A battery charging protection method and device, electronic equipment and storage medium

Abstract

The application discloses a battery charging protection method and device, a ground cleaning device and a tool, and relates to the technical field of battery charging. The method comprises the following steps: when charging the ground cleaning device, collecting a charging voltage and a charging current at the time of charging; and judging whether the charging state of the battery satisfies any one condition in a charging trigger protection condition set based on the charging voltage and the charging current. If the condition is satisfied, the battery is controlled to enter a dormant state. The charging trigger protection condition set comprises the following conditions: the charging voltage is not in a first preset range; the charging time of the battery when charging at the charging voltage in the first preset range is greater than a preset charging time; when the charging current is less than a preset current threshold value and the voltage of the battery is less than a first preset voltage threshold value, a charging switch tube between the battery and a charging loop is in a closed state. The above method improves the accuracy of device charging anomaly identification and effectively improves the service life of the battery.

Description

Technical Field

[0001] This invention relates to the field of battery charging technology, and in particular to a battery charging protection method, device, electronic device, and storage medium. Background Technology

[0002] Floor scrubbers, as highly efficient cleaning equipment, are widely used in various industrial and commercial settings such as factory workshops, shopping malls, supermarkets, airports, train stations, and warehousing and logistics centers. When charging the battery in a floor scrubber, the charging dock's metal contacts typically connect to the scrubber's metal contacts. This method inevitably results in varying contact areas and contact resistance due to differences in the contact area of ​​the metal contacts. Furthermore, oxidation of the metal contacts and aging of the grinding springs can also affect the charging resistance between the charging dock and the scrubber. When the charging resistance becomes abnormal for any reason, it is often accompanied by a difference between the voltage supplied to the positive or negative terminal of the battery and the voltage supplied by the charging dock, leading to charging failures, charging interruptions, and the battery becoming completely discharged because it cannot be charged from the dock, severely reducing the lifespan of the floor scrubber's battery. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of the present invention provide a battery charging protection method, device, floor cleaning equipment, and tool, which solve the technical problem in the prior art where batteries cannot be charged due to charging impedance, resulting in reduced service life.

[0004] A first aspect of this invention provides a battery charging protection method, comprising: Obtain the charging voltage and charging current of the battery in the floor cleaning equipment during charging; Based on the charging voltage and charging current, it is determined whether the battery's charging state meets any one of the conditions in the charging trigger protection condition set. If it does, the battery is controlled to enter a dormant state. The charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within the first preset range; The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than the preset charging time. The third charging trigger protection condition is that when the charging current is less than the preset current threshold and the battery voltage is less than the first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

[0005] In one possible implementation of the first aspect, the first preset range is greater than or equal to a second preset voltage threshold and less than or equal to a third preset voltage threshold, wherein the first preset voltage threshold is greater than or equal to the second preset voltage threshold and less than or equal to the third preset voltage threshold, and the second preset voltage threshold, the third preset voltage threshold and the first preset voltage threshold are determined according to the rated voltage of the battery.

[0006] In one possible implementation of the first aspect, it is determined whether the charging voltage is greater than or equal to a fourth preset voltage threshold. If it is greater than or equal to the fourth preset voltage threshold, it is determined that the ground cleaning equipment has been connected to the charging pile. It is also determined whether the charging voltage is within a first preset range. If it is not, the battery is controlled to be in a dormant state. If the voltage is less than the fourth preset voltage threshold, it is determined that the ground cleaning equipment is not connected to the charging pile, and the ground cleaning equipment is turned off. The fourth preset voltage threshold is greater than the first preset voltage threshold and less than the second preset voltage threshold.

[0007] In one possible implementation of the first aspect, determining whether the battery meets the second charging trigger protection condition includes: Determine whether the battery has reached the target state of charge. If it has, obtain the charging time from the start of charging to reaching the target state of charge. If the charging time exceeds the preset charging time, the battery will be put into a sleep state.

[0008] In one possible implementation of the first aspect, when the control battery is in a sleep state, it further includes: Once the control battery is in sleep mode, the timer for when the battery is in sleep mode will begin. The sleep time is obtained based on the timing of the battery in sleep mode; If the sleep time is greater than or equal to the preset sleep time, it is determined that the battery has a charging abnormality and the battery will continue to be kept in sleep mode. If the sleep time is less than the preset sleep time, the timer for the battery in sleep mode will be reset to zero and the charging station will continue to charge the battery.

[0009] In one possible implementation of the first aspect, controlling the battery to be in a sleep state includes: Disconnect the charging switch between the battery and the charging circuit, and disconnect the discharging switch between the battery and the discharging circuit.

[0010] To address the same technical problem, a second aspect of the present invention provides a battery charging protection device, comprising: The acquisition module is used to acquire the charging voltage and charging current of the battery in the ground cleaning equipment during charging. The battery charging protection module is used to determine whether the battery's charging state meets any one of the conditions in the charging trigger protection condition set based on the charging voltage and charging current. If it does, the battery is controlled to enter a dormant state. The charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within the first preset range; The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than the preset charging time. The third charging trigger protection condition is that when the charging current is less than the preset current threshold and the battery voltage is less than the first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

[0011] To address the same technical problem, a third aspect of the present invention provides a floor cleaning device, including the battery charging protection device of the second aspect of this embodiment.

[0012] To address the same technical problem, a fourth aspect of the present invention provides an electronic device, characterized in that it includes a processor and a memory, the memory storing machine-executable instructions that can be executed by the processor, the processor executing the machine-executable instructions to implement the battery charging protection method of the first aspect.

[0013] To address the same technical problem, a fifth aspect of the present invention provides a readable storage medium storing a computer program that, when executed by a processor, implements the steps of the battery charging protection method of the first aspect.

[0014] The technical solution of this invention has the following advantages: The battery charging protection method provided in this invention collects the charging voltage and current during the charging of a floor cleaning device. Based on the charging voltage and current, it determines whether the battery's charging state meets any one of the conditions in the charging trigger protection condition set. If the condition is met, the battery is controlled to enter a dormant state. The charging trigger protection condition set includes: a first charging trigger protection condition where the charging voltage is not within a first preset range; a second charging trigger protection condition where the charging time is longer than a preset charging time when the battery is charging at a voltage within the first preset range; and a third charging trigger protection condition where the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, and the charging switch between the battery and the charging circuit is in a closed state. This method improves the accuracy of identifying abnormal charging conditions by combining the charging voltage and the charging / discharging switch status. It avoids the problem of the floor cleaning device being connected to the charging pile but unable to charge due to charging impedance, leading to battery self-discharge and eventual failure, thus effectively improving battery lifespan. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a flowchart of the battery charging protection method in an embodiment of the present invention; Figure 2 This is a flowchart of the battery charging protection method in an embodiment of the present invention; Figure 3 This is a block diagram of the battery charging protection device in an embodiment of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The battery charging protection method provided in this embodiment of the invention, such as... Figure 1 As shown, Figure 1The flowchart for the battery charging protection method includes steps S101 to S102, and the specific steps are as follows: S101. Obtain the charging voltage and charging current of the battery in the ground cleaning equipment during charging.

[0019] In this embodiment, the charging voltage refers to the actual charging voltage output by the charging pile to the battery of the ground cleaning device after it starts charging by connecting to the charging pile; that is, the voltage detected across the positive and negative terminals of the battery during charging. The charging current refers to the actual charging current output by the charging pile that can be supplied to the battery of the ground cleaning device after it starts charging by connecting to the charging pile. This embodiment does not limit the specific method of obtaining the charging voltage and charging current of the battery in the ground cleaning device during charging. For example, after the ground cleaning device and the charging pile are connected, and the charging pile detects the connection of the ground cleaning device, the charging pile charges the ground cleaning device in a constant current charging mode or a constant voltage charging mode. Simultaneously, a voltage detection unit and a current detection unit are set in the ground cleaning device to detect the current and voltage in the charging circuit, respectively, to obtain the charging voltage and charging current.

[0020] It should be noted that the voltage detection unit includes, but is not limited to, a unit composed of voltage divider resistors and an analog-to-digital converter module, and can be determined according to actual needs. The current detection unit includes, but is not limited to, a unit composed of a Hall current sensor, a current transformer, or a sampling resistor, and can be determined according to actual needs. This embodiment is not limited to the charging scenario of ground cleaning equipment, but can also be applied to other scenarios of equipment that need to be charged.

[0021] S102. Based on the charging voltage and charging current, determine whether the battery's charging state meets any one of the conditions in the charging trigger protection condition set. If it does, control the battery to enter a dormant state. The charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within a first preset range. The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than a preset charging time. The third charging trigger protection condition is that when the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

[0022] In one embodiment, the first preset range is greater than or equal to a second preset voltage threshold and less than or equal to a third preset voltage threshold, wherein the first preset voltage threshold is less than the second preset voltage threshold, and the second preset voltage threshold, the third preset voltage threshold and the first preset voltage threshold are determined according to the rated voltage of the battery.

[0023] In this embodiment, the charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. Due to differences in charging impedance, the abnormal states that occur during battery charging also differ. Therefore, it is necessary to combine multiple charging impedance anomaly identification conditions to determine the battery's charging state. When the battery's charging state is detected to meet one of the three charging trigger protection conditions, a charging protection action is immediately triggered, putting the battery into a dormant state. Specifically, the first charging trigger protection condition is that the charging voltage is not within a first preset range. Since different contact areas of the metal contacts inevitably occur during charging, resulting in different charging impedances, the voltage supplied to the battery differs from the voltage output by the charging pile. Therefore, it is necessary to identify impedance anomalies based on the charging voltage supplied to the battery by the charging pile. Figure 2 A flowchart of the battery charging protection method, as shown. Figure 2As shown, when an anomaly is detected by checking the battery's charging voltage, it is determined whether the charging voltage is within a first preset range. If the charging voltage is not within the first preset range, the battery is controlled to enter a sleep state, and the sleep time is obtained. If the sleep time is greater than or equal to the preset sleep time, it is determined that the battery has a charging anomaly, and the battery continues to be controlled to enter a sleep state. For example, when the detected charging voltage is greater than or equal to 22V and less than or equal to 29V, it indicates that the floor cleaning equipment is charging normally or abnormally; otherwise, it is in an abnormal state. At this time, a sleep strategy is introduced, the battery in the floor cleaning equipment is adjusted to a sleep state, and a timer is set to obtain the sleep time of the battery in the sleep state. If the sleep time is greater than or equal to 10 seconds, it is determined that the floor cleaning equipment has indeed malfunctioned, and it continues to enter a sleep state. The second charging trigger protection condition in this embodiment is that when the battery is charged at a charging voltage within a first preset range, the charging time exceeds a preset charging time. Specifically, if charging anomaly detection relies solely on the charging voltage, the battery management system might mistakenly believe charging is in progress when the charging pile provides a false voltage to the charging detection port, even though the battery is not actually receiving current. This could not only deplete the battery and affect user experience but also increase battery safety risks. Therefore, the battery cannot correctly identify the charging anomaly state and continue discharging when it is low in charge. In this case, the charging anomaly state can be identified by charging timeout. When the charging time exceeds the preset charging time, the charging impedance is determined to be abnormal. The third charging trigger protection condition in this embodiment is that when the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state. Specifically, determining whether there is an abnormality in charging impedance by charging timeout requires a long time and is not suitable for batteries with low remaining charge, especially for products that have already implemented undervoltage protection automatic shutdown. The energy consumption during this period of charging time determination is also relatively large. Therefore, it is necessary to determine the state of the charging switch. Furthermore, in cases of other fault types, such as overheating protection during charging, the charging switch itself will be in an open state, with zero charging current. To prevent such misjudgments, the conditions for the charging switch to turn on need to be considered. Specifically, if the charging voltage is within a first preset range, the state of the charging switch between the battery and the charging circuit is further assessed. If the charging switch is closed, it is determined whether the battery voltage is less than a first preset voltage threshold (e.g., 2.5V) and whether the charging current is less than a preset current threshold (e.g., 100mA). If both are less than this threshold, the battery in the floor cleaning equipment is put into a sleep state, and the sleep time is recorded. If the sleep time is greater than or equal to 10 seconds, the floor cleaning equipment is deemed to have malfunctioned, and it remains in a sleep state. It should be noted that the preset current threshold can be determined based on actual needs.By introducing the charging switch status for auxiliary judgment, the judgment of charging abnormality is more accurate and misjudgment is prevented.

[0024] In one embodiment, after obtaining the charging voltage of the battery in the floor cleaning device during charging, the method further includes: Determine whether the charging voltage is greater than or equal to the fourth preset voltage threshold. If it is greater than or equal to the fourth preset voltage threshold, determine that the ground cleaning equipment has been connected to the charging pile. Also determine whether the charging voltage is within the first preset range. If it is not, control the battery to enter a dormant state. If the voltage is less than the fourth preset voltage threshold, it is determined that the ground cleaning equipment is not connected to the charging pile, and the ground cleaning equipment is turned off. The fourth preset voltage threshold is greater than the first preset voltage threshold and less than the second preset voltage threshold.

[0025] In this embodiment, after determining the charging voltage, it is judged whether the ground cleaning device has established a valid connection with the charging pile, and then it is decided whether to execute the subsequent charging abnormality judgment process. For example, it is judged whether the charging voltage is greater than or equal to a fourth preset voltage threshold. When the fourth preset voltage threshold is set to 15V, if the charging voltage is greater than or equal to 15V, it is determined that the ground cleaning device has been connected to the charging pile. Then it is judged whether the charging voltage is within a first preset range. If it is not, the battery is controlled to enter a sleep state and a timer is started. If the charging voltage is less than 15V, it is determined that the ground cleaning device is not connected to the charging pile, and there is no need to perform a charging abnormality judgment; the ground cleaning device is directly controlled to shut down. It should be noted that the fourth preset voltage threshold is determined based on the battery's open-circuit voltage, which refers to the voltage between the two terminals of the battery when no load is connected and no charging or discharging operation is performed.

[0026] In one embodiment, determining whether the battery meets the second charging trigger protection condition includes: Determine whether the battery has reached the target state of charge. If it has, obtain the charging time from the start of charging to reaching the target state of charge. If the charging time exceeds the preset charging time, the battery will be put into a sleep state.

[0027] In this embodiment, the target state of charge refers to the end point of the battery charging process, such as a fully charged battery (100%) or a battery that has reached 80%, which can be determined according to actual needs. Specifically, under certain abnormal conditions, the charging voltage cannot be used as a complete criterion for identifying charging abnormalities. Therefore, another identification strategy needs to be introduced. When the voltage is constant, the charging current will inevitably be lower than during normal charging due to impedance, resulting in a longer charging time. Therefore, charging timeout is used as another identification condition for abnormal charging states. Specifically, after the battery reaches the target state of charge (i.e., fully charged), the charging time from the start of charging to full charge is obtained. If the charging time is greater than the preset charging time, such as 4 hours, it is considered that there may be an abnormality in charging. At this time, the battery is controlled to enter a dormant state, and the dormant time is timed. If the dormant time is greater than or equal to the preset dormant time, it is determined that the battery has a charging abnormality and needs to enter dormant mode to prevent the battery from dying due to inability to charge.

[0028] It should be noted that the preset sleep time is preferably 10 seconds, but in actual applications, it can be determined according to actual needs.

[0029] In one embodiment, controlling the battery to be in a sleep state includes: Disconnect the charging switch between the battery and the charging circuit, and disconnect the discharging switch between the battery and the discharging circuit.

[0030] In this embodiment, the charging circuit refers to the current path through which the charging pile supplies electrical energy to the battery. It is activated when the battery is charging and includes at least the charging pile output terminal, charging interface, charging switch transistor, battery positive and negative terminals, current detection unit, and voltage detection unit. The discharging circuit refers to the current path through which the battery supplies electrical energy to other loads of the floor cleaning equipment. It includes at least the battery positive and negative terminals, discharging switch transistor, equipment load (such as motor, main control board, water pump), current detection unit, and voltage detection unit. It is activated when the floor cleaning equipment is working, such as when the floor cleaning equipment is mopping. When a sleep strategy is implemented to put the battery in the floor cleaning equipment into a sleep state, the charging switch transistor in the charging circuit and the discharging switch transistor in the discharging circuit are disconnected, so that the battery neither charges nor discharges.

[0031] In one embodiment, after the control battery is in a sleep state, the method further includes: Once the control battery is in sleep mode, the timer for when the battery is in sleep mode will begin. The sleep time is obtained based on the timing of the battery in sleep mode; If the sleep time is greater than or equal to the preset sleep time, it is determined that the battery has a charging abnormality and the battery will continue to be kept in sleep mode. If the sleep time is less than the preset sleep time, the timer for the battery in sleep mode will be reset to zero and the charging station will continue to charge the battery.

[0032] In this embodiment, a sleep timer is started simultaneously with the battery entering a sleep state to begin recording the duration of the sleep state. During sleep, the charging and discharging switches are disconnected, there is no current in the charging circuit, and the battery is not charged. However, the voltage output from the charging station is still transmitted to the battery through the wires. Therefore, the sleep time is continuously recorded while the battery is in sleep mode, and the charging voltage is also collected in real time to obtain the real-time charging voltage. If the real-time charging voltage is within a first preset range, the sleep timer is turned off to stop counting, the sleep time is obtained, and the charging switch between the battery and the charging circuit, as well as the discharging switch between the battery and the discharging circuit, are closed, restoring the conduction state of the charging and discharging circuits.

[0033] Because charging anomalies caused by impedance can lead to decreased charging efficiency, accelerated battery aging, and battery overheating, the charging switch in the charging circuit is disconnected and charging is stopped upon detecting an anomaly. However, the floor cleaning equipment remains operational after charging stops and still consumes considerable power. Therefore, it is necessary to reduce the standby power consumption of the floor cleaning equipment at the charging station by shutting down or putting it into sleep mode. Shutting down can minimize the product's power consumption to the microamp level. However, some specially designed floor cleaning equipment may not be able to shut down while at the charging station. Therefore, a sleep mode strategy is needed to disconnect the switches in the charging and discharging circuits, disabling most of the product functions of the floor cleaning equipment to minimize battery power consumption, while keeping the microcontroller powered on to ensure that its built-in timer, voltage detection unit, and interrupt response functions remain active to handle any necessary responses. In this embodiment, if the sleep time is less than the preset sleep time, the sleep timer is reset to zero, and the battery is re-judged based on the charging voltage or charging time to determine the charging anomaly. It should be noted that both the charging and discharging switches are metal-oxide-semiconductor field-effect transistors.

[0034] The battery charging protection device provided in the embodiments of the present invention, such as Figure 3 As shown, Figure 3 A block diagram of the battery charging protection device 300 includes: The acquisition module 301 is used to acquire the charging voltage and charging current of the battery in the ground cleaning equipment during charging. The battery charging protection module 302 is used to determine whether the battery's charging state meets any one of the conditions in the charging trigger protection condition set based on the charging voltage and charging current. If the condition is met, the battery is controlled to enter a dormant state. The charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within a first preset range. The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than a preset charging time. The third charging trigger protection condition is that when the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

[0035] The floor cleaning equipment provided in this embodiment of the invention includes a battery charging protection device as described in this embodiment.

[0036] In one embodiment of this application, an electronic device is provided, which includes a memory and a processor. The memory stores machine-executable instructions that can be executed by the processor. When the processor executes a computer program, it implements the above steps. The computer device provided in this embodiment has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0037] In one embodiment of this application, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, it performs the above steps; the implementation principle and technical effects of the computer-readable storage medium provided in this embodiment are similar to those of the above method embodiments, and will not be repeated here.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A battery charging protection method, characterized in that, include: Obtain the charging voltage and charging current of the battery in the floor cleaning equipment during charging; Based on the charging voltage and the charging current, it is determined whether the charging state of the battery satisfies any one of the conditions in the charging trigger protection condition set. If so, the battery is controlled to enter a dormant state. The charging trigger protection condition set includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within a first preset range; The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than the preset charging time. The third charging trigger protection condition is that when the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

2. The battery charging protection method as described in claim 1, characterized in that, The first preset range is greater than or equal to the second preset voltage threshold and less than or equal to the third preset voltage threshold, wherein the first preset voltage threshold is less than the second preset voltage threshold, and the second preset voltage threshold, the third preset voltage threshold and the first preset voltage threshold are determined according to the rated voltage of the battery.

3. The battery charging protection method as described in claim 2, characterized in that, After obtaining the charging voltage of the battery in the floor cleaning equipment during charging, the process also includes: Determine whether the charging voltage is greater than or equal to a fourth preset voltage threshold. If it is greater than or equal to the fourth preset voltage threshold, determine that the ground cleaning equipment has been connected to the charging pile. Also determine whether the charging voltage is within the first preset range. If it is not, control the battery to enter a dormant state. If the voltage is less than the fourth preset voltage threshold, it is determined that the ground cleaning equipment is not connected to the charging pile, and the ground cleaning equipment is turned off. The fourth preset voltage threshold is greater than the first preset voltage threshold and less than the second preset voltage threshold.

4. The battery charging protection method as described in claim 1, characterized in that, The step of determining whether the battery meets the second charging trigger protection condition includes: Determine whether the battery has reached the target state of charge. If the target state of charge has been reached, obtain the charging time from the start of charging to reaching the target state of charge. If the charging time is longer than the preset charging time, the battery is controlled to enter a dormant state.

5. The battery charging protection method as described in claim 3, characterized in that, When the battery is put into a sleep state, the following is also included: Once the battery is in a sleep state, a timer for when the battery is in a sleep state begins. The sleep time is obtained based on the timing of the battery being in sleep mode; If the sleep time is greater than or equal to the preset sleep time, it is determined that the battery has a charging abnormality, and the battery is kept in sleep mode. If the sleep time is less than the preset sleep time, the timer for the battery in sleep mode is reset to zero, and the charging pile is controlled to continue charging the battery.

6. The battery charging protection method as described in claim 1, characterized in that, The control of the battery to be in a dormant state includes: Disconnect the charging switch between the battery and the charging circuit, and disconnect the discharging switch between the battery and the discharging circuit.

7. A battery charging protection device, characterized in that, include: The acquisition module is used to acquire the charging voltage and charging current of the battery in the ground cleaning equipment during charging. A battery charging protection module is used to determine, based on the charging voltage and the charging current, whether the charging state of the battery meets any one of the conditions in a set of charging trigger protection conditions. If the condition is met, the battery is controlled to enter a dormant state. The set of charging trigger protection conditions includes a first charging trigger protection condition, a second charging trigger protection condition, and a third charging trigger protection condition. The first charging trigger protection condition is that the charging voltage is not within a first preset range; The second charging trigger protection condition is that when the battery is charged at a charging voltage within the first preset range, the charging time is greater than the preset charging time. The third charging trigger protection condition is that when the charging current is less than a preset current threshold and the battery voltage is less than a first preset voltage threshold, the charging switch between the battery and the charging circuit is in a closed state.

8. A floor cleaning device, characterized in that, Includes the battery charging protection device as described in claim 7.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing machine-executable instructions that can be executed by the processor to implement the battery charging protection method according to any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the battery charging protection method as described in any one of claims 1-6.

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