E-bike battery system and electrically assisted bicycle

Abstract

The utility model relates to an E-bike battery system and electric power-assisted bicycle, E-bike battery system includes: cylinder, charges and discharges device, including a plurality of battery module, each battery module all sets up in the cylinder, each battery module is along the length extension direction of cylinder one by one stacked setting, each battery module all is provided with installation passageway, fixed device, including fixed link and locking piece, fixed link one by one wears each installation passageway, locking piece sets up on fixed link, and the end of fixed link and locking piece jointly hold each battery module, and heat conduction device, including end heat conduction pad and circumferential heat conduction pad, end heat conduction pad and circumferential heat conduction pad all set up in the cylinder, and end heat conduction pad bears in the end of cylinder and charges and discharges device, and circumferential heat conduction pad bears in the circumference of cylinder and charges and discharges device. Like this, can ensure that battery module firm connection, avoid the displacement risk caused by cycling vibration. Still can radiate heat fast, avoid product heat accumulation burn.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycles, and more particularly to the E-bike battery system and electric-assisted bicycle. Background Technology

[0002] Electric bicycles, as a new energy mode of transportation, have the advantages of being environmentally friendly, convenient, and suitable for short-distance commuting. Their core power system consists of a motor, controller, and lithium battery, with lithium batteries becoming the mainstream choice due to their high energy density and long cycle life. To improve the overall integrity and aesthetics of the bicycle, current mainstream designs tend to integrate the battery inside the cross tubes of the frame, creating a concealed layout.

[0003] However, the existing horizontal tube battery arrangement has certain shortcomings: First, the internal space of the horizontal tube is narrow and limited, making battery arrangement difficult. Second, the heat generated by battery charging and discharging is difficult to transfer to the horizontal tube in a timely manner, meaning that the heat cannot be quickly transferred to the outside through the horizontal tube, resulting in heat accumulation and poor heat dissipation performance. Utility Model Content

[0004] This invention provides an E-bike battery system and an electric-assisted bicycle, which can solve the problems of difficulty in arranging batteries in the horizontal tube and poor heat dissipation performance.

[0005] This utility model provides an E-bike battery system, which includes:

[0006] cylindrical body;

[0007] The charging and discharging device includes a plurality of battery modules, each of which is disposed in the cylinder. The battery modules are stacked one by one along the length extension direction of the cylinder, and each battery module is provided with an installation channel.

[0008] A fixing device includes fixing rods and locking components. The fixing rods pass through each of the mounting channels, and the locking components are disposed on the fixing rods. The ends of the fixing rods and the locking components together clamp each of the battery modules.

[0009] A heat-conducting device includes an end heat-conducting pad and a peripheral heat-conducting pad, both of which are disposed inside the cylinder. The end heat-conducting pad abuts against the cylinder and the end of the charging / discharging device, and the peripheral heat-conducting pad abuts against the cylinder and the periphery of the charging / discharging device.

[0010] Preferably, each of the battery modules includes a mounting base and a plurality of battery cells disposed on the mounting base. Each mounting base is provided with a mounting channel, and the mounting bases are stacked one by one along the length extension direction of the cylinder.

[0011] Preferably, the mounting base includes two base bodies, each base body is provided with a plurality of receiving grooves, each base body is provided with a protrusion, the protrusion having a through hole, the two base bodies are aligned and connected, the two ends of each battery cell are respectively disposed in two opposite receiving grooves, the two protrusions are aligned and abut against each other, and the two through holes are connected to form the mounting channel.

[0012] Preferably, each of the battery cells is symmetrically arranged on the mounting base.

[0013] Preferably, the protruding post is located at the center of the base.

[0014] Preferably, a plurality of reinforcing ribs are connected between the protruding post and the base.

[0015] Preferably, each of the mounting bases is provided with an alignment groove and an alignment portion;

[0016] In two adjacent mounting seats, the alignment portion on one mounting seat is inserted into the alignment slot on the other mounting seat.

[0017] Preferably, the fixing rod includes a head and a rod portion, one end of the rod portion is connected to the head, and the other end of the rod portion passes through each of the mounting channels and is screwed to the locking member.

[0018] Preferably, each of the mounting channels has a contoured groove at its end, the contoured groove being adapted to the head; and / or

[0019] The rod has a threaded hole in its length extension direction, and the locking member is threaded into the threaded hole.

[0020] Preferably, the E-bike battery system further includes a first end cap and a second end cap, wherein the first end cap is disposed at one end of the cylindrical body and the second end cap is disposed at the other end of the cylindrical body;

[0021] The first end cap is provided with a connector, which is electrically connected to each of the battery modules, and the end heat-conducting pad abuts against the second end cap.

[0022] Preferably, the cross-section of the cylinder is elliptical; and / or

[0023] The heat-conducting device includes two peripheral heat-conducting pads, which are symmetrically arranged on both sides of the charging and discharging device, and the two peripheral heat-conducting pads respectively abut against the inner wall of the cylinder.

[0024] This utility model also provides an electric-assisted bicycle, which includes a frame and the E-bike battery system described in any of the above technical solutions. A horizontal tube is provided on the frame, and the cylindrical body is inserted into the horizontal tube.

[0025] The following are the beneficial effects of implementing this utility model:

[0026] This utility model relates to an E-bike battery system and an electric-assisted bicycle, the latter including the E-bike battery system. In the electric-assisted bicycle, by setting up battery modules stacked sequentially along the length of the cylinder and a cooperating structure of fixing rods and locking components passing through the mounting channel, the battery modules are arranged in a compact axial configuration within the cylinder. This solves the problem of difficult and reasonable battery arrangement when the internal space of the horizontal tube is limited. Simultaneously, the clamping action of the fixing rods and locking components ensures a stable connection of the battery modules, avoiding the risk of displacement caused by riding vibrations.

[0027] This invention also utilizes a dual thermal conductive configuration of end thermal pads and peripheral thermal pads. By ensuring close contact between the thermal pads and the inner wall of the cylinder, the end face of the battery module, and the periphery, the working heat of the battery module is quickly transferred to the surface of the cylinder, thereby rapidly transferring the heat to the external environment and preventing the product from burning due to heat accumulation. Attached Figure Description

[0028] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0029] Figure 1 This is a schematic diagram of the E-bike battery system in some embodiments of this utility model;

[0030] Figure 2 From another perspective Figure 1 The diagram shown is a structural schematic of the E-bike battery system.

[0031] Figure 3 This is an exploded view of the E-bike battery system in some embodiments of this utility model;

[0032] Figure 4 These are schematic diagrams of the internal structure in some embodiments of this utility model;

[0033] Figure 5 This is a partial structural schematic diagram of the E-bike battery system in some embodiments of this utility model;

[0034] Figure 6 yes Figure 5 The diagram shown is a partial structural schematic of the E-bike battery system.

[0035] Figure 7 yes Figure 6 Enlarged view at point A;

[0036] Figure 8 yes Figure 6 Enlarged view at point B;

[0037] Figure 9 yes Figure 3 Enlarged view at point C;

[0038] Figure 10 yes Figure 3 Enlarged view at point D;

[0039] Figure 11 yes Figure 5 Enlarged view at point E. Detailed Implementation

[0040] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0041] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Figure 1 and Figure 2 The present invention illustrates an E-bike battery system 10 in some embodiments, which can be applied to electric-assisted bicycles to power electrical devices and components on the electric bicycle.

[0045] like Figures 1 to 4 As shown, the E-bike battery system 10 includes a casing 1, a charging / discharging device 2, a fixing device 3, and a heat-conducting device 4. The casing 1 is used to mount the other components and serves as a seal. The charging / discharging device 2 is located inside the casing 1 and is used for charging and discharging. The fixing device 3 is used to fix the charging / discharging device 2 and prevent misalignment. The heat-conducting device 4 is located between the inner wall of the casing 1 and the charging / discharging device 2, and is used to quickly transfer heat from the charging / discharging device 2 to the casing 1, allowing heat to be quickly transferred to the outside through the casing 1.

[0046] It should be noted that the internal space of the cylinder 1 is designed along its length to fit the cross tube structure of the electric-assist bicycle frame, thus achieving a concealed installation of the battery system. The outer wall of the cylinder 1 is in contact with the inner wall of the frame's cross tube.

[0047] like Figures 3 to 6 As shown, and see also Figure 9 and Figure 10 The charging and discharging device 2 includes several battery modules 21, each battery module 21 is disposed inside the cylinder 1, and each battery module 21 is stacked one by one along the length extension direction of the cylinder 1, and each battery module 21 is provided with an installation channel 22.

[0048] Understandably, the mounting channel 22 provided on each battery module 21 is used for the installation of the fixing device 3. The stacked layout of the battery modules 21 maximizes the use of the internal longitudinal space of the cylinder 1, solving the problem of loose arrangement or size limitation of traditional horizontal tube batteries. The mounting channel 22 provides a unified path for the fixing device 3 to pass through, ensuring the coaxiality of each stacked battery module 21.

[0049] like Figures 3 to 7As shown, the fixing device 3 includes a fixing rod 31 and a locking member 32. The fixing rod 31 passes through each installation channel 22 one by one, and the locking member 32 is set on the fixing rod 31. The end of the fixing rod 31 and the locking member 32 together clamp each battery module 21.

[0050] Understandably, the fixing rod 31 restricts the radial displacement of the battery module 21 by contacting the inner wall of the mounting channel 22. The locking member 32 is disposed at the end of the fixing rod 31 and forms a clamping structure with the fixing rod 31. By tightening the locking member 32, each battery module 21 is pressed along the axial direction of the fixing rod 31 to prevent the battery module 21 from loosening due to riding vibration.

[0051] like Figure 3 and Figure 4 As shown, the heat conduction device 4 includes an end heat conduction pad 41 and a peripheral heat conduction pad 42. Both the end heat conduction pad 41 and the peripheral heat conduction pad 42 are disposed inside the cylinder 1. The end heat conduction pad 41 abuts against the end of the cylinder 1 and the charging / discharging device 2, and the peripheral heat conduction pad 42 abuts against the periphery of the cylinder 1 and the charging / discharging device 2.

[0052] Understandably, the end heat-conducting pad 41 is disposed between the ends of the cylinder 1 and the charging / discharging device 2, adhering to the end face of the battery module 21, and transferring heat axially to the end of the cylinder 1. The peripheral heat-conducting pad 42 is disposed between the inner wall of the cylinder 1 and the periphery of the charging / discharging device 2, adhering to the outer peripheral surface of the battery module 21, and transferring heat radially to the side wall of the cylinder 1. Thus, the combined arrangement of the end heat-conducting pad 41 and the peripheral heat-conducting pad 42 greatly covers the end face and side face of the battery module 21, forming a multi-dimensional heat dissipation path.

[0053] It should be noted that, firstly, the axial stacking of battery modules 21 and the coaxial fixing of fixing rods 31 achieve efficient utilization of the internal space of the cylinder 1, while ensuring the structural stability of battery modules 21 under dynamic loads. Secondly, the bidirectional heat conduction of the end heat-conducting pads 41 and the peripheral heat-conducting pads 42 can quickly conduct the heat of each battery module to the surface of the cylinder 1, avoiding performance degradation caused by heat accumulation. Thirdly, the cooperation structure between the mounting channel 22 and the fixing rods 31 simplifies the multi-module series installation process, and the single-point operation of the locking component 32 further reduces assembly complexity. In addition, the cylindrical shape of the cylinder 1 matches the inner wall contour of the frame cross tube, meeting the requirements of lightweight and concealed battery layout for electric-assist bicycles.

[0054] like Figures 3 to 6 As shown, in some embodiments of the E-bike battery system 10, each battery module 21 includes a mounting base 211 and a plurality of battery cells 212 disposed on the mounting base 211. Each mounting base 211 is provided with an installation channel 22, and the mounting bases 211 are stacked one by one along the length extension direction of the cylindrical body 1.

[0055] Understandably, each mounting base 211 has a mounting channel 22 extending through its axis. The axis of the mounting channel 22 coincides with the axis of the cylinder 1, providing a uniform path for the fixing rod 31 of the fixing device 3 to pass through. Each battery cell 212 is symmetrically distributed on the mounting base 211, and the axis of each battery cell 212 in its length direction is parallel to the axis of the cylinder 1. The battery cells 212 are fixed by the limiting structure of the mounting base 211, preventing lateral displacement.

[0056] It should be noted that by stacking the mounting bases 211 and aligning them coaxially with the mounting channel 22, the fixing rod 31 can pass through all battery modules 21, forming an axial constraint and improving the stability of each battery module 21 after alignment and connection. In addition, the symmetrical arrangement of the cells 212 can make the mounting bases 211 evenly stressed, reducing local stress concentration caused by riding bumps and extending the battery system life.

[0057] Furthermore, slots, holes, protrusions, or other structures that can serve as limiting mechanisms can be provided on the mounting base 211; thereby, the battery cell 212 can be correspondingly housed in the limiting structure, thus preventing the battery cell 212 from shaking on the mounting base 211.

[0058] like Figure 5 and Figure 6 As shown, in some embodiments of the E-bike battery system 10, the mounting base 211 includes two base bodies 2111, each base body 2111 having a plurality of receiving slots 2112, each base body 2111 having a protrusion 2113, the protrusion 2113 having a through hole 2116, the two base bodies 2111 being aligned and connected, the two ends of each battery cell 212 being respectively disposed in two opposite receiving slots 2112, the two protrusions 2113 being aligned and abutting, and the two through holes 2116 being connected to form a mounting channel 22.

[0059] Understandably, in a mounting base 211, two base bodies 2111 are aligned and connected in a mirror-symmetrical manner. Each base body 2111 has a protrusion 2113 on its mating surface, and a through hole 2116 is opened in the center of the protrusion 2113. After the two base bodies 2111 are connected, the two protrusions 2113 abut and align, so that the two through holes 2116 are connected to form a mounting channel 22. The receiving groove 2112 on each base body 2111 is a circular recessed structure. After the receiving grooves 2112 of the two base bodies 2111 are mated, a complete cylindrical cavity is formed for fixing the end of the battery cell 212.

[0060] It should be noted that the detachable connection of the two bases 2111 facilitates the assembly and maintenance of the battery cell 212, while reducing processing complexity. The mating of the protrusions 2113 ensures the axial consistency of the mounting channel 22, and the interconnecting design of the through hole 2116 simplifies the insertion process of the fixing rod 31, improving assembly efficiency. The setting of the receiving groove 2112 enables precise positioning and radial constraint of the battery cell 212, preventing the battery cell 212 from detaching from the mounting base 211 during vibration.

[0061] like Figure 4 and Figure 5 As shown, in some embodiments of the E-bike battery system 10, each cell 212 is symmetrically arranged on the mounting base 211.

[0062] Understandably, the symmetrical layout of the battery cells 212 ensures that the mounting base 211 experiences uniform stress on both sides during thermal expansion or vibration during charging and discharging, thus avoiding module deformation caused by stress concentration on one side. In addition, the symmetrically distributed battery cells 212 form a uniform heat source within the cylinder 1, which, combined with the annular contact of the peripheral thermal pad 42, promotes uniform heat diffusion along the circumference of the cylinder 1.

[0063] like Figures 5 to 8 As shown, in some embodiments of the E-bike battery system 10, a protrusion 2113 is disposed at the center of the seat 2111.

[0064] Understandably, the centered design of the protruding post 2113 ensures that when multiple mounting seats 211 are stacked, the axis of the mounting channel 22 is fully aligned and coincides with the axis of the cylinder 1 and the fixing rod 31, avoiding assembly interference caused by installation deviations. Furthermore, the clamping force applied by the fixing rod 31 can be evenly transmitted to each mounting seat 211 along the axis through the central protruding post 2113, reducing the risk of localized pressure deformation.

[0065] like Figure 6 and Figure 8 As shown, in some embodiments of the E-bike battery system 10, a number of reinforcing ribs 2117 are connected between the protrusion 2113 and the seat 2111.

[0066] Understandably, when the locking member 32 is locked, each reinforcing rib 2117 can disperse the radial compressive stress of the fixing rod 31 on the protrusion 2113, preventing cracking at the connection between the protrusion 2113 and the seat 2111. The reinforcing rib 2117 increases the lateral bending resistance of the protrusion 2113, ensures the dimensional stability of the inner wall of the installation channel 22, and avoids wear of the through hole 2116 caused by long-term vibration.

[0067] like Figure 6 and Figure 11As shown, in some embodiments of the E-bike battery system 10, each mounting base 211 is provided with an alignment groove 2114 and an alignment portion 2115; in two adjacent mounting bases 211, the alignment portion 2115 on one mounting base 211 is inserted into the alignment groove 2114 on the other mounting base 211.

[0068] Understandably, the alignment groove 2114 is a recessed structure, and the alignment part 2115 is a protruding structure that matches the shape of the groove. When two adjacent mounting seats 211 are stacked, the alignment part 2115 of one mounting seat 211 is inserted into the alignment groove 2114 of the other mounting seat 211, forming a plug-in fit.

[0069] It should be noted that the automatic alignment of adjacent mounting bases 211 is achieved through plug-in mating, avoiding assembly errors caused by manual adjustment and improving module stacking efficiency. Furthermore, the plug-in structure of the alignment slot 2114 and the alignment part 2115 can limit the relative rotation between mounting bases 211.

[0070] like Figure 5 and Figure 6 As shown, in some embodiments of the E-bike battery system 10, the fixing rod 31 includes a head 311 and a rod portion 312. One end of the rod portion 312 is connected to the head 51 portion 311, and the other end of the rod portion 312 passes through each mounting channel 22 and is screwed to the locking member 32.

[0071] Understandably, the head 311 is an end structure with a diameter larger than that of the rod 312. The rod 312 is a long rod, one end of which is connected to the head 311, and the other end passes through all the mounting channels 22 and is screwed to the locking member 32. The integrated design of the head 311 and the rod 312 simplifies the assembly process, and at the same time, the end face of the head 311 increases the contact area with the mounting base 211, thus dispersing the locking pressure.

[0072] like Figure 4 As shown, in some embodiments of the E-bike battery system 10, each mounting channel 22 has a contoured groove 221 at its end, which is adapted to the head 311.

[0073] Understandably, the head 311 is adapted to the shape of the contour groove 221 to prevent the fixing rod 31 from rotating circumferentially during the locking process and to ensure the vertical transmission of the clamping force.

[0074] like Figure 6 As shown, in some embodiments of the E-bike battery system 10, the rod portion 312 has a screw hole 313 in the length extension direction, and the locking member 32 is screwed into the screw hole 313.

[0075] Understandably, a threaded hole 313 is provided at the end of the rod 312 along its length, and the locking member 32 is a nut or bolt, which is threaded into the threaded hole 313. The threaded hole 313 is a threaded hole, provided at the end of the rod 312, for forming a threaded connection with the locking member 32. In use, by screwing the locking member 32, the locking member 32 abuts against the outermost mounting base 211, and together with the head 311, clamps all the battery modules 21.

[0076] It should be noted that the clamping force is controlled by turning the locking component 32 to accommodate the stacking requirements of different numbers of battery modules 21, avoiding damage to the battery modules 21 due to excessive tightness or looseness. The threaded locking component 32 has self-locking performance in vibration environments, reducing the risk of clamping failure caused by riding bumps.

[0077] like Figures 1 to 4 As shown, in some embodiments of the E-bike battery system 10, the E-bike battery system 10 further includes a first end cap 5 and a second end cap 6, the first end cap 5 being disposed at one end of the cylindrical body 1 and the second end cap 6 being disposed at the other end of the cylindrical body 1;

[0078] The first end cover 5 is provided with a connector 51, which is electrically connected to each battery module 21, and the end heat-conducting pad 41 abuts against the second end cover 6.

[0079] Understandably, the connector 51 is located on the outer surface of the first end cover 5 and is electrically connected to each battery module 21 through internal wires (or conductive structures such as conductive sheets) for supplying power to the electrical devices of the electric-assisted bicycle 20 or connecting to external charging equipment.

[0080] It should be noted that the first end cap 5 and the end of the cylindrical body 1 can be connected by snaps or threads to form a waterproof and dustproof barrier. Furthermore, a sealing ring can be added at the contact point between the two to improve the product's protective performance. The end heat-conducting pad 41 is sandwiched between the inner wall of the second end cap 6 and the end face of the battery module 21 at the very end, transferring heat to the outside through the second end cap 6. Of course, a sealing ring can also be added between the second end cap 6 and the cylindrical body 1.

[0081] Preferably, the cross-section of the cylinder 1 is elliptical. It should be noted that the cross-sectional shape of the cylinder 1 can be flexibly set, preferably to adapt to the contour of the corresponding installation position of the product, so as to prevent excessive gaps between the E-bike battery system 10 and the installation position after installation.

[0082] like Figure 3 As shown, in some embodiments of the E-bike battery system 10, the heat conduction device 4 includes two peripheral heat conduction pads 42, which are symmetrically arranged on both sides of the charging and discharging device 2, and the two peripheral heat conduction pads 42 respectively abut against the inner wall of the cylinder 1.

[0083] Understandably, the two peripheral thermal pads 42 are respectively attached to both sides of the inner wall of the cylinder 1 and extend along the length of the cylinder 1, covering the circumferential surface of the charging and discharging device 2. The symmetrical distribution of the peripheral thermal pads 42 transfers heat from both sides of the battery module 21 to the cylinder 1, forming heat dissipation in multiple directions in combination with the end thermal pads 41.

[0084] The electric-assisted bicycle in some embodiments of this utility model includes a frame and an E-bike battery system 10. A horizontal tube is provided on the frame, and a cylindrical body 1 is inserted into the horizontal tube.

[0085] Understandably, the cross tube of the frame has a hollow tubular structure, with the outer diameter of the cylindrical body 1 matching the inner diameter of the cross tube. The cylindrical body 1 is inserted into the cross tube and fixed by bolts or a quick-release mechanism. The cross tube can be made of aluminum alloy or carbon fiber, combining lightweight and high rigidity.

[0086] The following are the beneficial effects of implementing this utility model:

[0087] This utility model relates to an E-bike battery system and an electric-assisted bicycle, the latter including the E-bike battery system. In the electric-assisted bicycle, by setting up battery modules stacked sequentially along the length of the cylinder and a cooperating structure of fixing rods and locking components passing through the mounting channel, the battery modules are arranged in a compact axial configuration within the cylinder. This solves the problem of difficult and reasonable battery arrangement when the internal space of the horizontal tube is limited. Simultaneously, the clamping action of the fixing rods and locking components ensures a stable connection of the battery modules, avoiding the risk of displacement caused by riding vibrations.

[0088] This invention also utilizes a dual thermal conductive configuration of end thermal pads and peripheral thermal pads. By ensuring close contact between the thermal pads and the inner wall of the cylinder, the end face of the battery module, and the periphery, the working heat of the battery module is quickly transferred to the surface of the cylinder, thereby rapidly transferring the heat to the external environment and preventing the product from burning due to heat accumulation.

[0089] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the modules in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0090] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An E-bike battery system, characterized in that, include: cylindrical body; The charging and discharging device includes a plurality of battery modules, each of which is disposed in the cylinder. The battery modules are stacked one by one along the length extension direction of the cylinder, and each battery module is provided with an installation channel. The fixing device includes a fixing rod and a locking member. The fixing rod passes through each of the installation channels one by one, and the locking member is disposed on the fixing rod. The end of the fixing rod and the locking member together clamp each of the battery modules. and A heat-conducting device includes an end heat-conducting pad and a peripheral heat-conducting pad, both of which are disposed inside the cylinder. The end heat-conducting pad abuts against the cylinder and the end of the charging / discharging device, and the peripheral heat-conducting pad abuts against the cylinder and the periphery of the charging / discharging device.

2. The E-bike battery system according to claim 1, characterized in that, Each of the battery modules includes a mounting base and a plurality of battery cells disposed on the mounting base. Each mounting base is provided with a mounting channel, and the mounting bases are stacked one by one along the length extension direction of the cylindrical body.

3. The E-bike battery system according to claim 2, characterized in that, The mounting base includes two base bodies, each base body having several receiving slots and a protrusion on each base body. The protrusion has a through hole. The two base bodies are aligned and connected. The two ends of each battery cell are respectively located in two opposite receiving slots. The two protrusions are aligned and abut against each other. The two through holes are connected to form the mounting channel.

4. The E-bike battery system according to claim 3, characterized in that, Each of the battery cells is symmetrically arranged on the mounting base; or The protruding post is disposed at the center of the seat; or Several reinforcing ribs connect the protruding post to the base.

5. The E-bike battery system according to claim 2 or 3, characterized in that, Each of the aforementioned mounting bases is provided with an alignment groove and an alignment part; In two adjacent mounting seats, the alignment portion on one mounting seat is inserted into the alignment slot on the other mounting seat.

6. The E-bike battery system according to claim 1, characterized in that, The fixing rod includes a head and a rod portion. One end of the rod portion is connected to the head, and the other end of the rod portion passes through each of the mounting channels and is screwed to the locking member.

7. The E-bike battery system according to claim 6, characterized in that, Each of the aforementioned mounting channels has a contoured groove at its end, the contoured groove being adapted to the head; and / or The rod has a threaded hole in its length extension direction, and the locking member is threaded into the threaded hole.

8. The E-bike battery system according to claim 1, characterized in that, The E-bike battery system also includes a first end cap and a second end cap, wherein the first end cap is disposed at one end of the cylindrical body and the second end cap is disposed at the other end of the cylindrical body; The first end cap is provided with a connector, which is electrically connected to each of the battery modules, and the end heat-conducting pad abuts against the second end cap.

9. The E-bike battery system according to claim 1, characterized in that, The cross-section of the cylinder is elliptical; and / or The heat-conducting device includes two peripheral heat-conducting pads, which are symmetrically arranged on both sides of the charging and discharging device, and the two peripheral heat-conducting pads respectively abut against the inner wall of the cylinder.

10. An electric-assisted bicycle, characterized in that, The electric-assisted bicycle includes a frame and the E-bike battery system as described in any one of claims 1 to 9, wherein a horizontal tube is provided on the frame and the cylindrical body is inserted into the horizontal tube.

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