Charger and control method thereof

Abstract

A charger and a control method are disclosed. The charger according to the present specification includes a communication unit that obtains temperature information of a battery from an external battery, and a processor that applies power to the battery based on the temperature information transmitted from the communication unit. When the temperature of the battery is measured within a preset first interval, the processor may apply a pulse wave of a first period to the battery. Accordingly, even if the temperature of the battery exceeds the allowable charging range due to the discharge of the battery built into the vacuum cleaner, the battery can be charged more quickly, thereby reducing the total time required to charge the battery.

Description

Technology Field

[0001] This specification relates to a charger and a control method thereof, and more specifically, to a charger and a control method for intelligently charging a battery attached to a vacuum cleaner. Background Technology

[0002] Generally, a vacuum cleaner is a home appliance that uses electricity to suck up air to collect small debris or dust and fill it into a dust bin inside the product, and it is commonly referred to as a vacuum cleaner.

[0003] These vacuum cleaners can be classified into manual vacuum cleaners, which are used for cleaning by moving the vacuum cleaner directly, and automatic vacuum cleaners, which are used for cleaning by driving on their own. Manual vacuum cleaners can be classified into canister-type vacuum cleaners, upright vacuum cleaners, handheld vacuum cleaners, stick-type vacuum cleaners, etc., depending on the form of the vacuum cleaner.

[0004] In the past, canister-type vacuum cleaners were widely used for household use, but recently, handheld and stick vacuum cleaners, which offer improved convenience by providing the dust bin and the main body as a single unit, are becoming more popular.

[0005] Canister-type vacuum cleaners have the main body and the suction nozzle connected by a rubber hose or pipe, and depending on the situation, a brush can be attached to the nozzle for use.

[0006] Hand vacuum cleaners maximize portability; although lightweight, their short length may limit the cleaning area when sitting. Therefore, they are used to clean localized areas such as desks, sofas, or inside cars.

[0007] Stick vacuums can be used while standing, allowing for cleaning without bending over. This makes them advantageous for cleaning large areas. While handheld vacuums are used for cleaning narrow spaces, stick vacuums can clean larger areas and reach high places that are out of reach. Recently, stick vacuums are also being offered in modular types, allowing users to actively switch between different types of vacuums for various tasks.

[0008] In addition, recently, products that improve user convenience by allowing both handheld and stick vacuum cleaners to be used together are being released.

[0009] Meanwhile, a rechargeable battery can be attached to the handheld / stick vacuum cleaner. When not in use, the user can charge the built-in battery by placing the vacuum cleaner on a charger connected to a power outlet.

[0010] Meanwhile, battery temperature significantly affects performance and safety. For this reason, vacuum cleaner batteries are marked with an acceptable operating temperature. In other words, using the battery at temperatures above the indicated allowable temperature may pose a threat to user safety.

[0011] In addition, the allowable discharge temperature and allowable charge temperature specifications vary for each battery. Meanwhile, the allowable discharge temperature range is wider than the allowable charge temperature range. In this case, if the battery is discharged to the maximum value of its allowable discharge temperature range, it will exceed the allowable charge temperature range. Consequently, the user must wait for the battery temperature to drop to the allowable charge temperature range before charging, which unnecessarily increases the time required for charging. Prior art literature

[0012] Korean Registered Patent Publication 10-1640706 B1 (Published July 18, 2016) Korean Registered Utility Model Publication 20-0366079 Y1 (Published October 28, 2004) The problem to be solved

[0013] The purpose of this specification is to provide a control method for a charger that can charge a vacuum cleaner battery more quickly and safely.

[0014] In addition, the present specification aims to provide a charger capable of efficiently charging a battery even at temperatures outside the permissible charging range of a vacuum cleaner battery. means of solving the problem

[0015] A control method for a charger according to one embodiment of the present specification comprises: a step of obtaining temperature information of the battery from the battery when connected to the battery of the vacuum cleaner; and a step of charging the battery based on the temperature information, wherein the step of charging the battery is characterized by applying a pulse wave of a first period to the battery when the temperature of the battery is measured within a preset first interval.

[0016] In addition, the first section may be characterized by being determined based on preset maximum charge allowable temperature information and preset minimum charge allowable temperature information.

[0017] In addition, the first period may be characterized as being less than 1 second.

[0018] In addition, it may be characterized by including a step of changing the first cycle based on the temperature information.

[0019] In addition, it may be characterized by including a step of changing the duration of the pulse wave based on the temperature information.

[0020] A charger according to one embodiment of the present specification includes: a communication unit that obtains temperature information of the battery from an external battery; and a processor that applies power to the battery based on the temperature information transmitted from the communication unit, wherein the processor applies a pulse wave of a first period to the battery when the temperature of the battery is measured within a preset first interval.

[0021] In addition, the processor may be characterized by determining the first interval based on preset maximum charge allowable temperature information and preset minimum charge allowable temperature information.

[0022] In addition, the processor may be characterized by determining the first cycle in less than 1 second.

[0023] In addition, the processor may be characterized by changing the first cycle based on the temperature information.

[0024] In addition, the processor may be characterized by changing the duration of the pulse wave based on the temperature information. Effects of the invention

[0025] The vacuum cleaner and the control method according to the present specification can shorten the total time required to charge the battery by charging the battery more quickly, even if the temperature of the battery exceeds the allowable charging range due to the discharge of the battery built into the vacuum cleaner.

[0026] In addition, according to at least one of the embodiments of the present specification, the battery can be safely charged even when the temperature of the vacuum cleaner's battery is in a dangerous state outside the permissible charging range, thereby preventing risks that may occur during battery charging. Brief explanation of the drawing

[0027] FIG. 1 is a diagram showing a configuration for controlling a vacuum cleaner according to an embodiment of the present specification. Figure 2 is a control block diagram of each component forming the control system of a vacuum cleaner and a smart device. FIG. 3 illustrates a customized cleaning information providing device according to one embodiment of the present specification. Figure 4 is a block diagram showing an example of the processor of Figure 3. FIG. 5 is an exploded perspective view showing a vacuum cleaner according to one embodiment. FIG. 6 is a figure showing a control method of a vacuum cleaner according to one embodiment. Figure 7 is a block diagram showing the connection relationships of the vacuum cleaner. FIG. 8 is a cross-sectional view showing the connection portion between the vacuum cleaner body and the cleaning module according to the first embodiment. FIG. 9 is a plan view showing the joint portion of the vacuum cleaner body and the cleaning module according to the first embodiment. FIG. 10 is a plan view showing the joint portion of the vacuum cleaner body and the cleaning module according to the second embodiment. FIG. 11 is a flowchart illustrating a control method of a charger according to an embodiment of the present specification. FIG. 12 is a block diagram illustrating a charger and a battery according to an embodiment of the present specification. Figure 13 is a diagram illustrating the battery and charger of Figure 12 from the perspective of signal processing. FIG. 14 shows a temperature distribution according to an embodiment of the present specification. Figure 15 is a graph showing the change in temperature over time. FIG. 16 illustrates one example of a pulse wave according to an embodiment of the present specification. FIG. 17 illustrates another example of a pulse wave according to an embodiment of the present specification. FIG. 18 illustrates another example of a pulse wave according to an embodiment of the present specification. FIG. 19 illustrates another example of a pulse wave according to an embodiment of the present specification. FIG. 20 illustrates another example of a pulse wave according to an embodiment of the present specification. Specific details for implementing the invention

[0028] Hereinafter, embodiments disclosed in this specification (discloser) will be described in detail with reference to the attached drawings, provided that identical or similar components are given the same reference number regardless of drawing symbols, and redundant descriptions thereof will be omitted.

[0029] In describing the embodiments disclosed in this specification, when it is mentioned that a component is "connected" or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, or that there may be other components in between.

[0030] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this specification.

[0031] Meanwhile, the term 'discloser' can be replaced with terms such as 'document', 'specification', or 'description'.

[0032] FIG. 1 is a diagram showing a configuration for controlling a vacuum cleaner (100) according to an embodiment of the present specification, and FIG. 2 is a control block diagram of each component forming a control system of the vacuum cleaner (100) and a smart device (20).

[0033] Referring to FIG. 1, a control system of a vacuum cleaner (100) according to an embodiment of the present specification may include a vacuum cleaner (100), a smart device (20) equipped with an application (APP) for controlling or managing the vacuum cleaner (100), a server (30) for managing the application, and an internet (40) for communication between the smart device (20), the vacuum cleaner (100), and the server (30).

[0034] Referring to FIG. 2, the vacuum cleaner (100) may include a control unit (101), an input unit (102), an output unit (103), a sensing unit (104), a memory (105), a communication module (106), and a power supply unit (107).

[0035] The control unit (101) may include a processor. For example, it may include a microcontroller (MCU: Micro Controller Unit).

[0036] The input unit (102) may be formed on a control panel located near the handle of the vacuum cleaner (100) and may be provided in the form of a touch button or a push button. Alternatively, it may be provided in the form of a microphone to recognize voice commands. In addition, an input unit including a camera or an image sensor may be provided to recognize user gestures.

[0037] The output unit (103) may include a display provided as a video output unit and a speaker provided as a sound output unit.

[0038] The display may be provided on a control panel or as a separate display area, and may include an LCD panel that outputs images or videos. Alternatively, it may simply include a single or multiple light-emitting parts.

[0039] The speaker can output selection sounds, warning sounds, cleaning start or cleaning completion notification signals, etc. Additionally, the speaker may be provided in an area other than the handle that the user can grasp.

[0040] The sensing unit (104) may include a current sensor that detects the current value (or voltage value) of the driving unit described later, a load sensor that detects the load of the driving unit, a torque sensor that detects the torque of the driving unit, and a timer that detects the operating time and time.

[0041] The memory (105) may include DRAM (RAM that requires refresh), SRAM (RAM that does not require refresh), ROM, EPROM, EEPROM, etc.

[0042] And the communication module (106) may include a wired communication module including Power Line Communication (PLC) capable of internet communication or a wireless communication module including Wi-Fi. The communication module (106) may include a transceiver or an antenna. And the transceiver may include a transmitter and a receiver.

[0043] In addition, it may further include a drive unit that operates the power supply unit (107) and the vacuum cleaner (100). The drive unit may include a drive motor or a motor pump. The drive motor may include a main drive motor installed in the vacuum cleaner body to generate suction force and an auxiliary drive motor installed in the suction nozzle provided at the vacuum cleaner suction end to generate rotational force of the roller, etc.

[0044] Meanwhile, the smart device (20) may include a smartphone that can be carried by the user. The smart device (20) may include a control unit (21), an input unit (22), a memory (23), a power supply unit (24), a wireless communication unit (25), an audio output unit (26), and a display unit (27).

[0045] The input unit (22) may include a touch-type button for inputting commands by touching the display unit (27).

[0046] And the wireless communication unit (25) may be a wireless communication module capable of communicating with the Internet (40).

[0047] And the sound output unit (26) may include a speaker.

[0048] According to the above configuration, a user can run an application (APP) for managing or controlling a vacuum cleaner (100) installed on a smart device (20), and through this application, check the management status of the vacuum cleaner (100) or input control commands. Additionally, the user can receive information regarding the management status of the vacuum cleaner (100) stored in the server (30) via the internet (40) to the smart device (20). The control command input from the smart device (20) is transmitted to the application server (30) via the internet (40), and the server (30) can transmit the control command to the communication module (106) of the vacuum cleaner (100) via the internet (40).

[0049] Additionally, a control command received through the communication module (106) is received by the control unit (101) of the vacuum cleaner (100), and the control unit (101) can control the operation of the driving unit (105) according to the received control command.

[0050] Additionally, the control unit (101) of the vacuum cleaner (100) can transmit events occurring during the cleaning process received from the sensing unit (104) via a wired or wireless connection through the communication module (106). The event information transmitted via the communication module (106) of the vacuum cleaner (100) can be transmitted to the server (30) via the internet (40). The server (30) can then transmit the received event information to the wireless communication unit (25) of the smart device (20) via the internet (40).

[0051] Additionally, event information received by the wireless communication unit (25) can be displayed on the display unit (27) by the control unit (21) of the smart device (20).

[0052] FIG. 3 illustrates a customized cleaning information providing device (100) according to one embodiment of the present specification.

[0053] Referring to FIG. 3, the customized cleaning information providing device (100) may include a control unit (101), an input unit (102), an output unit (103), a sensing unit (104), a memory (105), a communication module (106) and / or a power supply unit (107).

[0054] The control unit (101) may include a processor. For example, it may include a microcontroller (MCU: Micro Controller Unit).

[0055] The input unit (102) may include a physical button or touch button that receives a physical signal or touch signal from the outside based on the control of the control unit (101), and a microphone that receives an audio signal. In addition, it may include a camera or image sensor that receives an image from the outside based on the control of the control unit (101).

[0056] The output unit (103) may include a speaker that outputs an audio signal based on the control of the control unit (101). For example, the speaker may provide customized cleaning information in the form of an audio signal.

[0057] The output unit (103) may include a display that outputs visual information based on the control of the control unit (101). The display may be formed as a touch screen by forming a layered structure with a touch sensor or as an integral unit. This touch screen functions as a user input unit that provides an input interface between the customized cleaning information providing device (100) and the user, and at the same time, can provide an output interface between the customized cleaning information providing device (100) and the user. For example, the display can obtain information for user registration from the user. Additionally, the display can output customized cleaning information to the user in the form of visual information. That is, the display can be an input interface of the customized service providing device (100), and at the same time, can be an output interface.

[0058] The sensing unit (104) may include sensors that sense one or more of the current, voltage, load, and torque of the driving unit of the customized cleaning information providing device (100). It may also include a timer that can determine the operating time and operating time of the driving unit. In addition, it may include a camera or an image sensor to detect a user or obstacles.

[0059] The memory (105) stores data that supports various functions of the customized cleaning information providing device (100). The memory (105) can store a number of applications (application programs or applications) running on the customized cleaning information providing device (100), data for the operation of the customized cleaning information providing device (100), and commands. At least some of these applications may be downloaded from an external server via wireless communication. In addition, at least some of these applications may exist on the customized cleaning information providing device (100) from the time of shipment for the basic functions of the customized cleaning information providing device (100) (e.g., data reception and transmission functions). Meanwhile, the applications may be stored in the memory (105), installed on the customized cleaning information providing device (100), and driven by the control unit (101) to perform the operation (or function) of the customized cleaning information providing device (100).

[0060] The communication module (106) may include one or more modules that enable wireless communication between the customized cleaning information providing device (100) and a wireless communication system, between the customized cleaning information providing device (100) and another customized cleaning information providing device (100), or between the customized cleaning information providing device (100) and an external server. Additionally, the communication module (106) may include one or more modules that connect the customized cleaning information providing device (100) to one or more networks. Here, the communication module (106) may be connected to a 5G communication system. The communication module (106) may perform wireless communication with another customized cleaning information providing device, an external server, or an external device (e.g., a mobile terminal) through the 5G communication system.

[0061] This communication module (106) may include at least one of a short-range communication unit and a wireless internet unit.

[0062] The wireless internet unit refers to a module for wireless internet access, which may be embedded in or externally installed in the customized cleaning information providing device (100). The wireless internet unit is configured to transmit and receive wireless signals in a communication network according to wireless internet technologies.

[0063] Wireless internet technologies include, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), HSDPA (High Speed ​​Downlink Packet Access), HSUPA (High Speed ​​Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc., and the above wireless internet unit transmits and receives data according to at least one wireless internet technology within a scope that includes internet technologies not listed above.

[0064] From the perspective that wireless internet access via WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is achieved through a mobile communication network, the wireless internet unit that performs wireless internet access through the mobile communication network may be understood as a type of mobile communication module.

[0065] The short-range communication unit is for short-range communication and can support short-range communication by utilizing at least one of the following technologies: Bluetooth, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus). Such a short-range communication unit can support wireless communication between a customized cleaning information providing device (100) and a wireless communication system, between a customized cleaning information providing device (100) and another customized cleaning information providing device (100), or between a customized cleaning information providing device (100) and a network where another mobile terminal (or external server) is located, via a short-range wireless communication network. The short-range wireless communication network may be a short-range wireless personal area network.

[0066] Here, another customized cleaning information providing device may be a device capable of exchanging data with (or interoperable with) the customized cleaning information providing device (100) according to the present specification. A short-range communication unit may detect (or recognize) another customized cleaning information providing device capable of communicating with the customized cleaning information providing device (100) in the vicinity of the customized cleaning information providing device (100). Furthermore, if the detected other customized cleaning information providing device is a customized cleaning information providing device authenticated to communicate with the customized cleaning information providing device (100) according to the present specification, the control unit (101) may transmit at least a portion of the data processed by the customized cleaning information providing device (100) to the other customized cleaning information providing device through the short-range communication unit. Accordingly, a user of the other customized cleaning information providing device may use the data processed by the customized cleaning information providing device (100) through the other customized cleaning information providing device. For example, according to this, the user may receive cleaning information from the customized cleaning information providing device (100) and output the cleaning information through the display of the other customized cleaning information providing device.

[0067] The power supply unit (107), under the control of the control unit (101), receives external power and internal power and supplies power to each component included in the customized cleaning information providing device (100). This power supply unit (107) includes a battery, and the battery may be a built-in battery or a replaceable battery.

[0068] According to an embodiment of the present specification, the control unit (101) can control the input unit (102), output unit (103), sensing unit (104), memory (105), communication module (106) and power supply unit (107).

[0069] According to an embodiment of the present specification, the control unit (101) can control the input unit (102) and the output unit (103) to provide customized cleaning information.

[0070] According to an embodiment of the present specification, the control unit (101) can control the sensing unit (104) to obtain information required for the customized cleaning information providing device (100). For example, the control unit (101) can obtain current / voltage values, load values, torque values, operating time and operating time information, user recognition information and / or obstacle detection information from the sensing unit (104).

[0071] According to an embodiment of the present specification, the control unit (101) can acquire a plurality of user face images stored in memory (105) and generate / learn a face classification model for classifying user faces by using only a preset number of images among the plurality of user face images (Meta Learning). Additionally, the control unit (101) can acquire a plurality of food images stored in memory (105) and generate / learn a food classification model for classifying food by using only a preset number of images among the plurality of food images.

[0072] According to an embodiment of the present specification, the control unit (101) can control the communication module (106) to transmit customized cleaning information to an external mobile terminal.

[0073] A detailed description of the function / operation of the control unit (101) will be provided later.

[0074] Figure 4 is a block diagram showing an example of the processor of Figure 3.

[0075] As shown in FIG. 4, the control unit (101) of FIG. 4 may be an AI device (50), but is not necessarily limited thereto.

[0076] The AI ​​device (50) may include an electronic device including an AI module capable of performing AI processing or a server including the AI ​​module. Additionally, the AI ​​device (50) may be configured to perform at least some of the AI ​​processing together with the configuration of at least a part of the customized cleaning information providing device (100) shown in FIG. 3.

[0077] The above AI processing may include all operations related to the control of the customized cleaning information providing device (100) illustrated in FIG. 3. For example, the customized cleaning information providing device (100) may perform processing / judgment and control signal generation operations by AI processing sensing data or acquired data. Additionally, for example, the customized cleaning information providing device (100) may perform control of an intelligent electronic device by AI processing data received through a communication unit.

[0078] The above AI device (50) may be a client device that directly uses the AI ​​processing results, or a device in a cloud environment that provides the AI ​​processing results to other devices.

[0079] The above AI device (50) may include an AI processor (51), memory (55) and / or a communication unit (57).

[0080] The above AI device (50) is a computing device capable of learning a neural network and can be implemented as various electronic devices such as a server, desktop PC, laptop PC, tablet PC, etc.

[0081] The AI ​​processor (51) can train a neural network using a program stored in memory (55). In particular, the AI ​​processor (51) can train a neural network for recognizing vehicle-related data. Here, the neural network for recognizing vehicle-related data can be designed to simulate the structure of the human brain on a computer and may include multiple network nodes having weights that simulate the neurons of a human neural network. The multiple network modes can exchange data according to their respective connection relationships to simulate the synaptic activity of neurons that exchange signals through synapses. Here, the neural network may include a deep learning model that has evolved from a neural network model. In the deep learning model, multiple network nodes can be located in different layers and exchange data according to convolutional connection relationships. Examples of neural network models include various deep learning techniques such as deep neural networks (DNN), convolutional deep neural networks (CNN), recurrent Boltzmann machines (RNN), restricted Boltzmann machines (RBM), deep belief networks (DBN), and deep Q-networks, and can be applied in fields such as computer vision, speech recognition, natural language processing, and speech / signal processing.

[0082] Meanwhile, a processor that performs the functions described above may be a general-purpose processor (e.g., CPU), but may also be an AI-dedicated processor for artificial intelligence learning (e.g., GPU).

[0083] The memory (55) can store various programs and data required for the operation of the AI ​​device (50). The memory (55) can be implemented as non-volatile memory, volatile memory, flash memory, hard disk drive (HDD), or solid-state drive (SDD). The memory (55) is accessed by the AI ​​processor (51), and the reading / writing / modification / deletion / updating of data by the AI ​​processor (51) can be performed. In addition, the memory (55) can store a neural network model (e.g., deep learning model (26)) generated through a learning algorithm for data classification / recognition according to one embodiment of the present specification.

[0084] Meanwhile, the AI ​​processor (51) may include a data learning unit (52) that learns a neural network for data classification / recognition. The data learning unit (52) can learn criteria regarding which training data to use to determine data classification / recognition, and how to classify and recognize data using the training data. The data learning unit (52) can learn a deep learning model by acquiring training data to be used for learning and applying the acquired training data to a deep learning model.

[0085] The data learning unit (52) may be manufactured in the form of at least one hardware chip and mounted on the AI ​​device (50). For example, the data learning unit (52) may be manufactured in the form of a dedicated hardware chip for artificial intelligence (AI), or may be manufactured as part of a general-purpose processor (CPU) or a dedicated graphics processor (GPU) and mounted on the AI ​​device (50). Additionally, the data learning unit (52) may be implemented as a software module. If implemented as a software module (or a program module containing instructions), the software module may be stored on a non-transitory computer-readable media. In this case, at least one software module may be provided by an operating system (OS) or by an application.

[0086] The data learning unit (52) may include a learning data acquisition unit (53) and a model learning unit (54).

[0087] The training data acquisition unit (53) can acquire training data required for a neural network model for classifying and recognizing data. For example, the training data acquisition unit (53) can acquire vehicle data and / or sample data to be input into a neural network model as training data.

[0088] The model learning unit (54) can learn to have a judgment criterion regarding how a neural network model classifies a predetermined data using the acquired learning data. At this time, the model learning unit (54) can train the neural network model through supervised learning, which uses at least a portion of the learning data as a judgment criterion. Alternatively, the model learning unit (54) can train the neural network model through unsupervised learning, which discovers the judgment criterion by learning on its own using the learning data without supervision. In addition, the model learning unit (54) can train the neural network model through reinforcement learning using feedback on whether the result of the situation judgment based on learning is correct. Furthermore, the model learning unit (54) can train the neural network model using a learning algorithm including error back-propagation or gradient descent.

[0089] When the neural network model is trained, the model training unit (54) can store the trained neural network model in memory. The model training unit (54) can also store the trained neural network model in the memory of a server connected to the AI ​​device (50) via a wired or wireless network.

[0090] The data learning unit (52) may further include a learning data preprocessing unit (not shown) and a learning data selection unit (not shown) to improve the analysis results of the recognition model or to save resources or time required to create the recognition model.

[0091] The learning data preprocessing unit can preprocess the acquired data so that the acquired data can be used for learning to make situational judgments. For example, the learning data preprocessing unit can process the acquired data into a pre-set format so that the model learning unit (54) can use the acquired learning data for learning to recognize images.

[0092] Additionally, the training data selection unit may select data necessary for training from among the training data acquired by the training data acquisition unit (53) or the training data preprocessed by the preprocessing unit. The selected training data may be provided to the model training unit (54). For example, the training data selection unit may select only the data regarding objects included in a specific area as training data by detecting a specific area among the images acquired through the camera of the intelligent electronic device.

[0093] Additionally, the data learning unit (52) may further include a model evaluation unit (not shown) to improve the analysis results of the neural network model.

[0094] The model evaluation unit inputs evaluation data into a neural network model, and if the analysis result output from the evaluation data does not satisfy a predetermined standard, it may cause the model learning unit (52) to learn again. In this case, the evaluation data may be predefined data for evaluating a recognition model. For example, the model evaluation unit may evaluate that the predetermined standard is not satisfied if, among the analysis results of the recognition model learned for the evaluation data, the number or ratio of evaluation data for which the analysis result is inaccurate exceeds a preset threshold.

[0095] The communication unit (57) can transmit the AI ​​processing results by the AI ​​processor (51) to an external electronic device.

[0096] The above external electronic devices may include autonomous vehicles, robots, drones, AR devices, mobile devices, home appliances, etc.

[0097] For example, if the above external electronic device is an autonomous vehicle, the AI ​​device (50) may be defined as another vehicle or 5G network that communicates with the autonomous driving module vehicle. Meanwhile, the AI ​​device (50) may be functionally embedded and implemented in an autonomous driving module equipped within the vehicle. Additionally, the 5G network may include a server or module that performs autonomous driving-related control.

[0098] Meanwhile, although the AI ​​device (50) illustrated in FIG. 4 is described by functionally separating it into an AI processor (51), memory (55), and communication unit (57), it should be noted that the aforementioned components may be integrated into a single module and referred to as an AI module.

[0099] FIG. 5 is an exploded perspective view showing a vacuum cleaner (100) according to one embodiment.

[0100] Referring to FIG. 5, the vacuum cleaner (100) may include a vacuum cleaner body (200), a cleaning module (210) coupled to the vacuum cleaner body (200), a length adjustment member (220) connecting the vacuum cleaner body (200) and the cleaning module (210), a battery (400) coupled to the vacuum cleaner body (200), and a vacuum cleaner stand (300) on which the vacuum cleaner body (200) is mounted.

[0101] The vacuum cleaner body (200) may include a body portion (201) in which a suction motor (not shown) that generates suction power and a cyclone flow device (not shown) that separates dust from the sucked air are installed, a handle portion (202) connected to the rear of the body portion (201) and which can be grasped by a user, and a connecting portion (203) connected to the front of the body portion (201) to which a cleaning module (210) or a length adjustment member (220) is coupled.

[0102] The cleaning module (210) may include a suction part (211) for sucking up dust, etc., and a coupling part (212) that is coupled to the main body (200) of the vacuum cleaner or the length adjustment member (220).

[0103] One end of the length adjustment member (220) may be connected to the vacuum cleaner body (200), and the other end may be connected to the cleaning module (210). The length adjustment member (220) may adopt a structure in which the length is variable. The length adjustment member (220) may adopt a material that is elastically changeable. Furthermore, one end of the length adjustment member (220) may be connected to the vacuum cleaner body (200), and a suction part (not shown) may be provided at the other end, so that it can perform a suction function without a separate cleaning module being connected.

[0104] The battery (400) can be detachably connected to the body portion (201) of the vacuum cleaner body (200) to supply power for driving the vacuum cleaner (100). The battery (400) can also be detachably connected to the battery receiving portion (302) of the vacuum cleaner stand (300) to allow for charging. Additionally, two batteries (400) are provided, one of which is connected to the vacuum cleaner body (200) to supply power, and the other one of which is connected to the vacuum cleaner stand (300) to be charged.

[0105] The vacuum cleaner stand (300) may include a stand-type or wall-mounted body part (301), a battery receiving part (302) in which a battery (400) is charged, a vacuum cleaner support part (303) that supports the vacuum cleaner body (200), and a charging part (304) that is electrically connected to the battery (400) coupled to the vacuum cleaner body (200).

[0106] Although the drawing shows a wall-mounted body part (301), it may also include a stand-type body part (not shown) that is set up to stand on the floor.

[0107] And, while the vacuum cleaner body (200) is supported by the vacuum cleaner support (303), the battery (400) can be electrically connected to the charging unit (304). Thus, the user can charge the battery (400) while the vacuum cleaner body (200) is mounted on the vacuum cleaner stand (300).

[0108] And the vacuum cleaner stand (300) can be electrically connected to an external outlet (311) via a power line (310). The current delivered via the power line (310) can charge the first battery housed in the vacuum cleaner body (200) through the charging part (304) of the vacuum cleaner stand and charge the second battery housed in the battery housing (302).

[0109] In addition, the vacuum cleaner (100) may have a suction unit that performs various functions modularly mounted on the vacuum cleaner body (200). That is, multiple cleaning modules (210) are provided according to function, and the user can use the cleaning module (210) suitable for the cleaning target by attaching it to the vacuum cleaner body (200).

[0110] The cleaning module (210) may include a cleaning module equipped with a basic suction port for hardwood floors, a cleaning module equipped with a suction port for bedding, a cleaning module equipped with a suction port for mattresses, a cleaning module equipped with a suction port for carpets, and a cleaning module equipped with a wet mop. In addition, dedicated cleaning modules for various functions such as cleaning hardened dust, cleaning bendable crevices, and cleaning tops may be provided as modules.

[0111] The drawing also shows a cleaning module (221) equipped with a 2-in-1 suction port and a cleaning module (222) equipped with a crevice suction port mounted on a vacuum cleaner stand (300). The cleaning module (221) equipped with a 2-in-1 suction port can adjust the length of the brush by operating a button, so it can be used in a basic form when cleaning sofas or mattresses, and in a brush form when cleaning picture frames or furniture. The cleaning module (222) equipped with a crevice suction port is provided with a suction port in the form of a narrow nozzle, which is advantageous for sucking up dust and other debris by inserting it into narrow crevices.

[0112] FIG. 6 is a figure showing a control method of a vacuum cleaner (100) according to one embodiment.

[0113] The vacuum cleaner (100) according to the embodiment of the present specification is provided in a modular manner in which a cleaning module (210) is detachable, and can be used by changing an appropriate cleaning module (210) as needed.

[0114] The vacuum cleaner body (200) can receive information about the cleaning module in use and load information from the cleaning module (210). For example, the main circuit (MCU: Micro Controller Unit) provided in the vacuum cleaner body (200) can identify and store which cleaning module (210) is currently in use by measuring the current value (or voltage value) from the power line connected to the cleaning module (210). Also, since the current value of the power line may vary depending on the load applied to the cleaning module (210), the main circuit can also store and utilize load information or torque information applied to the cleaning module (210).

[0115] And the main circuit can store information regarding which cleaning module (210) was used at which time and for what duration, i.e., usage time information. And if the suction mode can be classified into strong / medium / weak depending on the rotational force of the suction motor of the vacuum cleaner body (200), the main circuit can store the usage time and usage output for each suction mode used by the user. And along with this information, the main circuit can transmit the accumulated usage time and usage frequency information for each cleaning module used by the user to the server (30).

[0116] The server (30) can provide cleaning history information to the user using accumulated information. The server (30) can also analyze the user's cleaning pattern and recommend a cleaning type required for the smart device (20) or vacuum cleaner (100) to notify the user that the cleaning time has arrived. For example, when analyzing the accumulated data of the vacuum cleaner (100), if it has been 2 months since the last cleaning of bedding, the user can be notified that it is time to clean the bedding through the application of the smart device (20).

[0117] In addition, the server (30) can notify that it is time to clean the cleaning module (210) parts, or that the cleaning module (210) is broken or that the replacement time has passed.

[0118] FIG. 7 is a block diagram showing the connection relationship of the vacuum cleaner (100).

[0119] Referring to FIG. 7(a), the cleaning module (210) and the vacuum cleaner body (200) are physically connected via a power line, the vacuum cleaner body (200) and the server (30) are connected via wireless communication, and the server (30) and the smart device (20) can be connected via wireless communication.

[0120] The connection part between the cleaning module (210) and the vacuum cleaner body (200) may be provided with a suction pipe that serves as a passage for dust sucked in by the cleaning module (210) to move, and a power line to provide power to the cleaning module (210), through which the suction force generated from the vacuum cleaner body (200) is transmitted to the cleaning module (210).

[0121] And the main circuit of the vacuum cleaner body (200) can obtain information about which cleaning module (210) is connected, whether it is currently in use, and the magnitude of the applied load or torque through the current value (or voltage value) of the power line.

[0122] Referring to FIG. 7(b), the cleaning module (210) and the vacuum cleaner body (200) are physically connected via a power line and are connected via wired communication, the vacuum cleaner body (200) and the server (30) are connected via wireless communication, and the server (30) and the smart device (20) can be connected via wireless communication.

[0123] The connection portion between the cleaning module (210) and the vacuum cleaner body (200) may be provided with a suction pipe that serves as a passage for dust sucked in by the cleaning module (210) to move, a power line to provide power to the cleaning module (210), and a communication line to transmit usage information of the cleaning module (210), through which suction power generated from the vacuum cleaner body (200) is transmitted to the cleaning module (210).

[0124] Furthermore, the main circuit of the vacuum cleaner body (200) can obtain information regarding which cleaning module (210) is connected, whether it is currently in use, and the magnitude of the applied load through information from the communication line. The current (or voltage) information of the power line contains noise, and if the magnitude of the noise is relatively large, it may be impossible to identify the information to be obtained from it. In such cases, by using a separate communication line, only the information to be obtained can be transmitted through a separate line. For example, when a cleaning module dedicated to bedding is connected and used, the operating current is very weak, so it may be difficult to obtain usage information through the power line. In this case, a communication line is provided separately from the power line, and usage information of the cleaning module (210) is transmitted through the communication line, making it possible to transmit information without any omissions.

[0125] Referring to FIG. 7 (c), the cleaning module (210) and the vacuum cleaner body (200) are physically connected via a power line and are also connected via wireless communication, the vacuum cleaner body (200) and the server (30) are connected via wireless communication, and the server (30) and the smart device (20) can be connected via wireless communication.

[0126] The cleaning module (210) may be provided with a transmitter for wirelessly transmitting usage information. The main body of the vacuum cleaner (200) may be provided with a receiver for receiving information from the cleaning module (210).

[0127] And the main circuit of the vacuum cleaner body (200) can obtain information through the information of the receiver regarding which cleaning module (210) is connected, whether it is currently in use, and the magnitude of the applied load. As a means of wireless communication that can be used, Zigbee or Bluetooth, etc., may be used.

[0128] FIG. 8 is a cross-sectional view showing the connection portion of the vacuum cleaner body (200) and the cleaning module (210) according to the first embodiment, and FIG. 9 is a plan view showing the connection portion of the vacuum cleaner body (200) and the cleaning module (210) according to the first embodiment, respectively.

[0129] The vacuum cleaner body (200) may have a connecting part (203) formed therein, which is connected to the front of the body part (201) and to which a cleaning module (210) or a length adjustment member (220) is coupled. The connecting part (203) may be provided in the form of a tube protruding from the front of the body part (201).

[0130] Additionally, a connecting part (212) that is coupled to a connecting part (203) may be formed at one end of the cleaning module (210) or the length adjustment member (220). The connecting part (212) may be provided in the form of a tube that can accommodate the connecting part (203). At this time, the inner diameter of the connecting part (212) may be the same as or slightly larger than the outer diameter of the connecting part (203).

[0131] The connecting part (203) and the coupling part (212) can be detachably coupled, and, for example, can be provided by the combination of a coupling groove (203c) formed to be recessed on the outer surface of the connecting part (203) and a coupling projection (212c) formed to be protruded on the inner surface of the coupling part (212).

[0132] And the connecting projection (212c) is connected to the connecting part (212) by a hinge and can be supported by an elastic member such as a coil spring. That is, when a user inserts the connecting part (203) into the inner space of the connecting part (212), the connecting projection (212c) is pressed while pressing the elastic member, and when the insertion of the connecting part (203) is completed, the connecting projection (212c) is fitted into the connecting groove (203c) by the restoring force of the elastic member. Thus, the connecting part (203) and the connecting part (212) can be firmly connected.

[0133] When separating, a pusher provided on the outer surface of the coupling part (212) may be used. When the user presses the pusher, the coupling projection (212c) connected thereto is pressed while pressing the elastic member. That is, the coupling projection (212c) is separated from the coupling groove (203c), and the connecting part (203) can be separated from the coupling part (212).

[0134] The connection part (203) may be provided with a first suction pipe (203a) that transmits the suction power generated from the vacuum cleaner body (200) to the cleaning module (210) and serves as a passage for dust sucked in by the cleaning module (210) to move, and a first power connection part (203b) for providing power to the cleaning module (210).

[0135] And the connecting part (212) may be provided with a second suction pipe (212a) through which the suction force of the connecting part (203) is transmitted and which serves as a passage for dust sucked in from the cleaning module (210) to move, and a second power connection part (212b) for receiving power from the first power connection part (203b).

[0136] The first and second power connection portions (203b, 212b) may be provided on one side of the first and second suction tubes (203a, 212a) and may be provided in a shape in which two terminals are connected. For example, the second power connection portion (212b) may be provided so that both terminals protrude, and the first power connection portion (203b) may be provided so that the negative terminal is recessed, so that the second power connection portion (212b) can be inserted.

[0137] That is, as the connecting part (203) and the coupling part (212) are combined, the suction pipe (203a, 212a) and the power connection part (202b, 212b) can be connected simultaneously.

[0138] FIG. 10 is a plan view showing the joint portions of the vacuum cleaner body (200) and the cleaning module (210) according to the second embodiment.

[0139] The connection part (203) may be provided with a first suction pipe (203a) that transmits the suction power generated from the vacuum cleaner body (200) to the cleaning module (210) and serves as a passage for dust sucked in by the cleaning module (210), a first power connection part (203b) for providing power to the cleaning module (210), and a first information connection part (203d) that is connected to the second information connection part (212d) described later to receive information.

[0140] And the connecting part (212) may be provided with a second suction pipe (212a) through which the suction power of the connecting part (203) is transmitted and which serves as a passage for dust sucked in from the cleaning module (210) to move, a second power connection part (212b) for receiving power from the first power connection part (203b), and a second information connection part (212d) for transmitting information of the cleaning module (210) to the main circuit of the vacuum cleaner body (200).

[0141] The first and second power connection portions (203b, 212b) may be provided on one side of the first and second suction tubes (203a, 212a) and may be provided in a shape in which two terminals are connected. For example, the second power connection portion (212b) may be provided so that both terminals protrude, and the first power connection portion (203b) may be provided so that the negative terminal is recessed, so that the second power connection portion (212b) can be inserted.

[0142] In addition, the first and second information connection parts (203d, 212d) may be provided adjacent to the first and second power connection parts (203b, 212b) and may be provided in a shape in which one terminal is connected. For example, the second information connection part (212d) may be provided so that one terminal protrudes, and the first information connection part (203d) may be provided so that a negative terminal is recessed, so that the second power connection part (212d) can be inserted.

[0143] That is, as the connecting part (203) and the coupling part (212) are combined, the suction pipe (203a, 212a), the power connection part (202b, 212b), and the information connection part (202d, 212d) can be connected simultaneously.

[0144] The torque of a motor is proportional to the load current flowing through the rotor. As the motor load increases, the load current increases, and as the torque increases to balance the load, stable operation can be maintained. The relationship between torque and load current can be understood through the torque characteristic curve.

[0145] FIG. 11 is a flowchart illustrating a control method of a charger according to an embodiment of the present specification.

[0146] As illustrated in FIG. 11, a charger according to an embodiment of the present specification can charge a battery attached to / detached from a vacuum cleaner through steps S110 and S130, and a detailed description is as follows. Here, the charger may include at least a part of the vacuum cleaner stand (300) described with reference to FIG. 5. Here, the vacuum cleaner may include at least some components of the vacuum cleaner (100) described with reference to FIG. 1 to FIG. 10.

[0147] First, the charger obtains temperature information from the battery attached to the vacuum cleaner (S110). Here, the temperature information may include information related to the temperature of the battery itself. Here, the temperature of the battery itself may be detected by a sensor (not shown, to be described later) included within the battery. When the sensor included within the battery detects the temperature of the battery itself, a processor (not shown, to be described later) included within the battery may transmit the temperature information to the charger through a communication unit (not shown, to be described later) included within the battery. Here, the communication unit may transmit the temperature information to the charger via wired communication, but is not necessarily limited thereto, and may use any form of communication means for transmitting the temperature information.

[0148] Next, the charger charges the battery attached to the vacuum cleaner based on temperature information (S130). More specifically, the charger can determine whether the battery temperature is measured within a preset first interval based on the battery temperature information, and if the battery temperature is measured within the preset first interval, it can charge the battery by applying a pulse wave of a first period to the battery.

[0149] Here, the preset first interval may mean an interval that is outside the preset charging allowable temperature range of the battery and within the preset discharging allowable temperature range.

[0150] FIG. 12 is a block diagram illustrating a charger and a battery according to an embodiment of the present specification.

[0151] As illustrated in FIG. 12, the battery (1210) may include a first communication unit (1211), a first processor (1212), a temperature sensor (1213), a power storage unit (1214), and / or a switch (1215). The charger (1220) may include a second communication unit (1221), a second processor (1222), and / or a power delivery unit (1223). The charger (1220) may charge the battery (1210) by receiving power from a power supply unit (1230) (in the direction of the dotted line). A detailed description is as follows.

[0152] First, the temperature sensor of the battery can detect the temperature that changes as the power storage unit is discharged / charged. The temperature sensor can transmit the detected temperature to a first processor. The first processor can transmit information related to the temperature transmitted from the temperature sensor to a first communication unit. The first communication unit can transmit the transmitted temperature information to a communication unit via the charger's second wired / wireless communication. Under the control of the first processor, the switch can transmit power supplied from the charger to the power storage unit or cut off power supplied from the charger. For example, if the temperature detected by the temperature sensor is outside the discharge allowable temperature range, the first processor can prevent power from being supplied to the power storage unit by cutting off the switch.

[0153] Next, the second communication unit of the charger can obtain temperature information of the power storage unit from the first communication unit of the battery. The second communication unit can transmit the obtained temperature information to the second processor.

[0154] If the temperature of the battery (or power storage unit) is outside the discharge allowable temperature range, the second processor may cut off the power applied to the battery. If the temperature of the battery is within the charge allowable temperature range, the second processor may apply a phase voltage or phase current to the battery. If the temperature of the battery is outside the charge allowable temperature range and within the discharge allowable temperature range, the second processor may charge the battery by applying a pulse wave with a preset period of 1 second or less to the battery.

[0155] The power delivery unit of the charger can transfer power supplied from a power supply unit (e.g., a power outlet) to the battery under the control of the second processor.

[0156] Figure 13 is a diagram illustrating the battery and charger of Figure 12 from the perspective of signal processing.

[0157] As illustrated in FIG. 13, the battery (1310) may include at least one switch (1315), a power storage unit (1314), and a processor module (1312 / 1313). Here, the processor module may detect the temperature of the power storage unit and transmit the temperature information to a charger (1320).

[0158] The processor module (1322) of the charger can generate / control a pulse waveform based on temperature information transmitted from the battery and transmit the generated pulse waveform to the battery.

[0159] When a pulse waveform is transmitted to the battery, power is stored in the power storage unit (1314).

[0160] FIG. 14 shows a temperature distribution according to an embodiment of the present specification.

[0161] As illustrated in FIG. 14, the allowable charging temperature range may refer to a range between the allowable minimum charging temperature and the allowable maximum charging temperature. That is, the allowable charging temperature range may be determined by an allowable operating temperature parameter (e.g., Minimum / Maximum Operating Temperature Parameter) and / or an allowable surface temperature parameter (e.g., Minimum / Maximum Surface Temperature Parameter). Here, as previously explained, the allowable operating temperature parameter and / or allowable surface temperature parameter may be preset by the user / manufacturer. For example, the allowable operating temperature lower limit or the allowable surface temperature lower limit may be preset to 0 degrees Celsius, and the allowable operating temperature upper limit or the allowable surface temperature upper limit may be preset to 50 degrees Celsius. That is, the range between 0 degrees Celsius and 50 degrees Celsius (1401) may be defined as the allowable charging temperature range.

[0162] The allowable charging temperature range may refer to a temperature range in which the probability of an exothermic reaction exceeding a preset amount occurring in the battery as it charges is above a threshold value. For example, the allowable charging temperature range may refer to a range between 0 degrees Celsius and 50 degrees Celsius. Here, the allowable charging temperature range may be preset by the user or specified in advance by the manufacturer.

[0163] The discharge allowable temperature range may mean a range between the lower discharge temperature limit and the upper discharge temperature limit. For example, the lower discharge allowable temperature limit may be preset to -20 degrees Celsius, and the upper discharge allowable temperature limit may be preset to 80 degrees Celsius. That is, the range between -20 degrees Celsius and 80 degrees Celsius (1402) can be defined as the discharge allowable temperature range.

[0164] The allowable discharge temperature range may refer to a temperature range where the probability of an exothermic reaction exceeding a preset amount occurring in the battery as it discharges is above a threshold value. For example, the allowable discharge temperature range may refer to a range between -20 degrees Celsius and 80 degrees Celsius. Here, the allowable discharge temperature range may be preset by the user or specified in advance by the manufacturer.

[0165] More specifically, the charger may not charge the battery outside the discharge allowable temperature range. The charger may charge the battery within the charging allowable temperature range and may charge the battery by applying a constant voltage or a constant current to the battery.

[0166] According to an embodiment of the present specification, the charger can charge the battery in a preset first section (within the discharge allowable temperature range and outside the charge allowable temperature range), but can charge the battery by applying a pulse wave of a preset period without applying a phase voltage or phase current. This is because when the battery is charged by applying a phase voltage or phase current in the first section, the probability of a heat reaction occurring in the battery where the temperature of the first section is detected is greater than or equal to a threshold value. That is, when a pulse wave of a preset period is applied in the first section instead of a phase voltage or phase current, the voltage of the battery can be charged while the probability of a heat reaction occurring in the battery is less than or equal to a threshold value.

[0167] Here, the period of the pulse wave applied from the charger to the battery may be 1 second or less. This is because applying a pulse wave with a period greater than 1 second to the battery produces the same effect (e.g., a heating reaction) as applying a phase voltage or phase current to the battery. For this reason, the charger can charge the battery in which the temperature of the first section is detected using a pulse wave with a period of 1 second or less.

[0168] Here, the interval between -20 degrees Celsius and 0 degrees Celsius (1403) and the interval between 50 degrees Celsius and 80 degrees Celsius (1404) can be collectively defined as the first preset interval mentioned in FIG. 11.

[0169] Figure 15 is a graph showing the change in temperature over time.

[0170] As illustrated in FIG. 15, for example, when the battery temperature is 0 degrees Celsius at t=0 (min), as the vacuum cleaner operates and the battery discharges, the battery temperature increases proportionally to time as time passes. At this time, the range between 0 degrees Celsius and 50 degrees Celsius can be pre-set as the allowable charging temperature range.

[0171] For example, as the vacuum cleaner operates, the temperature of the battery may reach 80 degrees Celsius at t=60 (minute). According to the prior art, even if a user wants to charge the vacuum cleaner's battery, charging is impossible because the battery temperature exceeds 50 degrees Celsius during the interval between t=60 (minute) and t=90 (minute), thus exceeding the permissible charging temperature range. Therefore, if a user wants to charge the vacuum cleaner's battery, there is the inconvenience of having to wait from t=60 (minute) to t=90 (minute).

[0172] However, according to an embodiment of the present specification, when a vacuum cleaner with a battery attached is connected to a charger at t=60 (min), the charger can charge the battery by applying a pulse wave to the battery during the interval between t=60 (min) and t=90 (min) (an interval within the discharge allowable temperature range and outside the charge allowable temperature range).

[0173] When time elapses and t=90 (minutes) and the temperature of the battery drops to 50 degrees Celsius or lower, the temperature of the battery enters the permissible charging temperature range, and at this time, the charger can charge the battery by applying a phase voltage or phase current to the battery.

[0174] FIG. 16 illustrates one example of a pulse wave according to an embodiment of the present specification.

[0175] As shown in FIG. 16, the charger can apply a pulse wave with T (period) = 1 s to the battery. For example, the peak of the pulse wave can be 1 V. For example, the duration (L) of the pulse wave can be 0.2 s.

[0176] FIG. 17 illustrates another example of a pulse wave according to an embodiment of the present specification.

[0177] As shown in FIG. 17, the charger can apply a pulse wave with T (period) = 0.5s to the battery.

[0178] FIG. 18 illustrates another example of a pulse wave according to an embodiment of the present specification.

[0179] As shown in FIG. 18, the charger can apply a pulse wave with T (period) = 0.25s to the battery.

[0180] FIG. 19 illustrates another example of a pulse wave according to an embodiment of the present specification.

[0181] As shown in FIG. 19, the charger can apply a pulse wave to the battery with a length (L) of 0.5 (s) and a period (T) of 1 s.

[0182] FIG. 20 illustrates another example of a pulse wave according to an embodiment of the present specification.

[0183] As shown in FIG. 20, the charger can apply a pulse wave to the battery with a length (L) of 0.8 (s) and a period (T) of 1 s.

[0184] Various forms of pulse waves have been described with reference to FIGS. 16 to 20, but are not necessarily limited thereto. For example, the second processor of the charger may determine the duty cycle of the pulse wave based on the temperature information of the battery. For example, the second processor of the charger may change the duration and / or period of the pulse wave in real time according to the temperature of the battery.

[0185] Some embodiments or other embodiments of this specification described above are not exclusive or distinct from one another. Some embodiments or other embodiments of this specification described above may be used in combination or combined, each with its own configuration or function.

[0186] For example, this means that configuration A described in a specific embodiment and / or drawing and configuration B described in another embodiment and / or drawing can be combined. That is, even if the combination between configurations is not directly described, it means that combination is possible, except where it is described that combination is impossible.

[0187] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of this specification shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of this specification are included within the scope of this specification.

Claims

Claim 1 A method for controlling a charger of a vacuum cleaner, comprising: a step of obtaining temperature information of the battery from the battery when connected to the battery of the vacuum cleaner; and a step of charging the battery based on the temperature information; wherein the step of charging the battery comprises: performing charging in a continuous charging mode by applying a phase voltage or phase current to the battery when the temperature of the battery is within a charging allowable temperature range; and performing charging in a pulse charging mode by applying a first cycle pulse wave to the battery when the temperature of the battery is within a discharge allowable temperature range and is outside the charging allowable temperature range, wherein the charging allowable temperature range is a temperature range between a charging allowable minimum temperature and a charging allowable maximum temperature that can safely charge the battery, and the discharge allowable temperature range is a temperature range set wider than the charging allowable temperature range and is a temperature range between a discharge allowable minimum temperature and a discharge allowable maximum temperature; and wherein the charger switches from one of the continuous charging mode and the pulse charging mode to the other as the temperature of the battery enters from either the charging allowable temperature range or the discharge allowable temperature range. Claim 2 delete Claim 3 A method according to claim 1, characterized in that the first period is 1 second or less. Claim 4 A method characterized by including the step of changing the first cycle based on the temperature information in paragraph 3. Claim 5 A method according to claim 4, characterized by including a step of changing the duration of the pulse wave based on the temperature information. Claim 6 A charger for charging a battery of a vacuum cleaner comprises: a communication unit for acquiring temperature information of the battery from an external battery; and a processor for applying power to the battery based on the temperature information transmitted from the communication unit; wherein the processor performs charging in a continuous charging mode by applying a phase voltage or phase current to the battery when the temperature of the battery is within a charging allowable temperature range, and performs charging in a pulse charging mode by applying a first cycle pulse wave to the battery when the temperature of the battery is within a discharge allowable temperature range and is outside the charging allowable temperature range; wherein the charging allowable temperature range is a temperature range between a charging allowable minimum temperature and a charging allowable maximum temperature that can safely charge the battery, and the discharge allowable temperature range is a temperature range set wider than the charging allowable temperature range and is a temperature range between a discharge allowable minimum temperature and a discharge allowable maximum temperature; and wherein the processor is configured to switch from one of the continuous charging mode and the pulse charging mode to the other as the temperature of the battery enters from either the charging allowable temperature range or the discharge allowable temperature range. Claim 7 delete Claim 8 A charger according to claim 6, wherein the processor determines the first cycle in a time of 1 second or less. Claim 9 A charger according to claim 8, wherein the processor changes the first cycle based on the temperature information. Claim 10 A charger according to claim 9, wherein the processor changes the duration of the pulse wave based on the temperature information.

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