An AC charger on-off regulation method and system

Abstract

The application relates to an AC charger on-off regulation method and system, and relates to the electrical appliance technical field, which comprises the following steps: step 1, collecting and analyzing the clamping force of a preset tripper on an electrode piece of a charger, continuously monitoring the charging current of the charger when the clamping force is in a preset stable clamping interval value; step 2, analyzing the current signal of the charging current, and issuing a resistance regulation instruction to increase the resistance value of a preset regulation resistor when the current signal is consistent with a preset full-battery signal; step 3, indicating the preset tripper to reduce the clamping force on the electrode piece when the current size of the charging current is in a preset safe current range; and step 4, indicating a preset magnetic attraction device to adsorb the electrode piece when the clamping force of the tripper is in a preset loose clamping force interval value. The application has the effect of reducing the probability of short-circuit hidden troubles caused by overcharging when the charger charges the battery.

Description

Technical Field

[0001] This application relates to the field of charger technology, and in particular to an AC charger on / off adjustment method and system. Background Technology

[0002] With the increasing popularity and promotion of electric bicycles, the charging safety of electric bicycles has received more widespread attention.

[0003] In related technologies, electric bicycles use AC chargers for AC charging. When the battery is fully charged, the charger needs to be unplugged from the socket in time to prevent the electric bicycle battery from being overcharged and causing a short circuit. At the same time, it can reduce the occupation of charging ports on the charging station.

[0004] Regarding the aforementioned technologies, if the charger is not unplugged in time after the battery is fully charged due to human negligence, it will not reduce the probability of short circuit caused by overcharging. Summary of the Invention

[0005] In order to reduce the probability of battery overcharging and short circuit hazards caused by the charger not being unplugged in time during the charging process, this application provides an AC charger on / off adjustment method and system.

[0006] Firstly, this application provides a method for adjusting the on / off state of an AC charger, employing the following technical solution:

[0007] A method for adjusting the on / off state of an AC charger, comprising:

[0008] Step 1: Analyze the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, continuously monitor the charging current of the charger.

[0009] Step 2: Analyze the charging current signal. When the current signal matches the preset battery full charge signal, issue a resistance adjustment command to increase the resistance of the preset adjustment resistor.

[0010] Step 3: When the charging current is within the preset safe current range, instruct the preset trip unit to reduce the clamping force on the electrode plate.

[0011] Step 4: When the clamping force of the trip unit is within the preset release clamping force range, the preset magnetic attraction device is instructed to attract the electrode plate.

[0012] By adopting the above technical solution, before the charger completes charging, the trip unit maintains a stable clamp on the charger's electrode plates until charging is complete, gradually releasing the clamp on the corresponding electrode plates. This allows the electrode plates to separate from the charging station, and the electrode plates are then attracted by a magnetic device. This prevents the electrode plates from forming an electrical connection with the charging station, helping to reduce the probability of short circuits caused by overcharging and also reducing the probability of the charger falling to the ground and being damaged after detaching. In addition, when the battery is fully charged, the resistance value is increased by adjusting the resistor to reduce the current input to the battery, thus preventing the current load from acting on the battery. Even if the electrode plates remain connected to the charging socket, this further helps to reduce the probability of battery overcharging and improves charging safety.

[0013] Optionally, in step 2, instructing the preset trip unit to reduce the clamping force on the electrode sheet includes:

[0014] The number of electrode plates in the charger is analyzed to determine the number of clamping plates.

[0015] Match the electrode release sequence corresponding to the number of clamped electrodes in the preset release database, and instruct the preset release device to reduce the clamping force in sequence according to the release sequence;

[0016] When the clamping force of each electrode plate on the trip unit is within the preset release clamping force range, the preset trip unit is instructed to adjust the clamping force to the preset stable clamping range.

[0017] By adopting the above technical solution, the clamping force required by the trip unit to hold the electrode plates varies when different chargers are plugged into and connected to the charging pile. The electrode plates are released sequentially according to the tripping sequence, which makes it less likely for the charger to suddenly detach from the charging pile. This helps the magnetic adsorption device to stably adsorb the electrode plates. After the trip unit completely releases the clamping force of each electrode plate, the trip unit can squeeze the electrode plate by increasing the clamping force of the trip unit, which helps to drive the electrode plate to further detach from the charging pile, further reducing the probability of the electrode plate and the charging pile being connected to power.

[0018] Optionally, when reducing the clamping force sequentially according to the tripping sequence, the following steps are included:

[0019] The charging temperature during the charging process of the charger is collected, and the electrode oxidation coefficient corresponding to the charging temperature is determined by calculating according to the preset electrode oxidation calculation strategy.

[0020] When the oxidation coefficient of the electrode sheet is greater than the preset good oxidation coefficient, the preset oxidation repair device is instructed to perform surface friction treatment on the electrode sheet.

[0021] The electrode oxidation calculation strategy uses the following formula:

[0022] O(t) = k·ea·T(t) ;

[0023] T(t) = T0 + b·t;

[0024] Where O(t) represents the oxidation coefficient of the electrode sheet, k represents the thermal conductivity constant of the electrode sheet, a represents the influence coefficient of temperature on the oxidation rate of the electrode sheet, T(t) represents the temperature function of the electrode sheet as a function of charging time, T0 represents the initial temperature of the electrode sheet, and b represents the rate of temperature rise of the electrode sheet.

[0025] By adopting the above technical solution, when the clamps on the electrode sheets are released one by one, the oxidation coefficient of the electrode sheet surface is further analyzed. When the oxidation coefficient of the electrode sheet is greater than the good oxidation coefficient, the surface of the electrode sheet is rubbed to reduce the degree of oxidation of the electrode sheet surface, which helps the charger to charge effectively in subsequent charging processes.

[0026] Optionally, when performing surface friction treatment on the electrode sheet, the following steps may be taken:

[0027] The electrode sheet is subjected to current testing to determine the detection current signal when the electrode sheet undergoes oxidation repair;

[0028] The oxidation repair coefficient of the electrode sheet is determined by calculation and analysis based on the detected current signal and the preset oxidation repair strategy.

[0029] Based on the comparison between the oxidation repair coefficient and the preset good oxidation coefficient, it is determined whether to stop the oxidation repair of the electrode sheet or continue the oxidation repair of the electrode sheet.

[0030] By adopting the above technical solution, during the surface friction repair process of the electrode sheet, the corresponding current signal is detected, thereby performing corresponding current oxidation repair analysis. This allows for timely detection of the oxidation repair progress and timely cessation of friction treatment on the electrode sheet surface, reducing the probability of excessive friction affecting the electrode sheet thickness loss.

[0031] Optionally, the oxidative remediation strategy can be calculated using the following formula:

[0032] O(f) = k·F·tn·μ;

[0033] Where O(f) represents the oxidation repair coefficient, k represents the oxidation rate constant under the action of friction force per unit time, F represents the contact extrusion force when the oxidation repair device performs friction treatment on the electrode sheet, t represents the friction time, n represents the number of frictions, and μ represents the oxidation repair ratio coefficient for each friction.

[0034] By adopting the above technical solution, the basic extrusion pressure, number of frictions, friction time, and oxidation repair ratio coefficient of each friction are analyzed and calculated when the electrode sheet is surface treated, so as to obtain the oxidation repair coefficient of the electrode sheet when it is surface friction treated.

[0035] Optionally, when determining the oxidation remediation coefficient of the electrode sheet, the following may also be included:

[0036] The difference in oxidation coefficients is determined by calculation based on the oxidation repair coefficient and the oxidation coefficient of the electrode sheet;

[0037] When the difference in oxidation coefficients is within a preset small difference range, the repair friction force value of the difference in oxidation coefficients is matched with that in the preset oxidation friction database;

[0038] The repair friction force value and the magnetic attraction force are compared. When the repair friction force value is less than the attraction force, the signal of the charger being released when it is pulled out of the charging pile is collected.

[0039] The magnetic attraction device releases the electrode plate based on the release signal indication.

[0040] By adopting the above technical solution, the oxidation coefficient difference during the surface oxidation treatment of the electrode sheet is calculated. When the oxidation coefficient difference is within a small range, the electrode sheet is released by adjusting the magnetic suction device, so that the magnetic suction device is less likely to increase the surface friction of the electrode sheet due to the attraction force, which helps to reduce the probability of excessive surface friction wear and improve the service life of the electrode sheet.

[0041] Optionally, when collecting the release signal as the charger is unplugged from the charging station, it includes:

[0042] The charger pressure value of the preset trip unit is analyzed to determine the rate of change of the charger pressure value.

[0043] When the rate of change of pressure value is less than or equal to the preset rate of change of pressure value at rest, the preset magnetic attraction device is instructed to maintain the adsorption of the electrode plate.

[0044] When the rate of change of pressure value is greater than the preset rate of change of pressure value at rest, a release signal is sent.

[0045] By adopting the above technical solution, during the adsorption process between the charger's electrode plates and the magnetic attraction device, the system detects whether the charger experiences a pressure change when pulled out by a person, thereby promptly issuing a release signal. This helps improve the accuracy of detecting changes in the charger's force and prevents the charger from experiencing excessive friction and pressure when the electrode plates are subjected to minor friction treatment, thus reducing excessive wear.

[0046] Secondly, this application provides an AC charger on / off adjustment system, which adopts the following technical solution:

[0047] An AC charger on / off regulation system, comprising:

[0048] The acquisition module collects and analyzes the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, it monitors the charging current of the charger.

[0049] The current analysis module analyzes the charging current to determine when the current signal matches the preset battery full charge signal, and instructs the preset trip unit to reduce the clamping force on the electrode plates.

[0050] The on / off control module analyzes whether the current signal is consistent with the preset stop charging signal when the clamping force decreases to within the preset release clamping force range. If they are consistent, it instructs the preset magnetic attraction device to attract the charger electrode plate.

[0051] By adopting the above technical solution, before the charger completes charging, the trip unit keeps the electrode plates of the charger stably clamped until the charging is completed, and then gradually releases the clamping of the corresponding electrode plates, so that the electrode plates are released from the charging pile. The electrode plates are then attracted by the magnetic attraction device, so that the electrode plates are not likely to form an electrical connection with the charging pile. This helps to reduce the probability of short circuit caused by overcharging, and also reduces the probability of the charger falling to the ground and being damaged after it is detached.

[0052] In summary, this application includes at least one of the following beneficial technical effects:

[0053] 1. Before the charger finishes charging, the trip unit keeps the electrode plates of the charger stably clamped until the charging is completed. Then, the clamping of the corresponding electrode plates is gradually released, so that the electrode plates are released from the charging pile. The electrode plates are then attracted by the magnetic attraction device, so that the electrode plates are less likely to form an electrical connection with the charging pile, which helps to reduce the probability of short circuit caused by overcharging.

[0054] 2. When the clamps on the electrode plates are released one by one, the oxidation coefficient of the electrode plate surface is further analyzed. If the oxidation coefficient of the electrode plate is greater than the good oxidation coefficient, the surface of the electrode plate is rubbed to reduce the degree of oxidation of the electrode plate surface, which helps the charger to charge effectively in subsequent charging use.

[0055] 3. During the surface friction repair process of the electrode sheet, the corresponding current signal is detected to perform corresponding current oxidation repair analysis, so as to know the progress of oxidation repair in time and stop the friction treatment of the electrode sheet surface in time, thereby reducing the probability of excessive friction affecting the electrode sheet thickness loss. Attached Figure Description

[0056] Figure 1 This is a flowchart of steps S100 to S400 in this application.

[0057] Figure 2 This is a flowchart of steps S201 to S203 in this application.

[0058] Figure 3 This is a flowchart of steps S2021 to S2022 in this application.

[0059] Figure 4 This is a flowchart of steps S2023 to S2025 in this application.

[0060] Figure 5 This is a flowchart of steps S2026 to S2029 in this application.

[0061] Figure 6 This is a flowchart of steps SS20281 to S20283 in this application.

[0062] Figure 7 This is a circuit diagram of the charger used for power-on / off control in this application.

[0063] Figure 8 This is a circuit diagram showing the connection between the charger and the trip unit in this application. Detailed Implementation

[0064] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-8 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0065] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0066] This application discloses an AC charger on / off adjustment method. Before the charger finishes charging, the trip unit keeps the electrode plates of the charger stably clamped until the charging is completed. Then, the clamping of the corresponding electrode plates is gradually released, so that the electrode plates are released from the charging pile. The electrode plates are then attracted by a magnetic attraction device, so that the electrode plates are less likely to form an electrical connection with the charging pile. This helps to reduce the probability of short circuit caused by overcharging and also reduces the probability of the charger falling to the ground and being damaged after it is detached.

[0067] Reference Figure 1 The method for adjusting the on / off state of an AC charger includes the following steps:

[0068] Step S100: Analyze the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, continuously monitor the charging current of the charger.

[0069] A trip unit is a charger tripping device pre-installed on a charging station. It can clamp and release the charger's electrode plates and drive the electrode plates to detach from the charging station.

[0070] In addition, the trip unit is equipped with a corresponding pressure sensor element. The pressure sensor element detects the squeezing force generated when the electrode sheet is clamped and defines it as the clamping force on the electrode sheet. The purpose of collecting the clamping force is to be used for further analysis later.

[0071] Step S200: Analyze the charging current signal. When the current signal is consistent with the preset battery full charge signal, issue a resistance adjustment command to increase the resistance of the preset adjustment resistor.

[0072] The current signal represents the level signal of the current. During the charging process, the current signal passing through the charger is a high-level signal. When the battery is about to be fully charged, the signal passing through the charger is a low-level signal. The low-level signal is defined as the battery full charge signal. By monitoring and comparing the current signal, it is possible to know in time whether the battery is fully charged. When the current signal and the battery full charge signal are consistent, it means that the battery is fully charged. Then, the trip unit is controlled to reduce the clamping force on the electrode plates, so that the charger can be released from the charging pile.

[0073] It should be noted that when the charger is inserted into the charging station, the charger's electrode plates and the charging station's socket remain in contact. At the same time, the trip unit automatically clamps the charger's electrode plates. The charger is equipped with an automatic power-on / off chip unit. When the trip unit clamps the electrode plates, the charger charges the battery. When the trip unit releases the electrode plates, charging stops.

[0074] The regulating resistor is an adjustable resistor in the charger. By receiving a resistance adjustment command, the resistance value of the regulating resistor can be increased, which can reduce the current transmitted to the battery, thereby making the current load on the battery more equitable and reducing the probability of overcharging.

[0075] Step S300: Step 3, when the charging current is within the preset safe current range, instruct the preset trip unit to reduce the clamping force on the electrode plate.

[0076] The safe current range indicates that the charging current output by the charger is less than the required charging current. If the current is less than the required current, the battery will not be overcharged. In this case, the trip unit is instructed to reduce the clamping force on the electrode plates to release the charger.

[0077] Step S400: When the clamping force of the trip unit is within the preset release clamping force range, the preset magnetic attraction device is instructed to attract the electrode plate.

[0078] The release clamping force range is a preset clamping force range value, indicating the minimum clamping force required to release the electrode plate from the trip unit. By comparing the clamping force with the preset release clamping force range value, it can be determined whether the electrode plate can be detached from the charging pile. When the clamping force is within the release clamping force range value, the magnetic attraction device attracts the electrode plate, preventing the charger from falling directly off the charging pile after the electrode plate detaches. The magnetic attraction device is a sliding mechanism pre-installed on the trip unit. A magnetic block is installed on the sliding mechanism, which is connected to a servo motor and a control chip. When the control chip receives a prompt signal that matches both the current signal and the charging stop signal, it controls the servo motor to provide driving force to bring the magnetic block and the electrode plate closer together for attraction. When needed, the magnetic block and the electrode plate are released.

[0079] Reference Figure 2 In step 2, instructing the preset trip unit to reduce the clamping force on the electrode sheet includes:

[0080] Step S201: Analyze the number of electrode plates in the charger to determine the number of clamping plates.

[0081] Different types of chargers are used when charging batteries with different capacities, such as three-socket chargers, two-socket chargers, or specific socket chargers. When clamping different numbers of electrode plates, the trip unit is set with corresponding clamping force and clamping number. The clamping number indicates the number of clamping points on the electrode plates.

[0082] Step S202: Match the electrode release sequence corresponding to the number of clamped electrodes in the preset release database, and instruct the preset release device to reduce the clamping force sequentially according to the release sequence.

[0083] The tripping database stores different clamping quantities and corresponding tripping sequences. By inputting the clamping quantity, the corresponding tripping sequence can be matched and output. When the clamping force of the electrode plates is reduced according to the tripping sequence, compared to directly releasing the clamps on the electrode plates, the charger is less likely to fall directly, thus providing a protective function.

[0084] Step S203: When the clamping force of each electrode plate on the trip unit is within the preset release clamping force range, instruct the preset trip unit to adjust the clamping force to the preset stable clamping range.

[0085] As the trip unit releases each electrode piece in the trip sequence, until the last electrode piece is released, the clamping force is adjusted to a stable clamping range by controlling the trip unit. This makes it less likely for the electrode piece to automatically reconnect to the charging pile after it is detached from the charging pile without human intervention, thus helping to maintain the power-off stability of the charger.

[0086] Reference Figure 3 When reducing the clamping force sequentially according to the tripping sequence, including:

[0087] Step S2021: Collect the charging temperature during the charging process of the charger, and calculate it according to the preset electrode oxidation calculation strategy to determine the electrode oxidation coefficient corresponding to the charging temperature.

[0088] The electrode oxidation calculation strategy is a formula used to calculate the electrode oxidation coefficient. The specific calculation strategy will be further elaborated in subsequent steps.

[0089] Step S2022: When the oxidation coefficient of the electrode sheet is greater than the preset good oxidation coefficient, the preset oxidation repair device is instructed to perform surface friction treatment on the electrode sheet.

[0090] A favorable oxidation coefficient indicates that the surface oxidation of the electrode plates is low and will not affect the normal charging of the charger. When the oxidation coefficient of the electrode plates exceeds the preset favorable oxidation coefficient, it means that the oxidation on the charger surface will affect normal charging. In this case, the oxidation repair device is controlled to rub the electrode plate surface to repair the oxidized surface. The oxidation repair device is a friction mechanism pre-installed on the trip unit. The friction mechanism works in conjunction with a motor to ensure that the friction plates on the friction mechanism contact and rub the electrode plate surface to remove the oxide layer on the electrode plate surface. The causes of the oxide layer include the heat generated during the charging process of the charger, and the instantaneous high temperature caused by electrical sparks due to voltage instability when the electrode plates are inserted into the charging pile, resulting in severe oxidation.

[0091] The electrode oxidation calculation strategy uses the following formula:

[0092] O(t) = k·e a·T(t) ;

[0093] T(t) = T0 + b·t;

[0094] Where O(t) represents the oxidation coefficient of the electrode sheet, k represents the thermal conductivity constant of the electrode sheet, a represents the influence coefficient of temperature on the oxidation rate of the electrode sheet, T(t) represents the temperature function of the electrode sheet as a function of charging time, T0 represents the initial temperature of the electrode sheet, and b represents the rate of temperature rise of the electrode sheet.

[0095] Reference Figure 4 When performing surface friction treatment on the electrode sheet, it includes:

[0096] Step S2023: Perform a current test on the electrode to determine the detection current signal when the electrode is undergoing oxidation repair.

[0097] The MUC control unit on the charger controls the current to power the trip unit, enabling the trip unit to detect the current passing through the electrode plates. By analyzing the conductivity of the current detection signal, it can be determined whether the conductivity of the electrode plates meets the required requirements, thus facilitating subsequent analysis of the oxidation repair effect of the electrode plates.

[0098] Step S2024: Perform calculation and analysis based on the detected current signal and the preset oxidation repair strategy to determine the oxidation repair coefficient of the electrode sheet.

[0099] By monitoring and analyzing the detection current signal and calculating according to the oxidation repair strategy, the degree of repair of the electrode sheet during oxidation repair can be determined, and this degree of repair is defined as the oxidation repair coefficient.

[0100] Step S2025: Based on the comparison between the oxidation repair coefficient and the preset good oxidation coefficient, determine whether to stop the oxidation repair of the electrode sheet or maintain the oxidation repair of the electrode sheet.

[0101] By comparing the oxidation repair coefficient and the good oxidation coefficient, when the oxidation repair coefficient is less than or equal to the good oxidation coefficient, it indicates that the oxidized surface of the electrode sheet has been well repaired and will not affect the normal charging of the charger. In this case, the repair is stopped. Otherwise, the surface friction treatment of the electrode sheet is continued to repair the oxidized surface.

[0102] The following formula is used when calculating the oxidative remediation strategy:

[0103] O(f)=k·F·tn·μ.

[0104] Where O(f) represents the oxidation repair coefficient, k represents the oxidation rate constant under the action of friction force per unit time, F represents the contact extrusion force when the oxidation repair device performs friction treatment on the electrode sheet, t represents the friction time, n represents the number of frictions, and μ represents the oxidation repair ratio coefficient for each friction.

[0105] Reference Figure 5 When determining the oxidation repair coefficient of the electrode sheet, the following also applies:

[0106] Step S2026: Calculate the difference in oxidation coefficients based on the oxidation repair coefficient and the oxidation coefficient of the electrode sheet.

[0107] The difference between the oxidation repair coefficient and the electrode oxidation coefficient is calculated, and the calculated difference is defined as the oxidation coefficient difference, which can be used for further analysis.

[0108] Step S2027: When the oxidation coefficient difference is within a preset small difference range, match the repair friction force value of the oxidation coefficient difference in the preset oxidation friction database.

[0109] The minute difference range is a pre-defined interval, indicating a small difference in the oxidation coefficient. During oxidation repair, extensive friction treatment of the electrode sheet is unnecessary. The repair friction force value represents the frictional pressure applied to the electrode sheet during surface friction. By pre-establishing an oxidation friction database, different oxidation coefficient differences are stored, along with their corresponding repair friction force values. When an oxidation coefficient difference is input, the database automatically matches and outputs the corresponding repair friction force value.

[0110] Step S2028: Compare the repair friction value with the magnetic attraction force. When the repair friction value is less than the attraction force, collect the release signal when the charger is pulled out of the charging pile.

[0111] By comparing the corresponding repair friction force value with the magnetic attraction force, it can be determined whether the magnetic attraction force affects the resistance of friction repair. If the repair friction force value is greater than the attraction force, it means that even if the attraction force is in the opposite direction to the friction force when rubbing the electrode surface, it is not likely to cause excessive frictional resistance. Conversely, if the repair friction force value is less than the attraction force, the attraction force increases the risk of excessive friction, which is not conducive to accurate control of friction repair and can easily cause excessive friction and damage to the electrode surface. Simultaneously, the release signal when the charger is unplugged from the charging station is collected for later use in control.

[0112] Step S2029: Release the electrode plate using the preset magnetic attraction device based on the release signal indication.

[0113] When a release signal is detected, the magnetic adsorption device is instructed to release the electrode plates so that personnel can remove the charger without being obstructed.

[0114] Reference Figure 6 When the charger is unplugged from the charging station, the signal is collected, including:

[0115] Step S20281: Analyze the charger pressure value of the preset trip unit to determine the rate of change of the charger pressure value.

[0116] When collecting the release signal, the pressure value between the trip unit and the charger is monitored by a pressure sensor, and the rate of change of the charger's pressure value during the detection process is calculated to analyze whether the charger has disengaged from the trip unit.

[0117] Step S20282: When the pressure change rate is less than or equal to the preset static pressure change rate, instruct the preset magnetic attraction device to maintain the adsorption of the electrode sheet.

[0118] Step S20283: When the rate of change of pressure value is greater than the preset rate of change of pressure value at rest, send a release signal.

[0119] The static change rate indicates that the pressure change rate between the charger and the trip unit is zero, meaning the charger has not disengaged from the trip unit, i.e., the user has not unplugged the charger. When the pressure change rate is less than or equal to the preset static change rate, it indicates that the charger has not been unplugged, and the magnetic attraction device is instructed to attract the electrode plates; otherwise, a release signal is issued.

[0120] Reference Figure 7 and Figure 8 The charger contains a rectifier module for controlling current input, an AC intelligent power-on / off module, a power conversion module, a rectifier and filter module, a current and voltage control module, a single-chip MUC control module, and a heat dissipation control module. The external power supply output pin of the MUC control module is connected to a trip unit to supply power to it. It should be noted that the adjustable resistor is located in the rectifier module. When a resistance adjustment command is received, the resistance is increased until power is cut off. When charging resumes, the resistance is decreased to restore the set value, without hindering normal charging.

[0121] Based on the same inventive concept, embodiments of the present invention provide an AC charger on / off adjustment system, comprising:

[0122] The acquisition module collects and analyzes the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, it monitors the charging current of the charger.

[0123] The current analysis module analyzes the charging current to determine when the current signal matches the preset battery full charge signal, and instructs the preset trip unit to reduce the clamping force on the electrode plates.

[0124] The on / off control module analyzes whether the current signal is consistent with the preset stop charging signal when the clamping force decreases to within the preset release clamping force range.

[0125] If they match, the preset magnetic attraction device will be activated to attach to the charger electrode plates.

[0126] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0127] This invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed as an AC charger on / off adjustment method.

[0128] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0129] Based on the same inventive concept, embodiments of the present invention provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed to regulate the on / off state of an AC charger.

[0130] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0131] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for adjusting the on / off state of an AC charger, characterized in that, Includes the following steps: Step 1: Analyze the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, continuously monitor the charging current of the charger. Step 2: Analyze the charging current signal. When the current signal is consistent with the preset battery full charge signal, issue a resistance adjustment command to increase the resistance of the preset adjustment resistor and reduce the current transmitted to the battery. Step 3: When the charging current is within the preset safe current range, instruct the preset trip unit to reduce the clamping force on the electrode plate. When the preset trip unit reduces the clamping force on the electrode sheet, it includes: The number of electrode plates in the charger is analyzed to determine the number of clamping plates. Match the electrode release sequence corresponding to the number of clamped electrodes in the preset release database, and instruct the preset release device to reduce the clamping force in sequence according to the release sequence; When the clamping force of each electrode plate on the trip unit is within the preset release clamping force range, the preset trip unit is instructed to adjust the clamping force to the preset stable clamping range. When the clamping force is reduced sequentially according to the tripping sequence, it includes: The charging temperature during the charging process of the charger is collected, and the electrode oxidation coefficient corresponding to the charging temperature is determined by calculating according to the preset electrode oxidation calculation strategy. When the oxidation coefficient of the electrode sheet is greater than the preset good oxidation coefficient, the preset oxidation repair device is instructed to perform surface friction treatment on the electrode sheet. The electrode oxidation calculation strategy uses the following formula: ； ； in, Indicates the oxidation coefficient of the electrode sheet. This represents the thermal conductivity of the electrode plate. This represents the coefficient indicating the effect of temperature on the oxidation rate of the electrode sheet. This represents the temperature function of the electrode plate as a function of charging time. This indicates the initial temperature of the electrode plate. Indicates the rate of temperature rise of the electrode sheet; Step 4: When the clamping force of the trip unit is within the preset release clamping force range, analyze whether the current signal is consistent with the preset stop charging signal. If they are consistent, instruct the preset magnetic attraction device to attract the charger electrode plate.

2. The AC charger on / off adjustment method according to claim 1, characterized in that, When performing surface friction treatment on the electrode sheet, the following are included: The electrode sheet is subjected to current testing to determine the detection current signal when the electrode sheet undergoes oxidation repair; The oxidation repair coefficient of the electrode sheet is determined by calculation and analysis based on the detected current signal and the preset oxidation repair strategy. Based on the comparison between the oxidation repair coefficient and the preset good oxidation coefficient, it is determined whether to stop the oxidation repair of the electrode sheet or continue the oxidation repair of the electrode sheet.

3. The AC charger on / off adjustment method according to claim 2, characterized in that, The following formula is used when calculating the oxidative remediation strategy: ； in Indicates the oxidation repair coefficient. This represents the oxidation rate constant under the action of friction per unit time. This indicates the contact pressure applied during the friction treatment of the electrode plates by the oxidation repair device. Indicates friction time. Indicates the number of friction cycles. This represents the oxidation repair ratio coefficient for each friction cycle.

4. The AC charger on / off adjustment method according to claim 2, characterized in that, Determining the oxidation repair coefficient of the electrode sheet also includes: The difference in oxidation coefficients is determined by calculation based on the oxidation repair coefficient and the oxidation coefficient of the electrode sheet; When the difference in oxidation coefficients is within a preset small difference range, the repair friction force value of the difference in oxidation coefficients is matched with that in the preset oxidation friction database; The repair friction force value and the magnetic attraction force are compared. When the repair friction force value is less than the attraction force, the signal of the charger being released when it is pulled out of the charging pile is collected. The magnetic attraction device releases the electrode plate based on the release signal indication.

5. The AC charger on / off adjustment method according to claim 4, characterized in that, When the charger is unplugged from the charging station, the signal is collected, including: The charger pressure value of the preset trip unit is analyzed to determine the rate of change of the charger pressure value. When the rate of change of pressure value is less than or equal to the preset rate of change of pressure value at rest, the preset magnetic attraction device is instructed to maintain the adsorption of the electrode plate. When the rate of change of pressure value is greater than the preset rate of change of pressure value at rest, a release signal is sent.

6. An AC charger on / off adjustment system, characterized in that, include: The acquisition module collects and analyzes the clamping force of the preset trip unit on the charger electrode plates. When the clamping force is within the preset stable clamping range, it monitors the charging current of the charger. The current analysis module analyzes the charging current to determine the current signal. When the current signal is consistent with the preset battery full charge signal, it issues a resistance adjustment command to increase the resistance of the preset adjustment resistor, thereby reducing the current transmitted to the battery. When the charging current is within the preset safe current range, the preset trip unit is instructed to reduce the clamping force on the electrode plate. When the preset trip unit reduces the clamping force on the electrode sheet, it includes: The number of electrode plates in the charger is analyzed to determine the number of clamping plates. Match the electrode release sequence corresponding to the number of clamped electrodes in the preset release database, and instruct the preset release device to reduce the clamping force in sequence according to the release sequence; When the clamping force of each electrode plate on the trip unit is within the preset release clamping force range, the preset trip unit is instructed to adjust the clamping force to the preset stable clamping range. When the clamping force is reduced sequentially according to the tripping sequence, it includes: The charging temperature during the charging process of the charger is collected, and the electrode oxidation coefficient corresponding to the charging temperature is determined by calculating according to the preset electrode oxidation calculation strategy. When the oxidation coefficient of the electrode sheet is greater than the preset good oxidation coefficient, the preset oxidation repair device is instructed to perform surface friction treatment on the electrode sheet. The electrode oxidation calculation strategy uses the following formula: ； ； in, Indicates the oxidation coefficient of the electrode sheet. This represents the thermal conductivity of the electrode plate. This represents the coefficient indicating the effect of temperature on the oxidation rate of the electrode sheet. This represents the temperature function of the electrode plate as a function of charging time. This indicates the initial temperature of the electrode plate. Indicates the rate of temperature rise of the electrode sheet; The on / off control module analyzes whether the current signal is consistent with the preset stop charging signal when the clamping force decreases to within the preset release clamping force range. If they are consistent, it instructs the preset magnetic attraction device to attract the charger electrode plate.

Images