A pure power battery locomotive power source selection method

Abstract

This invention relates to the field of locomotive technology and provides a method for selecting a pure battery-powered locomotive power source. The method includes: determining the position of a selection switch on the BMS cabinet; if it is in the first or second position, selecting the corresponding locomotive power battery or trailer power battery for operation; if it is in the third position, determining whether any driver's cab is activated; if any driver's cab is activated, determining whether two or more driver's cabs are activated; if only one driver's cab is activated, determining the position of the selection switch in the activated driver's cab; if it is in the first position, selecting the locomotive power battery for operation; if it is in the second position, selecting the trailer power battery for operation; if it is in the third position, stopping the process. This invention solves the problem of selecting and switching locomotive / trailer power sources in existing dual-driver's cab layouts, improving work efficiency while ensuring safe operation.

Description

Technical Field

[0001] This invention relates to the field of locomotive technology, and in particular to a method for selecting a power source for a pure battery-powered locomotive. Background Technology

[0002] With the rapid development of new energy sources, pure battery-powered locomotives are gradually appearing in the rail transit field. However, due to space limitations, the locomotives themselves can only carry a limited capacity of power batteries, requiring an additional trailer to carry the batteries for long-distance traction. The addition of the trailer raises the issue of power source selection and switching. Furthermore, since the locomotives have two driver's cabs, there is the problem of different driver's cabs selecting different power sources. To address this technical issue, a method for selecting the power source for pure battery-powered locomotives is proposed. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a method, system, computer equipment and storage medium for selecting a power source for a pure power battery locomotive.

[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] In a first aspect, in one embodiment of the present invention, a method for selecting a power source for a pure battery-powered locomotive is provided. This method is applied to a locomotive, which includes a BMS cabinet and at least two control rooms. The BMS cabinet is equipped with a selection switch S3 for selecting either the locomotive's power battery or the trailer's power battery. The driver's cab is equipped with a selection switch S for selecting either the locomotive's power battery or the trailer's power battery, and also with a switch K for activating the driver's cab. The method includes:

[0006] S10. Determine whether the selector switch S3 on the BMS cabinet is in the first, second, or third position. If it is in the first or second position, select the corresponding locomotive power battery or trailer power battery to start working. If it is in the third position, proceed to step S20.

[0007] S20. Determine whether any driver's cab is activated. If any driver's cab is activated, proceed to step S30. If no driver's cab is activated, stop proceeding to the next step.

[0008] S30. Determine if there are more than two driver's cabs activated. If so, issue a conflict warning and the BMS will not be activated. If only one driver's cab is activated, proceed to step S40.

[0009] S40. Determine whether the selected switch S in the activated driver's cab is in the first, second, or third position. If it is in the first position, select the locomotive power battery to work; if it is in the second position, select the trailer power battery to work; if it is in the third position, stop execution.

[0010] As a further embodiment of the present invention, if the gear corresponding to the operation of the trailer power battery is selected in step S10, the locomotive BMS and the trailer BMS communicate to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, and then the trailer power battery is put into operation.

[0011] As a further aspect of the present invention, if the gear corresponding to the operation of the trailer power battery is selected in step S10, it includes:

[0012] If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

[0013] As a further aspect of the present invention, before step S20, it further includes determining whether the locomotive speed is zero, and if it is zero, then step S20 is executed.

[0014] As a further aspect of the present invention, it is determined whether the driver's cab is active by determining whether the key switch of the driver's cab is in a closed state.

[0015] As a further aspect of the present invention, the step of selecting the trailer power battery to operate in the second gear includes:

[0016] After the locomotive BMS communicates with the trailer BMS to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, the trailer's power battery is put into operation.

[0017] As a further aspect of the present invention, the step of selecting the trailer power battery to operate in the second gear includes:

[0018] If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

[0019] As a further embodiment of the present invention, there are two driver's cabs.

[0020] As a further aspect of the present invention, before step S20, the process is further included: if it is determined whether the locomotive is changing ends, then the execution is paused.

[0021] As a further aspect of the present invention, the driver's cab activation specifically involves connecting the locomotive TCMS to the BMS cabinet via communication.

[0022] The technical solution provided by this invention has the following beneficial effects: This invention solves the problem of selecting and switching the power source of locomotive / trailer in the existing dual-driver cab layout. The power source can be selected directly through the BMS cabinet selection switch, or it can be selected through the selection switch in the driver's cab. This is flexible and convenient, improves work efficiency, and ensures safe operation.

[0023] These or other aspects of the invention will become more apparent from the following description of embodiments. It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart illustrating a method for selecting a power source for a pure electric vehicle according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of a locomotive using a pure power battery locomotive power source selection method according to an embodiment of the present invention.

[0027] Figure 3 This is a flowchart illustrating the application of a pure power battery locomotive power source selection method according to an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0030] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] Specifically, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0032] Please see Figure 1 , Figure 1 This is a flowchart of a method for selecting a power source for a pure electric battery locomotive, as provided in an embodiment of the present invention. Figure 1 As shown, the pure battery locomotive power source selection method includes steps S10 to S40. This method is applied to locomotives, which include a BMS cabinet and at least two control rooms. The BMS cabinet is equipped with a selection switch S3 for selecting between the locomotive power battery and the trailer power battery. The driver's cab is equipped with a selection switch S for selecting between the locomotive power battery and the trailer power battery, and also with a switch K for activating the driver's cab.

[0033] The driver's cab activation specifically involves establishing a communication connection between the locomotive's TCMS and the BMS cabinet.

[0034] S10. Determine whether the selector switch S3 on the BMS cabinet is in the first, second, or third position. If it is in the first or second position, select the corresponding locomotive power battery or trailer power battery to start working. If it is in the third position, proceed to step S20.

[0035] In an embodiment of the present invention, if the gear corresponding to the operation of the trailer power battery is selected in step S10, the locomotive BMS and the trailer BMS communicate to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, and then the trailer power battery is put into operation.

[0036] In an embodiment of the present invention, if the gear corresponding to the operation of the trailer power battery is selected in step S10, it includes:

[0037] If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

[0038] S20. Determine whether any driver's cab is activated. If any driver's cab is activated, proceed to step S30. If no driver's cab is activated, stop proceeding to the next step.

[0039] In an embodiment of the present invention, before step S20, it is further included to determine whether the locomotive speed is zero; if it is zero, then step S20 is executed.

[0040] S30. Determine whether there are more than two driver's cabs that are activated. If so, issue a conflict warning and the BMS will not be activated. If only one driver's cab is activated, proceed to step S40.

[0041] S40. Determine whether the selected switch S in the activated driver's cab is in the first, second, or third position. If it is in the first position, select the locomotive power battery to work; if it is in the second position, select the trailer power battery to work; if it is in the third position, stop execution.

[0042] In an embodiment of the present invention, it is determined whether the driver's cab is active by determining whether the key switch of the driver's cab is in a closed state.

[0043] In an embodiment of the present invention, the step of selecting the trailer power battery to operate if it is the second gear includes:

[0044] After the locomotive BMS communicates with the trailer BMS to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, the trailer's power battery is put into operation.

[0045] In an embodiment of the present invention, the step of selecting the trailer power battery to operate if it is the second gear includes:

[0046] If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

[0047] It should be noted that if it is the third setting, it means that the power battery selection switch in the driver's cab is not selected.

[0048] In an embodiment of the present invention, there are two driver's cabs, namely driver's cab 1 and driver's cab 2.

[0049] In an embodiment of the present invention, before step S20, the process is further included: if it is determined whether the locomotive is changing ends, then execution is paused.

[0050] It should be noted that when the locomotive is changing ends, the driver and crew will disconnect the key signal. When the locomotive is in the changing end state, the selector switch S state will be locked, meaning that this signal will not be identified or changed until one end of the driver's cab is reactivated. In addition, the power battery continues to supply power to the locomotive's auxiliary loads during the changing end process.

[0051] like Figure 2 and 3 The specific application process of this invention includes:

[0052] There are three power source selection switches on the locomotive, located in the driver's cab at both ends of the locomotive and on the BMS cabinet in the engine room. The components involved are shown in the table below:

[0053] Location equipment Driver's Cab 1 Power source selection switch S1, driver control key K1 Driver's Cab 2 Power source selection switch S2, driver control key K2 BMS cabinet Power source selection switch S3

[0054] 1. The BMS cabinet selector switch has the highest priority and can be used as a redundant backup switch. That is, S3 is kept in the "zero position" for a long time. The selection signal will depend on the selector switch in the driver's cab that is activated. If the selector switch line in the driver's cab fails, the BMS cabinet selector switch can be activated. At this time, even if there is a failed line, the locomotive can still be operated.

[0055] 2. If the locomotive is only operating under shunting or short-running conditions, the locomotive power battery pack can be used. In this case, the BMS cabinet selector switch can be set to the "locomotive" position, and the BMS will not recognize the selection signal in the driver's cab.

[0056] 3. If the locomotive is only used for long-distance freight or passenger traction tasks and needs to use the trailer power battery pack, the BMS cabinet selector switch can be set to the "trailer" position, and the BMS will not recognize the selection signal in the driver's cab.

[0057] 4. If the locomotive's operating conditions are complex, the BMS cabinet selector switch can be set to the "zero position" and the power source can be flexibly switched through the selector switch in the driver's cab.

[0058] Before powering on, the driver sets the BMS cabinet selector switch S3 to the "zero" position, providing control power to the locomotive. Using the driver's control key K1 or K2, one end of the driver's cab is activated. The selector switch inside the activated driver's cab is then set to the desired power source position. The locomotive start button is pressed. The TCMS transmits the currently activated driver's cab signal (K1 or K2) to the BMS. The BMS reads the position of the selector switch inside the activated driver's cab. If it is in the "locomotive" position, the locomotive power battery is engaged. If it is in the "trailer" position, the locomotive BMS first communicates with the trailer BMS to confirm that the trailer BMS system has received control power, completed its self-test, and is fault-free before engaging the trailer power battery. If the selector switch is in the "zero" position, the locomotive microcomputer will report "Driver's cab 1 or 2 power battery selector switch not selected."

[0059] This invention solves the problem of selecting and switching the power source for locomotives / trailers in the existing dual-driver cab layout. The power source can be selected directly through the BMS cabinet selection switch, or it can be selected through the selection switch in the driver's cab. This is flexible and convenient, improves work efficiency, and ensures safe operation.

[0060] It should be understood that although the above description follows a certain order, these steps are not necessarily executed in that order. Unless otherwise expressly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, some steps in this embodiment may include multiple steps or multiple stages, which are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be performed alternately or in turn with other steps or at least a portion of the steps or stages in other steps.

[0061] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A method for selecting a power source for a pure battery-powered locomotive, characterized in that, This method is applied to a locomotive, which includes a BMS cabinet and at least two driver's cabs. The BMS cabinet is equipped with a selection switch S3 for selecting between the locomotive's power battery and the trailer's power battery. The driver's cab is equipped with a selection switch S for selecting between the locomotive's power battery and the trailer's power battery, and also with a switch K for activating the driver's cab. The method includes: S10. Determine whether the selector switch S3 on the BMS cabinet is in the first, second, or third position. If it is in the first or second position, select the corresponding locomotive power battery or trailer power battery to start working. If it is in the third position, proceed to step S20. S20. Determine whether any driver's cab is activated. If any driver's cab is activated, proceed to step S30. If no driver's cab is activated, stop proceeding to the next step. S30. Determine if there are more than two driver's cabs activated. If so, issue a conflict warning and the BMS will not be activated. If only one driver's cab is activated, proceed to step S40. S40. Determine whether the selected switch S in the activated driver's cab is in the first, second, or third position. If it is in the first position, select the locomotive power battery to work; if it is in the second position, select the trailer power battery to work; if it is in the third position, stop execution.

2. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, If the gear corresponding to the trailer power battery being put into operation is selected in step S10, the locomotive BMS and the trailer BMS will communicate to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, and then the trailer power battery will be put into operation.

3. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, If the appropriate gear for engaging the trailer's power battery is selected in step S10, it includes: If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

4. The method for selecting a power source for a pure electric battery locomotive as described in claim 3, characterized in that, Before step S20, the method further includes determining whether the locomotive speed is zero; if it is zero, then step S20 is executed.

5. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, To determine if the driver's cab is active, check if the key switch in the driver's cab is in the closed position.

6. The method for selecting a power source for a pure electric battery locomotive as described in claim 5, characterized in that, If the second setting is selected, the trailer's power battery will be put into operation, including: After the locomotive BMS communicates with the trailer BMS to confirm that the trailer BMS system has been powered on and completed its self-test without any faults, the trailer's power battery is put into operation.

7. The method for selecting a power source for a pure electric battery locomotive as described in claim 6, characterized in that, If the second setting is selected, the trailer's power battery will be put into operation, including: If the locomotive BMS and the trailer BMS fail to communicate, a communication fault will be detected between the locomotive and trailer BMS, and the operation of putting the trailer power battery into operation will be stopped.

8. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, There are two driver's cabs.

9. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, Before step S20, it also includes determining whether the locomotive is in a switching state. When the locomotive is in a switching state, the state of the selection switch S will be locked, and the selection of the driver's cab power battery selection switch will be suspended.

10. The method for selecting a power source for a pure electric battery locomotive as described in claim 1, characterized in that, The driver's cab activation specifically involves establishing a communication connection between the locomotive's TCMS and the BMS cabinet.

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