Battery hub structure, wheel and vehicle

Abstract

The utility model relates to a battery hub structure, a wheel and a vehicle, the battery hub structure is matched with the wheel, the battery hub structure comprises: a hub shell, which is arranged at the axial center position of the wheel and is internally provided with a battery cavity; the middle shaft assembly is rotatably inserted into the axial middle part of the hub shell; and the battery assembly is assembled in the battery cavity and fixedly connected with the middle shaft assembly, and the battery assembly and the battery cavity do not generate rotation interference. According to the utility model, the hidden assembly effect of the battery on the vehicle is optimized, the gravity center balance effect of the wheel and the vehicle is maintained, the upgrading or refitting of the vehicle is realized under the condition that the frame is not damaged and the attractive appearance of the frame is not influenced, and electric power is provided for additionally arranging vehicle electric drive accessories.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle accessories, in particular to a battery hub structure, a wheel and a vehicle. Background Art

[0002] Bicycles are lightweight, energy-saving and environmentally friendly, and are popular among people, becoming the fastest growing main means of transportation in recent years. Especially in the domestic market, with the rise of cycling, there is an increasing demand for bicycle modification and upgrading.

[0003] Existing modifications and upgrades to bicycles are mostly focused on adding accessories that require power support, such as electric power acceleration, mobile phone charging, electronic transmission, lighting, etc., but these accessories all require batteries to be installed on the vehicle. In order to adapt to the frames developed by vehicle manufacturers and the vehicle frames of existing users, without changing the frame, the battery is generally installed in the form of exposed body mounting. The battery is exposed and bound to the frame, which has the risk of battery theft and damage, and also affects the appearance of the body.

[0004] To this end, we propose a battery hub structure, a wheel and a vehicle. Utility Model Content

[0005] The present application provides a battery hub structure, a wheel and a vehicle, so as to at least solve the problem that in the prior art, the battery is generally installed in an exposed manner on the vehicle body, and the battery is externally bound to the frame, which on the one hand has the risk of battery theft and damage, and on the other hand also affects the appearance of the vehicle body.

[0006] In a first aspect, the present application provides a battery hub structure, which is configured with a wheel, and includes:

[0007] A hub shell, which is arranged at the axial center of the wheel and has a battery cavity inside;

[0008] A middle shaft assembly, which is rotatably inserted in the axial middle portion of the hub shell;

[0009] A battery assembly is assembled in the battery cavity and fixedly connected to the central shaft assembly, and the battery assembly and the battery cavity do not interfere with each other in rotation.

[0010] Optionally, the central shaft assembly includes:

[0011] The central axis has a first step and a second step with decreasing diameters symmetrically formed from the middle to both ends, and a mounting groove corresponding to one of the second steps;

[0012] Two rolling bearings are respectively arranged at the two second step positions, and their outer rings are connected to the hub shell, wherein one of the rolling bearings is provided with a bearing slot corresponding to the position of the assembly slot;

[0013] An electrical terminal, which is assembled in a combined groove formed by the assembly groove and the bearing groove and is electrically connected to the battery assembly;

[0014] A flange cover is threadedly assembled with a free end of the middle shaft to locate the assembly position of the middle shaft on the hub shell.

[0015] Optionally, the flange cover is further provided with a joint end, and a wire having a first end connected to an electrical terminal is passed through the joint end.

[0016] Optionally, the battery assembly comprises:

[0017] There are several battery cells arranged in parallel;

[0018] Two battery cover plates are symmetrically arranged at both ends of the positive / negative electrodes of the plurality of battery cells, and have terminal pieces respectively connected to the positive / negative electrodes of the plurality of battery cells;

[0019] Connectors, the number of which is several, are arranged between the two battery covers so that the two battery covers are fastened and assembled with the central axis and the several battery cells are clamped and fixed;

[0020] A battery control board is arranged on one of the battery covers and electrically connected to the two terminal pieces and the power connection terminal.

[0021] Optionally, a central groove for clamping and positioning with the two first steps is provided in the middle of the opposite sides of the two battery cover plates.

[0022] Optionally, the connecting member includes:

[0023] An assembly column is vertically arranged on the opposite sides of the two battery cover plates;

[0024] There are two flat screws, which are threadedly assembled at both ends of the assembly column to fasten and assemble the two battery cover plates through the assembly column.

[0025] Optionally, the hub shell comprises:

[0026] A housing having an open battery cavity;

[0027] A cover plate, which is fixedly assembled to the opening by bolts to close the opening of the battery cavity;

[0028] There are two annular extension edges, which are integrally formed on both axial sides of the shell and are provided with a plurality of first spoke holes distributed in an annular array.

[0029] Optionally, a disc assembly portion for mounting a brake disc is integrally formed in the axial middle portion of the housing.

[0030] In a second aspect, the present application provides a wheel, comprising the battery hub structure mentioned in the first aspect, and:

[0031] A wheel rim, which is arranged outside the battery hub structure and is coaxially arranged with the battery hub structure;

[0032] There are a plurality of spokes, and two ends of the spokes are respectively connected to the first spoke hole and the second spoke hole opened on the rim to support the rim.

[0033] In a third aspect, the present application provides a vehicle comprising the battery hub structure mentioned in the first aspect, or the wheel mentioned in the second aspect.

[0034] Compared with the related art, the battery hub structure, wheel and vehicle provided by the present application have at least the following technical effects:

[0035] By fixing the hub shell in the axial middle part of the wheel and rotatably assembling the middle shaft assembly in the axial middle part of the hub shell, the battery assembly is arranged in the battery cavity of the hub shell and fixedly assembled with the middle shaft assembly. In this way, the hidden assembly effect of the battery on the vehicle is optimized, and the battery cells are arranged around the middle shaft assembly, thereby maintaining the center of gravity balance of the wheel and the vehicle. Furthermore, the battery hub structure of the present application can be replaced by directly replacing the middle shaft in the middle of the wheel, thereby achieving vehicle upgrades or modifications without damaging the frame and affecting the appearance of the frame, and providing power for the installation of lighting, electric transmissions and other electric drive accessories.

[0036] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 is a three-dimensional diagram of a battery hub structure in a first state according to an exemplary embodiment.

[0039] Figure 2 is a stereoscopic diagram of a battery hub structure in a second state according to an exemplary embodiment.

[0040] Figure 3 is an exploded diagram of a battery hub structure in a first state according to an exemplary embodiment.

[0041] Figure 4 is an exploded diagram of a battery hub structure in a second state according to an exemplary embodiment.

[0042] Figure 5 is a structural exploded diagram of a central axis member according to an exemplary embodiment.

[0043] Figure 6 is a cross-sectional view of a battery hub structure according to an exemplary embodiment.

[0044] Description of reference numerals:

[0045] The hub shell 10 includes a shell 101, a cover plate 102, an annular extension edge 103, a first spoke hole 104, and a disc assembly portion 105;

[0046] Central shaft assembly 20: central shaft 201, first step 202, second step 203, assembly groove 204, bearing groove 2041, power terminal 205, rolling bearing 206, flange cover 207, interface end 208;

[0047] Battery assembly 30: battery cell 301, battery cover 302, connector 303, battery control board 304. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In related technologies, the modification and upgrading of bicycles are mostly focused on adding accessories that require power support, such as electric power acceleration, mobile phone charging, electronic transmission, lighting, etc., but these accessories all require batteries to be installed on the vehicle. In order to adapt to the frames developed by vehicle manufacturers and the vehicle frames of existing users, without changing the frame, the battery is generally installed in the form of exposed body mounting. The battery is exposed and bound to the frame, which has the risk of battery theft and damage, and also affects the appearance of the body.

[0052] Based on the above situation, an embodiment of the utility model provides a battery hub structure, a wheel and a vehicle, which are described in detail below in conjunction with specific embodiments and drawings.

[0053] Example 1

[0054] An embodiment of the utility model provides a battery hub structure. Figure 1 is a three-dimensional diagram of a battery hub structure in a first state according to an exemplary embodiment. Figure 2 is a stereoscopic diagram of a battery hub structure in a second state according to an exemplary embodiment. Figure 3 is an exploded diagram of a battery hub structure in a first state according to an exemplary embodiment. Figure 4 FIG. 1 is an exploded view of a battery hub structure in a second state according to an exemplary embodiment. Figure 1-4 As shown, the battery hub structure is arranged with a wheel. Specifically, the battery hub structure is arranged at the axial center position of the wheel, and includes:

[0055] The hub shell 10 is arranged at the axial center of the wheel and has a battery cavity therein;

[0056] Refer to the attached Figure 1-4 In this embodiment, the hub shell 10 includes: a shell 101, which is provided with an open battery cavity; a cover plate 102, which is fixedly assembled to the opening by bolts to close the opening of the battery cavity; two annular extension edges 103, which are integrally formed on both axial sides of the shell 101 and are provided with a plurality of first spoke holes 104 distributed in an annular array;

[0057] The middle shaft assembly 20 is rotatably inserted in the axial middle portion of the hub shell 10;

[0058] Figure 5 FIG. 1 is a structural exploded view of a central shaft according to an exemplary embodiment. Figure 1-5 In this embodiment, the middle shaft assembly 20 includes: a middle shaft 201, which is symmetrically provided with a first step 202 and a second step 203 of decreasing diameters from the middle to both ends, and a mounting groove 204 is provided corresponding to one of the second steps 203; two rolling bearings 206, which are respectively arranged at the two second steps 203, and whose outer rings are connected to the hub shell 10, and one of the rolling bearings 206 is provided with a bearing groove 2041 corresponding to the mounting groove 204; an electrical terminal 205, It is assembled in the combined groove formed by the assembly groove 204 and the bearing groove 2041 and is electrically connected to the battery assembly 30. Furthermore, one of the rolling bearings 206 corresponding to the position of the power terminal 205 is larger in size, so that a bearing groove 2041 corresponding to the assembly groove 204 is provided on its inner ring to match the bearing groove 204. The bearing groove 2041 cooperates with the assembly groove 204 to accommodate the assembly power terminal 205. The flange cover 207 is threadedly assembled with a free end of the middle shaft 201 to locate the assembly position of the middle shaft 201 on the hub shell 10.

[0059] For further information, please refer to the attached Figure 5 The inner end of the flange cover 207 is provided with a slot that matches and plugs into the upper end of the power terminal 205, so as to facilitate quick assembly;

[0060] The battery assembly 30 is assembled in the battery cavity and fixedly connected to the central shaft assembly 20, and the battery assembly 30 and the battery cavity do not interfere with each other in rotation.

[0061] Continue to refer to the attached Figure 1-4 The battery assembly 30 includes: a plurality of battery cells 301 arranged in parallel; two battery cover plates 302 symmetrically arranged at the positive / negative ends of the plurality of battery cells 301, and having terminal pieces respectively connected to the positive / negative poles of the plurality of battery cells 301. It can be further understood that, depending on the output voltage and capacity requirements of the battery assembly 30, the plurality of battery cells 301 can be arranged in the same pole or in different poles, and the connection of the battery cells 301 can be connected in series, in parallel, or in combination of series and parallel; a plurality of connectors 303 arranged between the two battery cover plates 302 so that the two battery cover plates 302 are fastened and assembled with the central axis 201 and the plurality of battery cells 301 are clamped and fixed; a battery control board 304 arranged on one of the battery cover plates 302 and electrically connected to the two terminal pieces and the power terminal 205; wherein the middle portions of the two battery cover plates 302 facing each other are provided with central grooves for clamping and positioning with the two first steps 202.

[0062] In the technical solution of the above embodiment, Figure 6 is a cross-sectional view of a battery hub structure according to an exemplary embodiment. Figure 6 The two battery covers 302 are clamped and limited at the first step 202 of the central axis 201 by a plurality of connecting members 303, and a plurality of battery cells 301 are clamped and fixed, so that the plurality of battery cells 301 are connected in series to form an integral battery. At the same time, the power terminal 205 is hidden and assembled in the assembly groove 204, and connects the battery, the battery control board 304 and the external wire; the hub shell 10 is arranged in the middle of the wheel, and rotates around the central axis 201 and the rolling bearing member 206 at its axial center position as the vehicle travels, that is, the hub shell 10 rotates relative to the central axis assembly 20 and the battery assembly 30; the non-rotating battery assembly 30 can supply power to various units of the vehicle, such as the electric transmission, the lighting or further such as the hub motor.

[0063] It can be understood that, preferably, the battery hub structure in this embodiment is installed at the front wheel of the vehicle to shorten the length of the wire, and is connected to the electric transmission and the lighting lamp generally installed at the handlebar. Furthermore, the wire can be inserted into the front fork tube to hide the wiring and increase the aesthetics.

[0064] Optionally, continue to refer to the attached Figure 5 The flange cover 207 is also provided with an interface end 208, and a wire having a first end connected to the power terminal 205 is inserted into the interface end 208. In this embodiment, refer to the attached Figure 5 The interface end 208 is a DC interface. When connected, the DC connector of the accessory can be quickly plugged into the DC interface to provide power to the electric drive accessory. Furthermore, the DC interface can also be connected to the DC connector of the charger to charge the battery assembly 30.

[0065] Optionally, continue to refer to the attached Figure 3-4 The connecting member 303 includes: an assembly column, which is vertically arranged on the opposite sides of the two battery cover plates 302; two flat base screws, which are threadedly assembled at both ends of the assembly column to fasten and assemble the two battery cover plates 302 through the assembly column;

[0066] It is understandable that the length of the assembly column is adapted to the height of the battery cell 301 , and the battery assembly 30 is fixed to the central shaft assembly 20 by clamping and fixing the battery cell 301 and cooperating with the first step 202 .

[0067] Optionally, continue to refer to the attached Figure 1 A disc assembly portion 105 for mounting a brake disc is integrally formed in the axial middle portion of the housing 101, and a portion for mounting the brake disc is reserved to improve the fit.

[0068] In summary, the battery hub structure provided in the embodiment of the utility model is fixedly assembled coaxially by the hub shell 10 in the axial middle part of the wheel, and the middle shaft assembly 20 is rotationally assembled in the axial middle part of the hub shell 10, and the battery assembly 30 is arranged in the battery cavity of the hub shell 10 and fixedly assembled with the middle shaft assembly 20. In this way, the hidden assembly effect of the battery on the vehicle is optimized, and the battery cells are arranged around the middle shaft assembly 20, so as to maintain the center of gravity balance effect of the wheel and the vehicle. Furthermore, the battery hub structure of the present application can be replaced by directly replacing the middle shaft in the middle of the wheel, so as to achieve the upgrade or modification of the vehicle without damaging the frame and affecting the appearance of the frame, and provide power for the installation of lighting, electric transmission and other electric drive accessories.

[0069] Example 2

[0070] Embodiment 2 of the present utility model provides a wheel, comprising the battery hub structure mentioned in embodiment 1 above, and:

[0071] A wheel rim is arranged outside the battery hub structure and is coaxially arranged with the battery hub structure;

[0072] There are a plurality of spokes, and two ends of the spokes are respectively connected to the first spoke hole 104 and the second spoke hole opened on the rim to support the rim.

[0073] For other structures not described, refer to Example 1.

[0074] It can be further understood that the hub shell 10 of the battery hub structure can also be fixedly connected to the wheel rim by other means, such as one-piece molding, wheel hub embedding, etc.

[0075] In summary, the battery hub structure and wheel provided in the embodiment of the utility model are fixedly assembled coaxially in the axial middle part of the wheel by the hub shell 10, and the middle shaft assembly 20 is rotationally assembled in the axial middle part of the hub shell 10, and the battery assembly 30 is arranged in the battery cavity of the hub shell 10 and fixedly assembled with the middle shaft assembly 20. In this way, the hidden assembly effect of the battery on the vehicle is optimized, and the battery cells are arranged around the middle shaft assembly 20, maintaining the center of gravity balance effect of the wheel and the vehicle. Furthermore, the battery hub structure of the present application can be replaced by directly replacing the middle shaft in the middle of the wheel, so as to achieve the upgrade or modification of the vehicle without damaging the frame and affecting the appearance of the frame, and provide power for the installation of lighting, electric transmission and other electric drive accessories.

[0076] Example 3

[0077] Embodiment 3 of the present utility model provides a vehicle, comprising the battery hub structure of the first aspect, or the wheel mentioned in the second aspect.

[0078] It can be understood that the vehicle in this embodiment can be a vehicle with wheels such as a bicycle, an electric bicycle, a tricycle, an electric tricycle, etc.

[0079] For other structures not described, refer to Example 1.

[0080] To sum up, the battery hub structure, wheel and vehicle provided by the embodiment of the utility model are fixedly assembled coaxially by the hub shell 10 in the axial middle part of the wheel, the middle shaft assembly 20 is rotationally assembled in the axial middle part of the hub shell 10, and the battery assembly 30 is arranged in the battery cavity of the hub shell 10 and fixedly assembled with the middle shaft assembly 20. In this way, the hidden assembly effect of the battery on the vehicle is optimized, and the battery cells are arranged around the middle shaft assembly 20, maintaining the center of gravity balance effect of the wheel and the vehicle. Furthermore, the battery hub structure of the present application can be replaced by directly replacing the middle shaft in the middle of the wheel, so as to achieve the upgrade or modification of the vehicle without damaging the frame and affecting the appearance of the frame, and provide power for the installation of lighting, electric transmission and other electric drive accessories.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A battery hub structure, which is arranged in conjunction with a wheel, characterized in that: Included are: A hub shell, which is arranged at the axial center of the wheel and has a battery cavity inside; A middle shaft assembly, which is rotatably inserted in the axial middle portion of the hub shell; A battery assembly is assembled in the battery cavity and fixedly connected to the central shaft assembly, and the battery assembly and the battery cavity do not interfere with each other in rotation.

2. The battery hub structure according to claim 1, characterized in that: The middle shaft assembly comprises: The central axis has a first step and a second step with decreasing diameters symmetrically formed from the middle to both ends, and a mounting groove corresponding to one of the second steps; Two rolling bearings are respectively arranged at the two second step positions, and their outer rings are connected to the hub shell, wherein one of the rolling bearings is provided with a bearing slot corresponding to the position of the assembly slot; An electrical terminal, which is assembled in a combined groove formed by the assembly groove and the bearing groove and is electrically connected to the battery assembly; A flange cover is threadedly assembled with a free end of the middle shaft to locate the assembly position of the middle shaft on the hub shell.

3. The battery hub structure according to claim 2, characterized in that: The flange cover is also provided with a joint end, and a wire having a first end connected to an electrical terminal is passed through the joint end.

4. The battery hub structure according to claim 2, characterized in that: The battery assembly comprises: There are several battery cells arranged in parallel; Two battery cover plates are symmetrically arranged at both ends of the positive / negative electrodes of the plurality of battery cells, and have terminal pieces respectively connected to the positive / negative electrodes of the plurality of battery cells; Connectors, the number of which is several, are arranged between the two battery covers so that the two battery covers are fastened and assembled with the central axis and the several battery cells are clamped and fixed; A battery control board is arranged on one of the battery covers and electrically connected to the two terminal pieces and the power connection terminal.

5. The battery hub structure according to claim 4, characterized in that: A central groove for clamping and positioning with the two first steps is provided in the middle of the two battery cover plates facing each other.

6. The battery hub structure according to claim 4, characterized in that: The connecting piece comprises: An assembly column is vertically arranged on the opposite sides of the two battery cover plates; There are two flat screws, which are threadedly assembled at both ends of the assembly column to fasten and assemble the two battery cover plates through the assembly column.

7. The battery hub structure according to claim 1, characterized in that: The hub shell comprises: A housing having an open battery cavity; A cover plate, which is fixedly assembled to the opening by bolts to close the opening of the battery cavity; There are two annular extension edges, which are integrally formed on both axial sides of the shell and are provided with a plurality of first spoke holes distributed in an annular array.

8. The battery hub structure according to claim 7, characterized in that: A disc assembly portion for installing a brake disc is integrally formed in the axial middle portion of the housing.

9. A wheel, characterized in that: It comprises the battery hub structure according to any one of claims 1 to 8, and, A wheel rim, which is arranged outside the battery hub structure and is coaxially arranged with the battery hub structure; There are a plurality of spokes, and two ends of the spokes are respectively connected to the first spoke hole and the second spoke hole opened on the rim to support the rim.

10. A vehicle, characterized in that: It comprises the battery hub structure according to any one of claims 1 to 8, or the wheel according to claim 9.

Images