Cylindrical lithium battery module structure

Abstract

According to the scheme, the cylindrical lithium battery module structure comprises a first shell and a second shell, the first shell is provided with a positioning assembly, and the positioning assembly forms a first containing space; the second shell is provided with a limiting assembly, the limiting assembly forms a second containing space, and the first shell is detachably connected with the second shell; when the first shell is connected to the second shell, a mounting cavity is defined by the first accommodating space and the second accommodating space; the battery cell module is arranged in the mounting cavity, and the positioning assembly and the limiting assembly are arranged on the periphery of the battery cell module in a surrounding mode so that the battery cell module can be limited in the mounting cavity. According to the scheme, the heat dissipation effect is improved, the disassembly convenience is improved, and the installation stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage devices, and in particular to a cylindrical lithium battery module structure. Background Art

[0002] At present, traditional cylindrical lithium battery modules usually adopt a single shell design, and the battery cells are directly placed in the shell without special positioning or limiting devices. Such a design may cause the battery to move under vibration or impact, affecting the stability and safety of the battery. Summary of the invention

[0003] The main purpose of the present invention is to propose a cylindrical lithium battery module structure, aiming to improve the heat dissipation effect, facilitate disassembly and improve installation stability.

[0004] To achieve the above object, the present invention provides a cylindrical lithium battery module structure, comprising:

[0005] A first shell, wherein the first shell is provided with a positioning assembly, and the positioning assembly forms a first accommodating space;

[0006] A second shell, wherein the second shell is provided with a limiting assembly, the limiting assembly forms a second accommodating space, and the first shell is detachably connected to the second shell;

[0007] When the first shell is connected to the second shell, the first accommodating space and the second accommodating space define a mounting cavity;

[0008] A battery cell module is arranged in the installation cavity, and the positioning component and the limiting component are arranged around the outer circumference of the battery cell module to limit the battery cell module in the installation cavity.

[0009] In one embodiment, the first housing comprises a first bottom plate, a first side wall and a second side wall disposed on opposite sides of the first bottom plate along a first direction, and a third side wall and a fourth side wall disposed on opposite sides of the first bottom plate along a second direction, wherein the first direction intersects with the second direction;

[0010] The positioning assembly includes a first positioning member, a second positioning member and a third positioning member arranged in the first shell; the first positioning member is arranged at the connection between the first side wall and the third side wall, the second positioning member is arranged at the connection between the second side wall and the third side wall, the third positioning member is opposite to the third side wall and is arranged at intervals, and the first positioning member, the second positioning member and the third positioning member enclose the first accommodating space.

[0011] In one embodiment, the first bottom plate includes a first bottom wall and a plurality of first ribs, and the plurality of first ribs are intersected in pairs and arranged on a side of the first bottom wall facing the first accommodating space.

[0012] In one embodiment, the second housing has a second bottom plate, a fifth side wall and a sixth side wall disposed on opposite sides of the second bottom plate along the first direction, and a seventh side wall and an eighth side wall disposed on opposite sides of the second bottom plate along the second direction;

[0013] The limiting assembly includes a first limiting member, a second limiting member and a third limiting member arranged in the second shell; the first limiting member is arranged at the connection between the fifth side wall and the seventh side wall, the second limiting member is arranged at the connection between the fifth side wall and the seventh side wall, the third limiting member is opposite to the eighth side wall and is arranged at intervals, and the first limiting member, the second limiting member and the third limiting member enclose the second accommodating space.

[0014] In one embodiment, the second bottom plate includes a second bottom wall and a plurality of second ribs, and the plurality of second ribs are intersected in pairs and arranged on a side of the second bottom wall facing the second accommodating space.

[0015] In one embodiment, the first positioning member includes a first enclosure and a plurality of first ribs, the two ends of the first enclosure are respectively connected to the first side wall and the third side wall, the first enclosure, the first side wall and the third side wall are enclosed to form a first installation space, and the plurality of first ribs are intersected in pairs and arranged in the first installation space;

[0016] The second positioning member includes a second enclosing plate and a plurality of second ribs, the two ends of the second enclosing plate are respectively connected to the second side wall and the third side wall, the second enclosing plate, the second side wall and the third side wall are enclosed to form a second installation space, and the plurality of second ribs are intersected in pairs and arranged in the second installation space;

[0017] The third positioning member includes a third enclosure and a plurality of third ribs. The two ends of the third enclosure are respectively connected to the first side wall and the second side wall. The third enclosure, the first side wall and the second side wall are combined to form a third installation space. The plurality of third ribs are intersected in pairs and arranged in the third installation space.

[0018] In one embodiment, the first position-limiting member includes a fourth enclosure plate and a plurality of fourth ribs, the two ends of the fourth enclosure plate are respectively connected to the fifth side wall and the seventh side wall, the fourth enclosure plate and the fifth side wall and the seventh side wall enclose a third installation space, and the plurality of fourth ribs are intersected in pairs and arranged in the third installation space;

[0019] The second limiting member includes a fifth enclosing plate and a plurality of fifth ribs, the two ends of the fifth enclosing plate are respectively connected to the fifth side wall and the seventh side wall, the fifth enclosing plate, the fifth side wall and the seventh side wall enclose a fourth installation space, and the plurality of fifth ribs are intersected in pairs and arranged in the fourth installation space;

[0020] The third limiting member includes a sixth enclosure plate and a plurality of sixth ribs, the two ends of the sixth enclosure plate are respectively connected to the fifth side wall and the sixth side wall, the fifth enclosure plate, the fifth side wall and the sixth side wall enclose a fifth installation space, and the plurality of sixth ribs are intersected in pairs and arranged in the fifth installation space.

[0021] In one embodiment, the cylindrical lithium battery module structure also includes a plurality of protection pads, wherein a plurality of the protection pads are arranged between the first positioning member, the second positioning member and the third positioning member, and a plurality of the protection pads are arranged between the first limiting member, the second limiting member and the third limiting member.

[0022] In one embodiment, the cylindrical lithium battery module structure also includes a limiting assembly, which includes a locking piece provided on the first shell and a matching piece provided on the second shell, the matching piece is provided with a slot, and the locking piece is inserted into the slot so that the first shell and the second shell are buckled.

[0023] In one embodiment, the battery cell module includes at least two cylindrical battery cells, and the cylindrical lithium battery module structure further includes a protective film, and the protective film covers at least two of the battery cells.

[0024] The present invention discloses a cylindrical lithium battery module structure, which includes a first shell with a positioning assembly, which can form a first accommodating space, and a second shell with a limiting assembly, which can form a second accommodating space. The first shell and the second shell can be detachably connected. The installation cavity is a space for accommodating a battery cell, which is jointly defined by the first accommodating space and the second accommodating space. The battery cell module is installed in the above-mentioned installation cavity and fixed by a positioning assembly and a limiting assembly. The positioning assembly and the limiting assembly ensure that the battery cell module will not be displaced during use, and problems such as poor contact or short circuit caused by vibration are avoided. The detachable connection design of the first shell and the second shell makes the assembly and disassembly of the battery module easier, and is convenient for maintenance and replacement. The positioning assembly and the limiting assembly ensure that the battery cell module will not be displaced during use, and problems such as poor contact or short circuit caused by vibration are avoided. And the contact area between the battery cell and the shell is increased, thereby increasing the heat exchange area, which helps to quickly transfer heat and reduce the risk of overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an embodiment of a cylindrical lithium battery module structure provided by the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of structural decomposition;

[0028] Figure 3 for Figure 1 Schematic diagram of some structures;

[0029] Figure 4 A schematic structural diagram of an embodiment of a first housing provided by the present invention;

[0030] Figure 5 A schematic structural diagram of an embodiment of a second housing provided by the present invention;

[0031] Figure 6 A schematic structural diagram of an embodiment of a battery cell module provided by the present invention.

[0032] Description of Figure Numbers:

[0033] 10. First housing; 11. Positioning assembly; 111. First positioning member; 1111. First enclosure; 1112. First rib; 112. Second positioning member; 1121. Second enclosure; 1122. Second rib; 113. Third positioning member; 1131. Third enclosure; 1132. Third rib; 12. First accommodating space; 13. First bottom plate; 131. First bottom wall; 132. First rib; 14. First side wall; 15. Second side wall; 16. Third side wall; 17. Fourth side wall; 20. Second housing; 21. Limiting assembly; 211. First limiting member Component; 2111, fourth enclosure; 2112, fourth rib; 212, second limiter; 2121, fifth enclosure; 2122, fifth rib; 213, third limiter; 2131, sixth enclosure; 2132, sixth rib; 22, second accommodating space; 23, second bottom plate; 231, second bottom wall; 232, second rib; 24, fifth side wall; 25, sixth side wall; 26, seventh side wall; 27, eighth side wall; 30, battery cell module; 31, battery cell; 40, protective pad; 50, limiter assembly; 51, snap-fit ​​component; 52, matching component; 53, slot.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention provides a cylindrical lithium battery module structure.

[0039] Reference Figure 1 to Figure 6 In an embodiment of the present invention, a cylindrical lithium battery module structure includes:

[0040] A first housing 10, wherein the first housing 10 is provided with a positioning assembly 11, and the positioning assembly 11 forms a first accommodating space 12;

[0041] A second shell 20, wherein the second shell 20 is provided with a limiting assembly 21, wherein the limiting assembly 21 forms a second accommodating space 22, and the first shell 10 and the second shell 20 are detachably connected;

[0042] When the first housing 10 is connected to the second housing 20, the first accommodating space 12 and the second accommodating space 22 define a mounting cavity;

[0043] The battery cell module 30 is disposed in the installation cavity, and the positioning component 11 and the limiting component 21 are disposed around the outer periphery of the battery cell module 30 to limit the battery cell module 30 in the installation cavity.

[0044] The invention application scheme discloses a cylindrical lithium battery module, which forms a complete shell by the cooperation of the first shell 10 and the second shell 20, and fixes the internal battery module 30 by the positioning component 11 and the limiting component 21. The first shell 10 and the second shell 20 are detachably connected to form a closed space for accommodating the battery module 30. The positioning component 11 and the limiting component 21 are respectively arranged on the first shell 10 and the second shell 20, and their function is to ensure that the battery module 30 is accurately placed and fixed in the installation cavity formed by the first accommodating space 12 and the second accommodating space 22. It can ensure that there is enough contact area between the battery module 30 and the first shell 10 and the second shell 20, which is conducive to the heat transfer from the battery to the shell by heat conduction. Reasonable structural design helps to dissipate heat, thereby improving the overall performance and service life of the battery module. Since the first shell 10 and the second shell 20 can be easily connected and separated, the installation and replacement of the battery module 30 becomes simple and quick. Furthermore, by accurately fixing the battery cell module 30 through the positioning component 11 and the limiting component 21, safety problems caused by displacement or vibration of the battery during use can be effectively prevented. This design allows the battery cells to be arranged more compactly, thereby achieving a higher energy density in a limited space. Such a design not only ensures the stability and reliability of the battery module, but also facilitates production and maintenance, and the cylindrical lithium battery module can effectively dissipate heat, thereby ensuring the stable operation and long-term reliability of the battery module. It is understandable that the battery cell module 30 is in close contact with the shell through the positioning component 11 and the limiting component 21, and the shell acts as a heat sink to conduct heat from the battery cell to the first shell 10 and / or the second shell 20, and then dissipates heat from the first shell 10 and / or the second shell 20 to the environment. It is understandable that there are small gaps between the first shell 10 and the second shell 20, which can serve as channels for air flow, facilitate air flow, help dissipate heat through natural convection or forced ventilation, and help heat dissipation through air convection. It is understandable that both the first shell 10 and the second shell 20 are made of materials with good thermal conductivity (such as aluminum alloy, etc.) so as to quickly conduct heat from the battery core to the external environment.

[0045] Reference Figure 1 to Figure 6In the embodiment of the present invention, the first housing 10 comprises a first bottom plate 13, a first side wall 14 and a second side wall 15 arranged on opposite sides of the first bottom plate along a first direction, and a third side wall 16 and a fourth side wall 17 arranged on opposite sides of the first bottom plate along a second direction, wherein the first direction intersects with the second direction;

[0046] The positioning assembly 11 includes a first positioning member 111, a second positioning member 112 and a third positioning member 113 arranged in the first shell; the first positioning member 111 is arranged at the connection between the first side wall 14 and the third side wall 16, the second positioning member 112 is arranged at the connection between the second side wall 15 and the third side wall 16, the third positioning member 113 is opposite to the third side wall 16 and is arranged at intervals, and the first positioning member 111, the second positioning member 112 and the third positioning member 113 enclose the first accommodating space 12.

[0047] The first bottom plate 13 is the bottom of the first shell 10, providing a plane to support the entire module. The first positioning member 111, the second positioning member 112 and the third positioning member 113 work together to ensure that the battery module 30 can be accurately positioned at a predetermined position during installation to avoid displacement due to vibration or movement during use. These positioning members not only play a positioning role, but also provide additional support to keep the battery module 30 stable in all directions. Through the combination of these positioning members, the range of motion of the battery module 30 can be effectively limited to ensure that its position inside the module does not change. Ensure that the battery module 30 can be accurately placed at a predetermined position inside the first shell 10 during installation. The support and restriction of the positioning assembly 11 improves the structural stability of the entire module. Reduce safety hazards such as internal short circuits caused by displacement of the battery module 30. This design simplifies the assembly process and makes it more convenient to maintain and replace the battery module 30. Through this structural design, the accurate position and stability of the battery module 30 in the cylindrical lithium battery module can be effectively ensured, thereby improving the reliability and safety of the overall battery module.

[0048] Reference Figure 1 to Figure 6 In the embodiment of the present invention, the first bottom plate 13 includes a first bottom wall 131 and a plurality of first ribs 132 , and the plurality of first ribs 132 intersect each other in pairs and are arranged on a side of the first bottom wall 131 facing the first accommodating space 12 .

[0049] The first bottom wall 131 is the main plane part of the first bottom plate 13, providing basic support for the entire module. A plurality of first ribs 132 are arranged on the side of the first bottom wall 131 facing the first accommodating space 12, that is, on the side facing the battery module 30, in a mutually intersecting manner. The main purpose of these ribs is to enhance the structural strength of the first bottom plate 13 and help improve the heat dissipation performance. Specifically, the first ribs 132 can increase the overall rigidity of the first bottom plate 13 to prevent deformation when subjected to pressure or impact. And the first ribs 132 increase the surface area of ​​the first bottom plate 13, which helps the conduction and diffusion of heat, thereby improving the heat dissipation efficiency. By increasing the surface area of ​​the first bottom plate 13, the first ribs 132 help improve the heat conduction efficiency, thereby reducing the operating temperature of the battery module. Compared with the overall thick bottom plate, this design with ribs can reduce weight while ensuring structural strength, which helps to reduce material costs. The first bottom plate 13 not only provides a stable support platform, but also improves the overall performance and reliability of the battery module by increasing structural strength and improving heat dissipation capacity. It is understood that the first ribs 132 are in a straight line, parallel or perpendicular to the edge of the first bottom wall 131. It is understood that the plurality of first ribs 132 intersect each other to form a grid or cross pattern. It can provide stronger structural support, while increasing the surface area of ​​the bottom plate, which is conducive to heat dissipation. It is understood that the first ribs 132 are in a wavy or zigzag shape. The rigidity of the bottom plate can be increased, while the heat dissipation performance can be improved by increasing the surface area. It is understood that the plurality of first ribs 132 can be designed into a multi-layer structure, that is, multiple layers of ribs are arranged at different heights of the first bottom wall 131. The structural strength of the first bottom plate 13 can be further improved, while providing a more complex heat conduction path. It is understood that the cross-section of the first ribs 132 is trapezoidal or triangular, which can increase the strength of the bottom plate. The trapezoidal or triangular cross-section can provide additional support points, which helps to disperse the load.

[0050] Reference Figure 1 to Figure 6 In the embodiment of the present invention, the second housing 20 comprises a second bottom plate 23, a fifth side wall 24 and a sixth side wall 25 disposed on opposite sides of the second bottom plate 23 along the first direction, and a seventh side wall 26 and an eighth side wall 27 disposed on opposite sides of the second bottom plate 23 along the second direction;

[0051] The limiting component 21 includes a first limiting member 211, a second limiting member 212 and a third limiting member 213 arranged in the second shell 20; the first limiting member 211 is arranged at the connection between the fifth side wall 24 and the seventh side wall 26, the second limiting member 212 is arranged at the connection between the fifth side wall 24 and the seventh side wall 26, the third limiting member 213 is opposite to the eighth side wall 27 and is arranged at intervals, and the first limiting member 211, the second limiting member 212 and the third limiting member 213 enclose the second accommodating space 22.

[0052] The second base plate 23 is the bottom of the second shell 20, providing a plane to support the entire module. The second limiter 211, the second limiter 212 and the third limiter 213 work together to ensure that the battery module 30 can be accurately positioned at the predetermined position during installation to avoid displacement due to vibration or movement during use. These limiters not only play a positioning role, but also provide additional support to keep the battery module 30 stable in all directions. Through the combination of these positioning members, the range of motion of the battery module 30 can be effectively limited to ensure that its position inside the module does not change. Ensure that the battery module 30 can be accurately placed at the predetermined position inside the second shell 20 during installation. The support and limiting effect of the limiter assembly 21 improves the structural stability of the entire module. Reduce safety hazards such as internal short circuits caused by displacement of the battery module 30. This design simplifies the assembly process and makes it more convenient to maintain and replace the battery module 30. Through this structural design, the accurate position and stability of the battery cell module 30 in the cylindrical lithium battery module can be effectively ensured, thereby improving the reliability and safety of the entire battery module.

[0053] Reference Figure 1 to Figure 6 In the embodiment of the present invention, the second bottom plate 23 includes a second bottom wall 231 and a plurality of second ribs 232 , and the plurality of second ribs 272 intersect with each other in pairs and are arranged on a side of the second bottom wall 232 facing the second accommodating space 22 .

[0054] The second bottom wall 231 is the main plane part of the second bottom plate 23, providing basic support for the entire module. A plurality of second ribs 232 are arranged on the side of the second bottom wall 231 facing the second accommodating space 22, that is, on the side facing the battery module 30, in a mutually intersecting manner. The main purpose of these ribs is to enhance the structural strength of the second bottom plate 23 and help improve the heat dissipation performance. Specifically, the second ribs 232 can increase the overall rigidity of the second bottom plate 23 to prevent deformation when subjected to pressure or impact. And the second ribs 232 increase the surface area of ​​the second bottom plate 23, which helps the conduction and diffusion of heat, thereby improving the heat dissipation efficiency. By increasing the surface area of ​​the second bottom plate 23, the second ribs 232 help to improve the heat conduction efficiency, thereby reducing the operating temperature of the battery module. Compared with the overall thick bottom plate, this design with ribs can reduce weight while ensuring structural strength, which helps to reduce material costs. The second bottom plate 23 not only provides a stable support platform, but also improves the overall performance and reliability of the battery module by increasing structural strength and improving heat dissipation capacity. It is understood that the second ribs 232 are in a straight line, parallel or perpendicular to the edge of the second bottom wall 231. It is understood that the plurality of second ribs 232 intersect each other to form a grid or cross pattern. It can provide stronger structural support, while increasing the surface area of ​​the bottom plate, which is conducive to heat dissipation. It is understood that the second ribs 232 are in a wavy or zigzag shape. The rigidity of the bottom plate can be increased, while the heat dissipation performance can be improved by increasing the surface area. It is understood that the plurality of second ribs 232 can be designed into a multi-layer structure, that is, multiple layers of ribs are arranged at different heights of the second bottom wall 231. The structural strength of the second bottom plate 23 can be further improved, while providing a more complex heat conduction path. It is understood that the cross-section of the second ribs 232 is trapezoidal or triangular, which can increase the strength of the bottom plate. The trapezoidal or triangular cross-section can provide additional support points, which helps to disperse the load.

[0055] Reference Figure 1 to Figure 6 In the embodiment of the present invention, the first positioning member 111 includes a first enclosure 1111 and a plurality of first ribs 1112. The two ends of the first enclosure 1111 are respectively connected to the first side wall 14 and the third side wall 16. The first enclosure 1111, the first side wall 14 and the third side wall 16 enclose a first installation space. The plurality of first ribs 1112 are arranged in pairs and intersect in the first installation space.

[0056] The second positioning member 112 includes a second enclosing plate 1121 and a plurality of second ribs 1122. The two ends of the second enclosing plate 1121 are respectively connected to the second side wall 15 and the third side wall 16. The second enclosing plate 1121, the second side wall 15 and the third side wall 14 enclose a second installation space. The plurality of second ribs 1122 are intersected in pairs and arranged in the second installation space.

[0057] The third positioning member 113 includes a third enclosure 1131 and a plurality of third ribs 1132. The two ends of the third enclosure 1131 are respectively connected to the first side wall 14 and the second side wall 15. The third enclosure 1131, the first side wall 14 and the second side wall 15 enclose a third installation space. The plurality of third ribs 1132 are intersected in pairs and arranged in the third installation space.

[0058] The first enclosure 1111 is connected to the first side wall 14 and the third side wall 16 to form a first positioning member 111. The second enclosure 1121 is connected to the second side wall 15 and the third side wall 16 to form a second positioning member 112. The third enclosure 1131 is connected to the first side wall 14 and the second side wall 15 to form a third positioning member 113. The battery module 30 is placed in the first accommodating space 12 formed by the positioning assembly 11 to ensure that the battery module 30 is firmly positioned and supported by the first positioning member 111, the second positioning member 112 and the third positioning member 113. It can ensure that the battery module 30 is accurately positioned in the installation cavity to prevent displacement during use. The provision of multiple first ribs 1112, multiple second ribs 1122 and multiple third ribs 1132 increases the structural strength of the positioning assembly 11 and improves the stability of the entire module.

[0059] It can be understood that the first enclosure 1111 includes a first connecting plate and a second connecting plate that can be bent and connected, and the plurality of first ribs 1112 include at least two first ribs, wherein the two first ribs are arranged in pairs and intersecting in the first installation space. The first connecting plate and the second connecting plate have the same height as one of the first ribs, and the height of the other first rib is higher than that of the first connecting plate and the second connecting plate, and is arranged in a chamfered manner. In this embodiment, the structures of the second enclosure 1121 and the third enclosure 1131 are the same as those of the first enclosure 1111.

[0060] Reference Figure 1 to Figure 6 In the embodiment of the present invention, the first position-limiting member 211 includes a fourth enclosure 2111 and a plurality of fourth ribs 2112, the two ends of the fourth enclosure 2111 are respectively connected to the fifth side wall 24 and the seventh side wall 26, the fourth enclosure 2111 and the fifth side wall 24 and the seventh side wall 26 enclose a third installation space, and the plurality of fourth ribs 2112 are arranged in pairs and intersecting in the third installation space;

[0061] The second stopper 212 includes a fifth enclosing plate 2121 and a plurality of fifth ribs 2122. The two ends of the fifth enclosing plate 2121 are respectively connected to the fifth side wall 24 and the seventh side wall 26. The fifth enclosing plate 2121, the fifth side wall 24 and the seventh side wall 26 enclose a fourth installation space. The plurality of fifth ribs 2122 are intersected in pairs and arranged in the fourth installation space.

[0062] The third limiting member 213 includes a sixth enclosure plate 2131 and a plurality of sixth ribs 2132, the two ends of the sixth enclosure plate 2131 are respectively connected to the fifth side wall 24 and the sixth side wall 25, the fifth enclosure plate 2121 and the fifth side wall 24 and the sixth side wall 25 enclose a fifth installation space, and a plurality of the sixth ribs 2132 are intersected in pairs and arranged in the fifth installation space.

[0063] The fourth enclosure 2111 is connected to the fifth side wall 24 and the seventh side wall 26 to form a first limiter 211. The fifth enclosure 2121 is connected to the fifth side wall 24 and the seventh side wall 26 to form a second limiter 212. The sixth enclosure 2131 is connected to the fifth side wall 24 and the sixth side wall 25 to form a third limiter 213. The battery module 30 is placed in the second accommodating space 22 formed by the limiter assembly 21 to ensure that the battery module 30 is firmly positioned and supported by the first limiter 211, the second limiter 212 and the third limiter 213. It can ensure that the battery module 30 is accurately positioned in the installation cavity to prevent displacement during use. The provision of multiple fourth ribs 2112, multiple fifth ribs 2122 and multiple sixth ribs 2132 increases the structural strength of the positioning assembly 11 and improves the stability of the entire module.

[0064] It can be understood that the fourth enclosure 2111 includes a third connecting plate and a fourth connecting plate that can be bent and connected, and the plurality of fourth ribs 2112 include at least two fourth ribs, wherein the two fourth ribs are arranged in pairs and intersecting in the third installation space. The third connecting plate and the fourth connecting plate have the same height as one of the fourth ribs, and the height of the other fourth rib is higher than the height of the third connecting plate and the fourth connecting plate, and is arranged in a chamfered manner. In this embodiment, the structures of the fifth enclosure 2121 and the sixth enclosure 2131 are the same as those of the fourth enclosure 2111.

[0065] Reference Figure 1 to Figure 6 In an embodiment of the present invention, the cylindrical lithium battery module structure further includes a plurality of protection pads 40, a plurality of protection pads 40 are arranged between the first positioning member 111, the second positioning member 112 and the third positioning member 113, and a plurality of protection pads 40 are arranged between the first limiting member 211, the second limiting member 212 and the third limiting member 213.

[0066] A plurality of protective pads 40 are arranged between the first positioning member 111, the second positioning member 112 and the third positioning member 113 to isolate the direct contact between the battery module 30 and these positioning members. The protective pads 40 can absorb vibration and impact, reduce the mechanical stress of the battery module 30, and provide electrical insulation to prevent short circuit. The protective pads 40 can effectively prevent the battery module 30 from being damaged by vibration or impact during use, and reduce the risk of battery damage and short circuit caused by mechanical stress. By reducing the mechanical stress of the battery module 30, it helps to extend the service life of the battery. The protective pads 40 help to ensure the stable position of the battery module 30 in the installation cavity and avoid position displacement caused by movement or vibration. The design of the protective pads 40 makes it easier to maintain or replace the battery module 30, reducing maintenance costs. Although the main purpose of the protective pads 40 is to provide buffering and insulation, they can also help improve heat dissipation performance, especially in high temperature environments, the protective pads 40 can help isolate the impact of high temperature on the battery module 30. In this embodiment, the protective pad 40 is preferably not limited to EVA foam, and can be single-sided adhesive or double-sided adhesive.

[0067] Reference Figure 1 to Figure 6 In an embodiment of the present invention, the cylindrical lithium battery module structure further includes a limiting assembly 50, the limiting assembly 50 includes a snap-fitting member 51 provided on the first shell 10 and a matching member 52 provided on the second shell 20, the matching member 52 is provided with a slot 53, the snap-fitting member 51 is inserted into the slot 53, so that the first shell 10 and the second shell 20 are buckled.

[0068] The main function of the limit assembly 50 is to ensure a stable connection between the first shell 10 and the second shell 20 to protect the internal battery module 30 from the external environment. The engaging member 51 is arranged on the first shell 10, has a certain structural strength, and is used to be inserted into the slot 53 on the matching member 52. The matching member 52 is arranged on the second shell 20 and is provided with a slot 53 for receiving the engaging member 51. When the first shell 10 and the second shell 20 are aligned and close to each other, the engaging member 51 will be inserted into the slot 53 of the matching member 52, thereby achieving a stable connection between the two shells. The matching design of the engaging member 51 and the matching member 52 makes the connection between the first shell 10 and the second shell 20 simple and quick, and is also convenient for disassembly for maintenance or replacement of the battery module 30. Through a reliable connection method, it is ensured that the battery module 30 will not be disturbed by external factors during use, thereby improving the overall safety of the battery module. The tight connection between the engaging member 51 and the matching member 52 helps to improve the structural stability of the entire module and reduce damage caused by vibration or impact. This design can also improve the sealing between the two shells, prevent water vapor, dust, etc. from entering the interior, and further improve the protection level of the battery module. The design of the limit assembly 50 not only simplifies the connection process between the first shell 10 and the second shell 20, but also improves the stability and safety of the entire battery module. This design makes the battery module easy to assemble and disassemble, and also ensures the safety and stability of the battery module 30 during use.

[0069] Reference Figure 1 to Figure 6 In an embodiment of the present invention, the battery cell module 30 includes at least two cylindrical battery cells 31 , and the cylindrical lithium battery module structure further includes a protective film, and the protective film covers at least two of the battery cells 31 .

[0070] The main purpose of the protective film is to protect the battery cells 31 in the battery cell module 30 from external factors, such as physical damage, moisture intrusion, etc., while providing a certain degree of insulation performance. The protective film covers at least two cylindrical battery cells 31 to form a whole to improve the structural stability of the battery cell module 30. The protective film provides an isolation layer for the battery cells 31 to prevent direct contact between the battery cells 31 or between the battery cells 31 and the shell, reducing the risk of short circuit. The protective film usually has a waterproof property, which can prevent moisture from entering the battery cell module 30 and avoid electrical failures caused by moisture. The protective film can also play a certain buffering role to reduce the vibration and impact of the battery cell 31 during use. By isolating the battery cell 31, the safety hazards caused by electrical failures such as short circuits are reduced. The protective film can reduce physical damage to the battery cell 31 and help extend the service life of the battery cell. The protective film enhances the overall structural stability of the battery cell module 30 and reduces the displacement of the battery cell 31 during use. The waterproof performance of the protective film helps to improve the protection level of the battery module, enabling it to be used safely in more environments. The design of the protective film makes it easier to maintain or replace the battery cell 31, thereby reducing maintenance costs.

[0071] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cylindrical lithium battery module structure, characterized in that: include: A first shell, wherein the first shell is provided with a positioning assembly, and the positioning assembly forms a first accommodating space; A second shell, wherein the second shell is provided with a limiting assembly, the limiting assembly forms a second accommodating space, and the first shell is detachably connected to the second shell; When the first shell is connected to the second shell, the first accommodating space and the second accommodating space define a mounting cavity; A battery cell module is arranged in the installation cavity, and the positioning component and the limiting component are arranged around the outer circumference of the battery cell module to limit the battery cell module in the installation cavity.

2. The cylindrical lithium battery module structure according to claim 1, characterized in that: The first housing comprises a first bottom plate, a first side wall and a second side wall arranged on opposite sides of the first bottom plate along a first direction, and a third side wall and a fourth side wall arranged on opposite sides of the first bottom plate along a second direction, wherein the first direction intersects with the second direction; The positioning assembly includes a first positioning member, a second positioning member and a third positioning member arranged in the first shell; the first positioning member is arranged at the connection between the first side wall and the third side wall, the second positioning member is arranged at the connection between the second side wall and the third side wall, the third positioning member is opposite to the third side wall and is arranged at intervals, and the first positioning member, the second positioning member and the third positioning member enclose the first accommodating space.

3. The cylindrical lithium battery module structure according to claim 2, characterized in that: The first bottom plate includes a first bottom wall and a plurality of first ribs, and the plurality of first ribs are intersected in pairs and arranged on a side of the first bottom wall facing the first accommodating space.

4. The cylindrical lithium battery module structure according to claim 2, characterized in that: The second housing comprises a second bottom plate, a fifth side wall and a sixth side wall disposed on opposite sides of the second bottom plate along the first direction, and a seventh side wall and an eighth side wall disposed on opposite sides of the second bottom plate along the second direction; The limiting assembly includes a first limiting member, a second limiting member and a third limiting member arranged in the second shell; the first limiting member is arranged at the connection between the fifth side wall and the seventh side wall, the second limiting member is arranged at the connection between the fifth side wall and the seventh side wall, the third limiting member is opposite to the eighth side wall and is arranged at intervals, and the first limiting member, the second limiting member and the third limiting member enclose the second accommodating space.

5. The cylindrical lithium battery module structure according to claim 2, characterized in that: The second bottom plate includes a second bottom wall and a plurality of second ribs, and the plurality of second ribs are intersected in pairs and arranged on a side of the second bottom wall facing the second accommodating space.

6. The cylindrical lithium battery module structure according to claim 5, characterized in that: The first positioning member includes a first enclosure and a plurality of first ribs, the two ends of the first enclosure are respectively connected to the first side wall and the third side wall, the first enclosure, the first side wall and the third side wall are enclosed to form a first installation space, and the plurality of first ribs are intersected in pairs and arranged in the first installation space; The second positioning member includes a second enclosing plate and a plurality of second ribs, the two ends of the second enclosing plate are respectively connected to the second side wall and the third side wall, the second enclosing plate, the second side wall and the third side wall are enclosed to form a second installation space, and the plurality of second ribs are intersected in pairs and arranged in the second installation space; The third positioning member includes a third enclosure and a plurality of third ribs. The two ends of the third enclosure are respectively connected to the first side wall and the second side wall. The third enclosure, the first side wall and the second side wall are combined to form a third installation space. The plurality of third ribs are intersected in pairs and arranged in the third installation space.

7. The cylindrical lithium battery module structure according to claim 5, characterized in that: The first limiting member includes a fourth enclosure plate and a plurality of fourth ribs, the two ends of the fourth enclosure plate are respectively connected to the fifth side wall and the seventh side wall, the fourth enclosure plate and the fifth side wall and the seventh side wall enclose a third installation space, and the plurality of fourth ribs are intersected in pairs and arranged in the third installation space; The second limiting member includes a fifth enclosing plate and a plurality of fifth ribs, the two ends of the fifth enclosing plate are respectively connected to the fifth side wall and the seventh side wall, the fifth enclosing plate, the fifth side wall and the seventh side wall enclose a fourth installation space, and the plurality of fifth ribs are intersected in pairs and arranged in the fourth installation space; The third limiting member includes a sixth enclosure plate and a plurality of sixth ribs, the two ends of the sixth enclosure plate are respectively connected to the fifth side wall and the sixth side wall, the fifth enclosure plate, the fifth side wall and the sixth side wall enclose a fifth installation space, and the plurality of sixth ribs are intersected in pairs and arranged in the fifth installation space.

8. The cylindrical lithium battery module structure according to claim 5, characterized in that: The cylindrical lithium battery module structure also includes a plurality of protection pads, wherein a plurality of the protection pads are arranged between the first positioning member, the second positioning member and the third positioning member, and a plurality of the protection pads are arranged between the first limiting member, the second limiting member and the third limiting member.

9. The cylindrical lithium battery module structure according to claim 1, characterized in that: The cylindrical lithium battery module structure also includes a limiting component, which includes a locking piece arranged on the first shell and a matching piece arranged on the second shell. The matching piece is provided with a slot, and the locking piece is inserted into the slot to make the first shell and the second shell buckle.

10. The cylindrical lithium battery module structure according to any one of claims 1 to 9, characterized in that: The battery cell module includes at least two cylindrical battery cells, and the cylindrical lithium battery module structure also includes a protective film, which covers at least two of the battery cells.

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