Battery pack for battery replacement

Abstract

The utility model discloses a battery pack for battery replacement, which comprises a plastic box body provided with a battery compartment with an opening on one side, and a handle device nested outside the plastic box body; the plastic box cover is connected with the opening of the plastic box body in a buckling manner; the battery cell module is assembled in the battery compartment, the battery cell module comprises a plurality of linearly stacked battery cells and a bandage wound on the peripheries of the plurality of battery cells, and a first buffer layer is clamped between every two adjacent battery cells; each side surface outside the battery cell module is completely coated with the second buffer layer; and the wire harness system is electrically connected with the battery cell module. The design of the plastic box body and the plastic box cover can provide additional protection for the battery cell module, and can effectively prevent impurities such as external moisture and dust from entering the battery pack in cooperation with the double buffer layers, so that the performance and the service life of the battery are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack for battery swapping. Background Art

[0002] In the battery swapping system of two-wheeled electric vehicles, the battery pack, as a core component, directly affects the user experience and system efficiency in terms of its performance, safety, and ease of use. However, there are many deficiencies in the current battery packs for battery swapping of two-wheeled electric vehicles on the market, which are specifically manifested in the following aspects:

[0003] The protection between the existing battery packs for battery swapping of two-wheeled electric vehicles and the battery cell modules is single, only a foam structure is provided, and its performance in aspects such as waterproofing, dustproofing, and its own mechanical strength is insufficient, making it difficult to meet the requirements of high protection levels. This results in the battery pack being easily damaged in harsh environments, affecting the performance and lifespan of the battery. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the existing technology, the utility model provides a battery pack for battery swapping. By setting multiple protective layers, the deficiencies in aspects such as waterproofing, dustproofing, and its own mechanical strength of the battery pack can be solved, and the overall performance and safety of the battery pack itself can be improved.

[0005] The technical solution adopted by the utility model to solve its problems is as follows:

[0006] A battery pack for battery swapping, comprising: a plastic box body, the plastic box body has a battery compartment with an open side, and a handle device is nested outside the plastic box body; a plastic box cover, the plastic box cover is detachably connected to the open end of the plastic box body; a battery cell module, the battery cell module is assembled in the battery compartment, the battery cell module includes a plurality of linearly stacked battery cells and a binding band wound around the periphery of the plurality of battery cells, and a first buffer layer is clamped between every two adjacent battery cells; a second buffer layer, the second buffer layer completely wraps each side outside the battery cell module; a wiring harness system, the wiring harness system is electrically connected to the battery cell module; wherein, a fastener is provided at the connection where the plastic box cover and the plastic box body are detachably connected, and an avoidance structure for avoiding the fastener is provided on the plastic box cover and the plastic box body.

[0007] By adopting the above solution, the first buffer layer can provide sufficient buffer space between the battery cells to prevent the battery cells from being damaged during vibration or collision. The second buffer layer can further improve the impact resistance and protection performance of the battery pack. At the same time, the design of the plastic box body and the plastic box cover can also provide additional protection for the battery cell module. Cooperating with the double-layer buffer layer can effectively prevent external impurities such as moisture and dust from entering the interior of the battery pack, ensuring the performance and lifespan of the battery. Secondly, the plastic box body itself has high strength and toughness and can withstand a certain amount of impact and extrusion. The handle device facilitates the user to carry and install the battery pack, improving the usability of the battery. The fastener can be assembled within the avoidance structure, thus not increasing the overall volume of the battery pack and reducing the space occupation ratio.

[0008] Further, a third buffer layer is provided on the outer side of the battery cell located at the end, and the area of the third buffer layer is larger than the area of the joint surface between the battery cell and the third buffer layer.

[0009] By adopting the above solution, the third buffer layer forms a wider buffer area on the outer side of the battery cell located at the end. Such a design can better absorb and disperse the external impact and vibration, thus more effectively protecting the battery cell from damage.

[0010] Further, the third buffer layer is a resin fiber board.

[0011] By adopting the above solution, as a high-performance composite material, the resin fiber board has the advantages of light weight, high strength, corrosion resistance, wear resistance, etc. As the third buffer layer, the resin fiber board can effectively absorb and disperse the external impact and vibration, providing more reliable protection for the battery cell.

[0012] Further, the plastic box cover includes a convex platform protruding away from the plastic box body and an assembly platform fitting with the open mouth of the plastic box body. A stepped surface is formed between the assembly platform and the convex platform, and plug holes for inserting plugs are provided on the stepped surface.

[0013] By adopting the above solution, this design not only enhances the overall structural strength of the box cover but also provides additional operating space. A receiving space for the plug is reserved between the convex platform and the assembly platform. When the plug is inserted into the plug hole, the plug can be protected by the plastic box body, avoiding protruding from the plastic box body and reducing the loosening or poor contact of the circuit caused by external force, greatly improving the wiring safety.

[0014] Further, a wire harness bin is formed within the convex platform. The wire harness bin is communicated with the battery bin. The wire harness system is assembled within the wire harness bin, and the wire harness system is electrically connected to the plug.

[0015] By adopting the above - mentioned solution, the wiring harness system is assembled in the wiring harness bin and electrically connected to the plug - in. This design makes the connection between the battery pack and external devices more convenient and reliable. Through reasonable layout and fixation, the wiring harness system can ensure a stable connection between the battery cell module and the battery management system, avoiding potential safety hazards caused by loose or short - circuited wires. At the same time, the design of the wiring harness bin also makes the repair and replacement of the wiring harness system easier, improving the maintainability of the battery pack.

[0016] Furthermore, the avoidance structure is an assembly groove. The assembly grooves are arranged on the outer side walls of the plastic box cover perpendicular to the opening and on the outer side walls of the plastic box body perpendicular to the opening, with a number of concave assembly grooves. On the inner side walls of the plastic box cover perpendicular to the opening and on the inner side walls of the plastic box body perpendicular to the opening corresponding to the assembly grooves, there are formed assembly posts. A threaded hole is provided at one end of the assembly post of the assembly groove facing the opening of the plastic box body, and the fastener passes through the threaded hole.

[0017] By adopting the above - mentioned solution, the assembly groove not only provides an installation space for the fastener, but also forms an assembly post on its back side due to its own structure, enhancing the structural strength of the side wall of the box cover. In addition, a threaded hole is provided at one end of the assembly post facing the opening, which provides a convenient interface for subsequent assembly operations. These assembly posts are integrally formed with the battery bin, not only enhancing the overall strength of the battery bin, but also ensuring a firm connection between the assembly posts and the battery bin. The design of the assembly posts can ensure accurate alignment between the plastic box cover and the plastic box body during assembly, improving the assembly accuracy and efficiency; the fastener is tightened with the assembly post through the threaded hole, thereby realizing the firm connection between the plastic box cover and the plastic box body. This connection method is not only simple in structure and convenient to operate, but also firmly connected and reliable, ensuring that the battery pack still maintains good sealing performance and structural strength under harsh environments such as vibration and impact.

[0018] Furthermore, the handle device includes: an insert part, which is partially embedded in the plastic box body, and the exposed part is provided with a handle assembly hole; a flexible belt, which is in a ring shape and passes through the handle assembly hole.

[0019] By adopting the above - mentioned solution, a firm connection between the handle device and the battery pack is ensured, preventing the handle device from falling off or shifting during handling. At the same time, the exposed part of the insert part is provided with a handle assembly hole, which provides a convenient interface for the installation of the flexible belt; and it also ensures the comfort of the user during handling. The ring - shaped structure enables the flexible belt to adapt to hands of different sizes, improving the flexibility and convenience of use.

[0020] Furthermore, reinforcing ribs are provided on the inner side wall of the battery bin, and the arrangement direction of the reinforcing ribs is horizontal, vertical or horizontally and vertically staggered.

[0021] By adopting the above - mentioned solution, the setting of the reinforcing ribs can not only improve the structural strength of the battery compartment, but also reduce the damage to the battery cells and the performance degradation caused by vibration and impact, thus extending the service life. At the same time, the design of the reinforcing ribs can also be flexibly adjusted according to specific usage scenarios and requirements to meet the needs of different users.

[0022] Furthermore, a sealing ring is provided between the plastic box body and the plastic box cover.

[0023] By adopting the above - mentioned solution, the material and shape of the sealing ring can closely fit the contact surface between the plastic box body and the plastic box cover, thereby further preventing external impurities such as moisture and dust from entering the interior of the battery pack.

[0024] Furthermore, the first buffer layer is a buffer foam; the second buffer layer is a foamed glue layer.

[0025] By adopting the above - mentioned solution, the buffer foam is a light, soft and elastic material. Its unique structure enables it to effectively absorb and disperse the impact force. In addition, the buffer foam also has good shock - proof and sound - insulation properties, which can further protect the battery from vibration and noise interference; the foamed glue layer is a material made by mixing a foaming agent and an adhesive, and its interior is filled with tiny bubbles. These bubbles can quickly deform and absorb energy when subjected to impact, thus playing a buffering role. At the same time, the foamed glue layer also has good sealing and anti - penetration properties, which can effectively prevent external impurities such as moisture and dust from entering the interior of the battery compartment and protect the battery from damage.

[0026] In summary, a battery pack for battery swapping provided by the present utility model has the following technical effects:

[0027] 1. The first buffer layer interposed between the battery cells can effectively absorb and disperse external impacts such as vibration and collision, reduce the direct collision and friction between the battery cells, thereby preventing the battery cells from being damaged and ensuring the stability and safety of the battery cells;

[0028] 2. The second buffer layer wrapped outside the battery cell module further improves the impact resistance and protection performance of the battery pack, effectively resists potential threats to the battery cells from the external environment, such as the intrusion of impurities such as moisture and dust, and guarantees the performance and service life of the battery;

[0029] 3. The design of the plastic box body and the plastic box cover provides a strong outer shell for the battery cell module. This outer shell has high strength and toughness, can withstand a certain amount of impact and extrusion, and maintains the integrity and stability of the battery pack;

[0030] 4. The handle device nested outside the plastic box body greatly facilitates the user to carry and install the battery pack. At the same time, it reduces the space occupied by the handle device, reduces the operation difficulty, and improves the usability of the battery. Brief Description of the Drawings

[0031] Figure 1 is a schematic perspective view of an embodiment of the present utility model;

[0032] Figure 2 is a schematic partial exploded view of an embodiment of the present utility model;

[0033] Figure 3 is a schematic view of the plastic box cover structure of an embodiment of the present utility model;

[0034] Figure 4 is a schematic view of the battery cell module structure of an embodiment of the present utility model;

[0035] Figure 5 is a schematic view of the plastic box body structure of an embodiment of the present utility model.

[0036] Among them, the meanings of the reference numerals are as follows: 1, plastic box body; 11, open mouth; 12, battery compartment; 13, assembly post; 14, reinforcing rib; 2, plastic box cover; 21, boss; 22, assembly platform; 23, stepped surface; 24, plug hole; 25, assembly groove; 26, threaded hole; 3, battery cell module; 31, battery cell; 32, first buffer layer; 33, third buffer layer; 34, strap; 4, second buffer layer; 5, wiring harness system; 6, handle device; 61, insert; 62, handle assembly hole; 63, flexible band; 7, fastener; 8, sealing ring. Detailed Description of the Embodiments

[0037] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described and discussed below in conjunction with the drawings of the present utility model. Obviously, what is described here is only a part of the examples of the present utility model, not all of the examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0038] For the convenience of understanding the embodiments of the present utility model, the following will further explain with specific examples in conjunction with the drawings, and each embodiment does not constitute a limitation to the embodiments of the present utility model.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0041] Refer to Embodiment 1 of the present utility model Figures 1-5As shown, a battery swapping battery pack is disclosed, which includes a plastic box body 1, a plastic box cover 2, a battery cell module 3, a first buffer layer 32, a second buffer layer 4 and a wiring harness system 5. The plastic box body 1 has a battery compartment 12 with an opening 11 on one side. The plastic box cover 2 is snap-fitted to the opening 11 of the plastic box body 1. Preferably, the plastic box cover 2 is attached to the plastic box body 1 by screwing. A handle device 6 is nested outside the plastic box body 1. Preferably, in actual use, the handle device 6 is arranged on the top surface of the plastic box body 1 for easy carrying by the user. The battery cell module 3 is assembled in the battery compartment 12. The battery cell module 3 includes a plurality of linearly stacked battery cells 31 and a binding tape 34 wound around the periphery of the plurality of battery cells 31. Preferably, there are two binding tapes 34, and a fiberglass tape is used as the binding tape 34. The fiberglass tape has high strength and elasticity, can withstand high temperature and corrosion, and also has good adhesiveness, insulation and flame retardancy, thus improving the safety and firmness of the battery cell module 3. A first buffer layer 32 is sandwiched between every two adjacent battery cells 31. Preferably, the first buffer layer 32 is made of buffer foam. The buffer foam is a lightweight, soft and elastic material. Its unique structure enables it to effectively absorb and disperse impacts, and also has good shockproof and sound insulation properties, which can further protect the battery from vibration and noise interference. The second buffer layer 4 completely wraps each side of the outside of the battery cell module 3. Preferably, the second buffer layer 4 is formed by a potting method to form a foamed glue layer that can wrap the battery cell module 3. The foamed glue layer is a material made by mixing a foaming agent and an adhesive, and its interior is filled with tiny bubbles. These bubbles can quickly deform and absorb energy when impacted, thus playing a buffering role. At the same time, the foamed glue layer also has good sealing and anti-permeability, which can effectively prevent external impurities such as moisture and dust from entering the inside of the battery compartment 12 and protect the battery from damage. The design of the plastic box body and the plastic box cover 2 of this application can provide additional protection for the battery cell module 3. Cooperating with the double-layer buffer layer can effectively prevent external impurities such as moisture and dust from entering the inside of the battery pack, ensuring the performance and life of the battery. Secondly, the plastic box body 1 itself has high strength and toughness and can withstand a certain amount of impact and extrusion. The handle device 6 facilitates the user to carry and install the battery pack, improving the usability of the battery.

[0042] Optionally, a fastener 7 is provided at the snap-fitting connection between the plastic box cover 2 and the plastic box body 1. Avoidance structures for the fastener 7 are provided on the plastic box cover 2 and the plastic box body 1. The avoidance structures include but are not limited to grooves or holes, which can enable the fastener 7 to be assembled in the avoidance structures, so as not to increase the overall volume of the battery pack and reduce the space occupation ratio.

[0043] In a specific embodiment, the handle device 6 includes an embedding member 61 and a flexible belt 63. The embedding member 61 is partially embedded in the plastic box body 1, and the exposed part is provided with a handle assembly hole 62. The flexible belt 63 is in a ring shape and passes through the handle assembly hole 62, ensuring a firm connection between the handle device 6 and the battery pack and preventing the handle device 6 from falling off or shifting during handling. At the same time, the exposed part of the embedding member 61 is provided with a handle assembly hole 62, which provides a convenient interface for the installation of the flexible belt 63; meanwhile, it ensures the comfort of the user during handling. The ring structure enables the flexible belt 63 to adapt to hands of different sizes, improving the flexibility and convenience of use. It should be noted that the flexible belt 63 is made of plastic that can be used as plastic, which is convenient to use and does not occupy space.

[0044] In this Embodiment 1, a third buffer layer 33 is provided outside the end cell 31. The area of the third buffer layer 33 is larger than the area of the joint surface between the cell 31 and the third buffer layer 33, that is, the area of the third buffer layer 33 is larger than the area of the expanded large surface of the cell 31. The third buffer layer 33 forms a wider buffer area outside the end cell 31. Such a design can better absorb and disperse external impacts and vibrations, thereby more effectively protecting the cell 31 from damage. Preferably, the third buffer layer 33 is a resin fiber board. Compared with the prior art, replacing the buffer foam with a resin fiber board can effectively absorb and disperse external impacts and vibrations, providing more reliable protection for the cell 31. As a high-performance composite material, the resin fiber board has the advantages of light weight, high strength, corrosion resistance, wear resistance, etc.

[0045] Optionally, the plastic box cover 2 includes a boss 21 protruding away from the plastic box body 1 and an assembly platform 22 that fits the opening 11 of the plastic box body 1. A stepped surface 23 is formed between the assembly platform 22 and the boss 21. The stepped surface 23 is provided with a plug hole 24 for inserting plugs. This design not only enhances the overall structural strength of the box cover but also provides additional operating space. A receiving space for plugs is reserved between the boss 21 and the assembly platform 22. When the plug is inserted into the plug hole 24, the plug can be protected by the plastic box body 1, preventing it from protruding from the plastic box body 1 and reducing the loosening or poor contact of the circuit caused by external force, greatly improving the wiring safety.

[0046] In the present Embodiment 1, the plastic box cover 2 is provided with a boss 21, and a wire harness compartment is formed inside the boss 21. The wire harness compartment communicates with the battery compartment 12. The wire harness system 5 is assembled inside the wire harness compartment, and the wire harness system 5 is electrically connected to the plug-in. The wire harness system 5 is assembled inside the wire harness compartment and is electrically connected to the plug-in. This design makes the connection between the battery pack and external devices more convenient and reliable. Through reasonable layout and fixation, the wire harness system 5 can ensure a stable connection between the battery cell module 3 and the battery management system, avoiding potential safety hazards caused by loose or short-circuited wires. At the same time, the design of the wire harness compartment also makes the maintenance and replacement of the wire harness system 5 easier, improving the maintainability of the battery pack.

[0047] In order to improve the assembly strength and sealing performance between the plastic box cover 2 and the plastic box body 1, in some embodiments, the avoidance structure is an assembly groove 25. The assembly groove 25 is located on the outer side wall of the plastic box cover 2 perpendicular to the opening 11 and on the outer side wall of the plastic box body 1 perpendicular to the opening 11. Assembly posts 13 are formed on the inner side wall of the plastic box cover 2 perpendicular to the opening 11 and on the inner side wall of the plastic box body 1 perpendicular to the opening 11 corresponding to the assembly groove 25. A threaded hole 26 is provided at one end of the assembly post 13 facing the opening 11, and the fastener 7 is inserted through the threaded hole 26. The assembly groove 25 not only provides an installation space for the fastener 7, but also the assembly posts 13 formed on its back side enhance the structural strength of the box cover side wall. In addition, a threaded hole 26 is provided at one end of the assembly post 13 facing the opening 11, which provides a convenient interface for subsequent assembly operations. These assembly posts 13 are integrally formed with the battery compartment 12, which not only enhances the overall strength of the battery compartment 12, but also ensures a firm connection between the assembly posts 13 and the battery compartment 12. The design of the assembly posts 13 can ensure accurate alignment between the plastic box cover 2 and the plastic box body 1 during assembly, improving the assembly accuracy and efficiency. The fastener 7 is tightened with the assembly post 13 through the threaded hole 26, thereby realizing the fastening connection between the plastic box cover 2 and the plastic box body 1. This connection method is not only simple in structure and convenient in operation, but also firm and reliable in connection, and can ensure that the battery pack still maintains good sealing performance and structural strength under harsh environments such as vibration and impact. Preferably, the fastener 7 is a screw.

[0048] Optionally, a sealing ring 8 is provided between the plastic box body 1 and the plastic box cover 2. The material and shape of the sealing ring 8 can closely fit the contact surfaces of the plastic box body 1 and the plastic box cover 2, thereby further preventing external impurities such as moisture and dust from entering the interior of the battery pack. And the sealing ring 8 is arranged to avoid the assembly posts 13 and the threaded holes 26, preventing the sealing ring 8 from failing due to the fastener 7.

[0049] In order to further improve the self-strength of the plastic box body 1, reinforcing ribs 14 are provided on the inner side wall of the battery compartment 12. Optionally, the arrangement direction of the reinforcing ribs 14 is horizontal, vertical or horizontal and vertical cross. The design of the reinforcing ribs 14 can also be flexibly adjusted according to specific usage scenarios and requirements to meet the needs of different users. Preferably, the reinforcing ribs 14 are arranged on the bin wall of the battery compartment 12 corresponding to the opening 11, and the reinforcing ribs 14 are arranged horizontally and vertically in a cross pattern. The reinforcing ribs 14 are in contact with the battery cell module 3 to improve the self-assembly stability of the battery cell module 3. The arrangement of the reinforcing ribs 14 can not only improve the structural strength of the battery compartment 12, but also reduce the damage and performance degradation of the battery cells 31 caused by vibration and impact, and extend the service life.

[0050] In summary, a battery replacement battery pack provided by the present utility model has the following technical effects:

[0051] 1. The first buffer layer 32 interposed between the battery cells 31 can effectively absorb and disperse external impacts such as vibration and collision, reduce the direct collision and friction between the battery cells 31, thereby preventing the battery cells 31 from being damaged and ensuring the stability and safety of the battery cells 31;

[0052] 2. The second buffer layer 4 wrapped outside the battery cell module 3 further improves the impact resistance and protection performance of the battery pack, effectively resists potential threats to the battery cells 31 from the external environment, such as the intrusion of impurities such as moisture and dust, and guarantees the performance and life of the battery;

[0053] 3. The designs of the plastic box body 1 and the plastic box cover 2 provide a strong outer shell for the battery cell module 3. This outer shell has high strength and toughness, can withstand certain impacts and squeezes, and maintains the integrity and stability of the battery pack;

[0054] 4. The handle device 6 nested outside the plastic box body 1 greatly facilitates the user to carry and install the battery pack. At the same time, it reduces the space occupied by the handle device 6, reduces the operation difficulty, and improves the usability of the battery.

[0055] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A battery pack for battery replacement, characterized in that: include: A plastic box (1), the plastic box (1) having a battery compartment (12) with an opening (11) on one side, and a handle device (6) nested outside the plastic box (1); A plastic box cover (2), the plastic box cover (2) being snap-fitted and connected to the opening (11) of the plastic box body (1); A battery cell module (3), the battery cell module (3) being assembled in the battery compartment (12), the battery cell module (3) comprising a plurality of linearly stacked battery cells (31) and a binding band (34) wound around the periphery of the plurality of battery cells (31), and a first buffer layer (32) being sandwiched between every two adjacent battery cells (31); A second buffer layer (4), the second buffer layer (4) completely wraps around each side surface outside the battery core module (3); A wiring harness system (5), the wiring harness system (5) being electrically connected to the battery core module (3); Wherein, a fastener (7) is provided at the buckled connection between the plastic box cover (2) and the plastic box body (1), and an avoidance structure for avoiding the fastener is provided on the plastic box cover (2) and the plastic box body (1).

2. A battery replacement pack according to claim 1, characterized in that: A third buffer layer (33) is arranged outside the battery core (31) at the end, and the area of ​​the third buffer layer (33) is larger than the area of ​​the bonding surface between the battery core (31) and the third buffer layer (33).

3. A battery replacement pack according to claim 2, characterized in that: The third buffer layer (33) is a resin fiberboard.

4. A battery replacement pack according to claim 1, characterized in that: The plastic box cover (2) comprises a boss (21) protruding toward a side away from the plastic box body (1) and an assembly platform (22) fitted with an opening (11) of the plastic box body (1), a stepped surface (23) is formed between the assembly platform (22) and the boss (21), and the stepped surface (23) is provided with an insert hole (24) for inserting an insert.

5. A battery replacement pack according to claim 4, characterized in that: A wiring harness compartment is formed in the boss (21), the wiring harness compartment is communicated with the battery compartment (12), the wiring harness system (5) is assembled in the wiring harness compartment, and the wiring harness system (5) is electrically connected to the plug-in.

6. A battery replacement pack according to claim 1, characterized in that: The avoidance structure is an assembly groove (25), and the assembly groove (25) is located on the outer side wall of the plastic box cover (2) perpendicular to the opening (11) and on the outer side wall of the plastic box body (1) perpendicular to the opening (11). An assembly column (13) is formed on the inner side wall of the plastic box cover (2) perpendicular to the opening (11) and on the inner side wall of the plastic box body (1) perpendicular to the opening (11) corresponding to the assembly groove (25). A threaded hole (26) is provided at one end of the assembly column (13) facing the opening (11), and the fastener (7) is penetrated through the threaded hole (26).

7. A battery replacement pack according to any one of claims 1 to 6, characterized in that: The handle device (6) comprises: An embedding piece (61), wherein the embedding piece (61) is partially embedded in the plastic box (1), and the exposed portion is provided with a handle assembly hole (62); A flexible belt (63) is ring-shaped and is inserted into the handle assembly hole (62).

8. A battery replacement pack according to any one of claims 1 to 6, characterized in that: The inner side wall of the battery compartment (12) is provided with reinforcing ribs (14), and the reinforcing ribs (14) are arranged in a horizontal direction, a vertical direction, or a horizontal and vertical staggered direction.

9. A battery replacement pack according to any one of claims 1 to 6, characterized in that: A sealing ring (8) is provided between the plastic box body (1) and the plastic box cover (2).

10. A battery replacement pack according to any one of claims 1 to 6, characterized in that: The first buffer layer (32) is a buffer foam; and the second buffer layer (4) is a foamed rubber layer.

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