Patent Publication Number: US-2023148816-A1

Title: Cleaning base station and cleaning system

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present disclosure claims priority of Chinese Patent Application No. 202111343402.8, filed on Nov. 13, 2021, titled “cleaning base station and cleaning system”, the contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of cleaning equipments, and in particular, relates to a cleaning base station and a cleaning system. 
     BACKGROUND 
     A cleaning base station is a kind of equipment used in combination with a cleaning robot, and it may be used to clean a cleaning member (such as a roller brush, a mop, etc.) of the cleaning robot. The current cleaning base station is usually provided with a cleaning sink at the cleaning space of the cleaning robot. The water injection nozzle and the cleaning structure of the cleaning base station are both arranged in the cleaning sink, and the water injection nozzle sprays water upwards to wet the cleaning member of the cleaning robot, and the cleaning structure moves relative to the cleaning member of the cleaning robot, so as to clean the cleaning member of the cleaning robot. 
     However, when the cleaning base station cleans the cleaning member of the cleaning robot, the water attached to the cleaning member of the cleaning robot drops into the cleaning sink under its own gravity, and thus the sewage will easily flow back into the water injection nozzle. In addition, the sewage in the cleaning sink has not been discharged in time, which leads to bacteria breeding in the cleaning sink. 
     SUMMARY 
     An embodiment of the present disclosure provides a cleaning base station for a cleaning robot, the cleaning base station includes a base station body, a cleaning structure, a first liquid storage structure and a second liquid storage structure. The base station body defines a cleaning space where the cleaning robot is capable of being parked, and the base station body includes a liquid applicating port on an upper side of the cleaning space and a sewage suction outlet on a lower side of the cleaning space. The cleaning structure is installed on a lower side of the cleaning space and is configured to clean a cleaning member of the cleaning robot. The first liquid storage structure is in communication with the liquid applicating port, and the second liquid storage structure is in communication with the sewage suction outlet. 
     Another embodiment of the present disclosure provides a cleaning system, the cleaning system includes a cleaning robot and the above-mentioned cleaning base station, the cleaning robot is capable of docking with the cleaning base station, and the cleaning base station is configured to maintain the cleaning robot. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to explain the embodiments of the present disclosure or technical solutions in the prior arts more clearly, attached drawings required in the description of the embodiments or the prior arts will be briefly introduced below. Obviously, the attached drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained according to the structures shown in these attached drawings without creative labor. 
         FIG.  1    is a cross-sectional view of a cleaning base station according to an embodiment of the present disclosure; 
         FIG.  2    is a schematic structural view of the cleaning base station in  FIG.  1    from another perspective; 
         FIG.  3    is an exploded schematic view of a first liquid storage structure and a second liquid storage structure in  FIG.  1   ; 
         FIG.  4    is a schematic structural view of an embodiment of a liquid tank bracket in  FIG.  1   ; 
         FIG.  5    is a schematic structural view of the liquid tank bracket in  FIG.  4    from another perspective; 
         FIG.  6    is a schematic structural view of an embodiment of a chassis assembly in  FIG.  1   ; 
         FIG.  7    is an exploded schematic view of the liquid tank bracket and a drainage member in  FIG.  1   ; 
         FIG.  8    is a schematic structural view of another embodiment of the chassis assembly in  FIG.  1   ; 
         FIG.  9    is an exploded view of the chassis assembly in  FIG.  8   ; and 
         FIG.  10    is a functional block view of a cleaning system according to another embodiment of the present disclosure. 
     
    
    
     Implementation of objectives, functional features and advantages of the present disclosure will be further described in combination with embodiments and with reference to attached drawings. 
     DETAILED DESCRIPTION 
     Hereinafter, technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the attached drawings in the embodiments of the present disclosure. Obviously, the embodiments described are only part but not all of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the protective scope claimed in the present disclosure. 
     It shall be noted that, all directional indicators (such as up, down, left, right, front, back and so on) in the embodiment of the present disclosure are only used to explain relative position relationships and movement situations among components in a specific posture (as shown in the attached drawing). If the specific posture changes, the directional indicators will change accordingly. 
     In addition, in the present disclosure, descriptions such as “first”, “second” or the like are only used for descriptive purposes, and should not be understood as indicating or implying the relative importance thereof or implicitly indicating the number of indicated technical features. Therefore, features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In addition, technical solutions among the embodiments may be combined with each other on the basis that they can be realized by those of ordinary skill in the art. When the combination of the technical solutions is contradictory or impossible to be realized, it should be considered that such combination of the technical solutions does not exist, and it is not within the protective scope claimed in the present disclosure. 
     The present disclosure provides a cleaning base station, which is used in combination with a cleaning robot. The cleaning base station can not only be used to clean a cleaning member (a mop, a roller brush, etc.) on the cleaning robot, but also charge the robot, and perform other tasks on the cleaning robot, which are not listed herein. 
     Referring to  FIG.  1    and  FIG.  2   , an embodiment of the cleaning base station  100  includes a base station body  10 , a cleaning structure  20 , a first liquid storage structure  30 , and a second liquid storage structure  40 . 
     The base station body  10  may be formed in many shapes. For example, the base station body  10  may be cylindrical, L-shaped, C-shaped or formed in other shapes, and this is not specifically limited herein. 
     The base station body  10  defines a cleaning space  102  where the cleaning robot can be parked. The cleaning space  102  refers to a space position, and there are many types of cleaning space. For example, the cleaning space  102  may be open, semi-open or closed, and the type of the cleaning space  102  is not specifically limited herein. 
     The shape of the base station body  10  may also be set according to the type of the cleaning space  102 . For example, when the cleaning space  102  is open, the base station body  10  may be L-shaped, and in this case, the bottom part of the cleaning base station  100  may define the cleaning space  102  where the cleaning robot can be parked. 
     As another example, when the cleaning space  102  is semi-open, the base station body  10  may be C-shaped. In this case, the concave part of the cleaning base station  100  at the middle position may define the cleaning space  102 , or the side surface of the base station body  10  is concavely provided with a groove structure to form the cleaning space  102 . 
     As yet another example, when the cleaning space  102  is closed, the base station body  10  may form the cleaning space  102  by setting a cavity structure with a door that can be opened or closed, or the base station body  10  may form the cleaning space  102  by setting a structure capable of covering the cleaning robot. 
     The base station body  10  includes a liquid applicating port  11  on an upper side of the cleaning space  102 . The liquid applicating port  11  may be formed by the liquid outlet end of a nozzle or formed by a hole structure defined on the base station body  10 , and the liquid applicating port  11  may also be formed by a tubular structure enclosed by a plurality of structures. The way in which the liquid applicating port  11  is formed is not specifically limited herein. 
     The base station body  10  includes a sewage suction outlet  12  on a lower side of the cleaning space  102 . The sewage suction outlet  12  may be formed by the liquid inlet end of a sewage pipe, or formed by the opening of a pipe structure provided on the base station body  10 . The sewage suction outlet  12  may also be formed by other ways, which are not listed herein. 
     Both the first liquid storage structure  30  and the second liquid storage structure  40  are containers capable of storing liquid. The first liquid storage structure  30  and the second liquid storage structure  40  may be formed by cavity structures on the base station body  10 , and the first liquid storage structure  30  and the second liquid storage structure  40  may also be containers independent from the base station body  10 . The types of the first liquid storage structure  30  and the second liquid storage structure  40  are not specifically limited herein. 
     The first liquid storage structure  30  is in communication with the liquid applicating port  11  through a pipeline, and the flowing power for the liquid in the first liquid storage structure  30  to flow towards the liquid applicating port  11  is further related to the relative position relationship between the first liquid storage structure  30  and the liquid applicating port  11 . If the first liquid storage structure  30  is located above the liquid applicating port  11 , the liquid in the first liquid storage structure  30  may flow to the liquid applicating port  11  by its own gravity. If the first liquid storage structure  30  is flush with the liquid applicating port  11  or located below the liquid applicating port  11 , then it is necessary to connect a pump in series on the pipeline connecting the first liquid storage structure  30  and the liquid applicating port  11  or apply other power to drive the liquid in the first liquid storage structure  30  to flow. 
     The second liquid storage structure  40  is in communication with the sewage suction outlet  12  through a pipeline, and the flowing power for the liquid at the sewage suction outlet  12  to flow towards the second liquid storage structure  40  is further related to the relative position relationship between the second liquid storage structure  40  and the sewage suction outlet  12 . If the second liquid storage structure  40  is located below the sewage suction outlet  12 , the liquid at the sewage suction outlet  12  may flow to the second liquid storage structure  40  by its own gravity. If the sewage suction outlet  12  is flush with the second liquid storage structure  40  or located below the second liquid storage structure  40 , then it is necessary to connect a pump in series on the pipeline connecting the second liquid storage structure  40  and the sewage suction outlet  12  or apply other power to drive the liquid in the second liquid storage structure  40  to flow. 
     The cleaning structure  20  is configured to clean the cleaning member of the cleaning robot. The cleaning structure  20  may include two categories, i.e., a category which contacts with the cleaning member of the cleaning robot, and another category which does not contact with the cleaning member of the cleaning robot. The cleaning structures  20  belonging to the category that contacts with the cleaning member of the cleaning robot may be scrapers, scrubbers, roller brushes and other structural components, while the cleaning structures  20  belonging to the category that does not contact with the cleaning member of the cleaning robot may be impellers or ultrasonic generator and other structural components. 
     The cleaning structure  20  belonging to the category that contacts with the cleaning member of the cleaning robot may be fixedly installed on the base station body  10  or movably installed on the base station body  10 . If the cleaning structure  20  belonging to the category that contacts with the cleaning member of the cleaning robot is fixedly installed, then the cleaning member of the cleaning robot needs to rotate by itself during cleaning. If the cleaning structure  20  belonging to the category that contacts the cleaning member of the cleaning robot is movably installed, the cleaning member of the cleaning robot may be cleaned simply by driving the cleaning structure  20  to move. 
     The cleaning structure  20  is installed on a lower side of the cleaning space  102 , and the cleaning structure  20  may be directly fixed on the base station body  10 . At this time, the cleaning structure  20  may be fixed on the base station body  10  by screwing, welding, bonding or the like. The cleaning structure  20  may also be indirectly installed on the base station body  10 , and in this case, the cleaning structure  20  may be fixedly installed on the base station body  10  through a bracket, and the specific installation way of the cleaning structure  20  is not limited herein. 
     When the cleaning base station  100  is cleaning the cleaning member of the cleaning robot, the cleaning liquid in the first liquid storage structure  30  flows down on the lower side of the cleaning space  102  through the liquid applicating port  11  to wet the cleaning member of the cleaning robot, the cleaning structure  20  cleans the cleaning member of the cleaning robot to remove the dust, silt and other stains on the cleaning member of the cleaning robot, and the sewage dripping from the cleaning member of the cleaning robot enters the second liquid storage structure  40  through the sewage suction outlet  12 . With this arrangement, the sewage produced from the process of cleaning the cleaning member of the cleaning robot may be pumped out in time, thereby preventing the sewage from being stored at the cleaning space  102 , and further avoiding the problem of bacteria breeding in the cleaning space  102  of the cleaning base station  100 . 
     In order to ensure the integrity of the overall structure of the cleaning base station  100 , in some embodiments of the present disclosure, referring to  FIG.  1    and  FIG.  2   , the base station body  10  includes a chassis assembly  13  and a liquid tank bracket  14 , the liquid tank bracket  14  is installed above the chassis assembly  13 .The liquid tank bracket  14  and the chassis assembly  13  cooperatively define the cleaning space  102 . At this time, the liquid tank bracket  14  and the chassis assembly  13  may form an L-shaped configuration or a C-shaped configuration, and this is not specifically limited herein. 
     Referring to  FIG.  3    together, the liquid tank bracket  14  defines an accommodating cavity  141  configured to accommodate the first liquid storage structure  30  and the second liquid storage structure  40 . It shall be noted that, the accommodating cavity  141  may be provided with only one accommodating area, such that the first liquid storage structure  30  and the second liquid storage structure  40  may be installed together, or the accommodating cavity  141  may define two accommodating areas spaced apart from each other, such that the first liquid storage structure  30  and the second liquid storage structure  40  may be installed separately. 
     The first liquid storage structure  30  and the second liquid storage structure  40  are both installed in the liquid tank bracket  14 , which not only facilitates the firmly installation of the first liquid storage structure  30  and the second liquid storage structure  40 , but also improves the structural integrity of the cleaning base station  100 . In addition, the base station body  10  includes the chassis assembly  13  and the liquid tank bracket  14 , such that the area occupied by the whole base station body  10  in the horizontal direction may be reduced, and the cleaning base station  100  may be conveniently placed. 
     Furthermore, the first liquid storage structure  30  is configured to storage cleaning liquid and the second liquid storage structure  40  is configured to storage sewage. When the cleaning member of the cleaning robot is cleaned, the amount of the cleaning liquid in the first liquid storage structure  30  becomes less and less during use, and the amount of the sewage in the second liquid storage structure  40  becomes more and more. In view of this, the first liquid storage structure  30  can be a flexible liquid storage bag, and meanwhile, the first liquid storage structure  30  is installed inside the second liquid storage structure  40 . 
     Specifically, the second liquid storage structure  40  includes a tank body  40   a,  a box cover  40   b  and a sealing ring  40   c.  The box cover  40   b  is configured to cover the opening of the tank body  40   a,  and the tank body  40   a  and the box cover  40   b  are hermetically connected by the sealing ring  40   c.  The first liquid storage structure  30  may be fixedly connected with the tank body  40   a,  or the first liquid storage structure  30  may be fixedly connected with the box cover  40   b,  and this is not specifically limited herein. 
     In this way, when the second liquid storage structure  40  is not filled with sewage, the first liquid storage structure  30  may be fully filled with cleaning liquid, and after all the cleaning liquid in the first liquid storage structure  30  is discharged, the second liquid storage structure  40  may be fully filled with sewage. With this arrangement, not only may more cleaning water be filled without changing the volume of the accommodating cavity  141  of the liquid tank bracket  14 , but also the user can confirm that the second liquid storage structure  40  is fully filled with sewage when no cleaning liquid is discharged from the liquid applicating port  11 , such that it is convenient for the user to perform sewage disposal in time. 
     Further, referring to  FIG.  4    and  FIG.  5    together, the liquid tank bracket  14  is provided thereon with a first cleaning liquid pipe connection port  142  and a second cleaning liquid pipe connection port  143 . The first cleaning liquid pipe connection port  142  is in communication with the liquid applicating port  11 , and the first cleaning liquid pipe connection port  142  is in communication with the second cleaning liquid pipe connection port  143  through a pipeline. The second liquid storage structure  40  defines a third cleaning liquid pipe connection port  41 , and the third cleaning liquid pipe connection port  41  is in communication with the second cleaning liquid pipe connection port  143  through a pipeline. The first liquid storage structure  30  defines a fourth cleaning liquid pipe connection port  31 , and the fourth cleaning liquid pipe connection port  31  is in communication with the third cleaning liquid pipe connection port  41  through a pipeline. 
     The liquid applicating port  11 , the first cleaning liquid pipe connection port  142 , the second cleaning liquid pipe connection port  143 , the third cleaning liquid pipe connection port  41  and the fourth cleaning liquid pipe connection port  31  form a cleaning liquid supply channel. As compared to the case where the first liquid storage structure  30  is directly connected to the liquid applicating port  11  through a pipeline, the formation of cleaning liquid pipe connection ports connected with the pipelines on the liquid tank bracket  14 , the first liquid storage structure  30  and the second liquid storage structure  40  may make the liquid system of the cleaning base station  100  more stable and the pipelines more orderly. 
     Referring to  FIG.  6    together, the chassis assembly  13  defines a first sewage pipe connection port  131  communicated with the sewage suction outlet  12 , the liquid tank bracket  14  further defines a second sewage pipe connection port  144 , and the second liquid storage structure  40  defines a third sewage pipe connection port  42 . The first sewage pipe connection port  131  is in communication with the second sewage pipe connection port  144  through a pipeline, and the second sewage pipe connection port  144  is in communication with the third sewage pipe connection port  42  through a pipeline. 
     The sewage suction outlet  12 , the first sewage pipe connection port  131 , the second sewage pipe connection port  144  and the third sewage pipe connection port  42  form a sewage recycle channel. As compared to the case where the second liquid storage structure  40  is directly connected to the sewage suction outlet  12  through a pipeline, the formation of the sewage pipe connection ports connected with the pipelines on the chassis assembly  13 , the liquid tank bracket  14 , and the second liquid storage structure  40  may further make the liquid system of the cleaning base station  100  more stable and the pipelines more orderly. 
     In order to ensure that the sewage can be quickly pumped into the second liquid storage structure  40 , the second liquid storage structure  40  defines a first air exhaust port  43 , and the liquid tank bracket  14  defines a second air exhaust port  145  which is in communication with the first air exhaust port  43  via a pipeline. The cleaning base station  100  further includes an air pump  148  fixed on the liquid tank bracket  14 , and the air pump 148  is in pneumatic communication with the second air exhaust port  145  via a pipeline. 
     A negative pressure may be generated inside the second liquid storage structure  40  by pumping out the air from the second liquid storage structure  40  through the air pump  148 . In this way, a suction force for sucking sewage is formed at the sewage suction outlet  12  that is in communication with the second liquid storage structure  40 , thereby accelerating the recycle of sewage. 
     In order to improve the structural integrity of the cleaning base station  100 , the liquid applicating port  11  may be integrated on the liquid tank bracket  14  and defined at the bottom part of the liquid tank bracket  14 . Specifically, referring to  FIG.  7   , the bottom part of the liquid tank bracket  14  is concavely provided with a drainage groove  146  that is in communication with the first liquid storage structure  30 . The base station body  10  further includes a drainage member  15  configured to cover the opening of the drainage groove  146 , and an opening penetrating the drainage member  15  is in communication with the drainage groove  146  and forms the liquid applicating port  11 . 
     The drainage member  15  may be provided in many types of structures. For example, the drainage member  15  may be provided in a plate-like structure, a groove-like structure, or other types of structures, and this is not specifically limited herein. The drainage member  15  may be connected with the liquid tank bracket  14  in many ways. For example, the drainage member  15  may be fixedly connected with the liquid tank bracket  14  by bonding, screwing, plugging and other ways. In some embodiments, the drainage member  15  is plugged into the drainage groove  146  of the liquid tank bracket  14 , which features convenient and quick disassembly and assembly and facilitates the assembly of the drainage member  15  with the liquid tank bracket  14 . 
     It shall be noted that, if part of the chassis assembly  13  below the cleaning space  102  is at a flat surface, the flow of liquid on the flat surface is uncertain, and if the cleaning member of the cleaning robot is in a rotating state when it is cleaning, then the cleaning liquid is likely to be thrown out and thus affects the recycle of sewage. 
     Based on the above problems, referring to  FIG.  1   ,  FIG.  7   , FIG. Band  FIG.  9   ,the chassis assembly  13  includes a chassis  132  and a cleaning sink  133 . The cleaning sink  133  is located below the cleaning space  102 , and is detachably mounted on the chassis  132 . The sewage suction outlet  12  is arranged on the chassis  132 , the cleaning sink  133  is provided with a sewage outlet  1331  communicated with the sewage suction outlet  12 , and the cleaning structure  20  is arranged in the cleaning sink  133 . 
     When the cleaning member of the cleaning robot is placed at the cleaning space  102 , the cleaning member of the cleaning robot may extend into the cleaning sink  133 . This arrangement can not only prevent sewage from flowing everywhere, but also facilitate centralized recycle of sewage, and it can also effectively block the cleaning liquid or sewage from being thrown out by the cleaning member of the cleaning robot. In addition, the cleaning sink  133  is detachably connected with the chassis  132 , such that it is convenient to remove the cleaning sink  133  from the chassis  132 , thereby facilitating cleaning of the cleaning sink  133 . 
     It shall be said that, the chassis  132  may be connected with the cleaning sink  133  in many ways. For example, the chassis  132  may be connected with the cleaning sink  133  by buckle connection, by magnetic component connection or by other ways, and this is not listed herein. 
     In some embodiments of the present disclosure, the chassis  132  includes a bottom plate  1321  and a limiting plate  1322  arranged on the upper surface of the bottom plate  1321 , the limiting plate  1322  and the bottom plate  1321  cooperatively define an accommodating space  1325  with an open upper end, and the limiting plate  1322  is partially provided with a penetrating opening in a horizontal direction to form an entrance  1326  in communication with the accommodating space  1325 , the cleaning sink 133  is installed in the accommodating space  1325 , two opposite sides of the cleaning sink 133  adjacent to the penetrating opening are both provided with two lugs  1332 , and the two lugs  1332  respectively abut against the corresponding sides of the limiting plate  1322 . 
     When the cleaning sink  133  is assembled into the accommodating space  1325 , the bottom part of the cleaning sink  133  abuts against the bottom plate  1321 , and the position of the cleaning sink  133  is limited by the limiting plate  1322  in the horizontal direction. At the same time, the two lugs  1332  on the cleaning sink  133  are all equivalent to elastic structures, and the two lugs  1332  respectively abut against the corresponding sides of the limiting plate  1322 . In this way, the two lugs  1332  tend to move towards each other, such that the side end of the cleaning sink  133  that is adjacent to the lug  1332  is positioned and thus the cleaning sink  133  is fixed on the chassis  132 . 
     It shall be noted that, the horizontal cross-sectional shape of the cleaning sink  133  may match with the horizontal cross-sectional shape of the accommodating space  1325 ,such that when the cleaning sink  133  is assembled into the accommodating space  1325 , each place on the outer wall of the cleaning sink  133  can contact with the limiting plate  1322 , thereby making the connection between the cleaning sink  133  and the chassis  132  more stable. 
     Considering that the cleaning member of the cleaning robot needs to rotate when cleaning the floor, the cleaning member of the cleaning robot may also move relative to the cleaning structure  20  by self-rotation during cleaning. In view of this, the cleaning structure  20  may be formed by a plurality of protruding portions  21  arranged in the cleaning sink  133 , and the plurality of protruding portions  21  extend from the bottom part of the cleaning sink  133  towards the opening of the cleaning sink  133 . 
     When the cleaning robot is parked at the cleaning space  102 , the cleaning member of the cleaning robot is in contact with the plurality of protruding portions  21 , and there is a certain amount of interference between the cleaning member of the cleaning robot and the plurality of protruding portions  21 . In this way, the plurality of protruding portions 21  can fully scrape the cleaning member of the cleaning robot after the cleaning member of the cleaning robot is wet, and thus the cleaning member of the cleaning robot can be cleaned more thoroughly. 
     Furthermore, the plurality of protruding portions  21  are arranged at linear intervals, and the interval between two adjacent protruding portions  21  is set to be less than or equal to the outer diameter of the protruding portions  21 , the plurality of protruding portions  21  are respectively arranged on a plurality of concentric circles arranged at intervals from inside to outside, each of the protruding portions 2 l intersects with or is tangent to the concentric circles on the inner and outer sides, and one protruding column  21  among the plurality of protruding portions  21  is corresponding to the center of the cleaning member of the cleaning robot in position. With this arrangement, it can be ensured that the collection of the cleaning areas of the plurality of protruding portions  21  can cover the cleaning member of the entire cleaning robot. 
     It shall be noted that, the plurality of protruding portions  21  may be arranged at straight linear intervals, the plurality of protruding portions  21  may be arranged in a broken line, or the plurality of protruding portions  21  may be arranged in a wavy line. The way in which the plurality of protruding portions  21  are arranged is not specifically limited herein. 
     Further, the cleaning sink  133  includes a sewage discharge area  1335  and a cleaning area  1336  which are in communication with each other, the bottom wall of the cleaning area  1336  is positioned higher than the bottom wall of the sewage discharge area  1335 , the bottom wall of the cleaning area  1336  protrudes upward to form a liquid storage surface  1333 , and the plurality of protruding portions 2 l are all arranged on the liquid storage surface  1333 . 
     It shall be noted that, the liquid storage surface  1333  may be a flat surface, a concave curved surface, the liquid storage surface  1333  may also be formed by splicing a flat surface and a curved surface, or may be other types of surfaces, and this is not listed herein. 
     The liquid storage surface  1333  may be formed by inclining part of the bottom wall of the cleaning area  1336  in the up-down direction, or the liquid storage surface  1333  may be formed by inclining the whole bottom wall of the cleaning area  1336  in the up-down direction. In some embodiments, the liquid storage surface  1333  is formed by inclining the whole bottom wall of the cleaning area  1336  in the up-down direction, such that the flow direction of the cleaning liquid in the cleaning area  1336  may be determined. 
     When the cleaning member of the cleaning robot is placed at the cleaning space  102 , the cleaning member of the cleaning robot extends into the cleaning sink  133  and contacts with the liquid storage surface  1333  and the plurality of protruding portions  21  arranged on the liquid storage surface  1333 , and the cleaning liquid flows downward from the liquid applicating port  11  to the liquid storage surface  1333 . When the cleaning member of the cleaning robot rotates, it can not only throw out the cleaning liquid on the liquid storage surface  1333 , but also throw out the cleaning liquid adsorbed by itself. The cleaning liquid thrown out by the cleaning member of the cleaning robot is temporarily stored on the liquid storage surface  1333 , such that it can be ensured that there is enough cleaning liquid on the liquid storage surface  1333 , thereby achieving the effect of soaking the cleaning member of the cleaning robot, and further making the cleaning member of the cleaning robot have sufficient cleaning liquid. 
     In addition, since the liquid storage surface  1333  is higher than the bottom wall of the sewage discharge area  1335 , the flow direction of the cleaning liquid in the cleaning sink  133  is determined, and the cleaning liquid can only flow from the cleaning area  1336  to the sewage discharge area  1335 . In this way, the problem that the cleaning member of the cleaning robot will get dirty again due to the backflow of the sewage is avoided, thereby ensuring the cleaning effect of the cleaning member of the cleaning robot. 
     Furthermore, the liquid storage surface  1333  is obliquely arranged from the rear side of the cleaning base station  100  toward the front side of the cleaning base station  100 . With this arrangement, the cleaning liquid that has washed the cleaning member of the cleaning robot may flow from top to bottom along the liquid storage surface  1333 , such that dirt such as dust, silt or the like washed from the cleaning member of the cleaning robot may be washed away together, thereby ensuring that the cleaning liquid on the upper side of the liquid storage surface  1333  is always clean, and further facilitating the cleaning of the cleaning member of the cleaning robot. 
     Further, the liquid storage surface  1333  is concavely provided thereon with a liquid storage groove  1334 , and the liquid storage groove  1334  includes a first liquid storage section  1334   a  and a second liquid storage section  1334   b.  The first liquid storage section  1334   a  extends from the upper side of the liquid storage surface  1333  to the lower side of the liquid storage surface  1333 , the second liquid storage section  1334   b  is located below the first liquid storage section  1334   a  and extends in the horizontal direction, one end of the second liquid storage section  1334   b  is in communication with one end of the second liquid storage section  1334   b,  and the plurality of protruding portions  21  are arranged at intervals along the extension direction of the liquid storage groove  1334  and located at an edge of the liquid storage groove  1334 . 
     The cleaning liquid flows down into the first liquid storage section  1334   a  through the liquid applicating port  11  and finally enters the sewage discharge area  1335  through the second liquid storage section  1334   b.  The arrangement of the liquid storage groove  1334  may effectively collect the cleaning liquid, such that the position of the cleaning member of the cleaning robot that passes through the first liquid storage section  1334   a  may be fully wet. Meanwhile, it is convenient for the dirt on the cleaning member of the cleaning robot to flow along the liquid storage groove  1334  and be discharged into the sewage discharge area  1335 . 
     When part of the cleaning member of the cleaning robot that extends into the first liquid storage section  1334   a  is rotated out of the first liquid storage section  1334   a,  it can not only adsorb enough cleaning liquid, but also take out the cleaning liquid in the first liquid storage section  1334   a,  such that more cleaning liquid is thrown onto the liquid storage surface  1333 . The cleaning liquid on the liquid storage surface  1333  flows downward into the second liquid storage section  1334   b  under its own gravity, the cleaning liquid in the first liquid storage section  1334   a  that is not adsorbed by the cleaning member of the cleaning robot flows into the second liquid storage section  1334   b  along the liquid storage surface  1333 , and the confluence of the two cleaning liquid still provides enough cleaning liquid in the second liquid storage section  1334   b.  In this way, the cleaning member of the cleaning robot may be cleaned for the second time when passing through the second liquid storage section  1334   b.  That is, the cleaning member of the cleaning robot may be cleaned twice each time it is rotated by one circle, and this is beneficial for improving the cleaning efficiency of the cleaning base station  100 . 
     The cleaning member of the cleaning robot still contains a lot of cleaning liquid after it has been cleaned, and if the cleaning member of the cleaning robot is naturally air-dried, it will take a long time, and this will easily lead to bacteria breeding in the cleaning member of the cleaning robot. In view of this, referring to  FIG.  1    and  FIG.  4   , the cleaning base station  100  is further provided with a fan  50 , and the fan  50  is configured to blow air to the cleaning member of the cleaning robot, so as to accelerate the air to flow around the cleaning member of the cleaning robot, and further accelerate the air drying speed of the cleaning member of the cleaning robot. 
     Furthermore, an air outlet  147  is defined on one side of the liquid tank bracket  14  that is located in the horizontal direction of the cleaning space  102 , and the fan  50  is installed on the liquid tank bracket  14  and in communication with the air outlet  147  through a pipeline. As compared to the technical solution in the prior art that the air outlet  147  and the liquid applicating port  11  are implemented by a common component, the air blown out in this technical solution contains no moisture and provides good air drying effect. 
     Referring to  FIG.  10   , another embodiment of the present disclosure further provides a cleaning system  200 , the cleaning system  200  includes a cleaning robot  300  and the cleaning base station  100 . The cleaning robot  300  is capable of docking with the cleaning base station  100 . The cleaning base station  100  is configured to maintain the cleaning robot  300 , for example, the cleaning base station  100  is configured to clean a cleaning member of the cleaning robot  300 , charge the cleaning robot  300 , and add cleaning liquid to the cleaning robot  300 . Reference may be made to the above-mentioned embodiments for the specific structure of the cleaning base station  100 . As the cleaning system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and this will not be further described herein. 
     What described above are only the some embodiments of the present disclosure, and are not intended to limit the protective scope claimed in the present disclosure. Any equivalent structures or modifications that are made according to the specification and the attached drawings of the present disclosure under the concept of the present disclosure, or any direct/indirect applications of the present disclosure in other related technical fields shall all be included within the scope claimed in the present disclosure.