Railway new energy locomotive bidirectional charging and discharging device and system supporting single-machine and multi-machine cooperation

Abstract

The invention discloses a railway new energy locomotive bidirectional charging and discharging device and system supporting single-machine and multi-machine cooperation. The locomotive charging and discharging device comprises a locomotive current collection module, a power supply module, at least one energy storage charger and a communication module, the locomotive current collection module is electrically connected with the power supply module; each energy storage charger is electrically connected with the power supply module; each locomotive current collection module is in communication connection with each energy storage charger through the communication module; the energy storage chargers are in communication connection; and the locomotive current collection module is used for sending a charging and discharging request instruction to each energy storage charger in the operation process of the locomotive, so that each energy storage charger transmits energy to the locomotive current collection module through the power supply module. According to the scheme, synchronous traction, charging and discharging of the new energy locomotive are achieved, so that the problem that the new energy locomotive is charged by manually operating an inserting gun is solved, and meanwhile the problem that the service life of the battery module is shortened is avoided.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of rail transit technology; in particular, they relate to a bidirectional charging and discharging device and system for railway new energy locomotives that supports single-multiple locomotive coordination. Background Technology

[0002] With the advent of new energy locomotives for railways, the installed capacity of locomotive energy storage systems is constantly increasing. The issues of safe, efficient, green, intelligent, and fast-charging locomotive charging are becoming increasingly prominent.

[0003] Current technologies generally employ vehicle charging devices, meaning that new energy vehicles include battery modules with an energy storage capacity of 1000-2000 kWh. During charging, the charging process involves manually operating charging guns, which is dangerous, time-consuming, and labor-intensive. Furthermore, the high current during charging causes the charging guns to overheat, severely impacting charging efficiency. Additionally, current new energy vehicles with 1000-2000 kWh onboard battery modules typically undergo full charging while stationary. After full charging, the vehicle continues to move, but due to the limited energy within the battery modules, insufficient energy occurs when the vehicle is far from the charging source. This means the battery modules are usually fully discharged during operation, leading to a continuous reduction in the battery module's lifespan. Summary of the Invention

[0004] This invention provides a bidirectional charging and discharging device and system for railway new energy locomotives that supports single-multiple locomotive collaboration, so as to realize synchronous traction and charging of new energy locomotives. This avoids the problems of manually operating the charging gun to charge new energy locomotives, and also avoids the reduction of battery module life.

[0005] To achieve the above objectives, embodiments of the present invention provide a bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration. The system includes: a locomotive current receiving module, a power supply module, at least one energy storage charger, and a communication module.

[0006] The locomotive current receiving module is electrically connected to the power supply module; each of the energy storage chargers is electrically connected to the power supply module; each locomotive current receiving module is communicatively connected to each of the energy storage chargers through the communication module; each of the energy storage chargers is communicatively connected.

[0007] The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during locomotive operation, so that each of the energy storage chargers can transfer energy to the locomotive current receiving module through the power supply module.

[0008] Optionally, the power supply module includes at least one ground power supply unit and / or a contact wire unit.

[0009] Optionally, the power supply module may include at least one ground power supply unit;

[0010] Each of the energy storage chargers is installed along the locomotive running track; each of the ground power supply units is installed along the locomotive running track; each of the energy storage chargers is connected to the power supply bus; each of the ground power supply modules is connected to the power supply bus; the locomotive current receiving module is used to connect to any of the ground power supply modules when the locomotive moves to the position of any of the ground power supply modules.

[0011] Each of the ground power supply modules is communicatively connected to each of the energy storage chargers via the communication module; each of the energy storage chargers is communicatively connected.

[0012] The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during operation or when stationary, so that each energy storage charger can transmit energy to the locomotive current receiving module through each of the power supply units.

[0013] Optionally, the communication module includes a leaky cable unit, at least one leaky cable gateway unit, and an Ethernet unit.

[0014] The leaky cable unit is installed along the locomotive's running track; the leaky cable unit maintains a preset fixed distance from the locomotive's current receiving module; the leaky cable unit is communicatively connected to each of the energy storage chargers through the leaky cable gateway unit and the Ethernet unit.

[0015] Optionally, the communication module includes a wireless communication unit.

[0016] Optionally, the locomotive current receiving module is connected in contact with the ground power supply unit;

[0017] And / or, the locomotive current receiving module is coupled to the ground power supply module.

[0018] Optionally, the locomotive current receiving module includes a locomotive charger and discharger and a charging and discharging control unit;

[0019] The ground power supply unit includes at least a power proximity switch unit;

[0020] The locomotive charger / discharger is connected in contact with the power proximity switch unit; the power proximity switch unit is activated when it receives a transmission signal from the locomotive charger / discharger.

[0021] The charging and discharging control unit is used to send charging and discharging request commands to each of the energy storage chargers through the communication module.

[0022] Optionally, the ground power supply module further includes a power supply controller; the power supply controller is also communicatively connected to each of the energy storage chargers through the communication module;

[0023] The power supply controller is used to detect the status information within the ground power supply module in real time and send the status information to each of the energy storage chargers through the communication module; wherein, the status information includes: power proximity switch unit temperature information, power proximity switch unit current information, power proximity switch unit switching information, and charging / discharging request command information.

[0024] Optionally, the charging and discharging control unit is also used to detect in real time the actual charging information of the locomotive current receiving module, the working status information of the locomotive current receiving module, and the status information of the locomotive battery.

[0025] Optionally, the locomotive current receiving module includes a locomotive charging and discharging coil and a charging and discharging control unit;

[0026] The ground power supply module includes at least a coupling coil unit;

[0027] The locomotive charging and discharging coil is coupled to the coupling coil unit; the coupling coil unit is used to radiate and transmit energy when it receives the transmission signal from the locomotive charging and discharging coil.

[0028] The charging and discharging control unit is used to send charging and discharging request commands to each of the energy storage chargers through the communication module.

[0029] Optionally, the power supply module may include a contact wire unit;

[0030] Each of the energy storage chargers is electrically connected to the overhead contact line unit; the locomotive current receiving module is electrically connected to the overhead contact line unit;

[0031] The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during locomotive operation, so that each energy storage charger can transmit energy to the locomotive current receiving module through the contact network unit.

[0032] Optionally, the energy storage charger includes a cluster scheduling unit, a control unit, and a bidirectional energy conversion unit;

[0033] The cluster scheduling unit is used to coordinate with other energy storage chargers to transmit energy to the locomotive current receiving module based on the charging and discharging commands of the locomotive current receiving module.

[0034] The control unit is used to determine the transmission energy switching mode based on the coordination and scheduling results;

[0035] The bidirectional energy conversion unit is used to control the switching between charging mode and energy feedback discharge mode according to the energy transmission switching mode.

[0036] In a second aspect, embodiments of the present invention also provide a bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple locomotive collaboration. The system includes the bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple locomotive collaboration described in the first aspect, and also includes multiple other locomotive current receiving modules.

[0037] When the power supply module includes a contact wire unit, it also includes a switch adjustment unit; each of the switch adjustment units is disposed between the contact wire units.

[0038] In this embodiment of the invention, the locomotive current receiving module is electrically connected to the power supply module; each energy storage charger is electrically connected to the power supply module; each locomotive current receiving module is communicatively connected to each energy storage charger via a communication module; and each energy storage charger is communicatively connected. Thus, during locomotive operation, the locomotive current receiving module sends charging and discharging request commands to each energy storage charger. During locomotive operation, each energy storage charger transmits energy to the locomotive current receiving module through the power supply module, thereby achieving synchronous traction and charging / discharging of the new energy locomotive. This avoids the problems associated with manually operating charging guns to charge new energy locomotives and also prevents a reduction in the lifespan of the battery modules.

[0039] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a bidirectional charging and discharging device for a railway new energy locomotive that supports single-multiple locomotive collaboration, provided in an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0048] Figure 8 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of the structure of a bidirectional charging and discharging system for a railway new energy locomotive that supports single-multiple locomotive collaboration, provided by an embodiment of the present invention;

[0051] Figure 11 This is a schematic diagram of another bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention;

[0052] Figure 12 This is a schematic diagram of another bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention. Detailed Implementation

[0053] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] Figure 1 This is a schematic diagram of the structure of a bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple locomotive collaboration, provided by an embodiment of the present invention. Figure 1 As shown, the locomotive charging and discharging device includes: a locomotive current receiving module 10, a power supply module 20, at least one energy storage charger 30, and a communication module 40;

[0056] The locomotive current receiving module 10 is electrically connected to the power supply module 20; each energy storage charger 30 is electrically connected to the power supply module 20 (see thin solid line); the locomotive current receiving module 10 is communicatively connected to each energy storage charger 30 through the communication module 40 (see thick solid line); each energy storage charger 30 is communicatively connected to each other.

[0057] The locomotive current receiving module 10 is used to send charging and discharging request commands to each energy storage charger 30 during operation or when stationary, so that each energy storage charger 30 can transfer energy to the locomotive current receiving module 10 through the power supply module 20.

[0058] In this embodiment, the locomotive current receiving module 10 is a charging and discharging module installed on the locomotive; the operation or stationary process of the locomotive current receiving module 10 is the operation process and stationary process of the locomotive; the locomotive current receiving module 10 can send charging and discharging request commands during operation; it can also send charging and discharging request commands when stationary; the charging and discharging request commands in each state can include charging and discharging target voltage information, charging and discharging target current information, and charging and discharging target power information; the locomotive current receiving module 10 is electrically connected to the battery BSM system on the locomotive; that is, the locomotive current receiving module 10 sends charging and discharging request commands, thereby meeting the target charging and discharging requirements of the battery BSM system on the locomotive;

[0059] It should be noted that the specific type of the locomotive current receiving module 10 can be determined according to the specific configuration type of the power supply module 20, and there is no limitation thereto; for example, the locomotive current receiving module 10 can be in the form of a pantograph or in the form of a power receiving shoe.

[0060] In this embodiment, the power supply module 20 can function as a means for each energy storage charger 30 to transmit energy to the locomotive current receiving module 10 when the locomotive current receiving module 10 sends a request command to each energy storage charger 30 under different states. Specifically, when the locomotive current receiving module 10 sends a charging request command to each energy storage charger 30 during traction operation or when stationary, each energy storage charger 30 can transmit energy to the locomotive current receiving module 10 through the power supply module 20. When the locomotive current receiving module 10 sends a discharge request command to each energy storage charger 30 during braking operation, each energy storage charger 30 can absorb the braking energy transmitted by the locomotive current receiving module 10 through the power supply module 20.

[0061] It should be noted that the power supply module 20 may include ground power supply or space power supply, and this embodiment does not limit it.

[0062] In this embodiment, the energy storage chargers 30 are interconnected, and the locomotive current receiving module 10 is connected to each energy storage charger 30 via a communication module 40. Thus, when the locomotive current receiving module 10 sends charging / discharging request commands under different states, the energy distribution within each energy storage charger 30 is coordinated, allowing simultaneous discharge to the locomotive current receiving module 10, thereby improving the locomotive's charging efficiency. The coordinated energy distribution within each energy storage charger 30 can be determined according to specific circumstances, and this embodiment does not impose any limitations on this. Furthermore, each energy storage charger 30 can be a photovoltaic charging module or a charging module for other new energy sources; this is not specifically limited. A photovoltaic charging module can include an opto-isolation unit and a DC / DC conversion unit, which is also not limited.

[0063] It should be noted that the locomotive current receiving module 10 is connected to each energy storage charger 30 through the communication module 40. This enables each energy storage charger 30 to transmit energy to the locomotive current receiving module 10 through the power supply module 20 under different locomotive states. This embodiment does not limit the communication form and communication structure of the communication module 40, which can be set according to the power supply module 20.

[0064] It should also be noted that the locomotive current receiving module 10 sends charging and discharging request commands to each energy storage charger 30 during operation or when stationary. Each energy storage charger 30 always transmits energy to the locomotive current receiving module 10 through the power supply module 20 in accordance with the charging and discharging request commands.

[0065] In this embodiment of the invention, the locomotive current receiving module 10 sends charging and discharging request commands to each energy storage charger 30 during operation or when stationary. Thus, during locomotive operation, each energy storage charger 30 transmits energy to the locomotive current receiving module 10 through the power supply module 20, realizing synchronous traction and charging and discharging of the new energy locomotive. This avoids the problems of manually operating the charging gun to charge the new energy locomotive, and also avoids the reduction of battery module life.

[0066] Optionally, based on the above embodiments, each module can be further described in detail. Figure 2 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 2-3 As shown, the power supply module 20 in the device includes at least one ground power supply unit 21 and / or a contact network unit 22.

[0067] Specifically, the power supply module 20 can adopt a power supply form of multiple ground power supply units 21, which can realize segmented continuous power supply during locomotive operation; or, the power supply module 20 can adopt a power supply form of contact wire unit 22, which can realize continuous power supply during locomotive operation; or, it can also adopt a combination of contact wire unit 22 and multiple ground power supply units 21.

[0068] The two power supply methods of the power supply module 20 are described in detail below; this embodiment uses the power supply module as the ground power supply method for explanation. Figure 4 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; when the power supply module 20 includes at least one ground power supply unit 21; each energy storage charger 30 is set along the locomotive running track; each ground power supply unit 21 is set along the locomotive running track; each energy storage charger 30 is connected to the power supply bus L; each ground power supply unit 21 is connected to the power supply bus L; the locomotive current receiving module 10 is used to electrically connect to any ground power supply unit 21 when the locomotive runs to the position of any ground power supply unit 21;

[0069] The locomotive current receiving module 10 is connected to each energy storage charger 30 via the communication module 40; each ground power supply unit 21 is connected to each energy storage charger 30 via the communication module 40; each energy storage charger 30 is connected to each other; the locomotive current receiving module 10 is used to send charging and discharging request commands to each energy storage charger 30 during operation or when stationary, so that each energy storage charger 30 can transmit energy to the locomotive current receiving module 10 through each power supply unit 21.

[0070] Specifically, the ground power supply unit 21 can be a switching device; when the locomotive current receiving module 10 is stationary, it sends a charging and discharging request command to each energy storage charger 30. Each energy storage charger 30 controls the corresponding power supply unit 21 to close when the locomotive current receiving module 10 is stationary. In this way, each energy storage charger 30 transmits energy to the locomotive current receiving module 10 through the corresponding power supply unit 21. Of course, it is understandable that when the locomotive current receiving module 10 is stationary, it can also include at least two chargers / dischargers. This avoids the inability to complete charging and discharging due to the failure of any charger / discharger. Correspondingly, when the locomotive current receiving module 10 is stationary, at least two power supply switches 21 can also be set to avoid the inability to complete power supply due to the failure of any power supply switch.

[0071] When the locomotive current receiving module 10 is in operation, it sends charging and discharging request commands to each energy storage charger 30. Each energy storage charger 30 can control each power supply unit 21 to close or open according to the speed and direction of the locomotive. Thus, when the locomotive current receiving module 10 reaches the corresponding position, each energy storage charger 30 can transfer energy to the locomotive current receiving module 10 through the corresponding power supply unit 21. Specifically, each energy storage charger 30 may include a main energy storage charger and multiple slave energy storage chargers. The main energy storage charger sends control commands to each slave energy storage charger and the corresponding power supply unit 21 according to the speed and direction of the locomotive. In this way, the power supply unit 21 in the forward direction can be controlled to close in advance before the locomotive current receiving module 10 arrives (i.e., the switching action of the power supply unit 21 must be synchronized with the speed and direction of the locomotive). Each slave energy storage charger can control its corresponding power supply unit 21 to open or remain closed, thereby ensuring that when the locomotive current receiving module 10 reaches the corresponding position, each energy storage charger 30 can transfer a certain amount of energy to the locomotive current receiving module 10 through the corresponding power supply unit 21.

[0072] It is understandable that during the operation of the locomotive current receiving module 10, each power supply switch 21 can also be set in two sets to avoid failure of any set of power supply switches to complete the power supply.

[0073] It should be noted that the locomotive current receiving module 10 is connected to each energy storage charger 30 via the communication module 40; each ground power supply unit 21 is also connected to each energy storage charger 30 via the communication module 40; in this embodiment, the specific communication form and communication structure of the communication module 40 can be various, and no limitation is made thereto.

[0074] Optionally, based on the above embodiment where the power supply module 20 is powered by ground, the communication module 40 can be further refined. Figure 5 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 5As shown, the communication module 40 includes a leaky cable unit 41, at least one leaky cable gateway unit 42, and an Ethernet unit 43.

[0075] The leaky cable unit 41 is installed along the locomotive running track; the leaky cable unit 41 maintains a preset fixed distance from the locomotive current receiving module 10; the leaky cable unit 41 is connected to the Ethernet unit 43 through the leaky cable gateway unit 42; the Ethernet unit 43 is connected to each energy storage charger 30.

[0076] Specifically, the locomotive current receiving module 10 includes a transmitter; the charging and discharging request commands output by the transmitter in the locomotive current receiving module 10 are transmitted to each energy storage charger 30 through the leaky cable unit 41, at least one leaky cable gateway unit 42, and Ethernet unit 43, thus realizing the communication connection between the locomotive current receiving module 10 and each energy storage charger 30; at the same time, each power supply unit 21 includes a transmitter, and the transmitter in each power supply unit 21 is also connected to each energy storage charger 30 through the leaky cable unit 41, at least one leaky cable gateway unit 42, and Ethernet unit 43; thus, information sharing between the locomotive current receiving module 10, each power supply unit 21, and each energy storage charger 30 is realized through the leaky cable unit 41, at least one leaky cable gateway unit 42, and Ethernet unit 43.

[0077] In addition, in this embodiment, the leaky cable unit 41 maintains a preset fixed distance from the locomotive current receiving module 10, which can improve the communication reliability and communication stability between the locomotive current receiving module 10 and each energy storage charger 30.

[0078] Optionally, in other embodiments, Figure 6 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 6 As shown, the communication module 40 includes a wireless communication unit 44.

[0079] Specifically, the wireless communication unit 44 may include a 4G / 5G module, a Wi-Fi module, and a Bluetooth module; the locomotive current receiving module 10 can also communicate with each energy storage charger 30 through the wireless communication unit 44; at the same time, each power supply unit 21 can also communicate with each energy storage charger 30 through the wireless communication unit 44.

[0080] Optionally, when the locomotive current receiving module 10 moves to the position of any ground power supply unit 21, the way it is electrically connected to any ground power supply unit 21 can include various methods. Specifically, the locomotive current receiving module 10 is in contact connection with the ground power supply unit 21; and / or, the locomotive current receiving module 10 is coupled connection with the ground power supply unit 21. This embodiment does not limit the connection method between the locomotive current receiving module 10 and the ground power supply unit 21.

[0081] Optionally, in some embodiments, the locomotive current receiving module 10 is connected in contact with the ground power supply unit 21. Figure 7 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 7 As shown, specifically, the locomotive current receiving module 10 includes a locomotive charger / discharger 11 and a charge / discharge control unit 12; the ground power supply unit 21 includes at least a power proximity switch unit 211; the locomotive charger / discharger 11 is in contact with the power proximity switch unit 211; the power proximity switch unit 211 is used to start working when it receives the transmission signal from the locomotive charger / discharger 11; the charge / discharge control unit 12 is used to send charge / discharge request commands to each energy storage charger 30 through the communication module 40.

[0082] Specifically, when the locomotive current receiving module 10 moves to any position of the power proximity switch unit 211, the power proximity switch unit 211 is activated upon receiving the transmission signal from the locomotive charger / discharger 11, thereby enabling each energy storage charger 30 to charge / discharge the locomotive current receiving module 10 through the power proximity switch unit 211 based on the charging / discharging request command; in this embodiment, the locomotive charger / discharger 11 can be a power receiving shoe.

[0083] Optional, continue to refer to Figure 7 The ground power supply unit 21 also includes a power supply controller 212; the power supply controller 212 is also connected to each energy storage charger 30 via a communication module 40; the power supply controller 212 is used to detect the status information in the ground power supply unit 21 in real time, and send the status information to each energy storage charger 30 via the communication module 40; wherein, the status information includes: power proximity switch unit temperature information, power proximity switch unit current information, power proximity switch unit switching information and charging / discharging request command information.

[0084] The power supply controller 212 can detect the status information within the ground power supply unit 21 in real time and send the status information to each energy storage charger 30 via the communication module 40. Each energy storage charger 30 performs safety monitoring and safe charging and discharging of the power supply unit 21 based on the status information. For example, when the temperature of the power proximity switch unit is detected to be too high, each energy storage charger 30 stops charging and discharging; when it detects...

[0085] When an overcurrent occurs in the power proximity switch unit current information, each energy storage charger 30 stops charging and discharging; or when a mismatch is detected between the power proximity switch unit current information and the charging / discharging request command information, each energy storage charger 30 can coordinate charging and discharging; when the power proximity switch unit current information is detected to be 0, each energy storage charger 30 can correspondingly delay the power proximity switch unit to disconnect; when the detected current power proximity switch unit switch information is disconnected, but the power proximity switch unit current information is still not 0, each energy storage charger outputs a disconnect command to ensure charging and discharging safety. When the locomotive speed information is greater than the preset speed information, each energy storage charger can control the corresponding power supply unit 21 at the front of the locomotive to disconnect in advance, thus ensuring the locomotive's driving safety.

[0086] In addition, the power supply controller 212 can determine the train's direction of travel based on the power proximity switch unit's switching information. Specifically, when the power supply controller 212 detects that the power proximity switch unit's switching information indicates that the first power proximity switch is open, and after a preset time, detects that the power proximity switch unit's switching information indicates that the second power proximity switch is open, the train's direction of travel can be determined based on the power proximity switch's number information.

[0087] Optional, continue to refer to Figure 7 The charging and discharging control unit 12 is also used to detect in real time the actual charging information of the locomotive current receiving module, the working status information of the locomotive current receiving module, and the status information of the locomotive battery.

[0088] The charging and discharging control unit 12 can detect the actual charging information, operating status information, and battery status information of the locomotive current receiving module in real time, and send them to each energy storage charger 30 through the communication module 40. Each energy storage charger 30 performs safety monitoring and safe charging and discharging of the locomotive current receiving module. Specifically, the actual charging information of the locomotive current receiving module includes actual charging and discharging current information and charging and discharging voltage information; the operating status information of the locomotive current receiving module includes the locomotive speed, the contact temperature information between the charger and the ground power supply unit, and the contact pressure information between the charger and the ground power supply unit; the battery status information includes the charging and discharging current information, the charging and discharging voltage information, the actual battery capacity information, and the battery temperature information. For example, when the actual charging information of the locomotive current receiving module does not match the charging and discharging request command, each energy storage charger can coordinate charging and discharging; when the contact pressure information between the charger and the ground power supply unit is greater than the preset pressure information, each energy storage charger stops charging and discharging.

[0089] Optionally, in other embodiments, the locomotive current receiving module 10 is connected to the ground power supply unit 21 in a non-contact manner. Figure 8This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 8 As shown, the locomotive power receiving module 10 includes a locomotive charging and discharging coil 13 and a charging and discharging control unit 11; the ground power supply unit 21 includes at least a coupling coil unit 213; the locomotive charging and discharging coil 13 is coupled to the coupling coil unit 213; the coupling coil unit 213 is used to radiate and transmit energy when it receives the transmission signal from the locomotive charging and discharging coil 13; the charging and discharging control unit 12 is used to send charging and discharging request commands to each energy storage charger 30 through the communication module 40.

[0090] Specifically, when the locomotive current receiving module 10 moves to any position of the coupling coil unit 213, the coupling coil unit 213 radiates and transmits energy when it receives the transmission signal of the locomotive charging and discharging coil 13, so that each energy storage charger 30 charges and discharges the locomotive current receiving module 10 through the coupling coil unit 213 based on the charging and discharging request command.

[0091] Optional, continue to refer to Figure 8 The ground power supply unit 21 also includes a power supply controller 212; the power supply controller 212 is also connected to each energy storage charger 30 via a communication module 40; the power supply controller 212 is used to detect the status information in the ground power supply unit 21 in real time, and send the status information to each energy storage charger 30 via the communication module 40; wherein, the status information includes: temperature information of the coupling coil unit and charging and discharging request command information.

[0092] Similarly, the power supply controller 212 can detect the status information in the coupling coil unit 213 in real time, and send the status information to each energy storage charger 30 through the communication module 40. Each energy storage charger 30 performs safety monitoring and safe charging and discharging of the coupling coil unit 213 according to the status information.

[0093] Optional, continue to refer to Figure 8 In this contactless solution, the charge / discharge control unit 12 is also used to detect in real time the actual charging information of the locomotive current receiving module, the working status information of the locomotive current receiving module, and the status information of the locomotive battery. Similarly, the charge / discharge control unit 121 can detect in real time the actual charging information of the locomotive current receiving module, the working status information of the locomotive current receiving module, and the status information of the locomotive battery, and send them to each energy storage charger 30 through the communication module 40. Each energy storage charger 30 performs safety monitoring and safe charging / discharging of the charge / discharge control unit 121.

[0094] Optionally, the following description uses power supply module 20 as the form of space power supply. Figure 9 This is a schematic diagram of another bidirectional charging and discharging device for railway new energy locomotives that supports single-multiple machine collaboration, provided by an embodiment of the present invention; as shown. Figure 9As shown, when the power supply module 20 includes the contact wire unit 22, each energy storage charger 30 is electrically connected to the contact wire unit 22; the locomotive current collection module 10 is electrically connected to the contact wire unit 22; the locomotive current collection module is communicatively connected to each energy storage charger through the communication module 40; and each energy storage charger 30 is communicatively connected to each other.

[0095] The locomotive current receiving module 10 is used to send charging and discharging request commands to each energy storage charger 30 during locomotive operation so that each energy storage charger 30 can transmit energy to the locomotive current receiving module 10 through the contact network unit 22.

[0096] Specifically, in this embodiment, the locomotive current receiving module 10 may include a pantograph; when the locomotive current receiving module 10 is stationary, it sends a charge / discharge request command to each energy storage charger 30, and each energy storage charger 30 charges and discharges the locomotive current receiving module 10 through the contact network unit 22; when the locomotive current receiving module 10 is in operation, it sends a charge / discharge request command to each energy storage charger 30, and each energy storage charger 30 charges and discharges the locomotive current receiving module 10 through the contact network unit 22.

[0097] It should be noted that the locomotive current receiving module 10 is communicatively connected to each energy storage charger 30 via the communication module 40. In this embodiment, the specific communication form and structure of the communication module 40 can be varied and are not limited thereto. During operation or when stationary, the locomotive current receiving module 10 sends charging / discharging request commands to each energy storage charger 30. Each energy storage charger 30 can always transmit energy to the locomotive current receiving module 10 via the contact network unit 22 according to the charging / discharging request commands.

[0098] It should also be noted that by adopting the form of contact wire unit 22, the existing technology of inputting a fixed charging voltage to contact wire unit 22 is avoided. In this way, a charger other than the locomotive battery needs to be installed in the locomotive, which greatly reduces the space utilization rate inside the locomotive.

[0099] Optionally, based on the above embodiment where the power supply module is air-powered, the communication module 40 can be further refined. The communication module 40 may also include a leaky cable unit 41, at least one leaky cable gateway unit 42, and an Ethernet unit 43. The leaky cable unit 41 is arranged parallel to the contact wire unit 22. The leaky cable unit 41 and the contact wire unit 22 maintain a preset fixed distance. The leaky cable unit 41 is communicatively connected to the Ethernet unit 43 through the leaky cable gateway unit 42. The Ethernet unit 43 is communicatively connected to each energy storage charger 30. In this way, information sharing between the locomotive current receiving module 10 and each energy storage charger 30 is realized through the leaky cable unit 41, at least one leaky cable gateway unit 42, and Ethernet unit 43.

[0100] In addition, in this embodiment, the leaky cable unit 41 and the contact wire unit 22 maintain a preset fixed distance; this can improve the communication reliability and stability between the locomotive current receiving module 10 and each energy storage charger 30.

[0101] It is understandable that in embodiments where the power supply module 20 is air-powered, the communication module 40 may also include a wireless communication unit. The locomotive current receiving module 10 may also communicate with each energy storage charger 30 via the wireless communication unit.

[0102] Optionally, in some embodiments, reference is made to Figure 1-9 Each of the energy storage chargers 30 includes a cluster scheduling unit, a control unit, and a bidirectional energy conversion unit. The cluster scheduling unit is used to coordinate with other energy storage chargers to transmit energy to the locomotive current receiving module independently or in a multi-unit coordinated manner based on the charging and discharging request command of the locomotive current receiving module. The control unit is used to determine the energy transmission switching mode based on the coordination scheduling result. The bidirectional energy conversion unit is used to control the switching between the charging mode and the energy feedback discharge mode according to the energy transmission switching mode.

[0103] In the above embodiments, under different power supply methods, energy can be coordinated and allocated among the energy storage chargers 30. Specifically, each energy storage charger 30 may include a cluster scheduling unit, a control unit, and a bidirectional energy conversion unit. Thus, each energy storage charger 30 may include a master energy storage charger and multiple slave energy storage chargers. The cluster scheduling unit within the master energy storage charger, based on the charging and discharging request command from the locomotive's current receiving module, coordinates with other energy storage chargers to independently or collaboratively recover regenerative braking energy from the locomotive; it may also independently or collaboratively charge the locomotive. The control unit within each energy storage charger can determine the energy transfer switching mode based on the coordination and scheduling results. The energy transfer switching mode includes switching from a charging mode to a mode for recovering regenerative braking energy from the locomotive. Thus, the bidirectional energy conversion unit within each energy storage charger can switch between the charging mode and the energy feedback discharge mode according to the energy transfer switching mode.

[0104] Based on the same inventive concept, this invention also provides a bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple locomotive collaboration. Figure 10 This is a schematic diagram of the structure of a bidirectional charging and discharging system for a railway new energy locomotive that supports single-multiple locomotive collaboration, provided by an embodiment of the present invention; Figure 11 This is a schematic diagram of another bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple-machine collaboration, provided by an embodiment of the present invention; Figure 12 This is a schematic diagram of another bidirectional charging and discharging system for railway new energy locomotives that supports single-multiple locomotive collaboration, provided by an embodiment of the present invention; as shown. Figure 10-12As shown, the system includes the bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination as described in the above embodiment, and also includes multiple other locomotive current receiving modules 10; when the power supply module 20 includes a catenary unit 22, it also includes a switch adjustment unit K; each switch adjustment unit K is disposed between the catenary units 22 (see...). Figure 11 and Figure 12 , Figure 12 (This is a combination of two power supply methods). Since this embodiment includes the locomotive charging and discharging device of the above embodiments and also possesses the beneficial effects of the above embodiments, it will not be repeated here.

[0105] In addition, the bidirectional charging and discharging system of the locomotive also includes multiple other locomotive current receiving modules 10; thus, the bidirectional charging and discharging system can also enable each energy storage charging control module to charge and discharge multiple locomotives; to coordinate the charging and discharging of multiple locomotives, when the power supply module 20 includes a contact wire unit 22, it also includes each switch adjustment unit K; each switch adjustment unit K is arranged between the contact wire units 22, so that multiple locomotives can be charged and discharged through the switch adjustment units K; for example, when the rearmost train is fully charged and the preceding train needs to be charged, the switch adjustment unit near the rearmost train can be controlled to open, and at the same time, the switch adjustment unit near the preceding train can be controlled to close; this embodiment does not specifically limit the control logic of each switch adjustment unit, and it needs to be determined according to the actual charging needs of each train.

[0106] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive collaboration, characterized in that, include: The locomotive includes a current receiving module, a power supply module, at least one energy storage charger, and a communication module. The locomotive current receiving module is electrically connected to the power supply module; each of the energy storage chargers is electrically connected to the power supply module; each locomotive current receiving module is communicatively connected to each of the energy storage chargers through the communication module; each of the energy storage chargers is communicatively connected. The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during locomotive operation, so that each of the energy storage chargers can transfer energy to the locomotive current receiving module through the power supply module.

2. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 1, characterized in that, The power supply module includes at least one ground power supply unit and / or, a contact network unit.

3. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 2, characterized in that, When the power supply module includes at least one ground power supply unit; Each of the energy storage chargers is installed along the locomotive running track; each of the ground power supply units is installed along the locomotive running track; each of the energy storage chargers is connected to the power supply bus; each of the ground power supply modules is connected to the power supply bus; the locomotive current receiving module is used to connect to any of the ground power supply modules when the locomotive moves to the position of any of the ground power supply modules. Each of the ground power supply modules is communicatively connected to each of the energy storage chargers via the communication module; each of the energy storage chargers is communicatively connected. The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during operation or when stationary, so that each energy storage charger can transmit energy to the locomotive current receiving module through each of the power supply units.

4. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 3, characterized in that, The communication module includes a leaky cable unit, at least one leaky cable gateway unit, and an Ethernet unit. The leaky cable unit is installed along the locomotive's running track; the leaky cable unit maintains a preset fixed distance from the locomotive's current receiving module; the leaky cable unit is communicatively connected to each of the energy storage chargers through the leaky cable gateway unit and the Ethernet unit.

5. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 4, characterized in that, The communication module includes a wireless communication unit.

6. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 3, characterized in that, The locomotive current receiving module is connected to the ground power supply unit in contact. And / or, the locomotive current receiving module is coupled to the ground power supply module.

7. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 6, characterized in that, The locomotive current receiving module includes a locomotive charger and discharger and a charging and discharging control unit. The ground power supply unit includes at least a power proximity switch unit; The locomotive charger / discharger is connected in contact with the power proximity switch unit; the power proximity switch unit is activated when it receives a transmission signal from the locomotive charger / discharger. The charging and discharging control unit is used to send charging and discharging request commands to each of the energy storage chargers through the communication module.

8. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 7, characterized in that, The ground power supply module also includes a power supply controller; the power supply controller is also connected to each of the energy storage chargers via the communication module. The power supply controller is used to detect the status information within the ground power supply module in real time and send the status information to each of the energy storage chargers through the communication module; wherein, the status information includes: power proximity switch unit temperature information, power proximity switch unit current information, power proximity switch unit switching information, and charging / discharging request command information.

9. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 7, characterized in that, The charging and discharging control unit is also used to detect in real time the actual charging information of the locomotive current receiving module, the working status information of the locomotive current receiving module, and the status information of the locomotive battery.

10. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 6, characterized in that, The locomotive current receiving module includes a locomotive charging and discharging coil and a charging and discharging control unit; The ground power supply module includes at least a coupling coil unit; The locomotive charging and discharging coil is coupled to the coupling coil unit; the coupling coil unit is used to radiate and transmit energy when it receives the transmission signal from the locomotive charging and discharging coil. The charging and discharging control unit is used to send charging and discharging request commands to each of the energy storage chargers through the communication module.

11. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 2, characterized in that, When the power supply module includes a contact wire unit; Each of the energy storage chargers is electrically connected to the overhead contact line unit; the locomotive current receiving module is electrically connected to the overhead contact line unit; The locomotive current receiving module is used to send charging and discharging request commands to each of the energy storage chargers during locomotive operation, so that each energy storage charger can transmit energy to the locomotive current receiving module through the contact network unit.

12. The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination according to claim 1, characterized in that, The energy storage charger includes a cluster scheduling unit, a control unit, and a bidirectional energy conversion unit; The cluster scheduling unit is used to coordinate with other energy storage chargers based on the charging and discharging commands of the locomotive current receiving module to transmit energy to the locomotive current receiving module independently or in a multi-unit coordinated manner. The control unit is used to determine the transmission energy switching mode based on the coordination and scheduling results; The bidirectional energy conversion unit is used to control the switching between charging mode and energy feedback discharge mode according to the energy transmission switching mode.

13. A bidirectional charging and discharging system for new energy railway locomotives supporting single-multiple locomotive collaboration, characterized in that, The bidirectional charging and discharging device for railway new energy locomotives supporting single-multiple locomotive coordination, as described in any one of claims 1-12, also includes multiple other locomotive current receiving modules; When the power supply module includes a contact wire unit, it also includes a switch adjustment unit; each of the switch adjustment units is disposed between the contact wire units.

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