High-power hydrogen energy mobile charging device

Abstract

The application provides a high-power hydrogen energy mobile charging device, which comprises a hydrogen storage system configured to store and provide hydrogen; a fuel cell system configured to receive hydrogen from the hydrogen storage system and generate power by using the hydrogen; a charging system configured to receive, control and distribute the power generated by the fuel cell system; and a terminal device configured to receive power from the charging system and charge external power-consuming devices by using the received power, wherein at least part of the power from the fuel cell system is used to drive the movement of the mobile charging device. The mobile charging device can solve many problems existing in conventional diesel and energy storage battery mobile charging devices, meet the demand of high-power power-consuming devices and large-capacity charging in some application occasions, and solve the problems of multi-system integrated control, safety monitoring and management.

Description

Technical Field

[0001] This application relates to a mobile charging device, and more particularly to a high-power mobile charging device that uses hydrogen energy as a power source. Background Technology

[0002] With the widespread application of electrification in vehicles, ships, and construction machinery, the demand for high-power charging is increasing. In some applications where grid expansion and the construction of high-power charging stations are difficult, the problem of charging electric equipment is becoming increasingly prominent.

[0003] To date, the inventors have conducted research on the current state of mobile charging equipment (such as charging vehicles) in the market and subsequently found that diesel-powered mobile charging vehicles suffer from problems such as low charging power (300-500kW power generation), low power generation (1000-1500kWh per charge), slow energy replenishment efficiency, noise and emission pollution, and narrow coverage. Lithium-ion battery mobile charging vehicles, on the other hand, suffer from problems such as low charging power (300-500kW power generation), low power generation (500-1000kWh per charge), long charging time (3-4 hours), and narrow coverage.

[0004] Therefore, it is clear that neither of the above two solutions can meet the needs of applications requiring high-power charging. Utility Model Content

[0005] To address the aforementioned issues, this application provides a high-power hydrogen-powered mobile charging device, which integrates a hydrogen storage system, a fuel cell system, and a high-power charging system. This high-power hydrogen-powered mobile charging device can serve as an emergency backup power source for public facilities to cope with unforeseen circumstances.

[0006] The mobile charging device includes: a hydrogen storage system configured to store and provide hydrogen; a fuel cell system configured to receive hydrogen from the hydrogen storage system and generate electricity using the hydrogen; a charging system configured to receive, control, and distribute the electricity generated by the fuel cell system; and a terminal device configured to receive electricity from the charging system and charge external electrical devices using the received electricity. At least a portion of the electricity from the fuel cell system is used to drive the movement of the mobile charging device.

[0007] According to one embodiment of the mobile charging device of this application, the charging system is configured to send a start command to the fuel cell system based on the power demand from the terminal device, and to send a shutdown command to the fuel cell system after the external power device has finished charging; the fuel cell system is configured to start and stop based on the start command and the shutdown command from the charging system, respectively.

[0008] Furthermore, the mobile charging device defines a containment space (SP) configured to contain at least a portion of the hydrogen storage system and the fuel cell system. The mobile charging device further includes: a hydrogen concentration sensing device configured to sense the hydrogen concentration within the containment space; and an exhaust device configured to exhaust gas from the containment space to reduce the hydrogen concentration within it.

[0009] Furthermore, the mobile charging device is configured to: issue a warning message, activate the exhaust device, instruct the fuel cell system to stop working, and stop the hydrogen supply to the hydrogen storage system when the hydrogen concentration sensed by the hydrogen concentration sensing device exceeds a predetermined threshold.

[0010] Furthermore, the mobile charging device is also equipped with a battery management system (5), which is configured to provide high-voltage power for the startup of the fuel cell system and to stabilize and balance the charging and discharging power of the high-voltage power grid. The mobile charging device is further configured to: issue a warning message, instruct the fuel cell system to stop working, and stop the hydrogen supply to the hydrogen storage system when a fault related to high-voltage safety is detected.

[0011] According to another embodiment of the mobile charging device of this application, the fuel cell system includes a plurality of FC subsystems, a portion of which is configured to provide power to the charging system, and another portion of which is configured to drive the movement of the mobile charging device.

[0012] Furthermore, another part (24) of the plurality of FC subsystems is configured to also be able to provide power to the charging system.

[0013] Furthermore, the charging system is configured to send a start command to a predetermined number of FC subsystems among the plurality of FC subsystems that can meet the power demand based on the power demand from the terminal device, and / or the plurality of FC subsystems are configured to alternately start different FC subsystems among the plurality of FC subsystems when the mobile charging device is not operating at full load.

[0014] Alternatively, the hydrogen storage system includes a first hydrogen storage system and a second hydrogen storage system configured to supply hydrogen to one portion and the other portion of the plurality of FC subsystems, respectively. At least a portion of the first hydrogen storage system and the second hydrogen storage system is disposed within the containment space defined by the mobile charging device; and / or at least a portion of the plurality of FC subsystems is configured to be located outside the containment space.

[0015] For example, the mobile charging device may be a mobile charging vehicle, and / or the terminal device may be a charging pile, and / or the external power equipment may be at least one of electric ships and electric engineering machinery.

[0016] The high-power hydrogen-powered mobile charging device of this application can achieve a power generation capacity of 600-1000kW, a single power generation capacity of 3000kWh, rapid energy replenishment in 30 minutes, and pollution-free operation, covering application scenarios with a radius of 200km. Thus, it can solve the problems of low charging power, low power generation, slow energy replenishment, and emission pollution of traditional diesel engine and energy storage battery mobile charging devices, and meet the needs of high-power electrical equipment and high-capacity charging in certain application scenarios (such as ports, mines, densely populated urban areas and other remote areas).

[0017] Furthermore, the high-power hydrogen mobile charging device of this application can solve the problems of multi-system integrated control, safety monitoring and management of hydrogen storage system, fuel cell system and charging system, thereby ensuring that these systems can operate safely and stably when providing external charging services. Attached Figure Description

[0018] The accompanying drawings are merely illustrative examples illustrating the technical solutions according to this application. The embodiments shown in the drawings are exemplary only and are not intended to limit the implementation of the subject matter of this application to these embodiments. In the drawings, similar or identical reference numerals are used to refer to similar or identical elements or components. In the drawings,

[0019] Figure 1 This is a schematic diagram of the structural composition of a high-power hydrogen-powered mobile charging device according to this application.

[0020] Figure 2 This is the operating logic diagram of the high-power hydrogen-powered mobile charging device according to this application.

[0021] Figure 3 and Figure 4 They are shown respectively Figure 1 The diagram shows the hydrogen (H2) safety monitoring logic performed by the high-power hydrogen mobile charging device in both idle and running states.

[0022] Figure 5 It shows Figure 1 The high-voltage (HV) safety monitoring logic of the high-power hydrogen mobile charging device is shown. Detailed Implementation

[0023] The high-power hydrogen-powered mobile charging device (hereinafter referred to as "mobile charging device") of this application will be described below with reference to the accompanying drawings. The drawings only show a schematic structure of the mobile charging device of the present invention and are not intended to limit it. It should be noted that, for the sake of simplicity and clarity of the description herein, components or structures not covered by the improvements of this application (e.g., the structural connections, electrical connections and arrangements between the charging system and the terminal device, and between the terminal device and external electrical equipment) will not be described in detail below. The specific details of these components or structures are all known in the art.

[0024] Although the mobile charging device of this application is described in the following description as being in the form of a vehicle, this is merely exemplary and illustrative, and the application is not intended to limit the mobile charging device to the form of a vehicle, but rather it may be in any applicable form, such as a ship, aircraft, etc.

[0025] Figure 1 A schematic diagram illustrating the structural composition of a mobile charging device according to this application is provided. The mobile charging device takes the form of a mobile charging vehicle 800. The mobile charging vehicle 800 includes a hydrogen storage system 1, a fuel cell system 2, a charging system 3, and terminal equipment 4, which together constitute the entire mobile system.

[0026] Hydrogen storage system 1 is configured to store and supply hydrogen to fuel cell system 2.

[0027] The fuel cell (FC) system 2 may include at least one FC subsystem. Figure 1 Four FC subsystems 21, 22, 23, and 24 are shown in the illustration, but this application does not limit the number of them. These FC subsystems are all configured to receive hydrogen from the hydrogen storage system 1 and convert it into electricity. This electricity is then transmitted to the charging system 3.

[0028] The charging system 3 is configured to control and distribute power from the fuel cell system 2 according to the needs of the external electrical device (not shown) to charge the battery of the external electrical device via the terminal device 4.

[0029] Terminal device 4 is configured as a facility for charging external electrical devices using power from charging system 3, and may be in the form of, for example, a charging pile. The external electrical devices connected to it are then charged via power from charging system 3 using terminal device 4. Although Figure 1The image shows a terminal device 4, but the terminal device 4 involved in this application can be integrated as a single unit, or it can be a discrete set of multiple terminal devices, or it can be a group of terminal devices, in which several terminal devices 4 are integrated.

[0030] External electrical equipment can be any large electric equipment that requires a power supply, such as vehicles, ships, construction machinery, etc.

[0031] As an example, such as Figure 1 As shown in the illustrations, FC subsystems 21, 22, 23, and 24 are all configured to provide power to external sources, while FC subsystem 24 is also configured to provide driving force to the mobile charging vehicle 800 itself, enabling its movement. Although illustrated, this application is not limiting, and those skilled in the art can conceive of other arrangements different from the illustrated scenario. For example, one of the FC subsystems could be configured solely as a driving source for the mobile charging vehicle 800, and not as an external power source for providing power to external sources.

[0032] Similarly, as an option, there can be more than one hydrogen storage system 1, such as... Figure 1 As shown, the mobile charging vehicle 800 is equipped with two hydrogen storage systems 11 and 12. The first hydrogen storage system 11 is configured to supply hydrogen to FC subsystems 21, 22, and 23, while the second hydrogen storage system 12 is configured to supply hydrogen to the dual-function FC subsystem 24. Of course, this application is not limited to this arrangement, and those skilled in the art can conceive of various applicable arrangements and connections.

[0033] like Figure 1 As shown, the power generated by each FC subsystem 21, 22, 23, and 24 is transmitted to the charging system 3. Despite this illustration, those skilled in the art will envision other connection arrangements, such as providing separate FC subsystems specifically for powering the mobile charging vehicle 800 to drive its movement, without being connected to the charging system 3.

[0034] Since the connection and arrangement of the charging system 3 and the terminal device 4 are similar to those of conventional charging equipment, further description of them is omitted in this application.

[0035] In the mobile charging vehicle 800 of this application, a battery management system (BMS) 5 is also provided. The BMS 5 is configured to have a power battery for providing high-voltage power for the start-up of the fuel cell system 2, and to stabilize and balance the charging and discharging power of the high-voltage grid in order to better ensure the stable operation of the fuel cell system 2.

[0036] like Figure 1As shown, at least a portion of the hydrogen storage system 1 (first hydrogen storage system 11) and at least a portion of the fuel cell system 2 (FC subsystems 21, 22, and 23) are housed within the compartment of the mobile charging vehicle 800, forming the housing space SP. The second hydrogen storage system 12 is located outside the compartment, for example, under the frame of the mobile charging vehicle 800. The FC subsystem 24 is not located within the compartment but is positioned near the driver's cab to provide power to the mobile charging vehicle 800 where applicable (e.g., if the mobile charging vehicle itself is an electric vehicle).

[0037] Of course, preferably, both the fuel cell system 2 and the hydrogen storage system 1 are located inside the vehicle compartment to better monitor the hydrogen concentration and thus further ensure safety.

[0038] like Figure 1 As shown, at least one hydrogen concentration sensor 6 is installed inside the carriage. Figure 1 Two are shown in the diagram. These hydrogen concentration sensors 6 are preferably disposed on the top wall of the vehicle compartment and are configured to sense the hydrogen concentration inside the compartment to confirm whether there is a hydrogen leak in the hydrogen storage system 1 and the fuel cell system 2. Exhaust devices 7 (e.g., exhaust fans) are provided on the walls (preferably the top wall) of the vehicle compartment. These exhaust devices 7 are configured to be activated to perform an exhaust operation when the hydrogen concentration sensors 6 detect a hydrogen leak inside the compartment (i.e., the sensed hydrogen concentration inside the compartment is higher than a predetermined value for the system's hydrogen concentration), thereby ensuring the safe operation of the entire mobile system.

[0039] The following is combined Figure 2 The operating logic of the control system of the mobile charging device according to this application will be described.

[0040] When an external power device is connected to terminal device 4, the external power device sends a charging request to terminal device 4 (see step S1).

[0041] Terminal device 4 receives the charging request and transmits it to charging system 3 (see step S2).

[0042] The charging system 3 receives the charging request and wakes up the control unit FCCU of the fuel cell system 2, the control unit HCU of the hydrogen storage system 1, and the BMS 5 (see step S3).

[0043] Therefore, the FCCU, HCU, and BMS initiate self-tests and, after completing the self-tests, report the corresponding system status to the charging system 3 (see step 4).

[0044] If the system is in an abnormal state (abnormal signal N is sent), the charging system 3 will not respond to the charging request. Alternatively, the charging system 3 may issue a warning signal to alert the operator (see SN).

[0045] If the system is in normal condition (sending a normal signal Y), the charging system 3 will respond to charging requests from external electrical devices. This response may include the charging system 3 and BMS 5 activating the high-voltage circuit switch and supplying high-voltage power to the fuel cell system 2 (see step S51), while the control unit HCU of the hydrogen storage system 1 opens the hydrogen shut-off valve (not shown in the figure) to supply hydrogen to the fuel cell system 2 (see step S52).

[0046] After the above operations are completed (i.e., all conditions are met), the charging system 3 sends a start command and power demand to the fuel cell system 2 (see step 6).

[0047] Fuel cell system 2 then begins generating electricity. The number of subsystems activated and the power output of fuel cell system 2 depend on the power demand sent by charging system 3. For example, when the power demand is within a first threshold range (e.g., less than 300kW), only FC subsystem 21 is activated (see step S71); when the power demand is within a second threshold range (e.g., between 300-600kW), FC subsystems 21 and 22 are activated (see step S72); when the power demand is within a third threshold range (e.g., between 600-900kW), FC subsystems 21, 22, and 23 are activated (see step S73); and when the power demand is within a fourth threshold range (e.g., greater than 900kW), all FC subsystems 21, 22, 23, and 24 are activated (see step S74). In other words, based on the power demand from charging system 3, only a predetermined number of FC subsystems capable of meeting that power demand need to be activated, rather than always activating all FC subsystems. In addition, different FC subsystems can be alternately started when operating at low load (i.e., without starting all FC subsystems) to optimize the lifespan of the entire mobile system in the mobile charging vehicle 800.

[0048] The number of FC subsystems and the corresponding threshold range can be selected according to actual needs. In this example, FC subsystems 21, 22, 23 and 24 can output a total of 1000kW of power to external electrical equipment when working simultaneously, and the hydrogen stored in hydrogen storage system 1 can generate a total of 3000kWh of power in a single operation.

[0049] With the start-up of the FC subsystem, the fuel cell system 2 supplies power to the charging system 3 (see step S8).

[0050] The charging system 3 receives and controls the power generated by the fuel cell system 2 and transmits it to the terminal device 4 connected to external power devices (see step S9).

[0051] The external power device receives power from the connected terminal device 4 and begins charging (see step S10) until the external power device finishes charging (see step S11).

[0052] Subsequently, the charging system 3 sends a shutdown command to the fuel cell system 2's control unit FCCU (see step S12).

[0053] Upon receiving the shutdown command, the fuel cell system 2 shuts down and sends a status feedback to the charging system 3 (see step S13).

[0054] Upon receiving feedback that the fuel cell system 2 has completed shutdown, the charging system 3 and BMS 5 will shut off the high-voltage circuit switch and stop supplying high-voltage power to the fuel cell system 2 (see step S141). Simultaneously, the hydrogen storage system 1's control unit (HCU) will close the hydrogen shut-off valve, thereby stopping the hydrogen supply (see step S142).

[0055] Finally, the control unit FCCU of fuel cell system 2, the control unit HCU of hydrogen storage system 1, and BMS 5 complete the subsequent operation process and enter sleep mode (see step 15), waiting for the next wake-up signal.

[0056] During the operation of the mobile system described above, it is necessary to perform safety monitoring on hydrogen (H2) and the high-pressure gas (HV) supplied to the entire high-pressure system. The details of the safety monitoring logic for H2 and HV are as follows.

[0057] The following is combined Figure 3 This describes the H2 and HV safety monitoring logic when the mobile system is in an idle (standby) state. First, the hydrogen concentration sensor detects a hydrogen leak inside the vehicle compartment (see step S31). If the hydrogen concentration sensor detects a hydrogen leak, the control unit (HCU) of the hydrogen storage system 1 and the control unit (FCCU) of the fuel cell system 2 send warning messages about the hydrogen leak fault (e.g., screen display information, warning sound, flashing lights, etc.) to alert the operator (see step S321). Simultaneously, the exhaust device 7 is activated to release the leaked hydrogen from the vehicle compartment, reducing the hydrogen concentration inside (see step S322). Subsequently, relevant personnel repair the mobile system to eliminate the hydrogen leak problem (see step S33).

[0058] Figure 4The H2 safety monitoring logic is illustrated when the mobile system is in operation. First, as described above, the hydrogen concentration sensor detects a hydrogen leak inside the vehicle compartment (see step S41). Subsequently, in addition to performing the same steps as S321 and S322 described above (see steps S421 and S422), the fuel cell system 2 shuts down urgently, and the control unit (HCU) of the hydrogen storage system 1 closes the hydrogen shut-off valve within 3 seconds, stopping the supply of hydrogen to the fuel cell system 2 (see step S423). Simultaneously, the charging system 3 and BMS 5 shut off the high-voltage circuit switch, stopping the supply of high-voltage power to the fuel cell system 2 (see step S43). Finally, relevant personnel repair the mobile system to eliminate the hydrogen leak problem (see step S44).

[0059] Figure 5 The HV safety monitoring logic involved in the mobile charging device according to this application is illustrated. First, the charging system 3 and BMS 5 detect whether there is a high-voltage insulation and interlocking fault in the mobile system (see step S51). If the above fault is detected, the charging system 3 and BMS 5 send a warning message about the high-voltage fault (e.g., screen display information, warning sound, flashing light, etc.) to alert the operator (see step S521). At the same time, the fuel cell system 2 shuts down urgently, and the control unit HCU of the hydrogen storage system 1 closes the hydrogen shut-off valve within 3 seconds, stopping the supply of hydrogen to the fuel cell system 2 (see step S522). Then, the charging system 3 and BMS 5 turn off the high-voltage circuit switch, stopping the supply of high-voltage power to the fuel cell system 2 (see step S53). Finally, relevant personnel repair the mobile system to eliminate the high-voltage fault problem (see step S54).

[0060] It should be noted that although ordinal numbers (e.g., first, second, etc.) are used in the description in this article, the expression is only used to distinguish related structures or components and is not intended to order them.

[0061] Furthermore, although several embodiments of this application have been described with reference to the accompanying drawings, as will be understood by those skilled in the art, various modifications can be made to the above embodiments without departing from the scope defined by the appended claims. The above embodiments are provided merely as examples to illustrate the technical solutions of this application and are not intended to limit the scope of protection of this application. A feature or element described in one embodiment may be incorporated into another embodiment unless it contradicts an existing feature or element in another embodiment. Moreover, the specific wording of features and the possible use of reference numerals in the appended claims are not intended to limit the scope of protection claimed.

Claims

1. A high-power hydrogen-powered mobile charging device, characterized in that, The mobile charging device includes: A hydrogen storage system (1), the hydrogen storage system being configured to store and supply hydrogen; A fuel cell system (2) is configured to receive hydrogen from the hydrogen storage system and use the hydrogen to generate electricity; Charging system (3), the charging system being configured to receive, control, and distribute the electricity generated by the fuel cell system; and Terminal device (4), the terminal device being configured to receive power from the charging system and use the received power to charge external electrical equipment. At least a portion of the electricity from the fuel cell system is used to drive the movement of the mobile charging device.

2. The high-power hydrogen energy mobile charging device according to claim 1, characterized in that, The charging system is configured to send a start command to the fuel cell system based on the power demand from the terminal device, and to send a shutdown command to the fuel cell system after the external electrical device has finished charging. The fuel cell system is configured to start and stop based on the start command and the shutdown command from the charging system, respectively.

3. The high-power hydrogen energy mobile charging device according to claim 2, characterized in that, The mobile charging device defines a storage space (SP) configured to accommodate at least a portion of the hydrogen storage system and the fuel cell system. The mobile charging device is further provided with: A hydrogen concentration sensing device (6), the hydrogen concentration sensing device being configured to sense the hydrogen concentration within the accommodating space; and An exhaust device (7) is configured to exhaust the containment space to reduce the hydrogen concentration in the containment space.

4. The high-power hydrogen-powered mobile charging device according to claim 3, characterized in that, The mobile charging device is configured to: When the hydrogen concentration sensed by the hydrogen concentration sensing device exceeds a predetermined threshold, a warning message is issued, the exhaust device (7) is turned on, the fuel cell system (2) is instructed to stop working, and the hydrogen supply of the hydrogen storage system is stopped.

5. The high-power hydrogen-powered mobile charging device according to claim 4, characterized in that, The mobile charging device is also equipped with a battery management system (5), which is configured to provide high-voltage power for the startup of the fuel cell system and to stabilize and balance the charging and discharging power of the high-voltage grid. The mobile charging device is further configured to: Upon detecting a fault related to high-pressure safety, an alert is issued, instructing the fuel cell system to cease operation and stopping the hydrogen supply to the hydrogen storage system.

6. The high-power hydrogen-powered mobile charging device according to claim 1, characterized in that, The fuel cell system includes multiple FC subsystems, a portion (21, 22, 23) of which is configured to provide power to the charging system, and another portion (24) of which is configured to drive the movement of the mobile charging device.

7. The high-power hydrogen-powered mobile charging device according to claim 6, characterized in that, The other part (24) of the plurality of FC subsystems is configured to also be able to provide power to the charging system.

8. The high-power hydrogen-powered mobile charging device according to claim 7, characterized in that, The charging system is configured to send a start command to a predetermined number of FC subsystems among the plurality of FC subsystems that can meet the power demand based on the power demand from the terminal device, and / or The plurality of FC subsystems are configured to alternately activate different FC subsystems when the mobile charging device is not operating at full load.

9. The high-power hydrogen-powered mobile charging device according to claim 8, characterized in that, The hydrogen storage system includes a first hydrogen storage system (11) and a second hydrogen storage system (12), which are configured to supply hydrogen to one part and the other part of the plurality of FC subsystems, respectively.

10. The high-power hydrogen-powered mobile charging device according to claim 9, characterized in that, At least a portion of the first hydrogen storage system and the second hydrogen storage system are configured within the containment space (SP) defined by the mobile charging device; and / or At least a portion of the plurality of FC subsystems are configured to be located outside the accommodating space.

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