Bicycle battery device

Abstract

The invention discloses a bicycle battery device which is suitable for being installed in a bicycle frame tube, a loading opening is formed in the tube wall of the bicycle frame tube, the bicycle battery device comprises a battery box, a positioning seat, a locking device and a sealing cover, and the battery box is of a strip-shaped structure and is suitable for being installed in the bicycle frame tube in parallel from the loading opening; the positioning seat is suitable for being mounted in the frame tube, is positioned at one end of the loading opening in the length direction and is used for positioning one end of the battery box; the locking device is suitable for being mounted in the frame tube, is positioned at the other end of the loading opening in the length direction, and is used for elastically locking and fixing the other end of the battery box; the sealing cover is arranged on the battery box and is suitable for covering the loading opening. According to the bicycle battery box device disclosed by the utility model, the battery box can be mounted in the bicycle frame tube, and the hidden mounting is not only attractive, but also plays a good role in protecting the battery box. In addition, the bicycle frame is directly loaded from the loading opening in the pipe wall of the bicycle frame pipe, axial installation is not needed, installation is easy and convenient, and locking is reliable and stable.

Description

Technical Field

[0001] The present invention relates to a battery device, and more particularly to a bicycle battery device. Background Art

[0002] The battery is an important component of an electric bicycle and is the source of all energy for the electric bicycle. Currently, lead-acid batteries and lithium batteries are mainly used in electric assist bicycles on the market.

[0003] There are the following several common installation structures for bicycle batteries: Hub type: The battery is directly installed inside the hub of the wheel, integrated with the motor, saving space and improving efficiency, but increasing the weight and moment of inertia of the wheel, and having higher requirements for the frame and brakes.

[0004] Frame type: The battery is installed on the down tube or up tube of the frame, tightly combined with the frame to maintain the balance of the vehicle body, but occupying the space of the frame and affecting the aesthetics of the vehicle body.

[0005] Rear seat type: The battery is installed under or behind the rear seat, utilizing the space of the rear seat, facilitating disassembly and charging, but increasing the rear weight of the vehicle body and affecting the stability of the vehicle body.

[0006] Among them, for the frame type installation, in order to ensure reliable electrical connection of the lithium battery, it is usually installed axially along the frame tube. Although this installation structure is reliable, it poses a great challenge to the design of the frame, and it is usually difficult to arrange an axial opening for the lithium battery to be inserted. Therefore, in most frame installations, an independent battery installation structure is set outside the frame tube. This installation method not only affects the aesthetics but also has poor reliability. Summary of the Invention

[0007] The present invention aims to at least solve one of the technical problems in the related art to some extent. For this purpose, the object of the present invention is to provide a bicycle battery device.

[0008] To achieve the above object, according to an embodiment of the present invention, a bicycle battery device is adapted to be installed in a frame tube, and the tube wall of the frame tube has a loading port. The bicycle battery device includes: A battery box, the battery box being of a strip structure and adapted to be installed in the frame tube in parallel from the loading port; A positioning seat, the positioning seat being adapted to be installed inside the frame tube and located at one end in the length direction of the loading port for positioning one end of the battery box; A locking device, the locking device being adapted to be installed inside the frame tube and located at the other end in the length direction of the loading port for elastically locking and fixing the other end of the battery box; A cover, which is provided on the battery box and is adapted to cover the loading port.

[0009] According to the bicycle battery device provided by the embodiment of the present invention, a loading port is formed on the tube wall of the frame tube. A positioning seat and a locking device are respectively arranged at both ends of the loading port inside the frame tube. One end of the battery box can be in positioning cooperation with the positioning seat, and the other end can be locked and fixed with the locking device. Moreover, when the battery box is installed on the frame tube, the cover just closes the loading port. In this way, the battery box can be installed inside the frame tube. This hidden installation is not only beautiful but also plays a good protective role for the battery box. In addition, it is directly loaded from the loading port on the tube wall of the frame tube without the need for axial installation, and the installation is simple and convenient, and the locking is reliable and stable.

[0010] In addition, the bicycle battery box according to the above embodiment of the present invention may further have the following additional technical features: According to an embodiment of the present invention, the battery box includes: A tube shell; A battery cell module, which is arranged inside the tube shell; A first end cover and a second end cover. The first end cover covers one end of the tube shell and is adapted to be inserted and positioned with the positioning seat; the second end cover covers the other end of the tube shell and is adapted to be elastically locked and fixed by the locking device.

[0011] According to an embodiment of the present invention, the positioning seat includes: A first base, which has a positioning hole adapted to receive a bicycle power plug on the first base. The inner wall of the positioning hole has a stepped surface, and the stepped surface is provided with a first fixing hole for fixing to the frame tube by a screw; The end face of the first end cover has a positioning boss, and a discharge interface is arranged on the positioning boss. When the battery box is installed inside the frame tube, the positioning boss is in positioning cooperation with the positioning hole, and the discharge interface is inserted into the bicycle power plug inside the positioning hole.

[0012] According to an embodiment of the present invention, the positioning seat further includes a first support platform, which is formed on the lower edge of the first base and extends along the axis of the positioning hole to one side of the first support platform; a first notch groove adapted to the first support platform is provided at the bottom of the first end cover; When the battery box is installed inside the frame tube, the first support platform is located in the first notch groove to support the battery box upward.

[0013] According to an embodiment of the present invention, at least one groove is provided on the support platform, and a second fixing hole for fixing to the frame tube by a screw is provided in the groove.

[0014] According to an embodiment of the present invention, a clamping platform is provided on the end face of the second end cover, and a locking hole is provided on the clamping platform; The locking device includes a lock base, a lock core and a lock tongue. The lock base is adapted to be fixed inside the frame tube, and a clamping groove is formed on the lock base. The lock core is arranged on the lock base, and the lock tongue is located in the clamping groove and is driven by the lock core; When the first end cover and the positioning seat are positioned and installed, when the second end cover is inserted into the lock base, the clamping platform is clamped into the clamping groove, and the lock tongue is inserted into the locking hole to form a lock.

[0015] According to an embodiment of the present invention, the lock base further includes: A second base, the clamping groove is formed on the second base and the upper end of the clamping groove is open to form an opening for the clamping platform to be clamped into; A second supporting platform, the second supporting platform is formed on the lower edge of the second base, and a second notch groove adapted to the second supporting platform is provided at the bottom of the second end cover; when the battery box is inserted into the frame tube, the second supporting platform is located in the second notch groove to support the battery box upward; An elastic column, the elastic column is arranged on the second supporting platform and protrudes upward. When the lock core drives the lock tongue to unlock, the elastic column elastically resets upward to bounce the second end cover upward.

[0016] According to an embodiment of the present invention, the battery box further includes a battery protection board, and the battery protection board is arranged in the first end cover, the second end cover or the tube shell; The battery protection board includes a single-chip microcomputer, a protection chip, a charging protection circuit, a discharging protection circuit and a current protection circuit. The single-chip microcomputer is electrically connected to the protection chip. The protection chip has a voltage acquisition terminal for acquiring the voltage of the battery cell module and performing overvoltage and over-temperature protection on the battery cell module; the charging protection circuit is electrically connected to the protection chip for performing overcharge protection on the battery cell module, the discharging protection circuit is electrically connected to the protection chip for performing over-discharge protection on the battery cell module, and the current protection circuit is electrically connected to the charging protection circuit and the discharging protection circuit for performing over-current protection during charging and discharging.

[0017] According to an embodiment of the present invention, the charging protection circuit includes a primary charging protection circuit and a secondary charging protection circuit. The primary charging protection circuit is electrically connected to the protection chip for primary overcharge protection, and the secondary charging protection circuit is electrically connected to the protection chip for secondary overcharge protection.

[0018] According to an embodiment of the present invention, the protection chip includes a first protection chip and a second protection chip. The first protection chip is electrically connected to the primary charging protection circuit, and the second protection chip is electrically connected to the secondary charging protection circuit.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 is a schematic structural diagram of the bicycle battery device according to the embodiment of the present invention; Figure 2 is an exploded view of the bicycle battery device according to the embodiment of the present invention; Figure 3 is a schematic structural diagram of the positioning seat and one end of the battery box in the bicycle battery device according to the embodiment of the present invention; Figure 4 is a schematic structural diagram of the locking device and the other end of the battery box in the bicycle battery device according to the embodiment of the present invention; Figure 5 is a side view of the positioning seat and one end of the battery box in the bicycle battery device according to the embodiment of the present invention; Figure 6 is a side view of the locking device and the other end of the battery box in the bicycle battery device according to the embodiment of the present invention; Figure 7 is a schematic structural diagram of the bicycle battery device before being combined with the frame tube according to the embodiment of the present invention; Figure 8 is a schematic structural diagram of the bicycle battery device after being combined with the frame tube according to the embodiment of the present invention; Figure 9 is a schematic block diagram of the principle of the battery protection board in the bicycle battery device according to the embodiment of the present invention; Figure 10 is a circuit diagram of the protection chip in the bicycle battery device according to the embodiment of the present invention; Figure 11 is a circuit diagram of the discharge protection circuit in the bicycle battery device according to the embodiment of the present invention; Figure 12 is a circuit diagram of the charging protection circuit in the bicycle battery device according to the embodiment of the present invention; Figure 13 It is the circuit diagram of the current protection circuit in the bicycle battery device of the embodiment of the present invention; Figure 14 It is the circuit diagram of the single-chip microcomputer in the bicycle battery device of the embodiment of the present invention.

[0022] Reference numerals: 10. Battery box; 101. Tube shell; 102. First end cover; 1021. Positioning boss; H102. Discharge interface; 103. Second end cover; 1031. Clamping platform; H103. Lock hole; H104. First notch groove; H105. Second notch groove; 104. Battery protection board; 1041. Protection chip; 1042. Single-chip microcomputer; 1043. Charging protection circuit; 1044. Discharge protection circuit; 1045. Current protection circuit; 1046. NTC; 1047. LED display interface; 20. Positioning seat; 201. First base; 202. First support platform; H201. Positioning hole; S201. Step surface; H202. First fixing hole; H203. Groove; 30. Locking device; 301. Lock seat; 3011. Second base; 3012. Second support platform; 3013. Elastic column; 302. Lock core; 303. Lock tongue; H301. Card slot; H302. Fixing slot; H303. Key hole; 40. Sealing cover; 50. Frame tube; H50. Loading port.

[0023] The implementation, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", 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 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 thus should not be construed as limiting the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, and may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0029] The bicycle battery device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Refer to Figures 1 to 8 As shown, the bicycle battery device according to an embodiment of the present invention is adapted to be installed in the frame tube 50. The tube wall of the frame tube 50 has a loading port H50, that is to say, the loading port H50 is a radially open port rather than an axially open port. The bicycle battery device includes a battery box 10, a positioning seat 20, a locking device 30 and a cover 40.

[0031] Specifically, the battery box 10 has a strip-shaped structure and is adapted to be installed in the frame tube 50 in parallel from the loading port H50. The loading port H50 on the frame tube 50 is a strip-shaped port and has a length substantially equal to that of the battery box 10. After the battery box 10 is installed into the frame tube 50, the length direction of the battery box 10 is consistent with the length direction of the loading port H50 to form a parallel state.

[0032] The positioning seat 20 is adapted to be installed in the frame tube 50 and is located at one end in the length direction of the loading port H50 for positioning one end of the battery box 10. The locking device 30 is adapted to be installed in the frame tube 50 and is located at the other end in the length direction of the loading port H50 for elastically locking and fixing the other end of the battery box 10.

[0033] The cover 40 is provided on the battery box 10 and is adapted to cover the loading port H50. Preferably, the cover 40 can be fixed to the battery box 10 in a detachable installation manner, and the cover 40 is adapted to the shape and size of the loading port H50.

[0034] When the bicycle battery device is installed for the first time, the positioning seat 20 can be first installed at a position adjacent to one end of the loading port H50 inside the frame tube 50, and the locking device 30 can be installed at a position adjacent to the other end of the loading port H50 inside the frame tube 50. This step can be locked and fixed by fasteners such as screws, or can be achieved by welding, clamping and other methods. Subsequently, the battery box 10 can be generally kept parallel to the loading port H50, and one end of the battery box 10 can be inserted into the loading port H50 to be in positioning cooperation with the positioning seat 20, and then the other end of the battery box 10 can be snapped into the locking device 30, and the locking device 30 is used to elastically lock and fix the battery box 10. In this way, the assembly of the battery box 10 and the frame tube 50 can be realized. And during the subsequent use of the bicycle, generally only the battery box 10 needs to be taken out and put in.

[0035] According to the bicycle battery box 10 device provided by the embodiment of the present invention, a loading port H50 is opened on the tube wall of the frame tube 50, the positioning seat 20 and the locking device 30 are respectively arranged at both ends of the loading port H50 inside the frame tube 50, one end of the battery box 10 can be in positioning cooperation with the positioning seat 20, and the other end can be locked and fixed with the locking device 30. And when the battery box 10 is installed on the frame tube 50, the cover 40 just closes the loading port H50. In this way, the battery box 10 can be installed inside the frame tube 50. This hidden installation is not only beautiful, but also plays a good role in protecting the battery box 10. In addition, it is directly loaded from the loading port H50 on the tube wall of the frame tube 50 without the need for axial installation, and the installation is simple and convenient, and the locking is reliable and stable.

[0036] Refer to Figure 2 As shown, in an embodiment of the present invention, the battery box 10 includes a tube shell 101, a battery cell module, a first end cover 102 and a second end cover 103. The tube shell 101 can be made of a material with high temperature resistance and good thermal conductivity, such as metal materials such as stainless steel and aluminum profiles, or plastic materials with high structural strength. The battery cell module is arranged inside the tube shell 101. The battery cell module usually consists of multiple batteries and has a predetermined capacity and output voltage to supply power to the bicycle.

[0037] The first end cover 102 is covered on one end of the tube shell 101 and is adapted to be inserted and positioned with the positioning seat 20. Exemplarily, the positioning insertion can be realized through a groove structure. The second end cover 103 is covered on the other end of the tube shell 101 and is adapted to be elastically locked and fixed by the locking device 30.

[0038] In this embodiment, the battery box 10 mainly consists of a shell 101, a battery cell module, a first end cover 102 and a second end cover 103. The battery box 10 with this structure is convenient to assemble, and it ensures that the battery cell module can be more reliably fixed in the shell 101. In addition, it is convenient to process the mating structure with the positioning seat 20 on the first end cover 102 and the structure mating with the locking device 30 on the second end cover 103.

[0039] Referring Figures 2 to 3 and Figure 5 As shown, in an embodiment of the present invention, the positioning seat 20 includes a first base 201. The first base 201 has a positioning hole H201 adapted to receive the bicycle power plug. That is, the bicycle power plug is fixed in the positioning hole H201 of the positioning seat 20. The inner wall of the positioning hole H201 has a stepped surface S201. The stepped surface S201 is provided with a first fixing hole H202 for fixing to the frame tube 50 by screws. During the installation process, the positioning seat 20 can be fixed in the frame tube 50 by passing screws through the first fixing hole H202. This design not only facilitates the fixing of the positioning seat 20, but also makes the structure of the positioning seat 20 simple. The outer contour of the positioning seat 20 can be adapted to the cross-section of the frame tube 50, ensuring that the positioning seat 20 is more firmly fixed in the frame tube 50.

[0040] The end face of the first end cover 102 has a positioning boss 1021. The positioning boss 1021 is provided with a discharge interface H102. When the battery box 10 is inserted into the frame tube 50, the positioning boss 1021 is in positioning fit with the positioning hole H201, and the discharge interface H102 is inserted into the bicycle power plug in the positioning hole H201.

[0041] That is to say, the shape and size of the positioning boss 1021 are adapted to the positioning hole H201 on the first base 201. And a discharge interface H102 is provided on the positioning boss 1021. The discharge interface H102 is connected to the battery cell module in the battery box 10 and can discharge externally. During the assembly process of the battery box 10, the first end cover 102 of the battery box 10 is aligned with the positioning seat 20 in the frame tube 50, so that the positioning boss 1021 is aligned and inserted into the positioning hole H201 on the positioning seat 20. At this time, the discharge interface H102 on the positioning boss 1021 can be inserted into the bicycle power plug in the positioning hole H201. Then, the second end cover 103 of the battery box 10 is aligned with the locking device 30 in the frame tube 50, so that the second end cover 103 is snapped into the locking device 30, and the battery box 10 is locked and fixed by the locking device 30. In this way, the assembly of the battery box 10 can be completed.

[0042] By adopting the matching structure of the positioning boss 1021 and the positioning hole H201, one end of the battery box 10 can be reliably fixed to the positioning seat 20, enabling rapid assembly. Moreover, it can achieve plugging with the bicycle power plug to ensure good and reliable electrical connection.

[0043] Referring to Figure 3 and Figure 5 As shown, in an embodiment of the present invention, the positioning seat 20 further includes a first supporting platform 202, which is formed at the lower edge of the first base 201 and extends along the axis of the positioning hole H201 to one side of the first supporting platform 202. A second notch groove H105 adapted to the first supporting platform 202 is provided at the bottom of the first end cover 102, that is, the shape and size of the second notch groove H105 are adapted to the first supporting platform 202.

[0044] When the battery box 10 is inserted into the frame tube 50, the first supporting platform 202 is located in the second notch groove H105 to support the battery box 10 upward.

[0045] In this embodiment, the first supporting platform 202 is formed at the lower edge of the positioning seat 20. When one end of the battery box 10 is docked and installed with the positioning seat 20, the first supporting platform 202 abuts in the first notch groove H104 at the bottom of the first end cover 102. Thus, the relative position between one end of the battery box 10 and the positioning seat 20 can be kept stable, which is beneficial to inserting the positioning boss 1021 on the first end cover 102 into the positioning hole H201 on the positioning seat 20. In other words, this structural design is beneficial to the rapid docking and installation between one end of the battery box 10 and the positioning seat 20. In addition, it can also prevent problems such as the positioning boss 1021 falling off from the positioning hole H201 caused by bumps and vibrations during use, and also ensures the stability and reliability after installation.

[0046] Preferably, at least one groove H203 is provided on the supporting platform, and a second fixing hole for fixing to the frame tube 50 by a screw is provided in the groove H203. Thus, the positioning seat 20 can also be fixed to the frame tube 50 by a screw passing through the second fixing hole, which can improve the firmness of the fixing of the positioning seat 20.

[0047] Referring to Figure 2 、 Figure 4 and Figure 6 As shown, in an embodiment of the present invention, a clamping platform 1031 is provided on the end face of the second end cover 103, and a locking hole H103 is provided on the clamping platform 1031 for cooperating with the lock 30 for locking.

[0048] The stopper 30 includes a lock base 301, a lock core 302 and a lock tongue 303. The lock base 301 is adapted to be fixed inside the frame tube 50, and the lock base 301 has a card slot H301. The lock core 302 is provided on the lock base 301, and the lock tongue 303 is located in the card slot H301 and is driven by the lock core 302. That is to say, the lock core 302 can drive the lock tongue 303 to telescopically slide on the lock base 301, and then insert into or withdraw from the lock hole H103. It can be understood that a key hole H303 is usually provided on the lock core 302 for inserting a key and rotating it for unlocking.

[0049] When the first end cover 102 is positioned and installed with the positioning seat 20, and the second end cover 103 is inserted into the lock base 301, the clamping platform 1031 is snapped into the card slot H301, and the lock tongue 303 is inserted into the lock hole H103 to form a lock.

[0050] During the assembly process of the battery box 10, first, one end where the first end cover 102 of the battery box 10 is located is positioned and installed with the positioning seat 20, and then the end where the second end cover 103 of the battery box 10 is located is placed downward onto the lock base 301. At this time, the clamping platform 1031 on the second end cover 103 is snapped into the card slot H301 on the lock base 301 from top to bottom. When the clamping platform 1031 is snapped into the card slot H301 in place, the lock tongue 303 just faces the lock hole H103, and the lock tongue 303 can be elastically inserted into the lock hole H103 to lock and fix the battery box 10 inside the frame tube 50. When the battery box 10 needs to be taken out, the lock core 302 can be driven by a key to unlock the lock tongue 303, so that the lock tongue 303 withdraws from the lock hole H103, and then the end where the second end cover 103 of the battery box 10 is located can be pulled up to take out the battery box 10.

[0051] In this embodiment, by using the stopper 30 with the above structure, reliable locking and fixing of the battery box 10 can be achieved, and it is convenient for users to unlock. In addition, by using the cooperation between the clamping platform 1031 and the card slot H301, not only the cooperation between the second end of the battery box 10 and the stopper 30 is reliable and stable, but also when the battery box 10 is assembled, it can be accurately aligned with the stopper 30 to ensure that the lock hole H103 and the lock tongue 303 can be aligned to achieve locking, ensuring the reliability of locking.

[0052] Refer to Figure 4 and Figure 6As shown, in an embodiment of the present invention, the lock base 301 further includes a second base 3011, a second support platform 3012, and an elastic column 3013. The card slot H301 is formed on the second base 3011, and the upper end of the card slot H301 is open to form an opening for the card table 1031 to be inserted. When the second end cover 103 of the battery box 10 is loaded downward at the end where it is located into the loading port H50, the card table 1031 on the second end cover 103 can slide into the card slot H301 from the opening from top to bottom, ensuring smoother assembly.

[0053] The second support platform 3012 is formed on the lower edge of the second base 3011. The bottom of the second end cover 103 is provided with a second cutout groove H105 adapted to the second support platform 3012, that is, the shape and size of the second cutout groove H105 are adapted to the second support platform 3012. When the battery box 10 is loaded into the frame tube 50, the second support platform 3012 is located in the second cutout groove H105 to support the battery box 10 upward.

[0054] When the other end of the battery box 10 is installed with the lock 30, the second support platform 3012 abuts against the second cutout groove H105 at the bottom of the second end cover 103. In this way, the relative position between the other end of the battery box 10 and the lock 30 can be kept stable, which is beneficial to inserting the card table 1031 on the second end cover 103 into the card slot H301, improving the convenience of locking and installing the other end of the battery box 10. In addition, it can also prevent problems such as instability that may be caused by bumps and vibrations during use, improving the stability and reliability after installation.

[0055] The elastic column 3013 is provided on the second support platform 3012 and protrudes upward. When the lock core 302 drives the lock tongue 303 to unlock, the elastic column 3013 elastically resets upward to pop up the second end cover 103 upward. That is to say, when the other end of the battery box 10 is locked with the lock 30, the bottom of the first end cover 102 fits on the second support platform 3012. At this time, the elastic column 3013 is compressed. When the battery box 10 needs to be taken out, the key is used to drive the lock core 302 to unlock the lock tongue 303, so that the lock tongue 303 exits the lock hole H103. At this time, the elastic column 3013 recovers its elastic deformation upward, and then quickly pops up the end where the second end cover 103 of the battery box 10 is located upward. In this way, it is convenient for the user to take out the battery box 10, realizing the quick disassembly of the battery box 10 and making it more convenient to use.

[0056] Exemplarily, a fixing groove H302 can be provided on the second support platform 3012, and a third fixing hole can be provided in the fixing groove H302 for fixing the lock base 301 in the frame tube 50 by screws.

[0057] Refer to Figures 9 to 14As shown, in some embodiments of the present invention, the battery case 10 further includes a battery protection board 104, which is disposed within the first end cap 102, the second end cap 103 or the tube housing 101. The battery protection board 104 is used to protect the battery cell module from abnormal conditions such as overvoltage, overheating, overcharging and over-discharging.

[0058] The battery protection board 104 includes a microcontroller 1042, a protection chip 1041, a charging protection circuit 1043, a discharging protection circuit 1044 and a current protection circuit 1045. The microcontroller 1042 is electrically connected to the protection chip 1041. The protection chip 1041 has a voltage acquisition terminal for acquiring the voltage of the battery cell module and performing overvoltage and overheating protection on the battery cell module. The charging protection circuit 1043 is electrically connected to the protection chip 1041 for performing overcharging protection on the battery cell module. The discharging protection circuit 1044 is electrically connected to the protection chip 1041 for performing over-discharging protection on the battery cell module. The current protection circuit 1045 is electrically connected to the charging protection circuit 1043 and the discharging protection circuit 1044 for performing overcurrent protection during charging and discharging.

[0059] The microcontroller 1042 is the core control unit of the battery protection board 104 and is used to monitor and manage the working state of the entire battery system. An LED display interface 1047 can also be connected to the microcontroller 1042 to configure a display screen for displaying relevant information. The protection chip 1041 is one of the important components of the battery protection board 104 and has a voltage acquisition terminal for real-time acquisition of the voltage value of the battery cell module. By monitoring the voltage, the protection chip 1041 can determine whether the battery cell module is in an overvoltage or overheating state and take corresponding protection measures to prevent battery damage or safety accidents. In addition, the protection chip 1041 can perform temperature detection through a thermistor NTC1046.

[0060] The charging protection circuit 1043 is an important part of the battery protection board 104. During battery charging, if the voltage exceeds the set threshold, the charging protection circuit 1043 will cut off the charging current to prevent the battery from overcharging and causing safety problems. The discharging protection circuit 1044 is also an important part of the battery protection board 104 for performing over-discharging protection on the battery cell module. During battery discharging, if the voltage is lower than the set threshold, the discharging protection circuit 1044 will cut off the discharging current to prevent the battery from over-discharging and being damaged or unable to work properly.

[0061] The overcurrent protection circuit 1045 is electrically connected to the charging protection circuit 1043 and the discharging protection circuit 1044, and is used for overcurrent protection during charging and discharging. When the battery is charging or discharging, if the current exceeds the set threshold, the overcurrent protection circuit 1045 will cut off the current to prevent the battery from experiencing overcurrent and causing safety problems such as fire.

[0062] Thus, in this embodiment, by providing the battery protection board 104, the battery box 10 can effectively protect the battery cell module against abnormal conditions such as overvoltage, overtemperature, overcharging, and over-discharging. This design not only improves the safety performance of the battery but also extends the service life of the battery, providing a more reliable power supply for the bicycle.

[0063] Refer to Figure 12 As shown, in an embodiment of the present invention, the charging protection circuit 1043 includes a primary charging protection circuit and a secondary charging protection circuit. The primary charging protection circuit is electrically connected to the protection chip 1041 for primary overcharging protection, and the secondary charging protection circuit is electrically connected to the protection chip 1041 for secondary overcharging protection.

[0064] In this embodiment, the design of the primary charging protection circuit and the secondary charging protection circuit can provide multiple protection levels to ensure the safety performance of the battery module. By reasonably setting the threshold, overcharging can be detected in a timely manner during battery charging, and measures can be taken quickly to cut off the charging current, thereby avoiding potential risks caused by overcharging of the battery.

[0065] Refer to Figure 10 As shown, in an embodiment of the present invention, the protection chip 1041 includes a first protection chip and a second protection chip. The first protection chip is electrically connected to the primary charging protection circuit, and the second protection chip is electrically connected to the secondary charging protection circuit.

[0066] In this embodiment, the design of the first protection chip and the second protection chip can provide multiple protection levels for secondary overtemperature and secondary overvoltage, further improving the safety performance of the battery cell module.

[0067] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A bicycle battery device adapted to be installed in a frame tube, the wall of the frame tube having a loading port, characterized in that, The bicycle battery device includes: a battery box, which is in a strip structure and is adapted to be installed in the frame tube parallel to the loading port; a positioning seat, which is adapted to be installed inside the frame tube and is located at one end in the length direction of the loading port for positioning one end of the battery box; a locking device, which is adapted to be installed inside the frame tube and is located at the other end in the length direction of the loading port for elastically locking and fixing the other end of the battery box; a cover, which is arranged on the battery box and is adapted to cover the loading port.

2. The bicycle battery device according to claim 1, wherein, The battery box includes: a tube shell; a battery cell module, which is arranged inside the tube shell; a first end cover and a second end cover, the first end cover is arranged on one end of the tube shell and is adapted to be inserted and positioned with the positioning seat; the second end cover is arranged on the other end of the tube shell and is adapted to be elastically locked and fixed by the locking device.

3. The bicycle battery device according to claim 2, wherein, The positioning seat includes: a first base, on which there is a positioning hole adapted to receive a bicycle power plug, the inner wall of the positioning hole has a stepped surface, and the stepped surface is provided with a first fixing hole for fixing to the frame tube by a screw; the end face of the first end cover has a positioning boss, on which there is a discharge interface. When the battery box is inserted into the frame tube, the positioning boss is in positioning fit with the positioning hole, and the discharge interface is inserted into the bicycle power plug in the positioning hole.

4. The bicycle battery device according to claim 3, characterized in that, The positioning seat further includes a first support platform, which is formed on the lower edge of the first base and extends towards one side of the first support platform along the axis of the positioning hole; the bottom of the first end cover is provided with a first notch groove adapted to the first support platform; when the battery box is inserted into the frame tube, the first support platform is located in the first notch groove for upwardly supporting the battery box.

5. The bicycle battery device according to claim 4, characterized in that, At least one groove is provided on the support platform, and a second fixing hole for fixing to the frame tube by a screw is provided in the groove.

6. The bicycle battery device according to claim 4, wherein A clamping platform is provided on the end face of the second end cover, and a locking hole is provided on the clamping platform; The locking device includes a lock seat, a lock core and a lock tongue. The lock seat is adapted to be fixed inside the frame tube, and there is a clamping groove on the lock seat. The lock core is arranged on the lock seat, and the lock tongue is located in the clamping groove and is driven by the lock core; After the first end cover is positioned and installed with the positioning seat, when the second end cover is inserted into the lock seat, the clamping platform is clamped into the clamping groove, and the lock tongue is inserted into the locking hole to form a lock.

7. The bicycle battery device according to claim 6, wherein The lock seat further includes: a second base, on which the clamping groove is formed and the upper end of the clamping groove is open to form an opening for the clamping platform to be clamped into; a second support platform, which is formed on the lower edge of the second base. The bottom of the second end cover is provided with a second notch groove adapted to the second support platform; when the battery box is inserted into the frame tube, the second support platform is located in the second notch groove for upwardly supporting the battery box; an elastic column, which is arranged on the second support platform and protrudes upwards. After the lock core drives the lock tongue to unlock, the elastic column elastically resets upwards to bounce the second end cover upwards.

8. The bicycle battery device according to claim 2, wherein The battery box further includes a battery protection board, and the battery protection board is arranged inside the first end cover, the second end cover or the tube shell; The battery protection board includes a single-chip microcomputer, a protection chip, a charging protection circuit, a discharging protection circuit and a current protection circuit. The single-chip microcomputer is electrically connected to the protection chip. The protection chip has a voltage acquisition terminal for acquiring the voltage of the battery cell module and performing overvoltage and over-temperature protection on the battery cell module. The charging protection circuit is electrically connected to the protection chip for performing overcharge protection on the battery cell module. The discharging protection circuit is electrically connected to the protection chip for performing over-discharge protection on the battery cell module. The current protection circuit is electrically connected to the charging protection circuit and the discharging protection circuit for performing over-current protection during charging and discharging.

9. The bicycle battery device according to claim 8, characterized in that, The charging protection circuit includes a primary charging protection circuit and a secondary charging protection circuit. The primary charging protection circuit is electrically connected to the protection chip for primary overcharge protection. The secondary charging protection circuit is electrically connected to the protection chip for secondary overcharge protection.

10. The bicycle battery device according to claim 9, characterized in that, The protection chip includes a first protection chip and a second protection chip. The first protection chip is electrically connected to the primary charging protection circuit. The second protection chip is electrically connected to the secondary charging protection circuit.

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