Battery protection structure

Abstract

The utility model relates to a battery protection structure belongs to the battery packaging and protection technical field, this battery protection structure discards the box body restriction of traditional battery safety packing box, through the design multiple battery protection unit, forms the battery protection structure of honeycomb structure by each battery protection unit splicing assembly, and each protection unit can expand the assembly according to the need, forms the protection structure of the required battery mounting position number, to solve the size fixed of the existing battery safety packing box, the fixed battery number of single box storage cannot realize the storage number expansion and the problem of low battery storage density per unit space.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging and protection technology, specifically to a battery protection structure for the safe transportation and protection of cylindrical batteries. Background Technology

[0002] During transportation, cylindrical batteries are typically stacked in fixed-shape battery safety packaging boxes. The outer shell and lid of the box work together to restrain and protect the batteries from collisions and drops during transport and storage. However, the internal dividers for placing the batteries in this type of structure are mostly square stacking structures, using multiple square arrays, with one battery in each square. Square stacking is not the most dense stacking method, taking up relatively much space and reducing the number of batteries that can be stored in the effective space, resulting in low battery storage density. In addition, because the packaging box dimensions are fixed, the number of batteries that can be placed in the box is fixed, and the number of batteries that can be stored cannot be expanded.

[0003] Therefore, a battery protection structure is needed to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved: To overcome the shortcomings of existing technologies, this utility model provides a battery protection structure. This structure abandons the box limitations of traditional battery safety packaging boxes and designs multiple battery protection units. These battery protection units are spliced ​​and assembled to form a honeycomb structure. Each protection unit can be expanded and assembled as needed to solve the problems of fixed size, fixed number of batteries stored in a single box, inability to expand the storage capacity, and low battery storage density per unit space in existing battery safety packaging boxes.

[0005] The technical solution of this utility model is: a battery protection structure, comprising: multiple battery protection units, each battery protection unit including at least one hexagonal prism shell, the hexagonal prism shell having a hexagonal prism shape and a cylindrical cavity inside, the cavity of one hexagonal prism shell serving as a mounting position for a cylindrical battery, the cavity size being adapted to the cylindrical battery, and the mounting axis of the battery being consistent with the axis of the hexagonal prism shell; multiple battery protection units are seamlessly spliced ​​and stacked to form a battery protection structure with the required number of battery mounting positions.

[0006] A further technical solution of this utility model is: the plurality of battery protection units include a first battery protection unit, a second battery protection unit and a third battery protection unit, and a first battery protection unit, a second battery protection unit and a third battery protection unit form a battery protection structure with a 3×5 specification mounting position.

[0007] A further technical solution of this utility model is as follows: the first battery protection unit is a hexagonal prism shell; the second battery protection unit includes five hexagonal prism shells connected in a circumferential manner, the five hexagonal prism shells are axially aligned, the outer prism surfaces of two adjacent hexagonal prism shells are in contact and fixedly connected, forming a central first void and a side gap; the third battery protection unit includes nine hexagonal prism shells, the nine hexagonal prism shells are stacked in three layers and axially aligned, with one hexagonal prism shell offset in the middle layer, the outer prism surfaces of two adjacent hexagonal prism shells are in contact and fixedly connected, forming a first protrusion on one side and a second void on the other side; The battery protection structure of the 3×5 mounting position is configured such that the first protruding position is inserted into the first empty position, and the first battery protection unit is inserted into the second empty position.

[0008] A further technical solution of this utility model is: the first battery protection unit, the second battery protection unit, and the third battery protection unit can be assembled in any two, used individually, or assembled in any multiple; when the axis of each battery protection unit is placed horizontally, they can be assembled in a horizontally extended manner or stacked vertically.

[0009] A further technical solution of this utility model is: the plurality of battery protection units further includes a fourth battery protection unit and a fifth battery protection unit. The fourth battery protection unit includes eight hexagonal prism shells. The fourth battery protection unit is an extension of the second battery protection unit. The two middle hexagonal prism shells of the fourth battery protection unit share a common structure to form an upper and lower stacked structure of the second battery protection unit, and form two first vacancy positions. The fifth battery protection unit includes fifteen hexagonal prism shells. The fifth battery protection unit is an extension of the third battery protection unit. The three middle hexagonal prism shells of the fifth battery protection unit share a common structure to form an upper and lower stacked structure of the third battery protection unit, and form two first protrusion positions and two second vacancy positions. Two first battery protection units, one fourth battery protection unit, and one fifth battery protection unit constitute a battery protection structure with a 5×5 mounting position. The two first protruding positions are inserted into the two first empty positions, and the two first battery protection units are inserted into the two second empty positions.

[0010] A further technical solution of this utility model is: the first battery protection unit, the fourth battery protection unit, and the fifth battery protection unit can be assembled in any two, used individually, or assembled in any multiple; when the axis of each battery protection unit is placed horizontally, they can be assembled in a horizontally extended manner or stacked vertically.

[0011] A further technical solution of this utility model is: the hexagonal prism shell is open at both ends along the axial direction, and the open ends are used to insert a cylindrical battery; the side wall of the hexagonal prism shell is provided with weight reduction holes, which are used to reduce the weight of the shell.

[0012] A further technical solution of this utility model is: the material of each battery protection unit is nylon.

[0013] The beneficial effects of this utility model are as follows: The battery protection structure proposed in this utility model is constructed by splicing and assembling any number of battery protection units, which breaks through the size limitations of traditional battery safety packaging boxes. According to the usage requirements, it can realize the assembly of multiple specifications such as single-layer 3×N or 5×N, solving the problem that the traditional box structure cannot expand the number of batteries installed. At the same time, by using a hexagonal prism shell structure to realize the splicing of honeycomb battery protection structure, based on the characteristics of honeycomb structure, the battery density stored in a unit space is greater than that of the traditional square stacking structure, making efficient use of storage space.

[0014] The battery protection structure, based on hexagonal prisms as the basic unit, boasts high overall structural strength. When the battery is impacted, it effectively absorbs and disperses the impact force, significantly reducing the extent of damage and preventing impact-induced battery failure. The honeycomb structure design ensures uniform stress distribution. Even if the protection structure breaks under excessive pressure, it will first break at the side wall joints of the hexagonal prism shell. In this case, the battery's outer diameter bears the force evenly, avoiding localized stress that could damage the battery. Furthermore, the modular design with multiple units allows for arbitrary combination of packaging units, enabling compatibility with various cargo container types and enhancing practicality.

[0015] Using battery short circuit as the failure criterion, experimental results show that without any protective structure, the failure load of a 3x3 battery pack is 9kN and the failure displacement is 11.145mm. After mounting the battery module with the protective structure based on this design, the failure load increases to 56kN and the failure displacement increases to 46.534mm; while after mounting the battery module with the protective structure based on square stacking, the failure load is 46kN and the failure displacement is 29.776mm. This indicates that the overall module can withstand greater pressure and failure displacement after mounting the battery with this protective structure. Compared with the battery pack without a protective structure, the pressure-bearing capacity is increased by 533.33%, and compared with the square stacking battery pack, the pressure-bearing capacity is increased by 21.73%. The deformation resistance (i.e., failure displacement) is increased by 56.28% compared with the square stacking battery pack. Furthermore, through calculation and analysis, using the battery protective structure of this utility model for battery transportation improves the battery transportation efficiency per unit transportation space by 15.47% compared with the traditional square stacking method. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the assembly of a battery protection structure according to Embodiment 1 of the present invention (the diagram includes a first battery protection unit, a second battery protection unit and two third battery protection units). Figure 2 This is a schematic diagram of the structure of the first battery protection unit in this utility model; Figure 3 This is a schematic diagram of the structure of the second battery protection unit in this utility model; Figure 4 This is a schematic diagram of the third battery protection unit structure in this utility model; Figure 5 This is a schematic diagram of the installation of the cylindrical battery in this utility model; Figure 6 This is a schematic diagram of the battery protection structure after the assembly of a first battery protection unit, a second battery protection unit, and two third battery protection units in Embodiment 1 of this utility model.

[0018] Figure 7 This is a schematic diagram of the assembly of one fourth battery protection unit, two fifth battery protection units, and two first battery protection units in Embodiment 2 of this utility model.

[0019] In the figure: 1. First battery protection unit; 1-1. Weight reduction hole; 2. Second battery protection unit; 2-1. First empty space; 3. Third battery protection unit; 3-1. First protruding position; 3-2. Second empty space; 4. Fourth battery protection unit; 5. Fifth battery protection unit; 6. Battery. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1 One embodiment of the battery protection structure of this utility model is as follows: Figure 1As shown, this embodiment provides a battery protection structure with a single-layer 3×N mounting position for safe transportation and protection of cylindrical batteries.

[0022] like Figure 1 As shown, the battery protection structure includes multiple battery protection units. Each battery protection unit includes at least one hexagonal prism shell. The hexagonal prism shell has a hexagonal prism shape and a cylindrical cavity inside. The cavity of one hexagonal prism shell serves as a mounting position for a cylindrical battery. The dimensions of the cavity of the hexagonal prism shell are adapted to the cylindrical battery: the cavity diameter is the same as the battery diameter, and the axial length is consistent, ensuring that the battery can be fully inserted into the cavity with the hexagonal prism shell aligned axially. Multiple, unlimited numbers of battery protection units are seamlessly stacked to form a battery protection structure with the required number of battery mounting positions.

[0023] In this embodiment, the battery protection structure with a single-layer 3×N mounting position includes a first battery protection unit 1, a second battery protection unit 2, and a third battery protection unit 3.

[0024] like Figure 2 As shown, the first battery protection unit 1 is a hexagonal prism shell with openings at both ends along the axial direction for inserting cylindrical batteries. The sidewalls of the hexagonal prism shell have weight-reducing holes 1-1, which are used to reduce the weight of the shell. To ensure structural stability, the weight-reducing holes 1-1 are symmetrically arranged on two opposite surfaces of the shell, and are rectangular holes, with two evenly distributed on the plane.

[0025] like Figure 3 As shown, the second battery protection unit 2 includes five hexagonal prism shells connected in a circumferential arrangement. The five hexagonal prism shells are axially aligned, and the outer prism faces of two adjacent hexagonal prism shells are in contact and fixedly connected, forming a central first gap 2-1 and side gaps. The first gap 2-1 is used to cooperate with the third battery protection unit 3 or the first battery protection unit 1, and its side gaps serve to avoid interference when cooperating with the third battery protection unit 3, ensuring seamless connection.

[0026] like Figure 4 As shown, the third battery protection unit 3 includes nine hexagonal prism shells, stacked in three layers with axial alignment. One hexagonal prism shell is horizontally offset in the middle layer. The outer prism faces of adjacent hexagonal prism shells are in contact and fixedly connected, forming a first protrusion 3-1 on one side and a second vacancy 3-2 on the other side. The first protrusion 3-1 is used to mate with the first vacancy 2-1 of the second battery protection unit 2. The second vacancy 3-2 can mate with either the first battery protection unit 1 or the first protrusion 3-1 of another third battery protection unit 3. Figure 5A schematic diagram of a battery mounting position for inserting battery 6 into the third battery protection unit 3.

[0027] The materials used for each battery protection unit are nylon materials, specifically Nylon 12 Powder material in this embodiment. This material has good high temperature resistance, ultimate compressive strength and low density.

[0028] When a first battery protection unit 1, a second battery protection unit 2, and a third battery protection unit 3 are assembled, they can form a battery protection structure with 15 battery mounting positions in a 3×5 configuration. The assembly configuration of the 3×5 mounting position battery protection structure is as follows: the first protrusion 3-1 of the third battery protection unit 3 is inserted into the first empty position 3-2 of the second battery protection unit 2, and the first battery protection unit 1 is inserted into the second empty position 3-2 of the third battery protection unit 3. The 3×5 mounting position battery protection structure is the smallest assembly unit of a single-layer 3×N mounting position battery protection structure.

[0029] Figure 1 The diagram shows the assembly of a first battery protection unit 1, a second battery protection unit 2, and two third battery protection units 3. After assembly, it is... Figure 6 The structure shown forms a 3×8 configuration with a total of 24 battery mounting positions. Its assembly method is basically the same as the 3×5 configuration, the difference being the inclusion of two third battery protection units 3 in the middle. To achieve... Figure 1 The horizontal expansion shown can be achieved by adding different numbers of third battery protection units 3. The second battery protection unit 2 is placed on the left side, and the first battery protection unit 1 is used to fill the second empty space 3-2 of the third battery protection unit 3 on the far right.

[0030] Depending on the usage requirements, the first battery protection unit 1, the second battery protection unit 2, and the third battery protection unit 3 can be assembled in any two, used individually, or assembled in any number of units. To ensure load-bearing capacity, battery protection units with empty slots are best used in conjunction with the first battery protection unit 1 to fill the gaps. When the axes of each battery protection unit are placed horizontally, they can be assembled horizontally or stacked vertically. When stacked vertically, for example, a 3×N mounting position structure can be stacked on top of a single-layer 3×N mounting position structure to achieve a 6×N mounting position.

[0031] This battery protection structure can be used alone for battery protection and transport, or it can be used in conjunction with an outer packaging such as a housing. When used with a housing, it can be flexibly assembled according to the housing size. In use, the battery is placed horizontally along the axis of the transport battery using this battery protection structure.

[0032] In this embodiment, taking a transport battery with dimensions of 18mm × 65mm as an example, the opposite side dimension of the hexagonal prism shell in the protective structure is 20mm, the inner diameter of the hexagonal prism shell is 18mm, and the minimum wall thickness between two adjacent battery mounting positions is 1mm. The weight reduction hole 1-1 has dimensions of 25mm × 8mm, and the distance between two weight reduction holes on the same side is 8mm.

[0033] Example 2 One embodiment of the battery protection structure of this utility model is as follows: Figure 7 As shown, this embodiment provides a battery protection structure with a single-layer 5×N mounting position for the safe transportation and protection of cylindrical batteries.

[0034] like Figure 7 As shown, the battery protection structure includes multiple battery protection units. Each battery protection unit includes at least one hexagonal prism shell. The hexagonal prism shell has a hexagonal prism shape and a cylindrical cavity inside. The cavity of one hexagonal prism shell serves as a mounting position for a cylindrical battery. The dimensions of the cavity of the hexagonal prism shell are adapted to the cylindrical battery, and the mounting axis of the battery is aligned with the axis of the hexagonal prism shell. Multiple battery protection units of any number and type can be seamlessly stacked to form a battery protection structure with any number of battery mounting positions.

[0035] In this embodiment, the battery protection structure with a single-layer 5×N mounting position includes a first battery protection unit 1, a fourth battery protection unit 4, and a fifth battery protection unit 5.

[0036] The structure of the first battery protection unit 1 is the same as that of the first battery protection unit 1 in Embodiment 1, which is a hexagonal prism shell.

[0037] The fourth battery protection unit 4 includes eight hexagonal prism shells. The fourth battery protection unit 4 is an extension of the second battery protection unit 2 in embodiment 1. The two middle hexagonal prism shells in the fourth battery protection unit 4 share a common structure to form an upper and lower layer of the second battery protection unit stacked structure, so that two first vacancy 2-1 are formed in the fourth battery protection unit 4.

[0038] The fifth battery protection unit 5 includes fifteen hexagonal prism shells. The fifth battery protection unit 5 is an extension of the third battery protection unit 3. The three middle hexagonal prism shells of the fifth battery protection unit 5 share a common structure to form an upper and lower stacked structure of the third battery protection unit, so that the fifth battery protection unit 5 forms two first protrusions 3-1 and two second vacancy positions 3-2.

[0039] When two first battery protection units 1, one fourth battery protection unit 4, and one fifth battery protection unit 5 are assembled, they form a battery protection structure with a 5×5 mounting position. The two first protrusions 3-1 of the fifth battery protection unit 5 are inserted into the two first vacancy positions 2-1 of the fourth battery protection unit 4, and the two first battery protection units 1 are inserted into the two second vacancy positions 3-2 of the fifth battery protection unit 5. The 5×5 mounting position battery protection structure is the smallest assembly unit of a single-layer 5×N mounting position battery protection structure.

[0040] Nylon material is used for each battery protection unit.

[0041] Figure 7 The diagram shows the assembly of two first battery protection units 1, one fourth battery protection unit 4, and two fifth battery protection units 5, forming a 5×8 configuration with a total of 40 battery mounting positions. The assembly method is basically the same as the 5×5 configuration, the difference being the inclusion of two fifth battery protection units 5 in the middle. To achieve... Figure 7 The horizontal expansion shown can be achieved by adding different numbers of fifth battery protection units 5. The fourth battery protection unit 4 is placed on the left side, and the first battery protection unit 1 is used to fill the second vacancy 3-2 of the fifth battery protection unit 5 on the far right.

[0042] Depending on the usage requirements, the first battery protection unit 1, the fourth battery protection unit 4, and the fifth battery protection unit 5 can be assembled in any two, used individually, or assembled in any number of units. To ensure load-bearing capacity, battery protection units with empty slots are best used in conjunction with the first battery protection unit 1 to fill the gaps. When the axes of each battery protection unit are placed horizontally, they can be assembled by expanding horizontally to both sides or by stacking vertically. When stacking vertically, for example, a 5×N mounting position structure can be stacked on top of a single-layer 5×N mounting position structure, or a 3×N mounting position structure of Embodiment 1 can be stacked on top of that.

[0043] This battery protection structure can be used alone for battery transport, or it can be used with a housing. When used with a housing, it can be flexibly assembled according to the housing size. In use, the battery is placed horizontally along the axis of the protective structure.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery protection structure, characterized in that, include: Multiple battery protection units, each including at least one hexagonal prism shell, the hexagonal prism shell being hexagonal in shape and having a cylindrical cavity inside, the cavity of one hexagonal prism shell serving as a mounting position for a cylindrical battery, the cavity size being adapted to the cylindrical battery, and the mounting axis of the battery being consistent with the axis of the hexagonal prism shell; multiple battery protection units are seamlessly spliced ​​and stacked to form a battery protection structure with the required number of battery mounting positions.

2. The battery protection structure according to claim 1, characterized in that, The plurality of battery protection units include a first battery protection unit, a second battery protection unit, and a third battery protection unit. A first battery protection unit, a second battery protection unit, and a third battery protection unit together form a battery protection structure with a 3×5 mounting position.

3. The battery protection structure according to claim 2, characterized in that, The first battery protection unit is a hexagonal prism shell; the second battery protection unit includes five hexagonal prism shells connected in a ring, the five hexagonal prism shells are axially aligned, and the outer prism surfaces of two adjacent hexagonal prism shells are in contact and fixedly connected, forming a central first void and a side gap; the third battery protection unit includes nine hexagonal prism shells, the nine hexagonal prism shells are stacked in three layers, axially aligned, with one hexagonal prism shell offset in the middle layer, and the outer prism surfaces of two adjacent hexagonal prism shells are in contact and fixedly connected, forming a first protrusion on one side and a second void on the other side; The battery protection structure of the 3×5 mounting position is configured such that the first protruding position is inserted into the first empty position, and the first battery protection unit is inserted into the second empty position.

4. The battery protection structure according to claim 3, characterized in that, The first battery protection unit, the second battery protection unit, and the third battery protection unit can be assembled in any two, used individually, or assembled in any number of units; when the axis of each battery protection unit is placed horizontally, they can be assembled by horizontal expansion or by vertical stacking.

5. The battery protection structure according to claim 3, characterized in that, The plurality of battery protection units also include a fourth battery protection unit and a fifth battery protection unit. The fourth battery protection unit includes eight hexagonal prism shells and is an extension of the second battery protection unit. The two middle hexagonal prism shells of the fourth battery protection unit share a common structure to form an upper and lower stacked structure of the second battery protection unit, and form two first vacancy positions. The fifth battery protection unit includes fifteen hexagonal prism shells and is an extension of the third battery protection unit. The three middle hexagonal prism shells of the fifth battery protection unit share a common structure to form an upper and lower stacked structure of the third battery protection unit, and form two first protrusion positions and two second vacancy positions. Two first battery protection units, one fourth battery protection unit, and one fifth battery protection unit constitute a battery protection structure with a 5×5 mounting position. The two first protruding positions are inserted into the two first empty positions, and the two first battery protection units are inserted into the two second empty positions.

6. The battery protection structure according to claim 5, characterized in that, The first battery protection unit, the fourth battery protection unit, and the fifth battery protection unit can be assembled in any two, used individually, or assembled in any number of units; when the axis of each battery protection unit is placed horizontally, they can be assembled by horizontal expansion or by vertical stacking.

7. The battery protection structure according to claim 1, characterized in that, The hexagonal prism shell is open at both ends along the axial direction, and the open ends are used to insert a cylindrical battery; the side wall of the hexagonal prism shell is provided with weight reduction holes, which are used to reduce the weight of the shell.

8. The battery protection structure according to claim 1, characterized in that, Nylon material is used for each battery protection unit.

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