Hard shell and battery cell module

Abstract

The utility model provides a hard shell, which comprises a main body provided with a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially arranged in a surrounding manner; the connecting strips are arranged on the first side edge and the third side edge at equal intervals; the reinforcing rib and the protrusion are arranged on the body, and the length of the reinforcing rib is larger than the distance between the two farthest connecting pieces on the first side edge in the length direction of the body. The utility model also provides a battery cell module which comprises a plurality of mutually stacked battery cells and two hard shells, and the two hard shells are buckled on the plurality of stacked battery cells. According to the hard shell and the battery cell module provided by the invention, the reinforcing rib is arranged on the main body in the protruding manner, and the length of the reinforcing rib is ensured to be greater than the distance between the two farthest connecting pieces on the first side edge, so that the impact resistance of the hard shell is effectively improved. The protruding design of the reinforcing ribs provides additional structural strength, so that impact force can be dispersed along the reinforcing ribs when impact occurs, and pressure concentration on a single point is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a hard shell and a battery cell module. Background Art

[0002] A cell hard shell is a structure used to surround and protect an electrochemical cell, commonly found in rechargeable batteries such as lithium-ion batteries. Its main function is to provide physical protection for the cell, prevent damage caused by external impact, pressure or other mechanical stress, while maintaining the structural integrity and stability of the cell during long-term use.

[0003] Existing battery cell hard shells are usually made of strong materials such as metal or hard plastic to provide good impact and pressure resistance. The design of these hard shells focuses on dispersing external pressure and impact through their solid structure to protect the internal battery cells. In some designs, reinforcing ribs or raised parts may also be included to enhance the ability to resist bending.

[0004] However, the arrangement of the reinforcing ribs on the existing battery cell hard shell is generally limited and not comprehensive enough. When an external impact occurs, the portion where the reinforcing ribs are not arranged will often be impacted, thereby affecting the performance of the internal battery cell. Utility Model Content

[0005] In view of this, it is necessary to provide a hard shell and a battery cell module with good impact resistance and bending resistance to solve the above problems.

[0006] An embodiment of the present application provides a hard case, comprising:

[0007] A main body having a first side edge, a second side edge, a third side edge and a fourth side edge arranged in sequence;

[0008] A plurality of connecting strips are arranged at equal intervals on the first side and the third side;

[0009] A reinforcing rib is protruded and arranged on the main body, and along the length direction of the main body, the length of the reinforcing rib is greater than the distance between the two farthest connecting strips on the first side.

[0010] In at least one embodiment of the present application, the plurality of connecting strips disposed on the first side edge and the plurality of connecting strips disposed on the third side edge are disposed opposite to each other.

[0011] In at least one embodiment of the present application, the reinforcing ribs include a first reinforcing rib, a second reinforcing rib and a third reinforcing rib;

[0012] The first reinforcing rib and the second reinforcing rib are arranged on the main body in a manner that they intersect each other, and the first reinforcing rib and the second reinforcing rib have an intersection point, and the third reinforcing rib is arranged on the main body along a width direction of the main body and passes through the intersection point.

[0013] In at least one embodiment of the present application, the shortest distance between the second side and the connecting strip is defined as A, the first reinforcing rib is defined as having endpoints close to the first side and the second side, and the distance from the endpoint to the second side is defined as B;

[0014] Among them, A≥2B.

[0015] In at least one embodiment of the present application, along the width direction of the main body, the lengths of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are equal.

[0016] In at least one embodiment of the present application, the main body includes a first surface and a second surface that are arranged opposite to each other;

[0017] The reinforcing rib protrusion is arranged on the first surface, and the second surface is attached to the battery core;

[0018] Wherein, the reinforcing rib is recessed on the second surface to form a compression-resistant groove for resisting impact force.

[0019] In at least one embodiment of the present application, the hard shell further includes an anti-folding member, one end of the anti-folding member extends outward from the second side edge.

[0020] In at least one embodiment of the present application, the anti-bending component is arranged perpendicular to the main body.

[0021] In at least one embodiment of the present application, there are multiple anti-bending members, and the multiple anti-bending members are arranged on at least one of the first side, the second side, the third side, and the fourth side.

[0022] A battery cell module comprises a plurality of battery cells stacked on each other and two hard shells as described above, wherein the two hard shells are buckled on the plurality of stacked battery cells.

[0023] The hard shell and battery module provided above effectively improve the impact resistance of the hard shell by protruding reinforcement ribs on the main body and ensuring that the length of the reinforcement ribs is greater than the distance between the two farthest connecting strips on the first side. The protruding design of the reinforcement ribs provides additional structural strength, so that when impacted, the impact force can be dispersed along the reinforcement ribs, reducing the pressure concentration on a single point. This dispersion effect reduces the risk of internal damage caused by impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a schematic diagram of the three-dimensional structure of the hard shell in the first embodiment of the present application from a first viewing angle.

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the hard shell in the first embodiment of the present application from a second viewing angle.

[0026] Figure 3 This is a front view of the hard shell in Example 1 of the present application.

[0027] Figure 4 for Figure 1 An enlarged view of the hard shell T is shown.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the telecommunication module in the second embodiment of the present application.

[0029] Main component symbols

[0030] 100, hard shell; 10, main body; 10a, first surface; 10b, second surface; 10c, compression groove; 101, first side; 102, second side; 103, third side; 104, fourth side; 20, connecting strip; 30, reinforcing rib; 30a, intersection; 31, first reinforcing rib; 31a, end point; 32, second reinforcing rib; 33, third reinforcing rib; 40, anti-bending part; 200, battery cell module; 210, battery cell. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0032] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0033] An embodiment of the present application provides a hard case, comprising:

[0034] A main body having a first side edge, a second side edge, a third side edge and a fourth side edge arranged in sequence;

[0035] A plurality of connecting strips are arranged at equal intervals on the first side and the third side;

[0036] A reinforcing rib is protruded and arranged on the main body, and along the length direction of the main body, the length of the reinforcing rib is greater than the distance between the two farthest connecting strips on the first side.

[0037] An embodiment of the present application further provides a battery cell module, comprising a plurality of battery cells stacked on each other and two hard shells as described above, wherein the two hard shells are buckled onto the plurality of stacked battery cells.

[0038] The hard shell and battery module provided above effectively improve the impact resistance of the hard shell by protruding reinforcement ribs on the main body and ensuring that the length of the reinforcement ribs is greater than the distance between the two farthest connecting strips on the first side. The protruding design of the reinforcement ribs provides additional structural strength, so that when impacted, the impact force can be dispersed along the reinforcement ribs, reducing the pressure concentration on a single point. This dispersion effect reduces the risk of internal damage caused by impact.

[0039] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Embodiment 1

[0041] See also Figure 1-Figure 4 , this embodiment 1 provides a hard shell 100, including:

[0042] The main body 10 has a first side 101, a second side 102, a third side 103 and a fourth side 104 which are arranged in sequence;

[0043] A plurality of connecting strips 20 are arranged at equal intervals on the first side 101 and the third side 103;

[0044] The reinforcing rib 30 is protrudingly disposed on the main body 10 , and along the length direction of the main body 10 , the length of the reinforcing rib 30 is greater than the distance between the two farthest connecting strips 20 on the first side 101 .

[0045] It should be noted that the provision of the reinforcing ribs 30 significantly improves the structural strength and rigidity of the hard shell 100. The raised reinforcing ribs 30 extend along the length direction of the main body 10, so that the hard shell 100 can better withstand external forces, such as impact or pressure, and reduce damage caused by these external forces.

[0046] Furthermore, the length of the reinforcing rib 30 exceeds the distance between the two farthest connecting strips 20 on the first side 101 , which helps to evenly distribute stress on the entire hard shell 100 and enhance the ability of the hard shell 100 to resist bending and twisting.

[0047] Furthermore, by providing the raised reinforcing ribs 30 on the hard shell 100, the durability and stability of the hard shell 100 can be enhanced without significantly increasing the weight. When subjected to external impact, the reinforcing ribs 30 can help disperse the impact force, reduce the pressure concentration on a certain part of the hard shell 100, and thus reduce the risk of damage.

[0048] Furthermore, the hard case 100 is not only suitable for protecting batteries or other electronic components, but can also be widely used in packaging or shells of various products that require additional protection and reinforcement. The multiple connecting strips 20 arranged at equal intervals on the first side 101 and the third side 103 can provide additional structural support, which helps to maintain the overall shape and integrity of the hard case 100.

[0049] In summary, the hard shell 100 design in this embodiment provides an effective solution for achieving a balance between enhanced durability and maintained lightness through the application of reinforcing ribs 30, and is particularly suitable for application scenarios that require high protection and long-term durability.

[0050] In one embodiment, the plurality of connecting strips 20 disposed on the first side 101 and the plurality of connecting strips 20 disposed on the third side 103 are disposed opposite to each other.

[0051] It should be noted that by ensuring that the connecting strips 20 on the first side 101 and the third side 103 are arranged opposite each other, the overall structural stability of the hard shell 100 is enhanced. This symmetrical arrangement helps to evenly distribute any force acting on the hard shell 100, thereby reducing deformation or damage caused by uneven pressure distribution. Further, the connecting strips 20 arranged opposite each other can provide a more solid and stable connection point, especially when the hard shell 100 is used to fix or connect other components. This helps to ensure that the connection between the components is not easy to loosen or break during use.

[0052] Furthermore, when dealing with loads in the vertical or horizontal direction, the connecting strips 20 arranged opposite to each other can more effectively disperse the load pressure and improve the bearing capacity of the hard shell 100. This design also improves the overall performance of the hard shell 100, enabling it to provide better protection and support in a variety of application scenarios.

[0053] In a specific embodiment, the reinforcing rib 30 includes a first reinforcing rib 31, a second reinforcing rib 32 and a third reinforcing rib 33; the first reinforcing rib 31 and the second reinforcing rib 32 are arranged on the main body 10 in an intersecting manner, and the first reinforcing rib 31 and the second reinforcing rib 32 have an intersection 30a, and the third reinforcing rib 33 is arranged on the main body 10 along the width direction of the main body 10 through the intersection 30a.

[0054] It should be noted that the first reinforcing ribs 31 and the second reinforcing ribs 32 are arranged crosswise to increase the overall structural strength of the hard shell 100. The existence of the intersection 30a further improves the stability of the hard shell 100 in this area, enabling it to more effectively withstand and disperse the external force. The cross reinforcing ribs 30 can disperse stress in a wider area, especially near the intersection 30a. This helps to reduce local damage or deformation caused by concentrated stress.

[0055] Furthermore, the third reinforcing ribs 33 are arranged along the width direction of the main body 10 and pass through the intersection 30a. Such a layout enables the hard shell 100 to resist bending and twisting in both the length and width directions, providing an all-round reinforcement effect.

[0056] Furthermore, when impacted, the design of the cross-reinforcement ribs 30 can effectively absorb and disperse the impact force, reducing the potential damage to the battery cell 210 or other sensitive components. The configuration of the reinforcement ribs 30 allows the hard shell 100 to be adjusted according to specific application requirements, such as increasing or decreasing the number of reinforcement ribs 30 and changing their arrangement to meet different mechanical performance requirements.

[0057] In summary, the design of the above-mentioned reinforcing ribs 30 not only improves the overall structural strength and stability of the hard shell 100, but also enhances its impact resistance and bending resistance in multiple directions, making it a widely applicable and efficient solution.

[0058] In a specific embodiment, the shortest distance between the second side 102 and the connecting strip 20 is defined as A, the first reinforcing rib 31 is defined as having an end point 31a close to the first side 101 and the second side 102, and the distance from the end point 31a to the second side 102 is defined as B;

[0059] Among them, A≥2B.

[0060] It should be noted that by ensuring A ≥ 2B, it is ensured that there is enough space between the connecting strip 20 and the reinforcing rib 30, so that the force on the entire hard shell 100 can be more evenly dispersed. Such a layout helps to reduce the stress concentration caused by the concentration of force in a smaller area. This size relationship helps to enhance the overall structural stability of the hard shell 100. The precise definition of the position and distance of the reinforcing rib 30 can ensure that the hard shell 100 maintains its shape and integrity when subjected to external forces.

[0061] Furthermore, through proper dimensioning, the hard shell 100 can more effectively resist bending and twisting forces, which is very important for applications that may encounter complex stress conditions during use.

[0062] In a specific embodiment, along the width direction of the main body 10 , the lengths of the first reinforcing rib 31 , the second reinforcing rib 32 and the third reinforcing rib 33 are equal.

[0063] It should be noted that making the lengths of the three reinforcing ribs 30 equal helps to evenly distribute the stress on the hard shell 100. This uniformly distributed structural design can effectively reduce local damage or deformation caused by stress concentration. The reinforcing ribs 30 of equal length ensure the overall performance consistency of the hard shell 100 in the width direction, which helps to improve its stability and durability when facing various external forces (such as impact, pressure or distortion).

[0064] Furthermore, the uniform length of the reinforcing ribs 30 simplifies the manufacturing process of the hard shell 100 and reduces the production cost. This design can easily adopt a standardized production process to improve production efficiency. And from a visual and design perspective, the reinforcing ribs 30 of equal length provide a consistent and symmetrical appearance.

[0065] In a specific embodiment, the main body 10 includes a first surface 10a and a second surface 10b that are arranged opposite to each other;

[0066] The reinforcing rib 30 is protrudingly disposed on the first surface 10a, and the second surface 10b is attached to the battery core 210;

[0067] The reinforcing rib 30 is recessed on the second surface 10b to form a compression groove 10c for resisting impact force.

[0068] It should be noted that the compression grooves 10c on the second surface 10b form a concave structure, which helps to absorb and disperse impact force. When the hard shell 100 is subjected to external impact, these grooves can reduce the force directly acting on the battery cell 210, thereby improving the protection effect of the battery cell 210.

[0069] Furthermore, the raised design of the reinforcing ribs 30 on the first side 10a enhances the overall strength and rigidity of the hard shell 100, while the compression grooves 10c on the second side 10b provide additional structural support without significantly increasing the weight.

[0070] Furthermore, the second surface 10 b is designed to directly fit the battery cell 210 , which means that the hard shell 100 can closely match the shape and size of the battery cell 210 , providing better protection and support while reducing space waste.

[0071] Furthermore, by adopting different structural designs on the first side 10a and the second side 10b, the hard case 100 not only performs well in terms of impact resistance, but also provides additional functionality, such as enhanced mechanical stability and improved thermal management characteristics. This design allows the hard case 100 to be more easily assembled and fixed to the battery cell 210, ensuring high efficiency and accuracy during the production and assembly process.

[0072] In summary, the design of the hard shell 100 not only improves the protection capability of the battery cell 210 but also enhances the overall structural performance and functionality of the hard shell 100 by using raised reinforcing ribs 30 and recessed compression grooves 10c on different surfaces.

[0073] In a specific embodiment, the hard shell 100 further includes an anti-folding member 40 , and one end of the anti-folding member 40 extends outward from the second side 102 .

[0074] It should be noted that the introduction of the anti-bending member 40 provides additional support for the hard shell 100, which helps to resist bending or breaking caused by external forces. This is particularly important in protecting internal sensitive components (such as the battery cell 210) from mechanical damage.

[0075] Furthermore, the addition of the anti-bend component 40 can increase the overall rigidity of the hard shell 100, making it more stable when subjected to forces in different directions and reducing deformation caused by external forces.

[0076] Furthermore, the anti-bend member 40 helps to evenly distribute the load and stress on the hard shell 100, especially when the hard shell 100 is subjected to lateral force or torque. In addition to increasing the anti-bend ability of the hard shell 100, the anti-bend member 40 can also provide additional functionality according to specific design and application requirements, such as serving as a mounting or fixing point to improve the practicality of the hard shell 100.

[0077] In a specific embodiment, the anti-bending member 40 is a metal folded edge. Preferably, the anti-bending member 40 is integrally formed with the main body 10 .

[0078] It should be noted that the vertical arrangement of the anti-bending member 40 helps to enhance the stability of the hard shell 100 in the longitudinal direction, especially in resisting longitudinal bending or pressure. This arrangement ensures that the hard shell 100 can evenly withstand the load along its length.

[0079] Furthermore, the vertically arranged anti-bending members 40 effectively improve the overall structural strength of the hard shell 100. When subjected to side impact or pressure, these anti-bending members 40 can effectively disperse and absorb the force and reduce damage. Moreover, by arranging the anti-bending members 40 perpendicular to the main body 10, stress can be more evenly distributed, reducing local deformation or damage caused by stress concentration.

[0080] Furthermore, the vertically arranged anti-bending member 40 can provide additional support points, which helps improve the load bearing capacity of the hard case 100, especially when carrying heavy objects or operating under extreme conditions. Moreover, this arrangement not only improves the anti-bending capacity of the hard case 100, but also can provide support for other functions as needed, such as serving as a mounting point or a connection point, thereby improving the practicality and adaptability of the hard case 100.

[0081] In a specific embodiment, there are multiple anti-bending members 40 , and the multiple anti-bending members 40 are disposed on at least one of the first side 101 , the second side 102 , the third side 103 , and the fourth side 104 .

[0082] It should be noted that the multiple anti-bending members 40 provided on each side of the hard shell 100 can provide reinforcement support in different directions, thereby comprehensively improving the overall structural stability and durability of the hard shell 100. The distribution of the multiple anti-bending members 40 helps to evenly disperse the stress caused by external forces (such as impact, pressure), and reduce local damage or deformation caused by stress concentration.

[0083] The hard shell 100 and the battery module 200 provided above effectively improve the impact resistance of the hard shell 100 by protruding the reinforcing ribs 30 on the main body 10 and ensuring that the length of the reinforcing ribs 30 is greater than the distance between the two farthest connecting strips 20 on the first side 101. The protruding design of the reinforcing ribs 30 provides additional structural strength, so that when impacted, the impact force can be dispersed along the reinforcing ribs 30, reducing the pressure concentration on a single point. This dispersion effect reduces the risk of internal damage caused by impact.

[0084] Embodiment 2

[0085] The second embodiment provides a battery cell module 200 , including a plurality of battery cells 210 stacked on each other and two hard shells 100 as described in the first embodiment, wherein the two hard shells 100 are buckled onto the plurality of stacked battery cells 210 .

[0086] It should be noted that the hard shell 100 in the first embodiment is applied to the battery field to increase the strength of the battery module 200 .

[0087] It should be noted that the battery cell module 200 in the second embodiment includes the hard shell 100 in the first embodiment. Therefore, the second embodiment includes all the beneficial effects of the hard shell 100 in the first embodiment, which will not be repeated here.

[0088] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A hard shell, characterized in that: include: A main body having a first side edge, a second side edge, a third side edge and a fourth side edge arranged in sequence; A plurality of connecting strips are arranged at equal intervals on the first side and the third side; A reinforcing rib is protruded and arranged on the main body, and along the length direction of the main body, the length of the reinforcing rib is greater than the distance between the two farthest connecting strips on the first side.

2. The hard case according to claim 1, characterized in that The plurality of connecting strips disposed on the first side edge and the plurality of connecting strips disposed on the third side edge are arranged opposite to each other.

3. The hard case according to claim 2, characterized in that The reinforcing ribs include a first reinforcing rib, a second reinforcing rib and a third reinforcing rib; The first reinforcing rib and the second reinforcing rib are arranged on the main body in a manner that they intersect each other, and the first reinforcing rib and the second reinforcing rib have an intersection point, and the third reinforcing rib is arranged on the main body along a width direction of the main body and passes through the intersection point.

4. The hard case according to claim 3, characterized in that The shortest distance between the second side and the connecting strip is defined as A, the first reinforcing rib has endpoints close to the first side and the second side, and the distance from the endpoint to the second side is defined as B; Among them, A≥2B.

5. The hard case according to claim 3, characterized in that Along the width direction of the main body, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are of equal length.

6. The hard case according to claim 1, characterized in that The main body comprises a first surface and a second surface which are arranged opposite to each other; The reinforcing rib protrusion is arranged on the first surface, and the second surface is attached to the battery core; Wherein, the reinforcing rib is recessed on the second surface to form a compression-resistant groove for resisting impact force.

7. The hard case according to claim 1, characterized in that The hard shell further includes an anti-folding member, one end of which extends outward from the second side edge.

8. The hard case according to claim 7, characterized in that The anti-bending component is arranged perpendicular to the main body.

9. The hard case according to claim 7, characterized in that There are a plurality of anti-bending members, and the plurality of anti-bending members are arranged on at least one of the first side edge, the second side edge, the third side edge, and the fourth side edge.

10. A battery cell module, characterized in that: It comprises a plurality of battery cells stacked on each other and two hard shells as described in any one of claims 1 to 9, wherein the two hard shells are buckled on the plurality of stacked battery cells.

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