WO2020151442A1

WO2020151442A1 - Reformed methanol fuel cell charging method, system, device and storage medium

Info

Publication number: WO2020151442A1
Application number: PCT/CN2019/127564
Authority: WO
Inventors: 仇炯
Original assignee: 爱驰汽车有限公司
Priority date: 2019-01-21
Filing date: 2019-12-23
Publication date: 2020-07-30
Also published as: CN109733237A

Abstract

Disclosed is a reformed methanol fuel cell charging method, a system, a device and a storage medium, wherein the reformed methanol fuel cell charging method comprises obtaining hydrogen from a methanol reformer (51); introducing the hydrogen into a hydrogen fuel cell stack (52) to generate electricity, supplying the electricity to a buffer battery pack (7) and a charger (5); and after receiving a charging request from a battery management module (11), determining an electrical energy source to use for charging according to the charging power of the charging request and the statuses of the hydrogen fuel cell and the buffer battery pack (7), where the electrical energy source is the hydrogen fuel cell and/or the buffer battery pack (7). The reformed methanol fuel cell charging method has a large amount of charging power, and the charger (5) has stable power output, a high utilization rate, a low cost, and can be used in both fixed and mobile applications, thereby having a wide range of application scenarios.

Description

Methanol reforming fuel cell charging method, system, equipment and storage medium

Technical field

The invention relates to the field of charging for new energy vehicles, in particular to a method, system, equipment and storage medium for charging a methanol reforming fuel cell.

Background technique

Existing electric vehicle chargers can be divided into fixed chargers and mobile charging vehicles. Stationary chargers use electrical energy provided by the grid to charge electric vehicles, while mobile rechargeable vehicles use electrical energy stored in batteries to charge electric vehicles. It is difficult to deploy fixed chargers in places where power cannot be increased, places where power distribution capacity is insufficient, places where there is no stable power supply, and places where there is not enough space. Mobile charging vehicles use batteries as energy storage media. Due to the high cost of batteries, the price of unit electric energy is high. In addition, mobile charging vehicles need to be recharged after the battery is exhausted, which takes up the service time of mobile charging vehicles, resulting in mobile charging vehicles The utilization rate is low.

Patent publication number: CN104935037A, patent name: a charging station and method with multiple sets of methanol water reforming hydrogen production power generation modules, and a charging station with multiple sets of methanol water reforming hydrogen production power generation modules are disclosed. Patent publication number: CN105140553A, patent name: a mobile charging station and method with multiple sets of methanol water reforming hydrogen production power generation modules, and a mobile charging station with multiple sets of methanol water reforming hydrogen production power generation modules are disclosed . The charging power of the above two charging stations is limited by the fuel cell power, but due to the high cost of fuel cells, it is impossible to configure a high-power fuel cell, that is, the power of the charging station is limited, and high-power fast cannot be achieved. Charge. In addition, the output power of the fuel cell fluctuates to a certain extent, which causes the output power of the fuel cell charging station to be unstable. In extreme cases, it may not meet the charging power requirements of electric vehicles. Furthermore, once the methanol water reforming module or the fuel cell module fails, the charging station cannot provide charging services, resulting in a decrease in the utilization rate of the charging station.

Therefore, the present invention provides a method, system, equipment and storage medium for charging a methanol reforming fuel cell.

Summary of the invention

In view of the problems in the prior art, the purpose of the present invention is to provide a methanol reforming fuel cell charging method, system, equipment and storage medium, which overcomes the difficulties of the prior art, with high charging power, stable output power of the charger, and utilization of the charger High rate, moderate cost, can be used in both fixed and mobile applications, with a wide range of application scenarios.

The embodiment of the present invention provides a method for charging a methanol reforming fuel cell, including the following steps:

Obtain hydrogen from the methanol reformer;

Put hydrogen into the hydrogen fuel cell stack to generate electricity, and supply power to the buffer battery pack and charger; and

After receiving the charging request from the battery management module, the electric energy source for charging is determined according to the charging power of the charging request, the state of the hydrogen fuel cell and the buffer battery pack, and the electric energy source is the hydrogen fuel cell and/or the buffer battery pack.

Preferably, when the charging power of the charging request is less than the output power of the fuel cell, the hydrogen fuel cell is used as the electric energy source for charging, and the charging power of the charging request is all output by the hydrogen fuel cell.

Preferably, when the charging power of the charging request is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as the source of electric energy for charging, and the charging power of the charging request is all generated by the Mixed output of hydrogen fuel cell and buffer battery pack.

Preferably, when the hydrogen fuel cell fails and the remaining power of the buffer lithium ion battery pack is greater than zero, the charging power requested by the charging is output by the buffer lithium ion battery.

Preferably, the status of the hydrogen fuel cell is monitored in real time whether a failure occurs, and the remaining power of the buffer lithium-ion battery pack is collected.

Preferably, hydrogen is obtained by catalytic reforming and purifying methanol or methanol aqueous solution from a methanol reformer.

The embodiment of the present invention also provides a methanol reforming fuel cell charging system, which is used to realize the above-mentioned methanol reforming fuel cell charging method, and the methanol reforming fuel cell charging system includes:

Methanol reformer for obtaining hydrogen;

Hydrogen fuel cell stack, which feeds hydrogen into the hydrogen fuel cell stack to generate electricity and supply power to the buffer battery pack and charger; and

The charging control module, after receiving the charging request from the battery management module, determines the electric energy source for charging according to the charging power of the charging request, the state of the hydrogen fuel cell and the buffer battery pack, and the electric energy source is the hydrogen fuel cell and/or Buffer battery pack.

Preferably, it includes a box having a first accommodating space and a second accommodating space that are separated from each other, and a methanol or methanol aqueous solution storage tank and the methanol reformer are arranged in the first accommodating space , The hydrogen fuel cell stack, and the booster, and the buffer battery pack, the system controller, the battery management module and the charger are arranged in the second accommodating space.

Preferably, when the charging power of the charging request is less than the output power of the fuel cell, the hydrogen fuel cell is used as the electric energy source for charging, and the charging power of the charging request is all output by the hydrogen fuel cell;

Or, when the charging power of the charging request is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as the electric energy source for charging, and the charging power of the charging request is all from the hydrogen Mixed output of fuel cell and buffer battery pack;

Alternatively, when the hydrogen fuel cell fails and the remaining power of the buffer lithium ion battery pack is greater than zero, the charging power requested by the charging is output by the buffer lithium ion battery.

Preferably, the hydrogen fuel cell stack is composed of three sub-fuel cell stacks with a rated power of 10kW and an output voltage range of 40-80Vdc in parallel.

Preferably, the charger has a rated output power of 60kW, an input voltage of 200-700Vdc, and an output voltage of 200-700Vdcdc.

Preferably, it further includes a step-up transformer, the hydrogen fuel cell stack is connected to the charger through the step-up transformer, and the step-up transformer consists of three units with a rated power of 10kW, an input voltage range of 40-150Vdc, and an output voltage Step-up transformers with a range of 260-430Vdc are connected in parallel on the AC side.

The embodiment of the present invention also provides a methanol reforming fuel cell charging device, including:

processor;

A memory in which executable instructions of the processor are stored;

Wherein, the processor is configured to execute the steps of the above-mentioned methanol reforming fuel cell charging method by executing the executable instructions.

The embodiment of the present invention also provides a computer-readable storage medium for storing a program that, when executed, realizes the steps of the above-mentioned methanol reforming fuel cell charging method.

The methanol reforming fuel cell charging method, system, equipment and storage medium of the present invention can achieve high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, and can be used in both fixed and mobile applications. Wide application scenarios.

Description of the drawings

By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present invention will become more apparent.

Fig. 1 is a first flow chart of a method for charging a methanol reforming fuel cell of the present invention;

Fig. 2 is a second flow chart of the method for charging a methanol reforming fuel cell of the present invention;

Fig. 3 is a schematic diagram of module connection of the methanol reforming fuel cell charging system of the present invention;

Figure 4 is a schematic structural diagram of the methanol reforming fuel cell charging system of the present invention;

Figure 5 is a schematic diagram of the operating principle of the methanol reforming fuel cell charging system of the present invention;

6 is a schematic diagram of the structure of the methanol reforming fuel cell charging equipment of the present invention; and

Fig. 7 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms, and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention will be comprehensive and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the figures indicate the same or similar structures, and thus their repeated description will be omitted.

Fig. 1 is the first flow chart of the charging method of the methanol reforming fuel cell of the present invention. As shown in Figure 1, the first charging method of the methanol reforming fuel cell of the present invention includes the following steps:

S101. Obtain hydrogen from a methanol reformer. In this embodiment, methanol or an aqueous methanol solution is catalytically reformed and purified from the methanol reformer to obtain hydrogen.

S102. Put hydrogen into the hydrogen fuel cell stack to generate electricity, and supply power to the buffer battery pack and the charger.

S103: After receiving the charging request from the battery management module, determine the source of electric energy for charging according to the charging power of the charging request, the state of the hydrogen fuel cell and the buffer battery pack, and the electric energy source is the hydrogen fuel cell and/or the buffer battery pack. The battery management module (BATTERY MANAGEMENT SYSTEM) in this embodiment is the link between the battery and the user. The main object is the secondary battery. It is mainly used to improve the utilization of the battery and prevent the battery from being overcharged and over-discharged. Electric cars, battery cars, robots, drones, etc. Due to the complexity of the charging power requested by the charging, the state of the hydrogen fuel cell and the buffer battery pack to determine the source of electric energy for charging, in order to enable the three to achieve a better matching effect, the present invention provides a more specific charging strategy.

Fig. 2 is a second flow chart of the charging method of the methanol reforming fuel cell of the present invention. As shown in Figure 2, the second charging method of the methanol reforming fuel cell of the present invention includes the following steps:

S201. Obtain hydrogen from a methanol reformer. In this embodiment, methanol or an aqueous methanol solution is catalytically reformed and purified from the methanol reformer to obtain hydrogen.

S202. Put hydrogen into the hydrogen fuel cell stack to generate electricity, and supply power to the buffer battery pack and the charger. Real-time monitoring of the status of the hydrogen fuel cell for failures, and collecting the remaining power of the buffered lithium-ion battery pack.

S203: When the charging power requested by the charging is less than the output power of the fuel cell, the hydrogen fuel cell is used as the electric energy source for charging, and the charging power requested by the charging is all output by the hydrogen fuel cell.

S204. When the charging power requested by the charging is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as the electric energy source for charging, and the charging power requested by the charging is all mixed and output by the hydrogen fuel cell and the buffer battery pack.

S205: When the hydrogen fuel cell fails and the remaining power of the buffer lithium ion battery pack is greater than zero, the charging power requested by the charging is output by the buffer lithium ion battery.

The purpose of the present invention is to overcome the existing fixed chargers being limited in power supply, power distribution, and space, which lead to the inability to deploy fixed chargers. Mobile charging vehicles are limited by the excessive cost of the battery and their own need to charge which leads to the excessive cost of unit power. And the problem of low utilization rate of charging vehicles, provide a kind of methanol reforming hydrogen, hydrogen fuel cell power generation, hydrogen fuel cell to charge the buffer lithium ion battery, hydrogen fuel cell and buffer lithium ion battery to charge electric vehicles through the power conversion of the charger This technology has the advantages of high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, and can be used in fixed or mobile applications.

The purpose of the present invention is to provide a methanol reforming fuel cell charging method that can achieve high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, fixed application and mobile application, and wide application scenarios.

Fig. 3 is a schematic diagram of module connection of the methanol reforming fuel cell charging system of the present invention. As shown in FIG. 3, the methanol reforming fuel cell charging system 5 of the present invention is used to realize the above-mentioned methanol reforming fuel cell charging method, and includes: a methanol reformer 51, a hydrogen fuel cell stack 52, and a charging control module 53. The methanol reformer 51 is used to obtain hydrogen. The hydrogen enters the hydrogen fuel cell stack to generate electricity, and supplies power to the buffer battery pack and charger. After receiving the charging request from the battery management module, the charging control module 53 determines the power source for charging according to the requested charging power, the state of the hydrogen fuel cell and the buffer battery pack. The power source is the hydrogen fuel cell and/or the buffer battery pack. In this embodiment, when the charging power requested by the charging is less than the output power of the fuel cell, the hydrogen fuel cell is used as the electric energy source for charging, and the charging power requested by the charging is all output by the hydrogen fuel cell. Or, when the charging power requested by the charging is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as the electric energy source for charging, and the charging power requested by the charging is all mixed and output by the hydrogen fuel cell and the buffer battery pack. Or, when the hydrogen fuel cell fails and the remaining power of the buffer lithium-ion battery pack is greater than zero, the charging power requested for charging is output by the buffer lithium-ion battery, but it is not limited to this.

In a preferred scheme, the control process of the methanol reforming fuel cell charger system includes: cold start process, heat preservation process, electric vehicle charging process, shutdown process and fault handling process. The mutual conversion relationship between the processes is shown in Figure 2. After successful cold start, the system enters the heat preservation process. At this time, the electric vehicle can be charged or shut down. After the electric vehicle is charged, it enters the heat preservation process. The cold start process, heat preservation process, electric vehicle charging process, and shutdown process are all encountered Enter the fault handling process. After the fault handling is completed, you can re-enter the heat preservation process. If the fault cannot be resolved, enter the shutdown process.

In this embodiment, the hydrogen fuel cell stack is composed of three sub-fuel cell stacks with a rated power of 10kW and an output voltage range of 40-80Vdc in parallel, but it is not limited to this.

In this embodiment, the charger has a rated output power of 60 kW, an input voltage of 200 to 700 Vdc, and an output voltage of 200 to 700 Vdc, but it is not limited to this.

In this embodiment, it also includes a step-up transformer. The hydrogen fuel cell stack is connected to the charger through the step-up transformer. The step-up transformer consists of three step-up transformers with a rated power of 10kW, an input voltage range of 40-150Vdc, and an output voltage range of 260-430Vdc. The voltage transformer is composed in parallel on the AC side, but not limited to this.

FIG. 4 is a schematic diagram of the structure of the charging system of the methanol reforming fuel cell of the present invention. Figure 5 is a schematic diagram of the operating principle of the methanol reforming fuel cell charging system of the present invention. The straight double-headed arrow in Figure 5 is the power transmission line, and the dashed double-headed arrow is the signal transmission line. As shown in Figures 4 and 5, the use of the methanol reforming fuel cell charging system of the present invention is as follows: the methanol reforming fuel cell charging system consists of a methanol reformer 1, a hydrogen fuel cell stack 2, a subsystem controller 3. Boost transformer 4, charger 5, auxiliary power transformer 6, buffer battery pack 7, buffer battery pack battery management module 8, system controller 9, electric vehicle battery pack 10, electric vehicle battery management module 11, and cloud monitoring platform 12 . The methanol reforming fuel cell charging system interacts with the electric vehicle battery management module 11 through the charger 5, and the system can also interact with the cloud monitoring platform 12 through the system controller 9. The working principle of the methanol reforming fuel cell charger 5 is: the methanol reformer 1 catalytically reforms and purifies methanol or methanol aqueous solution to obtain hydrogen. The hydrogen enters the hydrogen fuel cell stack 2 to generate power to the buffer battery pack 7 and the charger 5 , The electric vehicle battery management module 11 requests the charger 5 to charge the electric vehicle battery pack 10. After receiving the charging request from the electric vehicle battery management module 11, the system controller 9 comprehensively judges the various subsystems in the methanol reforming fuel cell charger 5 The output power of the hydrogen fuel cell and the buffer lithium-ion battery is dynamically adjusted, the output power fluctuation of the fuel cell is smoothed, and the electric vehicle battery pack 10 is charged. When the charging power requested by the electric vehicle battery management module 11 is small and the output power of the fuel cell can meet the requirements, all the power is output by the fuel cell; when the charging power requested by the electric vehicle battery management module 11 is greater than the maximum output power of the fuel cell When the fuel cell and the buffer lithium-ion battery are mixed output, and the maximum output power is less than or equal to the sum of the maximum output power of the fuel cell and the buffer lithium-ion battery; when the fuel cell fails and the buffer lithium-ion battery pack has electricity, the electric The charging power requested by the car battery management module 11 is output by the buffered lithium ion battery.

The schematic diagram of the system structure of the methanol reforming fuel cell charger 5 is shown in Figure 4: The outside of the system is a box, which has explosion-proof, dust-proof, and rain-proof functions. The box can be fixed on a foundation with sufficient strength as a fixed It can be used as a mobile charger 5, or it can be placed on a transport vehicle as a mobile charger 5; the methanol or methanol aqueous solution storage tank, the methanol reformer 1, the hydrogen fuel cell stack 2, the step-up transformer 4 are placed in the box one Side, and separated from the other side, can reduce the impact of the large amount of heat generated during methanol reforming and hydrogen fuel cell operation on other modules; the cache battery pack and battery management module, charger 5, and system controller 9 are placed in the box The other side of the body. The various modules are electrically connected based on the system architecture to ensure that the power and communication of the entire charger 5 meet the system requirements.

In this embodiment, the methanol reforming fuel cell charger 5 has the following advantages: high charging power, stable output power of the charger 5, high utilization rate of the charger 5, moderate cost, and can be used in stationary or mobile applications.

The methanol reforming fuel cell charger 5 system consists of: the methanol reformer 1 has a maximum hydrogen production of 25m3/h; the hydrogen fuel cell stack 2 consists of three sub-hydrogen fuel cell stacks with a rated power of 10kW and an output voltage range of 40-80Vdc 2 is composed in parallel; the step-up transformer 4 is composed of three step-up transformers 4 with a rated power of 10kW, an input voltage range of 40-150Vdc and an output voltage range of 260-430Vdc in parallel on the AC side; the buffer battery pack 7 is composed of 112 strings of lithium iron phosphate batteries Composition, battery pack rated capacity 105Ah, rated energy 37.5kWh, charge-discharge rate 1C, cycle life greater than 2000 times, working voltage range 280～410Vdc; charger 5 rated output power 60kW, input voltage 200～700Vdc, output voltage 200～700Vdcdc .

Methanol reforming fuel cell charger 5 startup process: a cold start command is issued, and the auxiliary power transformer 6 converts the high-voltage power of the buffer battery pack 7 into low-voltage power that can be used by each module, and each module is powered on, and the methanol reformer 1 The electric energy of the buffer battery pack 7 is used to heat to a working temperature of 200°C. If there is no fault in the above process, the heat preservation process is entered, and if there is a fault, the fault processing process is entered. Methanol reforming fuel cell heat preservation process: except for cold start, electric vehicle charging, shutdown, and malfunction, it is the heat preservation process.

Electric vehicle charging: If the electric vehicle battery management module 11 requests a charging power of 20kW, and the maximum output power of the methanol fuel cell is 30kW at this time, all power is output by the methanol fuel cell; if the electric vehicle battery management module 11 requests a charging power of 50kW, If the maximum output power of the methanol fuel cell is greater than 30kW, the charging power is mixed output by the methanol fuel cell and the buffer lithium ion battery. The system controller 9 dynamically adjusts the respective power output based on the status of the methanol fuel cell and the buffer battery pack 7 to ensure the output power If the methanol fuel cell fails and the buffer lithium-ion battery pack is charged, the charging power is provided by the buffer lithium-ion battery pack, and the charging power does not exceed the maximum output power of the buffer lithium-ion battery pack.

The methanol reforming fuel cell charging system of the present invention can achieve high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, fixed application and mobile application, and wide application scenarios.

The embodiment of the present invention also provides a methanol reforming fuel cell charging device, including a processor. The memory stores executable instructions of the processor. Wherein, the processor is configured to execute the steps of the methanol reforming fuel cell charging method executed by executing executable instructions.

As shown above, this embodiment can achieve high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, and can be used in both fixed and mobile applications, and has a wide range of application scenarios.

Those skilled in the art can understand that various aspects of the present invention can be implemented as a system, a method, or a program product. Therefore, each aspect of the present invention can be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, which can be collectively referred to herein as "Circuit", "Module" or "Platform".

Fig. 6 is a schematic diagram of the structure of the methanol reforming fuel cell charging equipment of the present invention. The electronic device 600 according to this embodiment of the present invention will be described below with reference to FIG. 6. The electronic device 600 shown in FIG. 6 is only an example, and should not bring any limitation to the function and application scope of the embodiment of the present invention.

As shown in FIG. 6, the electronic device 600 is represented in the form of a general-purpose computing device. The components of the electronic device 600 may include but are not limited to: at least one processing unit 610, at least one storage unit 620, a bus 630 connecting different platform components (including the storage unit 620 and the processing unit 610), a display unit 640, and the like.

The storage unit stores program codes, and the program codes can be executed by the processing unit 610 so that the processing unit 610 executes the steps according to various exemplary embodiments of the present invention described in the above electronic prescription circulation processing method section of this specification. For example, the processing unit 610 may perform the steps shown in FIG. 1.

The storage unit 620 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 6201 and/or a cache storage unit 6202, and may further include a read-only storage unit (ROM) 6203.

The storage unit 620 may also include a program/utility tool 6204 having a set (at least one) program module 6205. Such program module 6205 includes but is not limited to: an operating system, one or more application programs, other program modules, and program data, Each of these examples or some combination may include the implementation of a network environment.

The bus 630 may represent one or more of several types of bus structures, including a storage unit bus or a storage unit controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local area using any bus structure among multiple bus structures. bus.

The electronic device 600 may also communicate with one or more external devices 700 (such as keyboards, pointing devices, Bluetooth devices, etc.), and may also communicate with one or more devices that enable a user to interact with the electronic device 600, and/or communicate with Any device (such as a router, modem, etc.) that enables the electronic device 600 to communicate with one or more other computing devices. This communication can be performed through an input/output (I/O) interface 650. In addition, the electronic device 600 may also communicate with one or more networks (for example, a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through the network adapter 660. The network adapter 660 can communicate with other modules of the electronic device 600 through the bus 630. It should be understood that although not shown in the figure, other hardware and/or software modules can be used in conjunction with the electronic device 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives And data backup storage platform, etc.

The embodiment of the present invention also provides a computer-readable storage medium for storing a program, which implements the steps of the methanol reforming fuel cell charging method when the program is executed. In some possible implementation manners, various aspects of the present invention can also be implemented in the form of a program product, which includes program code. When the program product runs on a terminal device, the program code is used to make the terminal device execute the above-mentioned The steps according to various exemplary embodiments of the present invention are described in the electronic prescription circulation processing method section.

Fig. 7 is a schematic structural diagram of a computer-readable storage medium of the present invention. Referring to FIG. 7, a program product 800 for implementing the above method according to an embodiment of the present invention is described. It can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be installed in a terminal device, For example, running on a personal computer. However, the program product of the present invention is not limited to this. In this document, the readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or combined with an instruction execution system, device, or device.

The program product can adopt any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or a combination of any of the above. More specific examples (non-exhaustive list) of readable storage media include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Type programmable read only memory (EPROM or flash memory), optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.

The computer-readable storage medium may include a data signal propagated in baseband or as a part of a carrier wave, and readable program code is carried therein. This propagated data signal can take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The readable storage medium may also be any readable medium other than the readable storage medium, and the readable medium may send, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device. The program code contained on the readable storage medium can be transmitted by any suitable medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

The program code for performing the operations of the present invention can be written in any combination of one or more programming languages. The programming languages include object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming. Language-such as "C" language or similar programming language. The program code can be executed entirely on the user's computing device, partly on the user's device, executed as an independent software package, partly on the user's computing device and partly executed on the remote computing device, or entirely on the remote computing device or server Executed on. In the case of a remote computing device, the remote computing device can be connected to a user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, using Internet service providers) Business to connect via the Internet).

In summary, the purpose of the present invention is to provide a methanol reforming fuel cell charging method, system, equipment and storage medium, which can achieve high charging power, stable output power of the charger, high utilization rate of the charger, moderate cost, and fixed application It can also be used in mobile applications with a wide range of application scenarios.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

A method for charging a methanol reforming fuel cell is characterized by comprising the following steps:

Obtain hydrogen from the methanol reformer;

Put hydrogen into the hydrogen fuel cell stack to generate electricity, and supply power to the buffer battery pack and charger; and

After receiving the charging request from the battery management module, the electric energy source for charging is determined according to the charging power of the charging request, the state of the hydrogen fuel cell and the buffer battery pack, and the electric energy source is the hydrogen fuel cell and/or the buffer battery pack.
The method for charging a methanol reforming fuel cell according to claim 1, wherein when the charging power requested by the charging is less than the output power of the fuel cell, the hydrogen fuel cell is used as a source of electric energy for charging. The charging power of the charging request is all output by the hydrogen fuel cell.
The method for charging a methanol reforming fuel cell according to claim 1, wherein when the charging power requested by the charging is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as The electric energy source for charging, and the charging power requested by the charging is all mixed and output by the hydrogen fuel cell and the buffer battery pack.
The method for charging a methanol reforming fuel cell according to claim 1, wherein when the hydrogen fuel cell fails and the remaining power of the buffered lithium-ion battery pack is greater than zero, the charging power requested by the charging is determined by the Buffer lithium ion battery output.
8. The method for charging a methanol reforming fuel cell according to claim 4, wherein the status of the hydrogen fuel cell is monitored in real time whether a fault occurs, and the remaining power of the buffer lithium-ion battery pack is collected.
The method for charging a methanol reforming fuel cell according to claim 1, wherein the methanol or methanol aqueous solution is catalytically reformed and purified to obtain hydrogen from the methanol reformer.
A methanol reforming fuel cell charging system for realizing the methanol reforming fuel cell charging method of any one of claims 1 to 6, characterized in that it comprises:

Methanol reformer for obtaining hydrogen;

Hydrogen fuel cell stack, which feeds hydrogen into the hydrogen fuel cell stack to generate electricity and supply power to the buffer battery pack and charger; and

The charging control module, after receiving the charging request from the battery management module, determines the electric energy source for charging according to the charging power of the charging request, the state of the hydrogen fuel cell and the buffer battery pack, and the electric energy source is the hydrogen fuel cell and/or Buffer battery pack.
7. The methanol reforming fuel cell charging system according to claim 7, characterized in that it comprises a box having a first accommodating space and a second accommodating space that are isolated from each other, and the first accommodating A methanol or methanol aqueous solution storage tank, the methanol reformer, the hydrogen fuel cell stack, and a booster are arranged in the space, and the buffer battery pack, the system controller, and the battery are arranged in the second accommodation space. Management module and charger.
The methanol reforming fuel cell charging system according to claim 7, characterized in that:

When the charging power of the charging request is less than the output power of the fuel cell, using the hydrogen fuel cell as the electric energy source for charging, and the charging power of the charging request is all output by the hydrogen fuel cell;

Or, when the charging power of the charging request is greater than the output power of the fuel cell, the combination of the hydrogen fuel cell and the buffer battery pack is used as the electric energy source for charging, and the charging power of the charging request is all from the hydrogen Mixed output of fuel cell and buffer battery pack;

Alternatively, when the hydrogen fuel cell fails and the remaining power of the buffer lithium ion battery pack is greater than zero, the charging power requested by the charging is output by the buffer lithium ion battery.
8. The methanol reforming fuel cell charging system according to claim 7, wherein the hydrogen fuel cell stack is composed of three sub-fuel cell stacks with a rated power of 10kW and an output voltage range of 40-80Vdc in parallel.
7. The methanol reforming fuel cell charging system according to claim 7, wherein the charger has a rated output power of 60kW, an input voltage of 200-700Vdc, and an output voltage of 200-700Vdcdc.
8. The methanol reforming fuel cell charging system of claim 7, further comprising a step-up transformer, the hydrogen fuel cell stack is connected to the charger through the step-up transformer, and the step-up transformer It consists of three step-up transformers with a rated power of 10kW, an input voltage range of 40-150Vdc, and an output voltage range of 260-430Vdc connected in parallel on the AC side.
A methanol reforming fuel cell charging equipment, characterized in that it comprises:

processor;

A memory in which executable instructions of the processor are stored;

Wherein, the processor is configured to execute the steps of the methanol reforming fuel cell charging method according to any one of claims 1 to 6 by executing the executable instructions.
A computer-readable storage medium for storing a program, characterized in that, when the program is executed, the steps of the method for charging a methanol reforming fuel cell according to any one of claims 1 to 6 are realized.