Electronic bicycle shifting system and control method

Abstract

This invention discloses an electronic shifting system and control method for bicycles. The electronic shifting system includes a first battery assembly, a second battery assembly, an electronic front derailleur, and an electronic rear derailleur. The first battery assembly is mounted on and electrically connected to the electronic front derailleur, and the second battery assembly is mounted on and electrically connected to the electronic rear derailleur. The electronic front derailleur and the electronic rear derailleur are connected by a wire. The first battery assembly serves as the primary battery, and the second battery assembly serves as a backup battery; alternatively, the second battery assembly serves as the primary battery, and the first battery assembly serves as the backup battery. The primary and backup batteries cannot be powered simultaneously, and the primary battery has a higher priority than the backup battery. This invention enables a single battery assembly to power both the electronic front and rear derailleurs simultaneously via a wire, and by using one battery assembly as a backup battery, improves the stability of the electronic shifting system.

Description

Technical Field

[0001] This invention relates to the field of bicycle technology, and in particular to an electronic shifting system and control method for bicycles. Background Technology

[0002] Electronic shifting systems on road bikes typically include: electronic shifters (mounted on the handlebars and operated by the user for changing gears, including left and right shifters, controlling the front and rear derailleurs respectively); an electronic front derailleur (which shifts the chain between the chainrings on the sprocket to achieve front shifting); and an electronic rear derailleur (which shifts the chain between the chainrings on the freewheel to achieve rear shifting). Different front and rear derailleur positions have different gear ratios, enabling the bicycle to change gears.

[0003] In the existing technology, the power supply mode of the electronic shifting system of bicycles is that the batteries for the electronic front derailleur and electronic rear derailleur are external and located on the frame or installed in the seat post. Its disadvantages are that the power and control wiring is complicated, the installation of the external power supply is complicated and inefficient, and there is no spare battery installed. The stability and safety of the electronic shifting system of bicycles are poor. When the battery is depleted, the electronic shifting system will not be usable, which will not only cause inconvenience to riding, but may also cause safety accidents. Summary of the Invention

[0004] The purpose of this invention is to provide a bicycle electronic shifting system and control method, which aims to solve the problems of poor stability and safety of existing electronic shifting systems.

[0005] This invention provides an electronic shifting system for bicycles, including: a first battery assembly, a second battery assembly, an electronic front derailleur, and an electronic rear derailleur. The first battery assembly is disposed on the electronic front derailleur and electrically connected to it. The second battery assembly is disposed on the electronic rear derailleur and electrically connected to it. The electronic front derailleur and the electronic rear derailleur are connected by wires.

[0006] In this configuration, the first battery assembly serves as the primary battery and the second battery assembly serves as the backup battery; or, the second battery assembly serves as the primary battery and the first battery assembly serves as the backup battery; the primary battery and the backup battery cannot supply power simultaneously; and the primary battery has a higher usage priority than the backup battery.

[0007] Furthermore, the electronic front derailleur includes: a first base component, a first actuation component, and a first chain guide component. One end of the first actuation component is rotatably connected to the first base component, and the other end of the first actuation component is rotatably connected to the first chain guide component. The first battery assembly is disposed on the first base component, the first actuation component, or the first chain guide component.

[0008] Furthermore, a first housing is provided on the first base component, a first receiving portion is provided inside the first housing, and the first battery assembly is disposed in the first receiving portion.

[0009] Furthermore, the electronic rear derailleur includes: a second base component, a second actuating component, a movable component, and a second chain guide component. One end of the second actuating component is rotatably connected to the second base component, and the other end of the second actuating component is rotatably connected to one end of the movable component. The other end of the movable component is rotatably connected to the second chain guide component. The second battery assembly is disposed on the second base component, the second actuating component, the movable component, or the second chain guide component.

[0010] Furthermore, a second housing is provided on the second base component, and a second receiving portion is provided inside the second housing, and the second battery assembly is disposed inside the second receiving portion.

[0011] Furthermore, the primary battery is detachably connected to the electronic front derailleur, and the backup battery is fixedly connected to the electronic rear derailleur; or, the primary battery is detachably connected to the electronic rear derailleur, and the backup battery is fixedly connected to the electronic front derailleur.

[0012] Furthermore, the capacity of the main battery is greater than that of the backup battery.

[0013] Furthermore, the electronic front derailleur is provided with a first battery component detection device for detecting whether the first battery component is installed; and / or, the electronic rear derailleur is provided with a second battery component detection device for detecting whether the second battery component is installed.

[0014] This invention also provides a control method for a bicycle electronic shifting system, comprising:

[0015] Check whether the commonly used battery is installed;

[0016] If installed, check whether the charge of the commonly used battery meets the power supply standard;

[0017] If the power supply standard is met, the main battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur; if the power supply standard is not met, the backup battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur.

[0018] If not installed, the backup battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur.

[0019] Furthermore, it also includes:

[0020] Detect whether the unused time of the commonly used battery has reached a predetermined time;

[0021] If this is achieved, then the commonly used battery is controlled to supply power to the backup battery;

[0022] If the target is not reached, the system will continue to check whether the unused time of the commonly used battery has reached the predetermined time.

[0023] This invention discloses an electronic shifting system for bicycles, comprising: a first battery assembly, a second battery assembly, an electronic front derailleur, and an electronic rear derailleur. The first battery assembly is disposed on and electrically connected to the electronic front derailleur, and the second battery assembly is disposed on and electrically connected to the electronic rear derailleur. The electronic front derailleur and the electronic rear derailleur are connected by a wire. The first battery assembly serves as the primary battery, and the second battery assembly serves as the backup battery; alternatively, the second battery assembly serves as the primary battery, and the first battery assembly serves as the backup battery. The primary battery and the backup battery cannot be powered simultaneously, and the primary battery has a higher usage priority than the backup battery. This invention reduces the wiring complexity of the battery components and improves their installation efficiency by incorporating battery assemblies in the electronic front and rear derailleurs. Through wiring, a single battery assembly can simultaneously power both the electronic front and rear derailleurs. By using one battery assembly as a backup battery, it ensures that the backup battery can power the bicycle's electronic shifting system when the primary battery is depleted, thereby ensuring the normal operation of the system and improving its stability and safety. This invention also provides a control method for the bicycle's electronic shifting system, achieving the same effects, which will not be elaborated upon further. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a bicycle electronic derailleur system in which the battery assembly is located outside the electronic rear derailleur and electronic front derailleur;

[0026] Figure 2 This is a schematic diagram of the electronic front derailleur.

[0027] Figure 3 Exploded view of the electronic front derailleur;

[0028] Figure 4 This is a structural schematic diagram of the first base component;

[0029] Figure 5 A schematic diagram of the first battery assembly installed inside the electronic front derailleur (with part of the first housing removed);

[0030] Figure 6 This is a schematic diagram of the electronic rear derailleur.

[0031] Figure 7 Exploded view of the electronic rear derailleur;

[0032] Figure 8 This is a structural schematic diagram of the second base component;

[0033] Figure 9 A schematic diagram of the second battery assembly installed inside the electronic rear derailleur (with part of the second housing removed);

[0034] Figure 10 A flowchart illustrating the control method of a bicycle electronic shifting system;

[0035] The attached figures are labeled as follows:

[0036] 1. First battery assembly; 2. Second battery assembly; 3. Electronic front derailleur; 4. Electronic rear derailleur; 5. Cable; 6. First base member; 7. First actuating member; 8. First chain guide member; 9. First housing; 10. Frame; 11. Second base member; 12. Second actuating member; 13. Movable member; 14. Second chain guide member; 15. Second housing; 16. Rear chain fork. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0039] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0041] Please see Figure 1 This embodiment provides a bicycle electronic shifting system, including: a first battery assembly 1, a second battery assembly 2, an electronic front derailleur 3 and an electronic rear derailleur 4. The first battery assembly 1 is disposed on the electronic front derailleur 3 and electrically connected to the electronic front derailleur 3. The second battery assembly 2 is disposed on the electronic rear derailleur 4 and electrically connected to the electronic rear derailleur 4. The electronic front derailleur 3 and the electronic rear derailleur 4 are connected by a wire 5.

[0042] In this configuration, the first battery assembly 1 serves as the primary battery and the second battery assembly 2 serves as the backup battery; or, the second battery assembly 2 serves as the primary battery and the first battery assembly 1 serves as the backup battery; the primary battery and the backup battery cannot supply power simultaneously; and the primary battery has a higher priority than the backup battery.

[0043] This embodiment reduces the wiring difficulty of the battery components and improves the installation efficiency by setting battery components on the electronic front derailleur 3 and electronic rear derailleur 4. The wire 5 enables one battery component to power both the electronic front derailleur 3 and electronic rear derailleur 4 at the same time. By using one of the battery components as a backup battery, it is ensured that the backup battery can power the bicycle electronic shifting system when the main battery is out of power, thereby ensuring the normal operation of the bicycle electronic shifting system and improving the stability and safety of the bicycle electronic shifting system.

[0044] Furthermore, in this embodiment, the main battery is detachably connected to the electronic front derailleur 3, and the spare battery is fixedly connected to the electronic rear derailleur 4; or, the main battery is detachably connected to the electronic rear derailleur 4, and the spare battery is fixedly connected to the electronic front derailleur 3. The detachable connection of the main battery improves the convenience of charging it. Users only need to remove the main battery, wait for it to be fully charged, and then reinstall it, which is convenient and quick. The spare battery is usually used in emergencies, so it needs to be charged for a longer period of time. In this embodiment, the main battery can charge the spare battery through a cable, so the spare battery does not need to consider convenient charging. During riding, the spare battery is often in a bumpy state, which may cause the connection between the spare battery and the electronic front derailleur 3 or the electronic rear derailleur 4 to loosen. To ensure the reliability and stability of the connection between the spare battery and the electronic front derailleur 3 or the electronic rear derailleur 4, the spare battery in this embodiment adopts a fixed connection.

[0045] Furthermore, the capacity of the main battery is greater than that of the backup battery. This design is mainly based on the different usage priorities of the main battery and the backup battery. The main battery has a higher priority and is mainly used for daily use, so it needs a large capacity battery to ensure that the entire bicycle electronic shifting system has sufficient range. The backup battery is mainly used for emergencies, so it is used less often and only needs to meet the needs of emergency use. This also reduces battery costs.

[0046] The first battery assembly 1 and the electronic front derailleur 3 are described in detail below:

[0047] Please see Figure 2 and Figure 3 Specifically, the electronic front derailleur 3 includes: a first base component 6, a first actuation component 7, and a first chain guide component 8. One end of the first actuation component 7 is rotatably connected to the first base component 6, and the other end of the first actuation component 7 is rotatably connected to the first chain guide component 8. The first battery assembly 1 is disposed on the first base component 6, the first actuation component 7, or the first chain guide component 8.

[0048] Furthermore, when the bicycle falls, the first battery assembly 1 may be damaged after colliding with the ground. To avoid damage to the first battery assembly 1 from the collision with the ground, the first battery assembly 1 can be installed inside the electronic front derailleur 3. In this way, when the bicycle falls, the first battery assembly 1 will not collide with the ground, but other parts on the electronic front derailleur 3 will collide with the ground.

[0049] For further details, please refer to Figure 4 and Figure 5 In this embodiment, a first housing 9 is provided on the first base component 6, and a first receiving part is provided inside the first housing 9. The first battery assembly 1 is disposed in the first receiving part. Installing the first battery assembly 1 inside the first base component 6 can prevent gravel from flying onto the first battery assembly 1 during riding and damaging it. At the same time, the internal volume of the first housing on the first base component 6 is relatively large, and there is still sufficient space for installing the first battery assembly 1 after installing other internal components. Therefore, it is only necessary to set the fixing structure of the first battery assembly 1 on the first housing 9, without the need for a new structural design of the entire first base component 6. The modification is simple, the manufacturing cost is low, and it can be directly installed on various electronic front derailleur 3 products with little impact on the original structure of the electronic front derailleur 3. Moreover, the first base component 6 is fixed, and installing the first battery assembly 1 on the first base component 6 is convenient, the structure is more stable and secure, and the first battery assembly 1 is not affected by the shifting operation of the electronic front derailleur 3.

[0050] When the first battery assembly 1 is used as the regular battery, in order to enable quick installation and replacement of the first battery assembly 1, the first battery assembly 1 in this embodiment is detachably mounted on the electronic front derailleur 3. The detachable connection between the first battery assembly 1 and the electronic front derailleur 3 can expand the application scenarios of the first battery assembly 1 and improve the user experience. For example, when the first battery assembly 1 has only a little bit of power left, and the user needs to ride for a long time, the user can replace it with a fully charged first battery assembly 1 to meet their riding needs, avoiding the first battery assembly 1 suddenly running out of power during the ride and causing a safety accident.

[0051] In some embodiments, to improve the efficiency of users replacing the first battery assembly 1, the first battery assembly 1 is detachably disposed on the outer surface of the electronic front derailleur 3. The detachable disposal of the first battery assembly 1 on the outer surface of the electronic front derailleur 3 allows users to directly install and remove the first battery assembly 1 without disassembling other components, which is convenient and quick.

[0052] However, placing the first battery assembly 1 outside the electronic front derailleur 3 poses a risk of collision with the ground. To solve this problem, the placement of the first battery assembly 1 in this embodiment is as follows: when the first battery assembly 1 is placed on the first base member 6, the farthest distance between the first battery assembly 1 and the frame 10 is less than the farthest distance between the first base member 6 and the frame 10; or, when the first battery assembly 1 is placed on the first actuation member 7, the farthest distance between the first battery assembly 1 and the frame 10 is less than the farthest distance between the first actuation member 7 and the frame 10; or, when the first battery assembly 1 is placed on the first chain guide member 8, the farthest distance between the first battery assembly 1 and the frame 10 is less than the farthest distance between the first chain guide member 8 and the frame 10. This design ensures that when the bicycle falls, the first battery assembly 1 on the electronic front derailleur 3 will never collide with the ground, but rather other devices on the electronic front derailleur 3 will collide with the ground.

[0053] When the first battery assembly 1 is detachably mounted on the electronic front derailleur 3, the electronic front derailleur 3 in this embodiment is provided with a first battery assembly detection device for detecting whether the first battery assembly 1 is installed. The first battery assembly detection device can effectively detect whether the first battery assembly 1 is installed, thereby avoiding corresponding faults and damage, and improving the stability and reliability of the entire bicycle electronic shifting system.

[0054] Specifically, the detection device for the first battery assembly 1 can be a voltage detection circuit. When the first battery assembly 1 is installed correctly, the circuit will output a normal voltage signal; if the first battery assembly 1 is not installed or is installed incorrectly, the voltage detection circuit will not be able to output a correct voltage signal. In this way, it can be determined whether the first battery assembly 1 is installed correctly. The detection device for the first battery assembly 1 can also be a combination of a magnet and a magnetic sensor. A magnet is installed on the first battery assembly 1, and a corresponding magnetic sensor is also installed on the electronic front derailleur 3. When the two are close to each other, the magnet will generate a magnetic force, thereby changing the magnetic field distribution. By sensing the change in the surrounding magnetic field through the magnetic sensor, it can be determined whether the first battery assembly 1 is installed correctly. In this way, both methods can be used simultaneously to detect whether the first battery assembly 1 is installed. The combination of the two methods can improve the accuracy and reliability of the detection.

[0055] The electronic rear derailleur 4 and the second battery assembly 2 are described in detail below:

[0056] Please see Figure 6 and Figure 7 The electronic rear derailleur 4 includes: a second base component 11, a second actuating component 12, a movable component 13, and a second chain guide component 14. One end of the second actuating component 12 is rotatably connected to the second base component 11, and the other end of the second actuating component 12 is rotatably connected to one end of the movable component 13. The other end of the movable component 13 is rotatably connected to the second chain guide component 14. The second battery assembly 2 is disposed on the second base component 11, the second actuating component 12, the movable component 13, or the second chain guide component 14.

[0057] Furthermore, when the bicycle falls, the second battery assembly 2 may be damaged after colliding with the ground. To avoid damage to the second battery assembly 2 from the collision with the ground, the second battery assembly 2 can be installed inside the electronic rear derailleur 4. In this way, when the bicycle falls, the second battery assembly 2 will not collide with the ground, but other parts on the electronic rear derailleur 4 will collide with the ground.

[0058] For further details, please refer to Figure 8 and Figure 9In this embodiment, a second housing 15 is provided on the second base component 11, and a second receiving part is provided inside the second housing 15. The second battery assembly 2 can be placed in the second receiving part. Installing the second battery assembly 2 inside the second base component 11 can prevent gravel from flying onto the second battery assembly 2 during riding and damaging it. At the same time, the internal volume of the second housing on the second base component 11 is relatively large. After installing other internal components, there is still enough space for installing the second battery assembly 2. Therefore, it is only necessary to set a fixing structure for the second battery assembly 2 on the second housing 15. There is no need to make a new structural design for the entire second base component 11. The modification is simple, the manufacturing cost is low, and it can be directly installed on various electronic rear derailleur 4 products with little impact on the original structure of the electronic rear derailleur 4. Moreover, the second base component 11 is fixed. Installing the second battery assembly 2 on the second base component 11 is convenient, the structure is more stable and secure, and the second battery assembly 2 is not affected by the shifting operation of the electronic rear derailleur 4.

[0059] When the second battery assembly 2 is used as the primary battery, in order to enable quick installation and replacement of the second battery assembly 2, the second battery assembly 2 in this embodiment is detachably mounted on the electronic rear derailleur 4. The detachable connection between the second battery assembly 2 and the electronic rear derailleur 4 can expand the application scenarios of the second battery assembly 2 and improve the user experience. For example, when the second battery assembly 2 has only a little bit of power left, and the user needs to ride for a long time, the user can replace it with a fully charged second battery assembly 2 to meet their riding needs, avoiding the second battery assembly 2 suddenly running out of power during the ride and causing a safety accident.

[0060] In some embodiments, to improve the efficiency of user replacement of the second battery assembly 2, the second battery assembly 2 is detachably disposed on the outer surface of the electronic rear derailleur 4. This detachable disposal allows the user to directly install and remove the second battery assembly 2 without disassembling other components, making the process convenient and quick.

[0061] However, placing the second battery assembly 2 outside the electronic rear derailleur 4 poses a risk of collision with the ground. To solve this problem, the second battery assembly 2 is positioned as follows in this embodiment: when the second battery assembly 2 is placed on the second base member 11, the farthest distance between the second battery assembly 2 and the frame 10 is less than the farthest distance between the second base member 11 and the frame 10; or, when the second battery assembly 2 is placed on the second actuation member 12, the farthest distance between the second battery assembly 2 and the frame 10 is less than the farthest distance between the second actuation member 12 and the frame 10. Alternatively, when the second battery assembly 2 is mounted on the movable member 13, the furthest distance between the second battery assembly 2 and the frame 10 is less than the furthest distance between the movable member 13 and the frame 10; or, when the second battery assembly 2 is mounted on the second chain guide member 14, the furthest distance between the second battery assembly 2 and the frame 10 is less than the furthest distance between the second chain guide member 14 and the frame 10. This design ensures that when the bicycle falls, the second battery assembly 2 on the electronic rear derailleur 4 will never collide with the ground, but rather other devices on the electronic rear derailleur 4 will collide with the ground.

[0062] When the second battery assembly 2 is detachably mounted on the electronic rear derailleur 4, the electronic rear derailleur 4 in this embodiment is provided with a second battery assembly detection device for detecting whether the second battery assembly 2 is installed. The second battery assembly detection device can effectively detect whether the second battery assembly 2 is installed, thereby avoiding corresponding faults and damage, and improving the stability and reliability of the entire bicycle electronic shifting system.

[0063] Specifically, the detection device for the second battery assembly 2 can be a voltage detection circuit. When the second battery assembly 2 is installed correctly, this circuit will output a normal voltage signal; if the second battery assembly 2 is not installed or is installed incorrectly, the voltage detection circuit will not be able to output a correct voltage signal. In this way, it can be determined whether the second battery assembly 2 is installed correctly. The detection device for the second battery assembly 2 can also be a combination of a magnet and a magnetic sensor. A magnet is installed on the second battery assembly 2, and a corresponding magnetic sensor is also installed on the electronic rear derailleur 4. When the two are close to each other, the magnet will generate a magnetic force, thereby changing the magnetic field distribution. By sensing the change in the surrounding magnetic field through the magnetic sensor, it can be determined whether the second battery assembly 2 is installed correctly. In this way, both methods can be used simultaneously to detect whether the second battery assembly 2 is installed. The combination of the two methods can improve the accuracy and reliability of the detection.

[0064] In this embodiment, the electronic front derailleur 3 and the electronic rear derailleur 4 are connected by a wire 5, which can transmit control signals and provide power for the shifting of the electronic front derailleur 3 or the electronic rear derailleur 4.

[0065] Furthermore, in this embodiment, the wire 5 is arranged along the rear lower fork 16 of the frame 10. Arranging the wire 5 along the rear lower fork 16 of the frame 10 reduces the wiring arrangement of the wire 5, making the installation of the wire 5 more convenient.

[0066] It should be noted that the structural design of the bicycle electronic derailleur system in this embodiment can be configured according to actual needs. For example, there are two different structural designs: the first battery assembly 1 is installed inside the electronic front derailleur 3, and the first battery assembly 1 is detachably installed outside the electronic front derailleur 3. If safety is a greater concern, the structural design in which the first battery assembly 1 is installed inside the electronic front derailleur 3 can be selected. If convenience is a greater concern, the structural design in which the first battery assembly 1 is detachably installed outside the electronic front derailleur 3 can be selected. The structure between the second battery assembly 2 and the electronic rear derailleur 4 is similar to the selection of the first battery assembly 1 and the electronic front derailleur 3. In this embodiment, a structural design in which the first battery assembly 1 is installed inside the electronic front derailleur 3 and the second battery assembly 2 is detachably installed outside the electronic rear derailleur 4 can also be selected. Alternatively, a structural design in which one battery assembly is detachably connected and the other battery assembly is fixedly connected can also be selected. Other similar structures can be selected by those skilled in the art according to actual circumstances, and will not be elaborated further.

[0067] Please see Figure 10 This embodiment also provides a control method for a bicycle electronic shifting system, including:

[0068] S101: Detect whether the commonly used battery is installed;

[0069] Specifically, if the commonly used battery is detected, step S102 is executed to check the battery level. If the commonly used battery is not detected, step S104 is executed to directly power the electronic front derailleur and electronic rear derailleur using the spare battery.

[0070] S102: Detect whether the charge of the commonly used battery has reached the power supply standard;

[0071] Specifically, if the power of the primary battery reaches the power supply standard, step S103 is executed to power the electronic front derailleur and electronic rear derailleur using the primary battery; if the power of the primary battery does not reach the power supply standard, step S104 is executed to power the electronic front derailleur and electronic rear derailleur using the backup battery.

[0072] The device can also provide a notification when the main battery's charge level is below the power supply standard, preventing situations where the backup battery is insufficient to support the entire ride during long-distance cycling and thus avoiding potential safety accidents. The notification can be delivered via sound, vibration, or a visual message displayed on the device's screen.

[0073] In one embodiment, the voltage of the commonly used battery is detected to be at the standard voltage. If it is, step S103 is executed; if it is not, step S104 is executed. Voltage detection is more reliable than power detection. The effective power of the battery will gradually decrease as the battery is used. This may lead to a situation where the detected power level reaches the power supply standard, but the actual power supply standard is not reached. The voltage will not decrease as the effective power level decreases. When the voltage is insufficient, the battery will naturally be unable to supply power to the vehicle's electronic transmission system.

[0074] In a specific application scenario, when the voltage of the primary battery is detected to drop from 7.4V to below 6.9V, the backup battery is immediately controlled to supply power to the electronic front derailleur and electronic rear derailleur.

[0075] Furthermore, it can analyze user habits and battery life through learning algorithms, and intelligently predict and notify users in advance when the power of the main battery and spare battery is insufficient to support the entire ride by obtaining the user's riding destination. It can also remind users to carry sufficient battery reserves.

[0076] S103: Control the common battery to supply power to the electronic front derailleur and the electronic rear derailleur;

[0077] S104: Control the backup battery to supply power to the electronic front derailleur and the electronic rear derailleur;

[0078] When a user does not ride for a long time, the power of the main battery and the backup battery will be depleted to a certain extent. To ensure that the backup battery has sufficient power, this embodiment also includes: detecting whether the unused time of the main battery has reached a predetermined time; if it has, controlling the main battery to supply power to the backup battery; if it has not reached the predetermined time, continuing to detect whether the unused time of the main battery has reached the predetermined time.

[0079] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

[0080] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusivity.

[0081] The term "comprises" implies that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A bicycle electronic gear shifting system, characterized by, include: The system comprises a first battery assembly, a second battery assembly, an electronic front derailleur, and an electronic rear derailleur. The first battery assembly is disposed on the electronic front derailleur and electrically connected to it. The second battery assembly is disposed on the electronic rear derailleur and electrically connected to it. The electronic front derailleur and the electronic rear derailleur are connected by wires. In this configuration, the first battery assembly serves as the primary battery, and the second battery assembly serves as the backup battery; or, the second battery assembly serves as the primary battery, and the first battery assembly serves as the backup battery; the primary battery and the backup battery cannot supply power simultaneously; and the primary battery has a higher usage priority than the backup battery. The electronic front derailleur is provided with a first battery component detection device for detecting whether the first battery component is installed; and / or, the electronic rear derailleur is provided with a second battery component detection device for detecting whether the second battery component is installed. The second battery pack detection device is a voltage detection circuit. When the second battery pack is installed correctly, this circuit will output a normal voltage signal; if the second battery pack is not installed or is installed incorrectly, the voltage detection circuit will not be able to output a correct voltage signal. In this way, it is determined whether the second battery pack is installed correctly. The second battery pack detection device is a combination of a magnet and a magnetic sensor. A magnet is installed on the second battery pack, and a corresponding magnetic sensor is also installed on the electronic rear derailleur. When the two are close to each other, the magnet will generate a magnetic force, thereby changing the magnetic field distribution. The magnetic sensor senses the change in the surrounding magnetic field and determines whether the second battery pack is installed correctly.

2. The electronic bicycle derailleur system according to claim 1, wherein, The electronic front derailleur includes: a first base component, a first actuation component, and a first chain guide component. One end of the first actuation component is rotatably connected to the first base component, and the other end of the first actuation component is rotatably connected to the first chain guide component. The first battery assembly is disposed on the first base component, the first actuation component, or the first chain guide component.

3. The electronic bicycle derailleur system of claim 2, wherein, The first base component is provided with a first housing, the first housing is provided with a first receiving portion, and the first battery assembly is disposed in the first receiving portion.

4. The electronic bicycle derailleur system of claim 1, wherein, The electronic rear derailleur includes: a second base component, a second actuating component, a movable component, and a second chain guide component. One end of the second actuating component is rotatably connected to the second base component, and the other end of the second actuating component is rotatably connected to one end of the movable component. The other end of the movable component is rotatably connected to the second chain guide component. The second battery assembly is disposed on the second base component, the second actuating component, the movable component, or the second chain guide component.

5. The bicycle electronic shifting system according to claim 4, characterized in that, The second base component is provided with a second housing, and the second housing is provided with a second receiving portion, and the second battery assembly is disposed in the second receiving portion.

6. The bicycle electronic shifting system according to claim 1, characterized in that, The primary battery is detachably connected to the electronic front derailleur, and the backup battery is fixedly connected to the electronic rear derailleur; or, the primary battery is detachably connected to the electronic rear derailleur, and the backup battery is fixedly connected to the electronic front derailleur.

7. The bicycle electronic shifting system according to claim 1, characterized in that, The capacity of the main battery is greater than that of the backup battery.

8. A control method for a bicycle electronic shifting system as described in any one of claims 1-7, characterized in that, include: Check whether the commonly used battery is installed; If installed, check whether the charge of the commonly used battery meets the power supply standard; If the power supply standard is met, the main battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur; if the power supply standard is not met, the backup battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur. If not installed, the backup battery is controlled to supply power to the electronic front derailleur and the electronic rear derailleur.

9. The control method for a bicycle electronic shifting system according to claim 8, characterized in that, Also includes: Detect whether the unused time of the commonly used battery has reached a predetermined time; If this is achieved, then the commonly used battery is controlled to supply power to the backup battery; If the target is not reached, the system will continue to check whether the unused time of the commonly used battery has reached the predetermined time.

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