Battery charging control system and control method

Abstract

The invention provides a battery charging control system and control method, and relates to the technical field of rail transit. The control system comprises an energy storage monitoring unit, a central control unit, a traction control unit and a man-machine interaction unit, wherein the energy storage monitoring unit is used for detecting charging state parameters; the central control unit is connected with the energy storage monitoring unit, receives the charging state parameters and compares the charging state parameters with an early warning value; when the charging state parameters exceed the deviation range of the early warning value, a charging ending instruction and an instruction for confirming that the charging gun is pulled out are sent out; the traction control unit is connected with the central control unit, and the traction control unit disconnects the charging contactor according to the charging ending instruction; the man-machine interaction unit is connected with the central control unit, and the man-machine interaction unit receives and displays an instruction that the charging gun is taken out; and after the man-machine interaction unit receives a preset touch operation to confirm that the charging gun is pulled out, the central control unit sends a traction locking and unlocking instruction to the traction control unit.

Description

Technical Field

[0001] The present disclosure relates to the field of rail transportation technology, and in particular to a battery charging control system and a control method. Background Art

[0002] As an important part of the future rail transit field, the charging safety and stability of the power batteries of new energy locomotives have become the focus of attention from all walks of life. The charging process of the power batteries of new energy locomotives is a complex and critical link, involving the monitoring and control of parameters. During the charging process, the power battery may cause failures due to overcharging, overheating, abnormal voltage, and even cause serious accidents such as fire. Therefore, it is of great significance to study and establish an effective charging control system to ensure the charging safety of new energy locomotives.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The present disclosure provides a battery charging control system and a control method, which can improve charging safety.

[0005] According to one aspect of the present disclosure, there is provided a battery charging control system, comprising:

[0006] Energy storage monitoring unit, used to detect charging status parameters during battery charging;

[0007] A central control unit is connected to the energy storage monitoring unit, and receives the charging state parameter and compares the charging state parameter with the warning value; when the charging state parameter exceeds the deviation range of the warning value, it is determined that a fault occurs, and a charging end instruction and an instruction to confirm that the charging gun has been unplugged are issued;

[0008] A traction control unit is connected to the central control unit, and the traction control unit disconnects the charging contactor according to the charging end instruction;

[0009] A human-machine interaction unit is connected to the central control unit, and the human-machine interaction unit receives and displays the instruction to confirm that the charging gun has been unplugged; and after the human-machine interaction unit receives a preset touch operation to confirm that the charging gun has been unplugged, the central control unit sends a traction lock unlock instruction to the traction control unit.

[0010] In an exemplary embodiment of the present disclosure, the charging status parameters include one or more of the battery box temperature, the voltage of the battery pack, the current of the battery pack, the temperature of the single cell, the current of the single cell, the voltage of the single cell, the connection status of the charging gun, the air conditioning status, and the remaining power of the battery pack; different types of charging status parameters are provided with corresponding warning values ​​one by one;

[0011] When the charging state parameter exceeds the deviation range of the warning value, determining that a fault occurs includes:

[0012] When any one of the charging state parameters exceeds the deviation range of the corresponding warning value, it is determined that a fault occurs.

[0013] In an exemplary embodiment of the present disclosure, the central control unit sends out fault information when determining that a fault occurs; the human-computer interaction unit includes a display module and a storage module, the display module is used to display the charging gun has been unplugged instruction and the fault information and can receive the preset touch operation; the storage module includes a database, and the database is used to store fault information in real time.

[0014] In an exemplary embodiment of the present disclosure, the control system further includes a buzzer, and when the central control unit issues the charging end instruction, it also triggers the buzzer for early warning.

[0015] In an exemplary embodiment of the present disclosure, when charging starts, the central control unit sends a charging start instruction to the traction control unit, and the traction control unit performs a whole vehicle traction blockade according to the charging start instruction to ensure that the locomotive has no power output.

[0016] According to one aspect of the present disclosure, there is provided a battery charging control method, comprising:

[0017] Detect charging status parameters during battery charging;

[0018] Compare the charging state parameter with the warning value; when the charging state parameter exceeds the deviation range of the warning value, determine that a fault has occurred, and issue a charging end instruction and a confirmation instruction that the charging gun has been unplugged;

[0019] disconnecting the charging contactor according to the charging end instruction;

[0020] After confirming that the charging gun has been unplugged, unlock the vehicle towing lock.

[0021] In an exemplary embodiment of the present disclosure, the charging status parameters include one or more of the battery box temperature, the voltage of the battery pack, the current of the battery pack, the temperature of the single cell, the current of the single cell, the voltage of the single cell, the connection status of the charging gun, the air conditioning status, and the remaining power of the battery pack; different types of charging status parameters are provided with corresponding warning values ​​one by one;

[0022] When the charging state parameter exceeds the deviation range of the warning value, determining that a fault occurs includes:

[0023] When any one of the charging state parameters exceeds the deviation range of the corresponding warning value, it is determined that a fault occurs.

[0024] In an exemplary embodiment of the present disclosure, the control method further includes:

[0025] When a fault is determined to have occurred, fault information is displayed and stored.

[0026] In an exemplary embodiment of the present disclosure, the control method further includes:

[0027] When the charging end instruction is issued, a buzzer is triggered for early warning.

[0028] In an exemplary embodiment of the present disclosure, the control method further includes:

[0029] At the beginning of charging, the traction of the entire vehicle is blocked to ensure that the locomotive has no power output.

[0030] The battery charging control system and control method disclosed in the present invention monitor the charging state parameters of the battery in real time through the energy storage monitoring unit, and can timely detect abnormal charging of the battery. The central control unit compares the monitored charging state parameters with the preset warning values. Once the deviation range is exceeded, it is determined to be a fault and a control instruction is issued immediately. This mechanism helps to prevent potential dangers such as battery overcharging, overheating and voltage abnormality, ensure the safety and stability of the charging process, and also help to extend the service life of the battery and reduce the cost of use and maintenance. After receiving the control instruction of the central control unit, the traction control unit can quickly disconnect the charging contactor to stop the charging process. This fast response mechanism helps to reduce the damage of the fault to the battery and the charging equipment. After disconnecting the charging contactor, the traction control unit will also issue an instruction that the charging gun has been unplugged to ensure accurate identification of the charging state within the system. At the same time, the human-computer interaction unit receives and displays the instruction that the charging gun has been unplugged, providing intuitive charging status information for the driver or operator. After the human-computer interaction unit receives the preset touch operation, the central control unit will send a traction lock unlock instruction to the traction control unit to restore the power output capacity of the locomotive. This design simplifies the operation process and improves the ease of use of the system. The present disclosure realizes comprehensive monitoring and control of the battery charging process through close cooperation of various functional units. This overall coordinated mechanism helps to improve charging efficiency and reduce the possibility of failure.

[0031] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0033] Figure 1 Schematic diagram of a battery charging control system in an embodiment of the present disclosure.

[0034] Figure 2 It is a schematic diagram of the composition of the battery charging control system in the embodiment of the present disclosure.

[0035] Figure 3 Flow chart of a battery charging control method in an embodiment of the present disclosure.

[0036] In the figure: 1. Energy storage monitoring unit; 11. Data detection device; 12. Data processing module; 2. Central control unit; 21. Data acquisition module; 22. Data analysis module; 23. Early warning analysis module; 24. Response execution module; 3. Traction control unit; 4. Human-computer interaction unit; 41. Display module; 42. Storage module; 5. Switch. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0038] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0039] The terms "a", "an", "the" and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to indicate an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0040] The present disclosure provides a battery charging control system, such as Figure 1 As shown, the battery charging control system may include an energy storage monitoring unit 1, a central control unit 2, a traction control unit 3 and a human-computer interaction unit 4, wherein:

[0041] The energy storage monitoring unit 1 is used to detect the charging state parameters of the battery during charging;

[0042] The central control unit 2 is connected to the energy storage monitoring unit 1, and the central control unit 2 receives the charging state parameter and compares the charging state parameter with the warning value; when the charging state parameter exceeds the deviation range of the warning value, it is determined that a fault has occurred, and a charging end instruction and an instruction to confirm that the charging gun has been unplugged are issued;

[0043] The traction control unit 3 is connected to the central control unit 2, and the traction control unit 3 disconnects the charging contactor according to the charging end instruction;

[0044] The human-machine interaction unit 4 is connected to the central control unit 2, and the human-machine interaction unit 4 receives and displays the instruction that the charging gun has been pulled out; and after the human-machine interaction unit 4 receives the preset touch operation to confirm that the charging gun has been pulled out, the central control unit 2 sends a traction lock unlock instruction to the traction control unit 3.

[0045] The battery charging control system disclosed in the present invention monitors the charging state parameters of the battery in real time through the energy storage monitoring unit 1, and can timely detect abnormal charging of the battery. The central control unit 2 compares the monitored charging state parameters with the preset warning value. Once the deviation range is exceeded, it is determined to be a fault and a control instruction is issued immediately. This mechanism helps to prevent potential dangers such as battery overcharging, overheating and voltage abnormality, ensure the safety and stability of the charging process, and also helps to extend the service life of the battery and reduce the use cost and maintenance cost. After receiving the control instruction of the central control unit 2, the traction control unit 3 can quickly disconnect the charging contactor to stop the charging process. This fast response mechanism helps to reduce the damage of the fault to the battery and the charging equipment. After disconnecting the charging contactor, the traction control unit 3 will also issue an instruction that the charging gun has been unplugged to ensure accurate identification of the charging state within the system. At the same time, the human-computer interaction unit 4 receives and displays the instruction that the charging gun has been unplugged, providing intuitive charging status information for the driver or operator. After the human-computer interaction unit 4 receives the preset touch operation, the central control unit 2 will send a traction lock unlock instruction to the traction control unit 3 to restore the power output capacity of the locomotive. This design simplifies the operation process and improves the usability of the system. The present disclosure realizes comprehensive monitoring and control of the battery charging process through the close cooperation of various functional units. This overall coordinated mechanism helps to improve charging efficiency and reduce the possibility of failure.

[0046] The following is a detailed description of the various parts and specific details of the battery charging control system disclosed in the present invention:

[0047] The battery charging state parameters may include one or more of the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the battery pack remaining capacity (SOC). During the battery charging process, the battery charging state parameters may change in real time within a predetermined value range. The energy storage monitoring unit 1 may be used to detect the various charging state parameters during the battery charging process in real time to prevent battery damage due to overcharging, overheating, etc., which helps to extend the battery life.

[0048] In an exemplary embodiment of the present disclosure, the charging status parameters may include battery box temperature, battery pack charging voltage, battery pack charging current, single cell temperature, single cell current, single cell voltage, charging gun connection status, air conditioning status, and battery pack remaining power. Figure 2 As shown, the energy storage monitoring unit 1 may include a data detection device 11, and the data detection device 11 may include a charging gun air tightness detector, an air conditioning detector, a battery power detector and multiple sensors. The overall temperature of the battery box can be monitored in real time by a temperature sensor installed inside the battery box; high-precision voltage and current sensors can be used to continuously monitor the voltage and current changes of the battery pack during the charging process; the voltage, current and temperature of each single cell in the battery pack can also be finely monitored to prevent problems such as overvoltage or overheating of individual single cells; at the same time, a charging gun air tightness detector can be used to detect the physical connection status of the charging gun and the locomotive or energy storage system to ensure the safe start and end of the charging process; the air conditioning detector can also be used to monitor the operating status of the air conditioning or cooling system to ensure that the battery is charged within the optimal temperature range, thereby improving the charging efficiency and battery life. In addition, the actual remaining power of the battery pack can also be detected by a battery power detector to avoid overcharging or undercharging.

[0049] In some embodiments of the present disclosure, please continue to refer to Figure 2 As shown, the energy storage monitoring unit 1 may also include a data processing module 12, which can convert specific parameters monitored by the charging gun air tightness tester, air conditioning tester, battery power tester or various sensors into digital signals to facilitate transmission of the parameters to the vehicle network bus.

[0050] The central control unit 2 (CCU), energy storage monitoring unit 1, traction control unit 3 (TCU) and human-computer interaction unit 4 in the present disclosure can all exchange information through the locomotive vehicle network bus (Ethernet) according to the locomotive vehicle network communication protocol (TRDP). That is, the central control unit 2 and the energy storage monitoring unit 1 can be connected through the vehicle network bus, the energy storage monitoring unit 1 can transmit the detected charging state parameters to the Ethernet according to the communication protocol, and the central control unit 2 can collect the charging state parameters transmitted by the energy storage monitoring unit 1 from the vehicle network bus through the Ethernet.

[0051] In the present disclosure, the central control unit 2 serves as the "brain" of the entire control system, and is responsible for receiving signals, processing data, and sending various instructions to achieve effective management of the energy storage system (such as a battery pack). For example, the central control unit 2 can receive charging state parameters and compare the charging state parameters with the warning values ​​pre-set in the central control unit 2; when the charging state parameters exceed the deviation range of the warning values, it is determined that a fault has occurred, and a charging end instruction and a confirmation instruction that the charging gun has been unplugged are issued.

[0052] In some embodiments of the present disclosure, when the charging status parameters include multiple different types of parameters, different types of charging status parameters are each provided with a corresponding warning value. When any one of the charging status parameters exceeds the deviation range of the corresponding warning value, it can be determined that a fault has occurred and fault information is issued. The fault information can be uploaded to the vehicle network bus according to the communication protocol.

[0053] For example, when the charging status parameters include the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the battery pack remaining power, the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the battery pack remaining power may each be provided with a corresponding warning value.

[0054] The temperature warning value of the battery box can be set according to the battery type and the manufacturer's recommendations. When the temperature of the battery box continues to rise and exceeds the temperature warning value, the central control unit 2 will determine that the battery box has an overheating fault, and issue a command to end charging and confirm that the charging gun has been unplugged. The upper and lower limits of the voltage (or current) during the charging process of the battery pack can be set as warning values ​​according to the rated voltage (or rated current) and charging characteristics of the battery pack. If the charging voltage (or current) exceeds the upper limit, it may mean overcharging, which will damage the battery; if it is lower than the lower limit of the voltage (or current), it may be insufficiently charged or there is a charging circuit fault. At this time, the central control unit 2 will determine that the battery pack has a voltage (or current) fault, and issue a command to end charging and confirm that the charging gun has been unplugged. The fault judgment of the temperature, voltage, and current of the single cell is basically similar to the fault judgment of the temperature, voltage, and current of the battery pack, so it will not be repeated here. The warning value of the charging gun connection status can be the connection air tightness parameter between the charging gun and the energy storage system. When the connector tightness parameter is less than the preset warning value, it can be determined that the charging gun connection failure occurs, and an end charging instruction and a confirmation instruction for the charging gun to be unplugged are issued. The working state and temperature adjustment range of the air conditioning system can be set as warning values ​​according to the requirements of the battery thermal management system. Failure of the air conditioning system may cause the battery temperature to be too high or too low, affecting the charging efficiency and battery life. The central control unit 2 monitors the working state of the air conditioner. Once it is found that the air conditioning temperature exceeds the warning value under the set working state, it can be determined as an air conditioning failure, and an end charging instruction and a confirmation instruction for the charging gun to be unplugged are issued. The warning value of the remaining power (SOC) of the battery pack can be set according to the actual capacity and usage of the battery pack. When the remaining power of the battery pack exceeds the warning value, the remaining power of the battery pack can be determined to be a failure, and an end charging instruction and a confirmation instruction for the charging gun to be unplugged are issued.

[0055] In an exemplary embodiment of the present disclosure, please continue to refer to Figure 2 As shown, the central control unit 2 may include a data acquisition module 21, a data analysis module 22, a warning analysis module 23 and a response execution module 24, wherein the data acquisition module 21 may be connected to the locomotive vehicle network bus, and is mainly used to obtain various parameters and digital signals in the locomotive vehicle network bus. The data analysis module 22 is connected to the data acquisition module 21, and is mainly used to analyze the digital signals collected by the data acquisition module 21 to convert the digital signals into specific parameters. The warning analysis module 23 can compare each parameter with the corresponding warning value, and determine whether a fault occurs based on the comparison result. The response execution module 24 can be connected to the warning analysis module 23 and the vehicle network bus. When it is determined that a fault occurs, the response execution module 24 can issue a charging end instruction and a confirmation instruction that the charging gun has been unplugged, and can also upload the fault information to the vehicle network bus.

[0056] It should be noted that, since the charging status parameters include multiple different types of parameters, the fault information sent by the central control unit 2 may be different. For example, when the charging status parameters include the battery box temperature, the fault information may include fault information that the battery box temperature is too high; when the charging status parameters include the voltage (or current) of the battery pack, the fault information may include fault information that the battery pack is overvoltage (or overcurrent); when the charging status parameters include the temperature of the single cell, the fault information may include fault information that the temperature of the single cell is too high (or too low); when the charging status parameters include the voltage (or current) of the single cell, the fault information may include fault information that the single cell is overvoltage (or overcurrent); when the charging status parameters include the air conditioning status, the fault information may include air conditioning fault information; when the charging status parameters include the charging gun connection status, the fault information may include fault information that the charging gun is stuck (or stuck), etc.

[0057] The traction control unit 3 can be connected to the central control unit 2 through the locomotive on-board network bus, and the traction control unit 3 can receive various instructions and information from the central control unit 2 through the locomotive on-board network bus. For example, the traction control unit 3 can receive the charging end instruction issued by the central control unit 2 through the locomotive on-board network bus, and disconnect the charging contactor according to the charging end instruction. For example, after receiving the charging end instruction, the traction control unit 3 can determine whether the conditions for disconnecting the charging contactor are currently met according to the preset logic, such as confirming that the charging current has dropped to a safe level and there are no other charging-related faults. Once the conditions are confirmed to be met, the traction control unit 3 will send a disconnection signal to the charging contactor control module, thereby triggering the charging contactor actuator to operate, thereby safely disconnecting the charging circuit, ensuring that there is no power input to the power battery charging circuit, and preventing the power battery from overcharging and the expansion of faults. In this process, the traction control unit 3 may also monitor the actual disconnection state of the contactor at the same time to ensure that the instruction is correctly executed, and take remedial measures or report the fault when necessary.

[0058] The human-machine interaction unit 4 can be connected to the central control unit 2 via the vehicle network bus. Figure 2 As shown, the human-machine interaction unit 4 may include a display module 41 and a storage module 42. The display module 41 may include a display screen, which may be used to display various instructions and various instructions and information sent by the central control unit 2, the energy storage detection unit, and the traction control unit 3. For example, the human-machine interaction unit 4 may receive and display the instruction sent by the central control unit 2 to confirm that the charging gun has been unplugged; at the same time, the human-machine interaction unit 4 may also obtain fault information through the vehicle network bus and display the fault information through the display screen.

[0059] In some embodiments of the present disclosure, a virtual button for confirming the unplugging of the charging gun may be provided below the instruction for confirming that the charging gun has been unplugged displayed on the display module 41, and the driver or relevant staff may press the virtual button for confirming the unplugging of the charging gun on the display screen of the human-computer interaction unit 4 (i.e., the human-computer interaction unit 4 receives a preset touch operation to confirm that the charging gun has been unplugged), and after the human-computer interaction unit 4 receives the preset touch operation to confirm that the charging gun has been unplugged, the central control unit 2 may send a traction lock unlock instruction to the traction control unit 3.

[0060] In the present disclosure, the storage module 42 may include a database that can record and store all data related to the charging process (including fault information) in real time. This includes not only basic information such as timestamps and fault types, but may also include system status data before and after the fault, providing data support for fault analysis and prevention. By storing this information, historical problems can be traced back to optimize system maintenance strategies.

[0061] In an exemplary embodiment of the present disclosure, a virtual button for starting charging and a virtual button for ending charging may also be provided on the display screen. When charging starts, the driver or staff may press the virtual button for starting charging, at which time the central control unit 2 may send a charging start instruction to the traction control unit 3, and the traction control unit 3 may perform vehicle traction blocking according to the charging start instruction to ensure that the locomotive has no power output.

[0062] For example, before charging begins, the central control unit 2 can detect the overall status of the locomotive, including but not limited to the battery status (such as power, temperature, health), whether the locomotive is parked, whether the charging interface is connected correctly and safely, etc. When the above checks meet the requirements, it can be checked whether the central control unit 2 has established communication with the charging station or charging pile to confirm the charging parameters (such as charging voltage, current, expected charging time, etc.) and ensure smooth communication between the two parties.

[0063] When the above checks meet the requirements, the central control unit 2 may send a charging start instruction to the traction control unit 3. After receiving the charging start instruction sent by the central control unit 2, the traction control unit 3 immediately performs the vehicle traction blocking operation. The vehicle traction blocking operation includes shutting down the power output of the motor to ensure that the locomotive will not generate power output for any reason during the charging process, thereby avoiding the potential safety hazards caused by the movement of the vehicle during charging.

[0064] When a fault occurs during charging, normal charging ends, or the driver manually ends charging (for example, the driver presses the virtual charging end button on the display), the central control unit 2 will send a charging end instruction to the traction control unit 3. At this time, the traction control unit 3 will also disconnect the charging contactor according to the charging end instruction. At the same time, after the human-computer interaction unit 4 receives the preset touch operation to confirm that the charging gun has been unplugged, the central control unit 2 can send a traction lock unlock instruction to the traction control unit 3.

[0065] After charging is completed, a pop-up window will automatically appear on the display screen to remind the driver that the locomotive is in a non-charging state, which helps to improve the safety of locomotive operation, avoid driver misoperation, and increase user satisfaction and trust.

[0066] In an exemplary embodiment of the present disclosure, the battery charging control system of the present disclosure may further include a switch 5, which may be used as a part of the locomotive onboard network. The switch 5 may be connected to the energy storage monitoring unit 1, the central control unit 2, the traction control unit 3 and the human-machine interaction unit 4 respectively, and may communicate with the energy storage monitoring unit 1, the central control unit 2, the traction control unit 3 and the human-machine interaction unit 4 in two directions respectively. The signals sent by the energy storage monitoring unit 1, the central control unit 2, the traction control unit 3 and the human-machine interaction unit 4 may be transmitted to the switch 5. The switch 5 may ensure that these signals are transmitted smoothly in the network, avoiding communication interruption or delay caused by network congestion or failure. At the same time, the switch 5 may send data to the correct port according to the destination address of each signal, ensuring that the data reaches the target unit quickly and accurately.

[0067] In an exemplary embodiment of the present disclosure, the battery charging control system of the present disclosure may further include a buzzer, which may be provided on the central control unit 2, the traction control unit 3 or the human-computer interaction unit 4. When the central control unit 2 issues a charging end instruction, the buzzer may be triggered to give an early warning. The early warning duration may be 1 to 2 minutes, for example, the early warning duration may be 1 minute, 1.5 minutes or 2 minutes. Of course, the early warning duration may also be other durations, which are not listed here one by one.

[0068] The present disclosure also provides a battery charging control method, such as Figure 3 As shown, the control method may include steps S110 to S140, wherein:

[0069] Step S110, detecting charging state parameters during battery charging;

[0070] Step S120, comparing the charging state parameter with the warning value; when the charging state parameter exceeds the deviation range of the warning value, determining that a fault has occurred, and issuing a charging end instruction and a confirmation instruction that the charging gun has been unplugged;

[0071] Step S130, disconnecting the charging contactor according to the charging end instruction;

[0072] Step S140, after confirming that the charging gun has been unplugged, unlock the vehicle traction blockade.

[0073] The beneficial effects of the battery charging control method of the present disclosure have been described in detail in the embodiments of the corresponding battery charging control system, and therefore will not be repeated here.

[0074] The following is a detailed description of each step and specific details of the battery charging control method disclosed in the present invention:

[0075] like Figure 3 As shown, in step S110, the charging state parameters during the battery charging process are detected.

[0076] The battery charging state parameters may include one or more of the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the battery pack remaining capacity (SOC). During the battery charging process, the battery charging state parameters may change in real time within a predetermined value range. The energy storage monitoring unit 1 may be used to detect the various charging state parameters during the battery charging process in real time to prevent battery damage due to overcharging, overheating, etc., which helps to extend the battery life.

[0077] In an exemplary embodiment of the present disclosure, the charging state parameters may include the battery box temperature, the voltage of the battery pack, the current of the battery pack, the temperature of the single cell, the current of the single cell, the voltage of the single cell, the connection state of the charging gun, the air conditioning state, and the remaining power of the battery pack. The energy storage monitoring unit 1 may include a charging gun air tightness detector, an air conditioning detector, a battery power detector, and a plurality of sensors. The overall temperature of the battery box can be monitored in real time by a temperature sensor installed inside the battery box; the voltage and current changes of the battery pack during the charging process can be continuously monitored by using high-precision voltage and current sensors; the voltage, current and temperature of each single cell in the battery pack can also be finely monitored to prevent problems such as overvoltage or overheating of individual single cells; at the same time, the charging gun air tightness detector can be used to detect the physical connection state of the charging gun and the locomotive or energy storage system to ensure the safe start and end of the charging process; the air conditioning detector can also be used to monitor the operating state of the air conditioning or cooling system to ensure that the battery is charged within the optimal temperature range, thereby improving the charging efficiency and battery life. In addition, the actual remaining power of the battery pack can also be detected by the battery power detector to avoid overcharging or undercharging.

[0078] like Figure 3As shown, in step S120, the charging state parameter is compared with the warning value; when the charging state parameter exceeds the deviation range of the warning value, it is determined that a fault has occurred, and a charging end instruction and a confirmation instruction that the charging gun has been unplugged are issued.

[0079] The charging state parameters can be received by the central control unit 2, and the charging state parameters can be compared with the warning values ​​preset in the central control unit 2; when the charging state parameters exceed the deviation range of the warning values, it is determined that a fault has occurred, and a charging end instruction and a confirmation instruction that the charging gun has been unplugged are issued. When the charging state parameters include multiple different types of parameters, different types of charging state parameters are each provided with a corresponding warning value. When any one of the charging state parameters exceeds the deviation range of the corresponding warning value, it can be determined that a fault has occurred, and a fault message is issued, which can be uploaded to the vehicle network bus according to the communication protocol.

[0080] like Figure 3 As shown, in step S130, the charging contactor is disconnected according to the charging end instruction.

[0081] The traction control unit 3 can be connected to the central control unit 2 through the locomotive on-board network bus, and the traction control unit 3 can receive various instructions and information from the central control unit 2 through the locomotive on-board network bus. For example, the traction control unit 3 can receive the charging end instruction issued by the central control unit 2 through the locomotive on-board network bus, and disconnect the charging contactor according to the charging end instruction. For example, after receiving the charging end instruction, the traction control unit 3 can determine whether the conditions for disconnecting the charging contactor are currently met according to the preset logic, such as confirming that the charging current has dropped to a safe level and there are no other charging-related faults. Once the conditions are confirmed to be met, the traction control unit 3 will send a disconnection signal to the charging contactor control module, thereby triggering the charging contactor actuator to operate, thereby safely disconnecting the charging circuit, ensuring that there is no power input to the power battery charging circuit, and preventing the power battery from overcharging and the expansion of faults.

[0082] like Figure 3 As shown, in step S140, after confirming that the charging gun has been unplugged, the vehicle traction blockade is unlocked.

[0083] The human-machine interaction unit 4 can be connected to the central control unit 2 through the vehicle network bus. The human-machine interaction unit 4 may include a display module 41 and a storage module 42. The display module 41 may include a display screen, which can be used to display various instructions and various instructions and information sent by the central control unit 2, the energy storage detection unit, and the traction control unit 3. For example, the human-machine interaction unit 4 can receive and display the instruction sent by the central control unit 2 to confirm that the charging gun has been unplugged; at the same time, the human-machine interaction unit 4 can also obtain fault information through the vehicle network bus and display the fault information through the display screen.

[0084] In some embodiments of the present disclosure, a virtual button for confirming the unplugging of the charging gun may be provided below the instruction for confirming that the charging gun has been unplugged displayed on the display module 41, and the driver or relevant staff may press the virtual button for confirming the unplugging of the charging gun on the display screen of the human-computer interaction unit 4 (that is, the human-computer interaction unit 4 receives a preset touch operation to confirm that the charging gun has been unplugged), and after the human-computer interaction unit 4 receives the preset touch operation to confirm that the charging gun has been unplugged, the central control unit 2 may send a traction lock unlocking instruction to the traction control unit 3 to unlock the traction lock of the entire vehicle.

[0085] In an exemplary embodiment of the present disclosure, the battery charging control method of the present disclosure may further include:

[0086] Step S150, when it is determined that a fault occurs, display and store fault information.

[0087] Fault information can be stored by the storage module 42 in the human-computer interaction unit 4. For example, the storage module 42 may include a database, which can record and store all data related to the charging process (including fault information) in real time. This includes not only basic information such as timestamps and fault types, but may also include system status data before and after the fault, providing data support for fault analysis and prevention. By storing this information, historical problems can be traced back to optimize system maintenance strategies.

[0088] In an exemplary embodiment of the present disclosure, the battery charging control method of the present disclosure may further include:

[0089] Step S160, when the charging end instruction is issued, a buzzer is triggered for warning.

[0090] The buzzer can be provided on the central control unit 2, the traction control unit 3 or the human-machine interaction unit 4. When the central control unit 2 issues a charging end instruction, the buzzer can also be triggered for warning. The warning duration can be 1 to 2 minutes, for example, the warning duration can be 1 minute, 1.5 minutes or 2 minutes. Of course, the warning duration can also be other durations, which are not listed here one by one.

[0091] In an exemplary embodiment of the present disclosure, the battery charging control method of the present disclosure may further include:

[0092] Step S170, when charging starts, the vehicle traction is blocked to ensure that the locomotive has no power output.

[0093] The display screen may also be provided with a virtual button for starting charging and a virtual button for ending charging. When charging starts, the driver or staff may press the virtual button for starting charging, and at this time, the central control unit 2 may send a charging start instruction to the traction control unit 3, and the traction control unit 3 may perform vehicle traction blocking according to the charging start instruction to ensure that the locomotive has no power output.

[0094] After the traction is blocked, the central control unit 2 may send a charging start instruction to the traction control unit 3. After receiving the charging start instruction sent by the central control unit 2, the traction control unit 3 immediately performs the vehicle traction blocking operation. The vehicle traction blocking operation includes shutting down the power output of the motor to ensure that the locomotive will not generate power output for any reason during the charging process, thereby avoiding the potential safety hazards caused by the movement of the vehicle during charging. After the human-machine interaction unit 4 receives the preset touch operation to confirm that the charging gun has been unplugged, the central control unit 2 may send a traction blockade unlocking instruction to the traction control unit 3.

[0095] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A battery charging control system, characterized in that: include: Energy storage monitoring unit, used to detect charging status parameters during battery charging; A central control unit is connected to the energy storage monitoring unit, and receives the charging state parameter and compares the charging state parameter with the warning value; when the charging state parameter exceeds the deviation range of the warning value, it is determined that a fault occurs, and a charging end instruction and an instruction to confirm that the charging gun has been unplugged are issued; A traction control unit is connected to the central control unit, and the traction control unit disconnects the charging contactor according to the charging end instruction; A human-machine interaction unit is connected to the central control unit, and the human-machine interaction unit receives and displays the instruction to confirm that the charging gun has been unplugged; and after the human-machine interaction unit receives a preset touch operation to confirm that the charging gun has been unplugged, the central control unit sends a traction lock unlock instruction to the traction control unit.

2. The control system according to claim 1, characterized in that: The charging status parameters include one or more of the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the remaining battery power of the battery pack; different types of charging status parameters are provided with corresponding warning values ​​one by one; When the charging state parameter exceeds the deviation range of the warning value, determining that a fault occurs includes: When any one of the charging state parameters exceeds the deviation range of the corresponding warning value, it is determined that a fault occurs.

3. The control system according to claim 1, characterized in that: The central control unit sends out fault information when determining that a fault occurs; the human-computer interaction unit includes a display module and a storage module, the display module is used to display the charging gun has been unplugged instruction and the fault information and can receive the preset touch operation; the storage module includes a database, and the database is used to store fault information in real time.

4. The control system according to claim 1, characterized in that: The control system also includes a buzzer, and when the central control unit issues the charging end instruction, it also triggers the buzzer to issue an early warning.

5. The control system according to any one of claims 1 to 4, characterized in that: When charging starts, the central control unit sends a charging start instruction to the traction control unit, and the traction control unit performs vehicle traction blocking according to the charging start instruction to ensure that the locomotive has no power output.

6. A battery charging control method, characterized in that: include: Detect charging status parameters during battery charging; comparing the charging state parameter with a warning value; When the charging state parameter exceeds the deviation range of the warning value, it is determined that a fault occurs, and a charging end instruction and an instruction to confirm that the charging gun has been unplugged are issued; disconnecting the charging contactor according to the charging end instruction; After confirming that the charging gun has been unplugged, unlock the vehicle towing lock.

7. The control method according to claim 6, characterized in that: The charging status parameters include one or more of the battery box temperature, the battery pack charging voltage, the battery pack charging current, the single cell temperature, the single cell current, the single cell voltage, the charging gun connection status, the air conditioning status, and the remaining battery power of the battery pack; different types of charging status parameters are provided with corresponding warning values ​​one by one; When the charging state parameter exceeds the deviation range of the warning value, determining that a fault occurs includes: When any one of the charging state parameters exceeds the deviation range of the corresponding warning value, it is determined that a fault occurs.

8. The control method according to claim 6, characterized in that: The control method further comprises: When a fault is determined to have occurred, fault information is displayed and stored.

9. The control method according to claim 6, characterized in that: The control method further comprises: When the charging end instruction is issued, a buzzer is triggered for early warning.

10. The control method according to any one of claims 6 to 9, characterized in that: The control method further comprises: At the beginning of charging, the traction of the entire vehicle is blocked to ensure that the locomotive has no power output.

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