A hybrid locomotive safety protection system, a hybrid locomotive safety protection method

Abstract

The present invention provides a hybrid locomotive safety protection system and a hybrid locomotive safety protection method, which relate to the technical field of locomotive production and manufacturing. The hybrid locomotive safety protection system is characterized by comprising: a power supply; a charging device for charging the power battery of the hybrid locomotive; a hydrogenation device for hydrogenating the hydrogen storage system in the hydrogen storage room of the hybrid locomotive; a power battery protection device including a temperature detection component for detecting the power battery; a hydrogen storage protection device including a hydrogen concentration detector for detecting the hydrogen concentration in the hydrogen storage room; and an interlocking mechanism configured to control the charging device and the hydrogenation device to start alternatively and enable the power supply to be electrically connected to the power battery protection device and the hydrogen storage protection device respectively alternatively. By adopting a mechanical anti-fooling setting, the hydrogenation process and the charging process can only be carried out singly at the same time, which plays a role in protecting the safety of the hybrid locomotive, saves time and effort, and has high reliability.

Description

Technical Field

[0001] The present invention generally relates to the technical field of locomotive production and manufacturing. Specifically, it relates to a hybrid locomotive safety protection system and a hybrid locomotive safety protection method. Background Art

[0002] With the increasing attention to environmental issues, due to the advantage of zero carbon dioxide emissions of hydrogen fuel cell hybrid locomotives, hydrogen fuel cell hybrid locomotives have received extensive attention and vigorous development in the rail transit industry. However, there are no systematic standards and requirements for related safety.

[0003] Currently, for the safety during charging and hydrogen refueling of hydrogen fuel hybrid locomotives, it is artificially restricted that they cannot be carried out simultaneously, and parking brakes are applied to the locomotive during charging or hydrogen refueling and other restrictive measures. At the same time, conventional hydrogen concentration detectors use the locomotive control battery as the power source. When the locomotive is charging or hydrogen refueling, the locomotive is usually in a stopped state and the control power is not turned on. Therefore, the detector group does not work, and the safety during the whole process is in an uncontrolled state. Summary of the Invention

[0004] The present invention provides a hybrid locomotive safety protection system and a hybrid locomotive safety protection method, which ensure that the charging and hydrogen refueling processes are carried out separately and improve the use safety.

[0005] According to a first aspect of the present invention, there is provided a hybrid locomotive safety protection system, including:

[0006] A power supply;

[0007] A charging device for charging the power battery of the hybrid locomotive;

[0008] A hydrogen refueling device for refueling the hydrogen storage system in the hydrogen storage room of the hybrid locomotive;

[0009] A power battery protection device including a temperature detection member for detecting the power battery;

[0010] A hydrogen storage protection device including a hydrogen concentration detector for detecting the hydrogen concentration in the hydrogen storage room;

[0011] An interlock mechanism configured to control the charging device and the hydrogen refueling device to start alternately, and enable the power supply to be alternately electrically connected to the power battery protection device and the hydrogen storage protection device respectively.

[0012] In some embodiments, the interlock mechanism includes:

[0013] A charging lock provided on the charging device;

[0014] A charging key, selectively inserted into the charging lock, for opening and closing the charging device;

[0015] A hydrogenation lock, provided on the hydrogenation device;

[0016] A hydrogenation key, selectively inserted into the hydrogenation lock, for opening and closing the hydrogenation device;

[0017] Wherein, the charging key and the hydrogenation key are selectively and correspondingly inserted into the charging lock and the hydrogenation lock.

[0018] In some embodiments, the interlocking mechanism further includes:

[0019] A starting key;

[0020] An interlocking key box, provided on the hybrid locomotive;

[0021] Wherein, the starting key, the charging key and the hydrogenation key are correspondingly inserted into the interlocking key box, so that the power supply is electrically connected to one of the power battery protection device and the hydrogen storage protection device.

[0022] In some embodiments, the interlocking key box includes:

[0023] A power battery interlock, connected in series to the power battery protection device, and the charging key is inserted into the power battery interlock and switches between the charging start state and the charging off state;

[0024] A hydrogen storage interlock, connected in series to the hydrogen storage protection device, and the hydrogenation key is inserted into the hydrogen storage interlock and switches between the hydrogenation start state and the hydrogenation off state;

[0025] A starting lock, connected in series to the power supply, and the power battery interlock and the hydrogen storage interlock are connected in parallel and then connected in series with the starting lock, and the starting key is inserted into the starting lock.

[0026] In some embodiments, the hydrogen storage protection device further includes:

[0027] An exhaust component, electrically connected to the power supply, for exhausting hydrogen in the hydrogen storage room;

[0028] A ventilator, electrically connected to the power supply, for introducing air into the hydrogen storage room;

[0029] A hydrogenation alarm, electrically connected to the power supply, for giving a hydrogenation alarm.

[0030] In some embodiments, the power battery protection device further includes:

[0031] A charging alarm, electrically connected to the power supply, is used to issue a charging alarm.

[0032] According to the second aspect of the present invention, an operation safety protection method for a hybrid locomotive of an embodiment of the present invention is used to control the above-mentioned hybrid locomotive operation safety protection system. The hybrid locomotive operation safety protection method includes the following steps:

[0033] When the hybrid locomotive is charging, the interlocking mechanism controls the charging device to start, the hydrogenation device is locked and cannot start, and only the power battery protection device is electrically connected to the power supply, so that the charging device charges the power battery of the hybrid locomotive, and the temperature detection component of the power battery protection device detects the temperature of the power battery;

[0034] When the hybrid locomotive is hydrogenated, the interlocking mechanism controls the hydrogenation device to start, the charging device is locked and cannot start, and only the hydrogen storage protection device is electrically connected to the power supply, so that the hydrogenation device hydrogenates the hydrogen storage compartment of the hybrid locomotive, and the hydrogen concentration detector of the hydrogen storage protection device detects the hydrogen concentration in the hydrogen storage compartment.

[0035] In some embodiments, before the hybrid locomotive is charged or hydrogenated, the start key is inserted into the start lock and switched to the open position for power connection.

[0036] In some embodiments, before the charging device charges the power battery of the hybrid locomotive, the temperature detection component of the power battery protection device is electrically connected to the power supply for turning on the temperature detection component;

[0037] After the charging device finishes charging the power battery of the hybrid locomotive, the electrical connection between the temperature detection component of the power battery protection device and the power supply is interrupted for turning off the temperature detection component.

[0038] In some embodiments, if the hybrid locomotive needs to be charged, first switch the charging key inserted into the power battery interlock to the open position to turn on the power battery protection device, then take out the charging key from the power battery interlock, lock the start key in the start lock, lock the hydrogenation key in the hydrogen storage interlock, and then insert the charging key into the charging lock of the interlock key box and switch to the open position to make the charging device charge the power battery of the hybrid locomotive;

[0039] After the charging device finishes charging the power battery, first switch the charging key to the closed position and take out the charging key from the charging lock of the interlock key box, then insert the charging key into the power battery interlock and switch to the closed position to turn off the power battery protection device and unlock the interlock key box at the same time.

[0040] In some embodiments, the activation of the power battery protection device includes the following steps:

[0041] Obtain the actual temperature T of the power battery;

[0042] Compare the actual temperature T of the power battery, the first preset temperature T1 and the second preset temperature T2;

[0043] When T1 ≤ T ≤ T2, control the charging alarm to start and issue a stop charging alarm;

[0044] When T > T2, control the charging alarm to start and issue a fire extinguishing alarm.

[0045] In some embodiments, before the hydrogen refueling device refuels the hydrogen storage room of the hybrid locomotive, the hydrogen concentration detector of the hydrogen storage protection device is electrically connected to the power supply for turning on the hydrogen concentration detector;

[0046] After the hydrogen refueling device finishes refueling the hydrogen storage room of the hybrid locomotive, the electrical connection between the hydrogen concentration detector of the hydrogen storage protection device and the power supply is interrupted for turning off the hydrogen concentration detector.

[0047] In some embodiments, if the hybrid locomotive needs to be refueled with hydrogen, first switch the hydrogen refueling key plugged into the hydrogen storage interlock to the open position to turn on the hydrogen storage protection device, then take out the hydrogen refueling key from the hydrogen storage interlock, lock the start key in the start lock and the charging key in the charging lock, and then plug the hydrogen refueling key into the hydrogen refueling lock of the interlock key box and switch it to the open position to allow the hydrogen refueling device to refuel the hydrogen storage system in the hydrogen storage room of the hybrid locomotive;

[0048] After the hydrogen refueling device finishes refueling the hydrogen storage system in the hydrogen storage room, first switch the hydrogen refueling key to the closed position and take out the hydrogen refueling key from the hydrogen refueling lock of the interlock key box, then plug the hydrogen refueling key into the hydrogen storage interlock and switch it to the closed position to turn off the hydrogen storage protection device and unlock the interlock key box at the same time.

[0049] In some embodiments, the activation of the hydrogen storage protection device includes the following steps;

[0050] Obtain the actual hydrogen concentration C of the hydrogen storage room;

[0051] Compare the actual hydrogen concentration C of the hydrogen storage room, the first preset concentration C1 and the second preset concentration C2;

[0052] When C1 ≤ C, control the hydrogen refueling alarm to start and issue a stop hydrogen refueling alarm;

[0053] When C1 ≤ C ≤ C2, control the exhaust component to start to discharge the hydrogen in the hydrogen storage room;

[0054] And when C > C2, control the ventilator to start to replace the hydrogen in the hydrogen storage room with external air;

[0055] When C1 > C, control the hydrogen refueling alarm to close.

[0056] One embodiment of the present invention has the following advantages or beneficial effects:

[0057] The hybrid locomotive safety protection system provided by the embodiment of the present invention can charge the power battery of the hybrid locomotive by using a charging device to complete the charging process of the hybrid locomotive. During this process, the temperature detector of the power battery protection device is used to detect the power battery to realize the temperature monitoring of the power battery, so as to ensure the charging safety of the hybrid locomotive. The hydrogen addition device can add hydrogen to the hydrogen storage room of the hybrid locomotive to complete the hydrogen addition process of the hybrid locomotive. During this process, the hydrogen concentration detector of the hydrogen storage protection device is used to detect the hydrogen concentration in the hydrogen storage room to realize the monitoring of the hydrogen concentration in the hydrogen storage room, so as to ensure the hydrogen addition safety of the hybrid locomotive. The interlock mechanism can control the charging device and the hydrogen addition device to start alternately. The interlock mechanism acts as a switch. The interlock mechanism is used to interlock the hydrogen addition and charging of the hybrid locomotive. By adopting a mechanical anti-fooling setting, the hydrogen addition process and the charging process can only be carried out singly at the same time, which plays a role in protecting the safety of the hybrid locomotive. Compared with the existing manual control, it saves time and effort and has high reliability.

[0058] At the same time, even when the hybrid mechanism is in a stopped state during charging or hydrogen addition, the power supply can be electrically connected to the power battery protection device and the hydrogen storage protection device respectively, so that the hybrid locomotive is monitored by the power battery protection device during charging, and the hybrid locomotive is monitored by the hydrogen storage protection device during hydrogen addition, ensuring that the safety during the whole process is in a fully controlled state. A separately provided power supply is used to supply power to the power battery protection device or the hydrogen storage protection device. Before hydrogen addition or charging, it is restricted by the interlock mechanism and will forcibly start the power battery protection device or the hydrogen storage protection device to avoid risks caused by human negligence.

[0059] The hybrid locomotive safety protection method provided by the embodiment of the present invention, according to the different fuels added to the hybrid locomotive, uses the interlock mechanism to alternately start the charging device and the hydrogen addition device, and controls the corresponding start of the two different monitoring systems of the power battery protection device and the hydrogen storage protection device. When the hybrid locomotive adds hydrogen, the hydrogen concentration detector of the hydrogen storage protection device detects the hydrogen concentration in the hydrogen storage room to ensure safety during the hydrogen addition process. During the charging process of the hybrid locomotive, the temperature detector of the power battery protection device is used to monitor the temperature of the power battery to ensure safety during the charging process. It is equivalent to that the interlock mechanism can interlock the hydrogen addition and charging processes of the hybrid locomotive, and forces only one operation to be carried out at the same time to ensure safety. Description of the Drawings

[0060] To better understand the present disclosure, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of the present disclosure. Additionally, related elements or components may have different arrangements as known in the art. Moreover, in the drawings, the same reference numerals denote the same or similar components in each drawing. By describing in detail its exemplary embodiments with reference to the drawings, the above and other features and advantages of the present invention will become more apparent.

[0061] Wherein:

[0062] Figure 1 The figure shows a schematic diagram of the principle of the hybrid locomotive safety protection system according to an embodiment of the present invention;

[0063] Figure 2 The figure shows a schematic diagram of a partial circuit of the interlocking mechanism in the hybrid locomotive safety protection system according to an embodiment of the present invention;

[0064] Figure 3 The figure shows a flowchart of the hybrid locomotive safety protection method according to an embodiment of the present invention.

[0065] Wherein, the reference numerals are explained as follows:

[0066] 100, Machinery room; 200, Electrical room; 300, Hydrogen storage room;

[0067] 1, Power supply; 2, Charging device; 3, Hydrogen filling device; 4, Power battery protection device; 5, Hydrogen storage protection device; 6, Interlocking mechanism; 7, Acousto-optic alarm device; 8, Control host;

[0068] 61, Charging lock; 62, Charging key; 63, Hydrogen filling lock; 64, Hydrogen filling key; 65, Starting key; 66, Interlocking key box; 661, Starting lock; 662, Power battery interlock; 663, Hydrogen storage interlock. Detailed embodiments

[0069] Next, the technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the protection scope of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the protection scope of the present disclosure.

[0070] In the description of the present disclosure, unless otherwise clearly specified or limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more; the term "and / or" includes any combination and all combinations of one or more of the associated listed items. In particular, referring to "the / a" object is also intended to mean one of the possible plurality of such objects.

[0071] Unless otherwise specified or stated, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0072] Furthermore, in the description of the present disclosure, it should be understood that the orientation terms such as "upper", "lower", "inner", and "outer" described in the exemplary embodiments of the present disclosure are described from the angles shown in the drawings and should not be construed as limiting the exemplary embodiments of the present disclosure. It should also be understood that in the context, when it is mentioned that an element or feature is connected "on", "under", or "inside", "outside" another element (one or more), it can not only be directly connected "on", "under", or "inside", "outside" another (one or more) element, but also be indirectly connected "on", "under", or "inside", "outside" another (one or more) element through an intermediate element.

[0073] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0074] This embodiment provides a hybrid locomotive safety protection system, which is applicable to the technical field of hybrid locomotives. The hybrid locomotive specifically refers to a hybrid locomotive, especially a hydrogen fuel hybrid locomotive. The energy of the hybrid locomotive is hydrogen, or electric energy, or hydrogen and electric energy.

[0075] Such as Figure 1As shown in the figure, the hybrid locomotive safety protection system includes a power supply 1, a charging device 2, a hydrogen addition device 3, a power battery protection device 4, a hydrogen storage protection device 5, and an interlock mechanism 6. The charging device 2 is used to charge the power battery of the hybrid locomotive. The hydrogen addition device 3 is used to add hydrogen to the hydrogen storage system in the hydrogen storage room 300 of the hybrid locomotive. The power battery protection device 4 includes a temperature detection component, specifically, the temperature detection component is an infrared temperature sensor, and the temperature detection component is used to detect the power battery. The hydrogen storage protection device 5 includes a hydrogen concentration detector, and the hydrogen concentration detector is used to detect the hydrogen concentration in the hydrogen storage room 300. The interlock mechanism 6 is configured to control the charging device 2 and the hydrogen addition device 3 to start alternatively, and enable the power supply 1 to be selectively electrically connected to the power battery protection device 4 and the hydrogen storage protection device 5 respectively.

[0076] For the hybrid locomotive safety protection system provided in this embodiment, the charging device 2 can be used to charge the power battery of the hybrid locomotive to complete the charging process of the hybrid locomotive. During this process, the temperature detection component of the power battery protection device 4 is used to detect the power battery, realizing the temperature monitoring of the power battery to ensure the charging safety of the hybrid locomotive. The hydrogen addition device 3 can be used to add hydrogen to the hydrogen storage system in the hydrogen storage room 300 of the hybrid locomotive to complete the hydrogen addition process of the hybrid locomotive. During this process, the hydrogen concentration detector of the hydrogen storage protection device 5 is used to detect the hydrogen concentration in the hydrogen storage room 300, realizing the monitoring of the hydrogen concentration in the hydrogen storage room 300 to ensure the hydrogen addition safety of the hybrid locomotive. The interlock mechanism 6 can control the charging device 2 and the hydrogen addition device 3 to start alternatively. The interlock mechanism 6 plays the role of a switch. The interlock mechanism 6 is used to interlock the hydrogen addition and charging of the hybrid locomotive, adopting a mechanical anti-fooling setting, so that the hydrogen addition process and the charging process can only be carried out singly at the same time, playing a role in protecting the safety of the hybrid locomotive. Compared with the existing manual control, it saves time and effort and has high reliability.

[0077] At the same time, even when the hybrid mechanism is in a stopped state during charging or hydrogen addition, the power supply 1 can be selectively electrically connected to the power battery protection device 4 and the hydrogen storage protection device 5 respectively, so that the hybrid locomotive is monitored by the power battery protection device 4 during charging and the hybrid locomotive is monitored by the hydrogen storage protection device 5 during hydrogen addition, ensuring that the safety during the whole process is in a fully controlled state. The separately provided power supply 1 is used to supply power to the power battery protection device 4 or the hydrogen storage protection device 5. Before hydrogen addition or charging, it is restricted by the interlock mechanism 6, which will forcibly start the power battery protection device 4 or the hydrogen storage protection device 5 to avoid risks caused by human negligence.

[0078] In one embodiment, as Figure 1As shown, the interlock mechanism 6 includes a charging lock 61, a charging key 62, a hydrogenation lock 63 and a hydrogenation key 64. The charging lock 61 is arranged on the charging device 2, and the charging key 62 is selectively inserted into the charging lock 61 for opening and closing the charging device 2. The hydrogenation lock 63 is arranged on the hydrogenation device 3, and the hydrogenation key 64 is selectively inserted into the hydrogenation lock 63 for opening and closing the hydrogenation device 3.

[0079] It should be particularly noted that a machinery compartment 100, an electrical compartment 200 and a hydrogen storage compartment 300 are provided in the hybrid locomotive. A power supply 1 and a part of the interlock mechanism 6 are arranged in the machinery compartment 100, a power battery protection device 4 is arranged in the electrical compartment 200, and a hydrogen storage protection device 5 is arranged in the hydrogen storage compartment 300. A charging device 2 and a hydrogenation device 3 are arranged outside the hybrid locomotive. The charging device 2 includes a charging box, and a charging lock 61 is arranged at the charging port of the charging box. The charging lock 61 is adapted to the charging key 62 for opening and closing the charging device 2. The hydrogenation device 3 includes a hydrogenation box, and a hydrogenation lock 63 is arranged at the charging port of the hydrogenation box. The hydrogenation lock 63 is adapted to the hydrogenation key 64 for opening and closing the hydrogenation device 3.

[0080] It should be particularly noted that the charging lock 61 and the hydrogenation lock 63 are specifically cam locks. Both the charging lock 61 and the hydrogenation lock 63 have two working positions: a locked position and an open position. In the locked position, the lock head is locked by the lock body and cannot be taken out, and the corresponding key can be pulled out from the lock body. In the open position, the lock head can be taken out from the lock body, and the corresponding key is locked and cannot be rotated or pulled out.

[0081] Among them, the charging key 62 and the hydrogenation key 64 are selectively inserted into the charging lock 61 and the hydrogenation lock 63 respectively.

[0082] Specifically, when the charging key 62 is inserted into the charging lock 61, the hydrogenation key 64 is not inserted into the hydrogenation lock 63, so that the hybrid locomotive can only be charged by the charging device 2, avoiding safety accidents caused by hydrogenation during the charging process; when the hydrogenation key 64 is inserted into the hydrogenation lock 63, the charging key 62 is not inserted into the charging lock 61, so that the hybrid locomotive can only be hydrogenated by the hydrogenation device 3, avoiding safety accidents caused by charging during the hydrogenation process.

[0083] In one embodiment, the interlock mechanism 6 further includes a start key 65 and an interlock key box 66. The interlock key box 66 is arranged on the body of the hybrid locomotive. Among them, the start key 65, the charging key 62 and the hydrogenation key 64 are correspondingly inserted into the interlock key box 66, so that the power supply 1 is electrically connected to one of the power battery protection device 4 and the hydrogen storage protection device 5.

[0084] Among them, the start key 65 is correspondingly plugged into the interlock key box 66 to conduct the power supply 1, so as to provide the required electric energy for the power battery protection device 4 or the hydrogen storage protection device 5. The charging key 62 is correspondingly plugged into the interlock key box 66, so that the power supply 1 is electrically connected to the power battery protection device 4, and the temperature detection component of the power battery protection device 4 can detect the temperature of the power battery. The hydrogen addition key 64 is correspondingly plugged into the interlock key box 66, so that the power supply 1 is electrically connected to the hydrogen storage protection device 5, and the hydrogen concentration detector of the hydrogen storage protection device 5 can detect the hydrogen concentration in the hydrogen storage room 300.

[0085] It can be understood that the start key 65 specifically refers to the locomotive start key. The driver inserts the start key 65 into the start lock 661 arranged on the console and rotates it to the working position, and then the control end of the hybrid locomotive is activated, and then the hybrid locomotive can be started.

[0086] It can be understood that the interlock key box 66, the start key 65, the charging key 62 and the hydrogen addition key 64 are part of the interlock mechanism 6, and the charging lock 61 and the hydrogen addition lock 63 are the other part of the interlock mechanism 6.

[0087] In one embodiment, as Figure 1 - Figure 2 shown, the interlock key box 66 includes a power battery interlock 662, a hydrogen storage interlock 663 and a start lock 661. The power battery interlock 662 is connected in series with the power battery protection device 4, and the charging key 62 is plugged into the power battery interlock 662 and switches between the charging start state and the charging off state. The hydrogen storage interlock 663 is connected in series with the hydrogen storage protection device 5, and the hydrogen addition key 64 is plugged into the hydrogen storage interlock 663 and switches between the hydrogen addition start state and the hydrogen addition off state. The start lock 661 is connected in series with the power supply 1. The power battery interlock 662 and the hydrogen storage interlock 663 are connected in parallel and then connected in series with the start lock 661, and the start key 65 is plugged into the start lock 661.

[0088] It can be understood that the circuit in the interlock key box 66 is a series-parallel circuit. After the power supply 1 and the start lock 661 are connected in series, they are divided into three parallel branches. The first parallel branch is that the power battery interlock 662 is connected in series with the power battery protection device 4, the second parallel branch is that the hydrogen storage interlock 663 is connected in series with the hydrogen storage protection device 5, and the third branch is the control host 8.

[0089] When the start key 65 is plugged into the start lock 661 and switched to the open position, it is equivalent to the start lock 661 being closed to connect the power supply 1, and the circuit in the entire interlock key box 66 is in the on state. The charging key 62 is plugged into the power battery interlock 662 and switches between the charging start state and the charging off state.

[0090] It should be specifically noted that when the start key 65, the charging key 62, and the hydrogen refueling key 64 are inserted into the corresponding locks, they are in the locked position. After the start key 65, the charging key 62, and the hydrogen refueling key 64 are rotated 90°, they are in the open position. Therefore, after the charging key 62 is inserted into the power battery interlock 662, by rotating the charging key 62 by 90°, the switching between the charging start state and the charging off state is realized; after the hydrogen refueling key 64 is inserted into the hydrogen storage interlock 663, by rotating the hydrogen refueling key 64 by 90°, the switching between the hydrogen refueling start state and the hydrogen refueling off state is realized and achieved.

[0091] It should be specifically noted that the power battery interlock 662, the hydrogen storage interlock 663, and the start lock 661 of the interlock key box 66 are mechanically interlocked, and at the same time, each lock can transmit a feedback signal to the control host 8.

[0092] It should be specifically noted that it is also possible that the start lock 661 is not mechanically interlocked with the power battery interlock 662 and the hydrogen storage interlock 663, but the start lock 661 is only used as the mechanical lock of the box door of the interlock key box 66 and the power switch of the entire circuit. Only after the start lock 661 is opened can the box door of the interlock key box 66 be opened, and only then can the charging key 62 or the hydrogen refueling key 64 be taken out for subsequent operations.

[0093] In one embodiment, the hydrogen storage protection device 5 further includes an exhaust component, a ventilator, and a hydrogen refueling alarm. The exhaust component is electrically connected to the power supply 1 and is used to discharge the hydrogen in the hydrogen storage room 300; the ventilator is electrically connected to the power supply 1 and is used to introduce air into the hydrogen storage room 300, and the hydrogen refueling alarm is electrically connected to the power supply 1 and is used to issue a hydrogen refueling alarm.

[0094] The exhaust component, the ventilator, and the hydrogen refueling alarm are electrically connected to the power supply 1 to provide electrical energy for these components. The discharge component can be used to discharge the hydrogen in the hydrogen storage room 300 to realize the function of emergency evacuation of the hydrogen storage room 300. The ventilator is used to introduce air into the hydrogen storage room 300 to realize the function of replacing the external air with the air in the hydrogen storage room 300. The hydrogen refueling alarm is used to issue a hydrogen refueling alarm to prompt the operator to check and repair.

[0095] It should be specifically noted that the discharge component includes an exhaust window and an electric strut. The exhaust window is arranged at the top of the hydrogen storage room 300. The control host 8 controls the power supply 1 to supply power to the discharge component. The electric strut opens the exhaust window after being powered on, so that the escaped hydrogen in the hydrogen storage room 300 can escape from here to the outside atmosphere of the vehicle.

[0096] It should be specifically noted that the ventilator is arranged at the top of the hydrogen storage room 300. The control host 8 controls the power supply 1 to supply power to the ventilator. The ventilator is essentially a forced ventilation device, and the ventilator forcibly replaces all the air in the hydrogen storage room 300 to achieve the purpose of evacuation.

[0097] In one embodiment, the power battery protection device 4 further includes a charging alarm, which is electrically connected to the power supply 1 and used to issue a charging alarm. The charging alarm is used to prompt the operator to check and repair.

[0098] It should be particularly noted that, as Figure 1 shown, the hydrogenation alarm and the charging alarm can be collectively referred to as the sound and light alarm device 7. The sound and light alarm device 7 is arranged outside the vehicle body of the hybrid locomotive and is used to prompt the operator to perform emergency treatment. By installing the sound and light alarm device 7 outside the vehicle, during hydrogenation or charging, the operator can directly receive relevant warnings, avoiding the risk caused by untimely information transmission by the in-vehicle monitoring personnel.

[0099] This embodiment also provides a safety protection method for a hybrid locomotive, which is used to control the above-mentioned safety protection system of the hybrid locomotive. As Figure 3 shown, the safety protection method for the hybrid locomotive includes the following steps:

[0100] When the hybrid locomotive is charging, the interlocking mechanism 6 controls the charging device 2 to start and the hydrogenation device 3 not to start, and only the power battery protection device 4 is electrically connected to the power supply 1, so that the charging device 2 charges the power battery of the hybrid locomotive, and the temperature detection component of the power battery protection device 4 detects the temperature of the power battery.

[0101] When the hybrid locomotive is hydrogenated, the interlocking mechanism 6 controls the hydrogenation device 3 to start and the charging device 2 not to start, and only the hydrogen storage protection device 5 is electrically connected to the power supply 1, so that the hydrogenation device 3 hydrogenates the hydrogen storage compartment 300 of the hybrid locomotive, and the hydrogen concentration detector of the hydrogen storage protection device 5 detects the hydrogen concentration in the hydrogen storage compartment 300.

[0102] The safety protection method for the hybrid locomotive provided in this embodiment, according to the different fuels added to the hybrid locomotive, uses the interlocking mechanism 6 to selectively start the charging device 2 and the hydrogenation device 3, and controls the corresponding start of the two different monitoring systems of the power battery protection device 4 and the hydrogen storage protection device 5. During the hydrogenation of the hybrid locomotive, the hydrogen concentration detector of the hydrogen storage protection device 5 detects the hydrogen concentration in the hydrogen storage compartment 300 to ensure safety during the hydrogenation process. During the charging process of the hybrid locomotive, the temperature detection component of the power battery protection device 4 monitors the temperature of the power battery to ensure safety during the charging process. It is equivalent to that the interlocking mechanism 6 can interlock the hydrogenation and charging processes of the hybrid locomotive, forcing only one operation to be performed at the same time to ensure safety.

[0103] In one embodiment, before the hybrid locomotive is charged or hydrogenated, the start key 65 of the interlocking mechanism 6 is inserted into the start lock 661 and switched to the open position for connecting the power supply 1.

[0104] Specifically, when the hybrid locomotive needs to be charged or refueled with hydrogen, the operator inserts the start key 65 into the start lock 661 of the interlock key box 66 and rotates it 90°, which turns on the power supply 1, and the internal circuit of the entire interlock key box 66 is in the on state. A separate power supply 1 is used for power supply. Due to the interlock before hydrogen refueling or charging, the power battery protection device 4 or the hydrogen storage protection device 5 will be forcibly started to avoid risks caused by human negligence.

[0105] It can be understood that a mechanical interlock method is used to interlock the start, charging, and hydrogen refueling operations of the hybrid locomotive to avoid the danger of starting two or three of them simultaneously.

[0106] In one embodiment, before the charging device 2 charges the power battery of the hybrid locomotive, the temperature detection component of the power battery protection device 4 is electrically connected to the power supply 1 for turning on the temperature detection component. After the charging device 2 finishes charging the power battery of the hybrid locomotive, the electrical connection between the temperature detection component of the power battery protection device 4 and the power supply 1 is interrupted for turning off the temperature detection component.

[0107] In other words, before the charging device 2 is turned on, the temperature detection component of the battery protection device has been turned on and is ready to detect the temperature of the power battery; after the charging device 2 is turned off, the temperature detection component of the battery protection device is turned off only after detecting the temperature of the fully charged power battery. That is, the working duration of the temperature detection component of the battery protection device 4 is longer than the working duration of the charging device 2 to ensure that the temperature detection component can detect the temperature of the power battery throughout the charging process and guarantee safety during the charging process.

[0108] In one embodiment, if the hybrid locomotive needs to be charged, first switch the charging key 62 plugged into the power battery interlock 662 to the open position to turn on the power battery protection device 4. Then, remove the charging key 62 from the power battery interlock 662, lock the start key 65 in the start lock 661, and lock the hydrogen refueling key 64 in the hydrogen storage interlock 663, that is, the start key 65 and the hydrogen refueling key 64 cannot be pulled out. At this time, the power battery protection device 4 starts.

[0109] Then, plug the charging key 62 into the charging lock 61 of the interlock key box 66 and switch it to the open position, that is, rotate the charging key 62 90° after plugging it into the charging lock 61, so that the charging box of the charging device 2 charges the power battery of the hybrid locomotive. At this time, the charging key 62 is locked in the charging lock 61 and cannot be pulled out. During the charging process of the charging box charging the power battery of the hybrid locomotive, the temperature detection component continuously detects the temperature of the power battery;

[0110] After the charging device 2 finishes charging the power battery, first switch the charging key 62 to the off position and take out the charging key 62 from the charging lock 61 of the interlock key box 66 to unlock the interlock key box 66. Then insert the charging key 62 into the power battery interlock 662 and switch it to the off position to turn off the power battery protection device 4.

[0111] In one embodiment, the activation of the power battery protection device 4 includes the following steps:

[0112] Obtain the actual temperature T of the power battery;

[0113] Compare the actual temperature T of the power battery, the first preset temperature T1, and the second preset temperature T2;

[0114] When T1 ≤ T ≤ T2, control the charging alarm to start and issue a stop charging alarm;

[0115] When T > T2, control the charging alarm to start and issue a fire extinguishing alarm.

[0116] Among them, the actual temperature T of the power battery is obtained by detecting with a temperature detection component. The temperature detection component transmits the detected temperature signal to the control host 8, and the control host 8 controls the charging alarm to work. When T1 ≤ T ≤ T2, it means that the actual temperature T of the power battery is between the first preset temperature T1 and the second preset temperature T2, in an unsafe state. At this time, control the charging alarm to start and issue a stop charging alarm; when T > T2, it means that the actual temperature T of the power battery exceeds the second preset temperature T2, in a seriously unsafe state and may catch fire due to overheating. At this time, control the charging alarm to start and issue a fire extinguishing alarm.

[0117] In one embodiment, before the hydrogen refueling device 3 refuels the hydrogen storage room 300 of the hybrid locomotive, the hydrogen concentration detector of the hydrogen storage protection device 5 is electrically connected to the power supply 1 to turn on the hydrogen concentration detector; after the hydrogen refueling device 3 finishes refueling the hydrogen storage room 300 of the hybrid locomotive, the electrical connection between the hydrogen concentration detector of the hydrogen storage protection device 5 and the power supply 1 is interrupted to turn off the hydrogen concentration detector.

[0118] In other words, before the hydrogen refueling device 3 is turned on, the hydrogen concentration detector of the hydrogen storage protection device 5 has been turned on, ready to detect the hydrogen concentration in the hydrogen storage room 300; after the hydrogen refueling device 3 is turned off, the hydrogen concentration detector of the hydrogen storage protection device 5 is turned off to detect the hydrogen concentration in the hydrogen storage room 300 that has been refueled. That is, the working duration of the hydrogen concentration detector of the hydrogen storage protection device 5 is longer than the working duration of the hydrogen refueling device 3 to ensure that during the entire hydrogen refueling process, the hydrogen concentration detector can detect the hydrogen concentration in the hydrogen storage room 300 and ensure safety during the hydrogen refueling process.

[0119] In one embodiment, if the hybrid locomotive needs to be hydrogenated, first insert the hydrogenation key 64 into the hydrogen storage interlock 663 and switch it to the open position to turn on the hydrogen storage protection device 5. After that, take out the hydrogenation key 64 from the hydrogen storage interlock 663, lock the start key 65 in the start lock 661, and lock the charging key 62 in the power battery interlock 662. Then insert the hydrogenation key 64 into the hydrogenation lock 63 of the interlock key box 66 and switch it to the open position to allow the hydrogenation device 3 to hydrogenate the hydrogen storage compartment 300 of the hybrid locomotive. After the hydrogenation device 3 finishes hydrogenating the hydrogen storage compartment 300, first switch the hydrogenation key 64 to the closed position and take out the hydrogenation key 64 from the hydrogenation lock 63 of the interlock key box 66 to unlock the interlock key box 66. Then insert the hydrogenation key 64 into the hydrogen storage interlock 663 and switch it to the closed position to turn off the hydrogen storage protection device 5.

[0120] In one embodiment, the startup of the hydrogen storage protection device 5 includes the following steps;

[0121] Obtain the actual hydrogen concentration C of the hydrogen storage compartment 300;

[0122] Compare the actual hydrogen concentration C of the hydrogen storage compartment 300, the first preset concentration C1, and the second preset concentration C2;

[0123] When C1 ≤ C, control the hydrogenation alarm to start and issue a stop hydrogenation alarm;

[0124] When C1 ≤ C ≤ C2, control the exhaust component to start to discharge the hydrogen in the hydrogen storage compartment 300;

[0125] And when C > C2, control the ventilator to start to displace the hydrogen in the hydrogen storage compartment 300 with external air.

[0126] When C1 > C, control the hydrogenation alarm to stop;

[0127] Among them, the actual hydrogen concentration C of the hydrogen storage compartment 300 is obtained by detecting with a hydrogen concentration detector. The hydrogen concentration detector transmits the detected hydrogen concentration signal to the control host 8, and the control host 8 controls the operation of each component in the hydrogen storage protection device 5.

[0128] When C1 ≤ C ≤ C2, it means that the actual hydrogen concentration C of the hydrogen storage compartment 300 is between the first preset concentration C1 and the second preset concentration C2, in an unsafe state. At this time, the control host 8 controls the power supply 1 to supply power to the exhaust component. After the electric strut is powered on, it opens the exhaust window, so that the escaped hydrogen in the hydrogen storage compartment 300 can escape to the outside atmosphere from here. At the same time, the control host 8 controls the hydrogenation alarm to start and issue a stop hydrogenation alarm.

[0129] When C > C2, it means that the actual hydrogen concentration C in the hydrogen storage room 300 exceeds the second preset concentration C2, and it is in a seriously unsafe state. At this time, the control host 8 controls the power supply 1 to supply power to the ventilator. The ventilator is essentially a forced ventilation device, and the ventilator forcibly replaces all the air in the hydrogen storage room 300 to achieve the purpose of evacuation.

[0130] When C1 > C, it means that under the action of hydrogen discharge by the ventilator or the discharge component, the actual hydrogen concentration C in the hydrogen storage room 300 gradually drops to a safe state, and the control charging alarm is turned off.

[0131] It should be particularly noted that the first preset concentration C1 can specifically be 1%, and the second preset concentration C2 can specifically be 3%.

[0132] It should be particularly noted that the safe state is not only an instantaneous state, but a continuous state. Only when the actual hydrogen concentration C in the hydrogen storage room 300 is less than the first preset concentration C1 and lasts for a preset time t is it considered a safe state. Among them, t can be 300s.

[0133] It should be understood that the present invention does not limit its application to the detailed structure and arrangement of the components set forth in this specification. The present invention is capable of having other embodiments and can be implemented and executed in various ways. The foregoing variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined in this specification extends to all alternative combinations of two or more separate features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

[0134] After considering the specification and practicing the inventive concept disclosed herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and the example embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

[0135] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The protection scope of the present disclosure is only limited by the appended claims.

Claims

1. A safety protection method for a hybrid locomotive, characterized in that, For controlling the safety protection system of a hybrid locomotive, the safety protection method for the hybrid locomotive includes the following steps: When the hybrid locomotive is charging, the interlock mechanism (6) controls the charging device (2) to start and the hydrogenation device (3) not to start, and only the power battery protection device (4) is electrically connected to the power supply (1), so that the charging device (2) charges the power battery of the hybrid locomotive, and the temperature detection component of the power battery protection device (4) detects the temperature of the power battery; When the hybrid locomotive is being hydrogenated, the interlock mechanism (6) controls the hydrogenation device (3) to start and the charging device (2) not to start, and only the hydrogen storage protection device (5) is electrically connected to the power supply (1), so that the hydrogenation device (3) hydrogenates the hydrogen storage compartment (300) of the hybrid locomotive, and the hydrogen concentration detector of the hydrogen storage protection device (5) detects the hydrogen concentration in the hydrogen storage compartment (300); The safety protection system of the hybrid locomotive includes: Power supply (1); Charging device (2), used for charging the power battery of the hybrid locomotive; Hydrogenation device (3), used for hydrogenating the hydrogen storage system in the hydrogen storage compartment (300) of the hybrid locomotive; Power battery protection device (4), including a temperature detection component, and the temperature detection component is used for detecting the power battery; Hydrogen storage protection device (5), including a hydrogen concentration detector, and the hydrogen concentration detector is used for detecting the hydrogen concentration in the hydrogen storage compartment (300); Interlock mechanism (6), the interlock mechanism (6) is configured to control the charging device (2) and the hydrogenation device (3) to start alternately, and enable the power supply (1) to be alternately electrically connected to the power battery protection device (4) and the hydrogen storage protection device (5) respectively.

2. The safety protection method for a hybrid locomotive according to claim 1, wherein The interlock mechanism (6) includes: Charging lock (61), arranged on the charging device (2); Charging key (62), selectively inserted into the charging lock (61), used for opening and closing the charging device (2); Hydrogenation lock (63), arranged on the hydrogenation device (3); Hydrogenation key (64), selectively inserted into the hydrogenation lock (63), used for opening and closing the hydrogenation device (3); Wherein, the charging key (62) and the hydrogenation key (64) are selectively inserted into the charging lock (61) and the hydrogenation lock (63) respectively.

3. The hybrid locomotive safety protection method according to claim 2, characterized in that, The interlock mechanism (6) further includes: Start key (65); Interlock key box (66), arranged on the hybrid locomotive; Wherein, the start key (65), the charging key (62) and the hydrogenation key (64) are correspondingly inserted into the interlock key box (66), so that the power supply (1) is electrically connected to one of the power battery protection device (4) and the hydrogen storage protection device (5).

4. The hybrid locomotive safety protection method according to claim 3, characterized in that, The interlock key box (66) includes: Power battery interlock (662), connected in series with the power battery protection device (4), and the charging key (62) is inserted into the power battery interlock (662) and switches between the charging start state and the charging off state; Hydrogen storage interlock (663), connected in series with the hydrogen storage protection device (5), and the hydrogenation key (64) is inserted into the hydrogen storage interlock (663) and switches between the hydrogenation start state and the hydrogenation off state; The start lock (661) is connected in series to the power supply (1). The power battery interlock (662) and the hydrogen storage interlock (663) are connected in parallel and then connected in series with the start lock (661). The start key (65) is inserted into the start lock (661).

5. The safety protection method for a hybrid locomotive according to claim 1, wherein, The hydrogen storage protection device (5) further includes: An exhaust component, electrically connected to the power supply (1), for exhausting hydrogen in the hydrogen storage compartment (300); A ventilator, electrically connected to the power supply (1), for introducing air into the hydrogen storage compartment (300); A hydrogenation alarm, electrically connected to the power supply (1), for giving a hydrogenation alarm.

6. The safety protection method for a hybrid locomotive according to claim 5, wherein The power battery protection device (4) further includes: A charging alarm, electrically connected to the power supply (1), for giving a charging alarm.

7. The safety protection method for a hybrid locomotive according to claim 1, characterized in that, Before the hybrid locomotive is charged or hydrogenated, the start key (65) of the interlock mechanism (6) is inserted into the start lock (661) and switched to the open position to connect the power supply (1).

8. The hybrid locomotive safety protection method according to claim 7, characterized in that, Before the charging device (2) charges the power battery of the hybrid locomotive, the temperature detection component of the power battery protection device (4) is electrically connected to the power supply (1) to turn on the temperature detection component; After the charging device (2) finishes charging the power battery of the hybrid locomotive, the temperature detection component of the power battery protection device (4) is disconnected from the power supply (1) to turn off the temperature detection component.

9. The hybrid locomotive safety protection method according to claim 8, characterized in that, If the hybrid locomotive needs to be charged, first switch the charging key (62) inserted into the power battery interlock (662) to the open position to turn on the power battery protection device (4). Then, take out the charging key (62) from the power battery interlock (662) to lock the start key (65) in the start lock (661) and lock the hydrogenation key (64) in the hydrogen storage interlock (663). Then, insert the charging key (62) into the charging lock (61) of the interlock key box (66) and switch it to the open position to enable the charging device (2) to charge the power battery of the hybrid locomotive; After the charging device (2) finishes charging the power battery, first switch the charging key (62) to the closed position and take out the charging key (62) from the charging lock (61) of the interlock key box (66). Then, insert the charging key (62) into the power battery interlock (662) and switch it to the closed position to turn off the power battery protection device (4) and unlock the interlock key box (66) at the same time.

10. The hybrid locomotive safety protection method according to claim 9, wherein The activation of the power battery protection device (4) includes the following steps: Obtain the actual temperature T of the power battery; Compare the actual temperature T of the power battery, the first preset temperature T1, and the second preset temperature T2; When T1 ≤ T ≤ T2, control the charging alarm to start and give a stop charging alarm; When T > T2, control the charging alarm to start and give a fire extinguishing alarm.

11. The hybrid locomotive safety protection method according to claim 7, characterized in that, Before the hydrogenation device (3) hydrogenates the hydrogen storage compartment (300) of the hybrid locomotive, the hydrogen concentration detector of the hydrogen storage protection device (5) is electrically connected to the power supply (1) to turn on the hydrogen concentration detector; After the hydrogen storage system of the hybrid locomotive is hydrogenated by the hydrogenation device (3), the hydrogen concentration detector of the hydrogen storage protection device (5) is electrically disconnected from the power supply (1) to turn off the hydrogen concentration detector.

12. The safety protection method for a hybrid locomotive according to claim 11, wherein if the hybrid locomotive needs to be hydrogenated, first switch the hydrogenation key (64) plugged into the hydrogen storage interlock (663) to the open position to turn on the hydrogen storage protection device (5). Then, take out the hydrogenation key (64) from the hydrogen storage interlock (663) to lock the start key (65) in the start lock (661) and the charging key (62) in the power battery interlock (662). Then, plug the hydrogenation key (64) into the hydrogenation lock (63) of the interlock key box (66) and switch it to the open position to allow the hydrogenation device (3) to hydrogenate the hydrogen storage compartment (300) of the hybrid locomotive; After the hydrogenation device (3) finishes hydrogenating the hydrogen storage system in the hydrogen storage compartment (300), first switch the hydrogenation key (64) to the closed position and take out the hydrogenation key (64) from the hydrogenation lock (63) of the interlock key box (66). Then, plug the hydrogenation key (64) into the hydrogen storage interlock (663) and switch it to the closed position to turn off the hydrogen storage protection device (5), and at the same time unlock the interlock key box (66).

13. The hybrid locomotive safety protection method according to claim 12, characterized in that, The activation of the hydrogen storage protection device (5) includes the following steps; Obtain the actual hydrogen concentration C of the hydrogen storage compartment (300); Compare the actual hydrogen concentration C of the hydrogen storage compartment (300), the first preset concentration C1, and the second preset concentration C2; When C1 ≤ C, control the hydrogenation alarm to start and issue a stop hydrogenation alarm; When C1 ≤ C ≤ C2, control the exhaust component to start to discharge the hydrogen in the hydrogen storage compartment (300); And when C > C2, control the ventilator to start to replace the hydrogen in the hydrogen storage compartment (300) with external air; When C1 > C, control the hydrogenation alarm to close.

Images