Power management system and auxiliary battery module

Abstract

A power management system is applied to a bicycle. The power management system comprises at least one electronic component, an Internet of Things module, an auxiliary battery module and a power supply interface. The auxiliary battery module is electrically connected to the Internet of Things module and drives the Internet of Things module. The power supply interface is electrically connected to the auxiliary battery module through the auxiliary power supply path and is electrically connected to the at least one electronic component. The power supply interface comprises a plurality of power connection interfaces, and the plurality of power connection interfaces respectively output a plurality of operation voltages to the at least one electronic component so as to drive the at least one electronic component. According to the power supply management system, a user can easily add multiple electronic components on the bicycle, and the power supply management system can be used as a shared power supply of the electronic components, so that the total weight of the bicycle is reduced, and the riding comfort and safety are improved. In addition, the power management system can switch different operation modes to give consideration to endurance and safety.

Description

Technical Field

[0001] This disclosure document relates to a power management system, and particularly to a power management system applied to a bicycle. Background Art

[0002] Bicycles can be divided into traditional bicycles and electric bicycles according to their power sources. When there is a need to install electronic devices on traditional bicycles, since there is no power source, most electronic devices are equipped with their own batteries. In addition to increasing the size of the electronic devices themselves and occupying space, carrying more batteries is not conducive to the lightweight of the vehicle body.

[0003] Although electric bicycles can supply power to electronic devices, in order to ensure the stable and safe power supply between the power battery and the electromechanical system, few manufacturers are willing to allow users to externally connect electronic devices on their own, or only provide a few low-voltage output ports. Moreover, when the remaining power of the power battery is low, in order to ensure that the electromechanical system can obtain sufficient power, the user may be forced to turn off some electronic components, such as the front and rear lights. The original intention to provide safety functions instead leads to the risk of having no lights available and thus a safety hazard. Summary of the Invention

[0004] One aspect of this case relates to a power management system. The power management system is applied to a bicycle. The power management system includes at least one electronic component, an Internet of Things module, an auxiliary battery module, and a power supply interface. The auxiliary battery module is electrically connected to the Internet of Things module. The power supply interface is electrically connected to the auxiliary battery module through an auxiliary power supply path and is also electrically connected to at least one electronic component. The power supply interface includes a plurality of power connection interfaces, and the plurality of power connection interfaces respectively output a plurality of operating voltages to at least one electronic component to drive at least one electronic component.

[0005] In one embodiment, the power supply interface includes a plurality of voltage converters. The plurality of voltage converters are respectively electrically connected to the plurality of power connection interfaces, receive the output voltage of the auxiliary battery module through the auxiliary power supply path, and generate a plurality of operating voltages based on the output voltage.

[0006] In one embodiment, the power management system further includes a power battery module. The power battery module communicates with the electromechanical system and the auxiliary battery module of the bicycle. The power battery module discharges the auxiliary battery module through a shared power supply path and discharges the electromechanical system through a driving power supply path.

[0007] In one embodiment, the power battery module operates in a shutdown mode, a normal mode, and a redundant mode. When the remaining power of the power battery module is less than a preset power, the power battery module switches from the normal mode to the redundant mode. In the normal mode, the power battery module controls the auxiliary battery module to disconnect the auxiliary power supply path. In the shutdown mode, the power battery module disconnects the shared power supply path, the main power supply path, and the drive power supply path. In the redundant mode, the power battery module disconnects the shared power supply path and the main power supply path, and the auxiliary battery module discharges at least one electronic component through the auxiliary power supply path.

[0008] In one embodiment, when the power battery module is in the shutdown mode, the auxiliary battery module communicates with the Internet of Things module.

[0009] In one embodiment, at least one electronic component includes a plurality of different electronic components. The auxiliary battery module communicates with the plurality of electronic components to identify the plurality of electronic components. In the redundant mode, the auxiliary battery module controls the power supply interface to supply power to the plurality of electronic components according to the power supply rule.

[0010] In one embodiment, the power supply rule includes that when the remaining power of the auxiliary battery module is less than a plurality of power thresholds in sequence, the auxiliary battery module controls the power supply interface to stop supplying power to the plurality of electronic components in sequence; and when the voltage of the auxiliary battery module is less than a plurality of voltage thresholds in sequence, the auxiliary battery module controls the power supply interface to stop supplying power to the plurality of electronic components in sequence.

[0011] In one embodiment, the Internet of Things module transmits a switching signal to the power battery module, and the power battery module switches between the shutdown mode, the normal mode, and the redundant mode according to the switching signal.

[0012] In one embodiment, the power supply interface includes a Universal Serial Bus (USB) control unit and a USB connection interface, and the USB control unit is electrically connected to the USB connection interface.

[0013] Another aspect of this case relates to an auxiliary battery module. The auxiliary battery module is applied to a bicycle and is electrically connected to the Internet of Things module and the power supply interface. The auxiliary battery module includes a processor and a battery pack. The processor communicates with the power supply interface to identify at least one plurality of electronic components electrically connected to the power supply interface. The battery pack is electrically connected to the power supply interface through the auxiliary power supply path to discharge the plurality of electronic components through the auxiliary power supply path to drive the plurality of electronic components. The processor determines to control the power supply interface to stop supplying power to the plurality of electronic components in sequence according to the power supply rule.

[0014] The power management systems of the above-mentioned multiple embodiments enable users to easily install diverse electronic components on a bicycle and can serve as a shared power source for the electronic components, thereby reducing the total weight of the bicycle and enhancing riding comfort and safety. In addition, the power management systems of the above-mentioned multiple embodiments can switch different operating modes to balance endurance and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Referring to the embodiments in the following paragraphs and the following drawings, the content of this case can be better understood:

[0016] Figure 1 FIG. is a schematic circuit block diagram of a power management system according to an embodiment of this case; and

[0017] Figure 2 FIG. is a schematic circuit block diagram of a power management system according to an embodiment of this case. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The spirit of this case will be clearly described below with reference to the drawings and detailed description. After understanding the embodiments of this case, any person skilled in the art can make changes and modifications based on the technology taught in this case without departing from the spirit and scope of this case.

[0019] Figure 1 FIG. is a schematic circuit block diagram of a power management system 100 according to an embodiment of this case. The power management system 100 can be applied to an electric bicycle or a non-electric bicycle. The power management system 100 includes at least one electronic component (for example, electronic components 110A to 110C), an Internet of Things module 120, an auxiliary battery module 130, and a power supply interface 140. The auxiliary battery module 130 is electrically connected to the Internet of Things module 120. The power supply interface 140 is electrically connected to the auxiliary battery module 130 and the electronic components 110A to 110C respectively.

[0020] In one embodiment, at least one electronic component includes at least one of a vehicle lamp, a smart electronic lock, an anti-lock braking system, and a bicycle meter. For example, the electronic components 110A to 110C can be a vehicle lamp, a smart electronic lock, and a bicycle meter respectively. However, the types and quantities of the electronic components 110A to 110C are not limited to this embodiment.

[0021] The Internet of Things module 120 performs wireless communication. In some embodiments, the Internet of Things module 120 supports one or more of Bluetooth, Wi-Fi, and mobile communication technologies (e.g., GSM, 4G, 5G, or higher-generation communication technologies), but in practice, it is not limited to this embodiment. In some embodiments, the Internet of Things module 120 includes one or more of a positioning circuit, a gyroscope, and a gravity sensor (G-sensor). Therefore, the Internet of Things module 120 can record information such as collision events, location (e.g., GPS coordinates), speed, and acceleration of the bicycle.

[0022] In one embodiment, please continue to refer to Figure 1 , the auxiliary battery module 130 includes a battery pack 132 (e.g., a lithium battery pack or a lead-acid battery pack), a processor 134, and a memory 136. Through the power supply interface 140, the auxiliary battery module 130 establishes communication paths C1A - C1C with the electronic components 110A - 110C respectively. The processor 134 communicates with the electronic components 110A - 110C through the communication paths C1A - C1C to identify the types of the electronic components 110A - 110C, where the processor 134 can determine the priority order of power supply to the electronic components 110A - 110C according to the types of the electronic components 110A - 110C. The detailed content will be described in the subsequent paragraphs. The processor 134 also establishes a communication path C2 with the Internet of Things module 120 to communicate with the Internet of Things module 120. Through the wireless communication function of the Internet of Things module 120, the processor 134 can obtain the parameters and / or software of the electronic components 110A - 110C and update the electronic components 110A - 110C with the obtained parameters and / or software through the communication paths C1A - C1C.

[0023] In addition, the auxiliary battery module 130 is also electrically connected to the Internet of Things module 120 to output an operating voltage VD1 to the Internet of Things module 120 to drive the Internet of Things module 120.

[0024] In some embodiments, the communication paths C1A - C1C include a Controller Area Network (CAN) communication interface. In other embodiments, the communication path C2 includes a Universal Asynchronous Receiver-Transmitter (UART) communication interface.

[0025] In one embodiment, the power supply interface 140 is electrically connected to the auxiliary battery module 130 through the auxiliary power supply path PS, and the auxiliary battery module 130 discharges to the power supply interface 140 through the auxiliary power supply path PS. The power supply interface 140 includes voltage converters 141A to 141D, power connection interfaces 143A to 143C, a USB connection interface 145, and a USB control unit 147. The voltage converters 141A to 141D receive the output voltage V1 of the auxiliary battery module 130 through the auxiliary power supply path PS. The voltage converters 141A to 141C are respectively electrically connected to the power connection interfaces 143A to 143C, and the voltage converter 141D is electrically connected to the USB connection interface 145. The USB control unit 147 is electrically connected to the USB connection interface 145. It is worth mentioning that the number of the voltage converters 141A to 141C and the power connection interfaces 143A to 143C is not limited to this embodiment.

[0026] In one embodiment, the power supply interface 140 can determine the time points for respectively outputting multiple operating voltages VD2 to VD4 according to the product definition.

[0027] The voltage converters 141A to 141C respectively convert the output voltage V1 of the auxiliary battery module 130 into multiple operating voltages VD2 to VD4, and output the multiple operating voltages VD2 to VD4 to the electronic components 110A to 110C through the power connection interfaces 143A to 143C to drive the electronic components 110A to 110C.

[0028] In one embodiment, the voltage converter 141D is a bidirectional voltage converter. The auxiliary battery module 130 can discharge to the electronic components (not shown) electrically connected to the USB connection interface 145 through the voltage converter 141D, or receive power from the electronic components electrically connected to the USB connection interface 145 through the voltage converter 141D. In some embodiments, the USB control unit 147 can be implemented by a USB Power Delivery IC. In some embodiments, the voltage converter 141D, the USB connection interface 145, and the USB control unit 147 can be omitted.

[0029] In some embodiments, the voltage converters 141A to 141D can be implemented by a buck-boost converter.

[0030] In some embodiments, the memory 136 in the auxiliary battery module 130 stores a plurality of power thresholds, and the processor 134 compares the plurality of power thresholds with the remaining power of the battery pack 132 to generate a comparison result. The processor 134 controls whether the power supply interface 140 stops outputting the operating voltages VD2 to VD4 according to the comparison result. When the remaining power of the battery pack 132 is successively lower than the plurality of power thresholds, the processor 134 successively turns off the voltage converters 141A to 141C, thereby controlling the power supply interface 140 to successively stop supplying the operating voltages VD2 to VD4 to the electronic components 110A to 110C.

[0031] More specifically, the plurality of power thresholds respectively correspond to a plurality of device types. The processor 134 can identify the device types of the electronic components 110A to 110C, as described above. When the processor 134 determines that the remaining power of the battery pack 132 is lower than a certain power threshold or the voltage of the battery pack 132 is lower than a certain voltage threshold, the processor 134 controls the power supply interface 140 to stop supplying power to the electronic components of the device type represented by the power threshold.

[0032] For example, assume that the electronic components 110A to 110C are a bicycle meter, an anti-lock braking system, and a headlight belonging to different device types respectively, and the memory 136 stores 3 power thresholds: 50%, 30%, and 10%. When the processor 134 determines that the remaining power of the battery pack 132 is lower than 50%, the processor 134 disables the voltage converter 141A to stop providing the operating voltage VD2 to the electronic component 110A (i.e., the bicycle meter). When the processor 134 determines that the remaining power of the battery pack 132 is lower than 30%, the processor 134 disables the voltage converter 141B to stop providing the operating voltage VD3 to the electronic component 110B (i.e., the anti-lock braking system). When the processor 134 determines that the remaining power of the battery pack 132 is lower than 10%, the processor 134 disables the voltage converter 141C to stop providing the operating voltage VD4 to the electronic component 110C (i.e., the headlight).

[0033] Similarly, the memory 136 in the auxiliary battery module 130 stores a plurality of voltage thresholds, which are default or correspond to the operating voltages VD2 to VD4, and the processor 134 compares the plurality of voltage thresholds with the voltage of the battery pack 132 to generate a comparison result.

[0034] That is to say, the auxiliary battery module 130 can formulate a power supply rule according to its own state and the priority order of each electronic component for driving safety or other requirements (i.e., the above-mentioned method of determining that the remaining power is lower than a certain power threshold or the voltage is lower than a certain voltage threshold), and control the power supply interface 140 to successively stop outputting the corresponding operating voltage. It should be noted that the values of the preset power threshold or voltage threshold can be designed according to actual needs, and are not limited to this embodiment.

[0035] In one embodiment, the Internet of Things module 120 is communicatively connected to a mobile device 910 (such as the user's smart phone) to receive a switching signal from the mobile device 910 and transmit the switching signal to the auxiliary battery module 130. The processor 134 of the auxiliary battery module 130 can control the disconnection or conduction of the auxiliary power supply path PS according to the switching signal. For example, disconnecting the auxiliary power supply path PS can be to disconnect the electrical connection between the battery pack 132 and the power supply interface 140.

[0036] In summary, Figure 1 the power management system 100 can allow the user to easily load various electronic components on a non-electric bicycle and can also serve as a shared power source for different types of electronic components. This helps to reduce the total weight of the bicycle and improve riding comfort and safety.

[0037] Figure 2 FIG. 10 is a circuit block diagram of a power management system 200 according to an embodiment of the present case. The power management system 200 is applied to an electric bicycle. The power management system 200 includes at least one electronic component (for example, electronic components 210A to 210C), an Internet of Things module 220, an auxiliary battery module 230, a power supply interface 240, and a power battery module 250.

[0038] The power battery module 250 supplies power to the electromechanical system of the electric bicycle to move the electric bicycle. The power battery module also communicates with the electromechanical system 930, the Internet of Things module 220, and the auxiliary battery module 230 of the bicycle through the power supply interface 140. The power battery module 250 establishes a communication path C3A with the auxiliary battery module 230 through the power supply interface 140. Among them, the power battery module 250 can communicate with the auxiliary battery module 230 through the communication path C3A and can communicate with the Internet of Things module 220 through the communication paths C2 and C3A. The connection methods and operations of the Internet of Things module 220 and the battery pack 232, the processor 234, and the memory 236 of the auxiliary battery module 230 are respectively similar to Figure 1 the corresponding components in the power management system 100 of

[0039] In one embodiment, the total power and output voltage of the auxiliary battery module 230 are respectively less than those of the power battery module 250. In one embodiment, the output voltage of the auxiliary battery module 230 is between 3V and 12V. The output voltage of the power battery module 250 is between 24V and 48V.

[0040] In addition, the power battery module 250 establishes a communication path C3B with the electromechanical system 930 of the electric bicycle through the power supply interface 240, so that the power battery module 250 can provide an appropriate power output according to the operating conditions of the electromechanical system 930 (such as the rotational speed or torque of the motor). In some embodiments, the communication paths C3A - C3B include a controller area network communication interface.

[0041] The power supply interface 240 includes voltage converters 241A - 241E, power connection interfaces 243A - 243D, a USB connection interface 245, and a USB control unit 247. The connection methods and operations of the voltage converters 241A - 241D, the power connection interfaces 243A - 243C, the USB connection interface 245, and the USB control unit 247 are respectively similar to Figure 1 the corresponding components in the power management system 100 of, for the sake of simplicity, only the differences will be described below. The voltage converter 241E is electrically connected to the power connection interface 243D.

[0042] The voltage converters 241A - 241E receive one of the output voltage V1 of the auxiliary battery module 230 and the output voltage V2 of the power battery module 250. The voltage converters 241A - 241E also convert one of the received output voltage V1 and output voltage V2 into operating voltages VD2 - VD5 respectively. The power connection interface 243D is electrically connected to the electromechanical system 930 and outputs the operating voltage VD5 to the electromechanical system.

[0043] The power battery module 250 is electrically connected to the voltage converter 241E through a drive power supply path and discharges to the electromechanical system 930 through the drive power supply path PD. The power battery module 250 is electrically connected to the voltage converters 241A - 241D through a main power supply path PM and discharges to the voltage converters 241A - 241E through the main power supply path PM. The power battery module 250 is also electrically connected to the auxiliary battery module 230 through a shared power supply path PA and discharges to the auxiliary battery module 230 through the shared power supply path PA, where a voltage converter can be selectively provided on the power supply path PA.

[0044] In other words, the power battery module 250 can charge the battery pack 232 of the auxiliary battery module 230. In one embodiment, when the remaining power of the auxiliary battery module 230 is less than a preset value, the auxiliary battery module 230 notifies the power battery module 250 through the communication path C3A, so that the power battery module 250 charges the auxiliary battery module 230 through the shared power supply path PA.

[0045] In one embodiment, the power battery module 250 operates in a shutdown mode, a normal mode, and a redundancy mode, and the power battery module 250 includes components not shown in Figure 2a battery pack (such as a lithium battery pack or a lead-acid battery pack), a processor, and a memory. The following switching operations between the shutdown mode, the normal mode, and the redundant mode can be executed by a processor (not shown in the figure) of the power battery module 250. When the remaining power of the power battery module 250 is less than a preset power, the power battery module 250 will switch from the normal mode to the redundant mode.

[0046] In the normal mode, the power battery module 250 controls the auxiliary battery module 230 to disconnect or maintain the opening of the auxiliary power supply path PS through the communication path C3A. The power battery module 250 also provides an output voltage V2 through the main power supply path PM, the drive power supply path PD, and the shared power supply path PA.

[0047] In the redundant mode, the power battery module 250 disconnects the shared power supply path PA and the main power supply path PM, and provides the output voltage V2 through the drive power supply path PD. In addition, the power battery module 250 is used to notify the auxiliary battery module 230 to start providing the output voltage V1 through the auxiliary power supply path PS through the communication path C3A, that is, to start discharging the electronic components 210A to 210C. In the redundant mode, when the remaining power of the auxiliary battery module 230 is less than a plurality of power thresholds in sequence, the auxiliary battery module 230 controls the power supply interface 240 to stop supplying power to the electronic components 210A to 210C in sequence. The manner in which the auxiliary battery module 230 controls the power supply interface 240 to stop supplying power in sequence according to the power supply rule has been discussed in the previous paragraph. For the sake of brevity, it will not be repeated here. Figure 1 For the sake of brevity, it will not be repeated here.

[0048] In the shutdown mode, the power battery module 250 disconnects the shared power supply path PA, the drive power supply path PD, and the main power supply path PM. In other words, the power battery module 250 stops providing the output voltage V2. It is worth mentioning that the auxiliary battery module 230 can still discharge the electronic components 210A to 210C through the auxiliary power supply path PS.

[0049] In some embodiments, in the shutdown mode, the normal mode, and the redundant mode, the auxiliary battery module 230 can provide an operating voltage VD1 to the Internet of Things module 220 and communicate with the Internet of Things module 220. Thereby, the Internet of Things module 220 can maintain an operating state and periodically locate the bicycle (for example, obtain GPS coordinates).

[0050] In one embodiment, the power battery module 250 communicates with the Internet of Things module 220 via communication paths C3A and C2 to receive a switching signal transmitted by the mobile device 910 through the Internet of Things module 220. The switching signal controls the power battery module 250 to switch to one of the normal mode, the shutdown mode, and the redundancy mode. In other words, the power battery module 250 automatically switches between different modes and / or is controlled by the mobile device 910 to manually switch between different modes.

[0051] In summary, Figure 2 the power management system 200 of Figure 1 not only has the advantages of the power management system 100 of

[0052] Although the present case is disclosed in detail with the above embodiments, the present case does not exclude other feasible implementation aspects. Therefore, the protection scope of the present case shall be subject to that defined by the appended claims, rather than being limited by the foregoing embodiments. For those skilled in the art, without departing from the spirit and scope of the present case, various modifications and refinements can be made to the present case. Based on the foregoing embodiments, all modifications and refinements made to the present case are also covered by the protection scope of the present case.

[0053]

Symbol Description

[0054] 100, 200: Power management system

[0055] 110A~110C, 210A~210C: Electronic components

[0056] 120, 220: Internet of Things module

[0057] 130, 230: Auxiliary battery module

[0058] 132, 232: Battery pack

[0059] 134, 234: Processor

[0060] 136, 236: Memory

[0061] 140, 240: Power supply interface

[0062] 141A~141D, 241A~241E: Voltage converter

[0063] 143A~143C, 243A~243D: Power connection interface

[0064] 145, 245: USB connection interface

[0065] 147, 247: USB control unit

[0066] 910: Mobile device

[0067] 930: Electromechanical system

[0068] V1, V2: Output voltage

[0069] VD1~VD5: Operating voltage

[0070] C1A~C1C, C2, C3A~C3B: Communication path

[0071] PS: Auxiliary power supply path

[0072] PD: Drive power supply path

[0073] PA: Shared power supply path

[0074] PM: Main power supply path.

Claims

1. A power management system is applied to a bicycle. Characterized in that, The power management system includes: At least one electronic component; An Internet of Things module; An auxiliary battery module, electrically connected to the Internet of Things module; And A power supply interface, electrically connected to the auxiliary battery module through an auxiliary power supply path and electrically connected to the at least one electronic component, wherein the power supply interface includes a plurality of power connection interfaces, and the plurality of power connection interfaces respectively output a plurality of operating voltages to the at least one electronic component to drive the at least one electronic component.

2. The power management system according to claim 1, Characterized in that, The power supply interface further includes: A plurality of voltage converters, wherein the plurality of voltage converters are respectively electrically connected to the plurality of power connection interfaces, receive the output voltage of the auxiliary battery module through the auxiliary power supply path, and generate the plurality of operating voltages according to the output voltage.

3. The power management system according to claim 1, Characterized in that, It further includes: A power battery module, communicating with the electromechanical system of the bicycle and the auxiliary battery module, wherein, The power battery module discharges the auxiliary battery module through a shared power supply path; and The power battery module discharges the electromechanical system through a drive power supply path.

4. The power management system according to claim 3, Characterized in that, The operation of the power battery module includes a shutdown mode, a normal mode and a backup mode. When the remaining power of the power battery module is less than a preset power, the power battery module switches from the normal mode to the backup mode, wherein, In the normal mode, the power battery module controls the auxiliary battery module to disconnect or turn on the auxiliary power supply path; In the shutdown mode, the power battery module disconnects the shared power supply path, the main power supply path and the drive power supply path; and In the backup mode, the power battery module disconnects the shared power supply path and the main power supply path, and the auxiliary battery module discharges the at least one electronic component through the auxiliary power supply path.

5. The power management system according to claim 4, Characterized in that, When the power battery module is in the shutdown mode, the auxiliary battery module communicates with the Internet of Things module.

6. The power management system according to claim 4, Characterized in that, The at least one electronic component includes a plurality of different electronic components, wherein, The auxiliary battery module communicates with the plurality of electronic components to identify the plurality of electronic components, In the backup mode, the auxiliary battery module controls the power supply interface to supply power to the plurality of electronic components according to a power supply rule.

7. The power management system according to claim 6, Characterized in that, The power supply rule includes: When the remaining power of the auxiliary battery module is less than a plurality of power thresholds in sequence, the auxiliary battery module controls the power supply interface to stop supplying power to the plurality of electronic components in sequence; And When the voltage of the auxiliary battery module is less than a plurality of voltage thresholds in sequence, the auxiliary battery module controls the power supply interface to stop supplying power to the plurality of electronic components in sequence.

8. The power management system according to claim 4, wherein, the Internet of Things module transmits a switching signal to the power battery module, and the power battery module switches between the shutdown mode, the normal mode, and the redundancy mode according to the switching signal.

9. The power management system according to claim 1, wherein, the power supply interface includes a universal serial bus control unit and a universal serial bus connection interface, and the universal serial bus control unit is electrically connected to the universal serial bus connection interface.

10. An auxiliary battery module, wherein, applied to a bicycle and electrically connected to an Internet of Things module and a power supply interface, and the auxiliary battery module includes: a processor, communicating with the power supply interface to identify a plurality of electronic components electrically connected to the power supply interface; and a battery pack, electrically connected to the power supply interface through an auxiliary power supply path to discharge to the plurality of electronic components through the auxiliary power supply path to drive the plurality of electronic components, wherein the processor controls the power supply interface to stop supplying power to the plurality of electronic components in sequence according to a power supply rule.

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