Circuit for battery charging management, circuit for charging control and clothes airing machine

Abstract

The embodiment of the utility model provides a circuit for battery charging management, a circuit for charging control and a clothes airing machine, and relates to the technical field of charging. The circuit for battery charging management comprises a power management chip and a switch element for controlling the circuit to be switched on and switched off. The switch element is respectively connected with the input end of the power management chip and a charging input port of an electric appliance, and a control buckle of the switch element is connected with a microprocessor of the electric appliance; the integrated circuit bus communication port of the power management chip is connected with the microprocessor, and the output end is connected with the battery charging port. According to the embodiment of the invention, the charging parameters can be dynamically adjusted in the charging process through the power management chip, and the arrangement of the switching element can realize the control of the on-off of the circuit, thereby avoiding the generation of sparks at the moment when the charging input port is in contact with the external power supply, and improving the safety of battery charging.

Description

Technical Field

[0001] The present disclosure relates to the field of charging technology, and in particular, to a circuit for battery charging management, a circuit for charging control, and a clothes drying machine. Background Art

[0002] When charging a battery, the charging input port is typically connected directly to the battery charging port, allowing the battery to be charged from an external power source. However, this arrangement cannot dynamically adjust charging parameters to suit the battery's charging state during the charging process. Furthermore, when the charging input port contacts the external power source, the instantaneous current change can cause sparks, compromising battery charging safety. Utility Model Content

[0003] To solve at least one of the above technical problems, the present disclosure provides a circuit for battery charging management, a circuit for charging control, and a clothes drying machine. The technical solution is as follows:

[0004] In a first aspect, an embodiment of the present disclosure provides a circuit for battery charging management, comprising a power management chip and a switch element for controlling the conduction and cutoff of the circuit;

[0005] The switch element is connected to the input terminal of the power management chip and the charging input port of the electrical appliance respectively, and the control port of the switch element is connected to the microprocessor MCU of the electrical appliance;

[0006] The integrated circuit bus IIC communication port of the power management chip is connected to the MCU, and the output end is connected to the battery charging port.

[0007] In a feasible embodiment, the switch element includes a MOS switch, and a control port of the MOS switch is connected to the first IO port of the MCU;

[0008] When the MCU sets the IO port to a high level, the MOS tube is cut off;

[0009] When the MCU sets the IO port to a low level, the MOS tube is turned on.

[0010] In a feasible embodiment, the MOS transistor includes a P-type MOS transistor, and a gate of the P-type MOS transistor is connected to the first IO port of the MCU.

[0011] In a feasible embodiment, the IIC communication port of the power management chip is connected to the second IO port of the MCU, for receiving instructions sent by the MCU and / or feeding back battery-related information to the MCU.

[0012] In a second aspect, an embodiment of the present disclosure provides a circuit for charging control, comprising: an MCU of an electrical appliance and the circuit for battery charging management described in the first aspect and any embodiment thereof.

[0013] In a feasible embodiment, the first IO port of the MCU is connected to the control port of the switch element, and the second IO port is connected to the IIC communication port of the power management chip.

[0014] In a feasible embodiment, a temperature sensor is further included, which is arranged in the area around the battery and connected to the MCU, and is used to monitor the battery temperature during the charging process and feed back to the MCU.

[0015] In a third aspect, an embodiment of the present disclosure provides a clothes drying machine, comprising a main unit and a clothes drying rod assembly connected to the main unit; the clothes drying rod assembly comprises the circuit for charging control as described in the second aspect and any embodiment thereof.

[0016] In a feasible embodiment, the host is provided with a first contact, and the charging input port includes a second contact provided on the drying rod assembly. When the first contact is in contact with the second contact, the power supply connected to the host charges the drying rod assembly when the circuit is turned on.

[0017] In a feasible embodiment, a control module is provided in the host, and the control module is wirelessly connected to the MCU included in the drying rod assembly, and is used to obtain battery-related information detected by the power management chip through the MCU.

[0018] The technical solutions provided by the embodiments of the present disclosure have the following beneficial effects:

[0019] In one aspect, an embodiment of the present disclosure provides a circuit for battery charging management, which includes a power management chip and a switch element for controlling the conduction and cutoff of the circuit; wherein the switch element is respectively connected to the input end of the power management chip and the charging input port of the electrical appliance, and the control port of the switch element is connected to the MCU of the electrical appliance; the IIC communication port of the power management chip is connected to the MCU, and the output end is connected to the battery charging port. In the implementation of the present disclosure, a power management chip and a switch unit are arranged between the charging input port and the battery charging port. The power management chip can dynamically adjust the charging parameters during the charging process, and the arrangement of the switch element can realize the control of the circuit on and off, avoid the generation of sparks at the moment when the charging input port contacts the external power supply, and improve the safety of battery charging. In addition, the circuit provided by the embodiment of the present disclosure provides a basis for the implementation of battery charging control, which can solve the problem in the prior art that the battery charging cannot be managed due to the lack of hardware arrangement.

[0020] In another aspect, embodiments of the present disclosure provide a circuit for charging control, comprising an MCU for an electrical appliance and the circuit for battery charging management provided in the above embodiments. On the one hand, the connection between the power management chip and the MCU enables the MCU to control the power management chip and dynamically adjust charging parameters. On the other hand, the connection between the switching element and the MCU enables the MCU to control the switching element's conduction and cutoff, thereby controlling the conduction and cutoff of the circuit for battery charging management, thereby avoiding sparks when contacting an external power source through the charging input port, thereby improving the safety of battery charging and the ease of control.

[0021] In another aspect, embodiments of the present disclosure further provide a clothes drying machine, wherein the clothes drying machine may include a main unit and a clothes drying rod assembly connected to the main unit; the clothes drying rod assembly may include the charging control circuit provided in the above-mentioned embodiments. The clothes drying machine provided in embodiments of the present disclosure is equipped with a charging control circuit, which can dynamically adjust charging parameters during the charging process of a battery independently arranged in the clothes drying rod assembly, and can also prevent sparks from being generated when the charging input port arranged in the clothes drying rod assembly comes into contact with an external power source, thereby improving the safety of the clothes drying machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for describing the embodiments of the present disclosure.

[0023] Figure 1 A block diagram of a circuit layout provided by an embodiment of the present disclosure;

[0024] Figure 2 A block diagram of another circuit component layout provided by an embodiment of the present disclosure;

[0025] Figure 3 A schematic diagram of a circuit for battery charging management provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions of the embodiments of the present disclosure.

[0027] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present disclosure mean that the corresponding features can be implemented as the features, elements and / or components shown, but do not exclude implementation as other features, elements, components and / or combinations thereof supported by the present technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or it can refer to the establishment of a connection relationship between the element and the other element through an intermediate element. In addition, the "connection" or "coupling" used here can include wireless connection or wireless coupling. The term "and / or" used here indicates at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0028] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0029] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the present disclosure and the technical effects produced by the technical solutions of the present disclosure. It should be noted that the following embodiments can refer to, draw on, or combine with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0030] The following combination Figures 1 to 3 The circuit for battery charging management provided in an embodiment of the present disclosure is described.

[0031] Specifically, the circuit for battery charging management may include a power management chip (Power Management Integrated Circuit, PMIC) and a switching element for controlling the conduction and cutoff of the circuit.

[0032] The switch element is connected to the input of the power management chip (IP2348) and the charging input port (BAT-IN) of the appliance, and the control port (BAT-GPIO-EN) of the switch element is connected to the microcontroller unit (MCU) of the appliance. The integrated circuit bus (IIC) communication port of the power management chip is connected to the MCU, and the output end is connected to the battery charging port (BAT).

[0033] Optionally, the charging input port of the electrical appliance can be a contact charging port, a type-C charging port, a USB charging port, a two-pin plug, a triangle plug, etc.

[0034] Optionally, a power management chip is an integrated circuit for managing power, in addition to Figure 3 In addition to the IP2348 chip shown, the power management chip can also be a battery charging and management IC, a MOSFET or IGBT switching function IC, a hot swap control IC, a pulse modulation or pulse amplitude modulation PWM / PFM control IC, etc. It can be used according to actual needs. The embodiments of the present disclosure do not limit the specific model or type of the power management chip. In one example, Figure 3 The IP2348 chip shown in the figure can have inputs such as control signal input pins, such as ACDET (AC power detection), which detects whether AC power is connected, and ACOK (AC OK), which indicates whether the AC power is connected normally and stable. Outputs can be pins directly related to the battery, such as BATDRV (battery driver), which can be used to control battery charging current or manage battery discharge. It should be understood that the aforementioned pins are used to illustrate the connection port of the power management chip, and do not limit the corresponding connection to a single pin.

[0035] Optionally, the switching element may be a MOS transistor (metal-oxide-semiconductor field-effect transistor), a relay, a switch, a transistor, etc. Taking a MOS transistor as an example, the switching element is described as follows: a MOS transistor is a voltage-controlled device whose on and off states can be determined by the voltage difference (VGS) between the gate (G) and the source (S).

[0036] For a P-type MOS transistor, when the gate voltage of the PMOS transistor is lower than the source voltage by a certain value (i.e., the gate-source voltage VGS is less than the negative turn-on voltage or negative threshold voltage -Vth), a P-type conductive channel is formed in the N-type substrate below the gate, allowing conductivity between the source and drain. This means that the MOS transistor is turned on, and the gate is in a low-level state relative to the source. When the gate-source voltage VGS is greater than the negative turn-on voltage -Vth, the conductive channel disappears, and conductivity between the source and drain is no longer possible. This means that the MOS transistor is turned off, and the gate is in a high-level state relative to the source.

[0037] Optionally, the control port of the switch element (such as the gate of the PMOS tube) can be connected to the first IO port of the MCU. When the MCU sets the IO port to a high level, the MOS tube is cut off; when the MCU sets the IO port to a low level, the MOS tube is turned on.

[0038] Optionally, the source and drain of the MOS tube are connected to the circuit respectively to meet different connection requirements. Figure 3As shown, in the MOS tube, the interface connected to the input end of the power management chip and the interface connected to the charging input port of the electrical appliance can be different.

[0039] For example, in a charging application, a control signal may be generated by an MCU, and the signal is divided by a resistor or directly connected to the gate of a MOS tube to control the on and off of the MOS tube.

[0040] Optionally, the control port of the switch element can be configured as either an input port or an output port. When configured as an input port, the control port can be used to receive signals from the MCU to control or change battery-related functions; for example, receiving an enable signal to turn on or off functions such as battery charging. When configured as an output port, the control port can be used to output control signals to control other circuits or components; for example, outputting an enable signal to turn on or off a battery-related functional module.

[0041] Optionally, a power management chip is responsible for controlling and managing various aspects of the power supply system, such as voltage stabilization, current control, charge status monitoring, and battery protection. The power management chip can receive instructions from the MCU or other control unit to set various charging parameters, such as charging current, charging voltage, and charging mode. Optionally, the power management chip can also monitor the battery's charging status in real time, including parameters such as battery voltage, current, and temperature, and feed this information back to the MCU or control unit for adjustment based on actual conditions.

[0042] Optionally, the IIC communication port of the power management chip can be connected to the second IO port of the MCU to receive instructions sent by the MCU and / or feedback battery-related information to the MCU. Exemplarily, the second IO port can include several, such as two.

[0043] Optionally, in the circuit for battery charging management provided by the embodiment of the present disclosure, in addition to the connection relationship between the power management chip and the switch element described above, the layout relationship of each element in the circuit can refer to Figure 3 , such as the layout of resistors, capacitors, inductors, diodes, etc.

[0044] In the embodiment of the present disclosure, by arranging switching elements, the control of the conductive path can be effectively achieved, and sparks can be prevented from being generated at the moment of contact. The improvement of the circuit can effectively improve the safety of the charging process and the user experience. For example, the switching element can be used to set the circuit to a cut-off state when there is no charging demand, and to a conducting state when the battery needs to be charged. In addition, the layout of the power management chip can make it possible to dynamically adjust the charging parameters during the battery charging process, thereby improving the controllability of the battery charging.

[0045] The following is a detailed description of the circuit for charging control provided in the embodiment of the present disclosure.

[0046] Specifically, the circuit for charging control includes the MCU of the appliance and the circuit for battery charging management provided in the above embodiment. The first IO port of the MCU is connected to the control port of the switching element, and the second IO port is connected to the IIC communication port of the power management chip.

[0047] In one example scenario, the MOS transistor's control port can be connected to the MCU's first IO port, and the power management chip's IIC communication port can be connected to the MCU's second IO port. By setting the IO port to a high level, the MCU controls the MOS transistor to cut off, closing the charging path to the rechargeable battery and preventing current from flowing into the battery. By setting the IO port to a low level, the MCU controls the MOS transistor to conduct, restoring the charging circuit path and allowing continued charging of the battery. The power management chip can receive instructions from the MCU via the IIC communication port and control the execution of the corresponding charging mode, such as trickle charging in specific scenarios.

[0048] Optionally, the charging control circuit also includes a temperature sensor located in the area surrounding the battery and connected to the MCU to monitor the battery temperature during charging and provide feedback to the MCU. Exemplarily, the temperature sensor can be an NTC thermistor, a semiconductor component whose resistance decreases rapidly as temperature rises. In applications, the temperature sensor can convert the detected battery temperature into an electrical signal (such as a change in resistance) and transmit it to the MCU. Based on the received temperature signal, the MCU controls the power management chip to adjust parameters such as the charging current and charging voltage, ensuring that the battery charges within a safe temperature range. In one application example, if the battery temperature is too high during charging, the temperature sensor will provide the MCU with feedback on the battery temperature. Based on the received battery temperature information, the MCU can control the power management chip to activate an overtemperature protection mechanism, such as reducing the charging power or stopping charging, to prevent battery damage from overheating or causing a safety incident. Specifically, when the MCU decides to stop charging, it can send a stop-charging instruction to the power management chip via a communication interface. Upon receiving the instruction, the power management chip can execute appropriate actions to stop charging. These actions may include shutting down circuit components related to the charging current and, through control logic, shutting off the MOSFET, thereby completely cutting off the charging current path.

[0049] In a feasible implementation, the circuit for charging control provided in the above embodiment may be arranged inside the electrical appliance.

[0050] For example, assuming the electrical appliance is an electric bicycle, a circuit for charging control can be installed inside the electric bicycle. On the one hand, the wireless communication connection between the mobile phone and the MCU allows the user to send charging control instructions to the MCU through the mobile phone. For example, to improve the safety of battery charging, the user chooses to use low power charging. When the MCU receives the instruction provided by the external device, it can send a control signal to the power management chip, causing the power management chip to control the reduction of charging power. On the other hand, the layout of the switching elements in the circuit can set the circuit to the truncated state during daily use and to the conductive state through the switching elements when the battery is charging, avoiding sparks when the charging input port contacts the external power supply.

[0051] The clothes drying machine provided in the embodiment of the present disclosure is described in detail below.

[0052] Specifically, the clothes drying machine may include a main unit and a clothes drying rod assembly connected to the main unit. The clothes drying rod assembly may include the electrical appliances provided in the above embodiments.

[0053] For example, the electrical appliance may refer to components arranged on the clothes-drying rod assembly, such as an electric telescopic rod arranged at the end of the clothes-drying rod, several sensors arranged on the clothes-drying rod, etc. The entire clothes-drying rod assembly may also be regarded as an electrical appliance.

[0054] Optionally, a first contact is provided on the host, and the charging input port includes a second contact provided on the drying rod assembly. When the first contact contacts the second contact, the drying rod assembly can be charged through the power supply connected to the host when the circuit is turned on.

[0055] Optionally, a control module is provided in the host, and the control module can be wirelessly connected to the MCU included in the drying rod assembly, and is used to obtain battery-related information detected by the power management chip through the MCU.

[0056] For example, when charging the independently arranged battery in the drying rod assembly through an external power source (such as AC power) connected to the host, the remaining power of the battery in the drying rod assembly can be obtained first to determine whether to charge. For example, when it is determined that the remaining power of the battery is less than a preset power threshold, the control module of the host can send a charging control instruction to the MCU of the drying rod assembly to control the MCU to set the first IO port to a low level to control the MOS tube to be turned on, so that the charging circuit is turned on, and the battery in the drying rod assembly is charged through the external power source connected to the host. In this example, the control module of the host can obtain battery-related information obtained by the power management chip through a wireless communication connection with the MCU of the drying rod assembly. The information can be actively obtained by the control module or actively sent by the power management chip to the control module through the MCU.

[0057] Optionally, the control module in the host may include a main control chip, a driver chip, a power supply circuit, a communication unit, a sensor unit, etc.

[0058] In the embodiment of the present disclosure, taking into account the problem of sparks generated at the moment of contact in contact charging, when the clothes dryer adopts contact charging technology to charge the drying rod assembly, a circuit for charging control is arranged. When charging is not performed on a daily basis, the circuit can be controlled by the switching element to be in the cut-off state. When charging is determined to be required, the circuit can be controlled by the switching element to be in the on state, thereby avoiding sparks generated at the moment of contact between the contacts on the main unit and the contacts on the drying rod assembly, improving the feasibility of independently arranging a power supply on the drying rod assembly, and effectively improving the safety of the use of the clothes dryer.

[0059] The terms "first," "second," "third," "fourth," "1," "2," and the like (if any) in the description and claims of the present disclosure and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present disclosure described herein can be practiced in an order other than that shown or described.

[0060] The above description is only part of the embodiments of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present disclosure. These improvements and modifications should also be regarded as within the scope of protection of the present disclosure.

Claims

1. A circuit for battery charging management, characterized in that: It includes a power management chip and a switching element for controlling the conduction and cutoff of the circuit; The switch element is connected to the input terminal of the power management chip and the charging input port of the electrical appliance respectively, and the control port of the switch element is connected to the microprocessor MCU of the electrical appliance; The integrated circuit bus IIC communication port of the power management chip is connected to the MCU, and the output end is connected to the battery charging port.

2. The circuit according to claim 1, wherein: The switch element includes a MOS tube, and a control port of the MOS tube is connected to the first IO port of the MCU; When the MCU sets the IO port to a high level, the MOS tube is cut off; When the MCU sets the IO port to a low level, the MOS tube is turned on.

3. The circuit according to claim 2, characterized in that The MOS transistor includes a P-type MOS transistor, and a gate of the P-type MOS transistor is connected to the first IO port of the MCU.

4. The circuit according to claim 1, wherein: The IIC communication port of the power management chip is connected to the second IO port of the MCU, and is used to receive instructions sent by the MCU and / or feed back battery-related information to the MCU.

5. A circuit for charging control, characterized in that: include: An MCU of an electrical appliance and a circuit for battery charging management according to any one of claims 1 to 4.

6. The circuit according to claim 5, characterized in that The first IO port of the MCU is connected to the control port of the switch element, and the second IO port is connected to the IIC communication port of the power management chip.

7. The circuit according to claim 5, characterized in that It also includes a temperature sensor arranged in the area around the battery and connected to the MCU, which is used to monitor the battery temperature during the charging process and feed back to the MCU.

8. A clothes drying machine, characterized in that: It comprises a host and a drying rod assembly connected to the host; the drying rod assembly comprises the circuit for charging control according to any one of claims 5 to 7.

9. The clothes drying machine according to claim 8, characterized in that: The host is provided with a first contact, and the charging input port includes a second contact provided on the drying rod assembly. When the first contact contacts the second contact, the power supply connected to the host charges the drying rod assembly when the circuit is turned on.

10. The clothes drying machine according to claim 8, characterized in that: The host is provided with a control module, which is wirelessly connected to the MCU included in the drying rod assembly and is used to obtain battery-related information detected by the power management chip through the MCU.

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