product quality and consumer safety. In order to ensure the safe transportation of battery cells, a series of battery cell transportation requirements have been formulated, and the packaging and packaging materials of battery cells must comply with relevant national and industry standards. Battery cells should be placed in special packaging boxes, and the packaging food should have functions such as shockproof, anti-static and waterproof. The packaging materials should have characteristics such as pressure resistance, impact resistance and fire resistance to ensure that the battery cells are not damaged during transportation.

[0003] At present, the transportation packaging of cylindrical batteries is often lined with knife cards or pearl cotton, and the cylindrical batteries are placed vertically and then placed in cartons. This method has the following disadvantages:

[0004] 1. When using cylindrical cells to place the knife card vertically, there is a large gap between the cell and the knife card, and the bottom area of ​​the cylindrical cell is small and it is unstable when placed vertically. The cylindrical cell shakes greatly during transportation, which will cause certain damage to the cylindrical cell;

[0005] 2. Pearl cotton lining is better in protection, but the cost is high, and the cartons are more laborious to transport, which increases the workload and has low efficiency;

[0006] 3. When placed vertically, there are poles and explosion-proof valves on the top of the cylindrical battery cell that need to be avoided. In this way, the position on the top of the cylindrical battery cell that can withstand pressure is very small, and the pressure it is subjected to will be very large, which can easily cause the battery cell to be deformed and damaged under pressure. Utility Model Content

[0007] In view of this, the utility model proposes a cylindrical battery cell packaging structure to solve the technical problems proposed in the above background technology that the cylindrical battery cell is easy to shake due to the large gap between the battery cell and the knife card, the cost of pearl cotton lining is high and it is laborious to carry, and the cylindrical battery cell has a small pressure-bearing area when placed vertically and is easily deformed and damaged due to the high pressure.

[0008] The technical solution of the utility model is achieved in this way:

[0009] The utility model provides a cylindrical battery cell packaging structure, comprising a bottom plate, a top plate and a plurality of support plates, wherein:

[0010] A plurality of first storage units for horizontally placing cylindrical cells are provided on the top surface of the bottom plate;

[0011] A plurality of the pallets are stacked in a vertical direction, and the pallet at the bottom layer is covered on the bottom plate, a plurality of second storage units for horizontally placing cylindrical cells are arranged on the top surface of the pallet, a first covering unit matching the first storage unit is arranged on the bottom surface of the pallet, and the first covering unit of the pallet of the current layer matches the second storage unit of the pallet of the next layer;

[0012] The top plate is covered on the topmost support plate, and a second covering unit matching the second storage unit is provided on the bottom surface of the top plate.

[0013] On the basis of the above technical solution, preferably, the first storage unit includes a plurality of first storage cavities, the cylindrical battery cell is horizontally placed in the first storage cavity, and the cavity wall of the first storage cavity is semi-cylindrical; the first covering unit includes a plurality of first covering cavities matching the first storage cavity, the cavity wall of the first covering cavity is semi-cylindrical, and the axis of the first covering cavity and the axis of the corresponding first storage cavity are located in the same vertical plane;

[0014] The second storage unit includes a plurality of second storage cavities, the cylindrical battery cell is horizontally placed in the second storage cavity, and the second storage cavity is the same as the first storage cavity; the second covering unit includes a plurality of second covering cavities matching the second storage cavity, the cavity wall of the second covering cavity is semi-cylindrical, and the axis of the second covering cavity and the axis of the corresponding second storage cavity are located in the same vertical plane.

[0015] On the basis of the above technical solution, preferably, the edge of the first storage cavity is provided with a first heightened layer, so that a first transverse groove and a first longitudinal groove are formed between adjacent first storage units;

[0016] The bottom surface of the support plate is provided with a first transverse bar and a first longitudinal bar, wherein the first transverse bar is used to be engaged in the first transverse groove, and the first longitudinal bar is used to be engaged in the first longitudinal groove.

[0017] On the basis of the above technical solution, preferably, the edge of the second storage cavity is provided with a second heightened layer, so that a second transverse groove and a second longitudinal groove are formed between adjacent second storage units;

[0018] The bottom surface of the top plate is provided with a second horizontal bar and a second vertical bar;

[0019] The second transverse groove is used for engaging with the first transverse bar or the second transverse bar, and the second longitudinal groove is used for engaging with the first transverse bar or the second transverse bar.

[0020] On the basis of the above technical solution, preferably, the first storage cavity is provided with first pick-up and release grooves on both sides along the diameter direction, and the second storage cavity is provided with second pick-up and release grooves on both sides along the diameter direction.

[0021] On the basis of the above technical solution, preferably, a first positioning groove is provided between adjacent first storage units along the diameter direction of the same first storage cavity, and the first positioning groove is located below the first longitudinal groove;

[0022] A first positioning block matching the first positioning groove is disposed on the bottom surface of the support plate, and the first positioning block is protruded on the first longitudinal bar.

[0023] On the basis of the above technical solution, preferably, a second positioning groove is provided between adjacent second storage units along the diameter direction of the same second storage cavity, and the second positioning groove is located below the second longitudinal groove;

[0024] The bottom surface of the top plate is provided with a second positioning block matching the second positioning groove, and the second positioning block is convexly arranged on the second longitudinal bar;

[0025] The second positioning groove is used for positioning and clamping with the second positioning block or the first positioning block.

[0026] On the basis of the above technical solution, preferably, the end of the first storage cavity is provided with a first avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the first covering cavity is provided with a second avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the second storage cavity is provided with a third avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the second covering cavity is provided with a fourth avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve.

[0027] On the basis of the above technical solution, preferably, a first groove is provided on the side of the bottom plate, a second groove is provided on the side of the support plate, and a third groove is provided on the side of the cover plate.

[0028] On the basis of the above technical solution, preferably, it also includes a wooden pallet, a carton, a strap and a plastic sealing film, the bottom plate is placed on the wooden pallet, the carton is sleeved outside the bottom plate, the pallet and the top plate, the strap is tied outside the carton and passes through the wooden pallet, and the plastic sealing film is wrapped around the outermost layer.

[0029] The cylindrical battery packing structure of the utility model has the following beneficial effects compared with the prior art:

[0030] (1) The cylindrical battery cell is placed horizontally by the first storage unit and the second storage unit, so that the contact surface between the cylindrical battery cell and the packaging structure is a cylindrical surface, the contact area is large, the pressure is reduced, and the cylindrical battery cell is prevented from being deformed and damaged due to the large pressure; multiple pallets are stacked in the vertical direction, and the bottom pallet is covered on the bottom plate, and the top plate is covered on the top pallet, and the cylindrical battery cell is limited by the first covering unit and the second covering unit. Compared with the small carton packaging using knife cards or pearl cotton as the inner lining, it does not need to be frequently packed, sealed, and transported, so it can be applied to the automated packaging line, which can improve the packaging efficiency;

[0031] (2) A first heightened layer is provided at the edge of the first storage cavity, so that a first transverse groove and a first longitudinal groove are formed between adjacent first storage units; the first heightened layer can limit the position of the cylindrical battery cell in the first storage cavity, and the support plate can be prevented from contacting the cylindrical battery cell after being compressed and deformed, so that the cylindrical battery cell is in a non-compressed state in the first storage cavity, which can effectively protect the safety of the cylindrical battery cell;

[0032] The first horizontal bar is engaged in the first horizontal groove, and the first vertical bar is engaged in the first vertical groove, so that the support plate is limited in the horizontal and vertical directions, so that the support plate is limited after being covered on the bottom plate, thereby improving reliability and stability;

[0033] (3) A second heightened layer is provided at the edge of the second storage cavity, so that a second transverse groove and a second longitudinal groove are formed between adjacent second storage units; the second heightened layer can limit the position of the cylindrical battery cell in the second storage cavity, and the support plate or the top plate can be prevented from contacting the cylindrical battery cell after being deformed by pressure, so that the cylindrical battery cell is in a non-pressurized state in the second storage cavity, which can effectively protect the safety of the cylindrical battery cell;

[0034] The second transverse groove is used to engage with the first transverse bar or the second transverse bar, and the second longitudinal groove is used to engage with the first transverse bar or the second transverse bar, so as to realize the transverse and longitudinal positioning of the upper support plate and the top plate, so that the support plates are limited after being stacked, and the top plate is limited after being covered on the top support plate, thereby improving reliability and stability;

[0035] (4) A first positioning groove is provided between adjacent first storage units along the same diameter direction of the first storage cavity, and a first positioning block matching the first positioning groove is provided on the bottom surface of the support plate. The first positioning block is engaged with the first positioning groove, thereby realizing the positioning of the support plate on the bottom plate, thereby improving the convenience and reliability of assembly;

[0036] (5) A second positioning groove is provided between adjacent second storage units along the same diameter direction of the second storage cavity, and a second positioning block matching the second positioning groove is provided on the bottom surface of the top plate. When the pallets are stacked, the second positioning groove is used to be positioned and engaged with the first positioning block to achieve positioning of the pallets when they are stacked. The second positioning groove is positioned and engaged with the second positioning block to achieve positioning of the top plate cover on the top pallet, thereby improving the convenience and reliability of installation;

[0037] (6) A first avoidance portion is provided at the end of the first storage cavity, a second avoidance portion is provided at the end of the first covering cavity, and a third avoidance portion is provided at the end of the second storage cavity; a fourth avoidance portion is provided at the end of the second covering cavity, which is used to avoid the cylindrical battery cell pole and the explosion-proof valve to prevent the pole and the explosion-proof valve from being subjected to force or contact, effectively protecting the pole from appearance wear caused by frequent contact during transportation, and improving reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a three-dimensional diagram of the cylindrical battery packing structure of the utility model;

[0040] Figure 2 An exploded view of the cylindrical battery packing structure of the utility model;

[0041] Figure 3 A three-dimensional diagram of the bottom plate of the utility model from the top perspective;

[0042] Figure 4 For the utility model Figure 3 A partial enlarged view of the middle A part;

[0043] Figure 5 It is a three-dimensional diagram of the support plate of the utility model from the top perspective;

[0044] Figure 6 For the utility model Figure 5 A partial enlarged view of part B in the middle;

[0045] Figure 7 It is a three-dimensional diagram of the support plate of the utility model from the bottom perspective;

[0046] Figure 8 For the utility model Figure 7 A partial enlarged view of the middle C part;

[0047] Fig. 9 It is a three-dimensional diagram of the fixed plate of the utility model from the bottom perspective;

[0048] Fig.10 For the utility model Fig. 9 A partial enlarged view of section D in the middle.

[0049] Description of reference numerals: 1-bottom plate, 2-support plate, 3-top plate, 4-wooden bracket;

[0050] 100-Cylindrical battery cell;

[0051] 11-first storage unit, 111-first storage cavity, 1111-first avoidance portion, 112-first heightened layer, 113-first taking and placing groove, 12-first transverse groove, 13-first longitudinal groove, 14-first positioning groove, 15-first picking groove;

[0052] 21-second storage unit, 211-second storage cavity, 2111-third avoidance portion, 212-second heightened layer, 213-second access groove, 22-first covering unit, 221-first covering cavity, 2211-second avoidance portion, 23-first horizontal bar, 24-first vertical bar, 241-first positioning block, 25-second horizontal groove, 26-second vertical groove, 27-second positioning groove, 28-second pick groove;

[0053] 31 - second covering unit, 311 - second covering cavity, 3111 - fourth avoidance portion, 32 - second horizontal bar, 33 - second vertical bar, 331 - second positioning block, 34 - third groove. DETAILED DESCRIPTION

[0054] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] Reference Figure 1-Figure 10 As shown, this embodiment proposes a cylindrical battery cell packaging structure, including a bottom plate 1, a top plate 3 and a plurality of support plates 2, wherein:

[0056] A plurality of first storage units 11 for horizontally placing cylindrical cells 100 are arranged on the top surface of the bottom plate 1;

[0057] The plurality of pallets 2 are stacked in the vertical direction, and the bottommost pallet 2 is covered on the bottom plate 1, the top surface of the pallet 2 is provided with a plurality of second storage units 21 for horizontally placing the cylindrical battery cells 100, and the bottom surface of the pallet 2 is provided with a first covering unit 22 matching the first storage unit 11, and the first covering unit 22 of the pallet 2 of the current layer matches the second storage unit 21 of the pallet 2 of the next layer;

[0058] The top plate 3 is covered on the topmost support plate 2 , and a second covering unit 31 matching with the second storage unit 21 is disposed on the bottom surface of the top plate 3 .

[0059] The cylindrical battery cell packaging structure provided in the present embodiment horizontally places the cylindrical battery cell 100 through the first storage unit 11 and the second storage unit 21, so that the contact surface between the cylindrical battery cell 100 and the packaging structure is a cylindrical surface, and the contact area is large, which reduces the pressure, thereby preventing the cylindrical battery cell 100 from being deformed and damaged due to the large pressure; multiple pallets 2 are stacked in the vertical direction, and the bottom layer of the pallet 2 is covered on the bottom plate 1, and the top plate 3 is covered on the top layer of the pallet 2, and the cylindrical battery cell 100 is limited by the first covering unit 22 and the second covering unit 31. Compared with small carton packaging using knife cards or pearl cotton as lining, it does not need to be frequently packed, sealed and transported, so it can be suitable for automated packaging lines and can improve packaging efficiency.

[0060] In some embodiments, the first storage unit 11 includes a plurality of first storage cavities 111, the cylindrical battery cell 100 is horizontally placed in the first storage cavity 111, and the cavity wall of the first storage cavity 111 is semi-cylindrical; the first covering unit 22 includes a plurality of first covering cavities 221 matching the first storage cavity 111, the cavity wall of the first covering cavity 221 is semi-cylindrical, and the axis of the first covering cavity 221 is located in the same vertical plane as the axis of the corresponding first storage cavity 111; the second storage unit 21 includes a plurality of second storage cavities 211, the cylindrical battery cell 100 is horizontally placed in the second storage cavity 211, and the second storage cavity 211 is the same as the first storage cavity 111; the second covering unit 31 includes a plurality of second covering cavities 311 matching the second storage cavity 211, the cavity wall of the second covering cavity 311 is semi-cylindrical, and the axis of the second covering cavity 311 is located in the same vertical plane as the axis of the corresponding second storage cavity 211. The cylindrical battery cell 100 is placed horizontally in the first storage cavity 111 or the second storage cavity 211, and a gap of 0.5-1mm is left in the length direction of the cylindrical battery cell 100 to facilitate the placement and removal of the cylindrical battery cell 100. The small gap can also effectively block the vertical vibration of the cylindrical battery cell 100. After the support plate 2 is placed on the bottom plate 1, the first covering cavity 221 covers the first storage cavity 111, thereby fixing the cylindrical battery cell 100. When the current layer support plate 2 is placed on the lower layer support plate 2, the first covering cavity 221 covers the second storage cavity 211. When the top is placed on the top layer support plate 2, the second covering cavity 311 covers the second storage cavity 211, thereby fixing each layer of cylindrical battery cells 100.

[0061] In some embodiments, a first raised layer 112 is provided at the edge of the first storage cavity 111, so that a first transverse groove 12 and a first longitudinal groove 13 are formed between adjacent first storage units 11, the first transverse groove 12 and the first longitudinal groove 13 are arranged vertically in an alternating manner, and the first transverse groove 12 is arranged along the diameter direction of the first storage cavity 111; the bottom surface of the pallet 2 is provided with a first transverse bar 23 and a first longitudinal bar 24, the first transverse bar 23 is used to be engaged in the first transverse groove 12, and the first longitudinal bar 24 is used to be engaged in the first longitudinal groove 13. By providing a first raised layer 112 at the edge of the first storage cavity 111, the cylindrical battery cell 100 can be limited in the first storage cavity 111, and the support plate 2 can be prevented from contacting the cylindrical battery cell 100 after being compressed and deformed, so that the cylindrical battery cell 100 is in a non-compressed state in the first storage cavity 111, which can effectively protect the safety of the cylindrical battery cell 100; the first horizontal bar 23 is engaged in the first horizontal groove 12, and the first vertical bar 24 is engaged in the first vertical groove 13, so that the support plate 2 is limited in the horizontal and vertical directions, so that the support plate 2 is limited after being covered on the bottom plate 1, thereby improving reliability and stability.

[0062] In some embodiments, a second raised layer 212 is provided at the edge of the second storage cavity 211 so that a second transverse groove 25 and a second longitudinal groove 26 are formed between adjacent second storage units 21. The second transverse grooves 25 and the second longitudinal grooves 26 are arranged vertically in an alternating manner, and the second transverse grooves 25 are arranged along the diameter direction of the second storage cavity 211; a second transverse bar 32 and a second longitudinal bar 33 are provided on the bottom surface of the top plate 3; the second transverse groove 25 is used to engage with the first transverse bar 23 or the second transverse bar 32, and the second longitudinal groove 26 is used to engage with the first transverse bar 23 or the second transverse bar 32. By providing a second raised layer 212 at the edge of the second storage cavity 211, the cylindrical battery cell 100 can be limited in the second storage cavity 211, and the support plate 2 or the top plate 3 can be prevented from contacting the cylindrical battery cell 100 after being compressed and deformed, so that the cylindrical battery cell 100 is in a non-compressed state in the second storage cavity 211, which can effectively protect the safety of the cylindrical battery cell 100; the second transverse groove 25 is used to engage with the first transverse bar 23 or the second transverse bar 32, and the second longitudinal groove 26 is used to engage with the first transverse bar 23 or the second transverse bar 32, so as to realize the lateral and longitudinal positioning of the upper support plate 2 and the top plate 3, so that the support plate 2 is limited after being stacked, and the top plate 3 is limited after being covered on the top support plate 2, thereby improving reliability and stability.

[0063] In some embodiments, the first storage cavity 111 is provided with first access grooves 113 on both sides along the diameter direction, and the second storage cavity 211 is provided with second access grooves 213 on both sides along the diameter direction. The provision of the first access groove 113 and the second access groove 213 can facilitate the access to the cylindrical battery cell 100, thereby improving convenience; the first access groove 113 can be provided in the middle of both sides along the diameter direction of the first storage cavity 111, and the second access groove 213 can be provided in the middle of both sides along the diameter direction of the second storage cavity 211, so that when taking the cylindrical battery cell 100, the center of gravity of the cylindrical battery cell 100 can be held, and the cylindrical battery cell 100 can be taken more stably.

[0064] In some embodiments, a first positioning groove 14 is provided between adjacent first storage units 11 along the diameter direction of the same first storage cavity 111, and the first positioning groove 14 is located below the first longitudinal groove 13; a first positioning block 241 matching the first positioning groove 14 is provided on the bottom surface of the support plate 2, and the first positioning block 241 is protruded on the first longitudinal bar 24. By providing the first positioning groove 14 between adjacent first storage units 11 along the diameter direction of the same first storage cavity 111, and providing the first positioning block 241 matching the first positioning groove 14 on the bottom surface of the support plate 2, the first positioning block 241 is engaged with the first positioning groove 14, so as to realize the positioning of the support plate 2 on the cover of the bottom plate 1, and improve the convenience and reliability of assembly. In actual design, the first positioning groove 14 can be connected with the first pick-and-place groove 113 and have the same depth, so that the structure of the bottom plate 1 is simpler and the manufacturing and molding of the bottom plate 1 is convenient.

[0065] In some embodiments, a second positioning groove 27 is provided between adjacent second storage units 21 along the diameter direction of the same second storage cavity 211, and the second positioning groove 27 is located below the second longitudinal groove 26; a second positioning block 331 matching the second positioning groove 27 is provided on the bottom surface of the top plate 3, and the second positioning block 331 is convexly provided on the second longitudinal bar 33; the second positioning groove 27 is used for positioning and snapping with the second positioning block 331 or the first positioning block 241. By providing the second positioning groove 27 between adjacent second storage units 21 along the diameter direction of the same second storage cavity 211, and providing the second positioning block 331 matching the second positioning groove 27 on the bottom surface of the top plate 3, when the pallets 2 are stacked, the second positioning groove 27 is used for positioning and snapping with the first positioning block 241, so as to realize the positioning of the pallets 2 when they are stacked, and the second positioning groove 27 is positioned and snapped with the second positioning block 331, so as to realize the positioning of the top plate 3 covering the top pallet 2, thereby improving the convenience and reliability of installation. In actual design, the second positioning groove 27 can be connected to the second placing and taking groove 213 and have the same depth, so that the structure of the support plate 2 is simpler and the manufacturing and forming of the support plate 2 is facilitated.

[0066] In some embodiments, the end of the first storage cavity 111 is provided with a first avoidance portion 1111 for avoiding the pole of the cylindrical battery cell 100 and the explosion-proof valve; the end of the first cover cavity 221 is provided with a second avoidance portion 2211 for avoiding the pole of the cylindrical battery cell 100 and the explosion-proof valve; the end of the second storage cavity 211 is provided with a third avoidance portion 2111 for avoiding the pole of the cylindrical battery cell 100 and the explosion-proof valve; the end of the second cover cavity 311 is provided with a fourth avoidance portion 3111 for avoiding the pole of the cylindrical battery cell 100 and the explosion-proof valve. By providing the first avoidance portion 1111, the second avoidance portion 2211, the third avoidance portion 2111 and the fourth avoidance portion 3111, the pole of the cylindrical battery cell 100 and the explosion-proof valve are avoided, the pole and the explosion-proof valve are prevented from being subjected to force or contact, and the pole is effectively protected from appearance wear caused by frequent contact during transportation, thereby improving reliability and stability.

[0067] In some embodiments, the side of the base plate 1 is provided with a first groove 15, the side of the support plate 2 is provided with a second groove 28, and the side of the cover plate is provided with a third groove 34. The first groove 15 can be provided at the upper part of the side of the base plate 1, the second groove 28 can be provided at the lower part of the side of the support plate 2, and the third groove 34 can be provided at the lower part of the side of the cover plate. By providing the first groove 15, the second groove 28, and the third groove 34, it is convenient to clamp and transfer the base plate 1, the support plate 2, and the cover plate by a fixture, thereby improving the convenience of manufacturing. The first groove 15, the second groove 28, and the third groove 34 can be provided on the same vertical line, and the same position can be clamped during transfer, and it can be observed from the outside whether the three are aligned when covered.

[0068] In some embodiments, the cylindrical battery cell packaging structure further includes a wooden bracket 4, a carton, a binding tape and a plastic film, the bottom plate 1 is placed on the wooden bracket 4, the carton is sleeved outside the bottom plate 1, the bracket 2 and the top plate 3, the binding tape is tied outside the carton and passes through the wooden bracket 4, and the plastic film is wrapped around the outermost layer. Through the above packaging method, the packaging structure can be made more solid, and the reliability and stability can be further improved.

[0069] The working principle of the cylindrical battery cell packaging structure is: the cylindrical battery cell 100 is horizontally placed in the first storage cavity 111. After the battery cells are filled, the pallet 2 is placed on the bottom plate 1, and the first covering cavity 221 covers the first storage cavity 111, thereby fixing the cylindrical battery cell 100; the cylindrical battery cells 100 are placed layer by layer in the second storage cavity 211 of each layer of the pallet 2, and when the current layer of the pallet 2 is placed on the lower layer of the pallet 2, the first covering cavity 221 covers the second storage cavity 211; when the top is placed on the top layer of the pallet 2, the second covering cavity 311 covers the second storage cavity 211, thereby fixing each layer of the cylindrical battery cells 100. In the cylindrical battery cell packaging structure, the contact surface between the cylindrical battery cell 100 and the packaging structure is a cylindrical surface, and the contact area is large, which reduces the pressure, thereby preventing the cylindrical battery cell 100 from being deformed and damaged due to the large pressure; compared with small carton packaging using knife cards or pearl cotton as lining, it does not require frequent packaging, sealing and transportation, so it can be suitable for automated packaging lines, which can improve packaging efficiency.

[0070] 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 cylindrical battery cell packaging structure, characterized in that: It includes a bottom plate, a top plate and a plurality of supporting plates, wherein: A plurality of first storage units for horizontally placing cylindrical cells are provided on the top surface of the bottom plate; A plurality of the pallets are stacked in a vertical direction, and the pallet at the bottom layer is covered on the bottom plate, a plurality of second storage units for horizontally placing cylindrical cells are arranged on the top surface of the pallet, a first covering unit matching the first storage unit is arranged on the bottom surface of the pallet, and the first covering unit of the pallet of the current layer matches the second storage unit of the pallet of the next layer; The top plate is covered on the topmost support plate, and a second covering unit matching the second storage unit is provided on the bottom surface of the top plate.

2. The cylindrical battery cell packaging structure according to claim 1, characterized in that: The first storage unit comprises a plurality of first storage cavities, the cylindrical battery cells are horizontally placed in the first storage cavities, and the cavity walls of the first storage cavities are semi-cylindrical; the first covering unit comprises a plurality of first covering cavities matching the first storage cavities, the cavity walls of the first covering cavities are semi-cylindrical, and the axes of the first covering cavities and the corresponding axes of the first storage cavities are located in the same vertical plane; The second storage unit includes a plurality of second storage cavities, the cylindrical battery cell is horizontally placed in the second storage cavity, and the second storage cavity is the same as the first storage cavity; the second covering unit includes a plurality of second covering cavities matching the second storage cavity, the cavity wall of the second covering cavity is semi-cylindrical, and the axis of the second covering cavity and the axis of the corresponding second storage cavity are located in the same vertical plane.

3. The cylindrical battery cell packaging structure according to claim 2, characterized in that: The edge of the first storage cavity is provided with a first raised layer so that a first transverse groove and a first longitudinal groove are formed between adjacent first storage units; The bottom surface of the support plate is provided with a first transverse bar and a first longitudinal bar, wherein the first transverse bar is used to be engaged in the first transverse groove, and the first longitudinal bar is used to be engaged in the first longitudinal groove.

4. The cylindrical battery cell packaging structure according to claim 3, characterized in that: The edge of the second storage cavity is provided with a second heightened layer so that a second transverse groove and a second longitudinal groove are formed between adjacent second storage units; The bottom surface of the top plate is provided with a second horizontal bar and a second vertical bar; The second transverse groove is used for engaging with the first transverse bar or the second transverse bar, and the second longitudinal groove is used for engaging with the first transverse bar or the second transverse bar.

5. The cylindrical battery cell packaging structure according to claim 4, characterized in that: The first storage cavity is provided with first access grooves on both sides along the diameter direction, and the second storage cavity is provided with second access grooves on both sides along the diameter direction.

6. The cylindrical battery cell packaging structure according to claim 5, characterized in that: A first positioning groove is provided between adjacent first storage units along the diameter direction of the same first storage cavity, and the first positioning groove is located below the first longitudinal groove; A first positioning block matching the first positioning groove is disposed on the bottom surface of the support plate, and the first positioning block is protruded on the first longitudinal bar.

7. The cylindrical battery cell packaging structure according to claim 6, characterized in that: A second positioning groove is provided between adjacent second storage units along the diameter direction of the same second storage cavity, and the second positioning groove is located below the second longitudinal groove; The bottom surface of the top plate is provided with a second positioning block matching the second positioning groove, and the second positioning block is convexly arranged on the second longitudinal bar; The second positioning groove is used for positioning and clamping with the second positioning block or the first positioning block.

8. The cylindrical battery cell packaging structure according to claim 7, characterized in that: The end of the first storage cavity is provided with a first avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the first covering cavity is provided with a second avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the second storage cavity is provided with a third avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve; the end of the second covering cavity is provided with a fourth avoidance portion for avoiding the cylindrical battery cell pole and the explosion-proof valve.

9. The cylindrical battery cell packaging structure according to any one of claims 1 to 8, characterized in that: The side surface of the bottom plate is provided with a first groove, the side surface of the supporting plate is provided with a second groove, and the side surface of the top plate is provided with a third groove.

10. The cylindrical battery cell packaging structure according to any one of claims 1 to 8, characterized in that: It also includes a wooden bracket, a carton, a strap and a plastic film. The bottom plate is placed on the wooden bracket, the carton is sleeved outside the bottom plate, the bracket and the top plate, the strap is tied outside the carton and passes through the wooden bracket, and the plastic film is wrapped around the outermost layer.

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