Control circuit, circuit board and cleaning equipment

Abstract

The invention relates to a control circuit, a circuit board and cleaning equipment. The control circuit comprises a power supply; the load assembly is connected with the power supply; the control module is connected with the power supply and the load assembly, the control module comprises a power supply management unit and a main control management unit, the power supply management unit monitors and controls the operation of the power supply, and the main control management unit controls the operation of the load assembly. The power management unit and the main control management unit are integrated in the control module, so that the power management function and the main control management function are integrated in the same module, the management of a single circuit module on a power supply and a load assembly is realized, the structure of a control circuit is integrated, the number of devices corresponding to the control circuit is reduced, and the cost is reduced. The installation steps of the control circuit are reduced, and the occupied space of the control circuit is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of household appliance battery management, and in particular to a control circuit, a circuit board and a cleaning device. Background Art

[0002] With the rapid development of science and technology, many household cleaning equipment has become an indispensable equipment in people's daily life. Among them, floor scrubbers are favored by users as a cleaning equipment for hard floors.

[0003] The water pump of the floor scrubber first discharges clean water to wet the floor, then the floor brush of the floor scrubber cleans the floor, and finally the fan sucks the wastewater into the wastewater tank of the floor scrubber and takes the wastewater away from the cleaning site, achieving efficient cleaning of hard floors. However, in order to facilitate users to use it at home, floor scrubbers need to be miniaturized. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a control circuit, a circuit board and a cleaning device.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a control circuit for a cleaning device, the control circuit comprising: a power supply; a load component, the load component being connected to the power supply; and a control module, the control module being connected to the power supply and the load component, the control module comprising a power management unit and a main control management unit, wherein the power management unit monitors and controls the operation of the power supply, and the main control management unit controls the operation of the load component.

[0006] In some embodiments, the control circuit includes an input end and an output end, the input end includes an input positive pole and an input negative pole, and the output end includes an output positive pole and an output negative pole; the power supply includes a power supply positive pole and a power supply negative pole; wherein the input positive pole is connected to the power supply positive pole, and the output positive pole is connected to the power supply positive pole; the input negative pole is connected to the power supply negative pole, and the output negative pole is connected to the power supply negative pole.

[0007] In some embodiments, the control circuit includes a sleep mode, an operating mode, and a charging mode; when the control circuit is in the operating mode, the power supply supplies power to the output end, and the main control management unit controls the power supply to supply power to the power management unit; when the control circuit is in the charging mode, the input end supplies power to the power supply, and the main control management unit controls the power supply to supply power to the power management unit; when the control circuit is in the sleep mode, the main control management unit prevents the power supply from supplying power to the main control management unit.

[0008] In some embodiments, the control circuit includes a charging switch, which is arranged between the input positive pole and the positive pole of the power supply, wherein when the control circuit is in the charging mode, the power management unit monitors the total voltage value of the power supply, and when the total voltage value exceeds the total voltage threshold range, the power management unit controls the charging switch to disconnect.

[0009] In some embodiments, the power supply includes multiple battery cells; when the control circuit is in the charging mode, the main control management unit monitors the sub-voltage value of each of the battery cells. When the sub-voltage value exceeds the sub-voltage threshold range or the sub-voltage values ​​of the multiple battery cells are inconsistent, the main control management unit drives the power management unit to control the charging switch to disconnect.

[0010] In some embodiments, the power management unit is connected to the input positive electrode; when the control circuit is in the charging mode, the power management unit monitors the charging voltage value of the input positive electrode, and when the charging voltage value exceeds the charging voltage threshold range, the power management unit controls the charging switch to disconnect.

[0011] In some embodiments, the control circuit includes a first resistor, one end of the first resistor is connected to the negative electrode of the power supply, and the other end of the first resistor is connected to the negative electrode of the input; when the control circuit is in a charging mode, the main control management unit monitors the charging current value of the first resistor, and when the charging current value exceeds the charging current threshold range, the main control management unit drives the power management unit to control the charging switch to disconnect.

[0012] In some embodiments, the control circuit includes: a first output negative electrode; a first switch, wherein the first switch is arranged between the first output negative electrode and the power supply negative electrode; the load component includes a first load element, wherein the first load element is connected to the first output negative electrode, wherein when the control circuit is in the working mode, the main control management unit monitors the first working current value of the first resistor, and when the first working current value exceeds a first threshold range, the main control management unit drives the power management unit to control the charging switch to disconnect.

[0013] In some embodiments, the control circuit includes: a second output negative electrode; a second switch, the second switch is arranged between the second output negative electrode and the negative electrode of the power supply; a second resistor, the second resistor is connected in series with the second switch; the load component includes a second load element, the second load element is connected to the second output negative electrode, wherein, when the control circuit is in the working mode, the power management unit monitors the second working current value of the second resistor, and when the second working current value exceeds the second threshold range, the power management unit controls the second switch to disconnect.

[0014] In some embodiments, the control circuit includes: a third output negative electrode; a third switch, the third switch is arranged between the third output negative electrode and the power supply negative electrode; a third resistor, the third resistor is connected in series with the third switch; the load component includes a third load element, the third load element is connected to the third output negative electrode, wherein, when the control circuit is in the working mode, the power management unit monitors the third working current value of the third resistor, and when the third working current value exceeds a third threshold range, the power management unit controls the third switch to disconnect.

[0015] In some embodiments, the control circuit includes: an activation unit, the activation unit is connected to the main control management unit, the activation unit includes a first activation port and a second activation port, the first activation port is connected to the input positive pole; an activation switch, one end of the activation switch is connected to the positive pole of the power supply, and the other end of the activation switch is connected to the second activation port of the activation unit, wherein, when the input positive pole is charged, the activation unit sends an activation signal to the main control management unit, and the control circuit enters a charging mode; when the activation switch is closed, the activation unit sends an activation signal to the main control management unit, and the control circuit enters a working mode; when the input positive pole is not charged and the activation switch is disconnected, the activation unit sends a stop signal to the main control management unit, and the control circuit enters a sleep mode.

[0016] In some embodiments, the control circuit includes a first diode, an anode of the first diode is connected to the input positive electrode, and a cathode of the first diode is connected to the power supply positive electrode.

[0017] In some embodiments, the control circuit includes: a safety switch, one end of which can be connected to the positive pole of the power supply, and the other end of the safety switch can be connected to the input positive pole and the output positive pole; when the current flowing through the safety switch exceeds the safety threshold, the safety switch is disconnected.

[0018] In some embodiments, the main control management unit is connected to the safety switch, and when the current flowing through the safety switch exceeds the safety threshold, the main control management unit controls the safety switch to disconnect, and / or the power management unit is connected to the safety switch, and when the current flowing through the safety switch exceeds the safety threshold, the power management unit controls the safety switch to disconnect.

[0019] In some embodiments, the control circuit includes a second diode; when the main control management unit and the power management unit are both connected to the safety switch, the anode of the second diode is connected to the power management unit, and the cathode of the second diode is connected to the safety switch.

[0020] According to a second aspect of an embodiment of the present disclosure, a circuit board is provided, the circuit board comprising: a substrate; and the control circuit described in any one of the first aspects, wherein the control circuit is arranged on the substrate.

[0021] According to a third aspect of an embodiment of the present disclosure, a cleaning device is provided, the cleaning device comprising: the circuit board described in the second aspect.

[0022] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure integrates the power management unit and the main control management unit into the control module, thereby integrating the power management function and the main control management function into the same module, realizing the management of the power supply and load components by a single circuit module, integrating the structure of the control circuit, reducing the number of devices corresponding to the control circuit, reducing the installation steps of the control circuit, and reducing the space occupied by the control circuit.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 is a circuit diagram of a control circuit according to an exemplary embodiment.

[0026] Figure 2 It is a schematic structural diagram of a cleaning device according to an exemplary embodiment. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] In the related art, the battery management module of the cleaning equipment is set on the battery assembly of the cleaning equipment, and the battery management module is only responsible for battery safety management. The main control management module of the cleaning equipment is set on a circuit board independent of the battery assembly, and the main control management module is only responsible for motor control. The two modules need to be installed separately, the assembly of the whole machine is cumbersome and the cost is high, and the two need to be connected by a connecting wire, but the connecting wire is easily affected by interference signals.

[0029] In order to solve the above technical problems, according to an embodiment of the present disclosure, a control circuit is provided for a cleaning device, wherein the control circuit includes: a power supply; a load component, wherein the load component is connected to the power supply; and a control module, wherein the control module is connected to the power supply and the load component, and the control module includes a power management unit and a main control management unit, wherein the power management unit monitors and controls the operation of the power supply, and the main control management unit controls the operation of the load component.

[0030] The present invention integrates the power management unit and the main control management unit into the control module, thereby integrating the power management function and the main control management function into the same module, realizing the management of the power supply and load components by a single circuit module, integrating the structure of the control circuit, reducing the number of components corresponding to the control circuit, reducing the installation steps of the control circuit, and reducing the space occupied by the control circuit.

[0031] It can be understood that the control circuit involved in the present disclosure can be applicable to any one of the cleaning devices listed below.

[0032] It is understood that the cleaning equipment involved in the present disclosure is a device with an object cleaning function. For example, the cleaning equipment may be a floor scrubber, a sweeping robot, a sweeping and mopping machine, a steam mop, etc. In the following description, a floor scrubber is used as an example, but the present disclosure is not limited thereto. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the cleaning equipment.

[0033] Figure 1 is a circuit diagram of a control circuit according to an exemplary embodiment.

[0034] In some embodiments, Figure 1 As shown, the control circuit may include: a power supply 1 , a control module 2 and a load component 4 .

[0035] The power supply 1 may be a component that provides electrical energy to the cleaning device, so that the cleaning device can be freed from the constraints of the power cord, thereby improving the convenience of use of the cleaning device.

[0036] The control module 2 may be connected to the power source 1 and the load component 4 , and the control module 2 may monitor and control the operation of the power source 1 .

[0037] The control module 2 may include a power management unit 20 and a main control management unit 30 .

[0038] The power management unit 20 can monitor and control the operation of the power supply 1 , and the main control management unit 30 can control the operation of the load component 4 .

[0039] The power management unit 20 may be connected to the power supply 1. The power management unit 20 may monitor and control the operation of the power supply 1. For example, the power management unit 20 may monitor the voltage and current of the power supply 1. When the voltage or current of the power supply 1 is abnormal, the power management unit 20 may cut off the relevant switch, thereby stopping the power supply 1 from working.

[0040] The main control management unit 30 can be connected to the power management unit 20 , and the main control management unit 30 can be connected to the power source through the power management unit 20 , so that the power source 1 can supply power to the main control management unit 30 .

[0041] The load component 4 can be connected to the power supply 1 so that the power supply 1 can provide electrical energy to the load component 4, and the load component 4 can also be connected to the main control management unit 30. The load component 4 can be a component of the cleaning equipment that needs to be electrically driven. An exemplary load component 4 can include an electrically driven component such as a water pump, a fan or a floor brush. The main control management unit 30 can monitor and control the operation of the load component 4. Exemplarily, the main control management unit 30 can monitor the current of the load component, and when the current of the load component is abnormal, the main control management unit 30 can cut off the relevant switch, so that the load component 4 is powered off and stops working.

[0042] The present disclosure integrates the power management unit 20 and the main control management unit 30 in the control module 2, thereby integrating the power management function and the main control management function in the same module, realizing the management of the power supply and load components by a single circuit module, integrating the structure of the control circuit, reducing the number of components corresponding to the control circuit, reducing the installation steps of the control circuit, and reducing the space occupied by the control circuit.

[0043] The main control management unit 30 and the power management unit 20 can be connected through at least two circuits, one circuit is used to transmit the electric energy from the power supply 1, and the other circuit is used to exchange data. The main control management unit 30 can synchronize the parameters monitored by the main control management unit 30 to the power management unit 20, so that the power management unit 20 can use the parameters obtained by the main control management unit 30 to output data or switch the circuit state; based on the same principle, the power management unit 20 can also synchronize the parameters monitored by the power management unit 20 to the main control management unit 30, so that the main control management unit 30 can use the parameters obtained by the power management unit 20 to output data or switch the circuit state.

[0044] By establishing electrical connections and signal connections between the main control management unit 30 and the power management unit 20 , the main control management unit 30 and the power management unit 20 are integrated into the same control module 2 , thereby improving the integration of the control circuit.

[0045] The present disclosure is not limited thereto, and specific data transmission settings may be set according to data requirements of the main control management unit 30 and the power management unit 20 .

[0046] In some embodiments, Figure 1 As shown, the control circuit may include an input terminal that can serve as a charging port for the cleaning device and an output terminal that can serve as a power supply port for the power source 1 to supply the load component 4 .

[0047] The input end may include an input positive electrode C+ and an input negative electrode C-, the output end may include an output positive electrode P- and an output negative electrode, and the power supply 1 may include a power supply positive electrode B+ and a power supply negative electrode B-.

[0048] Among them, the input positive pole C+ is connected to the positive pole of the power supply B+, and the output positive pole P- is connected to the positive pole of the power supply B+; the input negative pole C- is connected to the negative pole of the power supply B-, and the output negative pole is connected to the negative pole of the power supply B-.

[0049] When an external power supply is used to charge the cleaning device, the external power supply can charge the power supply 1 through the input terminal. For example, the current can flow from the input positive electrode C+ to the power supply positive electrode B+, and then from the power supply negative electrode B- to the input negative electrode C-.

[0050] When the cleaning device is running, the power supply 1 can supply power to the load component 4 through the output end. For example, the current can flow from the positive electrode B+ of the power supply to the positive output electrode P+, ​​and then from the negative output electrode P- to the negative electrode B- of the power supply.

[0051] By merging the output end connected to the load component 4 and the input end connected to the charging port in the control circuit, the structure of the control circuit is integrated, the number of components corresponding to the control circuit is reduced, the installation steps of the control circuit are reduced, and the space occupied by the control circuit is reduced.

[0052] In some embodiments, Figure 1 As shown, the control circuit may include a sleep mode, an operating mode and a charging mode.

[0053] The sleep mode may be the state of the control circuit when the cleaning device enters sleep mode. When the control circuit is in the sleep mode, the power supply 1 stops supplying power to the control module 2, and the control circuit may stop running.

[0054] The working mode may be the state of the control circuit when the cleaning device is running. When the control circuit is in the working mode, the power supply 1 may supply power to the control module 2, and the control circuit may operate normally.

[0055] The charging mode may be a state of the control circuit when an external power source is used to charge the cleaning device. When the control circuit is in the charging mode, the power source 1 may supply power to the control module 2 and the control circuit may operate normally.

[0056] When the control circuit is in working mode, the power supply 1 can supply power to the output terminal, and the load component 4 can receive power from the power supply 1 through the output terminal. The power supply 1 can supply power to the main control management unit 30, and the main control management unit 30 can control the power supply 1 to supply power to the power management unit 20, and the control circuit can operate normally.

[0057] When the control circuit is in charging mode, the input terminal supplies power to the power supply 1, and the power supply 1 can supply power to the main control management unit 30. The power supply 1 can supply power to the main control management unit 30, and the main control management unit 30 can control the power supply 1 to supply power to the power management unit 20, and the control circuit can operate normally.

[0058] When the control circuit is in the sleep mode, the power source 1 stops supplying power to the main control management unit 30 , and the main control management unit 30 prevents the power source 1 from supplying power to the main control management unit 30 , and the control circuit stops running.

[0059] Exemplarily, a power switch may be provided in the main control management unit 30, one end of the power switch is connected to the power supply 1, and the other end of the power switch is connected to the power management unit 20. When the control circuit is in the charging mode or the working mode, the power switch is turned on, and the power supply 1 can supply power to the power management unit 20 through the main control management unit 30; when the control circuit is in the sleep mode, the power switch is disconnected, and the power supply 1 stops supplying power to the power management unit 20.

[0060] By making the control circuit enter different operating states in different modes, the control circuit can monitor and protect the power supply 1 and the load component 4 when the cleaning device is charging or working. When the cleaning device is in sleep mode, the control circuit can also go into sleep mode, thereby reducing the power consumption of the cleaning device.

[0061] In some embodiments, Figure 1 As shown, the control circuit may include a charging switch Q, which may be arranged between the input positive electrode C+ and the power supply positive electrode B+. When the charging switch Q is turned on, an electrical connection may be formed between the input positive electrode C+ and the power supply positive electrode B+. When the charging switch Q is turned off, the input positive electrode C+ and the power supply positive electrode B+ may be disconnected.

[0062] Among them, when the control circuit is in charging mode, the power management unit 20 can monitor the total voltage value of the power supply 1. When the total voltage value of the power supply 1 exceeds the total voltage threshold range, the power management unit 20 can control the charging switch Q to disconnect, thereby stopping the cleaning equipment from continuing to charge in time and protecting the power supply 1.

[0063] The total voltage value of the power source 1 exceeding the total voltage threshold range may include two situations: the total voltage value of the power source 1 is greater than the total voltage threshold and the total voltage value of the power source 1 is less than the total voltage threshold range. When the total voltage value of the power source 1 exceeds the total voltage threshold range, it indicates that the power source 1 or other circuits have a fault, and the charging switch Q is controlled to be disconnected by the power management unit 20, so as to stop the cleaning device from continuing to charge in time to prevent damage to the circuit and electronic components.

[0064] In some embodiments, Figure 1 As shown, the power source 1 may include a plurality of battery cells 10 , and the plurality of battery cells 10 may be connected in series to form the power source 1 .

[0065] Among them, when the control circuit is in the charging mode, the main control management unit 30 can monitor the sub-voltage value of each battery cell 10 respectively. When the sub-voltage value exceeds the sub-voltage threshold range or the sub-voltage values ​​between multiple battery cells 10 are inconsistent, the main control management unit 30 drives the power management unit 20 to control the charging switch Q to disconnect, thereby stopping the cleaning equipment from running and protecting the power supply 1.

[0066] The sub-voltage value of the battery cell 10 exceeding the sub-voltage threshold range may include two situations: the sub-voltage value of the battery cell 10 is greater than the sub-voltage threshold and the sub-voltage value of the battery cell 10 is less than the sub-voltage threshold range. When the sub-voltage value of the battery cell 10 exceeds the sub-voltage threshold range or the sub-voltage values ​​of multiple battery cells 10 are inconsistent, it indicates that the battery cell 10 or other circuits have a fault, and the charging switch Q is controlled to be disconnected by the power management unit 20, so as to stop the cleaning device from continuing to charge in time to prevent damage to the circuit and electronic components.

[0067] In some embodiments, the main control management unit 30 can monitor the total voltage of the power supply 1 by monitoring all the battery cells 10. When the main control management unit 30 monitors that the total voltage value of the power supply 1 exceeds the total voltage threshold range, the main control unit 30 can synchronize the total voltage information to the power management unit 20. After receiving the information that the total voltage value exceeds the total voltage threshold range, the power management unit 20 can control the charging switch Q to disconnect, so that the cleaning equipment stops charging. Therefore, when the main control unit 30 or the power management unit 20 fails, the other control unit can still play a protective role, thereby realizing secondary protection of the power supply 1.

[0068] In some embodiments, Figure 1As shown, the power management unit 20 can be connected to the input positive electrode C+, so that the power management unit 20 can monitor the charging voltage value of the input positive electrode C+ at the input end.

[0069] When the control circuit is in the charging mode, the power management unit 20 can monitor the charging voltage value of the input positive electrode C+. When the charging voltage value exceeds the charging voltage threshold range, the power management unit 20 controls the charging switch Q to be disconnected.

[0070] The charging voltage value of the input positive electrode C+ exceeding the charging voltage threshold range may include two situations: the charging voltage value of the input positive electrode C+ is greater than the charging voltage threshold and the charging voltage value of the input positive electrode C+ is less than the charging voltage threshold range. When the charging voltage value of the input positive electrode C+ exceeds the charging voltage threshold range, it means that the charging power source does not match the cleaning device or the internal circuit of the cleaning device fails, and the charging switch Q is controlled to be disconnected by the power management unit 20, so as to stop the cleaning device from continuing to charge in time to prevent damage to the circuit and electronic components.

[0071] In some embodiments, Figure 1 As shown, the control circuit may include a first resistor R1, one end of the first resistor R1 is connected to the negative electrode B- of the power supply, and the other end of the first resistor R1 is connected to the negative input electrode C-. The main control management unit 30 may be connected in parallel with the first resistor R1 to detect the current value flowing through the first resistor R1.

[0072] When the control circuit is in the charging mode, the main control management unit 30 can monitor the charging current value of the first resistor R1. When the charging current value exceeds the charging current threshold range, the main control management unit 30 can drive the power management unit 20 to control the charging switch Q to disconnect.

[0073] The charging current value exceeding the charging current threshold range may be that the charging current is greater than the charging current threshold range. When the charging current is greater than the charging current threshold range, it indicates that the charging power source does not match the cleaning device or that the internal circuit of the cleaning device fails, and the charging switch Q is controlled to be disconnected by the power management unit 20, thereby stopping the cleaning device from continuing to charge in time to prevent damage to the circuit and electronic components.

[0074] In other embodiments, the charging current value exceeding the charging current threshold range may also include a situation where the charging current is less than the charging current threshold range under a specific state of the control circuit.

[0075] In some embodiments, Figure 1 As shown, the control circuit may include: a first output cathode P1- and a first switch Q1.

[0076] The first switch Q1 may be disposed between the first output cathode P1- and the power cathode B-.

[0077] The load assembly 4 may include a first load element 41 , and the first load element 41 may be connected to the first output negative electrode P1 −.

[0078] When the first switch Q1 is turned on, an electrical connection is formed between the first output cathode P1- and the power cathode B-, the power supply 1 can supply energy to the first load element 41, and the first load element 41 operates normally under the driving of the electric energy.

[0079] When the first switch Q1 is turned off, a circuit is formed between the first output cathode P1- and the power cathode B-, the power source 1 stops supplying energy to the first load 41, and the first load 41 stops working.

[0080] In which, when the control circuit is in the working mode, the main control management unit 30 can monitor the first working current value flowing through the first resistor R1, and the first working current can be the working current of the first load element 41. When the first working current value exceeds the first threshold range, the main control management unit 30 can control the first switch Q1 to disconnect.

[0081] The first operating current value exceeding the first operating current threshold range may be that the first operating current value is greater than the first operating current threshold range. When the first operating current value is greater than the first operating current threshold range, it indicates that there is a fault in the internal energy supply of the cleaning device, and the first load element 41 is prone to damage when operating under an excessively high current. The main control management unit 30 controls the first switch Q1 to be disconnected, thereby stopping the operation of the first load element 41 in time to prevent damage to the first load element 41 and related circuits.

[0082] In some embodiments, the first load member 41 may be a fan. When the first load member 41 is in operation, suction may be generated, so that the cleaning device may inhale dust or sewage.

[0083] In some embodiments, Figure 1 As shown, the control circuit may include: a second output cathode P2- and a second switch Q2.

[0084] The second switch Q2 may be disposed between the second output cathode P2- and the power cathode B-.

[0085] The second resistor R2 is connected in series with the second switch Q2 , and the second resistor R2 can be connected in parallel with the power management unit 20 , so that the power management unit 20 can monitor the current flowing through the second resistor R2 .

[0086] The load assembly 4 may include a second load element 42 , and the second load element 42 may be connected to the second output negative electrode P2 −.

[0087] When the second switch Q2 is turned on, an electrical connection is formed between the second output cathode P2- and the power cathode B-, the power supply 1 can supply energy to the second load 42, and the second load 42 operates normally under the driving of the electric energy.

[0088] When the second switch Q2 is turned off, a circuit is formed between the second output cathode P2- and the power cathode B-, the power source 1 stops supplying energy to the second load 42, and the second load 42 stops working.

[0089] In which, when the control circuit is in the working mode, the power management unit 20 can monitor the second working current flowing through the second resistor R2, and the second working current can be the working current of the second load element 42. When the second working current value exceeds the second threshold range, the power management unit 20 can control the second switch Q2 to disconnect.

[0090] The second operating current value exceeding the second operating current threshold range may be that the second operating current value is greater than the second operating current threshold range. When the second operating current value is greater than the second operating current threshold range, it indicates that the internal energy supply of the cleaning device fails, and the second load element 42 is prone to damage when operating under an excessively high current. The power management unit 20 controls the second switch Q2 to be disconnected, thereby stopping the operation of the second load element 42 in time to prevent damage to the second load element 42 and related circuits.

[0091] In some embodiments, the second load member 42 may be a water pump. When the second load member 42 is in operation, it may absorb water in the cleaning device and spray the water onto the ground, so that the cleaning device may wet the ground.

[0092] In some embodiments, Figure 1 As shown, the control circuit may include: a third output cathode P3- and a third switch Q3.

[0093] The third switch Q3 may be disposed between the third output cathode P3- and the power cathode B-.

[0094] The third resistor R3 is connected in series with the third switch Q3 , and the third resistor R3 can be connected in parallel with the power management unit 20 , so that the power management unit 20 can monitor the current flowing through the third resistor R3 .

[0095] The load assembly 4 may include a third load element 43 , and the third load element 43 may be connected to the third output negative electrode P3 −.

[0096] When the third switch Q3 is turned on, an electrical connection is formed between the third output cathode P3- and the power cathode B-, the power supply 1 can supply energy to the third load element 43, and the third load element 43 operates normally under the driving of electric energy.

[0097] When the third switch Q3 is turned off, a circuit is formed between the third output cathode P3- and the power cathode B-, the power source 1 stops supplying energy to the third load 43, and the third load 43 stops working.

[0098] In which, when the control circuit is in the working mode, the power management unit 20 can monitor the third working current flowing through the third resistor R3, and the third working current can be the working current of the third load element 43. When the third working current value exceeds the third threshold range, the power management unit 20 can control the third switch Q3 to disconnect.

[0099] The third operating current value exceeding the third operating current threshold range may be that the third operating current value is greater than the third operating current threshold range. When the third operating current value is greater than the third operating current threshold range, it indicates that the internal energy supply of the cleaning device fails, and the third load element 43 is prone to damage when operating under an excessively high current. The third switch Q3 is controlled to be disconnected by the power management unit 20, thereby stopping the operation of the third load element 43 in time to prevent damage to the third load element 43 and related circuits.

[0100] In some embodiments, the third load member 43 may be a floor brush. When the third load member 43 is in operation, it may rub against the floor to achieve friction cleaning.

[0101] In some embodiments, when the control circuit is in sleep mode, the charging switch Q, the first switch Q1, the second switch Q2 and the third switch Q3 may all be turned off, thereby stopping the control circuit from running and reducing the power consumption of the control circuit in sleep mode.

[0102] In some embodiments, Figure 1 As shown, the control circuit may include: an activation unit 5 and an activation switch SW1.

[0103] The activation unit 5 can be connected to the main control management unit 30. The activation unit 5 may include a first activation port A1 and a second activation port A2. When the first activation port A1 or the second activation port A2 receives a high-level signal, the activation unit 5 can send an activation signal to the main control management unit 30 to enable the main control management unit 30 to start running and change the operating mode of the control circuit.

[0104] The first activation port A1 may be connected to the input positive electrode C+.

[0105] One end of the activation switch SW1 can be connected to the positive power supply electrode B+, and the other end of the activation switch SW1 can be connected to the second activation port A2 of the activation unit 5. When SW1 is closed, a path is formed between the positive power supply electrode B+ and the second activation port A2.

[0106] When the input positive pole C+ is charged, for example, when the cleaning device is connected to an external charging power supply, the input positive pole C+ can send a high-level signal to the first activation port A1, the activation unit 5 can send an activation signal to the main control management unit 30, the main control management unit 30 can control the power supply 1 to supply power to the power management unit 20, the charging switch Q can be turned on, and the control circuit can enter the charging mode.

[0107] When the activation switch SW1 is closed, for example, when the user instructs the cleaning device to start running, SW1 can be closed, the activation unit 5 can send an activation signal to the main control management unit 30, the main control management unit 30 can control the power supply 1 to supply power to the power management unit 20, the first switch Q1, the second switch Q2 and the third switch Q3 can be turned on, and the control circuit can enter the working mode.

[0108] When the input positive electrode C+ is not charged and the activation switch SW1 is disconnected, for example, when the user instructs the cleaning device to sleep or the cleaning device has not performed cleaning operations for a long time, the activation unit 5 can send a stop signal to the main control management unit 30, and the main control management unit 30 can control the power supply 1 to stop supplying power to the power management unit 20, the charging switch Q, the first switch Q1, the second switch Q2 and the third switch Q3 can all be disconnected, and the control circuit can enter sleep mode.

[0109] By activating unit 5, external commands or charging status changes can be monitored when the control circuit enters the sleep mode, so that the control circuit can respond to external commands or charging status changes in a timely manner while maintaining a low-power sleep mode, thereby realizing the response path of the cleaning equipment when it is in sleep mode.

[0110] In some embodiments, Figure 1 As shown, the control circuit may include a first diode D1 , an anode of the first diode D1 may be connected to the input positive electrode C+, and a cathode of the first diode D1 may be connected to the power supply positive electrode B+.

[0111] The first diode D1 can prevent the current of the power source 1 from flowing back to the input positive electrode C+, thereby preventing the input end of the charging port from being charged, thereby preventing the user from being electrocuted when touching the exposed charging port, thereby protecting the user's safety.

[0112] In some embodiments, Figure 1 As shown, the control circuit may include: a safety switch F1, one end of the safety switch F1 may be connected to the positive electrode B+ of the power supply, and the other end of the safety switch F1 may be connected to the positive input electrode C+ and the positive output electrode P+.

[0113] When the current flowing through the safety switch F1 exceeds the safety threshold, the safety switch F1 may be disconnected.

[0114] Exemplarily, when the control circuit is in charging mode, the current flowing through the safety switch F1 can be the current flowing from the input positive electrode C+ to the power supply positive electrode B+. When the current flowing from the input positive electrode C+ to the power supply positive electrode B+ is too large, the safety switch F1 can be disconnected, thereby preventing excessive current from damaging the power supply and other circuits.

[0115] Exemplarily, when the control circuit is in working mode, the current flowing through the safety switch F1 can be the current flowing from the output positive pole P+ to the power supply positive pole B+. When the current flowing from the output positive pole P+ to the power supply positive pole B+ is too large, the safety switch F1 can be disconnected, thereby preventing excessive current from damaging the power supply and other circuits.

[0116] By providing the safety switch F1 , a multi-level protection can be formed together with the main control management unit 30 and the power management unit 20 to prevent accidental damage to the control circuit.

[0117] In some embodiments, Figure 1 As shown, the main control management unit 30 can be connected to the safety switch F1. The main control management unit 30 can obtain the current flowing through the safety switch F1 by detecting R1 connected in series with F1. When the current flowing through the safety switch F1 exceeds the safety threshold, the main control management unit 30 controls the safety switch F1 to disconnect, thereby preventing excessive current from damaging the power supply and other lines.

[0118] In some embodiments, Figure 1 As shown, the power management unit 20 is connected to the safety switch F1. The power management unit 20 can obtain the current information flowing through the safety switch F1 through information transmission with the main control management unit 30. When the current flowing through the safety switch F1 exceeds the safety threshold, the power management unit 20 controls the safety switch F1 to disconnect, thereby preventing excessive current from damaging the power supply and other lines.

[0119] In some embodiments, Figure 1 As shown, the main control management unit 30 can be connected to the safety switch F1. When the current flowing through the safety switch F1 exceeds the safety threshold, the main control management unit 30 controls the safety switch F1 to be disconnected. The power management unit 20 is also connected to the safety switch F1. When the current flowing through the safety switch F1 exceeds the safety threshold, the power management unit 20 controls the safety switch F1 to be disconnected. This allows the main control management unit 30 or the power management unit 20 to control the safety switch F1 to be disconnected normally when one of the main control management unit 30 or the power management unit 20 cannot control the safety switch F1 to be disconnected normally, while the other control unit can control the safety switch F1 to be disconnected normally, thereby realizing multi-level protection of the control circuit, thereby preventing excessive current from damaging the power supply and other circuits.

[0120] In some embodiments, Figure 1 As shown, the control circuit may include a second diode D2.

[0121] When the main control management unit 30 and the power management unit 20 are both connected to the safety switch F1 , the anode of the second diode D2 can be connected to the power management unit 20 , and the cathode of the second diode D2 can be connected to the safety switch F1 .

[0122] Exemplarily, when the main control management unit 30 sends a disconnection signal to the safety switch F1 to disconnect the safety switch F1, the disconnection signal as an electrical signal will also flow to the power management unit 20 through the connection relationship between the power management unit 20 and the safety switch F1, so that the current will be backflowed into the power management unit 20, causing damage to the power management unit 20. By providing the second diode D2, the disconnection signal can be prevented from being backflowed into the power management unit 20, thereby protecting the power management unit 20 from damage by the backflow current.

[0123] In some embodiments, Figure 1 As shown, the first diode D1 and the second diode D2 can be Schottky diodes. The voltage drop of Schottky diodes is small, and the power loss is small, so when charging the cleaning device, there is no need to raise the voltage too high, so that the charging voltage can be maintained at a lower level, avoiding the threat of excessive charging voltage to the safety of users.

[0124] In some embodiments, Figure 1 As shown, the safety switch F1 can be a field transistor. When the main control management unit 30 sends a disconnect signal, the safety switch F1 can be disconnected. When the parameters such as voltage and current in the control circuit return to normal, the main control management unit 30 can control the safety switch F1 to close again, thereby realizing the reusability of the safety switch F1.

[0125] In some embodiments, Figure 1 As shown, the safety switch F1 may be a fuse. When a current having a current value equal to the fusing current value of the safety switch F1 flows through the safety switch F1, the safety switch F1 will be automatically blown to form an open circuit.

[0126] By selecting a fuse switch F1 with a fusing current equal to the fuse threshold, when the main control management unit 30 and the power management unit 20 cannot work normally, the fuse switch F1 will still blow by itself when a current exceeding the fuse threshold flows through it, thereby disconnecting the circuit to protect the circuit, forming a multi-level protection with the main control management unit 30 and the power management unit 20.

[0127] In some embodiments, Figure 1 As shown, the main control management unit 30 can be an analog front-end circuit. The analog front-end circuit is a hardware control circuit with the advantages of high parameter accuracy, fast response speed, and stable operation. It can be used to detect the sub-voltages of multiple battery cells 10 and quickly determine whether to disconnect the circuit based on the circuit parameters.

[0128] The power management unit 20 can be a single-chip microcomputer, which is a software-controlled circuit with the advantages of programmable program logic protection, a wide parameter threshold range, and multiple functions. It can be used to determine whether to disconnect the circuit according to circuit parameters and control the operating time of the load component 4.

[0129] In some embodiments, Figure 1 As shown, the control circuit also includes a display screen 7, which can be a display device for displaying the parameters of the cleaning device to the user. The display screen 7 can be connected to the power management unit 20, so that the power management unit 20 can display the cleaning device parameters obtained by itself and the cleaning device parameters synchronously obtained by the main control management unit 30 on the display screen 7 according to the settings. Exemplarily, the cleaning device parameters may include the remaining power of the power supply 1, whether the control circuit is faulty, the operating status of the cleaning device, etc. The display screen 7 can enable the user to better understand the operating status of the cleaning device.

[0130] In some embodiments, Figure 1 As shown, the control circuit also includes a communication interface 6, which may include a sending interface TX and a receiving interface RX. The communication interface 6 may serve as a communication channel between the control circuit and the outside world. The control circuit may send its own information or instructions to other components of the cleaning device through the sending interface TX, and the control circuit may also receive information or instructions from other components of the cleaning device through the receiving interface RX.

[0131] Based on the same concept, an embodiment of the present disclosure further provides a circuit board, which may include: a substrate and a control circuit. The control circuit may be arranged on the substrate, and the substrate provides a setting carrier for the control circuit.

[0132] Figure 2 It is a schematic structural diagram of a cleaning device according to an exemplary embodiment.

[0133] Based on the same concept, Figure 2 As shown, the embodiment of the present disclosure further provides a battery assembly 8, which may include: a circuit board. By combining the circuit board provided with the control circuit with the battery assembly 8, the structure of the control circuit is integrated, the number of circuit boards corresponding to the control circuit is reduced, the installation steps of the components corresponding to the control circuit are reduced, and the occupied space of the components corresponding to the control circuit is reduced.

[0134] In some embodiments, the battery assembly 8 may include a battery protective shell and a battery cell. The battery protective shell may wrap the battery cell and protect the battery cell, and the circuit board may be disposed on the battery protective shell.

[0135] Based on the same concept, an embodiment of the present disclosure further provides a cleaning device, which may include: a circuit board, which may be arranged inside the cleaning device, thereby reducing the space occupied by the control circuit.

[0136] In other embodiments, Figure 2 As shown, the cleaning device may include: a battery assembly 8; a circuit board may be arranged on the battery assembly 8, thereby reducing the space occupied by the control circuit.

[0137] The embodiment of the present disclosure integrates the power management unit 20 and the main control management unit 30 in the control module, thereby integrating the power management function and the main control management function in the same module, and realizing the management of the power supply and load components by a single circuit module, reducing the number of components corresponding to the control circuit, reducing the installation steps of the control circuit, and reducing the space occupied by the control circuit.

[0138] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0139] It is further understood that the terms "second", "secondary", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or degree of importance. In fact, the expressions "secondary", "secondary", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0140] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0141] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0142] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0143] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0144] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A control circuit for a cleaning device, characterized in that: The control circuit comprises: power supply; a load component connected to the power source; and A control module, the control module is connected to the power supply and the load component, the control module includes a power management unit and a main control management unit, The power management unit monitors and controls the operation of the power supply, and the main control management unit controls the operation of the load component.

2. The control circuit according to claim 1, characterized in that: The control circuit comprises an input end and an output end, the input end comprises an input positive electrode and an input negative electrode, and the output end comprises an output positive electrode and an output negative electrode; The power supply comprises a positive power supply electrode and a negative power supply electrode; Wherein, the input positive electrode is connected to the positive electrode of the power supply, and the output positive electrode is connected to the positive electrode of the power supply; The input negative electrode is connected to the negative electrode of the power supply, and the output negative electrode is connected to the negative electrode of the power supply.

3. The control circuit according to claim 2, characterized in that: The control circuit includes a sleep mode, an operating mode and a charging mode; When the control circuit is in the working mode, the power supply supplies power to the output terminal, and the main control management unit controls the power supply to supply power to the power management unit; When the control circuit is in the charging mode, the input terminal supplies power to the power supply, and the main control management unit controls the power supply to supply power to the power management unit; When the control circuit is in the sleep mode, the main control management unit prevents the power supply from supplying power to the main control management unit.

4. The control circuit according to claim 3, characterized in that: The control circuit includes a charging switch, which is arranged between the input positive electrode and the power supply positive electrode. Wherein, when the control circuit is in the charging mode, the power management unit monitors the total voltage value of the power supply, and when the total voltage value exceeds a total voltage threshold range, the power management unit controls the charging switch to be disconnected.

5. The control circuit according to claim 4, characterized in that: The power supply includes a plurality of battery cells; When the control circuit is in the charging mode, the main control management unit monitors the sub-voltage value of each of the battery cells. When the sub-voltage value exceeds the sub-voltage threshold range or the sub-voltage values ​​of multiple battery cells are inconsistent, the main control management unit drives the power management unit to control the charging switch to disconnect.

6. The control circuit according to claim 4, characterized in that: The power management unit is connected to the input positive electrode; When the control circuit is in the charging mode, the power management unit monitors the charging voltage value of the input positive electrode, and when the charging voltage value exceeds a charging voltage threshold range, the power management unit controls the charging switch to be disconnected.

7. The control circuit according to claim 4, characterized in that: The control circuit comprises a first resistor, one end of the first resistor is connected to the negative electrode of the power supply, and the other end of the first resistor is connected to the negative electrode of the input; When the control circuit is in a charging mode, the main control management unit monitors the charging current value of the first resistor, and when the charging current value exceeds a charging current threshold range, the main control management unit drives the power management unit to control the charging switch to be disconnected.

8. The control circuit according to claim 7, characterized in that: The control circuit comprises: The first output negative pole; A first switch, wherein the first switch is arranged between the first output negative electrode and the power supply negative electrode; The load assembly includes a first load element, wherein the first load element is connected to the first output negative electrode. Wherein, when the control circuit is in the working mode, the main control management unit monitors a first working current value of the first resistor, and when the first working current value exceeds a first threshold range, the main control management unit controls the first switch to be disconnected.

9. The control circuit according to claim 4, characterized in that: The control circuit comprises: The second output negative pole; A second switch, the second switch is arranged between the second output negative electrode and the power supply negative electrode; a second resistor, the second resistor being connected in series with the second switch; The load assembly includes a second load element, and the second load element is connected to the second output negative electrode. Wherein, when the control circuit is in the working mode, the power management unit monitors the second working current value of the second resistor, and when the second working current value exceeds a second threshold range, the power management unit controls the second switch to be disconnected.

10. The control circuit according to claim 4, characterized in that: The control circuit comprises: The third output negative pole; A third switch, the third switch is arranged between the third output negative electrode and the power supply negative electrode; a third resistor, the third resistor being connected in series with the third switch; The load assembly includes a third load element, and the third load element is connected to the third output negative electrode. Wherein, when the control circuit is in the working mode, the power management unit monitors the third working current value of the third resistor, and when the third working current value exceeds a third threshold range, the power management unit controls the third switch to be disconnected.

11. The control circuit according to claim 3, characterized in that: The control circuit comprises: An activation unit, the activation unit is connected to the main control management unit, the activation unit comprises a first activation port and a second activation port, the first activation port is connected to the input positive electrode; an activation switch, one end of which is connected to the positive electrode of the power supply, and the other end of which is connected to the second activation port of the activation unit, Wherein, when the input positive electrode is charged, the activation unit sends an activation signal to the main control management unit, and the control circuit enters a charging mode; When the activation switch is closed, the activation unit sends an activation signal to the main control management unit, and the control circuit enters a working mode; When the input positive pole is not charged and the activation switch is disconnected, the activation unit sends a stop signal to the main control management unit, and the control circuit enters a sleep mode.

12. The control circuit according to claim 2, characterized in that: The control circuit includes a first diode, an anode of the first diode is connected to the input positive electrode, and a cathode of the first diode is connected to the power supply positive electrode.

13. The control circuit according to claim 2, characterized in that: The control circuit comprises: A safety switch, one end of which can be connected to the positive electrode of the power supply, and the other end of which can be connected to the positive input electrode and the positive output electrode; When the current flowing through the safety switch exceeds the safety threshold, the safety switch is opened.

14. The control circuit according to claim 13, characterized in that: The main control management unit is connected to the safety switch, and when the current flowing through the safety switch exceeds the safety threshold, the main control management unit controls the safety switch to disconnect, and / or The power management unit is connected to the safety switch. When the current flowing through the safety switch exceeds a safety threshold, the power management unit controls the safety switch to be disconnected.

15. The control circuit according to claim 14, characterized in that: The control circuit includes a second diode; When the main control management unit and the power management unit are both connected to the safety switch, the anode of the second diode is connected to the power management unit, and the cathode of the second diode is connected to the safety switch.

16. A circuit board, characterized in that: include: substrate; The control circuit according to any one of claims 1 to 15, wherein the control circuit is arranged on the substrate.

17. A cleaning device, characterized in that: include: A circuit board as claimed in claim 16.

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