A method of powering a surface cleaning device

Abstract

The application discloses a power supply method of a surface cleaning device, including a cleaning module, a rechargeable battery pack and a power supply circuit. The surface cleaning device includes a cleaning mode and a self-cleaning mode. During the cleaning mode, the rechargeable battery pack drives the cleaning module to clean a surface to be cleaned. In the self-cleaning mode, the residual capacity Q of the rechargeable battery pack is obtained, and according to the relationship between the capacity of the rechargeable battery pack and a preset capacity, the cleaning module is driven to self-clean by the rechargeable battery pack and / or the power supply circuit. The technical problem solved by the application is to provide a power supply method of a surface cleaning device, the surface cleaning device selects different self-cleaning power supply modes and self-cleaning modes according to the capacity of the rechargeable battery pack to ensure the self-cleaning efficiency and avoid excessive charging and discharging of the rechargeable battery pack to damage the service life of the battery.

Description

Technical Field

[0001] This invention relates to the field of household cleaning appliances, and more particularly to a power supply method for a surface cleaning device. Background Technology

[0002] Surface cleaning devices are common household cleaning appliances used in daily life to clean surfaces. Besides being easy to operate and providing thorough cleaning, surface cleaning devices typically feature rechargeable batteries and automatically cleaning roller brushes. They usually come with a base for charging, and the base also houses the roller brush for self-cleaning, eliminating the need for manual brush washing after use.

[0003] However, in existing technologies, surface cleaning devices cannot perform charging and self-cleaning simultaneously. This results in the device having very little power remaining after cleaning the surface, insufficient to support self-cleaning. Since charging is typically time-consuming, if the roller brush isn't cleaned immediately after use, prolonged exposure to dirt can cause it to adhere more firmly, making it difficult to clean and resulting in incomplete cleaning. Furthermore, if the user forgets to activate self-cleaning after charging, the roller brush may develop an odor the next time the device is used, severely impacting the user experience. Performing self-cleaning while charging would cause the circuitry to overheat, increasing electrical hazards and potentially shortening the lifespan of the rechargeable battery pack. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a power supply method for a surface cleaning device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A power supply method for a surface cleaning device, the surface cleaning device comprising a cleaning module, a rechargeable battery pack, and a power supply circuit, wherein the rechargeable battery pack is electrically connected to both the cleaning module and the power supply circuit, and the power supply circuit is connected to an external power source to charge the rechargeable battery pack, characterized in that...

[0007] The surface cleaning device also includes a cleaning mode and a self-cleaning mode;

[0008] During the cleaning mode, the rechargeable battery pack drives the cleaning module to clean the surface to be cleaned;

[0009] In the self-cleaning mode, the remaining power Q of the rechargeable battery pack is obtained, and the self-cleaning of the cleaning module is selected to be driven by the rechargeable battery pack and / or the power supply circuit based on the relationship between the power of the rechargeable battery pack and the preset power.

[0010] Furthermore, when the rechargeable battery pack's charge level falls below a first charge level, the power supply circuit drives the cleaning module to self-clean.

[0011] Furthermore, when the rechargeable battery pack has a charge level higher than a first charge level but lower than a second charge level, the rechargeable battery pack and the power supply circuit work together to drive the cleaning module to self-clean.

[0012] Furthermore, when the rechargeable battery pack's charge level is higher than the second charge level, the rechargeable battery pack drives the cleaning module to self-clean.

[0013] Furthermore, during the self-cleaning mode, the power supply circuit selectively charges the rechargeable battery, including:

[0014] Step S011: Obtain the remaining power Q of the rechargeable battery pack;

[0015] Step S012: When the rechargeable battery pack's charge is less than the first charge value, the power supply circuit charges the rechargeable battery pack;

[0016] Step S013: Stop charging the rechargeable battery pack when the rechargeable battery pack power is greater than the first power value.

[0017] Furthermore, the self-cleaning mode of the surface cleaning device includes a low-power mode and a high-power mode.

[0018] Furthermore, when the remaining power of the rechargeable battery pack is lower than the first power value, the self-cleaning mode of the surface cleaning device is a low-power mode.

[0019] Furthermore, when the remaining power of the rechargeable battery pack is higher than the first power value, the surface cleaning device can select either a high-power mode or a low-power mode for self-cleaning.

[0020] Furthermore, after the self-cleaning process is completed, the power supply circuit charges the rechargeable battery pack. When the power of the surface cleaning device reaches the buffer value, the charging speed is slowed down to protect the rechargeable battery pack.

[0021] Furthermore, when the rechargeable battery pack is fully charged, the power supply circuit automatically disconnects from the rechargeable battery pack, stopping charging.

[0022] Those skilled in the art will understand that the control method of the surface cleaning system described above in this application has at least the following beneficial effects:

[0023] 1. The power supply circuit and the rechargeable battery pack can supply power to some or all of the electrical components of the cleaning module individually or in combination to enable the surface cleaning device to perform self-cleaning. The power supply method is selected according to the power value of the rechargeable battery pack.

[0024] Specifically, when the rechargeable battery pack's charge level drops below a certain threshold, the power supply circuit supplies power to the cleaning module for self-cleaning. This avoids the situation where the self-cleaning process is still driven by the rechargeable battery pack when its charge level is low, which would result in poor cleaning performance due to the low voltage supplied by the battery pack. It also prevents the surface cleaning device from being interrupted during self-cleaning due to insufficient power, which would prevent the uncleaned roller brush from continuing to clean for extended periods, shortening its lifespan and potentially causing mold or foul odors.

[0025] When the rechargeable battery pack's charge level is higher than a first value but lower than a second value, the rechargeable battery pack supplies power to at least one electrical component in the cleaning module, while the power supply circuit supplies power to the remaining electrical components in the cleaning module. This reduces the load on the rechargeable battery pack when its charge level is low, preventing poor cleaning performance due to low voltage supplied by the battery pack. Simultaneously, within the allowable range of the battery pack's charge level, it reduces the load on the power supply circuit, lowering costs and ensuring electrical safety.

[0026] When the rechargeable battery pack has a charge level higher than the second charge level, it supplies power to the cleaning module, driving the cleaning module to self-clean, thereby ensuring the normal use of the rechargeable battery pack and the cleaning effect of the surface cleaning device.

[0027] 2. During the self-cleaning mode, the power supply circuit selectively charges the rechargeable battery pack, ensuring it remains charged even after the surface cleaning device completes its self-cleaning process. This reduces the user's charging wait time, eliminating the need to wait for the self-cleaning process to finish before charging, thus facilitating subsequent cleaning. Furthermore, replenishing the rechargeable battery pack during self-cleaning prevents interruptions due to insufficient battery power, which could otherwise shorten the lifespan of uncleaned brushes.

[0028] 3. During the self-cleaning mode, the power supply circuit does not continuously charge the rechargeable battery pack. Instead, it selectively supplies power based on the battery pack's charge level. This avoids the battery pack overheating and potential electrical safety hazards caused by simultaneous charging and discharging during self-cleaning. It also avoids overloading the power supply circuit by simultaneously charging the battery pack and powering the cleaning module to drive self-cleaning, which would increase manufacturing costs, shorten the circuit's lifespan, and pose safety risks. Furthermore, it prevents insufficient battery power during self-cleaning, which could lead to low supply voltage and poor cleaning performance, ensuring that each module of the surface cleaning device performs self-cleaning according to the predetermined program.

[0029] 4. Before entering the self-cleaning mode, the battery detection module detects the battery pack power and selects the self-cleaning mode based on the remaining power of the rechargeable battery pack. On the one hand, it makes full use of the remaining power of the rechargeable battery pack to improve the self-cleaning effect. On the other hand, it selects a self-cleaning mode with different power based on the remaining power of the rechargeable battery pack to avoid the surface cleaning device being interrupted due to insufficient power during the self-cleaning process, which would cause the uncleaned roller brush to be unable to continue cleaning for a long time and shorten its service life. Attached Figure Description

[0030] The accompanying drawings, which form part of the technical solution of this application, are used to further understand the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0031] It should be noted that the surface cleaning device disclosed herein can be a self-propelled surface cleaning robot or a handheld surface cleaning device. The self-propelled surface cleaning robot, in addition to the aforementioned structure, also includes wheels for supporting and driving the surface cleaning device. The cleaning method of this disclosure will be illustrated below with reference to the accompanying drawings and a handheld surface cleaning device.

[0032] Figure 1 A schematic diagram of the surface cleaning device for the base;

[0033] Figure 2 This is a partial circuit diagram of a surface cleaning device.

[0034] Figure 3 This is a schematic flowchart of the power supply method for the surface cleaning device in Embodiment 1;

[0035] Figure 4 This is a schematic diagram of the power supply method for the surface cleaning device in Example 2;

[0036] Figure 5 This is a schematic flowchart of the power supply method for the surface cleaning device in Example 3;

[0037] Figure 6 This is a schematic diagram of the power supply method for the surface cleaning device in Example 4;

[0038] Figure 7 This is a schematic flowchart of the power supply method for the surface cleaning device in Example 5.

[0039] List of reference numerals in the attached diagram:

[0040] 1—Rechargeable battery pack; 2—Vacuum motor; 3—Sewage tank; 4—Sewage suction channel; 5—Roller brush; 6—Base; 7—Clean water tank; 10—Cleaning module; 11—Power supply circuit; 12—Water pump; 13—Roller brush motor; 14—Controller. Detailed Implementation

[0041] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0042] It should be noted that the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and should not be construed as limiting this application and its applications.

[0043] It should be noted that the surface cleaning device disclosed herein can be a self-propelled surface cleaning robot or a handheld surface cleaning device. The self-propelled surface cleaning robot, in addition to the aforementioned structure, also includes wheels for supporting and driving the surface cleaning device. The cleaning method of this disclosure will be illustrated below with reference to the accompanying drawings and a handheld surface cleaning device.

[0044] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] It should be noted that, in the description of this application, each functional module can be a physical module composed of multiple structures, components, or electronic devices, or a virtual module composed of multiple programs; each functional module can be an independent module or a module divided from a whole module according to its function. Those skilled in the art should understand that, provided the technical solution described in this application can be implemented, any changes in the composition, implementation, and positional relationship of the functional modules will not deviate from the technical principles of this application, and therefore should all fall within the protection scope of this application.

[0046] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] like Figure 1 As shown, the surface cleaning device of this application includes a cleaning module, a rechargeable battery pack, and a power supply circuit. The surface cleaning device can automatically or manually charge or self-clean according to user control. The cleaning module includes a roller brush 5, which can be a single roller brush, a double roller brush, or multiple roller brushes. The roller brush 5 also includes a roller brush cavity for accommodating the roller brush 5, which can be semi-enclosed or open. When the surface cleaning device is working, the roller brush 5 rotates to wipe the surface to be cleaned. The cleaning assembly also includes a suction channel 4 communicating with the roller brush to suck up dirt and a wastewater tank communicating with the suction channel 4 to collect dirt. The suction channel 4 includes a suction pipe and a suction port. The suction port is located on the roller brush cavity. When the roller brush 5 rotates, dirt enters the suction pipe through the suction port under the action of suction force, and the roller brush cavity wall plays a certain guiding role for the dirt. The cleaning module also includes a clean water tank 7 and a liquid delivery channel. The clean water tank 7 can hold clean water, cleaning fluid, or a mixture of both. One end of the liquid delivery channel is connected to the clean water tank 7, and the other end is connected to the cleaning component to provide cleaning fluid to the roller brush 5 for surface cleaning and self-cleaning.

[0048] When the surface cleaning device can be a vacuum and mop integrated surface cleaning device, the cleaning components include a roller brush motor 13, a vacuum motor 2, and a water pump 12. The roller brush motor 13 can be housed within or located outside the roller brush 5 and electrically connected to it, driving the roller brush 5 to rotate. The vacuum motor 2 is connected to the cleaning components through a suction channel 4, providing suction during the cleaning operation and self-cleaning process of the surface cleaning device. Dirt is detached from the roller brush 5 under suction and enters the suction channel 4, where it is collected in the wastewater tank 3. The water pump 12 provides power for the flow of liquid in the liquid delivery channel, causing liquid in the clean water tank 7 to enter the liquid delivery pipe and be transported to the cleaning components to wet the roller brush 5. The power supply circuit 11 is connected at one end to an external power source, and at the other end selectively supplies power to the rechargeable battery pack 1 and the electrical components of the cleaning module.

[0049] The surface cleaning device can also be a wet surface cleaning device, which includes a roller brush motor 13 and a water pump 12. The roller brush motor 13 can be installed inside the roller brush 5 or located outside the roller brush 5 and electrically connected to the roller brush 5, driving the roller brush 5 to rotate. The water pump 12 provides power for the flow of liquid in the liquid delivery channel, allowing the liquid in the clean water tank 7 to enter the liquid delivery pipe and be transported to the cleaning component to wet the roller brush 5. In self-cleaning mode, the water pump 12 can directly supply liquid to the roller brush 5 for self-cleaning, or the roller brush 5 can be placed in a water tank for self-cleaning.

[0050] The surface cleaning device also includes a controller 14, which can be used to receive information input by the user and / or obtain the docking status of the surface cleaning device. At the same time, the controller 14 controls the connection status between the power supply circuit, the rechargeable battery pack and the cleaning module according to the remaining power of the rechargeable battery pack.

[0051] The surface cleaning device may also have a base 6 for placing the surface cleaning device. The base 6 has a brush groove for accommodating the brush 5 and a coupler electrically connected to the surface cleaning device. The coupler on the base 6 can be electrically connected at one end to the power supply circuit 11 of the surface cleaning device and at the other end to an external power source to supply power to the power supply circuit 11 of the surface cleaning device. When the surface cleaning device is placed on the base 6, it can be selectively charged and put into self-cleaning mode.

[0052] It should be noted that the surface cleaning device disclosed herein can be a vacuum-mop integrated surface cleaning device or a wet surface cleaning device. The power supply method of this disclosure will be illustrated below with reference to the accompanying drawings and in conjunction with a vacuum-mop integrated surface cleaning device.

[0053] Before entering the self-cleaning mode, the remaining power Q of the rechargeable battery pack 1 is obtained, and the self-cleaning mode is selected based on the remaining power value to make full use of electrical energy. In the self-cleaning mode, when the surface cleaning device is placed on the base 6, it can be manually operated by the user (button, knob, touch) or automatically entered into the self-cleaning mode. During self-cleaning, the vacuum motor 2 is turned on, the roller brush 5 rotates, the water pump 12 supplies liquid, and the liquid in the clean water tank 7 wets the roller brush 5 through the liquid delivery channel. The dirt adhering to the roller brush 5 is collected into the dirty water tank 3 through the dirt suction channel 4. After the roller brush 5 is cleaned, the liquid supply is stopped and the roller brush 5 is spun dry.

[0054] It should be noted that the surface cleaning device may also be without the base 6. Instead, a covering component or other component that can accommodate the roller brush 5 can be provided on the roller brush 5, allowing the roller brush 5 to enter a self-cleaning mode. The surface cleaning device may also be directly connected to an external power source without the need for the base 6 to provide power. The embodiments in this application document only use a surface cleaning device with a base 6 as an example to further illustrate the power supply method of the surface cleaning device.

[0055] Example 1:

[0056] like Figure 1 , Figure 2 , 3As shown, the surface cleaning device is equipped with a detection element, and the base 6 is equipped with a trigger element. The detection element and the trigger element are set in corresponding positions. After the surface cleaning device and the base 6 are docked in place, the trigger element on the base 6 approaches the detection element on the surface cleaning device, so that the detection element generates a detection signal under the action of the trigger element. The controller 14 obtains the docking status between the surface cleaning device and the base 6 by acquiring the detection signal.

[0057] The surface cleaning device is equipped with a current sensor. After the surface cleaning device is docked with the base 6 and an electrical connection is formed, the current sensor detects the current and generates a detection signal.

[0058] If the surface cleaning device is not docked with the base 6, the cleaning mode is activated.

[0059] Specifically, when the controller 14 does not receive a detection signal, it determines that the surface cleaning device and the base 6 are in a non-dating state, and thus starts the cleaning mode. At this time, the controller 14 connects the circuit between the rechargeable battery pack 1 and the cleaning module, thereby enabling the rechargeable battery pack to supply power to the roller brush motor 13, the vacuum motor 2 and the water pump 12. The roller brush motor 13 drives the roller brush 5 to rotate, and the rotating roller brush 5 cleans the surface to be cleaned. The vacuum motor 2 generates suction at the suction port, sucking the dirt on the surface to be cleaned into the wastewater tank 3. The water pump 12 supplies the cleaning liquid in the clean water tank 7 to the roller brush 5 to assist the roller brush 5 in cleaning the surface to be cleaned.

[0060] If the surface cleaning device is docked with the base 6, the dirt status of the roller brush 5 is obtained.

[0061] Specifically, when the controller 14 receives a detection signal, it determines that the surface cleaning device and the base 6 are in a docking state, that is, the surface cleaning device and the base 6 have been docked in place. Then, the controller 14 obtains the dirt status of the roller brush 5: when the roller brush 5 is determined to be dirty, the self-cleaning mode is activated.

[0062] Alternatively, if the surface cleaning device is docked with the base 6, it can acquire user input signals. If it acquires a user input signal to start the self-cleaning mode, it can activate the self-cleaning mode.

[0063] The surface cleaning device includes a rechargeable battery pack 1 and a power supply circuit 11. The base 6 can be connected to mains power via a power adapter. The surface cleaning device can be electrically connected to the base 6 and use the power supply circuit 11 to charge the rechargeable battery pack 1. The surface cleaning device can automatically or manually enter a self-cleaning mode, and can automatically select the self-cleaning mode according to the remaining power of the rechargeable battery pack 1.

[0064] The power supply method in this embodiment includes:

[0065] Step S101: The surface cleaning device is docked with the base 6;

[0066] Step S001: The surface cleaning device receives the self-cleaning mode activation signal and obtains the remaining power Q of the rechargeable battery pack;

[0067] The self-cleaning mode activation signal can be manually input by the user via a button. The user button can be a lever-type, push-type, or other operation button. The user button can be located on the surface cleaning device itself, and can be a shared button with the cleaning mode, or two separate buttons. Alternatively, the user button can be located on the base 6, activated by the user stepping on it.

[0068] The self-cleaning mode can also be automatically activated based on the status of the surface cleaning device. It can be set to automatically enter the self-cleaning mode after the surface cleaning device is detected to be stably connected with the base 6 for a period of time. Alternatively, it can be set to detect the degree of dirt on the roller brush 5 through detection elements (such as cameras or colorimeters) after the surface cleaning device is detected to be stably connected with the base 6, and then decide whether to enter the self-cleaning mode based on the degree of dirt on the roller brush 5.

[0069] It should be noted that the battery detection module's detection of the rechargeable battery pack 1's charge level and the surface cleaning device's receipt of the self-cleaning signal and its self-cleaning process are not sequentially related. The battery detection module's detection of the rechargeable battery pack 1's charge level should be continuous throughout the entire process of the surface cleaning device being powered on. When the surface cleaning device initiates self-cleaning, it automatically selects the corresponding self-cleaning mode and power supply method based on the current charge level of the rechargeable battery pack 1. During the self-cleaning mode, the battery detection module continues to detect the charge level Q of the rechargeable battery pack 1 and automatically controls its charging and discharging.

[0070] Step S002: When the rechargeable battery pack charge is lower than the first charge value, the power supply circuit drives the cleaning module to self-clean.

[0071] It should be noted that the first battery level can be 10%-20% of the total battery level. For example, the first battery level can be 10%, 15%, 20% of the total battery level, etc.

[0072] It should be noted that when the rechargeable battery pack 1 enters the self-cleaning mode, the battery pack charge level is lower than the first charge level, and the surface cleaning device automatically performs self-cleaning in a low-power mode. The power supply circuit 11 supplies power to the rechargeable battery pack 1 while simultaneously supplying power to the cleaning module 10 to drive the surface cleaning device to perform self-cleaning; the rechargeable battery pack 1 does not discharge externally.

[0073] It should be noted that, in self-cleaning mode, the surface cleaning device can automatically control whether the power supply circuit supplies power to the rechargeable battery pack based on the remaining power Q of the rechargeable battery pack. That is, when the rechargeable battery pack's power level is below a first value, the power supply circuit is electrically connected to both the rechargeable battery pack and the cleaning module.

[0074] First, when the rechargeable battery pack 1 has a low charge level, it is kept in a charging-only state to avoid over-discharging and thus reduce its lifespan. Second, when the rechargeable battery pack 1 has a low charge level, the load on it is reduced to prevent poor cleaning performance due to low voltage supply. Third, the surface cleaning device is prevented from interrupting its self-cleaning process due to insufficient power, thus preventing the uncleaned roller brush 5 from being unable to continue cleaning for an extended period and shortening its lifespan.

[0075] Example 2:

[0076] like Figure 2 , Figure 4 As shown, the difference between this embodiment and other embodiments is that...

[0077] The power supply method in this embodiment includes:

[0078] Step S101: The surface cleaning device is docked with the base 6;

[0079] Step S001: The surface cleaning device receives the self-cleaning mode activation signal and obtains the remaining power Q of the rechargeable battery pack;

[0080] Step S003: When the power of the surface cleaning device is greater than the first power value but less than the second power value, the rechargeable battery pack and the power supply circuit jointly drive the cleaning module to self-clean.

[0081] It should be noted that when the charge of the rechargeable battery pack 1 is greater than or equal to the first charge value, the surface cleaning device can freely select either the low-power mode or the high-power mode for cleaning, depending on the degree of dirt on the roller brush 5 or the user's preference.

[0082] It should be noted that the second power value can be any value between 45% and 75% of the total power, such as 50%, 60%, or 70% of the total power.

[0083] Vacuum motor 2 requires a large suction force during operation, therefore its operating power is typically between 60W and 120W. The power of the roller brush motor 13 and water pump 12 is much lower than that of vacuum motor 2. Therefore, when the rechargeable battery pack 1 has a charge greater than a first charge value but less than a second charge value, rechargeable battery pack 1 drives only water pump 12, while power supply circuit 11 drives vacuum motor 2 and roller brush motor 13; or rechargeable battery pack drives roller brush motor 13, while power supply circuit 11 drives vacuum motor 2 and water pump 12; or rechargeable battery pack 1 is electrically connected to vacuum motor 2, and power supply circuit 11 is electrically connected to roller brush motor 13 and water pump 12. Rechargeable battery pack 1 and power supply circuit 11 jointly drive the cleaning module, reducing the load on rechargeable battery pack 1, lowering its discharge current, and reducing the load on the rechargeable battery pack within its tolerance range.

[0084] First, it avoids the problem of poor cleaning effect due to low voltage supplied by rechargeable battery pack 1. Second, it can make full use of the remaining power of rechargeable battery pack 1, allowing it to discharge moderately within its capacity without reducing its lifespan. Third, it reduces the load on power supply circuit 11 within the allowable range of rechargeable battery pack 1's power, avoiding the problem of excessive load on power supply circuit 11, increased manufacturing costs, and compromised electrical safety caused by simultaneously powering rechargeable battery pack 1 and driving all self-cleaning electrical components.

[0085] Example 3:

[0086] like Figure 2 , Figure 5 As shown, the difference between this embodiment and other embodiments is that the power supply method in this embodiment includes:

[0087] Step S101: The surface cleaning device is docked with the base 6;

[0088] Step S001: The surface cleaning device receives the self-cleaning mode activation signal and obtains the remaining power Q of the rechargeable battery pack;

[0089] Step S004: When the power of the surface cleaning device is greater than the second power value (including the second power value), the rechargeable battery pack drives the cleaning module to self-clean.

[0090] It should be noted that the second power value can be any value between 45% and 75% of the total power, such as 50%, 60%, or 70% of the total power.

[0091] When the rechargeable battery pack 1 is detected to be relatively fully charged, the self-cleaning process is driven by the rechargeable battery pack 1. The power supply circuit 11 does not supply power to the cleaning module 10, but it can charge the rechargeable battery pack 1. Properly discharging the rechargeable battery pack 1 when it is relatively fully charged ensures its normal operation and the self-cleaning effect of the surface cleaning device. This also reduces the load on the power supply circuit 11, saves manufacturing costs, and ensures electrical safety.

[0092] Example 4:

[0093] like Figure 2 , Figure 6 As shown, the difference between this embodiment and other embodiments lies in that, in this embodiment, the power supply method for the surface cleaning device in self-cleaning mode includes:

[0094] Step S101: The surface cleaning device is docked with the base 6;

[0095] Step S011: Obtain the power level Q of the rechargeable battery pack 1;

[0096] Step S012: When the charge Q of the rechargeable battery pack 1 is less than the first charge value, the power supply circuit 11 charges the rechargeable battery pack 1.

[0097] Step S013: When the charge Q of the rechargeable battery pack 1 is greater than the second charge value, the power supply circuit 11 stops charging the rechargeable battery pack 1.

[0098] In other words, while the surface cleaning device is performing self-cleaning, the power supply circuit can decide whether to charge or de-energize the rechargeable battery pack based on its remaining power level. That is, the power supply circuit can drive the cleaning module while simultaneously charging the rechargeable battery pack.

[0099] During the self-cleaning mode, charging of the rechargeable battery pack 1 is started or stopped at any time based on its real-time power level Q. This avoids the power supply circuit 11 not charging the rechargeable battery pack 1 during self-cleaning, which could lead to over-discharge of the rechargeable battery pack 1, resulting in a decrease in self-cleaning voltage and affecting the self-cleaning effect, or insufficient power in the rechargeable battery pack 1 during discharge, causing the self-cleaning mode to stop, and prolonged placement of the uncleaned roller brush 5 would affect its lifespan. Secondly, it avoids the power supply circuit 11 continuously charging the rechargeable battery pack 1 during self-cleaning, as prolonged simultaneous charging and discharging of the rechargeable battery pack 1 would cause excessively high battery pack temperature, damaging the battery capacity and lifespan. Starting or stopping charging the rechargeable battery pack 1 at any time based on its real-time power level Q not only ensures timely replenishment of the rechargeable battery pack 1's power but also enables battery health management, extending the battery pack's lifespan.

[0100] Example 5:

[0101] like Figure 2 , Figure 7 As shown, the difference between this embodiment and other embodiments lies in that the self-cleaning mode selection method in this embodiment includes:

[0102] Step S101: The surface cleaning device is docked with the base 6;

[0103] Step S001: The surface cleaning device receives the self-cleaning mode activation signal and obtains the remaining power Q of the rechargeable battery pack;

[0104] Step S102: Determine whether the charge level Q of the rechargeable battery pack 1 is lower than the first charge level value;

[0105] It should be noted that the first battery level can be 10%-20% of the total battery level. For example, the first battery level can be 10%, 15%, 20% of the total battery level, etc.

[0106] Step S103: When the charge Q of the rechargeable battery pack 1 is lower than the first charge value, the surface cleaning device performs self-cleaning in a low-power mode;

[0107] Step S104: When the charge Q of the rechargeable battery pack 1 is higher than the first charge value (including or equal to the first charge value), the surface cleaning device can freely select any cleaning mode between the low power mode and the high power mode according to the degree of dirt on the roller brush 5 or the user's preference.

[0108] It should be noted that the surface cleaning device includes at least a low-power self-cleaning mode and a high-power self-cleaning mode, as well as a two-week cleaning mode. The difference between the low-power and high-power self-cleaning modes lies in the power consumption of the cleaning module during the entire self-cleaning operation. This can be achieved by changing the self-cleaning time, the power of water pump 12, the power of vacuum motor 2, and the power of roller brush motor 13.

[0109] Before entering the self-cleaning mode, the battery detection module checks the battery pack charge level Q. Based on the charge level of the rechargeable battery pack 1, the self-cleaning mode is selected. This process maximizes the remaining charge of the rechargeable battery pack 1 to improve the self-cleaning effect. Furthermore, it rationally selects different power levels for each self-cleaning mode based on the remaining charge level. Firstly, when the charge level of the rechargeable battery pack 1 is low, the load on the rechargeable battery pack 1 is reduced to avoid poor cleaning performance due to low voltage supply. Secondly, it prevents the surface cleaning device from being interrupted due to insufficient power during the self-cleaning process, thus avoiding prolonged periods without cleaning and shortening its lifespan.

[0110] Example 6:

[0111] After the surface cleaning device ends its self-cleaning mode, the battery detection module checks the remaining power of the rechargeable battery pack 1. When the rechargeable battery pack 1 is detected to be partially charged, the power supply circuit 11 is electrically connected to the rechargeable battery pack 1 to charge it. When the rechargeable battery pack 1 is detected to be fully charged, the power supply circuit 11 automatically disconnects, stopping charging.

[0112] Preferably, the rechargeable battery pack 1 also has a buffer value. When the charge Q of the rechargeable battery pack 1 reaches the buffer value, the charging speed of the power supply circuit 11 to the rechargeable battery pack 1 is slowed down to prevent overcharging and overheating of the rechargeable battery pack 1, thereby avoiding damage to the rechargeable battery pack 1. The buffer value can be any value such as 80%, 85%, or 90% of the total charge.

[0113] In summary, by adopting this technical solution, the surface cleaning device can simultaneously charge and discharge based on the charge level of the rechargeable battery pack 1 while in self-cleaning mode. After self-cleaning, it automatically continues to charge the surface cleaning device based on the charge level of the rechargeable battery pack 1, and automatically adjusts the charging speed according to the battery pack's charge level, automatically cutting off power when fully charged. This avoids overcharging and damage to the rechargeable battery pack 1, and ensures that the user has sufficient power for the next use of the surface cleaning device, optimizing the user experience.

[0114] The technical solutions of this application have been described in conjunction with the preceding embodiments. However, it will be readily understood by those skilled in the art that the scope of protection of this application is not limited to these specific embodiments. Without departing from the technical principles of this application, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this application will fall within the scope of protection of this application.

Claims

1. A power supply method for a surface cleaning device, the surface cleaning device comprising a cleaning module, a rechargeable battery pack, and a power supply circuit, wherein the rechargeable battery pack is electrically connected to both the cleaning module and the power supply circuit, and the power supply circuit is connected to an external power source to charge the rechargeable battery pack, characterized in that, The surface cleaning device also includes a cleaning mode and a self-cleaning mode; During the cleaning mode, the rechargeable battery pack drives the cleaning module to clean the surface to be cleaned; In the self-cleaning mode, the remaining power Q of the rechargeable battery pack is obtained, and the self-cleaning of the cleaning module is selected to be driven by the rechargeable battery pack and / or the power supply circuit according to the relationship between the power of the rechargeable battery pack and the preset power. Among them, when the power of the rechargeable battery pack is lower than the first power value, the power supply circuit drives the cleaning module to self-clean.

2. The power supply method for the surface cleaning device according to claim 1, characterized in that, When the rechargeable battery pack has a charge level greater than a first charge level but less than a second charge level, the rechargeable battery pack and the power supply circuit work together to drive the cleaning module to self-clean.

3. The power supply method for the surface cleaning device according to claim 1, characterized in that, When the rechargeable battery pack has a charge level greater than the second charge level, the rechargeable battery pack drives the cleaning module to self-clean.

4. The power supply method for the surface cleaning device according to any one of claims 1-3, characterized in that, During the self-cleaning mode, the power supply circuit selectively charges the rechargeable battery, including: Step S011: Obtain the remaining power Q of the rechargeable battery pack; Step S012: When the rechargeable battery pack's charge is less than the first charge value, the power supply circuit charges the rechargeable battery pack; Step S013: Stop charging the rechargeable battery pack when the rechargeable battery pack power is greater than the second power value.

5. The power supply method for the surface cleaning device according to any one of claims 1-3, characterized in that, The surface cleaning device has two self-cleaning modes: a low-power mode and a high-power mode.

6. The power supply method for the surface cleaning device according to claim 5 is characterized in that, When the remaining power of the rechargeable battery pack is lower than the first power value, the self-cleaning mode of the surface cleaning device is a low-power mode.

7. The power supply method for the surface cleaning device according to claim 5, characterized in that, When the remaining power of the rechargeable battery pack is higher than the first power value, the surface cleaning device can select either a high-power mode or a low-power mode for self-cleaning.

8. The power supply method for the surface cleaning device according to any one of claims 1-3, characterized in that, After the self-cleaning process is completed, the power supply circuit charges the rechargeable battery pack. When the power of the surface cleaning device reaches the buffer value, the charging speed is slowed down to protect the rechargeable battery pack.

9. The power supply method for the surface cleaning device according to claim 1, characterized in that, When the rechargeable battery pack is fully charged, the power supply circuit automatically disconnects from the rechargeable battery pack, stopping charging.

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