CN218525674U - Battery box for electric bicycle and electric bicycle - Google Patents

Abstract

The application provides a battery box for an electric bicycle and the electric bicycle, and relates to the field of vehicles, the battery box comprises a bottom shell, a cover plate, a battery module and a hollow sealing ring, wherein the cover plate is connected with the bottom shell, the cover plate and the bottom shell jointly define an accommodating cavity, and the battery module is arranged in the accommodating cavity; the hollow sealing ring is arranged between the bottom shell and the cover plate and used for sealing the connecting position of the bottom shell and the cover plate. The battery box adopts the hollow sealing ring to improve the sealing effect, reduce the failure rate and reduce the operation cost; moreover, the cover plate can be quickly opened by the battery box, and meanwhile, the waterproof sealing performance can be guaranteed.

Description

Battery box for electric bicycle and electric bicycle

Technical Field

The utility model relates to a vehicle field particularly, relates to a battery case and electric bicycle for electric bicycle.

Background

The electric bicycle is a vehicle which takes a storage battery as auxiliary energy and is provided with an electric motor, a controller, the storage battery, a rotating handle, a brake handle and other operating components and a display instrument system on the basis of a common bicycle. At present, in the electric bicycle use, the battery base plate adopts detachably connected mode to locate on the bicycle tube, when the electric quantity of battery is lower, needs the battery of renewal, and at this moment, need follow the car tube with the battery and dismantle. In the conventional patent, for example, CN202021829283.8, when the battery needs to be disassembled, the cover body is opened and then replaced. However, in the prior art, because the sealing effect between the upper cover and the lower cover is poor, the battery is placed in the cavity formed by the upper cover and the lower cover, and the upper cover and the lower cover are opened for multiple times, the problem of sealing failure is easy to occur, so that the service life of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery case and electric bicycle for electric bicycle, it can strengthen the leakproofness between drain pan and the apron, and sealed difficult inefficacy, the safety in utilization is high, and the fault rate is low.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a battery box for electric bicycle, including:

the battery module comprises a bottom shell, a cover plate, a battery module and a hollow sealing ring, wherein the cover plate is connected with the bottom shell, the cover plate and the bottom shell jointly define an accommodating cavity, and the battery module is arranged in the accommodating cavity; the hollow sealing ring is arranged between the bottom shell and the cover plate and used for sealing the connecting position of the bottom shell and the cover plate.

In an alternative embodiment, a plurality of cavities arranged at intervals are arranged in the hollow sealing ring.

In an alternative embodiment, each of the cavities is provided as an annular cavity extending in the circumferential direction of the hollow sealing ring.

In an alternative embodiment, the orthographic projections of the cavities in the direction of extension of the axis of the hollow sealing ring coincide.

In an alternative embodiment, the cavity has a cross-sectional shape of a circle, an ellipse or a polygon, wherein the axis of the hollow sealing ring is located on the cross-section.

In an alternative embodiment, the bottom case is movably connected to the cover plate, and the cover plate is used for opening or closing an opening of the bottom case.

In an alternative embodiment, a first side of the cover plate is rotatably connected with the bottom case, and a second side of the cover plate, opposite to the first side, is detachably connected with the bottom case through a snap structure.

In an optional embodiment, a fixture block is arranged on the cover plate; the buckle structure comprises a clamping plate, a first rotating shaft, a connecting body and a second rotating shaft, wherein the connecting body is rotatably connected with the bottom shell through the first rotating shaft, the second rotating shaft is connected with the connecting body, and the second rotating shaft and the first rotating shaft are arranged at intervals; the clamping plate is rotatably connected with the second rotating shaft, the clamping plate is provided with a first position and a second position which are mutually switched, and the clamping plate is clamped with the clamping block when located at the first position; when being in the second position, the cardboard with the fixture block separation.

In a second aspect, the present invention provides an electric bicycle, the electric bicycle includes:

a frame and a battery pack for an electric bicycle according to any one of the above embodiments, wherein the bottom case is connected to the frame.

In an alternative embodiment, the bottom case is rotatably connected to the frame.

The embodiment of the utility model provides a beneficial effect is:

in summary, the battery box for electric bicycle that this embodiment provided is provided with hollow seal ring in the hookup location department of drain pan and apron, and hollow seal ring pressurized deformation back can form annular sealing strip between drain pan and apron to effectively fill the clearance of the hookup location department of drain pan and apron, play sealed effect. Due to the adoption of the hollow sealing ring, the hollow sealing ring has better deformation capacity compared with a solid sealing ring, can generate larger compression amount when being pressed, and can easily generate elastic deformation and displacement when being pressed, so that an assembly gap formed between the bottom shell and the cover plate can be effectively filled, and a good sealing effect is achieved. And because the hollow seal ring has strong deformation capability and fatigue resistance, the cover plate and the bottom shell can also have good sealing effect after being disassembled and assembled for many times. That is to say, this battery case can not only swiftly open the apron, and the waterproof sealing nature, safe and reliable in utilization can also be guaranteed simultaneously to the battery dismouting of being convenient for.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural view of a battery pack for an electric bicycle according to an embodiment of the present invention;

FIG. 2 is an exploded view of a battery pack for an electric bicycle according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a battery pack for an electric bicycle according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a buckle structure according to an embodiment of the present invention;

fig. 5 is a partial schematic structural view of a battery pack for an electric bicycle according to an embodiment of the present invention.

An icon:

100-a bottom shell; 110-a groove; 120-annular convex strips; 130-a positioning groove; 140-mounting the convex body; 200-a cover plate; 210-an annular spacing groove; 220-a fixture block; 300-hollow sealing ring; 310-a cavity; 400-a snap-fit structure; 410-a card board; 420-a first shaft; 430-a linker; 440-a second shaft; 500-connecting the rotating shaft.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

At present, the last battery assembly of electric bicycle is in the battery case, and the battery case generally is split type structure, and including main casing and shrouding, the main casing has the storage tank, and the shrouding is connected with main casing detachably for seal or open the notch of storage tank, the battery is accomodate in the storage tank. In order to improve the sealing performance, a solid sealing ring is arranged between the main shell and the sealing plate, is positioned on the end face where the notch of the accommodating groove is positioned, and is extruded by the cover plate 200 and the main shell to deform, so that sealing is realized. The solid sealing ring has poor elastic deformation capability and poor sealing effect.

In view of this, the designer provides a battery box for an electric bicycle, which improves the sealing effect, reduces the failure rate, and reduces the operation cost by using the hollow sealing ring 300.

Referring to fig. 1-5, in the present embodiment, the battery box for the electric bicycle includes a bottom case 100, a cover plate 200, a battery module (not shown) and a hollow sealing ring 300, wherein the cover plate 200 is connected to the bottom case 100 and defines an accommodating cavity, and the battery module is disposed in the accommodating cavity; the hollow sealing ring 300 is provided between the bottom case 100 and the cover plate 200 to seal a connection position of the bottom case 100 and the cover plate 200.

In this embodiment, hollow sealing ring 300 is disposed at the connecting position of bottom case 100 and cover plate 200, and hollow sealing ring 300 is deformed under pressure to form an annular sealing band between bottom case 100 and cover plate 200, so as to adapt to the annular connecting position between bottom case 100 and cover plate 200, thereby effectively filling the gap at the connecting position of bottom case 100 and cover plate 200 and performing a sealing function. Due to the adoption of the hollow seal ring 300, compared with a solid seal ring, the hollow seal ring 300 has better deformation capacity, can generate larger compression amount when being pressed, and is easy to generate elastic deformation and displacement when being pressed, so that an assembly gap formed between the bottom shell 100 and the cover plate 200 can be effectively filled, and a good sealing effect is achieved. And because the hollow seal ring 300 has strong deformation capability and fatigue resistance, a good sealing effect can be achieved after the cover plate 200 and the bottom shell 100 are disassembled and assembled for many times. Meanwhile, the hollow sealing ring 300 consumes less materials, and the material cost is saved.

Referring to fig. 2, in the present embodiment, optionally, the bottom case 100 is provided with a groove 110, the cover 200 is installed on the bottom case 100 to close or open the notch of the groove 110, and when the cover 200 closes the notch of the groove 110, the cover 200 and the bottom case 100 jointly define an accommodating cavity.

Optionally, an end surface of the bottom case 100 corresponding to the notch of the groove 110 is provided with an annular rib 120. The side of the bottom chassis 100 is provided with two positioning grooves 130. One side of the positioning groove 130 extends to an end surface of the bottom chassis 100 corresponding to the notch of the groove 110. Two positioning grooves 130 are arranged side by side on the bottom case 100. Specifically, bottom housing 100 is a substantially rectangular housing, i.e., bottom housing 100 has a substantially rectangular ring-shaped cross-sectional profile. The two positioning grooves 130 are arranged side by side in the length direction of the bottom chassis 100. The notch of the groove 110 is located on one end surface in the height direction of the bottom chassis 100. Meanwhile, a connection rotation shaft 500 is further provided on the bottom case 100. The connection shaft 500 may be rotatably connected with the bottom case 100 through a bearing.

Referring to fig. 2 and 3, in the present embodiment, the cover plate 200 is a substantially rectangular cover, a plate surface of the cover plate 200 is provided with an annular limiting groove 210, the cover plate 200 has a first side and a second side opposite to each other, and the first side is rotatably connected to the bottom case 100 through at least one connecting rotating shaft 500. Two clamping blocks 220 are arranged side by side on the second side. The cover plate 200 can rotate with respect to the bottom chassis 100 to switch between a first position to open the notches of the grooves 110 and a second position to close the notches of the grooves 110. Moreover, when the cover plate 200 closes the opening of the groove 110, the annular limiting groove 210 on the cover plate 200 is engaged with the annular protruding strip 120, and the hollow sealing ring 300 is embedded in the annular limiting groove 210, so that the hollow sealing ring 300 can be extruded to generate elastic deformation by the cooperation of the annular protruding strip 120 and the cover plate 200, and the hollow sealing ring 300 is tightly attached to the inner side groove wall and the outer side groove wall of the annular protruding strip 120 and the annular limiting groove 210, thereby realizing sealing. By providing the annular protruding strip 120, the contact area between the hollow sealing ring 300 and the bottom case 100 can be increased, so that the sealing surface is increased, and the sealing effect is improved.

Referring to fig. 1, fig. 4 and fig. 5, in this embodiment, optionally, the battery box for the electric bicycle further includes a fastening structure 400. The latch 220 of the cover plate 200 and the bottom chassis 100 are detachably connected by the latch structure 400. It should be noted that, the number of the fastening structures 400 is two, and the structures are the same, and each fastening structure 400 is correspondingly disposed at one positioning groove 130 and is matched with one corresponding fixture block 220.

Optionally, the fastening structure 400 includes a fastening plate 410, a first rotating shaft 420, a connecting body 430 and a second rotating shaft 440. Each positioning groove 130 is internally provided with an installation convex body 140, the installation convex body 140 is provided with an assembly through hole, the first rotating shaft 420 penetrates through the assembly through hole, and the connecting body 430 is rotatably connected with the installation convex body 140 through the first rotating shaft 420. For example, the first rotating shaft 420 may be provided to be rotatably coupled with the mounting protrusion 140, or the coupling body 430 may be provided to be rotatably coupled with the first rotating shaft 420. Meanwhile, the second rotating shaft 440 is connected to the connecting body 430, and the second rotating shaft 440 and the first rotating shaft 420 are arranged in parallel at intervals. The clamping plate 410 is rotatably connected with the second rotating shaft 440, the clamping plate 410 has a first position and a second position which are mutually switched, and when the clamping plate 410 is located at the first position, the clamping plate 410 is clamped with the fixture block 220; in the second position, card plate 410 is separated from card block 220.

Specifically, the clamping of the clamping plate 410 and the clamping block 220 is taken as an initial state for explanation. When the locking plate 410 needs to be opened, a force is applied to one side of the locking plate 410 away from the cover plate 200 to rotate the locking plate upward, so as to drive the connecting body 430 to turn upward relative to the bottom case 100, thereby separating the locking plate 410 from the locking block 220. Then, when the locking plate 410 needs to be locked, the locking plate 410 contacts with the locking block 220, and then one side of the locking plate 410 away from the cover plate 200 is pressed, so that the locking plate 410 drives the connecting body 430 to rotate inwards and move downwards together, thereby locking the locking plate 410 and the locking plate 410.

It should be understood that the snap structure 400 can also adopt the existing known structure, and the detailed description is not provided in the embodiment in order to avoid the repetitive encumbrance of the description.

In addition, when the clamping plate 410 is used to lock the cover plate 200 and the bottom case 100, the locking force between the clamping plate 410 and the cover plate 200 is transmitted to the hollow sealing ring 300, so that the hollow sealing ring 300 is pressed by the cooperation of the cover plate 200 and the bottom case 100, and the hollow sealing ring 300 is elastically deformed to achieve sealing.

In this embodiment, optionally, the shape of the hollow sealing ring 300 matches the shape of the annular retaining groove 210, for example, the hollow sealing ring 300 is a substantially rectangular ring. The number of cavities 310 in the hollow seal ring 300 may be plural, for example, in the present embodiment, the number of cavities 310 is two and each is an annular cavity, and both annular cavities extend in the circumferential direction of the hollow seal ring 300, that is, the annular cavities are arranged around the axis of the hollow seal ring 300. And, two annular chambers are arranged at an interval in the axis extending direction of hollow seal ring 300, and further, the orthographic projections of two annular chambers in the axis extending direction of hollow seal ring 300 coincide, and hollow seal ring 300 structure is regular, and the manufacturing of being convenient for, and deformability is unanimous basically, warp in order, is difficult for having sealed dead angle. Meanwhile, by providing two annular chambers, the hollow seal ring 300 is more easily deformed, and is more closely contacted with the bottom case 100 and the cover plate 200, resulting in a good sealing effect.

Further, the cross-sectional shape of the cavity 310 may be circular, oval, polygonal, etc., wherein the axis of the hollow seal ring 300 is located on the cross-section, i.e., the cross-section is perpendicular to a plane perpendicular to the axis of the hollow seal ring 300, and the axis of the hollow seal ring 300 falls into the plane of the cross-section.

In this embodiment, battery case for electric bicycle's sealed effectual, the battery module is arranged in the holding chamber and is difficult for receiving the pollution, long service life.

The present embodiment further provides an electric bicycle, which includes a frame and the battery box for an electric bicycle, wherein the bottom case 100 is connected to the frame (not shown). For example, the bottom case 100 is connected to a vehicle pipe at a middle position of a vehicle frame, and the battery cartridges are arranged along a length direction of the vehicle pipe, so that a protruding length of the battery cartridges is minimized.

Optionally, the bottom case 100 is rotatably connected to the frame, and when the cover plate 200 needs to be opened to detach the battery module, the bottom case 100 is rotated relative to the frame, so that the cover plate 200 is exposed outside the frame, which is convenient for operation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery pack for an electric bicycle, comprising:

the battery pack comprises a bottom shell (100), a cover plate (200), a battery module and a hollow sealing ring (300), wherein the cover plate (200) is connected with the bottom shell (100) and defines an accommodating cavity together, and the battery module is arranged in the accommodating cavity; the hollow sealing ring (300) is arranged between the bottom shell (100) and the cover plate (200) and used for sealing the connection position of the bottom shell (100) and the cover plate (200).

2. The battery pack for the moped according to claim 1, wherein:

a plurality of cavities (310) which are arranged at intervals are arranged in the hollow sealing ring (300).

3. The battery pack for the electric bicycle according to claim 2, wherein:

each cavity (310) is provided as an annular cavity extending in the circumferential direction of the hollow sealing ring (300).

4. The battery pack for the moped according to claim 2, wherein:

orthographic projections of the cavities (310) in the axial extension direction of the hollow sealing ring (300) are overlapped.

5. The battery pack for the moped according to claim 2, wherein:

the cross-sectional shape of the cavity (310) is circular, oval or polygonal, wherein the axis of the hollow sealing ring (300) is located on the cross section.

6. The battery pack for the electric bicycle according to claim 1, wherein:

the bottom case (100) is movably connected with the cover plate (200), and the cover plate (200) is used for opening or closing the opening of the bottom case (100).

7. The battery pack for the electric bicycle according to claim 6, wherein:

the first side of the cover plate (200) is rotatably connected with the bottom case (100), and the second side of the cover plate (200) opposite to the first side is detachably connected with the bottom case (100) through a buckle structure (400).

8. The battery pack for the electric bicycle according to claim 7, wherein:

a clamping block (220) is arranged on the cover plate (200); the buckle structure (400) comprises a clamping plate (410), a first rotating shaft (420), a connecting body (430) and a second rotating shaft (440), wherein the connecting body (430) is rotatably connected with the bottom shell (100) through the first rotating shaft (420), the second rotating shaft (440) is connected with the connecting body (430), and the second rotating shaft (440) and the first rotating shaft (420) are arranged at intervals; the clamping plate (410) is rotatably connected with the second rotating shaft (440), the clamping plate (410) is provided with a first position and a second position which are mutually switched, and when the clamping plate (410) is located at the first position, the clamping plate (410) is clamped with the clamping block (220); when the clamping plate is located at the second position, the clamping plate (410) is separated from the clamping block (220).

9. An electric bicycle, characterized in that the electric bicycle comprises:

frame and battery pack for electric bicycles of any of claims 1 to 8, to which said bottom shell (100) is connected.

10. The electric bicycle according to claim 9, wherein:

the bottom shell (100) is rotatably connected with the frame.

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