Cleaner, charging dock, and cleaner charging system comprising cleaner and charging dock

Abstract

In a cleaner, a charging dock, and a cleaner charging system comprising the cleaner and the charging dock, according to one embodiment of the present disclosure, the cleaner includes a cleaner in which a battery that is charged by receiving a power supply from the charging dock is mounted, and which is provided with a charging voltage detection unit for detecting a charging voltage from the charging dock, wherein a resistor having a resistance value of 2k ohms or greater may be connected to the charging voltage detection unit.

Description

A vacuum cleaner, a charging dock, and a vacuum cleaner charging system comprising these.

[0001] The present disclosure relates to a vacuum cleaner, a charging stand, and a vacuum cleaner charging system comprising the same. More specifically, the present disclosure relates to a cordless vacuum cleaner, a charging stand on which the cordless vacuum cleaner is mounted or detached for charging, and a vacuum cleaner charging system comprising the same.

[0002] Recently, the number of users switching from corded vacuums to cordless vacuums has increased rapidly due to reasons such as ease of use. Cordless vacuums have a built-in battery, and a charging dock is an essential accessory.

[0003] A cordless vacuum cleaner requires a circuit structure and algorithm to sense whether it is attached or detached. This circuit structure is equipped with a load resistor and can detect whether it is attached by utilizing the change in voltage across the load resistor depending on whether it is attached or detached.

[0004] In cordless vacuum cleaners with this circuit structure, reverse current leakage from the battery may occur when the unit is detached. Furthermore, since the leakage current running across the load resistor can lead to a false detection of the unit being attached, a load resistor with a low resistance value is used. In other words, a load resistor with a low resistance value is used to facilitate easy detachment detection.

[0005] However, since the load resistance has a low resistance value, unnecessary leakage power occurs when the cordless vacuum cleaner is mounted on the charging dock and charging. Specifically, a load resistance with a low resistance value consumes high current, resulting in high leakage power and heat generation. In other words, conventional cordless vacuum cleaners have a problem where battery charging efficiency is reduced due to the load resistance with a low resistance value.

[0006] The present disclosure aims to resolve the aforementioned problem.

[0007] The present disclosure aims to provide a vacuum cleaner, a charging stand, and a vacuum cleaner charging system comprising the same, wherein the circuit for detecting mounting and detachment is designed to have a load resistance of a high resistance value.

[0008] A vacuum cleaner charging system according to an embodiment of the present disclosure includes a charging stand and a vacuum cleaner equipped with a battery that is charged by receiving power from the charging stand and having a charging voltage sensing unit for detecting a charging voltage from the charging stand, wherein a resistor having a resistance value of 2k ohms or more may be connected to the charging voltage sensing unit.

[0009] A power supply line is formed in the vacuum cleaner to supply power from the charging dock to the battery, and a charging switch may be installed on the power supply line.

[0010] The charging switch can be an ideal diode.

[0011] Two or more resistors are connected to the power supply line, and the charging voltage detection unit can detect the voltage distributed by two or more resistors as the charging voltage.

[0012] The vacuum cleaner operates in charging mode when the charging voltage is above a preset threshold, and can operate in discharging mode when the charging voltage is below the threshold.

[0013] The charging station includes a mounting detection unit that detects a voltage to determine whether a vacuum cleaner is mounted, and if the detected voltage of the mounting detection unit is less than or equal to a preset value, it is determined that the vacuum cleaner is mounted, and if the detected voltage of the mounting detection unit exceeds the preset value, it is determined that the vacuum cleaner is not mounted.

[0014] The charging stand may further include a charging switch that turns on or off based on the detection voltage of the mounted detection unit.

[0015] The charging stand further includes a charging voltage provider that supplies power to the vacuum cleaner, and the charging voltage provider can be connected to a charging switch.

[0016] According to an embodiment of the present disclosure, as the load resistance for mounting and detachment detection has a high resistance value, leakage power due to leakage current is minimized, thereby providing the advantage of improved battery charging efficiency.

[0017] According to an embodiment of the present disclosure, as the resistance value of the load resistor for detecting mounting and detachment is designed to be high, it is possible to simplify the circuit structure of the charging stand and minimize the number of components, thereby providing the advantage of reducing manufacturing costs.

[0018] Figure 1 is a circuit diagram for explaining the operation of a charging stand according to the mounting and detachment of a conventional vacuum cleaner.

[0019] Figure 2 is a flowchart illustrating the operation of the charging stand according to the mounting and detachment of a conventional vacuum cleaner.

[0020] Figure 3 is a flowchart for explaining the operation of a vacuum cleaner according to the mounting and detachment of a conventional vacuum cleaner.

[0021] Figure 4 is a diagram illustrating a method for a conventional vacuum cleaner to determine its current state.

[0022] FIG. 5 is a circuit diagram for explaining the operation of a charging stand according to the mounting and detachment of a vacuum cleaner according to an embodiment of the present disclosure.

[0023] FIG. 6 is a flowchart for explaining the operation of a charging stand according to the mounting and detachment of a vacuum cleaner according to an embodiment of the present disclosure.

[0024] FIG. 7 is a flowchart for explaining the operation of a vacuum cleaner according to the mounting and detachment of the vacuum cleaner according to an embodiment of the present disclosure.

[0025] FIG. 8 is a drawing for explaining a method for a vacuum cleaner to determine its current state according to an embodiment of the present disclosure.

[0026] Preferred embodiments of the present disclosure will be described in detail below with reference to the attached drawings.

[0027] The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present disclosure to specific embodiments, and should be interpreted to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure.

[0028] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. Singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and, unless explicitly defined in this disclosure, may not be interpreted in an ideal or overly formal sense.

[0030] FIG. 1 is a circuit diagram for explaining the operation of a charging stand according to the mounting and detachment of a conventional vacuum cleaner, FIG. 2 is a flowchart for explaining the operation of a charging stand according to the mounting and detachment of a conventional vacuum cleaner, FIG. 3 is a flowchart for explaining the operation of a vacuum cleaner according to the mounting and detachment of a conventional vacuum cleaner, and FIG. 4 is a diagram for explaining a method of determining the current state of a conventional vacuum cleaner.

[0031] Referring to FIG. 1, conventionally, when the vacuum cleaner (200) is detached from the charging stand (100), the charging stand (100) outputs a voltage of 5V, and at this time, a voltage of 0V is detected by the mounting detection unit (130), and when the vacuum cleaner (200) is mounted on the charging stand (100), current flows through the load resistance (1.2kΩ) of the vacuum cleaner (200), and accordingly, a voltage of 5V is detected by the mounting detection unit (130).

[0032] Specifically, with reference to FIG. 2, the charging stand (100) can be controlled so that the charging switch (110) is off and the control signal generating unit (120) generates an ON signal (S10).

[0033] The charging stand (100) can obtain the detection voltage of the mounting detection unit (130) (S20).

[0034] That is, the charging stand (100) can monitor the voltage detected by the mounting detection unit (130) while the charging switch (110) is off and the control signal generating unit (120) is generating an ON signal.

[0035] As described in FIG. 1, when the vacuum cleaner (200) is not mounted on the charging stand (100), a voltage of 0V is applied to the mounting detection unit (130), and when the vacuum cleaner (200) is mounted on the charging stand (100), a voltage of 5V can be applied to the mounting detection unit (130).

[0036] The mounting sensor (130) may be in a low state when a voltage of 0V is applied, and in a high state when a voltage of 5V is applied.

[0037] When the mounting detection unit (130) is in a low state, the charging switch (110) can be continuously controlled to be off and the control signal generation unit (120) can be controlled to generate an on signal.

[0038] When the mounting detection unit (130) is in a high state, the charging switch (110) can be controlled to turn on and the control signal generating unit (120) can be controlled to generate an off signal (S30).

[0039] As the charging switch (110) is turned on, the charging voltage supply unit (140) can provide voltage to the vacuum cleaner (200). That is, the voltage supplied from the charging voltage supply unit (140) can be supplied to the vacuum cleaner (200).

[0040] The vacuum cleaner (200), in particular, the battery can be charged by receiving voltage from the charging voltage supply unit (140).

[0041] The charging stand (100) can detect charging voltage and charging current when the charging switch (110) is on or when the control signal generating unit (120) generates an off signal (S40).

[0042] That is, the charging station (100) can monitor the charging status when the charging switch (110) is on or when the control signal generating unit (120) generates an off signal.

[0043] And, here, the charging voltage is a voltage detected by the charging voltage detection unit (170) of the charging unit (100), and the charging current may be a current detected by the charging current detection unit (150).

[0044] The charging unit (100) can determine whether the charging voltage is greater than or equal to a reference voltage value and whether the charging current is less than or equal to a reference current value (S50).

[0045] Step S50 may be a step of detecting the detachment of the vacuum cleaner (200). The detachment detection condition may include a first condition in which the charging voltage is greater than or equal to a reference voltage value and a second condition in which the charging current is less than or equal to a reference current value.

[0046] If the charging stand (100) satisfies both the first condition and the second condition, it can determine that the vacuum cleaner (200) has been detached from the charging stand (100).

[0047] If the charging stand (100) does not satisfy either the first condition or the second condition, it can be determined that the vacuum cleaner (200) is mounted on the charging stand (100).

[0048] When the charging stand (100) determines that the vacuum cleaner (200) has been detached, the charging switch (110) can be controlled to turn off again, and the control signal generating unit (120) can be controlled to generate an ON signal.

[0049] Referring to FIG. 3, the charging / discharging operation of a conventional vacuum cleaner (200) is explained.

[0050] The vacuum cleaner (200) can determine whether the charging voltage is above a threshold value (S110).

[0051] Here, the charging voltage may be a voltage detected by the charging voltage detection unit (210) of the vacuum cleaner (200). The charging voltage may be a voltage distributed by a distribution resistor from the voltage supplied from the charging stand (100). That is, when the vacuum cleaner (200) is mounted on the charging stand (100), it may be a voltage provided and distributed by the charging voltage supply unit (140).

[0052] The threshold value can be set arbitrarily. When the vacuum cleaner (200) is detached, voltage is not supplied from the charging stand (100), but it can be set to a value of 0±α considering noise, etc. For example, the threshold value may be 0.3V, but since this is merely an example, it is reasonable not to be limited thereto.

[0053] The vacuum cleaner (200) can detect that it is mounted when the charging voltage is above a threshold value and can operate in charging mode (S120).

[0054] For example, the vacuum cleaner (200) may display a mounting notification when the charging voltage is above a threshold value. The battery of the vacuum cleaner (200) can be charged through the voltage supplied from the charging voltage provider (140).

[0055] The vacuum cleaner (200) can detect detachment when the charging voltage is below a threshold value and operate in discharge mode (S130).

[0056] When the vacuum cleaner (200) detects detachment, it can continue to monitor whether the charging voltage is above a threshold value. And, the charging voltage of the battery can be discharged.

[0057] FIG. 4 shows the criteria for determining the state of a conventional vacuum cleaner. In FIG. 4, the battery criterion represents the voltage supplied from the charging station (100) to the vacuum cleaner (200). The 5V criterion represents the voltage distributed by the distribution resistor. That is, the 5V criterion represents the voltage supplied from the charging station (100) to the vacuum cleaner (200) and distributed by the distribution resistor.

[0058] Accordingly, the vacuum cleaner (200) can determine its current state based on the voltage detected by the charging voltage detection unit (210). The vacuum cleaner (200) can determine that it is in a detached state if the voltage detected by the charging voltage detection unit (210) is less than 0.3V, and in an attached state if it is 0.3V or higher. Additionally, when the voltage detected by the charging voltage detection unit (210) is 0.3V or higher, the vacuum cleaner (200) can determine that it is in a charged state if the voltage detected by the charging voltage detection unit (210) is 3.5V or higher and less than 4.9V.

[0059] As described above, a conventional vacuum cleaner (200) is equipped with a load resistor and can detect whether it is attached to or detached from the charging stand (100) by detecting the voltage distributed through the load resistor. However, when the vacuum cleaner (200) is detached from the charging stand (100), a reverse current may be generated from the battery. If the voltage across the load resistor is high due to this reverse current, the charging voltage detection unit (210) may misdetect that the vacuum cleaner (200) is attached to the charging stand (100). To resolve this problem of misdetection, the conventional vacuum cleaner uses a load resistor having a relatively low resistance value, such as 1 kΩ or 200 Ω.

[0060] In this case, although the problem of false detection is improved, the vacuum cleaner (200) has the disadvantage of increasing leakage power when charged after installation due to the low resistance value. For example, if the charging voltage is 29.4V, leakage power of approximately 0.72W is generated (29.4V^2 / 1.2k). Since this leakage power is continuously generated during the charging time, the battery charging efficiency decreases. In addition, the load resistor is connected in parallel with the high battery charging voltage, and due to the generation of leakage current, the load resistor has a high power resistance, which generates a large amount of heat, resulting in a disadvantage of reduced price competitiveness.

[0061] The present disclosure aims to provide a vacuum cleaner and a charging stand capable of detecting mounting and detachment even when the load resistance has a high resistance value, and a method of operating the same.

[0062] A vacuum cleaner charging system according to an embodiment of the present disclosure may include a charging stand and a vacuum cleaner.

[0063] FIG. 5 is a circuit diagram for explaining the operation of a charging stand according to the mounting and detachment of a vacuum cleaner according to an embodiment of the present disclosure.

[0064] Referring to FIG. 5, a charging stand (1100) according to an embodiment of the present disclosure may include a charging switch (1110), a control signal generating unit (1120), a mounting detection unit (1130), a charging voltage providing unit (1140), a charging voltage detection unit (1170), and at least one resistor and a diode.

[0065] In addition, the vacuum cleaner (1200) according to an embodiment of the present disclosure may include a charging voltage sensing unit (1210), a charging switch (1220), and at least one resistor.

[0066] Meanwhile, the configurations illustrated in FIG. 5 are shown as necessary for explaining the present disclosure, and other configurations may be included in addition to those illustrated. Also, at least some of the configurations illustrated in FIG. 5 may be omitted.

[0067] A charging switch (1110) can be connected between a charging voltage provider (1140) and a charging line (L1). The charging switch (1110) can be turned on or off. The charging switch (1110) can be turned on or off based on the detected voltage of a mounted detection unit (1130). When the charging switch (1110) is off, power from the charging voltage provider (1140) to the charging line (L1) can be cut off. When the charging switch (1110) is on, power can be supplied from the charging voltage provider (1140) to the charging line (L1).

[0068] The charging voltage providing unit (1140) can supply power to the vacuum cleaner (1200), and the charging voltage providing unit (1140) can be connected to the charging switch (1110).

[0069] The control signal generating unit (1120) can generate a control signal to detect whether the vacuum cleaner (1200) is mounted. For example, the control signal generating unit (1120) can generate and output a 5V control signal.

[0070] A first resistor (R1) may be connected between the control signal generating unit (1120) and the first diode (D1). One end of the second resistor (R2) may be connected between the first resistor (R1) and the first diode (D1), and the other end may be connected to the mounting detection unit (1130).

[0071] The first diode (D1) can be connected to the charging line (L1).

[0072] A third resistor (R3) is connected to the charging line (L1), and a fourth resistor (R4) can be connected to the third resistor (R3). A charging voltage sensing unit (1170) can be connected between the third resistor (R3) and the fourth resistor (R4).

[0073] The vacuum cleaner (1200) can be connected to a charging line (L1). When the vacuum cleaner (1200) is mounted on a charging stand (1100), the power supply line (L2) of the vacuum cleaner (1200) can be connected to the charging line (L1) of the charging stand (1100). That is, a power supply line (L2) for supplying power from the charging stand (1100) to the battery can be formed on the vacuum cleaner (1200). A charging switch (1110) can be installed on the power supply line (L2).

[0074] The power supplied from the charging voltage providing unit (1140) and passing through the charging switch (1110) to the charging line (L1) can be passed through the power supply line (L2) to charge the battery of the vacuum cleaner (1200).

[0075] A charging switch (1220) may be installed on the power supply line (L2). The charging switch (1220) may be an ideal diode. An ideal diode is a diode in which the forward voltage is zero and current flows in one direction. If an ideal diode is provided, the occurrence of reverse current can be prevented, and accordingly, a load resistor with a high resistance value can be provided.

[0076] In this way, the resistance value of the resistor connected to the charging voltage sensing unit (1210) composed of an ideal diode on the power supply line (L2) can be designed to be 2k ohms or more.

[0077] Two or more resistors are connected to the power supply line (L2), and the charging voltage detection unit (1210) can detect the divided voltage by the two or more resistors as the charging voltage. For example, a fifth resistor (R5) and a sixth resistor (R6) are connected to the power supply line (L2), and the charging voltage detection unit (1210) can detect the divided voltage by the fifth resistor (R5) and the sixth resistor (R6) as the charging voltage.

[0078] The fifth resistor (R5) and the sixth resistor (R6) may be load resistors for detecting the mounting and detachment of the vacuum cleaner (1200). A charging voltage detection unit (1210) may be connected between the fifth resistor (R5) and the sixth resistor (R6). That is, a resistor, namely the fifth resistor (R5) and the sixth resistor (R6), is connected to the charging voltage detection unit (1210) for detecting the charging voltage from the charging stand (1100), and each may have a resistance value of 2k ohms or more. That is, the resistance values ​​of the fifth resistor (R5) and the sixth resistor (R6) of the vacuum cleaner (1200) may be greater than the load resistance value of the conventional vacuum cleaner (200).

[0079] In the charging voltage detection unit (1210) for detecting the charging voltage from the charging unit (1100), if the resistance is at least 2k ohms, the effect of reducing leakage power compared to the conventional method can be confirmed. For example, the fifth resistor (R5) may have a resistance value of 20k ohms, and the sixth resistor (R6) may have a resistance value of 4.02k ohms. In this case, if the charging voltage is 29.4V, leakage power of approximately 0.03W is generated (29.4V^2 / 24.02k). That is, it can be confirmed that there is an advantage of significantly reducing leakage power compared to the conventional method.

[0080] As described above, if a resistor with a resistance value of 2k ohms or more is connected to the charging voltage sensing unit (1210), there is an advantage in that leakage power can be effectively reduced.

[0081] FIG. 6 is a flowchart for explaining the operation of a charging stand according to the mounting and detachment of a vacuum cleaner according to an embodiment of the present disclosure.

[0082] The charging stand (1100) has the charging switch (1110) off, and the control signal generating unit (1120) can output an ON signal (S1110).

[0083] The charging stand (1100) can be controlled so that the control signal generating unit (1120) outputs an ON signal while the charging switch (1110) is off.

[0084] The control signal generating unit (1120) can output an ON signal, i.e., a 5V signal.

[0085] The charging stand (1100) can determine whether the detection voltage of the mounting detection unit (1130) is less than or equal to a predetermined value (S1120).

[0086] That is, the charging unit (1100) can determine whether the detection voltage of the mounting detection unit (1130) is below a predetermined value.

[0087] If the vacuum cleaner (1200) is not mounted on the charging stand (1100), the 5V signal generated by the control signal generation unit (1120) can be detected as is by the mounting detection unit (1130).

[0088] That is, when the mounting detection unit (1130) detects a 5V signal, it can determine that the vacuum cleaner (1200) is not detected on the charging stand (1100).

[0089] When the vacuum cleaner (1200) is mounted on the charging stand (1100), a 5V signal generated by the control signal generation unit (1120) flows to the load resistor of the vacuum cleaner (200), and the voltage detected by the mounting detection unit (1130) may be reduced. For example, when the first resistor (R1) is 27kΩ, the second resistor (R2) is 47kΩ, the fifth resistor (R5) is 20kΩ, and the sixth resistor (R6) is 4kΩ, the voltage detected by the mounting detection unit (1130) may be 3.5V or less.

[0090] In the present disclosure, the equivalent resistance of the load resistors (R5, R6) may be about 24 kΩ. However, this is merely an example. In the present disclosure, the equivalent resistance of the load resistors (R5, R6) may be 2 kΩ or more.

[0091] The specified value may be 3.5V, but since this is merely an example, it is reasonable not to limit it to this.

[0092] The charging stand (1100) can determine that the vacuum cleaner (1200) is not mounted if the detection voltage of the mounting detection unit (1130) exceeds a predetermined value, and determine that the vacuum cleaner (1200) is mounted if the detection voltage of the mounting detection unit (1130) is less than or equal to a predetermined value.

[0093] When the detection voltage of the mounting detection unit (1130) is greater than a predetermined value, the charging switch (1110) can be continuously turned off and the control signal generating unit (1120) can be controlled to output an ON signal.

[0094] When the detection voltage of the mounting detection unit (1130) of the charging stand (1100) is less than or equal to a predetermined value, the charging switch (1110) is controlled to be ON, and the control signal generating unit (1120) can be controlled to output an OFF signal (S1130).

[0095] As the charging switch (1110) is turned on, the charging voltage supply unit (1140) can provide voltage to the vacuum cleaner (1200). That is, the voltage supplied from the charging voltage supply unit (1140) can be supplied to the vacuum cleaner (1200).

[0096] The vacuum cleaner (1200) can be charged by receiving voltage from the charging voltage supply unit (140). That is, the battery of the vacuum cleaner (1200) can be charged by receiving voltage from the charging voltage supply unit (140) through the charging line (L1).

[0097] And, the control signal generation unit (1120) can generate and output an off signal, i.e., a 0V signal.

[0098] The charging stand (1100) can detect charging voltage and charging current (S1140).

[0099] Here, the charging voltage is the voltage detected by the charging voltage detection unit (1170) of the charging unit (1100), and the charging current may be the current flowing through the charging line (L1).

[0100] The charging unit (1100) can determine whether the charging voltage is greater than or equal to the reference voltage value and whether the charging current is less than or equal to the reference current value (S1150).

[0101] Step S50 may be a detachment detection step or a full charge determination step of the vacuum cleaner (200).

[0102] The charging stand (1100) can determine that the battery is fully charged or the vacuum cleaner (1200) is detached if the charging voltage is greater than or equal to the reference voltage value and the charging current is less than or equal to the reference current value. Accordingly, the charging stand (1100) can turn the charging switch (1110) off again, and the control signal generating unit (1120) can output an ON signal (S1110).

[0103] When the charging voltage of the charging unit (1100) is less than the reference voltage value or the charging current exceeds the reference current value, the charging switch (1110) is controlled to remain ON in the charging state, and the control signal generating unit (1120) can be controlled to output an OFF signal (S1130).

[0104] FIG. 7 is a flowchart for explaining the operation of a vacuum cleaner according to the mounting and detachment of the vacuum cleaner according to an embodiment of the present disclosure, and FIG. 8 is a drawing for explaining a method for determining the current state of a vacuum cleaner according to an embodiment of the present disclosure.

[0105] Referring to FIG. 7, the charging / discharging operation of a vacuum cleaner (1200) according to an embodiment of the present disclosure will be explained.

[0106] The vacuum cleaner (1200) can determine whether the charging voltage is above a threshold value (S1210).

[0107] Here, the charging voltage may be a voltage detected by the charging voltage detection unit (1210) of the vacuum cleaner (1200). The charging voltage may be a voltage distributed by a distribution resistor from the voltage supplied from the charging stand (1100). That is, when the vacuum cleaner (1200) is mounted on the charging stand (1100), the charging voltage may be a voltage provided and distributed by the charging voltage supply unit (1140).

[0108] The threshold value can be set arbitrarily. When the vacuum cleaner (1200) is detached, voltage is not supplied from the charging stand (1100), but it can be set to a value of 0±α considering noise, etc. For example, the threshold value may be 0.6V, but since this is merely an example, it is reasonable not to be limited thereto.

[0109] Meanwhile, conventionally, reverse current from the battery may occur, so the threshold value was set low to prevent false detection caused by this. However, according to the present disclosure, since the charging switch (1220) is an ideal diode, the reverse current is blocked, so the threshold value can be set higher than conventionally. When the threshold value is set higher, detachment can be detected immediately even if the charging voltage drops only slightly compared to when the threshold value is set lower, thus providing the advantage of a faster response speed for detecting detachment.

[0110] The vacuum cleaner (1200) can detect that it is mounted when the charging voltage is above a threshold value and can operate in charging mode (S1220).

[0111] For example, the vacuum cleaner (1200) may display a mounting notification if the charging voltage is above a threshold value. The battery of the vacuum cleaner (1200) can be charged through a voltage supplied from the charging voltage provider (1140).

[0112] The vacuum cleaner (1200) can detect detachment when the charging voltage is below a threshold value and operate in discharge mode (S1230).

[0113] When the vacuum cleaner (1200) detects detachment, it can continue to monitor whether the charging voltage is above a threshold value. And, the charging voltage of the battery can be discharged.

[0114] FIG. 8 illustrates a standard for determining the state of a vacuum cleaner according to an embodiment of the present disclosure. In FIG. 8, the battery standard represents the voltage supplied from the charging station (1100) to the vacuum cleaner (1200). The 5V standard represents the voltage distributed by the distribution resistor. That is, the 5V standard represents the voltage supplied from the charging station (1100) to the vacuum cleaner (1200) and distributed by the distribution resistor.

[0115] Accordingly, the vacuum cleaner (1200) can determine its current state based on the voltage detected by the charging voltage detection unit (1210). The vacuum cleaner (1200) can determine that it is in a detached state if the voltage detected by the charging voltage detection unit (1210) is less than 0.6V, and in an attached state if it is 0.6V or higher. Also, when the voltage detected by the charging voltage detection unit (210) is 0.6V or higher, the vacuum cleaner (200) can determine that it is in a charged state if the voltage detected by the charging voltage detection unit (210) is 3.5V or higher and less than 4.9V.

[0116] As described above, the vacuum cleaner (1200) according to the embodiment of the present disclosure is equipped with a load resistor with a large resistance value, which has the advantage of reducing leakage power. For example, if the charging voltage is 29.4V, leakage power of approximately 0.03W is generated (29.4V^2 / 24k). Since the conventional leakage power was calculated to be 0.72W, it can be confirmed that there is an effect of reducing leakage power.

[0117] The present disclosure can be applied not only to vacuum cleaners but also to various electronic devices including batteries.

[0118] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0119] Accordingly, the embodiments disclosed in this invention are intended to explain, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments.

[0120] The scope of protection of the present invention shall be interpreted by the claims below, and all technical ideas within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. Charging station; and A vacuum cleaner equipped with a battery that is charged by receiving power from the charging stand, and having a charging voltage detection unit for detecting the charging voltage from the charging stand. A resistor with a resistance value of 2k ohms or more is connected to the above charging voltage sensing unit. Vacuum cleaner charging system.

2. In Claim 1, The above vacuum cleaner has a power supply line formed therein to supply power from the charging dock to the battery, and A charging switch is installed on the above power supply line. Vacuum cleaner charging system.

3. In Claim 2, The above charging switch is an ideal diode Vacuum cleaner charging system.

4. In Claim 1, Two or more of the above resistors are connected to the above power supply line, and The charging voltage sensing unit detects the divided voltage by the two or more resistors as the charging voltage. Vacuum cleaner charging system.

5. In Claim 1, The above vacuum cleaner If the above charging voltage is greater than or equal to a preset threshold, it operates in charging mode, and If the above charging voltage is below the above threshold value, it operates in discharge mode. Vacuum cleaner charging system.

6. In Claim 1, The above charging stand A mounting detection unit for detecting voltage to determine whether the above-mentioned vacuum cleaner is mounted Vacuum cleaner charging system.

7. In Claim 6, The above charging stand If the detection voltage of the above-mentioned mounting detection unit is less than or equal to a preset value, it is determined that the above-mentioned vacuum cleaner is mounted, and If the detection voltage of the above-mentioned mounting detection unit exceeds the above-mentioned predetermined value, it is determined that the above-mentioned vacuum cleaner is not mounted. Vacuum cleaner charging system.

8. In Claim 6, The above charging stand A charging switch further comprising being turned on or off based on the detection voltage of the above-mentioned mounting detection unit Vacuum cleaner charging system.

9. In Claim 8, The above charging stand Further including a charging voltage providing unit that supplies power to the above-mentioned vacuum cleaner Vacuum cleaner charging system.

10. In Claim 9, The above charging voltage providing unit is connected to the charging switch Vacuum cleaner charging system.

11. A battery that is charged by receiving power from a charging dock; and It includes a charging voltage sensing unit for detecting the charging voltage from the charging stand, and A resistor with a resistance value of 2k ohms or more is connected to the above charging voltage sensing unit. vacuum cleaner.

12. In Claim 11, It further includes a power supply line for supplying power from the charging stand to the battery, A charging switch is installed on the above power supply line. vacuum cleaner.

13. In Claim 12, The above charging switch is an ideal diode vacuum cleaner.

14. In Claim 12, Two or more of the above resistors are connected to the above power supply line, and The charging voltage sensing unit detects the divided voltage by the two or more resistors as the charging voltage. vacuum cleaner.

15. In Claim 12, If the above charging voltage is greater than or equal to a preset threshold, it operates in charging mode, and If the above charging voltage is below the above threshold value, it operates in discharge mode. vacuum cleaner.

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