A protection charging system of a robot charging pile

Abstract

The utility model provides a kind of protection charging system of robot charging pile, it is related to robot charging technical field, system includes charging end, signal sampling end, power supply unit, monitoring unit, main control unit. By introducing monitoring unit detection robot ontology and the on-off between monitoring contact on charging pile, generating on signal or disconnect signal and send to main control unit, main control unit controls the power supply unit in charging pile and powers on output charging voltage and current according to on signal or disconnect signal and charges or disconnects power supply and stops charging, so that robot can automatically turn off power after leaving charging pile, avoid the charging electrode piece of charging pile long time conduction, even if human press charging contact on charging pile also cannot trigger power supply, can prevent electric shock, guarantee the safety of robot charging pile, especially suitable for domestic robot, can avoid domestic child mis-trigger or naughty active trigger and lead to electric shock.

Description

Technical Field

[0001] This utility model relates to the field of robot charging technology, and in particular to a protective charging system for robot charging stations. Background Technology

[0002] With the increasing popularity of home service robots, robot charging has become a major concern for users. Currently, robot charging stations generally use contact electrode power supply solutions. For example, a utility model patent with publication number "CN120222554A" entitled "Robot Charging Management Method, Device, Computer Equipment, and Storage Medium" discloses a robot charging management scheme. Its core process includes: periodically monitoring the battery level; when the level drops to a preset threshold, selecting a target charging station based on distance information and navigating to dock; initiating charging after successful docking and continuously monitoring the battery level and charging / discharging status; if an interruption occurs during charging (e.g., not fully charged but in a discharging state), recalculating the optimal charging station location and continuing charging until the battery is fully charged. This utility model improves the rationality and efficiency of the robot charging process by dynamically adjusting the charging strategy. However, this technology relies on the robot pressing contact electrodes to turn on the power, posing a risk of electric shock if a person or animal accidentally presses the contacts, causing the power to turn on.

[0003] Another utility model patent, with publication number "CN222966737U" and titled "Automatic Switch Control Device, Charging Pile, and Robot System," proposes an automatic switch control device, a charging pile, and a robot system. Its core structure comprises two main modules: 1) an electrode detection circuit, located below the metal electrodes of the charging pile, which uses detection components on a first circuit board to determine if a device to be charged is connected and triggers power supply; 2) a power soft-start switch circuit, linked with the electrode detection circuit to achieve gradual conduction of the charging circuit. This design effectively solves the problem of the charging electrodes being charged for extended periods, and the soft-start mechanism avoids sparks generated by instantaneous discharge, improving the safety and reliability of the charging process. However, this utility model also relies on a robot pressing the contact electrodes to turn on the power for charging, which carries the risk of electric shock due to accidental pressing of the contacts by personnel or animals.

[0004] Therefore, the current robot charging stations generally adopt a contact electrode power supply solution, which poses a safety hazard due to the long-term conductivity of the charging electrode. Utility Model Content

[0005] To address the safety hazards associated with existing contact electrode power supply solutions due to prolonged conductivity of the charging electrodes, this invention aims to provide a protective charging system for robot charging stations. This system automatically shuts off the power after the robot leaves the charging station, preventing prolonged conductivity of the charging electrodes. Even if the charging contacts on the charging station are pressed manually, the power supply will not be triggered, thus preventing electric shock and ensuring the safety of the robot charging station.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A protective charging system for a robot charging station includes: a charging end, comprising a second charging contact group disposed on the charging station body, which can make or break contact with a first charging contact group disposed on the robot body and connected to the robot's energy storage battery according to the robot sitting in or leaving the charging station, for providing charging input to the robot's energy storage battery; a signal sampling end, comprising a second monitoring contact group disposed on the charging station body, which can make or break contact with the first monitoring contact group disposed on the robot body according to the robot sitting in or leaving the charging station; and a power supply unit, connected to the second charging contact group, for converting external power input according to the power-on command of the main control unit. The second charging contact group outputs charging voltage and current to the first charging contact group to charge the robot's energy storage battery; on the other hand, it is used to disconnect the power supply according to the power-off command of the main control unit; the monitoring unit, connected to the second monitoring contact group, is used to detect whether the first monitoring contact group and the second monitoring contact group are in contact and conduction, and generate a conduction signal or a disconnection signal to send to the main control unit; the main control unit is connected to both the monitoring unit and the power supply unit, and on the one hand, it is used to send a power-on command to the power supply unit according to the conduction signal sent by the monitoring unit, and control the power supply unit to output charging voltage and current; on the other hand, it is used to send a power-off command to the power supply unit according to the disconnection signal sent by the monitoring unit, and control the power supply unit to disconnect the power supply.

[0008] To enable a single charging station to charge multiple robot models, this utility model provides a preferred solution. The first charging contact group includes a first positive charging contact and a first negative charging contact; the second charging contact group includes a second positive charging contact and a second negative charging contact; the first monitoring contact group includes a first positive monitoring contact and a first negative monitoring contact; the second monitoring contact group includes a second positive monitoring contact and a second negative monitoring contact; a first resistor, which is the internal resistance of the robot, is also connected between the first positive monitoring contact and the first negative monitoring contact, and the resistance value of the first resistor is different for different robot models.

[0009] Furthermore, the monitoring unit is also used to detect the first resistance and send it to the main control unit; the main control unit calculates the resistance value based on the detected first resistance, matches the corresponding robot model and the charging voltage and current required by the robot model, and sends a power-on command with the corresponding charging voltage and current information to the power supply unit to control the power supply unit to power on according to the command and reach the charging voltage and current required by the robot until the robot's energy storage battery is fully charged or reaches the set value, thereby realizing that a single charging pile can charge multiple models of robots.

[0010] To accurately charge multiple robot models with a single charging station, this utility model provides a preferred solution. The main control unit adopts a single-chip microcomputer (MCU), which is equipped with an ADC pin. The monitoring unit includes: a VCC power supply terminal, which provides the power required for monitoring and is connected to the second positive monitoring contact; a GND ground terminal, which is connected to the second negative monitoring contact; and a current-limiting voltage divider module, which is connected between the VCC power supply terminal and the second positive monitoring contact, forming a voltage divider network with the first resistor inside the robot, and outputting a voltage signal to the ADC pin of the MCU.

[0011] To further enhance charging protection performance, the monitoring unit also includes an electrostatic discharge protection module, which is connected in parallel to the second positive monitoring contact and the second negative monitoring contact to discharge static electricity.

[0012] To further enhance charging protection performance, the monitoring unit also includes a reverse connection protection module, which is located between the second positive monitoring contact and the current limiting voltage divider module to block the current path when the external power supply is reverse connected.

[0013] To better enable a single charging station to charge multiple robot models, this utility model provides a preferred solution. The power supply unit includes a power conversion module, which is controlled by the main control unit and dynamically adjusts the external power input into the charging voltage and current required by the robot according to the instructions of the main control unit.

[0014] To further avoid sparks, this invention provides a preferred solution where the power conversion module uses a DC-DC circuit. The DC-DC circuit can provide different voltages and currents, and can also turn off the power and slowly start the power.

[0015] To ensure charging stability, this utility model provides a preferred solution, wherein the power supply unit further includes a filter module, which is connected in parallel to both ends of the second positive charging contact and the second negative charging contact.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This utility model provides a protective charging system for robot charging stations. By introducing a monitoring unit to detect the continuity between the robot body and the monitoring contacts on the charging station, a conduction signal or a disconnection signal is generated and sent to the main control unit. The main control unit controls the power supply unit in the charging station to power on and output charging voltage and current to charge the robot's energy storage battery or disconnect the power supply to stop charging, so that the power can be automatically turned off after the robot leaves the charging station, avoiding the charging plates of the charging station from conducting electricity for a long time. Even if the charging contacts on the charging station are pressed manually, the power supply will not be triggered, thus preventing electric shock and ensuring the safety of the robot charging station. It is especially suitable for home robots, and can prevent children from accidentally triggering or mischievously triggering the charging station, which could lead to electric shock. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a protective charging system for a robot charging station provided in Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of a protective charging system for a robot charging station provided in Embodiment 2 of this utility model;

[0021] Figure 3 This is a circuit diagram of a protective charging system for a robot charging station provided in Embodiment 2 of this utility model.

[0022] Reference numerals: Robot body 100, first charging contact group 110, first negative charging contact 111, first positive charging contact 112, first monitoring contact group 120, first positive monitoring contact 121, first negative monitoring contact 122; charging pile body 200, second charging contact group 210, second negative charging contact 211, second positive charging contact 212; second monitoring contact group 220, second positive monitoring contact 221, second negative monitoring contact 222; power supply unit 230, external power input 231, power conversion module 232, filtering module 233; monitoring unit 240, VCC power supply terminal 241, current limiting and voltage dividing module 242, electrostatic protection module 243, reverse connection protection module 244, GND ground terminal 246; main control unit 250. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please refer to Figure 1 This embodiment provides a protective charging system for a robot charging station, which mainly consists of the following parts:

[0026] The charging end includes a second charging contact group 210 disposed on the charging pile body 200, which can make or break contact with the first charging contact group 110 disposed on the robot body 100 and connected to the robot's energy storage battery according to whether the robot sits on or leaves the charging pile, so as to provide charging input for the robot's energy storage battery.

[0027] The signal sampling end includes a second monitoring contact group 220 set on the charging pile body 200, which can make contact with or disconnect from the first monitoring contact group 120 set on the robot body 100 according to whether the robot sits on or leaves the charging pile.

[0028] The power supply unit 230 is connected to the second charging contact group 210. On the one hand, it is used to convert the external power input 231 according to the power-on command of the main control unit 250 and output the charging voltage and current of the second charging contact group 210 to charge the first charging contact group 110 to charge the robot's energy storage battery. On the other hand, it is used to disconnect the power supply according to the power-off command of the main control unit 250. The power supply unit 230 includes: a power conversion module 232, which is controlled by the main control unit 250 and dynamically adjusts the external power input 231 into the charging voltage and current required by the robot according to the command of the main control unit 250.

[0029] The monitoring unit 240 is connected to the second monitoring contact group 220 and is used to detect whether the first monitoring contact group 120 and the second monitoring contact group 220 are in contact and conduction, and generate a conduction signal or disconnection signal to be sent to the main control unit 250.

[0030] The main control unit 250 is connected to the monitoring unit 240 and the power supply unit 230 respectively. On the one hand, it is used to send a power-on command to the power supply unit 230 according to the conduction signal sent by the monitoring unit 240, and control the power supply unit 230 to output charging voltage and current. On the other hand, it is used to send a power-off command to the power supply unit 230 according to the disconnection signal sent by the monitoring unit 240, and control the power supply unit 230 to disconnect the power supply.

[0031] This embodiment provides a protective charging system for a robot charging station. By introducing a monitoring unit 240 to detect the continuity between the robot body 100 and the monitoring contacts on the charging station, a conduction signal or a disconnection signal is generated and sent to the main control unit 250. The main control unit 250 controls the power supply unit 230 in the charging station to power on and output charging voltage and current to charge the robot's energy storage battery or disconnect the power supply to stop charging, so that the power can be automatically turned off after the robot leaves the charging station, avoiding the charging plates of the charging station from conducting electricity for a long time. Even if the charging contacts on the charging station are pressed manually, the power supply will not be triggered, thus preventing electric shock and ensuring the safety of the robot charging station. It is especially suitable for home robots, and can prevent children at home from accidentally triggering or mischievously triggering the charging station, which could lead to electric shock.

[0032] Example 2

[0033] Please refer to Figure 2 Based on Embodiment 1, this embodiment provides a more preferred protective charging system for robot charging stations, mainly adding the following components: A first charging contact group 110 includes a first positive charging contact 112 and a first negative charging contact 111; a second charging contact group includes a second positive charging contact 212 and a second negative charging contact; a first monitoring contact group 120 includes a first positive monitoring contact 121 and a first negative monitoring contact 122; a second monitoring contact group 220 includes a second positive monitoring contact 221 and a second negative monitoring contact 222; a first resistor R1 is also connected between the first positive monitoring contact 121 and the first negative monitoring contact 122, which is an internal resistor of the robot. The resistance value of the first resistor R1 is different for different robot models, and each model has a unique resistance value. Preferably, in this embodiment, the main control unit 250 uses a single-chip microcomputer (MCU), which has an ADC pin. The ADC pin converts electrical signals into digital signals, which are then processed and analyzed by the MCU. The main control unit 250 controls the power conversion module 232 to provide the corresponding charging voltage and current via IIC signals. The monitoring unit 240 is also used to detect the first resistor R1 and send it to the ADC pin. The main control unit 250 calculates the resistance value based on the detected first resistor R1, matches the corresponding robot model and the charging voltage and current required by that robot model, and sends a power-on command with the corresponding charging voltage and current information to the power supply unit 230 to control the power supply unit 230 to power on according to the command and reach the charging voltage and current required by the robot until the robot's energy storage battery is fully charged or reaches the set value.

[0034] The monitoring unit 240 mainly consists of the following modules: an electrostatic discharge protection module 243, connected in parallel across the second positive monitoring contact 221 and the second negative monitoring contact 222, used to discharge static electricity; a reverse connection protection module 244, located between the second positive monitoring contact 221 and the current limiting voltage divider module 242, used to block the current path when the external power supply is reversed; a VCC power supply terminal 241, providing the power required for monitoring, connected to the second positive monitoring contact 221; a GND ground terminal 246, connected to the second negative monitoring contact 222; and a current limiting voltage divider module 242, connected between the VCC power supply terminal 241 and the second positive monitoring contact 221, forming a voltage divider network with the first resistor R1 inside the robot, outputting a voltage signal to the ADC pin of the microcontroller MCU. More specifically and preferably, the electrostatic discharge (ESD) protection module 243 uses a silicon controlled rectifier (SCR1), with its anode connected to the second positive monitoring contact 221 and its cathode connected to the second negative monitoring contact 222 and grounded (GND) to discharge static electricity and prevent high voltage from breaking down the circuit. The reverse connection protection module 244 uses a diode D2, connected in reverse series in the monitoring contact circuit; that is, its anode is connected to the second resistor R2 and its cathode is connected to the second monitoring contact to block the current path when the external power supply is reversed.

[0035] The power supply unit 230 consists of the following modules: a power conversion module 232, controlled by an MCU, which dynamically adjusts the external power input 231 into the charging voltage and current required by the robot according to the MCU's instructions; a filter module 233, connected in parallel across the second positive charging contact 212 and the second negative charging contact 211, used to filter out power ripple and ensure charging stability. More specifically and preferably, the power conversion module 232 uses a DC-DC circuit. The filter module 233 uses a capacitor C1, connected in parallel across the second positive charging contact 212 and the second negative charging contact 211.

[0036] Please refer to Figure 3 More specifically, the robot body 100 has four electrode contacts: contact 1-1 and contact 2-1 (that is... Figure 1 and Figure 2 The first negative charging contact 111 and the first positive charging contact 112 are charging electrodes. Different robot models require different charging voltages and currents; contacts 3-1 and 4-1 (that is...) Figure 1 and Figure 2 The first positive monitoring contact 121 and the first negative monitoring contact 122 are connected to the first resistor R1 inside the robot. The resistance value of the first resistor R1 is different for different robot models. Each resistance value corresponds to the relevant model and the voltage and current required for charging.

[0037] The charging pile body 200 has 4 electrode contacts: contact 1-2 and contact 2-2 (that is... Figure 2The second negative charging contact 211 and the second positive charging contact 212 are external charging electrodes, controlled by the internal DC-DC circuit. They can provide different voltages and currents, and can also turn off the power supply and slowly start the power supply. Capacitor C1 acts as a filter. Contacts 3-2 and 4-2 (i.e. Figure 2 The second positive monitoring contact 221 and the second negative monitoring contact 222 are used to monitor the robot model. SCR1 provides electrostatic discharge protection. Diode D2 prevents external power supply from entering. VCC provides the power required for monitoring, supplied by the onboard 3.3V power supply. Resistor R2 serves as a current limiter and voltage divider. The main function of the microcontroller (MCU) is to control the infrared signal to guide the robot to the charging station. Simultaneously, one of the MCU's ADC pins is connected to contacts 3-2 and 4-2, actively monitoring whether the robot is seated and identifying the robot model. The MCU controls the DC-DC circuit to provide the corresponding voltage and current signals via an IIC signal.

[0038] To further explain the protection principle of the robot charging station's protective charging system in this embodiment, the working principle will be explained below in conjunction with the specific states of the robot and the charging station:

[0039] When the charging station is idle: Contacts 1-2 and 2-2 have no power or current. Contacts 3-2 and 4-2 continuously monitor whether a robot has entered the station.

[0040] When the robot is seated: Initially, contacts 1-2 and 2-2 have no power or current, preventing sparking. Contacts 3-2 and 4-2 monitor whether the robot is seated. Once the robot has been stably seated for a specified time, based on the detected voltage and the relationship table written at the factory, the robot model and the required voltage and current for charging are confirmed. The microcontroller (MCU) controls the DC-DC circuit to slowly power on the robot via the IIC signal, gradually reaching the required voltage and current until the robot battery is fully charged.

[0041] When the robot leaves: Contacts 3-2 and 4-2 detect the robot's departure, and the microcontroller (MCU) controls the DC-DC circuit to disconnect the power supply via the IIC signal, thus de-energizing contacts 1-2 and 2-2. Contacts 3-2 and 4-2 continuously monitor whether the robot has entered its seat.

[0042] To further explain the protection principle of the protective charging system of the robot charging station in this embodiment, the signal flow and working logic are explained below:

[0043] (1) Charging preparation stage

[0044] The robot contact 1-1 / 2-1 is in physical contact with the charging pile contact 1-2 / 2-2, but the DC-DC circuit is not activated and there is no voltage on the electrode.

[0045] The robot contact 3-1 / 4-1 contacts the charging pile contact 3-2 / 4-2, forming an R1-R2 voltage divider circuit. The MCU reads the voltage signal through the ADC pin to identify the robot model and charging requirements.

[0046] (2) Slow power-on and charging

[0047] The MCU controls the DC-DC circuit through the IIC signal to gradually output the target voltage / current to contacts 1-2 / 2-2, and capacitor C1 filters out the startup ripple.

[0048] During charging, the MCU continuously monitors the battery status and dynamically adjusts the output parameters.

[0049] (3) Charging complete and disconnection

[0050] Once the battery is fully charged, the MCU controls the DC-DC circuit to stop outputting, and the voltage at contacts 1-2 / 2-2 drops to 0V.

[0051] When the robot leaves its seat, contacts 3-1 / 4-1 disconnect from the charging station, and the MCU detects that the voltage has returned to zero, confirming the robot's departure status.

[0052] This embodiment provides a protective charging system for robot charging stations. Firstly, it automatically shuts off the power after the robot leaves the charging station, preventing prolonged conductivity of the charging terminals. Even if the charging contacts on the charging station are pressed manually, it will not trigger power supply, preventing electric shock and ensuring the safety of the robot charging station. Secondly, by using a first resistor R1 (an internal robot resistor, with different values ​​for different robot models) between the first positive and first negative monitoring contacts, the MCU calculates the resistance value based on the detected R1, matching the corresponding robot model and the required charging voltage and current. Even if the robot is completely powered off, it can still be charged by recognizing the robot model and providing the necessary voltage and current. Furthermore, a single charging station can identify the robot model and provide different voltages and currents, solving the problem that charging stations can only provide a single voltage and power supply, and can only charge one type of robot. Finally, this embodiment enables the charging circuit to conduct slowly to avoid instantaneous discharge sparks, further improving charging safety.

[0053] The safety protection mechanism of this utility model is as follows:

[0054] Electrode power-off mechanism: After the robot leaves its seat, the MCU immediately shuts off the DC-DC circuit, so even if the electrode is pressed manually, a circuit cannot be formed, eliminating the risk of electric shock.

[0055] Spark-proof start-up: The output voltage of the DCDC circuit gradually increases from 0V, and with the filtering of capacitor C1, the instantaneous spark at the contact of the electrodes is eliminated.

[0056] Reverse connection protection: Diode D2 is cut off when the monitoring contact is reversed, protecting the MCU and voltage divider circuit.

[0057] The protective charging system of this robot charging station achieves model-adaptive charging, active safety protection, and spark-free starting through the coordinated design of physical contact connection and signal control, providing an efficient and reliable charging solution for home service robots.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, the above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A protective charging system for a robot charging station, characterized in that, include: The charging end includes a second charging contact group disposed on the charging pile body, which can make or break contact with the first charging contact group disposed on the robot body and connected to the robot's energy storage battery according to whether the robot sits on or leaves the charging pile, so as to provide charging input for the robot's energy storage battery. The signal sampling end includes a second monitoring contact group set on the charging pile body, which can make contact with or disconnect from the first monitoring contact group set on the robot body according to whether the robot sits on or leaves the charging pile. The power supply unit is connected to the second charging contact group. On the one hand, it is used to convert the external power input according to the power-on command of the main control unit and output the charging voltage and current to the first charging contact group to charge the robot's energy storage battery; on the other hand, it is used to disconnect the power supply according to the power-off command of the main control unit. The monitoring unit is connected to the second monitoring contact group and is used to detect whether the first monitoring contact group and the second monitoring contact group are in contact and conducting, and to generate a conduction signal or a disconnection signal to be sent to the main control unit. The main control unit is connected to both the monitoring unit and the power supply unit. On one hand, it sends a power-on command to the power supply unit based on the conduction signal sent by the monitoring unit, controlling the power supply unit to output charging voltage and current. On the other hand, it sends a power-off command to the power supply unit based on the disconnection signal sent by the monitoring unit, controlling the power supply unit to disconnect the power supply.

2. The protective charging system for robot charging stations according to claim 1, characterized in that, The first charging contact group includes a first positive charging contact and a first negative charging contact; the second charging contact group includes a second positive charging contact and a second negative charging contact; the first monitoring contact group includes a first positive monitoring contact and a first negative monitoring contact; the second monitoring contact group includes a second positive monitoring contact and a second negative monitoring contact; a first resistor is also connected between the first positive monitoring contact and the first negative monitoring contact, which is the internal resistance of the robot, and the resistance value of the first resistor is different for different robot models.

3. The protective charging system for robot charging stations according to claim 2, characterized in that, The monitoring unit is also used to detect the first resistance and send it to the main control unit. The main control unit calculates the resistance value based on the detected first resistance, matches the corresponding robot model and the charging voltage and current required by the robot model, and sends a power-on command with the corresponding charging voltage and current information to the power supply unit to control the power supply unit to power on according to the command and reach the charging voltage and current required by the robot until the robot's energy storage battery is fully charged or reaches the set value.

4. The protective charging system for a robot charging station according to claim 1, 2, or 3, characterized in that, The main control unit adopts a single-chip microcomputer (MCU), which is equipped with an ADC pin. The monitoring unit includes: a VCC power supply terminal, which provides the power required for monitoring and is connected to the second positive monitoring contact; a GND ground terminal, which is connected to the second negative monitoring contact; and a current limiting and voltage divider module, which is connected between the VCC power supply terminal and the second positive monitoring contact, forming a voltage divider network with the first resistor inside the robot, and outputting a voltage signal to the ADC pin of the MCU.

5. The protective charging system for a robot charging station according to claim 4, characterized in that, The monitoring unit also includes an electrostatic discharge protection module, which is connected in parallel to the second positive monitoring contact and the second negative monitoring contact to discharge static electricity.

6. The protective charging system for a robot charging station according to claim 4, characterized in that, The monitoring unit also includes a reverse connection protection module, which is located between the second positive monitoring contact and the current limiting voltage divider module, and is used to block the current path when the external power supply is reverse connected.

7. The protective charging system for a robot charging station according to claim 3, characterized in that, The power supply unit includes a power conversion module, which is controlled by the main control unit and dynamically adjusts the external power input into the charging voltage and current required by the robot according to the instructions of the main control unit.

8. The protective charging system for a robot charging station according to claim 7, characterized in that, The power conversion module uses a DC-DC circuit.

9. The protective charging system for a robot charging station according to claim 3, characterized in that, The power supply unit further includes a filter module, which is connected in parallel to both ends of the second positive charging contact and the second negative charging contact.

10. The protective charging system for a robot charging station according to claim 7 or 8, characterized in that, The main control unit controls the power conversion module to provide the corresponding charging voltage and current through the IIC signal.

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