A general-purpose swimming pool robot multi-element power supply charging system

Abstract

The utility model discloses a general type swimming pool robot multi -element power supply charging system, include: external power supply interface, voltage detection module, charging current detection module, MCU control unit, dynamic regulation charging module, when external power supply access, voltage detection module discerns input voltage value, and will signal transmission to MCU control unit, controls and closes battery output, uses external power supply, and MCU control unit sets up optimal charging parameter through dynamic regulation charging module according to voltage value, and charging current detection module real -time feedback charging state simultaneously, forms closed -loop control, if external power supply disconnects, and MCU control unit detects EV / EA no input, immediately switches to battery power supply mode, and through the PWM adjustment and current monitoring of load driving module guarantee motor safe operation. Through integrated voltage detection, dynamic regulation charging module and ideal diode circuit, realize the extensive compatibility to external power supply.

Description

Technical Field

[0001] This utility model belongs to the field of pool robot charging technology, specifically relating to a general-purpose pool robot multi-power charging system. Background Technology

[0002] Most pool cleaning robots currently on the market are designed to be wireless, meaning they have a fixed or replaceable rechargeable battery. Before use, the battery needs to be charged until it reaches the minimum required level for operation. Once charged, the user can stop charging, start the robot, and place it in the pool. These robots require a dedicated charger, unlike ordinary adapters. This external charger is a dedicated battery charger with a complete charging control program. It can only charge the battery, and because different pool robots have different battery specifications, the compatible chargers are completely different. Different pool robot chargers are incompatible; for example, a charger for a pool robot using a 12.6V battery system cannot be used with a 21V battery system. Since the charger interfaces are the same, there is a risk of cross-contamination, which could potentially damage the pool robot. These usage precautions add a burden to users, as those who purchase multiple pool robots must remember the compatible charger for each.

[0003] Current pool cleaning robots generally operate wirelessly, relying on built-in fixed or replaceable rechargeable batteries. However, different robot models require different battery specifications, such as 12.6V and 21V systems, which necessitate dedicated chargers. Although these chargers share the same interface, they cannot be used interchangeably due to voltage incompatibility with the charging control program. Users with multiple robots must strictly distinguish and remember the corresponding charger for each. Misuse could damage the equipment, increasing the burden of use and posing a potential safety risk of cross-use.

[0004] Achieving universal compatibility for pool cleaning robot chargers, eliminating the risk of equipment damage caused by misuse of chargers, and reducing the complexity of use for users are urgent technical problems to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a general-purpose multi-power charging system for swimming pool robots, addressing the problems in the existing technology.

[0006] Therefore, the above-mentioned objective of this utility model is achieved through the following technical solution:

[0007] A general-purpose multi-power charging system for swimming pool robots includes: an external power interface, a voltage detection module, a charging current detection module, an MCU control unit, and a dynamic adjustment charging module;

[0008] When an external power source is connected, the voltage detection module identifies the input voltage value and transmits the signal to the MCU control unit, which then controls the battery output to be turned off and the external power source to be used. The MCU control unit sets the optimal charging parameters by dynamically adjusting the charging module based on the voltage value, while the charging current detection module provides real-time feedback on the charging status, forming a closed-loop control. If the external power source is disconnected, the MCU control unit detects no input to EV / EA, immediately switches to battery power mode, and ensures the safe operation of the motor through PWM adjustment and current monitoring of the load drive module.

[0009] While adopting the above technical solutions, this utility model may also adopt or combine the following technical solutions:

[0010] As a preferred technical solution of this utility model: the dynamic adjustment charging module includes a charging IC, which dynamically adjusts the charging current by detecting the input voltage.

[0011] As a preferred technical solution of this utility model: an ideal diode circuit is provided, which is composed of a MOSFET and peripheral circuits, and is used to reduce the voltage drop loss of the charging circuit.

[0012] As a preferred technical solution of this utility model: the MCU control unit controls the closing and opening of the relay or power switch according to the result of the voltage detection module, and connects the motor and the charging module respectively to ensure safe switching between power supply and charging.

[0013] As a preferred technical solution of this utility model: the MCU control unit determines whether the external power supply is effective based on the external power supply detection circuit, and uses the external power supply first when the external power supply is effective, and automatically switches to battery power supply when the external power supply is ineffective by switching control circuit.

[0014] As a preferred embodiment of this utility model, the charging management module includes:

[0015] The charging enable signal controls the start and stop of the charging module;

[0016] The charging current feedback circuit adjusts the charging parameters in real time to prevent overcharging or undercharging.

[0017] As a preferred embodiment of this utility model, the load driving module includes:

[0018] PWM speed control circuit is used to adjust the motor power;

[0019] The current monitoring circuit is used to detect the load current in real time and trigger the protection mechanism when overloaded.

[0020] As a preferred technical solution of this utility model: the system supports multiple input power specifications, including but not limited to 12.6V, 21V or other voltage level power adapters, and automatically identifies and matches the corresponding charging parameters.

[0021] As a preferred technical solution of this utility model: the MCU control unit interacts with the charging IC through the communication interface I2C or UART to realize the dynamic adjustment of charging parameters.

[0022] Compared with existing technologies, this utility model's universal multi-power charging system for swimming pool robots has the following advantages: By innovatively integrating a voltage detection module, a dynamic adjustment charging module, and an ideal diode circuit, this universal multi-power charging system for swimming pool robots achieves three core advantages: First, the system has broad power compatibility, automatically identifying and adapting to different input power specifications, providing safe charging for swimming pool robots with various battery specifications as long as the basic power requirements are met; second, employing intelligent dynamic adjustment technology, when low-power input is detected, the system automatically reduces the charging current to match the power output capacity, achieving full charging by extending the charging time while ensuring equipment safety; finally, by introducing a high-efficiency ideal diode circuit, the voltage drop loss in the charging circuit and the overall power consumption of the system are significantly reduced, improving charging efficiency by more than 15%. This integrated design is particularly suitable for hybrid swimming pool robots that require frequent switching of power supply modes, achieving optimal energy utilization while ensuring charging safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall connection of the charging system of this utility model, showing the external power interface, voltage detection module and relay control logic.

[0024] Figure 2 This is a circuit diagram of the internal charging module, showing key components such as the charging IC, ideal diode, and power inductor. Detailed Implementation

[0025] The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0026] This utility model discloses a universal multi-power charging system for swimming pool robots, comprising: an external power interface, a voltage detection module, a charging current detection module, an MCU control unit, and a dynamic adjustment charging module.

[0027] When an external power source is connected, the voltage detection module identifies the input voltage value and transmits the signal to the MCU control unit, which then controls the battery output to be turned off and the external power source to be used. The MCU control unit sets the optimal charging parameters by dynamically adjusting the charging module based on the voltage value, while the charging current detection module provides real-time feedback on the charging status, forming a closed-loop control. If the external power source is disconnected, the MCU control unit detects no input to EV / EA, immediately switches to battery power mode, and ensures the safe operation of the motor through PWM adjustment and current monitoring of the load drive module.

[0028] The dynamic adjustment charging module includes a charging IC, which dynamically adjusts the charging current by detecting the input voltage.

[0029] A diode circuit is provided, which consists of a MOSFET and peripheral circuitry, and is used to reduce voltage drop losses in the charging circuit.

[0030] The MCU control unit controls the closing and opening of relays or power switches based on the results of the voltage detection module, thereby connecting the motor and the charging module respectively, ensuring safe switching between power supply and charging.

[0031] The MCU control unit determines whether the external power supply is valid based on the external power supply detection circuit, and uses the switching control circuit to prioritize the use of external power supply when it is valid, and automatically switches to battery power supply when the external power supply is invalid.

[0032] The charging management module includes:

[0033] The charging enable signal controls the start and stop of the charging module;

[0034] The charging current feedback circuit adjusts the charging parameters in real time to prevent overcharging or undercharging.

[0035] As a preferred embodiment of this utility model, the load driving module includes:

[0036] PWM speed control circuit is used to adjust the motor power;

[0037] The current monitoring circuit is used to detect the load current in real time and trigger the protection mechanism when overloaded.

[0038] The system supports multiple input power specifications, including but not limited to 12.6V, 21V or other voltage level power adapters, and automatically identifies and matches the corresponding charging parameters.

[0039] The MCU control unit interacts with the charging IC through the communication interface I2C or UART to achieve dynamic adjustment of charging parameters.

[0040] The external power interface is connected to an external charging power source;

[0041] The voltage detection module detects the voltage value of the external input power supply;

[0042] The charging current detection module monitors the charging current in real time.

[0043] The MCU control unit dynamically adjusts the charging parameters based on the signals from the voltage detection module and the charging current detection module.

[0044] The charging module dynamically adjusts the charging voltage and current according to the instructions of the MCU control unit;

[0045] The MCU control unit controls the system to prioritize external power supply when it is available, and to switch to battery power when external power supply is unavailable.

[0046] The charging management module initiates the charging process and controls the charging current when an external power source is connected.

[0047] The load drive module adjusts the motor power according to system requirements and monitors the load current to prevent overload.

[0048] This utility model discloses a universal multi-power charging system for swimming pool robots. By integrating voltage detection, dynamic adjustment charging modules, and an ideal diode circuit, it achieves broad compatibility with external power sources. The system can automatically adapt to different power inputs, ensuring safe charging while reducing energy consumption. It is suitable for various hybrid power supply swimming pool robots and has the following characteristics:

[0049] Wide compatibility: Supports multiple input power sources, allowing charging of pool robots with different battery specifications as long as the power requirements are met.

[0050] Dynamic adjustment: Automatically reduces charging current to adapt to low-power sources, extending charging time while preventing device damage.

[0051] High efficiency and energy saving: Ideal diode circuits reduce voltage drop and system power consumption, and improve charging efficiency.

[0052] Example 1

[0053] like Figures 1-2 As shown, this utility model discloses a universal multi-power charging system for swimming pool robots, comprising the following:

[0054] Power input module: External power interface (EV / EA): Connects to an external power supply box via a waterproof floating cable, supporting a wide voltage input of 12-24V;

[0055] Battery interface: Connect to the built-in lithium battery pack (e.g., 48V / 20Ah). The interface is equipped with a reverse connection protection circuit.

[0056] MCU control unit (D1-D5): Uses STM32F103 series chip, integrating ADC sampling and PWM output functions;

[0057] Voltage detection module: The input voltage is proportionally reduced to the range that the MCU can detect (0-3.3V) through a voltage divider resistor network (R1=10kΩ, R2=2kΩ).

[0058] Current sensing module (CA): Uses INA219 current sensor with an accuracy of ±1%, and communicates with MCU via I²C interface.

[0059] Dynamically adjust the charging module:

[0060] Charging IC (A): TI's BQ25601 is selected, which supports 4.5-24V input and a maximum charging current of 3A;

[0061] Ideal diode circuit: composed of MOSFET (SI2302) and operational amplifier (LM358), voltage drop < 0.1V;

[0062] Power inductor (D): 47μH high-frequency inductor used for buck circuit step-down.

[0063] Execution module

[0064] Relays (BK1 / BK2 / EK1 / EK2): Omron G5V-2 series, contact capacity 10A;

[0065] Motor drive: The MOSFET bridge is driven by IR2104, and the output PWM_Motor signal is used to control the brushless motor.

[0066] This utility model discloses a general-purpose multi-power charging system for swimming pool robots, which is a composite power management system that integrates multi-attribute power supply battery power, external power supply and internal charging module, and realizes the switching and management of power paths through the control system.

[0067] Power supply mode: including battery power supply mode: BK1 is closed, BK2 is open, and the battery supplies power to the system through BA.

[0068] External power supply mode: BK2 is closed, BK1 is open, external power is supplied through EV / EA, and C4 may charge the battery at the same time.

[0069] Charging mode: When an external power source is connected, D5 controls EK2 to start the C4 module, and the charging current (Ichg) is set by the charging IC (e.g., 0.5C).

[0070] Battery over-discharge: When D1 detects that Vbat is below the threshold, it cuts off BK1, switches to external power supply, or shuts down the device.

[0071] External overvoltage: When D2 detects that Vext exceeds the limit, it disconnects BK2 and triggers the protection circuit.

[0072] This invention relates to a general-purpose multi-power charging system for swimming pool robots, employing an innovative hierarchical control architecture for efficient energy management. The system constructs a complete power supply network through a dual power input channel design (battery channel BA interface and external power channel EV / EA interface), with the external power channel using a waterproof floating cable for high-power supply. The control center consists of distributed MCU modules (D series), integrating three core functions: power path switching, charge / discharge management, and status monitoring. A millisecond-level fast response algorithm enables seamless switching between external power priority and battery power. The system possesses intelligent dynamic energy allocation capabilities, adjusting power allocation strategies in real time based on load demand and power status: when external power is connected, the battery path is automatically disconnected and the charging module is activated; when external power is disconnected, it immediately switches to battery power and dynamically adjusts the output power through a current sampling circuit. The charging management module supports configurable parameters, allowing setting of charging parameters via the SET pin and feedback of charging status via the STAT pin. Combined with an ideal diode circuit, this improves charging efficiency to 92%. This invention provides a charging system that achieves real-time monitoring and rapid response for power switching, charging management, and load-driven operation through multi-module collaboration.

[0073] The above specific embodiments are used to explain and illustrate the present utility model, and are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made to the present utility model within the spirit and protection scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A universal multi-source power charging system for swimming pool robots, characterized in that: include: External power supply interface, voltage detection module, charging current detection module, MCU control unit, and dynamic adjustment charging module; When an external power source is connected, the voltage detection module identifies the input voltage value and transmits the signal to the MCU control unit, which then controls the battery output to be turned off and the external power source to be used. The MCU control unit sets the optimal charging parameters by dynamically adjusting the charging module based on the voltage value, while the charging current detection module provides real-time feedback on the charging status, forming a closed-loop control. If the external power source is disconnected, the MCU control unit detects no input to EV / EA, immediately switches to battery power mode, and ensures the safe operation of the motor through PWM adjustment and current monitoring of the load drive module.

2. The universal pool robot multi-power charging system according to claim 1, characterized in that: The dynamic adjustment charging module includes a charging IC, which dynamically adjusts the charging current by detecting the input voltage.

3. The universal pool robot multi-power charging system according to claim 1, characterized in that: An ideal diode circuit is provided, which consists of a MOSFET and peripheral circuitry, and is used to reduce voltage drop losses in the charging circuit.

4. The universal pool robot multi-power charging system according to claim 1, characterized in that: The MCU control unit controls the closing and opening of relays or power switches based on the results of the voltage detection module, thereby connecting the motor and the charging module respectively, ensuring safe switching between power supply and charging.

5. The universal pool robot multi-power charging system according to claim 1, characterized in that: The MCU control unit determines whether the external power supply is valid based on the external power supply detection circuit, and uses the switching control circuit to prioritize the use of external power supply when it is valid, and automatically switches to battery power supply when the external power supply is invalid.

6. The universal pool robot multi-power charging system according to claim 1, characterized in that: The charging management module includes: a charging enable signal to control the start and stop of the charging module; The charging current feedback circuit adjusts the charging parameters in real time to prevent overcharging or undercharging.

7. The universal pool robot multi-power charging system according to claim 1, characterized in that: The load drive module includes: a PWM speed control circuit for adjusting motor power; The current monitoring circuit is used to detect the load current in real time and trigger the protection mechanism when overloaded.

8. The universal pool robot multi-power charging system according to claim 1, characterized in that: The system supports multiple input power specifications, including but not limited to 12.6V, 21V or other voltage level power adapters, and automatically identifies and matches the corresponding charging parameters.

9. The charging system according to claim 1, characterized in that: The MCU control unit interacts with the charging IC through the communication interface I2C or UART to achieve dynamic adjustment of charging parameters.

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