Maintenance method and system of battery pack loop

Abstract

The invention relates to a battery pack loop maintenance method and system, and relates to the technical field of batteries, and the method comprises the steps: collecting the detection voltage and detection parameters of each battery in a battery pack; obtaining a voltage average value according to the detection voltage and a preset battery number; obtaining an adaptive voltage difference based on the detection parameter and the detection voltage; calculating the sum of the voltage average value and the adaptive voltage difference as a detection threshold value; and when the detection voltage exceeds the detection threshold value, the battery with the detection voltage is defined as a discharge battery, and the discharge battery is discharged at a preset discharge voltage. The application has the effect of reducing the over-discharge condition of the battery so as to improve the balance of the voltage of the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a method and system for maintaining a battery pack circuit. Background Art

[0002] A battery is a device that converts chemical energy or other forms of energy directly into electrical energy to power electrical devices.

[0003] Substations are typically equipped with battery packs to maintain their operation. During operation, different batteries age to varying degrees, generating varying voltages. When the voltage of a cell in the pack exceeds a preset threshold, a discharge resistor, pre-installed on the battery, triggers discharge. The battery discharges through the resistor until the voltage returns to normal, at which point discharge ceases.

[0004] During voltage maintenance at a substation, using a fixed threshold to determine voltage discharge can lead to misidentification of the battery voltage at the end of charging, forcing batteries that could continue to be charged to discharge, resulting in over-discharge. Summary of the Invention

[0005] In order to reduce the over-discharge of batteries and improve the voltage balance of a battery pack, the present invention provides a method and system for maintaining a battery pack circuit.

[0006] In a first aspect, the present invention provides a method for maintaining a battery circuit, which adopts the following technical solution: A method for maintaining a battery circuit, comprising: S10: collecting detection voltage and detection parameters of each battery in the battery pack; S11: Obtaining an average voltage value based on the detected voltage and a preset number of batteries; S12: Obtaining an adapted voltage difference based on the detection parameter and the detection voltage; S13: Calculate the sum of the voltage average value and the adaptation voltage difference as the detection threshold; S14: When the detection voltage exceeds the detection threshold, the battery with the detection voltage is defined as a discharge battery, and the discharge battery is discharged at a preset discharge voltage.

[0007] By adopting the above technical solution, the detection voltage and detection parameters are analyzed to obtain a detection threshold. When the detection voltage exceeds the detection threshold, the discharge battery is discharged to reduce the over-discharge of the battery and improve the balance of the battery pack voltage.

[0008] Optionally, also include: S20: Update detection voltage; S21: Calculate the difference between the detection voltage before and after the update as the voltage change rate; S22: When the voltage change rate is less than a preset reference change rate, collecting the battery type; S23: Matching negative pulse parameters according to the battery type, and controlling the preset detection device to output with the negative pulse parameters.

[0009] By adopting the above technical solution, the end of charging is identified by monitoring the voltage change rate, the negative pulse parameters are matched according to the battery type, and the negative pulse excitation is used to weaken the charging gassing, thereby improving the balance of the battery pack voltage and the charging efficiency.

[0010] Optionally, the voltage detection verification method includes: S30: When the voltage change rate exceeds a preset abnormal change rate, the connection position and detection specifications of the detection device are collected; S31: Retrieve the connector type from the test specification; S32: Matching the clamping parameters according to the joint type, and controlling the preset clamping device to remove the joint at the detection position according to the clamping parameters and move it to the preset detection position; S33: collecting image detection information of the detection position; S34: Identifying the type and location of the foreign object from the image detection information; S35: When the foreign object type is a preset erasing type, obtaining an insertion position according to the position of the foreign object; S36: Identify erasing force by foreign body type; S37: When the erasing force exceeds the preset reference force, a thin line insertion parameter is obtained according to the erasing force and the insertion position, and the preset thin line extension device is controlled to operate according to the thin line insertion parameter.

[0011] By adopting the above technical solution, when the voltage change rate is abnormal, the connector is removed through the clamping device, foreign objects are identified by image, and foreign objects that can be wiped inside the connector are cleaned with a fine wire, thereby reducing poor contact of the sensor connector due to foreign objects, ensuring that the detected voltage truly reflects the battery status, and automatically removing foreign objects to ensure that the voltage can continue to be detected.

[0012] Optionally, methods for obtaining thin line extension parameters include: S40: Retrieve pinout specifications from connector type; S41: Divided into various extension ranges based on the pin distribution specifications and the location of foreign matter; S42: Obtain the number of pins by extending the range and pin distribution specifications; S43: Obtain a marking range based on the number of pins and the location of the foreign object; S44: Obtain the extension direction by marking the range and the insertion position; S45: Calculate the difference between the erasing force and the reference force as the blocking force; S46: Obtain the thin wire extension parameter according to the blocking force and the extension direction.

[0013] Optionally, also include: S50: Obtaining a rotation direction according to the extension direction and the insertion position, and controlling the thin wire extending device to rotate the thin wire according to the rotation direction; S51: Update image detection information; S52: When a preset thin line extension feature is recognized in the image detection information, a marker pin position within the marking range is identified from the image detection information; S53: Obtaining various extension paths according to the marked pin positions, the preset extension method, and the preset offset angle range; S54: Obtain the thin line insertion parameters by extending the path and rotating the direction.

[0014] Optionally, also include: S60: identifying the contact area from the extended path; S61: combining the extension path with the preset thin wire specification to obtain the thin wire positive pressure; S62: Obtaining the friction coefficient based on the contact area; S63: The extension friction force is obtained by the friction coefficient and the normal pressure of the thin wire; S64: The shortest extension path with the extension friction force consistent with the blocking force is used as the marking path; S65: Get thin line extension parameters based on the marked path.

[0015] Optionally, a method for determining the extension path includes: S70: identifying a thin line extension distance from the image detection information; S71: The rebound force is obtained by the extension distance of the thin wire and the thin wire specifications; S72: deriving joint friction based on rebound force and joint type; S73: Obtaining a tilt angle range by using the joint friction force, a preset detection rotation speed range, and a thin wire specification; S74: Obtaining various connection angles according to the tilt angle range and the marked pin positions; S75: The spacing distance is determined based on the connection angle and pin distribution specifications; S76: updating the offset angle range based on the spacing distance and the position of the marking pin, and obtaining the tilt position according to the maximum offset angle range; S77: Combine the connection angle, tilt position and spacing distance to obtain the extension path.

[0016] Optionally, also include: S80: When the maximum offset angle range is smaller than the preset reference tilt angle, the tilt amount is obtained by using the maximum offset angle range and the tilt position; S81: combining the connection angle, the tilt position, and the spacing distance to obtain a detection path; S82: Get pin specification from connector type; S83: Obtaining the detection contact area based on the pin specifications and connection angle; S84: Get the positive pressure by connecting the angle and the wire size; S85: Obtaining a detected friction force based on the detected positive pressure and the detected contact area; S86: Obtaining a marked friction force according to the tilt amount and the detected friction force; S87: Obtain an extended path by marking the friction force and the detection path.

[0017] Optionally, also include: S90: Using the detection path of the marking friction force greater than the blocking force as the marking path; S91: Retrieve the marker extension distance from the marker path; S92: Get the maximum extension distance by marking the range and tilt position; S93: Using the mark path corresponding to the mark extension distance that is smaller than the maximum extension distance as the extension path.

[0018] In a second aspect, the present application provides a battery pack circuit maintenance system, which adopts the following technical solutions: A battery circuit maintenance system, comprising: An acquisition module is used to obtain detection voltage and detection parameters; A memory for storing a program for a maintenance method of a battery pack circuit; The processor is configured to load and execute the program stored in the memory.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. The detection threshold is obtained by analyzing the detection voltage and detection parameters. When the detection voltage exceeds the detection threshold, the discharge battery is discharged to reduce the over-discharge of the battery and improve the balance of the battery pack voltage; 2. Identify the end of charging by monitoring the voltage change rate, match the negative pulse parameters according to the battery type, and use negative pulse excitation to weaken charging gassing, thereby improving the balance of battery pack voltage and charging efficiency; 3. When the voltage change rate is abnormal, the connector is removed by the clamping device, foreign objects are identified by image, and a fine line is used to clean the connector to eliminate foreign objects that can be wiped away. This reduces poor contact of the sensor connector due to foreign objects, ensures that the detected voltage truly reflects the battery status, and automatically removes foreign objects to ensure that voltage detection can continue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a method flow of a battery pack circuit maintenance method according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a method flow of a battery pack circuit maintenance method according to an embodiment of the present invention. Figure 2 . DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1 , the embodiment of the present application discloses a method for maintaining a battery pack circuit, comprising the following steps: S10: Collecting the detection voltage and detection parameters of each battery in the battery pack.

[0023] The detection voltage refers to the real-time voltage of each battery in the battery pack, and is a parameter detected by a voltage sensor connected to the battery.

[0024] The detection parameters refer to the real-time temperature, internal resistance, current and health status of each battery in the battery pack. The temperature, internal resistance, current and health status of the battery are calculated and detected by the composite battery sensor connected to the battery and the external Hall sensor, and the detection results are combined to obtain the detection parameters.

[0025] S11: Obtaining an average voltage value based on the detected voltage and the preset number of batteries.

[0026] The number of batteries is the total number of single cells in the battery pack set by the technician.

[0027] The average voltage refers to the arithmetic mean of the real-time voltages of all cells in the battery pack. This is calculated by analyzing the detected voltages and the number of cells. The method for calculating the average voltage is well known to those skilled in the art and will not be elaborated on here.

[0028] S12: Obtaining an adapted voltage difference based on the detection parameter and the detection voltage.

[0029] Adaptive voltage difference refers to the voltage balancing threshold that is dynamically adjusted in real time according to the battery status. The voltage change value of the detection voltage is retrieved by detecting the voltage, and the adaptive voltage difference is matched from the preset battery comparison table by the voltage change value and the detection parameters.

[0030] In this embodiment, the adaptive pressure difference setting range is 10mV to 20mV. The adaptive pressure difference setting range can be set in advance by the operator and will not be described in detail here.

[0031] The battery comparison table stores the adaptive voltage differentials corresponding to different voltage change values ​​and test parameters. When the health state in the test parameters is high health, the internal resistance is low, and the voltage change increases, the adaptive voltage differential can be 10mV. Conversely, the adaptive voltage differential is 20mV. The parameters in the battery comparison table are set by those skilled in the art based on actual conditions and are not detailed here.

[0032] S13: Calculate the sum of the voltage average value and the adaptation voltage difference as the detection threshold.

[0033] The detection threshold refers to the voltage critical value for determining whether a single cell battery needs to be balanced. The detection threshold is calculated by calculating the sum of the average voltage and the adaptive voltage difference.

[0034] S14: When the detection voltage exceeds the detection threshold, the battery with the detection voltage is defined as a discharge battery, and the discharge battery is discharged at a preset discharge voltage.

[0035] The discharge voltage is the voltage set by technicians for discharging a battery. A discharge battery is a battery that needs to be discharged. When the detection voltage exceeds the detection threshold, it indicates that the battery needs to be discharged. The battery with a detection voltage exceeding the detection threshold is defined as a discharge battery and is discharged at the discharge voltage. The voltage of other batteries is increased due to system clamping.

[0036] Reference Figure 2 , also includes: S20: Update the detection voltage.

[0037] Re-collect the detection voltage.

[0038] S21: Calculate the difference between the detection voltages before and after the update as the voltage change rate.

[0039] The voltage change rate refers to the rate at which the detection voltage changes. The voltage change rate is calculated by calculating the difference between the detection voltage before and after the update.

[0040] S22: When the voltage change rate is less than a preset reference change rate, the battery type is collected.

[0041] The reference rate of change is a voltage change threshold value set by technicians to determine whether the battery has entered the final stage of charging.

[0042] The battery type refers to the battery's chemical type and specification parameters. When the voltage change rate is less than the reference change rate, it indicates that the battery is about to be saturated and charging optimization needs to be initiated. The operator pre-enters the battery's chemical type and specification parameters as the battery type.

[0043] S23: Matching negative pulse parameters according to the battery type, and controlling the preset detection device to output with the negative pulse parameters.

[0044] The detection device refers to a composite battery sensor, which has an adjustable negative pulse excitation function and is an output carrier of the negative pulse.

[0045] Negative pulse parameters refer to the reverse pulse electrical signal characteristics used for charging optimization. Negative pulse parameters include pulse amplitude, pulse width, pulse frequency and other parameters. Negative pulse parameters are matched from the battery comparison table according to the battery type, and the detection device is controlled to output with negative pulse parameters.

[0046] The battery comparison table also stores negative pulse parameters corresponding to different battery types, which will not be described in detail here.

[0047] The calibration methods for the detection voltage include: S30: When the voltage change rate exceeds a preset abnormal change rate, the connection position and detection specifications of the detection device are collected.

[0048] The abnormal change rate is a critical rate set by technicians to determine whether the detection voltage has abnormal fluctuations.

[0049] The connection position refers to the position where the detection device is connected to the connector, and the detection specification refers to the device specification of the detection device. When the voltage change rate exceeds the abnormal change rate, it means that a foreign object has appeared in the connector of the detection device, and the connection position and detection specification pre-entered by the operator are retrieved.

[0050] S31: Retrieve the connector type from the test specifications.

[0051] The connector type refers to the structural characteristic type of the connector on the detection device, and the connector type is retrieved from the detection specification. In this embodiment, the connector is square, and a groove for arranging metal pins is opened inside the square, and the metal pins are regularly arranged in the connector.

[0052] S32: Matching the clamping parameters according to the joint type, and controlling the preset clamping device to remove the joint at the detection position according to the clamping parameters and move it to the preset detection position.

[0053] The clamping device is a pre-set mechanical claw. The detection position is the position set by the technician to detect whether there is foreign matter in the joint.

[0054] Gripping parameters refer to the force and position used to grip and remove the connector on the detection device. These parameters are matched to the connector type from a pre-set connector comparison table. In this embodiment, the connector is pluggable, so the gripper grips the connector and removes it with a certain force in the opposite direction of insertion.

[0055] S33: Collect image detection information of the detection position.

[0056] The image detection information refers to an image of a metal pin in a connector at a detection position, which can be obtained by capturing the image with a camera set at the detection position.

[0057] S34: Identify the type and location of the foreign object from the image detection information.

[0058] Foreign matter type refers to the type of foreign matter on the metal pins. Examples include dust, metal debris, oil, and fiber. Different foreign matter types determine the removal method (e.g., hard foreign matter requires sweeping, while oily foreign matter requires scraping).

[0059] The foreign object location refers to the location of the foreign object on the metal pin. The foreign object location and type are identified from the image detection information. The method of image recognition of the type and location of foreign objects is common knowledge to those skilled in the art and will not be elaborated here.

[0060] S35: When the foreign object type is a preset erasing type, the insertion position is obtained according to the position of the foreign object.

[0061] The erasing type is the type of foreign matter that can be erased, set by the technician, such as dust, oil, and fiber.

[0062] The insertion position refers to the position for inserting the thin wire. When the foreign body type is an erasable type, it means that the foreign body can be erased, and the foreign body position is used as the insertion position. In this embodiment, the thin wire is a nylon wire with resilience.

[0063] S36: Identify the erasing force by the type of foreign matter.

[0064] Erasing force refers to the force required to erase foreign matter. The required erasing force is obtained by analyzing the adhesion of the foreign matter, and the erasing force is matched from a preset foreign matter comparison table based on the type of foreign matter.

[0065] The foreign body comparison table stores the corresponding erasing forces for different foreign body types in different states (concentration, size, etc.). The parameters in the foreign body comparison table are set by those skilled in the art based on actual conditions and will not be described in detail here.

[0066] S37: When the erasing force exceeds the preset reference force, a thin line insertion parameter is obtained according to the erasing force and the insertion position, and the preset thin line extension device is controlled to operate according to the thin line insertion parameter.

[0067] The reference force is the force set by the technician at which the thin wire undergoes elastic deformation.

[0068] The thin wire extending device can be a wire drum, a rotating motor and other devices.

[0069] The fine wire insertion parameters refer to the parameters that control the contact and abutment of the fine wire insertion connector at the end of each pin. The fine wire insertion parameters include the insertion position, the direction of rotation along the fine wire axis, the rotation speed, the path of the fine wire movement, etc. When the erasing force exceeds the reference force, it means that the fine wire will elastically deform when wiping the foreign object, making it difficult to erase the foreign object. The fine wire insertion parameters are obtained by analyzing the erasing force and the insertion position, and the fine wire extension device is controlled to operate as a fine wire extension device. Therefore, after the fine wire is inserted, the fine wire extension device can be controlled to wipe the foreign object position.

[0070] Methods for obtaining the thin line extension parameters include: S40: Retrieve pinout specifications from connector type.

[0071] The pinout specification refers to the spatial arrangement characteristics of the pins within a connector. The pinout specification includes the number of pins, pitch, arrangement, pin diameter, and pin height. The pinout specification is retrieved from the connector type.

[0072] S41: Divided into extension ranges based on the position of foreign matter based on pin distribution specifications.

[0073] The extension range refers to the range within which the thin wire can be extended. Based on the position of the foreign object, the surrounding pin distribution is divided into rectangular areas, and the divided areas are regarded as the extension range.

[0074] S42: Get the pin count by extending the range and pinout specifications.

[0075] The number of pins refers to the total number of pins included in the extended range, and the number of pins in the extended range is obtained from the pin distribution specification as the pin number.

[0076] S43: Obtain a marking range based on the number of pins and the location of the foreign object.

[0077] The marking range is the extended range with the largest number of pins or closest to the foreign object. By comparing the number of pins in each extended range, the extended range with the largest number of pins is used as the marking range. If two ranges have the same maximum number of pins, the extended range closest to the foreign object and with the largest number of pins is used as the marking range.

[0078] S44: Obtain the extension direction by marking the range and the insertion position.

[0079] The extension direction refers to the direction in which the thin line extends from the insertion position toward the marking range. The straight line direction obtained by analyzing the position of the marking range and the insertion position is used as the extension direction.

[0080] S45: Calculate the difference between the erasing force and the reference force as the blocking force.

[0081] The stopping force refers to the force required to prevent the end of the thin wire inserted into the connector from moving, and the difference between the erasing force and the reference force is calculated as the stopping force. In this embodiment, the end of the thin wire inserted into the connector is defined as the insertion end of the thin wire.

[0082] S46: Obtain the thin wire extension parameter according to the blocking force and the extension direction.

[0083] The thin wire insertion parameters are obtained by analyzing the blocking force and extension direction.

[0084] Also includes: S50: Obtain the rotation direction through the extension direction and the insertion position, and control the thin wire extending device to rotate the thin wire according to the rotation direction.

[0085] In this embodiment, the thin line extends toward the marked inner side wall of the connector, where the marked inner side wall refers to the inner side wall to which the end of the metal pin is fixed.

[0086] The rotation direction refers to the direction in which the thin wire rotates along its own axis. The rotation direction includes clockwise or counterclockwise, and the rotation direction is used to control the thin wire extending device to rotate the thin wire.

[0087] S51: Update image detection information.

[0088] Re-collect image detection information.

[0089] S52: When a preset thin line extension feature is recognized in the image detection information, a marker pin position within the marking range is recognized from the image detection information.

[0090] The thin line extension feature is a feature set by technicians that the thin line abuts against the inner wall of the mark and bends and slides on the inner wall of the mark.

[0091] The marked pin position refers to the pin position within the marking range. When a preset thin line extension feature is identified in the image detection information, it indicates that the extended end of the thin line abuts the inner wall of the mark and bends and slips on the inner wall of the mark. The pin position within the marking range is identified from the image detection information as the marked pin position.

[0092] S53: Obtaining various extension paths according to the marked pin positions, the preset extension method, and the preset offset angle range.

[0093] The extension method is a method of winding a thin wire around a pin set by a technician. The extension method is to wind the wire in a way that uses the pin to prevent elastic deformation, and the pin always prevents the wire from becoming a straight line due to its own rebound.

[0094] The offset angle range is the angle range set by the technicians within which the thin wire can be offset by rotation, and the offset angle range is the angle range within which no plastic deformation of the thin wire occurs when the thin wire is wound around the metal pin.

[0095] The extension path refers to a path along which the thin wire is extended in an extended manner and within a corresponding offset angle range, and different marking pin positions around the insertion position have different extension paths.

[0096] S54: Obtain the thin line insertion parameters by extending the path and rotating the direction.

[0097] The thin wire insertion parameters are obtained by analyzing the extension path and rotation direction.

[0098] Also includes: S60: Identifying a contact area from the extended path.

[0099] The contact area is the area of ​​contact between the thin wire and each metal pin in the extension path. The contact area is obtained by analyzing the extension path. The contact area analysis method can be determined by the subsequent extension path analysis method.

[0100] S61: Combining the extension path with the preset thin line specification to obtain the thin line positive pressure.

[0101] The fine wire specifications are the parameters set by the technicians. The fine wire positive pressure refers to the positive pressure exerted on the metal pin by the rebound of the fine wire when it is wrapped around the metal pin.

[0102] S62: Obtain the friction coefficient based on the contact area.

[0103] The friction coefficient refers to the friction coefficient between the thin wire and the metal pin. The friction coefficient is matched from a preset friction reference table through the contact area. The friction reference table stores the friction coefficients corresponding to different contact areas. The larger the contact area, the greater the friction coefficient. The parameters in the friction reference table are set in advance by technical personnel in this field based on actual conditions, and will not be elaborated here.

[0104] S63: The extension friction force is obtained by the friction coefficient and the normal pressure of the fine wire.

[0105] Extension friction refers to the sliding friction generated when the thin wire contacts the sidewall of the lead. The extension friction is calculated by combining the friction coefficient and the normal pressure of the thin wire. The calculation method of extension friction is common knowledge among those skilled in the art and will not be elaborated here.

[0106] S64: The shortest extension path with the extension friction force consistent with the blocking force is used as the marking path.

[0107] The marking path refers to the path along which the fine wire will eventually move and wind, and the shortest extension path with the extension friction force that is consistent with the resistance force is used as the marking path.

[0108] S65: Get thin line extension parameters based on the marked path.

[0109] The parameters corresponding to the extension direction and the marked path of the thin line are used as the thin line extension parameters.

[0110] The thin wire insertion parameters include extension direction, marking path, foreign body position, insertion position, maximum offset angle range, and rotation direction (when the thin wire is wound in an extended manner, the direction changes and the rotation direction also changes), so that the thin wire can be controlled to move and wrap inside the pin.

[0111] Methods for determining the extension path include: S70: Identify the thin line extension distance from the image detection information.

[0112] The thin line extension distance refers to the distance that the thin line appears to extend on the inner wall of the joint, and the thin line extension distance is identified from the image detection information.

[0113] S71: The rebound force is obtained by the extension distance of the thin wire and the thin wire specifications.

[0114] Rebound strength refers to the elastic recovery force generated by a thin wire due to bending. It is determined by analyzing the wire's extension distance and wire specifications. The analysis method for rebound strength is well known to those skilled in the art and will not be detailed here.

[0115] S72: Get joint friction based on rebound force and joint type.

[0116] Joint friction refers to the friction between the thin wire and the inner wall of the joint. The joint friction is obtained by analyzing the rebound force and the friction coefficient between the material of the inner wall of the joint and the thin wire.

[0117] S73: Obtain the tilt angle range through the joint friction force, the preset detection rotation speed range, and the fine wire specification.

[0118] The test rotation speed range is the speed range set by technicians for the thin wire to rotate along its own axis. Within the test rotation speed range, the faster the speed, the greater the friction coefficient.

[0119] The tilt angle range refers to the angle range when the thin wire bends after being wrapped around the pin. The tilt angle range is matched from the friction comparison table through the joint friction, the preset detection rotation speed range and the thin wire specifications. The friction comparison table also stores different joint frictions and preset detection rotation speed ranges and tilt angle ranges corresponding to thin wire specifications. The greater the joint friction, the greater the force that can resist the rebound of the thin wire when it rotates, and the larger the tilt angle range. I will not go into details here.

[0120] S74: Obtain various connection angles according to the tilt angle range and the marked pin positions.

[0121] The connection angle refers to the angle at which the wire must be tilted to contact the marking pin. For example, if the wire is tilted at the insertion position, the wire can be extended to different marking pin positions at 10 or 30 degrees for winding. If the angle of 10 or 30 degrees is within the tilt angle range, then the connection angle is 10 or 30 degrees.

[0122] S75: The spacing distance is obtained based on the connection angle and pin distribution specifications.

[0123] The spacing distance refers to the distance between the marked pin position and the thin wire when it extends to the marked pin position at different connection angles. The spacing distance is obtained by analyzing the connection angle and the pin distribution specifications. The analysis method of the spacing distance is common knowledge to those skilled in the art and will not be elaborated here.

[0124] S76: Update the offset angle range based on the spacing distance and the position of the marking pin, and obtain the tilt position according to the maximum offset angle range.

[0125] The tilt position refers to the marker pin position that the thin wire can reach due to tilt. A new offset angle range is determined from a preset thin wire comparison table using the spacing distance and the number of marker pin positions. The marker pin position within the maximum offset angle range is then used as the tilt position. The analysis method for the tilt position is well known to those skilled in the art and will not be elaborated here.

[0126] The thin line comparison table stores the offset angle ranges corresponding to different spacing distances and marker pin positions. The smaller the spacing distance, the greater the number of marker pin positions, the greater the constraint on the directional deviation of the thin line, and the smaller the offset angle range. The parameters in the thin line comparison table are set by those skilled in the art based on actual experimental conditions and are not detailed here.

[0127] S77: Combine the connection angle, tilt position and spacing distance to obtain the extension path.

[0128] The extension path is obtained by analyzing the connection angle, tilt position and spacing distance.

[0129] Also includes: S80: When the maximum offset angle range is smaller than the preset reference tilt angle, the tilt amount is obtained by using the maximum offset angle range and the tilt position.

[0130] The reference tilt angle is the minimum angle value set by the technician for the thin wire to be wound in an extended manner.

[0131] The tilt amount refers to the amount that the thin wire can tilt when winding at a tilt position and a maximum offset angle range.

[0132] When the maximum offset angle range is smaller than the reference tilt angle, it indicates that the thin wire cannot continue to be extended and wound, and the thin wire is wound starting from the extended position, and the number of tilt positions corresponding to the maximum offset angle range not smaller than the reference tilt angle is taken as the tilt number.

[0133] S81: Combine the connection angle, the tilt position, and the spacing distance to obtain a detection path.

[0134] The test path is the path along which the thin wire is wound at an angle at different angles and spacings. The test path is determined by analyzing the connection angle, angle, and spacing.

[0135] For example, the two columns of pins are A1, A2, A3, and B1, B2, B3. The thin wire is wrapped around the two columns of pins in the extended position. When the thin wire is offset at an angle of 10 degrees, the thin wire can be wrapped in an S shape on A1, A2, A3 or B1, B2, B3. When the thin wire is offset at an angle of 30 degrees, the thin wire can be wrapped from A1 to B2, and then wrapped from B2 to A3. The more pins are wrapped, the thin wire can only be wrapped around one column of pins. The paths A1, A2, A3, B1, B2, B3 formed by the above winding and the winding path formed by A1, B2, A3 are used as detection paths.

[0136] S82: Get pin specification from connector type.

[0137] Pin specifications refer to the parameter specifications of the pins, including pin diameter, column spacing, pin spacing within a single column, and pin size.

[0138] S83: Obtain the detection contact area based on the pin specifications and connection angle.

[0139] The contact area is the area of ​​contact between a single pin and a thin wire when the wire is wrapped around it at a connection angle. This area is determined by analyzing the pin specifications and connection angle. The analysis method for contact area is well known to those skilled in the art and will not be detailed here.

[0140] S84: By connecting the angle and the fine wire specifications to obtain the detection positive pressure.

[0141] The positive pressure test refers to the springback force exerted on a single pin by a thin wire wrapped at a connection angle. This force is determined by analyzing the connection angle and the wire specifications. The analysis method for positive pressure testing is well known to those skilled in the art and will not be detailed here.

[0142] S85: Obtaining the detected friction force based on the detected normal pressure and the detected contact area.

[0143] The friction force detected refers to the friction between a single pin and a thin wire. This force is determined by matching the measured positive pressure and the measured contact area with a friction comparison table. The friction comparison table also stores the friction forces corresponding to different positive pressures and contact areas. The greater the positive pressure, the larger the contact area, and the greater the friction force. This information is not detailed here.

[0144] S86: Obtaining a marked friction force according to the tilt amount and the detected friction force.

[0145] Marking friction refers to the friction generated by all pins on the thin wire when the thin wire is wound. The marking friction is matched from the friction comparison table by the tilt amount and the detected friction. The friction comparison table also stores the marking friction corresponding to different tilt amounts and detected friction. The greater the tilt amount, the greater the detected friction and the marking friction. I will not go into details here.

[0146] S87: Obtain an extended path by marking the friction force and the detection path.

[0147] The extension path is obtained by analyzing the marking friction force and the detection path.

[0148] Also includes: S90: The detection path of the marking friction force greater than the blocking force is used as the marking path.

[0149] The marking path refers to a detection path of a marking friction force greater than the blocking force, and the detection path of a marking friction force greater than the blocking force is used as the marking path.

[0150] S91: Retrieve the marker extension distance from the marker path.

[0151] The mark extension distance refers to the straight-line distance that the thin wire is extended and wound, and the mark extension distance is retrieved from the mark path.

[0152] S92: Get the maximum extension distance by marking the range and tilt position.

[0153] The maximum extension distance is the maximum straight-line distance that the marked range can be extended by winding at an inclined position. The maximum extension distance is determined by analyzing the marked range and the inclined position. The analysis method of the maximum extension distance is common knowledge among those skilled in the art and will not be elaborated here.

[0154] S93: Using the mark path corresponding to the mark extension distance that is smaller than the maximum extension distance as the extension path.

[0155] The mark path corresponding to the mark extension distance that is smaller than the maximum extension distance is used as the extension path.

[0156] Based on the same inventive concept, an embodiment of the present invention provides a battery pack circuit maintenance system, including: An acquisition module is used to obtain detection voltage, detection parameters, battery type, connection position, detection specifications, and image detection information; A memory for storing a program for a maintenance method of a battery pack circuit; The processor is configured to load and execute the program stored in the memory.

[0157] Those skilled in the art will clearly understand that for the sake of convenience and brevity, the division of the above-mentioned functional modules is only used as an example for illustration. In actual applications, the above-mentioned 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 processes of the above-mentioned systems, devices, and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0158] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for maintaining a battery circuit, characterized in that: include: S10: collecting detection voltage and detection parameters of each battery in the battery pack; S11: Obtaining an average voltage value based on the detected voltage and a preset number of batteries; S12: Obtaining an adapted voltage difference based on the detection parameter and the detection voltage; S13: Calculate the sum of the voltage average value and the adaptation voltage difference as the detection threshold; S14: When the detection voltage exceeds the detection threshold, the battery with the detection voltage is defined as a discharge battery, and the discharge battery is discharged at a preset discharge voltage.

2. A battery circuit maintenance method according to claim 1, characterized in that: Also includes: S20: Update detection voltage; S21: Calculate the difference between the detection voltage before and after the update as the voltage change rate; S22: When the voltage change rate is less than a preset reference change rate, collecting the battery type; S23: Matching negative pulse parameters according to the battery type, and controlling the preset detection device to output with the negative pulse parameters.

3. A battery circuit maintenance method according to claim 2, characterized in that: The calibration methods for the detection voltage include: S30: When the voltage change rate exceeds a preset abnormal change rate, the connection position and detection specifications of the detection device are collected; S31: Retrieve the connector type from the test specification; S32: Matching the clamping parameters according to the joint type, and controlling the preset clamping device to remove the joint at the detection position according to the clamping parameters and move it to the preset detection position; S33: Collecting image detection information of the detection position; S34: Identifying the type and location of the foreign object from the image detection information; S35: When the foreign object type is a preset erasing type, obtaining an insertion position according to the position of the foreign object; S36: Identify erasing force by foreign body type; S37: When the erasing force exceeds the preset reference force, a thin line insertion parameter is obtained according to the erasing force and the insertion position, and the preset thin line extension device is controlled to operate according to the thin line insertion parameter.

4. A battery circuit maintenance method according to claim 3, characterized in that: Methods for obtaining the thin line extension parameters include: S40: Retrieve pinout specifications from connector type; S41: Divided into various extension ranges based on the pin distribution specifications and the location of foreign matter; S42: Obtain the number of pins by extending the range and pin distribution specifications; S43: Obtain a marking range based on the number of pins and the location of the foreign object; S44: Obtain the extension direction by marking the range and the insertion position; S45: Calculate the difference between the erasing force and the reference force as the blocking force; S46: Obtain the thin wire extension parameter according to the blocking force and the extension direction.

5. A battery circuit maintenance method according to claim 4, characterized in that: Also includes: S50: Obtaining a rotation direction according to the extension direction and the insertion position, and controlling the thin wire extending device to rotate the thin wire according to the rotation direction; S51: Update image detection information; S52: When a preset thin line extension feature is recognized in the image detection information, a marker pin position within the marking range is identified from the image detection information; S53: Obtaining various extension paths according to the marked pin positions, the preset extension method, and the preset offset angle range; S54: Obtain the thin line insertion parameters by extending the path and rotating the direction.

6. A battery circuit maintenance method according to claim 5, characterized in that: Also includes: S60: identifying the contact area from the extended path; S61: combining the extension path with the preset thin wire specification to obtain the thin wire positive pressure; S62: Obtaining the friction coefficient based on the contact area; S63: The extension friction force is obtained by the friction coefficient and the normal pressure of the thin wire; S64: The shortest extension path with the extension friction force consistent with the blocking force is used as the marking path; S65: Get thin line extension parameters based on the marked path.

7. A battery circuit maintenance method according to claim 5, characterized in that: Methods for determining the extension path include: S70: identifying the thin line extension distance from the image detection information; S71: The rebound force is obtained by the extension distance of the thin wire and the thin wire specifications; S72: deriving joint friction based on rebound force and joint type; S73: Obtaining a tilt angle range by using the joint friction force, a preset detection rotation speed range, and a thin wire specification; S74: Obtaining various connection angles according to the tilt angle range and the marked pin positions; S75: The spacing distance is obtained based on the connection angle and pin distribution specifications; S76: updating the offset angle range based on the spacing distance and the position of the marking pin, and obtaining the tilt position according to the maximum offset angle range; S77: Combine the connection angle, tilt position and spacing distance to obtain the extension path.

8. A battery circuit maintenance method according to claim 7, characterized in that: Also includes: S80: When the maximum offset angle range is smaller than the preset reference tilt angle, the tilt amount is obtained by using the maximum offset angle range and the tilt position; S81: combining the connection angle, the tilt position, and the spacing distance to obtain a detection path; S82: Get pin specification from connector type; S83: Obtaining the detection contact area based on the pin specifications and connection angle; S84: Get the positive pressure by connecting the angle and the wire size; S85: Obtaining a detected friction force based on the detected positive pressure and the detected contact area; S86: Obtaining a marked friction force according to the tilt amount and the detected friction force; S87: Obtain an extended path by marking the friction force and the detection path.

9. A method for maintaining a battery circuit according to claim 8, characterized in that: Also includes: S90: Using the detection path of the marking friction force greater than the blocking force as the marking path; S91: Retrieve the marker extension distance from the marker path; S92: Get the maximum extension distance by marking the range and tilt position; S93: Using the mark path corresponding to the mark extension distance that is smaller than the maximum extension distance as the extension path.

10. A battery circuit maintenance system, characterized in that: include: An acquisition module is used to obtain detection voltage and detection parameters; A memory for storing a program for implementing a battery circuit maintenance method according to any one of claims 1 to 9; The processor is configured to load and execute the program stored in the memory.

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