Small-sized battery pack shell and small-sized battery pack
By designing a small battery pack shell with side reinforcement plates and bottom reinforcement plates, the problem of small battery modules being easily damaged during handling is solved, and the effect of simple structure, light weight and effective protection of the internal battery module is achieved.
Patent Information
- Application Number
- CN202421669484.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-15
AI Technical Summary
Small battery modules are prone to collision during handling or carrying, resulting in damage to the battery. How to provide a small battery pack case and small battery pack with a simple structure, light weight and able to protect the internal battery module.
A small battery pack housing is designed, including a lower case and an upper cover that can be snapped into each other. The side walls of the lower case are provided with vertically protruding side rib plates and bottom rib plates. The side rib plates and bottom rib plates are arranged along the side walls of the lower case to form a buffer gap to protect the battery module, and the lightness and easy loading and unloading of the housing are improved through structures such as hand-held straps and positioning flanges.
Through the design of side reinforcement plates and bottom reinforcement plates, the battery module can be effectively prevented from being damaged during collisions. At the same time, due to the gap design, the housing becomes lighter, making it easier to carry or carry.
Smart Images
Figure CN222953241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium batteries, and in particular to a small battery pack shell and a small battery pack. Background Art
[0002] With the rapid development of the new energy industry, battery safety hazards are well known to the public. The society's requirements for the energy density, safety performance, and fast charging of lithium-ion batteries are gradually increasing. Large cylindrical batteries are currently a highly recognized solution. Usually, single cylindrical batteries are combined into suitable battery modules according to usage requirements. Small battery modules are a general-purpose battery module that can take into account a variety of scenarios. They are small in size and easy to carry or carry. Small battery modules may collide during transportation or carrying. How to avoid damage to the batteries in the module has become an urgent problem to be solved. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a small battery pack housing and a small battery pack with a simple structure, light weight and the ability to protect the internal battery module.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A small battery pack shell, characterized in that it includes a lower shell and an upper cover that can be interlocked, the side walls of the lower shell are vertically provided with protruding side ribs, and the bottom has a protruding bottom rib, and the bottom rib is perpendicular to the side walls of the lower shell; multiple side ribs and bottom ribs are circumferentially spaced along the side walls of the lower shell; the spacing between the side ribs on the opposite side walls of the lower shell matches the corresponding size of the battery module to be assembled.
[0006] With the above structure, the battery module is placed in the lower shell, the bottom of the battery module is supported on the bottom rib plate, and the sides are respectively in contact with the side rib plates, so that a buffer gap is formed between the battery module and the side wall of the lower shell. Once a collision occurs, the side rib plates and the bottom rib plate can prevent the battery module from being damaged. At the same time, due to the gap between the battery module and the side wall of the lower shell, the weight of the shell can also be made lighter, which is convenient for handling or carrying.
[0007] Furthermore, the bottom rib plate and the side rib plates are connected one-to-one to form an L-shaped rib plate.
[0008] Furthermore, the bottom rib plate includes a long rib plate extending through the length direction of the lower shell, the long rib plate is located in the middle of the lower shell, and a plurality of the long rib plates are arranged at intervals along the width direction of the lower shell; all other bottom rib plates are arranged along the width direction of the lower shell.
[0009] In this way, the strength of the bottom plate of the lower shell in the length direction can be increased by the long rib plate extending through the bottom plate in the length direction.
[0010] Furthermore, a hand strap is connected to the lower shell, and two ends of the hand strap are respectively connected to two side walls in the width direction of the lower shell.
[0011] Furthermore, the side wall of the lower shell body is provided with a boss on the outside, and the end of the boss is provided with a limit plate protruding radially; the hand strap is provided with a hanging hole set through, and the diameter of the hanging hole is larger than the diameter of the limit plate; the hanging hole is provided with a hanging groove extending toward the outer end of the hand strap, and the width of the hanging groove is larger than the diameter of the boss and smaller than the diameter of the limit plate; the hand strap is detachably hung on the boss of the lower shell body through the hanging hole.
[0012] In this way, the hand strap can be detached from the lower shell body, making it easier to disassemble and assemble the upper cover body and the lower shell body.
[0013] Furthermore, the lower shell and the upper cover have grooves corresponding to the hand straps, and the bottoms of the grooves protrude toward the corresponding inner cavities of the lower shell and the upper cover; the width of the grooves matches the width of the hand straps, and the depth matches the thickness of the hand straps.
[0014] Furthermore, a limiting column for abutting against the battery module to be assembled is protrudingly provided on the top of the upper cover body, and a plurality of the limiting columns are circumferentially spaced apart along the side wall of the upper cover body.
[0015] Furthermore, the outer edge of the lower shell or the upper cover body protrudes and extends along the side wall direction to form a positioning flange, and the outer edge of the upper cover body or the lower shell body is recessed along the side wall direction to form a positioning groove matching the positioning flange, and the positioning flange can be detachably buckled on the positioning groove.
[0016] Furthermore, the inner side of the side wall of the lower shell has a protruding connecting column, and the connecting column has a vertically arranged threaded hole; the upper cover body has a countersunk hole arranged corresponding to the threaded hole, and the bottom of the countersunk hole has a bolt hole arranged through it.
[0017] A small battery pack, characterized in that it includes the small battery pack shell as described above, wherein a battery module is arranged in the small battery pack shell.
[0018] In summary, the utility model has the advantages of simple structure, light weight, and ability to protect internal battery modules. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 Schematic diagram of the overall structure of the battery pack.
[0020] Figure 2 It is a schematic diagram of the assembly structure of the lower shell and the battery module.
[0021] Figure 3 Schematic diagram of the overall structure of the battery module.
[0022] Figure 4 It is a schematic diagram of the top view structure of the lower mold shell.
[0023] Figure 5 It is a schematic diagram of the overall structure of the lower mold shell.
[0024] Figure 6 It is a schematic diagram of the structure of the upper mold shell viewed from above.
[0025] Figure 7 and Figure 8 Schematic diagram of the overall structure of the upper mold shell.
[0026] Fig. 9 It is a schematic diagram of the overall structure of the lower shell.
[0027] Fig.10 and Fig.11 It is a schematic diagram of the overall structure of the upper cover body. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the embodiments.
[0029] When implementing it, Figures 1 to 11 As shown, a small battery pack includes a small battery pack housing and a small battery module, such as Figure 2 As shown, the small battery module is arranged in the small battery pack shell; the small battery module includes a lower mold shell 21 and an upper mold shell 22 that can be buckled together, and the lower mold shell 21 and the upper mold shell 22 have a positioning ring shell 23 arranged opposite to each other, and the inner diameter of the positioning ring shell 23 matches the diameter of the battery to be assembled, and is tightly arranged in the corresponding lower mold shell 21 and the upper mold shell 22; the upper mold shell 21 is provided with a connecting hole 24 that is coaxial with the positioning ring shell 23, and the diameter of the connecting hole 24 is larger than the pole diameter of the battery to be assembled, and smaller than the diameter of the battery to be assembled; as shown Figure 5 and Figure 7 As shown, the height of the positioning ring shell 23 matches the inner cavity depth of the corresponding lower mold shell 21 and upper mold shell 22 .
[0030] The positioning ring shells 23 are arranged in sequence along the transverse direction (width direction) of the corresponding lower mold shell 21 and the upper mold shell 22 to form positioning ring shell rows, and the positioning ring shell rows are arranged in multiple rows along the longitudinal direction (length direction) of the corresponding lower mold shell 21 and the upper mold shell 22; two adjacent rows of the positioning ring shell rows are staggered and arranged in the length direction of the positioning ring shell rows, and the staggered distance is equal to the radius of the positioning ring shell 23.
[0031] The outer side of the edge of the upper mold shell 22 protrudes and extends along the axial direction of the positioning ring shell 23 to form a limiting flange 25, and the outer side of the edge of the lower mold shell 21 is recessed along the axial direction of the positioning ring shell 23 to form a limiting groove 26 that matches the limiting flange 25, and the limiting flange 25 is detachably buckled on the limiting groove 26. The inner side of the lower mold shell 21 has a protruding connection block 27, and the connection block 27 has a threaded hole arranged along the axial direction of the positioning ring shell 23; the connection block 27 is located between two adjacent positioning ring shells 23, and is arranged in multiple intervals along the edge of the corresponding upper mold shell 22 or lower mold shell 21; the upper mold shell 22 has bolt holes arranged corresponding to the threaded holes; as shown in the figure, the upper mold shell 22 has a countersunk hole 28 arranged corresponding to the threaded hole, and the bolt hole is arranged through the bottom of the countersunk hole. In this embodiment, the lower mold shell 21 and the corresponding positioning ring shell 23 are integrally formed; the upper mold shell 22 and the corresponding positioning ring shell 23 are integrally formed.
[0032] The small battery pack shell includes a lower shell 11 and an upper cover 12 that can be interlocked. The side wall of the lower shell 11 is vertically provided with protruding side ribs 13, and the bottom has a protruding bottom rib 14, and the bottom rib 14 is perpendicular to the side wall of the lower shell 11; multiple side ribs 13 and bottom ribs 14 are circumferentially spaced along the side wall of the lower shell 11; the spacing between the side ribs 13 on the opposite side walls of the lower shell 11 matches the corresponding size of the battery module to be assembled.
[0033] like Fig. 9 As shown, the bottom rib plate 14 is connected to the side rib plates 13 in a one-to-one correspondence to form an L-shaped rib plate, wherein the bottom rib plate 14 includes a long rib plate extending through the length direction of the lower shell 11, the long rib plate is located in the middle of the lower shell 11, and a plurality of the long rib plates are arranged at intervals along the width direction of the lower shell 11; all other bottom rib plates 14 are arranged along the width direction of the lower shell 11.
[0034] The lower shell 11 is connected with a hand strap 15, and the two ends of the hand strap 15 are respectively connected to the two side walls in the width direction of the lower shell 11. Specifically, the side wall of the lower shell 11 is provided with a boss 16, and the end of the boss 16 has a limit plate protruding in the radial direction; the hand strap 15 is provided with a hanging hole set through, and the diameter of the hanging hole is larger than the diameter of the limit plate; the hanging hole is provided with a hanging groove extending toward the outer end of the hand strap 15, and the width of the hanging groove is larger than the diameter of the boss 16 and smaller than the diameter of the limit plate; the hand strap 15 is detachably hung on the boss 16 of the lower shell 11 through the hanging hole; Fig.10 and Fig.11 As shown, in this embodiment, a convex column 16 is also provided on the side surface of the upper cover body 12 .
[0035] The lower shell 11 and the upper cover 12 have grooves corresponding to the hand strap 15, and the bottom of the groove protrudes toward the corresponding inner cavity of the lower shell 11 and the upper cover 12; the width of the groove matches the width of the hand strap 15, and the depth matches the thickness of the hand strap 15.
[0036] like Fig.10 As shown, a limiting column 17 for abutting against the battery module to be assembled is protrudingly provided on the top of the upper cover body 12 , and a plurality of the limiting columns 17 are circumferentially spaced apart along the side wall of the upper cover body 12 .
[0037] In this embodiment, the outer edge of the lower shell 11 or the upper cover 12 protrudes and extends along the side wall direction to form a positioning flange 18, and the outer edge of the upper cover 12 or the lower shell 11 is recessed along the side wall direction to form a positioning groove 19 that matches the positioning flange 18, and the positioning flange 18 is detachably buckled on the positioning groove 19. The inner side of the side wall of the lower shell 11 has a protruding connecting column, and the connecting column has a vertically arranged threaded hole; the upper cover 12 has a countersunk hole arranged corresponding to the threaded hole, and the bottom of the countersunk hole has a bolt hole arranged through it.
[0038] When in use, the cylindrical battery is placed in the positioning ring shell of the lower mold shell, and then the upper mold shell is buckled on the lower mold shell. The pole of the cylindrical battery is directly opposite to the connection hole on the upper mold shell. Since the diameter of the connection hole is larger than the diameter of the pole, both the positive and negative poles of the battery can be exposed through the connection hole, thereby facilitating welding connection between the batteries. The upper mold shell and the lower mold shell are fixedly connected by bolts to form a battery module, and then the battery module is placed in the lower shell body. Figure 2As shown, the bottom of the battery module is supported on the bottom rib plate, and the sides are respectively in contact with the side rib plates, so that a buffer gap is formed between the battery module and the side wall of the lower shell. Once a collision occurs, the side rib plates and the bottom rib plate can prevent the battery module from being damaged. At the same time, due to the gap between the battery module and the side wall of the lower shell, the weight of the shell can also be made lighter, which is convenient for handling or carrying.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A small battery pack housing, characterized in that: The invention comprises a lower shell (11) and an upper cover (12) which can be interlocked with each other, the side wall of the lower shell (11) is vertically provided with a protruding side rib plate (13), and the bottom is provided with a protruding bottom rib plate (14), and the bottom rib plate (14) is perpendicular to the side wall of the lower shell (11); a plurality of the side rib plates (13) and the bottom rib plates (14) are circumferentially spaced along the side wall of the lower shell (11); the spacing between the side rib plates (13) on the opposite side walls of the lower shell (11) matches the corresponding size of the battery module to be assembled.
2. The small battery pack housing according to claim 1, wherein: The bottom rib plate (14) and the side rib plates (13) are connected in a one-to-one correspondence to form an L-shaped rib plate.
3. The small battery pack housing according to claim 1, wherein: The bottom rib plate (14) comprises a long rib plate extending through the lower shell (11) in the length direction, the long rib plate being located in the middle of the lower shell (11) and a plurality of the long rib plates being arranged at intervals in the width direction of the lower shell (11); all other bottom rib plates (14) are arranged in the width direction of the lower shell (11).
4. The small battery pack housing according to claim 1, wherein: A hand strap (15) is connected to the lower shell (11), and two ends of the hand strap (15) are respectively connected to two side walls of the lower shell (11) in the width direction.
5. The small battery pack housing according to claim 4, characterized in that: The side wall of the lower shell (11) is provided with a protruding column (16) on the outside, and the end of the protruding column (16) is provided with a limiting plate protruding in the radial direction; the hand strap (15) is provided with a hanging hole arranged through, and the diameter of the hanging hole is larger than the diameter of the limiting plate; the hanging hole is provided with a hanging groove extending toward the outer end of the hand strap (15), and the width of the hanging groove is larger than the diameter of the protruding column (16) and smaller than the diameter of the limiting plate; the hand strap (15) is detachably hung on the protruding column (16) of the lower shell (11) through the hanging hole.
6. The small battery pack housing according to claim 4 or 5, characterized in that: The lower shell (11) and the upper cover (12) are provided with grooves arranged corresponding to the hand strap (15), and the bottoms of the grooves protrude toward the corresponding inner cavities of the lower shell (11) and the upper cover (12); the width of the grooves matches the width of the hand strap (15), and the depth matches the thickness of the hand strap (15).
7. The small battery pack housing according to claim 1, wherein: A limiting column (17) for abutting against a battery module to be assembled is protrudingly provided on the top of the upper cover body (12), and a plurality of the limiting columns (17) are arranged at intervals in the circumferential direction along the side wall of the upper cover body (12).
8. The small battery pack housing according to claim 1, wherein: The outer edge of the lower shell (11) or the upper cover (12) protrudes and extends along the side wall direction to form a positioning flange (18), and the outer edge of the upper cover (12) or the lower shell (11) is recessed along the side wall direction to form a positioning groove (19) matching the positioning flange (18), and the positioning flange (18) is detachably buckled on the positioning groove (19).
9. The small battery pack housing according to claim 1, wherein: The inner side of the side wall of the lower shell (11) has a protruding connecting column, and the connecting column has a vertically arranged threaded hole; the upper cover body (12) has a countersunk hole arranged corresponding to the threaded hole, and the bottom of the countersunk hole has a bolt hole arranged through it.
10. A small battery pack, characterized in that: It comprises a small battery pack housing as claimed in any one of claims 1 to 9, wherein a battery module (2) is arranged in the small battery pack housing.