Shell for battery pack, battery pack and two-wheeled electric vehicle

Abstract

The utility model discloses a shell for a battery pack, the battery pack and a two-wheeled electric vehicle, and belongs to the technical field of batteries. The shell comprises a box body, a box cover and a fastener, the box body comprises a bottom wall and an enclosure wall which surrounds the peripheral side of the bottom wall and extends in the direction away from the bottom wall, a first connecting hole penetrating through the thickness direction of the enclosure wall is formed in the end, away from the bottom wall, of the enclosure wall, and the box cover comprises a cover part and a fixing part which surrounds the peripheral side of the cover part and extends in the direction away from the cover part; the fixing part is provided with a plurality of second connecting holes which are arranged along the peripheral side at intervals and penetrate through the thickness direction of the fixing part, and the second connecting holes can communicate with the first connecting holes in a one-to-one correspondence mode; the first connecting holes and the second connecting holes which are correspondingly communicated are fixedly connected through fasteners, short bolts can be adopted for connection, the assembling efficiency can be improved, and the connecting strength between the box body and the box cover can be guaranteed. The battery pack and the two-wheeled electric vehicle are convenient to disassemble and assemble quickly by applying the shell.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a housing for a battery pack, a battery pack, and a two-wheeled electric vehicle. Background Art

[0002] The batteries of two-wheeled electric vehicles are mostly rechargeable, and it takes 6 to 8 hours to fully charge them. However, for some industries, such as the express delivery and food delivery industries, long charging time will affect the work efficiency of users. In order to solve the problem that the long charging time of the batteries of two-wheeled electric vehicles affects the work efficiency of users, a battery pack is introduced on the market, which is installed at the bottom of the pedal of a two-wheeled electric vehicle through a quick-release structure. The battery pack includes a housing and a battery cell module arranged in the housing. When the battery pack is almost out of power, the user can directly go to the battery replacement station to replace the battery pack. The battery replacement operation is more time-saving and can meet the work needs of users.

[0003] In the related art, the battery pack housing includes a box body and a box cover. The thickness of the periphery of the box cover is relatively thick. It is necessary to use long bolts to pass through the box cover to realize the connection between the box cover and the box body, or use flange connection. Among them, for the long bolt connection, not only is the assembly efficiency low, but also the long bolt is prone to break when subjected to lateral force, affecting the connection strength between the box cover and the box body; while the flange connection will increase the length and width dimensions of the battery pack housing, reducing the energy density of the battery pack.

[0004] This part provides background information related to the present application, and these background information are not necessarily prior art. Summary of the Utility Model

[0005] An object of the present application is to solve or at least mitigate part or all of the above problems. To this end, an object of the present application is to provide a housing for a battery pack, a battery pack, and a two-wheeled electric vehicle.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a housing for a battery pack, including:

[0008] A box body, including a bottom wall and a surrounding wall surrounding the periphery of the bottom wall and extending away from the bottom wall. One end of the surrounding wall away from the bottom wall has a first connection hole penetrating the thickness direction of the surrounding wall, and a plurality of the first connection holes are arranged at intervals along the periphery of the surrounding wall;

[0009] A box cover, including a cover portion and a fixing portion surrounding the periphery of the cover portion and extending away from the cover portion. The fixing portion has a plurality of second connection holes arranged at intervals along its periphery and penetrating its thickness direction, and the second connection holes can be in one-to-one correspondence and communication with the first connection holes;

[0010] The fastener fixedly connects the correspondingly communicated first connection hole and the second connection hole through the fastener.

[0011] As an alternative to the outer shell for the battery pack, the fixing portion can extend into the surrounding wall, and the fastener passes through the first connection hole and is threadedly connected to the second connection hole; or the fixing portion can be sleeved outside the surrounding wall, and the fastener passes through the second connection hole and is threadedly connected to the first connection hole.

[0012] As an alternative to the outer shell for the battery pack, in the state where the fixing portion extends into the surrounding wall, there is a stepped surface at the connection between the fixing portion and the cover portion. In the state where the fixing portion extends into the surrounding wall, the end surface of the surrounding wall contacts the stepped surface, and the width of the stepped surface is the same as the thickness of the surrounding wall; or in the state where the fixing portion is sleeved outside the surrounding wall, the surrounding wall has a stepped surface. In the state where the fixing portion is sleeved outside the surrounding wall, the end surface of the fixing portion contacts the stepped surface, and the width of the stepped surface is the same as the thickness of the fixing portion.

[0013] As an alternative to the outer shell for the battery pack, the box cover further includes an integration portion, and the integration portion is connected to the side of the cover portion away from the fixing portion and cooperates with the cover portion to form a receiving cavity for receiving a battery control system.

[0014] As an alternative to the outer shell for the battery pack, the fastener includes a first connecting member and a second connecting member. The first connecting member has a threaded hole and is located inside the outer shell for the battery pack, and the second connecting member has a threaded portion threadedly connected to the threaded hole and is located outside the outer shell for the battery pack.

[0015] As an alternative to the outer shell for the battery pack, the outer shell further includes a handle. Both ends of the handle are fixed to the surrounding wall, and the middle of the handle has a hand-held portion for the user to hold.

[0016] In a second aspect, the present application provides a battery pack, including a battery cell module and the outer shell for the battery pack as described in any one of the above, and the battery cell module is installed inside the outer shell for the battery pack.

[0017] As an alternative to the battery pack, the battery pack further includes insulating support members, and the insulating support members are provided on both the bottom wall and the surrounding wall of the box body.

[0018] As an alternative to the battery pack, the battery pack further includes an insulating member. There is a gap between the battery cell module and the inner wall of the outer shell for the battery pack, and the insulating member is formed by filling the gap with a flowing insulating material and then curing.

[0019] In a third aspect, the present application provides a two-wheel electric vehicle, including a vehicle body and the battery pack as described above, and the battery pack is installed at the pedal of the vehicle body.

[0020] The beneficial effects of the present application are as follows:

[0021] For the outer shell provided by the present application, by opening first connection holes on the peripheral side of the enclosure wall of the box body and opening second connection holes corresponding to the first connection holes on the peripheral side of the fixing part of the box cover, and then using fasteners to fixedly connect the box cover and the box body from the peripheral side of the box body, short bolts can be used for connection, which can not only improve the assembly efficiency, but also ensure the connection strength between the box body and the box cover.

[0022] For the battery pack provided by the present application, by applying the above outer shell, it is convenient for quick disassembly and assembly.

[0023] For the two-wheel electric vehicle provided by the present application, by applying the above battery pack, it is convenient for quick disassembly and assembly. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present application and these drawings.

[0025] Figure 1 is an exploded schematic view of the battery pack provided by the embodiment of the present application;

[0026] Figure 2 is a cross-sectional schematic view of the battery pack in one direction provided by the embodiment of the present application;

[0027] Figure 3 is Figure 2 a partial enlarged view in;

[0028] Figure 4 is a structural schematic view of the battery cell module provided by the embodiment of the present application;

[0029] Figure 5 is a structural schematic view of the box body provided by the embodiment of the present application;

[0030] Figure 6 is a cross-sectional schematic view of the battery pack provided by the embodiment of the present application.

[0031] Reference Signs:

[0032] 100. Outer shell; 200. Battery cell module; 201. Battery cell; 202. Buffer foam; 203. Fiberglass tape; 204. Resin fiberglass board; 300. Insulating support; 400. Insulating part;

[0033] 1. Box body; 11. Bottom wall; 12. Enclosing wall; 121. First connection hole;

[0034] 2. Box cover; 21. Cover part; 22. Fixing part; 221. Second connection hole; 23. Step surface; 24. Integrated part;

[0035] 3. Handle;

[0036] 4. Fastener; 41. First connecting piece; 42. Second connecting piece. Detailed implementation mode

[0037] Before explaining any implementation mode of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0038] In the present application, the terms "include", "comprise", "have" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0039] In the present application, the term "and / or" is a relational description of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the present application, the character " / " generally represents an "and / or" relationship between the associated objects before and after.

[0040] In the present application, the terms "connect", "combine", "couple", "install" can be direct connection, combination, coupling or installation, or can be indirect connection, combination, coupling or installation. Among them, for example, direct connection means that two parts or components are connected together without setting an intermediate part, and indirect connection means that two parts or components are respectively connected to at least one intermediate part, and these two parts or components are connected through the intermediate part. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0041] In this application, those of ordinary skill in the art will understand that relative terms used in connection with quantities or conditions (e.g., "about", "approximately", "substantially", etc.) are intended to include the recited value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances resulting from manufacturing, assembly, use in relation to a particular value, etc. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. Relative terms may refer to a plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not employ relative terms should also be disclosed as specific values having tolerances. In addition, "substantially" when expressing a relative angular positional relationship (e.g., substantially parallel, substantially perpendicular) may refer to a plus or minus a certain number of degrees (e.g., 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0042] In this application, those of ordinary skill in the art will understand that the functions performed by components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by parts can also be performed by one part, one component, or a combination of multiple parts.

[0043] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as the upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0044] This application provides a two-wheeled electric vehicle, including a vehicle body and a battery pack, and the battery pack is installed at the pedal of the vehicle body. Specifically, there is a receiving cavity for receiving the battery pack at the pedal of the vehicle body, and the battery pack is installed in this receiving cavity, which can not only provide dust-proof, waterproof and anti-collision protection for the battery pack, but also improve the safety of the battery pack and ensure the stability of the two-wheeled electric vehicle.

[0045] Figure 1 The exploded schematic diagram of the battery pack provided by this application is shown. Figure 2 The sectional schematic diagram of one direction of the battery pack provided by this application is shown. Figure 3 is Figure 2 The partial enlarged view in. As Figures 1 to 3As shown in the figure, the present application also provides a battery pack that can be used for the above-mentioned two-wheel electric vehicle. The battery pack includes a housing 100 and a battery cell module 200 installed in the housing 100. The battery cell module 200 is used to store or release electrical energy to meet the riding needs of the rider. The housing 100 includes a box body 1 and a box cover 2 detachably connected to the box body 1. When assembling the battery pack, first assemble the battery cell module 200 in the box body 1, and then use bolts to fix the box cover 2 to the box body 1.

[0046] The two-wheel electric vehicle also includes a motor and a controller. The battery pack is directly or indirectly electrically connected to the motor and the controller. The controller can control the magnitude of the current output by the battery pack according to the needs of the rider, and further control the motor to convert electrical energy into mechanical energy to control the speed of the vehicle.

[0047] In the related art, since it takes a long time for the battery pack to be fully charged, for the riding users in the express delivery and food delivery industries, the long charging time will affect the work efficiency of the users. In order to facilitate the quick disassembly and assembly of the battery pack and the vehicle body, it is usually necessary to integrate the battery control system that connects the battery pack to electronic components such as the motor and controller of the two-wheel electric vehicle on the box cover, resulting in a relatively thick box cover. Therefore, long bolts are required to pass through the box cover to achieve the connection between the box cover and the box body. The long bolt connection not only has low assembly efficiency, but also is prone to breakage when subjected to lateral forces, affecting the connection strength between the box cover and the box body.

[0048] To solve the above problems, the present application provides a new housing 100 for the battery pack. By improving the connection method and connection position between the box body 1 and the box cover 2, it is not only possible to facilitate the detachable connection between the box cover 2 and the box body 1, but also to ensure the connection strength between the two.

[0049] The housing 100 further includes a fastener 4. The box body 1 includes a bottom wall 11 (see Figure 4) and a surrounding wall 12 disposed around the peripheral side of the bottom wall 11 and extending away from the bottom wall 11. One end of the surrounding wall 12 away from the bottom wall 11 has a first connection hole 121 penetrating through the thickness direction of the surrounding wall 12, and a plurality of first connection holes 121 are arranged at intervals along the peripheral side of the surrounding wall 12; the box cover 2 includes a cover portion 21 and a fixing portion 22 disposed around the peripheral side of the cover portion 21 and extending away from the cover portion 21. The cover portion 21 is used to install the battery control system. The fixing portion 22 has a plurality of second connection holes 221 arranged at intervals along its peripheral side and penetrating through its thickness direction. The second connection holes 221 can be in one-to-one correspondence and communication with the first connection holes 121; the correspondingly communicated first connection holes 121 and second connection holes 221 are fixedly connected by fasteners. The housing 100 is fixedly connected to the box body 1 by the box cover 2 at the peripheral side of the box body 1 by opening the first connection holes 121 on the peripheral side of the surrounding wall 12 of the box body 1, opening the second connection holes 221 corresponding to the first connection holes 121 on the peripheral side of the fixing portion 22 of the box cover 2, and then using fasteners. Short bolt connection can be adopted, which can not only improve the assembly efficiency, but also ensure the connection strength between the box body 1 and the box cover 2.

[0050] In one embodiment, the box cover 2 further includes an integration portion 24. The integration portion 24 is connected to the side of the cover portion 21 away from the fixing portion 22 and cooperates with the cover portion 21 to form an accommodation cavity for accommodating the battery control system.

[0051] In one embodiment, the fixing portion 22 can extend into the surrounding wall 12, and the fastener passes through the first connection hole 121 and is threadedly connected to the second connection hole 221. Further, there is a step surface 23 at the connection between the fixing portion 22 and the cover portion 21. In the state where the fixing portion 22 extends into the surrounding wall 12, the end surface of the surrounding wall 12 contacts the step surface, and the width D1 of the step surface 23 is not less than the thickness D2 of the surrounding wall 12, so that after the box cover 2 is fixedly connected to the box body 1, the side wall of the cover portion 21 of the box cover 2 is flush with the surrounding wall 12 of the box body 1, improving the integrity and aesthetics of the housing 100.

[0052] In another embodiment, the fixing portion 22 can be sleeved outside the surrounding wall 12, and the fastener 4 passes through the second connection hole 221 and is threadedly connected to the first connection hole 121. Further, the surrounding wall 12 has a step surface. In the state where the fixing portion 22 is sleeved outside the surrounding wall 12, the end surface of the fixing portion 22 can contact the step surface, and the width of the step surface is the same as the thickness of the fixing portion 22, so that the outer surface of the fixing portion 22 is flush with the outer surface of the surrounding wall 12, improving the integrity and aesthetics of the housing 100.

[0053] In one embodiment, the fastener 4 includes a first connecting member 41 and a second connecting member 42. The first connecting member 41 has a threaded hole and is located inside the housing for the battery pack. The second connecting member 42 has a threaded portion threadedly connected to the threaded hole and is located outside the housing for the battery pack. By passing the second connecting member 42 through the first connecting hole 121 and the second connecting hole 221 and then threadedly connecting it to the first connecting member 41, the surrounding wall 12 of the box body 1 and the fixing portion 22 of the box cover 2 are fixedly connected. For example, the first connecting member 41 can be a nut, and the second connecting member 42 can be a headed bolt. The first connecting hole 121 is a counterbore so that the head of the fastener can be received in the counterbore to ensure the integrity of the appearance of the box body 1 and improve the aesthetics of the box body 1.

[0054] In one embodiment, the box body 1 is a rectangular box-shaped structure, that is, the surrounding wall 12 has four side walls that are symmetric in pairs. Further, the fixing portion 22 of the box cover 2 is a rectangular ring, and the shape of the fixing portion 22 is the same as that of the surrounding wall 12. When the fixing portion 22 extends into the surrounding wall 12 for assembly, the size of the fixing portion 22 is slightly smaller than that of the surrounding wall 12. When the fixing portion 22 is sleeved outside the surrounding wall 12 for assembly, the size of the fixing portion 22 is slightly larger than that of the surrounding wall 12.

[0055] To facilitate carrying the battery pack by hand, the housing 100 further includes a handle 3. Both ends of the handle 3 are fixed to the surrounding wall 12, and the middle of the handle 3 has a hand-held portion for the user to hold. In one embodiment, the handle 3 is a strip-shaped structure, and both ends of the handle 3 are fixed to the surrounding wall 12 of the box body 1 by bolts.

[0056] In one embodiment, the box body 1 is a metal box body to improve the structural strength of the box body 1. Further, the box cover 2 is also selected as a metal box cover to improve the structural strength of the box cover 2. In addition, the metal box body and the metal box cover are connected by bolts, which can also improve the connection strength between the two and prevent the connection part from deforming under force.

[0057] For the battery pack provided by the present application, by improving the cell module 200 and the fixed connection method between the cell module 200 and the housing 100, the protection ability of the housing 100 for the cell module 200 is improved, and the safety of the battery pack is improved.

[0058] Figure 4 The structural schematic diagram of the cell module 200 provided by the present application is shown. As Figure 4 Combined with Figure 2As shown, the battery cell module 200 includes a battery cell group, a fiberglass tape 203, and a resin fiberglass board 204. The battery cell group is composed of a plurality of battery cells 201 arranged in parallel at intervals and a buffer foam 202 disposed between two adjacent battery cells 201. Resin fiberglass boards 204 are provided at both ends of the battery cell group. The resin fiberglass boards 204 are used to support the battery cell group and can also provide insulation protection for the battery cell group. The fiberglass tape 203 is wound around the battery cell group and the resin fiberglass boards 204 at both ends thereof for pre-tightening the battery cell group and the resin fiberglass boards 204. When assembling the battery cell module 200, first, a plurality of battery cells 201 and a plurality of buffer foams 202 are alternately stacked to form a battery cell group, then a resin fiberglass board 204 is attached to both ends of the battery cell group, and then the fiberglass tape 203 is used to wind and tighten it.

[0059] Figure 5 The structural schematic diagram of the box body 1 provided by the present application is shown. Figure 6 The cross-sectional schematic diagram of the battery pack provided by the present application is shown. As Figures 5 to 6 Combined with Figures 1 to 2 As shown, in order to fix the battery cell module 200 in the outer shell 100, the battery pack further includes an insulating support member 300. Insulating support members 300 are provided on the bottom wall 11 and the surrounding wall 12 of the box body 1. Further, two insulating support members 300 are provided at intervals along the length direction of the bottom wall 11 of the box body 1. Two insulating support members 300 are provided at intervals along the length direction on both the left side wall and the right side wall of the surrounding wall 12 of the box body 1. One insulating support member 300 is provided on both the upper side wall and the lower side wall of the surrounding wall 12 of the box body 1. In this way, the insulating support member 300 can support the periphery of the battery cell module 200, and at the same time, the insulation isolation between the battery cell module 200 and the box body 1 can be realized.

[0060] The battery pack further includes an insulating member 400. There is a gap between the battery cell module 200 and the inner wall of the outer shell 100 of the battery pack. The insulating member 400 is formed by filling a flowing insulating material into the gap and then curing. The insulating material can be selected from potting glue or foaming glue. By filling foaming glue or potting glue between the battery cell module 200 and the outer shell 100, and waiting for the foaming glue or potting glue to cure to form the insulating member 400, the insulating member 400 can not only fix the battery cell module 200 in the outer shell 100, but also provide insulating support for the battery cell module 200, improve the protection ability of the outer shell 100 to the battery cell module 200, and improve the safety of the battery pack.

[0061] The battery pack provided by the present application is locked on the sides of the box body 1 and the box cover 2 of the outer shell 100, and short bolts can be used for connection, which not only improves the assembly efficiency but also ensures the bolt strength; through the design of the fiberglass tape 203 in cooperation with the insulating member 400, the battery cell module 200 can be stably installed in the outer shell 100, improving the protection ability of the outer shell 100 for the battery cell module 200; since the outer shell 100 is a metal outer shell, by arranging the insulating support member 300 between the battery cell module 200 and the inner wall of the outer shell 100, not only can the insulation isolation between the outer shell 100 and the battery cell module 200 be ensured, but also the insulating support member 300 can provide buffer support for the battery cell module 200, improving the safety of the battery cell module 200.

[0062] The foregoing has shown and described the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by using equivalent substitution or equivalent transformation fall within the protection scope of the present application.

Claims

1. A battery pack housing, characterized in that: include: A box body (1) comprises a bottom wall (11) and a surrounding wall (12) arranged around the bottom wall (11) and extending in a direction away from the bottom wall (11), wherein one end of the surrounding wall (12) away from the bottom wall (11) has a first connection hole (121) penetrating in the thickness direction of the surrounding wall (12), and a plurality of the first connection holes (121) are arranged at intervals along the surrounding side of the surrounding wall (12); A box cover (2), comprising a cover portion (21) and a fixing portion (22) arranged around the cover portion (21) and extending in a direction away from the cover portion (21), wherein the fixing portion (22) has a plurality of second connection holes (221) arranged at intervals along the cover portion (21) and penetrating the thickness direction thereof, and the second connection holes (221) can be connected to the first connection holes (121) in a one-to-one correspondence; A fastener (4), wherein the first connecting hole (121) and the second connecting hole (221) that are in communication with each other are fixedly connected via the fastener (4).

2. The battery pack casing according to claim 1, characterized in that: The fixing portion (22) can extend into the surrounding wall (12), and the fastener (4) passes through the first connecting hole (121) and is threadedly connected to the second connecting hole (221); or the fixing portion (22) can be sleeved outside the surrounding wall (12), and the fastener (4) passes through the second connecting hole (221) and is threadedly connected to the first connecting hole (121).

3. The battery pack casing according to claim 2, characterized in that: When the fixing portion (22) is extended into the surrounding wall (12), a step surface (23) is provided at a connection between the fixing portion (22) and the cover portion (21); when the fixing portion (22) is extended into the surrounding wall (12), an end surface of the surrounding wall (12) contacts the step surface (23), and a width D1 of the step surface (23) is not less than a thickness D2 of the surrounding wall (12); or when the fixing portion (22) is sleeved outside the surrounding wall (12), the surrounding wall (12) has a step surface; when the fixing portion (22) is sleeved outside the surrounding wall (12), an end surface of the fixing portion (22) contacts the step surface, and a width D1 of the step surface is not less than a thickness D2 of the surrounding wall (12).

4. The battery pack casing according to claim 1, characterized in that: The box cover (2) further comprises an integrated portion (24), wherein the integrated portion (24) is connected to a side of the cover (21) away from the fixing portion (22) and cooperates with the cover (21) to form a receiving cavity for receiving a battery control system.

5. The battery pack casing according to claim 1, characterized in that: The fastener (4) comprises a first connecting member (41) and a second connecting member (42), wherein the first connecting member (41) has a threaded hole and is located inside the battery pack shell, and the second connecting member (42) has a threaded portion threadedly connected to the threaded hole and is located outside the battery pack shell.

6. The battery pack casing according to any one of claims 1 to 5, characterized in that: The housing further comprises a handle (3), both ends of the handle (3) are fixed on the surrounding wall (12), and the middle of the handle (3) comprises a handle portion for a user to hold.

7. A battery pack, characterized in that: It comprises a battery cell module (200) and a battery pack casing as claimed in any one of claims 1 to 6, wherein the battery cell module (200) is installed in the battery pack casing.

8. The battery pack according to claim 7, characterized in that: The battery pack further comprises an insulating support member (300), and the insulating support member (300) is disposed on the bottom wall (11) and the surrounding wall (12) of the box body (1).

9. The battery pack according to claim 7, characterized in that: The battery pack further comprises an insulating member (400), a gap is provided between the battery cell module (200) and the inner wall of the battery pack housing, and the insulating member (400) is formed by filling the gap with a flowing insulating material and then solidifying it.

10. A two-wheeled electric vehicle, characterized in that: It comprises a vehicle body and a battery pack as described in any one of claims 7 to 9, wherein the battery pack is mounted on a pedal of the vehicle body.

Images