Battery-powered device and robot

Abstract

The utility model relates to equipment powered by a battery and a robot. The equipment comprises a standby power supply; a battery compartment; a bin cover; a sensor; a switching circuit; a timer; and a control circuit. According to the utility model, when the battery is replaced, the equipment is firstly switched to a sleep mode in which part of modules are powered off, and then when a user pulls out a main battery, the equipment is in a low-power-consumption sleep mode, so that the power supply is stable and the power is not shut down in the battery replacement process. And the cover opening time is timed, and the equipment is shut down when the timing reaches the preset duration, so that the battery power shortage and the safety risk caused by the electrified operation of the equipment under the condition that the equipment does not change the battery after the bin cover is opened are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to automatic switching of a main power supply and a backup power supply, in particular to a battery-powered device, and to a robot. BACKGROUND

[0002] The total time of switching on and off the robot is long. For the robot with replaceable battery design, if the battery replacement does not require rebooting, the user experience can be improved. INVENTION CONTENTS

[0003] Therefore, it is necessary to provide a battery-powered device and a robot which support battery replacement without rebooting.

[0004] A battery-powered device comprises a backup power supply, a battery compartment for installing a main battery, a compartment cover for covering the battery sensor, a sensor for detecting whether the compartment cover is covered, the sensor being configured to output a first signal when detecting that the compartment cover is in an open state and output a second signal when detecting that the compartment cover is in a covered state, a switching circuit configured to use the main battery to power the device when detecting that the voltage provided by the main battery meets a first condition and use the backup power supply to power the device when detecting that the voltage provided by the main battery meets a second condition, a timer connected to the sensor, the timer being configured to start timing when receiving the first signal and clear the timing when receiving the second signal, the timer sending a third signal when the timing reaches a preset time length, and a control circuit connected to the sensor and the timer, the control circuit being configured to control part of the modules of the device to be powered off when receiving the first signal, control the part of the modules to be powered on when receiving the second signal and the device being powered by the main battery, and control the device to be powered off when receiving the third signal.

[0005] The above battery-powered device first switches the device to a sleep mode with part of the modules powered off when replacing the battery, and then the device is in a low-power sleep mode when the user removes the main battery, ensuring stable power supply during battery replacement and preventing power failure and safety risks.

[0006] In one embodiment, the device further comprises a charging circuit configured to charge the backup power supply when the device is powered by the main battery.

[0007] In one of the embodiments, further comprising: an overvoltage protection circuit, an input of the overvoltage protection circuit is connected to a voltage bus of the main battery; a voltage conversion circuit connected to an output of the overvoltage protection circuit, for converting a voltage outputted by the output of the overvoltage protection circuit into a preset voltage value to supply power to the device.

[0008] In one of the embodiments, the backup power supply is a lithium battery.

[0009] In one of the embodiments, the switching circuit is connected in series in an upper computer of the device.

[0010] In one of the embodiments, further comprising a backup power supply board, the charging circuit and the backup power supply are arranged on the backup power supply board, the backup power supply board is connected in parallel to the upper computer of the device, and the backup power supply board adopts a detachable structure which can be detached from the upper computer.

[0011] In one of the embodiments, the switching circuit comprises a load switch assembly arranged in the upper computer, the load switch assembly is configured to supply power to the device using the main battery when detecting that the voltage provided by the main battery meets a first condition, and supply power to the device using the backup power supply when detecting that the voltage provided by the main battery meets a second condition.

[0012] The load switch assembly comprises a first load switch connected to the voltage bus of the main battery and a second load switch connected to the backup power supply, the first load switch and the second load switch are interlocked, the second load switch is turned off when the first load switch is turned on, and the second load switch is turned on when the first load switch is turned off; in response to the voltage provided by the main battery meeting the first condition, the first load switch is turned on to supply power to the device by the main battery; in response to the voltage provided by the main battery meeting the second condition, the second load switch is turned on to supply power to the device by the backup power supply.

[0013] In one of the embodiments, the backup power supply is a super capacitor.

[0014] In one of the embodiments, the backup power supply comprises two or more super capacitors connected in series, the device comprises a charge-discharge circuit connected to the super capacitors, the charge-discharge circuit is connected in series with the voltage bus, and the charge-discharge circuit is connected in series between the main battery and the overvoltage protection circuit.

[0015] A robot comprising the device powered by the battery according to any one of the preceding embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 is a circuit diagram of part of the structure of the battery-powered device used in an embodiment of the present application.

[0018] Figure 2 is a topology of part of the circuit structure of Embodiment 1.

[0019] Figure 3 is a topology of part of the circuit structure of Embodiment 2.

[0020] Figure 4 is a topology of part of the circuit structure of Embodiment 3.

[0021] Figure 5 is a circuit schematic diagram of the backup power board 30 in Embodiment 3.

[0022] Figure 6 is a topology of part of the circuit structure of Embodiment 4. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0025] It will be understood that when an element or layer is referred to as being "on", "adjacent", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer, or one or more intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected to", or "directly coupled to" another element or layer, then there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section; for example, a first doped type could be termed a second doped type; and similarly, a second doped type could be termed a first doped type; a first doped type and a second doped type are different doped types, e.g., a first doped type can be p-type and a second doped type can be n-type, or the first doped type can be n-type and the second doped type can be p-type.

[0026] Spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and / or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can also be oriented in the other direction (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0027] The singular forms "a", "an", and "the" used herein include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", or the like, when used herein, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0028] The application provides a battery replacement without shutdown solution, which can be applied to any battery-powered device, such as robots, terminals, drones, electronic computers, etc. In the scenario where the device needs to be used all day long, the battery replacement will not interrupt the power supply, and the device does not need to be shut down and restarted during the battery replacement. In an embodiment of the application, the device includes a backup power supply 114, a battery compartment, a compartment cover, a sensor 150, a switching circuit 130, a timer 160, and a control circuit 140.

[0029] Figure 1 is a circuit diagram of part of the structure of the battery-powered device in an embodiment of the application. The main battery 112 is installed in the battery compartment, and the compartment cover is used to cover the battery compartment to protect the main battery 112. The sensor 150 is used to detect whether the compartment cover is closed, and outputs a first signal when detecting that the compartment cover is in an open state, and outputs a second signal when detecting that the compartment cover is in a closed state. The sensor 150 can use a Hall sensor, a photoelectric sensor, etc. The switching circuit 130 is connected to the main battery 112, the backup power supply 114, and the device power output port 120. The switching circuit 130 uses the main battery 112 as the device power supply to supply power to the device when detecting that the voltage provided by the main battery 112 meets the first condition, and uses the backup power supply 114 as the device power supply to supply power to the device when detecting that the voltage provided by the main battery 112 meets the second condition. In an embodiment of the application, the switching circuit 130 uses the backup power supply 114 to supply power to the device when detecting that the voltage provided by the main battery 112 is less than a preset threshold value, at which time the main battery 112 is removed; and the switching circuit 130 uses the main battery 112 to supply power to the device when detecting that the voltage provided by the main battery 112 is greater than the preset threshold value, at which time the main battery 112 is installed normally. The timer 160 is connected to the sensor 150. The timer 160 starts timing when receiving the first signal, and clears the timing when receiving the second signal, and the timer 160 sends a third signal when the timing reaches a preset time length (for example, 2 minutes). The control circuit 140 is connected to the sensor 150 and the timer 160. The control circuit 140 controls the device to enter a sleep mode and powers off part of the modules of the device to reduce the power consumption of the device when receiving the first signal. The control circuit 140 controls the device to recover from the sleep mode and powers on the modules that are powered off in the sleep mode if the device is powered by the main battery 112 when receiving the second signal. The control circuit 140 controls the device to shut down when receiving the third signal.

[0030] The above battery-powered device switches to a sleep mode in which part of the modules are powered off before the battery is replaced. When the user removes the main battery 112, the device is already in a low-power sleep mode, ensuring stable power supply during the battery replacement process and preventing shutdown. The device is shut down when the timing reaches the preset duration, avoiding the risk of battery depletion and safety risks caused by the device running with power after the cover is opened.

[0031] In an embodiment of the present application, the device further includes a charging circuit. The charging circuit charges the backup power supply 114 when the device uses the main battery 112 as the device power supply.

[0032] In an embodiment of the present application, the device further includes an overvoltage protection circuit (OVP) and a voltage conversion circuit. The input end of the overvoltage protection circuit is connected to the voltage bus of the main battery 112, and the voltage conversion circuit is connected to the output end of the overvoltage protection circuit. The voltage conversion circuit is used to convert the voltage output by the output end of the overvoltage protection circuit to a preset voltage value to supply power to the device. In an embodiment of the present application, the switching circuit 130 can detect the input voltage or output voltage of the overvoltage protection circuit to determine whether the voltage provided by the main battery 112 reaches a preset threshold.

[0033] The following provides part of the circuit structure topology of four specific embodiments implementing the foregoing battery replacement without shutdown solution.

[0034] Embodiment 1:

[0035] A single lithium battery is used as the backup power supply 114, and a charging circuit 132 with path control is used to control the backup power supply in the host computer 10. Figure 2 is the topology of part of the circuit structure of Embodiment 1. The input end of the overvoltage protection circuit 122 is connected to the voltage bus of the main battery 112 for voltage protection. In Figure 2 In the embodiment shown in FIG. 4, the main battery 112 outputs 24V DC, and the voltage bus is a 24V bus. The voltage conversion circuit 124 is connected to the output end of the overvoltage protection circuit 122 to convert the voltage output by the output end to a preset voltage value of DC voltage. In Figure 2 In the embodiment shown in FIG. 4, the voltage conversion circuit 124 is a DC-DC 5V circuit, which outputs 5V DC. The charging circuit 132 includes NMOS tubes (N-channel metal oxide semiconductor field effect transistor) M1, M2, and M3. The inductor L1 is connected to the NMOS tubes M2 and M3. The NMOS tubes M2, M3, and the inductor L1 form a BUCK type DC-DC converter. The NMOS tubes M2 and M3 are alternately turned on, the output voltage is less than the input voltage, and the input and output polarities are the same.

[0036] The output end of the backup power supply 114 is connected to the source of the NMOS tube M3, and the output voltage of the backup power supply 114 is less than 5V (i.e. the output voltage of the voltage transformation circuit 124). When the device is powered by the main battery 112, the NMOS tube M3 is turned off, and the lithium battery of the backup power supply 114 is not discharged. When the voltage of the voltage bus drops (i.e. the main battery 112 is removed), the backup power supply 114 will automatically discharge externally through the body diode of the NMOS tube M3, and the NMOS tube M3 is turned on.

[0037] In Figure 2 In the embodiment shown, the charging circuit 132 adopts a charging IC (integrated circuit) with path control function, i.e. the charging circuit 132 realizes the function of the switching circuit 130, and the charging circuit 132 is equivalent to the switching circuit 130 with charging function. When the main battery 112 is removed from the battery compartment, the voltage of the voltage bus drops to less than the preset threshold, at which time the output of the voltage transformation circuit 124 is turned off, and the charging circuit 132 automatically switches to the backup power supply 114 (i.e. the lithium battery) to supply power to the device power output port 120. When the battery compartment is installed with a new main battery 112, the voltage of the voltage bus restores to 24V, the voltage transformation circuit 124 restores the output of 5V DC, and the charging circuit 132 switches to the 5V DC output by the voltage transformation circuit 124 to supply power to the device power output port 120. In an embodiment of the present application, the host computer includes an RK3588S chip, which controls the power-off of part of the modules of the device and reduces the working frequency of the CPU to reduce power consumption when entering the sleep mode. The charging of the backup power supply 114 (i.e. the lithium battery) by the charging circuit 132 is controlled by the RK3588S chip to avoid overcharging and over-discharging of the lithium battery. In an embodiment of the present application, the RK3588S chip communicates with the charging circuit 132 through an I2C bus to transmit data for charging the lithium battery, and controls the charging of the lithium battery according to the data. In an embodiment of the present application, the charging circuit 132 includes a BQ25703 chip, and the device further includes a CW2015 chip. The BQ25703 is a charging IC supporting USB power supply, and the CW2015 is a power meter IC, which work together with the RK3588S chip to provide stable power supply and charging management for the device.

[0038] In an embodiment of the present application, the control circuit 150 controls the device to enter the sleep mode, and the estimated power consumption of the device is about 7W, corresponding to a voltage of 3.6V and a current of 2A. According to the calculation: 2x1000x(3 / 60) / 0.5=200mAH, the capacity of the lithium battery of the backup power supply 114 is not less than 200mAH. Among them, 2x1000 represents a current of 2000mA, 3 / 60 represents 3 minutes converted to 3 / 60 hours, and 0.5 represents a reserved 50% margin.

[0039] Example 2:

[0040] A single lithium battery is used as the backup power supply 114, and the backup power supply board 30 is connected in parallel with the host computer through a load switch component to perform backup power supply control. Figure 3 This is the topology of the partial circuit structure of Example 2. Figure 3 In the embodiment shown, the load switch assembly includes a first load switch 134 and a second load switch 136. The charging circuit 132 and the backup power supply 114 are provided on a backup power supply board 30, which is connected in parallel with the host computer 10 and has a detachable structure that can be detached from the host computer 10. Figure 3 In the embodiment shown, the backup power board 30 is connected to the host computer 10 via a DC 5V interface, a ground interface (GND), a backup power interface, and an I2C interface. In one embodiment of the present application, the backup power board 30 is connected to the host computer 10 via a connector, and one of the backup power board 30 and the host computer 10 is provided with a male connector and the other is provided with a female connector. The male connector and the female connector include a DC 5V interface, a ground interface, a backup power interface, and an I2C interface. In another embodiment of the present application, the backup power board 30 and the host computer 10 can also be connected via a cable, that is, the backup power board 30 and the host computer 10 are both provided with a DC 5V interface, a ground interface, a backup power interface, and an I2C interface, and these interfaces on the backup power board 30 are connected to the corresponding interfaces on the host computer 10 via cables. The backup power board 30 is independent. For models without quick-release batteries, the backup power board 30 can be omitted. That is, the device does not have the backup power board 30, nor does it have the backup power supply 114, charging circuit 132, inductor L1 and other structures on the backup power board 30, in order to save costs. The input end of the overvoltage protection circuit 122 is connected to the voltage bus of the main battery 112 for voltage protection. Figure 3 In the embodiment shown, the main battery 112 outputs 24V DC power, and the voltage bus is a 24V bus. The voltage conversion circuit 124 is connected to the output end of the overvoltage protection circuit 122 and converts the voltage output from the output end into a DC voltage of a preset voltage value. Figure 3 In the illustrated embodiment, the voltage conversion circuit 124 is a DC-DC 5V circuit that outputs 5V direct current.

[0041] Figure 3The illustrated embodiment uses the path control function of the load switch assembly to switch the backup power supply 114. In an embodiment of the present application, the load switch assembly includes a first load switch 134 and a second load switch 136, the first load switch 134 is connected to the voltage bus and the device power output port 120, and the second load switch 136 is connected to the backup power supply and the device power output port 120. The first load switch 134 and the second load switch 136 are interlocked, that is, when the first load switch 134 is on, the second load switch 136 is off, and when the first load switch 134 is off, the second load switch 136 is on. When the voltage provided by the main battery 112 meets the first condition, the first load switch 134 controls the main battery supply branch to be turned on, so that the main battery 112 supplies power to the device. When the voltage provided by the main battery 112 meets the second condition, the second load switch 136 controls the backup battery supply branch to be turned on, so that the backup power supply 114 supplies power to the device. Specifically, when the battery is replaced, the main battery 112 is taken out of the battery compartment, the voltage of the voltage bus drops to less than a preset threshold value, at this time the output of the voltage conversion circuit 124 is turned off, and the load switch assembly provided in the host computer 10 automatically switches to the backup power supply 114 (i.e. lithium battery) to supply power to the device power output port 120. When the battery compartment is installed with a new main battery 112, the voltage bus restores 24V voltage, the voltage conversion circuit 124 restores the output of 5V direct current, and the load switch assembly switches to the 5V direct current output by the voltage conversion circuit 124 to supply power to the device power output port 120, and at the same time, the 5V output is charged to the backup power supply 114 (i.e. lithium battery) on the backup power supply board 30. In an embodiment of the present application, the RK3588S chip communicates with the charging circuit 132 through the I2C bus to transmit data of lithium battery charging, and controls the lithium battery charging according to the data to avoid overcharging and overdischarging of the lithium battery.

[0042] Embodiment 3:

[0043] The supercapacitor is used as the backup power supply 114, and the backup power supply control is performed by the charging and discharging IC of the supercapacitor. Figure 4 is a topology of part of the circuit structure of Embodiment 3. In Figure 4 In the illustrated embodiment, the switching circuit 130 and the backup power supply 114 are arranged on the backup power supply board 30, the backup power supply board 30 is connected in parallel with the host computer 10, and the backup power supply board 30 adopts a detachable structure which can be detached from the host computer 10. In Figure 4 In the illustrated embodiment, the backup power supply board 30 is connected with the host computer 10 through a direct current 5V interface, a ground wire interface (GND) and an RDY interface. The backup power supply board 30 is independent, and for a model without quick-detachable battery, the backup power supply board 30 can not be installed. The input end of the overvoltage protection circuit 122 is connected to the voltage bus of the main battery 112 for voltage protection. In Figure 4In the embodiment shown, the main battery 112 outputs 24V DC, and the voltage bus is a 24V bus. The voltage conversion circuit 124 is connected to the output end of the overvoltage protection circuit 122, and converts the voltage output by the output end into a preset DC voltage value. In Figure 4 In the embodiment shown, the voltage conversion circuit 124 is a DC-DC 5V circuit, and outputs 5V DC. In an embodiment of the present application, the host computer includes an RK3588S chip, which controls the power-off of part of the modules of the device and reduces the working frequency of the CPU to reduce power consumption when entering the sleep mode.

[0044] In Figure 4 In the embodiment shown, the switching circuit 130 includes a charge-discharge IC of the supercapacitor, which has a switching control function of the backup power supply. In an embodiment of the present application, the charge-discharge IC uses a MAX38890 chip; in other embodiments, the charge-discharge IC can also use other chips, such as tps61094, etc. When the main battery 112 is removed from the battery compartment, the voltage of the voltage bus drops to less than a preset threshold value, at which time the output of the voltage conversion circuit 124 is turned off, and the MAX38890 chip automatically switches to the backup power supply 114 (i.e., the supercapacitor) to supply power to the device power output port 120. When the battery compartment is installed with a new main battery 112, the voltage bus restores to 24V, the voltage conversion circuit 124 resumes outputting 5V DC to supply power to the device power output port 120, and the MAX38890 chip stops supplying power to the device power output port 120, while the 5V output is charged to the supercapacitor of the backup power supply board 30. The backup power supply board 30 of embodiment 3 can be independently set, i.e., the backup power supply board 30 uses a detachable structure that can be detached from the host computer 10 and is connected in parallel with the host computer 10, or can be set in the host computer 10. For models without quick-release batteries, the backup power supply board 30 can not be installed. In an embodiment of the present application, when the MAX38890 chip is working normally, its RDY pin outputs a high level, sending a signal to the RK3588S indicating that the output voltage is normal. If the output voltage is abnormal, the RDY pin will output a low level, sending a fault signal to the RK3588S, triggering the corresponding protection mechanism or taking corrective measures to prevent damage to the device or loss of data. Figure 5 is a circuit schematic diagram of the backup power supply board 30 in embodiment 3. In Figure 5 In the embodiment shown, the supercapacitor is connected to the CAP pin of the MAX38890 chip. The SYS pin of the MAX38890 chip is connected to the device power output port 120.

[0045] In an embodiment of the present application, the control circuit 140 controls the device to enter the sleep mode, and the power consumption of the device is about 7W, corresponding to a voltage and a current of 3.6V and 2A respectively. The voltage range of the super capacitor is 1.5V~2.7V. According to Q=It=CU, the calculation is as follows: C=It / dU=(2×3×60) / (2.7-1.5)=300F. Therefore, the capacitance value of the super capacitor is not less than 300F. Among them, 2 is the 2A current, 3×60 is the power supply for 180 seconds, and 2.7-1.5 represents the voltage of the capacitor from 2.7V to 1.5V.

[0046] Embodiment 4:

[0047] The super capacitor is used as the backup power supply 114, and the super capacitor is directly connected in series to the voltage bus. Figure 6 is a topology of part of the circuit structure of Embodiment 4. In Figure 6 In the embodiment shown in FIG. 8, the switching circuit 130 includes a charge-discharge IC of the super capacitor, which is connected in series to the voltage bus and connected in series between the main battery 112 and the overvoltage protection circuit 122. The charge-discharge IC has a switching control function of the backup power supply. In an embodiment of the present application, the charge-discharge IC uses an LTC3350 chip. When the main battery 112 is taken out from the battery compartment, the voltage of the voltage bus drops to less than a preset threshold value, at which time the LTC3350 chip disconnects the 24V bus and automatically switches to the backup power supply 114 (i.e., the super capacitor) to supply power to the device power output port 120, or supplies power to the device power output port 120 through BOOST. When the battery compartment is installed with a new main battery 112, the voltage of the voltage bus recovers to 24V, and the LTC3350 chip restores the power supply to the power output port 120 through the 24V bus, and the 24V bus charges the super capacitor through the constant-current BUCK. The main battery 112, the switching circuit 130 and the backup power supply 114 of Embodiment 4 are arranged on the backup power supply board. The backup power supply board can be independently arranged, i.e., the backup power supply board has a detachable structure that can be detached from the upper computer 10 and connected in parallel to the upper computer 10; or arranged in the upper computer 10 or the lower computer. For the machine type without quick-release battery, the backup power supply board can not be installed. The backup power supply 114 in Embodiment 4 can include at most 4 super capacitors connected in series. Since the super capacitors are connected in series to the voltage bus, in an embodiment of the present application, the output voltage of the super capacitors connected in series can be set to be the same as the voltage of the bus. For example, for a device with a 24V bus, the output voltage of the super capacitors connected in series is 24V.

[0048] In an embodiment of the present application, the foregoing battery replacement without shutdown scheme is applied to a robot. For example, it is applied to a delivery service robot. After the battery compartment door is opened, the robot enters a hibernation mode. In the hibernation mode, the core sensors (rgbd, radar, face camera, tray camera, etc.) of the robot are turned off, the communication module (such as 4G / 5G / wifi, etc.) is turned off, the lora module is turned off, the esp module is turned off, the screen brightness is reduced, and the advertising screen is turned off. At the same time, the battery replacement countdown is displayed on the screen. For example, for a timer 160, a preset time length of 2 minutes is set, and a 2-minute countdown is displayed. If the battery replacement is not completed within the 2-minute countdown, the robot is automatically turned off.

[0049] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", "ideal embodiments", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features of the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present application.

[0051] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A battery-powered device, characterized in that: include: Backup power supply; Battery compartment, used to install the main battery; A compartment cover, used for covering the battery compartment; a sensor for detecting whether the compartment cover is closed, the sensor being configured to output a first signal when detecting that the compartment cover is in an open state, and to output a second signal when detecting that the compartment cover is in a closed state; a switching circuit configured to use the main battery to power the device when detecting that the voltage provided by the main battery meets a first condition, and to use the backup power supply to power the device when detecting that the voltage provided by the main battery meets a second condition; a timer connected to the sensor, the timer being configured to start timing upon receiving the first signal, reset the timing upon receiving the second signal, and send a third signal when the timing reaches a preset time; A control circuit is connected to the sensor and the timer, and is configured to control some modules of the device to be powered off when the first signal is received, control some modules to be powered on when the second signal is received and the device is powered by the main battery, and control the device to be powered off when the third signal is received.

2. The battery-powered device according to claim 1, wherein: It also includes a charging circuit, which is used to charge the backup power supply when the device is powered by the main battery.

3. The battery-powered device according to claim 1, wherein: Also includes: an overvoltage protection circuit, wherein an input end of the overvoltage protection circuit is connected to a voltage bus of the main battery; A voltage conversion circuit is connected to the output end of the overvoltage protection circuit and is used to convert the voltage output by the output end of the overvoltage protection circuit into a voltage of a preset voltage value to power the device.

4. The battery-powered device according to any one of claims 1 to 3, characterized in that: The backup power source is a lithium battery; and / or, The switching circuit is connected in series in the upper computer of the device.

5. The battery-powered device according to claim 2, wherein: It also includes a backup power supply board, on which the charging circuit and backup power supply are arranged. The backup power supply board is connected in parallel with the host computer of the device, and the backup power supply board adopts a detachable structure that can be detached from the host computer; the backup power supply is a lithium battery.

6. The battery-powered device according to claim 5, characterized in that The switching circuit includes a load switch component arranged in the host computer, and the load switch component is configured to use the main battery to power the device when it is detected that the voltage provided by the main battery meets a first condition, and to use the backup power supply to power the device when it is detected that the voltage provided by the main battery meets a second condition.

7. The battery-powered device according to claim 6, characterized in that The load switch assembly includes a first load switch connected to the voltage bus of the main battery and a second load switch connected to the backup power supply, the first load switch and the second load switch being interlocked, such that when the first load switch is turned on, the second load switch is turned off, and when the first load switch is turned off, the second load switch is turned on; In response to the voltage provided by the main battery meeting the first condition, the first load switch is turned on so that the main battery can power the device; in response to the voltage provided by the main battery meeting the second condition, the second load switch is turned on so that the backup power supply can power the device.

8. The battery-powered device according to any one of claims 1 to 3, characterized in that: The backup power source is a supercapacitor.

9. The battery-powered device according to claim 3, wherein: The backup power supply includes two or more supercapacitors connected in series, and the device includes a charge and discharge circuit connected to the supercapacitor, the charge and discharge circuit is connected in series with the voltage bus, and the charge and discharge circuit is connected in series between the main battery and the overvoltage protection circuit.

10. A robot, characterized in that: A battery-powered device comprising the battery-powered device according to any one of claims 1 to 9.

Images