Charging management system based on rail locomotive and rail locomotive

Abstract

The embodiment of the utility model provides a charging management system based on a rail locomotive and the rail locomotive, and belongs to the technical field of power battery control. The rail locomotive comprises a carriage and at least one carriage, and the charging management system based on the rail locomotive comprises a power battery subsystem arranged in the corresponding carriage; the auxiliary battery subsystem is arranged in a carriage; each auxiliary battery cluster is connected to the first node after being connected to the confluence cabinet; the power battery clusters are connected to the second node after being connected to the electrical cabinet, and the first node is further electrically connected with the second node; and the main control module is electrically connected with each confluence cabinet circuit breaker, and is used for controlling a switching device of each circuit breaker according to the detected charging temperature value, and determining a target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem. Through the provided scheme, the battery subsystem is determined according to requirements, the reliability of the charging system is greatly improved, the actual electric quantity of the system is effectively improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present application relates to the field of power battery control technology, and in particular to a charging management system based on a rail locomotive and a rail locomotive. Background Art

[0002] Many rail vehicle companies remove the fuel engines in the power compartment and use this space to arrange the battery system. Due to the limited space, the battery system's power is generally not high and is not enough to ensure the vehicle's range.

[0003] To solve this problem, the current method is to add a battery trailer to the rear end of the vehicle to ensure the vehicle's endurance. However, due to the differences in the layout and power of the two battery systems, it is impossible to intelligently select the corresponding battery system, which creates certain safety hazards. Utility Model Content

[0004] In order to solve the above technical problems, the embodiments of the present application provide a charging management system based on a rail locomotive and a rail locomotive.

[0005] In a first aspect, an embodiment of the present application provides a rail locomotive comprising: a carriage and at least one carriage, wherein the rail locomotive-based charging management system comprises: an auxiliary battery subsystem, a main control module, and at least one power battery subsystem;

[0006] The power battery subsystem is arranged in the corresponding compartment; the auxiliary battery subsystem is arranged in the compartment;

[0007] The auxiliary battery subsystem includes: a combiner cabinet and multiple auxiliary battery clusters; each auxiliary battery cluster is connected to the combiner cabinet and then connected to the first node;

[0008] The power battery subsystem includes: an electrical cabinet and a plurality of power battery clusters; each power battery cluster is connected to a second node after being connected to the electrical cabinet; the first node is also electrically connected to the second node;

[0009] The combiner cabinet includes: a plurality of combiner cabinet circuit breakers;

[0010] The main control module is electrically connected to each of the combiner cabinet circuit breakers, and is used to control the switching device of each of the combiner cabinet circuit breakers according to the detected charging temperature value, and determine the target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem.

[0011] In one embodiment, the rail locomotive-based charging management system further includes: a charging unit; a pantograph is provided on the top of the rail locomotive;

[0012] The charging unit is electrically connected to the output end of the combiner cabinet;

[0013] The charging unit is electrically connected to the charging device via the pantograph, and is used to obtain a charging voltage to supply power to the target power supply subsystem.

[0014] In one embodiment, the auxiliary battery cluster includes: an auxiliary high-voltage box, an auxiliary thermal management unit, an auxiliary fire fighting host, and a plurality of auxiliary battery boxes;

[0015] The auxiliary battery boxes are connected in series from top to bottom, and the auxiliary thermal management unit is arranged on top of the auxiliary battery box to perform temperature management on the auxiliary battery box;

[0016] The auxiliary high-voltage box is arranged below the auxiliary battery box and is electrically connected to the auxiliary thermal management unit and the auxiliary battery box respectively. The auxiliary high-voltage box is used to control the input or output current value and obtain charging information of each auxiliary battery cluster;

[0017] The auxiliary fire-fighting host is arranged at the bottom of the auxiliary high-voltage box and is connected to each of the auxiliary battery boxes.

[0018] In one embodiment, the power battery cluster includes: a power high-voltage box, a power thermal management unit, a power fire fighting host, an adjustment unit, and a plurality of power battery boxes;

[0019] The power battery boxes are connected in series in order from top to bottom;

[0020] The power thermal management unit is arranged on the power battery box and is respectively communicated with each of the power battery boxes, the power high-voltage box and the adjustment unit. The power thermal management unit is used to manage the temperature of the power battery box and control the temperature of the power battery box to be within a preset temperature range;

[0021] The power high-voltage box is arranged below the power battery box and is connected to the power battery box respectively, and is used to control the input or output current value and obtain the charging information of the power battery cluster;

[0022] The adjustment unit is provided below the power high-voltage box and is electrically connected to the output terminal of the power high-voltage box, and is used to adjust the voltage value of the power battery cluster and control the output voltage value of each power battery cluster to remain within a preset voltage range;

[0023] The power fire fighting host is arranged at the bottom of the adjustment unit and is connected to each of the power battery boxes.

[0024] In one embodiment, the rail vehicle-based charging management system includes: an auxiliary three-level master control unit, at least one power three-level master control unit, an auxiliary heating subsystem, and a charging subsystem; the power battery box includes: a power voltage acquisition unit; the auxiliary battery box includes: an auxiliary voltage acquisition unit; the power high-voltage box includes: a power battery management subsystem; the auxiliary high-voltage box includes: an auxiliary battery management subsystem;

[0025] The power battery management subsystem is respectively connected to the power three-level master control unit and the power voltage acquisition unit, and is used to obtain the power acquisition information collected by the power voltage acquisition unit and send the power acquisition information to the power three-level master control unit;

[0026] The adjustment unit is communicatively connected to the power three-level master control unit and is further used to control the output current or input current of the power battery cluster according to the power collection information;

[0027] The auxiliary battery management subsystem is respectively connected to the auxiliary three-level master control unit and the auxiliary voltage acquisition unit for acquiring auxiliary acquisition information acquired by the auxiliary voltage acquisition unit and sending the auxiliary acquisition information to the auxiliary three-level master control unit.

[0028] In one embodiment, the main control module is communicatively connected to the auxiliary three-level master control unit and the power three-level master control unit, respectively, to obtain the auxiliary acquisition information and the power acquisition information;

[0029] The main control module is also respectively connected to the auxiliary heating subsystem and the charging subsystem for communication, and is also used to determine the target subsystem in the auxiliary heating subsystem and the charging subsystem based on the detected charging temperature value, the auxiliary collection information and the power collection information.

[0030] In one embodiment, the main control module is also communicatively connected to the auxiliary battery subsystem and the power battery subsystem, respectively, and is configured to determine the target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem if the charging temperature value meets the charging conditions, or to control the auxiliary battery subsystem and each power battery subsystem to enter a corresponding low-temperature heating mode if the charging temperature value does not meet the charging conditions.

[0031] In one embodiment, the auxiliary high-voltage box includes: at least one auxiliary high-voltage box relay;

[0032] The auxiliary battery subsystem is communicatively connected to each of the auxiliary high-voltage box relays, and is configured to, if the auxiliary battery subsystem is determined to be the target power supply subsystem, sequentially close each of the auxiliary high-voltage box relays according to the voltage values ​​of the auxiliary battery clusters from small to large via the auxiliary three-level master control unit, thereby controlling the auxiliary three-level master control unit to establish a communication connection with the charging subsystem;

[0033] The main control module is communicatively connected to the pantograph, and is used to control the pantograph to be raised, and to control the auxiliary battery subsystem to enter the first charging mode.

[0034] In one embodiment, the power high-voltage box includes: at least one power high-voltage box relay;

[0035] The power battery subsystem is communicatively connected to each of the power high-voltage box relays, and is configured to, if the power battery subsystem is determined to be the target power supply subsystem, sequentially close each of the power high-voltage box relays according to the voltage values ​​of the power battery clusters from small to large via the power three-level master control unit, thereby controlling the power three-level master control unit to establish a communication connection with the charging subsystem;

[0036] The main control module is connected to the pantograph for controlling the pantograph to raise and lower the pantograph, and determining whether the combiner cabinet circuit breaker is in an open state. If so, the main control module controls the power battery subsystem to enter the second charging mode.

[0037] In a second aspect, an embodiment of the present application provides a rail locomotive, comprising the rail locomotive-based charging management system of the first aspect.

[0038] The above-mentioned charging management system based on rail locomotive and rail locomotive provided by the present application, the rail locomotive includes: a car and at least one carriage, the charging management system based on rail locomotive includes: an auxiliary battery subsystem, a main control module and at least one power battery subsystem; the power battery subsystem is arranged in the corresponding carriage; the auxiliary battery subsystem is arranged in the car; the auxiliary battery subsystem includes: a junction box and multiple auxiliary battery clusters; each of the auxiliary battery clusters is connected to the first node after being connected to the junction box; the power battery subsystem includes: an electrical cabinet and multiple power battery clusters; each of the power battery clusters is connected to the second node after being connected to the electrical cabinet; the first node is also electrically connected to the second node; the junction box includes: multiple junction box circuit breakers; the main control module is electrically connected to each of the junction box circuit breakers, and is used to control the switching device of each of the junction box circuit breakers according to the detected charging temperature value, and determine the target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem. By determining the battery system according to demand and setting different battery charging management strategies for different battery systems, the corresponding battery system can be heated and controlled according to the battery temperature, thereby improving charging efficiency, increasing the reliability of the charging system, and avoiding possible safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of this application and should not be regarded as limiting the scope of protection of this application. In each of the drawings, similar components are numbered similarly.

[0040] Figure 1 A schematic diagram of a module of a rail vehicle-based charging management system provided in an embodiment of the present application is shown;

[0041] Figure 2 A schematic diagram of a module of an auxiliary battery cluster provided by an embodiment of the present application is shown;

[0042] Figure 3 A schematic diagram of a module of a power battery cluster provided by an embodiment of the present application is shown;

[0043] Figure 4 Another module schematic diagram of a rail vehicle-based charging management system provided in an embodiment of the present application is shown;

[0044] Figure 5 A schematic structural diagram of a combiner cabinet circuit breaker provided in an embodiment of the present application is shown.

[0045] Icons: 10-carriage; 20-carriage; 11-auxiliary battery subsystem; 21-power battery subsystem; 111-auxiliary battery cluster; 211-power battery cluster; 112-merge cabinet; 212-electrical cabinet; 30-main control module; 1111-auxiliary thermal management unit; 1112-auxiliary battery box; 1113-auxiliary high-voltage box; 1114-auxiliary fire-fighting main unit; 2111-power thermal management unit; 2112-power battery box; 2113-power high-voltage box; 2114-adjustment unit; 2115-power fire-fighting main unit; 40-charging subsystem; 50-auxiliary heating subsystem; 60-auxiliary three-level master control unit; 70-power three-level master control unit; 11121-auxiliary voltage acquisition unit; 11131-auxiliary battery management subsystem; 21121-power voltage acquisition unit; 21131-power battery management subsystem. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0047] The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but rather merely represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0048] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present application, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0049] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0050] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which the various embodiments of the present application belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meaning as in the context of the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in the various embodiments of the present application.

[0051] With the rapid development of the new energy industry, the rail locomotive industry has also begun to undergo electrification reforms, switching from traditional fuel systems to lithium battery power systems. Since these rail vehicles are primarily used for transportation operations, they have certain requirements for load capacity and endurance. To ensure that these vehicles can still meet these requirements after the power system replacement, technicians will try to utilize all available space to arrange batteries during vehicle modification to ensure the required range. At the same time, to ensure normal production operations, locomotives need to be equipped with a charging system to ensure that the vehicles are fully charged before operation.

[0052] However, many rail vehicle companies are still modifying existing fuel vehicles. The main method is to remove the fuel engine in the power compartment and use this space to arrange the battery system. Due to the limited space, the battery system's power is generally not high, which is not enough to ensure the vehicle's range. Therefore, many modified vehicles can only be towed short distances within the station. To solve this problem, many companies have added battery trailers to the rear end of the vehicle to ensure the vehicle's range. Because the two battery systems have different layout locations and power levels, especially during the charging process, it is impossible to intelligently select the corresponding charging system and use the same charging control logic for different systems, which brings a series of safety risks. Therefore, this application proposes a charging management system based on rail locomotives.

[0053] Example 1

[0054] An embodiment of the present application provides a charging management system based on a rail vehicle.

[0055] See also Figure 1The rail locomotive includes: a carriage 10 and at least one carriage 20, and the charging management system based on the rail locomotive includes: an auxiliary battery subsystem 11, a main control module 30 and at least one power battery subsystem 21; the power battery subsystem 21 is arranged in the corresponding carriage 20; the auxiliary battery subsystem 11 is arranged in the carriage 10; the auxiliary battery subsystem 11 includes: a combiner cabinet 112 and multiple auxiliary battery clusters 111; each of the auxiliary battery clusters 111 is connected to the combiner cabinet 112 and then connected to the first node; the power battery Subsystem 21 includes: an electrical cabinet 212 and multiple power battery clusters 211; each power battery cluster 211 is connected to the second node after being connected to the electrical cabinet 212; the first node is also electrically connected to the second node; the junction cabinet 112 includes: multiple junction cabinet 112 circuit breakers; the main control module 30 is electrically connected to each of the junction cabinets 112 circuit breakers, and is used to control the switching device of each of the junction cabinets 112 circuit breakers according to the detected charging temperature value, and determine the target power supply subsystem in the auxiliary battery subsystem 11 and the power battery subsystem 21.

[0056] In this embodiment, if Figure 1 As shown, the charging management system based on the rail locomotive includes at least one power battery subsystem 21 and an auxiliary battery subsystem 11. The auxiliary battery subsystem 11 is arranged in the carriage 10, and each power battery subsystem 21 is arranged in the corresponding trailer. The two battery systems are connected together through power cables to supply power to the load system.

[0057] Among them, the power battery system is mainly used to provide power output. For example, during long-range driving, the power of the entire vehicle comes only from this system, and the auxiliary power system is only used to power auxiliary equipment. The two battery systems are powered independently and do not interfere with each other. When the locomotive is in short-distance, low-load traction, only the auxiliary battery system can be selected. At this time, the entire vehicle has only one power supply, and the auxiliary battery system supplies power to the drive load and the auxiliary load at the same time.

[0058] In one embodiment, the rail locomotive-based charging management system further includes: a charging unit; a pantograph is provided on the top of the rail locomotive; the charging unit is electrically connected to the output end of the combiner cabinet 112; the charging unit is electrically connected to the charging device through the pantograph, for obtaining a charging voltage and supplying power to the target power supply subsystem.

[0059] It should be noted that the output of the combiner cabinet 112 is electrically connected to a charging unit. This charging unit is connected to the rails of an external charging rack via a pantograph on the top of the rail vehicle, thereby connecting the charging circuit to the charging equipment on the ground. The voltage on the charging equipment is converted from external high-voltage AC power via a transformer. In charging mode, the pantograph serves as the key switch connecting the high-voltage circuit. Only when the high-voltage circuit in the charging circuit is connected and the low-voltage signal communication is normal can the pantograph enter charging mode and begin to draw power from the charging equipment and transmit it to the target power supply subsystem.

[0060] In one embodiment, the auxiliary battery cluster 111 includes: an auxiliary high-voltage box 1113, an auxiliary thermal management unit 1111, an auxiliary fire-fighting main unit 1114 and multiple auxiliary battery boxes 1112; each of the auxiliary battery boxes 1112 is connected in series in order from top to bottom, and the auxiliary thermal management unit 1111 is arranged on the top of the auxiliary battery box 1112 for performing temperature management on the auxiliary battery box 1112; the auxiliary high-voltage box 1113 is arranged below the auxiliary battery box 1112 and is electrically connected to the auxiliary thermal management unit 1111 and the auxiliary battery box 1112 respectively, and the auxiliary high-voltage box 1113 is used to control the input or output current value and obtain the charging information of each of the auxiliary battery clusters 111; the auxiliary fire-fighting main unit 1114 is arranged at the bottom of the auxiliary high-voltage box 1113 and is connected to each of the auxiliary battery boxes 1112.

[0061] In this embodiment, the auxiliary battery subsystem 11 and the power battery subsystem 21 are both composed of several battery clusters connected in parallel, and a single cluster is composed of several battery boxes connected in series. Figure 2 As shown, it includes an auxiliary high-voltage box 1113, an auxiliary thermal management unit 1111, an auxiliary fire-fighting host 1114 and multiple auxiliary battery boxes 1112. The auxiliary thermal management unit 1111 is arranged at the top. Its main function is to provide thermal management function for the auxiliary battery box 1112 in a single cluster to ensure that the battery cells in the auxiliary battery box 1112 operate within a reasonable temperature range.

[0062] The auxiliary high-voltage box 1113 is located on the second-to-last layer at the bottom. Various relays, fuses, resistors and an auxiliary battery management subsystem 11131 are arranged inside it. Its main function is to control the current output or input of a single auxiliary battery cluster 111. In addition, it also monitors the voltage and temperature of each battery cell in the auxiliary battery cluster 111, as well as the charging and discharging current of the auxiliary battery cluster 111.

[0063] Auxiliary firefighting main unit 1114 is located on the bottom floor and contains a fire extinguishing medium and a pump. When a fire occurs in auxiliary battery box 1112, auxiliary firefighting main unit 1114 pumps the fire extinguishing medium into auxiliary battery box 1112, where it controls the fire and extinguishes the fire. Auxiliary battery box 1112 also contains flame, smoke, and temperature detectors. These detectors collect fire signals and feed them back to auxiliary firefighting main unit 1114, which then drives its internal pump to carry the fire and simultaneously opens the solenoid valve in the firefighting line.

[0064] By setting up an auxiliary thermal management unit 1111 in the auxiliary battery cluster 111, the temperature of the auxiliary battery box 1112 is directly managed to ensure that the battery operates within the optimal temperature range, thereby improving the energy efficiency and cycle life of the battery. By setting up an auxiliary fire-fighting host 1114, the occurrence of safety accidents such as fire can be effectively prevented. The auxiliary battery management subsystem 11131 can accurately control the input or output current value to ensure that the battery cluster maintains a stable current output during the charging and discharging process, avoiding damage to the battery due to overcharging or over-discharging.

[0065] In one embodiment, the power battery cluster 211 includes: a power high-voltage box 2113, a power thermal management unit 2111, a power fire host 2115, an adjustment unit 2114 and a plurality of power battery boxes 2112; each of the power battery boxes 2112 is connected in series in order from top to bottom; the power thermal management unit 2111 is arranged on the top of the power battery box 2112, and is respectively communicated with each of the power battery boxes 2112, the power high-voltage box 2113 and the adjustment unit 2114, and the power thermal management unit 2111 is used to perform temperature management on the power battery box 2112, and control the temperature of the power battery box 2112 to be within a preset temperature. range; the power high-voltage box 2113 is arranged below the power battery box 2112 and is respectively connected to the power battery box 2112, for controlling the input or output current value and obtaining the charging information of each power battery cluster 211; the adjustment unit 2114 is arranged below the power high-voltage box 2113 and is electrically connected to the output end of the power high-voltage box 2113, for adjusting the voltage value of the power battery cluster 211, and controlling the output voltage value of each power battery cluster 211 to remain within a preset voltage range; the power fire-fighting host 2115 is arranged at the bottom of the adjustment unit 2114 and is connected to each power battery box 2112.

[0066] In this embodiment, the internal structure of the power battery cluster 211 is as follows: Figure 3As shown, there are a large number of power battery clusters 211 within the trailer. To prevent the entire battery system from malfunctioning due to problems with a single cluster, an adjustment unit 2114, a DC / DC voltage conversion module, has been added to the output of each cluster's power high-voltage box 2113. This DC / DC voltage conversion adjusts the voltage between the power battery clusters 211, ensuring that the output voltage of each cluster remains consistent. This reduces the voltage difference between clusters and reduces the circulating current between clusters. Furthermore, the charge and discharge current of a single cluster is controlled based on its charge level, achieving cluster-specific management and relaxing the tolerance for differences between clusters within the system, significantly improving the overall system efficiency.

[0067] The current output by the DC / DC voltage conversion module is converged into the electrical cabinet 212. The internal layout of the electrical cabinet 212 is similar to that of the junction cabinet 112. The voltage output from the electrical cabinet 212 is merged into the junction cabinet 112. By controlling the isolation switch in the junction cabinet 112, the power battery subsystem 21 or the auxiliary battery subsystem 11 is selected to connect to the power supply circuit.

[0068] In one embodiment, the charging management system based on the rail locomotive includes: an auxiliary three-level master control unit 60, at least one power three-level master control unit 70, an auxiliary heating subsystem 50 and a charging subsystem 40; the power battery box 2112 includes: a power voltage acquisition unit 21121; the auxiliary battery box 1112 includes: an auxiliary voltage acquisition unit 11121; the power high-voltage box 2113 includes: a power battery management subsystem 21131; the auxiliary high-voltage box 1113 includes: an auxiliary battery management subsystem 11131; the power battery management subsystem 21131 is respectively connected to the power three-level master control unit 70 and the power voltage acquisition unit 21121 The communication connection is used to obtain the power collection information collected by the power voltage collection unit 21121 and send the power collection information to the power three-level master control unit 70; the adjustment unit 2114 is communicated with the power three-level master control unit 70 and is also used to control the output current or input current of the power battery cluster 211 according to the power collection information; the auxiliary battery management subsystem 11131 is respectively communicated with the auxiliary three-level master control unit 60 and the auxiliary voltage collection unit 11121, and is used to obtain the auxiliary collection information collected by the auxiliary voltage collection unit 11121 and send the auxiliary collection information to the auxiliary three-level master control unit 60.

[0069] It should be noted that the multiple battery clusters in the auxiliary battery subsystem 11 are connected in series and then merged into the combiner cabinet 112 in the carriage 10 , and the combiner cabinet 112 is provided with multiple combiner cabinet 112 circuit breakers.

[0070] Specifically, such as Figure 4As shown, the auxiliary battery subsystem 11 is controlled by the auxiliary three-level master control unit 60, and the power battery subsystem 21 is controlled by the power three-level master control unit 70. At the same time, a voltage acquisition unit is arranged in the battery box. The voltage and temperature of the battery cell are monitored by the voltage acquisition unit, and the collected signal is fed back to the battery management subsystem of the cluster. The battery management subsystem then reports the battery information in the cluster to the three-level master control unit.

[0071] The DC / DC voltage conversion module within a single cluster of the power battery subsystem 21 communicates with the three-level power master control unit 70, collects power collection information of each power battery cluster 211 through the three-level power master control unit 70, and sends the power collection information of each cluster to the DC / DC voltage conversion module, which controls the charging and discharging current of the corresponding power battery cluster 211 through the DC / DC voltage conversion module.

[0072] In one embodiment, the main control module 30 is respectively connected to the auxiliary three-level master control unit 60 and the power three-level master control unit 70 for obtaining the auxiliary acquisition information and the power acquisition information; the main control module 30 is also respectively connected to the auxiliary heating subsystem 50 and the charging subsystem 40 for determining the target subsystem in the auxiliary heating subsystem 50 and the charging subsystem 40 based on the detected charging temperature value, the auxiliary acquisition information and the power acquisition information.

[0073] It should be noted that, currently, under low-temperature conditions, the charging of a rail vehicle's battery system is restricted, requiring the batteries to be heated in advance. Existing technology achieves this by activating a battery thermal management system, with the thermal management unit's power supply derived from battery discharge. However, under extremely low-temperature conditions, the battery system cannot self-discharge and requires an external auxiliary power supply. This application proposes, in addition to using the normal charging subsystem 40, adding an auxiliary heating subsystem 50 for extreme low-temperature heating.

[0074] In this embodiment, the auxiliary heating subsystem 50 and the charging subsystem 40 of the rail vehicle are both controlled by the main control module 30. The main control module 30 proposed in this application can be a PLC system (Programmable Logic Controller) or any electronic system with control functions.

[0075] The selected target subsystem is determined by obtaining the charging temperature value, the auxiliary acquisition information, and the power acquisition information, wherein the auxiliary acquisition information includes key parameters such as the status, temperature, voltage, current, and other key parameters of the auxiliary battery cluster 111, as well as other data related to the performance of the auxiliary battery system; the power acquisition information includes key parameters such as the status, temperature, voltage, current, and other key parameters of the power battery cluster 211, as well as other data related to the performance of the power battery system.

[0076] For example, if the charging temperature is lower than a set threshold, the auxiliary heating subsystem 50 is used as the target subsystem until the battery temperature of the power battery cluster 211 or the auxiliary battery cluster 111 reaches a set threshold, and then the auxiliary heating subsystem 50 is switched to the charging subsystem 40 .

[0077] In one embodiment, the main control module 30 is also communicatively connected to the auxiliary battery subsystem 11 and the power battery subsystem 21, respectively, and is configured to determine the target power supply subsystem in the auxiliary battery subsystem 11 and the power battery subsystem 21 if the charging temperature value meets the charging conditions, or to control the auxiliary battery subsystem 11 and each of the power battery subsystems 21 to enter a corresponding low-temperature heating mode if the charging temperature value does not meet the charging conditions.

[0078] In this embodiment, the charging management system begins a self-test after receiving the wake-up signal. If the charging management system is fault-free, it determines the status of all circuit breakers. If all circuit breakers are in the open state, it receives a charging message from the main control module 30. The charging management system then determines whether the current charging temperature is greater than a preset temperature threshold. If the charging temperature is less than the preset temperature threshold, charging requirements are not met, and the charging management system enters a low-temperature heating mode, using the auxiliary heating subsystem 50. If the charging temperature is greater than the preset temperature threshold, charging requirements are met. The charging management system determines the charging target based on the charging message, specifically, the target power supply subsystem within the auxiliary battery subsystem 11 and the power battery subsystem 21.

[0079] The charging message contains the corresponding charging object address code. If this address appears, it is assumed that the corresponding device needs to be charged; the charging protocol in CAN communication, its content constrains the various communication instructions between charging devices during the charging process.

[0080] In one embodiment, the auxiliary high-voltage box 1113 includes an auxiliary high-voltage box 1113 relay; the auxiliary battery subsystem 11 is used to close each of the auxiliary high-voltage box 1113 relays in sequence from small to large according to the voltage value of each of the auxiliary battery clusters 111 through the auxiliary three-level main control unit 60 if it is determined to be the target power supply subsystem, and control the auxiliary three-level main control unit 60 to establish a communication connection with the charging subsystem 40; the main control module 30 is used to control the pantograph to raise, and control the auxiliary battery subsystem 11 to enter the first charging mode.

[0081] It should be noted that if Figure 5 As shown, the auxiliary three-level master control unit 60 will close the charging relay of the high-voltage box in sequence from low to high according to the voltage value of the battery cluster. After completing this action, the auxiliary three-level master control unit 60 will then close QS1 and QS7 in the combiner cabinet 112. After completion, the charging subsystem 40 will be started. After the auxiliary three-level master control unit 60 establishes communication with the charging subsystem 40, the PLC will control the pantograph to raise the pantograph, and the charging management system will start to enter the charging mode. During the charging process, the highest single cell voltage in the cluster is still used as the judgment until the trigger condition is met. The charging management system will stop charging, disconnect the circuit breakers QS1 and QS7 of the combiner cabinet 112, and then disconnect the charging relay in the high-voltage box. Finally, the user is prompted to remove the key to power off.

[0082] For example, during the charging process, if the highest cell voltage in the cluster reaches 3.5V for 3 seconds and the judgment is valid, the charging stop condition is triggered.

[0083] In one embodiment, the power high-voltage box 2113 includes a power high-voltage box 2113 relay; the power battery subsystem 21 is used to close each power high-voltage box 2113 relay in sequence from small to large according to the voltage value of each power battery cluster 211 through the power three-level main control unit 70 if it is determined to be the target power supply subsystem, and control the power three-level main control unit 70 to establish a communication connection with the charging subsystem 40; the main control module 30 is used to control the pantograph to raise the bow and determine whether the circuit breaker of the junction cabinet 112 is in an open circuit state. If so, control the power battery subsystem 21 to enter the second charging mode.

[0084] It should be noted that the power level 3 master control unit 70 and the power level 3 master control unit 70 first close the charging relay of the high-voltage box in order from low to high according to the battery cluster voltage. After completing this action, the DC / DCDC / DC circuits in their respective systems receive the message instructions from the power level 3 master control unit 70 and the power level 3 master control unit 70 and detect the presence of high voltage at the input end, entering the startup state. The power level 3 master control unit 70 and the power level 3 master control unit 70 then respectively close QS3 and QS5 in the electrical cabinet 212. At this time, the power battery system voltage has been input to the combiner cabinet 112. To prevent the power battery system and the auxiliary battery system from being connected simultaneously, it is necessary to re-check the closure status of the circuit breakers in the combiner cabinet 112. If the circuit breakers in the combiner cabinet 112 are all in the open state, QS2 and QS4 in the combiner cabinet 112 are closed respectively. After a 20-second interval, the power level 3 master control unit 70 then closes QS7 in the combiner cabinet 112. After this action is completed, the system sends a circuit breaker closed message to the entire vehicle. The PLC then starts the charging subsystem 40, which enters charging mode. Since the battery system adopts a string design, full charging of a single battery cluster will not affect the continued charging of other battery clusters until all battery clusters are fully charged. After charging is completed, the external charging subsystem 40 is first disconnected, and then all internal power loads are stopped. The circuit breakers and relays are disconnected in sequence from the outside to the inside, and finally the user is prompted to remove the key to power off.

[0085] The present embodiment provides a charging management system for a rail vehicle, the rail vehicle comprising: a carriage 10 and at least one carriage 20, the charging management system for the rail vehicle comprising: an auxiliary battery subsystem 11, a main control module 30 and at least one power battery subsystem 21; the power battery subsystem 21 is arranged in the corresponding carriage 20; the auxiliary battery subsystem 11 is arranged in the carriage 10; the auxiliary battery subsystem 11 comprises: a combiner cabinet 112 and a plurality of auxiliary battery clusters 111; each of the auxiliary battery clusters 111 is connected to the combiner cabinet 112 and then to the first auxiliary battery cluster 111; A node; the power battery subsystem 21 includes: an electrical cabinet 212 and multiple power battery clusters 211; each power battery cluster 211 is connected to the electrical cabinet 212 and then connected to a second node; the first node is also electrically connected to the second node; the combiner cabinet 112 includes: multiple combiner cabinet 112 circuit breakers; the main control module 30 is electrically connected to each combiner cabinet 112 circuit breaker and is used to control the switching device of each combiner cabinet 112 circuit breaker based on the detected charging temperature value and determine the target power supply subsystem in the auxiliary battery subsystem 11 and the power battery subsystem 21. By setting different battery charging management strategies for different battery systems and controlling the heating of the corresponding battery system based on the battery temperature, charging efficiency is improved, the reliability of the charging system is increased, and potential safety hazards are avoided.

[0086] Example 2

[0087] In addition, an embodiment of the present application provides a rail locomotive, including the rail locomotive-based charging management system provided in Example 1.

[0088] The rail locomotive provided in this embodiment includes the rail locomotive-based charging management system mentioned in Example 1. By setting different battery charging management strategies for different battery systems and controlling the heating of the corresponding battery systems according to the battery temperature, the charging efficiency is improved, the reliability of the charging system is increased, and potential safety hazards are avoided.

[0089] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or terminal comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or terminal comprising the element.

[0090] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for controlling a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

[0091] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A charging management system based on a rail vehicle, characterized in that: The rail locomotive comprises: a carriage and at least one carriage, and the charging management system based on the rail locomotive comprises: an auxiliary battery subsystem, a main control module and at least one power battery subsystem; The power battery subsystem is arranged in the corresponding compartment; the auxiliary battery subsystem is arranged in the compartment; The auxiliary battery subsystem includes: a combiner cabinet and multiple auxiliary battery clusters; each auxiliary battery cluster is connected to the combiner cabinet and then connected to the first node; The power battery subsystem includes: an electrical cabinet and a plurality of power battery clusters; each power battery cluster is connected to a second node after being connected to the electrical cabinet; the first node is also electrically connected to the second node; The combiner cabinet includes: a plurality of combiner cabinet circuit breakers; The main control module is electrically connected to each of the combiner cabinet circuit breakers, and is used to control the switching device of each of the combiner cabinet circuit breakers according to the detected charging temperature value, and determine the target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem.

2. The rail vehicle-based charging management system according to claim 1, characterized in that: The rail locomotive-based charging management system further comprises: a charging unit; a pantograph is provided on the top of the rail locomotive; The charging unit is electrically connected to the output end of the combiner cabinet; The charging unit is electrically connected to the charging device via the pantograph, and is used to obtain a charging voltage to supply power to the target power supply subsystem.

3. The rail vehicle-based charging management system according to claim 2, characterized in that: The auxiliary battery cluster includes: an auxiliary high-voltage box, an auxiliary thermal management unit, an auxiliary fire fighting host and multiple auxiliary battery boxes; The auxiliary battery boxes are connected in series from top to bottom, and the auxiliary thermal management unit is arranged on top of the auxiliary battery box to perform temperature management on the auxiliary battery box; The auxiliary high-voltage box is arranged below the auxiliary battery box and is electrically connected to the auxiliary thermal management unit and the auxiliary battery box respectively. The auxiliary high-voltage box is used to control the input or output current value and obtain charging information of each auxiliary battery cluster; The auxiliary fire-fighting host is arranged at the bottom of the auxiliary high-voltage box and is connected to each of the auxiliary battery boxes.

4. The rail vehicle-based charging management system according to claim 3, characterized in that: The power battery cluster includes: a power high-voltage box, a power thermal management unit, a power fire fighting host, an adjustment unit and multiple power battery boxes; The power battery boxes are connected in series in order from top to bottom; The power thermal management unit is arranged on the power battery box and is respectively communicated with each of the power battery boxes, the power high-voltage box and the adjustment unit. The power thermal management unit is used to manage the temperature of the power battery box and control the temperature of the power battery box to be within a preset temperature range; The power high-voltage box is arranged below the power battery box and is connected to the power battery box respectively, and is used to control the input or output current value and obtain the charging information of the power battery cluster; The adjustment unit is provided below the power high-voltage box and is electrically connected to the output terminal of the power high-voltage box, and is used to adjust the voltage value of the power battery cluster and control the output voltage value of each power battery cluster to remain within a preset voltage range; The power fire fighting host is arranged at the bottom of the adjustment unit and is connected to each of the power battery boxes.

5. The rail vehicle-based charging management system according to claim 4, characterized in that: The rail locomotive-based charging management system includes: an auxiliary three-level master control unit, at least one power three-level master control unit, an auxiliary heating subsystem and a charging subsystem; the power battery box includes: a power voltage acquisition unit; the auxiliary battery box includes: an auxiliary voltage acquisition unit; the power high-voltage box includes: a power battery management subsystem; the auxiliary high-voltage box includes: an auxiliary battery management subsystem; The power battery management subsystem is respectively connected to the power three-level master control unit and the power voltage acquisition unit, and is used to obtain the power acquisition information collected by the power voltage acquisition unit and send the power acquisition information to the power three-level master control unit; The adjustment unit is communicatively connected to the power three-level master control unit and is further used to control the output current or input current of the power battery cluster according to the power collection information; The auxiliary battery management subsystem is respectively connected to the auxiliary three-level master control unit and the auxiliary voltage acquisition unit for acquiring auxiliary acquisition information acquired by the auxiliary voltage acquisition unit and sending the auxiliary acquisition information to the auxiliary three-level master control unit.

6. The rail vehicle-based charging management system according to claim 5, characterized in that: The main control module is respectively connected to the auxiliary three-level master control unit and the power three-level master control unit for acquiring the auxiliary acquisition information and the power acquisition information; The main control module is also respectively connected to the auxiliary heating subsystem and the charging subsystem for communication, and is also used to determine the target subsystem in the auxiliary heating subsystem and the charging subsystem based on the detected charging temperature value, the auxiliary collection information and the power collection information.

7. The rail vehicle-based charging management system according to claim 6, characterized in that: The main control module is also communicatively connected to the auxiliary battery subsystem and the power battery subsystem respectively, and is used to determine the target power supply subsystem in the auxiliary battery subsystem and the power battery subsystem if the charging temperature value meets the charging conditions, or to control the auxiliary battery subsystem and each power battery subsystem to enter the corresponding low-temperature heating mode if the charging temperature value does not meet the charging conditions.

8. The rail vehicle-based charging management system according to claim 7, characterized in that: The auxiliary high-voltage box includes: at least one auxiliary high-voltage box relay; The auxiliary battery subsystem is communicatively connected to each of the auxiliary high-voltage box relays, and is configured to, if the auxiliary battery subsystem is determined to be the target power supply subsystem, sequentially close each of the auxiliary high-voltage box relays according to the voltage values ​​of the auxiliary battery clusters from small to large via the auxiliary three-level master control unit, thereby controlling the auxiliary three-level master control unit to establish a communication connection with the charging subsystem; The main control module is communicatively connected to the pantograph, and is used to control the pantograph to be raised, and to control the auxiliary battery subsystem to enter the first charging mode.

9. The rail vehicle-based charging management system according to claim 8, characterized in that: The power high-voltage box includes: at least one power high-voltage box relay; The power battery subsystem is communicatively connected to each of the power high-voltage box relays, and is configured to, if the power battery subsystem is determined to be the target power supply subsystem, sequentially close each of the power high-voltage box relays according to the voltage values ​​of the power battery clusters from small to large via the power three-level master control unit, thereby controlling the power three-level master control unit to establish a communication connection with the charging subsystem; The main control module is connected to the pantograph for controlling the pantograph to raise and lower the pantograph, and determining whether the combiner cabinet circuit breaker is in an open state. If so, the main control module controls the power battery subsystem to enter the second charging mode.

10. A railway locomotive, characterized in that: Applicable to the rail locomotive-based charging management system described in any one of claims 1-9.

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